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   bitmap_.setImmutable();
  22 }
  23
  24 ImageSkiaRep::ImageSkiaRep(const SkBitmap& src, float scale)
  25     : bitmap_(src),
  26       scale_(scale) {
  27   bitmap_.setImmutable();
  28 }
  29
  30 int ImageSkiaRep::GetWidth() const {
  31   return static_cast<int>(bitmap_.width() / scale());
  32 }
  33
  34 int ImageSkiaRep::GetHeight() const {
  35   return static_cast<int>(bitmap_.height() / scale());
  36 }
  37
  38 void ImageSkiaRep::SetScaled() {
  39   DCHECK_EQ(0.0f, scale_);
  40   if (scale_ == 0.0f)
  41     scale_ = 1.0f;
  42 }
  43
  44 }  // namespace gfx