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/*
* Copyright (c) 2005-2006 Laf-Widget Kirill Grouchnikov. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* o Neither the name of Laf-Widget Kirill Grouchnikov nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jvnet.lafwidget.tabbed;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import javax.swing.JTabbedPane;
import org.jvnet.lafwidget.LafWidgetUtilities;
/**
* Default implementation of the tab preview painter. The tab preview is a
* scaled-down (as necessary) thumbnail of the relevant tab.
*
* @author Kirill Grouchnikov
*/
public class DefaultTabPreviewPainter extends TabPreviewPainter {
/* (non-Javadoc)
* @see org.jvnet.lafwidget.tabbed.TabPreviewPainter#hasPreview(javax.swing.JTabbedPane, int)
*/
public boolean hasPreview(JTabbedPane tabPane, int tabIndex) {
return (tabPane.getComponentAt(tabIndex) != null);
}
/* (non-Javadoc)
* @see org.jvnet.lafwidget.tabbed.TabPreviewPainter#previewTab(javax.swing.JTabbedPane, int, java.awt.Graphics, int, int, int, int)
*/
public void previewTab(JTabbedPane tabPane, int tabIndex, Graphics g,
int x, int y, int w, int h) {
Component tabComponent = tabPane.getComponentAt(tabIndex);
if (tabComponent == null)
return;
// if (!tabComponent.isShowing())
// return;
int compWidth = tabComponent.getWidth();
int compHeight = tabComponent.getHeight();
if ((compWidth > 0) && (compHeight > 0)) {
// draw tab component
BufferedImage tempCanvas = new BufferedImage(compWidth, compHeight,
BufferedImage.TYPE_INT_ARGB);
Graphics tempCanvasGraphics = tempCanvas.getGraphics();
tabComponent.paint(tempCanvasGraphics);
// check if need to scale down
double coef = Math.min((double) w / (double) compWidth, (double) h
/ (double) compHeight);
if (coef < 1.0) {
int sdWidth = (int) (coef * compWidth);
int sdHeight = (int) (coef * compHeight);
int dx = (w - sdWidth) / 2;
int dy = (h - sdHeight) / 2;
g.drawImage(LafWidgetUtilities.createThumbnail(tempCanvas,
sdWidth), dx, dy, null);
} else {
// System.out.println("Putting " + frame.hashCode() + "
// -> " + snapshot.hashCode());
g.drawImage(tempCanvas, 0, 0, null);
}
}
}
/* (non-Javadoc)
* @see org.jvnet.lafwidget.tabbed.TabPreviewPainter#hasPreviewWindow(javax.swing.JTabbedPane, int)
*/
public boolean hasPreviewWindow(JTabbedPane tabPane, int tabIndex) {
return true;
}
/* (non-Javadoc)
* @see org.jvnet.lafwidget.tabbed.TabPreviewPainter#hasOverviewDialog(javax.swing.JTabbedPane)
*/
public boolean hasOverviewDialog(JTabbedPane tabPane) {
return true;
}
}
