mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-11 02:56:06 +00:00
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*-*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef GFX_LAYER_TREE_INVALIDATION_H
|
|
#define GFX_LAYER_TREE_INVALIDATION_H
|
|
|
|
#include "nsRegion.h" // for nsIntRegion
|
|
#include "mozilla/UniquePtr.h" // for UniquePtr
|
|
#include "mozilla/gfx/Point.h"
|
|
|
|
namespace mozilla {
|
|
namespace layers {
|
|
|
|
class Layer;
|
|
class ContainerLayer;
|
|
|
|
/**
|
|
* Callback for ContainerLayer invalidations.
|
|
*
|
|
* @param aContainer ContainerLayer being invalidated.
|
|
* @param aRegion Invalidated region in the ContainerLayer's coordinate
|
|
* space.
|
|
*/
|
|
typedef void (*NotifySubDocInvalidationFunc)(ContainerLayer* aLayer,
|
|
const nsIntRegion& aRegion);
|
|
|
|
/**
|
|
* A set of cached layer properties (including those of child layers),
|
|
* used for comparing differences in layer trees.
|
|
*/
|
|
struct LayerProperties
|
|
{
|
|
virtual ~LayerProperties() {}
|
|
|
|
/**
|
|
* Copies the current layer tree properties into
|
|
* a new LayerProperties object.
|
|
*
|
|
* @param Layer tree to copy, or nullptr if we have no
|
|
* initial layer tree.
|
|
*/
|
|
static UniquePtr<LayerProperties> CloneFrom(Layer* aRoot);
|
|
|
|
/**
|
|
* Clear all invalidation status from this layer tree.
|
|
*/
|
|
static void ClearInvalidations(Layer* aRoot);
|
|
|
|
/**
|
|
* Compares a set of existing layer tree properties to the current layer
|
|
* tree and generates the changed rectangle.
|
|
*
|
|
* @param aRoot Root layer of the layer tree to compare against.
|
|
* @param aCallback If specified, callback to call when ContainerLayers
|
|
* are invalidated.
|
|
* @return Painted area changed by the layer tree changes.
|
|
*/
|
|
virtual nsIntRegion ComputeDifferences(Layer* aRoot,
|
|
NotifySubDocInvalidationFunc aCallback,
|
|
bool* aGeometryChanged = nullptr) = 0;
|
|
|
|
virtual void MoveBy(const gfx::IntPoint& aOffset) = 0;
|
|
};
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|
|
|
|
#endif /* GFX_LAYER_TREE_INVALIDATON_H */
|