Draw key with icon if EekSymbol has "icon-name" property.

2011-03-01 10:28:06 +09:00
parent 0087f74178
commit 18f8e5b98b
9 changed files with 342 additions and 47 deletions
--- a/eek/eek-gtk-renderer.c
+++ b/eek/eek-gtk-renderer.c
@ -0,0 +1,127 @@
+/* 
+ * Copyright (C) 2011 Daiki Ueno <ueno@unixuser.org>
+ * Copyright (C) 2011 Red Hat, Inc.
+ * 
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif  /* HAVE_CONFIG_H */
+
+#include <string.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include "eek-gtk-renderer.h"
+#include "eek-key.h"
+
+G_DEFINE_TYPE (EekGtkRenderer, eek_gtk_renderer, EEK_TYPE_RENDERER);
+
+static cairo_surface_t *
+pixbuf_to_cairo_surface (GdkPixbuf *pixbuf)
+{
+  cairo_surface_t *dummy_surface;
+  cairo_pattern_t *pattern;
+  cairo_surface_t *surface;
+  cairo_t *cr;
+
+  dummy_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
+
+  cr = cairo_create (dummy_surface);
+  gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
+  pattern = cairo_get_source (cr);
+  cairo_pattern_get_surface (pattern, &surface);
+  cairo_surface_reference (surface);
+  cairo_destroy (cr);
+  cairo_surface_destroy (dummy_surface);
+
+  return surface;
+}
+
+static void
+eek_gtk_renderer_real_render_key_icon (EekRenderer *self,
+                                       cairo_t     *cr,
+                                       EekKey      *key,
+                                       gdouble      scale,
+                                       gboolean     rotate)
+{
+    EekBounds bounds;
+    EekSymbol *symbol;
+    const gchar *icon_name;
+    GdkPixbuf *pixbuf;
+    cairo_surface_t *surface;
+    GError *error;
+    gint width, height;
+
+    symbol = eek_key_get_symbol_with_fallback (key, 0, 0);
+    g_return_if_fail (symbol);
+
+    icon_name = eek_symbol_get_icon_name (symbol);
+    g_return_if_fail (icon_name);
+
+    eek_element_get_bounds (EEK_ELEMENT(key), &bounds);
+
+    error = NULL;
+    pixbuf = gtk_icon_theme_load_icon (gtk_icon_theme_get_default (),
+                                       icon_name,
+                                       MIN(bounds.width, bounds.height) * scale,
+                                       0,
+                                       &error);
+    g_return_if_fail (pixbuf);
+
+    width = gdk_pixbuf_get_width (pixbuf);
+    height = gdk_pixbuf_get_height (pixbuf);
+
+    if (bounds.width * scale * height > bounds.height * scale * width)
+        scale *= bounds.width * scale / width;
+    else
+        scale *= bounds.height * scale / height;
+
+    cairo_save (cr);
+    eek_renderer_apply_transformation_for_key (self, cr, key, scale, rotate);
+    surface = pixbuf_to_cairo_surface (pixbuf);
+    cairo_set_source_surface (cr, surface, 0.0, 0.0);
+    cairo_paint (cr);
+    cairo_restore (cr);
+}
+
+static void
+eek_gtk_renderer_class_init (EekGtkRendererClass *klass)
+{
+    EekRendererClass *renderer_class = EEK_RENDERER_CLASS (klass);
+
+    renderer_class->render_key_icon = eek_gtk_renderer_real_render_key_icon;
+}
+
+static void
+eek_gtk_renderer_init (EekGtkRenderer *self)
+{
+}
+
+EekRenderer *
+eek_gtk_renderer_new (EekKeyboard  *keyboard,
+                      PangoContext *pcontext,
+                      GtkWidget    *widget)
+{
+    EekRenderer *renderer;
+
+    renderer = g_object_new (EEK_TYPE_GTK_RENDERER,
+                             "keyboard", keyboard,
+                             "pango-context", pcontext,
+                             NULL);
+
+    return renderer;
+}