private void CreateRegions()
{
var documentRegion = new DarkDockRegion(this, DarkDockArea.Document);
_regions.Add(DarkDockArea.Document, documentRegion);
var leftRegion = new DarkDockRegion(this, DarkDockArea.Left);
_regions.Add(DarkDockArea.Left, leftRegion);
var rightRegion = new DarkDockRegion(this, DarkDockArea.Right);
_regions.Add(DarkDockArea.Right, rightRegion);
var bottomRegion = new DarkDockRegion(this, DarkDockArea.Bottom);
_regions.Add(DarkDockArea.Bottom, bottomRegion);
// Add the regions in this order to force the bottom region to be positioned
// between the left and right regions properly.
Controls.Add(documentRegion);
Controls.Add(bottomRegion);
Controls.Add(leftRegion);
Controls.Add(rightRegion);
// Create tab index for intuitive tabbing order
documentRegion.TabIndex = 0;
rightRegion.TabIndex = 1;
bottomRegion.TabIndex = 2;
leftRegion.TabIndex = 3;
}
internal DockDropArea(DarkDockPanel dockPanel, DarkDockRegion region)
{
DockPanel = dockPanel;
DockRegion = region;
InsertType = DockInsertType.None;
BuildAreas();
}
internal DockDropArea(DarkDockPanel dockPanel, DarkDockRegion region)
{
DockPanel = dockPanel;
DockRegion = region;
InsertType = DockInsertType.None;
BuildAreas();
}
public DarkDockGroup(DarkDockPanel dockPanel, DarkDockRegion dockRegion, int order)
{
SetStyle(ControlStyles.OptimizedDoubleBuffer |
ControlStyles.ResizeRedraw |
ControlStyles.UserPaint, true);
DockPanel = dockPanel;
DockRegion = dockRegion;
DockArea = dockRegion.DockArea;
Order = order;
_tabArea = new DarkDockTabArea(DockArea);
DockPanel.ActiveContentChanged += DockPanel_ActiveContentChanged;
}
public DarkDockGroup(DarkDockPanel dockPanel, DarkDockRegion dockRegion, int order)
{
SetStyle(ControlStyles.OptimizedDoubleBuffer |
ControlStyles.ResizeRedraw |
ControlStyles.UserPaint, true);
DockPanel = dockPanel;
DockRegion = dockRegion;
DockArea = dockRegion.DockArea;
Order = order;
_tabArea = new DarkDockTabArea(DockArea);
DockPanel.ActiveContentChanged += DockPanel_ActiveContentChanged;
}
private void HandleDrag()
{
var location = Cursor.Position;
_insertType = DockInsertType.None;
_targetRegion = null;
_targetGroup = null;
// Check all region drop areas
foreach (var area in _regionDropAreas.Values)
{
if (area.DropArea.Contains(location))
{
_insertType = DockInsertType.None;
_targetRegion = area.DockRegion;
UpdateHighlightForm(area.HighlightArea);
return;
}
}
// Check all group drop areas
foreach (var collection in _groupDropAreas.Values)
{
var sameRegion = false;
var sameGroup = false;
var groupHasOtherContent = false;
if (collection.DropArea.DockGroup == _dragContent.DockGroup)
sameGroup = true;
if (collection.DropArea.DockGroup.DockRegion == _dragContent.DockRegion)
sameRegion = true;
if (_dragContent.DockGroup.ContentCount > 1)
groupHasOtherContent = true;
// If we're hovering over the group itself, only allow inserting before/after if multiple content is tabbed.
if (!sameGroup || groupHasOtherContent)
{
var skipBefore = false;
var skipAfter = false;
// Inserting before/after other content might cause the content to be dropped on to its own location.
// Check if the group above/below the hovered group contains our drag content.
if (sameRegion && !groupHasOtherContent)
{
if (collection.InsertBeforeArea.DockGroup.Order == _dragContent.DockGroup.Order + 1)
skipBefore = true;
if (collection.InsertAfterArea.DockGroup.Order == _dragContent.DockGroup.Order - 1)
skipAfter = true;
}
if (!skipBefore)
{
if (collection.InsertBeforeArea.DropArea.Contains(location))
{
_insertType = DockInsertType.Before;
_targetGroup = collection.InsertBeforeArea.DockGroup;
UpdateHighlightForm(collection.InsertBeforeArea.HighlightArea);
return;
}
}
if (!skipAfter)
{
if (collection.InsertAfterArea.DropArea.Contains(location))
{
_insertType = DockInsertType.After;
_targetGroup = collection.InsertAfterArea.DockGroup;
UpdateHighlightForm(collection.InsertAfterArea.HighlightArea);
return;
}
}
}
// Don't allow content to be dragged on to itself
if (!sameGroup)
{
if (collection.DropArea.DropArea.Contains(location))
{
_insertType = DockInsertType.None;
_targetGroup = collection.DropArea.DockGroup;
UpdateHighlightForm(collection.DropArea.HighlightArea);
return;
}
}
}
// Not hovering over anything - hide the highlight
if (_highlightForm.Visible)
_highlightForm.Hide();
// Show we can't drag here
Cursor.Current = Cursors.No;
}
private void CreateRegions()
{
var documentRegion = new DarkDockRegion(this, DarkDockArea.Document);
_regions.Add(DarkDockArea.Document, documentRegion);
var leftRegion = new DarkDockRegion(this, DarkDockArea.Left);
_regions.Add(DarkDockArea.Left, leftRegion);
var rightRegion = new DarkDockRegion(this, DarkDockArea.Right);
_regions.Add(DarkDockArea.Right, rightRegion);
var bottomRegion = new DarkDockRegion(this, DarkDockArea.Bottom);
_regions.Add(DarkDockArea.Bottom, bottomRegion);
// Add the regions in this order to force the bottom region to be positioned
// between the left and right regions properly.
Controls.Add(documentRegion);
Controls.Add(bottomRegion);
Controls.Add(leftRegion);
Controls.Add(rightRegion);
// Create tab index for intuitive tabbing order
documentRegion.TabIndex = 0;
rightRegion.TabIndex = 1;
bottomRegion.TabIndex = 2;
leftRegion.TabIndex = 3;
}