1 /* 2 * Copyright (C) 2012 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.inputmethod.keyboard.internal; 18 19 import android.content.Context; 20 import android.graphics.Canvas; 21 import android.graphics.Paint; 22 import android.graphics.PorterDuff; 23 import android.graphics.PorterDuffXfermode; 24 import android.util.AttributeSet; 25 import android.widget.RelativeLayout; 26 27 import com.android.inputmethod.latin.utils.CoordinateUtils; 28 29 import java.util.ArrayList; 30 31 public final class DrawingPreviewPlacerView extends RelativeLayout { 32 private final int[] mKeyboardViewOrigin = CoordinateUtils.newInstance(); 33 34 private final ArrayList<AbstractDrawingPreview> mPreviews = new ArrayList<>(); 35 36 public DrawingPreviewPlacerView(final Context context, final AttributeSet attrs) { 37 super(context, attrs); 38 setWillNotDraw(false); 39 } 40 41 public void setHardwareAcceleratedDrawingEnabled(final boolean enabled) { 42 if (!enabled) return; 43 final Paint layerPaint = new Paint(); 44 layerPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_OVER)); 45 setLayerType(LAYER_TYPE_HARDWARE, layerPaint); 46 } 47 48 public void addPreview(final AbstractDrawingPreview preview) { 49 if (mPreviews.indexOf(preview) < 0) { 50 mPreviews.add(preview); 51 } 52 } 53 54 public void setKeyboardViewGeometry(final int[] originCoords, final int width, 55 final int height) { 56 CoordinateUtils.copy(mKeyboardViewOrigin, originCoords); 57 final int count = mPreviews.size(); 58 for (int i = 0; i < count; i++) { 59 mPreviews.get(i).setKeyboardViewGeometry(originCoords, width, height); 60 } 61 } 62 63 public void deallocateMemory() { 64 final int count = mPreviews.size(); 65 for (int i = 0; i < count; i++) { 66 mPreviews.get(i).onDeallocateMemory(); 67 } 68 } 69 70 @Override 71 protected void onDetachedFromWindow() { 72 super.onDetachedFromWindow(); 73 deallocateMemory(); 74 } 75 76 @Override 77 public void onDraw(final Canvas canvas) { 78 super.onDraw(canvas); 79 final int originX = CoordinateUtils.x(mKeyboardViewOrigin); 80 final int originY = CoordinateUtils.y(mKeyboardViewOrigin); 81 canvas.translate(originX, originY); 82 final int count = mPreviews.size(); 83 for (int i = 0; i < count; i++) { 84 mPreviews.get(i).drawPreview(canvas); 85 } 86 canvas.translate(-originX, -originY); 87 } 88 } 89
