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/*
* 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);
}
}
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