widget/Screen.cpp

   1 /* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 2; -*- */
   2 /* vim: set sw=2 ts=8 et tw=80 : */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "Screen.h"
   8
   9 #include "mozilla/dom/DOMTypes.h"
  10 #include "mozilla/StaticPrefs_layout.h"
  11
  12 namespace mozilla {
  13 namespace widget {
  14
  15 NS_IMPL_ISUPPORTS(Screen, nsIScreen)
  16
  17 Screen::Screen(LayoutDeviceIntRect aRect, LayoutDeviceIntRect aAvailRect,
  18                uint32_t aPixelDepth, uint32_t aColorDepth,
  19                DesktopToLayoutDeviceScale aContentsScale,
  20                CSSToLayoutDeviceScale aDefaultCssScale, float aDPI)
  21     : mRect(aRect),
  22       mAvailRect(aAvailRect),
  23       mRectDisplayPix(RoundedToInt(aRect / aContentsScale)),
  24       mAvailRectDisplayPix(RoundedToInt(aAvailRect / aContentsScale)),
  25       mPixelDepth(aPixelDepth),
  26       mColorDepth(aColorDepth),
  27       mContentsScale(aContentsScale),
  28       mDefaultCssScale(aDefaultCssScale),
  29       mDPI(aDPI) {}
  30
  31 Screen::Screen(const mozilla::dom::ScreenDetails& aScreen)
  32     : mRect(aScreen.rect()),
  33       mAvailRect(aScreen.availRect()),
  34       mRectDisplayPix(aScreen.rectDisplayPix()),
  35       mAvailRectDisplayPix(aScreen.availRectDisplayPix()),
  36       mPixelDepth(aScreen.pixelDepth()),
  37       mColorDepth(aScreen.colorDepth()),
  38       mContentsScale(aScreen.contentsScaleFactor()),
  39       mDefaultCssScale(aScreen.defaultCSSScaleFactor()),
  40       mDPI(aScreen.dpi()) {}
  41
  42 Screen::Screen(const Screen& aOther)
  43     : mRect(aOther.mRect),
  44       mAvailRect(aOther.mAvailRect),
  45       mRectDisplayPix(aOther.mRectDisplayPix),
  46       mAvailRectDisplayPix(aOther.mAvailRectDisplayPix),
  47       mPixelDepth(aOther.mPixelDepth),
  48       mColorDepth(aOther.mColorDepth),
  49       mContentsScale(aOther.mContentsScale),
  50       mDefaultCssScale(aOther.mDefaultCssScale),
  51       mDPI(aOther.mDPI) {}
  52
  53 mozilla::dom::ScreenDetails Screen::ToScreenDetails() {
  54   return mozilla::dom::ScreenDetails(
  55       mRect, mRectDisplayPix, mAvailRect, mAvailRectDisplayPix, mPixelDepth,
  56       mColorDepth, mContentsScale, mDefaultCssScale, mDPI);
  57 }
  58
  59 NS_IMETHODIMP
  60 Screen::GetRect(int32_t* aOutLeft, int32_t* aOutTop, int32_t* aOutWidth,
  61                 int32_t* aOutHeight) {
  62   mRect.GetRect(aOutLeft, aOutTop, aOutWidth, aOutHeight);
  63   return NS_OK;
  64 }
  65
  66 NS_IMETHODIMP
  67 Screen::GetRectDisplayPix(int32_t* aOutLeft, int32_t* aOutTop,
  68                           int32_t* aOutWidth, int32_t* aOutHeight) {
  69   mRectDisplayPix.GetRect(aOutLeft, aOutTop, aOutWidth, aOutHeight);
  70   return NS_OK;
  71 }
  72
  73 NS_IMETHODIMP
  74 Screen::GetAvailRect(int32_t* aOutLeft, int32_t* aOutTop, int32_t* aOutWidth,
  75                      int32_t* aOutHeight) {
  76   mAvailRect.GetRect(aOutLeft, aOutTop, aOutWidth, aOutHeight);
  77   return NS_OK;
  78 }
  79
  80 NS_IMETHODIMP
  81 Screen::GetAvailRectDisplayPix(int32_t* aOutLeft, int32_t* aOutTop,
  82                                int32_t* aOutWidth, int32_t* aOutHeight) {
  83   mAvailRectDisplayPix.GetRect(aOutLeft, aOutTop, aOutWidth, aOutHeight);
  84   return NS_OK;
  85 }
  86
  87 NS_IMETHODIMP
  88 Screen::GetPixelDepth(int32_t* aPixelDepth) {
  89   *aPixelDepth = mPixelDepth;
  90   return NS_OK;
  91 }
  92
  93 NS_IMETHODIMP
  94 Screen::GetColorDepth(int32_t* aColorDepth) {
  95   *aColorDepth = mColorDepth;
  96   return NS_OK;
  97 }
  98
  99 NS_IMETHODIMP
 100 Screen::GetContentsScaleFactor(double* aOutScale) {
 101   *aOutScale = mContentsScale.scale;
 102   return NS_OK;
 103 }
 104
 105 NS_IMETHODIMP
 106 Screen::GetDefaultCSSScaleFactor(double* aOutScale) {
 107   double scale = StaticPrefs::layout_css_devPixelsPerPx();
 108   if (scale > 0.0) {
 109     *aOutScale = scale;
 110   } else {
 111     *aOutScale = mDefaultCssScale.scale;
 112   }
 113   return NS_OK;
 114 }
 115
 116 NS_IMETHODIMP
 117 Screen::GetDpi(float* aDPI) {
 118   *aDPI = mDPI;
 119   return NS_OK;
 120 }
 121
 122 }  // namespace widget
 123 }  // namespace mozilla