private void deleteToolStripMenuItem_Click(object sender, EventArgs e)
{
CommandDelete command = new CommandDelete(drawArea.Graphics);
if (drawArea.Graphics.DeleteSelection())
{
drawArea.SetDirty();
drawArea.Refresh();
drawArea.AddCommandToHistory(command);
}
}
/// <summary>
/// Left mouse is released.
/// New object is created and resized.
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseUp(DrawArea drawArea, MouseEventArgs e)
{
if (drawArea.Graphics.Count > 0)
{
if (drawArea.Graphics.First.Shape.Length >= 2)//有一定长度才画图
{
DrawObject draw = drawArea.Graphics.First;
draw.ShowParamSetting(e.Location);
draw.BulidWay(draw.WaySetter);
if (draw.WaySetter.CBCreateReverseWay.Checked == true)
{
DrawObject ctrWay = draw.BuildCtrWay();
drawArea.Graphics.AddFirst(ctrWay);
drawArea.SetDirty();
drawArea.AddCommandToHistory(new CommandAdd(ctrWay));
}
drawArea.AddCommandToHistory(new CommandAdd(drawArea.Graphics.First));
drawArea.ActiveTool = DrawArea.DrawToolType.Pointer;
drawArea.Capture = false;
drawArea.Refresh();
}
}
//drawArea.GraphicsList[0].Normalize();
//drawArea.AddCommandToHistory(new CommandAdd(drawArea.GraphicsList[0]));
//drawArea.ActiveTool = DrawArea.DrawToolType.Pointer;
//drawArea.Capture = false;
//drawArea.Refresh();
}
/// <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.Graphics.UnselectAll();
o.Selected = true;
drawArea.Graphics.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(DrawArea drawArea, MouseEventArgs e)
{
Point point = new Point(e.X, e.Y);
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.Graphics.Count; i++)
{
int n = drawArea.Graphics[i].HitTest(point);
if (n > 0)
{
cursor = drawArea.Graphics[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)
{
foreach (DrawObject o in drawArea.Graphics.Selection)
{
o.Move(dx, dy);
}
drawArea.Cursor = Cursors.SizeAll;
drawArea.SetDirty();
drawArea.Refresh();
}
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, point)),
Color.Black,
FrameStyle.Dashed);
return;
}
}