/// <summary>
/// Constructor for moving or resizing a single control
/// </summary>
/// <param name="c"></param>
/// <param name="state"></param>
/// <param name="MouseOrigin"></param>
/// <param name="minWidth"></param>
/// <param name="minHeight"></param>
public DaggerOverlay(Control c, DaggerNodeAlterState state, Point MouseOrigin, int minWidth, int minHeight)
{
_control = c;
editstate = state;
Point ulcornerPoint = c.PointToScreen(new Point(0, 0));
origin = new Point(MouseOrigin.X - ulcornerPoint.X, MouseOrigin.Y - ulcornerPoint.Y);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.Blue;
this.ForeColor = System.Drawing.Color.LightGreen;
this.ControlBox = false;
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
this.ShowInTaskbar = false;
this.Name = "EditOverlay";
this.Opacity = 0;
//if we are just moving it, copy the region of the control
if (state == DaggerNodeAlterState.Move)
{
Region = c.Region;
Bitmap b = new Bitmap(c.Width, c.Height);
c.DrawToBitmap(b, c.ClientRectangle);
this.BackgroundImage = b;
}
else
{
//if we are resizing, make adjustments for mouse origin
_minWidth = minWidth;
_minHeight = minHeight;
Point lrCornerPoint = c.PointToScreen(new Point(c.Width, c.Height));
_resizeOffsetX = lrCornerPoint.X - MouseOrigin.X;
_resizeOffsetY = lrCornerPoint.Y - MouseOrigin.Y;
}
}
/// <summary>
/// Constructor for moving multiple controls
/// </summary>
/// <param name="controls"></param>
/// <param name="MouseOrigin"></param>
public DaggerOverlay(List <Control> controls, Point MouseOrigin)
{
_multiControls = controls;
editstate = DaggerNodeAlterState.Move;
// get the upperleft-most and lowerright-most control positions
Point ulcornerPoint = _multiControls[0].PointToScreen(new Point(0, 0));
Point lrcornerPoint = _multiControls[0].PointToScreen(new Point(_multiControls[0].Width, _multiControls[0].Height));
foreach (Control c in _multiControls)
{
Point tp1 = c.PointToScreen(new Point(0, 0));
Point tp2 = c.PointToScreen(new Point(c.Width, c.Height));
ulcornerPoint = new Point(Math.Min(ulcornerPoint.X, tp1.X), Math.Min(ulcornerPoint.Y, tp1.Y));
lrcornerPoint = new Point(Math.Max(lrcornerPoint.X, tp2.X), Math.Max(lrcornerPoint.Y, tp2.Y));
}
// calc the size needed from the previous points
_multiControlSize = new Size(lrcornerPoint.X - ulcornerPoint.X, lrcornerPoint.Y - ulcornerPoint.Y);
origin = new Point(MouseOrigin.X - ulcornerPoint.X, MouseOrigin.Y - ulcornerPoint.Y);
_multiControlCurrentLocation = ulcornerPoint;
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.Blue;
this.ForeColor = System.Drawing.Color.LightGreen;
this.ControlBox = false;
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
this.ShowInTaskbar = false;
this.Name = "EditOverlay";
this.Opacity = 0;
this.BackgroundImage = new Bitmap(_multiControlSize.Width, _multiControlSize.Height);
Graphics g = Graphics.FromImage(this.BackgroundImage);
// composite the regions and bitmaps of all the controls into the overlay window
foreach (Control c in _multiControls)
{
Region rr = new Region(c.Region.GetRegionData());
Point screenPoint = c.PointToScreen(new Point(0, 0));
rr.Translate(screenPoint.X - _multiControlCurrentLocation.X, screenPoint.Y - _multiControlCurrentLocation.Y);
if (Region != null)
{
Region.Union(rr);
}
else
{
_multiControlRegion = Region = new Region(rr.GetRegionData());
}
rr.Dispose();
// copy the controls bitmap onto this one
Bitmap b = new Bitmap(c.Width, c.Height);
c.DrawToBitmap(b, c.ClientRectangle);
g.DrawImage(b, screenPoint.X - _multiControlCurrentLocation.X, screenPoint.Y - _multiControlCurrentLocation.Y);
}
g.Dispose();
}
