/// <summary>
/// Sets a control location based on location and docking style of target control
/// </summary>
/// <param name="me"></param>
/// <param name="target"></param>
/// <param name="dockToSide"></param>
/// <param name="buffer"></param>
public static void DockTo(this Control me, Control target, ControlEdge dockToSide, int buffer = 0)
{
if (target == null)
{
return;
}
switch (dockToSide)
{
case ControlEdge.Left:
me.Location = new Point((target.Left - me.Width) - buffer, target.Top);
break;
case ControlEdge.Right:
me.Location = new Point(target.Right + buffer, target.Top);
break;
case ControlEdge.Top:
me.Location = new Point(target.Left, (target.Top - me.Height) - buffer);
break;
case ControlEdge.Bottom:
me.Location = new Point(target.Left, (target.Bottom + buffer));
break;
default:
break;
}
}
public static void SnapTo(this Form me, Form target, ControlEdge myEdge)
{
if (target == null)
{
return;
}
switch (myEdge)
{
case ControlEdge.Left:
me.Location = new Point((target.Right), me.Location.Y);
break;
case ControlEdge.Right:
me.Location = new Point((target.Left - me.Width), me.Location.Y);
break;
case ControlEdge.Top:
me.Location = new Point(me.Location.X, target.Bottom);
break;
case ControlEdge.Bottom:
me.Location = new Point(me.Location.X, target.Top - me.Height);
break;
default:
break;
}
}
private void Size_MouseLeave(object sender, EventArgs e)
{
var c = (Control)sender;
m_Edge = ControlEdge.None;
m_IsEdgeDrawn = false;
c.Refresh();
}
public ControlDesigner(Control ctl, DesignElement designType, ControlEdge resizeType = ControlEdge.All, string caption = null)
{
Dbg.Assert(ctl != null, "Control designer can't be initialized without parent control");
ProcessedControl = ctl;
if (RealControl != null)
{
switch (RealControl.Dock)
{
case DockStyle.Top:
if ((resizeType & ControlEdge.Bottom) != 0)
{
ResizeEdges = ControlEdge.Bottom;
}
break;
case DockStyle.Bottom:
if ((resizeType & ControlEdge.Top) != 0)
{
ResizeEdges = ControlEdge.Top;
}
break;
case DockStyle.Left:
if ((resizeType & ControlEdge.Right) != 0)
{
ResizeEdges = ControlEdge.Right;
}
break;
case DockStyle.Right:
if ((resizeType & ControlEdge.Left) != 0)
{
ResizeEdges = ControlEdge.Left;
}
break;
case DockStyle.Fill:
ResizeEdges = ControlEdge.None;
break;
default:
ResizeEdges = resizeType;
break;
}
if (RealControl.Dock != DockStyle.None)
{
designType = ~DesignElement.Moving & designType;
}
}
DesignType = designType;
InitBehavior(Point.Empty, Size.Empty, caption);
}
private bool IsCursorInsideResizeArea(object sender, MouseEventArgs e, out ControlEdge edge)
{
var c = sender as Control;
if (c == null)
{
edge = ControlEdge.None;
return(false);
}
if (e.X <= (EdgeWidth * 4) && e.Y <= (EdgeWidth * 4) && (ResizeEdges & ControlEdge.TopLeft) == ControlEdge.TopLeft) //top left corner
{
c.Cursor = Cursors.SizeNWSE;
edge = ControlEdge.TopLeft;
return(true);
}
if (e.X > c.Width - (EdgeWidth * 4) && e.Y > c.Height - (EdgeWidth * 4) && (ResizeEdges & ControlEdge.RightBottom) == ControlEdge.RightBottom) //right bottom corner
{
c.Cursor = Cursors.SizeNWSE;
edge = ControlEdge.RightBottom;
return(true);
}
if (e.X <= EdgeWidth && (ResizeEdges & ControlEdge.Left) > 0)//left edge
{
c.Cursor = Cursors.VSplit;
edge = ControlEdge.Left;
return(true);
}
if ((e.X > c.Width - (EdgeWidth + 1)) && (ResizeEdges & ControlEdge.Right) > 0)// 'right edge
{
c.Cursor = Cursors.VSplit;
edge = ControlEdge.Right;
return(true);
}
if (e.Y <= EdgeWidth && (ResizeEdges & ControlEdge.Top) > 0) // 'top edge
{
c.Cursor = Cursors.HSplit;
edge = ControlEdge.Top;
return(true);
}
if ((e.Y > c.Height - (EdgeWidth + 1)) && (ResizeEdges & ControlEdge.Bottom) > 0)//bottom edge
{
c.Cursor = Cursors.HSplit;
edge = ControlEdge.Bottom;
return(true);
}
c.Cursor = Cursors.Default;
edge = ControlEdge.None;
return(false);
}
public static bool EdgesAreClose(this Form me, ControlEdge myEdge, Form other, int distance)
{
switch (myEdge)
{
case ControlEdge.Left:
if (Math.Abs(me.Left - other.Right) <= distance &&
((me.Top.IsBetween(other.Top, other.Bottom) || me.Bottom.IsBetween(other.Top, other.Bottom)) ||
other.Top.IsBetween(me.Top, me.Bottom) || other.Bottom.IsBetween(me.Top, me.Bottom)))
{
return(true);
}
break;
case ControlEdge.Right:
if (Math.Abs(me.Right - other.Left) <= distance &&
((me.Top.IsBetween(other.Top, other.Bottom) || me.Bottom.IsBetween(other.Top, other.Bottom)) ||
other.Top.IsBetween(me.Top, me.Bottom) || other.Bottom.IsBetween(me.Top, me.Bottom)))
{
return(true);
}
break;
case ControlEdge.Top:
if (Math.Abs(me.Top - other.Bottom) <= distance &&
((me.Left.IsBetween(other.Left, other.Right) || me.Right.IsBetween(other.Left, other.Right)) ||
other.Left.IsBetween(me.Left, me.Right) || other.Right.IsBetween(me.Left, me.Right)))
{
return(true);
}
break;
case ControlEdge.Bottom:
if (Math.Abs(me.Bottom - other.Top) <= distance &&
((me.Left.IsBetween(other.Left, other.Right) || me.Right.IsBetween(other.Left, other.Right)) ||
other.Left.IsBetween(me.Left, me.Right) || other.Right.IsBetween(me.Left, me.Right)))
{
return(true);
}
break;
default:
break;
}
return(false);
}
public static ControlEdge Opposite(this ControlEdge me)
{
switch (me)
{
case ControlEdge.None:
return(ControlEdge.None);
case ControlEdge.Left:
return(ControlEdge.Right);
case ControlEdge.Right:
return(ControlEdge.Left);
case ControlEdge.Top:
return(ControlEdge.Bottom);
case ControlEdge.Bottom:
return(ControlEdge.Top);
default:
return(ControlEdge.None);
}
}