org.apache.poi.hslf.blip.ImagePainter Maven / Gradle / Ivy
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package org.apache.poi.hslf.blip;
import org.apache.poi.hslf.model.Picture;
import org.apache.poi.hslf.usermodel.PictureData;
import java.awt.*;
/**
* A common interface for objects that can render ppt picture data.
*
* Subclasses can redefine it and use third-party libraries for actual rendering,
* for example, Bitmaps can be rendered using javax.imageio.* , WMF can be rendered using Apache Batik,
* PICT can be rendered using Apple QuickTime API for Java, etc.
*
*
* A typical usage is as follows:
*
* public WMFPaiter implements ImagePainter{
* public void paint(Graphics2D graphics, PictureData pict, Picture parent){
* DataInputStream is = new DataInputStream(new ByteArrayInputStream(pict.getData()));
* org.apache.batik.transcoder.wmf.tosvg.WMFRecordStore wmfStore =
* new org.apache.batik.transcoder.wmf.tosvg.WMFRecordStore();
* try {
* wmfStore.read(is);
* } catch (IOException e){
* return;
* }
*
* Rectangle anchor = parent.getAnchor();
* float scale = (float)anchor.width/wmfStore.getWidthPixels();
*
* org.apache.batik.transcoder.wmf.tosvg.WMFPainter painter =
* new org.apache.batik.transcoder.wmf.tosvg.WMFPainter(wmfStore, 0, 0, scale);
* graphics.translate(anchor.x, anchor.y);
* painter.paint(graphics);
* }
* }
* PictureData.setImagePainter(Picture.WMF, new WMFPaiter());
* ...
*
* Subsequent calls of Slide.draw(Graphics gr) will use WMFPaiter for WMF images.
*
* @author Yegor Kozlov.
*/
public interface ImagePainter {
/**
* Paints the specified picture data
*
* @param graphics the graphics to paintb into
* @param pict the data to paint
* @param parent the shapes that owns the picture data
*/
public void paint(Graphics2D graphics, PictureData pict, Picture parent);
}