1 /* 2 * Copyright (C) 2015 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.messaging.ui.mediapicker.camerafocus; 18 19 import android.content.Context; 20 import android.graphics.Canvas; 21 import android.view.MotionEvent; 22 23 public abstract class OverlayRenderer implements RenderOverlay.Renderer { 24 25 private static final String TAG = "CAM OverlayRenderer"; 26 protected RenderOverlay mOverlay; 27 28 protected int mLeft, mTop, mRight, mBottom; 29 30 protected boolean mVisible; 31 setVisible(boolean vis)32 public void setVisible(boolean vis) { 33 mVisible = vis; 34 update(); 35 } 36 isVisible()37 public boolean isVisible() { 38 return mVisible; 39 } 40 41 // default does not handle touch 42 @Override handlesTouch()43 public boolean handlesTouch() { 44 return false; 45 } 46 47 @Override onTouchEvent(MotionEvent evt)48 public boolean onTouchEvent(MotionEvent evt) { 49 return false; 50 } 51 onDraw(Canvas canvas)52 public abstract void onDraw(Canvas canvas); 53 draw(Canvas canvas)54 public void draw(Canvas canvas) { 55 if (mVisible) { 56 onDraw(canvas); 57 } 58 } 59 60 @Override setOverlay(RenderOverlay overlay)61 public void setOverlay(RenderOverlay overlay) { 62 mOverlay = overlay; 63 } 64 65 @Override layout(int left, int top, int right, int bottom)66 public void layout(int left, int top, int right, int bottom) { 67 mLeft = left; 68 mRight = right; 69 mTop = top; 70 mBottom = bottom; 71 } 72 getContext()73 protected Context getContext() { 74 if (mOverlay != null) { 75 return mOverlay.getContext(); 76 } else { 77 return null; 78 } 79 } 80 getWidth()81 public int getWidth() { 82 return mRight - mLeft; 83 } 84 getHeight()85 public int getHeight() { 86 return mBottom - mTop; 87 } 88 update()89 protected void update() { 90 if (mOverlay != null) { 91 mOverlay.update(); 92 } 93 } 94 95 }