ui/gfx/image/image_skia_rep.cc

   1 // Copyright (c) 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 "ui/gfx/image/image_skia_rep.h"
   6
   7 #include "base/logging.h"
   8
   9 namespace gfx {
  10
  11 ImageSkiaRep::ImageSkiaRep() : scale_(0.0f) {
  12 }
  13
  14 ImageSkiaRep::~ImageSkiaRep() {
  15 }
  16
  17 ImageSkiaRep::ImageSkiaRep(const gfx::Size& size, float scale) : scale_(scale) {
  18   bitmap_.allocN32Pixels(static_cast<int>(size.width() * this->scale()),
  19                          static_cast<int>(size.height() * this->scale()));
  20   bitmap_.eraseColor(SK_ColorRED);
  21 }
  22
  23 ImageSkiaRep::ImageSkiaRep(const SkBitmap& src, float scale)
  24     : bitmap_(src),
  25       scale_(scale) {
  26 }
  27
  28 int ImageSkiaRep::GetWidth() const {
  29   return static_cast<int>(bitmap_.width() / scale());
  30 }
  31
  32 int ImageSkiaRep::GetHeight() const {
  33   return static_cast<int>(bitmap_.height() / scale());
  34 }
  35
  36 void ImageSkiaRep::SetScaled() {
  37   DCHECK_EQ(0.0f, scale_);
  38   if (scale_ == 0.0f)
  39     scale_ = 1.0f;
  40 }
  41
  42 }  // namespace gfx