From: Sebastian Harl <sh@tokkee.org>
Date: Fri, 11 Nov 2011 13:17:30 +0000 (+0100)
Subject: gtk-tpdfv: Auto-reload the PDF on expose if the file has changed.
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=1e9e5005b44d65819a9969b613c784e50f90030f;p=tpdfview.git

gtk-tpdfv: Auto-reload the PDF on expose if the file has changed.
---

diff --git a/src/gtk-tpdfv.c b/src/gtk-tpdfv.c
index ee68357..cba2e1f 100644
--- a/src/gtk-tpdfv.c
+++ b/src/gtk-tpdfv.c
@@ -43,6 +43,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <sys/stat.h>
+
 #define TPDFV_MIN(a, b) ((a) <= (b) ? (a) : (b))
 #define TPDFV_MAX(a, b) ((a) >= (b) ? (a) : (b))
 
@@ -56,6 +58,8 @@ typedef enum {
 typedef struct {
 	char *filename;
 
+	time_t mtime;
+
 	PopplerDocument *doc;
 	PopplerPage     *current_page;
 
@@ -84,9 +88,21 @@ tpdfv_open(gtk_tpdfv_t *pdf)
 {
 	GError *err = NULL;
 
+	struct stat statbuf;
+
 	if ((! pdf) || (! pdf->filename))
 		return;
 
+	memset(&statbuf, 0, sizeof(statbuf));
+	if (stat(pdf->filename + strlen("file://"), &statbuf) != 0) {
+		char errbuf[1024];
+		strerror_r(errno, errbuf, sizeof(errbuf));
+		fprintf(stderr, "Failed to access PDF: %s.\n", errbuf);
+		return;
+	}
+
+	pdf->mtime = statbuf.st_mtime;
+
 	pdf->doc = poppler_document_new_from_file(pdf->filename,
 			/* password = */ NULL, &err);
 	if (! pdf->doc) {
@@ -201,6 +217,8 @@ gtk_tpdfv_expose(GtkWidget *tpdfv, GdkEventExpose *event)
 	gtk_tpdfv_t *pdf;
 	cairo_t *cr;
 
+	struct stat statbuf;
+
 	gdouble width, height;
 
 	gdouble page_width  = 0.0;
@@ -214,6 +232,17 @@ gtk_tpdfv_expose(GtkWidget *tpdfv, GdkEventExpose *event)
 	if (! pdf)
 		return FALSE;
 
+	memset(&statbuf, 0, sizeof(statbuf));
+	if (stat(pdf->filename + strlen("file://"), &statbuf)) {
+		char errbuf[1024];
+		strerror_r(errno, errbuf, sizeof(errbuf));
+		fprintf(stderr, "Failed to access PDF: %s.\n", errbuf);
+		return FALSE;
+	}
+
+	if (statbuf.st_mtime > pdf->mtime)
+		gtk_tpdfv_reload(tpdfv);
+
 	cr = gdk_cairo_create(tpdfv->window);
 	cairo_rectangle(cr, event->area.x, event->area.y,
 			event->area.width, event->area.height);