+++ /dev/null
-/* GTK - The GIMP Toolkit
- * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/*
- * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
- * file for a list of people on the GTK+ Team. See the ChangeLog
- * files for a list of changes. These files are distributed with
- * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
- */
-
-#include "config.h"
-
-#include <ctype.h>
-#include <string.h>
-
-#undef GDK_DISABLE_DEPRECATED
-
-#include "gdk/gdkkeysyms.h"
-#include "gdk/gdki18n.h"
-
-#undef GTK_DISABLE_DEPRECATED
-
-#include "gtkmain.h"
-#include "gtkmarshalers.h"
-#include "gtkselection.h"
-#include "gtksignal.h"
-#include "gtkstyle.h"
-#define GTK_ENABLE_BROKEN
-#include "gtktext.h"
-#include "line-wrap.xbm"
-#include "line-arrow.xbm"
-#include "gtkprivate.h"
-#include "gtkintl.h"
-
-#include "gtkalias.h"
-
-
-#define INITIAL_BUFFER_SIZE 1024
-#define INITIAL_LINE_CACHE_SIZE 256
-#define MIN_GAP_SIZE 256
-#define LINE_DELIM '\n'
-#define MIN_TEXT_WIDTH_LINES 20
-#define MIN_TEXT_HEIGHT_LINES 10
-#define TEXT_BORDER_ROOM 1
-#define LINE_WRAP_ROOM 8 /* The bitmaps are 6 wide. */
-#define DEFAULT_TAB_STOP_WIDTH 4
-#define SCROLL_PIXELS 5
-#define KEY_SCROLL_PIXELS 10
-#define SCROLL_TIME 100
-#define FREEZE_LENGTH 1024
-/* Freeze text when inserting or deleting more than this many characters */
-
-#define SET_PROPERTY_MARK(m, p, o) do { \
- (m)->property = (p); \
- (m)->offset = (o); \
- } while (0)
-#define MARK_CURRENT_PROPERTY(mark) ((TextProperty*)(mark)->property->data)
-#define MARK_NEXT_PROPERTY(mark) ((TextProperty*)(mark)->property->next->data)
-#define MARK_PREV_PROPERTY(mark) ((TextProperty*)((mark)->property->prev ? \
- (mark)->property->prev->data \
- : NULL))
-#define MARK_PREV_LIST_PTR(mark) ((mark)->property->prev)
-#define MARK_LIST_PTR(mark) ((mark)->property)
-#define MARK_NEXT_LIST_PTR(mark) ((mark)->property->next)
-#define MARK_OFFSET(mark) ((mark)->offset)
-#define MARK_PROPERTY_LENGTH(mark) (MARK_CURRENT_PROPERTY(mark)->length)
-
-
-#define MARK_CURRENT_FONT(text, mark) \
- ((MARK_CURRENT_PROPERTY(mark)->flags & PROPERTY_FONT) ? \
- MARK_CURRENT_PROPERTY(mark)->font->gdk_font : \
- gtk_style_get_font (GTK_WIDGET (text)->style))
-#define MARK_CURRENT_FORE(text, mark) \
- ((MARK_CURRENT_PROPERTY(mark)->flags & PROPERTY_FOREGROUND) ? \
- &MARK_CURRENT_PROPERTY(mark)->fore_color : \
- &((GtkWidget *)text)->style->text[((GtkWidget *)text)->state])
-#define MARK_CURRENT_BACK(text, mark) \
- ((MARK_CURRENT_PROPERTY(mark)->flags & PROPERTY_BACKGROUND) ? \
- &MARK_CURRENT_PROPERTY(mark)->back_color : \
- &((GtkWidget *)text)->style->base[((GtkWidget *)text)->state])
-#define MARK_CURRENT_TEXT_FONT(text, mark) \
- ((MARK_CURRENT_PROPERTY(mark)->flags & PROPERTY_FONT) ? \
- MARK_CURRENT_PROPERTY(mark)->font : \
- text->current_font)
-
-#define TEXT_LENGTH(t) ((t)->text_end - (t)->gap_size)
-#define FONT_HEIGHT(f) ((f)->ascent + (f)->descent)
-#define LINE_HEIGHT(l) ((l).font_ascent + (l).font_descent)
-#define LINE_CONTAINS(l, i) ((l).start.index <= (i) && (l).end.index >= (i))
-#define LINE_STARTS_AT(l, i) ((l).start.index == (i))
-#define LINE_START_PIXEL(l) ((l).tab_cont.pixel_offset)
-#define LAST_INDEX(t, m) ((m).index == TEXT_LENGTH(t))
-#define CACHE_DATA(c) (*(LineParams*)(c)->data)
-
-enum {
- PROP_0,
- PROP_HADJUSTMENT,
- PROP_VADJUSTMENT,
- PROP_LINE_WRAP,
- PROP_WORD_WRAP
-};
-
-typedef struct _TextProperty TextProperty;
-typedef struct _TabStopMark TabStopMark;
-typedef struct _PrevTabCont PrevTabCont;
-typedef struct _FetchLinesData FetchLinesData;
-typedef struct _LineParams LineParams;
-typedef struct _SetVerticalScrollData SetVerticalScrollData;
-
-typedef gint (*LineIteratorFunction) (GtkText* text, LineParams* lp, void* data);
-
-typedef enum
-{
- FetchLinesPixels,
- FetchLinesCount
-} FLType;
-
-struct _SetVerticalScrollData {
- gint pixel_height;
- gint last_didnt_wrap;
- gint last_line_start;
- GtkPropertyMark mark;
-};
-
-struct _GtkTextFont
-{
- /* The actual font. */
- GdkFont *gdk_font;
- guint ref_count;
-
- gint16 char_widths[256];
-};
-
-typedef enum {
- PROPERTY_FONT = 1 << 0,
- PROPERTY_FOREGROUND = 1 << 1,
- PROPERTY_BACKGROUND = 1 << 2
-} TextPropertyFlags;
-
-struct _TextProperty
-{
- /* Font. */
- GtkTextFont* font;
-
- /* Background Color. */
- GdkColor back_color;
-
- /* Foreground Color. */
- GdkColor fore_color;
-
- /* Show which properties are set */
- TextPropertyFlags flags;
-
- /* Length of this property. */
- guint length;
-};
-
-struct _TabStopMark
-{
- GList* tab_stops; /* Index into list containing the next tab position. If
- * NULL, using default widths. */
- gint to_next_tab;
-};
-
-struct _PrevTabCont
-{
- guint pixel_offset;
- TabStopMark tab_start;
-};
-
-struct _FetchLinesData
-{
- GList* new_lines;
- FLType fl_type;
- gint data;
- gint data_max;
-};
-
-struct _LineParams
-{
- guint font_ascent;
- guint font_descent;
- guint pixel_width;
- guint displayable_chars;
- guint wraps : 1;
-
- PrevTabCont tab_cont;
- PrevTabCont tab_cont_next;
-
- GtkPropertyMark start;
- GtkPropertyMark end;
-};
-
-
-static void gtk_text_class_init (GtkTextClass *klass);
-static void gtk_text_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec);
-static void gtk_text_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec);
-static void gtk_text_editable_init (GtkEditableClass *iface);
-static void gtk_text_init (GtkText *text);
-static void gtk_text_destroy (GtkObject *object);
-static void gtk_text_finalize (GObject *object);
-static void gtk_text_realize (GtkWidget *widget);
-static void gtk_text_unrealize (GtkWidget *widget);
-static void gtk_text_style_set (GtkWidget *widget,
- GtkStyle *previous_style);
-static void gtk_text_state_changed (GtkWidget *widget,
- GtkStateType previous_state);
-static void gtk_text_draw_focus (GtkWidget *widget);
-static void gtk_text_size_request (GtkWidget *widget,
- GtkRequisition *requisition);
-static void gtk_text_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
-static void gtk_text_adjustment (GtkAdjustment *adjustment,
- GtkText *text);
-static void gtk_text_insert_text (GtkEditable *editable,
- const gchar *new_text,
- gint new_text_length,
- gint *position);
-static void gtk_text_delete_text (GtkEditable *editable,
- gint start_pos,
- gint end_pos);
-static void gtk_text_update_text (GtkOldEditable *old_editable,
- gint start_pos,
- gint end_pos);
-static gchar *gtk_text_get_chars (GtkOldEditable *old_editable,
- gint start,
- gint end);
-static void gtk_text_set_selection (GtkOldEditable *old_editable,
- gint start,
- gint end);
-static void gtk_text_real_set_editable (GtkOldEditable *old_editable,
- gboolean is_editable);
-
-static void gtk_text_adjustment_destroyed (GtkAdjustment *adjustment,
- GtkText *text);
-
-/* Event handlers */
-static gint gtk_text_expose (GtkWidget *widget,
- GdkEventExpose *event);
-static gint gtk_text_button_press (GtkWidget *widget,
- GdkEventButton *event);
-static gint gtk_text_button_release (GtkWidget *widget,
- GdkEventButton *event);
-static gint gtk_text_motion_notify (GtkWidget *widget,
- GdkEventMotion *event);
-static gint gtk_text_key_press (GtkWidget *widget,
- GdkEventKey *event);
-
-static void move_gap (GtkText* text, guint index);
-static void make_forward_space (GtkText* text, guint len);
-
-/* Property management */
-static GtkTextFont* get_text_font (GdkFont* gfont);
-static void text_font_unref (GtkTextFont *text_font);
-
-static void insert_text_property (GtkText* text, GdkFont* font,
- const GdkColor *fore, const GdkColor* back, guint len);
-static TextProperty* new_text_property (GtkText *text, GdkFont* font,
- const GdkColor* fore, const GdkColor* back, guint length);
-static void destroy_text_property (TextProperty *prop);
-static void init_properties (GtkText *text);
-static void realize_property (GtkText *text, TextProperty *prop);
-static void realize_properties (GtkText *text);
-static void unrealize_property (GtkText *text, TextProperty *prop);
-static void unrealize_properties (GtkText *text);
-
-static void delete_text_property (GtkText* text, guint len);
-
-static guint pixel_height_of (GtkText* text, GList* cache_line);
-
-/* Property Movement and Size Computations */
-static void advance_mark (GtkPropertyMark* mark);
-static void decrement_mark (GtkPropertyMark* mark);
-static void advance_mark_n (GtkPropertyMark* mark, gint n);
-static void decrement_mark_n (GtkPropertyMark* mark, gint n);
-static void move_mark_n (GtkPropertyMark* mark, gint n);
-static GtkPropertyMark find_mark (GtkText* text, guint mark_position);
-static GtkPropertyMark find_mark_near (GtkText* text, guint mark_position, const GtkPropertyMark* near);
-static void find_line_containing_point (GtkText* text, guint point,
- gboolean scroll);
-
-/* Display */
-static void compute_lines_pixels (GtkText* text, guint char_count,
- guint *lines, guint *pixels);
-
-static gint total_line_height (GtkText* text,
- GList* line,
- gint line_count);
-static LineParams find_line_params (GtkText* text,
- const GtkPropertyMark *mark,
- const PrevTabCont *tab_cont,
- PrevTabCont *next_cont);
-static void recompute_geometry (GtkText* text);
-static void insert_expose (GtkText* text, guint old_pixels, gint nchars, guint new_line_count);
-static void delete_expose (GtkText* text,
- guint nchars,
- guint old_lines,
- guint old_pixels);
-static GdkGC *create_bg_gc (GtkText *text);
-static void clear_area (GtkText *text, GdkRectangle *area);
-static void draw_line (GtkText* text,
- gint pixel_height,
- LineParams* lp);
-static void draw_line_wrap (GtkText* text,
- guint height);
-static void draw_cursor (GtkText* text, gint absolute);
-static void undraw_cursor (GtkText* text, gint absolute);
-static gint drawn_cursor_min (GtkText* text);
-static gint drawn_cursor_max (GtkText* text);
-static void expose_text (GtkText* text, GdkRectangle *area, gboolean cursor);
-
-/* Search and Placement. */
-static void find_cursor (GtkText* text,
- gboolean scroll);
-static void find_cursor_at_line (GtkText* text,
- const LineParams* start_line,
- gint pixel_height);
-static void find_mouse_cursor (GtkText* text, gint x, gint y);
-
-/* Scrolling. */
-static void adjust_adj (GtkText* text, GtkAdjustment* adj);
-static void scroll_up (GtkText* text, gint diff);
-static void scroll_down (GtkText* text, gint diff);
-static void scroll_int (GtkText* text, gint diff);
-
-static void process_exposes (GtkText *text);
-
-/* Cache Management. */
-static void free_cache (GtkText* text);
-static GList* remove_cache_line (GtkText* text, GList* list);
-
-/* Key Motion. */
-static void move_cursor_buffer_ver (GtkText *text, int dir);
-static void move_cursor_page_ver (GtkText *text, int dir);
-static void move_cursor_ver (GtkText *text, int count);
-static void move_cursor_hor (GtkText *text, int count);
-
-/* Binding actions */
-static void gtk_text_move_cursor (GtkOldEditable *old_editable,
- gint x,
- gint y);
-static void gtk_text_move_word (GtkOldEditable *old_editable,
- gint n);
-static void gtk_text_move_page (GtkOldEditable *old_editable,
- gint x,
- gint y);
-static void gtk_text_move_to_row (GtkOldEditable *old_editable,
- gint row);
-static void gtk_text_move_to_column (GtkOldEditable *old_editable,
- gint row);
-static void gtk_text_kill_char (GtkOldEditable *old_editable,
- gint direction);
-static void gtk_text_kill_word (GtkOldEditable *old_editable,
- gint direction);
-static void gtk_text_kill_line (GtkOldEditable *old_editable,
- gint direction);
-
-/* To be removed */
-static void gtk_text_move_forward_character (GtkText *text);
-static void gtk_text_move_backward_character (GtkText *text);
-static void gtk_text_move_forward_word (GtkText *text);
-static void gtk_text_move_backward_word (GtkText *text);
-static void gtk_text_move_beginning_of_line (GtkText *text);
-static void gtk_text_move_end_of_line (GtkText *text);
-static void gtk_text_move_next_line (GtkText *text);
-static void gtk_text_move_previous_line (GtkText *text);
-
-static void gtk_text_delete_forward_character (GtkText *text);
-static void gtk_text_delete_backward_character (GtkText *text);
-static void gtk_text_delete_forward_word (GtkText *text);
-static void gtk_text_delete_backward_word (GtkText *text);
-static void gtk_text_delete_line (GtkText *text);
-static void gtk_text_delete_to_line_end (GtkText *text);
-static void gtk_text_select_word (GtkText *text,
- guint32 time);
-static void gtk_text_select_line (GtkText *text,
- guint32 time);
-
-static void gtk_text_set_position (GtkOldEditable *old_editable,
- gint position);
-
-/* #define DEBUG_GTK_TEXT */
-
-#if defined(DEBUG_GTK_TEXT) && defined(__GNUC__)
-/* Debugging utilities. */
-static void gtk_text_assert_mark (GtkText *text,
- GtkPropertyMark *mark,
- GtkPropertyMark *before,
- GtkPropertyMark *after,
- const gchar *msg,
- const gchar *where,
- gint line);
-
-static void gtk_text_assert (GtkText *text,
- const gchar *msg,
- gint line);
-static void gtk_text_show_cache_line (GtkText *text, GList *cache,
- const char* what, const char* func, gint line);
-static void gtk_text_show_cache (GtkText *text, const char* func, gint line);
-static void gtk_text_show_adj (GtkText *text,
- GtkAdjustment *adj,
- const char* what,
- const char* func,
- gint line);
-static void gtk_text_show_props (GtkText* test,
- const char* func,
- int line);
-
-#define TDEBUG(args) g_message args
-#define TEXT_ASSERT(text) gtk_text_assert (text,__PRETTY_FUNCTION__,__LINE__)
-#define TEXT_ASSERT_MARK(text,mark,msg) gtk_text_assert_mark (text,mark, \
- __PRETTY_FUNCTION__,msg,__LINE__)
-#define TEXT_SHOW(text) gtk_text_show_cache (text, __PRETTY_FUNCTION__,__LINE__)
-#define TEXT_SHOW_LINE(text,line,msg) gtk_text_show_cache_line (text,line,msg,\
- __PRETTY_FUNCTION__,__LINE__)
-#define TEXT_SHOW_ADJ(text,adj,msg) gtk_text_show_adj (text,adj,msg, \
- __PRETTY_FUNCTION__,__LINE__)
-#else
-#define TDEBUG(args)
-#define TEXT_ASSERT(text)
-#define TEXT_ASSERT_MARK(text,mark,msg)
-#define TEXT_SHOW(text)
-#define TEXT_SHOW_LINE(text,line,msg)
-#define TEXT_SHOW_ADJ(text,adj,msg)
-#endif
-
-static GtkWidgetClass *parent_class = NULL;
-
-/**********************************************************************/
-/* Widget Crap */
-/**********************************************************************/
-
-GtkType
-gtk_text_get_type (void)
-{
- static GtkType text_type = 0;
-
- if (!text_type)
- {
- static const GtkTypeInfo text_info =
- {
- "GtkText",
- sizeof (GtkText),
- sizeof (GtkTextClass),
- (GtkClassInitFunc) gtk_text_class_init,
- (GtkObjectInitFunc) gtk_text_init,
- /* reserved_1 */ NULL,
- /* reserved_2 */ NULL,
- (GtkClassInitFunc) NULL,
- };
-
- const GInterfaceInfo editable_info =
- {
- (GInterfaceInitFunc) gtk_text_editable_init, /* interface_init */
- NULL, /* interface_finalize */
- NULL /* interface_data */
- };
-
- I_("GtkText");
- text_type = gtk_type_unique (GTK_TYPE_OLD_EDITABLE, &text_info);
- g_type_add_interface_static (text_type,
- GTK_TYPE_EDITABLE,
- &editable_info);
- }
-
- return text_type;
-}
-
-static void
-gtk_text_class_init (GtkTextClass *class)
-{
- GObjectClass *gobject_class;
- GtkObjectClass *object_class;
- GtkWidgetClass *widget_class;
- GtkOldEditableClass *old_editable_class;
-
- gobject_class = G_OBJECT_CLASS (class);
- object_class = (GtkObjectClass*) class;
- widget_class = (GtkWidgetClass*) class;
- old_editable_class = (GtkOldEditableClass*) class;
- parent_class = gtk_type_class (GTK_TYPE_OLD_EDITABLE);
-
- gobject_class->finalize = gtk_text_finalize;
- gobject_class->set_property = gtk_text_set_property;
- gobject_class->get_property = gtk_text_get_property;
-
- object_class->destroy = gtk_text_destroy;
-
- widget_class->realize = gtk_text_realize;
- widget_class->unrealize = gtk_text_unrealize;
- widget_class->style_set = gtk_text_style_set;
- widget_class->state_changed = gtk_text_state_changed;
- widget_class->size_request = gtk_text_size_request;
- widget_class->size_allocate = gtk_text_size_allocate;
- widget_class->expose_event = gtk_text_expose;
- widget_class->button_press_event = gtk_text_button_press;
- widget_class->button_release_event = gtk_text_button_release;
- widget_class->motion_notify_event = gtk_text_motion_notify;
- widget_class->key_press_event = gtk_text_key_press;
-
- old_editable_class->set_editable = gtk_text_real_set_editable;
-
- old_editable_class->move_cursor = gtk_text_move_cursor;
- old_editable_class->move_word = gtk_text_move_word;
- old_editable_class->move_page = gtk_text_move_page;
- old_editable_class->move_to_row = gtk_text_move_to_row;
- old_editable_class->move_to_column = gtk_text_move_to_column;
-
- old_editable_class->kill_char = gtk_text_kill_char;
- old_editable_class->kill_word = gtk_text_kill_word;
- old_editable_class->kill_line = gtk_text_kill_line;
-
- old_editable_class->update_text = gtk_text_update_text;
- old_editable_class->get_chars = gtk_text_get_chars;
- old_editable_class->set_selection = gtk_text_set_selection;
- old_editable_class->set_position = gtk_text_set_position;
-
- class->set_scroll_adjustments = gtk_text_set_adjustments;
-
- g_object_class_install_property (gobject_class,
- PROP_HADJUSTMENT,
- g_param_spec_object ("hadjustment",
- P_("Horizontal Adjustment"),
- P_("Horizontal adjustment for the text widget"),
- GTK_TYPE_ADJUSTMENT,
- GTK_PARAM_READWRITE));
-
- g_object_class_install_property (gobject_class,
- PROP_VADJUSTMENT,
- g_param_spec_object ("vadjustment",
- P_("Vertical Adjustment"),
- P_("Vertical adjustment for the text widget"),
- GTK_TYPE_ADJUSTMENT,
- GTK_PARAM_READWRITE));
-
- g_object_class_install_property (gobject_class,
- PROP_LINE_WRAP,
- g_param_spec_boolean ("line-wrap",
- P_("Line Wrap"),
- P_("Whether lines are wrapped at widget edges"),
- TRUE,
- GTK_PARAM_READWRITE));
-
- g_object_class_install_property (gobject_class,
- PROP_WORD_WRAP,
- g_param_spec_boolean ("word-wrap",
- P_("Word Wrap"),
- P_("Whether words are wrapped at widget edges"),
- FALSE,
- GTK_PARAM_READWRITE));
-
- widget_class->set_scroll_adjustments_signal =
- gtk_signal_new (I_("set-scroll-adjustments"),
- GTK_RUN_LAST,
- GTK_CLASS_TYPE (object_class),
- GTK_SIGNAL_OFFSET (GtkTextClass, set_scroll_adjustments),
- _gtk_marshal_VOID__OBJECT_OBJECT,
- GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
-}
-
-static void
-gtk_text_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- GtkText *text;
-
- text = GTK_TEXT (object);
-
- switch (prop_id)
- {
- case PROP_HADJUSTMENT:
- gtk_text_set_adjustments (text,
- g_value_get_object (value),
- text->vadj);
- break;
- case PROP_VADJUSTMENT:
- gtk_text_set_adjustments (text,
- text->hadj,
- g_value_get_object (value));
- break;
- case PROP_LINE_WRAP:
- gtk_text_set_line_wrap (text, g_value_get_boolean (value));
- break;
- case PROP_WORD_WRAP:
- gtk_text_set_word_wrap (text, g_value_get_boolean (value));
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gtk_text_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec)
-{
- GtkText *text;
-
- text = GTK_TEXT (object);
-
- switch (prop_id)
- {
- case PROP_HADJUSTMENT:
- g_value_set_object (value, text->hadj);
- break;
- case PROP_VADJUSTMENT:
- g_value_set_object (value, text->vadj);
- break;
- case PROP_LINE_WRAP:
- g_value_set_boolean (value, text->line_wrap);
- break;
- case PROP_WORD_WRAP:
- g_value_set_boolean (value, text->word_wrap);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gtk_text_editable_init (GtkEditableClass *iface)
-{
- iface->insert_text = gtk_text_insert_text;
- iface->delete_text = gtk_text_delete_text;
-}
-
-static void
-gtk_text_init (GtkText *text)
-{
- gtk_widget_set_can_focus (GTK_WIDGET (text), TRUE);
-
- text->text_area = NULL;
- text->hadj = NULL;
- text->vadj = NULL;
- text->gc = NULL;
- text->bg_gc = NULL;
- text->line_wrap_bitmap = NULL;
- text->line_arrow_bitmap = NULL;
-
- text->use_wchar = FALSE;
- text->text.ch = g_new (guchar, INITIAL_BUFFER_SIZE);
- text->text_len = INITIAL_BUFFER_SIZE;
-
- text->scratch_buffer.ch = NULL;
- text->scratch_buffer_len = 0;
-
- text->freeze_count = 0;
-
- text->default_tab_width = 4;
- text->tab_stops = NULL;
-
- text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
- text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
-
- text->line_start_cache = NULL;
- text->first_cut_pixels = 0;
-
- text->line_wrap = TRUE;
- text->word_wrap = FALSE;
-
- text->timer = 0;
- text->button = 0;
-
- text->current_font = NULL;
-
- init_properties (text);
-
- GTK_OLD_EDITABLE (text)->editable = FALSE;
-
- gtk_text_set_adjustments (text, NULL, NULL);
- gtk_editable_set_position (GTK_EDITABLE (text), 0);
-}
-
-GtkWidget*
-gtk_text_new (GtkAdjustment *hadj,
- GtkAdjustment *vadj)
-{
- GtkWidget *text;
-
- if (hadj)
- g_return_val_if_fail (GTK_IS_ADJUSTMENT (hadj), NULL);
- if (vadj)
- g_return_val_if_fail (GTK_IS_ADJUSTMENT (vadj), NULL);
-
- text = g_object_new (GTK_TYPE_TEXT,
- "hadjustment", hadj,
- "vadjustment", vadj,
- NULL);
-
- return text;
-}
-
-void
-gtk_text_set_word_wrap (GtkText *text,
- gboolean word_wrap)
-{
- g_return_if_fail (GTK_IS_TEXT (text));
-
- text->word_wrap = (word_wrap != FALSE);
-
- if (gtk_widget_get_realized (GTK_WIDGET (text)))
- {
- recompute_geometry (text);
- gtk_widget_queue_draw (GTK_WIDGET (text));
- }
-
- g_object_notify (G_OBJECT (text), "word-wrap");
-}
-
-void
-gtk_text_set_line_wrap (GtkText *text,
- gboolean line_wrap)
-{
- g_return_if_fail (GTK_IS_TEXT (text));
-
- text->line_wrap = (line_wrap != FALSE);
-
- if (gtk_widget_get_realized (GTK_WIDGET (text)))
- {
- recompute_geometry (text);
- gtk_widget_queue_draw (GTK_WIDGET (text));
- }
-
- g_object_notify (G_OBJECT (text), "line-wrap");
-}
-
-void
-gtk_text_set_editable (GtkText *text,
- gboolean is_editable)
-{
- g_return_if_fail (GTK_IS_TEXT (text));
-
- gtk_editable_set_editable (GTK_EDITABLE (text), is_editable);
-}
-
-static void
-gtk_text_real_set_editable (GtkOldEditable *old_editable,
- gboolean is_editable)
-{
- GtkText *text;
-
- g_return_if_fail (GTK_IS_TEXT (old_editable));
-
- text = GTK_TEXT (old_editable);
-
- old_editable->editable = (is_editable != FALSE);
-
- if (is_editable)
- draw_cursor (text, TRUE);
- else
- undraw_cursor (text, TRUE);
-}
-
-void
-gtk_text_set_adjustments (GtkText *text,
- GtkAdjustment *hadj,
- GtkAdjustment *vadj)
-{
- g_return_if_fail (GTK_IS_TEXT (text));
- if (hadj)
- g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
- else
- hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
- if (vadj)
- g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
- else
- vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
-
- if (text->hadj && (text->hadj != hadj))
- {
- gtk_signal_disconnect_by_data (GTK_OBJECT (text->hadj), text);
- g_object_unref (text->hadj);
- }
-
- if (text->vadj && (text->vadj != vadj))
- {
- gtk_signal_disconnect_by_data (GTK_OBJECT (text->vadj), text);
- g_object_unref (text->vadj);
- }
-
- g_object_freeze_notify (G_OBJECT (text));
- if (text->hadj != hadj)
- {
- text->hadj = hadj;
- g_object_ref_sink (text->hadj);
-
- gtk_signal_connect (GTK_OBJECT (text->hadj), "changed",
- G_CALLBACK (gtk_text_adjustment),
- text);
- gtk_signal_connect (GTK_OBJECT (text->hadj), "value-changed",
- G_CALLBACK (gtk_text_adjustment),
- text);
- gtk_signal_connect (GTK_OBJECT (text->hadj), "destroy",
- G_CALLBACK (gtk_text_adjustment_destroyed),
- text);
- gtk_text_adjustment (hadj, text);
-
- g_object_notify (G_OBJECT (text), "hadjustment");
- }
-
- if (text->vadj != vadj)
- {
- text->vadj = vadj;
- g_object_ref_sink (text->vadj);
-
- gtk_signal_connect (GTK_OBJECT (text->vadj), "changed",
- G_CALLBACK (gtk_text_adjustment),
- text);
- gtk_signal_connect (GTK_OBJECT (text->vadj), "value-changed",
- G_CALLBACK (gtk_text_adjustment),
- text);
- gtk_signal_connect (GTK_OBJECT (text->vadj), "destroy",
- G_CALLBACK (gtk_text_adjustment_destroyed),
- text);
- gtk_text_adjustment (vadj, text);
-
- g_object_notify (G_OBJECT (text), "vadjustment");
- }
- g_object_thaw_notify (G_OBJECT (text));
-}
-
-void
-gtk_text_set_point (GtkText *text,
- guint index)
-{
- g_return_if_fail (GTK_IS_TEXT (text));
- g_return_if_fail (index <= TEXT_LENGTH (text));
-
- text->point = find_mark (text, index);
-}
-
-guint
-gtk_text_get_point (GtkText *text)
-{
- g_return_val_if_fail (GTK_IS_TEXT (text), 0);
-
- return text->point.index;
-}
-
-guint
-gtk_text_get_length (GtkText *text)
-{
- g_return_val_if_fail (GTK_IS_TEXT (text), 0);
-
- return TEXT_LENGTH (text);
-}
-
-void
-gtk_text_freeze (GtkText *text)
-{
- g_return_if_fail (GTK_IS_TEXT (text));
-
- text->freeze_count++;
-}
-
-void
-gtk_text_thaw (GtkText *text)
-{
- g_return_if_fail (GTK_IS_TEXT (text));
-
- if (text->freeze_count)
- if (!(--text->freeze_count) && gtk_widget_get_realized (GTK_WIDGET (text)))
- {
- recompute_geometry (text);
- gtk_widget_queue_draw (GTK_WIDGET (text));
- }
-}
-
-void
-gtk_text_insert (GtkText *text,
- GdkFont *font,
- const GdkColor *fore,
- const GdkColor *back,
- const char *chars,
- gint nchars)
-{
- GtkOldEditable *old_editable = GTK_OLD_EDITABLE (text);
- gboolean frozen = FALSE;
-
- gint new_line_count = 1;
- guint old_height = 0;
- guint length;
- guint i;
- gint numwcs;
-
- g_return_if_fail (GTK_IS_TEXT (text));
-
- if (nchars < 0)
- length = strlen (chars);
- else
- length = nchars;
-
- if (length == 0)
- return;
-
- if (!text->freeze_count && (length > FREEZE_LENGTH))
- {
- gtk_text_freeze (text);
- frozen = TRUE;
- }
-
- if (!text->freeze_count && (text->line_start_cache != NULL))
- {
- find_line_containing_point (text, text->point.index, TRUE);
- old_height = total_line_height (text, text->current_line, 1);
- }
-
- if ((TEXT_LENGTH (text) == 0) && (text->use_wchar == FALSE))
- {
- GtkWidget *widget = GTK_WIDGET (text);
-
- gtk_widget_ensure_style (widget);
- if ((widget->style) &&
- (gtk_style_get_font (widget->style)->type == GDK_FONT_FONTSET))
- {
- text->use_wchar = TRUE;
- g_free (text->text.ch);
- text->text.wc = g_new (GdkWChar, INITIAL_BUFFER_SIZE);
- text->text_len = INITIAL_BUFFER_SIZE;
- g_free (text->scratch_buffer.ch);
- text->scratch_buffer.wc = NULL;
- text->scratch_buffer_len = 0;
- }
- }
-
- move_gap (text, text->point.index);
- make_forward_space (text, length);
-
- if (text->use_wchar)
- {
- char *chars_nt = (char *)chars;
- if (nchars > 0)
- {
- chars_nt = g_new (char, length+1);
- memcpy (chars_nt, chars, length);
- chars_nt[length] = 0;
- }
- numwcs = gdk_mbstowcs (text->text.wc + text->gap_position, chars_nt,
- length);
- if (chars_nt != chars)
- g_free(chars_nt);
- if (numwcs < 0)
- numwcs = 0;
- }
- else
- {
- numwcs = length;
- memcpy(text->text.ch + text->gap_position, chars, length);
- }
-
- if (!text->freeze_count && (text->line_start_cache != NULL))
- {
- if (text->use_wchar)
- {
- for (i=0; i<numwcs; i++)
- if (text->text.wc[text->gap_position + i] == '\n')
- new_line_count++;
- }
- else
- {
- for (i=0; i<numwcs; i++)
- if (text->text.ch[text->gap_position + i] == '\n')
- new_line_count++;
- }
- }
-
- if (numwcs > 0)
- {
- insert_text_property (text, font, fore, back, numwcs);
-
- text->gap_size -= numwcs;
- text->gap_position += numwcs;
-
- if (text->point.index < text->first_line_start_index)
- text->first_line_start_index += numwcs;
- if (text->point.index < old_editable->selection_start_pos)
- old_editable->selection_start_pos += numwcs;
- if (text->point.index < old_editable->selection_end_pos)
- old_editable->selection_end_pos += numwcs;
- /* We'll reset the cursor later anyways if we aren't frozen */
- if (text->point.index < text->cursor_mark.index)
- text->cursor_mark.index += numwcs;
-
- advance_mark_n (&text->point, numwcs);
-
- if (!text->freeze_count && (text->line_start_cache != NULL))
- insert_expose (text, old_height, numwcs, new_line_count);
- }
-
- if (frozen)
- gtk_text_thaw (text);
-}
-
-gboolean
-gtk_text_backward_delete (GtkText *text,
- guint nchars)
-{
- g_return_val_if_fail (GTK_IS_TEXT (text), FALSE);
-
- if (nchars > text->point.index || nchars <= 0)
- return FALSE;
-
- gtk_text_set_point (text, text->point.index - nchars);
-
- return gtk_text_forward_delete (text, nchars);
-}
-
-gboolean
-gtk_text_forward_delete (GtkText *text,
- guint nchars)
-{
- guint old_lines = 0, old_height = 0;
- GtkOldEditable *old_editable = GTK_OLD_EDITABLE (text);
- gboolean frozen = FALSE;
-
- g_return_val_if_fail (GTK_IS_TEXT (text), FALSE);
-
- if (text->point.index + nchars > TEXT_LENGTH (text) || nchars <= 0)
- return FALSE;
-
- if (!text->freeze_count && nchars > FREEZE_LENGTH)
- {
- gtk_text_freeze (text);
- frozen = TRUE;
- }
-
- if (!text->freeze_count && text->line_start_cache != NULL)
- {
- /* We need to undraw the cursor here, since we may later
- * delete the cursor's property
- */
- undraw_cursor (text, FALSE);
- find_line_containing_point (text, text->point.index, TRUE);
- compute_lines_pixels (text, nchars, &old_lines, &old_height);
- }
-
- /* FIXME, or resizing after deleting will be odd */
- if (text->point.index < text->first_line_start_index)
- {
- if (text->point.index + nchars >= text->first_line_start_index)
- {
- text->first_line_start_index = text->point.index;
- while ((text->first_line_start_index > 0) &&
- (GTK_TEXT_INDEX (text, text->first_line_start_index - 1)
- != LINE_DELIM))
- text->first_line_start_index -= 1;
-
- }
- else
- text->first_line_start_index -= nchars;
- }
-
- if (text->point.index < old_editable->selection_start_pos)
- old_editable->selection_start_pos -=
- MIN(nchars, old_editable->selection_start_pos - text->point.index);
- if (text->point.index < old_editable->selection_end_pos)
- old_editable->selection_end_pos -=
- MIN(nchars, old_editable->selection_end_pos - text->point.index);
- /* We'll reset the cursor later anyways if we aren't frozen */
- if (text->point.index < text->cursor_mark.index)
- move_mark_n (&text->cursor_mark,
- -MIN(nchars, text->cursor_mark.index - text->point.index));
-
- move_gap (text, text->point.index);
-
- text->gap_size += nchars;
-
- delete_text_property (text, nchars);
-
- if (!text->freeze_count && (text->line_start_cache != NULL))
- {
- delete_expose (text, nchars, old_lines, old_height);
- draw_cursor (text, FALSE);
- }
-
- if (frozen)
- gtk_text_thaw (text);
-
- return TRUE;
-}
-
-static void
-gtk_text_set_position (GtkOldEditable *old_editable,
- gint position)
-{
- GtkText *text = (GtkText *) old_editable;
-
- if (position < 0)
- position = gtk_text_get_length (text);
-
- undraw_cursor (text, FALSE);
- text->cursor_mark = find_mark (text, position);
- find_cursor (text, TRUE);
- draw_cursor (text, FALSE);
- gtk_editable_select_region (GTK_EDITABLE (old_editable), 0, 0);
-}
-
-static gchar *
-gtk_text_get_chars (GtkOldEditable *old_editable,
- gint start_pos,
- gint end_pos)
-{
- GtkText *text;
-
- gchar *retval;
-
- g_return_val_if_fail (GTK_IS_TEXT (old_editable), NULL);
- text = GTK_TEXT (old_editable);
-
- if (end_pos < 0)
- end_pos = TEXT_LENGTH (text);
-
- if ((start_pos < 0) ||
- (end_pos > TEXT_LENGTH (text)) ||
- (end_pos < start_pos))
- return NULL;
-
- move_gap (text, TEXT_LENGTH (text));
- make_forward_space (text, 1);
-
- if (text->use_wchar)
- {
- GdkWChar ch;
- ch = text->text.wc[end_pos];
- text->text.wc[end_pos] = 0;
- retval = gdk_wcstombs (text->text.wc + start_pos);
- text->text.wc[end_pos] = ch;
- }
- else
- {
- guchar ch;
- ch = text->text.ch[end_pos];
- text->text.ch[end_pos] = 0;
- retval = g_strdup ((gchar *)(text->text.ch + start_pos));
- text->text.ch[end_pos] = ch;
- }
-
- return retval;
-}
-
-
-static void
-gtk_text_destroy (GtkObject *object)
-{
- GtkText *text = GTK_TEXT (object);
-
- if (text->hadj)
- {
- gtk_signal_disconnect_by_data (GTK_OBJECT (text->hadj), text);
- g_object_unref (text->hadj);
- text->hadj = NULL;
- }
- if (text->vadj)
- {
- gtk_signal_disconnect_by_data (GTK_OBJECT (text->vadj), text);
- g_object_unref (text->vadj);
- text->vadj = NULL;
- }
-
- if (text->timer)
- {
- g_source_remove (text->timer);
- text->timer = 0;
- }
-
- GTK_OBJECT_CLASS(parent_class)->destroy (object);
-}
-
-static void
-gtk_text_finalize (GObject *object)
-{
- GtkText *text = GTK_TEXT (object);
- GList *tmp_list;
-
- /* Clean up the internal structures */
- if (text->use_wchar)
- g_free (text->text.wc);
- else
- g_free (text->text.ch);
-
- tmp_list = text->text_properties;
- while (tmp_list)
- {
- destroy_text_property (tmp_list->data);
- tmp_list = tmp_list->next;
- }
-
- if (text->current_font)
- text_font_unref (text->current_font);
-
- g_list_free (text->text_properties);
-
- if (text->use_wchar)
- {
- g_free (text->scratch_buffer.wc);
- }
- else
- {
- g_free (text->scratch_buffer.ch);
- }
-
- g_list_free (text->tab_stops);
-
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static void
-gtk_text_realize (GtkWidget *widget)
-{
- GtkText *text = GTK_TEXT (widget);
- GtkOldEditable *old_editable = GTK_OLD_EDITABLE (widget);
- GdkWindowAttr attributes;
- gint attributes_mask;
-
- gtk_widget_set_realized (widget, TRUE);
-
- attributes.window_type = GDK_WINDOW_CHILD;
- attributes.x = widget->allocation.x;
- attributes.y = widget->allocation.y;
- attributes.width = widget->allocation.width;
- attributes.height = widget->allocation.height;
- attributes.wclass = GDK_INPUT_OUTPUT;
- attributes.visual = gtk_widget_get_visual (widget);
- attributes.colormap = gtk_widget_get_colormap (widget);
- attributes.event_mask = gtk_widget_get_events (widget);
- attributes.event_mask |= (GDK_EXPOSURE_MASK |
- GDK_BUTTON_PRESS_MASK |
- GDK_BUTTON_RELEASE_MASK |
- GDK_BUTTON_MOTION_MASK |
- GDK_ENTER_NOTIFY_MASK |
- GDK_LEAVE_NOTIFY_MASK |
- GDK_KEY_PRESS_MASK);
- attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
-
- widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
- gdk_window_set_user_data (widget->window, text);
-
- attributes.x = (widget->style->xthickness + TEXT_BORDER_ROOM);
- attributes.y = (widget->style->ythickness + TEXT_BORDER_ROOM);
- attributes.width = MAX (1, (gint)widget->allocation.width - (gint)attributes.x * 2);
- attributes.height = MAX (1, (gint)widget->allocation.height - (gint)attributes.y * 2);
-
- attributes.cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget), GDK_XTERM);
- attributes_mask |= GDK_WA_CURSOR;
-
- text->text_area = gdk_window_new (widget->window, &attributes, attributes_mask);
- gdk_window_set_user_data (text->text_area, text);
-
- gdk_cursor_unref (attributes.cursor); /* The X server will keep it around as long as necessary */
-
- widget->style = gtk_style_attach (widget->style, widget->window);
-
- /* Can't call gtk_style_set_background here because it's handled specially */
- gdk_window_set_background (widget->window, &widget->style->base[gtk_widget_get_state (widget)]);
- gdk_window_set_background (text->text_area, &widget->style->base[gtk_widget_get_state (widget)]);
-
- if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
- text->bg_gc = create_bg_gc (text);
-
- text->line_wrap_bitmap = gdk_bitmap_create_from_data (text->text_area,
- (gchar*) line_wrap_bits,
- line_wrap_width,
- line_wrap_height);
-
- text->line_arrow_bitmap = gdk_bitmap_create_from_data (text->text_area,
- (gchar*) line_arrow_bits,
- line_arrow_width,
- line_arrow_height);
-
- text->gc = gdk_gc_new (text->text_area);
- gdk_gc_set_exposures (text->gc, TRUE);
- gdk_gc_set_foreground (text->gc, &widget->style->text[GTK_STATE_NORMAL]);
-
- realize_properties (text);
- gdk_window_show (text->text_area);
- init_properties (text);
-
- if (old_editable->selection_start_pos != old_editable->selection_end_pos)
- gtk_old_editable_claim_selection (old_editable, TRUE, GDK_CURRENT_TIME);
-
- recompute_geometry (text);
-}
-
-static void
-gtk_text_style_set (GtkWidget *widget,
- GtkStyle *previous_style)
-{
- GtkText *text = GTK_TEXT (widget);
-
- if (gtk_widget_get_realized (widget))
- {
- gdk_window_set_background (widget->window, &widget->style->base[gtk_widget_get_state (widget)]);
- gdk_window_set_background (text->text_area, &widget->style->base[gtk_widget_get_state (widget)]);
-
- if (text->bg_gc)
- {
- g_object_unref (text->bg_gc);
- text->bg_gc = NULL;
- }
-
- if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
- text->bg_gc = create_bg_gc (text);
-
- recompute_geometry (text);
- }
-
- if (text->current_font)
- text_font_unref (text->current_font);
- text->current_font = get_text_font (gtk_style_get_font (widget->style));
-}
-
-static void
-gtk_text_state_changed (GtkWidget *widget,
- GtkStateType previous_state)
-{
- GtkText *text = GTK_TEXT (widget);
-
- if (gtk_widget_get_realized (widget))
- {
- gdk_window_set_background (widget->window, &widget->style->base[gtk_widget_get_state (widget)]);
- gdk_window_set_background (text->text_area, &widget->style->base[gtk_widget_get_state (widget)]);
- }
-}
-
-static void
-gtk_text_unrealize (GtkWidget *widget)
-{
- GtkText *text = GTK_TEXT (widget);
-
- gdk_window_set_user_data (text->text_area, NULL);
- gdk_window_destroy (text->text_area);
- text->text_area = NULL;
-
- g_object_unref (text->gc);
- text->gc = NULL;
-
- if (text->bg_gc)
- {
- g_object_unref (text->bg_gc);
- text->bg_gc = NULL;
- }
-
- g_object_unref (text->line_wrap_bitmap);
- g_object_unref (text->line_arrow_bitmap);
-
- unrealize_properties (text);
-
- free_cache (text);
-
- GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
-}
-
-static void
-clear_focus_area (GtkText *text, gint area_x, gint area_y, gint area_width, gint area_height)
-{
- GtkWidget *widget = GTK_WIDGET (text);
- GdkGC *gc;
-
- gint ythick = TEXT_BORDER_ROOM + widget->style->ythickness;
- gint xthick = TEXT_BORDER_ROOM + widget->style->xthickness;
-
- gint width, height;
-
- if (area_width == 0 || area_height == 0)
- return;
-
- if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
- {
- gdk_drawable_get_size (widget->style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
-
- gdk_gc_set_ts_origin (text->bg_gc,
- (- text->first_onscreen_hor_pixel + xthick) % width,
- (- text->first_onscreen_ver_pixel + ythick) % height);
-
- gc = text->bg_gc;
- }
- else
- gc = widget->style->base_gc[widget->state];
-
- gdk_draw_rectangle (GTK_WIDGET (text)->window, gc, TRUE,
- area_x, area_y, area_width, area_height);
-}
-
-static void
-gtk_text_draw_focus (GtkWidget *widget)
-{
- GtkText *text;
- gint width, height;
- gint x, y;
-
- g_return_if_fail (GTK_IS_TEXT (widget));
-
- text = GTK_TEXT (widget);
-
- if (GTK_WIDGET_DRAWABLE (widget))
- {
- gint ythick = widget->style->ythickness;
- gint xthick = widget->style->xthickness;
- gint xextra = TEXT_BORDER_ROOM;
- gint yextra = TEXT_BORDER_ROOM;
-
- TDEBUG (("in gtk_text_draw_focus\n"));
-
- x = 0;
- y = 0;
- width = widget->allocation.width;
- height = widget->allocation.height;
-
- if (gtk_widget_has_focus (widget))
- {
- x += 1;
- y += 1;
- width -= 2;
- height -= 2;
- xextra -= 1;
- yextra -= 1;
-
- gtk_paint_focus (widget->style, widget->window, gtk_widget_get_state (widget),
- NULL, widget, "text",
- 0, 0,
- widget->allocation.width,
- widget->allocation.height);
- }
-
- gtk_paint_shadow (widget->style, widget->window,
- GTK_STATE_NORMAL, GTK_SHADOW_IN,
- NULL, widget, "text",
- x, y, width, height);
-
- x += xthick;
- y += ythick;
- width -= 2 * xthick;
- height -= 2 * ythick;
-
- /* top rect */
- clear_focus_area (text, x, y, width, yextra);
- /* left rect */
- clear_focus_area (text, x, y + yextra,
- xextra, y + height - 2 * yextra);
- /* right rect */
- clear_focus_area (text, x + width - xextra, y + yextra,
- xextra, height - 2 * ythick);
- /* bottom rect */
- clear_focus_area (text, x, x + height - yextra, width, yextra);
- }
- else
- {
- TDEBUG (("in gtk_text_draw_focus (undrawable !!!)\n"));
- }
-}
-
-static void
-gtk_text_size_request (GtkWidget *widget,
- GtkRequisition *requisition)
-{
- GdkFont *font;
- gint xthickness;
- gint ythickness;
- gint char_height;
- gint char_width;
-
- xthickness = widget->style->xthickness + TEXT_BORDER_ROOM;
- ythickness = widget->style->ythickness + TEXT_BORDER_ROOM;
-
- font = gtk_style_get_font (widget->style);
-
- char_height = MIN_TEXT_HEIGHT_LINES * (font->ascent +
- font->descent);
-
- char_width = MIN_TEXT_WIDTH_LINES * (gdk_text_width (font,
- "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
- 26)
- / 26);
-
- requisition->width = char_width + xthickness * 2;
- requisition->height = char_height + ythickness * 2;
-}
-
-static void
-gtk_text_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation)
-{
- GtkText *text = GTK_TEXT (widget);
-
- widget->allocation = *allocation;
- if (gtk_widget_get_realized (widget))
- {
- gdk_window_move_resize (widget->window,
- allocation->x, allocation->y,
- allocation->width, allocation->height);
-
- gdk_window_move_resize (text->text_area,
- widget->style->xthickness + TEXT_BORDER_ROOM,
- widget->style->ythickness + TEXT_BORDER_ROOM,
- MAX (1, (gint)widget->allocation.width - (gint)(widget->style->xthickness +
- (gint)TEXT_BORDER_ROOM) * 2),
- MAX (1, (gint)widget->allocation.height - (gint)(widget->style->ythickness +
- (gint)TEXT_BORDER_ROOM) * 2));
-
- recompute_geometry (text);
- }
-}
-
-static gint
-gtk_text_expose (GtkWidget *widget,
- GdkEventExpose *event)
-{
- if (event->window == GTK_TEXT (widget)->text_area)
- {
- TDEBUG (("in gtk_text_expose (expose)\n"));
- expose_text (GTK_TEXT (widget), &event->area, TRUE);
- }
- else if (event->count == 0)
- {
- TDEBUG (("in gtk_text_expose (focus)\n"));
- gtk_text_draw_focus (widget);
- }
-
- return FALSE;
-}
-
-static gint
-gtk_text_scroll_timeout (gpointer data)
-{
- GtkText *text;
- gint x, y;
- GdkModifierType mask;
-
- text = GTK_TEXT (data);
-
- text->timer = 0;
- gdk_window_get_pointer (text->text_area, &x, &y, &mask);
-
- if (mask & (GDK_BUTTON1_MASK | GDK_BUTTON3_MASK))
- {
- GdkEvent *event = gdk_event_new (GDK_MOTION_NOTIFY);
-
- event->motion.is_hint = 0;
- event->motion.x = x;
- event->motion.y = y;
- event->motion.state = mask;
-
- gtk_text_motion_notify (GTK_WIDGET (text), (GdkEventMotion *)event);
-
- gdk_event_free (event);
- }
-
- return FALSE;
-}
-
-static gint
-gtk_text_button_press (GtkWidget *widget,
- GdkEventButton *event)
-{
- GtkText *text = GTK_TEXT (widget);
- GtkOldEditable *old_editable = GTK_OLD_EDITABLE (widget);
-
- if (text->button && (event->button != text->button))
- return FALSE;
-
- text->button = event->button;
-
- if (!gtk_widget_has_focus (widget))
- gtk_widget_grab_focus (widget);
-
- if (event->button == 1)
- {
- switch (event->type)
- {
- case GDK_BUTTON_PRESS:
- gtk_grab_add (widget);
-
- undraw_cursor (text, FALSE);
- find_mouse_cursor (text, (gint)event->x, (gint)event->y);
- draw_cursor (text, FALSE);
-
- /* Set it now, so we display things right. We'll unset it
- * later if things don't work out */
- old_editable->has_selection = TRUE;
- gtk_text_set_selection (GTK_OLD_EDITABLE (text),
- text->cursor_mark.index,
- text->cursor_mark.index);
-
- break;
-
- case GDK_2BUTTON_PRESS:
- gtk_text_select_word (text, event->time);
- break;
-
- case GDK_3BUTTON_PRESS:
- gtk_text_select_line (text, event->time);
- break;
-
- default:
- break;
- }
- }
- else if (event->type == GDK_BUTTON_PRESS)
- {
- if ((event->button == 2) && old_editable->editable)
- {
- if (old_editable->selection_start_pos == old_editable->selection_end_pos ||
- old_editable->has_selection)
- {
- undraw_cursor (text, FALSE);
- find_mouse_cursor (text, (gint)event->x, (gint)event->y);
- draw_cursor (text, FALSE);
-
- }
-
- gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
- gdk_atom_intern_static_string ("UTF8_STRING"),
- event->time);
- }
- else
- {
- GdkDisplay *display = gtk_widget_get_display (widget);
-
- gtk_grab_add (widget);
-
- undraw_cursor (text, FALSE);
- find_mouse_cursor (text, event->x, event->y);
- draw_cursor (text, FALSE);
-
- gtk_text_set_selection (GTK_OLD_EDITABLE (text),
- text->cursor_mark.index,
- text->cursor_mark.index);
-
- old_editable->has_selection = FALSE;
- if (gdk_selection_owner_get_for_display (display,
- GDK_SELECTION_PRIMARY) == widget->window)
- gtk_selection_owner_set_for_display (display,
- NULL,
- GDK_SELECTION_PRIMARY,
- event->time);
- }
- }
-
- return TRUE;
-}
-
-static gint
-gtk_text_button_release (GtkWidget *widget,
- GdkEventButton *event)
-{
- GtkText *text = GTK_TEXT (widget);
- GtkOldEditable *old_editable;
- GdkDisplay *display;
-
- gtk_grab_remove (widget);
-
- if (text->button != event->button)
- return FALSE;
-
- text->button = 0;
-
- if (text->timer)
- {
- g_source_remove (text->timer);
- text->timer = 0;
- }
-
- if (event->button == 1)
- {
- text = GTK_TEXT (widget);
- old_editable = GTK_OLD_EDITABLE (widget);
- display = gtk_widget_get_display (widget);
-
- gtk_grab_remove (widget);
-
- old_editable->has_selection = FALSE;
- if (old_editable->selection_start_pos != old_editable->selection_end_pos)
- {
- if (gtk_selection_owner_set_for_display (display,
- widget,
- GDK_SELECTION_PRIMARY,
- event->time))
- old_editable->has_selection = TRUE;
- else
- gtk_text_update_text (old_editable, old_editable->selection_start_pos,
- old_editable->selection_end_pos);
- }
- else
- {
- if (gdk_selection_owner_get_for_display (display,
- GDK_SELECTION_PRIMARY) == widget->window)
- gtk_selection_owner_set_for_display (display,
- NULL,
- GDK_SELECTION_PRIMARY,
- event->time);
- }
- }
- else if (event->button == 3)
- {
- gtk_grab_remove (widget);
- }
-
- undraw_cursor (text, FALSE);
- find_cursor (text, TRUE);
- draw_cursor (text, FALSE);
-
- return TRUE;
-}
-
-static gint
-gtk_text_motion_notify (GtkWidget *widget,
- GdkEventMotion *event)
-{
- GtkText *text = GTK_TEXT (widget);
- gint x, y;
- gint height;
- GdkModifierType mask;
-
- x = event->x;
- y = event->y;
- mask = event->state;
- if (event->is_hint || (text->text_area != event->window))
- {
- gdk_window_get_pointer (text->text_area, &x, &y, &mask);
- }
-
- if ((text->button == 0) ||
- !(mask & (GDK_BUTTON1_MASK | GDK_BUTTON3_MASK)))
- return FALSE;
-
- gdk_drawable_get_size (text->text_area, NULL, &height);
-
- if ((y < 0) || (y > height))
- {
- if (text->timer == 0)
- {
- text->timer = gdk_threads_add_timeout (SCROLL_TIME,
- gtk_text_scroll_timeout,
- text);
-
- if (y < 0)
- scroll_int (text, y/2);
- else
- scroll_int (text, (y - height)/2);
- }
- else
- return FALSE;
- }
-
- undraw_cursor (GTK_TEXT (widget), FALSE);
- find_mouse_cursor (GTK_TEXT (widget), x, y);
- draw_cursor (GTK_TEXT (widget), FALSE);
-
- gtk_text_set_selection (GTK_OLD_EDITABLE (text),
- GTK_OLD_EDITABLE (text)->selection_start_pos,
- text->cursor_mark.index);
-
- return FALSE;
-}
-
-static void
-gtk_text_insert_text (GtkEditable *editable,
- const gchar *new_text,
- gint new_text_length,
- gint *position)
-{
- GtkText *text = GTK_TEXT (editable);
- GdkFont *font;
- GdkColor *fore, *back;
-
- TextProperty *property;
-
- gtk_text_set_point (text, *position);
-
- property = MARK_CURRENT_PROPERTY (&text->point);
- font = property->flags & PROPERTY_FONT ? property->font->gdk_font : NULL;
- fore = property->flags & PROPERTY_FOREGROUND ? &property->fore_color : NULL;
- back = property->flags & PROPERTY_BACKGROUND ? &property->back_color : NULL;
-
- gtk_text_insert (text, font, fore, back, new_text, new_text_length);
-
- *position = text->point.index;
-}
-
-static void
-gtk_text_delete_text (GtkEditable *editable,
- gint start_pos,
- gint end_pos)
-{
- GtkText *text = GTK_TEXT (editable);
-
- g_return_if_fail (start_pos >= 0);
-
- gtk_text_set_point (text, start_pos);
- if (end_pos < 0)
- end_pos = TEXT_LENGTH (text);
-
- if (end_pos > start_pos)
- gtk_text_forward_delete (text, end_pos - start_pos);
-}
-
-static gint
-gtk_text_key_press (GtkWidget *widget,
- GdkEventKey *event)
-{
- GtkText *text = GTK_TEXT (widget);
- GtkOldEditable *old_editable = GTK_OLD_EDITABLE (widget);
- gchar key;
- gint return_val;
- gint position;
-
- key = event->keyval;
- return_val = TRUE;
-
- if ((GTK_OLD_EDITABLE(text)->editable == FALSE))
- {
- switch (event->keyval)
- {
- case GDK_Home:
- case GDK_KP_Home:
- if (event->state & GDK_CONTROL_MASK)
- scroll_int (text, -text->vadj->value);
- else
- return_val = FALSE;
- break;
- case GDK_End:
- case GDK_KP_End:
- if (event->state & GDK_CONTROL_MASK)
- scroll_int (text, +text->vadj->upper);
- else
- return_val = FALSE;
- break;
- case GDK_KP_Page_Up:
- case GDK_Page_Up: scroll_int (text, -text->vadj->page_increment); break;
- case GDK_KP_Page_Down:
- case GDK_Page_Down: scroll_int (text, +text->vadj->page_increment); break;
- case GDK_KP_Up:
- case GDK_Up: scroll_int (text, -KEY_SCROLL_PIXELS); break;
- case GDK_KP_Down:
- case GDK_Down: scroll_int (text, +KEY_SCROLL_PIXELS); break;
- case GDK_Return:
- case GDK_ISO_Enter:
- case GDK_KP_Enter:
- if (event->state & GDK_CONTROL_MASK)
- gtk_signal_emit_by_name (GTK_OBJECT (text), "activate");
- else
- return_val = FALSE;
- break;
- default:
- return_val = FALSE;
- break;
- }
- }
- else
- {
- gint extend_selection;
- gint extend_start;
- guint initial_pos = old_editable->current_pos;
-
- text->point = find_mark (text, text->cursor_mark.index);
-
- extend_selection = event->state & GDK_SHIFT_MASK;
- extend_start = FALSE;
-
- if (extend_selection)
- {
- old_editable->has_selection = TRUE;
-
- if (old_editable->selection_start_pos == old_editable->selection_end_pos)
- {
- old_editable->selection_start_pos = text->point.index;
- old_editable->selection_end_pos = text->point.index;
- }
-
- extend_start = (text->point.index == old_editable->selection_start_pos);
- }
-
- switch (event->keyval)
- {
- case GDK_KP_Home:
- case GDK_Home:
- if (event->state & GDK_CONTROL_MASK)
- move_cursor_buffer_ver (text, -1);
- else
- gtk_text_move_beginning_of_line (text);
- break;
- case GDK_KP_End:
- case GDK_End:
- if (event->state & GDK_CONTROL_MASK)
- move_cursor_buffer_ver (text, +1);
- else
- gtk_text_move_end_of_line (text);
- break;
- case GDK_KP_Page_Up:
- case GDK_Page_Up: move_cursor_page_ver (text, -1); break;
- case GDK_KP_Page_Down:
- case GDK_Page_Down: move_cursor_page_ver (text, +1); break;
- /* CUA has Ctrl-Up/Ctrl-Down as paragraph up down */
- case GDK_KP_Up:
- case GDK_Up: move_cursor_ver (text, -1); break;
- case GDK_KP_Down:
- case GDK_Down: move_cursor_ver (text, +1); break;
- case GDK_KP_Left:
- case GDK_Left:
- if (event->state & GDK_CONTROL_MASK)
- gtk_text_move_backward_word (text);
- else
- move_cursor_hor (text, -1);
- break;
- case GDK_KP_Right:
- case GDK_Right:
- if (event->state & GDK_CONTROL_MASK)
- gtk_text_move_forward_word (text);
- else
- move_cursor_hor (text, +1);
- break;
-
- case GDK_BackSpace:
- if (event->state & GDK_CONTROL_MASK)
- gtk_text_delete_backward_word (text);
- else
- gtk_text_delete_backward_character (text);
- break;
- case GDK_Clear:
- gtk_text_delete_line (text);
- break;
- case GDK_KP_Insert:
- case GDK_Insert:
- if (event->state & GDK_SHIFT_MASK)
- {
- extend_selection = FALSE;
- gtk_editable_paste_clipboard (GTK_EDITABLE (old_editable));
- }
- else if (event->state & GDK_CONTROL_MASK)
- {
- gtk_editable_copy_clipboard (GTK_EDITABLE (old_editable));
- }
- else
- {
- /* gtk_toggle_insert(text) -- IMPLEMENT */
- }
- break;
- case GDK_Delete:
- case GDK_KP_Delete:
- if (event->state & GDK_CONTROL_MASK)
- gtk_text_delete_forward_word (text);
- else if (event->state & GDK_SHIFT_MASK)
- {
- extend_selection = FALSE;
- gtk_editable_cut_clipboard (GTK_EDITABLE (old_editable));
- }
- else
- gtk_text_delete_forward_character (text);
- break;
- case GDK_Tab:
- case GDK_ISO_Left_Tab:
- case GDK_KP_Tab:
- position = text->point.index;
- gtk_editable_insert_text (GTK_EDITABLE (old_editable), "\t", 1, &position);
- break;
- case GDK_KP_Enter:
- case GDK_ISO_Enter:
- case GDK_Return:
- if (event->state & GDK_CONTROL_MASK)
- gtk_signal_emit_by_name (GTK_OBJECT (text), "activate");
- else
- {
- position = text->point.index;
- gtk_editable_insert_text (GTK_EDITABLE (old_editable), "\n", 1, &position);
- }
- break;
- case GDK_Escape:
- /* Don't insert literally */
- return_val = FALSE;
- break;
-
- default:
- return_val = FALSE;
-
- if (event->state & GDK_CONTROL_MASK)
- {
- return_val = TRUE;
- if ((key >= 'A') && (key <= 'Z'))
- key -= 'A' - 'a';
-
- switch (key)
- {
- case 'a':
- gtk_text_move_beginning_of_line (text);
- break;
- case 'b':
- gtk_text_move_backward_character (text);
- break;
- case 'c':
- gtk_editable_copy_clipboard (GTK_EDITABLE (text));
- break;
- case 'd':
- gtk_text_delete_forward_character (text);
- break;
- case 'e':
- gtk_text_move_end_of_line (text);
- break;
- case 'f':
- gtk_text_move_forward_character (text);
- break;
- case 'h':
- gtk_text_delete_backward_character (text);
- break;
- case 'k':
- gtk_text_delete_to_line_end (text);
- break;
- case 'n':
- gtk_text_move_next_line (text);
- break;
- case 'p':
- gtk_text_move_previous_line (text);
- break;
- case 'u':
- gtk_text_delete_line (text);
- break;
- case 'v':
- gtk_editable_paste_clipboard (GTK_EDITABLE (text));
- break;
- case 'w':
- gtk_text_delete_backward_word (text);
- break;
- case 'x':
- gtk_editable_cut_clipboard (GTK_EDITABLE (text));
- break;
- default:
- return_val = FALSE;
- }
-
- break;
- }
- else if (event->state & GDK_MOD1_MASK)
- {
- return_val = TRUE;
- if ((key >= 'A') && (key <= 'Z'))
- key -= 'A' - 'a';
-
- switch (key)
- {
- case 'b':
- gtk_text_move_backward_word (text);
- break;
- case 'd':
- gtk_text_delete_forward_word (text);
- break;
- case 'f':
- gtk_text_move_forward_word (text);
- break;
- default:
- return_val = FALSE;
- }
-
- break;
- }
- else if (event->length > 0)
- {
- extend_selection = FALSE;
-
- gtk_editable_delete_selection (GTK_EDITABLE (old_editable));
- position = text->point.index;
- gtk_editable_insert_text (GTK_EDITABLE (old_editable), event->string, event->length, &position);
-
- return_val = TRUE;
- }
- }
-
- if (return_val && (old_editable->current_pos != initial_pos))
- {
- if (extend_selection)
- {
- if (old_editable->current_pos < old_editable->selection_start_pos)
- gtk_text_set_selection (old_editable, old_editable->current_pos,
- old_editable->selection_end_pos);
- else if (old_editable->current_pos > old_editable->selection_end_pos)
- gtk_text_set_selection (old_editable, old_editable->selection_start_pos,
- old_editable->current_pos);
- else
- {
- if (extend_start)
- gtk_text_set_selection (old_editable, old_editable->current_pos,
- old_editable->selection_end_pos);
- else
- gtk_text_set_selection (old_editable, old_editable->selection_start_pos,
- old_editable->current_pos);
- }
- }
- else
- gtk_text_set_selection (old_editable, 0, 0);
-
- gtk_old_editable_claim_selection (old_editable,
- old_editable->selection_start_pos != old_editable->selection_end_pos,
- event->time);
- }
- }
-
- return return_val;
-}
-
-static void
-gtk_text_adjustment (GtkAdjustment *adjustment,
- GtkText *text)
-{
- g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
- g_return_if_fail (GTK_IS_TEXT (text));
-
- /* Just ignore it if we haven't been size-allocated and realized yet */
- if (text->line_start_cache == NULL)
- return;
-
- if (adjustment == text->hadj)
- {
- g_warning ("horizontal scrolling not implemented");
- }
- else
- {
- gint diff = ((gint)adjustment->value) - text->last_ver_value;
-
- if (diff != 0)
- {
- undraw_cursor (text, FALSE);
-
- if (diff > 0)
- scroll_down (text, diff);
- else /* if (diff < 0) */
- scroll_up (text, diff);
-
- draw_cursor (text, FALSE);
-
- text->last_ver_value = adjustment->value;
- }
- }
-}
-
-static void
-gtk_text_adjustment_destroyed (GtkAdjustment *adjustment,
- GtkText *text)
-{
- g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
- g_return_if_fail (GTK_IS_TEXT (text));
-
- if (adjustment == text->hadj)
- gtk_text_set_adjustments (text, NULL, text->vadj);
- if (adjustment == text->vadj)
- gtk_text_set_adjustments (text, text->hadj, NULL);
-}
-
-
-static GtkPropertyMark
-find_this_line_start_mark (GtkText* text, guint point_position, const GtkPropertyMark* near)
-{
- GtkPropertyMark mark;
-
- mark = find_mark_near (text, point_position, near);
-
- while (mark.index > 0 &&
- GTK_TEXT_INDEX (text, mark.index - 1) != LINE_DELIM)
- decrement_mark (&mark);
-
- return mark;
-}
-
-static void
-init_tab_cont (GtkText* text, PrevTabCont* tab_cont)
-{
- tab_cont->pixel_offset = 0;
- tab_cont->tab_start.tab_stops = text->tab_stops;
- tab_cont->tab_start.to_next_tab = (gintptr) text->tab_stops->data;
-
- if (!tab_cont->tab_start.to_next_tab)
- tab_cont->tab_start.to_next_tab = text->default_tab_width;
-}
-
-static void
-line_params_iterate (GtkText* text,
- const GtkPropertyMark* mark0,
- const PrevTabCont* tab_mark0,
- gint8 alloc,
- void* data,
- LineIteratorFunction iter)
- /* mark0 MUST be a real line start. if ALLOC, allocate line params
- * from a mem chunk. DATA is passed to ITER_CALL, which is called
- * for each line following MARK, iteration continues unless ITER_CALL
- * returns TRUE. */
-{
- GtkPropertyMark mark = *mark0;
- PrevTabCont tab_conts[2];
- LineParams *lp, lpbuf;
- gint tab_cont_index = 0;
-
- if (tab_mark0)
- tab_conts[0] = *tab_mark0;
- else
- init_tab_cont (text, tab_conts);
-
- for (;;)
- {
- if (alloc)
- lp = g_slice_new (LineParams);
- else
- lp = &lpbuf;
-
- *lp = find_line_params (text, &mark, tab_conts + tab_cont_index,
- tab_conts + (tab_cont_index + 1) % 2);
-
- if ((*iter) (text, lp, data))
- return;
-
- if (LAST_INDEX (text, lp->end))
- break;
-
- mark = lp->end;
- advance_mark (&mark);
- tab_cont_index = (tab_cont_index + 1) % 2;
- }
-}
-
-static gint
-fetch_lines_iterator (GtkText* text, LineParams* lp, void* data)
-{
- FetchLinesData *fldata = (FetchLinesData*) data;
-
- fldata->new_lines = g_list_prepend (fldata->new_lines, lp);
-
- switch (fldata->fl_type)
- {
- case FetchLinesCount:
- if (!text->line_wrap || !lp->wraps)
- fldata->data += 1;
-
- if (fldata->data >= fldata->data_max)
- return TRUE;
-
- break;
- case FetchLinesPixels:
-
- fldata->data += LINE_HEIGHT(*lp);
-
- if (fldata->data >= fldata->data_max)
- return TRUE;
-
- break;
- }
-
- return FALSE;
-}
-
-static GList*
-fetch_lines (GtkText* text,
- const GtkPropertyMark* mark0,
- const PrevTabCont* tab_cont0,
- FLType fl_type,
- gint data)
-{
- FetchLinesData fl_data;
-
- fl_data.new_lines = NULL;
- fl_data.data = 0;
- fl_data.data_max = data;
- fl_data.fl_type = fl_type;
-
- line_params_iterate (text, mark0, tab_cont0, TRUE, &fl_data, fetch_lines_iterator);
-
- return g_list_reverse (fl_data.new_lines);
-}
-
-static void
-fetch_lines_backward (GtkText* text)
-{
- GList *new_line_start;
- GtkPropertyMark mark;
-
- if (CACHE_DATA(text->line_start_cache).start.index == 0)
- return;
-
- mark = find_this_line_start_mark (text,
- CACHE_DATA(text->line_start_cache).start.index - 1,
- &CACHE_DATA(text->line_start_cache).start);
-
- new_line_start = fetch_lines (text, &mark, NULL, FetchLinesCount, 1);
-
- while (new_line_start->next)
- new_line_start = new_line_start->next;
-
- new_line_start->next = text->line_start_cache;
- text->line_start_cache->prev = new_line_start;
-}
-
-static void
-fetch_lines_forward (GtkText* text, gint line_count)
-{
- GtkPropertyMark mark;
- GList* line = text->line_start_cache;
-
- while(line->next)
- line = line->next;
-
- mark = CACHE_DATA(line).end;
-
- if (LAST_INDEX (text, mark))
- return;
-
- advance_mark(&mark);
-
- line->next = fetch_lines (text, &mark, &CACHE_DATA(line).tab_cont_next, FetchLinesCount, line_count);
-
- if (line->next)
- line->next->prev = line;
-}
-
-/* Compute the number of lines, and vertical pixels for n characters
- * starting from the point
- */
-static void
-compute_lines_pixels (GtkText* text, guint char_count,
- guint *lines, guint *pixels)
-{
- GList *line = text->current_line;
- gint chars_left = char_count;
-
- *lines = 0;
- *pixels = 0;
-
- /* If chars_left == 0, that means we're joining two lines in a
- * deletion, so add in the values for the next line as well
- */
- for (; line && chars_left >= 0; line = line->next)
- {
- *pixels += LINE_HEIGHT(CACHE_DATA(line));
-
- if (line == text->current_line)
- chars_left -= CACHE_DATA(line).end.index - text->point.index + 1;
- else
- chars_left -= CACHE_DATA(line).end.index - CACHE_DATA(line).start.index + 1;
-
- if (!text->line_wrap || !CACHE_DATA(line).wraps)
- *lines += 1;
- else
- if (chars_left < 0)
- chars_left = 0; /* force another loop */
-
- if (!line->next)
- fetch_lines_forward (text, 1);
- }
-}
-
-static gint
-total_line_height (GtkText* text, GList* line, gint line_count)
-{
- gint height = 0;
-
- for (; line && line_count > 0; line = line->next)
- {
- height += LINE_HEIGHT(CACHE_DATA(line));
-
- if (!text->line_wrap || !CACHE_DATA(line).wraps)
- line_count -= 1;
-
- if (!line->next)
- fetch_lines_forward (text, line_count);
- }
-
- return height;
-}
-
-static void
-swap_lines (GtkText* text, GList* old, GList* new, guint old_line_count)
-{
- if (old == text->line_start_cache)
- {
- GList* last;
-
- for (; old_line_count > 0; old_line_count -= 1)
- {
- while (text->line_start_cache &&
- text->line_wrap &&
- CACHE_DATA(text->line_start_cache).wraps)
- remove_cache_line(text, text->line_start_cache);
-
- remove_cache_line(text, text->line_start_cache);
- }
-
- last = g_list_last (new);
-
- last->next = text->line_start_cache;
-
- if (text->line_start_cache)
- text->line_start_cache->prev = last;
-
- text->line_start_cache = new;
- }
- else
- {
- GList *last;
-
- g_assert (old->prev);
-
- last = old->prev;
-
- for (; old_line_count > 0; old_line_count -= 1)
- {
- while (old && text->line_wrap && CACHE_DATA(old).wraps)
- old = remove_cache_line (text, old);
-
- old = remove_cache_line (text, old);
- }
-
- last->next = new;
- new->prev = last;
-
- last = g_list_last (new);
-
- last->next = old;
-
- if (old)
- old->prev = last;
- }
-}
-
-static void
-correct_cache_delete (GtkText* text, gint nchars, gint lines)
-{
- GList* cache = text->current_line;
- gint i;
-
- for (i = 0; cache && i < lines; i += 1, cache = cache->next)
- /* nothing */;
-
- for (; cache; cache = cache->next)
- {
- GtkPropertyMark *start = &CACHE_DATA(cache).start;
- GtkPropertyMark *end = &CACHE_DATA(cache).end;
-
- start->index -= nchars;
- end->index -= nchars;
-
- if (LAST_INDEX (text, text->point) &&
- start->index == text->point.index)
- *start = text->point;
- else if (start->property == text->point.property)
- start->offset = start->index - (text->point.index - text->point.offset);
-
- if (LAST_INDEX (text, text->point) &&
- end->index == text->point.index)
- *end = text->point;
- if (end->property == text->point.property)
- end->offset = end->index - (text->point.index - text->point.offset);
-
- /*TEXT_ASSERT_MARK(text, start, "start");*/
- /*TEXT_ASSERT_MARK(text, end, "end");*/
- }
-}
-
-static void
-delete_expose (GtkText* text, guint nchars, guint old_lines, guint old_pixels)
-{
- GtkWidget *widget = GTK_WIDGET (text);
-
- gint pixel_height;
- guint new_pixels = 0;
- GdkRectangle rect;
- GList* new_line = NULL;
- gint width, height;
-
- text->cursor_virtual_x = 0;
-
- correct_cache_delete (text, nchars, old_lines);
-
- pixel_height = pixel_height_of(text, text->current_line) -
- LINE_HEIGHT(CACHE_DATA(text->current_line));
-
- if (CACHE_DATA(text->current_line).start.index == text->point.index)
- CACHE_DATA(text->current_line).start = text->point;
-
- new_line = fetch_lines (text,
- &CACHE_DATA(text->current_line).start,
- &CACHE_DATA(text->current_line).tab_cont,
- FetchLinesCount,
- 1);
-
- swap_lines (text, text->current_line, new_line, old_lines);
-
- text->current_line = new_line;
-
- new_pixels = total_line_height (text, new_line, 1);
-
- gdk_drawable_get_size (text->text_area, &width, &height);
-
- if (old_pixels != new_pixels)
- {
- if (!widget->style->bg_pixmap[GTK_STATE_NORMAL])
- {
- gdk_draw_drawable (text->text_area,
- text->gc,
- text->text_area,
- 0,
- pixel_height + old_pixels,
- 0,
- pixel_height + new_pixels,
- width,
- height);
- }
- text->vadj->upper += new_pixels;
- text->vadj->upper -= old_pixels;
- adjust_adj (text, text->vadj);
- }
-
- rect.x = 0;
- rect.y = pixel_height;
- rect.width = width;
- rect.height = new_pixels;
-
- expose_text (text, &rect, FALSE);
- gtk_text_draw_focus ( (GtkWidget *) text);
-
- text->cursor_mark = text->point;
-
- find_cursor (text, TRUE);
-
- if (old_pixels != new_pixels)
- {
- if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
- {
- rect.x = 0;
- rect.y = pixel_height + new_pixels;
- rect.width = width;
- rect.height = height - rect.y;
-
- expose_text (text, &rect, FALSE);
- }
- else
- process_exposes (text);
- }
-
- TEXT_ASSERT (text);
- TEXT_SHOW(text);
-}
-
-/* note, the point has already been moved forward */
-static void
-correct_cache_insert (GtkText* text, gint nchars)
-{
- GList *cache;
- GtkPropertyMark *start;
- GtkPropertyMark *end;
- gboolean was_split = FALSE;
-
- /* We need to distinguish whether the property was split in the
- * insert or not, so we check if the point (which points after
- * the insertion here), points to the same character as the
- * point before. Ugh.
- */
- if (nchars > 0)
- {
- GtkPropertyMark tmp_mark = text->point;
- move_mark_n (&tmp_mark, -1);
-
- if (tmp_mark.property != text->point.property)
- was_split = TRUE;
- }
-
- /* If we inserted a property exactly at the beginning of the
- * line, we have to correct here, or fetch_lines will
- * fetch junk.
- */
- start = &CACHE_DATA(text->current_line).start;
-
- /* Check if if we split exactly at the beginning of the line:
- * (was_split won't be set if we are inserting at the end of the text,
- * so we don't check)
- */
- if (start->offset == MARK_CURRENT_PROPERTY (start)->length)
- SET_PROPERTY_MARK (start, start->property->next, 0);
- /* Check if we inserted a property at the beginning of the text: */
- else if (was_split &&
- (start->property == text->point.property) &&
- (start->index == text->point.index - nchars))
- SET_PROPERTY_MARK (start, start->property->prev, 0);
-
- /* Now correct the offsets, and check for start or end marks that
- * are after the point, yet point to a property before the point's
- * property. This indicates that they are meant to point to the
- * second half of a property we split in insert_text_property(), so
- * we fix them up that way.
- */
- cache = text->current_line->next;
-
- for (; cache; cache = cache->next)
- {
- start = &CACHE_DATA(cache).start;
- end = &CACHE_DATA(cache).end;
-
- if (LAST_INDEX (text, text->point) &&
- start->index == text->point.index)
- *start = text->point;
- else if (start->index >= text->point.index - nchars)
- {
- if (!was_split && start->property == text->point.property)
- move_mark_n(start, nchars);
- else
- {
- if (start->property->next &&
- (start->property->next->next == text->point.property))
- {
- g_assert (start->offset >= MARK_CURRENT_PROPERTY (start)->length);
- start->offset -= MARK_CURRENT_PROPERTY (start)->length;
- start->property = text->point.property;
- }
- start->index += nchars;
- }
- }
-
- if (LAST_INDEX (text, text->point) &&
- end->index == text->point.index)
- *end = text->point;
- if (end->index >= text->point.index - nchars)
- {
- if (!was_split && end->property == text->point.property)
- move_mark_n(end, nchars);
- else
- {
- if (end->property->next &&
- (end->property->next->next == text->point.property))
- {
- g_assert (end->offset >= MARK_CURRENT_PROPERTY (end)->length);
- end->offset -= MARK_CURRENT_PROPERTY (end)->length;
- end->property = text->point.property;
- }
- end->index += nchars;
- }
- }
-
- /*TEXT_ASSERT_MARK(text, start, "start");*/
- /*TEXT_ASSERT_MARK(text, end, "end");*/
- }
-}
-
-
-static void
-insert_expose (GtkText* text, guint old_pixels, gint nchars,
- guint new_line_count)
-{
- GtkWidget *widget = GTK_WIDGET (text);
-
- gint pixel_height;
- guint new_pixels = 0;
- GdkRectangle rect;
- GList* new_lines = NULL;
- gint width, height;
-
- text->cursor_virtual_x = 0;
-
- undraw_cursor (text, FALSE);
-
- correct_cache_insert (text, nchars);
-
- TEXT_SHOW_ADJ (text, text->vadj, "vadj");
-
- pixel_height = pixel_height_of(text, text->current_line) -
- LINE_HEIGHT(CACHE_DATA(text->current_line));
-
- new_lines = fetch_lines (text,
- &CACHE_DATA(text->current_line).start,
- &CACHE_DATA(text->current_line).tab_cont,
- FetchLinesCount,
- new_line_count);
-
- swap_lines (text, text->current_line, new_lines, 1);
-
- text->current_line = new_lines;
-
- new_pixels = total_line_height (text, new_lines, new_line_count);
-
- gdk_drawable_get_size (text->text_area, &width, &height);
-
- if (old_pixels != new_pixels)
- {
- if (!widget->style->bg_pixmap[GTK_STATE_NORMAL])
- {
- gdk_draw_drawable (text->text_area,
- text->gc,
- text->text_area,
- 0,
- pixel_height + old_pixels,
- 0,
- pixel_height + new_pixels,
- width,
- height + (old_pixels - new_pixels) - pixel_height);
-
- }
- text->vadj->upper += new_pixels;
- text->vadj->upper -= old_pixels;
- adjust_adj (text, text->vadj);
- }
-
- rect.x = 0;
- rect.y = pixel_height;
- rect.width = width;
- rect.height = new_pixels;
-
- expose_text (text, &rect, FALSE);
- gtk_text_draw_focus ( (GtkWidget *) text);
-
- text->cursor_mark = text->point;
-
- find_cursor (text, TRUE);
-
- draw_cursor (text, FALSE);
-
- if (old_pixels != new_pixels)
- {
- if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
- {
- rect.x = 0;
- rect.y = pixel_height + new_pixels;
- rect.width = width;
- rect.height = height - rect.y;
-
- expose_text (text, &rect, FALSE);
- }
- else
- process_exposes (text);
- }
-
- TEXT_SHOW_ADJ (text, text->vadj, "vadj");
- TEXT_ASSERT (text);
- TEXT_SHOW(text);
-}
-
-/* Text property functions */
-
-static guint
-font_hash (gconstpointer font)
-{
- return gdk_font_id ((const GdkFont*) font);
-}
-
-static GHashTable *font_cache_table = NULL;
-
-static GtkTextFont*
-get_text_font (GdkFont* gfont)
-{
- GtkTextFont* tf;
- gint i;
-
- if (!font_cache_table)
- font_cache_table = g_hash_table_new (font_hash, (GEqualFunc) gdk_font_equal);
-
- tf = g_hash_table_lookup (font_cache_table, gfont);
-
- if (tf)
- {
- tf->ref_count++;
- return tf;
- }
-
- tf = g_new (GtkTextFont, 1);
- tf->ref_count = 1;
-
- tf->gdk_font = gfont;
- gdk_font_ref (gfont);
-
- for(i = 0; i < 256; i += 1)
- tf->char_widths[i] = gdk_char_width (gfont, (char)i);
-
- g_hash_table_insert (font_cache_table, gfont, tf);
-
- return tf;
-}
-
-static void
-text_font_unref (GtkTextFont *text_font)
-{
- text_font->ref_count--;
- if (text_font->ref_count == 0)
- {
- g_hash_table_remove (font_cache_table, text_font->gdk_font);
- gdk_font_unref (text_font->gdk_font);
- g_free (text_font);
- }
-}
-
-static gint
-text_properties_equal (TextProperty* prop, GdkFont* font, const GdkColor *fore, const GdkColor *back)
-{
- if (prop->flags & PROPERTY_FONT)
- {
- gboolean retval;
- GtkTextFont *text_font;
-
- if (!font)
- return FALSE;
-
- text_font = get_text_font (font);
-
- retval = (prop->font == text_font);
- text_font_unref (text_font);
-
- if (!retval)
- return FALSE;
- }
- else
- if (font != NULL)
- return FALSE;
-
- if (prop->flags & PROPERTY_FOREGROUND)
- {
- if (!fore || !gdk_color_equal (&prop->fore_color, fore))
- return FALSE;
- }
- else
- if (fore != NULL)
- return FALSE;
-
- if (prop->flags & PROPERTY_BACKGROUND)
- {
- if (!back || !gdk_color_equal (&prop->back_color, back))
- return FALSE;
- }
- else
- if (back != NULL)
- return FALSE;
-
- return TRUE;
-}
-
-static void
-realize_property (GtkText *text, TextProperty *prop)
-{
- GdkColormap *colormap = gtk_widget_get_colormap (GTK_WIDGET (text));
-
- if (prop->flags & PROPERTY_FOREGROUND)
- gdk_colormap_alloc_color (colormap, &prop->fore_color, FALSE, FALSE);
-
- if (prop->flags & PROPERTY_BACKGROUND)
- gdk_colormap_alloc_color (colormap, &prop->back_color, FALSE, FALSE);
-}
-
-static void
-realize_properties (GtkText *text)
-{
- GList *tmp_list = text->text_properties;
-
- while (tmp_list)
- {
- realize_property (text, tmp_list->data);
-
- tmp_list = tmp_list->next;
- }
-}
-
-static void
-unrealize_property (GtkText *text, TextProperty *prop)
-{
- GdkColormap *colormap = gtk_widget_get_colormap (GTK_WIDGET (text));
-
- if (prop->flags & PROPERTY_FOREGROUND)
- gdk_colormap_free_colors (colormap, &prop->fore_color, 1);
-
- if (prop->flags & PROPERTY_BACKGROUND)
- gdk_colormap_free_colors (colormap, &prop->back_color, 1);
-}
-
-static void
-unrealize_properties (GtkText *text)
-{
- GList *tmp_list = text->text_properties;
-
- while (tmp_list)
- {
- unrealize_property (text, tmp_list->data);
-
- tmp_list = tmp_list->next;
- }
-}
-
-static TextProperty*
-new_text_property (GtkText *text, GdkFont *font, const GdkColor* fore,
- const GdkColor* back, guint length)
-{
- TextProperty *prop;
-
- prop = g_slice_new (TextProperty);
-
- prop->flags = 0;
- if (font)
- {
- prop->flags |= PROPERTY_FONT;
- prop->font = get_text_font (font);
- }
- else
- prop->font = NULL;
-
- if (fore)
- {
- prop->flags |= PROPERTY_FOREGROUND;
- prop->fore_color = *fore;
- }
-
- if (back)
- {
- prop->flags |= PROPERTY_BACKGROUND;
- prop->back_color = *back;
- }
-
- prop->length = length;
-
- if (gtk_widget_get_realized (GTK_WIDGET (text)))
- realize_property (text, prop);
-
- return prop;
-}
-
-static void
-destroy_text_property (TextProperty *prop)
-{
- if (prop->font)
- text_font_unref (prop->font);
-
- g_slice_free (TextProperty, prop);
-}
-
-/* Flop the memory between the point and the gap around like a
- * dead fish. */
-static void
-move_gap (GtkText* text, guint index)
-{
- if (text->gap_position < index)
- {
- gint diff = index - text->gap_position;
-
- if (text->use_wchar)
- g_memmove (text->text.wc + text->gap_position,
- text->text.wc + text->gap_position + text->gap_size,
- diff*sizeof (GdkWChar));
- else
- g_memmove (text->text.ch + text->gap_position,
- text->text.ch + text->gap_position + text->gap_size,
- diff);
-
- text->gap_position = index;
- }
- else if (text->gap_position > index)
- {
- gint diff = text->gap_position - index;
-
- if (text->use_wchar)
- g_memmove (text->text.wc + index + text->gap_size,
- text->text.wc + index,
- diff*sizeof (GdkWChar));
- else
- g_memmove (text->text.ch + index + text->gap_size,
- text->text.ch + index,
- diff);
-
- text->gap_position = index;
- }
-}
-
-/* Increase the gap size. */
-static void
-make_forward_space (GtkText* text, guint len)
-{
- if (text->gap_size < len)
- {
- guint sum = MAX(2*len, MIN_GAP_SIZE) + text->text_end;
-
- if (sum >= text->text_len)
- {
- guint i = 1;
-
- while (i <= sum) i <<= 1;
-
- if (text->use_wchar)
- text->text.wc = (GdkWChar *)g_realloc(text->text.wc,
- i*sizeof(GdkWChar));
- else
- text->text.ch = (guchar *)g_realloc(text->text.ch, i);
- text->text_len = i;
- }
-
- if (text->use_wchar)
- g_memmove (text->text.wc + text->gap_position + text->gap_size + 2*len,
- text->text.wc + text->gap_position + text->gap_size,
- (text->text_end - (text->gap_position + text->gap_size))
- *sizeof(GdkWChar));
- else
- g_memmove (text->text.ch + text->gap_position + text->gap_size + 2*len,
- text->text.ch + text->gap_position + text->gap_size,
- text->text_end - (text->gap_position + text->gap_size));
-
- text->text_end += len*2;
- text->gap_size += len*2;
- }
-}
-
-/* Inserts into the text property list a list element that guarantees
- * that for len characters following the point, text has the correct
- * property. does not move point. adjusts text_properties_point and
- * text_properties_point_offset relative to the current value of
- * point. */
-static void
-insert_text_property (GtkText* text, GdkFont* font,
- const GdkColor *fore, const GdkColor* back, guint len)
-{
- GtkPropertyMark *mark = &text->point;
- TextProperty* forward_prop = MARK_CURRENT_PROPERTY(mark);
- TextProperty* backward_prop = MARK_PREV_PROPERTY(mark);
-
- if (MARK_OFFSET(mark) == 0)
- {
- /* Point is on the boundary of two properties.
- * If it is the same as either, grow, else insert
- * a new one. */
-
- if (text_properties_equal(forward_prop, font, fore, back))
- {
- /* Grow the property in front of us. */
-
- MARK_PROPERTY_LENGTH(mark) += len;
- }
- else if (backward_prop &&
- text_properties_equal(backward_prop, font, fore, back))
- {
- /* Grow property behind us, point property and offset
- * change. */
-
- SET_PROPERTY_MARK (&text->point,
- MARK_PREV_LIST_PTR (mark),
- backward_prop->length);
-
- backward_prop->length += len;
- }
- else if ((MARK_NEXT_LIST_PTR(mark) == NULL) &&
- (forward_prop->length == 1))
- {
- /* Next property just has last position, take it over */
-
- if (gtk_widget_get_realized (GTK_WIDGET (text)))
- unrealize_property (text, forward_prop);
-
- forward_prop->flags = 0;
- if (font)
- {
- forward_prop->flags |= PROPERTY_FONT;
- forward_prop->font = get_text_font (font);
- }
- else
- forward_prop->font = NULL;
-
- if (fore)
- {
- forward_prop->flags |= PROPERTY_FOREGROUND;
- forward_prop->fore_color = *fore;
- }
- if (back)
- {
- forward_prop->flags |= PROPERTY_BACKGROUND;
- forward_prop->back_color = *back;
- }
- forward_prop->length += len;
-
- if (gtk_widget_get_realized (GTK_WIDGET (text)))
- realize_property (text, forward_prop);
- }
- else
- {
- /* Splice a new property into the list. */
-
- GList* new_prop = g_list_alloc();
-
- new_prop->next = MARK_LIST_PTR(mark);
- new_prop->prev = MARK_PREV_LIST_PTR(mark);
- new_prop->next->prev = new_prop;
-
- if (new_prop->prev)
- new_prop->prev->next = new_prop;
-
- new_prop->data = new_text_property (text, font, fore, back, len);
-
- SET_PROPERTY_MARK (mark, new_prop, 0);
- }
- }
- else
- {
- /* The following will screw up the line_start cache,
- * we'll fix it up in correct_cache_insert
- */
-
- /* In the middle of forward_prop, if properties are equal,
- * just add to its length, else split it into two and splice
- * in a new one. */
- if (text_properties_equal (forward_prop, font, fore, back))
- {
- forward_prop->length += len;
- }
- else if ((MARK_NEXT_LIST_PTR(mark) == NULL) &&
- (MARK_OFFSET(mark) + 1 == forward_prop->length))
- {
- /* Inserting before only the last position in the text */
-
- GList* new_prop;
- forward_prop->length -= 1;
-
- new_prop = g_list_alloc();
- new_prop->data = new_text_property (text, font, fore, back, len+1);
- new_prop->prev = MARK_LIST_PTR(mark);
- new_prop->next = NULL;
- MARK_NEXT_LIST_PTR(mark) = new_prop;
-
- SET_PROPERTY_MARK (mark, new_prop, 0);
- }
- else
- {
- GList* new_prop = g_list_alloc();
- GList* new_prop_forward = g_list_alloc();
- gint old_length = forward_prop->length;
- GList* next = MARK_NEXT_LIST_PTR(mark);
-
- /* Set the new lengths according to where they are split. Construct
- * two new properties. */
- forward_prop->length = MARK_OFFSET(mark);
-
- new_prop_forward->data =
- new_text_property(text,
- forward_prop->flags & PROPERTY_FONT ?
- forward_prop->font->gdk_font : NULL,
- forward_prop->flags & PROPERTY_FOREGROUND ?
- &forward_prop->fore_color : NULL,
- forward_prop->flags & PROPERTY_BACKGROUND ?
- &forward_prop->back_color : NULL,
- old_length - forward_prop->length);
-
- new_prop->data = new_text_property(text, font, fore, back, len);
-
- /* Now splice things in. */
- MARK_NEXT_LIST_PTR(mark) = new_prop;
- new_prop->prev = MARK_LIST_PTR(mark);
-
- new_prop->next = new_prop_forward;
- new_prop_forward->prev = new_prop;
-
- new_prop_forward->next = next;
-
- if (next)
- next->prev = new_prop_forward;
-
- SET_PROPERTY_MARK (mark, new_prop, 0);
- }
- }
-
- while (text->text_properties_end->next)
- text->text_properties_end = text->text_properties_end->next;
-
- while (text->text_properties->prev)
- text->text_properties = text->text_properties->prev;
-}
-
-static void
-delete_text_property (GtkText* text, guint nchars)
-{
- /* Delete nchars forward from point. */
-
- /* Deleting text properties is problematical, because we
- * might be storing around marks pointing to a property.
- *
- * The marks in question and how we handle them are:
- *
- * point: We know the new value, since it will be at the
- * end of the deleted text, and we move it there
- * first.
- * cursor: We just remove the mark and set it equal to the
- * point after the operation.
- * line-start cache: We replace most affected lines.
- * The current line gets used to fetch the new
- * lines so, if necessary, (delete at the beginning
- * of a line) we fix it up by setting it equal to the
- * point.
- */
-
- TextProperty *prop;
- GList *tmp;
- gint is_first;
-
- for(; nchars; nchars -= 1)
- {
- prop = MARK_CURRENT_PROPERTY(&text->point);
-
- prop->length -= 1;
-
- if (prop->length == 0)
- {
- tmp = MARK_LIST_PTR (&text->point);
-
- is_first = tmp == text->text_properties;
-
- MARK_LIST_PTR (&text->point) = g_list_remove_link (tmp, tmp);
- text->point.offset = 0;
-
- if (gtk_widget_get_realized (GTK_WIDGET (text)))
- unrealize_property (text, prop);
-
- destroy_text_property (prop);
- g_list_free_1 (tmp);
-
- prop = MARK_CURRENT_PROPERTY (&text->point);
-
- if (is_first)
- text->text_properties = MARK_LIST_PTR (&text->point);
-
- g_assert (prop->length != 0);
- }
- else if (prop->length == text->point.offset)
- {
- MARK_LIST_PTR (&text->point) = MARK_NEXT_LIST_PTR (&text->point);
- text->point.offset = 0;
- }
- }
-
- /* Check to see if we have just the single final position remaining
- * along in a property; if so, combine it with the previous property
- */
- if (LAST_INDEX (text, text->point) &&
- (MARK_OFFSET (&text->point) == 0) &&
- (MARK_PREV_LIST_PTR(&text->point) != NULL))
- {
- tmp = MARK_LIST_PTR (&text->point);
- prop = MARK_CURRENT_PROPERTY(&text->point);
-
- MARK_LIST_PTR (&text->point) = MARK_PREV_LIST_PTR (&text->point);
- MARK_CURRENT_PROPERTY(&text->point)->length += 1;
- MARK_NEXT_LIST_PTR(&text->point) = NULL;
-
- text->point.offset = MARK_CURRENT_PROPERTY(&text->point)->length - 1;
-
- if (gtk_widget_get_realized (GTK_WIDGET (text)))
- unrealize_property (text, prop);
-
- destroy_text_property (prop);
- g_list_free_1 (tmp);
- }
-}
-
-static void
-init_properties (GtkText *text)
-{
- if (!text->text_properties)
- {
- text->text_properties = g_list_alloc();
- text->text_properties->next = NULL;
- text->text_properties->prev = NULL;
- text->text_properties->data = new_text_property (text, NULL, NULL, NULL, 1);
- text->text_properties_end = text->text_properties;
-
- SET_PROPERTY_MARK (&text->point, text->text_properties, 0);
-
- text->point.index = 0;
- }
-}
-
-
-/**********************************************************************/
-/* Property Movement */
-/**********************************************************************/
-
-static void
-move_mark_n (GtkPropertyMark* mark, gint n)
-{
- if (n > 0)
- advance_mark_n(mark, n);
- else if (n < 0)
- decrement_mark_n(mark, -n);
-}
-
-static void
-advance_mark (GtkPropertyMark* mark)
-{
- TextProperty* prop = MARK_CURRENT_PROPERTY (mark);
-
- mark->index += 1;
-
- if (prop->length > mark->offset + 1)
- mark->offset += 1;
- else
- {
- mark->property = MARK_NEXT_LIST_PTR (mark);
- mark->offset = 0;
- }
-}
-
-static void
-advance_mark_n (GtkPropertyMark* mark, gint n)
-{
- gint i;
- TextProperty* prop;
-
- g_assert (n > 0);
-
- i = 0; /* otherwise it migth not be init. */
- prop = MARK_CURRENT_PROPERTY(mark);
-
- if ((prop->length - mark->offset - 1) < n) { /* if we need to change prop. */
- /* to make it easier */
- n += (mark->offset);
- mark->index -= mark->offset;
- mark->offset = 0;
- /* first we take seven-mile-leaps to get to the right text
- * property. */
- while ((n-i) > prop->length - 1) {
- i += prop->length;
- mark->index += prop->length;
- mark->property = MARK_NEXT_LIST_PTR (mark);
- prop = MARK_CURRENT_PROPERTY (mark);
- }
- }
-
- /* and then the rest */
- mark->index += n - i;
- mark->offset += n - i;
-}
-
-static void
-decrement_mark (GtkPropertyMark* mark)
-{
- mark->index -= 1;
-
- if (mark->offset > 0)
- mark->offset -= 1;
- else
- {
- mark->property = MARK_PREV_LIST_PTR (mark);
- mark->offset = MARK_CURRENT_PROPERTY (mark)->length - 1;
- }
-}
-
-static void
-decrement_mark_n (GtkPropertyMark* mark, gint n)
-{
- g_assert (n > 0);
-
- while (mark->offset < n) {
- /* jump to end of prev */
- n -= mark->offset + 1;
- mark->index -= mark->offset + 1;
- mark->property = MARK_PREV_LIST_PTR (mark);
- mark->offset = MARK_CURRENT_PROPERTY (mark)->length - 1;
- }
-
- /* and the rest */
- mark->index -= n;
- mark->offset -= n;
-}
-
-static GtkPropertyMark
-find_mark (GtkText* text, guint mark_position)
-{
- return find_mark_near (text, mark_position, &text->point);
-}
-
-/*
- * You can also start from the end, what a drag.
- */
-static GtkPropertyMark
-find_mark_near (GtkText* text, guint mark_position, const GtkPropertyMark* near)
-{
- gint diffa;
- gint diffb;
-
- GtkPropertyMark mark;
-
- if (!near)
- diffa = mark_position + 1;
- else
- diffa = mark_position - near->index;
-
- diffb = mark_position;
-
- if (diffa < 0)
- diffa = -diffa;
-
- if (diffa <= diffb)
- {
- mark = *near;
- }
- else
- {
- mark.index = 0;
- mark.property = text->text_properties;
- mark.offset = 0;
- }
-
- move_mark_n (&mark, mark_position - mark.index);
-
- return mark;
-}
-
-/* This routine must be called with scroll == FALSE, only when
- * point is at least partially on screen
- */
-
-static void
-find_line_containing_point (GtkText* text, guint point,
- gboolean scroll)
-{
- GList* cache;
- gint height;
-
- text->current_line = NULL;
-
- TEXT_SHOW (text);
-
- /* Scroll backwards until the point is on screen
- */
- while (CACHE_DATA(text->line_start_cache).start.index > point)
- scroll_int (text, - LINE_HEIGHT(CACHE_DATA(text->line_start_cache)));
-
- /* Now additionally try to make sure that the point is fully on screen
- */
- if (scroll)
- {
- while (text->first_cut_pixels != 0 &&
- text->line_start_cache->next &&
- CACHE_DATA(text->line_start_cache->next).start.index > point)
- scroll_int (text, - LINE_HEIGHT(CACHE_DATA(text->line_start_cache->next)));
- }
-
- gdk_drawable_get_size (text->text_area, NULL, &height);
-
- for (cache = text->line_start_cache; cache; cache = cache->next)
- {
- guint lph;
-
- if (CACHE_DATA(cache).end.index >= point ||
- LAST_INDEX(text, CACHE_DATA(cache).end))
- {
- text->current_line = cache; /* LOOK HERE, this proc has an
- * important side effect. */
- return;
- }
-
- TEXT_SHOW_LINE (text, cache, "cache");
-
- if (cache->next == NULL)
- fetch_lines_forward (text, 1);
-
- if (scroll)
- {
- lph = pixel_height_of (text, cache->next);
-
- /* Scroll the bottom of the line is on screen, or until
- * the line is the first onscreen line.
- */
- while (cache->next != text->line_start_cache && lph > height)
- {
- TEXT_SHOW_LINE (text, cache, "cache");
- TEXT_SHOW_LINE (text, cache->next, "cache->next");
- scroll_int (text, LINE_HEIGHT(CACHE_DATA(cache->next)));
- lph = pixel_height_of (text, cache->next);
- }
- }
- }
-
- g_assert_not_reached (); /* Must set text->current_line here */
-}
-
-static guint
-pixel_height_of (GtkText* text, GList* cache_line)
-{
- gint pixels = - text->first_cut_pixels;
- GList *cache = text->line_start_cache;
-
- while (TRUE) {
- pixels += LINE_HEIGHT (CACHE_DATA(cache));
-
- if (cache->data == cache_line->data)
- break;
-
- cache = cache->next;
- }
-
- return pixels;
-}
-
-/**********************************************************************/
-/* Search and Placement */
-/**********************************************************************/
-
-static gint
-find_char_width (GtkText* text, const GtkPropertyMark *mark, const TabStopMark *tab_mark)
-{
- GdkWChar ch;
- gint16* char_widths;
-
- if (LAST_INDEX (text, *mark))
- return 0;
-
- ch = GTK_TEXT_INDEX (text, mark->index);
- char_widths = MARK_CURRENT_TEXT_FONT (text, mark)->char_widths;
-
- if (ch == '\t')
- {
- return tab_mark->to_next_tab * char_widths[' '];
- }
- else if (ch < 256)
- {
- return char_widths[ch];
- }
- else
- {
- return gdk_char_width_wc(MARK_CURRENT_TEXT_FONT(text, mark)->gdk_font, ch);
- }
-}
-
-static void
-advance_tab_mark (GtkText* text, TabStopMark* tab_mark, GdkWChar ch)
-{
- if (tab_mark->to_next_tab == 1 || ch == '\t')
- {
- if (tab_mark->tab_stops->next)
- {
- tab_mark->tab_stops = tab_mark->tab_stops->next;
- tab_mark->to_next_tab = (gintptr) tab_mark->tab_stops->data;
- }
- else
- {
- tab_mark->to_next_tab = text->default_tab_width;
- }
- }
- else
- {
- tab_mark->to_next_tab -= 1;
- }
-}
-
-static void
-advance_tab_mark_n (GtkText* text, TabStopMark* tab_mark, gint n)
- /* No tabs! */
-{
- while (n--)
- advance_tab_mark (text, tab_mark, 0);
-}
-
-static void
-find_cursor_at_line (GtkText* text, const LineParams* start_line, gint pixel_height)
-{
- GdkWChar ch;
-
- GtkPropertyMark mark = start_line->start;
- TabStopMark tab_mark = start_line->tab_cont.tab_start;
- gint pixel_width = LINE_START_PIXEL (*start_line);
-
- while (mark.index < text->cursor_mark.index)
- {
- pixel_width += find_char_width (text, &mark, &tab_mark);
-
- advance_tab_mark (text, &tab_mark, GTK_TEXT_INDEX(text, mark.index));
- advance_mark (&mark);
- }
-
- text->cursor_pos_x = pixel_width;
- text->cursor_pos_y = pixel_height;
- text->cursor_char_offset = start_line->font_descent;
- text->cursor_mark = mark;
-
- ch = LAST_INDEX (text, mark) ?
- LINE_DELIM : GTK_TEXT_INDEX (text, mark.index);
-
- if ((text->use_wchar) ? gdk_iswspace (ch) : isspace (ch))
- text->cursor_char = 0;
- else
- text->cursor_char = ch;
-}
-
-static void
-find_cursor (GtkText* text, gboolean scroll)
-{
- if (gtk_widget_get_realized (GTK_WIDGET (text)))
- {
- find_line_containing_point (text, text->cursor_mark.index, scroll);
-
- if (text->current_line)
- find_cursor_at_line (text,
- &CACHE_DATA(text->current_line),
- pixel_height_of(text, text->current_line));
- }
-
- GTK_OLD_EDITABLE (text)->current_pos = text->cursor_mark.index;
-}
-
-static void
-find_mouse_cursor_at_line (GtkText *text, const LineParams* lp,
- guint line_pixel_height,
- gint button_x)
-{
- GtkPropertyMark mark = lp->start;
- TabStopMark tab_mark = lp->tab_cont.tab_start;
-
- gint char_width = find_char_width(text, &mark, &tab_mark);
- gint pixel_width = LINE_START_PIXEL (*lp) + (char_width+1)/2;
-
- text->cursor_pos_y = line_pixel_height;
-
- for (;;)
- {
- GdkWChar ch = LAST_INDEX (text, mark) ?
- LINE_DELIM : GTK_TEXT_INDEX (text, mark.index);
-
- if (button_x < pixel_width || mark.index == lp->end.index)
- {
- text->cursor_pos_x = pixel_width - (char_width+1)/2;
- text->cursor_mark = mark;
- text->cursor_char_offset = lp->font_descent;
-
- if ((text->use_wchar) ? gdk_iswspace (ch) : isspace (ch))
- text->cursor_char = 0;
- else
- text->cursor_char = ch;
-
- break;
- }
-
- advance_tab_mark (text, &tab_mark, ch);
- advance_mark (&mark);
-
- pixel_width += char_width/2;
-
- char_width = find_char_width (text, &mark, &tab_mark);
-
- pixel_width += (char_width+1)/2;
- }
-}
-
-static void
-find_mouse_cursor (GtkText* text, gint x, gint y)
-{
- gint pixel_height;
- GList* cache = text->line_start_cache;
-
- g_assert (cache);
-
- pixel_height = - text->first_cut_pixels;
-
- for (; cache; cache = cache->next)
- {
- pixel_height += LINE_HEIGHT(CACHE_DATA(cache));
-
- if (y < pixel_height || !cache->next)
- {
- find_mouse_cursor_at_line (text, &CACHE_DATA(cache), pixel_height, x);
-
- find_cursor (text, FALSE);
-
- return;
- }
- }
-}
-
-/**********************************************************************/
-/* Cache Manager */
-/**********************************************************************/
-
-static void
-free_cache (GtkText* text)
-{
- GList* cache = text->line_start_cache;
-
- if (cache)
- {
- while (cache->prev)
- cache = cache->prev;
-
- text->line_start_cache = cache;
- }
-
- for (; cache; cache = cache->next)
- g_slice_free (LineParams, cache->data);
-
- g_list_free (text->line_start_cache);
-
- text->line_start_cache = NULL;
-}
-
-static GList*
-remove_cache_line (GtkText* text, GList* member)
-{
- GList *list;
-
- if (member == NULL)
- return NULL;
-
- if (member == text->line_start_cache)
- text->line_start_cache = text->line_start_cache->next;
-
- if (member->prev)
- member->prev->next = member->next;
-
- if (member->next)
- member->next->prev = member->prev;
-
- list = member->next;
-
- g_slice_free (LineParams, member->data);
- g_list_free_1 (member);
-
- return list;
-}
-
-/**********************************************************************/
-/* Key Motion */
-/**********************************************************************/
-
-static void
-move_cursor_buffer_ver (GtkText *text, int dir)
-{
- undraw_cursor (text, FALSE);
-
- if (dir > 0)
- {
- scroll_int (text, text->vadj->upper);
- text->cursor_mark = find_this_line_start_mark (text,
- TEXT_LENGTH (text),
- &text->cursor_mark);
- }
- else
- {
- scroll_int (text, - text->vadj->value);
- text->cursor_mark = find_this_line_start_mark (text,
- 0,
- &text->cursor_mark);
- }
-
- find_cursor (text, TRUE);
- draw_cursor (text, FALSE);
-}
-
-static void
-move_cursor_page_ver (GtkText *text, int dir)
-{
- scroll_int (text, dir * text->vadj->page_increment);
-}
-
-static void
-move_cursor_ver (GtkText *text, int count)
-{
- gint i;
- GtkPropertyMark mark;
- gint offset;
-
- mark = find_this_line_start_mark (text, text->cursor_mark.index, &text->cursor_mark);
- offset = text->cursor_mark.index - mark.index;
-
- if (offset > text->cursor_virtual_x)
- text->cursor_virtual_x = offset;
-
- if (count < 0)
- {
- if (mark.index == 0)
- return;
-
- decrement_mark (&mark);
- mark = find_this_line_start_mark (text, mark.index, &mark);
- }
- else
- {
- mark = text->cursor_mark;
-
- while (!LAST_INDEX(text, mark) && GTK_TEXT_INDEX(text, mark.index) != LINE_DELIM)
- advance_mark (&mark);
-
- if (LAST_INDEX(text, mark))
- return;
-
- advance_mark (&mark);
- }
-
- for (i=0; i < text->cursor_virtual_x; i += 1, advance_mark(&mark))
- if (LAST_INDEX(text, mark) ||
- GTK_TEXT_INDEX(text, mark.index) == LINE_DELIM)
- break;
-
- undraw_cursor (text, FALSE);
-
- text->cursor_mark = mark;
-
- find_cursor (text, TRUE);
-
- draw_cursor (text, FALSE);
-}
-
-static void
-move_cursor_hor (GtkText *text, int count)
-{
- /* count should be +-1. */
- if ( (count > 0 && text->cursor_mark.index + count > TEXT_LENGTH(text)) ||
- (count < 0 && text->cursor_mark.index < (- count)) ||
- (count == 0) )
- return;
-
- text->cursor_virtual_x = 0;
-
- undraw_cursor (text, FALSE);
-
- move_mark_n (&text->cursor_mark, count);
-
- find_cursor (text, TRUE);
-
- draw_cursor (text, FALSE);
-}
-
-static void
-gtk_text_move_cursor (GtkOldEditable *old_editable,
- gint x,
- gint y)
-{
- if (x > 0)
- {
- while (x-- != 0)
- move_cursor_hor (GTK_TEXT (old_editable), 1);
- }
- else if (x < 0)
- {
- while (x++ != 0)
- move_cursor_hor (GTK_TEXT (old_editable), -1);
- }
-
- if (y > 0)
- {
- while (y-- != 0)
- move_cursor_ver (GTK_TEXT (old_editable), 1);
- }
- else if (y < 0)
- {
- while (y++ != 0)
- move_cursor_ver (GTK_TEXT (old_editable), -1);
- }
-}
-
-static void
-gtk_text_move_forward_character (GtkText *text)
-{
- move_cursor_hor (text, 1);
-}
-
-static void
-gtk_text_move_backward_character (GtkText *text)
-{
- move_cursor_hor (text, -1);
-}
-
-static void
-gtk_text_move_next_line (GtkText *text)
-{
- move_cursor_ver (text, 1);
-}
-
-static void
-gtk_text_move_previous_line (GtkText *text)
-{
- move_cursor_ver (text, -1);
-}
-
-static void
-gtk_text_move_word (GtkOldEditable *old_editable,
- gint n)
-{
- if (n > 0)
- {
- while (n-- != 0)
- gtk_text_move_forward_word (GTK_TEXT (old_editable));
- }
- else if (n < 0)
- {
- while (n++ != 0)
- gtk_text_move_backward_word (GTK_TEXT (old_editable));
- }
-}
-
-static void
-gtk_text_move_forward_word (GtkText *text)
-{
- text->cursor_virtual_x = 0;
-
- undraw_cursor (text, FALSE);
-
- if (text->use_wchar)
- {
- while (!LAST_INDEX (text, text->cursor_mark) &&
- !gdk_iswalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index)))
- advance_mark (&text->cursor_mark);
-
- while (!LAST_INDEX (text, text->cursor_mark) &&
- gdk_iswalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index)))
- advance_mark (&text->cursor_mark);
- }
- else
- {
- while (!LAST_INDEX (text, text->cursor_mark) &&
- !isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index)))
- advance_mark (&text->cursor_mark);
-
- while (!LAST_INDEX (text, text->cursor_mark) &&
- isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index)))
- advance_mark (&text->cursor_mark);
- }
-
- find_cursor (text, TRUE);
- draw_cursor (text, FALSE);
-}
-
-static void
-gtk_text_move_backward_word (GtkText *text)
-{
- text->cursor_virtual_x = 0;
-
- undraw_cursor (text, FALSE);
-
- if (text->use_wchar)
- {
- while ((text->cursor_mark.index > 0) &&
- !gdk_iswalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index-1)))
- decrement_mark (&text->cursor_mark);
-
- while ((text->cursor_mark.index > 0) &&
- gdk_iswalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index-1)))
- decrement_mark (&text->cursor_mark);
- }
- else
- {
- while ((text->cursor_mark.index > 0) &&
- !isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index-1)))
- decrement_mark (&text->cursor_mark);
-
- while ((text->cursor_mark.index > 0) &&
- isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index-1)))
- decrement_mark (&text->cursor_mark);
- }
-
- find_cursor (text, TRUE);
- draw_cursor (text, FALSE);
-}
-
-static void
-gtk_text_move_page (GtkOldEditable *old_editable,
- gint x,
- gint y)
-{
- if (y != 0)
- scroll_int (GTK_TEXT (old_editable),
- y * GTK_TEXT(old_editable)->vadj->page_increment);
-}
-
-static void
-gtk_text_move_to_row (GtkOldEditable *old_editable,
- gint row)
-{
-}
-
-static void
-gtk_text_move_to_column (GtkOldEditable *old_editable,
- gint column)
-{
- GtkText *text;
-
- text = GTK_TEXT (old_editable);
-
- text->cursor_virtual_x = 0; /* FIXME */
-
- undraw_cursor (text, FALSE);
-
- /* Move to the beginning of the line */
- while ((text->cursor_mark.index > 0) &&
- (GTK_TEXT_INDEX (text, text->cursor_mark.index - 1) != LINE_DELIM))
- decrement_mark (&text->cursor_mark);
-
- while (!LAST_INDEX (text, text->cursor_mark) &&
- (GTK_TEXT_INDEX (text, text->cursor_mark.index) != LINE_DELIM))
- {
- if (column > 0)
- column--;
- else if (column == 0)
- break;
-
- advance_mark (&text->cursor_mark);
- }
-
- find_cursor (text, TRUE);
- draw_cursor (text, FALSE);
-}
-
-static void
-gtk_text_move_beginning_of_line (GtkText *text)
-{
- gtk_text_move_to_column (GTK_OLD_EDITABLE (text), 0);
-
-}
-
-static void
-gtk_text_move_end_of_line (GtkText *text)
-{
- gtk_text_move_to_column (GTK_OLD_EDITABLE (text), -1);
-}
-
-static void
-gtk_text_kill_char (GtkOldEditable *old_editable,
- gint direction)
-{
- GtkText *text;
-
- text = GTK_TEXT (old_editable);
-
- if (old_editable->selection_start_pos != old_editable->selection_end_pos)
- gtk_editable_delete_selection (GTK_EDITABLE (old_editable));
- else
- {
- if (direction >= 0)
- {
- if (text->point.index + 1 <= TEXT_LENGTH (text))
- gtk_editable_delete_text (GTK_EDITABLE (old_editable), text->point.index, text->point.index + 1);
- }
- else
- {
- if (text->point.index > 0)
- gtk_editable_delete_text (GTK_EDITABLE (old_editable), text->point.index - 1, text->point.index);
- }
- }
-}
-
-static void
-gtk_text_delete_forward_character (GtkText *text)
-{
- gtk_text_kill_char (GTK_OLD_EDITABLE (text), 1);
-}
-
-static void
-gtk_text_delete_backward_character (GtkText *text)
-{
- gtk_text_kill_char (GTK_OLD_EDITABLE (text), -1);
-}
-
-static void
-gtk_text_kill_word (GtkOldEditable *old_editable,
- gint direction)
-{
- if (old_editable->selection_start_pos != old_editable->selection_end_pos)
- gtk_editable_delete_selection (GTK_EDITABLE (old_editable));
- else
- {
- gint old_pos = old_editable->current_pos;
- if (direction >= 0)
- {
- gtk_text_move_word (old_editable, 1);
- gtk_editable_delete_text (GTK_EDITABLE (old_editable), old_pos, old_editable->current_pos);
- }
- else
- {
- gtk_text_move_word (old_editable, -1);
- gtk_editable_delete_text (GTK_EDITABLE (old_editable), old_editable->current_pos, old_pos);
- }
- }
-}
-
-static void
-gtk_text_delete_forward_word (GtkText *text)
-{
- gtk_text_kill_word (GTK_OLD_EDITABLE (text), 1);
-}
-
-static void
-gtk_text_delete_backward_word (GtkText *text)
-{
- gtk_text_kill_word (GTK_OLD_EDITABLE (text), -1);
-}
-
-static void
-gtk_text_kill_line (GtkOldEditable *old_editable,
- gint direction)
-{
- gint old_pos = old_editable->current_pos;
- if (direction >= 0)
- {
- gtk_text_move_to_column (old_editable, -1);
- gtk_editable_delete_text (GTK_EDITABLE (old_editable), old_pos, old_editable->current_pos);
- }
- else
- {
- gtk_text_move_to_column (old_editable, 0);
- gtk_editable_delete_text (GTK_EDITABLE (old_editable), old_editable->current_pos, old_pos);
- }
-}
-
-static void
-gtk_text_delete_line (GtkText *text)
-{
- gtk_text_move_to_column (GTK_OLD_EDITABLE (text), 0);
- gtk_text_kill_line (GTK_OLD_EDITABLE (text), 1);
-}
-
-static void
-gtk_text_delete_to_line_end (GtkText *text)
-{
- gtk_text_kill_line (GTK_OLD_EDITABLE (text), 1);
-}
-
-static void
-gtk_text_select_word (GtkText *text, guint32 time)
-{
- gint start_pos;
- gint end_pos;
-
- GtkOldEditable *old_editable;
- old_editable = GTK_OLD_EDITABLE (text);
-
- gtk_text_move_backward_word (text);
- start_pos = text->cursor_mark.index;
-
- gtk_text_move_forward_word (text);
- end_pos = text->cursor_mark.index;
-
- old_editable->has_selection = TRUE;
- gtk_text_set_selection (old_editable, start_pos, end_pos);
- gtk_old_editable_claim_selection (old_editable, start_pos != end_pos, time);
-}
-
-static void
-gtk_text_select_line (GtkText *text, guint32 time)
-{
- gint start_pos;
- gint end_pos;
-
- GtkOldEditable *old_editable;
- old_editable = GTK_OLD_EDITABLE (text);
-
- gtk_text_move_beginning_of_line (text);
- start_pos = text->cursor_mark.index;
-
- gtk_text_move_end_of_line (text);
- gtk_text_move_forward_character (text);
- end_pos = text->cursor_mark.index;
-
- old_editable->has_selection = TRUE;
- gtk_text_set_selection (old_editable, start_pos, end_pos);
- gtk_old_editable_claim_selection (old_editable, start_pos != end_pos, time);
-}
-
-/**********************************************************************/
-/* Scrolling */
-/**********************************************************************/
-
-static void
-adjust_adj (GtkText* text, GtkAdjustment* adj)
-{
- gint height;
-
- gdk_drawable_get_size (text->text_area, NULL, &height);
-
- adj->step_increment = MIN (adj->upper, SCROLL_PIXELS);
- adj->page_increment = MIN (adj->upper, height - KEY_SCROLL_PIXELS);
- adj->page_size = MIN (adj->upper, height);
- adj->value = MIN (adj->value, adj->upper - adj->page_size);
- adj->value = MAX (adj->value, 0.0);
-
- gtk_signal_emit_by_name (GTK_OBJECT (adj), "changed");
-}
-
-static gint
-set_vertical_scroll_iterator (GtkText* text, LineParams* lp, void* data)
-{
- SetVerticalScrollData *svdata = (SetVerticalScrollData *) data;
-
- if ((text->first_line_start_index >= lp->start.index) &&
- (text->first_line_start_index <= lp->end.index))
- {
- svdata->mark = lp->start;
-
- if (text->first_line_start_index == lp->start.index)
- {
- text->first_onscreen_ver_pixel = svdata->pixel_height + text->first_cut_pixels;
- }
- else
- {
- text->first_onscreen_ver_pixel = svdata->pixel_height;
- text->first_cut_pixels = 0;
- }
-
- text->vadj->value = text->first_onscreen_ver_pixel;
- }
-
- svdata->pixel_height += LINE_HEIGHT (*lp);
-
- return FALSE;
-}
-
-static gint
-set_vertical_scroll_find_iterator (GtkText* text, LineParams* lp, void* data)
-{
- SetVerticalScrollData *svdata = (SetVerticalScrollData *) data;
- gint return_val;
-
- if (svdata->pixel_height <= (gint) text->vadj->value &&
- svdata->pixel_height + LINE_HEIGHT(*lp) > (gint) text->vadj->value)
- {
- svdata->mark = lp->start;
-
- text->first_cut_pixels = (gint)text->vadj->value - svdata->pixel_height;
- text->first_onscreen_ver_pixel = svdata->pixel_height;
- text->first_line_start_index = lp->start.index;
-
- return_val = TRUE;
- }
- else
- {
- svdata->pixel_height += LINE_HEIGHT (*lp);
-
- return_val = FALSE;
- }
-
- return return_val;
-}
-
-static GtkPropertyMark
-set_vertical_scroll (GtkText* text)
-{
- GtkPropertyMark mark = find_mark (text, 0);
- SetVerticalScrollData data;
- gint height;
- gint orig_value;
-
- data.pixel_height = 0;
- line_params_iterate (text, &mark, NULL, FALSE, &data, set_vertical_scroll_iterator);
-
- text->vadj->upper = data.pixel_height;
- orig_value = (gint) text->vadj->value;
-
- gdk_drawable_get_size (text->text_area, NULL, &height);
-
- text->vadj->step_increment = MIN (text->vadj->upper, SCROLL_PIXELS);
- text->vadj->page_increment = MIN (text->vadj->upper, height - KEY_SCROLL_PIXELS);
- text->vadj->page_size = MIN (text->vadj->upper, height);
- text->vadj->value = MIN (text->vadj->value, text->vadj->upper - text->vadj->page_size);
- text->vadj->value = MAX (text->vadj->value, 0.0);
-
- text->last_ver_value = (gint)text->vadj->value;
-
- gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "changed");
-
- if (text->vadj->value != orig_value)
- {
- /* We got clipped, and don't really know which line to put first. */
- data.pixel_height = 0;
- data.last_didnt_wrap = TRUE;
-
- line_params_iterate (text, &mark, NULL,
- FALSE, &data,
- set_vertical_scroll_find_iterator);
- }
-
- return data.mark;
-}
-
-static void
-scroll_int (GtkText* text, gint diff)
-{
- gdouble upper;
-
- text->vadj->value += diff;
-
- upper = text->vadj->upper - text->vadj->page_size;
- text->vadj->value = MIN (text->vadj->value, upper);
- text->vadj->value = MAX (text->vadj->value, 0.0);
-
- gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "value-changed");
-}
-
-static void
-process_exposes (GtkText *text)
-{
- GdkEvent *event;
-
- /* Make sure graphics expose events are processed before scrolling
- * again */
-
- while ((event = gdk_event_get_graphics_expose (text->text_area)) != NULL)
- {
- gtk_widget_send_expose (GTK_WIDGET (text), event);
- if (event->expose.count == 0)
- {
- gdk_event_free (event);
- break;
- }
- gdk_event_free (event);
- }
-}
-
-static gint last_visible_line_height (GtkText* text)
-{
- GList *cache = text->line_start_cache;
- gint height;
-
- gdk_drawable_get_size (text->text_area, NULL, &height);
-
- for (; cache->next; cache = cache->next)
- if (pixel_height_of(text, cache->next) > height)
- break;
-
- if (cache)
- return pixel_height_of(text, cache) - 1;
- else
- return 0;
-}
-
-static gint first_visible_line_height (GtkText* text)
-{
- if (text->first_cut_pixels)
- return pixel_height_of(text, text->line_start_cache) + 1;
- else
- return 1;
-}
-
-static void
-scroll_down (GtkText* text, gint diff0)
-{
- GdkRectangle rect;
- gint real_diff = 0;
- gint width, height;
-
- text->first_onscreen_ver_pixel += diff0;
-
- while (diff0-- > 0)
- {
- g_assert (text->line_start_cache);
-
- if (text->first_cut_pixels < LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1)
- {
- text->first_cut_pixels += 1;
- }
- else
- {
- text->first_cut_pixels = 0;
-
- text->line_start_cache = text->line_start_cache->next;
-
- text->first_line_start_index =
- CACHE_DATA(text->line_start_cache).start.index;
-
- if (!text->line_start_cache->next)
- fetch_lines_forward (text, 1);
- }
-
- real_diff += 1;
- }
-
- gdk_drawable_get_size (text->text_area, &width, &height);
- if (height > real_diff)
- gdk_draw_drawable (text->text_area,
- text->gc,
- text->text_area,
- 0,
- real_diff,
- 0,
- 0,
- width,
- height - real_diff);
-
- rect.x = 0;
- rect.y = MAX (0, height - real_diff);
- rect.width = width;
- rect.height = MIN (height, real_diff);
-
- expose_text (text, &rect, FALSE);
- gtk_text_draw_focus ( (GtkWidget *) text);
-
- if (text->current_line)
- {
- gint cursor_min;
-
- text->cursor_pos_y -= real_diff;
- cursor_min = drawn_cursor_min(text);
-
- if (cursor_min < 0)
- find_mouse_cursor (text, text->cursor_pos_x,
- first_visible_line_height (text));
- }
-
- if (height > real_diff)
- process_exposes (text);
-}
-
-static void
-scroll_up (GtkText* text, gint diff0)
-{
- gint real_diff = 0;
- GdkRectangle rect;
- gint width, height;
-
- text->first_onscreen_ver_pixel += diff0;
-
- while (diff0++ < 0)
- {
- g_assert (text->line_start_cache);
-
- if (text->first_cut_pixels > 0)
- {
- text->first_cut_pixels -= 1;
- }
- else
- {
- if (!text->line_start_cache->prev)
- fetch_lines_backward (text);
-
- text->line_start_cache = text->line_start_cache->prev;
-
- text->first_line_start_index =
- CACHE_DATA(text->line_start_cache).start.index;
-
- text->first_cut_pixels = LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1;
- }
-
- real_diff += 1;
- }
-
- gdk_drawable_get_size (text->text_area, &width, &height);
- if (height > real_diff)
- gdk_draw_drawable (text->text_area,
- text->gc,
- text->text_area,
- 0,
- 0,
- 0,
- real_diff,
- width,
- height - real_diff);
-
- rect.x = 0;
- rect.y = 0;
- rect.width = width;
- rect.height = MIN (height, real_diff);
-
- expose_text (text, &rect, FALSE);
- gtk_text_draw_focus ( (GtkWidget *) text);
-
- if (text->current_line)
- {
- gint cursor_max;
- gint height;
-
- text->cursor_pos_y += real_diff;
- cursor_max = drawn_cursor_max(text);
- gdk_drawable_get_size (text->text_area, NULL, &height);
-
- if (cursor_max >= height)
- find_mouse_cursor (text, text->cursor_pos_x,
- last_visible_line_height (text));
- }
-
- if (height > real_diff)
- process_exposes (text);
-}
-
-/**********************************************************************/
-/* Display Code */
-/**********************************************************************/
-
-/* Assumes mark starts a line. Calculates the height, width, and
- * displayable character count of a single DISPLAYABLE line. That
- * means that in line-wrap mode, this does may not compute the
- * properties of an entire line. */
-static LineParams
-find_line_params (GtkText* text,
- const GtkPropertyMark* mark,
- const PrevTabCont *tab_cont,
- PrevTabCont *next_cont)
-{
- LineParams lp;
- TabStopMark tab_mark = tab_cont->tab_start;
- guint max_display_pixels;
- GdkWChar ch;
- gint ch_width;
- GdkFont *font;
-
- gdk_drawable_get_size (text->text_area, (gint*) &max_display_pixels, NULL);
- max_display_pixels -= LINE_WRAP_ROOM;
-
- lp.wraps = 0;
- lp.tab_cont = *tab_cont;
- lp.start = *mark;
- lp.end = *mark;
- lp.pixel_width = tab_cont->pixel_offset;
- lp.displayable_chars = 0;
- lp.font_ascent = 0;
- lp.font_descent = 0;
-
- init_tab_cont (text, next_cont);
-
- while (!LAST_INDEX(text, lp.end))
- {
- g_assert (lp.end.property);
-
- ch = GTK_TEXT_INDEX (text, lp.end.index);
- font = MARK_CURRENT_FONT (text, &lp.end);
-
- if (ch == LINE_DELIM)
- {
- /* Newline doesn't count in computation of line height, even
- * if its in a bigger font than the rest of the line. Unless,
- * of course, there are no other characters. */
-
- if (!lp.font_ascent && !lp.font_descent)
- {
- lp.font_ascent = font->ascent;
- lp.font_descent = font->descent;
- }
-
- lp.tab_cont_next = *next_cont;
-
- return lp;
- }
-
- ch_width = find_char_width (text, &lp.end, &tab_mark);
-
- if ((ch_width + lp.pixel_width > max_display_pixels) &&
- (lp.end.index > lp.start.index))
- {
- lp.wraps = 1;
-
- if (text->line_wrap)
- {
- next_cont->tab_start = tab_mark;
- next_cont->pixel_offset = 0;
-
- if (ch == '\t')
- {
- /* Here's the tough case, a tab is wrapping. */
- gint pixels_avail = max_display_pixels - lp.pixel_width;
- gint space_width = MARK_CURRENT_TEXT_FONT(text, &lp.end)->char_widths[' '];
- gint spaces_avail = pixels_avail / space_width;
-
- if (spaces_avail == 0)
- {
- decrement_mark (&lp.end);
- }
- else
- {
- advance_tab_mark (text, &next_cont->tab_start, '\t');
- next_cont->pixel_offset = space_width * (tab_mark.to_next_tab -
- spaces_avail);
- lp.displayable_chars += 1;
- }
- }
- else
- {
- if (text->word_wrap)
- {
- GtkPropertyMark saved_mark = lp.end;
- guint saved_characters = lp.displayable_chars;
-
- lp.displayable_chars += 1;
-
- if (text->use_wchar)
- {
- while (!gdk_iswspace (GTK_TEXT_INDEX (text, lp.end.index)) &&
- (lp.end.index > lp.start.index))
- {
- decrement_mark (&lp.end);
- lp.displayable_chars -= 1;
- }
- }
- else
- {
- while (!isspace(GTK_TEXT_INDEX (text, lp.end.index)) &&
- (lp.end.index > lp.start.index))
- {
- decrement_mark (&lp.end);
- lp.displayable_chars -= 1;
- }
- }
-
- /* If whole line is one word, revert to char wrapping */
- if (lp.end.index == lp.start.index)
- {
- lp.end = saved_mark;
- lp.displayable_chars = saved_characters;
- decrement_mark (&lp.end);
- }
- }
- else
- {
- /* Don't include this character, it will wrap. */
- decrement_mark (&lp.end);
- }
- }
-
- lp.tab_cont_next = *next_cont;
-
- return lp;
- }
- }
- else
- {
- lp.displayable_chars += 1;
- }
-
- lp.font_ascent = MAX (font->ascent, lp.font_ascent);
- lp.font_descent = MAX (font->descent, lp.font_descent);
- lp.pixel_width += ch_width;
-
- advance_mark(&lp.end);
- advance_tab_mark (text, &tab_mark, ch);
- }
-
- if (LAST_INDEX(text, lp.start))
- {
- /* Special case, empty last line. */
- font = MARK_CURRENT_FONT (text, &lp.end);
-
- lp.font_ascent = font->ascent;
- lp.font_descent = font->descent;
- }
-
- lp.tab_cont_next = *next_cont;
-
- return lp;
-}
-
-static void
-expand_scratch_buffer (GtkText* text, guint len)
-{
- if (len >= text->scratch_buffer_len)
- {
- guint i = 1;
-
- while (i <= len && i < MIN_GAP_SIZE) i <<= 1;
-
- if (text->use_wchar)
- {
- if (text->scratch_buffer.wc)
- text->scratch_buffer.wc = g_new (GdkWChar, i);
- else
- text->scratch_buffer.wc = g_realloc (text->scratch_buffer.wc,
- i*sizeof (GdkWChar));
- }
- else
- {
- if (text->scratch_buffer.ch)
- text->scratch_buffer.ch = g_new (guchar, i);
- else
- text->scratch_buffer.ch = g_realloc (text->scratch_buffer.ch, i);
- }
-
- text->scratch_buffer_len = i;
- }
-}
-
-/* Side effect: modifies text->gc
- */
-static void
-draw_bg_rect (GtkText* text, GtkPropertyMark *mark,
- gint x, gint y, gint width, gint height,
- gboolean already_cleared)
-{
- GtkOldEditable *old_editable = GTK_OLD_EDITABLE (text);
-
- if ((mark->index >= MIN(old_editable->selection_start_pos, old_editable->selection_end_pos) &&
- mark->index < MAX(old_editable->selection_start_pos, old_editable->selection_end_pos)))
- {
- gtk_paint_flat_box(GTK_WIDGET(text)->style, text->text_area,
- old_editable->has_selection ?
- GTK_STATE_SELECTED : GTK_STATE_ACTIVE,
- GTK_SHADOW_NONE,
- NULL, GTK_WIDGET(text), "text",
- x, y, width, height);
- }
- else if (!gdk_color_equal(MARK_CURRENT_BACK (text, mark),
- >K_WIDGET(text)->style->base[gtk_widget_get_state (GTK_WIDGET (text))]))
- {
- gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (text, mark));
-
- gdk_draw_rectangle (text->text_area,
- text->gc,
- TRUE, x, y, width, height);
- }
- else if (GTK_WIDGET (text)->style->bg_pixmap[GTK_STATE_NORMAL])
- {
- GdkRectangle rect;
-
- rect.x = x;
- rect.y = y;
- rect.width = width;
- rect.height = height;
-
- clear_area (text, &rect);
- }
- else if (!already_cleared)
- gdk_window_clear_area (text->text_area, x, y, width, height);
-}
-
-static void
-draw_line (GtkText* text,
- gint pixel_start_height,
- LineParams* lp)
-{
- GdkGCValues gc_values;
- gint i;
- gint len = 0;
- guint running_offset = lp->tab_cont.pixel_offset;
- union { GdkWChar *wc; guchar *ch; } buffer;
- GdkGC *fg_gc;
-
- GtkOldEditable *old_editable = GTK_OLD_EDITABLE (text);
-
- guint selection_start_pos = MIN (old_editable->selection_start_pos, old_editable->selection_end_pos);
- guint selection_end_pos = MAX (old_editable->selection_start_pos, old_editable->selection_end_pos);
-
- GtkPropertyMark mark = lp->start;
- TabStopMark tab_mark = lp->tab_cont.tab_start;
- gint pixel_height = pixel_start_height + lp->font_ascent;
- guint chars = lp->displayable_chars;
-
- /* First provide a contiguous segment of memory. This makes reading
- * the code below *much* easier, and only incurs the cost of copying
- * when the line being displayed spans the gap. */
- if (mark.index <= text->gap_position &&
- mark.index + chars > text->gap_position)
- {
- expand_scratch_buffer (text, chars);
-
- if (text->use_wchar)
- {
- for (i = 0; i < chars; i += 1)
- text->scratch_buffer.wc[i] = GTK_TEXT_INDEX(text, mark.index + i);
- buffer.wc = text->scratch_buffer.wc;
- }
- else
- {
- for (i = 0; i < chars; i += 1)
- text->scratch_buffer.ch[i] = GTK_TEXT_INDEX(text, mark.index + i);
- buffer.ch = text->scratch_buffer.ch;
- }
- }
- else
- {
- if (text->use_wchar)
- {
- if (mark.index >= text->gap_position)
- buffer.wc = text->text.wc + mark.index + text->gap_size;
- else
- buffer.wc = text->text.wc + mark.index;
- }
- else
- {
- if (mark.index >= text->gap_position)
- buffer.ch = text->text.ch + mark.index + text->gap_size;
- else
- buffer.ch = text->text.ch + mark.index;
- }
- }
-
-
- if (running_offset > 0)
- {
- draw_bg_rect (text, &mark, 0, pixel_start_height, running_offset,
- LINE_HEIGHT (*lp), TRUE);
- }
-
- while (chars > 0)
- {
- len = 0;
- if ((text->use_wchar && buffer.wc[0] != '\t') ||
- (!text->use_wchar && buffer.ch[0] != '\t'))
- {
- union { GdkWChar *wc; guchar *ch; } next_tab;
- gint pixel_width;
- GdkFont *font;
-
- next_tab.wc = NULL;
- if (text->use_wchar)
- for (i=0; i<chars; i++)
- {
- if (buffer.wc[i] == '\t')
- {
- next_tab.wc = buffer.wc + i;
- break;
- }
- }
- else
- next_tab.ch = memchr (buffer.ch, '\t', chars);
-
- len = MIN (MARK_CURRENT_PROPERTY (&mark)->length - mark.offset, chars);
-
- if (text->use_wchar)
- {
- if (next_tab.wc)
- len = MIN (len, next_tab.wc - buffer.wc);
- }
- else
- {
- if (next_tab.ch)
- len = MIN (len, next_tab.ch - buffer.ch);
- }
-
- if (mark.index < selection_start_pos)
- len = MIN (len, selection_start_pos - mark.index);
- else if (mark.index < selection_end_pos)
- len = MIN (len, selection_end_pos - mark.index);
-
- font = MARK_CURRENT_FONT (text, &mark);
- if (font->type == GDK_FONT_FONT)
- {
- gdk_gc_set_font (text->gc, font);
- gdk_gc_get_values (text->gc, &gc_values);
- if (text->use_wchar)
- pixel_width = gdk_text_width_wc (gc_values.font,
- buffer.wc, len);
- else
- pixel_width = gdk_text_width (gc_values.font,
- (gchar *)buffer.ch, len);
- }
- else
- {
- if (text->use_wchar)
- pixel_width = gdk_text_width_wc (font, buffer.wc, len);
- else
- pixel_width = gdk_text_width (font, (gchar *)buffer.ch, len);
- }
-
- draw_bg_rect (text, &mark, running_offset, pixel_start_height,
- pixel_width, LINE_HEIGHT (*lp), TRUE);
-
- if ((mark.index >= selection_start_pos) &&
- (mark.index < selection_end_pos))
- {
- if (old_editable->has_selection)
- fg_gc = GTK_WIDGET(text)->style->text_gc[GTK_STATE_SELECTED];
- else
- fg_gc = GTK_WIDGET(text)->style->text_gc[GTK_STATE_ACTIVE];
- }
- else
- {
- gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (text, &mark));
- fg_gc = text->gc;
- }
-
- if (text->use_wchar)
- gdk_draw_text_wc (text->text_area, MARK_CURRENT_FONT (text, &mark),
- fg_gc,
- running_offset,
- pixel_height,
- buffer.wc,
- len);
- else
- gdk_draw_text (text->text_area, MARK_CURRENT_FONT (text, &mark),
- fg_gc,
- running_offset,
- pixel_height,
- (gchar *)buffer.ch,
- len);
-
- running_offset += pixel_width;
-
- advance_tab_mark_n (text, &tab_mark, len);
- }
- else
- {
- gint pixels_remaining;
- gint space_width;
- gint spaces_avail;
-
- len = 1;
-
- gdk_drawable_get_size (text->text_area, &pixels_remaining, NULL);
- pixels_remaining -= (LINE_WRAP_ROOM + running_offset);
-
- space_width = MARK_CURRENT_TEXT_FONT(text, &mark)->char_widths[' '];
-
- spaces_avail = pixels_remaining / space_width;
- spaces_avail = MIN (spaces_avail, tab_mark.to_next_tab);
-
- draw_bg_rect (text, &mark, running_offset, pixel_start_height,
- spaces_avail * space_width, LINE_HEIGHT (*lp), TRUE);
-
- running_offset += tab_mark.to_next_tab *
- MARK_CURRENT_TEXT_FONT(text, &mark)->char_widths[' '];
-
- advance_tab_mark (text, &tab_mark, '\t');
- }
-
- advance_mark_n (&mark, len);
- if (text->use_wchar)
- buffer.wc += len;
- else
- buffer.ch += len;
- chars -= len;
- }
-}
-
-static void
-draw_line_wrap (GtkText* text, guint height /* baseline height */)
-{
- gint width;
- GdkPixmap *bitmap;
- gint bitmap_width;
- gint bitmap_height;
-
- if (text->line_wrap)
- {
- bitmap = text->line_wrap_bitmap;
- bitmap_width = line_wrap_width;
- bitmap_height = line_wrap_height;
- }
- else
- {
- bitmap = text->line_arrow_bitmap;
- bitmap_width = line_arrow_width;
- bitmap_height = line_arrow_height;
- }
-
- gdk_drawable_get_size (text->text_area, &width, NULL);
- width -= LINE_WRAP_ROOM;
-
- gdk_gc_set_stipple (text->gc,
- bitmap);
-
- gdk_gc_set_fill (text->gc, GDK_STIPPLED);
-
- gdk_gc_set_foreground (text->gc, >K_WIDGET (text)->style->text[GTK_STATE_NORMAL]);
-
- gdk_gc_set_ts_origin (text->gc,
- width + 1,
- height - bitmap_height - 1);
-
- gdk_draw_rectangle (text->text_area,
- text->gc,
- TRUE,
- width + 1,
- height - bitmap_height - 1 /* one pixel above the baseline. */,
- bitmap_width,
- bitmap_height);
-
- gdk_gc_set_ts_origin (text->gc, 0, 0);
-
- gdk_gc_set_fill (text->gc, GDK_SOLID);
-}
-
-static void
-undraw_cursor (GtkText* text, gint absolute)
-{
- GtkOldEditable *old_editable = (GtkOldEditable *) text;
-
- TDEBUG (("in undraw_cursor\n"));
-
- if (absolute)
- text->cursor_drawn_level = 0;
-
- if ((text->cursor_drawn_level ++ == 0) &&
- (old_editable->selection_start_pos == old_editable->selection_end_pos) &&
- GTK_WIDGET_DRAWABLE (text) && text->line_start_cache)
- {
- GdkFont* font;
-
- g_assert(text->cursor_mark.property);
-
- font = MARK_CURRENT_FONT(text, &text->cursor_mark);
-
- draw_bg_rect (text, &text->cursor_mark,
- text->cursor_pos_x,
- text->cursor_pos_y - text->cursor_char_offset - font->ascent,
- 1, font->ascent + 1, FALSE);
-
- if (text->cursor_char)
- {
- if (font->type == GDK_FONT_FONT)
- gdk_gc_set_font (text->gc, font);
-
- gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (text, &text->cursor_mark));
-
- gdk_draw_text_wc (text->text_area, font,
- text->gc,
- text->cursor_pos_x,
- text->cursor_pos_y - text->cursor_char_offset,
- &text->cursor_char,
- 1);
- }
- }
-}
-
-static gint
-drawn_cursor_min (GtkText* text)
-{
- GdkFont* font;
-
- g_assert(text->cursor_mark.property);
-
- font = MARK_CURRENT_FONT(text, &text->cursor_mark);
-
- return text->cursor_pos_y - text->cursor_char_offset - font->ascent;
-}
-
-static gint
-drawn_cursor_max (GtkText* text)
-{
- g_assert(text->cursor_mark.property);
-
- return text->cursor_pos_y - text->cursor_char_offset;
-}
-
-static void
-draw_cursor (GtkText* text, gint absolute)
-{
- GtkOldEditable *old_editable = (GtkOldEditable *)text;
-
- TDEBUG (("in draw_cursor\n"));
-
- if (absolute)
- text->cursor_drawn_level = 1;
-
- if ((--text->cursor_drawn_level == 0) &&
- old_editable->editable &&
- (old_editable->selection_start_pos == old_editable->selection_end_pos) &&
- GTK_WIDGET_DRAWABLE (text) && text->line_start_cache)
- {
- GdkFont* font;
-
- g_assert (text->cursor_mark.property);
-
- font = MARK_CURRENT_FONT (text, &text->cursor_mark);
-
- gdk_gc_set_foreground (text->gc, >K_WIDGET (text)->style->text[GTK_STATE_NORMAL]);
-
- gdk_draw_line (text->text_area, text->gc, text->cursor_pos_x,
- text->cursor_pos_y - text->cursor_char_offset,
- text->cursor_pos_x,
- text->cursor_pos_y - text->cursor_char_offset - font->ascent);
- }
-}
-
-static GdkGC *
-create_bg_gc (GtkText *text)
-{
- GdkGCValues values;
-
- values.tile = GTK_WIDGET (text)->style->bg_pixmap[GTK_STATE_NORMAL];
- values.fill = GDK_TILED;
-
- return gdk_gc_new_with_values (text->text_area, &values,
- GDK_GC_FILL | GDK_GC_TILE);
-}
-
-static void
-clear_area (GtkText *text, GdkRectangle *area)
-{
- GtkWidget *widget = GTK_WIDGET (text);
-
- if (text->bg_gc)
- {
- gint width, height;
-
- gdk_drawable_get_size (widget->style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
-
- gdk_gc_set_ts_origin (text->bg_gc,
- (- text->first_onscreen_hor_pixel) % width,
- (- text->first_onscreen_ver_pixel) % height);
-
- gdk_draw_rectangle (text->text_area, text->bg_gc, TRUE,
- area->x, area->y, area->width, area->height);
- }
- else
- gdk_window_clear_area (text->text_area, area->x, area->y, area->width, area->height);
-}
-
-static void
-expose_text (GtkText* text, GdkRectangle *area, gboolean cursor)
-{
- GList *cache = text->line_start_cache;
- gint pixels = - text->first_cut_pixels;
- gint min_y = MAX (0, area->y);
- gint max_y = MAX (0, area->y + area->height);
- gint height;
-
- gdk_drawable_get_size (text->text_area, NULL, &height);
- max_y = MIN (max_y, height);
-
- TDEBUG (("in expose x=%d y=%d w=%d h=%d\n", area->x, area->y, area->width, area->height));
-
- clear_area (text, area);
-
- for (; pixels < height; cache = cache->next)
- {
- if (pixels < max_y && (pixels + (gint)LINE_HEIGHT(CACHE_DATA(cache))) >= min_y)
- {
- draw_line (text, pixels, &CACHE_DATA(cache));
-
- if (CACHE_DATA(cache).wraps)
- draw_line_wrap (text, pixels + CACHE_DATA(cache).font_ascent);
- }
-
- if (cursor && gtk_widget_has_focus (GTK_WIDGET (text)))
- {
- if (CACHE_DATA(cache).start.index <= text->cursor_mark.index &&
- CACHE_DATA(cache).end.index >= text->cursor_mark.index)
- {
- /* We undraw and draw the cursor here to get the drawn
- * level right ... FIXME - maybe the second parameter
- * of draw_cursor should work differently
- */
- undraw_cursor (text, FALSE);
- draw_cursor (text, FALSE);
- }
- }
-
- pixels += LINE_HEIGHT(CACHE_DATA(cache));
-
- if (!cache->next)
- {
- fetch_lines_forward (text, 1);
-
- if (!cache->next)
- break;
- }
- }
-}
-
-static void
-gtk_text_update_text (GtkOldEditable *old_editable,
- gint start_pos,
- gint end_pos)
-{
- GtkText *text = GTK_TEXT (old_editable);
-
- GList *cache = text->line_start_cache;
- gint pixels = - text->first_cut_pixels;
- GdkRectangle area;
- gint width;
- gint height;
-
- if (end_pos < 0)
- end_pos = TEXT_LENGTH (text);
-
- if (end_pos < start_pos)
- return;
-
- gdk_drawable_get_size (text->text_area, &width, &height);
- area.x = 0;
- area.y = -1;
- area.width = width;
- area.height = 0;
-
- TDEBUG (("in expose span start=%d stop=%d\n", start_pos, end_pos));
-
- for (; pixels < height; cache = cache->next)
- {
- if (CACHE_DATA(cache).start.index < end_pos)
- {
- if (CACHE_DATA(cache).end.index >= start_pos)
- {
- if (area.y < 0)
- area.y = MAX(0,pixels);
- area.height = pixels + LINE_HEIGHT(CACHE_DATA(cache)) - area.y;
- }
- }
- else
- break;
-
- pixels += LINE_HEIGHT(CACHE_DATA(cache));
-
- if (!cache->next)
- {
- fetch_lines_forward (text, 1);
-
- if (!cache->next)
- break;
- }
- }
-
- if (area.y >= 0)
- expose_text (text, &area, TRUE);
-}
-
-static void
-recompute_geometry (GtkText* text)
-{
- GtkPropertyMark mark, start_mark;
- GList *new_lines;
- gint height;
- gint width;
-
- free_cache (text);
-
- mark = start_mark = set_vertical_scroll (text);
-
- /* We need a real start of a line when calling fetch_lines().
- * not the start of a wrapped line.
- */
- while (mark.index > 0 &&
- GTK_TEXT_INDEX (text, mark.index - 1) != LINE_DELIM)
- decrement_mark (&mark);
-
- gdk_drawable_get_size (text->text_area, &width, &height);
-
- /* Fetch an entire line, to make sure that we get all the text
- * we backed over above, in addition to enough text to fill up
- * the space vertically
- */
-
- new_lines = fetch_lines (text,
- &mark,
- NULL,
- FetchLinesCount,
- 1);
-
- mark = CACHE_DATA (g_list_last (new_lines)).end;
- if (!LAST_INDEX (text, mark))
- {
- advance_mark (&mark);
-
- new_lines = g_list_concat (new_lines,
- fetch_lines (text,
- &mark,
- NULL,
- FetchLinesPixels,
- height + text->first_cut_pixels));
- }
-
- /* Now work forward to the actual first onscreen line */
-
- while (CACHE_DATA (new_lines).start.index < start_mark.index)
- new_lines = new_lines->next;
-
- text->line_start_cache = new_lines;
-
- find_cursor (text, TRUE);
-}
-
-/**********************************************************************/
-/* Selection */
-/**********************************************************************/
-
-static void
-gtk_text_set_selection (GtkOldEditable *old_editable,
- gint start,
- gint end)
-{
- GtkText *text = GTK_TEXT (old_editable);
-
- guint start1, end1, start2, end2;
-
- if (end < 0)
- end = TEXT_LENGTH (text);
-
- start1 = MIN(start,end);
- end1 = MAX(start,end);
- start2 = MIN(old_editable->selection_start_pos, old_editable->selection_end_pos);
- end2 = MAX(old_editable->selection_start_pos, old_editable->selection_end_pos);
-
- if (start2 < start1)
- {
- guint tmp;
-
- tmp = start1; start1 = start2; start2 = tmp;
- tmp = end1; end1 = end2; end2 = tmp;
- }
-
- undraw_cursor (text, FALSE);
- old_editable->selection_start_pos = start;
- old_editable->selection_end_pos = end;
- draw_cursor (text, FALSE);
-
- /* Expose only what changed */
-
- if (start1 < start2)
- gtk_text_update_text (old_editable, start1, MIN(end1, start2));
-
- if (end2 > end1)
- gtk_text_update_text (old_editable, MAX(end1, start2), end2);
- else if (end2 < end1)
- gtk_text_update_text (old_editable, end2, end1);
-}
-
-
-/**********************************************************************/
-/* Debug */
-/**********************************************************************/
-
-#ifdef DEBUG_GTK_TEXT
-static void
-gtk_text_show_cache_line (GtkText *text, GList *cache,
- const char* what, const char* func, gint line)
-{
- LineParams *lp = &CACHE_DATA(cache);
- gint i;
-
- if (cache == text->line_start_cache)
- g_message ("Line Start Cache: ");
-
- if (cache == text->current_line)
- g_message("Current Line: ");
-
- g_message ("%s:%d: cache line %s s=%d,e=%d,lh=%d (",
- func,
- line,
- what,
- lp->start.index,
- lp->end.index,
- LINE_HEIGHT(*lp));
-
- for (i = lp->start.index; i < (lp->end.index + lp->wraps); i += 1)
- g_message ("%c", GTK_TEXT_INDEX (text, i));
-
- g_message (")\n");
-}
-
-static void
-gtk_text_show_cache (GtkText *text, const char* func, gint line)
-{
- GList *l = text->line_start_cache;
-
- if (!l) {
- return;
- }
-
- /* back up to the absolute beginning of the line cache */
- while (l->prev)
- l = l->prev;
-
- g_message ("*** line cache ***\n");
- for (; l; l = l->next)
- gtk_text_show_cache_line (text, l, "all", func, line);
-}
-
-static void
-gtk_text_assert_mark (GtkText *text,
- GtkPropertyMark *mark,
- GtkPropertyMark *before,
- GtkPropertyMark *after,
- const gchar *msg,
- const gchar *where,
- gint line)
-{
- GtkPropertyMark correct_mark = find_mark (text, mark->index);
-
- if (mark->offset != correct_mark.offset ||
- mark->property != correct_mark.property)
- g_warning ("incorrect %s text property marker in %s:%d, index %d -- bad!", where, msg, line, mark->index);
-}
-
-static void
-gtk_text_assert (GtkText *text,
- const gchar *msg,
- gint line)
-{
- GList* cache = text->line_start_cache;
- GtkPropertyMark* before_mark = NULL;
- GtkPropertyMark* after_mark = NULL;
-
- gtk_text_show_props (text, msg, line);
-
- for (; cache->prev; cache = cache->prev)
- /* nothing */;
-
- g_message ("*** line markers ***\n");
-
- for (; cache; cache = cache->next)
- {
- after_mark = &CACHE_DATA(cache).end;
- gtk_text_assert_mark (text, &CACHE_DATA(cache).start, before_mark, after_mark, msg, "start", line);
- before_mark = &CACHE_DATA(cache).start;
-
- if (cache->next)
- after_mark = &CACHE_DATA(cache->next).start;
- else
- after_mark = NULL;
-
- gtk_text_assert_mark (text, &CACHE_DATA(cache).end, before_mark, after_mark, msg, "end", line);
- before_mark = &CACHE_DATA(cache).end;
- }
-}
-
-static void
-gtk_text_show_adj (GtkText *text,
- GtkAdjustment *adj,
- const char* what,
- const char* func,
- gint line)
-{
- g_message ("*** adjustment ***\n");
-
- g_message ("%s:%d: %s adjustment l=%.1f u=%.1f v=%.1f si=%.1f pi=%.1f ps=%.1f\n",
- func,
- line,
- what,
- adj->lower,
- adj->upper,
- adj->value,
- adj->step_increment,
- adj->page_increment,
- adj->page_size);
-}
-
-static void
-gtk_text_show_props (GtkText *text,
- const char* msg,
- int line)
-{
- GList* props = text->text_properties;
- int proplen = 0;
-
- g_message ("%s:%d: ", msg, line);
-
- for (; props; props = props->next)
- {
- TextProperty *p = (TextProperty*)props->data;
-
- proplen += p->length;
-
- g_message ("[%d,%p,", p->length, p);
- if (p->flags & PROPERTY_FONT)
- g_message ("%p,", p->font);
- else
- g_message ("-,");
- if (p->flags & PROPERTY_FOREGROUND)
- g_message ("%ld, ", p->fore_color.pixel);
- else
- g_message ("-,");
- if (p->flags & PROPERTY_BACKGROUND)
- g_message ("%ld] ", p->back_color.pixel);
- else
- g_message ("-] ");
- }
-
- g_message ("\n");
-
- if (proplen - 1 != TEXT_LENGTH(text))
- g_warning ("incorrect property list length in %s:%d -- bad!", msg, line);
-}
-#endif
-
-#define __GTK_TEXT_C__
-#include "gtkaliasdef.c"
projects / gtk4.git / commitdiff