private void control_MouseUp(object sender, MouseEventArgs e)
{
//if we are changing a control currently
if (_actionUnderwayOnControl != null)
{
_actionUnderwayOnControl.Location = new Point(
(int)(Math.Round(_actionUnderwayOnControl.Location.X / 5.0) * 5),
(int)(Math.Round(_actionUnderwayOnControl.Location.Y / 5.0) * 5));
_actionUnderwayOnControl.Size = new Size(
(int)(Math.Round(_actionUnderwayOnControl.Size.Width / 5.0) * 5),
(int)(Math.Round(_actionUnderwayOnControl.Size.Height / 5.0) * 5));
//save changes
foreach (KeyValuePair <DashboardControl, DashboardableControlHostPanel> kvp in _layoutUI.ControlDictionary)
{
if (kvp.Value == _actionUnderwayOnControl)
{
kvp.Key.Width = _actionUnderwayOnControl.Width;
kvp.Key.Height = _actionUnderwayOnControl.Height;
kvp.Key.X = _actionUnderwayOnControl.Location.X;
kvp.Key.Y = _actionUnderwayOnControl.Location.Y;
kvp.Key.SaveToDatabase();
}
}
}
_plannedAction = EditModeAction.Move;
_plannedControl = null;
_actionUnderway = EditModeAction.None;
_actionUnderwayOnControl = null;
}
void control_MouseDown(object sender, MouseEventArgs e)
{
if (_plannedAction != EditModeAction.None)
{
_actionUnderway = _plannedAction;
_actionUnderwayOnControl = _plannedControl;
}
}
void control_MouseLeave(object sender, EventArgs e)
{
//if there is no action underway
if (_actionUnderway == EditModeAction.None)
{
//clear the proposed action
Cursor.Current = Cursors.Default;
_plannedAction = EditModeAction.Move;
_plannedControl = null;
}
}
void control_MouseMove(object sender, MouseEventArgs e)
{
var s = (UserControl)sender;
var currentScreenCoordinate = s.PointToScreen(e.Location);
if (lastKnownScreenCoordinate == Point.Empty)
{
lastKnownScreenCoordinate = currentScreenCoordinate;
return;
}
var layoutUIVisibleArea = _layoutUI.GetVisibleArea();
if (_actionUnderway != EditModeAction.None)
{
var vector = new Point(
(currentScreenCoordinate.X - lastKnownScreenCoordinate.X),
(currentScreenCoordinate.Y - lastKnownScreenCoordinate.Y));
//move the control
if (_actionUnderway == EditModeAction.Move)
{
_actionUnderwayOnControl.Location
= new Point(
Math.Max(0, Math.Min(layoutUIVisibleArea.Width - _actionUnderwayOnControl.Width, _actionUnderwayOnControl.Location.X + vector.X)),
Math.Max(0, Math.Min(layoutUIVisibleArea.Height - _actionUnderwayOnControl.Height, _actionUnderwayOnControl.Location.Y + vector.Y))
);
_actionUnderwayOnControl.Invalidate();
}
else
if (_actionUnderway == EditModeAction.Resize)
{
_actionUnderwayOnControl.Size
= new Size(
//Do not resize below the minimum size
Math.Max(MinimumControlSize,
//do not allow resizing beyond the right of the control it is hosted in
Math.Min(layoutUIVisibleArea.Width - _actionUnderwayOnControl.Location.X,
//change width by the length of the vector X
_actionUnderwayOnControl.Width + (int)vector.X))
,
//Do not resize below the minimum size
Math.Max(MinimumControlSize,
//do not allow resizing beyond the bottom of the control it is hosted in
Math.Min(layoutUIVisibleArea.Height - _actionUnderwayOnControl.Location.Y,
_actionUnderwayOnControl.Height + (int)vector.Y))
);
_actionUnderwayOnControl.Invalidate();
}
}
lastKnownScreenCoordinate = currentScreenCoordinate;
if (IsResizeLocation((UserControl)sender, e))
{
Cursor.Current = Cursors.SizeNWSE;
_plannedAction = EditModeAction.Resize;
_plannedControl = (UserControl)sender;
}
else
{
Cursor.Current = Cursors.SizeAll;
_plannedAction = EditModeAction.Move;
_plannedControl = (UserControl)sender;
}
}
