| /* |
| * 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.ViewDebug; |
| import android.view.ViewOutlineProvider; |
| |
| import com.android.systemui.recents.misc.Utilities; |
| |
| /* An outline provider that has a clip and outline that can be animated. */ |
| public class AnimateableViewBounds extends ViewOutlineProvider { |
| |
| private static final float MIN_ALPHA = 0.1f; |
| private static final float MAX_ALPHA = 0.8f; |
| |
| View mSourceView; |
| @ViewDebug.ExportedProperty(category="recents") |
| Rect mClipRect = new Rect(); |
| @ViewDebug.ExportedProperty(category="recents") |
| Rect mClipBounds = new Rect(); |
| @ViewDebug.ExportedProperty(category="recents") |
| Rect mLastClipBounds = new Rect(); |
| @ViewDebug.ExportedProperty(category="recents") |
| int mCornerRadius; |
| @ViewDebug.ExportedProperty(category="recents") |
| float mAlpha = 1f; |
| |
| public AnimateableViewBounds(View source, int cornerRadius) { |
| mSourceView = source; |
| mCornerRadius = cornerRadius; |
| } |
| |
| /** |
| * Resets the right and bottom clip for this view. |
| */ |
| public void reset() { |
| mClipRect.set(-1, -1, -1, -1); |
| updateClipBounds(); |
| } |
| |
| @Override |
| public void getOutline(View view, Outline outline) { |
| outline.setAlpha(Utilities.mapRange(mAlpha, MIN_ALPHA, MAX_ALPHA)); |
| if (mCornerRadius > 0) { |
| outline.setRoundRect(mClipRect.left, mClipRect.top, |
| mSourceView.getWidth() - mClipRect.right, |
| mSourceView.getHeight() - mClipRect.bottom, |
| mCornerRadius); |
| } else { |
| outline.setRect(mClipRect.left, mClipRect.top, |
| mSourceView.getWidth() - mClipRect.right, |
| mSourceView.getHeight() - mClipRect.bottom); |
| } |
| } |
| |
| /** |
| * Sets the view outline alpha. |
| */ |
| void setAlpha(float alpha) { |
| if (Float.compare(alpha, mAlpha) != 0) { |
| mAlpha = alpha; |
| // TODO, If both clip and alpha change in the same frame, only invalidate once |
| mSourceView.invalidateOutline(); |
| } |
| } |
| |
| /** |
| * @return the outline alpha. |
| */ |
| public float getAlpha() { |
| return mAlpha; |
| } |
| |
| /** Sets the top clip. */ |
| public void setClipTop(int top) { |
| mClipRect.top = top; |
| updateClipBounds(); |
| } |
| |
| /** Returns the top clip. */ |
| public int getClipTop() { |
| return mClipRect.top; |
| } |
| |
| /** Sets the bottom clip. */ |
| public void setClipBottom(int bottom) { |
| mClipRect.bottom = bottom; |
| updateClipBounds(); |
| } |
| |
| /** Returns the bottom clip. */ |
| public int getClipBottom() { |
| return mClipRect.bottom; |
| } |
| |
| private void updateClipBounds() { |
| mClipBounds.set(Math.max(0, mClipRect.left), Math.max(0, mClipRect.top), |
| mSourceView.getWidth() - Math.max(0, mClipRect.right), |
| mSourceView.getHeight() - Math.max(0, mClipRect.bottom)); |
| if (!mLastClipBounds.equals(mClipBounds)) { |
| mSourceView.setClipBounds(mClipBounds); |
| // TODO, If both clip and alpha change in the same frame, only invalidate once |
| mSourceView.invalidateOutline(); |
| mLastClipBounds.set(mClipBounds); |
| } |
| } |
| } |