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This is needed to avoid jank when resizing an embedded Android view. See https://github.com/flutter/flutter/issues/19572#issuecomment-410400724
109 lines
3.5 KiB
C++
109 lines
3.5 KiB
C++
// Copyright 2017 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_FLOW_LAYERS_LAYER_BUILDER_H_
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#define FLUTTER_FLOW_LAYERS_LAYER_BUILDER_H_
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#include <memory>
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#include "flutter/flow/layers/layer.h"
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#include "flutter/flow/skia_gpu_object.h"
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#include "flutter/fml/macros.h"
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#include "third_party/skia/include/core/SkBlendMode.h"
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#include "third_party/skia/include/core/SkColor.h"
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#include "third_party/skia/include/core/SkImageFilter.h"
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#include "third_party/skia/include/core/SkMatrix.h"
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#include "third_party/skia/include/core/SkPath.h"
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#include "third_party/skia/include/core/SkPicture.h"
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#include "third_party/skia/include/core/SkRRect.h"
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#include "third_party/skia/include/core/SkRect.h"
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#include "third_party/skia/include/core/SkShader.h"
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namespace flow {
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class LayerBuilder {
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public:
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static std::unique_ptr<LayerBuilder> Create();
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LayerBuilder();
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virtual ~LayerBuilder();
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virtual void PushTransform(const SkMatrix& matrix) = 0;
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virtual void PushClipRect(const SkRect& rect,
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Clip clip_behavior = Clip::antiAlias) = 0;
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virtual void PushClipRoundedRect(const SkRRect& rect,
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Clip clip_behavior = Clip::antiAlias) = 0;
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virtual void PushClipPath(const SkPath& path,
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Clip clip_behavior = Clip::antiAlias) = 0;
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virtual void PushOpacity(int alpha) = 0;
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virtual void PushColorFilter(SkColor color, SkBlendMode blend_mode) = 0;
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virtual void PushBackdropFilter(sk_sp<SkImageFilter> filter) = 0;
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virtual void PushShaderMask(sk_sp<SkShader> shader,
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const SkRect& rect,
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SkBlendMode blend_mode) = 0;
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virtual void PushPhysicalShape(const SkPath& path,
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double elevation,
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SkColor color,
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SkColor shadow_color,
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SkScalar device_pixel_ratio,
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Clip clip_behavior) = 0;
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virtual void PushPerformanceOverlay(uint64_t enabled_options,
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const SkRect& rect) = 0;
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virtual void PushPicture(const SkPoint& offset,
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SkiaGPUObject<SkPicture> picture,
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bool picture_is_complex,
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bool picture_will_change) = 0;
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virtual void PushTexture(const SkPoint& offset,
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const SkSize& size,
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int64_t texture_id,
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bool freeze) = 0;
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#if defined(OS_FUCHSIA)
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virtual void PushChildScene(
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const SkPoint& offset,
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const SkSize& size,
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fml::RefPtr<flow::ExportNodeHolder> export_token_holder,
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bool hit_testable) = 0;
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#endif // defined(OS_FUCHSIA)
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virtual void Pop() = 0;
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virtual std::unique_ptr<flow::Layer> TakeLayer() = 0;
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int GetRasterizerTracingThreshold() const;
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bool GetCheckerboardRasterCacheImages() const;
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bool GetCheckerboardOffscreenLayers() const;
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void SetRasterizerTracingThreshold(uint32_t frameInterval);
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void SetCheckerboardRasterCacheImages(bool checkerboard);
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void SetCheckerboardOffscreenLayers(bool checkerboard);
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private:
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int rasterizer_tracing_threshold_ = 0;
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bool checkerboard_raster_cache_images_ = false;
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bool checkerboard_offscreen_layers_ = false;
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FML_DISALLOW_COPY_AND_ASSIGN(LayerBuilder);
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};
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} // namespace flow
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#endif // FLUTTER_FLOW_LAYERS_LAYER_BUILDER_H_
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