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57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
// Copyright 2015 The Chromium 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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#include "flutter/flow/layers/clip_path_layer.h"
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#if defined(OS_FUCHSIA)
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#include "apps/mozart/lib/scene/session_helpers.h" // nogncheck
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#endif // defined(OS_FUCHSIA)
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namespace flow {
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ClipPathLayer::ClipPathLayer() = default;
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ClipPathLayer::~ClipPathLayer() = default;
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void ClipPathLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
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SkRect child_paint_bounds = SkRect::MakeEmpty();
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PrerollChildren(context, matrix, &child_paint_bounds);
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if (child_paint_bounds.intersect(clip_path_.getBounds())) {
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set_paint_bounds(child_paint_bounds);
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}
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}
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#if defined(OS_FUCHSIA)
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void ClipPathLayer::UpdateScene(SceneUpdateContext& context) {
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FTL_DCHECK(needs_system_composite());
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// TODO(MZ-140): Must be able to specify paths as shapes to nodes.
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// Treating the shape as a rectangle for now.
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auto bounds = clip_path_.getBounds();
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mozart::client::Rectangle shape(context.session(), // session
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bounds.width(), // width
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bounds.height() // height
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);
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SceneUpdateContext::Clip clip(context, shape, bounds);
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UpdateSceneChildren(context);
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}
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#endif // defined(OS_FUCHSIA)
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void ClipPathLayer::Paint(PaintContext& context) {
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TRACE_EVENT0("flutter", "ClipPathLayer::Paint");
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FTL_DCHECK(needs_painting());
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Layer::AutoSaveLayer save(context, paint_bounds(), nullptr);
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context.canvas.clipPath(clip_path_, true);
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PaintChildren(context);
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}
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} // namespace flow
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