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