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($"Save app icon took {sw.ElapsedMilliseconds}ms ({destination})");
return(new ResizedImageInfo {
Dpi = dpi, Filename = destination
});
}
public void Resize(DpiPath dpi, string destination)
{
var originalSize = GetOriginalSize();
var(scaledSize, scale) = GetScaledSize(originalSize, dpi.Scale);
var sw = new Stopwatch();
sw.Start();
// Allocate
using (var tempBitmap = new SKBitmap(scaledSize.Width, scaledSize.Height))
{
// Draw (copy)
using (var canvas = new SKCanvas(tempBitmap))
{
canvas.Clear(SKColors.Transparent);
canvas.Save();
canvas.Scale(scale, scale);
DrawUnscaled(canvas, scale);
}
// Save (encode)
using var stream = File.Create(destination);
tempBitmap.Encode(stream, SKEncodedImageFormat.Png, 100);
}
sw.Stop();
Logger?.Log($"Save Image took {sw.ElapsedMilliseconds}ms ({destination})");
}
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 ResizedImageInfo CopyFile(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 (Info.IsVector)
{
Rasterize(dpi, destination);
}
else
{
File.Copy(Info.Filename, destination, true);
}
return(new ResizedImageInfo {
Filename = destination, Dpi = dpi
});
}
void ProcessAppIcon(SharedImageInfo img, ConcurrentBag <ResizedImageInfo> resizedImages)
{
var appIconName = img.OutputName;
// Generate the actual bitmap app icons themselves
var appIconDpis = DpiPath.GetAppIconDpis(PlatformType, appIconName);
Log.LogMessage(MessageImportance.Low, $"App Icon");
// Apple and Android have special additional files to generate for app icons
if (PlatformType == "android")
{
Log.LogMessage(MessageImportance.Low, $"Android Adaptive Icon Generator");
appIconName = appIconName.ToLowerInvariant();
var adaptiveIconGen = new AndroidAdaptiveIconGenerator(img, appIconName, IntermediateOutputPath, this);
var iconsGenerated = adaptiveIconGen.Generate();
foreach (var iconGenerated in iconsGenerated)
{
resizedImages.Add(iconGenerated);
}
}
else if (PlatformType == "ios")
{
Log.LogMessage(MessageImportance.Low, $"iOS Icon Assets Generator");
var appleAssetGen = new AppleIconAssetsGenerator(img, appIconName, IntermediateOutputPath, appIconDpis, this);
var assetsGenerated = appleAssetGen.Generate();
foreach (var assetGenerated in assetsGenerated)
{
resizedImages.Add(assetGenerated);
}
}
Log.LogMessage(MessageImportance.Low, $"Generating App Icon Bitmaps for DPIs");
var appTool = new SkiaSharpAppIconTools(img, this);
Log.LogMessage(MessageImportance.Low, $"App Icon: Intermediate Path " + IntermediateOutputPath);
foreach (var dpi in appIconDpis)
{
Log.LogMessage(MessageImportance.Low, $"App Icon: " + dpi);
var destination = Resizer.GetFileDestination(img, dpi, IntermediateOutputPath)
.Replace("{name}", appIconName);
Log.LogMessage(MessageImportance.Low, $"App Icon Destination: " + destination);
appTool.Resize(dpi, Path.ChangeExtension(destination, ".png"));
}
}
public (SKSizeI, float) GetScaledSize(SKSize originalSize, DpiPath dpi)
{
if (dpi.Size.HasValue)
{
return(GetScaledSize(originalSize, dpi.Scale, dpi.Size.Value));
}
else
{
return(GetScaledSize(originalSize, dpi.Scale));
}
}
void ProcessImageCopy(ResizeImageInfo img, DpiPath originalScaleDpi, ConcurrentBag <ResizedImageInfo> resizedImages)
{
var resizer = new Resizer(img, IntermediateOutputPath, this);
LogDebugMessage($"Copying {img.Filename}");
var r = resizer.CopyFile(originalScaleDpi, InputsFile);
resizedImages.Add(r);
LogDebugMessage($"Copied {img.Filename}");
}
void ProcessImageCopy(ResizeImageInfo img, DpiPath originalScaleDpi, ConcurrentBag <ResizedImageInfo> resizedImages)
{
var resizer = new Resizer(img, IntermediateOutputPath, this);
LogDebugMessage($"Copying {img.Filename}");
var r = resizer.CopyFile(originalScaleDpi, InputsFile, PlatformType.Equals("android", StringComparison.OrdinalIgnoreCase));
resizedImages.Add(r);
LogDebugMessage($"Copied {img.Filename}");
}
void ProcessImageCopy(SharedImageInfo img, DpiPath originalScaleDpi, ConcurrentBag <ResizedImageInfo> resizedImages)
{
var resizer = new Resizer(img, IntermediateOutputPath, this);
Log.LogMessage(MessageImportance.Low, $"Copying {img.Filename}");
var r = resizer.CopyFile(originalScaleDpi, InputsFile, PlatformType.ToLower().Equals("android"));
resizedImages.Add(r);
Log.LogMessage(MessageImportance.Low, $"Copied {img.Filename}");
}
public static string GetFileDestination(ResizeImageInfo info, DpiPath dpi, string intermediateOutputPath)
{
var fullIntermediateOutputPath = new DirectoryInfo(intermediateOutputPath);
var destination = Path.Combine(fullIntermediateOutputPath.FullName, dpi.Path, info.OutputName + dpi.FileSuffix + info.OutputExtension);
var fileInfo = new FileInfo(destination);
if (!fileInfo.Directory.Exists)
{
fileInfo.Directory.Create();
}
return(destination);
}
public ResizedImageInfo Generate()
{
string destinationFolder = IntermediateOutputPath;
string fileName = Path.GetFileNameWithoutExtension(Info.OutputName);
string destination = Path.Combine(destinationFolder, $"{fileName}.ico");
Directory.CreateDirectory(destinationFolder);
Logger.Log($"Generating ICO: {destination}");
var tools = new SkiaSharpAppIconTools(Info, Logger);
var dpi = new DpiPath(fileName, 1.0m, size: new SKSize(64, 64));
MemoryStream memoryStream = new MemoryStream();
tools.Resize(dpi, destination, () => memoryStream);
memoryStream.Position = 0;
int numberOfImages = 1;
using BinaryWriter writer = new BinaryWriter(File.Create(destination));
writer.Write((short)0x0); // Reserved. Must always be 0.
writer.Write((short)0x1); // Specifies image type: 1 for icon (.ICO) image
writer.Write((short)numberOfImages); // Specifies number of images in the file.
writer.Write((byte)dpi.Size.Value.Width);
writer.Write((byte)dpi.Size.Value.Height);
writer.Write((byte)0x0); // Specifies number of colors in the color palette
writer.Write((byte)0x0); // Reserved. Should be 0
writer.Write((short)0x1); // Specifies color planes. Should be 0 or 1
writer.Write((short)0x8); // Specifies bits per pixel.
writer.Write((int)memoryStream.Length); // Specifies the size of the image's data in bytes
int offset = 6 + (16 * numberOfImages); // + length of previous images
writer.Write(offset); // Specifies the offset of BMP or PNG data from the beginning of the ICO/CUR file
// write png data for each image
memoryStream.CopyTo(writer.BaseStream);
writer.Flush();
return(new ResizedImageInfo {
Dpi = dpi, Filename = destination
});
}
public ResizedImageInfo CopyFile(DpiPath dpi, string inputsFile, bool isAndroid = false)
{
var destination = GetFileDestination(dpi);
var androidVector = false;
if (isAndroid && Info.IsVector && !Info.Resize)
{
// Update destination to be .xml file
destination = Path.ChangeExtension(destination, ".xml");
androidVector = true;
}
if (IsUpToDate(Info.Filename, destination, inputsFile, Logger))
{
return new ResizedImageInfo {
Filename = destination, Dpi = dpi
}
}
;
if (androidVector)
{
Logger.Log("Converting SVG to Android Drawable Vector: " + Info.Filename);
// Transform into an android vector drawable
var convertErr = Svg2VectorDrawable.Svg2Vector.Convert(Info.Filename, destination);
if (!string.IsNullOrEmpty(convertErr))
{
throw new Svg2AndroidDrawableConversionException(convertErr, Info.Filename);
}
}
else
{
// Otherwise just copy it straight
File.Copy(Info.Filename, destination, true);
}
return(new ResizedImageInfo {
Filename = destination, Dpi = dpi
});
}
public void Resize(DpiPath dpi, string destination, double additionalScale = 1.0, bool dpiSizeIsAbsolute = false)
{
var sw = new Stopwatch();
sw.Start();
var originalSize = GetOriginalSize();
var absoluteSize = dpiSizeIsAbsolute ? dpi.Size : null;
var(scaledSize, scale) = GetScaledSize(originalSize, dpi, absoluteSize);
var(canvasSize, _) = GetCanvasSize(dpi, null, this);
using (var tempBitmap = new SKBitmap(canvasSize.Width, canvasSize.Height))
{
Draw(tempBitmap, additionalScale, originalSize, scale, scaledSize);
Save(destination, tempBitmap);
}
sw.Stop();
Logger?.Log($"Save Image took {sw.ElapsedMilliseconds}ms ({destination})");
}
void Draw(SKBitmap tempBitmap, DpiPath dpi, SKSize unscaledCanvasSize)
{
var canvasSize = tempBitmap.Info.Size;
using var canvas = new SKCanvas(tempBitmap);
canvas.Clear(Info.Color ?? SKColors.Transparent);
// draw background
if (backgroundTools is not null)
{
canvas.Save();
var backgroundOriginalSize = backgroundTools.GetOriginalSize();
var(bgScaledSize, bgScale) = backgroundTools.GetScaledSize(backgroundOriginalSize, dpi, unscaledCanvasSize);
// center the background
canvas.Translate(
(canvasSize.Width - bgScaledSize.Width) / 2,
(canvasSize.Height - bgScaledSize.Height) / 2);
// scale the background to the desired size
canvas.Scale(bgScale, bgScale);
// draw
backgroundTools.DrawUnscaled(canvas, bgScale);
canvas.Restore();
}
// draw foreground
if (foregroundTools is not null)
{
var foregroundOriginalSize = foregroundTools.GetOriginalSize();
var(fgScaledSize, fgScale) = foregroundTools.GetScaledSize(foregroundOriginalSize, dpi, unscaledCanvasSize);
// center the foreground
canvas.Translate(
(canvasSize.Width - fgScaledSize.Width) / 2,
(canvasSize.Height - fgScaledSize.Height) / 2);
// scale the background to the desired size
canvas.Scale(fgScale, fgScale);
// add any foreground scale on top
if (Info.ForegroundScale != 1.0)
{
var userFgScale = (float)Info.ForegroundScale;
// add the user scale to the main scale
fgScale *= userFgScale;
// work out the center as if the canvas was exactly the same size as the foreground
var fgCenterX = foregroundOriginalSize.Width / 2;
var fgCenterY = foregroundOriginalSize.Height / 2;
// scale to the user scale, centering
canvas.Scale(userFgScale, userFgScale, fgCenterX, fgCenterY);
}
// draw
foregroundTools.DrawUnscaled(canvas, fgScale);
}
}
public override System.Threading.Tasks.Task ExecuteAsync()
{
var images = ResizeImageInfo.Parse(Images);
var dpis = DpiPath.GetDpis(PlatformType);
if (dpis == null || dpis.Length <= 0)
{
return(System.Threading.Tasks.Task.CompletedTask);
}
var originalScaleDpi = DpiPath.GetOriginal(PlatformType);
var resizedImages = new ConcurrentBag <ResizedImageInfo>();
this.ParallelForEach(images, img =>
{
try
{
var opStopwatch = new Stopwatch();
opStopwatch.Start();
string op;
if (img.IsAppIcon)
{
// App icons are special
ProcessAppIcon(img, resizedImages);
op = "App Icon";
}
else
{
// By default we resize, but let's make sure
if (img.Resize)
{
ProcessImageResize(img, dpis, resizedImages);
op = "Resize";
}
else
{
// Otherwise just copy the thing over to the 1.0 scale
ProcessImageCopy(img, originalScaleDpi, resizedImages);
op = "Copy";
}
}
opStopwatch.Stop();
LogDebugMessage($"{op} took {opStopwatch.ElapsedMilliseconds}ms");
}
catch (Exception ex)
{
LogWarning("MAUI0000", ex.ToString());
throw;
}
});
if (PlatformType == "tizen")
{
var tizenResourceXmlGenerator = new TizenResourceXmlGenerator(IntermediateOutputPath, Logger);
tizenResourceXmlGenerator.Generate();
}
var copiedResources = new List <TaskItem>();
foreach (var img in resizedImages)
{
var attr = new Dictionary <string, string>();
string itemSpec = Path.GetFullPath(img.Filename);
// Fix the item spec to be relative for mac
if (bool.TryParse(IsMacEnabled, out bool isMac) && isMac)
{
itemSpec = img.Filename;
}
// Add DPI info to the itemspec so we can use it in the targets
attr.Add("_ResizetizerDpiPath", img.Dpi.Path);
attr.Add("_ResizetizerDpiScale", img.Dpi.Scale.ToString("0.0", CultureInfo.InvariantCulture));
copiedResources.Add(new TaskItem(itemSpec, attr));
}
CopiedResources = copiedResources.ToArray();
return(System.Threading.Tasks.Task.CompletedTask);
}
public ResizedImageInfo Resize(DpiPath dpi, string destination, Func <Stream> getStream = null)
{
var sw = new Stopwatch();
sw.Start();
var(bgScaledSize, bgScale) = backgroundTools.GetScaledSize(backgroundOriginalSize, dpi);
// Make the canvas size match the desired size
var canvasSize = bgScaledSize;
if (dpi.Size is SKSize size && size.Width != size.Height)
{
var scale = (float)dpi.Scale;
canvasSize = new SKSizeI((int)(size.Width * scale), (int)(size.Height * scale));
}
// Allocate
using (var tempBitmap = new SKBitmap(canvasSize.Width, canvasSize.Height))
{
// Draw (copy)
using (var canvas = new SKCanvas(tempBitmap))
{
canvas.Clear(Info.Color ?? SKColors.Transparent);
canvas.Save();
canvas.Translate(
(canvasSize.Width - bgScaledSize.Width) / 2,
(canvasSize.Height - bgScaledSize.Height) / 2);
canvas.Scale(bgScale, bgScale);
backgroundTools.DrawUnscaled(canvas, bgScale);
canvas.Restore();
if (hasForeground)
{
var userFgScale = (float)Info.ForegroundScale;
// get the ratio to make the foreground fill the background
var fitRatio = bgScaledSize.Width / foregroundOriginalSize.Width;
// calculate the scale for the foreground to fit the background exactly
var(fgScaledSize, fgScale) = foregroundTools.GetScaledSize(foregroundOriginalSize, (decimal)fitRatio);
//Logger.Log("\tdpi.Size: " + dpi.Size);
//Logger.Log("\tdpi.Scale: " + dpi.Scale);
//Logger.Log("\tbgScaledSize: " + bgScaledSize);
//Logger.Log("\tbgScale: " + bgScale);
//Logger.Log("\tforegroundOriginalSize: " + foregroundOriginalSize);
//Logger.Log("\tfgScaledSize: " + fgScaledSize);
//Logger.Log("\tfgScale: " + fgScale);
//Logger.Log("\tuserFgScale: " + userFgScale);
// now work out the center as if the canvas was exactly the same size as the foreground
var fgScaledSizeCenterX = foregroundOriginalSize.Width / 2;
var fgScaledSizeCenterY = foregroundOriginalSize.Height / 2;
//Logger.Log("\tfgScaledSizeCenterX: " + fgScaledSizeCenterX);
//Logger.Log("\tfgScaledSizeCenterY: " + fgScaledSizeCenterY);
// center the foreground
canvas.Translate(
(canvasSize.Width - fgScaledSize.Width) / 2,
(canvasSize.Height - fgScaledSize.Height) / 2);
// scale so the forground is the same size as the background
canvas.Scale(fgScale, fgScale);
// scale to the user scale, centering
canvas.Scale(userFgScale, userFgScale, fgScaledSizeCenterX, fgScaledSizeCenterY);
foregroundTools.DrawUnscaled(canvas, fgScale * userFgScale);
}
}
// Save (encode)
if (getStream is not null)
{
var stream = getStream();
tempBitmap.Encode(stream, SKEncodedImageFormat.Png, 100);
}
else
{
using var wrapper = File.Create(destination);
tempBitmap.Encode(wrapper, SKEncodedImageFormat.Png, 100);
}
}
sw.Stop();
Logger?.Log($"Save app icon took {sw.ElapsedMilliseconds}ms ({destination})");
return(new ResizedImageInfo {
Dpi = dpi, Filename = destination
});
}
public string GetFileDestination(DpiPath dpi) => GetFileDestination(Info, dpi, IntermediateOutputPath);
public (SKSizeI, float) GetScaledSize(SKSize originalSize, DpiPath dpi, SKSize?absoluteSize = null) =>
System.Threading.Tasks.Task DoExecute()
{
Svg.SvgDocument.SkipGdiPlusCapabilityCheck = true;
var images = ParseImageTaskItems(SharedImages);
var dpis = DpiPath.GetDpis(PlatformType);
if (dpis == null || dpis.Length <= 0)
{
return(System.Threading.Tasks.Task.CompletedTask);
}
var originalScaleDpi = DpiPath.GetOriginal(PlatformType);
var resizedImages = new ConcurrentBag <ResizedImageInfo>();
System.Threading.Tasks.Parallel.ForEach(images, img =>
{
try
{
var opStopwatch = new Stopwatch();
opStopwatch.Start();
string op;
if (img.IsAppIcon)
{
// App icons are special
ProcessAppIcon(img, resizedImages);
op = "App Icon";
}
else
{
// By default we resize, but let's make sure
if (img.Resize)
{
ProcessImageResize(img, dpis, resizedImages);
op = "Resize";
}
else
{
// Otherwise just copy the thing over to the 1.0 scale
ProcessImageCopy(img, originalScaleDpi, resizedImages);
op = "Copy";
}
}
opStopwatch.Stop();
Log.LogMessage(MessageImportance.Low, $"{op} took {opStopwatch.ElapsedMilliseconds}ms");
}
catch (Exception ex)
{
Log.LogErrorFromException(ex);
throw;
}
});
var copiedResources = new List <TaskItem>();
foreach (var img in resizedImages)
{
var attr = new Dictionary <string, string>();
string itemSpec = Path.GetFullPath(img.Filename);
// Fix the item spec to be relative for mac
if (bool.TryParse(IsMacEnabled, out bool isMac) && isMac)
{
itemSpec = img.Filename;
}
// Add DPI info to the itemspec so we can use it in the targets
attr.Add("_ResizetizerDpiPath", img.Dpi.Path);
attr.Add("_ResizetizerDpiScale", img.Dpi.Scale.ToString());
copiedResources.Add(new TaskItem(itemSpec, attr));
}
CopiedResources = copiedResources.ToArray();
return(System.Threading.Tasks.Task.CompletedTask);
}
