| /* |
| * Copyright (C) 2010 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 android.webkit; |
| |
| import android.content.Context; |
| import android.os.Handler; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewConfiguration; |
| import android.view.View.OnClickListener; |
| import android.view.animation.AlphaAnimation; |
| import android.widget.FrameLayout; |
| |
| @Deprecated |
| class ZoomControlExternal implements ZoomControlBase { |
| |
| // The time that the external controls are visible before fading away |
| private static final long ZOOM_CONTROLS_TIMEOUT = |
| ViewConfiguration.getZoomControlsTimeout(); |
| // The view containing the external zoom controls |
| private ExtendedZoomControls mZoomControls; |
| private Runnable mZoomControlRunnable; |
| private final Handler mPrivateHandler = new Handler(); |
| |
| private final WebView mWebView; |
| |
| public ZoomControlExternal(WebView webView) { |
| mWebView = webView; |
| } |
| |
| public void show() { |
| if(mZoomControlRunnable != null) { |
| mPrivateHandler.removeCallbacks(mZoomControlRunnable); |
| } |
| getControls().show(true); |
| mPrivateHandler.postDelayed(mZoomControlRunnable, ZOOM_CONTROLS_TIMEOUT); |
| } |
| |
| public void hide() { |
| if (mZoomControlRunnable != null) { |
| mPrivateHandler.removeCallbacks(mZoomControlRunnable); |
| } |
| if (mZoomControls != null) { |
| mZoomControls.hide(); |
| } |
| } |
| |
| public boolean isVisible() { |
| return mZoomControls != null && mZoomControls.isShown(); |
| } |
| |
| public void update() { } |
| |
| public ExtendedZoomControls getControls() { |
| if (mZoomControls == null) { |
| mZoomControls = createZoomControls(); |
| |
| /* |
| * need to be set to VISIBLE first so that getMeasuredHeight() in |
| * {@link #onSizeChanged()} can return the measured value for proper |
| * layout. |
| */ |
| mZoomControls.setVisibility(View.VISIBLE); |
| mZoomControlRunnable = new Runnable() { |
| public void run() { |
| /* Don't dismiss the controls if the user has |
| * focus on them. Wait and check again later. |
| */ |
| if (!mZoomControls.hasFocus()) { |
| mZoomControls.hide(); |
| } else { |
| mPrivateHandler.removeCallbacks(mZoomControlRunnable); |
| mPrivateHandler.postDelayed(mZoomControlRunnable, |
| ZOOM_CONTROLS_TIMEOUT); |
| } |
| } |
| }; |
| } |
| return mZoomControls; |
| } |
| |
| private ExtendedZoomControls createZoomControls() { |
| ExtendedZoomControls zoomControls = new ExtendedZoomControls(mWebView.getContext()); |
| zoomControls.setOnZoomInClickListener(new OnClickListener() { |
| public void onClick(View v) { |
| // reset time out |
| mPrivateHandler.removeCallbacks(mZoomControlRunnable); |
| mPrivateHandler.postDelayed(mZoomControlRunnable, ZOOM_CONTROLS_TIMEOUT); |
| mWebView.zoomIn(); |
| } |
| }); |
| zoomControls.setOnZoomOutClickListener(new OnClickListener() { |
| public void onClick(View v) { |
| // reset time out |
| mPrivateHandler.removeCallbacks(mZoomControlRunnable); |
| mPrivateHandler.postDelayed(mZoomControlRunnable, ZOOM_CONTROLS_TIMEOUT); |
| mWebView.zoomOut(); |
| } |
| }); |
| return zoomControls; |
| } |
| |
| private static class ExtendedZoomControls extends FrameLayout { |
| |
| private android.widget.ZoomControls mPlusMinusZoomControls; |
| |
| public ExtendedZoomControls(Context context) { |
| super(context, null); |
| LayoutInflater inflater = (LayoutInflater) |
| context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); |
| mPlusMinusZoomControls = (android.widget.ZoomControls) findViewById( |
| com.android.internal.R.id.zoomControls); |
| findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( |
| View.GONE); |
| } |
| |
| public void show(boolean showZoom) { |
| mPlusMinusZoomControls.setVisibility(showZoom ? View.VISIBLE : View.GONE); |
| fade(View.VISIBLE, 0.0f, 1.0f); |
| } |
| |
| public void hide() { |
| fade(View.GONE, 1.0f, 0.0f); |
| } |
| |
| private void fade(int visibility, float startAlpha, float endAlpha) { |
| AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); |
| anim.setDuration(500); |
| startAnimation(anim); |
| setVisibility(visibility); |
| } |
| |
| public boolean hasFocus() { |
| return mPlusMinusZoomControls.hasFocus(); |
| } |
| |
| public void setOnZoomInClickListener(OnClickListener listener) { |
| mPlusMinusZoomControls.setOnZoomInClickListener(listener); |
| } |
| |
| public void setOnZoomOutClickListener(OnClickListener listener) { |
| mPlusMinusZoomControls.setOnZoomOutClickListener(listener); |
| } |
| } |
| } |