private void paint(PaintEvent event) {
GC gc = event.gc;
gc.setAntialias(SWT.ON);
gc.setLineWidth(1);
Rectangle rect = getClientArea();
gc.setClipping(rect);
gc.setForeground(getForeground());
gc.setBackground(getForeground());
Color[] palette = new Color[32];
for (int i = 0; i < palette.length; i++) {
float hue = 270.0f * i / (palette.length - 1);
palette[palette.length - 1 - i] = new Color(Display.getDefault(), new RGB(hue, 1.0f, 1.0f));
// gc.setBackground(palette[i]);
// gc.fillRectangle(rect.x + i*rect.width/palette.length, rect.y, rect.width/palette.length,
// 100);
}
frame.adjust();
int x = (int) (rect.x - frame.offsetX);
int y = (int) (rect.y - frame.offsetY);
int extent = (int) (Math.min(rect.width, rect.height) * frame.scale);
treeMap.paint(x, y, extent, gc, curve, palette);
for (Color color : palette) color.dispose();
gc.setAlpha(255);
gc.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_WHITE));
gc.setLineStyle(SWT.LINE_DASHDOT);
gc.setLineWidth(1);
gc.drawRectangle(x - 1, y - 1, extent + 2, extent + 2);
if (selection.size() > 0) {
gc.setLineStyle(SWT.LINE_SOLID);
gc.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_LIST_SELECTION));
for (TreeMap subtree : selection) {
gc.drawRectangle(getItemBounds(subtree));
}
}
}
public void restoreState(IMemento memento) {
frame.offsetX = memento.getFloat("frameOffsetX");
frame.offsetY = memento.getFloat("frameOffsetY");
frame.scale = memento.getFloat("frameScale");
}