//
// ToolStripSplitStackLayout.cs
//
// 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) 2006 Jonathan Pobst
//
// Authors:
// Jonathan Pobst (monkey@jpobst.com)
//
#if NET_2_0
using System;
using System.Drawing;
using System.Windows.Forms.Layout;
namespace System.Windows.Forms{
class ToolStripSplitStackLayout : LayoutEngine
{
public override bool Layout (object container, LayoutEventArgs args)
{
if (container is ToolStrip)
{
ToolStrip ts = (ToolStrip)container;
if (ts.Items == null)
return false;
Rectangle ts_rect = ts.DisplayRectangle;
if (ts.Orientation == Orientation.Horizontal)
LayoutHorizontalToolStrip (ts, ts_rect);
else
LayoutVerticalToolStrip (ts, ts_rect);
return false;
} else {
ToolStripContentPanel ts = (ToolStripContentPanel)container;
int x = ts.DisplayRectangle.Left;
int y = ts.DisplayRectangle.Top;
foreach (ToolStrip tsi in ts.Controls) {
Rectangle new_bounds = new Rectangle ();
x += tsi.Margin.Left;
new_bounds.Location = new Point (x, y + tsi.Margin.Top);
new_bounds.Height = ts.DisplayRectangle.Height - tsi.Margin.Vertical;
new_bounds.Width = tsi.GetToolStripPreferredSize (new Size (0, new_bounds.Height)).Width;
tsi.Width = new_bounds.Width + 12;
x += new_bounds.Width + tsi.Margin.Right;
}
}
return false;
}
private void LayoutHorizontalToolStrip (ToolStrip ts, Rectangle bounds)
{
//if (!ts.Visible) return;
ToolStripItemOverflow[] overflow = new ToolStripItemOverflow[ts.Items.Count];
ToolStripItemPlacement[] placement = new ToolStripItemPlacement[ts.Items.Count];
Size proposedSize = new Size (0, bounds.Height);
int[] widths = new int[ts.Items.Count];
int total_width = 0;
int toolstrip_width = bounds.Width;
int i = 0;
bool can_overflow = ts.CanOverflow & !(ts is MenuStrip) & !(ts is StatusStrip);
bool need_overflow = false;
foreach (ToolStripItem tsi in ts.Items) {
overflow[i] = tsi.Overflow;
placement[i] = tsi.Overflow == ToolStripItemOverflow.Always ? ToolStripItemPlacement.Overflow : ToolStripItemPlacement.Main;
widths[i] = tsi.GetPreferredSize (proposedSize).Width + tsi.Margin.Horizontal;
if (!tsi.Available)
placement[i] = ToolStripItemPlacement.None;
total_width += placement[i] == ToolStripItemPlacement.Main ? widths[i] : 0;
if (placement[i] == ToolStripItemPlacement.Overflow)
need_overflow = true;
i++;
}
// This is needed for a button set to Overflow = Always
if (need_overflow) {
ts.OverflowButton.Visible = true;
ts.OverflowButton.SetBounds (new Rectangle (ts.Width - 16, 0, 16, ts.Height));
toolstrip_width -= ts.OverflowButton.Width;
} else
ts.OverflowButton.Visible = false;
while (total_width > toolstrip_width) {
// If we can overflow, get our overflow button setup, and subtract it's width
// from our available width
if (can_overflow && !ts.OverflowButton.Visible) {
ts.OverflowButton.Visible = true;
ts.OverflowButton.SetBounds (new Rectangle (ts.Width - 16, 0, 16, ts.Height));
toolstrip_width -= ts.OverflowButton.Width;
}
bool removed_one = false;
// Start at the right, removing Overflow.AsNeeded first
for (int j = widths.Length - 1; j >= 0; j--)
if (overflow[j] == ToolStripItemOverflow.AsNeeded && placement[j] == ToolStripItemPlacement.Main) {
placement[j] = ToolStripItemPlacement.Overflow;
total_width -= widths[j];
removed_one = true;
break;
}
// If we didn't remove any AsNeeded ones, we have to start removing Never ones
// These are not put on the Overflow, they are simply not shown
if (!removed_one)
for (int j = widths.Length - 1; j >= 0; j--)
if (overflow[j] == ToolStripItemOverflow.Never && placement[j] == ToolStripItemPlacement.Main) {
placement[j] = ToolStripItemPlacement.None;
total_width -= widths[j];
removed_one = true;
break;
}
// There's nothing left to remove, break or we will loop forever
if (!removed_one)
break;
}
i = 0;
Point start_layout_pointer = new Point (ts.DisplayRectangle.Left, ts.DisplayRectangle.Top);
Point end_layout_pointer = new Point (ts.DisplayRectangle.Right, ts.DisplayRectangle.Top);
int button_height = ts.DisplayRectangle.Height;
// Now we should know where everything goes, so lay everything out
foreach (ToolStripItem tsi in ts.Items) {
tsi.SetPlacement (placement[i]);
if (placement[i] == ToolStripItemPlacement.Main) {
if (tsi.Alignment == ToolStripItemAlignment.Left) {
tsi.SetBounds (new Rectangle (start_layout_pointer.X + tsi.Margin.Left, start_layout_pointer.Y + tsi.Margin.Top, widths[i] - tsi.Margin.Horizontal, button_height - tsi.Margin.Vertical));
start_layout_pointer.X += widths[i];
} else {
tsi.SetBounds (new Rectangle (end_layout_pointer.X - tsi.Margin.Right - tsi.Width, end_layout_pointer.Y + tsi.Margin.Top, widths[i] - tsi.Margin.Horizontal, button_height - tsi.Margin.Vertical));
end_layout_pointer.X -= widths[i];
}
}
i++;
}
}
private void LayoutVerticalToolStrip (ToolStrip ts, Rectangle bounds)
{
if (!ts.Visible) return;
ToolStripItemOverflow[] overflow = new ToolStripItemOverflow[ts.Items.Count];
ToolStripItemPlacement[] placement = new ToolStripItemPlacement[ts.Items.Count];
Size proposedSize = new Size (bounds.Width, 0);
int[] heights = new int[ts.Items.Count];
int total_height = 0;
int toolstrip_height = bounds.Height;
int i = 0;
bool can_overflow = ts.CanOverflow & !(ts is MenuStrip) & !(ts is StatusStrip);
foreach (ToolStripItem tsi in ts.Items) {
overflow[i] = tsi.Overflow;
placement[i] = tsi.Overflow == ToolStripItemOverflow.Always ? ToolStripItemPlacement.Overflow : ToolStripItemPlacement.Main;
heights[i] = tsi.GetPreferredSize (proposedSize).Height + tsi.Margin.Vertical;
if (!tsi.Available)
placement[i] = ToolStripItemPlacement.None;
total_height += placement[i] == ToolStripItemPlacement.Main ? heights[i] : 0;
i++;
}
ts.OverflowButton.Visible = false;
while (total_height > toolstrip_height) {
// If we can overflow, get our overflow button setup, and subtract it's width
// from our available width
if (can_overflow && !ts.OverflowButton.Visible) {
ts.OverflowButton.Visible = true;
ts.OverflowButton.SetBounds (new Rectangle (0, ts.Height - 16, ts.Width, 16));
toolstrip_height -= ts.OverflowButton.Height;
}
bool removed_one = false;
// Start at the right, removing Overflow.AsNeeded first
for (int j = heights.Length - 1; j >= 0; j--)
if (overflow[j] == ToolStripItemOverflow.AsNeeded && placement[j] == ToolStripItemPlacement.Main) {
placement[j] = ToolStripItemPlacement.Overflow;
total_height -= heights[j];
removed_one = true;
break;
}
// If we didn't remove any AsNeeded ones, we have to start removing Never ones
// These are not put on the Overflow, they are simply not shown
if (!removed_one)
for (int j = heights.Length - 1; j >= 0; j--)
if (overflow[j] == ToolStripItemOverflow.Never && placement[j] == ToolStripItemPlacement.Main) {
placement[j] = ToolStripItemPlacement.None;
total_height -= heights[j];
removed_one = true;
break;
}
// There's nothing left to remove, break or we will loop forever
if (!removed_one)
break;
}
i = 0;
Point start_layout_pointer = new Point (ts.DisplayRectangle.Left, ts.DisplayRectangle.Top);
Point end_layout_pointer = new Point (ts.DisplayRectangle.Left, ts.DisplayRectangle.Bottom);
int button_width = ts.DisplayRectangle.Width;
// Now we should know where everything goes, so lay everything out
foreach (ToolStripItem tsi in ts.Items) {
tsi.SetPlacement (placement[i]);
if (placement[i] == ToolStripItemPlacement.Main) {
if (tsi.Alignment == ToolStripItemAlignment.Left) {
tsi.SetBounds (new Rectangle (start_layout_pointer.X + tsi.Margin.Left, start_layout_pointer.Y + tsi.Margin.Top, button_width - tsi.Margin.Horizontal, heights[i] - tsi.Margin.Vertical));
start_layout_pointer.Y += heights[i];
} else {
tsi.SetBounds (new Rectangle (end_layout_pointer.X + tsi.Margin.Left, end_layout_pointer.Y - tsi.Margin.Bottom - tsi.Height, button_width - tsi.Margin.Horizontal, heights[i] - tsi.Margin.Vertical));
start_layout_pointer.Y += heights[i];
}
}
i++;
}
}
}
}
#endif
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