1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package com.android.systemui.statusbar; 18 19 import android.content.Context; 20 import android.content.res.ColorStateList; 21 import android.graphics.Canvas; 22 import android.graphics.PorterDuff; 23 import android.graphics.drawable.Drawable; 24 import android.graphics.drawable.RippleDrawable; 25 import android.util.AttributeSet; 26 import android.view.View; 27 28 /** 29 * A view that can be used for both the dimmed and normal background of an notification. 30 */ 31 public class NotificationBackgroundView extends View { 32 33 private Drawable mBackground; 34 private int mClipTopAmount; 35 private int mActualHeight; 36 NotificationBackgroundView(Context context, AttributeSet attrs)37 public NotificationBackgroundView(Context context, AttributeSet attrs) { 38 super(context, attrs); 39 } 40 41 @Override onDraw(Canvas canvas)42 protected void onDraw(Canvas canvas) { 43 draw(canvas, mBackground); 44 } 45 draw(Canvas canvas, Drawable drawable)46 private void draw(Canvas canvas, Drawable drawable) { 47 if (drawable != null && mActualHeight > mClipTopAmount) { 48 drawable.setBounds(0, mClipTopAmount, getWidth(), mActualHeight); 49 drawable.draw(canvas); 50 } 51 } 52 53 @Override verifyDrawable(Drawable who)54 protected boolean verifyDrawable(Drawable who) { 55 return super.verifyDrawable(who) || who == mBackground; 56 } 57 58 @Override drawableStateChanged()59 protected void drawableStateChanged() { 60 drawableStateChanged(mBackground); 61 } 62 drawableStateChanged(Drawable d)63 private void drawableStateChanged(Drawable d) { 64 if (d != null && d.isStateful()) { 65 d.setState(getDrawableState()); 66 } 67 } 68 69 @Override drawableHotspotChanged(float x, float y)70 public void drawableHotspotChanged(float x, float y) { 71 if (mBackground != null) { 72 mBackground.setHotspot(x, y); 73 } 74 } 75 76 /** 77 * Sets a background drawable. As we need to change our bounds independently of layout, we need 78 * the notion of a background independently of the regular View background.. 79 */ setCustomBackground(Drawable background)80 public void setCustomBackground(Drawable background) { 81 if (mBackground != null) { 82 mBackground.setCallback(null); 83 unscheduleDrawable(mBackground); 84 } 85 mBackground = background; 86 if (mBackground != null) { 87 mBackground.setCallback(this); 88 } 89 if (mBackground instanceof RippleDrawable) { 90 ((RippleDrawable) mBackground).setForceSoftware(true); 91 } 92 invalidate(); 93 } 94 setCustomBackground(int drawableResId)95 public void setCustomBackground(int drawableResId) { 96 final Drawable d = mContext.getDrawable(drawableResId); 97 setCustomBackground(d); 98 } 99 setTint(int tintColor)100 public void setTint(int tintColor) { 101 if (tintColor != 0) { 102 mBackground.setColorFilter(tintColor, PorterDuff.Mode.SRC_ATOP); 103 } else { 104 mBackground.clearColorFilter(); 105 } 106 invalidate(); 107 } 108 setActualHeight(int actualHeight)109 public void setActualHeight(int actualHeight) { 110 mActualHeight = actualHeight; 111 invalidate(); 112 } 113 getActualHeight()114 public int getActualHeight() { 115 return mActualHeight; 116 } 117 setClipTopAmount(int clipTopAmount)118 public void setClipTopAmount(int clipTopAmount) { 119 mClipTopAmount = clipTopAmount; 120 invalidate(); 121 } 122 123 @Override hasOverlappingRendering()124 public boolean hasOverlappingRendering() { 125 126 // Prevents this view from creating a layer when alpha is animating. 127 return false; 128 } 129 setState(int[] drawableState)130 public void setState(int[] drawableState) { 131 mBackground.setState(drawableState); 132 } 133 setRippleColor(int color)134 public void setRippleColor(int color) { 135 if (mBackground instanceof RippleDrawable) { 136 RippleDrawable ripple = (RippleDrawable) mBackground; 137 ripple.setColor(ColorStateList.valueOf(color)); 138 } 139 } 140 } 141