private static void SetText(Labs.Controls.IconButton iconButton, UIButton targetButton)
{
var renderedIcon = iconButton.Icon;
// if no IconFontName is provided on the IconButton, default to FontAwesome
var iconFontName = string.IsNullOrEmpty(iconButton.IconFontName)
? "fontawesome"
: iconButton.IconFontName;
var iconSize = iconButton.IconSize == default(float)
? 17f
: iconButton.IconSize;
var faFont = UIFont.FromName(iconFontName, iconSize);
// set the icon to either be on the left or right of the button's text
string combinedText = iconButton.Orientation == ImageOrientation.ImageToLeft
? string.Format("{0} {1}", renderedIcon, iconButton.Text)
: string.Format("{0} {1}", iconButton.Text, renderedIcon);
// string attributes for the icon
var iconAttributes = new UIStringAttributes
{
ForegroundColor = iconButton.IconColor.ToUIColor(),
BackgroundColor = targetButton.BackgroundColor,
Font = faFont,
TextAttachment = new NSTextAttachment()
};
// string attributes for the button's text.
// TODO: Calculate an appropriate BaselineOffset for the main button text in order to center it vertically relative to the icon
var btnAttributes = new UIStringAttributes
{
BackgroundColor = iconButton.BackgroundColor.ToUIColor(),
ForegroundColor = iconButton.TextColor.ToUIColor(),
Font = GetButtonFont(iconButton,targetButton)
};
// Give the overall string the attributes of the button's text
var prettyString = new NSMutableAttributedString(combinedText,btnAttributes);
// Set the font for only the icon (1 char)
prettyString.SetAttributes(iconAttributes.Dictionary,
iconButton.Orientation == ImageOrientation.ImageToLeft
? new NSRange(0, 1)
: new NSRange(prettyString.Length - 1, 1));
// set the final formatted string as the button's text
targetButton.SetAttributedTitle(prettyString, UIControlState.Normal);
// center the button's contents
targetButton.HorizontalAlignment = UIControlContentHorizontalAlignment.Center;
targetButton.TitleLabel.TextAlignment = UITextAlignment.Center;
}
/// <summary>
/// Gets the font for the button (applied to all button text EXCEPT the icon)
/// </summary>
/// <param name="iconButton"></param>
/// <param name="targetButton"></param>
/// <returns></returns>
private static UIFont GetButtonFont(Labs.Controls.IconButton iconButton, UIButton targetButton)
{
UIFont btnTextFont = iconButton.Font.ToUIFont();
if (iconButton.Font != Font.Default && btnTextFont != null)
return btnTextFont;
else if (iconButton.Font == Font.Default)
return UIFont.SystemFontOfSize(17f);
return btnTextFont;
}
