chrome/utility/cloud_print/bitmap_image.cc

   1 // Copyright 2013 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 "base/logging.h"
   6 #include "chrome/utility/cloud_print/bitmap_image.h"
   7
   8 namespace cloud_print {
   9
  10 namespace {
  11 const uint8 kCurrentlySupportedNumberOfChannels = 4;
  12 }
  13
  14 BitmapImage::BitmapImage(const gfx::Size& size,
  15                          Colorspace colorspace)
  16     : size_(size),
  17       colorspace_(colorspace),
  18       data_(new uint8[size.GetArea() * channels()]) {
  19 }
  20
  21 BitmapImage::~BitmapImage() {
  22 }
  23
  24 uint8 BitmapImage::channels() const {
  25   return kCurrentlySupportedNumberOfChannels;
  26 }
  27
  28 const uint8* BitmapImage::GetPixel(const gfx::Point& point) const {
  29   DCHECK_LT(point.x(), size_.width());
  30   DCHECK_LT(point.y(), size_.height());
  31   return data_.get() + (point.y() * size_.width() + point.x()) * channels();
  32 }
  33
  34 }  // namespace cloud_print