private string GenerateThumbnailId(string thumbnailId = null)
{
var ext = Common.GetImageExtension(FileFormat);
if (ext == null)
{
throw new MediaUnsupportedException(string.Format("FileFormat: {0}", FileFormat));
}
string id;
if (!string.IsNullOrEmpty(thumbnailId))
{
id = thumbnailId;
}
else
{
var fileName = new StringBuilder(Path.GetFileNameWithoutExtension(_source.Name));
var ci = CultureInfo.InvariantCulture;
fileName.Append("[");
fileName.Append(Size.Width.ToString(ci));
fileName.Append("x");
fileName.Append(Size.Height.ToString(ci));
if (ColorManagement != null)
{
fileName.Append(",cm(");
var sourceProfile = ColorManagement.GetProfile(ColorManagement, _source.Params.PixelFormat.ColorSpace);
if (sourceProfile != null)
{
fileName.Append(AjaxControls.Common.CalculateMD5(Encoding.UTF8.GetBytes(sourceProfile.Description)));
}
var targetProfile = ColorManagement.GetTargetProfile(ColorManagement);
if (targetProfile != null)
{
fileName.Append(",");
fileName.Append(AjaxControls.Common.CalculateMD5(Encoding.UTF8.GetBytes(targetProfile.Description)));
}
fileName.Append(")");
}
if (ResizeMode != Transforms.ResizeMode.Resize)
{
fileName.Append(",");
fileName.Append(ResizeMode);
}
fileName.Append("]");
id = fileName.ToString().ToLowerInvariant();
}
return(string.Format("{0}.{1}", id, ext));
}
public void RenderLayers(PipelineElement writer,
IEnumerable <Layer> layers,
SizeF workspace,
float dpi = 300f,
ColorSpace colorSpace = ColorSpace.Rgb,
Color backgroundColor = null,
bool isPreview = false,
SizeF document = new SizeF(),
ColorManagement colorManagement = null,
float?targetDpi = null
)
{
if (workspace.Width <= 0 || workspace.Height <= 0)
{
throw new ArgumentException(null, "workspace");
}
if (dpi <= 0)
{
throw new ArgumentOutOfRangeException("dpi", dpi, Exceptions.DpiOutOfRange);
}
colorSpace = colorSpace == ColorSpace.Unknown ? ColorSpace.Rgb : colorSpace;
if (colorSpace != ColorSpace.Cmyk && colorSpace != ColorSpace.Grayscale && colorSpace != ColorSpace.Rgb)
{
throw new ArgumentException(null, "colorSpace");
}
// Turn on proofing if (colorManagement != null && isPreview)
var initialTargetColorSpace = colorManagement != null ? colorManagement.TargetColorSpace : null;
if (colorManagement != null)
{
colorManagement.TargetColorSpace = isPreview ? new ColorSpace?(colorSpace) : null;
colorSpace = isPreview ? ColorSpace.Rgb : colorSpace;
}
backgroundColor = backgroundColor ?? ColorManagement.GetWhiteColor(colorSpace);
var format = ColorManagement.GetPixelFormat(colorSpace);
var profile = ColorManagement.GetProfile(colorManagement, colorSpace, isPreview);
var pixelSize = new Size(
Common.ConvertPointsToPixels(dpi, workspace.Width),
Common.ConvertPointsToPixels(dpi, workspace.Height));
var pdfWriter = writer as PdfWriter;
if (pdfWriter != null)
{
var docWidth = pixelSize.Width;
var docHeight = pixelSize.Height;
var scale = 1f;
var offset = PointF.Empty;
if (!document.IsEmpty)
{
docWidth = Common.ConvertPointsToPixels(dpi, document.Width);
docHeight = Common.ConvertPointsToPixels(dpi, document.Height);
var scaleX = docWidth / (float)pixelSize.Width;
var scaleY = docHeight / (float)pixelSize.Height;
scale = System.Math.Min(scaleX, scaleY);
if (Utils.EqualsOfFloatNumbers(scaleX, scaleY, 0.001f))
{
scale = (float)System.Math.Round(scale, 2);
docWidth = Common.ConvertPointsToPixels(dpi, workspace.Width * scale);
docHeight = Common.ConvertPointsToPixels(dpi, workspace.Height * scale);
}
else
{
offset.X = (docWidth - pixelSize.Width * scale) / 2f;
offset.Y = (docHeight - pixelSize.Height * scale) / 2f;
}
}
pdfWriter.AddPage(docWidth, docHeight, dpi, dpi, backgroundColor, profile);
using (var graphics = pdfWriter.GetGraphics())
{
var path = new Path();
path.DrawRectangle(0, 0, pixelSize.Width, pixelSize.Height);
graphics.Transform.Scale(scale, scale, MatrixOrder.Append);
graphics.Transform.Translate(offset.X, offset.Y, MatrixOrder.Append);
graphics.ClippingPaths.Add(path);
var vObjects = GetVObjects(layers, workspace).ToArray();
using (var imageParams = new ImageGenerator(pixelSize, format, backgroundColor)
{
DpiX = dpi, DpiY = dpi, ColorProfile = profile
})
{
if (colorManagement != null)
{
colorManagement.InitColorMap(from v in vObjects from c in v.GetColors() select c, imageParams);
}
DrawVObjects(vObjects, graphics, imageParams, colorManagement);
}
graphics.ClippingPaths.Remove(path);
graphics.Transform.Translate(-offset.X, -offset.Y, MatrixOrder.Append);
graphics.Transform.Scale(1 / scale, 1 / scale, MatrixOrder.Append);
}
}
else
{
var vObjectGroups = new List <List <VObject> >();
List <VObject> currentVObjectGroup = null;
List <VObject> currentImageVObjectGroup = null;
var vObjects = GetVObjects(layers, workspace).ToArray();
foreach (var vObject in vObjects)
{
if (vObject is IPipelineExtender)
{
if (currentVObjectGroup != null)
{
vObjectGroups.Add(currentVObjectGroup);
currentVObjectGroup = null;
}
if (currentImageVObjectGroup == null)
{
currentImageVObjectGroup = new List <VObject>();
}
currentImageVObjectGroup.Add(vObject);
}
else
{
if (currentImageVObjectGroup != null)
{
vObjectGroups.Add(currentImageVObjectGroup);
currentImageVObjectGroup = null;
}
if (currentVObjectGroup == null)
{
currentVObjectGroup = new List <VObject>();
}
currentVObjectGroup.Add(vObject);
}
}
if (currentVObjectGroup != null)
{
vObjectGroups.Add(currentVObjectGroup);
}
if (currentImageVObjectGroup != null)
{
vObjectGroups.Add(currentImageVObjectGroup);
}
var pipeline = new Pipeline();
var deps = new List <IDisposable>();
var scale = dpi / targetDpi ?? 1;
try
{
var bitmapGenerator = new ImageGenerator(pixelSize.Width, pixelSize.Height, format, backgroundColor)
{
DpiX = dpi / scale,
DpiY = dpi / scale,
ColorProfile = profile
};
if (colorManagement != null)
{
colorManagement.InitColorMap(from v in vObjects from c in v.GetColors() select c, bitmapGenerator);
}
pipeline.Add(bitmapGenerator);
foreach (var group in vObjectGroups)
{
if (group.Count == 0)
{
break;
}
if (group.FirstOrDefault() is IPipelineExtender)
{
foreach (var vObject in group)
{
IEnumerable <IDisposable> vObjectDeps;
((IPipelineExtender)vObject).ExtendPipeline(pipeline, bitmapGenerator, colorManagement, scale, out vObjectDeps);
deps.AddRange(vObjectDeps);
}
}
else
{
var groupVObjects = group.ToArray();
var drawer = new Drawer();
drawer.Draw += (sender, e) =>
{
if (!Utils.EqualsOfFloatNumbers(scale, 1))
{
e.Graphics.Transform.Scale(scale, scale);
}
DrawVObjects(groupVObjects, e.Graphics, bitmapGenerator, colorManagement);
if (!Utils.EqualsOfFloatNumbers(scale, 1))
{
e.Graphics.Transform.Scale(1 / scale, 1 / scale);
}
};
pipeline.Add(drawer);
}
}
// Check if writer support pixel format with or without alpha.
if (!writer.IsPixelFormatSupported(bitmapGenerator.PixelFormat) &&
writer.IsPixelFormatSupported(PixelFormat.DiscardAlpha(bitmapGenerator.PixelFormat)))
{
pipeline.Add(new RemoveAlpha(backgroundColor));
}
if (!Utils.EqualsOfFloatNumbers(scale, 1))
{
pipeline.Add(new ResolutionModifier(dpi, dpi));
}
pipeline.Add(writer);
pipeline.Run();
}
finally
{
pipeline.Remove(writer);
pipeline.DisposeAllElements();
if (deps != null)
{
foreach (var dep in deps)
{
dep.Dispose();
}
}
if (colorManagement != null)
{
colorManagement.TargetColorSpace = initialTargetColorSpace;
}
}
}
if (colorManagement != null)
{
colorManagement.TargetColorSpace = initialTargetColorSpace;
}
}
private static Bitmap GetTextBitmap(BaseTextVObject vObject, float dpi, Point location, bool extendBitmap, out string id)
{
if (vObject == null)
{
throw new ArgumentNullException("vObject");
}
if (dpi <= 0)
{
throw new ArgumentOutOfRangeException("dpi");
}
var rect = vObject.MeasureText(dpi);
var width = (int)System.Math.Ceiling(rect.Width + (extendBitmap ? location.X * 2 : 0));
var height = (int)System.Math.Ceiling(rect.Height + (extendBitmap ? location.Y * 2 : 0));
if (rect.IsEmpty)
{
throw new InvalidOperationException("TextRenderer cannot write a text bitmap because it is empty");
}
var scale = dpi / vObject.TargetDpi ?? 1;
var colorManagement = vObject.GetColorManagement(true);
var textBitmap = new Bitmap(width, height, ColorManagement.GetPixelFormat(_colorSpace), RgbColor.Transparent)
{
DpiX = dpi / scale,
DpiY = dpi / scale,
ColorProfile = ColorManagement.GetProfile(colorManagement, _colorSpace, true)
};
using (var graphics = textBitmap.GetAdvancedGraphics())
{
graphics.Transform.Translate(-rect.X + location.X, -rect.Y + location.Y);
if (!Utils.EqualsOfFloatNumbers(scale, 1))
{
graphics.Transform.Scale(scale, scale);
}
var angle = vObject.Angle;
var opacity = vObject.Opacity;
var curvedText = vObject as CurvedTextVObject;
if (curvedText != null)
{
curvedText.TextPath.RotateAt(-angle, curvedText.TextPath.GetFirstPoint());
}
vObject.Transform.Update(null, null, null, null, 0);
vObject.Opacity = 1;
vObject.DrawText(graphics, textBitmap, colorManagement);
if (curvedText != null)
{
curvedText.TextPath.RotateAt(angle, curvedText.TextPath.GetFirstPoint());
}
vObject.Transform.Update(null, null, null, null, angle);
vObject.Opacity = opacity;
}
textBitmap.DpiX = dpi;
textBitmap.DpiY = dpi;
id = CreateFileId(vObject.GetMD5(dpi));
return(textBitmap);
}