1 /*
2 * Copyright (C) 2007 Apple Inc. All rights reserved.
3 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
4 * Copyright (C) 2008 Holger Hans Peter Freyther
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
16 * its contributors may be used to endorse or promote products derived
17 * from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "PlatformScreen.h"
33
34 #include "FloatRect.h"
35 #include "Frame.h"
36 #include "FrameView.h"
37 #include "HostWindow.h"
38 #include "Widget.h"
39 #include "QWebPageClient.h"
40 #include <QApplication>
41 #include <QDesktopWidget>
42
43 namespace WebCore {
44
screenNumber(Widget * w)45 static int screenNumber(Widget* w)
46 {
47 if (!w)
48 return 0;
49
50 QWebPageClient* client = w->root()->hostWindow()->platformPageClient();
51 return client ? client->screenNumber() : 0;
52 }
53
screenDepth(Widget * w)54 int screenDepth(Widget* w)
55 {
56 return QApplication::desktop()->screen(screenNumber(w))->depth();
57 }
58
screenDepthPerComponent(Widget * w)59 int screenDepthPerComponent(Widget* w)
60 {
61 int depth = QApplication::desktop()->screen(0)->depth();
62 if (w) {
63 QWebPageClient* client = w->root()->hostWindow()->platformPageClient();
64
65 if (client) {
66 QWidget* view = client->ownerWidget();
67 if (view)
68 depth = view->depth();
69 }
70 }
71 // An interface to establish the actual number of bits per color
72 // doesn't exist in Qt, or probably at all, so use common-sense
73 // values for each screen depth and assume RGB/RGBA where appropriate.
74 // Per http://www.w3.org/TR/css3-mediaqueries/#color, 'If different color
75 // components are represented by different number of bits, the smallest
76 // number is used.'
77 switch (depth) {
78 case 8:
79 return 2;
80 case 32:
81 return 8;
82 default:
83 return qRound(depth / 3);
84 }
85 }
86
screenIsMonochrome(Widget * w)87 bool screenIsMonochrome(Widget* w)
88 {
89 return QApplication::desktop()->screen(screenNumber(w))->colorCount() == 2;
90 }
91
screenRect(Widget * w)92 FloatRect screenRect(Widget* w)
93 {
94 QRect r = QApplication::desktop()->screenGeometry(screenNumber(w));
95 return FloatRect(r.x(), r.y(), r.width(), r.height());
96 }
97
screenAvailableRect(Widget * w)98 FloatRect screenAvailableRect(Widget* w)
99 {
100 QRect r = QApplication::desktop()->availableGeometry(screenNumber(w));
101 return FloatRect(r.x(), r.y(), r.width(), r.height());
102 }
103
104 } // namespace WebCore
105