/// <summary>
/// MouseMove method for Guidelines
/// </summary>
/// <param name="X">mouse X position</param>
/// <param name="Y"> mouse Y position</param>
/// <param name="keys"> mouse and keyboard modifiers</param>
/// <param name="ps">the InteractivePlotSurface2D</param>
public override bool DoMouseMove(int X, int Y, Modifier keys, InteractivePlotSurface2D ps)
{
Rectangle plotArea = ps.PlotAreaBoundingBoxCache;
Rectangle lineExtent = Rectangle.Empty;
if (vertical_) {
if (xPos_ != -1) {
// set extents to erase current vertical guideline
//lineExtent = new Rectangle (yStart_.X, yStart_.Y, 1, (int)Math.Abs (yEnd_.Y - yStart_.Y));
ps.DrawOverlayLine(yStart_, yEnd_, lineColor_, false);
}
// Only display guideline when mouse is within the plotArea
if (plotArea.Contains(X,Y)) {
xPos_ = X;
yStart_ = new Point(X, plotArea.Top);
yEnd_ = new Point(X, plotArea.Bottom);
ps.DrawOverlayLine(yStart_, yEnd_, lineColor_, true);
}
else {
xPos_ = -1;
}
//if (xPos_ != -1) {
// // Invalidate line extents, then DoDraw will request a new line to be drawn
// ps.QueueDraw (lineExtent);
//}
}
if (horizontal_) {
if (yPos_ != -1) {
// set extents to erase current vertical guideline
//lineExtent = new Rectangle (xStart_.X, xStart_.Y, (int)Math.Abs (xEnd_.X - xStart_.X), 1);
ps.DrawOverlayLine(xStart_, xEnd_, lineColor_, false);
}
// Only display guideline when mouse is within the plotArea
if (plotArea.Contains(X,Y)) {
yPos_ = Y;
xStart_ = new Point(plotArea.Left,Y);
xEnd_ = new Point(plotArea.Right,Y);
ps.DrawOverlayLine(xStart_, xEnd_, lineColor_, true);
}
else {
yPos_ = -1;
}
//if (yPos_ != -1) {
// // Invalidate line extents, then DoDraw will request a new line to be drawn
// ps.QueueDraw (lineExtent);
//}
}
return false;
}
/// <summary>
/// MouseLeave method for Guidelines
/// </summary>
/// <param name="ps">the InteractivePlotSurface2D</param>
public override bool DoMouseLeave(InteractivePlotSurface2D ps)
{
Rectangle lineExtent = Rectangle.Empty;
if (vertical_) {
if (xPos_ != -1) {
// set extents to erase current vertical guideline
lineExtent = new Rectangle (yStart_.X, yStart_.Y, 1, (int)Math.Abs (yEnd_.Y - yStart_.Y));
ps.DrawOverlayLine(yStart_, yEnd_, lineColor_, false);
}
xPos_ = -1;
}
if (horizontal_) {
if (yPos_ != -1) {
// set extents to erase current vertical guideline
lineExtent = new Rectangle (xStart_.X, xStart_.Y, (int)Math.Abs (xEnd_.X - xStart_.X), 1);
ps.DrawOverlayLine(xStart_, xEnd_, lineColor_, false);
}
yPos_ = -1;
}
return false;
}
