Fix \slidenumber

1 files changed, 10 insertions, 4 deletions

diff --git a/src/render.c b/src/render.c
index 8e1645e..f42d2cc 100644
--- a/src/render.c
+++ b/src/render.c
@@ -328,11 +328,12 @@ void free_render_buffers_except_thumb(struct slide *s)
 static void render_slide_to_surface(struct slide *s, cairo_surface_t *surf,
                                     cairo_t *cr,  enum is_size isz,
                                     double scale, double w, double h,
-                                    ImageStore *is)
+                                    ImageStore *is, int slide_number)
 {
 	PangoFontMap *fontmap;
 	PangoContext *pc;
 	SCInterpreter *scin;
+	char snum[64];
 
 	cairo_scale(cr, scale, scale);
 
@@ -358,6 +359,9 @@ static void render_slide_to_surface(struct slide *s, cairo_surface_t *surf,
 		return;
 	}
 
+	snprintf(snum, 63, "%i", slide_number);
+	add_macro(scin, "slidenumber", snum);
+
 	/* "The rendering pipeline" */
 	sc_interp_run_stylesheet(scin, s->parent->stylesheet);
 	renew_frame(s->top);
@@ -380,7 +384,8 @@ static void render_slide_to_surface(struct slide *s, cairo_surface_t *surf,
  * Render the entire slide.
  */
 cairo_surface_t *render_slide(struct slide *s, int w, double ww, double hh,
-                              ImageStore *is, enum is_size isz)
+                              ImageStore *is, enum is_size isz,
+                              int slide_number)
 {
 	cairo_surface_t *surf;
 	cairo_t *cr;
@@ -397,7 +402,8 @@ cairo_surface_t *render_slide(struct slide *s, int w, double ww, double hh,
 
 	surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h);
 	cr = cairo_create(surf);
-	render_slide_to_surface(s, surf, cr, isz, scale, w, h, is);
+	render_slide_to_surface(s, surf, cr, isz, scale, w, h, is,
+	                        slide_number);
 	cairo_destroy(cr);
 	return surf;
 }
@@ -441,7 +447,7 @@ int export_pdf(struct presentation *p, const char *filename)
 		s->top->h = w*r;
 
 		render_slide_to_surface(s, surf, cr, ISZ_SLIDESHOW, scale,
-		                        w, w*r, p->is);
+		                        w, w*r, p->is, i);
 
 		cairo_restore(cr);