src/third_party/WebKit/Source/core/frame/Screen.cpp

   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
  41 namespace WebCore {
  42
  43 Screen::Screen(LocalFrame* frame)
  44     : DOMWindowProperty(frame)
  45 {
  46     ScriptWrappable::init(this);
  47 }
  48
  49 unsigned Screen::height() const
  50 {
  51     if (!m_frame)
  52         return 0;
  53     FrameHost* host = m_frame->host();
  54     if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
  55         return lroundf(screenRect(m_frame->view()).height() * host->deviceScaleFactor());
  56     return static_cast<unsigned>(screenRect(m_frame->view()).height());
  57 }
  58
  59 unsigned Screen::width() const
  60 {
  61     if (!m_frame)
  62         return 0;
  63     FrameHost* host = m_frame->host();
  64     if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
  65         return lroundf(screenRect(m_frame->view()).width() * host->deviceScaleFactor());
  66     return static_cast<unsigned>(screenRect(m_frame->view()).width());
  67 }
  68
  69 unsigned Screen::colorDepth() const
  70 {
  71     if (!m_frame)
  72         return 0;
  73     return static_cast<unsigned>(screenDepth(m_frame->view()));
  74 }
  75
  76 unsigned Screen::pixelDepth() const
  77 {
  78     if (!m_frame)
  79         return 0;
  80     return static_cast<unsigned>(screenDepth(m_frame->view()));
  81 }
  82
  83 int Screen::availLeft() const
  84 {
  85     if (!m_frame)
  86         return 0;
  87     FrameHost* host = m_frame->host();
  88     if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
  89         return lroundf(screenAvailableRect(m_frame->view()).x() * host->deviceScaleFactor());
  90     return static_cast<int>(screenAvailableRect(m_frame->view()).x());
  91 }
  92
  93 int Screen::availTop() const
  94 {
  95     if (!m_frame)
  96         return 0;
  97     FrameHost* host = m_frame->host();
  98     if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
  99         return lroundf(screenAvailableRect(m_frame->view()).y() * host->deviceScaleFactor());
 100     return static_cast<int>(screenAvailableRect(m_frame->view()).y());
 101 }
 102
 103 unsigned Screen::availHeight() const
 104 {
 105     if (!m_frame)
 106         return 0;
 107     FrameHost* host = m_frame->host();
 108     if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
 109         return lroundf(screenAvailableRect(m_frame->view()).height() * host->deviceScaleFactor());
 110     return static_cast<unsigned>(screenAvailableRect(m_frame->view()).height());
 111 }
 112
 113 unsigned Screen::availWidth() const
 114 {
 115     if (!m_frame)
 116         return 0;
 117     FrameHost* host = m_frame->host();
 118     if (host && host->settings().reportScreenSizeInPhysicalPixelsQuirk())
 119         return lroundf(screenAvailableRect(m_frame->view()).width() * host->deviceScaleFactor());
 120     return static_cast<unsigned>(screenAvailableRect(m_frame->view()).width());
 121 }
 122
 123 void Screen::trace(Visitor* visitor)
 124 {
 125     WillBeHeapSupplementable<Screen>::trace(visitor);
 126 }
 127
 128 } // namespace WebCore