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

   1 /*
   2  * GTK - The GIMP Toolkit
   3  * Copyright (C) 1998, 1999 Red Hat, Inc.
   4  * All rights reserved.
   5  *
   6  * This Library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This Library 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 GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public
  17  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 /* Color picker button for GNOME
  20  *
  21  * Author: Federico Mena <federico@nuclecu.unam.mx>
  22  *
  23  * Modified by the GTK+ Team and others 2003.  See the AUTHORS
  24  * file for a list of people on the GTK+ Team.  See the ChangeLog
  25  * files for a list of changes.  These files are distributed with
  26  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  27  */
  28
  29 #define GDK_DISABLE_DEPRECATION_WARNINGS
  30 #include "config.h"
  31
  32 #include "gtkcolorbutton.h"
  33
  34 #include "gtkbutton.h"
  35 #include "gtkmain.h"
  36 #include "gtkcolorchooser.h"
  37 #include "gtkcolorchooserprivate.h"
  38 #include "gtkcolorchooserdialog.h"
  39 #include "gtkdnd.h"
  40 #include "gtkdrawingarea.h"
  41 #include "gtkmarshalers.h"
  42 #include "gtkprivate.h"
  43 #include "gtkintl.h"
  44
  45
  46 /**
  47  * SECTION:gtkcolorbutton
  48  * @Short_description: A button to launch a color selection dialog
  49  * @Title: GtkColorButton
  50  * @See_also: #GtkColorSelectionDialog, #GtkFontButton
  51  *
  52  * The #GtkColorButton is a button which displays the currently selected
  53  * color an allows to open a color selection dialog to change the color.
  54  * It is suitable widget for selecting a color in a preference dialog.
  55  */
  56
  57
  58 /* Size of checks and gray levels for alpha compositing checkerboard */
  59 #define CHECK_SIZE  4
  60 #define CHECK_DARK  (1.0 / 3.0)
  61 #define CHECK_LIGHT (2.0 / 3.0)
  62
  63 struct _GtkColorButtonPrivate
  64 {
  65   GtkWidget *draw_area; /* Widget where we draw the color sample */
  66   GtkWidget *cs_dialog; /* Color selection dialog */
  67
  68   gchar *title;         /* Title for the color selection window */
  69   GdkRGBA rgba;
  70
  71   guint use_alpha : 1;  /* Use alpha or not */
  72 };
  73
  74 /* Properties */
  75 enum
  76 {
  77   PROP_0,
  78   PROP_USE_ALPHA,
  79   PROP_TITLE,
  80   PROP_COLOR,
  81   PROP_ALPHA,
  82   PROP_RGBA
  83 };
  84
  85 /* Signals */
  86 enum
  87 {
  88   COLOR_SET,
  89   LAST_SIGNAL
  90 };
  91
  92 /* gobject signals */
  93 static void gtk_color_button_finalize      (GObject             *object);
  94 static void gtk_color_button_set_property  (GObject        *object,
  95                                             guint           param_id,
  96                                             const GValue   *value,
  97                                             GParamSpec     *pspec);
  98 static void gtk_color_button_get_property  (GObject        *object,
  99                                             guint           param_id,
 100                                             GValue         *value,
 101                                             GParamSpec     *pspec);
 102
 103 /* gtkwidget signals */
 104 static void gtk_color_button_state_changed (GtkWidget           *widget,
 105                                             GtkStateType         previous_state);
 106
 107 /* gtkbutton signals */
 108 static void gtk_color_button_clicked       (GtkButton           *button);
 109
 110 /* source side drag signals */
 111 static void gtk_color_button_drag_begin (GtkWidget        *widget,
 112                                          GdkDragContext   *context,
 113                                          gpointer          data);
 114 static void gtk_color_button_drag_data_get (GtkWidget        *widget,
 115                                             GdkDragContext   *context,
 116                                             GtkSelectionData *selection_data,
 117                                             guint             info,
 118                                             guint             time,
 119                                             GtkColorButton   *button);
 120
 121 /* target side drag signals */
 122 static void gtk_color_button_drag_data_received (GtkWidget        *widget,
 123                                                  GdkDragContext   *context,
 124                                                  gint              x,
 125                                                  gint              y,
 126                                                  GtkSelectionData *selection_data,
 127                                                  guint             info,
 128                                                  guint32           time,
 129                                                  GtkColorButton   *button);
 130
 131
 132 static guint color_button_signals[LAST_SIGNAL] = { 0 };
 133
 134 static const GtkTargetEntry drop_types[] = { { "application/x-color", 0, 0 } };
 135
 136 static void gtk_color_button_iface_init (GtkColorChooserInterface *iface);
 137
 138 G_DEFINE_TYPE_WITH_CODE (GtkColorButton, gtk_color_button, GTK_TYPE_BUTTON,
 139                          G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_CHOOSER,
 140                                                 gtk_color_button_iface_init))
 141
 142 static void
 143 gtk_color_button_class_init (GtkColorButtonClass *klass)
 144 {
 145   GObjectClass *gobject_class;
 146   GtkWidgetClass *widget_class;
 147   GtkButtonClass *button_class;
 148
 149   gobject_class = G_OBJECT_CLASS (klass);
 150   widget_class = GTK_WIDGET_CLASS (klass);
 151   button_class = GTK_BUTTON_CLASS (klass);
 152
 153   gobject_class->get_property = gtk_color_button_get_property;
 154   gobject_class->set_property = gtk_color_button_set_property;
 155   gobject_class->finalize = gtk_color_button_finalize;
 156   widget_class->state_changed = gtk_color_button_state_changed;
 157   button_class->clicked = gtk_color_button_clicked;
 158   klass->color_set = NULL;
 159
 160   /**
 161    * GtkColorButton:use-alpha:
 162    *
 163    * If this property is set to %TRUE, the color swatch on the button is
 164    * rendered against a checkerboard background to show its opacity and
 165    * the opacity slider is displayed in the color selection dialog.
 166    *
 167    * Since: 2.4
 168    */
 169   g_object_class_install_property (gobject_class,
 170                                    PROP_USE_ALPHA,
 171                                    g_param_spec_boolean ("use-alpha", P_("Use alpha"),
 172                                                          P_("Whether to give the color an alpha value"),
 173                                                          FALSE,
 174                                                          GTK_PARAM_READWRITE));
 175
 176   /**
 177    * GtkColorButton:title:
 178    *
 179    * The title of the color selection dialog
 180    *
 181    * Since: 2.4
 182    */
 183   g_object_class_install_property (gobject_class,
 184                                    PROP_TITLE,
 185                                    g_param_spec_string ("title",
 186                                                         P_("Title"),
 187                                                         P_("The title of the color selection dialog"),
 188                                                         _("Pick a Color"),
 189                                                         GTK_PARAM_READWRITE));
 190
 191   /**
 192    * GtkColorButton:color:
 193    *
 194    * The selected color.
 195    *
 196    * Since: 2.4
 197    *
 198    * Deprecated: 3.4: Use #GtkColorButton:rgba instead.
 199    */
 200   g_object_class_install_property (gobject_class,
 201                                    PROP_COLOR,
 202                                    g_param_spec_boxed ("color",
 203                                                        P_("Current Color"),
 204                                                        P_("The selected color"),
 205                                                        GDK_TYPE_COLOR,
 206                                                        GTK_PARAM_READWRITE | G_PARAM_DEPRECATED));
 207
 208   /**
 209    * GtkColorButton:alpha:
 210    *
 211    * The selected opacity value (0 fully transparent, 65535 fully opaque).
 212    *
 213    * Since: 2.4
 214    */
 215   g_object_class_install_property (gobject_class,
 216                                    PROP_ALPHA,
 217                                    g_param_spec_uint ("alpha",
 218                                                       P_("Current Alpha"),
 219                                                       P_("The selected opacity value (0 fully transparent, 65535 fully opaque)"),
 220                                                       0, 65535, 65535,
 221                                                       GTK_PARAM_READWRITE));
 222
 223   /**
 224    * GtkColorButton:rgba:
 225    *
 226    * The RGBA color.
 227    *
 228    * Since: 3.0
 229    */
 230   g_object_class_install_property (gobject_class,
 231                                    PROP_RGBA,
 232                                    g_param_spec_boxed ("rgba",
 233                                                        P_("Current RGBA Color"),
 234                                                        P_("The selected RGBA color"),
 235                                                        GDK_TYPE_RGBA,
 236                                                        GTK_PARAM_READWRITE));
 237
 238
 239   /**
 240    * GtkColorButton::color-set:
 241    * @widget: the object which received the signal.
 242    *
 243    * The ::color-set signal is emitted when the user selects a color.
 244    * When handling this signal, use gtk_color_button_get_rgba() to
 245    * find out which color was just selected.
 246    *
 247    * Note that this signal is only emitted when the <emphasis>user</emphasis>
 248    * changes the color. If you need to react to programmatic color changes
 249    * as well, use the notify::color signal.
 250    *
 251    * Since: 2.4
 252    */
 253   color_button_signals[COLOR_SET] = g_signal_new (I_("color-set"),
 254                                                   G_TYPE_FROM_CLASS (gobject_class),
 255                                                   G_SIGNAL_RUN_FIRST,
 256                                                   G_STRUCT_OFFSET (GtkColorButtonClass, color_set),
 257                                                   NULL, NULL,
 258                                                   _gtk_marshal_VOID__VOID,
 259                                                   G_TYPE_NONE, 0);
 260
 261   g_type_class_add_private (gobject_class, sizeof (GtkColorButtonPrivate));
 262 }
 263
 264 static gboolean
 265 gtk_color_button_has_alpha (GtkColorButton *button)
 266 {
 267   return button->priv->use_alpha && button->priv->rgba.alpha < 1;
 268 }
 269
 270 /* Handle exposure events for the color picker's drawing area */
 271 static gint
 272 gtk_color_button_draw_cb (GtkWidget *widget,
 273                           cairo_t   *cr,
 274                           gpointer   data)
 275 {
 276   GtkColorButton *button = GTK_COLOR_BUTTON (data);
 277   cairo_pattern_t *checkered;
 278
 279   if (gtk_color_button_has_alpha (button))
 280     {
 281       cairo_set_source_rgb (cr, CHECK_DARK, CHECK_DARK, CHECK_DARK);
 282       cairo_paint (cr);
 283
 284       cairo_set_source_rgb (cr, CHECK_LIGHT, CHECK_LIGHT, CHECK_LIGHT);
 285       cairo_scale (cr, CHECK_SIZE, CHECK_SIZE);
 286
 287       checkered = _gtk_color_chooser_get_checkered_pattern ();
 288       cairo_mask (cr, checkered);
 289       cairo_pattern_destroy (checkered);
 290
 291       gdk_cairo_set_source_rgba (cr, &button->priv->rgba);
 292     }
 293   else
 294     {
 295       cairo_set_source_rgb (cr,
 296                             button->priv->rgba.red,
 297                             button->priv->rgba.green,
 298                             button->priv->rgba.blue);
 299     }
 300
 301   cairo_paint (cr);
 302
 303   if (!gtk_widget_is_sensitive (GTK_WIDGET (button)))
 304     {
 305       GtkStyleContext *context;
 306       GdkRGBA color;
 307
 308       context = gtk_widget_get_style_context (widget);
 309       gtk_style_context_get_background_color (context, GTK_STATE_FLAG_INSENSITIVE, &color);
 310
 311       gdk_cairo_set_source_rgba (cr, &color);
 312       checkered = _gtk_color_chooser_get_checkered_pattern ();
 313       cairo_mask (cr, checkered);
 314       cairo_pattern_destroy (checkered);
 315     }
 316
 317   return FALSE;
 318 }
 319
 320 static void
 321 gtk_color_button_state_changed (GtkWidget   *widget,
 322                                 GtkStateType previous_state)
 323 {
 324   gtk_widget_queue_draw (widget);
 325 }
 326
 327 static void
 328 gtk_color_button_drag_data_received (GtkWidget        *widget,
 329                                      GdkDragContext   *context,
 330                                      gint              x,
 331                                      gint              y,
 332                                      GtkSelectionData *selection_data,
 333                                      guint             info,
 334                                      guint32           time,
 335                                      GtkColorButton   *button)
 336 {
 337   gint length;
 338   guint16 *dropped;
 339
 340   length = gtk_selection_data_get_length (selection_data);
 341
 342   if (length < 0)
 343     return;
 344
 345   /* We accept drops with the wrong format, since the KDE color
 346    * chooser incorrectly drops application/x-color with format 8.
 347    */
 348   if (length != 8)
 349     {
 350       g_warning ("%s: Received invalid color data", G_STRFUNC);
 351       return;
 352     }
 353
 354
 355   dropped = (guint16 *) gtk_selection_data_get_data (selection_data);
 356
 357   button->priv->rgba.red = dropped[0] / 65535.;
 358   button->priv->rgba.green = dropped[1] / 65535.;
 359   button->priv->rgba.blue = dropped[2] / 65535.;
 360   button->priv->rgba.alpha = dropped[3] / 65535.;
 361
 362   gtk_widget_queue_draw (button->priv->draw_area);
 363
 364   g_signal_emit (button, color_button_signals[COLOR_SET], 0);
 365
 366   g_object_freeze_notify (G_OBJECT (button));
 367   g_object_notify (G_OBJECT (button), "color");
 368   g_object_notify (G_OBJECT (button), "alpha");
 369   g_object_notify (G_OBJECT (button), "rgba");
 370   g_object_thaw_notify (G_OBJECT (button));
 371 }
 372
 373 static void
 374 set_color_icon (GdkDragContext *context,
 375                 GdkRGBA        *rgba)
 376 {
 377   cairo_surface_t *surface;
 378   cairo_t *cr;
 379
 380   surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
 381                                         48, 32);
 382   cr = cairo_create (surface);
 383
 384   gdk_cairo_set_source_rgba (cr, rgba);
 385   cairo_paint (cr);
 386
 387   gtk_drag_set_icon_surface (context, surface);
 388
 389   cairo_destroy (cr);
 390   cairo_surface_destroy (surface);
 391 }
 392
 393 static void
 394 gtk_color_button_drag_begin (GtkWidget      *widget,
 395                              GdkDragContext *context,
 396                              gpointer        data)
 397 {
 398   GtkColorButton *button = data;
 399
 400   set_color_icon (context, &button->priv->rgba);
 401 }
 402
 403 static void
 404 gtk_color_button_drag_data_get (GtkWidget        *widget,
 405                                 GdkDragContext   *context,
 406                                 GtkSelectionData *selection_data,
 407                                 guint             info,
 408                                 guint             time,
 409                                 GtkColorButton   *button)
 410 {
 411   guint16 dropped[4];
 412
 413   dropped[0] = (guint16) (button->priv->rgba.red * 65535);
 414   dropped[1] = (guint16) (button->priv->rgba.green * 65535);
 415   dropped[2] = (guint16) (button->priv->rgba.blue * 65535);
 416   dropped[3] = (guint16) (button->priv->rgba.alpha * 65535);
 417
 418   gtk_selection_data_set (selection_data,
 419                           gtk_selection_data_get_target (selection_data),
 420                           16, (guchar *)dropped, 8);
 421 }
 422
 423 static void
 424 gtk_color_button_init (GtkColorButton *button)
 425 {
 426   PangoLayout *layout;
 427   PangoRectangle rect;
 428
 429   /* Create the widgets */
 430   button->priv = G_TYPE_INSTANCE_GET_PRIVATE (button,
 431                                               GTK_TYPE_COLOR_BUTTON,
 432                                               GtkColorButtonPrivate);
 433
 434   gtk_widget_push_composite_child ();
 435
 436   button->priv->draw_area = gtk_drawing_area_new ();
 437   layout = gtk_widget_create_pango_layout (GTK_WIDGET (button), "Black");
 438   pango_layout_get_pixel_extents (layout, NULL, &rect);
 439   g_object_unref (layout);
 440
 441   gtk_widget_set_size_request (button->priv->draw_area,
 442                                rect.width, rect.height);
 443
 444   g_signal_connect (button->priv->draw_area, "draw",
 445                     G_CALLBACK (gtk_color_button_draw_cb), button);
 446   gtk_container_add (GTK_CONTAINER (button), button->priv->draw_area);
 447   gtk_widget_show (button->priv->draw_area);
 448
 449   button->priv->title = g_strdup (_("Pick a Color")); /* default title */
 450
 451   /* Start with opaque black, alpha disabled */
 452   button->priv->rgba.red = 0;
 453   button->priv->rgba.green = 0;
 454   button->priv->rgba.blue = 0;
 455   button->priv->rgba.alpha = 1;
 456   button->priv->use_alpha = FALSE;
 457
 458   gtk_drag_dest_set (GTK_WIDGET (button),
 459                      GTK_DEST_DEFAULT_MOTION |
 460                      GTK_DEST_DEFAULT_HIGHLIGHT |
 461                      GTK_DEST_DEFAULT_DROP,
 462                      drop_types, 1, GDK_ACTION_COPY);
 463   gtk_drag_source_set (GTK_WIDGET (button),
 464                        GDK_BUTTON1_MASK|GDK_BUTTON3_MASK,
 465                        drop_types, 1,
 466                        GDK_ACTION_COPY);
 467   g_signal_connect (button, "drag-begin",
 468                     G_CALLBACK (gtk_color_button_drag_begin), button);
 469   g_signal_connect (button, "drag-data-received",
 470                     G_CALLBACK (gtk_color_button_drag_data_received), button);
 471   g_signal_connect (button, "drag-data-get",
 472                     G_CALLBACK (gtk_color_button_drag_data_get), button);
 473
 474   gtk_widget_pop_composite_child ();
 475 }
 476
 477 static void
 478 gtk_color_button_finalize (GObject *object)
 479 {
 480   GtkColorButton *button = GTK_COLOR_BUTTON (object);
 481
 482   if (button->priv->cs_dialog != NULL)
 483     gtk_widget_destroy (button->priv->cs_dialog);
 484   button->priv->cs_dialog = NULL;
 485
 486   g_free (button->priv->title);
 487   button->priv->title = NULL;
 488
 489   G_OBJECT_CLASS (gtk_color_button_parent_class)->finalize (object);
 490 }
 491
 492
 493 /**
 494  * gtk_color_button_new:
 495  *
 496  * Creates a new color button.
 497  *
 498  * This returns a widget in the form of a small button containing
 499  * a swatch representing the current selected color. When the button
 500  * is clicked, a color-selection dialog will open, allowing the user
 501  * to select a color. The swatch will be updated to reflect the new
 502  * color when the user finishes.
 503  *
 504  * Returns: a new color button
 505  *
 506  * Since: 2.4
 507  */
 508 GtkWidget *
 509 gtk_color_button_new (void)
 510 {
 511   return g_object_new (GTK_TYPE_COLOR_BUTTON, NULL);
 512 }
 513
 514 /**
 515  * gtk_color_button_new_with_color:
 516  * @color: A #GdkColor to set the current color with
 517  *
 518  * Creates a new color button.
 519  *
 520  * Returns: a new color button
 521  *
 522  * Since: 2.4
 523  *
 524  * Deprecated: 3.4: Use gtk_color_button_new_with_rgba() instead.
 525  */
 526 GtkWidget *
 527 gtk_color_button_new_with_color (const GdkColor *color)
 528 {
 529   return g_object_new (GTK_TYPE_COLOR_BUTTON, "color", color, NULL);
 530 }
 531
 532 /**
 533  * gtk_color_button_new_with_rgba:
 534  * @rgba: A #GdkRGBA to set the current color with
 535  *
 536  * Creates a new color button.
 537  *
 538  * Returns: a new color button
 539  *
 540  * Since: 3.0
 541  */
 542 GtkWidget *
 543 gtk_color_button_new_with_rgba (const GdkRGBA *rgba)
 544 {
 545   return g_object_new (GTK_TYPE_COLOR_BUTTON, "rgba", rgba, NULL);
 546 }
 547
 548 static gboolean
 549 dialog_destroy (GtkWidget *widget,
 550                 gpointer   data)
 551 {
 552   GtkColorButton *button = GTK_COLOR_BUTTON (data);
 553
 554   button->priv->cs_dialog = NULL;
 555
 556   return FALSE;
 557 }
 558
 559 static void
 560 dialog_response (GtkDialog *dialog,
 561                  gint       response,
 562                  gpointer   data)
 563 {
 564   if (response == GTK_RESPONSE_CANCEL)
 565     gtk_widget_hide (GTK_WIDGET (dialog));
 566   else if (response == GTK_RESPONSE_OK)
 567     {
 568       GtkColorButton *button = GTK_COLOR_BUTTON (data);
 569
 570       gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (dialog),
 571                                   &button->priv->rgba);
 572
 573       gtk_widget_hide (GTK_WIDGET (dialog));
 574
 575       gtk_widget_queue_draw (button->priv->draw_area);
 576
 577       g_signal_emit (button, color_button_signals[COLOR_SET], 0);
 578
 579       g_object_freeze_notify (G_OBJECT (button));
 580       g_object_notify (G_OBJECT (button), "color");
 581       g_object_notify (G_OBJECT (button), "alpha");
 582       g_object_notify (G_OBJECT (button), "rgba");
 583       g_object_thaw_notify (G_OBJECT (button));
 584     }
 585 }
 586
 587 /* Create the dialog and connects its buttons */
 588 static void
 589 ensure_dialog (GtkColorButton *button)
 590 {
 591   GtkWidget *parent, *dialog;
 592
 593   if (button->priv->cs_dialog != NULL)
 594     return;
 595
 596   parent = gtk_widget_get_toplevel (GTK_WIDGET (button));
 597
 598   button->priv->cs_dialog = dialog = gtk_color_chooser_dialog_new (button->priv->title, NULL);
 599
 600   if (gtk_widget_is_toplevel (parent) && GTK_IS_WINDOW (parent))
 601   {
 602     if (GTK_WINDOW (parent) != gtk_window_get_transient_for (GTK_WINDOW (dialog)))
 603       gtk_window_set_transient_for (GTK_WINDOW (dialog), GTK_WINDOW (parent));
 604
 605     gtk_window_set_modal (GTK_WINDOW (dialog),
 606                             gtk_window_get_modal (GTK_WINDOW (parent)));
 607   }
 608
 609   g_signal_connect (dialog, "response",
 610                     G_CALLBACK (dialog_response), button);
 611   g_signal_connect (dialog, "destroy",
 612                     G_CALLBACK (dialog_destroy), button);
 613 }
 614
 615
 616 static void
 617 gtk_color_button_clicked (GtkButton *b)
 618 {
 619   GtkColorButton *button = GTK_COLOR_BUTTON (b);
 620
 621   /* if dialog already exists, make sure it's shown and raised */
 622   ensure_dialog (button);
 623
 624   gtk_color_chooser_set_use_alpha (GTK_COLOR_CHOOSER (button->priv->cs_dialog),
 625                                    button->priv->use_alpha);
 626
 627   gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (button->priv->cs_dialog),
 628                               &button->priv->rgba);
 629
 630   gtk_window_present (GTK_WINDOW (button->priv->cs_dialog));
 631 }
 632
 633 /**
 634  * gtk_color_button_set_color:
 635  * @button: a #GtkColorButton
 636  * @color: A #GdkColor to set the current color with
 637  *
 638  * Sets the current color to be @color.
 639  *
 640  * Since: 2.4
 641  *
 642  * Deprecated: Use gtk_color_chooser_set_rgba() instead.
 643  */
 644 void
 645 gtk_color_button_set_color (GtkColorButton *button,
 646                             const GdkColor *color)
 647 {
 648   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 649   g_return_if_fail (color != NULL);
 650
 651   button->priv->rgba.red = color->red / 65535.;
 652   button->priv->rgba.green = color->green / 65535.;
 653   button->priv->rgba.blue = color->blue / 65535.;
 654
 655   gtk_widget_queue_draw (button->priv->draw_area);
 656
 657   g_object_notify (G_OBJECT (button), "color");
 658   g_object_notify (G_OBJECT (button), "rgba");
 659 }
 660
 661
 662 /**
 663  * gtk_color_button_set_alpha:
 664  * @button: a #GtkColorButton
 665  * @alpha: an integer between 0 and 65535
 666  *
 667  * Sets the current opacity to be @alpha.
 668  *
 669  * Since: 2.4
 670  *
 671  * Deprecated: 3.4: Use gtk_color_chooser_set_rgba() instead.
 672  */
 673 void
 674 gtk_color_button_set_alpha (GtkColorButton *button,
 675                             guint16         alpha)
 676 {
 677   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 678
 679   button->priv->rgba.alpha = alpha / 65535.;
 680
 681   gtk_widget_queue_draw (button->priv->draw_area);
 682
 683   g_object_notify (G_OBJECT (button), "alpha");
 684   g_object_notify (G_OBJECT (button), "rgba");
 685 }
 686
 687 /**
 688  * gtk_color_button_get_color:
 689  * @button: a #GtkColorButton
 690  * @color: (out): a #GdkColor to fill in with the current color
 691  *
 692  * Sets @color to be the current color in the #GtkColorButton widget.
 693  *
 694  * Since: 2.4
 695  *
 696  * Deprecated: 3.4: Use gtk_color_chooser_get_rgba() instead.
 697  */
 698 void
 699 gtk_color_button_get_color (GtkColorButton *button,
 700                             GdkColor       *color)
 701 {
 702   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 703
 704   color->red = (guint16) (button->priv->rgba.red * 65535);
 705   color->green = (guint16) (button->priv->rgba.green * 65535);
 706   color->blue = (guint16) (button->priv->rgba.blue * 65535);
 707 }
 708
 709 /**
 710  * gtk_color_button_get_alpha:
 711  * @button: a #GtkColorButton
 712  *
 713  * Returns the current alpha value.
 714  *
 715  * Return value: an integer between 0 and 65535
 716  *
 717  * Since: 2.4
 718  *
 719  * Deprecated: 3.4: Use gtk_color_chooser_get_rgba() instead.
 720  */
 721 guint16
 722 gtk_color_button_get_alpha (GtkColorButton *button)
 723 {
 724   g_return_val_if_fail (GTK_IS_COLOR_BUTTON (button), 0);
 725
 726   return (guint16) (button->priv->rgba.alpha * 65535);
 727 }
 728
 729 /**
 730  * gtk_color_button_set_rgba: (skip)
 731  * @button: a #GtkColorButton
 732  * @rgba: a #GdkRGBA to set the current color with
 733  *
 734  * Sets the current color to be @rgba.
 735  *
 736  * Since: 3.0
 737  *
 738  * Deprecated: 3.4: Use gtk_color_chooser_set_rgba() instead.
 739  */
 740 void
 741 gtk_color_button_set_rgba (GtkColorButton *button,
 742                            const GdkRGBA  *rgba)
 743 {
 744   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 745   g_return_if_fail (rgba != NULL);
 746
 747   button->priv->rgba = *rgba;
 748   gtk_widget_queue_draw (button->priv->draw_area);
 749
 750   g_object_notify (G_OBJECT (button), "color");
 751   g_object_notify (G_OBJECT (button), "alpha");
 752   g_object_notify (G_OBJECT (button), "rgba");
 753 }
 754
 755 /**
 756  * gtk_color_button_get_rgba: (skip)
 757  * @button: a #GtkColorButton
 758  * @rgba: (out): a #GdkRGBA to fill in with the current color
 759  *
 760  * Sets @rgba to be the current color in the #GtkColorButton widget.
 761  *
 762  * Since: 3.0
 763  *
 764  * Deprecated: 3.4: Use gtk_color_chooser_get_rgba() instead.
 765  */
 766 void
 767 gtk_color_button_get_rgba (GtkColorButton *button,
 768                            GdkRGBA        *rgba)
 769 {
 770   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 771   g_return_if_fail (rgba != NULL);
 772
 773   *rgba = button->priv->rgba;
 774 }
 775
 776 /**
 777  * gtk_color_button_set_use_alpha:
 778  * @button: a #GtkColorButton
 779  * @use_alpha: %TRUE if color button should use alpha channel, %FALSE if not
 780  *
 781  * Sets whether or not the color button should use the alpha channel.
 782  *
 783  * Since: 2.4
 784  *
 785  * Deprecated: 3.4: Use gtk_color_chooser_set_use_alpha() instead.
 786  */
 787 void
 788 gtk_color_button_set_use_alpha (GtkColorButton *button,
 789                                 gboolean        use_alpha)
 790 {
 791   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 792
 793   use_alpha = (use_alpha != FALSE);
 794
 795   if (button->priv->use_alpha != use_alpha)
 796     {
 797       button->priv->use_alpha = use_alpha;
 798
 799       gtk_widget_queue_draw (button->priv->draw_area);
 800
 801       g_object_notify (G_OBJECT (button), "use-alpha");
 802     }
 803 }
 804
 805 /**
 806  * gtk_color_button_get_use_alpha:
 807  * @button: a #GtkColorButton
 808  *
 809  * Does the color selection dialog use the alpha channel ?
 810  *
 811  * Returns: %TRUE if the color sample uses alpha channel, %FALSE if not
 812  *
 813  * Since: 2.4
 814  *
 815  * Deprecated: 3.4: Use gtk_color_chooser_get_use_alpha() instead.
 816  */
 817 gboolean
 818 gtk_color_button_get_use_alpha (GtkColorButton *button)
 819 {
 820   g_return_val_if_fail (GTK_IS_COLOR_BUTTON (button), FALSE);
 821
 822   return button->priv->use_alpha;
 823 }
 824
 825
 826 /**
 827  * gtk_color_button_set_title:
 828  * @button: a #GtkColorButton
 829  * @title: String containing new window title
 830  *
 831  * Sets the title for the color selection dialog.
 832  *
 833  * Since: 2.4
 834  */
 835 void
 836 gtk_color_button_set_title (GtkColorButton *button,
 837                             const gchar    *title)
 838 {
 839   gchar *old_title;
 840
 841   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 842
 843   old_title = button->priv->title;
 844   button->priv->title = g_strdup (title);
 845   g_free (old_title);
 846
 847   if (button->priv->cs_dialog)
 848     gtk_window_set_title (GTK_WINDOW (button->priv->cs_dialog),
 849                           button->priv->title);
 850
 851   g_object_notify (G_OBJECT (button), "title");
 852 }
 853
 854 /**
 855  * gtk_color_button_get_title:
 856  * @button: a #GtkColorButton
 857  *
 858  * Gets the title of the color selection dialog.
 859  *
 860  * Returns: An internal string, do not free the return value
 861  *
 862  * Since: 2.4
 863  */
 864 const gchar *
 865 gtk_color_button_get_title (GtkColorButton *button)
 866 {
 867   g_return_val_if_fail (GTK_IS_COLOR_BUTTON (button), NULL);
 868
 869   return button->priv->title;
 870 }
 871
 872 static void
 873 gtk_color_button_set_property (GObject      *object,
 874                                guint         param_id,
 875                                const GValue *value,
 876                                GParamSpec   *pspec)
 877 {
 878   GtkColorButton *button = GTK_COLOR_BUTTON (object);
 879
 880   switch (param_id)
 881     {
 882     case PROP_USE_ALPHA:
 883       gtk_color_button_set_use_alpha (button, g_value_get_boolean (value));
 884       break;
 885     case PROP_TITLE:
 886       gtk_color_button_set_title (button, g_value_get_string (value));
 887       break;
 888     case PROP_COLOR:
 889       {
 890         GdkColor *color;
 891         GdkRGBA rgba;
 892
 893         color = g_value_get_boxed (value);
 894
 895         rgba.red = color->red / 65535.0;
 896         rgba.green = color->green / 65535.0;
 897         rgba.blue = color->blue / 65535.0;
 898         rgba.alpha = 1.0;
 899
 900         gtk_color_button_set_rgba (button, &rgba);
 901       }
 902       break;
 903     case PROP_ALPHA:
 904       gtk_color_button_set_alpha (button, g_value_get_uint (value));
 905       break;
 906     case PROP_RGBA:
 907       gtk_color_button_set_rgba (button, g_value_get_boxed (value));
 908       break;
 909     default:
 910       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 911       break;
 912     }
 913 }
 914
 915 static void
 916 gtk_color_button_get_property (GObject    *object,
 917                                guint       param_id,
 918                                GValue     *value,
 919                                GParamSpec *pspec)
 920 {
 921   GtkColorButton *button = GTK_COLOR_BUTTON (object);
 922
 923   switch (param_id)
 924     {
 925     case PROP_USE_ALPHA:
 926       g_value_set_boolean (value, gtk_color_button_get_use_alpha (button));
 927       break;
 928     case PROP_TITLE:
 929       g_value_set_string (value, gtk_color_button_get_title (button));
 930       break;
 931     case PROP_COLOR:
 932       {
 933         GdkColor color;
 934         GdkRGBA rgba;
 935
 936         gtk_color_button_get_rgba (button, &rgba);
 937
 938         color.red = (guint16) (rgba.red * 65535 + 0.5);
 939         color.green = (guint16) (rgba.green * 65535 + 0.5);
 940         color.blue = (guint16) (rgba.blue * 65535 + 0.5);
 941
 942         g_value_set_boxed (value, &color);
 943       }
 944       break;
 945     case PROP_ALPHA:
 946       g_value_set_uint (value, gtk_color_button_get_alpha (button));
 947       break;
 948     case PROP_RGBA:
 949       {
 950         GdkRGBA rgba;
 951
 952         gtk_color_button_get_rgba (button, &rgba);
 953         g_value_set_boxed (value, &rgba);
 954       }
 955       break;
 956     default:
 957       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 958       break;
 959     }
 960 }
 961
 962 static void
 963 gtk_color_button_add_palette (GtkColorChooser *chooser,
 964                               GtkOrientation   orientation,
 965                               gint             colors_per_line,
 966                               gint             n_colors,
 967                               GdkRGBA         *colors)
 968 {
 969   GtkColorButton *button = GTK_COLOR_BUTTON (chooser);
 970
 971   ensure_dialog (button);
 972
 973   gtk_color_chooser_add_palette (GTK_COLOR_CHOOSER (button->priv->cs_dialog),
 974                                    orientation, colors_per_line, n_colors, colors);
 975 }
 976
 977 typedef void (* get_rgba) (GtkColorChooser *, GdkRGBA *);
 978 typedef void (* set_rgba) (GtkColorChooser *, const GdkRGBA *);
 979
 980 static void
 981 gtk_color_button_iface_init (GtkColorChooserInterface *iface)
 982 {
 983   iface->get_rgba = (get_rgba)gtk_color_button_get_rgba;
 984   iface->set_rgba = (set_rgba)gtk_color_button_set_rgba;
 985   iface->add_palette = gtk_color_button_add_palette;
 986 }
 987