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/* gcc -Wall -g -O2 -o load-and-render load-and-render.c `pkg-config --cflags --libs rsvg-2.0` */
#include <stdlib.h>
#include <librsvg/rsvg.h>
#define WIDTH 640
#define HEIGHT 480
int
main (void)
{
/* First, load an SVG document into an RsvgHandle */
GError *error = NULL;
GFile *file = g_file_new_for_path ("hello.svg");
RsvgHandle *handle = rsvg_handle_new_from_gfile_sync (file, RSVG_HANDLE_FLAGS_NONE, NULL, &error);
if (!handle)
{
g_printerr ("could not load: %s", error->message);
exit (1);
}
/* Create a Cairo image surface and a rendering context for it */
cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, WIDTH, HEIGHT);
cairo_t *cr = cairo_create (surface);
/* Render the handle scaled proportionally into that whole surface */
RsvgRectangle viewport = {
.x = 0.0,
.y = 0.0,
.width = WIDTH,
.height = HEIGHT,
};
if (!rsvg_handle_render_document (handle, cr, &viewport, &error))
{
g_printerr ("could not render: %s", error->message);
exit (1);
}
/* Write a PNG file */
if (cairo_surface_write_to_png (surface, "hello.png") != CAIRO_STATUS_SUCCESS)
{
g_printerr ("could not write output file");
exit (1);
}
/* Free our memory and we are done! */
cairo_destroy (cr);
cairo_surface_destroy (surface);
g_object_unref (handle);
g_object_unref (file);
return 0;
}
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