2
下面是我用來從svg文件保存png的代碼。這有效,但我也需要將它保存爲jpeg。有人可以告訴我如何做到這一點?如何從開羅保存jpg
private void RasterizeSvg(string tempsvg, string rsltPath, int _width, int _height)
{
bool callSuccessful = SetDllDirectory(@"C:\ProgramDownloads\librsvg\librsvg-dev_2.32.1-1_win32\bin");
if (!callSuccessful)
{
throw new Exception("Could not set DLL directory");
}
g_type_init();
IntPtr error;
IntPtr rsvghandle = rsvg_handle_new_from_file(tempsvg, out error);
if (error != IntPtr.Zero)
{
throw new Exception(Marshal.ReadInt32(error).ToString());
}
IntPtr cairosurface = cairo_image_surface_create(cairo_format_t.CAIRO_FORMAT_RGB24, _width, _height);
IntPtr cairorenderer = cairo_create(cairosurface);
bool brslt = rsvg_handle_render_cairo(rsvghandle, cairorenderer);
//cairo_surface_write_to_png(cairosurface, rsltPath);
IntPtr pixbuf = IntPtr.Zero;
cairo_set_source_surface(pixbuf, cairosurface, 0, 0);
cairo_rectangle(pixbuf, 0, 0, _width, _height);
cairo_fill(pixbuf);
callSuccessful = gdk_pixbuf_save(pixbuf, rsltPath, "jpg", out error, __arglist(""));
if (!callSuccessful)
{
throw new Exception(error.ToInt32().ToString());
}
}
我已經改變了cairo_set_source的順序,把cairo_rectangle第一,但我仍然得到一個訪問衝突
好的,會改變,但我甚至沒有達到那一點。我在cairo_set_source_surface上遇到訪問衝突。如果我先放cairo_rectangle,它也會拋出av – edepperson
你傳遞一個空指針給它。 –
好的,我將它改爲: IntPtr pixbuf = cairo_image_surface_create(cairo_format_t.CAIRO_FORMAT_RGB24,_width,_height); 但cairo_set_source仍然拋出av – edepperson