internal async Task UpdateToolbarItems()
{
var toolbarProvider = GetToolbarProvider();
if (toolbarProvider == null)
{
return;
}
CommandBar commandBar = await toolbarProvider.GetCommandBarAsync();
if (commandBar == null)
{
return;
}
commandBar.PrimaryCommands.Clear();
commandBar.SecondaryCommands.Clear();
var toolBarForegroundBinder = GetToolbarProvider() as IToolBarForegroundBinder;
foreach (ToolbarItem item in _toolbarTracker.ToolbarItems)
{
toolBarForegroundBinder?.BindForegroundColor(commandBar);
var button = new AppBarButton();
button.SetBinding(AppBarButton.LabelProperty, "Text");
if (commandBar.IsDynamicOverflowEnabled && item.Order == ToolbarItemOrder.Secondary)
{
button.SetBinding(AppBarButton.IconProperty, "IconImageSource", _imageSourceIconElementConverter);
}
else
{
var img = new WImage();
img.SetBinding(WImage.SourceProperty, "Value");
img.SetBinding(WImage.DataContextProperty, "IconImageSource", _imageConverter);
button.Content = img;
}
button.Command = new MenuItemCommand(item);
button.DataContext = item;
button.SetValue(NativeAutomationProperties.AutomationIdProperty, item.AutomationId);
button.SetAutomationPropertiesName(item);
button.SetAutomationPropertiesAccessibilityView(item);
button.SetAutomationPropertiesHelpText(item);
button.SetAutomationPropertiesLabeledBy(item);
ToolbarItemOrder order = item.Order == ToolbarItemOrder.Default ? ToolbarItemOrder.Primary : item.Order;
if (order == ToolbarItemOrder.Primary)
{
toolBarForegroundBinder?.BindForegroundColor(button);
commandBar.PrimaryCommands.Add(button);
}
else
{
commandBar.SecondaryCommands.Add(button);
}
}
}
static StackPanel CreateContentContainer(Button.ButtonContentLayout layout, WImage image, string text)
{
var container = new StackPanel();
var textBlock = new TextBlock {
Text = text,
VerticalAlignment = VerticalAlignment.Center,
HorizontalAlignment = HorizontalAlignment.Center
};
var spacing = layout.Spacing;
container.HorizontalAlignment = HorizontalAlignment.Center;
container.VerticalAlignment = VerticalAlignment.Center;
switch (layout.Position)
{
case Button.ButtonContentLayout.ImagePosition.Top:
container.Orientation = Orientation.Vertical;
image.Margin = new WThickness(0, 0, 0, spacing);
container.Children.Add(image);
container.Children.Add(textBlock);
break;
case Button.ButtonContentLayout.ImagePosition.Bottom:
container.Orientation = Orientation.Vertical;
image.Margin = new WThickness(0, spacing, 0, 0);
container.Children.Add(textBlock);
container.Children.Add(image);
break;
case Button.ButtonContentLayout.ImagePosition.Right:
container.Orientation = Orientation.Horizontal;
image.Margin = new WThickness(spacing, 0, 0, 0);
container.Children.Add(textBlock);
container.Children.Add(image);
break;
default:
// Defaults to image on the left
container.Orientation = Orientation.Horizontal;
image.Margin = new WThickness(0, 0, spacing, 0);
container.Children.Add(image);
container.Children.Add(textBlock);
break;
}
return(container);
}
async void UpdateContent()
{
var text = Element.UpdateFormsText(Element.Text, Element.TextTransform);
var elementImage = await Element.ImageSource.ToWindowsImageSourceAsync();
// No image, just the text
if (elementImage == null)
{
Control.Content = text;
Element?.InvalidateMeasureNonVirtual(InvalidationTrigger.RendererReady);
return;
}
var size = elementImage.GetImageSourceSize();
var image = new WImage
{
Source = elementImage,
VerticalAlignment = VerticalAlignment.Center,
HorizontalAlignment = HorizontalAlignment.Center,
Stretch = Stretch.Uniform,
Width = size.Width,
Height = size.Height,
};
// BitmapImage is a special case that has an event when the image is loaded
// when this happens, we want to resize the button
if (elementImage is BitmapImage bmp)
{
bmp.ImageOpened += (sender, args) => {
var actualSize = bmp.GetImageSourceSize();
image.Width = actualSize.Width;
image.Height = actualSize.Height;
Element?.InvalidateMeasureNonVirtual(InvalidationTrigger.RendererReady);
};
}
// No text, just the image
if (string.IsNullOrEmpty(text))
{
Control.Content = image;
Element?.InvalidateMeasureNonVirtual(InvalidationTrigger.RendererReady);
return;
}
// Both image and text, so we need to build a container for them
Control.Content = CreateContentContainer(Element.ContentLayout, image, text);
Element?.InvalidateMeasureNonVirtual(InvalidationTrigger.RendererReady);
}
