chromium/third_party/skia/src/utils/SkCanvasStateUtils.cpp

/*
 * Copyright 2013 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "include/utils/SkCanvasStateUtils.h"

#include "include/core/SkAlphaType.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColorType.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPixmap.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkSize.h"
#include "include/private/base/SkMalloc.h"
#include "src/core/SkDevice.h"
#include "src/core/SkWriter32.h"
#include "src/utils/SkCanvasStack.h"

#include <cstddef>
#include <cstdint>
#include <utility>

/*
 * WARNING: The structs below are part of a stable ABI and as such we explicitly
 * use unambigious primitives (e.g. int32_t instead of an enum).
 *
 * ANY CHANGES TO THE STRUCTS BELOW THAT IMPACT THE ABI SHOULD RESULT IN A NEW
 * NEW SUBCLASS OF SkCanvasState. SUCH CHANGES SHOULD ONLY BE MADE IF ABSOLUTELY
 * NECESSARY!
 *
 * In order to test changes, run the CanvasState tests. gyp/canvas_state_lib.gyp
 * describes how to create a library to pass to the CanvasState tests. The tests
 * should succeed when building the library with your changes and passing that to
 * the tests running in the unchanged Skia.
 */
enum RasterConfigs { … };
RasterConfig;

enum CanvasBackends { … };
CanvasBackend;

struct ClipRect { … };

struct SkMCState { … };

// NOTE: If you add more members, create a new subclass of SkCanvasState with a
// new CanvasState::version.
struct SkCanvasLayerState { … };

class SkCanvasState { … };

class SkCanvasState_v1 : public SkCanvasState { … };

////////////////////////////////////////////////////////////////////////////////

static void setup_MC_state(SkMCState* state, const SkMatrix& matrix, const SkIRect& clip) { … }

SkCanvasState* SkCanvasStateUtils::CaptureCanvasState(SkCanvas* canvas) { … }

////////////////////////////////////////////////////////////////////////////////

static void setup_canvas_from_MC_state(const SkMCState& state, SkCanvas* canvas) { … }

static std::unique_ptr<SkCanvas>
make_canvas_from_canvas_layer(const SkCanvasLayerState& layerState) { … }

std::unique_ptr<SkCanvas> SkCanvasStateUtils::MakeFromCanvasState(const SkCanvasState* state) { … }

////////////////////////////////////////////////////////////////////////////////

void SkCanvasStateUtils::ReleaseCanvasState(SkCanvasState* state) { … }