ui/gfx/image/image_skia_rep.cc

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/gfx/image/image_skia_rep.h"

#include "base/logging.h"

namespace gfx {

ImageSkiaRep::ImageSkiaRep() : scale_(0.0f) {
}

ImageSkiaRep::~ImageSkiaRep() {
}

ImageSkiaRep::ImageSkiaRep(const gfx::Size& size, float scale) : scale_(scale) {
  bitmap_.setConfig(SkBitmap::kARGB_8888_Config,
                    static_cast<int>(size.width() * this->scale()),
                    static_cast<int>(size.height() * this->scale()));
  bitmap_.allocPixels();
  bitmap_.eraseColor(SK_ColorRED);
}

ImageSkiaRep::ImageSkiaRep(const SkBitmap& src, float scale)
    : bitmap_(src),
      scale_(scale) {
}

int ImageSkiaRep::GetWidth() const {
  return static_cast<int>(bitmap_.width() / scale());
}

int ImageSkiaRep::GetHeight() const {
  return static_cast<int>(bitmap_.height() / scale());
}

void ImageSkiaRep::SetScaled() {
  DCHECK_EQ(0.0f, scale_);
  if (scale_ == 0.0f)
    scale_ = 1.0f;
}

}  // namespace gfx