/**
* Should be called when SVG document has been changed. It will be re-rendered and figure will be
* repainted.
*/
public void contentChanged() {
getDocument();
if (transcoder != null) {
transcoder.contentChanged();
}
repaint();
}
public void setAreaOfInterest(Rectangle2D value) {
getDocument();
if (transcoder != null) {
transcoder.setCanvasAreaOfInterest(value);
}
repaint();
}
protected final Document getDocument() {
if (failedToLoadDocument) {
return null;
}
if (transcoder == null) {
loadDocument();
}
return transcoder == null ? null : transcoder.getDocument();
}
@Override
protected void paintFigure(Graphics graphics) {
super.paintFigure(graphics);
Document document = getDocument();
if (document == null) {
return;
}
Image image = null;
try {
Rectangle r = getClientArea();
transcoder.setCanvasSize(
specifyCanvasWidth ? r.width : -1, specifyCanvasHeight ? r.height : -1);
updateRenderingHints(graphics);
BufferedImage awtImage = transcoder.getBufferedImage();
if (awtImage != null) {
image = toSWT(Display.getCurrent(), awtImage);
graphics.drawImage(image, r.x, r.y);
}
} finally {
if (image != null) {
image.dispose();
}
}
}
/** Reads color value from the document. */
protected Color getColor(Element element, String attributeName) {
if (getDocument() == null || getDocument() != element.getOwnerDocument()) {
return null;
}
Color color = null;
// Make sure that CSSEngine is available.
BridgeContext ctx = transcoder.initCSSEngine();
try {
color = SVGUtils.toSWTColor(element, attributeName);
} finally {
if (ctx != null) {
ctx.dispose();
}
}
return color;
}
private void updateRenderingHints(Graphics graphics) {
{
int aa = SWT.DEFAULT;
try {
aa = graphics.getAntialias();
} catch (Exception e) {
// not supported
}
Object aaHint;
if (aa == SWT.ON) {
aaHint = RenderingHints.VALUE_ANTIALIAS_ON;
} else if (aa == SWT.OFF) {
aaHint = RenderingHints.VALUE_ANTIALIAS_OFF;
} else {
aaHint = RenderingHints.VALUE_ANTIALIAS_DEFAULT;
}
if (transcoder.getRenderingHints().get(RenderingHints.KEY_ANTIALIASING) != aaHint) {
transcoder.getRenderingHints().put(RenderingHints.KEY_ANTIALIASING, aaHint);
transcoder.contentChanged();
}
}
{
int aa = SWT.DEFAULT;
try {
aa = graphics.getTextAntialias();
} catch (Exception e) {
// not supported
}
Object aaHint;
if (aa == SWT.ON) {
aaHint = RenderingHints.VALUE_TEXT_ANTIALIAS_ON;
} else if (aa == SWT.OFF) {
aaHint = RenderingHints.VALUE_TEXT_ANTIALIAS_OFF;
} else {
aaHint = RenderingHints.VALUE_TEXT_ANTIALIAS_DEFAULT;
}
if (transcoder.getRenderingHints().get(RenderingHints.KEY_TEXT_ANTIALIASING) != aaHint) {
transcoder.getRenderingHints().put(RenderingHints.KEY_TEXT_ANTIALIASING, aaHint);
transcoder.contentChanged();
}
}
}
public final Rectangle2D getAreaOfInterest() {
getDocument();
return transcoder == null ? null : transcoder.getCanvasAreaOfInterest();
}
){kind=link}
