public ButtonWrapper(MultiButtonBarControl itemControl, BarMultiButton.ButtonInfo buttonInfo)
{
this.itemControl = itemControl;
this.Button = buttonInfo;
this.ActiveTheme = buttonInfo.BarItem.ControlTheme;
string text = itemControl.GetDisplayText(this.Button.Text);
SolidColorBrush?imageBrush = null;
if (text.StartsWith("icon:"))
{
string icon = text.Substring(text.IndexOf(':') + 1);
this.ImageSource = BarImages.CreateImageSource(icon);
if (this.ImageSource is DrawingImage di)
{
imageBrush = BarImages.ChangeDrawingColor(di.Drawing, this.ActiveTheme.TextColor ?? Colors.White);
}
}
else
{
this.Text = text;
}
// Update the theme when the property changes.
this.itemControl.PropertyChanged += (sender, args) =>
{
if (args.PropertyName == nameof(this.itemControl.ActiveTheme))
{
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(args.PropertyName));
if (imageBrush is not null && this.ActiveTheme.TextColor.HasValue)
{
imageBrush.Color = this.ActiveTheme.TextColor.Value;
}
}
};
}
/// <summary>
/// Gets the text or icon to be displayed, based on the given text. This allows symbols to be easily expressed
/// in the json.
/// May also return a string prefixed with "icon:", where the rest of the text is the bar icon.
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
protected string GetDisplayText(string text)
{
var(finalText, icon) = text switch
{
"+" => ("\u2795", "plus"),
"-" => ("\u2796", "minus"),
"||" => ("\u258e \u258e", ""),
"|>" => ("\u25b6", ""),
"[]" => ("\u25a0", ""),
_ => (text, null)
};
string?iconPath = string.IsNullOrEmpty(icon)
? null
: BarImages.GetBarIconFile(icon);
return(iconPath is not null
? $"icon:{iconPath}"
: finalText);
}