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.graphics.Outline; 21 import android.graphics.Rect; 22 import android.graphics.RectF; 23 import android.util.AttributeSet; 24 import android.view.View; 25 import android.view.ViewOutlineProvider; 26 27 import com.android.systemui.R; 28 29 /** 30 * Like {@link ExpandableView}, but setting an outline for the height and clipping. 31 */ 32 public abstract class ExpandableOutlineView extends ExpandableView { 33 34 private final Rect mOutlineRect = new Rect(); 35 protected final int mRoundedRectCornerRadius; 36 private boolean mCustomOutline; 37 private float mOutlineAlpha = 1f; 38 ExpandableOutlineView(Context context, AttributeSet attrs)39 public ExpandableOutlineView(Context context, AttributeSet attrs) { 40 super(context, attrs); 41 mRoundedRectCornerRadius = getResources().getDimensionPixelSize( 42 R.dimen.notification_material_rounded_rect_radius); 43 setOutlineProvider(new ViewOutlineProvider() { 44 @Override 45 public void getOutline(View view, Outline outline) { 46 if (!mCustomOutline) { 47 outline.setRect(0, 48 mClipTopAmount, 49 getWidth(), 50 Math.max(getActualHeight(), mClipTopAmount)); 51 } else { 52 outline.setRoundRect(mOutlineRect, mRoundedRectCornerRadius); 53 } 54 outline.setAlpha(mOutlineAlpha); 55 } 56 }); 57 } 58 59 @Override setActualHeight(int actualHeight, boolean notifyListeners)60 public void setActualHeight(int actualHeight, boolean notifyListeners) { 61 super.setActualHeight(actualHeight, notifyListeners); 62 invalidateOutline(); 63 } 64 65 @Override setClipTopAmount(int clipTopAmount)66 public void setClipTopAmount(int clipTopAmount) { 67 super.setClipTopAmount(clipTopAmount); 68 invalidateOutline(); 69 } 70 setOutlineAlpha(float alpha)71 protected void setOutlineAlpha(float alpha) { 72 mOutlineAlpha = alpha; 73 invalidateOutline(); 74 } 75 setOutlineRect(RectF rect)76 protected void setOutlineRect(RectF rect) { 77 if (rect != null) { 78 setOutlineRect(rect.left, rect.top, rect.right, rect.bottom); 79 } else { 80 mCustomOutline = false; 81 setClipToOutline(false); 82 invalidateOutline(); 83 } 84 } 85 setOutlineRect(float left, float top, float right, float bottom)86 protected void setOutlineRect(float left, float top, float right, float bottom) { 87 mCustomOutline = true; 88 setClipToOutline(true); 89 90 mOutlineRect.set((int) left, (int) top, (int) right, (int) bottom); 91 92 // Outlines need to be at least 1 dp 93 mOutlineRect.bottom = (int) Math.max(top, mOutlineRect.bottom); 94 mOutlineRect.right = (int) Math.max(left, mOutlineRect.right); 95 96 invalidateOutline(); 97 } 98 99 } 100