+2008-10-02 Michael Natterer <mitch@imendio.com>
+
+ Bug 553585 – Add orientation API to GtkRuler
+
+ * gtk/gtkruler.[ch]: implement the GtkOrientable interface and
+ swallow all code from GtkHRuler and GtkVRuler. Add gtk_ruler_new()
+ which takes a GtkOrientation argument.
+
+ * gtk/gtkhruler.c
+ * gtk/gtkvruler.c: remove all code except the constructor and
+ call gtk_orientable_set_orientation() in init().
+
+ * gtk/gtk.symbols: add gtk_ruler_new().
+
2008-10-01 Torsten Schoenfeld <kaffeetisch@gmx.de>
* docs/reference/gtk/gtk-sections.txt:
gtk_ruler_draw_ticks
gtk_ruler_get_metric
gtk_ruler_get_range
+gtk_ruler_new
gtk_ruler_get_type G_GNUC_CONST
gtk_ruler_set_metric
gtk_ruler_set_range
* 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/.
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
-#include <math.h>
-#include <glib/gprintf.h>
-#include <string.h>
+
#include "gtkhruler.h"
-#include "gtkintl.h"
+#include "gtkorientable.h"
#include "gtkalias.h"
-
-#define RULER_HEIGHT 14
-#define MINIMUM_INCR 5
-#define MAXIMUM_SUBDIVIDE 5
-#define MAXIMUM_SCALES 10
-
-#define ROUND(x) ((int) ((x) + 0.5))
-
-
-static gint gtk_hruler_motion_notify (GtkWidget *widget,
- GdkEventMotion *event);
-static void gtk_hruler_draw_ticks (GtkRuler *ruler);
-static void gtk_hruler_draw_pos (GtkRuler *ruler);
-
G_DEFINE_TYPE (GtkHRuler, gtk_hruler, GTK_TYPE_RULER)
static void
gtk_hruler_class_init (GtkHRulerClass *klass)
{
- GtkWidgetClass *widget_class;
- GtkRulerClass *ruler_class;
-
- widget_class = (GtkWidgetClass*) klass;
- ruler_class = (GtkRulerClass*) klass;
-
- widget_class->motion_notify_event = gtk_hruler_motion_notify;
-
- ruler_class->draw_ticks = gtk_hruler_draw_ticks;
- ruler_class->draw_pos = gtk_hruler_draw_pos;
}
static void
gtk_hruler_init (GtkHRuler *hruler)
{
- GtkWidget *widget;
-
- widget = GTK_WIDGET (hruler);
- widget->requisition.width = widget->style->xthickness * 2 + 1;
- widget->requisition.height = widget->style->ythickness * 2 + RULER_HEIGHT;
+ gtk_orientable_set_orientation (GTK_ORIENTABLE (hruler),
+ GTK_ORIENTATION_HORIZONTAL);
}
-
-GtkWidget*
+GtkWidget *
gtk_hruler_new (void)
{
return g_object_new (GTK_TYPE_HRULER, NULL);
}
-static gint
-gtk_hruler_motion_notify (GtkWidget *widget,
- GdkEventMotion *event)
-{
- GtkRuler *ruler;
- gint x;
-
- ruler = GTK_RULER (widget);
-
- gdk_event_request_motions (event);
- x = event->x;
-
- ruler->position = ruler->lower + ((ruler->upper - ruler->lower) * x) / widget->allocation.width;
- g_object_notify (G_OBJECT (ruler), "position");
-
- /* Make sure the ruler has been allocated already */
- if (ruler->backing_store != NULL)
- gtk_ruler_draw_pos (ruler);
-
- return FALSE;
-}
-
-static void
-gtk_hruler_draw_ticks (GtkRuler *ruler)
-{
- GtkWidget *widget;
- cairo_t *cr;
- gint i;
- gint width, height;
- gint xthickness;
- gint ythickness;
- gint length, ideal_length;
- gdouble lower, upper; /* Upper and lower limits, in ruler units */
- gdouble increment; /* Number of pixels per unit */
- gint scale; /* Number of units per major unit */
- gdouble subd_incr;
- gdouble start, end, cur;
- gchar unit_str[32];
- gint digit_height;
- gint digit_offset;
- gint text_width;
- gint pos;
- PangoLayout *layout;
- PangoRectangle logical_rect, ink_rect;
-
- if (!GTK_WIDGET_DRAWABLE (ruler))
- return;
-
- widget = GTK_WIDGET (ruler);
-
- xthickness = widget->style->xthickness;
- ythickness = widget->style->ythickness;
-
- layout = gtk_widget_create_pango_layout (widget, "012456789");
- pango_layout_get_extents (layout, &ink_rect, &logical_rect);
-
- digit_height = PANGO_PIXELS (ink_rect.height) + 2;
- digit_offset = ink_rect.y;
-
- width = widget->allocation.width;
- height = widget->allocation.height - ythickness * 2;
-
- gtk_paint_box (widget->style, ruler->backing_store,
- GTK_STATE_NORMAL, GTK_SHADOW_OUT,
- NULL, widget, "hruler",
- 0, 0,
- widget->allocation.width, widget->allocation.height);
-
- cr = gdk_cairo_create (ruler->backing_store);
- gdk_cairo_set_source_color (cr, &widget->style->fg[widget->state]);
-
- cairo_rectangle (cr,
- xthickness,
- height + ythickness,
- widget->allocation.width - 2 * xthickness,
- 1);
-
- upper = ruler->upper / ruler->metric->pixels_per_unit;
- lower = ruler->lower / ruler->metric->pixels_per_unit;
-
- if ((upper - lower) == 0)
- goto out;
-
- increment = (gdouble) width / (upper - lower);
-
- /* determine the scale
- * We calculate the text size as for the vruler instead of using
- * text_width = gdk_string_width(font, unit_str), so that the result
- * for the scale looks consistent with an accompanying vruler
- */
- scale = ceil (ruler->max_size / ruler->metric->pixels_per_unit);
- g_snprintf (unit_str, sizeof (unit_str), "%d", scale);
- text_width = strlen (unit_str) * digit_height + 1;
-
- for (scale = 0; scale < MAXIMUM_SCALES; scale++)
- if (ruler->metric->ruler_scale[scale] * fabs(increment) > 2 * text_width)
- break;
-
- if (scale == MAXIMUM_SCALES)
- scale = MAXIMUM_SCALES - 1;
-
- /* drawing starts here */
- length = 0;
- for (i = MAXIMUM_SUBDIVIDE - 1; i >= 0; i--)
- {
- subd_incr = (gdouble) ruler->metric->ruler_scale[scale] /
- (gdouble) ruler->metric->subdivide[i];
- if (subd_incr * fabs(increment) <= MINIMUM_INCR)
- continue;
-
- /* Calculate the length of the tickmarks. Make sure that
- * this length increases for each set of ticks
- */
- ideal_length = height / (i + 1) - 1;
- if (ideal_length > ++length)
- length = ideal_length;
-
- if (lower < upper)
- {
- start = floor (lower / subd_incr) * subd_incr;
- end = ceil (upper / subd_incr) * subd_incr;
- }
- else
- {
- start = floor (upper / subd_incr) * subd_incr;
- end = ceil (lower / subd_incr) * subd_incr;
- }
-
-
- for (cur = start; cur <= end; cur += subd_incr)
- {
- pos = ROUND ((cur - lower) * increment);
-
- cairo_rectangle (cr,
- pos, height + ythickness - length,
- 1, length);
-
- /* draw label */
- if (i == 0)
- {
- g_snprintf (unit_str, sizeof (unit_str), "%d", (int) cur);
-
- pango_layout_set_text (layout, unit_str, -1);
- pango_layout_get_extents (layout, &logical_rect, NULL);
-
- gtk_paint_layout (widget->style,
- ruler->backing_store,
- GTK_WIDGET_STATE (widget),
- FALSE,
- NULL,
- widget,
- "hruler",
- pos + 2, ythickness + PANGO_PIXELS (logical_rect.y - digit_offset),
- layout);
- }
- }
- }
-
- cairo_fill (cr);
-out:
- cairo_destroy (cr);
-
- g_object_unref (layout);
-}
-
-static void
-gtk_hruler_draw_pos (GtkRuler *ruler)
-{
- GtkWidget *widget = GTK_WIDGET (ruler);
- gint x, y;
- gint width, height;
- gint bs_width, bs_height;
- gint xthickness;
- gint ythickness;
- gdouble increment;
-
- if (GTK_WIDGET_DRAWABLE (ruler))
- {
- xthickness = widget->style->xthickness;
- ythickness = widget->style->ythickness;
- width = widget->allocation.width;
- height = widget->allocation.height - ythickness * 2;
-
- bs_width = height / 2 + 2;
- bs_width |= 1; /* make sure it's odd */
- bs_height = bs_width / 2 + 1;
-
- if ((bs_width > 0) && (bs_height > 0))
- {
- cairo_t *cr = gdk_cairo_create (widget->window);
-
- /* If a backing store exists, restore the ruler */
- if (ruler->backing_store)
- gdk_draw_drawable (widget->window,
- widget->style->black_gc,
- ruler->backing_store,
- ruler->xsrc, ruler->ysrc,
- ruler->xsrc, ruler->ysrc,
- bs_width, bs_height);
-
- increment = (gdouble) width / (ruler->upper - ruler->lower);
-
- x = ROUND ((ruler->position - ruler->lower) * increment) + (xthickness - bs_width) / 2 - 1;
- y = (height + bs_height) / 2 + ythickness;
-
- gdk_cairo_set_source_color (cr, &widget->style->fg[widget->state]);
-
- cairo_move_to (cr, x, y);
- cairo_line_to (cr, x + bs_width / 2., y + bs_height);
- cairo_line_to (cr, x + bs_width, y);
- cairo_fill (cr);
-
- cairo_destroy (cr);
-
- ruler->xsrc = x;
- ruler->ysrc = y;
- }
- }
-}
-
#define __GTK_HRULER_C__
#include "gtkaliasdef.c"
* 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/.
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
+
+#include <math.h>
+#include <string.h>
+
+#include "gtkorientable.h"
#include "gtkruler.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkalias.h"
+
+#define RULER_WIDTH 14
+#define MINIMUM_INCR 5
+#define MAXIMUM_SUBDIVIDE 5
+#define MAXIMUM_SCALES 10
+
+#define ROUND(x) ((int) ((x) + 0.5))
+
enum {
PROP_0,
+ PROP_ORIENTATION,
PROP_LOWER,
PROP_UPPER,
PROP_POSITION,
PROP_METRIC
};
-static void gtk_ruler_realize (GtkWidget *widget);
-static void gtk_ruler_unrealize (GtkWidget *widget);
-static void gtk_ruler_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
-static gint gtk_ruler_expose (GtkWidget *widget,
- GdkEventExpose *event);
-static void gtk_ruler_make_pixmap (GtkRuler *ruler);
-static void gtk_ruler_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec);
-static void gtk_ruler_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec);
+typedef struct _GtkRulerPrivate GtkRulerPrivate;
+
+struct _GtkRulerPrivate
+{
+ GtkOrientation orientation;
+};
+
+#define GTK_RULER_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_RULER, GtkRulerPrivate))
+
+
+static void gtk_ruler_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gtk_ruler_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gtk_ruler_realize (GtkWidget *widget);
+static void gtk_ruler_unrealize (GtkWidget *widget);
+static void gtk_ruler_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
+static void gtk_ruler_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static gboolean gtk_ruler_motion_notify (GtkWidget *widget,
+ GdkEventMotion *event);
+static gboolean gtk_ruler_expose (GtkWidget *widget,
+ GdkEventExpose *event);
+static void gtk_ruler_make_pixmap (GtkRuler *ruler);
+static void gtk_ruler_real_draw_ticks (GtkRuler *ruler);
+static void gtk_ruler_real_draw_pos (GtkRuler *ruler);
+
static const GtkRulerMetric ruler_metrics[] =
{
{ "Centimeters", "Cn", 28.35, { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000 }, { 1, 5, 10, 50, 100 }},
};
-G_DEFINE_TYPE (GtkRuler, gtk_ruler, GTK_TYPE_WIDGET)
+
+G_DEFINE_TYPE_WITH_CODE (GtkRuler, gtk_ruler, GTK_TYPE_WIDGET,
+ G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
+ NULL))
+
static void
gtk_ruler_class_init (GtkRulerClass *class)
{
- GObjectClass *gobject_class;
- GtkWidgetClass *widget_class;
-
- gobject_class = G_OBJECT_CLASS (class);
- widget_class = (GtkWidgetClass*) class;
+ GObjectClass *gobject_class = G_OBJECT_CLASS (class);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
gobject_class->set_property = gtk_ruler_set_property;
gobject_class->get_property = gtk_ruler_get_property;
widget_class->realize = gtk_ruler_realize;
widget_class->unrealize = gtk_ruler_unrealize;
+ widget_class->size_request = gtk_ruler_size_request;
widget_class->size_allocate = gtk_ruler_size_allocate;
+ widget_class->motion_notify_event = gtk_ruler_motion_notify;
widget_class->expose_event = gtk_ruler_expose;
- class->draw_ticks = NULL;
- class->draw_pos = NULL;
+ class->draw_ticks = gtk_ruler_real_draw_ticks;
+ class->draw_pos = gtk_ruler_real_draw_pos;
+
+ g_object_class_override_property (gobject_class,
+ PROP_ORIENTATION,
+ "orientation");
g_object_class_install_property (gobject_class,
PROP_LOWER,
GTK_TYPE_METRIC_TYPE,
GTK_PIXELS,
GTK_PARAM_READWRITE));
+
+ g_type_class_add_private (gobject_class, sizeof (GtkRulerPrivate));
}
static void
gtk_ruler_init (GtkRuler *ruler)
{
+ GtkWidget *widget = GTK_WIDGET (ruler);
+ GtkRulerPrivate *private = GTK_RULER_GET_PRIVATE (ruler);
+
+ private->orientation = GTK_ORIENTATION_HORIZONTAL;
+
+ widget->requisition.width = widget->style->xthickness * 2 + 1;
+ widget->requisition.height = widget->style->ythickness * 2 + RULER_WIDTH;
+
ruler->backing_store = NULL;
ruler->xsrc = 0;
ruler->ysrc = 0;
GParamSpec *pspec)
{
GtkRuler *ruler = GTK_RULER (object);
+ GtkRulerPrivate *private = GTK_RULER_GET_PRIVATE (ruler);
switch (prop_id)
{
+ case PROP_ORIENTATION:
+ private->orientation = g_value_get_enum (value);
+ gtk_widget_queue_resize (GTK_WIDGET (ruler));
+ break;
case PROP_LOWER:
gtk_ruler_set_range (ruler, g_value_get_double (value), ruler->upper,
ruler->position, ruler->max_size);
GParamSpec *pspec)
{
GtkRuler *ruler = GTK_RULER (object);
-
+ GtkRulerPrivate *private = GTK_RULER_GET_PRIVATE (ruler);
+
switch (prop_id)
{
+ case PROP_ORIENTATION:
+ g_value_set_enum (value, private->orientation);
+ break;
case PROP_LOWER:
g_value_set_double (value, ruler->lower);
break;
}
}
+/**
+ * gtk_ruler_new:
+ * @orientation: the ruler's orientation.
+ *
+ * Creates a new #GtkRuler with the given orientation.
+ *
+ * Return value: a new #GtkRuler.
+ *
+ * Since: 2.16
+ **/
+GtkWidget *
+gtk_ruler_new (GtkOrientation orientation)
+{
+ return g_object_new (GTK_TYPE_RULER,
+ "orientation", orientation,
+ NULL);
+}
+
void
gtk_ruler_set_metric (GtkRuler *ruler,
GtkMetricType metric)
GTK_WIDGET_CLASS (gtk_ruler_parent_class)->unrealize (widget);
}
+static void
+gtk_ruler_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ GtkRulerPrivate *private = GTK_RULER_GET_PRIVATE (widget);
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ requisition->width = widget->style->xthickness * 2 + 1;
+ requisition->height = widget->style->ythickness * 2 + RULER_WIDTH;
+ }
+ else
+ {
+ requisition->width = widget->style->xthickness * 2 + RULER_WIDTH;
+ requisition->height = widget->style->ythickness * 2 + 1;
+ }
+}
+
static void
gtk_ruler_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
}
}
-static gint
+static gboolean
+gtk_ruler_motion_notify (GtkWidget *widget,
+ GdkEventMotion *event)
+{
+ GtkRuler *ruler = GTK_RULER (widget);
+ GtkRulerPrivate *private = GTK_RULER_GET_PRIVATE (widget);
+ gint x;
+ gint y;
+
+ gdk_event_request_motions (event);
+ x = event->x;
+ y = event->y;
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ ruler->position = ruler->lower + ((ruler->upper - ruler->lower) * x) / widget->allocation.width;
+ else
+ ruler->position = ruler->lower + ((ruler->upper - ruler->lower) * y) / widget->allocation.height;
+
+ g_object_notify (G_OBJECT (ruler), "position");
+
+ /* Make sure the ruler has been allocated already */
+ if (ruler->backing_store != NULL)
+ gtk_ruler_draw_pos (ruler);
+
+ return FALSE;
+}
+
+static gboolean
gtk_ruler_expose (GtkWidget *widget,
GdkEventExpose *event)
{
- GtkRuler *ruler;
-
if (GTK_WIDGET_DRAWABLE (widget))
{
- ruler = GTK_RULER (widget);
+ GtkRuler *ruler = GTK_RULER (widget);
gtk_ruler_draw_ticks (ruler);
}
}
+static void
+gtk_ruler_real_draw_ticks (GtkRuler *ruler)
+{
+ GtkWidget *widget = GTK_WIDGET (ruler);
+ GtkRulerPrivate *private = GTK_RULER_GET_PRIVATE (ruler);
+ cairo_t *cr;
+ gint i, j;
+ gint width, height;
+ gint xthickness;
+ gint ythickness;
+ gint length, ideal_length;
+ gdouble lower, upper; /* Upper and lower limits, in ruler units */
+ gdouble increment; /* Number of pixels per unit */
+ gint scale; /* Number of units per major unit */
+ gdouble subd_incr;
+ gdouble start, end, cur;
+ gchar unit_str[32];
+ gint digit_height;
+ gint digit_offset;
+ gint text_width;
+ gint text_height;
+ gint pos;
+ PangoLayout *layout;
+ PangoRectangle logical_rect, ink_rect;
+
+ if (!GTK_WIDGET_DRAWABLE (ruler))
+ return;
+
+ xthickness = widget->style->xthickness;
+ ythickness = widget->style->ythickness;
+
+ layout = gtk_widget_create_pango_layout (widget, "012456789");
+ pango_layout_get_extents (layout, &ink_rect, &logical_rect);
+
+ digit_height = PANGO_PIXELS (ink_rect.height) + 2;
+ digit_offset = ink_rect.y;
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ width = widget->allocation.width;
+ height = widget->allocation.height - ythickness * 2;
+ }
+ else
+ {
+ width = widget->allocation.height;
+ height = widget->allocation.width - ythickness * 2;
+ }
+
+#define DETAILE(private) (private->orientation == GTK_ORIENTATION_HORIZONTAL ? "hruler" : "vruler");
+
+ gtk_paint_box (widget->style, ruler->backing_store,
+ GTK_STATE_NORMAL, GTK_SHADOW_OUT,
+ NULL, widget,
+ private->orientation == GTK_ORIENTATION_HORIZONTAL ?
+ "hruler" : "vruler",
+ 0, 0,
+ widget->allocation.width, widget->allocation.height);
+
+ cr = gdk_cairo_create (ruler->backing_store);
+ gdk_cairo_set_source_color (cr, &widget->style->fg[widget->state]);
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ cairo_rectangle (cr,
+ xthickness,
+ height + ythickness,
+ widget->allocation.width - 2 * xthickness,
+ 1);
+ }
+ else
+ {
+ cairo_rectangle (cr,
+ height + xthickness,
+ ythickness,
+ 1,
+ widget->allocation.height - 2 * ythickness);
+ }
+
+ upper = ruler->upper / ruler->metric->pixels_per_unit;
+ lower = ruler->lower / ruler->metric->pixels_per_unit;
+
+ if ((upper - lower) == 0)
+ goto out;
+
+ increment = (gdouble) width / (upper - lower);
+
+ /* determine the scale H
+ * We calculate the text size as for the vruler instead of using
+ * text_width = gdk_string_width(font, unit_str), so that the result
+ * for the scale looks consistent with an accompanying vruler
+ */
+ /* determine the scale V
+ * use the maximum extents of the ruler to determine the largest
+ * possible number to be displayed. Calculate the height in pixels
+ * of this displayed text. Use this height to find a scale which
+ * leaves sufficient room for drawing the ruler.
+ */
+ scale = ceil (ruler->max_size / ruler->metric->pixels_per_unit);
+ g_snprintf (unit_str, sizeof (unit_str), "%d", scale);
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ text_width = strlen (unit_str) * digit_height + 1;
+
+ for (scale = 0; scale < MAXIMUM_SCALES; scale++)
+ if (ruler->metric->ruler_scale[scale] * fabs(increment) > 2 * text_width)
+ break;
+ }
+ else
+ {
+ text_height = strlen (unit_str) * digit_height + 1;
+
+ for (scale = 0; scale < MAXIMUM_SCALES; scale++)
+ if (ruler->metric->ruler_scale[scale] * fabs(increment) > 2 * text_height)
+ break;
+ }
+
+ if (scale == MAXIMUM_SCALES)
+ scale = MAXIMUM_SCALES - 1;
+
+ /* drawing starts here */
+ length = 0;
+ for (i = MAXIMUM_SUBDIVIDE - 1; i >= 0; i--)
+ {
+ subd_incr = (gdouble) ruler->metric->ruler_scale[scale] /
+ (gdouble) ruler->metric->subdivide[i];
+ if (subd_incr * fabs(increment) <= MINIMUM_INCR)
+ continue;
+
+ /* Calculate the length of the tickmarks. Make sure that
+ * this length increases for each set of ticks
+ */
+ ideal_length = height / (i + 1) - 1;
+ if (ideal_length > ++length)
+ length = ideal_length;
+
+ if (lower < upper)
+ {
+ start = floor (lower / subd_incr) * subd_incr;
+ end = ceil (upper / subd_incr) * subd_incr;
+ }
+ else
+ {
+ start = floor (upper / subd_incr) * subd_incr;
+ end = ceil (lower / subd_incr) * subd_incr;
+ }
+
+ for (cur = start; cur <= end; cur += subd_incr)
+ {
+ pos = ROUND ((cur - lower) * increment);
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ cairo_rectangle (cr,
+ pos, height + ythickness - length,
+ 1, length);
+ }
+ else
+ {
+ cairo_rectangle (cr,
+ height + xthickness - length, pos,
+ length, 1);
+ }
+
+ /* draw label */
+ if (i == 0)
+ {
+ g_snprintf (unit_str, sizeof (unit_str), "%d", (int) cur);
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ pango_layout_set_text (layout, unit_str, -1);
+ pango_layout_get_extents (layout, &logical_rect, NULL);
+
+ gtk_paint_layout (widget->style,
+ ruler->backing_store,
+ GTK_WIDGET_STATE (widget),
+ FALSE,
+ NULL,
+ widget,
+ "hruler",
+ pos + 2, ythickness + PANGO_PIXELS (logical_rect.y - digit_offset),
+ layout);
+ }
+ else
+ {
+ for (j = 0; j < (int) strlen (unit_str); j++)
+ {
+ pango_layout_set_text (layout, unit_str + j, 1);
+ pango_layout_get_extents (layout, NULL, &logical_rect);
+
+ gtk_paint_layout (widget->style,
+ ruler->backing_store,
+ GTK_WIDGET_STATE (widget),
+ FALSE,
+ NULL,
+ widget,
+ "vruler",
+ xthickness + 1,
+ pos + digit_height * j + 2 + PANGO_PIXELS (logical_rect.y - digit_offset),
+ layout);
+ }
+ }
+ }
+ }
+ }
+
+ cairo_fill (cr);
+out:
+ cairo_destroy (cr);
+
+ g_object_unref (layout);
+}
+
+static void
+gtk_ruler_real_draw_pos (GtkRuler *ruler)
+{
+ GtkWidget *widget = GTK_WIDGET (ruler);
+ GtkRulerPrivate *private = GTK_RULER_GET_PRIVATE (ruler);
+ gint x, y;
+ gint width, height;
+ gint bs_width, bs_height;
+ gint xthickness;
+ gint ythickness;
+ gdouble increment;
+
+ if (GTK_WIDGET_DRAWABLE (ruler))
+ {
+ xthickness = widget->style->xthickness;
+ ythickness = widget->style->ythickness;
+ width = widget->allocation.width;
+ height = widget->allocation.height;
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ height -= ythickness * 2;
+
+ bs_width = height / 2 + 2;
+ bs_width |= 1; /* make sure it's odd */
+ bs_height = bs_width / 2 + 1;
+ }
+ else
+ {
+ width -= xthickness * 2;
+
+ bs_height = width / 2 + 2;
+ bs_height |= 1; /* make sure it's odd */
+ bs_width = bs_height / 2 + 1;
+ }
+
+ if ((bs_width > 0) && (bs_height > 0))
+ {
+ cairo_t *cr = gdk_cairo_create (widget->window);
+
+ /* If a backing store exists, restore the ruler */
+ if (ruler->backing_store)
+ gdk_draw_drawable (widget->window,
+ widget->style->black_gc,
+ ruler->backing_store,
+ ruler->xsrc, ruler->ysrc,
+ ruler->xsrc, ruler->ysrc,
+ bs_width, bs_height);
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ increment = (gdouble) width / (ruler->upper - ruler->lower);
+
+ x = ROUND ((ruler->position - ruler->lower) * increment) + (xthickness - bs_width) / 2 - 1;
+ y = (height + bs_height) / 2 + ythickness;
+ }
+ else
+ {
+ increment = (gdouble) height / (ruler->upper - ruler->lower);
+
+ x = (width + bs_width) / 2 + xthickness;
+ y = ROUND ((ruler->position - ruler->lower) * increment) + (ythickness - bs_height) / 2 - 1;
+ }
+
+ gdk_cairo_set_source_color (cr, &widget->style->fg[widget->state]);
+
+ cairo_move_to (cr, x, y);
+
+ if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ cairo_line_to (cr, x + bs_width / 2.0, y + bs_height);
+ cairo_line_to (cr, x + bs_width, y);
+ }
+ else
+ {
+ cairo_line_to (cr, x + bs_width, y + bs_height / 2.0);
+ cairo_line_to (cr, x, y + bs_height);
+ }
+
+ cairo_fill (cr);
+
+ cairo_destroy (cr);
+
+ ruler->xsrc = x;
+ ruler->ysrc = y;
+ }
+ }
+}
+
#define __GTK_RULER_C__
#include "gtkaliasdef.c"
};
-GType gtk_ruler_get_type (void) G_GNUC_CONST;
-void gtk_ruler_set_metric (GtkRuler *ruler,
- GtkMetricType metric);
-void gtk_ruler_set_range (GtkRuler *ruler,
- gdouble lower,
- gdouble upper,
- gdouble position,
- gdouble max_size);
-void gtk_ruler_draw_ticks (GtkRuler *ruler);
-void gtk_ruler_draw_pos (GtkRuler *ruler);
-
-GtkMetricType gtk_ruler_get_metric (GtkRuler *ruler);
-void gtk_ruler_get_range (GtkRuler *ruler,
- gdouble *lower,
- gdouble *upper,
- gdouble *position,
- gdouble *max_size);
+GType gtk_ruler_get_type (void) G_GNUC_CONST;
+GtkWidget * gtk_ruler_new (GtkOrientation orientation);
+
+void gtk_ruler_set_metric (GtkRuler *ruler,
+ GtkMetricType metric);
+GtkMetricType gtk_ruler_get_metric (GtkRuler *ruler);
+void gtk_ruler_set_range (GtkRuler *ruler,
+ gdouble lower,
+ gdouble upper,
+ gdouble position,
+ gdouble max_size);
+void gtk_ruler_get_range (GtkRuler *ruler,
+ gdouble *lower,
+ gdouble *upper,
+ gdouble *position,
+ gdouble *max_size);
+
+void gtk_ruler_draw_ticks (GtkRuler *ruler);
+void gtk_ruler_draw_pos (GtkRuler *ruler);
G_END_DECLS
* 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/.
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
-#include <math.h>
-#include <string.h>
+
+#include "gtkorientable.h"
#include "gtkvruler.h"
-#include "gtkintl.h"
#include "gtkalias.h"
-#include <glib/gprintf.h>
-
-
-#define RULER_WIDTH 14
-#define MINIMUM_INCR 5
-#define MAXIMUM_SUBDIVIDE 5
-#define MAXIMUM_SCALES 10
-
-#define ROUND(x) ((int) ((x) + 0.5))
-
-
-static gint gtk_vruler_motion_notify (GtkWidget *widget,
- GdkEventMotion *event);
-static void gtk_vruler_draw_ticks (GtkRuler *ruler);
-static void gtk_vruler_draw_pos (GtkRuler *ruler);
-
G_DEFINE_TYPE (GtkVRuler, gtk_vruler, GTK_TYPE_RULER)
static void
gtk_vruler_class_init (GtkVRulerClass *klass)
{
- GtkWidgetClass *widget_class;
- GtkRulerClass *ruler_class;
-
- widget_class = (GtkWidgetClass*) klass;
- ruler_class = (GtkRulerClass*) klass;
-
- widget_class->motion_notify_event = gtk_vruler_motion_notify;
-
- ruler_class->draw_ticks = gtk_vruler_draw_ticks;
- ruler_class->draw_pos = gtk_vruler_draw_pos;
}
static void
gtk_vruler_init (GtkVRuler *vruler)
{
- GtkWidget *widget;
-
- widget = GTK_WIDGET (vruler);
- widget->requisition.width = widget->style->xthickness * 2 + RULER_WIDTH;
- widget->requisition.height = widget->style->ythickness * 2 + 1;
+ gtk_orientable_set_orientation (GTK_ORIENTABLE (vruler),
+ GTK_ORIENTATION_VERTICAL);
}
-GtkWidget*
+GtkWidget *
gtk_vruler_new (void)
{
return g_object_new (GTK_TYPE_VRULER, NULL);
}
-
-static gint
-gtk_vruler_motion_notify (GtkWidget *widget,
- GdkEventMotion *event)
-{
- GtkRuler *ruler;
- gint y;
-
- ruler = GTK_RULER (widget);
-
- gdk_event_request_motions (event);
- y = event->y;
-
- ruler->position = ruler->lower + ((ruler->upper - ruler->lower) * y) / widget->allocation.height;
- g_object_notify (G_OBJECT (ruler), "position");
-
- /* Make sure the ruler has been allocated already */
- if (ruler->backing_store != NULL)
- gtk_ruler_draw_pos (ruler);
-
- return FALSE;
-}
-
-static void
-gtk_vruler_draw_ticks (GtkRuler *ruler)
-{
- GtkWidget *widget;
- cairo_t *cr;
- gint i, j;
- gint width, height;
- gint xthickness;
- gint ythickness;
- gint length, ideal_length;
- gdouble lower, upper; /* Upper and lower limits, in ruler units */
- gdouble increment; /* Number of pixels per unit */
- gint scale; /* Number of units per major unit */
- gdouble subd_incr;
- gdouble start, end, cur;
- gchar unit_str[32];
- gint digit_height;
- gint digit_offset;
- gint text_height;
- gint pos;
- PangoLayout *layout;
- PangoRectangle logical_rect, ink_rect;
-
- if (!GTK_WIDGET_DRAWABLE (ruler))
- return;
-
- widget = GTK_WIDGET (ruler);
-
- xthickness = widget->style->xthickness;
- ythickness = widget->style->ythickness;
-
- layout = gtk_widget_create_pango_layout (widget, "012456789");
- pango_layout_get_extents (layout, &ink_rect, &logical_rect);
-
- digit_height = PANGO_PIXELS (ink_rect.height) + 2;
- digit_offset = ink_rect.y;
-
- width = widget->allocation.height;
- height = widget->allocation.width - ythickness * 2;
-
- gtk_paint_box (widget->style, ruler->backing_store,
- GTK_STATE_NORMAL, GTK_SHADOW_OUT,
- NULL, widget, "vruler",
- 0, 0,
- widget->allocation.width, widget->allocation.height);
-
- cr = gdk_cairo_create (ruler->backing_store);
- gdk_cairo_set_source_color (cr, &widget->style->fg[widget->state]);
-
- cairo_rectangle (cr,
- height + xthickness,
- ythickness,
- 1,
- widget->allocation.height - 2 * ythickness);
-
- upper = ruler->upper / ruler->metric->pixels_per_unit;
- lower = ruler->lower / ruler->metric->pixels_per_unit;
-
- if ((upper - lower) == 0)
- goto out;
-
- increment = (gdouble) width / (upper - lower);
-
- /* determine the scale
- * use the maximum extents of the ruler to determine the largest
- * possible number to be displayed. Calculate the height in pixels
- * of this displayed text. Use this height to find a scale which
- * leaves sufficient room for drawing the ruler.
- */
- scale = ceil (ruler->max_size / ruler->metric->pixels_per_unit);
- g_snprintf (unit_str, sizeof (unit_str), "%d", scale);
- text_height = strlen (unit_str) * digit_height + 1;
-
- for (scale = 0; scale < MAXIMUM_SCALES; scale++)
- if (ruler->metric->ruler_scale[scale] * fabs(increment) > 2 * text_height)
- break;
-
- if (scale == MAXIMUM_SCALES)
- scale = MAXIMUM_SCALES - 1;
-
- /* drawing starts here */
- length = 0;
- for (i = MAXIMUM_SUBDIVIDE - 1; i >= 0; i--)
- {
- subd_incr = (gdouble) ruler->metric->ruler_scale[scale] /
- (gdouble) ruler->metric->subdivide[i];
- if (subd_incr * fabs(increment) <= MINIMUM_INCR)
- continue;
-
- /* Calculate the length of the tickmarks. Make sure that
- * this length increases for each set of ticks
- */
- ideal_length = height / (i + 1) - 1;
- if (ideal_length > ++length)
- length = ideal_length;
-
- if (lower < upper)
- {
- start = floor (lower / subd_incr) * subd_incr;
- end = ceil (upper / subd_incr) * subd_incr;
- }
- else
- {
- start = floor (upper / subd_incr) * subd_incr;
- end = ceil (lower / subd_incr) * subd_incr;
- }
-
- for (cur = start; cur <= end; cur += subd_incr)
- {
- pos = ROUND ((cur - lower) * increment);
-
- cairo_rectangle (cr,
- height + xthickness - length, pos,
- length, 1);
-
- /* draw label */
- if (i == 0)
- {
- g_snprintf (unit_str, sizeof (unit_str), "%d", (int) cur);
-
- for (j = 0; j < (int) strlen (unit_str); j++)
- {
- pango_layout_set_text (layout, unit_str + j, 1);
- pango_layout_get_extents (layout, NULL, &logical_rect);
-
-
- gtk_paint_layout (widget->style,
- ruler->backing_store,
- GTK_WIDGET_STATE (widget),
- FALSE,
- NULL,
- widget,
- "vruler",
- xthickness + 1,
- pos + digit_height * j + 2 + PANGO_PIXELS (logical_rect.y - digit_offset),
- layout);
- }
- }
- }
- }
-
- cairo_fill (cr);
-out:
- cairo_destroy (cr);
-
- g_object_unref (layout);
-}
-
-
-static void
-gtk_vruler_draw_pos (GtkRuler *ruler)
-{
- GtkWidget *widget = GTK_WIDGET (ruler);
- gint x, y;
- gint width, height;
- gint bs_width, bs_height;
- gint xthickness;
- gint ythickness;
- gdouble increment;
-
- if (GTK_WIDGET_DRAWABLE (ruler))
- {
- xthickness = widget->style->xthickness;
- ythickness = widget->style->ythickness;
- width = widget->allocation.width - xthickness * 2;
- height = widget->allocation.height;
-
- bs_height = width / 2 + 2;
- bs_height |= 1; /* make sure it's odd */
- bs_width = bs_height / 2 + 1;
-
- if ((bs_width > 0) && (bs_height > 0))
- {
- cairo_t *cr = gdk_cairo_create (widget->window);
-
- /* If a backing store exists, restore the ruler */
- if (ruler->backing_store)
- gdk_draw_drawable (widget->window,
- widget->style->black_gc,
- ruler->backing_store,
- ruler->xsrc, ruler->ysrc,
- ruler->xsrc, ruler->ysrc,
- bs_width, bs_height);
-
- increment = (gdouble) height / (ruler->upper - ruler->lower);
-
- x = (width + bs_width) / 2 + xthickness;
- y = ROUND ((ruler->position - ruler->lower) * increment) + (ythickness - bs_height) / 2 - 1;
-
- gdk_cairo_set_source_color (cr, &widget->style->fg[widget->state]);
-
- cairo_move_to (cr, x, y);
- cairo_line_to (cr, x + bs_width, y + bs_height / 2.);
- cairo_line_to (cr, x, y + bs_height);
- cairo_fill (cr);
-
- cairo_destroy (cr);
-
- ruler->xsrc = x;
- ruler->ysrc = y;
- }
- }
-}
-
#define __GTK_VRULER_C__
#include "gtkaliasdef.c"
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