/// <summary>
/// Add new object to draw area.
/// Function is called when user left-clicks draw area,
/// and one of ToolObject-derived tools is active.
/// </summary>
/// <param name="drawArea"></param>
/// <param name="o"></param>
protected void AddNewObject(ImageDrawBox drawArea, DrawObject o)
{
drawArea.GraphicsList.UnselectAll();
o.Selected = true;
drawArea.GraphicsList.Add(o);
drawArea.Capture = true;
drawArea.Refresh();
drawArea.SetDirty();
}
/// <summary>
/// Mouse is moved.
/// None button is pressed, or left button is pressed.
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseMove(ImageDrawBox drawArea, MouseEventArgs e)
{
Point pointscroll = GetEventPointInArea(drawArea, e);
Point oldPoint = lastPoint;
wasMove = true;
// set cursor when mouse button is not pressed
if (e.Button == MouseButtons.None)
{
Cursor cursor = null;
for (int i = 0; i < drawArea.GraphicsList.Count; i++)
{
int n = drawArea.GraphicsList[i].HitTest(pointscroll);
if (n > 0)
{
cursor = drawArea.GraphicsList[i].GetHandleCursor(n);
break;
}
}
if (cursor == null)
{
cursor = Cursors.Default;
}
drawArea.Cursor = cursor;
return;
}
if (e.Button != MouseButtons.Left)
{
return;
}
/// Left button is pressed
// Find difference between previous and current position
int dx = e.X - lastPoint.X;
int dy = e.Y - lastPoint.Y;
lastPoint.X = e.X;
lastPoint.Y = e.Y;
// resize
if (selectMode == SelectionMode.Size)
{
if (resizedObject != null)
{
resizedObject.MoveHandleTo(pointscroll, resizedObjectHandle);
drawArea.SetDirty();
drawArea.Refresh();
drawArea.GraphicsList.Dirty = true;
}
}
// move
if (selectMode == SelectionMode.Move)
{
foreach (DrawObject o in drawArea.GraphicsList.Selection)
{
//o.Move(dx, dy);
o.Move((int)(Math.Round(dx / drawArea.ZoomFactor)), (int)(Math.Round(dy / drawArea.ZoomFactor)));
}
drawArea.Cursor = Cursors.SizeAll;
drawArea.SetDirty();
drawArea.Refresh();
drawArea.GraphicsList.Dirty = true;
}
if (selectMode == SelectionMode.NetSelection)
{
// Remove old selection rectangle
ControlPaint.DrawReversibleFrame(
drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, oldPoint)),
Color.Black,
FrameStyle.Dashed);
// Draw new selection rectangle
ControlPaint.DrawReversibleFrame(
drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, new Point(e.X, e.Y))),
Color.Black,
FrameStyle.Dashed);
return;
}
}