git.maemo.org Git - simple-launcher/blob - applet-wrapper.cc

   1 // This file is a part of Simple Launcher
   2 //
   3 // Copyright (C) 2006, 2007, Mikhail Sobolev
   4 //
   5 // Simple Launcher is free software; you can redistribute it and/or modify it
   6 // under the terms of the GNU General Public License version 2 as published by
   7 // the Free Software Foundation.
   8 //
   9 // This program is distributed in the hope that it will be useful, but WITHOUT
  10 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 // more details.
  13 //
  14 // You should have received a copy of the GNU General Public License along with
  15 // this program; if not, write to the Free Software Foundation, Inc., 51
  16 // Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17
  18 #include <cairo/cairo.h>
  19
  20 #include <libhildondesktop/libhildondesktop.h>
  21 #include "applet-wrapper.h"
  22
  23 #include "simple-launcher.h"
  24
  25 struct _SLAWrapperPrivate {
  26   void *applet;
  27   GdkPixmap *background_pixmap;
  28 };
  29
  30   static void sla_wrapper_init(SLAWrapper *self);
  31   static void sla_wrapper_class_init(SLAWrapperClass *klass);
  32   static void sla_wrapper_finalize(GObject *object);
  33   static gboolean sla_wrapper_expose(GtkWidget *widget, GdkEventExpose *event);
  34   static void sla_wrapper_size_allocate(GtkWidget *widget, GtkAllocation *alloc);
  35   static void sla_wrapper_size_request(GtkWidget *widget, GtkRequisition *requisition);
  36
  37 HD_DEFINE_PLUGIN(SLAWrapper, sla_wrapper, HILDON_DESKTOP_TYPE_HOME_ITEM)
  38
  39 static void sla_wrapper_init(SLAWrapper *self) {
  40   GdkColormap *colormap = NULL;
  41
  42   self->priv = G_TYPE_INSTANCE_GET_PRIVATE(self, SLA_TYPE_WRAPPER);
  43   self->priv->background_pixmap = NULL;
  44
  45   if ((colormap = gdk_screen_get_rgba_colormap(gdk_screen_get_default())) != NULL) {
  46     gtk_widget_set_colormap(GTK_WIDGET(self), colormap);
  47   }
  48 }
  49
  50 static void sla_wrapper_class_init(SLAWrapperClass *klass) {
  51   GtkWidgetClass *widget_class;
  52   GObjectClass *object_class;
  53
  54   widget_class = GTK_WIDGET_CLASS(klass);
  55   object_class = G_OBJECT_CLASS(klass);
  56
  57   object_class->finalize = sla_wrapper_finalize;
  58
  59   widget_class->expose_event = sla_wrapper_expose;
  60   widget_class->size_allocate = sla_wrapper_size_allocate;
  61   widget_class->size_request = sla_wrapper_size_request;
  62
  63   g_type_class_add_private(klass, sizeof(SLAWrapperPrivate));   // Do I need this?
  64 }
  65
  66 static void sla_wrapper_finalize(GObject *self) {
  67   SLAWrapperPrivate *priv = SLA_WRAPPER(self)->priv;
  68
  69   if (priv->background_pixmap != NULL) {
  70     g_object_unref(priv->background_pixmap);
  71     priv->background_pixmap = NULL;
  72   }
  73 #if 0
  74   free(priv->applet);
  75 #endif
  76 }
  77
  78 static gboolean sla_wrapper_expose(GtkWidget *widget, GdkEventExpose *event) {
  79   if (GTK_WIDGET_DRAWABLE(widget)) {
  80     cairo_t *cr;
  81
  82     SLAWrapperPrivate *priv = SLA_WRAPPER(widget)->priv;
  83
  84     if (priv->background_pixmap == NULL) {
  85       priv->background_pixmap = gdk_pixmap_new(widget->window, SOME_WIDTH, SOME_HEIGHT, 32);
  86
  87       cr = gdk_cairo_create(priv->background_pixmap);
  88
  89       cairo_set_source_rgba(cr, OUR_R, OUR_G, OUR_B, OUR_A);
  90       cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
  91       cairo_paint(cr);
  92       cairo_destroy(cr);
  93     }
  94
  95     cr = gdk_cairo_create(widget->window);
  96     gdk_cairo_set_source_pixmap(cr, priv->background_pixmap, 0, 0);
  97
  98     cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
  99     cairo_paint(cr);
 100     cairo_destroy(cr);
 101
 102     return GTK_WIDGET_CLASS(sla_wrapper_parent_class)->expose_event(widget, event);
 103   } else {
 104     return FALSE;
 105   }
 106 }
 107
 108 static void sla_wrapper_size_allocate(GtkWidget *widget, GtkAllocation *alloc) {
 109   GTK_WIDGET_CLASS(sla_wrapper_parent_class)->size_allocate(widget, alloc);
 110 }
 111
 112 static void sla_wrapper_size_request(GtkWidget *widget, GtkRequisition *requisition) {
 113 #if 0
 114   requisition->width = our_desired_width;
 115   requisition->height = our_desired_height;
 116 #endif
 117 }
 118
 119 // vim:ts=2:sw=2:et