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 "core/page/ChromeClient.h"
  39 #include "public/platform/WebScreenInfo.h"
  40
  41 namespace blink {
  42
  43 Screen::Screen(LocalFrame* frame)
  44     : DOMWindowProperty(frame)
  45 {
  46 }
  47
  48 int Screen::height() const
  49 {
  50     if (!m_frame)
  51         return 0;
  52     FrameHost* host = m_frame->host();
  53     if (!host)
  54         return 0;
  55     if (host->settings().reportScreenSizeInPhysicalPixelsQuirk())
  56         return lroundf(host->chromeClient().screenInfo().rect.height * host->deviceScaleFactor());
  57     return host->chromeClient().screenInfo().rect.height;
  58 }
  59
  60 int Screen::width() const
  61 {
  62     if (!m_frame)
  63         return 0;
  64     FrameHost* host = m_frame->host();
  65     if (!host)
  66         return 0;
  67     if (host->settings().reportScreenSizeInPhysicalPixelsQuirk())
  68         return lroundf(host->chromeClient().screenInfo().rect.width * host->deviceScaleFactor());
  69     return host->chromeClient().screenInfo().rect.width;
  70 }
  71
  72 unsigned Screen::colorDepth() const
  73 {
  74     if (!m_frame || !m_frame->host())
  75         return 0;
  76     return static_cast<unsigned>(m_frame->host()->chromeClient().screenInfo().depth);
  77 }
  78
  79 unsigned Screen::pixelDepth() const
  80 {
  81     if (!m_frame)
  82         return 0;
  83     return static_cast<unsigned>(m_frame->host()->chromeClient().screenInfo().depth);
  84 }
  85
  86 int Screen::availLeft() const
  87 {
  88     if (!m_frame)
  89         return 0;
  90     FrameHost* host = m_frame->host();
  91     if (!host)
  92         return 0;
  93     if (host->settings().reportScreenSizeInPhysicalPixelsQuirk())
  94         return lroundf(host->chromeClient().screenInfo().availableRect.x * host->deviceScaleFactor());
  95     return static_cast<int>(host->chromeClient().screenInfo().availableRect.x);
  96 }
  97
  98 int Screen::availTop() const
  99 {
 100     if (!m_frame)
 101         return 0;
 102     FrameHost* host = m_frame->host();
 103     if (!host)
 104         return 0;
 105     if (host->settings().reportScreenSizeInPhysicalPixelsQuirk())
 106         return lroundf(host->chromeClient().screenInfo().availableRect.y * host->deviceScaleFactor());
 107     return static_cast<int>(host->chromeClient().screenInfo().availableRect.y);
 108 }
 109
 110 int Screen::availHeight() const
 111 {
 112     if (!m_frame)
 113         return 0;
 114     FrameHost* host = m_frame->host();
 115     if (!host)
 116         return 0;
 117     if (host->settings().reportScreenSizeInPhysicalPixelsQuirk())
 118         return lroundf(host->chromeClient().screenInfo().availableRect.height * host->deviceScaleFactor());
 119     return host->chromeClient().screenInfo().availableRect.height;
 120 }
 121
 122 int Screen::availWidth() const
 123 {
 124     if (!m_frame)
 125         return 0;
 126     FrameHost* host = m_frame->host();
 127     if (!host)
 128         return 0;
 129     if (host->settings().reportScreenSizeInPhysicalPixelsQuirk())
 130         return lroundf(host->chromeClient().screenInfo().availableRect.width * host->deviceScaleFactor());
 131     return host->chromeClient().screenInfo().availableRect.width;
 132 }
 133
 134 DEFINE_TRACE(Screen)
 135 {
 136     HeapSupplementable<Screen>::trace(visitor);
 137     DOMWindowProperty::trace(visitor);
 138 }
 139
 140 } // namespace blink