| /* |
| * Copyright (C) 2014 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 com.android.systemui.recents.views; |
| |
| import android.graphics.Outline; |
| import android.graphics.Rect; |
| import android.view.View; |
| import android.view.ViewOutlineProvider; |
| import com.android.systemui.recents.RecentsConfiguration; |
| |
| /* An outline provider that has a clip and outline that can be animated. */ |
| public class AnimateableViewBounds extends ViewOutlineProvider { |
| |
| RecentsConfiguration mConfig; |
| |
| TaskView mSourceView; |
| Rect mClipRect = new Rect(); |
| Rect mClipBounds = new Rect(); |
| int mCornerRadius; |
| float mAlpha = 1f; |
| final float mMinAlpha = 0.25f; |
| |
| public AnimateableViewBounds(TaskView source, int cornerRadius) { |
| mConfig = RecentsConfiguration.getInstance(); |
| mSourceView = source; |
| mCornerRadius = cornerRadius; |
| setClipBottom(getClipBottom()); |
| } |
| |
| @Override |
| public void getOutline(View view, Outline outline) { |
| outline.setAlpha(mMinAlpha + mAlpha / (1f - mMinAlpha)); |
| outline.setRoundRect(mClipRect.left, mClipRect.top, |
| mSourceView.getWidth() - mClipRect.right, |
| mSourceView.getHeight() - mClipRect.bottom, |
| mCornerRadius); |
| } |
| |
| /** Sets the view outline alpha. */ |
| void setAlpha(float alpha) { |
| if (Float.compare(alpha, mAlpha) != 0) { |
| mAlpha = alpha; |
| mSourceView.invalidateOutline(); |
| } |
| } |
| |
| /** Sets the bottom clip. */ |
| public void setClipBottom(int bottom) { |
| if (bottom != mClipRect.bottom) { |
| mClipRect.bottom = bottom; |
| mSourceView.invalidateOutline(); |
| updateClipBounds(); |
| if (!mConfig.useHardwareLayers) { |
| mSourceView.mThumbnailView.updateThumbnailVisibility( |
| bottom - mSourceView.getPaddingBottom()); |
| } |
| } |
| } |
| |
| /** Returns the bottom clip. */ |
| public int getClipBottom() { |
| return mClipRect.bottom; |
| } |
| |
| private void updateClipBounds() { |
| mClipBounds.set(mClipRect.left, mClipRect.top, |
| mSourceView.getWidth() - mClipRect.right, |
| mSourceView.getHeight() - mClipRect.bottom); |
| mSourceView.setClipBounds(mClipBounds); |
| } |
| } |