public static async Task RunVisualTestScore(Score score, string referenceFileName,
Settings?settings = null,
IList <double>?tracks = null, string?message = null)
{
if (settings == null)
{
settings = new Settings();
}
if (tracks == null)
{
tracks = new List <double> {
0
};
}
settings.Core.Engine = "skia";
settings.Core.EnableLazyLoading = false;
settings.Core.UseWorkers = false;
if (!referenceFileName.StartsWith("test-data/"))
{
referenceFileName = $"test-data/visual-tests/{referenceFileName}";
}
var referenceFileData =
await TestPlatform.LoadFile(referenceFileName);
var result = new List <RenderFinishedEventArgs>();
var totalWidth = 0.0;
var totalHeight = 0.0;
var task = new TaskCompletionSource <object>();
var renderer = new ScoreRenderer(settings);
renderer.Width = 1300;
renderer.PartialRenderFinished.On(e =>
{
if (e != null)
{
result.Add(e);
}
});
renderer.RenderFinished.On(e =>
{
totalWidth = e.TotalWidth;
totalHeight = e.TotalHeight;
result.Add(e);
task.SetResult(null);
});
renderer.Error.On((e) => { task.SetException(e); });
renderer.RenderScore(score, tracks);
if (await Task.WhenAny(task.Task, Task.Delay(2000)) == task.Task)
{
await CompareVisualResult(
totalWidth,
totalHeight,
result,
referenceFileName,
referenceFileData,
message
);
}
else
{
Assert.Fail("Rendering did not complete within timeout");
}
}
private static void Main(string[] args)
{
if (args.Length != 1)
{
Console.WriteLine("Usage AlphaTab.Samples.PngDump.exe Path");
return;
}
// load score
var score = ScoreLoader.LoadScoreFromBytes(File.ReadAllBytes(args[0]));
// render score with svg engine and desired rendering width
var settings = new Settings();
settings.Core.Engine = "skia";
var renderer = new ScoreRenderer(settings)
{
Width = 970
};
// iterate tracks
for (var i = 0; i < score.Tracks.Count; i++)
{
var track = score.Tracks[i];
// render track
Console.WriteLine("Rendering track {0} - {1}", i + 1, track.Name);
var images = new List <SKImage>();
var totalWidth = 0;
var totalHeight = 0;
renderer.PartialRenderFinished.On(r => { images.Add((SKImage)r.RenderResult); });
renderer.RenderFinished.On(r =>
{
totalWidth = (int)r.TotalWidth;
totalHeight = (int)r.TotalHeight;
});
renderer.RenderScore(score, new List <double> {
track.Index
});
// write png
var info = new FileInfo(args[0]);
var path = Path.Combine(info.DirectoryName,
Path.GetFileNameWithoutExtension(info.Name) + "-" + i + ".png");
using var full = SKSurface.Create(new SKImageInfo(totalWidth, totalHeight,
SKImageInfo.PlatformColorType, SKAlphaType.Premul));
var y = 0;
foreach (var image in images)
{
full.Canvas.DrawImage(image, new SKRect(0, 0, image.Width, image.Height),
new SKRect(0, y, image.Width, y + image.Height));
y += image.Height;
}
using var fullImage = full.Snapshot();
using var data = fullImage.Encode(SKEncodedImageFormat.Png, 100)
.AsStream(true);
using var fileStream =
new FileStream(path, FileMode.Create, FileAccess.Write);
data.CopyTo(fileStream);
}
}