public bool CanResize(ResizeBar bar)
{
// Cannot resize when in prominent mode
if (!_tabbedGroups.ResizeBarLock && (_tabbedGroups.ProminentLeaf == null))
{
// Find position of this ResizeBar in the Controls collection
int barIndex = _control.Controls.IndexOf(bar);
// Convert from control to children indexing
int beforeIndex = (barIndex - 1) / 2;
TabGroupBase before = _children[beforeIndex];
TabGroupBase after = _children[beforeIndex + 1];
// If groups on both sides have no space then cannot resize there relative positions
if (((before.Space <= 0m) && (after.Space <= 0m)))
{
return(false);
}
else
{
return(true);
}
}
else
{
// Must exit prominent mode before resize can occur
return(false);
}
}
protected void AllocateMandatorySizes(ref int[] positions, ref int barSpace, ref int space)
{
// Process each control
for (int index = 0, child = 0; index < _control.Controls.Count; index++)
{
ResizeBar bar = _control.Controls[index] as ResizeBar;
// Is this a resize bar control?
if (bar != null)
{
// Length needed is dependant on direction
positions[index] = bar.Length;
// Add up how much space was allocated to ResizeBars
barSpace += positions[index];
}
else
{
Size minimal = _children[child++].MinimumSize;
// Length needed is depends on direction
if (_direction == Direction.Vertical)
{
positions[index] = minimal.Height;
}
else
{
positions[index] = minimal.Width;
}
}
// Reduce available space by that just allocated
space -= positions[index];
}
}
protected TabGroupBase Insert(int index, TabGroupBase group)
{
// Range check index
if (index < 0)
{
throw new ArgumentOutOfRangeException("index", index, "Insert index must be at least 0");
}
if (index >= _children.Count)
{
throw new ArgumentOutOfRangeException("index", index, "Cannot insert after end of current entries");
}
// Remember reference
_children.Insert(index, group);
// Create a resizing bar
ResizeBar bar = new ResizeBar(_direction, this);
// Append resize bar between existing entries and new entry
_control.Controls.Add(bar);
// Append new group control
_control.Controls.Add(group.GroupControl);
// Inserting at start of collection?
if (index == 0)
{
// Reposition the bar and group to start of collection
_control.Controls.SetChildIndex(bar, 0);
_control.Controls.SetChildIndex(group.GroupControl, 0);
}
else
{
// Find correct index taking into account number of resize bars
int pos = index * 2 - 1;
// Reposition the bar and Window to correct relative ordering
_control.Controls.SetChildIndex(bar, pos++);
_control.Controls.SetChildIndex(group.GroupControl, pos);
}
// Allocate space for the new child
AllocateSpace(group);
// Update child layout to reflect new proportional spacing values
RepositionChildren();
// Mark layout as dirty
if (_tabbedGroups.AutoCalculateDirty)
{
_tabbedGroups.Dirty = true;
}
return(group);
}
public void EndResizeOperation(ResizeBar bar, int delta)
{
// Find position of this ResizeBar in the Controls collection
int barIndex = _control.Controls.IndexOf(bar);
// Convert from control to children indexing
int beforeIndex = (barIndex - 1) / 2;
// The Window relating to this bar must be the one before it in the collection
TabGroupBase before = _children[beforeIndex];
// Is the Window being expanded
DeltaGroupSpace(before, delta);
}
protected TabGroupBase Add(TabGroupBase group)
{
// Remember reference
_children.Add(group);
// First group added to sequence?
if (_children.Count == 1)
{
// Add new child control
_control.Controls.Add(group.GroupControl);
}
else
{
// Create a resizing bar
ResizeBar bar = new ResizeBar(_direction, this);
// Append resize bar between existing entries and new entry
_control.Controls.Add(bar);
// Append new group control
_control.Controls.Add(group.GroupControl);
}
if (!_tabbedGroups.Initializing)
{
// Allocate space for the new child
AllocateSpace(group);
// Update child layout to reflect new proportional spacing values
RepositionChildren();
}
// Mark layout as dirty
if (_tabbedGroups.AutoCalculateDirty)
{
_tabbedGroups.Dirty = true;
}
return(group);
}
public bool StartResizeOperation(ResizeBar bar, ref Rectangle screenBoundary)
{
// Find position of this ResizeBar in the Controls collection
int barIndex = _control.Controls.IndexOf(bar);
// Convert from control to children indexing
int beforeIndex = (barIndex - 1) / 2;
// Get groups before and after the resize bar
TabGroupBase before = _children[beforeIndex];
TabGroupBase after = _children[beforeIndex + 1];
// Resizing boundary is defaulted to whole control area
screenBoundary = _control.RectangleToScreen(_control.ClientRectangle);
// Find screen rectangle for the groups either side of the bar
Rectangle rectBefore = before.GroupControl.RectangleToScreen(before.GroupControl.ClientRectangle);
Rectangle rectAfter = after.GroupControl.RectangleToScreen(after.GroupControl.ClientRectangle);
// Reduce the boundary in the appropriate direction
if (_direction == Direction.Vertical)
{
screenBoundary.Y = rectBefore.Y + before.MinimumSize.Height;
screenBoundary.Height -= screenBoundary.Bottom - rectAfter.Bottom;
screenBoundary.Height -= after.MinimumSize.Height;
}
else
{
screenBoundary.X = rectBefore.X + before.MinimumSize.Width;
screenBoundary.Width -= screenBoundary.Right - rectAfter.Right;
screenBoundary.Width -= after.MinimumSize.Width;
}
// Allow resize operation to occur
return(true);
}
internal void Replace(TabGroupBase orig, TabGroupBase replace)
{
// Find array position of old item
int origPos = _children.IndexOf(orig);
// Transfer across the space occupied
replace.RealSpace = orig.RealSpace;
// Is this the only Window entry?
if (_children.Count == 1)
{
// Remove Window from appearance
// Use helper method to circumvent form Close bug
ControlHelper.RemoveAt(_control.Controls, 0);
}
else
{
int pos = 0;
// Calculate position of Window to remove
if (origPos != 0)
{
pos = origPos * 2 - 1;
}
// Remove Window and bar
// Use helper method to circumvent form Close bug
ControlHelper.RemoveAt(_control.Controls, pos);
ControlHelper.RemoveAt(_control.Controls, pos);
}
// Inserting at start of collection?
if (origPos == 0)
{
if (_children.Count > 1)
{
// Create a resizing bar
ResizeBar bar = new ResizeBar(_direction, this);
// Append resize bar between existing entries and new entry
_control.Controls.Add(bar);
// Reposition the bar and group to start of collection
_control.Controls.SetChildIndex(bar, 0);
}
// Append new group control
_control.Controls.Add(replace.GroupControl);
// Reposition the bar and group to start of collection
_control.Controls.SetChildIndex(replace.GroupControl, 0);
}
else
{
// Create a resizing bar
ResizeBar bar = new ResizeBar(_direction, this);
// Append resize bar between existing entries and new entry
_control.Controls.Add(bar);
// Append new group control
_control.Controls.Add(replace.GroupControl);
// Find correct index taking into account number of resize bars
int pos = origPos * 2 - 1;
// Reposition the bar and Window to correct relative ordering
_control.Controls.SetChildIndex(bar, pos++);
_control.Controls.SetChildIndex(replace.GroupControl, pos);
}
// Update parentage
replace.SetParent(this);
// Replace the entry
_children[origPos] = replace;
// Update child layout to reflect new proportional spacing values
RepositionChildren();
// Mark layout as dirty
if (_tabbedGroups.AutoCalculateDirty)
{
_tabbedGroups.Dirty = true;
}
}
protected void CompactReduceSameDirection(TabbedGroups.CompactFlags flags)
{
bool changed = false;
// Should we check for same direction sub-sequences?
if ((flags & Controls.TabbedGroups.CompactFlags.ReduceSameDirection) != 0)
{
int count = _children.Count;
for (int index = 0; index < count; index++)
{
// Only interested in sequence entries
if (_children[index].IsSequence)
{
TabGroupSequence tgs = (TabGroupSequence)_children[index];
// Does it run in same direction as ourself?
if (_direction == tgs.Direction)
{
// Remember how much space the base entry occupies
Decimal temp = tgs.RealSpace;
// Find the child control to be replaced
int childPos = _control.Controls.IndexOf(tgs.GroupControl);
// Need to remove a resize bar before the control?
if (childPos > 0)
{
ControlHelper.RemoveAt(_control.Controls, childPos);
}
// Remove the actual control
ControlHelper.RemoveAt(_control.Controls, childPos);
// Remove the intermediate group
_children.RemoveAt(index);
// Reflect change in size
count--;
Decimal totalAllocated = 0m;
// Add in each sub group in turn
int subCount = tgs.Count;
bool firstInsert = true;
for (int subIndex = 0; subIndex < subCount; subIndex++)
{
TabGroupBase tgb = tgs[subIndex];
// What percentage of original space did it have?
Decimal orig = tgb.RealSpace;
// Give it the same proportion of new space
Decimal update = Decimal.Round(temp / 100 * orig, SPACE_PRECISION);
// Keep total actually allocated
totalAllocated += update;
// Use new proportion
tgb.RealSpace = update;
// Update parentage
tgb.SetParent(this);
// Does new child control need a resizing bar?
if ((childPos > 0) && !firstInsert)
{
// Create a resizing bar
ResizeBar bar = new ResizeBar(_direction, this);
_control.Controls.Add(bar);
_control.Controls.SetChildIndex(bar, childPos++);
}
// Add new child control in its place
_control.Controls.Add(tgb.GroupControl);
_control.Controls.SetChildIndex(tgb.GroupControl, childPos++);
// Insert at current position
_children.Insert(index, tgb);
// Adjust variables to reflect increased size
index++;
count++;
firstInsert = false;
}
// Assign any remainder to last group
_children[index - 1].RealSpace += temp - totalAllocated;
// Need controls repositioned
changed = true;
// Mark layout as dirty
if (_tabbedGroups.AutoCalculateDirty)
{
_tabbedGroups.Dirty = true;
}
}
}
}
}
// Change in contents requires entries to be repositioned
if (changed)
{
RepositionChildren();
}
}
protected void RepositionChildren(ref int[] positions, Rectangle clientRect, int delta)
{
// Process each control
for (int index = 0; index < _control.Controls.Count; index++)
{
// Delta length for this particular control
int newDelta = positions[index];
ResizeBar bar = _control.Controls[index] as ResizeBar;
if (bar != null)
{
if (_direction == Direction.Vertical)
{
// Set new position
bar.Location = new Point(clientRect.X, delta);
bar.Width = clientRect.Width;
bar.Height = newDelta;
// Move delta down to next position
delta += newDelta;
}
else
{
// Set new position
bar.Location = new Point(delta, clientRect.Y);
bar.Height = clientRect.Height;
bar.Width = newDelta;
// Move delta across to next position
delta += newDelta;
}
}
else
{
Control c = _control.Controls[index];
if (c != null)
{
if (newDelta == 0)
{
c.Hide();
}
else
{
// Set new position/size based on direction
if (_direction == Direction.Vertical)
{
c.Location = new Point(clientRect.X, delta);
c.Width = clientRect.Width;
c.Height = newDelta;
}
else
{
c.Location = new Point(delta, clientRect.Y);
c.Height = clientRect.Height;
c.Width = newDelta;
}
if (!c.Visible)
{
c.Show();
}
// Move delta to next position
delta += newDelta;
}
}
}
}
}