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// Copyright 2017 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.
#include "cc/trees/clip_expander.h"
#include "cc/trees/effect_node.h"
#include "cc/trees/property_tree.h"
#include "ui/gfx/transform.h"
namespace cc {
ClipExpander::ClipExpander(int filter_effect_id)
: target_effect_id_(filter_effect_id) {}
ClipExpander::ClipExpander(const ClipExpander& other) = default;
bool ClipExpander::operator==(const ClipExpander& other) const {
return target_effect_id_ == other.target_effect_id_;
}
gfx::Rect ClipExpander::MapRect(const gfx::Rect& rect,
const PropertyTrees* property_trees) const {
const EffectNode* effect_node =
property_trees->effect_tree.Node(target_effect_id_);
gfx::Transform filter_draw_transform;
filter_draw_transform.Scale(effect_node->surface_contents_scale.x(),
effect_node->surface_contents_scale.y());
return effect_node->filters.MapRect(rect, filter_draw_transform.matrix());
}
gfx::Rect ClipExpander::MapRectReverse(
const gfx::Rect& rect,
const PropertyTrees* property_trees) const {
const EffectNode* effect_node =
property_trees->effect_tree.Node(target_effect_id_);
gfx::Transform filter_draw_transform;
filter_draw_transform.Scale(effect_node->surface_contents_scale.x(),
effect_node->surface_contents_scale.y());
return effect_node->filters.MapRectReverse(rect,
filter_draw_transform.matrix());
}
} // namespace cc
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