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Viewing changes to .pc/18_gtk3_gdk_macros.patch/src/ui/tile-preview.c

  • Committer: Bazaar Package Importer
  • Author(s): Michael Terry
  • Date: 2010-12-09 10:55:23 UTC
  • Revision ID: james.westby@ubuntu.com-20101209105523-a0fhznet2ssp9whv
Tags: 2.91.3-0ubuntu2
* Rebuild for libgirepository rename
* debian/patches/18_gtk3_gdk_macros.patch,
  debian/patches/19_gtk3_theme_states.patch,
  debian/patches/20_gtk3_testgradient.patch:
  - A collection of patches from upstream git to fix building against
    gtk3.

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.pc/18_gtk3_gdk_macros.patch/src/ui/tile-preview.c
 
1
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
 
2
 
 
3
/* Mutter tile-preview marks the area a window will *ehm* snap to */
 
4
 
 
5
/*
 
6
 * Copyright (C) 2010 Florian Müllner
 
7
 *
 
8
 * This program is free software; you can redistribute it and/or
 
9
 * modify it under the terms of the GNU General Public License as
 
10
 * published by the Free Software Foundation; either version 2 of the
 
11
 * License, or (at your option) any later version.
 
12
 *
 
13
 * This program is distributed in the hope that it will be useful, but
 
14
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
16
 * General Public License for more details.
 
17
 *
 
18
 * You should have received a copy of the GNU General Public License
 
19
 * along with this program; if not, write to the Free Software
 
20
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 
21
 * 02111-1307, USA.
 
22
 */
 
23
 
 
24
#include <config.h>
 
25
 
 
26
#include <gtk/gtk.h>
 
27
#include <cairo.h>
 
28
 
 
29
#include "tile-preview.h"
 
30
#include "core.h"
 
31
 
 
32
#define OUTLINE_WIDTH 5  /* frame width in non-composite case */
 
33
 
 
34
 
 
35
struct _MetaTilePreview {
 
36
  GtkWidget     *preview_window;
 
37
  gulong         create_serial;
 
38
 
 
39
  GdkColor      *preview_color;
 
40
  guchar         preview_alpha;
 
41
 
 
42
  MetaRectangle  tile_rect;
 
43
 
 
44
  gboolean       has_alpha: 1;
 
45
};
 
46
 
 
47
static gboolean
 
48
meta_tile_preview_draw (GtkWidget *widget,
 
49
                        cairo_t   *cr,
 
50
                        gpointer   user_data)
 
51
{
 
52
  MetaTilePreview *preview = user_data;
 
53
 
 
54
  cairo_set_line_width (cr, 1.0);
 
55
 
 
56
  if (preview->has_alpha)
 
57
    {
 
58
      /* Fill the preview area with a transparent color */
 
59
      cairo_set_source_rgba (cr,
 
60
                             (double)preview->preview_color->red   / 0xFFFF,
 
61
                             (double)preview->preview_color->green / 0xFFFF,
 
62
                             (double)preview->preview_color->blue  / 0xFFFF,
 
63
                             (double)preview->preview_alpha / 0xFF);
 
64
 
 
65
      cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
 
66
      cairo_paint (cr);
 
67
 
 
68
      /* Use the opaque color for the border */
 
69
      gdk_cairo_set_source_color (cr, preview->preview_color);
 
70
    }
 
71
  else
 
72
    {
 
73
      GtkStyle *style = gtk_widget_get_style (preview->preview_window);
 
74
 
 
75
      gdk_cairo_set_source_color (cr, &style->white);
 
76
 
 
77
      cairo_rectangle (cr,
 
78
                       OUTLINE_WIDTH - 0.5, OUTLINE_WIDTH - 0.5,
 
79
                       preview->tile_rect.width - 2 * (OUTLINE_WIDTH - 1) - 1,
 
80
                       preview->tile_rect.height - 2 * (OUTLINE_WIDTH - 1) - 1);
 
81
      cairo_stroke (cr);
 
82
    }
 
83
 
 
84
  cairo_rectangle (cr,
 
85
                   0.5, 0.5,
 
86
                   preview->tile_rect.width - 1,
 
87
                   preview->tile_rect.height - 1);
 
88
  cairo_stroke (cr);
 
89
 
 
90
  return FALSE;
 
91
}
 
92
 
 
93
static void
 
94
on_preview_window_style_set (GtkWidget *widget,
 
95
                             GtkStyle  *previous,
 
96
                             gpointer   user_data)
 
97
{
 
98
  MetaTilePreview *preview = user_data;
 
99
  GtkStyle *style;
 
100
 
 
101
  style = gtk_rc_get_style_by_paths (gtk_widget_get_settings (widget),
 
102
                                     "GtkWindow.GtkIconView",
 
103
                                     "GtkWindow.GtkIconView",
 
104
                                     GTK_TYPE_ICON_VIEW);
 
105
 
 
106
  if (style != NULL)
 
107
    g_object_ref (style);
 
108
  else
 
109
    style = gtk_style_new ();
 
110
 
 
111
  gtk_style_get (style, GTK_TYPE_ICON_VIEW,
 
112
                 "selection-box-color", &preview->preview_color,
 
113
                 "selection-box-alpha", &preview->preview_alpha,
 
114
                 NULL);
 
115
  if (!preview->preview_color)
 
116
    {
 
117
      GdkColor selection = style->base[GTK_STATE_SELECTED];
 
118
      preview->preview_color = gdk_color_copy (&selection);
 
119
    }
 
120
 
 
121
  g_object_unref (style);
 
122
}
 
123
 
 
124
MetaTilePreview *
 
125
meta_tile_preview_new (int      screen_number,
 
126
                       gboolean composited)
 
127
{
 
128
  MetaTilePreview *preview;
 
129
  GdkScreen *screen;
 
130
 
 
131
  screen = gdk_display_get_screen (gdk_display_get_default (), screen_number);
 
132
 
 
133
  preview = g_new (MetaTilePreview, 1);
 
134
 
 
135
  preview->preview_window = gtk_window_new (GTK_WINDOW_POPUP);
 
136
 
 
137
  gtk_window_set_screen (GTK_WINDOW (preview->preview_window), screen);
 
138
  gtk_widget_set_app_paintable (preview->preview_window, TRUE);
 
139
 
 
140
  preview->preview_color = NULL;
 
141
  preview->preview_alpha = 0xFF;
 
142
 
 
143
  preview->tile_rect.x = preview->tile_rect.y = 0;
 
144
  preview->tile_rect.width = preview->tile_rect.height = 0;
 
145
 
 
146
  preview->has_alpha = composited &&
 
147
                       (gdk_screen_get_rgba_visual (screen) != NULL);
 
148
 
 
149
  if (preview->has_alpha)
 
150
    {
 
151
      gtk_widget_set_visual (preview->preview_window,
 
152
                             gdk_screen_get_rgba_visual (screen));
 
153
 
 
154
      g_signal_connect (preview->preview_window, "style-set",
 
155
                        G_CALLBACK (on_preview_window_style_set), preview);
 
156
    }
 
157
 
 
158
  /* We make an assumption that XCreateWindow will be the first operation
 
159
   * when calling gtk_widget_realize() (via gdk_window_new()), or that it
 
160
   * is at least "close enough".
 
161
   */
 
162
  preview->create_serial = XNextRequest (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()));
 
163
  gtk_widget_realize (preview->preview_window);
 
164
  g_signal_connect (preview->preview_window, "draw",
 
165
                    G_CALLBACK (meta_tile_preview_draw), preview);
 
166
 
 
167
  return preview;
 
168
}
 
169
 
 
170
void
 
171
meta_tile_preview_free (MetaTilePreview *preview)
 
172
{
 
173
  gtk_widget_destroy (preview->preview_window);
 
174
 
 
175
  if (preview->preview_color)
 
176
    gdk_color_free (preview->preview_color);
 
177
 
 
178
  g_free (preview);
 
179
}
 
180
 
 
181
void
 
182
meta_tile_preview_show (MetaTilePreview *preview,
 
183
                        MetaRectangle   *tile_rect)
 
184
{
 
185
  GdkWindow *window;
 
186
  GdkRectangle old_rect;
 
187
 
 
188
  if (gtk_widget_get_visible (preview->preview_window)
 
189
      && preview->tile_rect.x == tile_rect->x
 
190
      && preview->tile_rect.y == tile_rect->y
 
191
      && preview->tile_rect.width == tile_rect->width
 
192
      && preview->tile_rect.height == tile_rect->height)
 
193
    return; /* nothing to do */
 
194
 
 
195
  gtk_widget_show (preview->preview_window);
 
196
  window = gtk_widget_get_window (preview->preview_window);
 
197
  meta_core_lower_beneath_focus_window (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
 
198
                                        GDK_WINDOW_XWINDOW (window),
 
199
                                        gtk_get_current_event_time ());
 
200
 
 
201
  old_rect.x = old_rect.y = 0;
 
202
  old_rect.width = preview->tile_rect.width;
 
203
  old_rect.height = preview->tile_rect.height;
 
204
 
 
205
  gdk_window_invalidate_rect (window, &old_rect, FALSE);
 
206
 
 
207
  preview->tile_rect = *tile_rect;
 
208
 
 
209
  gdk_window_move_resize (window,
 
210
                          preview->tile_rect.x, preview->tile_rect.y,
 
211
                          preview->tile_rect.width, preview->tile_rect.height);
 
212
 
 
213
  if (!preview->has_alpha)
 
214
    {
 
215
      cairo_region_t *outer_region, *inner_region;
 
216
      GdkRectangle outer_rect, inner_rect;
 
217
      GdkColor black;
 
218
 
 
219
      black = gtk_widget_get_style (preview->preview_window)->black;
 
220
      gdk_window_set_background (window, &black);
 
221
 
 
222
      outer_rect.x = outer_rect.y = 0;
 
223
      outer_rect.width = preview->tile_rect.width;
 
224
      outer_rect.height = preview->tile_rect.height;
 
225
 
 
226
      inner_rect.x = OUTLINE_WIDTH;
 
227
      inner_rect.y = OUTLINE_WIDTH;
 
228
      inner_rect.width = outer_rect.width - 2 * OUTLINE_WIDTH;
 
229
      inner_rect.height = outer_rect.height - 2 * OUTLINE_WIDTH;
 
230
 
 
231
      outer_region = cairo_region_create_rectangle (&outer_rect);
 
232
      inner_region = cairo_region_create_rectangle (&inner_rect);
 
233
 
 
234
      cairo_region_subtract (outer_region, inner_region);
 
235
      cairo_region_destroy (inner_region);
 
236
 
 
237
      gdk_window_shape_combine_region (window, outer_region, 0, 0);
 
238
      cairo_region_destroy (outer_region);
 
239
    }
 
240
}
 
241
 
 
242
void
 
243
meta_tile_preview_hide (MetaTilePreview *preview)
 
244
{
 
245
  gtk_widget_hide (preview->preview_window);
 
246
}
 
247
 
 
248
Window
 
249
meta_tile_preview_get_xwindow (MetaTilePreview *preview,
 
250
                               gulong          *create_serial)
 
251
{
 
252
  GdkWindow *window = gtk_widget_get_window (preview->preview_window);
 
253
 
 
254
  if (create_serial)
 
255
    *create_serial = preview->create_serial;
 
256
 
 
257
  return GDK_WINDOW_XWINDOW (window);
 
258
}