From 36a17f74e22a2d8406a98577caa73e16037980c7 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@bitwiz.org.uk>
Date: Fri, 24 May 2013 23:24:45 +0200
Subject: Restore PDF export

---
 src/mainwindow.c |  7 +++----
 src/render.c     | 39 +++++++++++++++++++++++++++++++++++++++
 src/render.h     |  1 +
 3 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/src/mainwindow.c b/src/mainwindow.c
index 91f4068..9e8a7d5 100644
--- a/src/mainwindow.c
+++ b/src/mainwindow.c
@@ -354,10 +354,9 @@ static gint export_pdf_response_sig(GtkWidget *d, gint response,
 
 		filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(d));
 
-		/* FIXME */
-		//if ( export_pdf(p, filename) ) {
-		//	show_error(p, "Failed to export as PDF");
-		//}
+		if ( export_pdf(p, filename) ) {
+			show_error(p, "Failed to export as PDF");
+		}
 
 		g_free(filename);
 
diff --git a/src/render.c b/src/render.c
index 0fdd837..d00357a 100644
--- a/src/render.c
+++ b/src/render.c
@@ -527,3 +527,42 @@ cairo_surface_t *render_slide(struct slide *s, int w, double ww, double hh,
 
 	return surf;
 }
+
+
+int export_pdf(struct presentation *p, const char *filename)
+{
+	int i;
+	cairo_surface_t *surf;
+	cairo_t *cr;
+
+	surf = cairo_pdf_surface_create(filename, p->slide_width,
+	                                          p->slide_height);
+
+	if ( cairo_surface_status(surf) != CAIRO_STATUS_SUCCESS ) {
+		fprintf(stderr, "Couldn't create Cairo surface\n");
+		return 1;
+	}
+
+	cr = cairo_create(surf);
+
+	for ( i=0; i<p->num_slides; i++ ) {
+
+		cairo_surface_t *sf;
+		struct slide *s;
+
+		s = p->slides[i];
+		sf = render_slide(s, 1024, p->slide_width, p->slide_height,
+		                  p->is, ISZ_SLIDESHOW);
+		cairo_rectangle(cr, 0.0, 0.0, p->slide_width, p->slide_height);
+		cairo_set_source_surface(cr, sf, 0.0, 0.0);
+		cairo_fill(cr);
+		cairo_surface_show_page(surf);
+		cairo_surface_destroy(sf);
+
+	}
+
+	cairo_surface_finish(surf);
+	cairo_destroy(cr);
+
+	return 0;
+}
diff --git a/src/render.h b/src/render.h
index 7bdeb8a..8dcb7b5 100644
--- a/src/render.h
+++ b/src/render.h
@@ -35,5 +35,6 @@ extern cairo_surface_t *render_slide(struct slide *s, int w,
                                      enum is_size isz);
 extern void free_render_buffers(struct slide *s);
 extern void free_render_buffers_except_thumb(struct slide *s);
+extern int export_pdf(struct presentation *p, const char *filename);
 
 #endif	/* RENDER_H */
-- 
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