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 extern "C" {
  31   static void sla_wrapper_init(SLAWrapper *self);
  32   static void sla_wrapper_class_init(SLAWrapperClass *klass);
  33   static void sla_wrapper_finalize(GObject *object);
  34   static gboolean sla_wrapper_expose(GtkWidget *widget, GdkEventExpose *event);
  35   static void sla_wrapper_size_allocate(GtkWidget *widget, GtkAllocation *alloc);
  36   static void sla_wrapper_size_request(GtkWidget *widget, GtkRequisition *requisition);
  37   static void sla_wrapper_make_background(GtkWidget *widget, SLAWrapperPrivate *priv);
  38   static GtkWidget *sla_wrapper_settings(HildonDesktopHomeItem *applet, GtkWidget *parent);
  39
  40 HD_DEFINE_PLUGIN(SLAWrapper, sla_wrapper, HILDON_DESKTOP_TYPE_HOME_ITEM)
  41 };
  42
  43 static void sla_wrapper_init(SLAWrapper *self) {
  44   GdkColormap *colormap = NULL;
  45
  46   self->priv = G_TYPE_INSTANCE_GET_PRIVATE(self, SLA_TYPE_APPLET, SLAWrapperPrivate);
  47   self->priv->background_pixmap = NULL;
  48
  49   self->priv->applet = new SimpleLauncherApplet(SL_APPLET_GCONF_PATH);
  50   self->priv->applet->doInit();   // FIXME: check the result
  51
  52   gtk_container_add(GTK_CONTAINER(self), self->priv->applet->getWidget());
  53
  54   if ((colormap = gdk_screen_get_rgba_colormap(gdk_screen_get_default())) != NULL) {
  55     gtk_widget_set_colormap(GTK_WIDGET(self), colormap);
  56   }
  57 }
  58
  59 static void sla_wrapper_class_init(SLAWrapperClass *klass) {
  60   GtkWidgetClass *widget_class;
  61   GObjectClass *object_class;
  62
  63   widget_class = GTK_WIDGET_CLASS(klass);
  64   object_class = G_OBJECT_CLASS(klass);
  65
  66   object_class->finalize = sla_wrapper_finalize;
  67
  68   widget_class->expose_event = sla_wrapper_expose;
  69   widget_class->size_allocate = sla_wrapper_size_allocate;
  70   widget_class->size_request = sla_wrapper_size_request;
  71
  72   HILDON_DESKTOP_HOME_ITEM_CLASS(klass)->settings = sla_wrapper_settings;
  73
  74   g_type_class_add_private(klass, sizeof(SLAWrapperPrivate));   // Do I need this?
  75 }
  76
  77 static void sla_wrapper_finalize(GObject *self) {
  78   SLAWrapperPrivate *priv = SLA_APPLET(self)->priv;
  79
  80   if (priv->background_pixmap != NULL) {
  81     g_object_unref(priv->background_pixmap);
  82     priv->background_pixmap = NULL;
  83   }
  84
  85   if (priv->applet != NULL) {
  86     delete priv->applet;
  87   }
  88 }
  89
  90 static GtkWidget *sla_wrapper_settings(HildonDesktopHomeItem *self, GtkWidget *parent) {
  91   if (GTK_IS_WINDOW(parent)) {
  92     SLAWrapperPrivate *priv = SLA_APPLET(self)->priv;
  93
  94     return priv->applet->settings(GTK_WINDOW(parent));
  95   } else {
  96     return NULL;
  97   }
  98 }
  99
 100 static void sla_wrapper_make_background(GtkWidget *widget, SLAWrapperPrivate *priv) {
 101   if (priv->background_pixmap != NULL) {
 102     g_object_unref(priv->background_pixmap);
 103     priv->background_pixmap = NULL;
 104   }
 105
 106   priv->background_pixmap = gdk_pixmap_new(widget->window, priv->applet->getWidth(), priv->applet->getHeight(), 32);
 107
 108   cairo_t *cr = gdk_cairo_create(priv->background_pixmap);
 109   double red, green, blue, alpha;
 110
 111   priv->applet->getBackgroundColour(red, green, blue, alpha);
 112
 113   cairo_set_source_rgba(cr, red, green, blue, alpha);
 114   cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
 115   cairo_paint(cr);
 116   cairo_destroy(cr);
 117 }
 118
 119 static gboolean sla_wrapper_expose(GtkWidget *widget, GdkEventExpose *event) {
 120   if (GTK_WIDGET_DRAWABLE(widget)) {
 121     SLAWrapperPrivate *priv = SLA_APPLET(widget)->priv;
 122
 123     if (priv->background_pixmap == NULL) {
 124       sla_wrapper_make_background(widget, priv);
 125     }
 126
 127     cairo_t *cr = gdk_cairo_create(widget->window);
 128     gdk_cairo_set_source_pixmap(cr, priv->background_pixmap, 0, 0);
 129
 130     cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
 131     cairo_paint(cr);
 132     cairo_destroy(cr);
 133
 134     return GTK_WIDGET_CLASS(sla_wrapper_parent_class)->expose_event(widget, event);
 135   } else {
 136     return FALSE;
 137   }
 138 }
 139
 140 static void sla_wrapper_size_allocate(GtkWidget *widget, GtkAllocation *alloc) {
 141   GTK_WIDGET_CLASS(sla_wrapper_parent_class)->size_allocate(widget, alloc);
 142 }
 143
 144 static void sla_wrapper_size_request(GtkWidget *widget, GtkRequisition *requisition) {
 145   if (GTK_WIDGET_DRAWABLE(widget)) {
 146     SLAWrapperPrivate *priv = SLA_APPLET(widget)->priv;
 147
 148     requisition->width = priv->applet->getWidth();
 149     requisition->height = priv->applet->getHeight();
 150   }
 151 }
 152
 153 // vim:ts=2:sw=2:et