/// <summary>
/// Save to PDF
/// </summary>
/// <param name="stream">Strema to write to</param>
public void SaveToPdf(Stream stream)
{
//NativeMethods.cairo_select_font_face(_rsvgHandle, "serif", 0, 0);
NativeMethods.RsvgDimensionData dim = new NativeMethods.RsvgDimensionData();
NativeMethods.rsvg_handle_get_dimensions(_rsvgHandle, ref dim);
CairoWriteFunction cwf = new CairoWriteFunction(WriteToPDF);
GCHandle handle1 = GCHandle.Alloc(stream);
IntPtr parameter = (IntPtr)handle1;
IntPtr surface = NativeMethods.cairo_pdf_surface_create_for_stream(cwf, parameter, dim.width, dim.height);
IntPtr cairo = NativeMethods.cairo_create(surface);
NativeMethods.rsvg_handle_render_cairo(_rsvgHandle, cairo);
int status = NativeMethods.cairo_status(cairo);
if (status > 0)
{
IntPtr s = NativeMethods.cairo_status_to_string(status);
string ret = Marshal.PtrToStringAnsi(s);
throw new Exception(ret);
}
NativeMethods.cairo_destroy(cairo);
NativeMethods.cairo_surface_destroy(surface);
}
/// <summary>
/// Creates a C# Bitmap from the SVGImage
/// </summary>
/// <param name="w">The desired width</param>
/// <param name="h">The desired height</param>
/// <param name="stretch">If true, stretch the SVG image to fit the width and height exactly</param>
/// <returns>A new Bitmap containing the SVG image</returns>
public Bitmap Image(int w, int h, bool stretch)
{
int dw = 0;
int dh = 0;
if (_rsvgHandle == IntPtr.Zero)
{
return(null);
}
NativeMethods.RsvgDimensionData dim = GetDimensions();
double scaleX = w / ((double)dim.width);
double scaleY = h / ((double)dim.height);
if (stretch)
{
dw = w;
dh = h;
}
else
{
double fixedScale = (scaleX < scaleY ? scaleX : scaleY);
double fixedWidth = dim.width * fixedScale;
double fixedHeight = dim.height * fixedScale;
scaleX = fixedScale;
scaleY = fixedScale;
dw = (int)fixedWidth;
dh = (int)fixedHeight;
}
return(Image(dw, dh, scaleX, scaleY));
}
/// <summary>
/// Save to PDF
/// </summary>
/// <param name="filename">Path to file to save</param>
public void SaveToPdf(String filename)
{
NativeMethods.RsvgDimensionData dim = new NativeMethods.RsvgDimensionData();
NativeMethods.rsvg_handle_get_dimensions(_rsvgHandle, ref dim);
IntPtr surface = NativeMethods.cairo_pdf_surface_create(filename, dim.width, dim.height);
IntPtr cairo = NativeMethods.cairo_create(surface);
NativeMethods.rsvg_handle_render_cairo(_rsvgHandle, cairo);
int status = NativeMethods.cairo_status(cairo);
if (status > 0)
{
IntPtr s = NativeMethods.cairo_status_to_string(status);
string ret = Marshal.PtrToStringAnsi(s);
throw new Exception(ret);
}
NativeMethods.cairo_destroy(cairo);
NativeMethods.cairo_surface_destroy(surface);
}
NativeMethods.RsvgDimensionData GetDimensions()
{
NativeMethods.RsvgDimensionData dim = new NativeMethods.RsvgDimensionData();
NativeMethods.rsvg_handle_get_dimensions(_rsvgHandle, ref dim);
return(dim);
}
public Bitmap Image(double dpiX, double dpiY)
{
NativeMethods.RsvgDimensionData dim = GetDimensions();
return(Image(dim.width, dim.height, dpiX, dpiY));
}
public Bitmap Image(double dpi)
{
NativeMethods.RsvgDimensionData dim = GetDimensions();
return(Image((int)dpi * dim.width, (int)dpi * dim.height, dpi, dpi));
}
