/// <summary>
/// Process Windows-based messages.
/// </summary>
/// <param name="m">A Windows-based message.</param>
protected override void WndProc(ref Message m)
{
// We need to snoop the need to show a context menu
if (m.Msg == PI.WM_CONTEXTMENU)
{
// Only interested in overriding the behavior when we have a krypton context menu...
if (KryptonContextMenu != null)
{
// Extract the screen mouse position (if might not actually be provided)
Point mousePt = new Point(PI.LOWORD(m.LParam), PI.HIWORD(m.LParam));
// If keyboard activated, the menu position is centered
if (((int)((long)m.LParam)) == -1)
{
mousePt = new Point(Width / 2, Height / 2);
}
else
{
mousePt = PointToClient(mousePt);
// Mouse point up and left 1 pixel so that the mouse overlaps the top left corner
// of the showing context menu just like it happens for a ContextMenuStrip.
mousePt.X -= 1;
mousePt.Y -= 1;
}
// If the mouse posiiton is within our client area
if (ClientRectangle.Contains(mousePt))
{
// Show the context menu
KryptonContextMenu.Show(this, PointToScreen(mousePt));
// We eat the message!
return;
}
}
}
base.WndProc(ref m);
}
/// <summary>
/// Initialize a new instance of the VisualContextMenu class.
/// </summary>
/// <param name="contextMenu">Originating context menu instance.</param>
/// <param name="palette">Local palette setting to use initially.</param>
/// <param name="paletteMode">Palette mode setting to use initially.</param>
/// <param name="redirector">Redirector used for obtaining palette values.</param>
/// <param name="redirectorImages">Redirector used for obtaining images.</param>
/// <param name="items">Collection of context menu items to be displayed.</param>
/// <param name="enabled">Enabled state of the context menu.</param>
/// <param name="keyboardActivated">Was the context menu activate by a keyboard action.</param>
public VisualContextMenu(KryptonContextMenu contextMenu,
IPalette palette,
PaletteMode paletteMode,
PaletteRedirect redirector,
PaletteRedirectContextMenu redirectorImages,
KryptonContextMenuCollection items,
bool enabled,
bool keyboardActivated)
: base(true)
{
_contextMenu = contextMenu;
_redirector = redirector;
// Create the view manager instance with root element
ViewManager = new ViewContextMenuManager(this, new ViewLayoutNull());
// Set the initial resolved palette to the appropriate setting
if (palette != null)
{
SetPalette(palette);
}
else
{
SetPalette(KryptonManager.GetPaletteForMode(paletteMode));
}
// Set of context menu columns
_viewColumns = new ViewLayoutStack(true);
// Create provider instance
_provider = new ContextMenuProvider(contextMenu, (ViewContextMenuManager)ViewManager, _viewColumns,
palette, paletteMode, redirector, redirectorImages,
NeedPaintDelegate, enabled);
_provider.Closing += new CancelEventHandler(OnProviderClosing);
_provider.Close += new EventHandler <CloseReasonEventArgs>(OnProviderClose);
_provider.Dispose += new EventHandler(OnProviderClose);
Construct(items, keyboardActivated);
}
/// <summary>
/// Initialize a new instance of the ContextMenuArgs class.
/// </summary>
/// <param name="kcm">KryptonContextMenu that can be customized.</param>
/// <param name="positionH">Relative horizontal position of the KryptonContextMenu.</param>
/// <param name="positionV">Relative vertical position of the KryptonContextMenu.</param>
public ContextPositionMenuArgs(KryptonContextMenu kcm,
KryptonContextMenuPositionH positionH,
KryptonContextMenuPositionV positionV)
: this(null, kcm, positionH, positionV)
{
}
private void OnOverflowButtonClick(object sender, MouseEventArgs e)
{
// Only allow a single context menu at a time
if (!_showingContextMenu)
{
// Get access to the controller, view and crumb item
ViewDrawButton viewButton = sender as ViewDrawButton;
ButtonController controller = viewButton.MouseController as ButtonController;
// Create a context menu with a items collection
KryptonContextMenu kcm = new KryptonContextMenu();
// Use same palette settings for context menu as the main control
kcm.Palette = _kryptonBreadCrumb.Palette;
if (kcm.Palette == null)
{
kcm.PaletteMode = _kryptonBreadCrumb.PaletteMode;
}
// Add an items collection as the root item of the context menu
KryptonContextMenuItems items = new KryptonContextMenuItems();
kcm.Items.Add(items);
// Store lookup between each menu item and the crumb it represents. Prevents
// needing to use the menu item tag for remembering association. Leaving the
// tag free for use by the user.
_menuItemToCrumb = new MenuItemToCrumb();
// Create a new menu item to represent each of the invisible crumbs not children of the root
// (item 0=overflow button, 1=root; 2=child of root, so we start at index 3)
for (int i = 3; i < Count; i++)
{
if (!this[i].Visible)
{
KryptonBreadCrumbItem childCrumb = _buttonToCrumb[(ViewDrawButton)this[i]];
KryptonContextMenuItem childMenu = new KryptonContextMenuItem();
// Store 1-to-1 association
_menuItemToCrumb.Add(childMenu, childCrumb);
// Copy across the display details of the child crumb item
childMenu.Text = childCrumb.ShortText;
childMenu.ExtraText = childCrumb.LongText;
childMenu.Image = childCrumb.Image;
childMenu.ImageTransparentColor = childCrumb.ImageTransparentColor;
childMenu.Click += new EventHandler(OnChildCrumbClick);
items.Items.Add(childMenu);
}
}
// Create a new menu item to represent each of the roots children
bool firstRoot = true;
foreach (KryptonBreadCrumbItem childCrumb in _kryptonBreadCrumb.RootItem.Items)
{
// The first time we add an entry
if (firstRoot)
{
// Add a separator if entries already exist
if (items.Items.Count > 0)
{
items.Items.Add(new KryptonContextMenuSeparator());
}
firstRoot = false;
}
KryptonContextMenuItem childMenu = new KryptonContextMenuItem();
// Store 1-to-1 association
_menuItemToCrumb.Add(childMenu, childCrumb);
// Copy across the display details of the child crumb item
childMenu.Text = childCrumb.ShortText;
childMenu.ExtraText = childCrumb.LongText;
childMenu.Image = childCrumb.Image;
childMenu.ImageTransparentColor = childCrumb.ImageTransparentColor;
childMenu.Click += new EventHandler(OnChildCrumbClick);
items.Items.Add(childMenu);
}
// Allow the user a chance to alter the menu contents or cancel it entirely
ContextPositionMenuArgs cpma = new ContextPositionMenuArgs(kcm, KryptonContextMenuPositionH.Left, KryptonContextMenuPositionV.Below);
_kryptonBreadCrumb.OnOverflowDropDown(cpma);
// Is there still the need to show a menu that is not empty?
if (!cpma.Cancel &&
(cpma.KryptonContextMenu != null) &&
CommonHelper.ValidKryptonContextMenu(cpma.KryptonContextMenu))
{
// Cache the controller for use in menu close processing, prevents the need to
// store anything in the KryptonContextMenu tag and so free up its use to the user.
_pressedButtonController = controller;
// Show the context menu so user can select the next item for selection
cpma.KryptonContextMenu.Closed += new ToolStripDropDownClosedEventHandler(OnKryptonContextMenuClosed);
cpma.KryptonContextMenu.Show(_kryptonBreadCrumb, _kryptonBreadCrumb.RectangleToScreen(new Rectangle(viewButton.ClientRectangle.X,
viewButton.ClientRectangle.Y,
viewButton.ClientRectangle.Width * 2,
viewButton.ClientRectangle.Height)),
cpma.PositionH,
cpma.PositionV);
// do not show another context menu whilst this one is visible
_showingContextMenu = true;
}
else
{
// Button gives a fixed appearance when pressed, without a context menu that is not necessary
controller.RemoveFixed();
// Clicking item makes it become the selected crumb
_kryptonBreadCrumb.SelectedItem = _kryptonBreadCrumb.RootItem;
}
}
}
private void OnButtonClick(object sender, MouseEventArgs e)
{
// Only allow a single context menu at a time
if (!_showingContextMenu)
{
// Get access to the controller, view and crumb item
ViewDrawButton viewButton = sender as ViewDrawButton;
ButtonController controller = viewButton.MouseController as ButtonController;
KryptonBreadCrumbItem breadCrumb = controller.Tag as KryptonBreadCrumbItem;
// Do we need to show a drop down menu?
if (viewButton.DropDown && viewButton.SplitRectangle.Contains(e.Location))
{
// Create a context menu with a items collection
KryptonContextMenu kcm = new KryptonContextMenu();
// Use same palette settings for context menu as the main control
kcm.Palette = _kryptonBreadCrumb.Palette;
if (kcm.Palette == null)
{
kcm.PaletteMode = _kryptonBreadCrumb.PaletteMode;
}
// Add an items collection as the root item of the context menu
KryptonContextMenuItems items = new KryptonContextMenuItems();
kcm.Items.Add(items);
// Store lookup between each menu item and the crumb it represents. Prevents
// needing to use the menu item tag for remembering association. Leaving the
// tag free for use by the user.
_menuItemToCrumb = new MenuItemToCrumb();
// Create a new menu item to represent each child crumb
foreach (KryptonBreadCrumbItem childCrumb in breadCrumb.Items)
{
KryptonContextMenuItem childMenu = new KryptonContextMenuItem();
// Store 1-to-1 association
_menuItemToCrumb.Add(childMenu, childCrumb);
// Copy across the display details of the child crumb item
childMenu.Text = childCrumb.ShortText;
childMenu.ExtraText = childCrumb.LongText;
childMenu.Image = childCrumb.Image;
childMenu.ImageTransparentColor = childCrumb.ImageTransparentColor;
childMenu.Click += new EventHandler(OnChildCrumbClick);
items.Items.Add(childMenu);
}
// Allow the user a chance to alter the menu contents or cancel it entirely
BreadCrumbMenuArgs bcma = new BreadCrumbMenuArgs(breadCrumb, kcm, KryptonContextMenuPositionH.Left, KryptonContextMenuPositionV.Below);
_kryptonBreadCrumb.OnCrumbDropDown(bcma);
// Is there still the need to show a menu that is not empty?
if (!bcma.Cancel &&
(bcma.KryptonContextMenu != null) &&
CommonHelper.ValidKryptonContextMenu(bcma.KryptonContextMenu))
{
// Cache the controller for use in menu close processing, prevents the need to
// store anything in the KryptonContextMenu tag and so free up its use to the user.
_pressedButtonController = controller;
// Show the context menu so user can select the next item for selection
bcma.KryptonContextMenu.Closed += new ToolStripDropDownClosedEventHandler(OnKryptonContextMenuClosed);
bcma.KryptonContextMenu.Show(_kryptonBreadCrumb, _kryptonBreadCrumb.RectangleToScreen(new Rectangle(viewButton.SplitRectangle.X - viewButton.SplitRectangle.Width,
viewButton.SplitRectangle.Y,
viewButton.SplitRectangle.Width * 2,
viewButton.SplitRectangle.Height)),
bcma.PositionH,
bcma.PositionV);
// do not show another context menu whilst this one is visible
_showingContextMenu = true;
}
else
{
// Button gives a fixed appearance when pressed, without a context menu that is not necessary
controller.RemoveFixed();
}
}
else
{
// Button gives a fixed appearance when pressed, without a context menu that is not necessary
controller.RemoveFixed();
// Clicking item makes it become the selected crumb
_kryptonBreadCrumb.SelectedItem = breadCrumb;
}
}
}
/// <summary>
/// Initialize a new instance of the ContextMenuArgs class.
/// </summary>
/// <param name="cms">Context menu strip that can be customized.</param>
/// <param name="kcm">KryptonContextMenu that can be customized.</param>
public ContextMenuArgs(ContextMenuStrip cms,
KryptonContextMenu kcm)
{
_cms = cms;
_kcm = kcm;
}
/// <summary>
/// Initialize a new instance of the ContextMenuArgs class.
/// </summary>
/// <param name="kcm">KryptonContextMenu that can be customized.</param>
public ContextMenuArgs(KryptonContextMenu kcm)
: this(null, kcm)
{
}
/// <summary>
/// Initialize a new instance of the DateTimePickerCloseArgs class.
/// </summary>
/// <param name="kcm">KryptonContextMenu that can be examined.</param>
public DateTimePickerCloseArgs(KryptonContextMenu kcm)
{
_kcm = kcm;
}