1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 2012 Red Hat, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
22 #include "gtkcolorswatch.h"
23 #include "gtkroundedboxprivate.h"
25 #include "gtkicontheme.h"
28 #include "gtkmenuitem.h"
29 #include "gtkmenushell.h"
30 #include "gtkbindings.h"
31 #include "gtkprivate.h"
35 struct _GtkColorSwatchPrivate
43 guint contains_pointer : 1;
60 static guint signals[LAST_SIGNAL];
62 G_DEFINE_TYPE (GtkColorSwatch, gtk_color_swatch, GTK_TYPE_DRAWING_AREA)
65 gtk_color_swatch_init (GtkColorSwatch *swatch)
67 swatch->priv = G_TYPE_INSTANCE_GET_PRIVATE (swatch,
68 GTK_TYPE_COLOR_SWATCH,
69 GtkColorSwatchPrivate);
71 gtk_widget_set_can_focus (GTK_WIDGET (swatch), TRUE);
72 gtk_widget_set_events (GTK_WIDGET (swatch), GDK_BUTTON_PRESS_MASK
73 | GDK_BUTTON_RELEASE_MASK
75 | GDK_ENTER_NOTIFY_MASK
76 | GDK_LEAVE_NOTIFY_MASK);
80 swatch_finalize (GObject *object)
82 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
84 g_free (swatch->priv->icon);
86 G_OBJECT_CLASS (gtk_color_swatch_parent_class)->finalize (object);
89 #define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
92 swatch_draw (GtkWidget *widget,
95 GtkColorSwatch *swatch = (GtkColorSwatch*)widget;
98 gdouble width, height;
99 GtkStyleContext *context;
103 context = gtk_widget_get_style_context (widget);
104 state = gtk_widget_get_state_flags (widget);
105 width = gtk_widget_get_allocated_width (widget);
106 height = gtk_widget_get_allocated_height (widget);
108 gtk_style_context_save (context);
111 gtk_style_context_set_state (context, state);
113 _gtk_rounded_box_init_rect (&box, 0, 0, width, height);
114 for (i = 0; i < 4; i++)
115 box.corner[i].horizontal = box.corner[i].vertical = swatch->priv->radius[i];
117 _gtk_rounded_box_path (&box, cr);
119 if (swatch->priv->has_color)
121 gdk_cairo_set_source_rgba (cr, &swatch->priv->color);
122 cairo_fill_preserve (cr);
125 cairo_set_source_rgb (cr, 0.4, 0.4, 0.4);
126 cairo_set_line_width (cr, 1);
129 if (gtk_widget_has_visible_focus (widget))
131 cairo_set_line_width (cr, 2);
132 if (swatch->priv->has_color && INTENSITY (swatch->priv->color.red, swatch->priv->color.green, swatch->priv->color.blue) < 0.5)
133 cairo_set_source_rgba (cr, 1., 1., 1., 0.4);
135 cairo_set_source_rgba (cr, 0., 0., 0., 0.4);
136 _gtk_rounded_box_shrink (&box, 3, 3, 3, 3);
137 _gtk_rounded_box_path (&box, cr);
141 if (swatch->priv->icon)
145 theme = gtk_icon_theme_get_default ();
146 pixbuf = gtk_icon_theme_load_icon (theme, "list-add-symbolic", 16,
147 GTK_ICON_LOOKUP_GENERIC_FALLBACK
148 | GTK_ICON_LOOKUP_USE_BUILTIN,
151 gtk_render_icon (context, cr, pixbuf,
152 (width - gdk_pixbuf_get_width (pixbuf)) / 2,
153 (height - gdk_pixbuf_get_height (pixbuf)) / 2);
154 g_object_unref (pixbuf);
156 else if (swatch->priv->selected)
158 gtk_style_context_get_background_color (context, state, &bg);
159 cairo_new_sub_path (cr);
160 cairo_arc (cr, width / 2, height / 2, 10, 0, 2 * G_PI);
161 cairo_close_path (cr);
162 gdk_cairo_set_source_rgba (cr, &bg);
163 cairo_fill_preserve (cr);
164 if (INTENSITY (swatch->priv->color.red, swatch->priv->color.green, swatch->priv->color.blue) > 0.5)
165 cairo_set_source_rgba (cr, 0., 0., 0., 0.4);
167 cairo_set_source_rgba (cr, 1., 1., 1., 0.4);
168 cairo_set_line_width (cr, 2);
170 gtk_style_context_set_state (context, state | GTK_STATE_FLAG_ACTIVE);
171 gtk_render_check (context, cr, width / 2 - 5, height / 2 - 5, 10, 10);
175 gtk_style_context_restore (context);
181 drag_set_color_icon (GdkDragContext *context,
182 const GdkRGBA *color)
184 cairo_surface_t *surface;
187 surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 48, 32);
188 cr = cairo_create (surface);
189 gdk_cairo_set_source_rgba (cr, color);
192 cairo_surface_set_device_offset (surface, -2, -2);
193 gtk_drag_set_icon_surface (context, surface);
196 cairo_surface_destroy (surface);
200 swatch_drag_begin (GtkWidget *widget,
201 GdkDragContext *context)
203 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
206 gtk_color_swatch_get_color (swatch, &color);
207 drag_set_color_icon (context, &color);
211 swatch_drag_data_get (GtkWidget *widget,
212 GdkDragContext *context,
213 GtkSelectionData *selection_data,
217 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
221 gtk_color_swatch_get_color (swatch, &color);
223 vals[0] = color.red * 0xffff;
224 vals[1] = color.green * 0xffff;
225 vals[2] = color.blue * 0xffff;
226 vals[3] = color.alpha * 0xffff;
228 gtk_selection_data_set (selection_data,
229 gdk_atom_intern_static_string ("application/x-color"),
230 16, (guchar *)vals, 8);
234 swatch_drag_data_received (GtkWidget *widget,
235 GdkDragContext *context,
238 GtkSelectionData *selection_data,
246 length = gtk_selection_data_get_length (selection_data);
251 /* We accept drops with the wrong format, since the KDE color
252 * chooser incorrectly drops application/x-color with format 8.
256 g_warning ("Received invalid color data\n");
260 vals = (guint16 *) gtk_selection_data_get_data (selection_data);
262 color.red = (gdouble)vals[0] / 0xffff;
263 color.green = (gdouble)vals[1] / 0xffff;
264 color.blue = (gdouble)vals[2] / 0xffff;
265 color.alpha = (gdouble)vals[3] / 0xffff;
267 gtk_color_swatch_set_color (GTK_COLOR_SWATCH (widget), &color);
271 swatch_get_property (GObject *object,
276 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
282 gtk_color_swatch_get_color (swatch, &color);
283 g_value_set_boxed (value, &color);
286 g_value_set_boolean (value, swatch->priv->selected);
289 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
295 swatch_set_property (GObject *object,
300 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
305 gtk_color_swatch_set_color (swatch, g_value_get_boxed (value));
308 gtk_color_swatch_set_selected (swatch, g_value_get_boolean (value));
311 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
317 swatch_get_preferred_width (GtkWidget *widget,
325 swatch_get_preferred_height (GtkWidget *widget,
333 swatch_key_press (GtkWidget *widget,
336 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
338 if (event->keyval == GDK_KEY_space ||
339 event->keyval == GDK_KEY_Return ||
340 event->keyval == GDK_KEY_ISO_Enter||
341 event->keyval == GDK_KEY_KP_Enter ||
342 event->keyval == GDK_KEY_KP_Space)
344 if (swatch->priv->has_color && !swatch->priv->selected)
345 gtk_color_swatch_set_selected (swatch, TRUE);
347 g_signal_emit (swatch, signals[ACTIVATE], 0);
351 if (GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->key_press_event (widget, event))
358 swatch_enter (GtkWidget *widget,
359 GdkEventCrossing *event)
361 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
362 swatch->priv->contains_pointer = TRUE;
367 swatch_leave (GtkWidget *widget,
368 GdkEventCrossing *event)
370 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
371 swatch->priv->contains_pointer = FALSE;
376 emit_customize (GtkColorSwatch *swatch)
378 g_signal_emit (swatch, signals[CUSTOMIZE], 0);
382 popup_position_func (GtkMenu *menu,
393 GdkRectangle monitor;
396 widget = GTK_WIDGET (user_data);
397 g_return_if_fail (gtk_widget_get_realized (widget));
398 window = gtk_widget_get_window (widget);
400 screen = gtk_widget_get_screen (widget);
401 monitor_num = gdk_screen_get_monitor_at_window (screen, window);
404 gtk_menu_set_monitor (menu, monitor_num);
406 gdk_window_get_origin (window, &root_x, &root_y);
407 gtk_widget_get_preferred_size (GTK_WIDGET (menu), &req, NULL);
409 /* Put corner of menu centered on swatch */
410 *x = root_x + gtk_widget_get_allocated_width (widget) / 2;
411 *y = root_y + gtk_widget_get_allocated_height (widget) / 2;
414 gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
415 *x = CLAMP (*x, monitor.x, MAX (monitor.x, monitor.width - req.width));
416 *y = CLAMP (*y, monitor.y, MAX (monitor.y, monitor.height - req.height));
420 do_popup (GtkWidget *swatch,
421 GdkEventButton *event)
426 menu = gtk_menu_new ();
427 item = gtk_menu_item_new_with_mnemonic (_("_Customize"));
428 gtk_menu_attach_to_widget (GTK_MENU (menu), swatch, NULL);
430 g_signal_connect_swapped (item, "activate",
431 G_CALLBACK (emit_customize), swatch);
433 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
435 gtk_widget_show_all (item);
438 gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
439 NULL, NULL, event->button, event->time);
441 gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
442 popup_position_func, swatch,
443 0, gtk_get_current_event_time ());
447 swatch_button_press (GtkWidget *widget,
448 GdkEventButton *event)
450 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
452 gtk_widget_grab_focus (GTK_WIDGET (swatch));
454 if (gdk_event_triggers_context_menu ((GdkEvent *) event) &&
455 swatch->priv->has_color)
457 do_popup (widget, event);
460 else if (event->button == GDK_BUTTON_PRIMARY &&
461 swatch->priv->selected)
463 g_signal_emit (swatch, signals[ACTIVATE], 0);
471 swatch_button_release (GtkWidget *widget,
472 GdkEventButton *event)
474 GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
476 gtk_widget_grab_focus (GTK_WIDGET (swatch));
478 if (event->button == GDK_BUTTON_PRIMARY &&
479 swatch->priv->contains_pointer)
481 if (!swatch->priv->has_color)
483 g_signal_emit (swatch, signals[ACTIVATE], 0);
486 else if (!swatch->priv->selected)
488 gtk_color_swatch_set_selected (swatch, TRUE);
497 swatch_menu (GtkWidget *swatch)
499 do_popup (swatch, NULL);
504 gtk_color_swatch_class_init (GtkColorSwatchClass *class)
506 GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
507 GObjectClass *object_class = (GObjectClass *)class;
509 object_class->get_property = swatch_get_property;
510 object_class->set_property = swatch_set_property;
511 object_class->finalize = swatch_finalize;
513 widget_class->get_preferred_width = swatch_get_preferred_width;
514 widget_class->get_preferred_height = swatch_get_preferred_height;
515 widget_class->draw = swatch_draw;
516 widget_class->drag_begin = swatch_drag_begin;
517 widget_class->drag_data_get = swatch_drag_data_get;
518 widget_class->drag_data_received = swatch_drag_data_received;
519 widget_class->key_press_event = swatch_key_press;
520 widget_class->popup_menu = swatch_menu;
521 widget_class->button_press_event = swatch_button_press;
522 widget_class->button_release_event = swatch_button_release;
523 widget_class->enter_notify_event = swatch_enter;
524 widget_class->leave_notify_event = swatch_leave;
527 g_signal_new ("activate",
528 GTK_TYPE_COLOR_SWATCH,
530 G_STRUCT_OFFSET (GtkColorSwatchClass, activate),
531 NULL, NULL, NULL, G_TYPE_NONE, 0);
534 g_signal_new ("customize",
535 GTK_TYPE_COLOR_SWATCH,
537 G_STRUCT_OFFSET (GtkColorSwatchClass, customize),
538 NULL, NULL, NULL, G_TYPE_NONE, 0);
540 g_object_class_install_property (object_class, PROP_COLOR,
541 g_param_spec_boxed ("color", P_("Color"), P_("Color"),
542 GDK_TYPE_RGBA, GTK_PARAM_READWRITE));
544 g_object_class_install_property (object_class, PROP_SELECTED,
545 g_param_spec_boolean ("selected", P_("Selected"), P_("Selected"),
546 FALSE, GTK_PARAM_READWRITE));
548 g_type_class_add_private (object_class, sizeof (GtkColorSwatchPrivate));
552 /* Public API {{{1 */
555 gtk_color_swatch_new (void)
557 return (GtkWidget *) g_object_new (GTK_TYPE_COLOR_SWATCH, NULL);
561 gtk_color_swatch_set_color (GtkColorSwatch *swatch,
562 const GdkRGBA *color)
564 static const GtkTargetEntry targets[] = {
565 { "application/x-color", 0 }
568 if (!swatch->priv->has_color)
569 gtk_drag_source_set (GTK_WIDGET (swatch),
570 GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
572 GDK_ACTION_COPY | GDK_ACTION_MOVE);
574 swatch->priv->has_color = TRUE;
575 swatch->priv->color.red = color->red;
576 swatch->priv->color.green = color->green;
577 swatch->priv->color.blue = color->blue;
578 swatch->priv->color.alpha = color->alpha;
580 gtk_widget_queue_draw (GTK_WIDGET (swatch));
581 g_object_notify (G_OBJECT (swatch), "color");
585 gtk_color_swatch_get_color (GtkColorSwatch *swatch,
588 if (swatch->priv->has_color)
590 color->red = swatch->priv->color.red;
591 color->green = swatch->priv->color.green;
592 color->blue = swatch->priv->color.blue;
593 color->alpha = swatch->priv->color.alpha;
607 gtk_color_swatch_set_corner_radii (GtkColorSwatch *swatch,
610 gdouble bottom_right,
613 swatch->priv->radius[0] = top_left;
614 swatch->priv->radius[1] = top_right;
615 swatch->priv->radius[2] = bottom_right;
616 swatch->priv->radius[3] = bottom_left;
618 gtk_widget_queue_draw (GTK_WIDGET (swatch));
622 gtk_color_swatch_set_selected (GtkColorSwatch *swatch,
625 if (swatch->priv->selected != selected)
627 swatch->priv->selected = selected;
628 gtk_widget_queue_draw (GTK_WIDGET (swatch));
629 g_object_notify (G_OBJECT (swatch), "selected");
634 gtk_color_swatch_set_icon (GtkColorSwatch *swatch,
637 swatch->priv->icon = g_strdup (icon);
638 gtk_widget_queue_draw (GTK_WIDGET (swatch));
642 gtk_color_swatch_set_can_drop (GtkColorSwatch *swatch,
645 static const GtkTargetEntry targets[] = {
646 { "application/x-color", 0 }
649 if (!swatch->priv->can_drop)
650 gtk_drag_dest_set (GTK_WIDGET (swatch),
651 GTK_DEST_DEFAULT_HIGHLIGHT |
652 GTK_DEST_DEFAULT_MOTION |
653 GTK_DEST_DEFAULT_DROP,
657 swatch->priv->can_drop = can_drop;
660 /* vim:set foldmethod=marker: */