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GtkThemingEngine: Add vmethod to render arrows.

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This commit is contained in:
Carlos Garnacho 2010-03-27 18:50:39 +01:00
parent 1c15b140a9
commit b7ca7d19ee
2 changed files with 76 additions and 0 deletions
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70
gtk/gtkthemingengine.c
View File

@ -48,6 +48,12 @@ static void gtk_theming_engine_render_option (GtkThemingEngine *engine,
gdouble y, gdouble y,
gdouble width, gdouble width,
gdouble height); gdouble height);
static void gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
cairo_t *cr,
gdouble angle,
gdouble x,
gdouble y,
gdouble size);
G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT) G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT)
@ -81,6 +87,7 @@ gtk_theming_engine_class_init (GtkThemingEngineClass *klass)
klass->render_check = gtk_theming_engine_render_check; klass->render_check = gtk_theming_engine_render_check;
klass->render_option = gtk_theming_engine_render_option; klass->render_option = gtk_theming_engine_render_option;
klass->render_arrow = gtk_theming_engine_render_arrow;
g_type_class_add_private (object_class, sizeof (GtkThemingEnginePrivate)); g_type_class_add_private (object_class, sizeof (GtkThemingEnginePrivate));
} }
@ -461,5 +468,68 @@ gtk_theming_engine_render_option (GtkThemingEngine *engine,
cairo_restore (cr); cairo_restore (cr);
} }
static void
add_path_arrow (cairo_t *cr,
gdouble angle,
gdouble x,
gdouble y,
gdouble size)
{
cairo_save (cr);
cairo_translate (cr, x + (size / 2), y + (size / 2));
cairo_rotate (cr, angle);
cairo_move_to (cr, 0, - (size / 4) + 0.5);
cairo_line_to (cr, - (size / 2), (size / 4) + 0.5);
cairo_line_to (cr, (size / 2), (size / 4) + 0.5);
cairo_close_path (cr);
cairo_restore (cr);
}
static void
gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
cairo_t *cr,
gdouble angle,
gdouble x,
gdouble y,
gdouble size)
{
GtkStateFlags flags;
GtkStateType state;
GdkColor *fg_color;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
gtk_theming_engine_get (engine, state,
"foreground-color", &fg_color,
NULL);
if (flags & GTK_STATE_FLAG_INSENSITIVE)
{
add_path_arrow (cr, angle, x + 1, y + 1, size);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_fill (cr);
}
add_path_arrow (cr, angle, x, y, size);
gdk_cairo_set_source_color (cr, fg_color);
cairo_fill (cr);
cairo_restore (cr);
gdk_color_free (fg_color);
}
#define __GTK_THEMING_ENGINE_C__ #define __GTK_THEMING_ENGINE_C__
#include "gtkaliasdef.c" #include "gtkaliasdef.c"

6
gtk/gtkthemingengine.h
View File

@ -61,6 +61,12 @@ struct GtkThemingEngineClass
gdouble y, gdouble y,
gdouble width, gdouble width,
gdouble height); gdouble height);
void (* render_arrow) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble angle,
gdouble x,
gdouble y,
gdouble size);
}; };
GType gtk_theming_engine_get_type (void) G_GNUC_CONST; GType gtk_theming_engine_get_type (void) G_GNUC_CONST;