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
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 += 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 += 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 += 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
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 += 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 += 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> /// Should the sub menu be shown at fixed screen location for this menu item. /// </summary> /// <param name="menuItem">Menu item that needs to show sub menu.</param> /// <returns>Screen rectangle to use as display rectangle.</returns> public Rectangle ProviderShowSubMenuFixedRect(KryptonContextMenuItem menuItem) => HasParentProvider?_parent.ProviderShowSubMenuFixedRect(menuItem) : Rectangle.Empty;
/// <summary>
/// Initialize a new instance of the ViewDrawMenuItem class.
/// </summary>
/// <param name="provider">Provider of context menu information.</param>
/// <param name="menuItem">Menu item definition.</param>
/// <param name="columns">Containing columns.</param>
/// <param name="standardStyle">Draw items with standard or alternate style.</param>
/// <param name="imageColumn">Draw an image background for the item images.</param>
public ViewDrawMenuItem(IContextMenuProvider provider,
KryptonContextMenuItem menuItem,
ViewLayoutStack columns,
bool standardStyle,
bool imageColumn)
: base(menuItem.StateNormal.ItemHighlight.Back,
menuItem.StateNormal.ItemHighlight.Border,
menuItem.StateNormal.ItemHighlight,
PaletteMetricPadding.ContextMenuItemHighlight,
VisualOrientation.Top)
{
// Remember values
_provider = provider;
KryptonContextMenuItem = menuItem;
_imageColumn = imageColumn;
_standardStyle = standardStyle;
// Give the item object the redirector to use when inheriting values
KryptonContextMenuItem.SetPaletteRedirect(provider);
// Create a stack of horizontal items inside the item
ViewLayoutDocker docker = new ViewLayoutDocker();
// Decide on the enabled state of the display
ItemEnabled = provider.ProviderEnabled && ResolveEnabled;
PaletteContextMenuItemState menuItemState = (ItemEnabled ? KryptonContextMenuItem.StateNormal : KryptonContextMenuItem.StateDisabled);
// Calculate the image to show inside in the image column
Image itemColumnImage = ResolveImage;
Color itemImageTransparent = ResolveImageTransparentColor;
// If no image found then...
if (itemColumnImage != null)
{
// Ensure we have a fixed size if we are showing an image column
if (_imageColumn)
{
itemColumnImage = _empty16x16;
itemImageTransparent = Color.Magenta;
}
switch (ResolveCheckState)
{
case CheckState.Checked:
itemColumnImage = provider.ProviderImages.GetContextMenuCheckedImage();
itemImageTransparent = Color.Empty;
break;
case CheckState.Indeterminate:
itemColumnImage = provider.ProviderImages.GetContextMenuIndeterminateImage();
itemImageTransparent = Color.Empty;
break;
}
}
// Column Image
PaletteTripleJustImage justImage = (ResolveChecked ? KryptonContextMenuItem.StateChecked.ItemImage : menuItemState.ItemImage);
_fixedImage = new FixedContentValue(null, null, itemColumnImage, itemImageTransparent);
_imageContent = new ViewDrawContent(justImage.Content, _fixedImage, VisualOrientation.Top);
_imageCanvas = new ViewDrawMenuImageCanvas(justImage.Back, justImage.Border, 0, false)
{
_imageContent
};
docker.Add(new ViewLayoutCenter(_imageCanvas), ViewDockStyle.Left);
_imageContent.Enabled = ItemEnabled;
// Text/Extra Text
PaletteContentJustText menuItemStyle = (standardStyle ? menuItemState.ItemTextStandard : menuItemState.ItemTextAlternate);
_fixedTextExtraText = new FixedContentValue(ResolveText, ResolveExtraText, null, Color.Empty);
_textContent = new ViewDrawMenuItemContent(menuItemStyle, _fixedTextExtraText, 1);
docker.Add(_textContent, ViewDockStyle.Fill);
_textContent.Enabled = ItemEnabled;
// Shortcut
if (KryptonContextMenuItem.ShowShortcutKeys)
{
string shortcutString = KryptonContextMenuItem.ShortcutKeyDisplayString;
if (string.IsNullOrEmpty(shortcutString))
{
shortcutString = (KryptonContextMenuItem.ShortcutKeys != Keys.None) ? new KeysConverter().ConvertToString(KryptonContextMenuItem.ShortcutKeys) : string.Empty;
}
if (shortcutString.Length > 0)
{
_shortcutContent = new ViewDrawMenuItemContent(menuItemState.ItemShortcutText, new FixedContentValue(shortcutString, null, null, Color.Empty), 2);
docker.Add(_shortcutContent, ViewDockStyle.Right);
_shortcutContent.Enabled = ItemEnabled;
}
}
// Add split item separator
SplitSeparator = new ViewDrawMenuSeparator(menuItemState.ItemSplit);
docker.Add(SplitSeparator, ViewDockStyle.Right);
SplitSeparator.Enabled = ItemEnabled;
SplitSeparator.Draw = (KryptonContextMenuItem.Items.Count > 0) && KryptonContextMenuItem.SplitSubMenu;
// SubMenu Indicator
HasSubMenu = (KryptonContextMenuItem.Items.Count > 0);
_subMenuContent = new ViewDrawMenuItemContent(menuItemState.ItemImage.Content, new FixedContentValue(null, null, (!HasSubMenu ? _empty16x16 : provider.ProviderImages.GetContextMenuSubMenuImage()), (KryptonContextMenuItem.Items.Count == 0 ? Color.Magenta : Color.Empty)), 3);
docker.Add(new ViewLayoutCenter(_subMenuContent), ViewDockStyle.Right);
_subMenuContent.Enabled = ItemEnabled;
Add(docker);
// Add a controller for handing mouse and keyboard events
MenuItemController mic = new MenuItemController(provider.ProviderViewManager, this, provider.ProviderNeedPaintDelegate);
MouseController = mic;
KeyController = mic;
// Want to know when a property changes whilst displayed
KryptonContextMenuItem.PropertyChanged += OnPropertyChanged;
// We need to know if a property of the command changes
if (KryptonContextMenuItem.KryptonCommand != null)
{
_cachedCommand = KryptonContextMenuItem.KryptonCommand;
KryptonContextMenuItem.KryptonCommand.PropertyChanged += OnCommandPropertyChanged;
}
}
/// <summary> /// Should the sub menu be shown at fixed screen location for this menu item. /// </summary> /// <param name="menuItem">Menu item that needs to show sub menu.</param> /// <returns>True if the sub menu should be a fixed size.</returns> public bool ProviderShowSubMenuFixed(KryptonContextMenuItem menuItem) => HasParentProvider && _parent.ProviderShowSubMenuFixed(menuItem);