public SVGImage(string file)
{
int error = 0;
dimension = new RsvgDimensionData();
try {
handle = rsvg_handle_new_from_file(file, out error);
if (handle != IntPtr.Zero)
{
rsvg_handle_get_dimensions(handle, ref dimension);
}
}
catch (Exception e)
{
Console.WriteLine("SVGImage. SVGImage (file). Exception: {0}", e);
}
finally
{
if (handle == IntPtr.Zero)
{
throw new System.IO.IOException("SVGImage. SVGImage (file). Could not load file: " + file);
}
}
}
public SVGImage(string file)
{
int error = 0;
dimension = new RsvgDimensionData ();
try {
handle = rsvg_handle_new_from_file (file, out error);
if (handle != IntPtr.Zero)
rsvg_handle_get_dimensions (handle, ref dimension);
}
finally
{
if (handle == IntPtr.Zero)
throw new System.IO.IOException ("File not found: " + file);
}
}
public SVGImage(string file)
{
int error = 0;
dimension = new RsvgDimensionData ();
try {
handle = rsvg_handle_new_from_file (file, out error);
if (handle != IntPtr.Zero)
rsvg_handle_get_dimensions (handle, ref dimension);
}
catch (Exception e)
{
Console.WriteLine ("SVGImage. SVGImage (file). Exception: {0}", e);
}
finally
{
if (handle == IntPtr.Zero)
throw new System.IO.IOException ("SVGImage. SVGImage (file). Could not load file: " + file);
}
}
public SVGImage(string file)
{
int error = 0;
dimension = new RsvgDimensionData();
try {
handle = rsvg_handle_new_from_file(file, out error);
if (handle != IntPtr.Zero)
{
rsvg_handle_get_dimensions(handle, ref dimension);
}
}
finally
{
if (handle == IntPtr.Zero)
{
throw new System.IO.IOException("File not found: " + file);
}
}
}
static extern void rsvg_handle_get_dimensions(IntPtr handle, ref RsvgDimensionData dimension);
internal static extern void rsvg_handle_get_dimensions(IntPtr handle, ref RsvgDimensionData dimension_data);
/// <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)
{
RsvgDimensionData dim = new RsvgDimensionData();
int dw = 0;
int dh = 0;
if (_rsvgHandle == IntPtr.Zero)
{
return null;
}
rsvg_handle_get_dimensions(_rsvgHandle, ref dim);
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;
}
//// Initialize the gdk_pixbuf
IntPtr pixbuf = gdk_pixbuf_new(ColorSpace.Rgb, true, 8, dw, dh);
int stride = gdk_pixbuf_get_rowstride(pixbuf);
int width = dw;
int height = dh;
IntPtr pixels = gdk_pixbuf_get_pixels(pixbuf);
byte[] src = new byte[stride * height];
Marshal.Copy(src, 0, pixels, src.Length);
//// Create the cairo surface
IntPtr surface = cairo_image_surface_create_for_data(gdk_pixbuf_get_pixels(pixbuf), 0, width, height, stride);
IntPtr cairo = cairo_create(surface);
//// Set the scale and render the image
cairo_scale(cairo, scaleX, scaleY);
rsvg_handle_render_cairo(_rsvgHandle, cairo);
//// Destroy the cairo surface
cairo_destroy(cairo);
cairo_surface_destroy(surface);
//// Copy the gdk_pixbuf into a bitmap
Bitmap bitmap = new Bitmap(width, height);
byte[] temp = new byte[stride * height];
Marshal.Copy(pixels, temp, 0, temp.Length);
BitmapData bd = bitmap.LockBits(new Rectangle(Point.Empty, bitmap.Size), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
if (bd.Stride == stride)
{
Marshal.Copy(temp, 0, bd.Scan0, temp.Length);
}
else
{
for (int y = 0; y < height; ++y)
{
Marshal.Copy(temp, y * stride, new IntPtr(bd.Scan0.ToInt64() + y * bd.Stride), width * 4);
}
}
bitmap.UnlockBits(bd);
//// Release the gdk_pixbuf
g_object_unref(pixbuf);
return bitmap;
}
/// <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)
{
RsvgDimensionData dim = new RsvgDimensionData();
int dw = 0;
int dh = 0;
if (_rsvgHandle == IntPtr.Zero)
{
return(null);
}
rsvg_handle_get_dimensions(_rsvgHandle, ref dim);
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;
}
//// Initialize the gdk_pixbuf
IntPtr pixbuf = gdk_pixbuf_new(ColorSpace.Rgb, true, 8, dw, dh);
int stride = gdk_pixbuf_get_rowstride(pixbuf);
int width = dw;
int height = dh;
IntPtr pixels = gdk_pixbuf_get_pixels(pixbuf);
byte[] src = new byte[stride * height];
Marshal.Copy(src, 0, pixels, src.Length);
//// Create the cairo surface
IntPtr surface = cairo_image_surface_create_for_data(gdk_pixbuf_get_pixels(pixbuf), 0, width, height, stride);
IntPtr cairo = cairo_create(surface);
//// Set the scale and render the image
cairo_scale(cairo, scaleX, scaleY);
rsvg_handle_render_cairo(_rsvgHandle, cairo);
//// Destroy the cairo surface
cairo_destroy(cairo);
cairo_surface_destroy(surface);
//// Copy the gdk_pixbuf into a bitmap
Bitmap bitmap = new Bitmap(width, height);
byte[] temp = new byte[stride * height];
Marshal.Copy(pixels, temp, 0, temp.Length);
BitmapData bd = bitmap.LockBits(new Rectangle(Point.Empty, bitmap.Size), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
if (bd.Stride == stride)
{
Marshal.Copy(temp, 0, bd.Scan0, temp.Length);
}
else
{
for (int y = 0; y < height; ++y)
{
Marshal.Copy(temp, y * stride, new IntPtr(bd.Scan0.ToInt64() + y * bd.Stride), width * 4);
}
}
bitmap.UnlockBits(bd);
//// Release the gdk_pixbuf
g_object_unref(pixbuf);
return(bitmap);
}
