public override void Resize(string sourceFile, string destinationFile, ImageAsset asset, OutputConfig outputConfig)
{
int sourceNominalWidth = asset.Width;
int sourceNominalHeight = asset.Height;
double resizeRatio = outputConfig.Ratio;
var bmp = SKBitmap.Decode(sourceFile);
var sourceActualWidth = bmp.Width;
var sourceActualHeight = bmp.Height;
var nominalRatio = Math.Max((double)sourceNominalWidth / (double)sourceActualWidth, (double)sourceNominalHeight / (double)sourceActualHeight);
var adjustRatio = nominalRatio * resizeRatio;
var resizeMethod = GetSKBitmapResizeMethod(outputConfig.BitmapResizeMethod ?? BitmapResizeMethod.Box);
var newBmp = bmp.Resize(new SKImageInfo((int)(bmp.Width * adjustRatio), (int)(bmp.Height * adjustRatio)), resizeMethod);
var img = SKImage.FromBitmap(newBmp);
var data = img.Encode(SKImageEncodeFormat.Png, 100);
using (var fs = File.Open(destinationFile, FileMode.Create))
data.SaveTo(fs);
}
List <string> RunExternalCommand(Config config, ImageAsset asset, OutputConfig outputConfig, FileInfo outputFileInfo, string command)
{
var output = new List <string>();
int width = (int)((double)asset.Width * outputConfig.Ratio);
int height = (int)((double)asset.Width * outputConfig.Ratio);
command = command.Replace("{outputFile}", outputFileInfo.FullName);
command = command.Replace("{width}", width.ToString());
command = command.Replace("{height}", height.ToString());
var args = ArgumentsParser.GetArguments(command);
if (!args?.Any() ?? true)
{
return(output);
}
var file = args[0];
args.RemoveAt(0);
var argStr = string.Join(" ", args);
var process = new System.Diagnostics.Process();
process.StartInfo = new System.Diagnostics.ProcessStartInfo(file, argStr);
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.RedirectStandardError = true;
process.OutputDataReceived += (sender, e) =>
{
output.Add(e.Data);
};
process.ErrorDataReceived += (sender, e) =>
{
output.Add(e.Data);
};
process.Start();
process.WaitForExit();
return(output);
}
public override void Resize(string sourceFile, string destinationFile, ImageAsset asset, OutputConfig outputConfig)
{
int sourceNominalWidth = asset.Width;
int sourceNominalHeight = asset.Height;
double resizeRatio = outputConfig.Ratio;
var fillColor = asset.FillColor;
if (string.IsNullOrEmpty(fillColor))
{
fillColor = outputConfig.FillColor;
}
// For SVG's we can optionally change the fill color on all paths
if (!string.IsNullOrEmpty(fillColor))
{
var svgText = File.ReadAllText(sourceFile);
foreach (var rxPattern in rxFillPatterns)
{
var matches = Regex.Matches(svgText, rxPattern);
foreach (Match match in matches)
{
var fillGroup = match.Groups?["fill"];
if (fillGroup != null)
{
// Replace the matched rx group with our override fill color
var a = svgText.Substring(0, fillGroup.Index);
var b = svgText.Substring(fillGroup.Index + fillGroup.Length);
svgText = a + outputConfig.FillColor.TrimEnd(';') + ";" + b;
}
}
}
// Write our changes out to a temp file so we don't alter the original
var tempFile = Path.GetTempFileName();
File.WriteAllText(tempFile, svgText);
sourceFile = tempFile;
}
var svg = new SkiaSharp.Extended.Svg.SKSvg();
svg.Load(sourceFile);
// Find the actual size of the SVG
var sourceActualWidth = svg.Picture.CullRect.Width;
var sourceActualHeight = svg.Picture.CullRect.Height;
// Figure out what the ratio to convert the actual image size to the nominal size is
var nominalRatio = Math.Max((double)sourceNominalWidth / (double)sourceActualWidth, (double)sourceNominalHeight / (double)sourceActualHeight);
// Multiply nominal ratio by the resize ratio to get our final ratio we actually adjust by
var adjustRatio = nominalRatio * resizeRatio;
// Figure out our scaled width and height to make a new canvas for
var scaledWidth = sourceActualWidth * adjustRatio;
var scaledHeight = sourceActualHeight * adjustRatio;
// Make a canvas of the target size to draw the svg onto
var bmp = new SKBitmap((int)scaledWidth, (int)scaledHeight);
var canvas = new SKCanvas(bmp);
// Make a matrix to scale the SVG
var matrix = SKMatrix.MakeScale((float)adjustRatio, (float)adjustRatio);
canvas.Clear(SKColors.Transparent);
// Draw the svg onto the canvas with our scaled matrix
canvas.DrawPicture(svg.Picture, ref matrix);
// Save the op
canvas.Save();
// Export the canvas
var img = SKImage.FromBitmap(bmp);
var data = img.Encode(SKEncodedImageFormat.Png, 100);
using (var fs = File.Open(destinationFile, FileMode.Create)) {
data.SaveTo(fs);
}
}
public abstract void Resize(string sourceFile, string destinationFile, ImageAsset asset, OutputConfig outputConfig);