/**
* $Id$
*
* Copyright (c) 1998-2006
* semture GmbH
*
* Alle Rechte vorbehalten
*/
package org.freehep.graphicsio.emf.gdi;
import org.freehep.graphicsio.emf.EMFTag;
import org.freehep.graphicsio.emf.EMFInputStream;
import org.freehep.graphicsio.emf.EMFImageLoader;
import org.freehep.graphicsio.emf.EMFOutputStream;
import org.freehep.graphicsio.emf.EMFRenderer;
import java.io.IOException;
import com.google.code.appengine.awt.image.BufferedImage;
import com.google.code.appengine.awt.TexturePaint;
import com.google.code.appengine.awt.Rectangle;
/**
* @author Steffen Greiffenberg
* @version $Revision$
*/
public class CreateDIBPatternBrushPt extends EMFTag {
private int usage;
private BitmapInfo bmi;
private BufferedImage image;
private int index;
public CreateDIBPatternBrushPt() {
super(94, 1);
}
public EMFTag read(int tagID, EMFInputStream emf, int len)
throws IOException {
CreateDIBPatternBrushPt tag = new CreateDIBPatternBrushPt();
// read the index for storing the GDIObject
tag.index = emf.readDWORD();
// read whatever
/*byte[] bytes =*/ emf.readByte(24);
tag.bmi = new BitmapInfo(emf);
// not used but read:
// DIB_PAL_COLORS A color table is provided and
// consists of an array of 16-bit indexes into the
// logical palette of the device context into which
// the brush is to be selected.
// DIB_RGB_COLORS A color table is provided and
// contains literal RGB values.
tag.usage = emf.readDWORD();
tag.image = EMFImageLoader.readImage(
tag.bmi.getHeader(),
tag.bmi.getHeader().getWidth(),
tag.bmi.getHeader().getHeight(),
emf,
len - 4 - 24 - BitmapInfoHeader.size - 4, null);
return tag;
}
public void write(int tagID, EMFOutputStream emf) throws IOException {
logger.warning("not implemented");
}
public String toString() {
return super.toString() +
"\n usage: " + usage +
"\n" + bmi.toString();
}
/**
* displays the tag using the renderer
*
* @param renderer EMFRenderer storing the drawing session data
*/
public void render(EMFRenderer renderer) {
// The StretchDIBits function copies the color data for a rectangle of pixels in a
// DIB to the specified destination rectangle. If the destination rectangle is larger
// than the source rectangle, this function stretches the rows and columns of color
// data to fit the destination rectangle. If the destination rectangle is smaller
// than the source rectangle, this function compresses the rows and columns by using
// the specified raster operation.
renderer.storeGDIObject(index, new GDIObject() {
public void render(EMFRenderer renderer) {
if (image != null) {
renderer.setBrushPaint(new TexturePaint(image, new Rectangle(0, 0, 16, 16)));
}
}
});
}
}