| Index: cc/trees/clip_node.h
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| diff --git a/cc/trees/clip_node.h b/cc/trees/clip_node.h
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| new file mode 100644
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| index 0000000000000000000000000000000000000000..289930be06ecab91b627957040e8abdc3c5b2034
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| --- /dev/null
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| +++ b/cc/trees/clip_node.h
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| @@ -0,0 +1,82 @@
|
| +// 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 CC_TREES_CLIP_NODE_H_
|
| +#define CC_TREES_CLIP_NODE_H_
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| +
|
| +#include "cc/base/cc_export.h"
|
| +#include "ui/gfx/geometry/rect_f.h"
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| +
|
| +namespace base {
|
| +namespace trace_event {
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| +class TracedValue;
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| +} // namespace trace_event
|
| +} // namespace base
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| +
|
| +namespace cc {
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| +
|
| +namespace proto {
|
| +class TreeNode;
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| +} // namespace proto
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| +
|
| +struct CC_EXPORT ClipNode {
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| + ClipNode();
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| + ClipNode(const ClipNode& other);
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| +
|
| + int id;
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| + int parent_id;
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| + int owner_id;
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| +
|
| + // The clip rect that this node contributes, expressed in the space of its
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| + // transform node.
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| + gfx::RectF clip;
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| +
|
| + // Clip nodes are uses for two reasons. First, they are used for determining
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| + // which parts of each layer are visible. Second, they are used for
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| + // determining whether a clip needs to be applied when drawing a layer, and if
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| + // so, the rect that needs to be used. These can be different since not all
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| + // clips need to be applied directly to each layer. For example, a layer is
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| + // implicitly clipped by the bounds of its target render surface and by clips
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| + // applied to this surface. |combined_clip_in_target_space| is used for
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| + // computing visible rects, and |clip_in_target_space| is used for computing
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| + // clips applied at draw time. Both rects are expressed in the space of the
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| + // target transform node, and may include clips contributed by ancestors.
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| + gfx::RectF combined_clip_in_target_space;
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| + gfx::RectF clip_in_target_space;
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| +
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| + // The id of the transform node that defines the clip node's local space.
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| + int transform_id;
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| +
|
| + // The id of the transform node that defines the clip node's target space.
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| + int target_id;
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| +
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| + // Whether this node contributes a new clip (that is, whether |clip| needs to
|
| + // be applied), rather than only inheriting ancestor clips.
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| + bool applies_local_clip : 1;
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| +
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| + // When true, |clip_in_target_space| does not include clips from ancestor
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| + // nodes.
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| + bool layer_clipping_uses_only_local_clip : 1;
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| +
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| + // True if target surface needs to be drawn with a clip applied.
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| + bool target_is_clipped : 1;
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| +
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| + // True if layers with this clip tree node need to be drawn with a clip
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| + // applied.
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| + bool layers_are_clipped : 1;
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| + bool layers_are_clipped_when_surfaces_disabled : 1;
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| +
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| + // Nodes that correspond to unclipped surfaces disregard ancestor clips.
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| + bool resets_clip : 1;
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| +
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| + bool operator==(const ClipNode& other) const;
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| +
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| + void ToProtobuf(proto::TreeNode* proto) const;
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| + void FromProtobuf(const proto::TreeNode& proto);
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| + void AsValueInto(base::trace_event::TracedValue* value) const;
|
| +};
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| +
|
| +} // namespace cc
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| +
|
| +#endif // CC_TREES_CLIP_NODE_H_
|
|
|