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.CollectionUtils; 28 import com.android.inputmethod.latin.utils.CoordinateUtils; 29 30 import java.util.ArrayList; 31 32 public final class PreviewPlacerView extends RelativeLayout { 33 private final int[] mKeyboardViewOrigin = CoordinateUtils.newInstance(); 34 35 private final ArrayList<AbstractDrawingPreview> mPreviews = CollectionUtils.newArrayList(); 36 37 public PreviewPlacerView(final Context context, final AttributeSet attrs) { 38 super(context, attrs); 39 setWillNotDraw(false); 40 } 41 42 public void setHardwareAcceleratedDrawingEnabled(final boolean enabled) { 43 if (!enabled) return; 44 final Paint layerPaint = new Paint(); 45 layerPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_OVER)); 46 setLayerType(LAYER_TYPE_HARDWARE, layerPaint); 47 } 48 49 public void addPreview(final AbstractDrawingPreview preview) { 50 mPreviews.add(preview); 51 } 52 53 public void setKeyboardViewGeometry(final int[] originCoords, final int width, 54 final int height) { 55 CoordinateUtils.copy(mKeyboardViewOrigin, originCoords); 56 final int count = mPreviews.size(); 57 for (int i = 0; i < count; i++) { 58 mPreviews.get(i).setKeyboardGeometry(originCoords, width, height); 59 } 60 } 61 62 @Override 63 protected void onDetachedFromWindow() { 64 super.onDetachedFromWindow(); 65 final int count = mPreviews.size(); 66 for (int i = 0; i < count; i++) { 67 mPreviews.get(i).onDetachFromWindow(); 68 } 69 } 70 71 @Override 72 public void onDraw(final Canvas canvas) { 73 super.onDraw(canvas); 74 final int originX = CoordinateUtils.x(mKeyboardViewOrigin); 75 final int originY = CoordinateUtils.y(mKeyboardViewOrigin); 76 canvas.translate(originX, originY); 77 final int count = mPreviews.size(); 78 for (int i = 0; i < count; i++) { 79 mPreviews.get(i).drawPreview(canvas); 80 } 81 canvas.translate(-originX, -originY); 82 } 83 } 84
