| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| package com.android.browser; |
| |
| import android.content.Context; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Picture; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.webkit.WebView; |
| import android.widget.ImageView; |
| |
| import android.util.Log; |
| |
| /** |
| * This class is used by ImageAdapter to draw a representation of each tab. It |
| * overrides ImageView so it can be used for the new tab image as well. |
| */ |
| public class FakeWebView extends ImageView { |
| private TabControl.Tab mTab; |
| private boolean mUsesResource; |
| |
| private class Listener implements WebView.PictureListener { |
| public void onNewPicture(WebView view, Picture p) { |
| FakeWebView.this.invalidate(); |
| } |
| }; |
| |
| public FakeWebView(Context context) { |
| this(context, null); |
| } |
| |
| public FakeWebView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public FakeWebView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| if (mUsesResource) { |
| super.onDraw(canvas); |
| } else { |
| // Always draw white behind the picture just in case the picture |
| // draws nothing. |
| // FIXME: We used to draw white only when the WebView was null but |
| // sometimes the picture was empty. So now we always draw white. It |
| // would be nice to know if the picture is empty so we can avoid |
| // drawing white. |
| canvas.drawColor(Color.WHITE); |
| if (mTab != null) { |
| final WebView w = mTab.getTopWindow(); |
| if (w != null) { |
| Picture p = w.capturePicture(); |
| canvas.save(); |
| float scale = getWidth() * w.getScale() / w.getWidth(); |
| canvas.scale(scale, scale); |
| canvas.translate(-w.getScrollX(), -w.getScrollY()); |
| canvas.drawPicture(p); |
| canvas.restore(); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void setImageResource(int resId) { |
| mUsesResource = true; |
| mTab = null; |
| super.setImageResource(resId); |
| } |
| |
| /** |
| * Set a WebView for this FakeWebView to represent. |
| * @param v WebView whose picture and other data will be used in onDraw. |
| */ |
| public void setTab(TabControl.Tab t) { |
| mUsesResource = false; |
| mTab = t; |
| if (t != null && t.getWebView() != null) { |
| Listener l = new Listener(); |
| t.getWebView().setPictureListener(l); |
| if (t.getSubWebView() != null) { |
| t.getSubWebView().setPictureListener(l); |
| } |
| } |
| } |
| } |