[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
[
List Home]
|
Re: [udig-devel] Draw RenderedImage
|
Hello and happy new year to all
Le 4 janv. 06 à 11:32, Iñigo Telleria Elola a écrit :
I want to draw an RenderedImage (obtained from udig's map) in a SWT
shell. I have tried differents possibilties:
1) with GC, but this object doesn't have any method to draw
RenderedImage (only Image).
2) with SWTGraphics, It doesn't work.
3) with Graphics2D, I don't know how to use.
anybody has an idea how I can achieve?
Thanks in advance
_______________________________________________
User-friendly Desktop Internet GIS (uDig)
http://udig.refractions.net
http://lists.refractions.net/mailman/listinfo/udig-devel
here some (very partial)code i am using into an SWT Canvas :
public class ImageCanvas extends Canvas implements MouseListener,
MouseMoveListener{
private Composite parent;
private Shell dialog;
private PaintEvent curevent=null;
private Listener resizeListener=null;
private PaintListener paintListener=null;
private Dimension displaySize = new Dimension(20, 20);
private Rectangle curclientArea;
private RenderedImage imageToDraw=null;
public ImageCanvas(Shell dialog, Composite parent)
{
this(dialog,parent,0);
}
public ImageCanvas(Shell dialog, Composite parent, int style ) {
super(parent, style);
try{
resizeListener = new Listener(){
public void handleEvent( Event event ) {
Point size = getSize();
displaySize = new Dimension(Math.min(size.x,
size.y),Math.min(size.x, size.y)); // i want a square)
}
};
addListener(SWT.Resize, resizeListener);
this.parent=parent;
this.dialog=dialog;
paintListener = new PaintListener()
{
public void paintControl(PaintEvent event)
{
curevent=event;
curclientArea = getClientArea();
onPaint(event);
}
};
addPaintListener(paintListener);
}catch(Exception e)
{
e.printStackTrace();
}
}
public Dimension getDisplaySize() {
return displaySize;
}
public void setDisplaySize(int width,int height) {
displaySize = new Dimension(width, height);
dialog.redraw();
dialog.update();
}
/**
* @see net.refractions.udig.project.render.MapDisplay#getWidth()
*/
public int getWidth() {
return getDisplaySize().width;
}
/**
* @see net.refractions.udig.project.render.MapDisplay#getHeight()
*/
public int getHeight() {
return getDisplaySize().height;
}
protected void onPaint(final PaintEvent event)
{
final Display display = event.display;
final GC gc = event.gc;
final Rectangle rect = curclientArea;
if (rect.width == 0 || rect.height == 0) return;
final SWTGraphics swtGraphics = new SWTGraphics(gc, display,
getDisplaySize());
if (imageToDraw != null)
{
swtGraphics.drawImage(imageToDraw, 0, 0, getWidth(),
getHeight(), 0, 0, param.cols, param.filas);
}
swtGraphics.dispose();
/*
*/
System.out.println("onPaint done");
}
hope this help !
Jacques Divol
Ingénieur de Recherche temp Unité Espace-IRD
@mail :jacques.divol@xxxxxxxxxxxxxxxx
