chromium/third_party/skia/src/text/gpu/TextBlobRedrawCoordinator.h

/*
 * Copyright 2015 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef sktext_gpu_TextBlobRedrawCoordinator_DEFINED
#define sktext_gpu_TextBlobRedrawCoordinator_DEFINED

#include "include/core/SkRefCnt.h"
#include "include/private/base/SkTArray.h"
#include "include/private/base/SkThreadAnnotations.h"
#include "src/base/SkSpinlock.h"
#include "src/base/SkTInternalLList.h"
#include "src/core/SkMessageBus.h"
#include "src/core/SkTHash.h"
#include "src/text/gpu/SubRunContainer.h"
#include "src/text/gpu/TextBlob.h"

#include <cstddef>
#include <cstdint>

class GrTextBlobTestingPeer;
class SkCanvas;
class SkMatrix;
class SkPaint;
struct SkStrikeDeviceInfo;

namespace sktext { class GlyphRunList; }

namespace sktext::gpu {

// TextBlobRedrawCoordinator reuses data from previous drawing operations using multiple criteria
// to pick the best data for the draw. In addition, it provides a central service for managing
// resource usage through a messageBus.
// The draw data is stored in a three-tiered system. The first tier is keyed by the SkTextBlob's
// uniqueID. The second tier uses the sktext::gpu::TextBlob's key to get a general match for the
// draw. The last tier queries each sub run using canReuse to determine if each sub run can handle
// the drawing parameters.
class TextBlobRedrawCoordinator { … };

}  // namespace sktext::gpu

#endif  // sktext_gpu_TextBlobRedrawCoordinator_DEFINED