libcheese/cheese-avatar-chooser.c

   1 /*
   2  * Copyright © 2009 Bastien Nocera <hadess@hadess.net>
   3  *
   4  * Licensed under the GNU General Public License Version 2
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "cheese-config.h"
  21
  22 #include <glib/gi18n.h>
  23 #include <canberra-gtk.h>
  24
  25 #include "cheese-camera.h"
  26 #include "cheese-widget-private.h"
  27 #include "cheese-flash.h"
  28 #include "cheese-avatar-chooser.h"
  29 #include "cheese-avatar-widget.h"
  30 #include "um-crop-area.h"
  31
  32 /**
  33  * SECTION:cheese-avatar-chooser
  34  * @short_description: A photo capture dialog for avatars
  35  * @stability: Unstable
  36  * @include: cheese/cheese-avatar-chooser.h
  37  *
  38  * #CheeseAvatarChooser presents a simple window to the user for taking a photo
  39  * for use as an avatar.
  40  */
  41
  42 enum
  43 {
  44   LAST_SIGNAL
  45 };
  46
  47 enum
  48 {
  49   PROP_0,
  50   PROP_PIXBUF,
  51   PROP_LAST
  52 };
  53
  54 enum
  55 {
  56   WIDGET_PAGE = 0,
  57   IMAGE_PAGE  = 1,
  58 };
  59
  60 struct _CheeseAvatarChooserPrivate
  61 {
  62   GtkWidget *widget;
  63 };
  64
  65 static GParamSpec *properties[PROP_LAST];
  66
  67 G_DEFINE_TYPE_WITH_PRIVATE (CheeseAvatarChooser, cheese_avatar_chooser, GTK_TYPE_DIALOG);
  68
  69 static void
  70 update_select_button (CheeseAvatarWidget  *widget,
  71                       GParamSpec          *pspec,
  72                       CheeseAvatarChooser *chooser)
  73 {
  74   GdkPixbuf *pixbuf;
  75
  76   g_object_get (G_OBJECT (widget), "pixbuf", &pixbuf, NULL);
  77   gtk_dialog_set_response_sensitive (GTK_DIALOG (chooser),
  78                                      GTK_RESPONSE_ACCEPT,
  79                                      pixbuf != NULL);
  80   if (pixbuf)
  81     g_object_unref (pixbuf);
  82 }
  83
  84 static void
  85 cheese_avatar_chooser_init (CheeseAvatarChooser *chooser)
  86 {
  87   CheeseAvatarChooserPrivate *priv = chooser->priv = cheese_avatar_chooser_get_instance_private (chooser);
  88
  89   gtk_dialog_add_buttons (GTK_DIALOG (chooser),
  90                           _("_Cancel"),
  91                           GTK_RESPONSE_REJECT,
  92                           _("_Select"),
  93                           GTK_RESPONSE_ACCEPT,
  94                           NULL);
  95   gtk_window_set_title (GTK_WINDOW (chooser), _("Take a Photo"));
  96
  97   gtk_dialog_set_response_sensitive (GTK_DIALOG (chooser),
  98                                      GTK_RESPONSE_ACCEPT,
  99                                      FALSE);
 100
 101   g_object_set (G_OBJECT (gtk_dialog_get_action_area (GTK_DIALOG (chooser))), "margin", 8, NULL);
 102
 103   priv->widget = cheese_avatar_widget_new ();
 104   gtk_widget_show (priv->widget);
 105   gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (chooser))),
 106                       priv->widget,
 107                       TRUE, TRUE, 0);
 108
 109   g_signal_connect (G_OBJECT (priv->widget), "notify::pixbuf",
 110                     G_CALLBACK (update_select_button), chooser);
 111
 112 }
 113
 114 static void
 115 cheese_avatar_chooser_get_property (GObject *object, guint prop_id,
 116                                     GValue *value, GParamSpec *pspec)
 117 {
 118   CheeseAvatarChooserPrivate *priv = ((CheeseAvatarChooser *) object)->priv;
 119
 120   switch (prop_id)
 121   {
 122     case PROP_PIXBUF:
 123       g_value_set_object (value, cheese_avatar_widget_get_picture (CHEESE_AVATAR_WIDGET (priv->widget)));
 124       break;
 125     default:
 126       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 127       break;
 128   }
 129 }
 130
 131 static void
 132 cheese_avatar_chooser_class_init (CheeseAvatarChooserClass *klass)
 133 {
 134   GObjectClass   *object_class = G_OBJECT_CLASS (klass);
 135
 136   object_class->get_property = cheese_avatar_chooser_get_property;
 137
 138   /**
 139    * CheeseAvatarChooser:pixbuf:
 140    *
 141    * A #GdkPixbuf object representing the cropped area of the picture, or %NULL.
 142    */
 143   properties[PROP_PIXBUF] = g_param_spec_object ("pixbuf",
 144                                                  "Pixbuf",
 145                                                  "A #GdkPixbuf object representing the cropped area of the picture, or %NULL.",
 146                                                  GDK_TYPE_PIXBUF,
 147                                                  G_PARAM_READABLE);
 148
 149   g_object_class_install_properties (object_class, PROP_LAST, properties);
 150 }
 151
 152 /**
 153  * cheese_avatar_chooser_new:
 154  *
 155  * Creates a new #CheeseAvatarChooser dialogue.
 156  *
 157  * Returns: a #CheeseAvatarChooser
 158  */
 159 GtkWidget *
 160 cheese_avatar_chooser_new (void)
 161 {
 162   return g_object_new (CHEESE_TYPE_AVATAR_CHOOSER, NULL);
 163 }
 164
 165 /**
 166  * cheese_avatar_chooser_get_picture:
 167  * @chooser: a #CheeseAvatarChooser dialogue
 168  *
 169  * Returns the portion of image selected through the builtin cropping tool,
 170  * after a picture has been captured on the webcam.
 171  *
 172  * Return value: a #GdkPixbuf object, or %NULL if no picture has been taken yet
 173  */
 174 GdkPixbuf *
 175 cheese_avatar_chooser_get_picture (CheeseAvatarChooser *chooser)
 176 {
 177   g_return_val_if_fail (CHEESE_IS_AVATAR_CHOOSER (chooser), NULL);
 178
 179   return cheese_avatar_widget_get_picture (CHEESE_AVATAR_WIDGET (chooser->priv->widget));
 180 }