/*
* PlotsPanePreviewer.java
*
* Copyright (C) 2009-12 by RStudio, Inc.
*
* Unless you have received this program directly from RStudio pursuant
* to the terms of a commercial license agreement with RStudio, then
* this program is licensed to you under the terms of version 3 of the
* GNU Affero General Public License. This program is distributed WITHOUT
* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
*
*/
package org.rstudio.studio.client.workbench.views.plots.ui.export;
import org.rstudio.core.client.Rectangle;
import org.rstudio.core.client.dom.ElementEx;
import org.rstudio.core.client.dom.IFrameElementEx;
import org.rstudio.core.client.dom.WindowEx;
import org.rstudio.core.client.widget.ImageFrame;
import org.rstudio.studio.client.workbench.exportplot.ExportPlotPreviewer;
import org.rstudio.studio.client.workbench.exportplot.ExportPlotResources;
import org.rstudio.studio.client.workbench.views.plots.model.PlotsServerOperations;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.user.client.ui.Widget;
public class PlotsPanePreviewer implements ExportPlotPreviewer
{
public PlotsPanePreviewer(PlotsServerOperations server)
{
this(server, false);
}
public PlotsPanePreviewer(PlotsServerOperations server,
boolean limitToScreen)
{
server_ = server;
limitToScreen_ = limitToScreen;
}
@Override
public boolean getLimitToScreen()
{
return limitToScreen_;
}
@Override
public Widget getWidget()
{
if (imageFrame_ == null)
{
imageFrame_ = new ImageFrame();
imageFrame_.setUrl("about:blank");
imageFrame_.setSize("100%", "100%");
imageFrame_.setMarginHeight(0);
imageFrame_.setMarginWidth(0);
imageFrame_.setStylePrimaryName(
ExportPlotResources.INSTANCE.styles().imagePreview());
}
return imageFrame_;
}
@Override
public IFrameElementEx getPreviewIFrame()
{
return imageFrame_.getElement().<IFrameElementEx>cast();
}
public Rectangle getPreviewClientRect()
{
WindowEx win = imageFrame_.getElement().<IFrameElementEx>cast()
.getContentWindow();
Document doc = win.getDocument();
NodeList<Element> images = doc.getElementsByTagName("img");
if (images.getLength() > 0)
{
ElementEx img = images.getItem(0).cast();
return new Rectangle(img.getClientLeft(),
img.getClientTop(),
img.getClientWidth(),
img.getClientHeight());
}
else
{
return new Rectangle(0,0,0,0);
}
}
@Override
public void updatePreview(int width, int height)
{
imageFrame_.setImageUrl(server_.getPlotExportUrl("png",
width,
height,
false));
}
private ImageFrame imageFrame_ = null;
protected final PlotsServerOperations server_;
private final boolean limitToScreen_;
}