314 lines
9.2 KiB
C#
314 lines
9.2 KiB
C#
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//
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// StatusStrip.cs
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Copyright (c) 2006 Jonathan Pobst
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//
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// Authors:
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// Jonathan Pobst (monkey@jpobst.com)
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//
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using System;
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using System.Drawing;
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using System.ComponentModel;
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using System.Runtime.InteropServices;
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namespace System.Windows.Forms
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{
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[ClassInterface (ClassInterfaceType.AutoDispatch)]
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[ComVisible (true)]
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public class StatusStrip : ToolStrip
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{
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private bool sizing_grip;
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public StatusStrip ()
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{
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SetStyle (ControlStyles.ResizeRedraw, true);
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base.CanOverflow = false;
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this.GripStyle = ToolStripGripStyle.Hidden;
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base.LayoutStyle = ToolStripLayoutStyle.Table;
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base.RenderMode = ToolStripRenderMode.System;
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this.sizing_grip = true;
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base.Stretch = true;
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}
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#region Public Properties
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[DefaultValue (DockStyle.Bottom)]
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public override DockStyle Dock {
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get { return base.Dock; }
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set { base.Dock = value; }
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}
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[Browsable (false)]
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[DefaultValue (false)]
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public new bool CanOverflow {
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get { return base.CanOverflow; }
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set { base.CanOverflow = value; }
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}
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[DefaultValue (ToolStripGripStyle.Hidden)]
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public new ToolStripGripStyle GripStyle {
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get { return base.GripStyle; }
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set { base.GripStyle = value; }
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}
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[DefaultValue (ToolStripLayoutStyle.Table)]
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public new ToolStripLayoutStyle LayoutStyle {
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get { return base.LayoutStyle; }
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set { base.LayoutStyle = value; }
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}
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[Browsable (false)]
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public new Padding Padding {
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get { return base.Padding; }
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set { base.Padding = value; }
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}
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[DefaultValue (false)]
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public new bool ShowItemToolTips {
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get { return base.ShowItemToolTips; }
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set { base.ShowItemToolTips = value; }
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}
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[Browsable (false)]
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public Rectangle SizeGripBounds {
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get { return new Rectangle (this.Width - 12, 0, 12, this.Height); }
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}
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[DefaultValue (true)]
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public bool SizingGrip {
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get { return this.sizing_grip; }
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set { this.sizing_grip = value; }
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}
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[DefaultValue (true)]
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public new bool Stretch {
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get { return base.Stretch; }
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set { base.Stretch = value; }
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}
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#endregion
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#region Protected Properties
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protected override DockStyle DefaultDock {
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get { return DockStyle.Bottom; }
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}
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protected override Padding DefaultPadding {
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get { return new Padding (1, 0, 14, 0); }
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}
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protected override bool DefaultShowItemToolTips {
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get { return false; }
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}
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protected override Size DefaultSize {
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get { return new Size (200, 22); }
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}
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#endregion
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#region Protected Methods
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protected override AccessibleObject CreateAccessibilityInstance ()
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{
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return new StatusStripAccessibleObject ();
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}
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protected internal override ToolStripItem CreateDefaultItem (string text, Image image, EventHandler onClick)
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{
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if (text == "-")
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return new ToolStripSeparator ();
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return new ToolStripLabel (text, image, false, onClick);
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}
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protected override void Dispose (bool disposing)
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{
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base.Dispose (disposing);
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}
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protected override void OnLayout (LayoutEventArgs levent)
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{
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this.OnSpringTableLayoutCore ();
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this.Invalidate ();
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}
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protected override void OnPaintBackground (PaintEventArgs e)
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{
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base.OnPaintBackground (e);
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if (this.sizing_grip)
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this.Renderer.DrawStatusStripSizingGrip (new ToolStripRenderEventArgs (e.Graphics, this, Bounds, SystemColors.Control));
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}
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protected virtual void OnSpringTableLayoutCore ()
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{
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if (!this.Created)
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return;
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ToolStripItemOverflow[] overflow = new ToolStripItemOverflow[this.Items.Count];
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ToolStripItemPlacement[] placement = new ToolStripItemPlacement[this.Items.Count];
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Size proposedSize = new Size (0, Bounds.Height);
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int[] widths = new int[this.Items.Count];
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int total_width = 0;
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int toolstrip_width = DisplayRectangle.Width;
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int i = 0;
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int spring_count = 0;
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foreach (ToolStripItem tsi in this.Items) {
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overflow[i] = tsi.Overflow;
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widths[i] = tsi.GetPreferredSize (proposedSize).Width + tsi.Margin.Horizontal;
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placement[i] = tsi.Overflow == ToolStripItemOverflow.Always ? ToolStripItemPlacement.None : ToolStripItemPlacement.Main;
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placement[i] = tsi.Available && tsi.InternalVisible ? placement[i] : ToolStripItemPlacement.None;
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total_width += placement[i] == ToolStripItemPlacement.Main ? widths[i] : 0;
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if (tsi is ToolStripStatusLabel && (tsi as ToolStripStatusLabel).Spring)
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spring_count++;
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i++;
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}
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while (total_width > toolstrip_width) {
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bool removed_one = false;
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// Start at the right, removing Overflow.AsNeeded first
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for (int j = widths.Length - 1; j >= 0; j--)
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if (overflow[j] == ToolStripItemOverflow.AsNeeded && placement[j] == ToolStripItemPlacement.Main) {
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placement[j] = ToolStripItemPlacement.None;
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total_width -= widths[j];
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removed_one = true;
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break;
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}
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// If we didn't remove any AsNeeded ones, we have to start removing Never ones
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// These are not put on the Overflow, they are simply not shown
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if (!removed_one)
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for (int j = widths.Length - 1; j >= 0; j--)
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if (overflow[j] == ToolStripItemOverflow.Never && placement[j] == ToolStripItemPlacement.Main) {
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placement[j] = ToolStripItemPlacement.None;
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total_width -= widths[j];
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removed_one = true;
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break;
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}
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// There's nothing left to remove, break or we will loop forever
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if (!removed_one)
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break;
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}
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if (spring_count > 0) {
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int per_item = (toolstrip_width - total_width) / spring_count;
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i = 0;
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foreach (ToolStripItem tsi in this.Items) {
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if (tsi is ToolStripStatusLabel && (tsi as ToolStripStatusLabel).Spring)
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widths[i] += per_item;
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i++;
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}
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}
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i = 0;
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Point layout_pointer = new Point (this.DisplayRectangle.Left, this.DisplayRectangle.Top);
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int button_height = this.DisplayRectangle.Height;
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// Now we should know where everything goes, so lay everything out
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foreach (ToolStripItem tsi in this.Items) {
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tsi.SetPlacement (placement[i]);
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if (placement[i] == ToolStripItemPlacement.Main) {
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tsi.SetBounds (new Rectangle (layout_pointer.X + tsi.Margin.Left, layout_pointer.Y + tsi.Margin.Top, widths[i] - tsi.Margin.Horizontal, button_height - tsi.Margin.Vertical));
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layout_pointer.X += widths[i];
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}
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i++;
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}
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this.SetDisplayedItems ();
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}
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protected override void SetDisplayedItems ()
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{
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// Only clean the internal collection, without modifying Owner/Parent on items.
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this.displayed_items.ClearInternal ();
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foreach (ToolStripItem tsi in this.Items)
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if (tsi.Placement == ToolStripItemPlacement.Main && tsi.Available) {
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this.displayed_items.AddNoOwnerOrLayout (tsi);
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tsi.Parent = this;
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}
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}
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protected override void WndProc (ref Message m)
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{
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switch ((Msg)m.Msg) {
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// If the mouse is over the size grip, change the cursor
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case Msg.WM_MOUSEMOVE: {
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if (FromParamToMouseButtons ((int) m.WParam.ToInt32()) == MouseButtons.None) {
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Point p = new Point (LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()));
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if (this.SizingGrip && this.SizeGripBounds.Contains (p)) {
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this.Cursor = Cursors.SizeNWSE;
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return;
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} else
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this.Cursor = Cursors.Default;
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}
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break;
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}
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// If the left mouse button is pushed over the size grip,
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// send the WM a message to begin a window resize operation
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case Msg.WM_LBUTTONDOWN: {
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Point p = new Point (LowOrder ((int)m.LParam.ToInt32 ()), HighOrder ((int)m.LParam.ToInt32 ()));
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Form form = FindForm ();
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if (this.SizingGrip && this.SizeGripBounds.Contains (p)) {
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// For top level forms it's not enoug to send a NCLBUTTONDOWN message, so
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// we make a direct call to our XplatUI engine.
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if (!form.IsMdiChild)
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XplatUI.BeginMoveResize (form.Handle);
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XplatUI.SendMessage (form.Handle, Msg.WM_NCLBUTTONDOWN, (IntPtr) HitTest.HTBOTTOMRIGHT, IntPtr.Zero);
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return;
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}
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break;
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}
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}
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base.WndProc (ref m);
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}
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#endregion
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#region Public Events
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[Browsable (false)]
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public new event EventHandler PaddingChanged {
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add { base.PaddingChanged += value; }
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remove { base.PaddingChanged -= value; }
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}
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#endregion
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#region StatusStripAccessibleObject
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private class StatusStripAccessibleObject : AccessibleObject
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{
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}
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#endregion
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}
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}
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