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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PRINTING_IMAGE_H_
#define PRINTING_IMAGE_H_
#include <stddef.h>
#include <stdint.h>
#include <vector>
#include "base/check.h"
#include "ui/gfx/geometry/size.h"
namespace printing {
// Lightweight raw-bitmap management. The image, once initialized, is immutable.
// The only purpose is testing image contents.
class Image {
public:
// Creates an image from raw ARGB pixel data, 32 bits per pixel.
Image(gfx::Size size, int line_stride, std::vector<unsigned char> buffer);
Image(const Image& image);
Image& operator=(const Image& image) = delete;
~Image();
bool operator==(const Image& other) const;
const gfx::Size& size() const { return size_; }
// Returns the 0x0RGB value of the pixel at the given location.
uint32_t Color(uint32_t color) const {
return color & 0xFFFFFF; // Strip out alpha channel.
}
uint32_t pixel_at(int x, int y) const {
DCHECK(x >= 0 && x < size_.width());
DCHECK(y >= 0 && y < size_.height());
const uint32_t* data = reinterpret_cast<const uint32_t*>(&*data_.begin());
const uint32_t* data_row = data + y * row_length_ / sizeof(uint32_t);
return Color(data_row[x]);
}
private:
// Pixel dimensions of the image.
const gfx::Size size_;
// Length of a line in bytes.
const int row_length_;
// Actual bitmap data in arrays of RGBAs (so when loaded as uint32_t, it's
// 0xABGR).
const std::vector<unsigned char> data_;
};
} // namespace printing
#endif // PRINTING_IMAGE_H_
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