+++ /dev/null
-/* GTK - The GIMP Toolkit
- * Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include "config.h"
-
-#include "gtkcssstylefuncsprivate.h"
-
-#include <errno.h>
-#include <math.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <gdk-pixbuf/gdk-pixbuf.h>
-#include <cairo-gobject.h>
-
-#include "gtkcsscolorvalueprivate.h"
-#include "gtkcssprovider.h"
-#include "gtkcssrgbavalueprivate.h"
-#include "gtkcsstypesprivate.h"
-#include "gtkprivatetypebuiltins.h"
-#include "gtkstylecontextprivate.h"
-#include "gtktypebuiltins.h"
-#include "gtkcsswin32sizevalueprivate.h"
-#include <gdk/gdktextureprivate.h>
-
-
-/* this is in case round() is not provided by the compiler,
- * such as in the case of C89 compilers, like MSVC
- */
-#include "fallback-c89.c"
-
-static GHashTable *parse_funcs = NULL;
-static GHashTable *print_funcs = NULL;
-
-typedef gboolean (* GtkStyleParseFunc) (GtkCssParser *parser,
- GValue *value);
-typedef void (* GtkStylePrintFunc) (const GValue *value,
- GString *string);
-
-static void
-register_conversion_function (GType type,
- GtkStyleParseFunc parse,
- GtkStylePrintFunc print)
-{
- if (parse)
- g_hash_table_insert (parse_funcs, GSIZE_TO_POINTER (type), parse);
- if (print)
- g_hash_table_insert (print_funcs, GSIZE_TO_POINTER (type), print);
-}
-
-static void
-string_append_double (GString *string,
- double d)
-{
- char buf[G_ASCII_DTOSTR_BUF_SIZE];
-
- g_ascii_dtostr (buf, sizeof (buf), d);
- g_string_append (string, buf);
-}
-
-static void
-string_append_string (GString *str,
- const char *string)
-{
- _gtk_css_print_string (str, string);
-}
-
-/*** IMPLEMENTATIONS ***/
-
-static gboolean
-enum_parse (GtkCssParser *parser,
- GType type,
- int *res)
-{
- char *str;
-
- if (_gtk_css_parser_try_enum (parser, type, res))
- return TRUE;
-
- str = _gtk_css_parser_try_ident (parser, TRUE);
- if (str == NULL)
- {
- _gtk_css_parser_error (parser, "Expected an identifier");
- return FALSE;
- }
-
- _gtk_css_parser_error (parser,
- "Unknown value '%s' for enum type '%s'",
- str, g_type_name (type));
- g_free (str);
-
- return FALSE;
-}
-
-static void
-enum_print (int value,
- GType type,
- GString *string)
-{
- GEnumClass *enum_class;
- GEnumValue *enum_value;
-
- enum_class = g_type_class_ref (type);
- enum_value = g_enum_get_value (enum_class, value);
-
- g_string_append (string, enum_value->value_nick);
-
- g_type_class_unref (enum_class);
-}
-
-static gboolean
-font_description_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- PangoFontDescription *font_desc;
- guint mask;
- char *str;
-
- str = _gtk_css_parser_read_value (parser);
- if (str == NULL)
- return FALSE;
-
- font_desc = pango_font_description_from_string (str);
- mask = pango_font_description_get_set_fields (font_desc);
- /* These values are not really correct,
- * but the fields must be set, so we set them to something */
- if ((mask & PANGO_FONT_MASK_FAMILY) == 0)
- pango_font_description_set_family_static (font_desc, "Sans");
- if ((mask & PANGO_FONT_MASK_SIZE) == 0)
- pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
- g_free (str);
- g_value_take_boxed (value, font_desc);
- return TRUE;
-}
-
-static void
-font_description_value_print (const GValue *value,
- GString *string)
-{
- const PangoFontDescription *desc = g_value_get_boxed (value);
-
- if (desc == NULL)
- g_string_append (string, "none");
- else
- {
- char *s = pango_font_description_to_string (desc);
- g_string_append (string, s);
- g_free (s);
- }
-}
-
-static gboolean
-boolean_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- if (_gtk_css_parser_try (parser, "true", TRUE) ||
- _gtk_css_parser_try (parser, "1", TRUE))
- {
- g_value_set_boolean (value, TRUE);
- return TRUE;
- }
- else if (_gtk_css_parser_try (parser, "false", TRUE) ||
- _gtk_css_parser_try (parser, "0", TRUE))
- {
- g_value_set_boolean (value, FALSE);
- return TRUE;
- }
- else
- {
- _gtk_css_parser_error (parser, "Expected a boolean value");
- return FALSE;
- }
-}
-
-static void
-boolean_value_print (const GValue *value,
- GString *string)
-{
- if (g_value_get_boolean (value))
- g_string_append (string, "true");
- else
- g_string_append (string, "false");
-}
-
-static gboolean
-int_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- gint i;
-
- if (_gtk_css_parser_has_prefix (parser, "-gtk"))
- {
- GtkCssValue *cssvalue = gtk_css_win32_size_value_parse (parser, GTK_CSS_PARSE_NUMBER);
-
- if (cssvalue)
- {
- g_value_set_int (value, _gtk_css_number_value_get (cssvalue, 100));
- _gtk_css_value_unref (cssvalue);
- return TRUE;
- }
-
- return FALSE;
- }
-
- if (!_gtk_css_parser_try_int (parser, &i))
- {
- _gtk_css_parser_error (parser, "Expected a valid integer value");
- return FALSE;
- }
-
- g_value_set_int (value, i);
- return TRUE;
-}
-
-static void
-int_value_print (const GValue *value,
- GString *string)
-{
- g_string_append_printf (string, "%d", g_value_get_int (value));
-}
-
-static gboolean
-uint_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- guint u;
-
- if (!_gtk_css_parser_try_uint (parser, &u))
- {
- _gtk_css_parser_error (parser, "Expected a valid unsigned value");
- return FALSE;
- }
-
- g_value_set_uint (value, u);
- return TRUE;
-}
-
-static void
-uint_value_print (const GValue *value,
- GString *string)
-{
- g_string_append_printf (string, "%u", g_value_get_uint (value));
-}
-
-static gboolean
-double_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- gdouble d;
-
- if (!_gtk_css_parser_try_double (parser, &d))
- {
- _gtk_css_parser_error (parser, "Expected a number");
- return FALSE;
- }
-
- g_value_set_double (value, d);
- return TRUE;
-}
-
-static void
-double_value_print (const GValue *value,
- GString *string)
-{
- string_append_double (string, g_value_get_double (value));
-}
-
-static gboolean
-float_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- gdouble d;
-
- if (!_gtk_css_parser_try_double (parser, &d))
- {
- _gtk_css_parser_error (parser, "Expected a number");
- return FALSE;
- }
-
- g_value_set_float (value, d);
- return TRUE;
-}
-
-static void
-float_value_print (const GValue *value,
- GString *string)
-{
- string_append_double (string, g_value_get_float (value));
-}
-
-static gboolean
-string_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- char *str = _gtk_css_parser_read_string (parser);
-
- if (str == NULL)
- return FALSE;
-
- g_value_take_string (value, str);
- return TRUE;
-}
-
-static void
-string_value_print (const GValue *value,
- GString *str)
-{
- string_append_string (str, g_value_get_string (value));
-}
-
-static gboolean
-border_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- GtkBorder border = { 0, };
- guint i;
- int numbers[4];
-
- for (i = 0; i < G_N_ELEMENTS (numbers); i++)
- {
- if (_gtk_css_parser_has_prefix (parser, "-gtk"))
- {
- GtkCssValue *cssvalue = gtk_css_win32_size_value_parse (parser, GTK_CSS_PARSE_NUMBER);
-
- if (cssvalue)
- {
- numbers[i] = _gtk_css_number_value_get (cssvalue, 100);
- _gtk_css_value_unref (cssvalue);
- return TRUE;
- }
-
- return FALSE;
- }
- else
- {
- if (!_gtk_css_parser_try_length (parser, &numbers[i]))
- break;
- }
- }
-
- if (i == 0)
- {
- _gtk_css_parser_error (parser, "Expected valid border");
- return FALSE;
- }
-
- border.top = numbers[0];
- if (i > 1)
- border.right = numbers[1];
- else
- border.right = border.top;
- if (i > 2)
- border.bottom = numbers[2];
- else
- border.bottom = border.top;
- if (i > 3)
- border.left = numbers[3];
- else
- border.left = border.right;
-
- g_value_set_boxed (value, &border);
- return TRUE;
-}
-
-static void
-border_value_print (const GValue *value, GString *string)
-{
- const GtkBorder *border = g_value_get_boxed (value);
-
- if (border == NULL)
- g_string_append (string, "none");
- else if (border->left != border->right)
- g_string_append_printf (string, "%d %d %d %d", border->top, border->right, border->bottom, border->left);
- else if (border->top != border->bottom)
- g_string_append_printf (string, "%d %d %d", border->top, border->right, border->bottom);
- else if (border->top != border->left)
- g_string_append_printf (string, "%d %d", border->top, border->right);
- else
- g_string_append_printf (string, "%d", border->top);
-}
-
-static gboolean
-pattern_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- if (_gtk_css_parser_try (parser, "none", TRUE))
- {
- /* nothing to do here */
- }
- else
- {
- GError *error = NULL;
- GdkTexture *texture;
- GFile *file;
- cairo_surface_t *surface;
- cairo_pattern_t *pattern;
- cairo_matrix_t matrix;
-
- file = _gtk_css_parser_read_url (parser);
- if (file == NULL)
- return FALSE;
-
- texture = gdk_texture_new_from_file (file, &error);
-
- if (texture == NULL)
- {
- _gtk_css_parser_take_error (parser, error);
- return FALSE;
- }
-
- surface = gdk_texture_download_surface (texture);
- pattern = cairo_pattern_create_for_surface (surface);
- cairo_surface_destroy (surface);
-
- cairo_matrix_init_scale (&matrix,
- gdk_texture_get_width (texture),
- gdk_texture_get_height (texture));
- cairo_pattern_set_matrix (pattern, &matrix);
-
- g_object_unref (texture);
-
- g_value_take_boxed (value, pattern);
- }
-
- return TRUE;
-}
-
-static cairo_status_t
-surface_write (void *closure,
- const unsigned char *data,
- unsigned int length)
-{
- g_byte_array_append (closure, data, length);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static void
-surface_print (cairo_surface_t *surface,
- GString * string)
-{
-#if CAIRO_HAS_PNG_FUNCTIONS
- GByteArray *array;
- char *base64;
-
- array = g_byte_array_new ();
- cairo_surface_write_to_png_stream (surface, surface_write, array);
- base64 = g_base64_encode (array->data, array->len);
- g_byte_array_free (array, TRUE);
-
- g_string_append (string, "url(\"data:image/png;base64,");
- g_string_append (string, base64);
- g_string_append (string, "\")");
-
- g_free (base64);
-#else
- g_string_append (string, "none /* you need cairo png functions enabled to make this work */");
-#endif
-}
-
-static void
-pattern_value_print (const GValue *value,
- GString *string)
-{
- cairo_pattern_t *pattern;
- cairo_surface_t *surface;
-
- pattern = g_value_get_boxed (value);
-
- if (pattern == NULL)
- {
- g_string_append (string, "none");
- return;
- }
-
- switch (cairo_pattern_get_type (pattern))
- {
- case CAIRO_PATTERN_TYPE_SURFACE:
- if (cairo_pattern_get_surface (pattern, &surface) != CAIRO_STATUS_SUCCESS)
- {
- g_assert_not_reached ();
- }
- surface_print (surface, string);
- break;
- case CAIRO_PATTERN_TYPE_LINEAR:
- case CAIRO_PATTERN_TYPE_RADIAL:
- case CAIRO_PATTERN_TYPE_MESH:
- case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
- g_string_append (string, "none /* FIXME: add support for printing gradients */");
- break;
- case CAIRO_PATTERN_TYPE_SOLID:
- default:
- g_assert_not_reached ();
- break;
- }
-}
-
-static gboolean
-enum_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- int v;
-
- if (enum_parse (parser, G_VALUE_TYPE (value), &v))
- {
- g_value_set_enum (value, v);
- return TRUE;
- }
-
- return FALSE;
-}
-
-static void
-enum_value_print (const GValue *value,
- GString *string)
-{
- enum_print (g_value_get_enum (value), G_VALUE_TYPE (value), string);
-}
-
-static gboolean
-flags_value_parse (GtkCssParser *parser,
- GValue *value)
-{
- GFlagsClass *flags_class;
- GFlagsValue *flag_value;
- guint flags = 0;
- char *str;
-
- flags_class = g_type_class_ref (G_VALUE_TYPE (value));
-
- do {
- str = _gtk_css_parser_try_ident (parser, TRUE);
- if (str == NULL)
- {
- _gtk_css_parser_error (parser, "Expected an identifier");
- g_type_class_unref (flags_class);
- return FALSE;
- }
-
- flag_value = g_flags_get_value_by_nick (flags_class, str);
- if (!flag_value)
- {
- _gtk_css_parser_error (parser,
- "Unknown flag value '%s' for type '%s'",
- str, g_type_name (G_VALUE_TYPE (value)));
- /* XXX Do we want to return FALSE here? We can get
- * forward-compatibility for new values this way
- */
- g_free (str);
- g_type_class_unref (flags_class);
- return FALSE;
- }
-
- g_free (str);
- }
- while (_gtk_css_parser_try (parser, ",", FALSE));
-
- g_type_class_unref (flags_class);
-
- g_value_set_enum (value, flags);
-
- return TRUE;
-}
-
-static void
-flags_value_print (const GValue *value,
- GString *string)
-{
- GFlagsClass *flags_class;
- guint i, flags;
-
- flags_class = g_type_class_ref (G_VALUE_TYPE (value));
- flags = g_value_get_flags (value);
-
- for (i = 0; i < flags_class->n_values; i++)
- {
- GFlagsValue *flags_value = &flags_class->values[i];
-
- if (flags & flags_value->value)
- {
- if (string->len != 0)
- g_string_append (string, ", ");
-
- g_string_append (string, flags_value->value_nick);
- }
- }
-
- g_type_class_unref (flags_class);
-}
-
-/*** API ***/
-
-static void
-gtk_css_style_funcs_init (void)
-{
- if (G_LIKELY (parse_funcs != NULL))
- return;
-
- parse_funcs = g_hash_table_new (NULL, NULL);
- print_funcs = g_hash_table_new (NULL, NULL);
-
- register_conversion_function (PANGO_TYPE_FONT_DESCRIPTION,
- font_description_value_parse,
- font_description_value_print);
- register_conversion_function (G_TYPE_BOOLEAN,
- boolean_value_parse,
- boolean_value_print);
- register_conversion_function (G_TYPE_INT,
- int_value_parse,
- int_value_print);
- register_conversion_function (G_TYPE_UINT,
- uint_value_parse,
- uint_value_print);
- register_conversion_function (G_TYPE_DOUBLE,
- double_value_parse,
- double_value_print);
- register_conversion_function (G_TYPE_FLOAT,
- float_value_parse,
- float_value_print);
- register_conversion_function (G_TYPE_STRING,
- string_value_parse,
- string_value_print);
- register_conversion_function (GTK_TYPE_BORDER,
- border_value_parse,
- border_value_print);
- register_conversion_function (CAIRO_GOBJECT_TYPE_PATTERN,
- pattern_value_parse,
- pattern_value_print);
- register_conversion_function (G_TYPE_ENUM,
- enum_value_parse,
- enum_value_print);
- register_conversion_function (G_TYPE_FLAGS,
- flags_value_parse,
- flags_value_print);
-}
-
-/**
- * _gtk_css_style_parse_value:
- * @value: the value to parse into. Must be a valid initialized #GValue
- * @parser: the parser to parse from
- *
- * This is the generic parsing function used for CSS values. If the
- * function fails to parse a value, it will emit an error on @parser,
- * return %FALSE and not touch @value.
- *
- * Returns: %TRUE if parsing succeeded.
- **/
-gboolean
-_gtk_css_style_funcs_parse_value (GValue *value,
- GtkCssParser *parser)
-{
- GtkStyleParseFunc func;
-
- g_return_val_if_fail (value != NULL, FALSE);
- g_return_val_if_fail (parser != NULL, FALSE);
-
- gtk_css_style_funcs_init ();
-
- func = g_hash_table_lookup (parse_funcs,
- GSIZE_TO_POINTER (G_VALUE_TYPE (value)));
- if (func == NULL)
- func = g_hash_table_lookup (parse_funcs,
- GSIZE_TO_POINTER (g_type_fundamental (G_VALUE_TYPE (value))));
-
- if (func == NULL)
- {
- _gtk_css_parser_error (parser,
- "Cannot convert to type '%s'",
- g_type_name (G_VALUE_TYPE (value)));
- return FALSE;
- }
-
- return (*func) (parser, value);
-}
-
-/**
- * _gtk_css_style_print_value:
- * @value: an initialized GValue returned from _gtk_css_style_parse()
- * @string: the string to print into
- *
- * Prints @value into @string as a CSS value. If @value is not a
- * valid value, a random string will be printed instead.
- **/
-void
-_gtk_css_style_funcs_print_value (const GValue *value,
- GString *string)
-{
- GtkStylePrintFunc func;
-
- gtk_css_style_funcs_init ();
-
- func = g_hash_table_lookup (print_funcs,
- GSIZE_TO_POINTER (G_VALUE_TYPE (value)));
- if (func == NULL)
- func = g_hash_table_lookup (print_funcs,
- GSIZE_TO_POINTER (g_type_fundamental (G_VALUE_TYPE (value))));
-
- if (func == NULL)
- {
- char *s = g_strdup_value_contents (value);
- g_string_append (string, s);
- g_free (s);
- return;
- }
-
- func (value, string);
-}
-
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