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.MotionEvent; 27 import android.view.View; 28 import com.android.systemui.R; 29 30 /** 31 * A view that can be used for both the dimmed and normal background of an notification. 32 */ 33 public class NotificationBackgroundView extends View { 34 35 private Drawable mBackground; 36 private int mClipTopAmount; 37 private int mActualHeight; 38 NotificationBackgroundView(Context context, AttributeSet attrs)39 public NotificationBackgroundView(Context context, AttributeSet attrs) { 40 super(context, attrs); 41 } 42 43 @Override onDraw(Canvas canvas)44 protected void onDraw(Canvas canvas) { 45 draw(canvas, mBackground); 46 } 47 draw(Canvas canvas, Drawable drawable)48 private void draw(Canvas canvas, Drawable drawable) { 49 if (drawable != null) { 50 drawable.setBounds(0, mClipTopAmount, getWidth(), mActualHeight); 51 drawable.draw(canvas); 52 } 53 } 54 55 @Override verifyDrawable(Drawable who)56 protected boolean verifyDrawable(Drawable who) { 57 return super.verifyDrawable(who) || who == mBackground; 58 } 59 60 @Override drawableStateChanged()61 protected void drawableStateChanged() { 62 drawableStateChanged(mBackground); 63 } 64 drawableStateChanged(Drawable d)65 private void drawableStateChanged(Drawable d) { 66 if (d != null && d.isStateful()) { 67 d.setState(getDrawableState()); 68 } 69 } 70 71 @Override drawableHotspotChanged(float x, float y)72 public void drawableHotspotChanged(float x, float y) { 73 if (mBackground != null) { 74 mBackground.setHotspot(x, y); 75 } 76 } 77 78 /** 79 * Sets a background drawable. As we need to change our bounds independently of layout, we need 80 * the notion of a background independently of the regular View background.. 81 */ setCustomBackground(Drawable background)82 public void setCustomBackground(Drawable background) { 83 if (mBackground != null) { 84 mBackground.setCallback(null); 85 unscheduleDrawable(mBackground); 86 } 87 mBackground = background; 88 if (mBackground != null) { 89 mBackground.setCallback(this); 90 } 91 invalidate(); 92 } 93 setCustomBackground(int drawableResId)94 public void setCustomBackground(int drawableResId) { 95 final Drawable d = mContext.getDrawable(drawableResId); 96 setCustomBackground(d); 97 } 98 setTint(int tintColor)99 public void setTint(int tintColor) { 100 if (tintColor != 0) { 101 mBackground.setColorFilter(tintColor, PorterDuff.Mode.SRC_ATOP); 102 } else { 103 mBackground.clearColorFilter(); 104 } 105 invalidate(); 106 } 107 setActualHeight(int actualHeight)108 public void setActualHeight(int actualHeight) { 109 mActualHeight = actualHeight; 110 invalidate(); 111 } 112 getActualHeight()113 public int getActualHeight() { 114 return mActualHeight; 115 } 116 setClipTopAmount(int clipTopAmount)117 public void setClipTopAmount(int clipTopAmount) { 118 mClipTopAmount = clipTopAmount; 119 invalidate(); 120 } 121 122 @Override hasOverlappingRendering()123 public boolean hasOverlappingRendering() { 124 125 // Prevents this view from creating a layer when alpha is animating. 126 return false; 127 } 128 setState(int[] drawableState)129 public void setState(int[] drawableState) { 130 mBackground.setState(drawableState); 131 } 132 setRippleColor(int color)133 public void setRippleColor(int color) { 134 if (mBackground instanceof RippleDrawable) { 135 RippleDrawable ripple = (RippleDrawable) mBackground; 136 ripple.setColor(ColorStateList.valueOf(color)); 137 } 138 } 139 } 140