gtkcolorswatch.c 24 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14
/* GTK - The GIMP Toolkit
 * Copyright (C) 2012 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
Javier Jardon's avatar
Javier Jardon committed
15
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
16 17 18 19
 */

#include "config.h"

20
#include "gtkcolorswatchprivate.h"
Matthias Clasen's avatar
Matthias Clasen committed
21

22
#include "gtkcolorchooserprivate.h"
23 24
#include "gtkdnd.h"
#include "gtkicontheme.h"
25 26 27 28
#include "gtkmain.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtkmenushell.h"
29 30
#include "gtkprivate.h"
#include "gtkintl.h"
31
#include "gtkrenderprivate.h"
32
#include "gtkwidgetprivate.h"
33
#include "a11y/gtkcolorswatchaccessibleprivate.h"
34 35 36 37 38 39 40 41


struct _GtkColorSwatchPrivate
{
  GdkRGBA color;
  gdouble radius[4];
  gchar *icon;
  guint    has_color        : 1;
Matthias Clasen's avatar
Matthias Clasen committed
42
  guint    use_alpha        : 1;
43
  guint    selectable       : 1;
44 45

  GdkWindow *event_window;
46

47 48
  GtkGesture *long_press_gesture;
  GtkGesture *multipress_gesture;
49 50 51 52 53
};

enum
{
  PROP_ZERO,
54 55
  PROP_RGBA,
  PROP_SELECTABLE
56 57 58 59 60 61 62 63 64 65 66
};

enum
{
  ACTIVATE,
  CUSTOMIZE,
  LAST_SIGNAL
};

static guint signals[LAST_SIGNAL];

67 68 69 70 71 72 73 74 75 76
static void hold_action (GtkGestureLongPress  *gesture,
                         gdouble               x,
                         gdouble               y,
                         GtkColorSwatch       *swatch);
static void tap_action  (GtkGestureMultiPress *gesture,
                         gint                  n_press,
                         gdouble               x,
                         gdouble               y,
                         GtkColorSwatch       *swatch);

77
G_DEFINE_TYPE_WITH_PRIVATE (GtkColorSwatch, gtk_color_swatch, GTK_TYPE_WIDGET)
78 79 80 81

static void
gtk_color_swatch_init (GtkColorSwatch *swatch)
{
82 83 84
  swatch->priv = gtk_color_swatch_get_instance_private (swatch);
  swatch->priv->use_alpha = TRUE;
  swatch->priv->selectable = TRUE;
85 86

  gtk_widget_set_can_focus (GTK_WIDGET (swatch), TRUE);
87
  gtk_widget_set_has_window (GTK_WIDGET (swatch), FALSE);
88 89

  swatch->priv->long_press_gesture = gtk_gesture_long_press_new (GTK_WIDGET (swatch));
90 91
  gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (swatch->priv->long_press_gesture),
                                     TRUE);
92 93 94 95
  g_signal_connect (swatch->priv->long_press_gesture, "pressed",
                    G_CALLBACK (hold_action), swatch);

  swatch->priv->multipress_gesture = gtk_gesture_multi_press_new (GTK_WIDGET (swatch));
96
  gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (swatch->priv->multipress_gesture), 0);
97 98
  g_signal_connect (swatch->priv->multipress_gesture, "pressed",
                    G_CALLBACK (tap_action), swatch);
99 100 101
}

#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
102
#define PIXBUF_SIZE 16
103 104 105 106 107 108 109 110 111

static gboolean
swatch_draw (GtkWidget *widget,
             cairo_t   *cr)
{
  GtkColorSwatch *swatch = (GtkColorSwatch*)widget;
  gdouble width, height;
  GtkStyleContext *context;
  GtkStateFlags state;
112
  GtkIconTheme *theme;
113 114
  GtkBorder border, padding;
  GdkRectangle rect;
115
  GtkIconInfo *icon_info = NULL;
116

117
  theme = gtk_icon_theme_get_default ();
118
  context = gtk_widget_get_style_context (widget);
119
  state = gtk_style_context_get_state (context);
120 121 122
  width = gtk_widget_get_allocated_width (widget);
  height = gtk_widget_get_allocated_height (widget);

123
  gtk_render_background (context, cr, 0, 0, width, height);
Matthias Clasen's avatar
Matthias Clasen committed
124

125 126
  if (swatch->priv->has_color)
    {
127 128 129
      cairo_pattern_t *pattern;
      cairo_matrix_t matrix;

130 131
      gtk_render_content_path (context, cr, 0, 0, width, height);

Matthias Clasen's avatar
Matthias Clasen committed
132
      if (swatch->priv->use_alpha)
Matthias Clasen's avatar
Matthias Clasen committed
133
        {
134 135 136 137
          cairo_save (cr);

          cairo_clip_preserve (cr);

Matthias Clasen's avatar
Matthias Clasen committed
138 139
          cairo_set_source_rgb (cr, 0.33, 0.33, 0.33);
          cairo_fill_preserve (cr);
140

141
          pattern = _gtk_color_chooser_get_checkered_pattern ();
Matthias Clasen's avatar
Matthias Clasen committed
142 143
          cairo_matrix_init_scale (&matrix, 0.125, 0.125);
          cairo_pattern_set_matrix (pattern, &matrix);
144 145

          cairo_set_source_rgb (cr, 0.66, 0.66, 0.66);
Matthias Clasen's avatar
Matthias Clasen committed
146 147
          cairo_mask (cr, pattern);
          cairo_pattern_destroy (pattern);
148

149 150
          cairo_restore (cr);

151
          gdk_cairo_set_source_rgba (cr, &swatch->priv->color);
Matthias Clasen's avatar
Matthias Clasen committed
152 153 154
        }
      else
        {
155 156 157 158
          cairo_set_source_rgb (cr,
                                swatch->priv->color.red,
                                swatch->priv->color.green,
                                swatch->priv->color.blue);
Matthias Clasen's avatar
Matthias Clasen committed
159
        }
160

161
      cairo_fill (cr);
162 163
    }

164
  gtk_render_frame (context, cr, 0, 0, width, height);
165 166 167

  if (swatch->priv->icon)
    {
168
      icon_info = gtk_icon_theme_lookup_icon (theme, swatch->priv->icon, PIXBUF_SIZE,
169 170
                                              GTK_ICON_LOOKUP_GENERIC_FALLBACK
                                              | GTK_ICON_LOOKUP_USE_BUILTIN);
171
    }
172
  else if ((state & GTK_STATE_FLAG_SELECTED) != 0)
173
    {
174 175
      GIcon *gicon;

176 177 178
      gicon = g_themed_icon_new ("object-select-symbolic");
      /* fallback for themes that don't have object-select-symbolic */
      g_themed_icon_append_name (G_THEMED_ICON (gicon), "gtk-apply");
179

180 181 182 183 184
      icon_info = gtk_icon_theme_lookup_by_gicon (theme, gicon, PIXBUF_SIZE,
                                                  GTK_ICON_LOOKUP_GENERIC_FALLBACK
                                                  | GTK_ICON_LOOKUP_USE_BUILTIN);
      g_object_unref (gicon);
    }
185

186 187 188
  /* now draw the overlay image */
  gtk_style_context_get_border (context, state, &border);
  gtk_style_context_get_padding (context, state, &padding);
189 190 191 192
  rect.width = width - (border.left + border.right + padding.left + padding.right);
  rect.height = height - (border.top + border.bottom + padding.top + padding.bottom);
  rect.x = border.left + padding.left;
  rect.y = border.top + padding.top;
193

194
  gtk_style_context_save (context);
195
  gtk_style_context_add_class (context, "overlay");
196
  
197 198
  gtk_render_background (context, cr, rect.x, rect.y, rect.width, rect.height);
  gtk_render_frame (context, cr, rect.x, rect.y, rect.width, rect.height);
199 200 201 202 203 204 205 206 207 208 209

  if (icon_info != NULL)
    {
      GdkPixbuf *pixbuf;

      pixbuf = gtk_icon_info_load_symbolic_for_context (icon_info, context,
                                                        NULL, NULL);

      if (pixbuf != NULL)
        {
          gtk_render_icon (context, cr, pixbuf,
210 211
                           rect.x + (rect.width - gdk_pixbuf_get_width (pixbuf)) / 2,
                           rect.y + (rect.height - gdk_pixbuf_get_height (pixbuf)) / 2);
212 213 214
          g_object_unref (pixbuf);
        }

215
      g_object_unref (icon_info);
216 217
    }

218 219 220 221 222
  if (gtk_widget_has_visible_focus (widget))
    {
      gtk_render_focus (context, cr, 0, 0, width, height);
    }

223 224
  gtk_style_context_restore (context);

225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
  return FALSE;
}

static void
drag_set_color_icon (GdkDragContext *context,
                     const GdkRGBA  *color)
{
  cairo_surface_t *surface;
  cairo_t *cr;

  surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 48, 32);
  cr = cairo_create (surface);
  gdk_cairo_set_source_rgba (cr, color);
  cairo_paint (cr);

Matthias Clasen's avatar
Matthias Clasen committed
240
  cairo_surface_set_device_offset (surface, -4, -4);
241 242 243 244 245 246 247 248 249 250 251 252 253
  gtk_drag_set_icon_surface (context, surface);

  cairo_destroy (cr);
  cairo_surface_destroy (surface);
}

static void
swatch_drag_begin (GtkWidget      *widget,
                   GdkDragContext *context)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
  GdkRGBA color;

Matthias Clasen's avatar
Matthias Clasen committed
254
  gtk_color_swatch_get_rgba (swatch, &color);
255 256 257 258 259 260 261 262 263 264 265 266 267 268
  drag_set_color_icon (context, &color);
}

static void
swatch_drag_data_get (GtkWidget        *widget,
                      GdkDragContext   *context,
                      GtkSelectionData *selection_data,
                      guint             info,
                      guint             time)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
  guint16 vals[4];
  GdkRGBA color;

Matthias Clasen's avatar
Matthias Clasen committed
269
  gtk_color_swatch_get_rgba (swatch, &color);
270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314

  vals[0] = color.red * 0xffff;
  vals[1] = color.green * 0xffff;
  vals[2] = color.blue * 0xffff;
  vals[3] = color.alpha * 0xffff;

  gtk_selection_data_set (selection_data,
                          gdk_atom_intern_static_string ("application/x-color"),
                          16, (guchar *)vals, 8);
}

static void
swatch_drag_data_received (GtkWidget        *widget,
                           GdkDragContext   *context,
                           gint              x,
                           gint              y,
                           GtkSelectionData *selection_data,
                           guint             info,
                           guint             time)
{
  gint length;
  guint16 *vals;
  GdkRGBA color;

  length = gtk_selection_data_get_length (selection_data);

  if (length < 0)
    return;

  /* We accept drops with the wrong format, since the KDE color
   * chooser incorrectly drops application/x-color with format 8.
   */
  if (length != 8)
    {
      g_warning ("Received invalid color data\n");
      return;
    }

  vals = (guint16 *) gtk_selection_data_get_data (selection_data);

  color.red   = (gdouble)vals[0] / 0xffff;
  color.green = (gdouble)vals[1] / 0xffff;
  color.blue  = (gdouble)vals[2] / 0xffff;
  color.alpha = (gdouble)vals[3] / 0xffff;

Matthias Clasen's avatar
Matthias Clasen committed
315
  gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (widget), &color);
316 317 318 319 320 321 322
}

static void
swatch_get_preferred_width (GtkWidget *widget,
                            gint      *min,
                            gint      *nat)
{
323 324 325 326 327 328 329 330
  gint w, h;

  gtk_widget_get_size_request (widget, &w, &h);

  if (w < 0)
    w = 48;

  *min = *nat = w;
331 332 333 334 335 336 337
}

static void
swatch_get_preferred_height (GtkWidget *widget,
                             gint      *min,
                             gint      *nat)
{
338 339 340 341 342 343 344 345
  gint w, h;

  gtk_widget_get_size_request (widget, &w, &h);

  if (h < 0)
    h = 32;

  *min = *nat = h;
346 347 348 349 350 351 352 353 354 355 356 357 358 359
}

static gboolean
swatch_key_press (GtkWidget   *widget,
                  GdkEventKey *event)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);

  if (event->keyval == GDK_KEY_space ||
      event->keyval == GDK_KEY_Return ||
      event->keyval == GDK_KEY_ISO_Enter||
      event->keyval == GDK_KEY_KP_Enter ||
      event->keyval == GDK_KEY_KP_Space)
    {
360 361 362
      if (swatch->priv->has_color && 
          swatch->priv->selectable &&
          (gtk_widget_get_state_flags (widget) & GTK_STATE_FLAG_SELECTED) == 0)
363
        gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_SELECTED, FALSE);
364 365 366 367 368
      else
        g_signal_emit (swatch, signals[ACTIVATE], 0);
      return TRUE;
    }

369 370 371
  if (GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->key_press_event (widget, event))
    return TRUE;

372 373 374 375
  return FALSE;
}

static gboolean
Matthias Clasen's avatar
Matthias Clasen committed
376 377
swatch_enter_notify (GtkWidget        *widget,
                     GdkEventCrossing *event)
378
{
379 380
  gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_PRELIGHT, FALSE);

381 382 383 384
  return FALSE;
}

static gboolean
Matthias Clasen's avatar
Matthias Clasen committed
385 386
swatch_leave_notify (GtkWidget        *widget,
                     GdkEventCrossing *event)
387
{
388 389
  gtk_widget_unset_state_flags (widget, GTK_STATE_FLAG_PRELIGHT);

390 391 392
  return FALSE;
}

393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438
static void
emit_customize (GtkColorSwatch *swatch)
{
  g_signal_emit (swatch, signals[CUSTOMIZE], 0);
}

static void
popup_position_func (GtkMenu   *menu,
                     gint      *x,
                     gint      *y,
                     gboolean  *push_in,
                     gpointer   user_data)
{
  GtkWidget *widget;
  GtkRequisition req;
  gint root_x, root_y;
  GdkScreen *screen;
  GdkWindow *window;
  GdkRectangle monitor;
  gint monitor_num;

  widget = GTK_WIDGET (user_data);
  g_return_if_fail (gtk_widget_get_realized (widget));
  window = gtk_widget_get_window (widget);

  screen = gtk_widget_get_screen (widget);
  monitor_num = gdk_screen_get_monitor_at_window (screen, window);
  if (monitor_num < 0)
    monitor_num = 0;
  gtk_menu_set_monitor (menu, monitor_num);

  gdk_window_get_origin (window, &root_x, &root_y);
  gtk_widget_get_preferred_size (GTK_WIDGET (menu), &req, NULL);

  /* Put corner of menu centered on swatch */
  *x = root_x + gtk_widget_get_allocated_width (widget) / 2;
  *y = root_y + gtk_widget_get_allocated_height (widget) / 2;

  /* Ensure sanity */
  gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
  *x = CLAMP (*x, monitor.x, MAX (monitor.x, monitor.width - req.width));
  *y = CLAMP (*y, monitor.y, MAX (monitor.y, monitor.height - req.height));
}

static void
do_popup (GtkWidget      *swatch,
439 440
          gint            button,
          gint            time)
441 442 443 444 445
{
  GtkWidget *menu;
  GtkWidget *item;

  menu = gtk_menu_new ();
446 447 448
  gtk_style_context_add_class (gtk_widget_get_style_context (menu),
                               GTK_STYLE_CLASS_CONTEXT_MENU);

449 450 451 452 453 454 455 456 457 458
  item = gtk_menu_item_new_with_mnemonic (_("_Customize"));
  gtk_menu_attach_to_widget (GTK_MENU (menu), swatch, NULL);

  g_signal_connect_swapped (item, "activate",
                            G_CALLBACK (emit_customize), swatch);

  gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);

  gtk_widget_show_all (item);

459
  if (button != 0)
460
    gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
461
                    NULL, NULL, button, time);
462 463 464
  else
    gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
                    popup_position_func, swatch,
465
                    button, time);
466 467
}

468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490
static gboolean
swatch_primary_action (GtkColorSwatch *swatch)
{
  GtkWidget *widget = (GtkWidget *)swatch;
  GtkStateFlags flags;

  flags = gtk_widget_get_state_flags (widget);
  if (!swatch->priv->has_color)
    {
      g_signal_emit (swatch, signals[ACTIVATE], 0);
      return TRUE;
    }
  else if (swatch->priv->selectable &&
           (flags & GTK_STATE_FLAG_SELECTED) == 0)
    {
      gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_SELECTED, FALSE);
      return TRUE;
    }

  return FALSE;
}

static void
491 492 493 494
hold_action (GtkGestureLongPress *gesture,
             gdouble              x,
             gdouble              y,
             GtkColorSwatch      *swatch)
495
{
496
  emit_customize (swatch);
497
  gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
498 499 500
}

static void
501 502 503 504 505 506
tap_action (GtkGestureMultiPress *gesture,
            gint                  n_press,
            gdouble               x,
            gdouble               y,
            GtkColorSwatch       *swatch)
{
507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522
  guint button;

  button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));

  if (button == GDK_BUTTON_PRIMARY)
    {
      if (n_press == 1)
        swatch_primary_action (swatch);
      else if (n_press > 1)
        g_signal_emit (swatch, signals[ACTIVATE], 0);
    }
  else if (button == GDK_BUTTON_SECONDARY)
    {
      if (swatch->priv->has_color)
        do_popup (GTK_WIDGET (swatch), button, gtk_get_current_event_time ());
    }
523 524
}

525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546
static void
swatch_map (GtkWidget *widget)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);

  GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->map (widget);

  if (swatch->priv->event_window)
    gdk_window_show (swatch->priv->event_window);
}

static void
swatch_unmap (GtkWidget *widget)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);

  if (swatch->priv->event_window)
    gdk_window_hide (swatch->priv->event_window);

  GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->unmap (widget);
}

547 548 549
static void
swatch_realize (GtkWidget *widget)
{
550
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
551 552 553 554 555 556
  GtkAllocation allocation;
  GdkWindow *window;
  GdkWindowAttr attributes;
  gint attributes_mask;

  gtk_widget_get_allocation (widget, &allocation);
557
  gtk_widget_set_realized (widget, TRUE);
558 559 560 561 562 563

  attributes.window_type = GDK_WINDOW_CHILD;
  attributes.x = allocation.x;
  attributes.y = allocation.y;
  attributes.width = allocation.width;
  attributes.height = allocation.height;
564 565
  attributes.wclass = GDK_INPUT_ONLY;
  attributes.event_mask = gtk_widget_get_events (widget);
566 567 568 569 570
  attributes.event_mask |= GDK_BUTTON_PRESS_MASK
                           | GDK_BUTTON_RELEASE_MASK
                           | GDK_ENTER_NOTIFY_MASK
                           | GDK_LEAVE_NOTIFY_MASK
                           | GDK_TOUCH_MASK;
571

572
  attributes_mask = GDK_WA_X | GDK_WA_Y;
573

574
  window = gtk_widget_get_parent_window (widget);
575
  gtk_widget_set_window (widget, window);
576 577 578 579 580
  g_object_ref (window);

  swatch->priv->event_window = 
    gdk_window_new (window,
                    &attributes, attributes_mask);
581
  gtk_widget_register_window (widget, swatch->priv->event_window);
582 583 584 585 586 587 588 589 590
}

static void
swatch_unrealize (GtkWidget *widget)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);

  if (swatch->priv->event_window)
    {
591
      gtk_widget_unregister_window (widget, swatch->priv->event_window);
592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612
      gdk_window_destroy (swatch->priv->event_window);
      swatch->priv->event_window = NULL;
    }

  GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->unrealize (widget);
}

static void
swatch_size_allocate (GtkWidget *widget,
                      GtkAllocation *allocation)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);

  gtk_widget_set_allocation (widget, allocation);

  if (gtk_widget_get_realized (widget))
    gdk_window_move_resize (swatch->priv->event_window,
                            allocation->x,
                            allocation->y,
                            allocation->width,
                            allocation->height);
613

614
  _gtk_widget_set_simple_clip (widget, NULL);
615 616
}

617
static gboolean
Matthias Clasen's avatar
Matthias Clasen committed
618
swatch_popup_menu (GtkWidget *swatch)
619
{
620
  do_popup (swatch, 0, gtk_get_current_event_time ());
621 622 623
  return TRUE;
}

Matthias Clasen's avatar
Matthias Clasen committed
624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640
/* GObject implementation {{{1 */

static void
swatch_get_property (GObject    *object,
                     guint       prop_id,
                     GValue     *value,
                     GParamSpec *pspec)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
  GdkRGBA color;

  switch (prop_id)
    {
    case PROP_RGBA:
      gtk_color_swatch_get_rgba (swatch, &color);
      g_value_set_boxed (value, &color);
      break;
641 642 643
    case PROP_SELECTABLE:
      g_value_set_boolean (value, gtk_color_swatch_get_selectable (swatch));
      break;
Matthias Clasen's avatar
Matthias Clasen committed
644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}

static void
swatch_set_property (GObject      *object,
                     guint         prop_id,
                     const GValue *value,
                     GParamSpec   *pspec)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);

  switch (prop_id)
    {
    case PROP_RGBA:
      gtk_color_swatch_set_rgba (swatch, g_value_get_boxed (value));
      break;
663 664 665
    case PROP_SELECTABLE:
      gtk_color_swatch_set_selectable (swatch, g_value_get_boolean (value));
      break;
Matthias Clasen's avatar
Matthias Clasen committed
666 667 668 669 670 671 672 673 674 675 676 677
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}

static void
swatch_finalize (GObject *object)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);

  g_free (swatch->priv->icon);
678 679 680

  g_object_unref (swatch->priv->long_press_gesture);
  g_object_unref (swatch->priv->multipress_gesture);
Matthias Clasen's avatar
Matthias Clasen committed
681 682 683 684

  G_OBJECT_CLASS (gtk_color_swatch_parent_class)->finalize (object);
}

685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701
static void
gtk_color_swatch_class_init (GtkColorSwatchClass *class)
{
  GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
  GObjectClass *object_class = (GObjectClass *)class;

  object_class->get_property = swatch_get_property;
  object_class->set_property = swatch_set_property;
  object_class->finalize = swatch_finalize;

  widget_class->get_preferred_width = swatch_get_preferred_width;
  widget_class->get_preferred_height = swatch_get_preferred_height;
  widget_class->draw = swatch_draw;
  widget_class->drag_begin = swatch_drag_begin;
  widget_class->drag_data_get = swatch_drag_data_get;
  widget_class->drag_data_received = swatch_drag_data_received;
  widget_class->key_press_event = swatch_key_press;
Matthias Clasen's avatar
Matthias Clasen committed
702 703 704
  widget_class->popup_menu = swatch_popup_menu;
  widget_class->enter_notify_event = swatch_enter_notify;
  widget_class->leave_notify_event = swatch_leave_notify;
705
  widget_class->realize = swatch_realize;
706 707 708 709
  widget_class->unrealize = swatch_unrealize;
  widget_class->map = swatch_map;
  widget_class->unmap = swatch_unmap;
  widget_class->size_allocate = swatch_size_allocate;
710 711 712 713 714 715 716 717 718 719 720 721 722 723 724

  signals[ACTIVATE] =
    g_signal_new ("activate",
                  GTK_TYPE_COLOR_SWATCH,
                  G_SIGNAL_RUN_FIRST,
                  G_STRUCT_OFFSET (GtkColorSwatchClass, activate),
                  NULL, NULL, NULL, G_TYPE_NONE, 0);

  signals[CUSTOMIZE] =
    g_signal_new ("customize",
                  GTK_TYPE_COLOR_SWATCH,
                  G_SIGNAL_RUN_FIRST,
                  G_STRUCT_OFFSET (GtkColorSwatchClass, customize),
                  NULL, NULL, NULL, G_TYPE_NONE, 0);

Matthias Clasen's avatar
Matthias Clasen committed
725 726
  g_object_class_install_property (object_class, PROP_RGBA,
      g_param_spec_boxed ("rgba", P_("RGBA Color"), P_("Color as RGBA"),
727
                          GDK_TYPE_RGBA, GTK_PARAM_READWRITE));
728 729 730
  g_object_class_install_property (object_class, PROP_SELECTABLE,
      g_param_spec_boolean ("selectable", P_("Selectable"), P_("Whether the swatch is selectable"),
                            TRUE, GTK_PARAM_READWRITE));
731

732
  gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_COLOR_SWATCH_ACCESSIBLE);
733 734 735 736 737 738 739 740 741 742
}

/* Public API {{{1 */

GtkWidget *
gtk_color_swatch_new (void)
{
  return (GtkWidget *) g_object_new (GTK_TYPE_COLOR_SWATCH, NULL);
}

Matthias Clasen's avatar
Matthias Clasen committed
743 744 745 746
static const GtkTargetEntry dnd_targets[] = {
  { "application/x-color", 0 }
};

747
void
Matthias Clasen's avatar
Matthias Clasen committed
748 749
gtk_color_swatch_set_rgba (GtkColorSwatch *swatch,
                           const GdkRGBA  *color)
750
{
751 752 753 754
  GtkStyleContext *context;

  context = gtk_widget_get_style_context (GTK_WIDGET (swatch));

755
  if (!swatch->priv->has_color)
756 757 758 759 760 761 762 763 764 765 766
    {
      gtk_drag_source_set (GTK_WIDGET (swatch),
                           GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
                           dnd_targets, G_N_ELEMENTS (dnd_targets),
                           GDK_ACTION_COPY | GDK_ACTION_MOVE);
    }
  else
    {
      gtk_style_context_remove_class (context, "color-light");
      gtk_style_context_remove_class (context, "color-dark");
    }
767 768

  swatch->priv->has_color = TRUE;
Matthias Clasen's avatar
Matthias Clasen committed
769
  swatch->priv->color = *color;
770

771 772 773 774 775
  if (INTENSITY (swatch->priv->color.red, swatch->priv->color.green, swatch->priv->color.blue) > 0.5)
    gtk_style_context_add_class (context, "color-light");
  else
    gtk_style_context_add_class (context, "color-dark");

776
  gtk_widget_queue_draw (GTK_WIDGET (swatch));
Matthias Clasen's avatar
Matthias Clasen committed
777
  g_object_notify (G_OBJECT (swatch), "rgba");
778 779 780
}

gboolean
Matthias Clasen's avatar
Matthias Clasen committed
781 782
gtk_color_swatch_get_rgba (GtkColorSwatch *swatch,
                           GdkRGBA        *color)
783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813
{
  if (swatch->priv->has_color)
    {
      color->red = swatch->priv->color.red;
      color->green = swatch->priv->color.green;
      color->blue = swatch->priv->color.blue;
      color->alpha = swatch->priv->color.alpha;
      return TRUE;
    }
  else
    {
      color->red = 1.0;
      color->green = 1.0;
      color->blue = 1.0;
      color->alpha = 1.0;
      return FALSE;
    }
}

void
gtk_color_swatch_set_icon (GtkColorSwatch *swatch,
                           const gchar    *icon)
{
  swatch->priv->icon = g_strdup (icon);
  gtk_widget_queue_draw (GTK_WIDGET (swatch));
}

void
gtk_color_swatch_set_can_drop (GtkColorSwatch *swatch,
                               gboolean        can_drop)
{
814 815 816 817 818 819 820 821 822 823 824 825 826
  if (can_drop)
    {
      gtk_drag_dest_set (GTK_WIDGET (swatch),
                         GTK_DEST_DEFAULT_HIGHLIGHT |
                         GTK_DEST_DEFAULT_MOTION |
                         GTK_DEST_DEFAULT_DROP,
                         dnd_targets, G_N_ELEMENTS (dnd_targets),
                         GDK_ACTION_COPY);
    }
  else
    {
      gtk_drag_dest_unset (GTK_WIDGET (swatch));
    }
827 828
}

Matthias Clasen's avatar
Matthias Clasen committed
829
void
Matthias Clasen's avatar
Matthias Clasen committed
830
gtk_color_swatch_set_use_alpha (GtkColorSwatch *swatch,
Matthias Clasen's avatar
Matthias Clasen committed
831
                                gboolean        use_alpha)
Matthias Clasen's avatar
Matthias Clasen committed
832
{
Matthias Clasen's avatar
Matthias Clasen committed
833
  swatch->priv->use_alpha = use_alpha;
Matthias Clasen's avatar
Matthias Clasen committed
834 835 836
  gtk_widget_queue_draw (GTK_WIDGET (swatch));
}

837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853
void
gtk_color_swatch_set_selectable (GtkColorSwatch *swatch,
                                 gboolean selectable)
{
  if (selectable == swatch->priv->selectable)
    return;

  swatch->priv->selectable = selectable;
  g_object_notify (G_OBJECT (swatch), "selectable");
}

gboolean
gtk_color_swatch_get_selectable (GtkColorSwatch *swatch)
{
  return swatch->priv->selectable;
}

854
/* vim:set foldmethod=marker: */