/// <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(DrawArea 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, ot left button is pressed. /// </summary> /// <param name="drawArea"></param> /// <param name="e"></param> public override void OnMouseMove(DrawArea drawArea, MouseEventArgs e) { Point point = new Point(e.X, e.Y); // 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(point); 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(point, resizedObjectHandle); drawArea.SetDirty(); drawArea.Refresh(); } } // move if (selectMode == SelectionMode.Move) { int n = drawArea.GraphicsList.SelectionCount; for (int i = 0; i < n; i++) { drawArea.GraphicsList.GetSelectedObject(i).Move(dx, dy); } drawArea.Cursor = Cursors.SizeAll; drawArea.SetDirty(); drawArea.Refresh(); } if (selectMode == SelectionMode.NetSelection) { drawArea.NetRectangle = DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint); drawArea.Refresh(); return; } }