/// <summary> /// Discover the preferred size of the element. /// </summary> /// <param name="context">Layout context.</param> /// <exception cref="ArgumentNullException"></exception> public override Size GetPreferredSize(ViewLayoutContext context) { Debug.Assert(context != null); // Always update to the latest correct check state if (_imageCanvas != null) { if (ResolveChecked) { _imageCanvas.ElementState = PaletteState.CheckedNormal; _imageCanvas.Enabled = ResolveEnabled; } else { _imageCanvas.ElementState = PaletteState.Normal; _imageCanvas.Enabled = true; } } PaletteDouble splitPalette; // Make sure we are using the correct palette for state switch (State) { default: case PaletteState.Normal: SetPalettes(KryptonContextMenuItem.StateNormal.ItemHighlight.Back, KryptonContextMenuItem.StateNormal.ItemHighlight.Border, KryptonContextMenuItem.StateNormal.ItemHighlight); splitPalette = KryptonContextMenuItem.StateNormal.ItemSplit; break; case PaletteState.Disabled: SetPalettes(KryptonContextMenuItem.StateDisabled.ItemHighlight.Back, KryptonContextMenuItem.StateDisabled.ItemHighlight.Border, KryptonContextMenuItem.StateDisabled.ItemHighlight); splitPalette = KryptonContextMenuItem.StateDisabled.ItemSplit; break; case PaletteState.Tracking: SetPalettes(KryptonContextMenuItem.StateHighlight.ItemHighlight.Back, KryptonContextMenuItem.StateHighlight.ItemHighlight.Border, KryptonContextMenuItem.StateHighlight.ItemHighlight); splitPalette = KryptonContextMenuItem.StateHighlight.ItemSplit; break; } // Validate incoming reference if (context == null) { throw new ArgumentNullException(nameof(context)); } // If we have image display if (_fixedImage != null) { 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; } } // Decide on the enabled state of the display ItemEnabled = _provider.ProviderEnabled && ResolveEnabled; PaletteContextMenuItemState menuItemState = (ItemEnabled ? KryptonContextMenuItem.StateNormal : KryptonContextMenuItem.StateDisabled); // Update palettes based on Checked state PaletteTripleJustImage justImage = (ResolveChecked ? KryptonContextMenuItem.StateChecked.ItemImage : menuItemState.ItemImage); _imageCanvas?.SetPalettes(justImage.Back, justImage.Border); // Update the Enabled state _imageContent.SetPalette(justImage.Content); _imageContent.Enabled = ItemEnabled; _textContent.Enabled = ItemEnabled; SplitSeparator.Enabled = ItemEnabled; _subMenuContent.Enabled = ItemEnabled; if (_shortcutContent != null) { _shortcutContent.Enabled = ItemEnabled; } // Update the Text/ExtraText _fixedTextExtraText.ShortText = ResolveText; _fixedTextExtraText.LongText = ResolveExtraText; // Update the Image _fixedImage.Image = itemColumnImage; _fixedImage.ImageTransparentColor = itemImageTransparent; } SplitSeparator?.SetPalettes(splitPalette.Back, splitPalette.Border); return(base.GetPreferredSize(context)); }
/// <summary> /// Initialize a new instance of the PaletteContextMenuItemStateChecked class. /// </summary> public PaletteContextMenuItemStateChecked(PaletteTripleJustImageRedirect redirectItemImage) { ItemImage = new PaletteTripleJustImage(redirectItemImage); }
/// <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; } }