public DragController(Point firstPoint, DocumentFrame frame, IHandleFlyweight handle)
{
_firstPoint = firstPoint;
_frame = frame;
_handle = handle;
_memento = frame.CreateMemento();
}
public void UpdateDrag(Point firstPoint, Point currentPoint, Size delta, DocumentFrame frame, DocumentFrameMemento memento)
{
LabelDocumentFrame labelFrame = (LabelDocumentFrame)frame;
labelFrame.RestoreFromMemento(memento);
labelFrame.CallOutOffsetInDocument += delta;
}
public bool IsHit(DocumentFrame frame, Point point)
{
Point centrePoint = GetCentrePoint(frame);
Size delta = new Size(centrePoint) - new Size(point);
return delta.Width * delta.Width + delta.Height * delta.Height < _radius * _radius;
}
public void Paint(DocumentFrame frame, Graphics g, DocumentPaintResources resources)
{
Point centrePoint = GetCentrePoint(frame);
SmoothingMode oldSmoothingMode = g.SmoothingMode;
g.SmoothingMode = SmoothingMode.AntiAlias;
Rectangle drawRectangle = new Rectangle(centrePoint, new Size(0, 0));
drawRectangle.Inflate(_radius, _radius);
g.FillEllipse(resources.HandleBrush, drawRectangle);
g.SmoothingMode = oldSmoothingMode;
}
public void SendFrameToBack(DocumentFrame documentFrame)
{
_document.SendFrameToBack(documentFrame);
}
public void UpdateDrag(Point firstPoint, Point currentPoint, Size delta, DocumentFrame frame, DocumentFrameMemento memento)
{
frame.RestoreFromMemento(memento);
frame.OffsetInDocument += delta;
}
public void Paint(DocumentFrame frame, Graphics g, DocumentPaintResources resources)
{
// The move handle isn't painted.
}
public bool IsHit(DocumentFrame frame, Point point)
{
return frame.HitBounds.Contains(point);
}
Rectangle GetHandleBounds(DocumentFrame frame)
{
Rectangle shiftedRectangle = frame.HitBounds;
shiftedRectangle.Offset(
_outerRectangleShift.X * (shiftedRectangle.Width + 10),
_outerRectangleShift.Y * (shiftedRectangle.Height + 10));
Rectangle cutOutRectangle = frame.HitBounds;
cutOutRectangle.Inflate(20, 20);
return Rectangle.Intersect(shiftedRectangle, cutOutRectangle);
}
public void SendFrameToBack(DocumentFrame documentFrame)
{
ThrowOnInvalidDocumentFrame(documentFrame);
_frames.Remove(documentFrame);
_frames.Insert(0, documentFrame);
}
public void BringFrameToFront(DocumentFrame documentFrame)
{
ThrowOnInvalidDocumentFrame(documentFrame);
_frames.Remove(documentFrame);
_frames.Add(documentFrame);
}
Point GetCentrePoint(DocumentFrame frame)
{
LabelDocumentFrame labelFrame = (LabelDocumentFrame)frame;
return new Point(labelFrame.CallOutOffsetInDocument);
}
public void SelectNone()
{
_selectedFrame = null;
if (SelectedFrameChanged != null) SelectedFrameChanged(this, EventArgs.Empty);
}
public void DeleteFrame(DocumentFrame documentFrame)
{
_document.DeleteFrame(documentFrame);
}
public void BringFrameToFront(DocumentFrame documentFrame)
{
_document.BringFrameToFront(documentFrame);
}
public void AddNewFrame(DocumentFrame documentFrame)
{
_document.Frames.Add(documentFrame);
}
public bool IsHit(DocumentFrame frame, Point point)
{
return GetHandleBounds(frame).Contains(point);
}
public void Paint(DocumentFrame frame, Graphics g, DocumentPaintResources resources)
{
SmoothingMode oldSmoothingMode = g.SmoothingMode;
g.SmoothingMode = SmoothingMode.AntiAlias;
using (GraphicsPath path = Interlace.Drawing.Utilities.CreateRoundedRectanglePath(GetHandleBounds(frame), 5.0f))
{
g.FillPath(resources.HandleBrush, path);
}
g.SmoothingMode = oldSmoothingMode;
}
void PasteUpControl_MouseDown(object sender, MouseEventArgs e)
{
// Test hitting a handle first:
if (_selectedFrame != null)
{
IHandleFlyweight handle = _selectedFrame.FindHitHandleOrNull(e.Location);
if (handle != null)
{
_dragController = new DragController(e.Location, _selectedFrame, handle);
_dragController.BeginDrag();
return;
}
}
// Then try hitting a frame:
DocumentFrame hitFrame = FindHitFrameOrNull(e.Location);
if (_selectedFrame != hitFrame)
{
_selectedFrame = hitFrame;
if (SelectedFrameChanged != null) SelectedFrameChanged(this, EventArgs.Empty);
Invalidate();
}
}
internal override void Restore(DocumentFrame frame)
{
base.Restore(frame);
RectangularDocumentFrame rectangularFrame = (RectangularDocumentFrame)frame;
rectangularFrame._clipBounds = _clipBounds;
}
internal override void Restore(DocumentFrame frame)
{
base.Restore(frame);
LabelDocumentFrame labelFrame = (LabelDocumentFrame)frame;
labelFrame._callOutOffsetInDocument = _callOutOffsetInDocument;
}
public DocumentFrameMemento(DocumentFrame frame)
{
_offsetInDocument = frame.OffsetInDocument;
}
public void DeleteFrame(DocumentFrame documentFrame)
{
ThrowOnInvalidDocumentFrame(documentFrame);
_frames.Remove(documentFrame);
documentFrame.Dispose();
}
internal virtual void Restore(DocumentFrame frame)
{
frame.OffsetInDocument = _offsetInDocument;
}
void ThrowOnInvalidDocumentFrame(DocumentFrame documentFrame)
{
if (documentFrame == null)
{
throw new ArgumentNullException("documentFrame");
}
if (!_frames.Contains(documentFrame))
{
throw new ArgumentException(
"The document frame supplied to a document method is not actually within the document.", "documentFrame");
}
}
public void UpdateDrag(Point firstPoint, Point currentPoint, Size delta, DocumentFrame frame, DocumentFrameMemento memento)
{
RectangularDocumentFrame rectangularFrame = (RectangularDocumentFrame)frame;
frame.RestoreFromMemento(memento);
Rectangle clipBounds = rectangularFrame.ClipBounds;
if (_isEast) clipBounds.Width += delta.Width;
if (_isSouth)
{
clipBounds.Y += delta.Height;
clipBounds.Height -= delta.Height;
}
if (_isWest)
{
clipBounds.X += delta.Width;
clipBounds.Width -= delta.Width;
}
if (_isNorth) clipBounds.Height += delta.Height;
clipBounds.Intersect(rectangularFrame.ObjectBounds);
rectangularFrame.ClipBounds = clipBounds;
}