private static void paintImage(GC gc, Point size) {
gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
gc.fillRectangle(0, 0, size.x, size.y);
gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_LIST_SELECTION));
gc.fillRoundRectangle(0, 0, size.x - 1, size.y - 1, 10, 10);
gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
gc.drawRoundRectangle(0, 0, size.x - 1, size.y - 1, 10, 10);
gc.drawText(gc.getFont().getFontData()[0].toString(), 10, 10, true);
}
public static void main(String[] args) {
final Display display = new Display();
final Image image = new Image(display, 16, 16);
GC gc = new GC(image);
gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
gc.fillRectangle(image.getBounds());
gc.dispose();
final Shell shell = new Shell(display);
shell.setText("Lazy Table");
shell.setLayout(new FillLayout());
final Table table = new Table(shell, SWT.BORDER | SWT.MULTI);
table.setSize(200, 200);
Thread thread =
new Thread() {
@Override
public void run() {
for (int i = 0; i < 20000; i++) {
if (table.isDisposed()) return;
final int[] index = new int[] {i};
display.syncExec(
() -> {
if (table.isDisposed()) return;
TableItem item = new TableItem(table, SWT.NONE);
item.setText("Table Item " + index[0]);
item.setImage(image);
});
}
}
};
thread.start();
shell.setSize(200, 200);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
image.dispose();
display.dispose();
}
private static void paintImage2(GC gc, Point size, int f) {
gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
gc.fillRectangle(0, 0, size.x, size.y);
// Scale line width, corner roundness, and font size.
// Caveat: line width expands in all directions, so the origin also has to move.
gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_LIST_SELECTION));
gc.fillRoundRectangle(f / 2, f / 2, size.x - f, size.y - f, 10 * f, 10 * f);
gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
gc.setLineWidth(f);
gc.drawRoundRectangle(f / 2, f / 2, size.x - f, size.y - f, 10 * f, 10 * f);
FontData fontData = gc.getFont().getFontData()[0];
fontData.setHeight(fontData.getHeight() * f);
Font font = new Font(gc.getDevice(), fontData);
try {
gc.setFont(font);
gc.drawText(fontData.toString(), 10 * f, 10 * f, true);
} finally {
font.dispose();
}
}
