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World Wind is a collection of components that interactively display 3D geographic information within Java applications or applets.
/*
* Copyright (C) 2012 United States Government as represented by the Administrator of the
* National Aeronautics and Space Administration.
* All Rights Reserved.
*/
package gov.nasa.worldwind.util.webview;
import com.jogamp.opengl.util.texture.Texture;
import gov.nasa.worldwind.Configuration;
import gov.nasa.worldwind.avlist.AVList;
import gov.nasa.worldwind.render.*;
import gov.nasa.worldwind.util.Logging;
import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import java.util.*;
import java.util.logging.Level;
/**
* @author dcollins
* @version $Id: MacWebView.java 1171 2013-02-11 21:45:02Z dcollins $
*/
public class MacWebView extends AbstractWebView
{
/** The address of the native WebViewWindow object. Initialized during construction. */
protected long webViewWindowPtr;
public MacWebView(Dimension frameSize)
{
if (frameSize == null)
{
String message = Logging.getMessage("nullValue.SizeIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (!Configuration.isMacOS())
{
String message = Logging.getMessage("NativeLib.UnsupportedOperatingSystem", "Mac WebView",
System.getProperty("os.name"));
Logging.logger().severe(message);
throw new UnsupportedOperationException(message);
}
this.frameSize = frameSize;
this.webViewWindowPtr = MacWebViewJNI.allocWebViewWindow(this.frameSize);
MacWebViewJNI.setPropertyChangeListener(this.webViewWindowPtr, this);
}
public void dispose()
{
if (this.webViewWindowPtr != 0)
{
MacWebViewJNI.releaseWebViewWindow(this.webViewWindowPtr);
this.webViewWindowPtr = 0;
}
}
/** {@inheritDoc} */
public void setHTMLString(String htmlString)
{
if (this.webViewWindowPtr != 0)
{
MacWebViewJNI.setHTMLString(this.webViewWindowPtr, htmlString);
}
}
/** {@inheritDoc} */
public void setHTMLString(String htmlString, URL baseURL)
{
if (this.webViewWindowPtr != 0)
{
MacWebViewJNI.setHTMLStringWithBaseURL(this.webViewWindowPtr, htmlString, baseURL);
}
}
/** {@inheritDoc} */
public void setHTMLString(String htmlString, WebResourceResolver resourceResolver)
{
if (this.webViewWindowPtr != 0)
{
MacWebViewJNI.setHTMLStringWithResourceResolver(this.webViewWindowPtr, htmlString, resourceResolver);
}
}
protected void doSetFrameSize(Dimension size)
{
if (this.webViewWindowPtr != 0)
{
MacWebViewJNI.setFrameSize(this.webViewWindowPtr, size);
}
}
/** {@inheritDoc} */
public Dimension getContentSize()
{
if (this.webViewWindowPtr != 0)
{
return MacWebViewJNI.getContentSize(this.webViewWindowPtr);
}
return null;
}
/** {@inheritDoc} */
public Dimension getMinContentSize()
{
if (this.webViewWindowPtr != 0)
{
return MacWebViewJNI.getMinContentSize(this.webViewWindowPtr);
}
return null;
}
/** {@inheritDoc} */
public void setMinContentSize(Dimension size)
{
if (this.webViewWindowPtr != 0)
{
MacWebViewJNI.setMinContentSize(this.webViewWindowPtr, size);
}
}
/** {@inheritDoc} */
public URL getContentURL()
{
if (this.webViewWindowPtr != 0)
{
return MacWebViewJNI.getContentURL(this.webViewWindowPtr);
}
return null;
}
/** {@inheritDoc} */
public Iterable getLinks()
{
if (this.webViewWindowPtr != 0)
{
AVList[] linkParams = MacWebViewJNI.getLinks(this.webViewWindowPtr);
if (linkParams != null)
return Arrays.asList(linkParams);
}
return Collections.emptyList();
}
/** {@inheritDoc} */
public void sendEvent(InputEvent event)
{
if (this.webViewWindowPtr != 0 && event != null)
{
MacWebViewJNI.sendEvent(this.webViewWindowPtr, event);
}
}
/** {@inheritDoc} */
public void goBack()
{
if (this.webViewWindowPtr != 0)
{
MacWebViewJNI.goBack(this.webViewWindowPtr);
}
}
/** {@inheritDoc} */
public void goForward()
{
if (this.webViewWindowPtr != 0)
{
MacWebViewJNI.goForward(this.webViewWindowPtr);
}
}
/**
* Not implemented. MacWebView generates transparent WebView textures, so setting a background color is not
* necessary. The texture can be drawn over the desired background color.
*/
public void setBackgroundColor(Color color)
{
// Do nothing
}
/**
* Not implemented. MacWebView generates transparent WebView textures, so setting a background color is not
* necessary. The texture can be drawn over the desired background color.
*/
public Color getBackgroundColor()
{
return null;
}
//**********************************************************************//
//******************** Texture Representation ************************//
//**********************************************************************//
@Override
protected WWTexture createTextureRepresentation(DrawContext dc)
{
BasicWWTexture texture = new MacWebViewTexture(this.getFrameSize(), false);
texture.setUseAnisotropy(false); // Do not use anisotropic texture filtering.
return texture;
}
protected class MacWebViewTexture extends WebViewTexture
{
/**
* Indicates whether updating this WebViewTexture's OpenGL texture has failed. When
* true, this WebViewTexture's stops attempting to update its texture. Initially
* false.
*/
protected boolean textureUpdateFailed;
public MacWebViewTexture(Dimension frameSize, boolean useMipMaps)
{
super(frameSize, useMipMaps, true);
}
@Override
protected void updateIfNeeded(DrawContext dc)
{
if (this.textureUpdateFailed)
return;
// Return immediately if the texture isn't in the texture cache, and wait to update until the texture is
// initialized and placed in the cache. This method is called after the texture is bound, so we'll get
// another chance to update as long as the WebView generates repaint events when it changes.
Texture texture = this.getTextureFromCache(dc);
if (texture == null)
return;
try
{
this.displayInTexture(dc, texture);
}
catch (Exception e)
{
// Log an exception indicating that updating the texture failed, but do not re-throw it. This is called
// from within the rendering loop, and we want to avoid causing any other rendering code to fail.
Logging.logger().log(Level.SEVERE, Logging.getMessage("WebView.ExceptionUpdatingTexture"), e);
// Indicate that updating this WebViewTexture's OpenGL texture failed to avoid subsequent attempts.
this.textureUpdateFailed = true;
}
}
@SuppressWarnings({"UnusedParameters"})
protected void displayInTexture(DrawContext dc, Texture texture)
{
// Return immediately if the native WebViewWindow has been released. This indicates the MacWebView has been
// disposed, so there's nothing to do.
long webViewWindowPtr = MacWebView.this.webViewWindowPtr;
if (webViewWindowPtr == 0)
return;
// Load the WebViewWindow's current display pixels into the currently bound OGL texture if the native
// WebView indicates that the display has changed since our last call to displayInTexture.
if (MacWebViewJNI.mustDisplayInTexture(webViewWindowPtr))
{
MacWebViewJNI.displayInTexture(webViewWindowPtr, texture.getTarget());
}
}
}
}