52 lines
1.8 KiB
Java
52 lines
1.8 KiB
Java
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/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.internal.policy;
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import android.graphics.Rect;
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import android.view.animation.ClipRectAnimation;
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import android.view.animation.Transformation;
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/**
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* Special case of ClipRectAnimation that animates only the left/right
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* dimensions of the clip, picking up the other dimensions from whatever is
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* set on the transform already.
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*
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* @hide
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*/
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public class ClipRectLRAnimation extends ClipRectAnimation {
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/**
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* Constructor. Passes in 0 for Top/Bottom parameters of ClipRectAnimation
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*/
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public ClipRectLRAnimation(int fromL, int fromR, int toL, int toR) {
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super(fromL, 0, fromR, 0, toL, 0, toR, 0);
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}
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/**
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* Calculates and sets clip rect on given transformation. It uses existing values
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* on the Transformation for Top/Bottom clip parameters.
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*/
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@Override
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protected void applyTransformation(float it, Transformation tr) {
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Rect oldClipRect = tr.getClipRect();
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tr.setClipRect(mFromRect.left + (int) ((mToRect.left - mFromRect.left) * it),
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oldClipRect.top,
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mFromRect.right + (int) ((mToRect.right - mFromRect.right) * it),
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oldClipRect.bottom);
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}
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}
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