Examples with SetWidgetPointsAction org.csstudio.display.builder.editor.undo.SetWidgetPointsAction used on opensource projects

Example 1 with SetWidgetPointsAction

use of org.csstudio.display.builder.editor.undo.SetWidgetPointsAction in project org.csstudio.display.builder by kasemir.

the class PointsBinding method pointsChanged.

// PointsEditorListener
@Override
public void pointsChanged(final Points screen_points) {
    // Update widget with edited points
    final Points points = screen_points.clone();
    final int N = points.size();
    // Widget may be inside a container
    final Point2D offset = GeometryTools.getDisplayOffset(widget);
    // Determine coordinate range of points
    double x0 = Double.MAX_VALUE, y0 = Double.MAX_VALUE;
    double x1 = 0, y1 = 0;
    for (int i = 0; i < N; ++i) {
        final double x = points.getX(i) - offset.getX();
        final double y = points.getY(i) - offset.getY();
        x0 = Math.min(x, x0);
        y0 = Math.min(y, y0);
        x1 = Math.max(x, x1);
        y1 = Math.max(y, y1);
    }
    // Adjust points relative to x0, y0 and widget's container offset
    for (int i = 0; i < N; ++i) {
        final double x = points.getX(i) - offset.getX();
        final double y = points.getY(i) - offset.getY();
        points.setX(i, x - x0);
        points.setY(i, y - y0);
    }
    changing_widget = true;
    try {
        if (N > 0)
            undo.execute(new SetWidgetPointsAction(widget.getProperty(propPoints), points, (int) x0, (int) y0, (int) (x1 - x0), (int) (y1 - y0)));
        else
            undo.execute(new SetWidgetPointsAction(widget.getProperty(propPoints), points));
    } finally {
        changing_widget = false;
    }
}