gtkcolorswatch.c 26.2 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 Jardón's avatar
Javier Jardón 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 "gtkiconhelperprivate.h"
33
#include "gtkcssnodeprivate.h"
34
#include "gtkcsscustomgadgetprivate.h"
35
#include "gtkwidgetprivate.h"
36
#include "gtkstylecontextprivate.h"
37
#include "a11y/gtkcolorswatchaccessibleprivate.h"
38 39


40 41
/*
 * GtkColorSwatch has two CSS nodes, the main one named colorswatch
Matthias Clasen's avatar
Matthias Clasen committed
42
 * and a subnode named overlay. The main node gets the .light or .dark
43 44
 * style classes added depending on the brightness of the color that
 * the swatch is showing.
45 46 47
 *
 * The color swatch has the .activatable style class by default. It can
 * be removed for non-activatable swatches.
48 49
 */

50 51 52 53 54 55
struct _GtkColorSwatchPrivate
{
  GdkRGBA color;
  gdouble radius[4];
  gchar *icon;
  guint    has_color        : 1;
Matthias Clasen's avatar
Matthias Clasen committed
56
  guint    use_alpha        : 1;
57
  guint    selectable       : 1;
58
  guint    has_menu         : 1;
59 60

  GdkWindow *event_window;
61

62 63
  GtkGesture *long_press_gesture;
  GtkGesture *multipress_gesture;
64 65
  GtkCssGadget *gadget;
  GtkCssGadget *overlay_gadget;
66 67

  GtkWidget *popover;
68 69 70 71 72
};

enum
{
  PROP_ZERO,
73
  PROP_RGBA,
74 75
  PROP_SELECTABLE,
  PROP_HAS_MENU
76 77 78 79 80 81 82 83 84 85 86
};

enum
{
  ACTIVATE,
  CUSTOMIZE,
  LAST_SIGNAL
};

static guint signals[LAST_SIGNAL];

87

88
G_DEFINE_TYPE_WITH_PRIVATE (GtkColorSwatch, gtk_color_swatch, GTK_TYPE_WIDGET)
89

90 91 92
static gboolean
swatch_draw (GtkWidget *widget,
             cairo_t   *cr)
93
{
94
  gtk_css_gadget_draw (GTK_COLOR_SWATCH (widget)->priv->gadget, cr);
95

96
  return FALSE;
97 98 99
}

#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
100
#define PIXBUF_SIZE 16
101 102

static gboolean
103 104 105 106 107 108 109
gtk_color_swatch_render (GtkCssGadget *gadget,
                         cairo_t      *cr,
                         int           x,
                         int           y,
                         int           width,
                         int           height,
                         gpointer      data)
110
{
111 112
  GtkWidget *widget;
  GtkColorSwatch *swatch;
113 114
  GtkStyleContext *context;

115 116
  widget = gtk_css_gadget_get_owner (gadget);
  swatch = GTK_COLOR_SWATCH (widget);
117
  context = gtk_widget_get_style_context (widget);
Matthias Clasen's avatar
Matthias Clasen committed
118

119 120
  if (swatch->priv->has_color)
    {
121 122
      cairo_pattern_t *pattern;
      cairo_matrix_t matrix;
123 124 125 126 127 128 129
      GtkAllocation allocation, border_allocation;

      gtk_widget_get_allocation (widget, &allocation);
      gtk_css_gadget_get_border_allocation (gadget, &border_allocation, NULL);

      border_allocation.x -= allocation.x;
      border_allocation.y -= allocation.y;
130 131

      gtk_render_content_path (context, cr,
132 133 134 135
                               border_allocation.x,
                               border_allocation.y,
                               border_allocation.width,
                               border_allocation.height);
136

Matthias Clasen's avatar
Matthias Clasen committed
137
      if (swatch->priv->use_alpha)
Matthias Clasen's avatar
Matthias Clasen committed
138
        {
139 140 141 142
          cairo_save (cr);

          cairo_clip_preserve (cr);

Matthias Clasen's avatar
Matthias Clasen committed
143 144
          cairo_set_source_rgb (cr, 0.33, 0.33, 0.33);
          cairo_fill_preserve (cr);
145

146
          pattern = _gtk_color_chooser_get_checkered_pattern ();
Matthias Clasen's avatar
Matthias Clasen committed
147 148
          cairo_matrix_init_scale (&matrix, 0.125, 0.125);
          cairo_pattern_set_matrix (pattern, &matrix);
149 150

          cairo_set_source_rgb (cr, 0.66, 0.66, 0.66);
Matthias Clasen's avatar
Matthias Clasen committed
151 152
          cairo_mask (cr, pattern);
          cairo_pattern_destroy (pattern);
153

154 155
          cairo_restore (cr);

156
          gdk_cairo_set_source_rgba (cr, &swatch->priv->color);
Matthias Clasen's avatar
Matthias Clasen committed
157 158 159
        }
      else
        {
160 161 162 163
          cairo_set_source_rgb (cr,
                                swatch->priv->color.red,
                                swatch->priv->color.green,
                                swatch->priv->color.blue);
Matthias Clasen's avatar
Matthias Clasen committed
164
        }
165

166
      cairo_fill (cr);
167 168
    }

169 170 171 172 173
  gtk_css_gadget_draw (swatch->priv->overlay_gadget, cr);

  return gtk_widget_has_visible_focus (widget);
}

174 175 176 177 178 179 180 181 182 183 184 185
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
186
  cairo_surface_set_device_offset (surface, -4, -4);
187 188 189 190 191 192 193 194 195 196 197 198 199
  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
200
  gtk_color_swatch_get_rgba (swatch, &color);
201 202 203 204 205 206 207 208 209 210 211 212 213 214
  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
215
  gtk_color_swatch_get_rgba (swatch, &color);
216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260

  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
261
  gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (widget), &color);
262 263 264
}

static void
265 266 267 268 269 270 271 272
gtk_color_swatch_measure (GtkCssGadget   *gadget,
                          GtkOrientation  orientation,
                          int             for_size,
                          int            *minimum,
                          int            *natural,
                          int            *minimum_baseline,
                          int            *natural_baseline,
                          gpointer        unused)
273
{
274 275 276
  GtkWidget *widget;
  GtkColorSwatch *swatch;
  gint w, h, min;
277

278 279 280 281 282 283 284 285
  widget = gtk_css_gadget_get_owner (gadget);
  swatch = GTK_COLOR_SWATCH (widget);

  gtk_css_gadget_get_preferred_size (swatch->priv->overlay_gadget,
                                     orientation,
                                     -1,
                                     minimum, natural,
                                     NULL, NULL);
286

287 288 289 290 291
  gtk_widget_get_size_request (widget, &w, &h);
  if (orientation == GTK_ORIENTATION_HORIZONTAL)
    min = w < 0 ? 48 : w;
  else
    min = h < 0 ? 32 : h;
292

293 294
  *minimum = MAX (*minimum, min);
  *natural = MAX (*natural, min);
295 296 297 298 299 300 301 302 303 304 305 306 307 308
}

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)
    {
309
      if (swatch->priv->has_color &&
310 311
          swatch->priv->selectable &&
          (gtk_widget_get_state_flags (widget) & GTK_STATE_FLAG_SELECTED) == 0)
312
        gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_SELECTED, FALSE);
313 314 315 316 317
      else
        g_signal_emit (swatch, signals[ACTIVATE], 0);
      return TRUE;
    }

318 319 320
  if (GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->key_press_event (widget, event))
    return TRUE;

321 322 323 324
  return FALSE;
}

static gboolean
Matthias Clasen's avatar
Matthias Clasen committed
325 326
swatch_enter_notify (GtkWidget        *widget,
                     GdkEventCrossing *event)
327
{
328 329
  gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_PRELIGHT, FALSE);

330 331 332 333
  return FALSE;
}

static gboolean
Matthias Clasen's avatar
Matthias Clasen committed
334 335
swatch_leave_notify (GtkWidget        *widget,
                     GdkEventCrossing *event)
336
{
337 338
  gtk_widget_unset_state_flags (widget, GTK_STATE_FLAG_PRELIGHT);

339 340 341
  return FALSE;
}

342 343 344 345 346 347 348
static void
emit_customize (GtkColorSwatch *swatch)
{
  g_signal_emit (swatch, signals[CUSTOMIZE], 0);
}

static void
349
do_popup (GtkColorSwatch *swatch)
350
{
351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367
  if (swatch->priv->popover == NULL)
    {
      GtkWidget *box;
      GtkWidget *item;

      swatch->priv->popover = gtk_popover_new (GTK_WIDGET (swatch));
      box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
      gtk_container_add (GTK_CONTAINER (swatch->priv->popover), box);
      g_object_set (box, "margin", 10, NULL);
      item = g_object_new (GTK_TYPE_MODEL_BUTTON,
                           "text", _("C_ustomize"),
                           NULL);
      g_signal_connect_swapped (item, "clicked",
                                G_CALLBACK (emit_customize), swatch);
      gtk_container_add (GTK_CONTAINER (box), item);
      gtk_widget_show_all (box);
    }
368

369
  gtk_widget_show (swatch->priv->popover);
370 371
}

372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394
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
395 396 397 398
hold_action (GtkGestureLongPress *gesture,
             gdouble              x,
             gdouble              y,
             GtkColorSwatch      *swatch)
399
{
400
  do_popup (swatch);
401
  gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
402 403 404
}

static void
405 406 407 408 409 410
tap_action (GtkGestureMultiPress *gesture,
            gint                  n_press,
            gdouble               x,
            gdouble               y,
            GtkColorSwatch       *swatch)
{
411 412 413 414 415 416 417 418 419 420 421 422 423
  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)
    {
424
      if (swatch->priv->has_color && swatch->priv->has_menu)
425
        do_popup (swatch);
426
    }
427 428
}

429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450
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);
}

451 452 453
static void
swatch_realize (GtkWidget *widget)
{
454
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
455 456 457 458 459 460
  GtkAllocation allocation;
  GdkWindow *window;
  GdkWindowAttr attributes;
  gint attributes_mask;

  gtk_widget_get_allocation (widget, &allocation);
461
  gtk_widget_set_realized (widget, TRUE);
462 463 464 465 466 467

  attributes.window_type = GDK_WINDOW_CHILD;
  attributes.x = allocation.x;
  attributes.y = allocation.y;
  attributes.width = allocation.width;
  attributes.height = allocation.height;
468 469
  attributes.wclass = GDK_INPUT_ONLY;
  attributes.event_mask = gtk_widget_get_events (widget);
470 471 472 473 474
  attributes.event_mask |= GDK_BUTTON_PRESS_MASK
                           | GDK_BUTTON_RELEASE_MASK
                           | GDK_ENTER_NOTIFY_MASK
                           | GDK_LEAVE_NOTIFY_MASK
                           | GDK_TOUCH_MASK;
475

476
  attributes_mask = GDK_WA_X | GDK_WA_Y;
477

478
  window = gtk_widget_get_parent_window (widget);
479
  gtk_widget_set_window (widget, window);
480 481
  g_object_ref (window);

482
  swatch->priv->event_window = gdk_window_new (window, &attributes, attributes_mask);
483
  gtk_widget_register_window (widget, swatch->priv->event_window);
484 485 486 487 488 489 490 491 492
}

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

  if (swatch->priv->event_window)
    {
493
      gtk_widget_unregister_window (widget, swatch->priv->event_window);
494 495 496 497 498 499 500 501
      gdk_window_destroy (swatch->priv->event_window);
      swatch->priv->event_window = NULL;
    }

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

static void
502
swatch_size_allocate (GtkWidget     *widget,
503 504 505
                      GtkAllocation *allocation)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
506
  GtkAllocation clip, clip2;
507 508 509

  gtk_widget_set_allocation (widget, allocation);

510 511 512 513
  gtk_css_gadget_allocate (swatch->priv->gadget,
                           allocation,
                           gtk_widget_get_allocated_baseline (widget),
                           &clip);
514 515 516 517
  gtk_css_gadget_allocate (swatch->priv->overlay_gadget,
                           allocation,
                           gtk_widget_get_allocated_baseline (widget),
                           &clip2);
518

519
  gdk_rectangle_union (&clip, &clip2, &clip);
520

521
  gtk_widget_set_clip (widget, &clip);
522 523 524 525 526 527 528 529 530 531 532 533

  if (gtk_widget_get_realized (widget))
    {
      GtkAllocation border_allocation;
      gtk_css_gadget_get_border_allocation(swatch->priv->gadget, &border_allocation, NULL);
      gdk_window_move_resize (swatch->priv->event_window,
                              border_allocation.x,
                              border_allocation.y,
                              border_allocation.width,
                              border_allocation.height);
    }

534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557
}

static void
swatch_get_preferred_width (GtkWidget *widget,
                            gint      *minimum,
                            gint      *natural)
{
  gtk_css_gadget_get_preferred_size (GTK_COLOR_SWATCH (widget)->priv->gadget,
                                     GTK_ORIENTATION_HORIZONTAL,
                                     -1,
                                     minimum, natural,
                                     NULL, NULL);
}

static void
swatch_get_preferred_height (GtkWidget *widget,
                             gint      *minimum,
                             gint      *natural)
{
  gtk_css_gadget_get_preferred_size (GTK_COLOR_SWATCH (widget)->priv->gadget,
                                     GTK_ORIENTATION_VERTICAL,
                                     -1,
                                     minimum, natural,
                                     NULL, NULL);
558 559
}

560
static gboolean
561
swatch_popup_menu (GtkWidget *widget)
562
{
563
  do_popup (GTK_COLOR_SWATCH (widget));
564 565 566
  return TRUE;
}

567 568 569 570 571 572 573 574 575 576 577 578 579
static void
update_icon (GtkColorSwatch *swatch)
{
  GtkIconHelper *icon_helper = GTK_ICON_HELPER (swatch->priv->overlay_gadget);

  if (swatch->priv->icon)
    _gtk_icon_helper_set_icon_name (icon_helper, swatch->priv->icon, GTK_ICON_SIZE_BUTTON);
  else if (gtk_widget_get_state_flags (GTK_WIDGET (swatch)) & GTK_STATE_FLAG_SELECTED)
    _gtk_icon_helper_set_icon_name (icon_helper, "object-select-symbolic", GTK_ICON_SIZE_BUTTON);
  else
    _gtk_icon_helper_clear (icon_helper);
}

580 581 582 583 584 585
static void
swatch_state_flags_changed (GtkWidget     *widget,
                            GtkStateFlags  previous_state)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);

586 587
  gtk_css_gadget_set_state (swatch->priv->gadget, gtk_widget_get_state_flags (widget));
  gtk_css_gadget_set_state (swatch->priv->overlay_gadget, gtk_widget_get_state_flags (widget));
588

589 590
  update_icon (swatch);

591
  GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->state_flags_changed (widget, previous_state);
592 593
}

Matthias Clasen's avatar
Matthias Clasen committed
594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610
/* 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;
611 612 613
    case PROP_SELECTABLE:
      g_value_set_boolean (value, gtk_color_swatch_get_selectable (swatch));
      break;
614 615 616
    case PROP_HAS_MENU:
      g_value_set_boolean (value, swatch->priv->has_menu);
      break;
Matthias Clasen's avatar
Matthias Clasen committed
617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635
    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;
636 637 638
    case PROP_SELECTABLE:
      gtk_color_swatch_set_selectable (swatch, g_value_get_boolean (value));
      break;
639 640 641
    case PROP_HAS_MENU:
      swatch->priv->has_menu = g_value_get_boolean (value);
      break;
Matthias Clasen's avatar
Matthias Clasen committed
642 643 644 645 646 647 648 649 650 651 652 653
    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);
654 655
  g_clear_object (&swatch->priv->gadget);
  g_clear_object (&swatch->priv->overlay_gadget);
656

Matthias Clasen's avatar
Matthias Clasen committed
657 658 659
  G_OBJECT_CLASS (gtk_color_swatch_parent_class)->finalize (object);
}

660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676
static void
swatch_dispose (GObject *object)
{
  GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);

  if (swatch->priv->popover)
    {
      gtk_widget_destroy (swatch->priv->popover);
      swatch->priv->popover = NULL;
    }

  g_clear_object (&swatch->priv->long_press_gesture);
  g_clear_object (&swatch->priv->multipress_gesture);

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

677 678 679 680 681 682 683 684 685
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;
686
  object_class->dispose = swatch_dispose;
687 688 689 690 691 692 693 694

  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
695 696 697
  widget_class->popup_menu = swatch_popup_menu;
  widget_class->enter_notify_event = swatch_enter_notify;
  widget_class->leave_notify_event = swatch_leave_notify;
698
  widget_class->realize = swatch_realize;
699 700 701 702
  widget_class->unrealize = swatch_unrealize;
  widget_class->map = swatch_map;
  widget_class->unmap = swatch_unmap;
  widget_class->size_allocate = swatch_size_allocate;
703
  widget_class->state_flags_changed = swatch_state_flags_changed;
704 705

  signals[ACTIVATE] =
706
    g_signal_new (I_("activate"),
707 708 709 710 711 712
                  GTK_TYPE_COLOR_SWATCH,
                  G_SIGNAL_RUN_FIRST,
                  G_STRUCT_OFFSET (GtkColorSwatchClass, activate),
                  NULL, NULL, NULL, G_TYPE_NONE, 0);

  signals[CUSTOMIZE] =
713
    g_signal_new (I_("customize"),
714 715 716 717 718
                  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
719 720
  g_object_class_install_property (object_class, PROP_RGBA,
      g_param_spec_boxed ("rgba", P_("RGBA Color"), P_("Color as RGBA"),
721
                          GDK_TYPE_RGBA, GTK_PARAM_READWRITE));
722 723 724
  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));
725 726 727
  g_object_class_install_property (object_class, PROP_HAS_MENU,
      g_param_spec_boolean ("has-menu", P_("Has Menu"), P_("Whether the swatch should offer customization"),
                            TRUE, GTK_PARAM_READWRITE));
728

729
  gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_COLOR_SWATCH_ACCESSIBLE);
730
  gtk_widget_class_set_css_name (widget_class, "colorswatch");
731 732
}

733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760
static void
gtk_color_swatch_init (GtkColorSwatch *swatch)
{
  GtkCssNode *widget_node;

  swatch->priv = gtk_color_swatch_get_instance_private (swatch);
  swatch->priv->use_alpha = TRUE;
  swatch->priv->selectable = TRUE;
  swatch->priv->has_menu = TRUE;

  gtk_widget_set_can_focus (GTK_WIDGET (swatch), TRUE);
  gtk_widget_set_has_window (GTK_WIDGET (swatch), FALSE);

  swatch->priv->long_press_gesture = gtk_gesture_long_press_new (GTK_WIDGET (swatch));
  gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (swatch->priv->long_press_gesture),
                                     TRUE);
  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));
  gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (swatch->priv->multipress_gesture), 0);
  g_signal_connect (swatch->priv->multipress_gesture, "pressed",
                    G_CALLBACK (tap_action), swatch);

  widget_node = gtk_widget_get_css_node (GTK_WIDGET (swatch));
  swatch->priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
                                                             GTK_WIDGET (swatch),
                                                             gtk_color_swatch_measure,
761
                                                             NULL,
762 763 764 765
                                                             gtk_color_swatch_render,
                                                             NULL,
                                                             NULL);
  gtk_css_gadget_add_class (swatch->priv->gadget, "activatable");
766 767 768 769 770

  swatch->priv->overlay_gadget = gtk_icon_helper_new_named ("overlay", GTK_WIDGET (swatch));
  _gtk_icon_helper_set_force_scale_pixbuf (GTK_ICON_HELPER (swatch->priv->overlay_gadget), TRUE);
  gtk_css_node_set_parent (gtk_css_gadget_get_node (swatch->priv->overlay_gadget), widget_node);

771
}
772

773 774 775 776 777 778 779 780
/* 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
781 782 783 784
static const GtkTargetEntry dnd_targets[] = {
  { "application/x-color", 0 }
};

785
void
Matthias Clasen's avatar
Matthias Clasen committed
786 787
gtk_color_swatch_set_rgba (GtkColorSwatch *swatch,
                           const GdkRGBA  *color)
788
{
789 790 791 792
  GtkStyleContext *context;

  context = gtk_widget_get_style_context (GTK_WIDGET (swatch));

793
  if (!swatch->priv->has_color)
794 795 796 797 798 799
    {
      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);
    }
800 801

  swatch->priv->has_color = TRUE;
Matthias Clasen's avatar
Matthias Clasen committed
802
  swatch->priv->color = *color;
803

804
  if (INTENSITY (swatch->priv->color.red, swatch->priv->color.green, swatch->priv->color.blue) > 0.5)
805 806 807 808
    {
      gtk_style_context_add_class (context, "light");
      gtk_style_context_remove_class (context, "dark");
    }
809
  else
810 811 812 813
    {
      gtk_style_context_add_class (context, "dark");
      gtk_style_context_remove_class (context, "light");
    }
814

815
  gtk_widget_queue_draw (GTK_WIDGET (swatch));
Matthias Clasen's avatar
Matthias Clasen committed
816
  g_object_notify (G_OBJECT (swatch), "rgba");
817 818 819
}

gboolean
Matthias Clasen's avatar
Matthias Clasen committed
820 821
gtk_color_swatch_get_rgba (GtkColorSwatch *swatch,
                           GdkRGBA        *color)
822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845
{
  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);
846
  update_icon (swatch);
847 848 849 850 851 852 853
  gtk_widget_queue_draw (GTK_WIDGET (swatch));
}

void
gtk_color_swatch_set_can_drop (GtkColorSwatch *swatch,
                               gboolean        can_drop)
{
854 855 856 857 858 859 860 861 862 863 864 865 866
  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));
    }
867 868
}

Matthias Clasen's avatar
Matthias Clasen committed
869
void
Matthias Clasen's avatar
Matthias Clasen committed
870
gtk_color_swatch_set_use_alpha (GtkColorSwatch *swatch,
Matthias Clasen's avatar
Matthias Clasen committed
871
                                gboolean        use_alpha)
Matthias Clasen's avatar
Matthias Clasen committed
872
{
Matthias Clasen's avatar
Matthias Clasen committed
873
  swatch->priv->use_alpha = use_alpha;
Matthias Clasen's avatar
Matthias Clasen committed
874 875 876
  gtk_widget_queue_draw (GTK_WIDGET (swatch));
}

877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893
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;
}

894
/* vim:set foldmethod=marker: */