vcs.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   SimpleLauncherApplet *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   static void sla_wrapper_make_background(GtkWidget *widget, SLAWrapperPrivate *priv);
  37
  38 HD_DEFINE_PLUGIN(SLAWrapper, sla_wrapper, HILDON_DESKTOP_TYPE_HOME_ITEM)
  39
  40 static void sla_wrapper_init(SLAWrapper *self) {
  41   GdkColormap *colormap = NULL;
  42
  43   self->priv = G_TYPE_INSTANCE_GET_PRIVATE(self, SLA_TYPE_APPLET, SLAWrapperPrivate);
  44   self->priv->background_pixmap = NULL;
  45
  46   self->priv->applet = new SimpleLauncherApplet(SL_APPLET_GCONF_PATH);
  47
  48   if ((colormap = gdk_screen_get_rgba_colormap(gdk_screen_get_default())) != NULL) {
  49     gtk_widget_set_colormap(GTK_WIDGET(self), colormap);
  50   }
  51 }
  52
  53 static void sla_wrapper_class_init(SLAWrapperClass *klass) {
  54   GtkWidgetClass *widget_class;
  55   GObjectClass *object_class;
  56
  57   widget_class = GTK_WIDGET_CLASS(klass);
  58   object_class = G_OBJECT_CLASS(klass);
  59
  60   object_class->finalize = sla_wrapper_finalize;
  61
  62   widget_class->expose_event = sla_wrapper_expose;
  63   widget_class->size_allocate = sla_wrapper_size_allocate;
  64   widget_class->size_request = sla_wrapper_size_request;
  65
  66   g_type_class_add_private(klass, sizeof(SLAWrapperPrivate));   // Do I need this?
  67 }
  68
  69 static void sla_wrapper_finalize(GObject *self) {
  70   SLAWrapperPrivate *priv = SLA_APPLET(self)->priv;
  71
  72   if (priv->background_pixmap != NULL) {
  73     g_object_unref(priv->background_pixmap);
  74     priv->background_pixmap = NULL;
  75   }
  76
  77   if (priv->applet != NULL) {
  78     delete priv->applet;
  79   }
  80 }
  81
  82 static void sla_wrapper_make_background(GtkWidget *widget, SLAWrapperPrivate *priv) {
  83   if (priv->background_pixmap != NULL) {
  84     g_object_unref(priv->background_pixmap);
  85     priv->background_pixmap = NULL;
  86   }
  87
  88   priv->background_pixmap = gdk_pixmap_new(widget->window, priv->applet->getWidth(), priv->applet->getHeight(), 32);
  89
  90   cairo_t *cr = gdk_cairo_create(priv->background_pixmap);
  91   double red, green, blue, alpha;
  92
  93   priv->applet->getBackgroundColour(red, green, blue, alpha);
  94
  95   cairo_set_source_rgba(cr, red, green, blue, alpha);
  96   cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
  97   cairo_paint(cr);
  98   cairo_destroy(cr);
  99 }
 100
 101 static gboolean sla_wrapper_expose(GtkWidget *widget, GdkEventExpose *event) {
 102   if (GTK_WIDGET_DRAWABLE(widget)) {
 103     SLAWrapperPrivate *priv = SLA_APPLET(widget)->priv;
 104
 105     if (priv->background_pixmap == NULL) {
 106       sla_wrapper_make_background(widget, priv);
 107     }
 108
 109     cairo_t *cr = gdk_cairo_create(widget->window);
 110     gdk_cairo_set_source_pixmap(cr, priv->background_pixmap, 0, 0);
 111
 112     cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
 113     cairo_paint(cr);
 114     cairo_destroy(cr);
 115
 116     return GTK_WIDGET_CLASS(sla_wrapper_parent_class)->expose_event(widget, event);
 117   } else {
 118     return FALSE;
 119   }
 120 }
 121
 122 static void sla_wrapper_size_allocate(GtkWidget *widget, GtkAllocation *alloc) {
 123   GTK_WIDGET_CLASS(sla_wrapper_parent_class)->size_allocate(widget, alloc);
 124 }
 125
 126 static void sla_wrapper_size_request(GtkWidget *widget, GtkRequisition *requisition) {
 127   if (GTK_WIDGET_DRAWABLE(widget)) {
 128     SLAWrapperPrivate *priv = SLA_APPLET(widget)->priv;
 129
 130     requisition->width = priv->applet->getWidth();
 131     requisition->height = priv->applet->getHeight();
 132   }
 133 }
 134
 135 // vim:ts=2:sw=2:et