public ResizedImageInfo Resize(DpiPath dpi, string inputsFile)
{
var destination = GetFileDestination(dpi);
if (Info.IsVector)
{
destination = Path.ChangeExtension(destination, ".png");
}
if (IsUpToDate(Info.Filename, destination, inputsFile, Logger))
{
return new ResizedImageInfo {
Filename = destination, Dpi = dpi
}
}
;
if (tools == null)
{
tools = SkiaSharpTools.Create(Info.IsVector, Info.Filename, Info.BaseSize, Info.TintColor, Logger);
}
tools.Resize(dpi, destination);
return(new ResizedImageInfo {
Filename = destination, Dpi = dpi
});
}
}
public ResizedImageInfo Resize(DpiPath dpi, string destination, Func <Stream>?getStream = null)
{
var sw = new Stopwatch();
sw.Start();
// 1. if an explicit size was given by the type of image, use that
// 2. if an explicit size was given in the csproj, use that
// 3. try determine the best size based on the background then foreground
var(canvasSize, unscaledCanvasSize) = SkiaSharpTools.GetCanvasSize(
dpi,
Info.BaseSize,
backgroundTools ?? foregroundTools);
using (var tempBitmap = new SKBitmap(canvasSize.Width, canvasSize.Height))
{
Draw(tempBitmap, dpi, unscaledCanvasSize);
Save(tempBitmap, destination, getStream);
}
sw.Stop();
Logger?.Log($"Save app icon took {sw.ElapsedMilliseconds}ms ({destination})");
return(new ResizedImageInfo {
Dpi = dpi, Filename = destination
});
}
void ProcessBackground(List <ResizedImageInfo> results, DirectoryInfo fullIntermediateOutputPath)
{
var backgroundFile = Info.Filename;
var backgroundExists = File.Exists(backgroundFile);
var backgroundDestFilename = AppIconName + "_background.png";
if (backgroundExists)
{
Logger.Log("Converting Background SVG to PNG: " + backgroundFile);
}
else
{
Logger.Log("Background was not found (will manufacture): " + backgroundFile);
}
foreach (var dpi in DpiPath.Android.AppIconParts)
{
var dir = Path.Combine(fullIntermediateOutputPath.FullName, dpi.Path);
var destination = Path.Combine(dir, backgroundDestFilename);
Directory.CreateDirectory(dir);
Logger.Log($"App Icon Background Part: " + destination);
if (backgroundExists)
{
// resize the background
var tools = SkiaSharpTools.Create(Info.IsVector, Info.Filename, dpi.Size, Info.Color, null, Logger);
tools.Resize(dpi, destination, dpiSizeIsAbsolute: true);
}
else
{
// manufacture
var tools = SkiaSharpTools.CreateImaginary(Info.Color, Logger);
tools.Resize(dpi, destination);
}
results.Add(new ResizedImageInfo {
Dpi = dpi, Filename = destination
});
}
}
public SkiaSharpAppIconTools(ResizeImageInfo info, ILogger logger)
{
Info = info;
Logger = logger;
AppIconName = info.OutputName;
hasForeground = File.Exists(info.ForegroundFilename);
if (hasForeground)
{
foregroundTools = SkiaSharpTools.Create(info.ForegroundIsVector, info.ForegroundFilename, null, info.TintColor, logger);
}
backgroundTools = SkiaSharpTools.Create(info.IsVector, info.Filename, null, null, logger);
backgroundOriginalSize = backgroundTools.GetOriginalSize();
if (hasForeground)
{
foregroundOriginalSize = foregroundTools.GetOriginalSize();
}
}
public SkiaSharpAppIconTools(ResizeImageInfo info, ILogger?logger)
{
Info = info;
Logger = logger;
AppIconName = info.OutputName;
var hasBackground = !string.IsNullOrWhiteSpace(info.Filename) && File.Exists(info.Filename);
var hasForeground = !string.IsNullOrWhiteSpace(info.ForegroundFilename) && File.Exists(info.ForegroundFilename);
if (!hasBackground && !hasForeground)
{
throw new InvalidOperationException("An app icon needs at least one image.");
}
if (hasBackground)
{
backgroundTools = SkiaSharpTools.Create(info.IsVector, info.Filename, null, null, null, logger);
}
if (hasForeground)
{
foregroundTools = SkiaSharpTools.Create(info.ForegroundIsVector, info.ForegroundFilename, null, null, info.TintColor, logger);
}
}
public static (SKSizeI Scaled, SKSize Unscaled) GetCanvasSize(DpiPath dpi, SKSize?baseSize = null, SkiaSharpTools baseTools = null)
{
// if an explicit size was given by the type of image, use that
if (dpi.Size is SKSize size)
{
var scale = (float)dpi.Scale;
var scaled = new SKSizeI(
(int)(size.Width * scale),
(int)(size.Height * scale));
return(scaled, size);
}
// if an explicit size was given in the csproj, use that
if (baseSize is SKSize bs)
{
var scale = (float)dpi.Scale;
var scaled = new SKSizeI(
(int)(bs.Width * scale),
(int)(bs.Height * scale));
return(scaled, bs);
}
// try determine the best size based on the loaded image
if (baseTools is not null)
{
var baseOriginalSize = baseTools.GetOriginalSize();
var(baseScaledSize, _) = baseTools.GetScaledSize(baseOriginalSize, dpi.Scale);
return(baseScaledSize, baseOriginalSize);
}
throw new InvalidOperationException("The canvas size cannot be calculated if there is no size to start from (DPI size, BaseSize or image size).");
}
public IEnumerable <ResizedImageInfo> Generate()
{
var results = new List <ResizedImageInfo>();
var fullIntermediateOutputPath = new DirectoryInfo(IntermediateOutputPath);
var backgroundFile = Info.Filename;
var backgroundIsVector = UseVectors && Info.IsVector;
var backgroundExt = backgroundIsVector ? ".xml" : ".png";
var backgroundDestFilename = AppIconName + "_background" + backgroundExt;
var foregroundFile = Info.ForegroundFilename;
var foregroundExists = File.Exists(foregroundFile);
var foregroundIsVector = !foregroundExists || (UseVectors && Info.ForegroundIsVector);
var foregroundExt = foregroundIsVector ? ".xml" : ".png";
var foregroundDestFilename = AppIconName + "_foreground" + foregroundExt;
if (backgroundIsVector)
{
Logger.Log("Converting Background SVG to Android Drawable Vector: " + backgroundFile);
var dir = Path.Combine(fullIntermediateOutputPath.FullName, "drawable-v24");
var destination = Path.Combine(dir, backgroundDestFilename);
Directory.CreateDirectory(dir);
Svg2VectorDrawable.Svg2Vector.Convert(backgroundFile, destination);
results.Add(new ResizedImageInfo {
Dpi = new DpiPath("drawable-v24", 1, "_background"), Filename = destination
});
}
else
{
Logger.Log("Converting Background SVG to PNG: " + backgroundFile);
foreach (var dpi in DpiPath.Android.AppIconParts)
{
var dir = Path.Combine(fullIntermediateOutputPath.FullName, dpi.Path);
var destination = Path.Combine(dir, backgroundDestFilename);
Directory.CreateDirectory(dir);
Logger.Log($"App Icon Background Part: " + destination);
var tools = SkiaSharpTools.Create(Info.IsVector, Info.Filename, dpi.Size, null, Logger);
tools.Resize(dpi, destination);
results.Add(new ResizedImageInfo {
Dpi = dpi, Filename = destination
});
}
}
Logger.Log("Looking for Foreground File: " + foregroundFile);
var foregroundDestinationDir = Path.Combine(fullIntermediateOutputPath.FullName, "drawable");
var foregroundDestination = Path.Combine(foregroundDestinationDir, foregroundDestFilename);
Directory.CreateDirectory(foregroundDestinationDir);
if (foregroundExists)
{
if (foregroundIsVector)
{
Logger.Log("Converting Foreground SVG to Android Drawable Vector: " + foregroundFile);
Svg2VectorDrawable.Svg2Vector.Convert(foregroundFile, foregroundDestination);
results.Add(new ResizedImageInfo {
Dpi = new DpiPath("drawable", 1, "_foreground"), Filename = foregroundDestination
});
}
else
{
Logger.Log("Converting Foreground SVG to PNG: " + foregroundFile);
foreach (var dpi in DpiPath.Android.AppIconParts)
{
var dir = Path.Combine(fullIntermediateOutputPath.FullName, dpi.Path);
var destination = Path.Combine(dir, foregroundDestFilename);
Directory.CreateDirectory(dir);
Logger.Log($"App Icon Foreground Part: " + destination);
var tools = SkiaSharpTools.Create(Info.ForegroundIsVector, Info.ForegroundFilename, dpi.Size, null, Logger);
tools.Resize(dpi, destination);
results.Add(new ResizedImageInfo {
Dpi = dpi, Filename = destination
});
}
}
}
else
{
Logger.Log("Foreground was not found: " + foregroundFile);
File.WriteAllText(foregroundDestination, EmptyVectorDrawable);
}
// process adaptive icon xml
{
var adaptiveIconXmlStr = AdaptiveIconDrawableXml
.Replace("{name}", AppIconName)
.Replace("{backgroundType}", backgroundIsVector ? "drawable" : "mipmap")
.Replace("{foregroundType}", foregroundIsVector ? "drawable" : "mipmap");
var dir = Path.Combine(fullIntermediateOutputPath.FullName, "mipmap-anydpi-v26");
var adaptiveIconDestination = Path.Combine(dir, AppIconName + ".xml");
var adaptiveIconRoundDestination = Path.Combine(dir, AppIconName + "_round.xml");
Directory.CreateDirectory(dir);
// Write out the adaptive icon xml drawables
File.WriteAllText(adaptiveIconDestination, adaptiveIconXmlStr);
File.WriteAllText(adaptiveIconRoundDestination, adaptiveIconXmlStr);
results.Add(new ResizedImageInfo {
Dpi = new DpiPath("mipmap-anydpi-v26", 1), Filename = adaptiveIconDestination
});
results.Add(new ResizedImageInfo {
Dpi = new DpiPath("mipmap-anydpi-v26", 1, "_round"), Filename = adaptiveIconRoundDestination
});
}
return(results);
}
