private void PictureBox_MouseDown(object sender, MouseEventArgs e)
{
if ((Mode == MouseMode.Pan && e.Button == MouseButtons.Left) ||
(e.Button == MouseButtons.Middle))
{
// Start panning the image
PanStartMousePosition = e.Location;
PanStartPicturePosition = PictureBox.PicturePosition;
}
else if ((Mode == MouseMode.Pick || Mode == MouseMode.Erase) &&
e.Button == MouseButtons.Left &&
ActiveAnnotation == null)
{
// Pick and activate annotation and possibly also control point
var result = PictureBox.FindAnnotation(e.Location);
if (result != null)
{
if (Mode == MouseMode.Pick)
{
ActiveAnnotation = result.Item1;
ActiveControlPoint = result.Item2;
oldControlPointLocations.Clear();
oldControlPointLocations.AddRange(ActiveAnnotation.ControlPoints);
controlPointSelectLocation = new Vec3(PictureBox.ScreenToPicture(new Vec2(e.Location)), PictureBox.Slice);
}
else
{
// Erase annotation
PictureBox.Annotations.Remove(result.Item1);
Refresh();
}
}
}
else if ((Mode == MouseMode.AddAnnotation || Mode == MouseMode.Profile) &&
e.Button == MouseButtons.Left &&
ActiveAnnotation == null)
{
if (Mode == MouseMode.Profile)
{
NewAnnotationName = "Line segment";
EraseProfileAnnotation();
}
// Add new annotation object
if (!String.IsNullOrEmpty(NewAnnotationName))
{
ActiveAnnotation = AnnotationFactory.Create(NewAnnotationName);
PictureBox.Annotations.Add(ActiveAnnotation);
Vec3 pos = new Vec3(PictureBox.ScreenToPicture(new Vec2(e.Location)), PictureBox.Slice);
ActiveAnnotation.ControlPoints.Add(pos);
ActiveControlPoint = 0;
// Add another control point right away if multiple points are required.
if (ActiveAnnotation.RequiredPointCount > 1)
{
ActiveAnnotation.ControlPoints.Add(pos);
ActiveControlPoint = 1;
}
Refresh();
if (Mode != MouseMode.Profile)
{
if (ToolStrip != null)
{
ToolStrip.ResetAnnotation();
}
}
}
if (Mode == MouseMode.Profile)
{
ProfileAnnotation = ActiveAnnotation;
UpdateProfile();
}
}
}
