cc/contents_scaling_layer.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/contents_scaling_layer.h"
   6 #include "ui/gfx/size_conversions.h"
   7
   8 namespace cc {
   9
  10 gfx::Size ContentsScalingLayer::computeContentBoundsForScale(float scaleX, float scaleY) const {
  11   return gfx::ToCeiledSize(gfx::ScaleSize(bounds(), scaleX, scaleY));
  12 }
  13
  14 ContentsScalingLayer::ContentsScalingLayer()
  15     : m_contentsScale(1.0) {
  16 }
  17
  18 ContentsScalingLayer::~ContentsScalingLayer() {
  19 }
  20
  21 gfx::Size ContentsScalingLayer::contentBounds() const {
  22   return computeContentBoundsForScale(contentsScaleX(), contentsScaleY());
  23 }
  24
  25 float ContentsScalingLayer::contentsScaleX() const {
  26   return m_contentsScale;
  27 }
  28
  29 float ContentsScalingLayer::contentsScaleY() const {
  30   return m_contentsScale;
  31 }
  32
  33 void ContentsScalingLayer::setContentsScale(float contentsScale) {
  34   if (m_contentsScale == contentsScale)
  35     return;
  36   m_contentsScale = contentsScale;
  37   setNeedsDisplay();
  38 }
  39
  40 }  // namespace cc