/// <summary>
/// Propagates a request for drag targets down the hierarchy of docking elements.
/// </summary>
/// <param name="floatingWindow">Reference to window being dragged.</param>
/// <param name="dragData">Set of pages being dragged.</param>
/// <param name="targets">Collection of drag targets.</param>
public override void PropogateDragTargets(KryptonFloatingWindow floatingWindow,
PageDragEndData dragData,
DragTargetList targets)
{
// Create list of the pages that are allowed to be dropped into this navigator
KryptonPageCollection pages = new();
foreach (KryptonPage page in dragData.Pages.Where(static page => page.AreFlagsSet(KryptonPageFlags.DockingAllowNavigator)))
/// <summary>
/// Initialize a new instance of the DragManager class.
/// </summary>
public DragManager()
{
_redirector = new PaletteRedirect();
StateCommon = new PaletteDragDrop(null, null);
_paletteMode = PaletteMode.Global;
DragTargetProviders = new DragTargetProviderCollection();
_dragTargets = new DragTargetList();
_documentCursor = false;
}
/// <summary>
/// Add a list of drag targets from the provided interface.
/// </summary>
/// <param name="provider">Interface reference.</param>
/// <param name="dragEndData">Pages data being dragged.</param>
public void AddRange(IDragTargetProvider provider, PageDragEndData dragEndData)
{
DragTargetList targets = provider?.GenerateDragTargets(dragEndData);
if ((targets != null) && (targets.Count > 0))
{
AddRange(targets);
}
}
/// <summary>
/// Generate a list of drag targets that are relevant to the provided end data.
/// </summary>
/// <param name="dragEndData">Pages data being dragged.</param>
/// <returns>List of drag targets.</returns>
public DragTargetList GenerateDragTargets(PageDragEndData dragEndData)
{
DragTargetList targets = new DragTargetList();
// Generate target for the entire navigator client area
targets.Add(new DragTargetTreeViewTransfer(RectangleToScreen(ClientRectangle), this));
return(targets);
}
/// <summary>
/// Propogates a request for drag targets down the hierarchy of docking elements.
/// </summary>
/// <param name="floatingWindow">Reference to window being dragged.</param>
/// <param name="dragData">Set of pages being dragged.</param>
/// <param name="targets">Collection of drag targets.</param>
public virtual void PropogateDragTargets(KryptonFloatingWindow floatingWindow,
PageDragEndData dragData,
DragTargetList targets)
{
// Propogate the request to all child elements
foreach (IDockingElement child in this)
{
child.PropogateDragTargets(floatingWindow, dragData, targets);
}
}
/// <summary>
/// Propogates a request for drag targets down the hierarchy of docking elements.
/// </summary>
/// <param name="floatingWindow">Reference to window being dragged.</param>
/// <param name="dragData">Set of pages being dragged.</param>
/// <param name="targets">Collection of drag targets.</param>
public override void PropogateDragTargets(KryptonFloatingWindow floatingWindow,
PageDragEndData dragData,
DragTargetList targets)
{
// Can only generate targets for a floating window that is actually visible and not the one being dragged
if (FloatingWindow.Visible && (floatingWindow != FloatingWindow))
{
base.PropogateDragTargets(floatingWindow, dragData, targets);
}
}
/// <summary>
/// Generate a list of drag targets that are relevant to the provided end data.
/// </summary>
/// <param name="dragEndData">Pages data being dragged.</param>
/// <returns>List of drag targets.</returns>
public DragTargetList GenerateDragTargets(PageDragEndData dragEndData)
{
DragTargetList targets = new DragTargetList();
// Generate the set of targets from the element hierarchy
_manager.PropogateDragTargets(_floatingWindow, dragEndData, targets);
// Must have at least one target
if (targets.Count == 0)
targets.Add(new DragTargetNull());
return targets;
}
/// <summary>
/// Generate a list of drag targets that are relevant to the provided end data.
/// </summary>
/// <param name="dragEndData">Pages data being dragged.</param>
/// <returns>List of drag targets.</returns>
public DragTargetList GenerateDragTargets(PageDragEndData dragEndData)
{
DragTargetList targets = new DragTargetList();
// Generate the set of targets from the element hierarchy
_manager.PropogateDragTargets(_floatingWindow, dragEndData, targets);
// Must have at least one target
if (targets.Count == 0)
{
targets.Add(new DragTargetNull());
}
return(targets);
}
/// <summary>
/// Called to initialize the implementation when dragging starts.
/// </summary>
/// <param name="paletteDragDrop">Drawing palette.</param>
/// <param name="renderer">Drawing renderer.</param>
/// <param name="pageDragEndData">Drag data associated with drag operation.</param>
/// <param name="dragTargets">List of all drag targets.</param>
public virtual void Start(IPaletteDragDrop paletteDragDrop,
IRenderer renderer,
PageDragEndData pageDragEndData,
DragTargetList dragTargets)
{
Debug.Assert(paletteDragDrop != null);
Debug.Assert(renderer != null);
Debug.Assert(pageDragEndData != null);
Debug.Assert(dragTargets != null);
PaletteDragDrop = paletteDragDrop;
Renderer = renderer;
PageDragEndData = pageDragEndData;
DragTargets = dragTargets;
}
/// <summary>
/// Called to initialize the implementation when dragging starts.
/// </summary>
/// <param name="paletteDragDrop">Drawing palette.</param>
/// <param name="renderer">Drawing renderer.</param>
/// <param name="pageDragEndData">Drag data associated with drag operation.</param>
/// <param name="dragTargets">List of all drag targets.</param>
public override void Start(IPaletteDragDrop paletteDragDrop,
IRenderer renderer,
PageDragEndData pageDragEndData,
DragTargetList dragTargets)
{
base.Start(paletteDragDrop, renderer, pageDragEndData, dragTargets);
if (_solid == null)
{
// Create and show a window without it taking focus
_solid = new DropSolidWindow(PaletteDragDrop, Renderer);
_solid.SetBounds(0, 0, 1, 1, BoundsSpecified.All);
_solid.ShowWithoutActivate();
_solid.Refresh();
}
}
/// <summary>
/// Called to initialize the implementation when dragging starts.
/// </summary>
/// <param name="paletteDragDrop">Drawing palette.</param>
/// <param name="renderer">Drawing renderer.</param>
/// <param name="pageDragEndData">Drag data associated with drag operation.</param>
/// <param name="dragTargets">List of all drag targets.</param>
public override void Start(IPaletteDragDrop paletteDragDrop,
IRenderer renderer,
PageDragEndData pageDragEndData,
DragTargetList dragTargets)
{
base.Start(paletteDragDrop, renderer, pageDragEndData, dragTargets);
if (_solid == null)
{
// Create and show a window without it taking focus
_solid = new DropSolidWindow(PaletteDragDrop, Renderer);
_solid.SetBounds(0, 0, 1, 1, BoundsSpecified.All);
_solid.ShowWithoutActivate();
_solid.Refresh();
}
}
/// <summary>
/// Propagates a request for drag targets down the hierarchy of docking elements.
/// </summary>
/// <param name="floatingWindow">Reference to window being dragged.</param>
/// <param name="dragData">Set of pages being dragged.</param>
/// <param name="targets">Collection of drag targets.</param>
public override void PropogateDragTargets(KryptonFloatingWindow floatingWindow,
PageDragEndData dragData,
DragTargetList targets)
{
// Create list of the pages that are allowed to be dropped into this workspace
KryptonPageCollection pages = new KryptonPageCollection();
foreach (KryptonPage page in dragData.Pages)
{
if (page.AreFlagsSet(KryptonPageFlags.DockingAllowWorkspace))
{
pages.Add(page);
}
}
// Do we have any pages left for dragging?
if (pages.Count > 0)
{
DragTargetList workspaceTargets = DockableWorkspaceControl.GenerateDragTargets(new PageDragEndData(this, pages), KryptonPageFlags.DockingAllowWorkspace);
targets.AddRange(workspaceTargets.ToArray());
}
}
/// <summary>
/// Release unmanaged and optionally managed resources.
/// </summary>
/// <param name="disposing">Called from Dispose method.</param>
protected virtual void Dispose(bool disposing)
{
// If called from explicit call to Dispose
if (disposing)
{
// No need to call destructor once dispose has occured
GC.SuppressFinalize(this);
_pageDragEndData = null;
_dragTargets = null;
}
// Mark as disposed
_disposed = true;
}
/// <summary>
/// Generate a list of drag targets that are relevant to the provided end data.
/// </summary>
/// <param name="dragEndData">Pages data being dragged.</param>
/// <param name="allowFlags">Only drop pages that have one of these flags set.</param>
/// <returns>List of drag targets.</returns>
public virtual DragTargetList GenerateDragTargets(PageDragEndData dragEndData, KryptonPageFlags allowFlags)
{
DragTargetList targets = new DragTargetList();
// Generate target for the entire navigator client area
targets.Add(new DragTargetNavigatorTransfer(RectangleToScreen(ClientRectangle), this, allowFlags));
return targets;
}
/// <summary>
/// Propogates a request for drag targets down the hierarchy of docking elements.
/// </summary>
/// <param name="floatingWindow">Reference to window being dragged.</param>
/// <param name="dragData">Set of pages being dragged.</param>
/// <param name="targets">Collection of drag targets.</param>
public override void PropogateDragTargets(KryptonFloatingWindow floatingWindow,
PageDragEndData dragData,
DragTargetList targets)
{
// Create a list of pages that are allowed to be transferred into a dockspace
List <KryptonPage> transferPages = new List <KryptonPage>();
foreach (KryptonPage page in dragData.Pages)
{
if (page.AreFlagsSet(KryptonPageFlags.DockingAllowDocked))
{
transferPages.Add(page);
}
}
// Only generate targets if we have some valid pages to transfer
if (transferPages.Count > 0)
{
// Generate targets for the four control edges
Rectangle screenRect = Control.RectangleToScreen(Control.ClientRectangle);
Rectangle[] rectsDraw = SubdivideRectangle(screenRect, 3, int.MaxValue);
Rectangle[] rectsHot = SubdivideRectangle(screenRect, 10, 20);
// Must insert at start of target list as they are higher priority than cell targets
targets.Add(new DragTargetControlEdge(screenRect, rectsHot[0], rectsDraw[0], DragTargetHint.EdgeLeft | DragTargetHint.ExcludeCluster, this, KryptonPageFlags.DockingAllowDocked, true));
targets.Add(new DragTargetControlEdge(screenRect, rectsHot[1], rectsDraw[1], DragTargetHint.EdgeRight | DragTargetHint.ExcludeCluster, this, KryptonPageFlags.DockingAllowDocked, true));
targets.Add(new DragTargetControlEdge(screenRect, rectsHot[2], rectsDraw[2], DragTargetHint.EdgeTop | DragTargetHint.ExcludeCluster, this, KryptonPageFlags.DockingAllowDocked, true));
targets.Add(new DragTargetControlEdge(screenRect, rectsHot[3], rectsDraw[3], DragTargetHint.EdgeBottom | DragTargetHint.ExcludeCluster, this, KryptonPageFlags.DockingAllowDocked, true));
// If we have no designated inner element when we have to decide if we can place edge drag drop targets based on the
// available space at the center of the control after taking into account any edge docked controls already in place.
if (_innerElement == null)
{
// Find the inner rectangle after taking docked controls into account
Size tl = Size.Empty;
Size br = Control.ClientSize;
foreach (Control c in Control.Controls)
{
if (c.Visible)
{
switch (c.Dock)
{
case DockStyle.Left:
tl.Width = Math.Max(tl.Width, c.Right);
break;
case DockStyle.Right:
br.Width = Math.Min(br.Width, c.Left);
break;
case DockStyle.Top:
tl.Height = Math.Max(tl.Height, c.Bottom);
break;
case DockStyle.Bottom:
br.Height = Math.Min(br.Height, c.Top);
break;
}
}
}
// If there is inner space available
Rectangle innerRect = new Rectangle(tl.Width, tl.Height, br.Width - tl.Width, br.Height - tl.Height);
if ((innerRect.Width > 0) && (innerRect.Height > 0))
{
Rectangle innerScreenRect = Control.RectangleToScreen(innerRect);
Rectangle[] innerRectsDraw = SubdivideRectangle(innerScreenRect, 3, int.MaxValue);
Rectangle[] innerRectsHot = SubdivideRectangle(innerScreenRect, 10, 20);
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[0], innerRectsDraw[0], DragTargetHint.EdgeLeft, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[1], innerRectsDraw[1], DragTargetHint.EdgeRight, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[2], innerRectsDraw[2], DragTargetHint.EdgeTop, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[3], innerRectsDraw[3], DragTargetHint.EdgeBottom, this, KryptonPageFlags.DockingAllowDocked, false));
}
}
else if (_innerElement is KryptonDockingNavigator)
{
KryptonDockingNavigator dockingNavigator = (KryptonDockingNavigator)_innerElement;
// If there is inner space available
Rectangle innerScreenRect = dockingNavigator.DockableNavigatorControl.RectangleToScreen(dockingNavigator.DockableNavigatorControl.ClientRectangle);
if ((innerScreenRect.Width > 0) && (innerScreenRect.Height > 0))
{
Rectangle[] innerRectsDraw = SubdivideRectangle(innerScreenRect, 3, int.MaxValue);
Rectangle[] innerRectsHot = SubdivideRectangle(innerScreenRect, 10, 20);
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[0], innerRectsDraw[0], DragTargetHint.EdgeLeft, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[1], innerRectsDraw[1], DragTargetHint.EdgeRight, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[2], innerRectsDraw[2], DragTargetHint.EdgeTop, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[3], innerRectsDraw[3], DragTargetHint.EdgeBottom, this, KryptonPageFlags.DockingAllowDocked, false));
}
}
// Let base class generate targets for contained elements
base.PropogateDragTargets(floatingWindow, dragData, targets);
}
}
/// <summary>
/// Propogates a request for drag targets down the hierarchy of docking elements.
/// </summary>
/// <param name="floatingWindow">Reference to window being dragged.</param>
/// <param name="dragData">Set of pages being dragged.</param>
/// <param name="targets">Collection of drag targets.</param>
public override void PropogateDragTargets(KryptonFloatingWindow floatingWindow,
PageDragEndData dragData,
DragTargetList targets)
{
if (DockspaceControl.CellVisibleCount > 0)
{
// Create list of the pages that are allowed to be dropped into this dockspace
KryptonPageCollection pages = new KryptonPageCollection();
foreach (KryptonPage page in dragData.Pages)
if (page.AreFlagsSet(KryptonPageFlags.DockingAllowDocked))
pages.Add(page);
// Do we have any pages left for dragging?
if (pages.Count > 0)
{
DragTargetList dockspaceTargets = DockspaceControl.GenerateDragTargets(new PageDragEndData(this, pages), KryptonPageFlags.DockingAllowDocked);
targets.AddRange(dockspaceTargets.ToArray());
}
}
}
/// <summary>
/// Propogates a request for drag targets down the hierarchy of docking elements.
/// </summary>
/// <param name="floatingWindow">Reference to window being dragged.</param>
/// <param name="dragData">Set of pages being dragged.</param>
/// <param name="targets">Collection of drag targets.</param>
public override void PropogateDragTargets(KryptonFloatingWindow floatingWindow,
PageDragEndData dragData,
DragTargetList targets)
{
// Can only generate targets for a floating window that is actually visible and not the one being dragged
if (FloatingWindow.Visible && (floatingWindow != FloatingWindow))
base.PropogateDragTargets(floatingWindow, dragData, targets);
}
/// <summary>
/// Called to cleanup when dragging has finished.
/// </summary>
public virtual void Quit()
{
_pageDragEndData = null;
_dragTargets = null;
}
/// <summary>
/// Propogates a request for drag targets down the hierarchy of docking elements.
/// </summary>
/// <param name="floatingWindow">Reference to window being dragged.</param>
/// <param name="dragData">Set of pages being dragged.</param>
/// <param name="targets">Collection of drag targets.</param>
public virtual void PropogateDragTargets(KryptonFloatingWindow floatingWindow,
PageDragEndData dragData,
DragTargetList targets)
{
// Propogate the request to all child elements
foreach (IDockingElement child in this)
child.PropogateDragTargets(floatingWindow, dragData, targets);
}
/// <summary>
/// Called to initialize the implementation when dragging starts.
/// </summary>
/// <param name="paletteDragDrop">Drawing palette.</param>
/// <param name="renderer">Drawing renderer.</param>
/// <param name="pageDragEndData">Drag data associated with drag operation.</param>
/// <param name="dragTargets">List of all drag targets.</param>
public virtual void Start(IPaletteDragDrop paletteDragDrop,
IRenderer renderer,
PageDragEndData pageDragEndData,
DragTargetList dragTargets)
{
Debug.Assert(paletteDragDrop != null);
Debug.Assert(renderer != null);
Debug.Assert(pageDragEndData != null);
Debug.Assert(dragTargets != null);
_paletteDragDrop = paletteDragDrop;
_renderer = renderer;
_pageDragEndData = pageDragEndData;
_dragTargets = dragTargets;
}
/// <summary>
/// Generate a list of drag targets that are relevant to the provided end data.
/// </summary>
/// <param name="dragEndData">Pages data being dragged.</param>
/// <returns>List of drag targets.</returns>
public DragTargetList GenerateDragTargets(PageDragEndData dragEndData)
{
DragTargetList targets = new DragTargetList();
// Generate target for the entire navigator client area
targets.Add(new DragTargetTreeViewTransfer(RectangleToScreen(ClientRectangle), this));
return targets;
}
/// <summary>
/// Propogates a request for drag targets down the hierarchy of docking elements.
/// </summary>
/// <param name="floatingWindow">Reference to window being dragged.</param>
/// <param name="dragData">Set of pages being dragged.</param>
/// <param name="targets">Collection of drag targets.</param>
public override void PropogateDragTargets(KryptonFloatingWindow floatingWindow,
PageDragEndData dragData,
DragTargetList targets)
{
// Create a list of pages that are allowed to be transferred into a dockspace
List<KryptonPage> transferPages = new List<KryptonPage>();
foreach (KryptonPage page in dragData.Pages)
if (page.AreFlagsSet(KryptonPageFlags.DockingAllowDocked))
transferPages.Add(page);
// Only generate targets if we have some valid pages to transfer
if (transferPages.Count > 0)
{
// Generate targets for the four control edges
Rectangle screenRect = Control.RectangleToScreen(Control.ClientRectangle);
Rectangle[] rectsDraw = SubdivideRectangle(screenRect, 3, int.MaxValue);
Rectangle[] rectsHot = SubdivideRectangle(screenRect, 10, 20);
// Must insert at start of target list as they are higher priority than cell targets
targets.Add(new DragTargetControlEdge(screenRect, rectsHot[0], rectsDraw[0], DragTargetHint.EdgeLeft | DragTargetHint.ExcludeCluster, this, KryptonPageFlags.DockingAllowDocked, true));
targets.Add(new DragTargetControlEdge(screenRect, rectsHot[1], rectsDraw[1], DragTargetHint.EdgeRight | DragTargetHint.ExcludeCluster, this, KryptonPageFlags.DockingAllowDocked, true));
targets.Add(new DragTargetControlEdge(screenRect, rectsHot[2], rectsDraw[2], DragTargetHint.EdgeTop | DragTargetHint.ExcludeCluster, this, KryptonPageFlags.DockingAllowDocked, true));
targets.Add(new DragTargetControlEdge(screenRect, rectsHot[3], rectsDraw[3], DragTargetHint.EdgeBottom | DragTargetHint.ExcludeCluster, this, KryptonPageFlags.DockingAllowDocked, true));
// If we have no designated inner element when we have to decide if we can place edge drag drop targets based on the
// available space at the center of the control after taking into account any edge docked controls already in place.
if (_innerElement == null)
{
// Find the inner rectangle after taking docked controls into account
Size tl = Size.Empty;
Size br = Control.ClientSize;
foreach (Control c in Control.Controls)
if (c.Visible)
{
switch (c.Dock)
{
case DockStyle.Left:
tl.Width = Math.Max(tl.Width, c.Right);
break;
case DockStyle.Right:
br.Width = Math.Min(br.Width, c.Left);
break;
case DockStyle.Top:
tl.Height = Math.Max(tl.Height, c.Bottom);
break;
case DockStyle.Bottom:
br.Height = Math.Min(br.Height, c.Top);
break;
}
}
// If there is inner space available
Rectangle innerRect = new Rectangle(tl.Width, tl.Height, br.Width - tl.Width, br.Height - tl.Height);
if ((innerRect.Width > 0) && (innerRect.Height > 0))
{
Rectangle innerScreenRect = Control.RectangleToScreen(innerRect);
Rectangle[] innerRectsDraw = SubdivideRectangle(innerScreenRect, 3, int.MaxValue);
Rectangle[] innerRectsHot = SubdivideRectangle(innerScreenRect, 10, 20);
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[0], innerRectsDraw[0], DragTargetHint.EdgeLeft, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[1], innerRectsDraw[1], DragTargetHint.EdgeRight, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[2], innerRectsDraw[2], DragTargetHint.EdgeTop, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[3], innerRectsDraw[3], DragTargetHint.EdgeBottom, this, KryptonPageFlags.DockingAllowDocked, false));
}
}
else if (_innerElement is KryptonDockingNavigator)
{
KryptonDockingNavigator dockingNavigator = (KryptonDockingNavigator)_innerElement;
// If there is inner space available
Rectangle innerScreenRect = dockingNavigator.DockableNavigatorControl.RectangleToScreen(dockingNavigator.DockableNavigatorControl.ClientRectangle);
if ((innerScreenRect.Width > 0) && (innerScreenRect.Height > 0))
{
Rectangle[] innerRectsDraw = SubdivideRectangle(innerScreenRect, 3, int.MaxValue);
Rectangle[] innerRectsHot = SubdivideRectangle(innerScreenRect, 10, 20);
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[0], innerRectsDraw[0], DragTargetHint.EdgeLeft, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[1], innerRectsDraw[1], DragTargetHint.EdgeRight, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[2], innerRectsDraw[2], DragTargetHint.EdgeTop, this, KryptonPageFlags.DockingAllowDocked, false));
targets.Add(new DragTargetControlEdge(innerScreenRect, innerRectsHot[3], innerRectsDraw[3], DragTargetHint.EdgeBottom, this, KryptonPageFlags.DockingAllowDocked, false));
}
}
// Let base class generate targets for contained elements
base.PropogateDragTargets(floatingWindow, dragData, targets);
}
}