/// <summary>
/// Updates the text.
/// </summary>
private void UpdateText()
{
#if USE_FASTRENDERERS
TextChanged -= OnTextChanged;
#else
Control.TextChanged -= OnTextChanged;
#endif
var icon = Iconize.FindIconForKey(Button.Text);
if (icon != null)
{
#if USE_FASTRENDERERS
Text = $"{icon.Character}";
Typeface = Iconize.FindModuleOf(icon).ToTypeface(Context);
#else
Control.Text = $"{icon.Character}";
Control.Typeface = Iconize.FindModuleOf(icon).ToTypeface(Context);
#endif
}
#if USE_FASTRENDERERS
TextChanged += OnTextChanged;
#else
Control.TextChanged += OnTextChanged;
#endif
}
private void UpdateText()
{
#if USE_FASTRENDERERS
TextChanged -= OnTextChanged;
var icon = Iconize.FindIconForKey(Label.Text);
if (!(icon is null))
{
Text = $"{icon.Character}";
Typeface = Iconize.FindModuleOf(icon).ToTypeface(Context);
}
TextChanged += OnTextChanged;
#else
if (!(Control is null))
{
Control.TextChanged -= OnTextChanged;
var icon = Iconize.FindIconForKey(Label.Text);
if (!(icon is null))
{
Control.Text = $"{icon.Character}";
Control.Typeface = Iconize.FindModuleOf(icon).ToTypeface(Context);
}
Control.TextChanged += OnTextChanged;
}
#endif
}
/// <summary>
/// To the image source.
/// </summary>
/// <param name="icon">The icon.</param>
/// <param name="size">The size.</param>
/// <param name="color">The color.</param>
/// <returns></returns>
public static ImageSource ToImageSource(this IIcon icon, Xamarin.Forms.Color color)
{
var character = $"{icon.Character}";
var module = Iconize.FindModuleOf(icon);
var typeface = new Typeface(new FontFamily(new Uri("pack://application:,,,/"), $"/#{module.FontFamily}"), FontStyles.Normal, FontWeights.Regular, FontStretches.Normal);
if (!typeface.TryGetGlyphTypeface(out var glyphTypeface))
{
throw new InvalidOperationException("No glyphtypeface found");
}
var glyphIndexes = new UInt16[character.Length];
var advanceWidths = new Double[character.Length];
for (int n = 0; n < character.Length; n++)
{
ushort glyphIndex = glyphTypeface.CharacterToGlyphMap[character[n]];
glyphIndexes[n] = glyphIndex;
double width = glyphTypeface.AdvanceWidths[glyphIndex] * 1.0;
advanceWidths[n] = width;
}
var gr = new GlyphRun(glyphTypeface, 0, false, 1.0, glyphIndexes,
new System.Windows.Point(0, 0), advanceWidths,
null, null, null, null, null, null);
var glyphRunDrawing = new GlyphRunDrawing(new SolidColorBrush(ToUIColor(color)), gr);
return(new DrawingImage(glyphRunDrawing));
}
/// <summary>
/// Create an <see cref="IconDrawable" />.
/// </summary>
/// <param name="context">Your activity or application context.</param>
/// <param name="icon">The icon you want this drawable to display.</param>
public IconDrawable(Context context, IIcon icon)
{
var module = Iconize.FindModuleOf(icon);
Console.WriteLine("IconDrawable.Icon " + icon);
if (icon is null)
{
throw new Java.Lang.IllegalStateException("El icono no puede estar nulo.");
}
if (module is null)
{
throw new Java.Lang.IllegalStateException($"Unable to find the module associated with icon {icon.Key}, have you registered the module you are trying to use with Iconize.With(...) in your Application?");
}
_context = context;
_icon = icon;
_paint = new TextPaint
{
AntiAlias = true,
TextAlign = Paint.Align.Center,
UnderlineText = false
};
_paint.SetStyle(Paint.Style.Fill);
_paint.SetTypeface(module.ToTypeface(context));
}
/// <summary>
/// Updates the text.
/// </summary>
private void UpdateText()
{
var icon = Iconize.FindIconForKey(Element.Text);
if (icon != null)
{
Control.Title = $"{icon.Character}";
Control.Font = Iconize.FindModuleOf(icon).ToNSFont((nfloat)Element.FontSize);
}
}
/// <summary>
/// Updates the text.
/// </summary>
private void UpdateText()
{
var icon = Iconize.FindIconForKey(Element.Text);
if (!(icon is null))
{
Control.Text = $"{icon.Character}";
Control.FontFamily = Iconize.FindModuleOf(icon).ToFontFamily();
}
}
/// <summary>
/// Updates the text.
/// </summary>
private void UpdateText()
{
var icon = Iconize.FindIconForKey(Element.Text);
if (icon != null)
{
var font = Iconize.FindModuleOf(icon)?.ToUIFont((nfloat)Element.FontSize);
if (font != null)
{
Control.SetTitle($"{icon.Character}", UIControlState.Normal);
Control.Font = font;
}
}
}
/// <summary>
/// Updates the text.
/// </summary>
private void UpdateText()
{
TextChanged -= OnTextChanged;
var icon = Iconize.FindIconForKey(Label.Text);
if (icon != null)
{
Text = $"{icon.Character}";
Typeface = Iconize.FindModuleOf(icon).ToTypeface(Context);
}
TextChanged += OnTextChanged;
}
/// <summary>
/// Updates the text.
/// </summary>
private void UpdateText()
{
var icon = Iconize.FindIconForKey(Element.Text);
if (!(icon is null))
{
var font = Iconize.FindModuleOf(icon)?.ToUIFont((nfloat)Element.FontSize);
if (!(font is null))
{
Control.Text = $"{icon.Character}";
Control.Font = font;
}
}
}
/// <summary>
/// To the UI image.
/// </summary>
/// <param name="icon">The icon.</param>
/// <param name="size">The size.</param>
/// <returns></returns>
public static UIImage ToUIImage(this IIcon icon, nfloat size)
{
var attributedString = new NSAttributedString($"{icon.Character}", new CTStringAttributes
{
Font = new CTFont(Iconize.FindModuleOf(icon).FontName, size),
ForegroundColorFromContext = true
});
var boundSize = attributedString.GetBoundingRect(new CGSize(10000f, 10000f), NSStringDrawingOptions.UsesLineFragmentOrigin, null).Size;
UIGraphics.BeginImageContextWithOptions(boundSize, false, 0f);
attributedString.DrawString(new CGRect(0f, 0f, boundSize.Width, boundSize.Height));
using (var image = UIGraphics.GetImageFromCurrentImageContext())
{
UIGraphics.EndImageContext();
return(image.ImageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate));
}
}
/// <summary>
/// To the color of the ns image with.
/// </summary>
/// <param name="icon">The icon.</param>
/// <param name="size">The size.</param>
/// <param name="color">The color.</param>
/// <returns></returns>
public static NSImage ToNSImageWithColor(this IIcon icon, nfloat size, CGColor color)
{
var attributedString = new NSAttributedString($"{icon.Character}", new CTStringAttributes
{
Font = new CTFont(Iconize.FindModuleOf(icon).FontName, size),
ForegroundColorFromContext = true
});
using (var ctx = new CGBitmapContext(IntPtr.Zero, (nint)size, (nint)size, 8, 4 * (nint)(size), CGColorSpace.CreateDeviceRGB(), CGImageAlphaInfo.PremultipliedFirst))
{
ctx.SetFillColor(color);
using (var textLine = new CTLine(attributedString))
{
textLine.Draw(ctx);
}
return(new NSImage(ctx.ToImage(), new CGSize(size, size)));
}
}
/// <summary>
/// Updates the button icon.
/// </summary>
/// <param name="button">The button.</param>
private static void UpdateButtonIcon(AppBarButton button)
{
if (button?.DataContext is IconToolbarItem item)
{
var icon = Iconize.FindIconForKey(item.Icon);
if (icon != null)
{
button.ClearValue(AppBarButton.IconProperty);
button.Icon = new FontIcon
{
FontFamily = Iconize.FindModuleOf(icon).ToFontFamily(),
Glyph = $"{icon.Character}"
};
if (item.IconColor != default(Color))
{
button.Icon.Foreground = new SolidColorBrush(item.IconColor.ToUIColor());
}
button.Visibility = item.IsVisible ? Visibility.Visible : Visibility.Collapsed;
}
}
}
/// <summary>
/// Initializes the specified context.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="icon">The icon.</param>
/// <exception cref="Java.Lang.IllegalStateException">Unable to find the module associated +
/// with icon + icon.Key + , have you registered the module +
/// you are trying to use with Iconize.With(...) in your Application?</exception>
private void Init(Context context, IIcon icon)
{
var module = Iconize.FindModuleOf(icon);
if (module == null)
{
throw new Java.Lang.IllegalStateException($"Unable to find the module associated with icon {icon.Key}, have you registered the module you are trying to use with Iconize.With(...) in your Application?");
}
_context = context;
_icon = icon;
_paint = new TextPaint
{
AntiAlias = true,
Color = Android.Graphics.Color.Black,
TextAlign = Paint.Align.Center,
UnderlineText = false
};
_paint.SetStyle(Paint.Style.Fill);
_paint.SetTypeface(module.ToTypeface(context));
}
/// <summary>
/// To the image source.
/// </summary>
/// <param name="icon">The icon.</param>
/// <param name="size">The size.</param>
/// <param name="color">The color.</param>
/// <returns></returns>
public static async Task <Windows.UI.Xaml.Media.ImageSource> ToImageSourceAsync(this IIcon icon, Int32 size, Color color)
{
var character = $"{icon.Character}";
var module = Iconize.FindModuleOf(icon);
using (var surface = SKSurface.Create(size, size, SKImageInfo.PlatformColorType, SKAlphaType.Premul))
{
using (var paint = new SKPaint())
{
using (var typeface = SKTypeface.FromFile(Path.Combine(Package.Current.InstalledLocation.Path, module.GetType().GetTypeInfo().Assembly.GetName().Name, module.FontPath)))
{
paint.Color = color.ToSKColor();
paint.IsAntialias = true;
paint.Typeface = typeface;
// Adjust TextSize property so text is 90% of size
var textWidth = paint.MeasureText(character);
paint.TextSize = 0.9f * size * paint.TextSize / textWidth;
// Find the text bounds
var textBounds = new SKRect();
paint.MeasureText(character, ref textBounds);
// Calculate offsets to center the text
var xText = (size / 2) - textBounds.MidX;
var yText = (size / 2) - textBounds.MidY;
// And draw the text
surface.Canvas.DrawText(character, xText, yText, paint);
}
}
var bitmap = new BitmapImage();
await bitmap.SetSourceAsync(surface.Snapshot().Encode().AsStream().AsRandomAccessStream());
return(bitmap);
}
}
