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// Copyright 2018 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 "build/build_config.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/gfx_export.h"
namespace gfx {
// An ImageSkiaRep represents an image and the scale factor it is intended for.
// 0.0f scale is used to indicate that this ImageSkiaRep is used for unscaled
// image (ImageSkia does not automatically scale the image).
// iOS does not support cc's PaintOpBuffer and instead uses cocoa frameworks
// image formats.
class GFX_EXPORT ImageSkiaRep {
// Create null bitmap.
// Note: This is for testing purpose only.
// Creates a bitmap with kARGB_8888_Config config with given |size| in DIP.
// This allocates pixels in the bitmap. It is guaranteed that the data in the
// bitmap are initialized but the actual values are undefined.
// Specifying 0 scale means the image is for unscaled image. (unscaled()
// returns truen, and scale() returns 1.0f;)
ImageSkiaRep(const gfx::Size& size, float scale);
// Creates a bitmap with given scale.
// Adds ref to |src|.
ImageSkiaRep(const SkBitmap& src, float scale);
ImageSkiaRep(const ImageSkiaRep& other);
// Get width and height of the image in pixels.
int pixel_width() const { return bitmap_.width(); }
int pixel_height() const { return bitmap_.height(); }
Size pixel_size() const { return gfx::Size(pixel_width(), pixel_height()); }
// Get width and height of the image in DIP.
int GetWidth() const;
int GetHeight() const;
// Retrieves the scale for which this image is a representation of.
float scale() const { return unscaled() ? 1.0f : scale_; }
bool unscaled() const { return scale_ == 0.0f; }
bool is_null() const { return bitmap_.isNull(); }
// Returns the backing bitmap when the image representation is sourced from a
// bitmap.
const SkBitmap& GetBitmap() const;
Size pixel_size_;
SkBitmap bitmap_;
float scale_;
} // namespace gfx