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