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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2005 Novell, Inc.
//
// Authors:
// Jackson Harper (jackson@ximian.com)
// TODO: Eventually we need to handle the cursor and resizing the parent
using System;
using System.Drawing;
namespace System.Windows.Forms {
internal class SizeGrip : Control {
#region Local Variables
private bool redraw;
private Point capture_point;
private int window_w;
private int window_h;
private bool show_grip;
private bool hide_pending;
#endregion // Local Variables
#region Constructors
public SizeGrip ()
{
this.Cursor = Cursors.SizeNWSE;
show_grip = true;
redraw = true;
hide_pending = false;
}
#endregion // Constructors
#region Properties
public bool ShowGrip {
get {
return show_grip;
}
set {
show_grip = value;
redraw = true;
}
}
#endregion // Properties
#region Methods
protected override void OnPaint (PaintEventArgs pe) {
if (redraw && show_grip) {
ControlPaint.DrawSizeGrip (pe.Graphics, BackColor, ClientRectangle);
}
base.OnPaint (pe);
}
protected override void OnSizeChanged (EventArgs e) {
base.OnSizeChanged (e);
redraw = true;
}
protected override void OnVisibleChanged (EventArgs e) {
base.OnVisibleChanged (e);
redraw = true;
}
protected override void OnMouseDown(MouseEventArgs e) {
Capture = true;
capture_point = Control.MousePosition;
window_w = parent.Width;
window_h = parent.Height;
}
protected override void OnMouseMove(MouseEventArgs e) {
if (this.is_captured) {
int delta_x;
int delta_y;
Point current_point;
current_point = Control.MousePosition;
delta_x = current_point.X - capture_point.X;
delta_y = current_point.Y - capture_point.Y;
this.parent.Size = new Size(window_w + delta_x, window_h + delta_y);
XplatUI.DoEvents();
}
}
protected override void OnMouseUp(MouseEventArgs e) {
if (Capture) {
Capture = false;
if (hide_pending) {
Hide();
hide_pending = false;
}
}
}
protected override void SetVisibleCore(bool value) {
if (Capture) {
if (value == false) {
hide_pending = true;
} else {
hide_pending = false;
}
return;
}
base.SetVisibleCore (value);
}
#endregion // Methods
}
}
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