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// Copyright 2016 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.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_OBJECT_PAINT_INVALIDATOR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_OBJECT_PAINT_INVALIDATOR_H_
#include "base/auto_reset.h"
#include "base/macros.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/graphics/paint_invalidation_reason.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
class DisplayItemClient;
class LayoutObject;
struct PaintInvalidatorContext;
class CORE_EXPORT ObjectPaintInvalidator {
STACK_ALLOCATED();
public:
ObjectPaintInvalidator(const LayoutObject& object) : object_(object) {}
// This calls LayoutObject::PaintingLayer() which walks up the tree.
// If possible, use the faster
// PaintInvalidatorContext.painting_layer.SetNeedsRepaint() instead.
void SlowSetPaintingLayerNeedsRepaint();
void SlowSetPaintingLayerNeedsRepaintAndInvalidateDisplayItemClient(
const DisplayItemClient& client,
PaintInvalidationReason reason) {
SlowSetPaintingLayerNeedsRepaint();
InvalidateDisplayItemClient(client, reason);
}
void InvalidateDisplayItemClientsIncludingNonCompositingDescendants(
PaintInvalidationReason);
// The caller should ensure the painting layer has been SetNeedsRepaint
// before calling this function.
void InvalidateDisplayItemClient(const DisplayItemClient&,
PaintInvalidationReason);
void InvalidatePaintIncludingNonCompositingDescendants();
void InvalidatePaintIncludingNonSelfPaintingLayerDescendants();
protected:
const LayoutObject& object_;
};
class ObjectPaintInvalidatorWithContext : public ObjectPaintInvalidator {
public:
ObjectPaintInvalidatorWithContext(const LayoutObject& object,
const PaintInvalidatorContext& context)
: ObjectPaintInvalidator(object), context_(context) {}
void InvalidatePaint() {
InvalidatePaintWithComputedReason(ComputePaintInvalidationReason());
}
PaintInvalidationReason ComputePaintInvalidationReason();
void InvalidatePaintWithComputedReason(PaintInvalidationReason);
private:
PaintInvalidationReason InvalidateSelection(PaintInvalidationReason);
PaintInvalidationReason InvalidatePartialRect(PaintInvalidationReason);
const PaintInvalidatorContext& context_;
};
} // namespace blink
#endif