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 the Gnome Library; see the file COPYING.LIB.  If not,
  18  * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21 /* Color picker button for GNOME
  22  *
  23  * Author: Federico Mena <federico@nuclecu.unam.mx>
  24  *
  25  * Modified by the GTK+ Team and others 2003.  See the AUTHORS
  26  * file for a list of people on the GTK+ Team.  See the ChangeLog
  27  * files for a list of changes.  These files are distributed with
  28  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  29  */
  30
  31 #define GDK_DISABLE_DEPRECATION_WARNINGS
  32 #include "config.h"
  33
  34 #include "gtkcolorbutton.h"
  35
  36 #include "gtkbutton.h"
  37 #include "gtkmain.h"
  38 #include "gtkalignment.h"
  39 #include "gtkcolorchooser.h"
  40 #include "gtkcolorchooserdialog.h"
  41 #include "gtkdnd.h"
  42 #include "gtkdrawingarea.h"
  43 #include "gtkframe.h"
  44 #include "gtkmarshalers.h"
  45 #include "gtkprivate.h"
  46 #include "gtkintl.h"
  47
  48
  49 /**
  50  * SECTION:gtkcolorbutton
  51  * @Short_description: A button to launch a color selection dialog
  52  * @Title: GtkColorButton
  53  * @See_also: #GtkColorSelectionDialog, #GtkFontButton
  54  *
  55  * The #GtkColorButton is a button which displays the currently selected
  56  * color an allows to open a color selection dialog to change the color.
  57  * It is suitable widget for selecting a color in a preference dialog.
  58  */
  59
  60
  61 /* Size of checks and gray levels for alpha compositing checkerboard */
  62 #define CHECK_SIZE  4
  63 #define CHECK_DARK  (1.0 / 3.0)
  64 #define CHECK_LIGHT (2.0 / 3.0)
  65
  66
  67 struct _GtkColorButtonPrivate
  68 {
  69   GtkWidget *draw_area; /* Widget where we draw the color sample */
  70   GtkWidget *cs_dialog; /* Color selection dialog */
  71
  72   gchar *title;         /* Title for the color selection window */
  73   GdkRGBA rgba;
  74
  75   guint use_alpha : 1;  /* Use alpha or not */
  76 };
  77
  78 /* Properties */
  79 enum
  80 {
  81   PROP_0,
  82   PROP_USE_ALPHA,
  83   PROP_TITLE,
  84   PROP_COLOR,
  85   PROP_ALPHA,
  86   PROP_RGBA
  87 };
  88
  89 /* Signals */
  90 enum
  91 {
  92   COLOR_SET,
  93   LAST_SIGNAL
  94 };
  95
  96 /* gobject signals */
  97 static void gtk_color_button_finalize      (GObject             *object);
  98 static void gtk_color_button_set_property  (GObject        *object,
  99                                             guint           param_id,
 100                                             const GValue   *value,
 101                                             GParamSpec     *pspec);
 102 static void gtk_color_button_get_property  (GObject        *object,
 103                                             guint           param_id,
 104                                             GValue         *value,
 105                                             GParamSpec     *pspec);
 106
 107 /* gtkwidget signals */
 108 static void gtk_color_button_state_changed (GtkWidget           *widget,
 109                                             GtkStateType         previous_state);
 110
 111 /* gtkbutton signals */
 112 static void gtk_color_button_clicked       (GtkButton           *button);
 113
 114 /* source side drag signals */
 115 static void gtk_color_button_drag_begin (GtkWidget        *widget,
 116                                          GdkDragContext   *context,
 117                                          gpointer          data);
 118 static void gtk_color_button_drag_data_get (GtkWidget        *widget,
 119                                             GdkDragContext   *context,
 120                                             GtkSelectionData *selection_data,
 121                                             guint             info,
 122                                             guint             time,
 123                                             GtkColorButton   *button);
 124
 125 /* target side drag signals */
 126 static void gtk_color_button_drag_data_received (GtkWidget        *widget,
 127                                                  GdkDragContext   *context,
 128                                                  gint              x,
 129                                                  gint              y,
 130                                                  GtkSelectionData *selection_data,
 131                                                  guint             info,
 132                                                  guint32           time,
 133                                                  GtkColorButton   *button);
 134
 135
 136 static guint color_button_signals[LAST_SIGNAL] = { 0 };
 137
 138 static const GtkTargetEntry drop_types[] = { { "application/x-color", 0, 0 } };
 139
 140 static void gtk_color_button_iface_init (GtkColorChooserInterface *iface);
 141
 142 G_DEFINE_TYPE_WITH_CODE (GtkColorButton, gtk_color_button, GTK_TYPE_BUTTON,
 143                          G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_CHOOSER,
 144                                                 gtk_color_button_iface_init))
 145
 146 static void
 147 gtk_color_button_class_init (GtkColorButtonClass *klass)
 148 {
 149   GObjectClass *gobject_class;
 150   GtkWidgetClass *widget_class;
 151   GtkButtonClass *button_class;
 152
 153   gobject_class = G_OBJECT_CLASS (klass);
 154   widget_class = GTK_WIDGET_CLASS (klass);
 155   button_class = GTK_BUTTON_CLASS (klass);
 156
 157   gobject_class->get_property = gtk_color_button_get_property;
 158   gobject_class->set_property = gtk_color_button_set_property;
 159   gobject_class->finalize = gtk_color_button_finalize;
 160   widget_class->state_changed = gtk_color_button_state_changed;
 161   button_class->clicked = gtk_color_button_clicked;
 162   klass->color_set = NULL;
 163
 164   /**
 165    * GtkColorButton:use-alpha:
 166    *
 167    * If this property is set to %TRUE, the color swatch on the button is
 168    * rendered against a checkerboard background to show its opacity and
 169    * the opacity slider is displayed in the color selection dialog.
 170    *
 171    * Since: 2.4
 172    */
 173   g_object_class_install_property (gobject_class,
 174                                    PROP_USE_ALPHA,
 175                                    g_param_spec_boolean ("use-alpha", P_("Use alpha"),
 176                                                          P_("Whether to give the color an alpha value"),
 177                                                          FALSE,
 178                                                          GTK_PARAM_READWRITE));
 179
 180   /**
 181    * GtkColorButton:title:
 182    *
 183    * The title of the color selection dialog
 184    *
 185    * Since: 2.4
 186    */
 187   g_object_class_install_property (gobject_class,
 188                                    PROP_TITLE,
 189                                    g_param_spec_string ("title",
 190                                                         P_("Title"),
 191                                                         P_("The title of the color selection dialog"),
 192                                                         _("Pick a Color"),
 193                                                         GTK_PARAM_READWRITE));
 194
 195   /**
 196    * GtkColorButton:color:
 197    *
 198    * The selected color.
 199    *
 200    * Since: 2.4
 201    *
 202    * Deprecated: 3.4: Use #GtkColorButton:rgba instead.
 203    */
 204   g_object_class_install_property (gobject_class,
 205                                    PROP_COLOR,
 206                                    g_param_spec_boxed ("color",
 207                                                        P_("Current Color"),
 208                                                        P_("The selected color"),
 209                                                        GDK_TYPE_COLOR,
 210                                                        GTK_PARAM_READWRITE | G_PARAM_DEPRECATED));
 211
 212   /**
 213    * GtkColorButton:alpha:
 214    *
 215    * The selected opacity value (0 fully transparent, 65535 fully opaque).
 216    *
 217    * Since: 2.4
 218    */
 219   g_object_class_install_property (gobject_class,
 220                                    PROP_ALPHA,
 221                                    g_param_spec_uint ("alpha",
 222                                                       P_("Current Alpha"),
 223                                                       P_("The selected opacity value (0 fully transparent, 65535 fully opaque)"),
 224                                                       0, 65535, 65535,
 225                                                       GTK_PARAM_READWRITE));
 226
 227   /**
 228    * GtkColorButton:rgba:
 229    *
 230    * The RGBA color.
 231    *
 232    * Since: 3.0
 233    */
 234   g_object_class_install_property (gobject_class,
 235                                    PROP_RGBA,
 236                                    g_param_spec_boxed ("rgba",
 237                                                        P_("Current RGBA Color"),
 238                                                        P_("The selected RGBA color"),
 239                                                        GDK_TYPE_RGBA,
 240                                                        GTK_PARAM_READWRITE));
 241
 242
 243   /**
 244    * GtkColorButton::color-set:
 245    * @widget: the object which received the signal.
 246    *
 247    * The ::color-set signal is emitted when the user selects a color.
 248    * When handling this signal, use gtk_color_button_get_color() and
 249    * gtk_color_button_get_alpha() (or gtk_color_button_get_rgba()) to
 250    * find out which color was just selected.
 251    *
 252    * Note that this signal is only emitted when the <emphasis>user</emphasis>
 253    * changes the color. If you need to react to programmatic color changes
 254    * as well, use the notify::color signal.
 255    *
 256    * Since: 2.4
 257    */
 258   color_button_signals[COLOR_SET] = g_signal_new (I_("color-set"),
 259                                                   G_TYPE_FROM_CLASS (gobject_class),
 260                                                   G_SIGNAL_RUN_FIRST,
 261                                                   G_STRUCT_OFFSET (GtkColorButtonClass, color_set),
 262                                                   NULL, NULL,
 263                                                   _gtk_marshal_VOID__VOID,
 264                                                   G_TYPE_NONE, 0);
 265
 266   g_type_class_add_private (gobject_class, sizeof (GtkColorButtonPrivate));
 267 }
 268
 269 static gboolean
 270 gtk_color_button_has_alpha (GtkColorButton *button)
 271 {
 272   return button->priv->use_alpha && button->priv->rgba.alpha < 1;
 273 }
 274
 275 static cairo_pattern_t *
 276 gtk_color_button_get_checkered (void)
 277 {
 278   /* need to respect pixman's stride being a multiple of 4 */
 279   static unsigned char data[8] = { 0xFF, 0x00, 0x00, 0x00,
 280                                    0x00, 0xFF, 0x00, 0x00 };
 281   static cairo_surface_t *checkered = NULL;
 282   cairo_pattern_t *pattern;
 283
 284   if (checkered == NULL)
 285     {
 286       checkered = cairo_image_surface_create_for_data (data,
 287                                                        CAIRO_FORMAT_A8,
 288                                                        2, 2, 4);
 289     }
 290
 291   pattern = cairo_pattern_create_for_surface (checkered);
 292   cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
 293   cairo_pattern_set_filter (pattern, CAIRO_FILTER_NEAREST);
 294
 295   return pattern;
 296 }
 297
 298 /* Handle exposure events for the color picker's drawing area */
 299 static gint
 300 gtk_color_button_draw_cb (GtkWidget *widget,
 301                           cairo_t   *cr,
 302                           gpointer   data)
 303 {
 304   GtkColorButton *button = GTK_COLOR_BUTTON (data);
 305   cairo_pattern_t *checkered;
 306
 307   if (gtk_color_button_has_alpha (button))
 308     {
 309       cairo_set_source_rgb (cr, CHECK_DARK, CHECK_DARK, CHECK_DARK);
 310       cairo_paint (cr);
 311
 312       cairo_set_source_rgb (cr, CHECK_LIGHT, CHECK_LIGHT, CHECK_LIGHT);
 313       cairo_scale (cr, CHECK_SIZE, CHECK_SIZE);
 314
 315       checkered = gtk_color_button_get_checkered ();
 316       cairo_mask (cr, checkered);
 317       cairo_pattern_destroy (checkered);
 318
 319       gdk_cairo_set_source_rgba (cr, &button->priv->rgba);
 320     }
 321   else
 322     {
 323       cairo_set_source_rgb (cr,
 324                             button->priv->rgba.red,
 325                             button->priv->rgba.green,
 326                             button->priv->rgba.blue);
 327     }
 328
 329   cairo_paint (cr);
 330
 331   if (!gtk_widget_is_sensitive (GTK_WIDGET (button)))
 332     {
 333       GtkStyleContext *context;
 334       GdkRGBA color;
 335
 336       context = gtk_widget_get_style_context (widget);
 337       gtk_style_context_get_background_color (context, GTK_STATE_FLAG_INSENSITIVE, &color);
 338
 339       gdk_cairo_set_source_rgba (cr, &color);
 340       checkered = gtk_color_button_get_checkered ();
 341       cairo_mask (cr, checkered);
 342       cairo_pattern_destroy (checkered);
 343     }
 344
 345   return FALSE;
 346 }
 347
 348 static void
 349 gtk_color_button_state_changed (GtkWidget   *widget,
 350                                 GtkStateType previous_state)
 351 {
 352   gtk_widget_queue_draw (widget);
 353 }
 354
 355 static void
 356 gtk_color_button_drag_data_received (GtkWidget        *widget,
 357                                      GdkDragContext   *context,
 358                                      gint              x,
 359                                      gint              y,
 360                                      GtkSelectionData *selection_data,
 361                                      guint             info,
 362                                      guint32           time,
 363                                      GtkColorButton   *button)
 364 {
 365   gint length;
 366   guint16 *dropped;
 367
 368   length = gtk_selection_data_get_length (selection_data);
 369
 370   if (length < 0)
 371     return;
 372
 373   /* We accept drops with the wrong format, since the KDE color
 374    * chooser incorrectly drops application/x-color with format 8.
 375    */
 376   if (length != 8)
 377     {
 378       g_warning ("%s: Received invalid color data", G_STRFUNC);
 379       return;
 380     }
 381
 382
 383   dropped = (guint16 *) gtk_selection_data_get_data (selection_data);
 384
 385   button->priv->rgba.red = dropped[0] / 65535.;
 386   button->priv->rgba.green = dropped[1] / 65535.;
 387   button->priv->rgba.blue = dropped[2] / 65535.;
 388   button->priv->rgba.alpha = dropped[3] / 65535.;
 389
 390   gtk_widget_queue_draw (button->priv->draw_area);
 391
 392   g_signal_emit (button, color_button_signals[COLOR_SET], 0);
 393
 394   g_object_freeze_notify (G_OBJECT (button));
 395   g_object_notify (G_OBJECT (button), "color");
 396   g_object_notify (G_OBJECT (button), "alpha");
 397   g_object_notify (G_OBJECT (button), "rgba");
 398   g_object_thaw_notify (G_OBJECT (button));
 399 }
 400
 401 static void
 402 set_color_icon (GdkDragContext *context,
 403                 GdkRGBA        *rgba)
 404 {
 405   cairo_surface_t *surface;
 406   cairo_t *cr;
 407
 408   surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
 409                                         48, 32);
 410   cr = cairo_create (surface);
 411
 412   gdk_cairo_set_source_rgba (cr, rgba);
 413   cairo_paint (cr);
 414
 415   gtk_drag_set_icon_surface (context, surface);
 416
 417   cairo_destroy (cr);
 418   cairo_surface_destroy (surface);
 419 }
 420
 421 static void
 422 gtk_color_button_drag_begin (GtkWidget      *widget,
 423                              GdkDragContext *context,
 424                              gpointer        data)
 425 {
 426   GtkColorButton *button = data;
 427
 428   set_color_icon (context, &button->priv->rgba);
 429 }
 430
 431 static void
 432 gtk_color_button_drag_data_get (GtkWidget        *widget,
 433                                 GdkDragContext   *context,
 434                                 GtkSelectionData *selection_data,
 435                                 guint             info,
 436                                 guint             time,
 437                                 GtkColorButton   *button)
 438 {
 439   guint16 dropped[4];
 440
 441   dropped[0] = (guint16) (button->priv->rgba.red * 65535);
 442   dropped[1] = (guint16) (button->priv->rgba.green * 65535);
 443   dropped[2] = (guint16) (button->priv->rgba.blue * 65535);
 444   dropped[3] = (guint16) (button->priv->rgba.alpha * 65535);
 445
 446   gtk_selection_data_set (selection_data,
 447                           gtk_selection_data_get_target (selection_data),
 448                           16, (guchar *)dropped, 8);
 449 }
 450
 451 static void
 452 gtk_color_button_init (GtkColorButton *button)
 453 {
 454   GtkWidget *alignment;
 455   GtkWidget *frame;
 456   PangoLayout *layout;
 457   PangoRectangle rect;
 458
 459   /* Create the widgets */
 460   button->priv = G_TYPE_INSTANCE_GET_PRIVATE (button,
 461                                               GTK_TYPE_COLOR_BUTTON,
 462                                               GtkColorButtonPrivate);
 463
 464   gtk_widget_push_composite_child ();
 465
 466   alignment = gtk_alignment_new (0.5, 0.5, 0.5, 1.0);
 467   gtk_container_set_border_width (GTK_CONTAINER (alignment), 1);
 468   gtk_container_add (GTK_CONTAINER (button), alignment);
 469   gtk_widget_show (alignment);
 470
 471   frame = gtk_frame_new (NULL);
 472   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_OUT);
 473   gtk_container_add (GTK_CONTAINER (alignment), frame);
 474   gtk_widget_show (frame);
 475
 476   /* Just some widget we can hook to expose-event on */
 477   button->priv->draw_area = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
 478
 479   layout = gtk_widget_create_pango_layout (GTK_WIDGET (button), "Black");
 480   pango_layout_get_pixel_extents (layout, NULL, &rect);
 481   g_object_unref (layout);
 482
 483   gtk_widget_set_size_request (button->priv->draw_area, rect.width - 2, rect.height - 2);
 484   g_signal_connect (button->priv->draw_area, "draw",
 485                     G_CALLBACK (gtk_color_button_draw_cb), button);
 486   gtk_container_add (GTK_CONTAINER (frame), button->priv->draw_area);
 487   gtk_widget_show (button->priv->draw_area);
 488
 489   button->priv->title = g_strdup (_("Pick a Color")); /* default title */
 490
 491   /* Start with opaque black, alpha disabled */
 492   button->priv->rgba.red = 0;
 493   button->priv->rgba.green = 0;
 494   button->priv->rgba.blue = 0;
 495   button->priv->rgba.alpha = 1;
 496   button->priv->use_alpha = FALSE;
 497
 498   gtk_drag_dest_set (GTK_WIDGET (button),
 499                      GTK_DEST_DEFAULT_MOTION |
 500                      GTK_DEST_DEFAULT_HIGHLIGHT |
 501                      GTK_DEST_DEFAULT_DROP,
 502                      drop_types, 1, GDK_ACTION_COPY);
 503   gtk_drag_source_set (GTK_WIDGET (button),
 504                        GDK_BUTTON1_MASK|GDK_BUTTON3_MASK,
 505                        drop_types, 1,
 506                        GDK_ACTION_COPY);
 507   g_signal_connect (button, "drag-begin",
 508                     G_CALLBACK (gtk_color_button_drag_begin), button);
 509   g_signal_connect (button, "drag-data-received",
 510                     G_CALLBACK (gtk_color_button_drag_data_received), button);
 511   g_signal_connect (button, "drag-data-get",
 512                     G_CALLBACK (gtk_color_button_drag_data_get), button);
 513
 514   gtk_widget_pop_composite_child ();
 515 }
 516
 517 static void
 518 gtk_color_button_finalize (GObject *object)
 519 {
 520   GtkColorButton *button = GTK_COLOR_BUTTON (object);
 521
 522   if (button->priv->cs_dialog != NULL)
 523     gtk_widget_destroy (button->priv->cs_dialog);
 524   button->priv->cs_dialog = NULL;
 525
 526   g_free (button->priv->title);
 527   button->priv->title = NULL;
 528
 529   G_OBJECT_CLASS (gtk_color_button_parent_class)->finalize (object);
 530 }
 531
 532
 533 /**
 534  * gtk_color_button_new:
 535  *
 536  * Creates a new color button.
 537  *
 538  * This returns a widget in the form of a small button containing
 539  * a swatch representing the current selected color. When the button
 540  * is clicked, a color-selection dialog will open, allowing the user
 541  * to select a color. The swatch will be updated to reflect the new
 542  * color when the user finishes.
 543  *
 544  * Returns: a new color button
 545  *
 546  * Since: 2.4
 547  */
 548 GtkWidget *
 549 gtk_color_button_new (void)
 550 {
 551   return g_object_new (GTK_TYPE_COLOR_BUTTON, NULL);
 552 }
 553
 554 /**
 555  * gtk_color_button_new_with_color:
 556  * @color: A #GdkColor to set the current color with
 557  *
 558  * Creates a new color button.
 559  *
 560  * Returns: a new color button
 561  *
 562  * Since: 2.4
 563  *
 564  * Deprecated: 3.4: Use gtk_color_button_new_with_rgba() instead.
 565  */
 566 GtkWidget *
 567 gtk_color_button_new_with_color (const GdkColor *color)
 568 {
 569   return g_object_new (GTK_TYPE_COLOR_BUTTON, "color", color, NULL);
 570 }
 571
 572 /**
 573  * gtk_color_button_new_with_rgba:
 574  * @rgba: A #GdkRGBA to set the current color with
 575  *
 576  * Creates a new color button.
 577  *
 578  * Returns: a new color button
 579  *
 580  * Since: 3.0
 581  */
 582 GtkWidget *
 583 gtk_color_button_new_with_rgba (const GdkRGBA *rgba)
 584 {
 585   return g_object_new (GTK_TYPE_COLOR_BUTTON, "rgba", rgba, NULL);
 586 }
 587
 588 static gboolean
 589 dialog_destroy (GtkWidget *widget,
 590                 gpointer   data)
 591 {
 592   GtkColorButton *button = GTK_COLOR_BUTTON (data);
 593
 594   button->priv->cs_dialog = NULL;
 595
 596   return FALSE;
 597 }
 598
 599 static void
 600 dialog_response (GtkDialog *dialog,
 601                  gint       response,
 602                  gpointer   data)
 603 {
 604   if (response == GTK_RESPONSE_CANCEL)
 605     gtk_widget_hide (GTK_WIDGET (dialog));
 606   else if (response == GTK_RESPONSE_OK)
 607     {
 608       GtkColorButton *button = GTK_COLOR_BUTTON (data);
 609
 610       gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (dialog),
 611                                   &button->priv->rgba);
 612
 613       gtk_widget_hide (GTK_WIDGET (dialog));
 614
 615       gtk_widget_queue_draw (button->priv->draw_area);
 616
 617       g_signal_emit (button, color_button_signals[COLOR_SET], 0);
 618
 619       g_object_freeze_notify (G_OBJECT (button));
 620       g_object_notify (G_OBJECT (button), "color");
 621       g_object_notify (G_OBJECT (button), "alpha");
 622       g_object_notify (G_OBJECT (button), "rgba");
 623       g_object_thaw_notify (G_OBJECT (button));
 624     }
 625 }
 626
 627 static void
 628 gtk_color_button_clicked (GtkButton *b)
 629 {
 630   GtkColorButton *button = GTK_COLOR_BUTTON (b);
 631   GtkWidget *dialog;
 632
 633   /* if dialog already exists, make sure it's shown and raised */
 634   if (!button->priv->cs_dialog)
 635     {
 636       /* Create the dialog and connects its buttons */
 637       GtkWidget *parent;
 638
 639       parent = gtk_widget_get_toplevel (GTK_WIDGET (button));
 640
 641       button->priv->cs_dialog = dialog = gtk_color_chooser_dialog_new (button->priv->title, NULL);
 642
 643       if (gtk_widget_is_toplevel (parent) && GTK_IS_WINDOW (parent))
 644         {
 645           if (GTK_WINDOW (parent) != gtk_window_get_transient_for (GTK_WINDOW (dialog)))
 646             gtk_window_set_transient_for (GTK_WINDOW (dialog), GTK_WINDOW (parent));
 647
 648           gtk_window_set_modal (GTK_WINDOW (dialog),
 649                                 gtk_window_get_modal (GTK_WINDOW (parent)));
 650         }
 651
 652       g_signal_connect (dialog, "response",
 653                         G_CALLBACK (dialog_response), button);
 654       g_signal_connect (dialog, "destroy",
 655                         G_CALLBACK (dialog_destroy), button);
 656     }
 657
 658   gtk_color_chooser_set_use_alpha (GTK_COLOR_CHOOSER (button->priv->cs_dialog),
 659                                    button->priv->use_alpha);
 660
 661   gtk_window_present (GTK_WINDOW (button->priv->cs_dialog));
 662 }
 663
 664 /**
 665  * gtk_color_button_set_color:
 666  * @button: a #GtkColorButton
 667  * @color: A #GdkColor to set the current color with
 668  *
 669  * Sets the current color to be @color.
 670  *
 671  * Since: 2.4
 672  *
 673  * Deprecated: Use gtk_color_chooser_set_rgba() instead.
 674  */
 675 void
 676 gtk_color_button_set_color (GtkColorButton *button,
 677                             const GdkColor *color)
 678 {
 679   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 680   g_return_if_fail (color != NULL);
 681
 682   button->priv->rgba.red = color->red / 65535.;
 683   button->priv->rgba.green = color->green / 65535.;
 684   button->priv->rgba.blue = color->blue / 65535.;
 685
 686   gtk_widget_queue_draw (button->priv->draw_area);
 687
 688   g_object_notify (G_OBJECT (button), "color");
 689   g_object_notify (G_OBJECT (button), "rgba");
 690 }
 691
 692
 693 /**
 694  * gtk_color_button_set_alpha:
 695  * @button: a #GtkColorButton
 696  * @alpha: an integer between 0 and 65535
 697  *
 698  * Sets the current opacity to be @alpha.
 699  *
 700  * Since: 2.4
 701  *
 702  * Deprecated: 3.4: Use gtk_color_chooser_set_rgba() instead.
 703  */
 704 void
 705 gtk_color_button_set_alpha (GtkColorButton *button,
 706                             guint16         alpha)
 707 {
 708   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 709
 710   button->priv->rgba.alpha = alpha / 65535.;
 711
 712   gtk_widget_queue_draw (button->priv->draw_area);
 713
 714   g_object_notify (G_OBJECT (button), "alpha");
 715   g_object_notify (G_OBJECT (button), "rgba");
 716 }
 717
 718 /**
 719  * gtk_color_button_get_color:
 720  * @button: a #GtkColorButton
 721  * @color: (out): a #GdkColor to fill in with the current color
 722  *
 723  * Sets @color to be the current color in the #GtkColorButton widget.
 724  *
 725  * Since: 2.4
 726  *
 727  * Deprecated: 3.4: Use gtk_color_chooser_get_rgba() instead.
 728  */
 729 void
 730 gtk_color_button_get_color (GtkColorButton *button,
 731                             GdkColor       *color)
 732 {
 733   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 734
 735   color->red = (guint16) (button->priv->rgba.red * 65535);
 736   color->green = (guint16) (button->priv->rgba.green * 65535);
 737   color->blue = (guint16) (button->priv->rgba.blue * 65535);
 738 }
 739
 740 /**
 741  * gtk_color_button_get_alpha:
 742  * @button: a #GtkColorButton
 743  *
 744  * Returns the current alpha value.
 745  *
 746  * Return value: an integer between 0 and 65535
 747  *
 748  * Since: 2.4
 749  *
 750  * Deprecated: 3.4: Use gtk_color_chooser_get_rgba() instead.
 751  */
 752 guint16
 753 gtk_color_button_get_alpha (GtkColorButton *button)
 754 {
 755   g_return_val_if_fail (GTK_IS_COLOR_BUTTON (button), 0);
 756
 757   return (guint16) (button->priv->rgba.alpha * 65535);
 758 }
 759
 760 /**
 761  * gtk_color_button_set_rgba:
 762  * @button: a #GtkColorButton
 763  * @rgba: a #GdkRGBA to set the current color with
 764  *
 765  * Sets the current color to be @rgba.
 766  *
 767  * Since: 3.0
 768  *
 769  * Deprecated: 3.4: Use gtk_color_chooser_set_rgba() instead.
 770  */
 771 void
 772 gtk_color_button_set_rgba (GtkColorButton *button,
 773                            const GdkRGBA  *rgba)
 774 {
 775   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 776   g_return_if_fail (rgba != NULL);
 777
 778   button->priv->rgba = *rgba;
 779   gtk_widget_queue_draw (button->priv->draw_area);
 780
 781   g_object_notify (G_OBJECT (button), "color");
 782   g_object_notify (G_OBJECT (button), "alpha");
 783   g_object_notify (G_OBJECT (button), "rgba");
 784 }
 785
 786 /**
 787  * gtk_color_button_get_rgba:
 788  * @button: a #GtkColorButton
 789  * @rgba: (out): a #GdkRGBA to fill in with the current color
 790  *
 791  * Sets @rgba to be the current color in the #GtkColorButton widget.
 792  *
 793  * Since: 3.0
 794  *
 795  * Deprecated: 3.4: Use gtk_color_chooser_get_rgba() instead.
 796  */
 797 void
 798 gtk_color_button_get_rgba (GtkColorButton *button,
 799                            GdkRGBA        *rgba)
 800 {
 801   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 802   g_return_if_fail (rgba != NULL);
 803
 804   *rgba = button->priv->rgba;
 805 }
 806
 807 /**
 808  * gtk_color_button_set_use_alpha:
 809  * @button: a #GtkColorButton
 810  * @use_alpha: %TRUE if color button should use alpha channel, %FALSE if not
 811  *
 812  * Sets whether or not the color button should use the alpha channel.
 813  *
 814  * Since: 2.4
 815  *
 816  * Deprecated: 3.4: Use gtk_color_chooser_set_use_alpha() instead.
 817  */
 818 void
 819 gtk_color_button_set_use_alpha (GtkColorButton *button,
 820                                 gboolean        use_alpha)
 821 {
 822   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 823
 824   use_alpha = (use_alpha != FALSE);
 825
 826   if (button->priv->use_alpha != use_alpha)
 827     {
 828       button->priv->use_alpha = use_alpha;
 829
 830       gtk_widget_queue_draw (button->priv->draw_area);
 831
 832       g_object_notify (G_OBJECT (button), "use-alpha");
 833     }
 834 }
 835
 836 /**
 837  * gtk_color_button_get_use_alpha:
 838  * @button: a #GtkColorButton
 839  *
 840  * Does the color selection dialog use the alpha channel ?
 841  *
 842  * Returns: %TRUE if the color sample uses alpha channel, %FALSE if not
 843  *
 844  * Since: 2.4
 845  *
 846  * Deprecated: 3.4: Use gtk_color_chooser_get_use_alpha() instead.
 847  */
 848 gboolean
 849 gtk_color_button_get_use_alpha (GtkColorButton *button)
 850 {
 851   g_return_val_if_fail (GTK_IS_COLOR_BUTTON (button), FALSE);
 852
 853   return button->priv->use_alpha;
 854 }
 855
 856
 857 /**
 858  * gtk_color_button_set_title:
 859  * @button: a #GtkColorButton
 860  * @title: String containing new window title
 861  *
 862  * Sets the title for the color selection dialog.
 863  *
 864  * Since: 2.4
 865  */
 866 void
 867 gtk_color_button_set_title (GtkColorButton *button,
 868                             const gchar    *title)
 869 {
 870   gchar *old_title;
 871
 872   g_return_if_fail (GTK_IS_COLOR_BUTTON (button));
 873
 874   old_title = button->priv->title;
 875   button->priv->title = g_strdup (title);
 876   g_free (old_title);
 877
 878   if (button->priv->cs_dialog)
 879     gtk_window_set_title (GTK_WINDOW (button->priv->cs_dialog),
 880                           button->priv->title);
 881
 882   g_object_notify (G_OBJECT (button), "title");
 883 }
 884
 885 /**
 886  * gtk_color_button_get_title:
 887  * @button: a #GtkColorButton
 888  *
 889  * Gets the title of the color selection dialog.
 890  *
 891  * Returns: An internal string, do not free the return value
 892  *
 893  * Since: 2.4
 894  */
 895 const gchar *
 896 gtk_color_button_get_title (GtkColorButton *button)
 897 {
 898   g_return_val_if_fail (GTK_IS_COLOR_BUTTON (button), NULL);
 899
 900   return button->priv->title;
 901 }
 902
 903 static void
 904 gtk_color_button_set_property (GObject      *object,
 905                                guint         param_id,
 906                                const GValue *value,
 907                                GParamSpec   *pspec)
 908 {
 909   GtkColorButton *button = GTK_COLOR_BUTTON (object);
 910
 911   switch (param_id)
 912     {
 913     case PROP_USE_ALPHA:
 914       gtk_color_button_set_use_alpha (button, g_value_get_boolean (value));
 915       break;
 916     case PROP_TITLE:
 917       gtk_color_button_set_title (button, g_value_get_string (value));
 918       break;
 919     case PROP_COLOR:
 920       {
 921         GdkColor *color;
 922         GdkRGBA rgba;
 923
 924         color = g_value_get_boxed (value);
 925
 926         rgba.red = color->red / 65535.0;
 927         rgba.green = color->green / 65535.0;
 928         rgba.blue = color->blue / 65535.0;
 929         rgba.alpha = 1.0;
 930
 931         gtk_color_button_set_rgba (button, &rgba);
 932       }
 933       break;
 934     case PROP_ALPHA:
 935       gtk_color_button_set_alpha (button, g_value_get_uint (value));
 936       break;
 937     case PROP_RGBA:
 938       gtk_color_button_set_rgba (button, g_value_get_boxed (value));
 939       break;
 940     default:
 941       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 942       break;
 943     }
 944 }
 945
 946 static void
 947 gtk_color_button_get_property (GObject    *object,
 948                                guint       param_id,
 949                                GValue     *value,
 950                                GParamSpec *pspec)
 951 {
 952   GtkColorButton *button = GTK_COLOR_BUTTON (object);
 953
 954   switch (param_id)
 955     {
 956     case PROP_USE_ALPHA:
 957       g_value_set_boolean (value, gtk_color_button_get_use_alpha (button));
 958       break;
 959     case PROP_TITLE:
 960       g_value_set_string (value, gtk_color_button_get_title (button));
 961       break;
 962     case PROP_COLOR:
 963       {
 964         GdkColor color;
 965         GdkRGBA rgba;
 966
 967         gtk_color_button_get_rgba (button, &rgba);
 968
 969         color.red = (guint16) (rgba.red * 65535 + 0.5);
 970         color.green = (guint16) (rgba.green * 65535 + 0.5);
 971         color.blue = (guint16) (rgba.blue * 65535 + 0.5);
 972
 973         g_value_set_boxed (value, &color);
 974       }
 975       break;
 976     case PROP_ALPHA:
 977       g_value_set_uint (value, gtk_color_button_get_alpha (button));
 978       break;
 979     case PROP_RGBA:
 980       {
 981         GdkRGBA rgba;
 982
 983         gtk_color_button_get_rgba (button, &rgba);
 984         g_value_set_boxed (value, &rgba);
 985       }
 986       break;
 987     default:
 988       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 989       break;
 990     }
 991 }
 992
 993 static void
 994 gtk_color_button_add_palette (GtkColorChooser *chooser,
 995                               gboolean         horizontal,
 996                               gint             colors_per_line,
 997                               gint             n_colors,
 998                               GdkRGBA         *colors)
 999 {
1000   GtkColorButton *button = GTK_COLOR_BUTTON (chooser);
1001
1002   if (button->priv->cs_dialog)
1003     gtk_color_chooser_add_palette (GTK_COLOR_CHOOSER (button->priv->cs_dialog),
1004                                    horizontal, colors_per_line, n_colors, colors);
1005 }
1006
1007 typedef void (* get_rgba) (GtkColorChooser *, GdkRGBA *);
1008 typedef void (* set_rgba) (GtkColorChooser *, const GdkRGBA *);
1009
1010 static void
1011 gtk_color_button_iface_init (GtkColorChooserInterface *iface)
1012 {
1013   iface->get_rgba = (get_rgba)gtk_color_button_get_rgba;
1014   iface->set_rgba = (set_rgba)gtk_color_button_set_rgba;
1015   iface->add_palette = gtk_color_button_add_palette;
1016 }
1017