mirror of
https://github.com/zhigang1992/react-native.git
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e96f6fa585
Summary: Add directional aware clipping to DrawCommandManager. Currently not attached to FlatViewGroup logic, with the plan to keep this unattached until we are clipping the way we want to in the final state. Reviewed By: ahmedre Differential Revision: D3622253
34 lines
951 B
Java
34 lines
951 B
Java
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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package com.facebook.react.flat;
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/**
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* {@link DrawCommandManager} with vertical clipping (The view scrolls up and down).
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*/
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/* package */ final class VerticalClippingDrawCommandManager extends
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DirectionalClippingDrawCommandManager {
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/* package */ VerticalClippingDrawCommandManager(
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FlatViewGroup flatViewGroup,
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DrawCommand[] drawCommands) {
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super(flatViewGroup, drawCommands);
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}
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@Override
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boolean beforeRect(DrawView drawView) {
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return drawView.mLogicalBottom <= mClippingRect.top;
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}
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@Override
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boolean afterRect(DrawView drawView) {
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return drawView.mLogicalTop >= mClippingRect.bottom;
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}
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}
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