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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. (http://www.novell.com)
//
// Authors:
// Peter Bartok pbartok@novell.com
//
//
// NOT COMPLETE
using System.Collections;
using System.ComponentModel;
using System.Drawing;
namespace System.Windows.Forms {
[DesignTimeVisible(false)]
[ToolboxItem(false)]
public sealed class MdiClient : Control {
#region Local Variables
private int mdi_created;
private Form active;
private HScrollBar hbar;
private VScrollBar vbar;
#endregion // Local Variables
#region Public Classes
public new class ControlCollection : Control.ControlCollection {
MdiClient owner;
public ControlCollection(MdiClient owner) : base(owner) {
this.owner = owner;
controls = new ArrayList ();
}
public override void Add(Control value) {
if ((value is Form) == false || !(((Form)value).IsMdiChild)) {
throw new ArgumentException("Form must be MdiChild");
}
base.Add (value);
SetChildIndex (value, 0); // always insert at front
// newest member is the active one
owner.ActiveMdiChild = (Form) value;
}
public override void Remove(Control value) {
base.Remove (value);
}
}
#endregion // Public Classes
#region Public Constructors
public MdiClient() {
BackColor = SystemColors.AppWorkspace;
Dock = DockStyle.Fill;
SetStyle (ControlStyles.Selectable, false);
}
#endregion // Public Constructors
protected override Control.ControlCollection CreateControlsInstance ()
{
return new MdiClient.ControlCollection (this);
}
protected override void WndProc(ref Message m) {
/*
switch ((Msg) m.Msg) {
case Msg.WM_PAINT: {
Console.WriteLine ("ignoring paint");
return;
}
}
*/
base.WndProc (ref m);
}
protected override void OnResize (EventArgs e)
{
base.OnResize (e);
// Should probably make this into one loop
SizeScrollBars ();
SizeMaximized ();
}
protected override void ScaleCore (float dx, float dy)
{
base.ScaleCore (dx, dy);
}
protected override void SetBoundsCore (int x, int y, int width, int height, BoundsSpecified specified)
{
base.SetBoundsCore (x, y, width, height, specified);
}
#region Public Instance Properties
[Localizable(true)]
public override System.Drawing.Image BackgroundImage {
get {
return base.BackgroundImage;
}
set {
base.BackgroundImage = value;
}
}
public Form[] MdiChildren {
get {
Form[] children;
children = new Form[Controls.Count];
Controls.CopyTo(children, 0);
return children;
}
}
#endregion // Public Instance Properties
#region Protected Instance Properties
protected override CreateParams CreateParams {
get {
return base.CreateParams;
}
}
#endregion // Protected Instance Properties
#region Public Instance Methods
public void LayoutMdi(MdiLayout value) {
throw new NotImplementedException();
}
#endregion // Public Instance Methods
#region Protected Instance Methods
#endregion // Protected Instance Methods
internal void EnsureScrollBars (int right, int bottom)
{
int width = Width;
int height = Height;
if (vbar != null && vbar.Visible)
width -= vbar.Width;
if (hbar != null && hbar.Visible)
height -= hbar.Height;
if (right > width) {
if (hbar == null) {
hbar = new HScrollBar ();
Controls.AddImplicit (hbar);
}
hbar.Visible = true;
} else {
if (hbar != null) {
bool found = false;
foreach (Form child in Controls) {
if (child == ActiveMdiChild)
continue;
if (child.Right < width)
continue;
found = true;
break;
}
hbar.Visible = found;
}
}
if (bottom > height) {
if (vbar == null) {
vbar = new VScrollBar ();
Controls.AddImplicit (vbar);
}
vbar.Visible = true;
} else {
if (vbar != null) {
bool found = false;
foreach (Form child in Controls) {
if (child == ActiveMdiChild)
continue;
if (child.Bottom < height)
continue;
found = true;
break;
}
vbar.Visible = found;
}
}
if (hbar != null && hbar.Visible)
CalcHBar (right, vbar != null && vbar.Visible);
if (vbar != null && vbar.Visible)
CalcVBar (bottom, hbar != null && hbar.Visible);
}
private void SizeScrollBars ()
{
int right = 0;
foreach (Form child in Controls) {
if (!child.Visible)
continue;
if (child.Right > right)
right = child.Right;
}
int bottom = 0;
foreach (Form child in Controls) {
if (!child.Visible)
continue;
if (child.Bottom > bottom)
bottom = child.Bottom;
}
int right_edge = Right;
int bottom_edge = Bottom;
int prev_right_edge;
int prev_bottom_edge;
bool need_hbar = false;
bool need_vbar = false;
do {
prev_right_edge = right_edge;
prev_bottom_edge = bottom_edge;
if (right > right_edge) {
need_hbar = true;
bottom_edge = Bottom - SystemInformation.HorizontalScrollBarHeight;
} else {
need_hbar = false;
bottom_edge = Bottom;
}
if (bottom > bottom_edge) {
need_vbar = true;
right_edge = Right - SystemInformation.VerticalScrollBarWidth;
} else {
need_vbar = false;
right_edge = Right;
}
} while (right_edge != prev_right_edge || bottom_edge != prev_bottom_edge);
if (need_hbar) {
if (hbar == null) {
hbar = new HScrollBar ();
Controls.AddImplicit (hbar);
}
hbar.Visible = true;
CalcHBar (right, vbar != null && vbar.Visible);
} else if (hbar != null)
hbar.Visible = false;
if (need_vbar) {
if (vbar == null) {
vbar = new VScrollBar ();
Controls.AddImplicit (vbar);
}
vbar.Visible = true;
CalcVBar (bottom, hbar != null && hbar.Visible);
} else if (vbar != null)
vbar.Visible = false;
}
private void CalcHBar (int right, bool vert_vis)
{
hbar.Left = 0;
hbar.Top = Height - hbar.Height;
hbar.Width = Width - (vert_vis ? vbar.Width : 0);
hbar.LargeChange = right;
hbar.SmallChange = right / 10;
hbar.Maximum = right - 1;
}
private void CalcVBar (int bottom, bool horz_vis)
{
vbar.Left = Width - vbar.Width;
vbar.Top = 0;
vbar.Height = Height - (horz_vis ? hbar.Height : 0);
vbar.LargeChange = bottom;
vbar.SmallChange = bottom / 10;
vbar.Maximum = bottom - 1;
}
private void SizeMaximized ()
{
foreach (Form child in Controls) {
if (!child.Visible)
continue;
if (child.WindowManager.Maximized)
child.Bounds = Bounds;
}
}
internal void ActivateChild (Form form)
{
form.BringToFront ();
active = form;
}
internal int ChildrenCreated {
get { return mdi_created; }
set { mdi_created = value; }
}
internal Form ActiveMdiChild {
get { return active; }
set { active = value; }
}
}
}
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