| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.view.animation; |
| |
| import android.graphics.Rect; |
| |
| /** |
| * Special case of ClipRectAnimation that animates only the top/bottom |
| * dimensions of the clip, picking up the other dimensions from whatever is |
| * set on the transform already. |
| * |
| * @hide |
| */ |
| public class ClipRectTBAnimation extends ClipRectAnimation { |
| |
| /** |
| * Constructor. Passes in 0 for Left/Right parameters of ClipRectAnimation |
| */ |
| public ClipRectTBAnimation(int fromT, int fromB, int toT, int toB) { |
| super(0, fromT, 0, fromB, 0, toT, 0, toB); |
| } |
| |
| /** |
| * Calculates and sets clip rect on given transformation. It uses existing values |
| * on the Transformation for Left/Right clip parameters. |
| */ |
| @Override |
| protected void applyTransformation(float it, Transformation tr) { |
| Rect oldClipRect = tr.getClipRect(); |
| tr.setClipRect(oldClipRect.left, mFromRect.top + (int) ((mToRect.top - mFromRect.top) * it), |
| oldClipRect.right, |
| mFromRect.bottom + (int) ((mToRect.bottom - mFromRect.bottom) * it)); |
| } |
| |
| } |