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
43namespace WebCore {
44
45static 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
54int screenDepth(Widget* w)
55{
56    return QApplication::desktop()->screen(screenNumber(w))->depth();
57}
58
59int 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
87bool screenIsMonochrome(Widget* w)
88{
89    return QApplication::desktop()->screen(screenNumber(w))->colorCount() == 2;
90}
91
92FloatRect 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
98FloatRect 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