| public GetMetricPadding ( PaletteState state, PaletteMetricPadding metric ) : Padding | ||
| state | PaletteState | Palette value should be applicable to this state. |
| metric | PaletteMetricPadding | Requested metric. |
| Результат | Padding | |
/// <summary>
/// Initialize a new instance of the ViewLayoutMenuItemsPile class.
/// </summary>
/// <param name="provider">Provider of context menu values.</param>
/// <param name="items">Reference to the owning collection.</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 ViewLayoutMenuItemsPile(IContextMenuProvider provider,
KryptonContextMenuItems items,
bool standardStyle,
bool imageColumn)
{
// Cache access to the highlight item palette
_paletteItemHighlight = provider.ProviderStateCommon.ItemHighlight;
// Create and place an image column inside a docker so it appears on the left side
_imageColumn = new ViewDrawMenuImageColumn(items, provider.ProviderStateCommon.ItemImageColumn);
ViewLayoutDocker imageDocker = new ViewLayoutDocker
{
{ _imageColumn, ViewDockStyle.Left }
};
// Only show the image column when in a standard collection of items
imageDocker.Visible = imageColumn;
// Create a vertical stack that contains each individual menu item
ItemStack = new ViewLayoutStack(false)
{
FillLastChild = false
};
// Use a docker with the item stack as the fill
ViewLayoutDocker stackDocker = new ViewLayoutDocker
{
{ ItemStack, ViewDockStyle.Fill }
};
// Grab the padding for around the item stack
Padding itemsPadding = _paletteItemHighlight.GetMetricPadding(PaletteState.Normal, PaletteMetricPadding.ContextMenuItemsCollection);
stackDocker.Add(new ViewLayoutSeparator(itemsPadding.Left), ViewDockStyle.Left);
stackDocker.Add(new ViewLayoutSeparator(itemsPadding.Right), ViewDockStyle.Right);
stackDocker.Add(new ViewLayoutSeparator(itemsPadding.Top), ViewDockStyle.Top);
stackDocker.Add(new ViewLayoutSeparator(itemsPadding.Bottom), ViewDockStyle.Bottom);
// The background of the pile is the image column
Add(imageDocker);
// The foreground of the pile is the stack of menu items
Add(stackDocker);
}
private void UpdateImageColumnWidth(IRenderer renderer)
{
// If there is an image column then we will have a entry for index 0
if (_columnToWidth.ContainsKey(0))
{
// Find the border padding that is applied to the content of the menu item
Padding borderPadding = renderer.RenderStandardBorder.GetBorderDisplayPadding(_paletteItemHighlight.Border,
PaletteState.Normal,
VisualOrientation.Top);
// Add double the left edge to the right edge of the image background coumn
int imageColumnWidth = _columnToWidth[0];
imageColumnWidth += borderPadding.Left * 3;
// Add double the metric padding that occurs outside the item highlight
Padding itemMetricPadding = _paletteItemHighlight.GetMetricPadding(PaletteState.Normal, PaletteMetricPadding.ContextMenuItemHighlight);
imageColumnWidth += itemMetricPadding.Left * 2;
_imageColumn.ColumnWidth = imageColumnWidth;
}
}
/// <summary>
/// Gets a padding metric value.
/// </summary>
/// <param name="state">Palette value should be applicable to this state.</param>
/// <param name="metric">Requested metric.</param>
/// <returns>Padding value.</returns>
public virtual Padding GetMetricPadding(PaletteState state, PaletteMetricPadding metric)
{
// Always pass onto the inheritance
return(_inherit.GetMetricPadding(state, metric));
}