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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.statusbar;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.View;
/**
* A view that can be used for both the dimmed and normal background of an notification.
*/
public class NotificationBackgroundView extends View {
private Drawable mBackground;
private int mClipTopAmount;
private int mActualHeight;
public NotificationBackgroundView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onDraw(Canvas canvas) {
draw(canvas, mBackground);
}
private void draw(Canvas canvas, Drawable drawable) {
if (drawable != null) {
drawable.setBounds(0, mClipTopAmount, getWidth(), mActualHeight);
drawable.draw(canvas);
}
}
@Override
protected boolean verifyDrawable(Drawable who) {
return super.verifyDrawable(who) || who == mBackground;
}
@Override
protected void drawableStateChanged() {
drawableStateChanged(mBackground);
}
private void drawableStateChanged(Drawable d) {
if (d != null && d.isStateful()) {
d.setState(getDrawableState());
}
}
/**
* Sets a background drawable. As we need to change our bounds independently of layout, we need
* the notion of a background independently of the regular View background..
*/
public void setCustomBackground(Drawable background) {
if (mBackground != null) {
mBackground.setCallback(null);
unscheduleDrawable(mBackground);
}
mBackground = background;
if (mBackground != null) {
mBackground.setCallback(this);
}
invalidate();
}
public void setCustomBackground(int drawableResId, int tintColor) {
final Drawable d = getResources().getDrawable(drawableResId);
if (tintColor != 0) {
d.setColorFilter(tintColor, PorterDuff.Mode.SRC_ATOP);
}
setCustomBackground(d);
}
public void setActualHeight(int actualHeight) {
mActualHeight = actualHeight;
invalidate();
}
public int getActualHeight() {
return mActualHeight;
}
public void setClipTopAmount(int clipTopAmount) {
mClipTopAmount = clipTopAmount;
invalidate();
}
@Override
public boolean hasOverlappingRendering() {
// Prevents this view from creating a layer when alpha is animating.
return false;
}
}
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