public override void OnMouseUp(DrawArea drawArea, MouseEventArgs e)
{
int al = drawArea.TheLayers.ActiveLayerIndex;
if (selectMode == SelectionMode.NetSelection)
{
// Group selection
drawArea.TheLayers[al].Graphics.SelectInRectangle(drawArea.NetRectangle);
selectMode = SelectionMode.None;
drawArea.DrawNetRectangle = false;
}
if (resizedObject != null)
{
// Sau khi resize
resizedObject.Normalize();
resizedObject = null;
}
drawArea.Capture = false;
drawArea.Refresh();
if (commandChangeState != null && wasMove)
{
commandChangeState.NewState(drawArea.TheLayers);
drawArea.AddCommandToHistory(commandChangeState);
commandChangeState = null;
}
lastPoint = drawArea.BackTrackMouse(e.Location);
}
/* --- Phương thức --- */
public override void OnMouseDown(DrawArea drawArea, MouseEventArgs e)
{
commandChangeState = null;
wasMove = false;
selectMode = SelectionMode.None;
Point point = drawArea.BackTrackMouse(new Point(e.X, e.Y));
// Kiểm tra có phải là đang resize
int al = drawArea.TheLayers.ActiveLayerIndex;
int n = drawArea.TheLayers[al].Graphics.SelectionCount;
for (int i = 0; i < n; i++)
{
DrawObject o = drawArea.TheLayers[al].Graphics.GetSelectedObject(i);
int handleNumber = o.HitTest(point);
if (handleNumber > 0)
{
selectMode = SelectionMode.Size;
// Giữ đối tượng cần resize
resizedObject = o;
resizedObjectHandle = handleNumber;
// Khi resize một đối tượng phải unselect các đối tượng khác
drawArea.TheLayers[al].Graphics.UnselectAll();
o.Selected = true;
commandChangeState = new CommandChangeState(drawArea.TheLayers);
break;
}
}
// Kiểm tra có phải là đang move
if (selectMode == SelectionMode.None)
{
int n1 = drawArea.TheLayers[al].Graphics.Count;
DrawObject o = null;
for (int i = 0; i < n1; i++)
{
if (drawArea.TheLayers[al].Graphics[i].HitTest(point) == 0)
{
o = drawArea.TheLayers[al].Graphics[i];
break;
}
}
if (o != null)
{
selectMode = SelectionMode.Move;
// Unselect tất cả nếu Ctrl chưa nhấn và một đối tượng chưa được chọn
if ((Control.ModifierKeys & Keys.Control) == 0 &&
!o.Selected)
{
drawArea.TheLayers[al].Graphics.UnselectAll();
}
o.Selected = true;
commandChangeState = new CommandChangeState(drawArea.TheLayers);
drawArea.Cursor = Cursors.SizeAll;
}
}
// Kiểm tra có phải là đang group selection
if (selectMode == SelectionMode.None)
{
if ((Control.ModifierKeys & Keys.Control) == 0)
{
drawArea.TheLayers[al].Graphics.UnselectAll();
}
selectMode = SelectionMode.NetSelection;
drawArea.DrawNetRectangle = true;
}
lastPoint.X = point.X;
lastPoint.Y = point.Y;
startPoint.X = point.X;
startPoint.Y = point.Y;
drawArea.Capture = true;
drawArea.NetRectangle = DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint);
drawArea.Refresh();
}
