/// <summary>
/// Left mouse button is pressed
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseDown(IToolDrawArea drawArea, MouseEventArgs e)
{
changeState = null;
wasMove = false;
SelectMode = PointerSelectionMode.None;
var point = new Point(e.X, e.Y);
// Test for resizing (only if control is selected, cursor is on the handle)
foreach (IDrawObject o in drawArea.GraphicsCollection.Selection)
{
int handleNumber = o.HitTest(point);
if (handleNumber > (int)HandleNumber.None)
{
SelectMode = PointerSelectionMode.Size;
// keep resized object in class member
resizedObject = o;
resizedObjectHandle = handleNumber;
// Since we want to resize only one object, unselect all other objects
drawArea.GraphicsCollection.UnselectAll();
o.Selected = true;
selectedDrawObject = o;
changeState = new TrackChangeState(drawArea.GraphicsCollection);
break;
}
}
// Test for move (cursor is on the object)
if (SelectMode == PointerSelectionMode.None)
{
int n1 = drawArea.GraphicsCollection.Count;
IDrawObject o = null;
for (int i = 0; i < n1; i++)
{
if (drawArea.GraphicsCollection[i].HitTest(point) == 0)
{
o = drawArea.GraphicsCollection[i];
break;
}
}
if (o != null)
{
SelectMode = PointerSelectionMode.Move;
// Unselect all if Ctrl is not pressed and clicked object is not selected yet
if ((Control.ModifierKeys & Keys.Control) == 0 && !o.Selected)
drawArea.GraphicsCollection.UnselectAll();
// Select clicked object
o.Selected = true;
selectedDrawObject = o;
changeState = new TrackChangeState(drawArea.GraphicsCollection);
drawArea.Control.Cursor = Cursors.SizeAll;
}
}
// Net selection
if (SelectMode == PointerSelectionMode.None)
{
// click on background
if ((Control.ModifierKeys & Keys.Control) == 0)
drawArea.GraphicsCollection.UnselectAll();
SelectMode = PointerSelectionMode.NetSelection;
}
lastPoint.X = e.X;
lastPoint.Y = e.Y;
startPoint.X = e.X;
startPoint.Y = e.Y;
drawArea.Control.Capture = true;
drawArea.Control.Refresh();
if (SelectMode == PointerSelectionMode.NetSelection)
{
// Draw selection rectangle in initial position
ControlPaint.DrawReversibleFrame(
drawArea.Control.RectangleToScreen(GraphicUtility.GetNormalizedRectangle(startPoint, new Size(lastPoint))),
Color.Black,
FrameStyle.Dashed);
}
if (selectedDrawObject != null)
{
drawArea.SelectNewDrawObject(selectedDrawObject);
selectedDrawObject = null;
}
}
/// <summary>
/// Right mouse button is released
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseUp(IToolDrawArea drawArea, MouseEventArgs e)
{
if (SelectMode == PointerSelectionMode.NetSelection)
{
// Remove old selection rectangle
ControlPaint.DrawReversibleFrame(
drawArea.Control.RectangleToScreen(GraphicUtility.GetNormalizedRectangle(startPoint, new Size(lastPoint))),
Color.Black,
FrameStyle.Dashed);
// Make group selection
drawArea.GraphicsCollection.SelectInRectangle(
GraphicUtility.GetNormalizedRectangle(startPoint, new Size(lastPoint)));
SelectMode = PointerSelectionMode.None;
}
if (resizedObject != null)
{
// after resizing
resizedObject.Normalize();
resizedObject = null;
}
drawArea.Control.Capture = false;
drawArea.Control.Refresh();
if (changeState != null && wasMove)
{
// Keep state after moving/resizing and add command to history
changeState.NewState(drawArea.GraphicsCollection);
ConfigToolContext.Instance.ToolTracker.AddTrackToHistory(changeState);
changeState = null;
}
}