Pileus Git - ~andy/gtk/blob - gtk/gtkcolorchooserdialog.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 2012 Red Hat, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "config.h"
  19
  20 #include "gtkdialog.h"
  21 #include "gtkstock.h"
  22 #include "gtkbutton.h"
  23 #include "gtkbox.h"
  24 #include "gtkprivate.h"
  25 #include "gtkintl.h"
  26
  27 #include "gtkcolorchooserprivate.h"
  28 #include "gtkcolorchooserdialog.h"
  29 #include "gtkcolorchooserwidget.h"
  30
  31 /**
  32  * SECTION:gtkcolorchooserdialog
  33  * @Short_description: A dialog for choosing colors
  34  * @Title: GtkColorChooserDialog
  35  * @See_also: #GtkColorChooser, #GtkDialog
  36  *
  37  * The #GtkColorChooserDialog widget is a dialog for choosing
  38  * a color. It implements the #GtkColorChooser interface.
  39  *
  40  * Since: 3.4
  41  */
  42
  43 struct _GtkColorChooserDialogPrivate
  44 {
  45   GtkWidget *chooser;
  46
  47   GtkWidget *select_button;
  48   GtkWidget *cancel_button;
  49 };
  50
  51 enum
  52 {
  53   PROP_ZERO,
  54   PROP_RGBA,
  55   PROP_USE_ALPHA,
  56   PROP_SHOW_EDITOR
  57 };
  58
  59 static void gtk_color_chooser_dialog_iface_init (GtkColorChooserInterface *iface);
  60
  61 G_DEFINE_TYPE_WITH_CODE (GtkColorChooserDialog, gtk_color_chooser_dialog, GTK_TYPE_DIALOG,
  62                          G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_CHOOSER,
  63                                                 gtk_color_chooser_dialog_iface_init))
  64
  65 static void
  66 propagate_notify (GObject               *o,
  67                   GParamSpec            *pspec,
  68                   GtkColorChooserDialog *cc)
  69 {
  70   g_object_notify (G_OBJECT (cc), pspec->name);
  71 }
  72
  73 static void
  74 save_color (GtkColorChooserDialog *dialog)
  75 {
  76   GdkRGBA color;
  77
  78   /* This causes the color chooser widget to save the
  79    * selected and custom colors to GSettings.
  80    */
  81   gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (dialog), &color);
  82   gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (dialog), &color);
  83 }
  84
  85 static void
  86 color_activated_cb (GtkColorChooser *chooser,
  87                     GdkRGBA         *color,
  88                     GtkDialog       *dialog)
  89 {
  90   save_color (GTK_COLOR_CHOOSER_DIALOG (dialog));
  91   gtk_dialog_response (dialog, GTK_RESPONSE_OK);
  92 }
  93
  94 static void
  95 selected_cb (GtkButton *button,
  96              GtkDialog *dialog)
  97 {
  98   save_color (GTK_COLOR_CHOOSER_DIALOG (dialog));
  99   gtk_dialog_response (dialog, GTK_RESPONSE_OK);
 100 }
 101
 102 static void
 103 gtk_color_chooser_dialog_init (GtkColorChooserDialog *cc)
 104 {
 105   GtkColorChooserDialogPrivate *priv;
 106   GtkDialog *dialog = GTK_DIALOG (cc);
 107   GtkWidget *action_area, *content_area;
 108
 109   cc->priv = G_TYPE_INSTANCE_GET_PRIVATE (cc,
 110                                           GTK_TYPE_COLOR_CHOOSER_DIALOG,
 111                                           GtkColorChooserDialogPrivate);
 112   priv = cc->priv;
 113
 114   content_area = gtk_dialog_get_content_area (dialog);
 115   action_area = gtk_dialog_get_action_area (dialog);
 116
 117   gtk_container_set_border_width (GTK_CONTAINER (dialog), 5);
 118   gtk_box_set_spacing (GTK_BOX (content_area), 2); /* 2 * 5 + 2 = 12 */
 119   gtk_container_set_border_width (GTK_CONTAINER (action_area), 5);
 120   gtk_box_set_spacing (GTK_BOX (action_area), 6);
 121
 122   gtk_widget_push_composite_child ();
 123
 124   gtk_window_set_resizable (GTK_WINDOW (cc), FALSE);
 125
 126   /* Create the content area */
 127   priv->chooser = gtk_color_chooser_widget_new ();
 128   gtk_container_set_border_width (GTK_CONTAINER (priv->chooser), 5);
 129   gtk_widget_show (priv->chooser);
 130   gtk_box_pack_start (GTK_BOX (content_area),
 131                       priv->chooser, TRUE, TRUE, 0);
 132
 133   g_signal_connect (priv->chooser, "notify::rgba",
 134                     G_CALLBACK (propagate_notify), cc);
 135
 136   g_signal_connect (priv->chooser, "notify::show-editor",
 137                     G_CALLBACK (propagate_notify), cc);
 138
 139   g_signal_connect (priv->chooser, "color-activated",
 140                     G_CALLBACK (color_activated_cb), cc);
 141
 142   /* Create the action area */
 143   priv->cancel_button = gtk_dialog_add_button (dialog,
 144                                                GTK_STOCK_CANCEL,
 145                                                GTK_RESPONSE_CANCEL);
 146
 147   /* We emit the response for the Select button manually,
 148    * since we want to save the color first
 149    */
 150   priv->select_button = gtk_button_new_from_stock (_("_Select"));
 151   g_signal_connect (priv->select_button, "clicked",
 152                     G_CALLBACK (selected_cb), dialog);
 153   gtk_widget_set_can_default (priv->select_button, TRUE);
 154   gtk_widget_show (priv->select_button);
 155   gtk_box_pack_end (GTK_BOX (gtk_dialog_get_action_area (dialog)),
 156                     priv->select_button, FALSE, TRUE, 0);
 157   gtk_widget_grab_default (priv->select_button);
 158
 159   gtk_dialog_set_alternative_button_order (dialog,
 160                                            GTK_RESPONSE_OK,
 161                                            GTK_RESPONSE_CANCEL,
 162                                            -1);
 163
 164   gtk_window_set_title (GTK_WINDOW (cc), _("Select a Color"));
 165
 166   gtk_widget_pop_composite_child ();
 167 }
 168
 169 static void
 170 gtk_color_chooser_dialog_map (GtkWidget *widget)
 171 {
 172   /* We never want the dialog to come up with the editor,
 173    * even if it was showing the editor the last time it was used.
 174    */
 175   g_object_set (GTK_COLOR_CHOOSER_DIALOG (widget)->priv->chooser,
 176                 "show-editor", FALSE, NULL);
 177
 178   GTK_WIDGET_CLASS (gtk_color_chooser_dialog_parent_class)->map (widget);
 179 }
 180
 181 static void
 182 gtk_color_chooser_dialog_get_property (GObject    *object,
 183                                        guint       prop_id,
 184                                        GValue     *value,
 185                                        GParamSpec *pspec)
 186 {
 187   GtkColorChooserDialog *cd = GTK_COLOR_CHOOSER_DIALOG (object);
 188   GtkColorChooser *cc = GTK_COLOR_CHOOSER (object);
 189
 190   switch (prop_id)
 191     {
 192     case PROP_RGBA:
 193       {
 194         GdkRGBA color;
 195
 196         gtk_color_chooser_get_rgba (cc, &color);
 197         g_value_set_boxed (value, &color);
 198       }
 199       break;
 200     case PROP_USE_ALPHA:
 201       g_value_set_boolean (value, gtk_color_chooser_get_use_alpha (GTK_COLOR_CHOOSER (cd->priv->chooser)));
 202       break;
 203     case PROP_SHOW_EDITOR:
 204       {
 205         gboolean show_editor;
 206         g_object_get (cd->priv->chooser, "show-editor", &show_editor, NULL);
 207         g_value_set_boolean (value, show_editor);
 208       }
 209       break;
 210     default:
 211       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 212       break;
 213     }
 214 }
 215
 216 static void
 217 gtk_color_chooser_dialog_set_property (GObject      *object,
 218                                        guint         prop_id,
 219                                        const GValue *value,
 220                                        GParamSpec   *pspec)
 221 {
 222   GtkColorChooserDialog *cd = GTK_COLOR_CHOOSER_DIALOG (object);
 223   GtkColorChooser *cc = GTK_COLOR_CHOOSER (object);
 224
 225   switch (prop_id)
 226     {
 227     case PROP_RGBA:
 228       gtk_color_chooser_set_rgba (cc, g_value_get_boxed (value));
 229       break;
 230     case PROP_USE_ALPHA:
 231       gtk_color_chooser_set_use_alpha (GTK_COLOR_CHOOSER (cd->priv->chooser), g_value_get_boolean (value));
 232       break;
 233     case PROP_SHOW_EDITOR:
 234       g_object_set (cd->priv->chooser,
 235                     "show-editor", g_value_get_boolean (value),
 236                     NULL);
 237       break;
 238     default:
 239       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 240       break;
 241     }
 242 }
 243
 244 static void
 245 gtk_color_chooser_dialog_class_init (GtkColorChooserDialogClass *class)
 246 {
 247   GObjectClass *object_class = G_OBJECT_CLASS (class);
 248   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 249
 250   object_class->get_property = gtk_color_chooser_dialog_get_property;
 251   object_class->set_property = gtk_color_chooser_dialog_set_property;
 252
 253   widget_class->map = gtk_color_chooser_dialog_map;
 254
 255   g_object_class_override_property (object_class, PROP_RGBA, "rgba");
 256   g_object_class_override_property (object_class, PROP_USE_ALPHA, "use-alpha");
 257   g_object_class_install_property (object_class, PROP_SHOW_EDITOR,
 258       g_param_spec_boolean ("show-editor", P_("Show editor"), P_("Show editor"),
 259                             FALSE, GTK_PARAM_READWRITE));
 260
 261
 262   g_type_class_add_private (class, sizeof (GtkColorChooserDialogPrivate));
 263 }
 264
 265 static void
 266 gtk_color_chooser_dialog_get_rgba (GtkColorChooser *chooser,
 267                                    GdkRGBA         *color)
 268 {
 269   GtkColorChooserDialog *cc = GTK_COLOR_CHOOSER_DIALOG (chooser);
 270
 271   gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (cc->priv->chooser), color);
 272 }
 273
 274 static void
 275 gtk_color_chooser_dialog_set_rgba (GtkColorChooser *chooser,
 276                                    const GdkRGBA   *color)
 277 {
 278   GtkColorChooserDialog *cc = GTK_COLOR_CHOOSER_DIALOG (chooser);
 279
 280   gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc->priv->chooser), color);
 281 }
 282
 283 static void
 284 gtk_color_chooser_dialog_add_palette (GtkColorChooser *chooser,
 285                                       GtkOrientation   orientation,
 286                                       gint             colors_per_line,
 287                                       gint             n_colors,
 288                                       GdkRGBA         *colors)
 289 {
 290   GtkColorChooserDialog *cc = GTK_COLOR_CHOOSER_DIALOG (chooser);
 291
 292   gtk_color_chooser_add_palette (GTK_COLOR_CHOOSER (cc->priv->chooser),
 293                                  orientation, colors_per_line, n_colors, colors);
 294 }
 295
 296 static void
 297 gtk_color_chooser_dialog_iface_init (GtkColorChooserInterface *iface)
 298 {
 299   iface->get_rgba = gtk_color_chooser_dialog_get_rgba;
 300   iface->set_rgba = gtk_color_chooser_dialog_set_rgba;
 301   iface->add_palette = gtk_color_chooser_dialog_add_palette;
 302 }
 303
 304 /**
 305  * gtk_color_chooser_dialog_new:
 306  * @title: (allow-none): Title of the dialog, or %NULL
 307  * @parent: (allow-none): Transient parent of the dialog, or %NULL
 308  *
 309  * Creates a new #GtkColorChooserDialog.
 310  *
 311  * Return value: a new #GtkColorChooserDialog
 312  *
 313  * Since: 3.4
 314  */
 315 GtkWidget *
 316 gtk_color_chooser_dialog_new (const gchar *title,
 317                               GtkWindow   *parent)
 318 {
 319   GtkColorChooserDialog *dialog;
 320
 321   dialog = g_object_new (GTK_TYPE_COLOR_CHOOSER_DIALOG,
 322                          "title", title,
 323                          "transient-for", parent,
 324                          NULL);
 325
 326   return GTK_WIDGET (dialog);
 327 }