private static async Task GenerateAssets(string[] files, DeviceType mode, string destinationDirectory,
int quality, string postfix)
{
// It fails to create the first file
var firstItem = files[0];
var initalLoad = new SKSvg();
initalLoad.Load(firstItem);
await PngHelper.GeneratePng((int)initalLoad.CanvasSize.Width, (int)initalLoad.CanvasSize.Height,
firstItem, "temp", 1);
File.Delete("temp");
foreach (var filepath in files.OrderBy(s => s).ToList())
{
Console.WriteLine($"Creating assets from {filepath}");
var filename = Path.GetFileNameWithoutExtension(filepath);
if (mode == DeviceType.iOS)
{
var generator = new IOSAssetGenerator();
await generator.CreateAsset(filepath, filename, destinationDirectory, quality, string.Empty);
}
else
{
var generator = new AndroidAssetGenerator();
await generator.CreateAsset(filepath, filename, destinationDirectory, quality, postfix);
}
}
}
public async Task CreateAsset(string filepath, string filename, string destinationDirectory, int quality,
string postfix = default)
{
for (var i = 1; i < 4; i++)
{
try
{
var svg = new SKSvg();
try
{
svg.Load(filepath);
}
catch (Exception e)
{
Console.WriteLine($"Unexpected error when parsing asset: {filepath}");
Console.WriteLine("Error: " + e.Message);
Console.WriteLine("Exiting with error 1");
Environment.Exit(1);
}
string newFilename;
if (i == 1)
{
newFilename = filename + ".png";
}
else
{
newFilename = filename + $"@{i}x.png";
}
var width = (int)(svg.CanvasSize.Width * i);
var height = (int)(svg.CanvasSize.Height * i);
await PngHelper.GeneratePng(width, height, filepath, Path.Combine(destinationDirectory, newFilename), quality);
Console.WriteLine($"Successfully created asset: {Path.GetFileName(newFilename)}");
}
catch (Exception e)
{
Console.WriteLine($"Failed to generate asset: {filename}");
Console.WriteLine("Error: " + e.Message);
Console.WriteLine("Exiting with error 1");
Environment.Exit(1);
}
}
}
public async Task CreateAsset(string filepath, string filename, string destinationDirectory, int quality,
string postfix)
{
var resourceTypes = new Dictionary <AndroidResourceType, float>
{
// Scale factors
{ AndroidResourceType.LDPI, 0.75f },
{ AndroidResourceType.MDPI, 1 },
{ AndroidResourceType.HDPI, 1.5f },
{ AndroidResourceType.XHDPI, 2f },
{ AndroidResourceType.XXHDPI, 3f },
{ AndroidResourceType.XXXHDPI, 4f }
};
foreach (var resourceType in resourceTypes)
{
try
{
var name = Enum.GetName(typeof(AndroidResourceType), resourceType.Key);
var resourceDirectoryName = string.IsNullOrEmpty(postfix)
? $"drawable-{name.ToLowerInvariant()}"
: $"drawable-{name.ToLowerInvariant()}-{postfix}";
var svg = new SKSvg();
try
{
svg.Load(filepath);
}
catch (Exception e)
{
Console.WriteLine($"Unexpected error when parsing asset: {filepath}");
Console.WriteLine("Error: " + e.Message);
Console.WriteLine("Exiting with error 1");
Environment.Exit(1);
}
var width = (int)(svg.CanvasSize.Width * resourceType.Value);
var height = (int)(svg.CanvasSize.Height * resourceType.Value);
// Cheap clamp
if (width < 1)
{
width = 1;
}
if (height < 1)
{
height = 1;
}
var filenameWithExtension = $"{filename}.png";
var resourceDir = Path.Combine(destinationDirectory, resourceDirectoryName);
if (!Directory.Exists(resourceDir))
{
Directory.CreateDirectory(resourceDir);
}
var finalPath = Path.Combine(resourceDir, filenameWithExtension);
await PngHelper.GeneratePng(width, height, filepath, finalPath, quality);
Console.WriteLine($"Successfully created asset: {finalPath}");
}
catch (Exception e)
{
Console.WriteLine($"Failed to generate asset: {filename}");
Console.WriteLine("Error: " + e.Message);
Console.WriteLine("Exiting with error 1");
Environment.Exit(1);
}
}
}