Exemplo n.º 1
0
static const char *
_spectre_render_page (const char *filename,
		      const char *page_label,
		      cairo_surface_t **surface_out)
{
    static const cairo_user_data_key_t key;

    SpectreDocument *document;
    SpectreStatus status;
    int width, height, stride;
    unsigned char *pixels;
    cairo_surface_t *surface;

    document = spectre_document_new ();
    spectre_document_load (document, filename);
    status = spectre_document_status (document);
    if (status) {
	spectre_document_free (document);
	return spectre_status_to_string (status);
    }

    if (page_label) {
	SpectrePage *page;
	SpectreRenderContext *rc;

	page = spectre_document_get_page_by_label (document, page_label);
	spectre_document_free (document);
	if (page == NULL)
	    return "page not found";

	spectre_page_get_size (page, &width, &height);
	rc = spectre_render_context_new ();
	spectre_render_context_set_page_size (rc, width, height);
	spectre_page_render (page, rc, &pixels, &stride);
	spectre_render_context_free (rc);
	status = spectre_page_status (page);
	spectre_page_free (page);
	if (status) {
	    free (pixels);
	    return spectre_status_to_string (status);
	}
    } else {
	spectre_document_get_page_size (document, &width, &height);
	spectre_document_render (document, &pixels, &stride);
	spectre_document_free (document);
    }

    surface = cairo_image_surface_create_for_data (pixels,
						   CAIRO_FORMAT_RGB24,
						   width, height,
						   stride);
    cairo_surface_set_user_data (surface, &key,
				 pixels, (cairo_destroy_func_t) free);
    *surface_out = surface;
    return NULL;
}
Exemplo n.º 2
0
static void
go_spectre_build_surface (GOSpectre *spectre)
{
	guint8 *data = NULL;
	int rowstride;
	static const cairo_user_data_key_t key;

	spectre_document_render  (spectre->doc, &data, &rowstride);
	if (!data)
		return;
	if (spectre_document_status (spectre->doc) != SPECTRE_STATUS_SUCCESS) {
		g_free (data);
		return;
	}

	spectre->surface = cairo_image_surface_create_for_data (data,
						       CAIRO_FORMAT_RGB24,
						       spectre->parent.width, spectre->parent.height,
						       rowstride);
	cairo_surface_set_user_data (spectre->surface, &key,
				     data, (cairo_destroy_func_t) g_free);
}