void SurfaceMouseMove(object sender, MouseEventArgs e)
{
Point currentMouse = MouseHelper.FixMouseCoordinates(e);
if (DrawingMode != DrawingModes.None)
{
Cursor = Cursors.Cross;
}
else
{
Cursor = Cursors.Default;
}
if (mouseDown)
{
if (mouseDownElement != null) // an element is currently dragged
{
mouseDownElement.Invalidate();
selectedElements.HideGrippers();
// Move the element
if (mouseDownElement.Selected)
{
if (!isSurfaceMoveMadeUndoable)
{
// Only allow one undoable per mouse-down/move/up "cycle"
isSurfaceMoveMadeUndoable = true;
selectedElements.MakeBoundsChangeUndoable(false);
}
// dragged element has been selected before -> move all
selectedElements.MoveBy(currentMouse.X - mouseStart.X, currentMouse.Y - mouseStart.Y);
}
else
{
if (!isSurfaceMoveMadeUndoable)
{
// Only allow one undoable per mouse-down/move/up "cycle"
isSurfaceMoveMadeUndoable = true;
mouseDownElement.MakeBoundsChangeUndoable(false);
}
// dragged element is not among selected elements -> just move dragged one
mouseDownElement.MoveBy(currentMouse.X - mouseStart.X, currentMouse.Y - mouseStart.Y);
}
mouseStart = currentMouse;
mouseDownElement.Invalidate();
modified = true;
}
else if (drawingElement != null)
{
if (!drawingElement.HandleMouseMove(currentMouse.X, currentMouse.Y))
{
// an element is currently drawn
drawingElement.Invalidate();
drawingElement.Width = currentMouse.X - drawingElement.Left;
drawingElement.Height = currentMouse.Y - drawingElement.Top;
drawingElement.Invalidate();
}
modified = true;
}
}
}
void SurfaceMouseDown(object sender, MouseEventArgs e)
{
mouseStart = MouseHelper.FixMouseCoordinates(e);
mouseDown = true;
isSurfaceMoveMadeUndoable = false;
if (cropContainer != null && ((undrawnElement == null) || (undrawnElement != null && DrawingMode != DrawingModes.Crop)))
{
RemoveElement(cropContainer, false);
cropContainer = null;
drawingElement = null;
}
if (drawingElement == null && DrawingMode != DrawingModes.None)
{
if (undrawnElement == null)
{
DeselectAllElements();
if (undrawnElement == null)
{
CreateUndrawnElement();
}
}
drawingElement = undrawnElement;
drawingElement.Status = EditStatus.DRAWING;
undrawnElement = null;
// if a new element has been drawn, set location and register it
if (drawingElement != null)
{
drawingElement.PropertyChanged += ElementPropertyChanged;
if (!drawingElement.HandleMouseDown(mouseStart.X, mouseStart.Y))
{
drawingElement.Left = mouseStart.X;
drawingElement.Top = mouseStart.Y;
}
AddElement(drawingElement);
drawingElement.Selected = true;
}
}
else
{
// check whether an existing element was clicked
// we save mouse down element separately from selectedElements (checked on mouse up),
// since it could be moved around before it is actually selected
mouseDownElement = elements.ClickableElementAt(mouseStart.X, mouseStart.Y);
if (mouseDownElement != null)
{
mouseDownElement.Status = EditStatus.MOVING;
}
}
}
private void gripperMouseMove(object sender, MouseEventArgs e)
{
Point mouseLocation = MouseHelper.FixMouseCoordinates(e);
if (Status.Equals(EditStatus.RESIZING))
{
// check if we already made this undoable
if (!isMadeUndoable)
{
// don't allow another undo until we are finished with this move
isMadeUndoable = true;
// Make undo-able
MakeBoundsChangeUndoable(false);
}
Invalidate();
SuspendLayout();
Label gr = (Label)sender;
int gripperIndex = Int16.Parse(gr.Name.Substring(7));
if (gripperIndex <= 2) // top row
{
this.Top += mouseLocation.Y - my;
this.Height -= mouseLocation.Y - my;
}
else if (gripperIndex >= 4 && gripperIndex <= 6) // bottom row
{
this.Height += mouseLocation.Y - my;
}
if (gripperIndex >= 2 && gripperIndex <= 4) // right row
{
this.Width += mouseLocation.X - mx;
}
else if (gripperIndex >= 6 || gripperIndex == 0) // left row
{
this.Left += mouseLocation.X - mx;
this.Width -= mouseLocation.X - mx;
}
ResumeLayout();
Invalidate();
}
}
void SurfaceMouseUp(object sender, MouseEventArgs e)
{
Point currentMouse = MouseHelper.FixMouseCoordinates(e);
elements.Status = EditStatus.IDLE;
if (mouseDownElement != null)
{
mouseDownElement.Status = EditStatus.IDLE;
}
mouseDown = false;
mouseDownElement = null;
if (DrawingMode == DrawingModes.None)
{
// check whether an existing element was clicked
DrawableContainer element = elements.ClickableElementAt(currentMouse.X, currentMouse.Y);
bool shiftModifier = (Control.ModifierKeys & Keys.Shift) == Keys.Shift;
if (element != null)
{
element.Invalidate();
bool alreadySelected = selectedElements.Contains(element);
if (shiftModifier)
{
if (alreadySelected)
{
DeselectElement(element);
}
else
{
SelectElement(element);
}
}
else
{
if (!alreadySelected)
{
DeselectAllElements();
SelectElement(element);
}
}
}
else if (!shiftModifier)
{
DeselectAllElements();
}
}
if (selectedElements.Count > 0)
{
selectedElements.ShowGrippers();
selectedElements.Selected = true;
}
if (drawingElement != null)
{
if (!drawingElement.InitContent())
{
elements.Remove(drawingElement);
drawingElement.Invalidate();
}
else
{
drawingElement.HandleMouseUp(currentMouse.X, currentMouse.Y);
drawingElement.Invalidate();
if (Math.Abs(drawingElement.Width) < 5 && Math.Abs(drawingElement.Height) < 5)
{
drawingElement.Width = 25;
drawingElement.Height = 25;
}
SelectElement(drawingElement);
drawingElement.Selected = true;
}
drawingElement = null;
}
}
