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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 2000 Red Hat, Inc.
   3  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2001.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include "config.h"
  29
  30 #include "gtkcolorsel.h"
  31
  32 #include <math.h>
  33 #include <string.h>
  34
  35 #include "gdk/gdk.h"
  36 #include "gtkhsv.h"
  37 #include "gtkwindow.h"
  38 #include "gtkselection.h"
  39 #include "gtkdnd.h"
  40 #include "gtkdrawingarea.h"
  41 #include "gtkhbox.h"
  42 #include "gtkhbbox.h"
  43 #include "gtkrc.h"
  44 #include "gtkframe.h"
  45 #include "gtktable.h"
  46 #include "gtklabel.h"
  47 #include "gtkmarshalers.h"
  48 #include "gtkimage.h"
  49 #include "gtkspinbutton.h"
  50 #include "gtkrange.h"
  51 #include "gtkhscale.h"
  52 #include "gtkentry.h"
  53 #include "gtkbutton.h"
  54 #include "gtkhseparator.h"
  55 #include "gtkinvisible.h"
  56 #include "gtkmenuitem.h"
  57 #include "gtkmain.h"
  58 #include "gtksettings.h"
  59 #include "gtkstock.h"
  60 #include "gtkaccessible.h"
  61 #include "gtksizerequest.h"
  62 #include "gtkprivate.h"
  63 #include "gtkintl.h"
  64
  65
  66 /**
  67  * SECTION:gtkcolorsel
  68  * @Short_description: A widget used to select a color
  69  * @Title: GtkColorSelection
  70  *
  71  * The #GtkColorSelection is a widget that is used to select
  72  * a color.  It consists of a color wheel and number of sliders
  73  * and entry boxes for color parameters such as hue, saturation,
  74  * value, red, green, blue, and opacity.  It is found on the standard
  75  * color selection dialog box #GtkColorSelectionDialog.
  76  */
  77
  78
  79 /* Keep it in sync with gtksettings.c:default_color_palette */
  80 #define DEFAULT_COLOR_PALETTE   "black:white:gray50:red:purple:blue:light blue:green:yellow:orange:lavender:brown:goldenrod4:dodger blue:pink:light green:gray10:gray30:gray75:gray90"
  81
  82 /* Number of elements in the custom palatte */
  83 #define GTK_CUSTOM_PALETTE_WIDTH 10
  84 #define GTK_CUSTOM_PALETTE_HEIGHT 2
  85
  86 #define CUSTOM_PALETTE_ENTRY_WIDTH   20
  87 #define CUSTOM_PALETTE_ENTRY_HEIGHT  20
  88
  89 /* The cursor for the dropper */
  90 #define DROPPER_WIDTH 17
  91 #define DROPPER_HEIGHT 17
  92 #define DROPPER_STRIDE (DROPPER_WIDTH * 4)
  93 #define DROPPER_X_HOT 2
  94 #define DROPPER_Y_HOT 16
  95
  96 #define SAMPLE_WIDTH  64
  97 #define SAMPLE_HEIGHT 28
  98 #define CHECK_SIZE 16
  99 #define BIG_STEP 20
 100
 101 /* Conversion between 0->1 double and and guint16. See
 102  * scale_round() below for more general conversions
 103  */
 104 #define SCALE(i) (i / 65535.)
 105 #define UNSCALE(d) ((guint16)(d * 65535 + 0.5))
 106 #define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
 107
 108 enum {
 109   COLOR_CHANGED,
 110   LAST_SIGNAL
 111 };
 112
 113 enum {
 114   PROP_0,
 115   PROP_HAS_PALETTE,
 116   PROP_HAS_OPACITY_CONTROL,
 117   PROP_CURRENT_COLOR,
 118   PROP_CURRENT_ALPHA,
 119   PROP_CURRENT_RGBA
 120 };
 121
 122 enum {
 123   COLORSEL_RED = 0,
 124   COLORSEL_GREEN = 1,
 125   COLORSEL_BLUE = 2,
 126   COLORSEL_OPACITY = 3,
 127   COLORSEL_HUE,
 128   COLORSEL_SATURATION,
 129   COLORSEL_VALUE,
 130   COLORSEL_NUM_CHANNELS
 131 };
 132
 133
 134 struct _GtkColorSelectionPrivate
 135 {
 136   guint has_opacity       : 1;
 137   guint has_palette       : 1;
 138   guint changing          : 1;
 139   guint default_set       : 1;
 140   guint default_alpha_set : 1;
 141   guint has_grab          : 1;
 142
 143   gdouble color[COLORSEL_NUM_CHANNELS];
 144   gdouble old_color[COLORSEL_NUM_CHANNELS];
 145
 146   GtkWidget *triangle_colorsel;
 147   GtkWidget *hue_spinbutton;
 148   GtkWidget *sat_spinbutton;
 149   GtkWidget *val_spinbutton;
 150   GtkWidget *red_spinbutton;
 151   GtkWidget *green_spinbutton;
 152   GtkWidget *blue_spinbutton;
 153   GtkWidget *opacity_slider;
 154   GtkWidget *opacity_label;
 155   GtkWidget *opacity_entry;
 156   GtkWidget *palette_frame;
 157   GtkWidget *hex_entry;
 158
 159   /* The Palette code */
 160   GtkWidget *custom_palette [GTK_CUSTOM_PALETTE_WIDTH][GTK_CUSTOM_PALETTE_HEIGHT];
 161
 162   /* The color_sample stuff */
 163   GtkWidget *sample_area;
 164   GtkWidget *old_sample;
 165   GtkWidget *cur_sample;
 166   GtkWidget *colorsel;
 167
 168   /* Window for grabbing on */
 169   GtkWidget *dropper_grab_widget;
 170   guint32    grab_time;
 171   GdkDevice *keyboard_device;
 172   GdkDevice *pointer_device;
 173
 174   /* Connection to settings */
 175   gulong settings_connection;
 176 };
 177
 178
 179 static void gtk_color_selection_destroy         (GtkWidget               *widget);
 180 static void gtk_color_selection_finalize        (GObject                 *object);
 181 static void update_color                        (GtkColorSelection       *colorsel);
 182 static void gtk_color_selection_set_property    (GObject                 *object,
 183                                                  guint                    prop_id,
 184                                                  const GValue            *value,
 185                                                  GParamSpec              *pspec);
 186 static void gtk_color_selection_get_property    (GObject                 *object,
 187                                                  guint                    prop_id,
 188                                                  GValue                  *value,
 189                                                  GParamSpec              *pspec);
 190
 191 static void gtk_color_selection_realize         (GtkWidget               *widget);
 192 static void gtk_color_selection_unrealize       (GtkWidget               *widget);
 193 static void gtk_color_selection_show_all        (GtkWidget               *widget);
 194 static gboolean gtk_color_selection_grab_broken (GtkWidget               *widget,
 195                                                  GdkEventGrabBroken      *event);
 196
 197 static void     gtk_color_selection_set_palette_color   (GtkColorSelection *colorsel,
 198                                                          gint               index,
 199                                                          GdkColor          *color);
 200 static void     set_focus_line_attributes               (GtkWidget         *drawing_area,
 201                                                          cairo_t           *cr,
 202                                                          gint              *focus_width);
 203 static void     default_noscreen_change_palette_func    (const GdkColor    *colors,
 204                                                          gint               n_colors);
 205 static void     default_change_palette_func             (GdkScreen         *screen,
 206                                                          const GdkColor    *colors,
 207                                                          gint               n_colors);
 208 static void     make_control_relations                  (AtkObject         *atk_obj,
 209                                                          GtkWidget         *widget);
 210 static void     make_all_relations                      (AtkObject         *atk_obj,
 211                                                          GtkColorSelectionPrivate *priv);
 212
 213 static void     hsv_changed                             (GtkWidget         *hsv,
 214                                                          gpointer           data);
 215 static void     get_screen_color                        (GtkWidget         *button);
 216 static void     adjustment_changed                      (GtkAdjustment     *adjustment,
 217                                                          gpointer           data);
 218 static void     opacity_entry_changed                   (GtkWidget         *opacity_entry,
 219                                                          gpointer           data);
 220 static void     hex_changed                             (GtkWidget         *hex_entry,
 221                                                          gpointer           data);
 222 static gboolean hex_focus_out                           (GtkWidget         *hex_entry,
 223                                                          GdkEventFocus     *event,
 224                                                          gpointer           data);
 225 static void     color_sample_new                        (GtkColorSelection *colorsel);
 226 static void     make_label_spinbutton                   (GtkColorSelection *colorsel,
 227                                                          GtkWidget        **spinbutton,
 228                                                          gchar             *text,
 229                                                          GtkWidget         *table,
 230                                                          gint               i,
 231                                                          gint               j,
 232                                                          gint               channel_type,
 233                                                          const gchar       *tooltip);
 234 static void     make_palette_frame                      (GtkColorSelection *colorsel,
 235                                                          GtkWidget         *table,
 236                                                          gint               i,
 237                                                          gint               j);
 238 static void     set_selected_palette                    (GtkColorSelection *colorsel,
 239                                                          int                x,
 240                                                          int                y);
 241 static void     set_focus_line_attributes               (GtkWidget         *drawing_area,
 242                                                          cairo_t           *cr,
 243                                                          gint              *focus_width);
 244 static gboolean mouse_press                             (GtkWidget         *invisible,
 245                                                          GdkEventButton    *event,
 246                                                          gpointer           data);
 247 static void  palette_change_notify_instance (GObject    *object,
 248                                              GParamSpec *pspec,
 249                                              gpointer    data);
 250 static void update_palette (GtkColorSelection *colorsel);
 251 static void shutdown_eyedropper (GtkWidget *widget);
 252
 253 static guint color_selection_signals[LAST_SIGNAL] = { 0 };
 254
 255 static GtkColorSelectionChangePaletteFunc noscreen_change_palette_hook = default_noscreen_change_palette_func;
 256 static GtkColorSelectionChangePaletteWithScreenFunc change_palette_hook = default_change_palette_func;
 257
 258 static const guchar dropper_bits[] = {
 259   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 260   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\377\377\377\377\377\377"
 261   "\377\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 262   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\0\0\0\377"
 263   "\0\0\0\377\0\0\0\377\377\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 264   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377"
 265   "\377\0\0\0\377\0\0\0\377\0\0\0\377\0\0\0\377\0\0\0\377\377\377\377\377"
 266   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377"
 267   "\377\377\377\377\377\377\377\377\377\377\377\0\0\0\377\0\0\0\377\0\0"
 268   "\0\377\0\0\0\377\0\0\0\377\377\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0\0"
 269   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\0\0\0\377\0\0\0\377\0"
 270   "\0\0\377\0\0\0\377\0\0\0\377\0\0\0\377\0\0\0\377\0\0\0\377\377\377\377"
 271   "\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 272   "\377\377\377\377\0\0\0\377\0\0\0\377\0\0\0\377\0\0\0\377\0\0\0\377\0"
 273   "\0\0\377\377\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 274   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\377\0\0\0\377\0\0"
 275   "\0\377\0\0\0\377\377\377\377\377\377\377\377\377\0\0\0\0\0\0\0\0\0\0"
 276   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377"
 277   "\377\377\377\377\377\377\377\377\377\377\0\0\0\377\0\0\0\377\377\377"
 278   "\377\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 279   "\0\0\0\0\0\0\0\0\0\377\377\377\377\377\377\377\377\377\377\377\377\377"
 280   "\0\0\0\377\377\377\377\377\0\0\0\377\377\377\377\377\0\0\0\0\0\0\0\0"
 281   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377"
 282   "\377\377\377\377\377\377\377\377\377\0\0\0\377\0\0\0\0\0\0\0\0\377\377"
 283   "\377\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 284   "\0\0\0\0\0\377\377\377\377\377\377\377\377\377\377\377\377\377\0\0\0"
 285   "\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 286   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\377\377\377\377\377\377"
 287   "\377\377\377\0\0\0\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 288   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\377"
 289   "\377\377\377\377\377\377\377\377\0\0\0\377\0\0\0\0\0\0\0\0\0\0\0\0\0"
 290   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 291   "\377\377\377\377\377\377\377\377\377\377\377\377\377\0\0\0\377\0\0\0"
 292   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 293   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\377\377\377\377\377\0\0"
 294   "\0\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 295   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\0\0\0\0\0\0\0\377\0\0\0"
 296   "\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 297   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\0\0\0\0\0"
 298   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
 299   "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"};
 300
 301 G_DEFINE_TYPE (GtkColorSelection, gtk_color_selection, GTK_TYPE_VBOX)
 302
 303 static void
 304 gtk_color_selection_class_init (GtkColorSelectionClass *klass)
 305 {
 306   GObjectClass *gobject_class;
 307   GtkWidgetClass *widget_class;
 308
 309   gobject_class = G_OBJECT_CLASS (klass);
 310   gobject_class->finalize = gtk_color_selection_finalize;
 311   gobject_class->set_property = gtk_color_selection_set_property;
 312   gobject_class->get_property = gtk_color_selection_get_property;
 313
 314   widget_class = GTK_WIDGET_CLASS (klass);
 315   widget_class->destroy = gtk_color_selection_destroy;
 316   widget_class->realize = gtk_color_selection_realize;
 317   widget_class->unrealize = gtk_color_selection_unrealize;
 318   widget_class->show_all = gtk_color_selection_show_all;
 319   widget_class->grab_broken_event = gtk_color_selection_grab_broken;
 320
 321   g_object_class_install_property (gobject_class,
 322                                    PROP_HAS_OPACITY_CONTROL,
 323                                    g_param_spec_boolean ("has-opacity-control",
 324                                                          P_("Has Opacity Control"),
 325                                                          P_("Whether the color selector should allow setting opacity"),
 326                                                          FALSE,
 327                                                          GTK_PARAM_READWRITE));
 328   g_object_class_install_property (gobject_class,
 329                                    PROP_HAS_PALETTE,
 330                                    g_param_spec_boolean ("has-palette",
 331                                                          P_("Has palette"),
 332                                                          P_("Whether a palette should be used"),
 333                                                          FALSE,
 334                                                          GTK_PARAM_READWRITE));
 335   g_object_class_install_property (gobject_class,
 336                                    PROP_CURRENT_COLOR,
 337                                    g_param_spec_boxed ("current-color",
 338                                                        P_("Current Color"),
 339                                                        P_("The current color"),
 340                                                        GDK_TYPE_COLOR,
 341                                                        GTK_PARAM_READWRITE));
 342   g_object_class_install_property (gobject_class,
 343                                    PROP_CURRENT_ALPHA,
 344                                    g_param_spec_uint ("current-alpha",
 345                                                       P_("Current Alpha"),
 346                                                       P_("The current opacity value (0 fully transparent, 65535 fully opaque)"),
 347                                                       0, 65535, 65535,
 348                                                       GTK_PARAM_READWRITE));
 349
 350   /**
 351    * GtkColorSelection:current-rgba
 352    *
 353    * The current RGBA color.
 354    *
 355    * Since: 3.0
 356    */
 357   g_object_class_install_property (gobject_class,
 358                                    PROP_CURRENT_RGBA,
 359                                    g_param_spec_boxed ("current-rgba",
 360                                                        P_("Current RGBA"),
 361                                                        P_("The current RGBA color"),
 362                                                        GDK_TYPE_RGBA,
 363                                                        GTK_PARAM_READWRITE));
 364
 365   /**
 366    * GtkColorSelection::color-changed:
 367    * @colorselection: the object which received the signal.
 368    *
 369    * This signal is emitted when the color changes in the #GtkColorSelection
 370    * according to its update policy.
 371    */
 372   color_selection_signals[COLOR_CHANGED] =
 373     g_signal_new (I_("color-changed"),
 374                   G_OBJECT_CLASS_TYPE (gobject_class),
 375                   G_SIGNAL_RUN_FIRST,
 376                   G_STRUCT_OFFSET (GtkColorSelectionClass, color_changed),
 377                   NULL, NULL,
 378                   _gtk_marshal_VOID__VOID,
 379                   G_TYPE_NONE, 0);
 380
 381   g_type_class_add_private (gobject_class, sizeof (GtkColorSelectionPrivate));
 382 }
 383
 384 static void
 385 gtk_color_selection_init (GtkColorSelection *colorsel)
 386 {
 387   GtkWidget *top_hbox;
 388   GtkWidget *top_right_vbox;
 389   GtkWidget *table, *label, *hbox, *frame, *vbox, *button;
 390   GtkAdjustment *adjust;
 391   GtkWidget *picker_image;
 392   gint i, j;
 393   GtkColorSelectionPrivate *priv;
 394   AtkObject *atk_obj;
 395   GList *focus_chain = NULL;
 396
 397   gtk_widget_push_composite_child ();
 398
 399   priv = colorsel->private_data = G_TYPE_INSTANCE_GET_PRIVATE (colorsel, GTK_TYPE_COLOR_SELECTION, GtkColorSelectionPrivate);
 400   priv->changing = FALSE;
 401   priv->default_set = FALSE;
 402   priv->default_alpha_set = FALSE;
 403
 404   top_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
 405   gtk_box_pack_start (GTK_BOX (colorsel), top_hbox, FALSE, FALSE, 0);
 406
 407   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
 408   priv->triangle_colorsel = gtk_hsv_new ();
 409   g_signal_connect (priv->triangle_colorsel, "changed",
 410                     G_CALLBACK (hsv_changed), colorsel);
 411   gtk_hsv_set_metrics (GTK_HSV (priv->triangle_colorsel), 174, 15);
 412   gtk_box_pack_start (GTK_BOX (top_hbox), vbox, FALSE, FALSE, 0);
 413   gtk_box_pack_start (GTK_BOX (vbox), priv->triangle_colorsel, FALSE, FALSE, 0);
 414   gtk_widget_set_tooltip_text (priv->triangle_colorsel,
 415                         _("Select the color you want from the outer ring. "
 416                           "Select the darkness or lightness of that color "
 417                           "using the inner triangle."));
 418
 419   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
 420   gtk_box_pack_end (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
 421
 422   frame = gtk_frame_new (NULL);
 423   gtk_widget_set_size_request (frame, -1, 30);
 424   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
 425   color_sample_new (colorsel);
 426   gtk_container_add (GTK_CONTAINER (frame), priv->sample_area);
 427   gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
 428
 429   button = gtk_button_new ();
 430
 431   gtk_widget_set_events (button, GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
 432   g_object_set_data (G_OBJECT (button), I_("COLORSEL"), colorsel);
 433   g_signal_connect (button, "clicked",
 434                     G_CALLBACK (get_screen_color), NULL);
 435   picker_image = gtk_image_new_from_stock (GTK_STOCK_COLOR_PICKER, GTK_ICON_SIZE_BUTTON);
 436   gtk_container_add (GTK_CONTAINER (button), picker_image);
 437   gtk_widget_show (GTK_WIDGET (picker_image));
 438   gtk_box_pack_end (GTK_BOX (hbox), button, FALSE, FALSE, 0);
 439
 440   gtk_widget_set_tooltip_text (button,
 441                         _("Click the eyedropper, then click a color "
 442                           "anywhere on your screen to select that color."));
 443
 444   top_right_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
 445   gtk_box_pack_start (GTK_BOX (top_hbox), top_right_vbox, FALSE, FALSE, 0);
 446   table = gtk_table_new (8, 6, FALSE);
 447   gtk_box_pack_start (GTK_BOX (top_right_vbox), table, FALSE, FALSE, 0);
 448   gtk_table_set_row_spacings (GTK_TABLE (table), 6);
 449   gtk_table_set_col_spacings (GTK_TABLE (table), 12);
 450
 451   make_label_spinbutton (colorsel, &priv->hue_spinbutton, _("_Hue:"), table, 0, 0, COLORSEL_HUE,
 452                          _("Position on the color wheel."));
 453   gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (priv->hue_spinbutton), TRUE);
 454   make_label_spinbutton (colorsel, &priv->sat_spinbutton, _("_Saturation:"), table, 0, 1, COLORSEL_SATURATION,
 455                          _("Intensity of the color."));
 456   make_label_spinbutton (colorsel, &priv->val_spinbutton, _("_Value:"), table, 0, 2, COLORSEL_VALUE,
 457                          _("Brightness of the color."));
 458   make_label_spinbutton (colorsel, &priv->red_spinbutton, _("_Red:"), table, 6, 0, COLORSEL_RED,
 459                          _("Amount of red light in the color."));
 460   make_label_spinbutton (colorsel, &priv->green_spinbutton, _("_Green:"), table, 6, 1, COLORSEL_GREEN,
 461                          _("Amount of green light in the color."));
 462   make_label_spinbutton (colorsel, &priv->blue_spinbutton, _("_Blue:"), table, 6, 2, COLORSEL_BLUE,
 463                          _("Amount of blue light in the color."));
 464   gtk_table_attach_defaults (GTK_TABLE (table), gtk_separator_new (GTK_ORIENTATION_HORIZONTAL), 0, 8, 3, 4);
 465
 466   priv->opacity_label = gtk_label_new_with_mnemonic (_("Op_acity:"));
 467   gtk_misc_set_alignment (GTK_MISC (priv->opacity_label), 0.0, 0.5);
 468   gtk_table_attach_defaults (GTK_TABLE (table), priv->opacity_label, 0, 1, 4, 5);
 469   adjust = gtk_adjustment_new (0.0, 0.0, 255.0, 1.0, 1.0, 0.0);
 470   g_object_set_data (G_OBJECT (adjust), I_("COLORSEL"), colorsel);
 471   priv->opacity_slider = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL, adjust);
 472   gtk_widget_set_tooltip_text (priv->opacity_slider,
 473                         _("Transparency of the color."));
 474   gtk_label_set_mnemonic_widget (GTK_LABEL (priv->opacity_label),
 475                                  priv->opacity_slider);
 476   gtk_scale_set_draw_value (GTK_SCALE (priv->opacity_slider), FALSE);
 477   g_signal_connect (adjust, "value-changed",
 478                     G_CALLBACK (adjustment_changed),
 479                     GINT_TO_POINTER (COLORSEL_OPACITY));
 480   gtk_table_attach_defaults (GTK_TABLE (table), priv->opacity_slider, 1, 7, 4, 5);
 481   priv->opacity_entry = gtk_entry_new ();
 482   gtk_widget_set_tooltip_text (priv->opacity_entry,
 483                         _("Transparency of the color."));
 484   gtk_widget_set_size_request (priv->opacity_entry, 40, -1);
 485
 486   g_signal_connect (priv->opacity_entry, "activate",
 487                     G_CALLBACK (opacity_entry_changed), colorsel);
 488   gtk_table_attach_defaults (GTK_TABLE (table), priv->opacity_entry, 7, 8, 4, 5);
 489
 490   label = gtk_label_new_with_mnemonic (_("Color _name:"));
 491   gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 5, 6);
 492   gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
 493   priv->hex_entry = gtk_entry_new ();
 494
 495   gtk_label_set_mnemonic_widget (GTK_LABEL (label), priv->hex_entry);
 496
 497   g_signal_connect (priv->hex_entry, "activate",
 498                     G_CALLBACK (hex_changed), colorsel);
 499
 500   g_signal_connect (priv->hex_entry, "focus-out-event",
 501                     G_CALLBACK (hex_focus_out), colorsel);
 502
 503   gtk_widget_set_tooltip_text (priv->hex_entry,
 504                         _("You can enter an HTML-style hexadecimal color "
 505                           "value, or simply a color name such as 'orange' "
 506                           "in this entry."));
 507
 508   gtk_entry_set_width_chars (GTK_ENTRY (priv->hex_entry), 7);
 509   gtk_table_attach_defaults (GTK_TABLE (table), priv->hex_entry, 1, 5, 5, 6);
 510
 511   focus_chain = g_list_append (focus_chain, priv->hue_spinbutton);
 512   focus_chain = g_list_append (focus_chain, priv->sat_spinbutton);
 513   focus_chain = g_list_append (focus_chain, priv->val_spinbutton);
 514   focus_chain = g_list_append (focus_chain, priv->red_spinbutton);
 515   focus_chain = g_list_append (focus_chain, priv->green_spinbutton);
 516   focus_chain = g_list_append (focus_chain, priv->blue_spinbutton);
 517   focus_chain = g_list_append (focus_chain, priv->opacity_slider);
 518   focus_chain = g_list_append (focus_chain, priv->opacity_entry);
 519   focus_chain = g_list_append (focus_chain, priv->hex_entry);
 520   gtk_container_set_focus_chain (GTK_CONTAINER (table), focus_chain);
 521   g_list_free (focus_chain);
 522
 523   /* Set up the palette */
 524   table = gtk_table_new (GTK_CUSTOM_PALETTE_HEIGHT, GTK_CUSTOM_PALETTE_WIDTH, TRUE);
 525   gtk_table_set_row_spacings (GTK_TABLE (table), 1);
 526   gtk_table_set_col_spacings (GTK_TABLE (table), 1);
 527   for (i = 0; i < GTK_CUSTOM_PALETTE_WIDTH; i++)
 528     {
 529       for (j = 0; j < GTK_CUSTOM_PALETTE_HEIGHT; j++)
 530         {
 531           make_palette_frame (colorsel, table, i, j);
 532         }
 533     }
 534   set_selected_palette (colorsel, 0, 0);
 535   priv->palette_frame = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
 536   label = gtk_label_new_with_mnemonic (_("_Palette:"));
 537   gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
 538   gtk_box_pack_start (GTK_BOX (priv->palette_frame), label, FALSE, FALSE, 0);
 539
 540   gtk_label_set_mnemonic_widget (GTK_LABEL (label),
 541                                  priv->custom_palette[0][0]);
 542
 543   gtk_box_pack_end (GTK_BOX (top_right_vbox), priv->palette_frame, FALSE, FALSE, 0);
 544   gtk_box_pack_start (GTK_BOX (priv->palette_frame), table, FALSE, FALSE, 0);
 545
 546   gtk_widget_show_all (top_hbox);
 547
 548   /* hide unused stuff */
 549
 550   if (priv->has_opacity == FALSE)
 551     {
 552       gtk_widget_hide (priv->opacity_label);
 553       gtk_widget_hide (priv->opacity_slider);
 554       gtk_widget_hide (priv->opacity_entry);
 555     }
 556
 557   if (priv->has_palette == FALSE)
 558     {
 559       gtk_widget_hide (priv->palette_frame);
 560     }
 561
 562   atk_obj = gtk_widget_get_accessible (priv->triangle_colorsel);
 563   if (GTK_IS_ACCESSIBLE (atk_obj))
 564     {
 565       atk_object_set_name (atk_obj, _("Color Wheel"));
 566       atk_object_set_role (gtk_widget_get_accessible (GTK_WIDGET (colorsel)), ATK_ROLE_COLOR_CHOOSER);
 567       make_all_relations (atk_obj, priv);
 568     }
 569
 570   gtk_widget_pop_composite_child ();
 571 }
 572
 573 /* GObject methods */
 574 static void
 575 gtk_color_selection_finalize (GObject *object)
 576 {
 577   G_OBJECT_CLASS (gtk_color_selection_parent_class)->finalize (object);
 578 }
 579
 580 static void
 581 gtk_color_selection_set_property (GObject         *object,
 582                                   guint            prop_id,
 583                                   const GValue    *value,
 584                                   GParamSpec      *pspec)
 585 {
 586   GtkColorSelection *colorsel = GTK_COLOR_SELECTION (object);
 587
 588   switch (prop_id)
 589     {
 590     case PROP_HAS_OPACITY_CONTROL:
 591       gtk_color_selection_set_has_opacity_control (colorsel,
 592                                                    g_value_get_boolean (value));
 593       break;
 594     case PROP_HAS_PALETTE:
 595       gtk_color_selection_set_has_palette (colorsel,
 596                                            g_value_get_boolean (value));
 597       break;
 598     case PROP_CURRENT_COLOR:
 599       gtk_color_selection_set_current_color (colorsel, g_value_get_boxed (value));
 600       break;
 601     case PROP_CURRENT_ALPHA:
 602       gtk_color_selection_set_current_alpha (colorsel, g_value_get_uint (value));
 603       break;
 604     case PROP_CURRENT_RGBA:
 605       gtk_color_selection_set_current_rgba (colorsel, g_value_get_boxed (value));
 606       break;
 607     default:
 608       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 609       break;
 610     }
 611
 612 }
 613
 614 static void
 615 gtk_color_selection_get_property (GObject     *object,
 616                                   guint        prop_id,
 617                                   GValue      *value,
 618                                   GParamSpec  *pspec)
 619 {
 620   GtkColorSelection *colorsel = GTK_COLOR_SELECTION (object);
 621   GdkColor color;
 622
 623   switch (prop_id)
 624     {
 625     case PROP_HAS_OPACITY_CONTROL:
 626       g_value_set_boolean (value, gtk_color_selection_get_has_opacity_control (colorsel));
 627       break;
 628     case PROP_HAS_PALETTE:
 629       g_value_set_boolean (value, gtk_color_selection_get_has_palette (colorsel));
 630       break;
 631     case PROP_CURRENT_COLOR:
 632       gtk_color_selection_get_current_color (colorsel, &color);
 633       g_value_set_boxed (value, &color);
 634       break;
 635     case PROP_CURRENT_ALPHA:
 636       g_value_set_uint (value, gtk_color_selection_get_current_alpha (colorsel));
 637       break;
 638     case PROP_CURRENT_RGBA:
 639       {
 640         GdkRGBA rgba;
 641
 642         gtk_color_selection_get_current_rgba (colorsel, &rgba);
 643         g_value_set_boxed (value, &rgba);
 644       }
 645       break;
 646     default:
 647       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 648       break;
 649     }
 650 }
 651
 652 /* GtkWidget methods */
 653
 654 static void
 655 gtk_color_selection_destroy (GtkWidget *widget)
 656 {
 657   GtkColorSelection *cselection = GTK_COLOR_SELECTION (widget);
 658   GtkColorSelectionPrivate *priv = cselection->private_data;
 659
 660   if (priv->dropper_grab_widget)
 661     {
 662       gtk_widget_destroy (priv->dropper_grab_widget);
 663       priv->dropper_grab_widget = NULL;
 664     }
 665
 666   GTK_WIDGET_CLASS (gtk_color_selection_parent_class)->destroy (widget);
 667 }
 668
 669 static void
 670 gtk_color_selection_realize (GtkWidget *widget)
 671 {
 672   GtkColorSelection *colorsel = GTK_COLOR_SELECTION (widget);
 673   GtkColorSelectionPrivate *priv = colorsel->private_data;
 674   GtkSettings *settings = gtk_widget_get_settings (widget);
 675
 676   priv->settings_connection =  g_signal_connect (settings,
 677                                                  "notify::gtk-color-palette",
 678                                                  G_CALLBACK (palette_change_notify_instance),
 679                                                  widget);
 680   update_palette (colorsel);
 681
 682   GTK_WIDGET_CLASS (gtk_color_selection_parent_class)->realize (widget);
 683 }
 684
 685 static void
 686 gtk_color_selection_unrealize (GtkWidget *widget)
 687 {
 688   GtkColorSelection *colorsel = GTK_COLOR_SELECTION (widget);
 689   GtkColorSelectionPrivate *priv = colorsel->private_data;
 690   GtkSettings *settings = gtk_widget_get_settings (widget);
 691
 692   g_signal_handler_disconnect (settings, priv->settings_connection);
 693
 694   GTK_WIDGET_CLASS (gtk_color_selection_parent_class)->unrealize (widget);
 695 }
 696
 697 /* We override show-all since we have internal widgets that
 698  * shouldn't be shown when you call show_all(), like the
 699  * palette and opacity sliders.
 700  */
 701 static void
 702 gtk_color_selection_show_all (GtkWidget *widget)
 703 {
 704   gtk_widget_show (widget);
 705 }
 706
 707 static gboolean
 708 gtk_color_selection_grab_broken (GtkWidget          *widget,
 709                                  GdkEventGrabBroken *event)
 710 {
 711   shutdown_eyedropper (widget);
 712
 713   return TRUE;
 714 }
 715
 716 /*
 717  *
 718  * The Sample Color
 719  *
 720  */
 721
 722 static void color_sample_draw_sample (GtkColorSelection *colorsel,
 723                                       int                which,
 724                                       cairo_t *          cr);
 725 static void color_sample_update_samples (GtkColorSelection *colorsel);
 726
 727 static void
 728 set_color_internal (GtkColorSelection *colorsel,
 729                     gdouble           *color)
 730 {
 731   GtkColorSelectionPrivate *priv;
 732   gint i;
 733
 734   priv = colorsel->private_data;
 735   priv->changing = TRUE;
 736   priv->color[COLORSEL_RED] = color[0];
 737   priv->color[COLORSEL_GREEN] = color[1];
 738   priv->color[COLORSEL_BLUE] = color[2];
 739   priv->color[COLORSEL_OPACITY] = color[3];
 740   gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
 741                   priv->color[COLORSEL_GREEN],
 742                   priv->color[COLORSEL_BLUE],
 743                   &priv->color[COLORSEL_HUE],
 744                   &priv->color[COLORSEL_SATURATION],
 745                   &priv->color[COLORSEL_VALUE]);
 746   if (priv->default_set == FALSE)
 747     {
 748       for (i = 0; i < COLORSEL_NUM_CHANNELS; i++)
 749         priv->old_color[i] = priv->color[i];
 750     }
 751   priv->default_set = TRUE;
 752   priv->default_alpha_set = TRUE;
 753   update_color (colorsel);
 754 }
 755
 756 static void
 757 set_color_icon (GdkDragContext *context,
 758                 gdouble        *colors)
 759 {
 760   GdkPixbuf *pixbuf;
 761   guint32 pixel;
 762
 763   pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE,
 764                            8, 48, 32);
 765
 766   pixel = (((UNSCALE (colors[COLORSEL_RED])   & 0xff00) << 16) |
 767            ((UNSCALE (colors[COLORSEL_GREEN]) & 0xff00) << 8) |
 768            ((UNSCALE (colors[COLORSEL_BLUE])  & 0xff00)));
 769
 770   gdk_pixbuf_fill (pixbuf, pixel);
 771
 772   gtk_drag_set_icon_pixbuf (context, pixbuf, -2, -2);
 773   g_object_unref (pixbuf);
 774 }
 775
 776 static void
 777 color_sample_drag_begin (GtkWidget      *widget,
 778                          GdkDragContext *context,
 779                          gpointer        data)
 780 {
 781   GtkColorSelection *colorsel = data;
 782   GtkColorSelectionPrivate *priv;
 783   gdouble *colsrc;
 784
 785   priv = colorsel->private_data;
 786
 787   if (widget == priv->old_sample)
 788     colsrc = priv->old_color;
 789   else
 790     colsrc = priv->color;
 791
 792   set_color_icon (context, colsrc);
 793 }
 794
 795 static void
 796 color_sample_drag_end (GtkWidget      *widget,
 797                        GdkDragContext *context,
 798                        gpointer        data)
 799 {
 800   g_object_set_data (G_OBJECT (widget), I_("gtk-color-selection-drag-window"), NULL);
 801 }
 802
 803 static void
 804 color_sample_drop_handle (GtkWidget        *widget,
 805                           GdkDragContext   *context,
 806                           gint              x,
 807                           gint              y,
 808                           GtkSelectionData *selection_data,
 809                           guint             info,
 810                           guint             time,
 811                           gpointer          data)
 812 {
 813   GtkColorSelection *colorsel = data;
 814   GtkColorSelectionPrivate *priv;
 815   gint length;
 816   guint16 *vals;
 817   gdouble color[4];
 818   priv = colorsel->private_data;
 819
 820   /* This is currently a guint16 array of the format:
 821    * R
 822    * G
 823    * B
 824    * opacity
 825    */
 826
 827   length = gtk_selection_data_get_length (selection_data);
 828
 829   if (length < 0)
 830     return;
 831
 832   /* We accept drops with the wrong format, since the KDE color
 833    * chooser incorrectly drops application/x-color with format 8.
 834    */
 835   if (length != 8)
 836     {
 837       g_warning ("Received invalid color data\n");
 838       return;
 839     }
 840
 841   vals = (guint16 *) gtk_selection_data_get_data (selection_data);
 842
 843   if (widget == priv->cur_sample)
 844     {
 845       color[0] = (gdouble)vals[0] / 0xffff;
 846       color[1] = (gdouble)vals[1] / 0xffff;
 847       color[2] = (gdouble)vals[2] / 0xffff;
 848       color[3] = (gdouble)vals[3] / 0xffff;
 849
 850       set_color_internal (colorsel, color);
 851     }
 852 }
 853
 854 static void
 855 color_sample_drag_handle (GtkWidget        *widget,
 856                           GdkDragContext   *context,
 857                           GtkSelectionData *selection_data,
 858                           guint             info,
 859                           guint             time,
 860                           gpointer          data)
 861 {
 862   GtkColorSelection *colorsel = data;
 863   GtkColorSelectionPrivate *priv;
 864   guint16 vals[4];
 865   gdouble *colsrc;
 866
 867   priv = colorsel->private_data;
 868
 869   if (widget == priv->old_sample)
 870     colsrc = priv->old_color;
 871   else
 872     colsrc = priv->color;
 873
 874   vals[0] = colsrc[COLORSEL_RED] * 0xffff;
 875   vals[1] = colsrc[COLORSEL_GREEN] * 0xffff;
 876   vals[2] = colsrc[COLORSEL_BLUE] * 0xffff;
 877   vals[3] = priv->has_opacity ? colsrc[COLORSEL_OPACITY] * 0xffff : 0xffff;
 878
 879   gtk_selection_data_set (selection_data,
 880                           gdk_atom_intern_static_string ("application/x-color"),
 881                           16, (guchar *)vals, 8);
 882 }
 883
 884 /* which = 0 means draw old sample, which = 1 means draw new */
 885 static void
 886 color_sample_draw_sample (GtkColorSelection *colorsel,
 887                           int                which,
 888                           cairo_t           *cr)
 889 {
 890   GtkWidget *da;
 891   gint x, y, goff;
 892   GtkColorSelectionPrivate *priv;
 893   int width, height;
 894
 895   g_return_if_fail (colorsel != NULL);
 896   priv = colorsel->private_data;
 897
 898   g_return_if_fail (priv->sample_area != NULL);
 899   if (!gtk_widget_is_drawable (priv->sample_area))
 900     return;
 901
 902   if (which == 0)
 903     {
 904       da = priv->old_sample;
 905       goff = 0;
 906     }
 907   else
 908     {
 909       GtkAllocation old_sample_allocation;
 910
 911       da = priv->cur_sample;
 912       gtk_widget_get_allocation (priv->old_sample, &old_sample_allocation);
 913       goff =  old_sample_allocation.width % 32;
 914     }
 915
 916   /* Below needs tweaking for non-power-of-two */
 917   width = gtk_widget_get_allocated_width (da);
 918   height = gtk_widget_get_allocated_height (da);
 919
 920   if (priv->has_opacity)
 921     {
 922       /* Draw checks in background */
 923
 924       cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
 925       cairo_rectangle (cr, 0, 0, width, height);
 926       cairo_fill (cr);
 927
 928       cairo_set_source_rgb (cr, 0.75, 0.75, 0.75);
 929       for (x = goff & -CHECK_SIZE; x < goff + width; x += CHECK_SIZE)
 930         for (y = 0; y < height; y += CHECK_SIZE)
 931           if ((x / CHECK_SIZE + y / CHECK_SIZE) % 2 == 0)
 932             cairo_rectangle (cr, x - goff, y, CHECK_SIZE, CHECK_SIZE);
 933       cairo_fill (cr);
 934     }
 935
 936   if (which == 0)
 937     {
 938       cairo_set_source_rgba (cr,
 939                              priv->old_color[COLORSEL_RED],
 940                              priv->old_color[COLORSEL_GREEN],
 941                              priv->old_color[COLORSEL_BLUE],
 942                              priv->has_opacity ?
 943                                 priv->old_color[COLORSEL_OPACITY] : 1.0);
 944     }
 945   else
 946     {
 947       cairo_set_source_rgba (cr,
 948                              priv->color[COLORSEL_RED],
 949                              priv->color[COLORSEL_GREEN],
 950                              priv->color[COLORSEL_BLUE],
 951                              priv->has_opacity ?
 952                                priv->color[COLORSEL_OPACITY] : 1.0);
 953     }
 954
 955   cairo_rectangle (cr, 0, 0, width, height);
 956   cairo_fill (cr);
 957 }
 958
 959
 960 static void
 961 color_sample_update_samples (GtkColorSelection *colorsel)
 962 {
 963   GtkColorSelectionPrivate *priv = colorsel->private_data;
 964   gtk_widget_queue_draw (priv->old_sample);
 965   gtk_widget_queue_draw (priv->cur_sample);
 966 }
 967
 968 static gboolean
 969 color_old_sample_draw (GtkWidget         *da,
 970                        cairo_t           *cr,
 971                        GtkColorSelection *colorsel)
 972 {
 973   color_sample_draw_sample (colorsel, 0, cr);
 974   return FALSE;
 975 }
 976
 977
 978 static gboolean
 979 color_cur_sample_draw (GtkWidget         *da,
 980                        cairo_t           *cr,
 981                        GtkColorSelection *colorsel)
 982 {
 983   color_sample_draw_sample (colorsel, 1, cr);
 984   return FALSE;
 985 }
 986
 987 static void
 988 color_sample_setup_dnd (GtkColorSelection *colorsel, GtkWidget *sample)
 989 {
 990   static const GtkTargetEntry targets[] = {
 991     { "application/x-color", 0 }
 992   };
 993   GtkColorSelectionPrivate *priv;
 994   priv = colorsel->private_data;
 995
 996   gtk_drag_source_set (sample,
 997                        GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
 998                        targets, 1,
 999                        GDK_ACTION_COPY | GDK_ACTION_MOVE);
1000
1001   g_signal_connect (sample, "drag-begin",
1002                     G_CALLBACK (color_sample_drag_begin),
1003                     colorsel);
1004   if (sample == priv->cur_sample)
1005     {
1006
1007       gtk_drag_dest_set (sample,
1008                          GTK_DEST_DEFAULT_HIGHLIGHT |
1009                          GTK_DEST_DEFAULT_MOTION |
1010                          GTK_DEST_DEFAULT_DROP,
1011                          targets, 1,
1012                          GDK_ACTION_COPY);
1013
1014       g_signal_connect (sample, "drag-end",
1015                         G_CALLBACK (color_sample_drag_end),
1016                         colorsel);
1017     }
1018
1019   g_signal_connect (sample, "drag-data-get",
1020                     G_CALLBACK (color_sample_drag_handle),
1021                     colorsel);
1022   g_signal_connect (sample, "drag-data-received",
1023                     G_CALLBACK (color_sample_drop_handle),
1024                     colorsel);
1025
1026 }
1027
1028 static void
1029 update_tooltips (GtkColorSelection *colorsel)
1030 {
1031   GtkColorSelectionPrivate *priv;
1032
1033   priv = colorsel->private_data;
1034
1035   if (priv->has_palette == TRUE)
1036     {
1037       gtk_widget_set_tooltip_text (priv->old_sample,
1038         _("The previously-selected color, for comparison to the color "
1039           "you're selecting now. You can drag this color to a palette "
1040           "entry, or select this color as current by dragging it to the "
1041           "other color swatch alongside."));
1042
1043       gtk_widget_set_tooltip_text (priv->cur_sample,
1044         _("The color you've chosen. You can drag this color to a palette "
1045           "entry to save it for use in the future."));
1046     }
1047   else
1048     {
1049       gtk_widget_set_tooltip_text (priv->old_sample,
1050         _("The previously-selected color, for comparison to the color "
1051           "you're selecting now."));
1052
1053       gtk_widget_set_tooltip_text (priv->cur_sample,
1054         _("The color you've chosen."));
1055     }
1056 }
1057
1058 static void
1059 color_sample_new (GtkColorSelection *colorsel)
1060 {
1061   GtkColorSelectionPrivate *priv;
1062
1063   priv = colorsel->private_data;
1064
1065   priv->sample_area = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
1066   priv->old_sample = gtk_drawing_area_new ();
1067   priv->cur_sample = gtk_drawing_area_new ();
1068
1069   gtk_box_pack_start (GTK_BOX (priv->sample_area), priv->old_sample,
1070                       TRUE, TRUE, 0);
1071   gtk_box_pack_start (GTK_BOX (priv->sample_area), priv->cur_sample,
1072                       TRUE, TRUE, 0);
1073
1074   g_signal_connect (priv->old_sample, "draw",
1075                     G_CALLBACK (color_old_sample_draw),
1076                     colorsel);
1077   g_signal_connect (priv->cur_sample, "draw",
1078                     G_CALLBACK (color_cur_sample_draw),
1079                     colorsel);
1080
1081   color_sample_setup_dnd (colorsel, priv->old_sample);
1082   color_sample_setup_dnd (colorsel, priv->cur_sample);
1083
1084   update_tooltips (colorsel);
1085
1086   gtk_widget_show_all (priv->sample_area);
1087 }
1088
1089
1090 /* The palette area code */
1091
1092 static void
1093 palette_get_color (GtkWidget *drawing_area, gdouble *color)
1094 {
1095   gdouble *color_val;
1096
1097   g_return_if_fail (color != NULL);
1098
1099   color_val = g_object_get_data (G_OBJECT (drawing_area), "color_val");
1100   if (color_val == NULL)
1101     {
1102       /* Default to white for no good reason */
1103       color[0] = 1.0;
1104       color[1] = 1.0;
1105       color[2] = 1.0;
1106       color[3] = 1.0;
1107       return;
1108     }
1109
1110   color[0] = color_val[0];
1111   color[1] = color_val[1];
1112   color[2] = color_val[2];
1113   color[3] = 1.0;
1114 }
1115
1116 static gboolean
1117 palette_draw (GtkWidget *drawing_area,
1118                cairo_t   *cr,
1119                gpointer   data)
1120 {
1121   GtkStyleContext *context;
1122   gint focus_width;
1123   GdkRGBA color;
1124
1125   context = gtk_widget_get_style_context (drawing_area);
1126   gtk_style_context_get_background_color (context, 0, &color);
1127   gdk_cairo_set_source_rgba (cr, &color);
1128   cairo_paint (cr);
1129
1130   if (gtk_widget_has_focus (drawing_area))
1131     {
1132       set_focus_line_attributes (drawing_area, cr, &focus_width);
1133
1134       cairo_rectangle (cr,
1135                        focus_width / 2., focus_width / 2.,
1136                        gtk_widget_get_allocated_width (drawing_area) - focus_width,
1137                        gtk_widget_get_allocated_height (drawing_area) - focus_width);
1138       cairo_stroke (cr);
1139     }
1140
1141   return FALSE;
1142 }
1143
1144 static void
1145 set_focus_line_attributes (GtkWidget *drawing_area,
1146                            cairo_t   *cr,
1147                            gint      *focus_width)
1148 {
1149   gdouble color[4];
1150   gint8 *dash_list;
1151
1152   gtk_widget_style_get (drawing_area,
1153                         "focus-line-width", focus_width,
1154                         "focus-line-pattern", (gchar *)&dash_list,
1155                         NULL);
1156
1157   palette_get_color (drawing_area, color);
1158
1159   if (INTENSITY (color[0], color[1], color[2]) > 0.5)
1160     cairo_set_source_rgb (cr, 0., 0., 0.);
1161   else
1162     cairo_set_source_rgb (cr, 1., 1., 1.);
1163
1164   cairo_set_line_width (cr, *focus_width);
1165
1166   if (dash_list[0])
1167     {
1168       gint n_dashes = strlen ((gchar *)dash_list);
1169       gdouble *dashes = g_new (gdouble, n_dashes);
1170       gdouble total_length = 0;
1171       gdouble dash_offset;
1172       gint i;
1173
1174       for (i = 0; i < n_dashes; i++)
1175         {
1176           dashes[i] = dash_list[i];
1177           total_length += dash_list[i];
1178         }
1179
1180       /* The dash offset here aligns the pattern to integer pixels
1181        * by starting the dash at the right side of the left border
1182        * Negative dash offsets in cairo don't work
1183        * (https://bugs.freedesktop.org/show_bug.cgi?id=2729)
1184        */
1185       dash_offset = - *focus_width / 2.;
1186       while (dash_offset < 0)
1187         dash_offset += total_length;
1188
1189       cairo_set_dash (cr, dashes, n_dashes, dash_offset);
1190       g_free (dashes);
1191     }
1192
1193   g_free (dash_list);
1194 }
1195
1196 static void
1197 palette_drag_begin (GtkWidget      *widget,
1198                     GdkDragContext *context,
1199                     gpointer        data)
1200 {
1201   gdouble colors[4];
1202
1203   palette_get_color (widget, colors);
1204   set_color_icon (context, colors);
1205 }
1206
1207 static void
1208 palette_drag_handle (GtkWidget        *widget,
1209                      GdkDragContext   *context,
1210                      GtkSelectionData *selection_data,
1211                      guint             info,
1212                      guint             time,
1213                      gpointer          data)
1214 {
1215   guint16 vals[4];
1216   gdouble colsrc[4];
1217
1218   palette_get_color (widget, colsrc);
1219
1220   vals[0] = colsrc[COLORSEL_RED] * 0xffff;
1221   vals[1] = colsrc[COLORSEL_GREEN] * 0xffff;
1222   vals[2] = colsrc[COLORSEL_BLUE] * 0xffff;
1223   vals[3] = 0xffff;
1224
1225   gtk_selection_data_set (selection_data,
1226                           gdk_atom_intern_static_string ("application/x-color"),
1227                           16, (guchar *)vals, 8);
1228 }
1229
1230 static void
1231 palette_drag_end (GtkWidget      *widget,
1232                   GdkDragContext *context,
1233                   gpointer        data)
1234 {
1235   g_object_set_data (G_OBJECT (widget), I_("gtk-color-selection-drag-window"), NULL);
1236 }
1237
1238 static GdkColor *
1239 get_current_colors (GtkColorSelection *colorsel)
1240 {
1241   GtkSettings *settings;
1242   GdkColor *colors = NULL;
1243   gint n_colors = 0;
1244   gchar *palette;
1245
1246   settings = gtk_widget_get_settings (GTK_WIDGET (colorsel));
1247   g_object_get (settings, "gtk-color-palette", &palette, NULL);
1248
1249   if (!gtk_color_selection_palette_from_string (palette, &colors, &n_colors))
1250     {
1251       gtk_color_selection_palette_from_string (DEFAULT_COLOR_PALETTE,
1252                                                &colors,
1253                                                &n_colors);
1254     }
1255   else
1256     {
1257       /* If there are less colors provided than the number of slots in the
1258        * color selection, we fill in the rest from the defaults.
1259        */
1260       if (n_colors < (GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT))
1261         {
1262           GdkColor *tmp_colors = colors;
1263           gint tmp_n_colors = n_colors;
1264
1265           gtk_color_selection_palette_from_string (DEFAULT_COLOR_PALETTE,
1266                                                    &colors,
1267                                                    &n_colors);
1268           memcpy (colors, tmp_colors, sizeof (GdkColor) * tmp_n_colors);
1269
1270           g_free (tmp_colors);
1271         }
1272     }
1273
1274   /* make sure that we fill every slot */
1275   g_assert (n_colors == GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT);
1276   g_free (palette);
1277
1278   return colors;
1279 }
1280
1281 /* Changes the model color */
1282 static void
1283 palette_change_color (GtkWidget         *drawing_area,
1284                       GtkColorSelection *colorsel,
1285                       gdouble           *color)
1286 {
1287   gint x, y;
1288   GtkColorSelectionPrivate *priv;
1289   GdkColor gdk_color;
1290   GdkColor *current_colors;
1291   GdkScreen *screen;
1292
1293   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
1294   g_return_if_fail (GTK_IS_DRAWING_AREA (drawing_area));
1295
1296   priv = colorsel->private_data;
1297
1298   gdk_color.red = UNSCALE (color[0]);
1299   gdk_color.green = UNSCALE (color[1]);
1300   gdk_color.blue = UNSCALE (color[2]);
1301   gdk_color.pixel = 0;
1302
1303   x = 0;
1304   y = 0;                        /* Quiet GCC */
1305   while (x < GTK_CUSTOM_PALETTE_WIDTH)
1306     {
1307       y = 0;
1308       while (y < GTK_CUSTOM_PALETTE_HEIGHT)
1309         {
1310           if (priv->custom_palette[x][y] == drawing_area)
1311             goto out;
1312
1313           ++y;
1314         }
1315
1316       ++x;
1317     }
1318
1319  out:
1320
1321   g_assert (x < GTK_CUSTOM_PALETTE_WIDTH || y < GTK_CUSTOM_PALETTE_HEIGHT);
1322
1323   current_colors = get_current_colors (colorsel);
1324   current_colors[y * GTK_CUSTOM_PALETTE_WIDTH + x] = gdk_color;
1325
1326   screen = gtk_widget_get_screen (GTK_WIDGET (colorsel));
1327   if (change_palette_hook != default_change_palette_func)
1328     (* change_palette_hook) (screen, current_colors,
1329                              GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT);
1330   else if (noscreen_change_palette_hook != default_noscreen_change_palette_func)
1331     {
1332       if (screen != gdk_screen_get_default ())
1333         g_warning ("gtk_color_selection_set_change_palette_hook used by "
1334                    "widget is not on the default screen.");
1335       (* noscreen_change_palette_hook) (current_colors,
1336                                         GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT);
1337     }
1338   else
1339     (* change_palette_hook) (screen, current_colors,
1340                              GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT);
1341
1342   g_free (current_colors);
1343 }
1344
1345 /* Changes the view color */
1346 static void
1347 palette_set_color (GtkWidget         *drawing_area,
1348                    GtkColorSelection *colorsel,
1349                    gdouble           *color)
1350 {
1351   gdouble *new_color = g_new (double, 4);
1352   GdkColor gdk_color;
1353
1354   gdk_color.red = UNSCALE (color[0]);
1355   gdk_color.green = UNSCALE (color[1]);
1356   gdk_color.blue = UNSCALE (color[2]);
1357
1358   gtk_widget_modify_bg (drawing_area, GTK_STATE_NORMAL, &gdk_color);
1359
1360   if (GPOINTER_TO_INT (g_object_get_data (G_OBJECT (drawing_area), "color_set")) == 0)
1361     {
1362       static const GtkTargetEntry targets[] = {
1363         { "application/x-color", 0 }
1364       };
1365       gtk_drag_source_set (drawing_area,
1366                            GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
1367                            targets, 1,
1368                            GDK_ACTION_COPY | GDK_ACTION_MOVE);
1369
1370       g_signal_connect (drawing_area, "drag-begin",
1371                         G_CALLBACK (palette_drag_begin),
1372                         colorsel);
1373       g_signal_connect (drawing_area, "drag-data-get",
1374                         G_CALLBACK (palette_drag_handle),
1375                         colorsel);
1376
1377       g_object_set_data (G_OBJECT (drawing_area), I_("color_set"),
1378                          GINT_TO_POINTER (1));
1379     }
1380
1381   new_color[0] = color[0];
1382   new_color[1] = color[1];
1383   new_color[2] = color[2];
1384   new_color[3] = 1.0;
1385
1386   g_object_set_data_full (G_OBJECT (drawing_area),
1387                           I_("color_val"), new_color, (GDestroyNotify)g_free);
1388 }
1389
1390 static void
1391 popup_position_func (GtkMenu   *menu,
1392                      gint      *x,
1393                      gint      *y,
1394                      gboolean  *push_in,
1395                      gpointer   user_data)
1396 {
1397   GtkAllocation allocation;
1398   GtkWidget *widget;
1399   GtkRequisition req;
1400   gint root_x, root_y;
1401   GdkScreen *screen;
1402
1403   widget = GTK_WIDGET (user_data);
1404
1405   g_return_if_fail (gtk_widget_get_realized (widget));
1406
1407   gdk_window_get_origin (gtk_widget_get_window (widget),
1408                          &root_x, &root_y);
1409
1410   gtk_widget_get_preferred_size (GTK_WIDGET (menu),
1411                                  &req, NULL);
1412   gtk_widget_get_allocation (widget, &allocation);
1413
1414   /* Put corner of menu centered on color cell */
1415   *x = root_x + allocation.width / 2;
1416   *y = root_y + allocation.height / 2;
1417
1418   /* Ensure sanity */
1419   screen = gtk_widget_get_screen (widget);
1420   *x = CLAMP (*x, 0, MAX (0, gdk_screen_get_width (screen) - req.width));
1421   *y = CLAMP (*y, 0, MAX (0, gdk_screen_get_height (screen) - req.height));
1422 }
1423
1424 static void
1425 save_color_selected (GtkWidget *menuitem,
1426                      gpointer   data)
1427 {
1428   GtkColorSelection *colorsel;
1429   GtkWidget *drawing_area;
1430   GtkColorSelectionPrivate *priv;
1431
1432   drawing_area = GTK_WIDGET (data);
1433
1434   colorsel = GTK_COLOR_SELECTION (g_object_get_data (G_OBJECT (drawing_area),
1435                                                      "gtk-color-sel"));
1436
1437   priv = colorsel->private_data;
1438
1439   palette_change_color (drawing_area, colorsel, priv->color);
1440 }
1441
1442 static void
1443 do_popup (GtkColorSelection *colorsel,
1444           GtkWidget         *drawing_area,
1445           guint32            timestamp)
1446 {
1447   GtkWidget *menu;
1448   GtkWidget *mi;
1449
1450   g_object_set_data (G_OBJECT (drawing_area),
1451                      I_("gtk-color-sel"),
1452                      colorsel);
1453
1454   menu = gtk_menu_new ();
1455
1456   mi = gtk_menu_item_new_with_mnemonic (_("_Save color here"));
1457
1458   g_signal_connect (mi, "activate",
1459                     G_CALLBACK (save_color_selected),
1460                     drawing_area);
1461
1462   gtk_menu_shell_append (GTK_MENU_SHELL (menu), mi);
1463
1464   gtk_widget_show_all (mi);
1465
1466   gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
1467                   popup_position_func, drawing_area,
1468                   3, timestamp);
1469 }
1470
1471
1472 static gboolean
1473 palette_enter (GtkWidget        *drawing_area,
1474                GdkEventCrossing *event,
1475                gpointer        data)
1476 {
1477   g_object_set_data (G_OBJECT (drawing_area),
1478                      I_("gtk-colorsel-have-pointer"),
1479                      GUINT_TO_POINTER (TRUE));
1480
1481   return FALSE;
1482 }
1483
1484 static gboolean
1485 palette_leave (GtkWidget        *drawing_area,
1486                GdkEventCrossing *event,
1487                gpointer        data)
1488 {
1489   g_object_set_data (G_OBJECT (drawing_area),
1490                      I_("gtk-colorsel-have-pointer"),
1491                      NULL);
1492
1493   return FALSE;
1494 }
1495
1496 static gboolean
1497 palette_press (GtkWidget      *drawing_area,
1498                GdkEventButton *event,
1499                gpointer        data)
1500 {
1501   GtkColorSelection *colorsel = GTK_COLOR_SELECTION (data);
1502
1503   gtk_widget_grab_focus (drawing_area);
1504
1505   if (event->button == 3 &&
1506       event->type == GDK_BUTTON_PRESS)
1507     {
1508       do_popup (colorsel, drawing_area, event->time);
1509       return TRUE;
1510     }
1511
1512   return FALSE;
1513 }
1514
1515 static gboolean
1516 palette_release (GtkWidget      *drawing_area,
1517                  GdkEventButton *event,
1518                  gpointer        data)
1519 {
1520   GtkColorSelection *colorsel = GTK_COLOR_SELECTION (data);
1521
1522   gtk_widget_grab_focus (drawing_area);
1523
1524   if (event->button == 1 &&
1525       g_object_get_data (G_OBJECT (drawing_area),
1526                          "gtk-colorsel-have-pointer") != NULL)
1527     {
1528       if (GPOINTER_TO_INT (g_object_get_data (G_OBJECT (drawing_area), "color_set")) != 0)
1529         {
1530           gdouble color[4];
1531           palette_get_color (drawing_area, color);
1532           set_color_internal (colorsel, color);
1533         }
1534     }
1535
1536   return FALSE;
1537 }
1538
1539 static void
1540 palette_drop_handle (GtkWidget        *widget,
1541                      GdkDragContext   *context,
1542                      gint              x,
1543                      gint              y,
1544                      GtkSelectionData *selection_data,
1545                      guint             info,
1546                      guint             time,
1547                      gpointer          data)
1548 {
1549   GtkColorSelection *colorsel = GTK_COLOR_SELECTION (data);
1550   gint length;
1551   guint16 *vals;
1552   gdouble color[4];
1553
1554   length = gtk_selection_data_get_length (selection_data);
1555
1556   if (length < 0)
1557     return;
1558
1559   /* We accept drops with the wrong format, since the KDE color
1560    * chooser incorrectly drops application/x-color with format 8.
1561    */
1562   if (length != 8)
1563     {
1564       g_warning ("Received invalid color data\n");
1565       return;
1566     }
1567
1568   vals = (guint16 *) gtk_selection_data_get_data (selection_data);
1569
1570   color[0] = (gdouble)vals[0] / 0xffff;
1571   color[1] = (gdouble)vals[1] / 0xffff;
1572   color[2] = (gdouble)vals[2] / 0xffff;
1573   color[3] = (gdouble)vals[3] / 0xffff;
1574   palette_change_color (widget, colorsel, color);
1575   set_color_internal (colorsel, color);
1576 }
1577
1578 static gint
1579 palette_activate (GtkWidget   *widget,
1580                   GdkEventKey *event,
1581                   gpointer     data)
1582 {
1583   /* should have a drawing area subclass with an activate signal */
1584   if ((event->keyval == GDK_KEY_space) ||
1585       (event->keyval == GDK_KEY_Return) ||
1586       (event->keyval == GDK_KEY_ISO_Enter) ||
1587       (event->keyval == GDK_KEY_KP_Enter) ||
1588       (event->keyval == GDK_KEY_KP_Space))
1589     {
1590       if (GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget), "color_set")) != 0)
1591         {
1592           gdouble color[4];
1593           palette_get_color (widget, color);
1594           set_color_internal (GTK_COLOR_SELECTION (data), color);
1595         }
1596       return TRUE;
1597     }
1598
1599   return FALSE;
1600 }
1601
1602 static gboolean
1603 palette_popup (GtkWidget *widget,
1604                gpointer   data)
1605 {
1606   GtkColorSelection *colorsel = GTK_COLOR_SELECTION (data);
1607
1608   do_popup (colorsel, widget, GDK_CURRENT_TIME);
1609   return TRUE;
1610 }
1611
1612
1613 static GtkWidget*
1614 palette_new (GtkColorSelection *colorsel)
1615 {
1616   GtkWidget *retval;
1617
1618   static const GtkTargetEntry targets[] = {
1619     { "application/x-color", 0 }
1620   };
1621
1622   retval = gtk_drawing_area_new ();
1623
1624   gtk_widget_set_can_focus (retval, TRUE);
1625
1626   g_object_set_data (G_OBJECT (retval), I_("color_set"), GINT_TO_POINTER (0));
1627   gtk_widget_set_events (retval, GDK_BUTTON_PRESS_MASK
1628                          | GDK_BUTTON_RELEASE_MASK
1629                          | GDK_EXPOSURE_MASK
1630                          | GDK_ENTER_NOTIFY_MASK
1631                          | GDK_LEAVE_NOTIFY_MASK);
1632
1633   g_signal_connect (retval, "draw",
1634                     G_CALLBACK (palette_draw), colorsel);
1635   g_signal_connect (retval, "button-press-event",
1636                     G_CALLBACK (palette_press), colorsel);
1637   g_signal_connect (retval, "button-release-event",
1638                     G_CALLBACK (palette_release), colorsel);
1639   g_signal_connect (retval, "enter-notify-event",
1640                     G_CALLBACK (palette_enter), colorsel);
1641   g_signal_connect (retval, "leave-notify-event",
1642                     G_CALLBACK (palette_leave), colorsel);
1643   g_signal_connect (retval, "key-press-event",
1644                     G_CALLBACK (palette_activate), colorsel);
1645   g_signal_connect (retval, "popup-menu",
1646                     G_CALLBACK (palette_popup), colorsel);
1647
1648   gtk_drag_dest_set (retval,
1649                      GTK_DEST_DEFAULT_HIGHLIGHT |
1650                      GTK_DEST_DEFAULT_MOTION |
1651                      GTK_DEST_DEFAULT_DROP,
1652                      targets, 1,
1653                      GDK_ACTION_COPY);
1654
1655   g_signal_connect (retval, "drag-end",
1656                     G_CALLBACK (palette_drag_end), NULL);
1657   g_signal_connect (retval, "drag-data-received",
1658                     G_CALLBACK (palette_drop_handle), colorsel);
1659
1660   gtk_widget_set_tooltip_text (retval,
1661     _("Click this palette entry to make it the current color. "
1662       "To change this entry, drag a color swatch here or right-click "
1663       "it and select \"Save color here.\""));
1664   return retval;
1665 }
1666
1667
1668 /* The actual GtkColorSelection widget */
1669
1670 static GdkCursor *
1671 make_picker_cursor (GdkScreen *screen)
1672 {
1673   GdkCursor *cursor;
1674
1675   cursor = gdk_cursor_new_from_name (gdk_screen_get_display (screen),
1676                                      "color-picker");
1677
1678   if (!cursor)
1679     {
1680       GdkPixbuf *pixbuf;
1681
1682       pixbuf = gdk_pixbuf_new_from_data (dropper_bits,
1683                                          GDK_COLORSPACE_RGB, TRUE, 8,
1684                                          DROPPER_WIDTH, DROPPER_HEIGHT,
1685                                          DROPPER_STRIDE,
1686                                          NULL, NULL);
1687
1688       cursor = gdk_cursor_new_from_pixbuf (gdk_screen_get_display (screen),
1689                                            pixbuf,
1690                                            DROPPER_X_HOT, DROPPER_Y_HOT);
1691
1692       g_object_unref (pixbuf);
1693     }
1694
1695   return cursor;
1696 }
1697
1698 static void
1699 grab_color_at_pointer (GdkScreen *screen,
1700                        GdkDevice *device,
1701                        gint       x_root,
1702                        gint       y_root,
1703                        gpointer   data)
1704 {
1705   GdkPixbuf *pixbuf;
1706   guchar *pixels;
1707   GtkColorSelection *colorsel = data;
1708   GtkColorSelectionPrivate *priv;
1709   GdkColor color;
1710   GdkWindow *root_window = gdk_screen_get_root_window (screen);
1711
1712   priv = colorsel->private_data;
1713
1714   pixbuf = gdk_pixbuf_get_from_window (root_window,
1715                                        x_root, y_root,
1716                                        1, 1);
1717   if (!pixbuf)
1718     {
1719       gint x, y;
1720       GdkWindow *window = gdk_device_get_window_at_position (device, &x, &y);
1721       if (!window)
1722         return;
1723       pixbuf = gdk_pixbuf_get_from_window (window,
1724                                            x, y,
1725                                            1, 1);
1726       if (!pixbuf)
1727         return;
1728     }
1729   pixels = gdk_pixbuf_get_pixels (pixbuf);
1730   color.red = pixels[0] * 0x101;
1731   color.green = pixels[1] * 0x101;
1732   color.blue = pixels[2] * 0x101;
1733   g_object_unref (pixbuf);
1734
1735   priv->color[COLORSEL_RED] = SCALE (color.red);
1736   priv->color[COLORSEL_GREEN] = SCALE (color.green);
1737   priv->color[COLORSEL_BLUE] = SCALE (color.blue);
1738
1739   gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
1740                   priv->color[COLORSEL_GREEN],
1741                   priv->color[COLORSEL_BLUE],
1742                   &priv->color[COLORSEL_HUE],
1743                   &priv->color[COLORSEL_SATURATION],
1744                   &priv->color[COLORSEL_VALUE]);
1745
1746   update_color (colorsel);
1747 }
1748
1749 static void
1750 shutdown_eyedropper (GtkWidget *widget)
1751 {
1752   GtkColorSelection *colorsel;
1753   GtkColorSelectionPrivate *priv;
1754
1755   colorsel = GTK_COLOR_SELECTION (widget);
1756   priv = colorsel->private_data;
1757
1758   if (priv->has_grab)
1759     {
1760       gdk_device_ungrab (priv->keyboard_device, priv->grab_time);
1761       gdk_device_ungrab (priv->pointer_device, priv->grab_time);
1762       gtk_device_grab_remove (priv->dropper_grab_widget, priv->pointer_device);
1763
1764       priv->has_grab = FALSE;
1765       priv->keyboard_device = NULL;
1766       priv->pointer_device = NULL;
1767     }
1768 }
1769
1770 static void
1771 mouse_motion (GtkWidget      *invisible,
1772               GdkEventMotion *event,
1773               gpointer        data)
1774 {
1775   grab_color_at_pointer (gdk_event_get_screen ((GdkEvent *) event),
1776                          gdk_event_get_device ((GdkEvent *) event),
1777                          event->x_root, event->y_root, data);
1778 }
1779
1780 static gboolean
1781 mouse_release (GtkWidget      *invisible,
1782                GdkEventButton *event,
1783                gpointer        data)
1784 {
1785   /* GtkColorSelection *colorsel = data; */
1786
1787   if (event->button != 1)
1788     return FALSE;
1789
1790   grab_color_at_pointer (gdk_event_get_screen ((GdkEvent *) event),
1791                          gdk_event_get_device ((GdkEvent *) event),
1792                          event->x_root, event->y_root, data);
1793
1794   shutdown_eyedropper (GTK_WIDGET (data));
1795
1796   g_signal_handlers_disconnect_by_func (invisible,
1797                                         mouse_motion,
1798                                         data);
1799   g_signal_handlers_disconnect_by_func (invisible,
1800                                         mouse_release,
1801                                         data);
1802
1803   return TRUE;
1804 }
1805
1806 /* Helper Functions */
1807
1808 static gboolean
1809 key_press (GtkWidget   *invisible,
1810            GdkEventKey *event,
1811            gpointer     data)
1812 {
1813   GdkScreen *screen = gdk_event_get_screen ((GdkEvent *) event);
1814   GdkDevice *device, *pointer_device;
1815   guint state = event->state & gtk_accelerator_get_default_mod_mask ();
1816   gint x, y;
1817   gint dx, dy;
1818
1819   device = gdk_event_get_device ((GdkEvent * ) event);
1820   pointer_device = gdk_device_get_associated_device (device);
1821   gdk_device_get_position (pointer_device, NULL, &x, &y);
1822
1823   dx = 0;
1824   dy = 0;
1825
1826   switch (event->keyval)
1827     {
1828     case GDK_KEY_space:
1829     case GDK_KEY_Return:
1830     case GDK_KEY_ISO_Enter:
1831     case GDK_KEY_KP_Enter:
1832     case GDK_KEY_KP_Space:
1833       grab_color_at_pointer (screen, pointer_device, x, y, data);
1834       /* fall through */
1835
1836     case GDK_KEY_Escape:
1837       shutdown_eyedropper (data);
1838
1839       g_signal_handlers_disconnect_by_func (invisible,
1840                                             mouse_press,
1841                                             data);
1842       g_signal_handlers_disconnect_by_func (invisible,
1843                                             key_press,
1844                                             data);
1845
1846       return TRUE;
1847
1848 #if defined GDK_WINDOWING_X11 || defined GDK_WINDOWING_WIN32
1849     case GDK_KEY_Up:
1850     case GDK_KEY_KP_Up:
1851       dy = state == GDK_MOD1_MASK ? -BIG_STEP : -1;
1852       break;
1853
1854     case GDK_KEY_Down:
1855     case GDK_KEY_KP_Down:
1856       dy = state == GDK_MOD1_MASK ? BIG_STEP : 1;
1857       break;
1858
1859     case GDK_KEY_Left:
1860     case GDK_KEY_KP_Left:
1861       dx = state == GDK_MOD1_MASK ? -BIG_STEP : -1;
1862       break;
1863
1864     case GDK_KEY_Right:
1865     case GDK_KEY_KP_Right:
1866       dx = state == GDK_MOD1_MASK ? BIG_STEP : 1;
1867       break;
1868 #endif
1869
1870     default:
1871       return FALSE;
1872     }
1873
1874   gdk_device_warp (pointer_device, screen, x + dx, y + dy);
1875
1876   return TRUE;
1877
1878 }
1879
1880 static gboolean
1881 mouse_press (GtkWidget      *invisible,
1882              GdkEventButton *event,
1883              gpointer        data)
1884 {
1885   if (event->type == GDK_BUTTON_PRESS && event->button == 1)
1886     {
1887       g_signal_connect (invisible, "motion-notify-event",
1888                         G_CALLBACK (mouse_motion), data);
1889       g_signal_connect (invisible, "button-release-event",
1890                         G_CALLBACK (mouse_release), data);
1891       g_signal_handlers_disconnect_by_func (invisible,
1892                                             mouse_press,
1893                                             data);
1894       g_signal_handlers_disconnect_by_func (invisible,
1895                                             key_press,
1896                                             data);
1897       return TRUE;
1898     }
1899
1900   return FALSE;
1901 }
1902
1903 /* when the button is clicked */
1904 static void
1905 get_screen_color (GtkWidget *button)
1906 {
1907   GtkColorSelection *colorsel = g_object_get_data (G_OBJECT (button), "COLORSEL");
1908   GtkColorSelectionPrivate *priv = colorsel->private_data;
1909   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (button));
1910   GdkDevice *device, *keyb_device, *pointer_device;
1911   GdkCursor *picker_cursor;
1912   GdkGrabStatus grab_status;
1913   GdkWindow *window;
1914   GtkWidget *grab_widget, *toplevel;
1915
1916   guint32 time = gtk_get_current_event_time ();
1917
1918   device = gtk_get_current_event_device ();
1919
1920   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
1921     {
1922       keyb_device = device;
1923       pointer_device = gdk_device_get_associated_device (device);
1924     }
1925   else
1926     {
1927       pointer_device = device;
1928       keyb_device = gdk_device_get_associated_device (device);
1929     }
1930
1931   if (priv->dropper_grab_widget == NULL)
1932     {
1933       grab_widget = gtk_window_new (GTK_WINDOW_POPUP);
1934       gtk_window_set_screen (GTK_WINDOW (grab_widget), screen);
1935       gtk_window_resize (GTK_WINDOW (grab_widget), 1, 1);
1936       gtk_window_move (GTK_WINDOW (grab_widget), -100, -100);
1937       gtk_widget_show (grab_widget);
1938
1939       gtk_widget_add_events (grab_widget,
1940                              GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK);
1941
1942       toplevel = gtk_widget_get_toplevel (GTK_WIDGET (colorsel));
1943
1944       if (GTK_IS_WINDOW (toplevel))
1945         {
1946           if (gtk_window_has_group (GTK_WINDOW (toplevel)))
1947             gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
1948                                          GTK_WINDOW (grab_widget));
1949         }
1950
1951       priv->dropper_grab_widget = grab_widget;
1952     }
1953
1954   window = gtk_widget_get_window (priv->dropper_grab_widget);
1955
1956   if (gdk_device_grab (keyb_device,
1957                        window,
1958                        GDK_OWNERSHIP_APPLICATION, FALSE,
1959                        GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK,
1960                        NULL, time) != GDK_GRAB_SUCCESS)
1961     return;
1962
1963   picker_cursor = make_picker_cursor (screen);
1964   grab_status = gdk_device_grab (pointer_device,
1965                                  window,
1966                                  GDK_OWNERSHIP_APPLICATION,
1967                                  FALSE,
1968                                  GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK,
1969                                  picker_cursor,
1970                                  time);
1971   g_object_unref (picker_cursor);
1972
1973   if (grab_status != GDK_GRAB_SUCCESS)
1974     {
1975       gdk_device_ungrab (keyb_device, time);
1976       return;
1977     }
1978
1979   gtk_device_grab_add (priv->dropper_grab_widget,
1980                        pointer_device,
1981                        TRUE);
1982
1983   priv->grab_time = time;
1984   priv->has_grab = TRUE;
1985   priv->keyboard_device = keyb_device;
1986   priv->pointer_device = pointer_device;
1987
1988   g_signal_connect (priv->dropper_grab_widget, "button-press-event",
1989                     G_CALLBACK (mouse_press), colorsel);
1990   g_signal_connect (priv->dropper_grab_widget, "key-press-event",
1991                     G_CALLBACK (key_press), colorsel);
1992 }
1993
1994 static void
1995 hex_changed (GtkWidget *hex_entry,
1996              gpointer   data)
1997 {
1998   GtkColorSelection *colorsel;
1999   GtkColorSelectionPrivate *priv;
2000   GdkColor color;
2001   gchar *text;
2002
2003   colorsel = GTK_COLOR_SELECTION (data);
2004   priv = colorsel->private_data;
2005
2006   if (priv->changing)
2007     return;
2008
2009   text = gtk_editable_get_chars (GTK_EDITABLE (priv->hex_entry), 0, -1);
2010   if (gdk_color_parse (text, &color))
2011     {
2012       priv->color[COLORSEL_RED]   = CLAMP (color.red   / 65535.0, 0.0, 1.0);
2013       priv->color[COLORSEL_GREEN] = CLAMP (color.green / 65535.0, 0.0, 1.0);
2014       priv->color[COLORSEL_BLUE]  = CLAMP (color.blue  / 65535.0, 0.0, 1.0);
2015       gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
2016                       priv->color[COLORSEL_GREEN],
2017                       priv->color[COLORSEL_BLUE],
2018                       &priv->color[COLORSEL_HUE],
2019                       &priv->color[COLORSEL_SATURATION],
2020                       &priv->color[COLORSEL_VALUE]);
2021       update_color (colorsel);
2022     }
2023   g_free (text);
2024 }
2025
2026 static gboolean
2027 hex_focus_out (GtkWidget     *hex_entry,
2028                GdkEventFocus *event,
2029                gpointer       data)
2030 {
2031   hex_changed (hex_entry, data);
2032
2033   return FALSE;
2034 }
2035
2036 static void
2037 hsv_changed (GtkWidget *hsv,
2038              gpointer   data)
2039 {
2040   GtkColorSelection *colorsel;
2041   GtkColorSelectionPrivate *priv;
2042
2043   colorsel = GTK_COLOR_SELECTION (data);
2044   priv = colorsel->private_data;
2045
2046   if (priv->changing)
2047     return;
2048
2049   gtk_hsv_get_color (GTK_HSV (hsv),
2050                      &priv->color[COLORSEL_HUE],
2051                      &priv->color[COLORSEL_SATURATION],
2052                      &priv->color[COLORSEL_VALUE]);
2053   gtk_hsv_to_rgb (priv->color[COLORSEL_HUE],
2054                   priv->color[COLORSEL_SATURATION],
2055                   priv->color[COLORSEL_VALUE],
2056                   &priv->color[COLORSEL_RED],
2057                   &priv->color[COLORSEL_GREEN],
2058                   &priv->color[COLORSEL_BLUE]);
2059   update_color (colorsel);
2060 }
2061
2062 static void
2063 adjustment_changed (GtkAdjustment *adjustment,
2064                     gpointer       data)
2065 {
2066   GtkColorSelection *colorsel;
2067   GtkColorSelectionPrivate *priv;
2068
2069   colorsel = GTK_COLOR_SELECTION (g_object_get_data (G_OBJECT (adjustment), "COLORSEL"));
2070   priv = colorsel->private_data;
2071
2072   if (priv->changing)
2073     return;
2074
2075   switch (GPOINTER_TO_INT (data))
2076     {
2077     case COLORSEL_SATURATION:
2078     case COLORSEL_VALUE:
2079       priv->color[GPOINTER_TO_INT (data)] = gtk_adjustment_get_value (adjustment) / 100;
2080       gtk_hsv_to_rgb (priv->color[COLORSEL_HUE],
2081                       priv->color[COLORSEL_SATURATION],
2082                       priv->color[COLORSEL_VALUE],
2083                       &priv->color[COLORSEL_RED],
2084                       &priv->color[COLORSEL_GREEN],
2085                       &priv->color[COLORSEL_BLUE]);
2086       break;
2087     case COLORSEL_HUE:
2088       priv->color[GPOINTER_TO_INT (data)] = gtk_adjustment_get_value (adjustment) / 360;
2089       gtk_hsv_to_rgb (priv->color[COLORSEL_HUE],
2090                       priv->color[COLORSEL_SATURATION],
2091                       priv->color[COLORSEL_VALUE],
2092                       &priv->color[COLORSEL_RED],
2093                       &priv->color[COLORSEL_GREEN],
2094                       &priv->color[COLORSEL_BLUE]);
2095       break;
2096     case COLORSEL_RED:
2097     case COLORSEL_GREEN:
2098     case COLORSEL_BLUE:
2099       priv->color[GPOINTER_TO_INT (data)] = gtk_adjustment_get_value (adjustment) / 255;
2100
2101       gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
2102                       priv->color[COLORSEL_GREEN],
2103                       priv->color[COLORSEL_BLUE],
2104                       &priv->color[COLORSEL_HUE],
2105                       &priv->color[COLORSEL_SATURATION],
2106                       &priv->color[COLORSEL_VALUE]);
2107       break;
2108     default:
2109       priv->color[GPOINTER_TO_INT (data)] = gtk_adjustment_get_value (adjustment) / 255;
2110       break;
2111     }
2112   update_color (colorsel);
2113 }
2114
2115 static void
2116 opacity_entry_changed (GtkWidget *opacity_entry,
2117                        gpointer   data)
2118 {
2119   GtkColorSelection *colorsel;
2120   GtkColorSelectionPrivate *priv;
2121   GtkAdjustment *adj;
2122   gchar *text;
2123
2124   colorsel = GTK_COLOR_SELECTION (data);
2125   priv = colorsel->private_data;
2126
2127   if (priv->changing)
2128     return;
2129
2130   text = gtk_editable_get_chars (GTK_EDITABLE (priv->opacity_entry), 0, -1);
2131   adj = gtk_range_get_adjustment (GTK_RANGE (priv->opacity_slider));
2132   gtk_adjustment_set_value (adj, g_strtod (text, NULL));
2133
2134   update_color (colorsel);
2135
2136   g_free (text);
2137 }
2138
2139 static void
2140 make_label_spinbutton (GtkColorSelection *colorsel,
2141                        GtkWidget        **spinbutton,
2142                        gchar             *text,
2143                        GtkWidget         *table,
2144                        gint               i,
2145                        gint               j,
2146                        gint               channel_type,
2147                        const gchar       *tooltip)
2148 {
2149   GtkWidget *label;
2150   GtkAdjustment *adjust;
2151
2152   if (channel_type == COLORSEL_HUE)
2153     {
2154       adjust = gtk_adjustment_new (0.0, 0.0, 360.0, 1.0, 1.0, 0.0);
2155     }
2156   else if (channel_type == COLORSEL_SATURATION ||
2157            channel_type == COLORSEL_VALUE)
2158     {
2159       adjust = gtk_adjustment_new (0.0, 0.0, 100.0, 1.0, 1.0, 0.0);
2160     }
2161   else
2162     {
2163       adjust = gtk_adjustment_new (0.0, 0.0, 255.0, 1.0, 1.0, 0.0);
2164     }
2165   g_object_set_data (G_OBJECT (adjust), I_("COLORSEL"), colorsel);
2166   *spinbutton = gtk_spin_button_new (adjust, 10.0, 0);
2167
2168   gtk_widget_set_tooltip_text (*spinbutton, tooltip);
2169
2170   g_signal_connect (adjust, "value-changed",
2171                     G_CALLBACK (adjustment_changed),
2172                     GINT_TO_POINTER (channel_type));
2173   label = gtk_label_new_with_mnemonic (text);
2174   gtk_label_set_mnemonic_widget (GTK_LABEL (label), *spinbutton);
2175
2176   gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
2177   gtk_table_attach_defaults (GTK_TABLE (table), label, i, i+1, j, j+1);
2178   gtk_table_attach_defaults (GTK_TABLE (table), *spinbutton, i+1, i+2, j, j+1);
2179 }
2180
2181 static void
2182 make_palette_frame (GtkColorSelection *colorsel,
2183                     GtkWidget         *table,
2184                     gint               i,
2185                     gint               j)
2186 {
2187   GtkWidget *frame;
2188   GtkColorSelectionPrivate *priv;
2189
2190   priv = colorsel->private_data;
2191   frame = gtk_frame_new (NULL);
2192   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
2193   priv->custom_palette[i][j] = palette_new (colorsel);
2194   gtk_widget_set_size_request (priv->custom_palette[i][j], CUSTOM_PALETTE_ENTRY_WIDTH, CUSTOM_PALETTE_ENTRY_HEIGHT);
2195   gtk_container_add (GTK_CONTAINER (frame), priv->custom_palette[i][j]);
2196   gtk_table_attach_defaults (GTK_TABLE (table), frame, i, i+1, j, j+1);
2197 }
2198
2199 /* Set the palette entry [x][y] to be the currently selected one. */
2200 static void
2201 set_selected_palette (GtkColorSelection *colorsel, int x, int y)
2202 {
2203   GtkColorSelectionPrivate *priv = colorsel->private_data;
2204
2205   gtk_widget_grab_focus (priv->custom_palette[x][y]);
2206 }
2207
2208 static double
2209 scale_round (double val, double factor)
2210 {
2211   val = floor (val * factor + 0.5);
2212   val = MAX (val, 0);
2213   val = MIN (val, factor);
2214   return val;
2215 }
2216
2217 static void
2218 update_color (GtkColorSelection *colorsel)
2219 {
2220   GtkColorSelectionPrivate *priv = colorsel->private_data;
2221   gchar entryval[12];
2222   gchar opacity_text[32];
2223   gchar *ptr;
2224
2225   priv->changing = TRUE;
2226   color_sample_update_samples (colorsel);
2227
2228   gtk_hsv_set_color (GTK_HSV (priv->triangle_colorsel),
2229                      priv->color[COLORSEL_HUE],
2230                      priv->color[COLORSEL_SATURATION],
2231                      priv->color[COLORSEL_VALUE]);
2232   gtk_adjustment_set_value (gtk_spin_button_get_adjustment
2233                             (GTK_SPIN_BUTTON (priv->hue_spinbutton)),
2234                             scale_round (priv->color[COLORSEL_HUE], 360));
2235   gtk_adjustment_set_value (gtk_spin_button_get_adjustment
2236                             (GTK_SPIN_BUTTON (priv->sat_spinbutton)),
2237                             scale_round (priv->color[COLORSEL_SATURATION], 100));
2238   gtk_adjustment_set_value (gtk_spin_button_get_adjustment
2239                             (GTK_SPIN_BUTTON (priv->val_spinbutton)),
2240                             scale_round (priv->color[COLORSEL_VALUE], 100));
2241   gtk_adjustment_set_value (gtk_spin_button_get_adjustment
2242                             (GTK_SPIN_BUTTON (priv->red_spinbutton)),
2243                             scale_round (priv->color[COLORSEL_RED], 255));
2244   gtk_adjustment_set_value (gtk_spin_button_get_adjustment
2245                             (GTK_SPIN_BUTTON (priv->green_spinbutton)),
2246                             scale_round (priv->color[COLORSEL_GREEN], 255));
2247   gtk_adjustment_set_value (gtk_spin_button_get_adjustment
2248                             (GTK_SPIN_BUTTON (priv->blue_spinbutton)),
2249                             scale_round (priv->color[COLORSEL_BLUE], 255));
2250   gtk_adjustment_set_value (gtk_range_get_adjustment
2251                             (GTK_RANGE (priv->opacity_slider)),
2252                             scale_round (priv->color[COLORSEL_OPACITY], 255));
2253
2254   g_snprintf (opacity_text, 32, "%.0f", scale_round (priv->color[COLORSEL_OPACITY], 255));
2255   gtk_entry_set_text (GTK_ENTRY (priv->opacity_entry), opacity_text);
2256
2257   g_snprintf (entryval, 11, "#%2X%2X%2X",
2258               (guint) (scale_round (priv->color[COLORSEL_RED], 255)),
2259               (guint) (scale_round (priv->color[COLORSEL_GREEN], 255)),
2260               (guint) (scale_round (priv->color[COLORSEL_BLUE], 255)));
2261
2262   for (ptr = entryval; *ptr; ptr++)
2263     if (*ptr == ' ')
2264       *ptr = '0';
2265   gtk_entry_set_text (GTK_ENTRY (priv->hex_entry), entryval);
2266   priv->changing = FALSE;
2267
2268   g_object_ref (colorsel);
2269
2270   g_signal_emit (colorsel, color_selection_signals[COLOR_CHANGED], 0);
2271
2272   g_object_freeze_notify (G_OBJECT (colorsel));
2273   g_object_notify (G_OBJECT (colorsel), "current-color");
2274   g_object_notify (G_OBJECT (colorsel), "current-alpha");
2275   g_object_thaw_notify (G_OBJECT (colorsel));
2276
2277   g_object_unref (colorsel);
2278 }
2279
2280 static void
2281 update_palette (GtkColorSelection *colorsel)
2282 {
2283   GdkColor *current_colors;
2284   gint i, j;
2285
2286   current_colors = get_current_colors (colorsel);
2287
2288   for (i = 0; i < GTK_CUSTOM_PALETTE_HEIGHT; i++)
2289     {
2290       for (j = 0; j < GTK_CUSTOM_PALETTE_WIDTH; j++)
2291         {
2292           gint index;
2293
2294           index = i * GTK_CUSTOM_PALETTE_WIDTH + j;
2295
2296           gtk_color_selection_set_palette_color (colorsel,
2297                                                  index,
2298                                                  &current_colors[index]);
2299         }
2300     }
2301
2302   g_free (current_colors);
2303 }
2304
2305 static void
2306 palette_change_notify_instance (GObject    *object,
2307                                 GParamSpec *pspec,
2308                                 gpointer    data)
2309 {
2310   update_palette (GTK_COLOR_SELECTION (data));
2311 }
2312
2313 static void
2314 default_noscreen_change_palette_func (const GdkColor *colors,
2315                                       gint            n_colors)
2316 {
2317   default_change_palette_func (gdk_screen_get_default (), colors, n_colors);
2318 }
2319
2320 static void
2321 default_change_palette_func (GdkScreen      *screen,
2322                              const GdkColor *colors,
2323                              gint            n_colors)
2324 {
2325   gchar *str;
2326
2327   str = gtk_color_selection_palette_to_string (colors, n_colors);
2328
2329   gtk_settings_set_string_property (gtk_settings_get_for_screen (screen),
2330                                     "gtk-color-palette",
2331                                     str,
2332                                     "gtk_color_selection_palette_to_string");
2333
2334   g_free (str);
2335 }
2336
2337 /**
2338  * gtk_color_selection_new:
2339  *
2340  * Creates a new GtkColorSelection.
2341  *
2342  * Return value: a new #GtkColorSelection
2343  */
2344 GtkWidget *
2345 gtk_color_selection_new (void)
2346 {
2347   GtkColorSelection *colorsel;
2348   GtkColorSelectionPrivate *priv;
2349   gdouble color[4];
2350   color[0] = 1.0;
2351   color[1] = 1.0;
2352   color[2] = 1.0;
2353   color[3] = 1.0;
2354
2355   colorsel = g_object_new (GTK_TYPE_COLOR_SELECTION, NULL);
2356   priv = colorsel->private_data;
2357   set_color_internal (colorsel, color);
2358   gtk_color_selection_set_has_opacity_control (colorsel, TRUE);
2359
2360   /* We want to make sure that default_set is FALSE.
2361    * This way the user can still set it.
2362    */
2363   priv->default_set = FALSE;
2364   priv->default_alpha_set = FALSE;
2365
2366   return GTK_WIDGET (colorsel);
2367 }
2368
2369 /**
2370  * gtk_color_selection_get_has_opacity_control:
2371  * @colorsel: a #GtkColorSelection
2372  *
2373  * Determines whether the colorsel has an opacity control.
2374  *
2375  * Return value: %TRUE if the @colorsel has an opacity control,
2376  *     %FALSE if it does't
2377  */
2378 gboolean
2379 gtk_color_selection_get_has_opacity_control (GtkColorSelection *colorsel)
2380 {
2381   GtkColorSelectionPrivate *priv;
2382
2383   g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), FALSE);
2384
2385   priv = colorsel->private_data;
2386
2387   return priv->has_opacity;
2388 }
2389
2390 /**
2391  * gtk_color_selection_set_has_opacity_control:
2392  * @colorsel: a #GtkColorSelection
2393  * @has_opacity: %TRUE if @colorsel can set the opacity, %FALSE otherwise
2394  *
2395  * Sets the @colorsel to use or not use opacity.
2396  */
2397 void
2398 gtk_color_selection_set_has_opacity_control (GtkColorSelection *colorsel,
2399                                              gboolean           has_opacity)
2400 {
2401   GtkColorSelectionPrivate *priv;
2402
2403   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2404
2405   priv = colorsel->private_data;
2406   has_opacity = has_opacity != FALSE;
2407
2408   if (priv->has_opacity != has_opacity)
2409     {
2410       priv->has_opacity = has_opacity;
2411       if (has_opacity)
2412         {
2413           gtk_widget_show (priv->opacity_slider);
2414           gtk_widget_show (priv->opacity_label);
2415           gtk_widget_show (priv->opacity_entry);
2416         }
2417       else
2418         {
2419           gtk_widget_hide (priv->opacity_slider);
2420           gtk_widget_hide (priv->opacity_label);
2421           gtk_widget_hide (priv->opacity_entry);
2422         }
2423       color_sample_update_samples (colorsel);
2424
2425       g_object_notify (G_OBJECT (colorsel), "has-opacity-control");
2426     }
2427 }
2428
2429 /**
2430  * gtk_color_selection_get_has_palette:
2431  * @colorsel: a #GtkColorSelection
2432  *
2433  * Determines whether the color selector has a color palette.
2434  *
2435  * Return value: %TRUE if the selector has a palette, %FALSE if it hasn't
2436  */
2437 gboolean
2438 gtk_color_selection_get_has_palette (GtkColorSelection *colorsel)
2439 {
2440   GtkColorSelectionPrivate *priv;
2441
2442   g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), FALSE);
2443
2444   priv = colorsel->private_data;
2445
2446   return priv->has_palette;
2447 }
2448
2449 /**
2450  * gtk_color_selection_set_has_palette:
2451  * @colorsel: a #GtkColorSelection
2452  * @has_palette: %TRUE if palette is to be visible, %FALSE otherwise
2453  *
2454  * Shows and hides the palette based upon the value of @has_palette.
2455  */
2456 void
2457 gtk_color_selection_set_has_palette (GtkColorSelection *colorsel,
2458                                      gboolean           has_palette)
2459 {
2460   GtkColorSelectionPrivate *priv;
2461   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2462
2463   priv = colorsel->private_data;
2464   has_palette = has_palette != FALSE;
2465
2466   if (priv->has_palette != has_palette)
2467     {
2468       priv->has_palette = has_palette;
2469       if (has_palette)
2470         gtk_widget_show (priv->palette_frame);
2471       else
2472         gtk_widget_hide (priv->palette_frame);
2473
2474       update_tooltips (colorsel);
2475
2476       g_object_notify (G_OBJECT (colorsel), "has-palette");
2477     }
2478 }
2479
2480 /**
2481  * gtk_color_selection_set_current_color:
2482  * @colorsel: a #GtkColorSelection
2483  * @color: a #GdkColor to set the current color with
2484  *
2485  * Sets the current color to be @color.
2486  *
2487  * The first time this is called, it will also set
2488  * the original color to be @color too.
2489  */
2490 void
2491 gtk_color_selection_set_current_color (GtkColorSelection *colorsel,
2492                                        const GdkColor    *color)
2493 {
2494   GtkColorSelectionPrivate *priv;
2495   gint i;
2496
2497   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2498   g_return_if_fail (color != NULL);
2499
2500   priv = colorsel->private_data;
2501   priv->changing = TRUE;
2502   priv->color[COLORSEL_RED] = SCALE (color->red);
2503   priv->color[COLORSEL_GREEN] = SCALE (color->green);
2504   priv->color[COLORSEL_BLUE] = SCALE (color->blue);
2505   gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
2506                   priv->color[COLORSEL_GREEN],
2507                   priv->color[COLORSEL_BLUE],
2508                   &priv->color[COLORSEL_HUE],
2509                   &priv->color[COLORSEL_SATURATION],
2510                   &priv->color[COLORSEL_VALUE]);
2511   if (priv->default_set == FALSE)
2512     {
2513       for (i = 0; i < COLORSEL_NUM_CHANNELS; i++)
2514         priv->old_color[i] = priv->color[i];
2515     }
2516   priv->default_set = TRUE;
2517   update_color (colorsel);
2518 }
2519
2520 /**
2521  * gtk_color_selection_set_current_alpha:
2522  * @colorsel: a #GtkColorSelection
2523  * @alpha: an integer between 0 and 65535
2524  *
2525  * Sets the current opacity to be @alpha.
2526  *
2527  * The first time this is called, it will also set
2528  * the original opacity to be @alpha too.
2529  */
2530 void
2531 gtk_color_selection_set_current_alpha (GtkColorSelection *colorsel,
2532                                        guint16            alpha)
2533 {
2534   GtkColorSelectionPrivate *priv;
2535   gint i;
2536
2537   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2538
2539   priv = colorsel->private_data;
2540   priv->changing = TRUE;
2541   priv->color[COLORSEL_OPACITY] = SCALE (alpha);
2542   if (priv->default_alpha_set == FALSE)
2543     {
2544       for (i = 0; i < COLORSEL_NUM_CHANNELS; i++)
2545         priv->old_color[i] = priv->color[i];
2546     }
2547   priv->default_alpha_set = TRUE;
2548   update_color (colorsel);
2549 }
2550
2551 /**
2552  * gtk_color_selection_get_current_color:
2553  * @colorsel: a #GtkColorSelection
2554  * @color: (out): a #GdkColor to fill in with the current color
2555  *
2556  * Sets @color to be the current color in the GtkColorSelection widget.
2557  */
2558 void
2559 gtk_color_selection_get_current_color (GtkColorSelection *colorsel,
2560                                        GdkColor          *color)
2561 {
2562   GtkColorSelectionPrivate *priv;
2563
2564   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2565   g_return_if_fail (color != NULL);
2566
2567   priv = colorsel->private_data;
2568   color->red = UNSCALE (priv->color[COLORSEL_RED]);
2569   color->green = UNSCALE (priv->color[COLORSEL_GREEN]);
2570   color->blue = UNSCALE (priv->color[COLORSEL_BLUE]);
2571 }
2572
2573 /**
2574  * gtk_color_selection_get_current_alpha:
2575  * @colorsel: a #GtkColorSelection
2576  *
2577  * Returns the current alpha value.
2578  *
2579  * Return value: an integer between 0 and 65535
2580  */
2581 guint16
2582 gtk_color_selection_get_current_alpha (GtkColorSelection *colorsel)
2583 {
2584   GtkColorSelectionPrivate *priv;
2585
2586   g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), 0);
2587
2588   priv = colorsel->private_data;
2589   return priv->has_opacity ? UNSCALE (priv->color[COLORSEL_OPACITY]) : 65535;
2590 }
2591
2592 /**
2593  * gtk_color_selection_set_previous_color:
2594  * @colorsel: a #GtkColorSelection
2595  * @color: a #GdkColor to set the previous color with
2596  *
2597  * Sets the 'previous' color to be @color.
2598  *
2599  * This function should be called with some hesitations,
2600  * as it might seem confusing to have that color change.
2601  * Calling gtk_color_selection_set_current_color() will also
2602  * set this color the first time it is called.
2603  */
2604 void
2605 gtk_color_selection_set_previous_color (GtkColorSelection *colorsel,
2606                                         const GdkColor    *color)
2607 {
2608   GtkColorSelectionPrivate *priv;
2609
2610   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2611   g_return_if_fail (color != NULL);
2612
2613   priv = colorsel->private_data;
2614   priv->changing = TRUE;
2615   priv->old_color[COLORSEL_RED] = SCALE (color->red);
2616   priv->old_color[COLORSEL_GREEN] = SCALE (color->green);
2617   priv->old_color[COLORSEL_BLUE] = SCALE (color->blue);
2618   gtk_rgb_to_hsv (priv->old_color[COLORSEL_RED],
2619                   priv->old_color[COLORSEL_GREEN],
2620                   priv->old_color[COLORSEL_BLUE],
2621                   &priv->old_color[COLORSEL_HUE],
2622                   &priv->old_color[COLORSEL_SATURATION],
2623                   &priv->old_color[COLORSEL_VALUE]);
2624   color_sample_update_samples (colorsel);
2625   priv->default_set = TRUE;
2626   priv->changing = FALSE;
2627 }
2628
2629 /**
2630  * gtk_color_selection_set_previous_alpha:
2631  * @colorsel: a #GtkColorSelection
2632  * @alpha: an integer between 0 and 65535
2633  *
2634  * Sets the 'previous' alpha to be @alpha.
2635  *
2636  * This function should be called with some hesitations,
2637  * as it might seem confusing to have that alpha change.
2638  */
2639 void
2640 gtk_color_selection_set_previous_alpha (GtkColorSelection *colorsel,
2641                                         guint16            alpha)
2642 {
2643   GtkColorSelectionPrivate *priv;
2644
2645   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2646
2647   priv = colorsel->private_data;
2648   priv->changing = TRUE;
2649   priv->old_color[COLORSEL_OPACITY] = SCALE (alpha);
2650   color_sample_update_samples (colorsel);
2651   priv->default_alpha_set = TRUE;
2652   priv->changing = FALSE;
2653 }
2654
2655
2656 /**
2657  * gtk_color_selection_get_previous_color:
2658  * @colorsel: a #GtkColorSelection
2659  * @color: (out): a #GdkColor to fill in with the original color value
2660  *
2661  * Fills @color in with the original color value.
2662  */
2663 void
2664 gtk_color_selection_get_previous_color (GtkColorSelection *colorsel,
2665                                         GdkColor           *color)
2666 {
2667   GtkColorSelectionPrivate *priv;
2668
2669   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2670   g_return_if_fail (color != NULL);
2671
2672   priv = colorsel->private_data;
2673   color->red = UNSCALE (priv->old_color[COLORSEL_RED]);
2674   color->green = UNSCALE (priv->old_color[COLORSEL_GREEN]);
2675   color->blue = UNSCALE (priv->old_color[COLORSEL_BLUE]);
2676 }
2677
2678 /**
2679  * gtk_color_selection_get_previous_alpha:
2680  * @colorsel: a #GtkColorSelection
2681  *
2682  * Returns the previous alpha value.
2683  *
2684  * Return value: an integer between 0 and 65535
2685  */
2686 guint16
2687 gtk_color_selection_get_previous_alpha (GtkColorSelection *colorsel)
2688 {
2689   GtkColorSelectionPrivate *priv;
2690
2691   g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), 0);
2692
2693   priv = colorsel->private_data;
2694   return priv->has_opacity ? UNSCALE (priv->old_color[COLORSEL_OPACITY]) : 65535;
2695 }
2696
2697 /**
2698  * gtk_color_selection_set_current_rgba:
2699  * @colorsel: a #GtkColorSelection
2700  * @rgba: A #GdkRGBA to set the current color with
2701  *
2702  * Sets the current color to be @rgba.
2703  *
2704  * The first time this is called, it will also set
2705  * the original color to be @rgba too.
2706  *
2707  * Since: 3.0
2708  */
2709 void
2710 gtk_color_selection_set_current_rgba (GtkColorSelection *colorsel,
2711                                       const GdkRGBA     *rgba)
2712 {
2713   GtkColorSelectionPrivate *priv;
2714   gint i;
2715
2716   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2717   g_return_if_fail (rgba != NULL);
2718
2719   priv = colorsel->private_data;
2720   priv->changing = TRUE;
2721
2722   priv->color[COLORSEL_RED] = CLAMP (rgba->red, 0, 1);
2723   priv->color[COLORSEL_GREEN] = CLAMP (rgba->green, 0, 1);
2724   priv->color[COLORSEL_BLUE] = CLAMP (rgba->blue, 0, 1);
2725   priv->color[COLORSEL_OPACITY] = CLAMP (rgba->alpha, 0, 1);
2726
2727   gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
2728                   priv->color[COLORSEL_GREEN],
2729                   priv->color[COLORSEL_BLUE],
2730                   &priv->color[COLORSEL_HUE],
2731                   &priv->color[COLORSEL_SATURATION],
2732                   &priv->color[COLORSEL_VALUE]);
2733
2734   if (priv->default_set == FALSE)
2735     {
2736       for (i = 0; i < COLORSEL_NUM_CHANNELS; i++)
2737         priv->old_color[i] = priv->color[i];
2738     }
2739
2740   priv->default_set = TRUE;
2741   update_color (colorsel);
2742 }
2743
2744 /**
2745  * gtk_color_selection_get_current_rgba:
2746  * @colorsel: a #GtkColorSelection
2747  * @rgba: (out): a #GdkRGBA to fill in with the current color
2748  *
2749  * Sets @rgba to be the current color in the GtkColorSelection widget.
2750  *
2751  * Since: 3.0
2752  */
2753 void
2754 gtk_color_selection_get_current_rgba (GtkColorSelection *colorsel,
2755                                       GdkRGBA           *rgba)
2756 {
2757   GtkColorSelectionPrivate *priv;
2758
2759   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2760   g_return_if_fail (rgba != NULL);
2761
2762   priv = colorsel->private_data;
2763   rgba->red = priv->color[COLORSEL_RED];
2764   rgba->green = priv->color[COLORSEL_GREEN];
2765   rgba->blue = priv->color[COLORSEL_BLUE];
2766   rgba->alpha = (priv->has_opacity) ? priv->color[COLORSEL_OPACITY] : 1;
2767 }
2768
2769 /**
2770  * gtk_color_selection_set_previous_rgba:
2771  * @colorsel: a #GtkColorSelection
2772  * @rgba: a #GdkRGBA to set the previous color with
2773  *
2774  * Sets the 'previous' color to be @rgba.
2775  *
2776  * This function should be called with some hesitations,
2777  * as it might seem confusing to have that color change.
2778  * Calling gtk_color_selection_set_current_rgba() will also
2779  * set this color the first time it is called.
2780  *
2781  * Since: 3.0
2782  */
2783 void
2784 gtk_color_selection_set_previous_rgba (GtkColorSelection *colorsel,
2785                                        const GdkRGBA     *rgba)
2786 {
2787   GtkColorSelectionPrivate *priv;
2788
2789   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2790   g_return_if_fail (rgba != NULL);
2791
2792   priv = colorsel->private_data;
2793   priv->changing = TRUE;
2794
2795   priv->old_color[COLORSEL_RED] = CLAMP (rgba->red, 0, 1);
2796   priv->old_color[COLORSEL_GREEN] = CLAMP (rgba->green, 0, 1);
2797   priv->old_color[COLORSEL_BLUE] = CLAMP (rgba->blue, 0, 1);
2798   priv->old_color[COLORSEL_OPACITY] = CLAMP (rgba->alpha, 0, 1);
2799
2800   gtk_rgb_to_hsv (priv->old_color[COLORSEL_RED],
2801                   priv->old_color[COLORSEL_GREEN],
2802                   priv->old_color[COLORSEL_BLUE],
2803                   &priv->old_color[COLORSEL_HUE],
2804                   &priv->old_color[COLORSEL_SATURATION],
2805                   &priv->old_color[COLORSEL_VALUE]);
2806
2807   color_sample_update_samples (colorsel);
2808   priv->default_set = TRUE;
2809   priv->changing = FALSE;
2810 }
2811
2812 /**
2813  * gtk_color_selection_get_previous_rgba:
2814  * @colorsel: a #GtkColorSelection
2815  * @rgba: (out): a #GdkRGBA to fill in with the original color value
2816  *
2817  * Fills @rgba in with the original color value.
2818  *
2819  * Since: 3.0
2820  */
2821 void
2822 gtk_color_selection_get_previous_rgba (GtkColorSelection *colorsel,
2823                                        GdkRGBA           *rgba)
2824 {
2825   GtkColorSelectionPrivate *priv;
2826
2827   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2828   g_return_if_fail (rgba != NULL);
2829
2830   priv = colorsel->private_data;
2831   rgba->red = priv->old_color[COLORSEL_RED];
2832   rgba->green = priv->old_color[COLORSEL_GREEN];
2833   rgba->blue = priv->old_color[COLORSEL_BLUE];
2834   rgba->alpha = (priv->has_opacity) ? priv->old_color[COLORSEL_OPACITY] : 1;
2835 }
2836
2837 /**
2838  * gtk_color_selection_set_palette_color:
2839  * @colorsel: a #GtkColorSelection
2840  * @index: the color index of the palette
2841  * @color: A #GdkColor to set the palette with
2842  *
2843  * Sets the palette located at @index to have @color as its color.
2844  */
2845 static void
2846 gtk_color_selection_set_palette_color (GtkColorSelection *colorsel,
2847                                        gint               index,
2848                                        GdkColor          *color)
2849 {
2850   GtkColorSelectionPrivate *priv;
2851   gint x, y;
2852   gdouble col[3];
2853
2854   g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
2855   g_return_if_fail (index >= 0  && index < GTK_CUSTOM_PALETTE_WIDTH*GTK_CUSTOM_PALETTE_HEIGHT);
2856
2857   x = index % GTK_CUSTOM_PALETTE_WIDTH;
2858   y = index / GTK_CUSTOM_PALETTE_WIDTH;
2859
2860   priv = colorsel->private_data;
2861   col[0] = SCALE (color->red);
2862   col[1] = SCALE (color->green);
2863   col[2] = SCALE (color->blue);
2864
2865   palette_set_color (priv->custom_palette[x][y], colorsel, col);
2866 }
2867
2868 /**
2869  * gtk_color_selection_is_adjusting:
2870  * @colorsel: a #GtkColorSelection
2871  *
2872  * Gets the current state of the @colorsel.
2873  *
2874  * Return value: %TRUE if the user is currently dragging
2875  *     a color around, and %FALSE if the selection has stopped
2876  */
2877 gboolean
2878 gtk_color_selection_is_adjusting (GtkColorSelection *colorsel)
2879 {
2880   GtkColorSelectionPrivate *priv;
2881
2882   g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), FALSE);
2883
2884   priv = colorsel->private_data;
2885
2886   return (gtk_hsv_is_adjusting (GTK_HSV (priv->triangle_colorsel)));
2887 }
2888
2889
2890 /**
2891  * gtk_color_selection_palette_from_string:
2892  * @str: a string encoding a color palette
2893  * @colors: (out) (array length=n_colors): return location for
2894  *     allocated array of #GdkColor
2895  * @n_colors: return location for length of array
2896  *
2897  * Parses a color palette string; the string is a colon-separated
2898  * list of color names readable by gdk_color_parse().
2899  *
2900  * Return value: %TRUE if a palette was successfully parsed
2901  */
2902 gboolean
2903 gtk_color_selection_palette_from_string (const gchar  *str,
2904                                          GdkColor    **colors,
2905                                          gint         *n_colors)
2906 {
2907   GdkColor *retval;
2908   gint count;
2909   gchar *p;
2910   gchar *start;
2911   gchar *copy;
2912
2913   count = 0;
2914   retval = NULL;
2915   copy = g_strdup (str);
2916
2917   start = copy;
2918   p = copy;
2919   while (TRUE)
2920     {
2921       if (*p == ':' || *p == '\0')
2922         {
2923           gboolean done = TRUE;
2924
2925           if (start == p)
2926             {
2927               goto failed; /* empty entry */
2928             }
2929
2930           if (*p)
2931             {
2932               *p = '\0';
2933               done = FALSE;
2934             }
2935
2936           retval = g_renew (GdkColor, retval, count + 1);
2937           if (!gdk_color_parse (start, retval + count))
2938             {
2939               goto failed;
2940             }
2941
2942           ++count;
2943
2944           if (done)
2945             break;
2946           else
2947             start = p + 1;
2948         }
2949
2950       ++p;
2951     }
2952
2953   g_free (copy);
2954
2955   if (colors)
2956     *colors = retval;
2957   else
2958     g_free (retval);
2959
2960   if (n_colors)
2961     *n_colors = count;
2962
2963   return TRUE;
2964
2965  failed:
2966   g_free (copy);
2967   g_free (retval);
2968
2969   if (colors)
2970     *colors = NULL;
2971   if (n_colors)
2972     *n_colors = 0;
2973
2974   return FALSE;
2975 }
2976
2977 /**
2978  * gtk_color_selection_palette_to_string:
2979  * @colors: (array length=n_colors): an array of colors
2980  * @n_colors: length of the array
2981  *
2982  * Encodes a palette as a string, useful for persistent storage.
2983  *
2984  * Return value: allocated string encoding the palette
2985  */
2986 gchar*
2987 gtk_color_selection_palette_to_string (const GdkColor *colors,
2988                                        gint            n_colors)
2989 {
2990   gint i;
2991   gchar **strs = NULL;
2992   gchar *retval;
2993
2994   if (n_colors == 0)
2995     return g_strdup ("");
2996
2997   strs = g_new0 (gchar*, n_colors + 1);
2998
2999   i = 0;
3000   while (i < n_colors)
3001     {
3002       gchar *ptr;
3003
3004       strs[i] =
3005         g_strdup_printf ("#%2X%2X%2X",
3006                          colors[i].red / 256,
3007                          colors[i].green / 256,
3008                          colors[i].blue / 256);
3009
3010       for (ptr = strs[i]; *ptr; ptr++)
3011         if (*ptr == ' ')
3012           *ptr = '0';
3013
3014       ++i;
3015     }
3016
3017   retval = g_strjoinv (":", strs);
3018
3019   g_strfreev (strs);
3020
3021   return retval;
3022 }
3023
3024 /**
3025  * gtk_color_selection_set_change_palette_with_screen_hook: (skip)
3026  * @func: a function to call when the custom palette needs saving
3027  *
3028  * Installs a global function to be called whenever the user
3029  * tries to modify the palette in a color selection.
3030  *
3031  * This function should save the new palette contents, and update
3032  * the #GtkSettings::gtk-color-palette GtkSettings property so all
3033  * GtkColorSelection widgets will be modified.
3034  *
3035  * Return value: the previous change palette hook (that was replaced)
3036  *
3037  * Since: 2.2
3038  */
3039 GtkColorSelectionChangePaletteWithScreenFunc
3040 gtk_color_selection_set_change_palette_with_screen_hook (GtkColorSelectionChangePaletteWithScreenFunc func)
3041 {
3042   GtkColorSelectionChangePaletteWithScreenFunc old;
3043
3044   old = change_palette_hook;
3045
3046   change_palette_hook = func;
3047
3048   return old;
3049 }
3050
3051 static void
3052 make_control_relations (AtkObject *atk_obj,
3053                         GtkWidget *widget)
3054 {
3055   AtkObject *obj;
3056
3057   obj = gtk_widget_get_accessible (widget);
3058   atk_object_add_relationship (atk_obj, ATK_RELATION_CONTROLLED_BY, obj);
3059   atk_object_add_relationship (obj, ATK_RELATION_CONTROLLER_FOR, atk_obj);
3060 }
3061
3062 static void
3063 make_all_relations (AtkObject                *atk_obj,
3064                     GtkColorSelectionPrivate *priv)
3065 {
3066   make_control_relations (atk_obj, priv->hue_spinbutton);
3067   make_control_relations (atk_obj, priv->sat_spinbutton);
3068   make_control_relations (atk_obj, priv->val_spinbutton);
3069   make_control_relations (atk_obj, priv->red_spinbutton);
3070   make_control_relations (atk_obj, priv->green_spinbutton);
3071   make_control_relations (atk_obj, priv->blue_spinbutton);
3072 }