1/*
2 * Copyright (C) 2007 Apple Inc.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29
30#include "config.h"
31#include "core/frame/Screen.h"
32
33#include "core/frame/FrameHost.h"
34#include "core/frame/FrameView.h"
35#include "core/frame/LocalFrame.h"
36#include "core/frame/Settings.h"
37#include "core/inspector/InspectorInstrumentation.h"
38#include "platform/PlatformScreen.h"
39#include "platform/geometry/FloatRect.h"
40
41namespace blink {
42
43Screen::Screen(LocalFrame* frame)
44    : DOMWindowProperty(frame)
45{
46}
47
48unsigned Screen::height() const
49{
50    if (!m_frame)
51        return 0;
52    FrameHost* host = m_frame->host();
53    if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
54        return lroundf(screenRect(m_frame->view()).height() * host->deviceScaleFactor());
55    return static_cast<unsigned>(screenRect(m_frame->view()).height());
56}
57
58unsigned Screen::width() const
59{
60    if (!m_frame)
61        return 0;
62    FrameHost* host = m_frame->host();
63    if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
64        return lroundf(screenRect(m_frame->view()).width() * host->deviceScaleFactor());
65    return static_cast<unsigned>(screenRect(m_frame->view()).width());
66}
67
68unsigned Screen::colorDepth() const
69{
70    if (!m_frame)
71        return 0;
72    return static_cast<unsigned>(screenDepth(m_frame->view()));
73}
74
75unsigned Screen::pixelDepth() const
76{
77    if (!m_frame)
78        return 0;
79    return static_cast<unsigned>(screenDepth(m_frame->view()));
80}
81
82int Screen::availLeft() const
83{
84    if (!m_frame)
85        return 0;
86    FrameHost* host = m_frame->host();
87    if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
88        return lroundf(screenAvailableRect(m_frame->view()).x() * host->deviceScaleFactor());
89    return static_cast<int>(screenAvailableRect(m_frame->view()).x());
90}
91
92int Screen::availTop() const
93{
94    if (!m_frame)
95        return 0;
96    FrameHost* host = m_frame->host();
97    if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
98        return lroundf(screenAvailableRect(m_frame->view()).y() * host->deviceScaleFactor());
99    return static_cast<int>(screenAvailableRect(m_frame->view()).y());
100}
101
102unsigned Screen::availHeight() const
103{
104    if (!m_frame)
105        return 0;
106    FrameHost* host = m_frame->host();
107    if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
108        return lroundf(screenAvailableRect(m_frame->view()).height() * host->deviceScaleFactor());
109    return static_cast<unsigned>(screenAvailableRect(m_frame->view()).height());
110}
111
112unsigned Screen::availWidth() const
113{
114    if (!m_frame)
115        return 0;
116    FrameHost* host = m_frame->host();
117    if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
118        return lroundf(screenAvailableRect(m_frame->view()).width() * host->deviceScaleFactor());
119    return static_cast<unsigned>(screenAvailableRect(m_frame->view()).width());
120}
121
122void Screen::trace(Visitor* visitor)
123{
124#if ENABLE(OILPAN)
125    HeapSupplementable<Screen>::trace(visitor);
126#endif
127    DOMWindowProperty::trace(visitor);
128}
129
130} // namespace blink
131