public static NSMutableAttributedString GetAttachmentString(
this string imageName,
double fontCapHeight,
UIImageRenderingMode renderingMode = UIImageRenderingMode.AlwaysTemplate)
{
var attachment = new NSTextAttachment
{
Image = UIImage
.FromBundle(imageName)
.ImageWithRenderingMode(renderingMode)
};
var imageSize = attachment.Image.Size;
var y = (fontCapHeight - imageSize.Height) / 2;
attachment.Bounds = new CGRect(0, y, imageSize.Width, imageSize.Height);
//There neeeds to be a space before the dot, otherwise the colors don't work
var result = new NSMutableAttributedString(" ");
result.AddAttribute(UIStringAttributeKey.Font, UIFont.SystemFontOfSize(0), new NSRange(0, 1));
var attachmentString = NSAttributedString.FromAttachment(attachment);
result.Append(attachmentString);
return(result);
}
public static NSMutableAttributedString GetAttachmentString(
this string imageName,
double fontCapHeight,
UIImageRenderingMode renderingMode = UIImageRenderingMode.AlwaysTemplate)
{
var attachment = new NSTextAttachment
{
Image = UIImage
.FromBundle(imageName)
.ImageWithRenderingMode(renderingMode)
};
var imageSize = attachment.Image.Size;
var y = (fontCapHeight - imageSize.Height) / 2;
attachment.Bounds = new CGRect(0, y, imageSize.Width, imageSize.Height);
var result = new NSMutableAttributedString("");
if (!UIDevice.CurrentDevice.CheckSystemVersion(13, 0))
{
// For older iOS versions, there neeeds to be a space before the dot, otherwise the colors don't work
// in iOS 13, they fixed it and this hack breaks the colors
result.Append(new NSAttributedString(" "));
result.AddAttribute(UIStringAttributeKey.Font, UIFont.SystemFontOfSize(0), new NSRange(0, 1));
}
var attachmentString = NSAttributedString.FromAttachment(attachment);
result.Append(attachmentString);
return(result);
}
public static void LoadSvg(this UIImageView imageView, string svg, Size size,
UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
var image = svg.LoadImageFromSvg(size, renderingMode);
imageView.Image = image;
}
public static UIImage LoadImageFromSvg(this string svg, Size size,
UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
var file = ResourceHelper.GetEmbeddedResourceStream(svg);
return(file.LoadImageFromSvgStream(svg, size, renderingMode));
}
public static UIImage LoadImageFromSvgStream(this TextReader fileStream, Size size,
UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
var graphic = Graphic.LoadSvg(fileStream);
//Shame on Size not being Equatable ;)
if (size.Width <= 0 || size.Height <= 0)
{
size = graphic.Size;
}
var gSize = graphic.Size;
if (gSize.Width > size.Width || size.Height > gSize.Height)
{
var ratioX = size.Width / gSize.Width;
var ratioY = size.Height / gSize.Height;
var ratio = Math.Min(ratioY, ratioX);
graphic.Size = size = new Size(gSize.Width * ratio, gSize.Height * ratio);
}
var c = Platform.CreateImageCanvas(size, Scale);
graphic.Draw(c);
var image = c.GetImage().GetUIImage();
if (renderingMode != UIImageRenderingMode.Automatic)
{
image = image.ImageWithRenderingMode(renderingMode);
}
fileStream.Dispose();
return(image);
}
public static void LoadSvg(this UIImageView imageView, Stream svgstream, UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
var s = imageView.Bounds.Size;
var reader = new StreamReader(svgstream);
var image = reader.LoadImageFromSvgStream(new Size(s.Width, s.Height), renderingMode);
imageView.Image = image;
}
private void SetImageColor(Color iconColor)
{
if (Element.Source != null && Control.Image != null)
{
UIImageRenderingMode renderingMode = iconColor == null || iconColor == Color.Default || iconColor == Color.Transparent ? UIImageRenderingMode.Automatic : UIImageRenderingMode.AlwaysTemplate;
Control.Image = Control.Image.ImageWithRenderingMode(renderingMode);
Control.TintColor = iconColor.ToUIColor();
}
}
public FontIconAppearance(CTFont font,
CGColor[] colors = null,
UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic,
CGColor strokeColor = null,
float strokeWidth = 0)
{
Font = font;
Colors = colors ?? new[] { UIColor.DarkGray.CGColor };
RenderingMode = renderingMode;
StrokeColor = strokeColor ?? UIColor.Black.CGColor;
RenderingMode = renderingMode;
StrokeWidth = strokeWidth;
}
public static UIImage LoadImageFromSvg(this string svg, Size size,
UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
try {
var fileName = System.IO.Path.GetFileNameWithoutExtension(svg);
var file = File.OpenText(svg);
var image = file.LoadImageFromSvgStream(size, renderingMode);
image.AccessibilityIdentifier = fileName;
return(image);
} catch (Exception ex) {
Debug.WriteLine(ex);
Debug.WriteLine("Failed parsing: {0}", svg);
throw;
}
}
void SetOverlay(Color color)
{
var formsImage = (Image)Element;
if (formsImage?.Source == null || formsImage?.IsLoading == true)
{
return;
}
if (Control is UIImageView imageView && imageView.Image != null)
{
originalRenderingMode = imageView.Image.RenderingMode;
originalTintColor = imageView.TintColor;
imageView.Image = imageView.Image.ImageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate);
imageView.TintColor = color.ToUIColor();
}
}
public static UIImage LoadImageFromSvg(this string svg, Size size,
UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
try
{
var fileName = System.IO.Path.GetFileNameWithoutExtension(svg);
using (var file = File.OpenText(svg))
{
var graphic = Graphic.LoadSvg(file);
//Shame on Size not being Equatable ;)
if (size.Width <= 0 || size.Height <= 0)
{
size = graphic.Size;
}
var gSize = graphic.Size;
if (gSize.Width > size.Width || size.Height > gSize.Height)
{
var ratioX = size.Width / gSize.Width;
var ratioY = size.Height / gSize.Height;
var ratio = Math.Min(ratioY, ratioX);
graphic.Size = size = new Size(gSize.Width * ratio, gSize.Height * ratio);
}
var c = Platform.CreateImageCanvas(size, Scale);
graphic.Draw(c);
var image = c.GetImage().GetUIImage();
if (renderingMode != UIImageRenderingMode.Automatic)
{
image = image.ImageWithRenderingMode(renderingMode);
}
image.AccessibilityIdentifier = fileName;
return(image);
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
Console.WriteLine("Failed parsing: {0}", svg);
throw;
}
}
public virtual UIImage ImageWithRenderingMode(UIImageRenderingMode renderingMode)
{
return(default(UIImage));
}
public static void LoadSvg(this UIImageView imageView, string svg, UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
var s = imageView.Bounds.Size;
LoadSvg(imageView, svg, new Size(s.Width, s.Height), renderingMode);
}
public static UIImage LoadImageFromSvgStream(this TextReader fileStream, double size,
UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
return(fileStream.LoadImageFromSvgStream(new Size(size, size), renderingMode));
}
public static UIImage LoadImageFromSvg(this string svg, double size,
UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
return(svg.LoadImageFromSvg(new Size(size, size), renderingMode));
}
public static void LoadSvg(this UIImageView imageView, string svg, double size,
UIImageRenderingMode renderingMode = UIImageRenderingMode.Automatic)
{
imageView.LoadSvg(svg, new Size(size, size), renderingMode);
}
