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