From 4b328da1f97f52515899aad13f50bfdbb54d044d Mon Sep 17 00:00:00 2001
From: Michal Koutenský <koutak.m@gmail.com>
Date: Fri, 13 Nov 2015 21:54:38 +0100
Subject: sxiv-like 'start at' option

---
 src/main.c | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/src/main.c b/src/main.c
index fc73455..9cd9563 100644
--- a/src/main.c
+++ b/src/main.c
@@ -31,13 +31,14 @@ struct {
   int stdin;
   int recursive;
   int actual;
-} g_options = {0,0,0,0};
+  long int start_at;
+} g_options = {0,0,0,0,0};
 
 void print_usage(const char* name)
 {
   fprintf(stdout,
   "imv %s\n"
-  "Usage: %s [-irfah] [images...]\n"
+  "Usage: %s [-irfah] [-n NUM] [images...]\n"
   "\n"
   "Flags:\n"
   "  -i: Read paths from stdin. One path per line.\n"
@@ -46,6 +47,9 @@ void print_usage(const char* name)
   "  -a: Default to images' actual size\n"
   "  -h: Print this help\n"
   "\n"
+  "Options:\n"
+  "  -n NUM: Starts at picture number NUM.\n"
+  "\n"
   "Mouse:\n"
   "   Click+Drag to Pan\n"
   "   MouseWheel to Zoom\n"
@@ -88,8 +92,10 @@ void parse_args(int argc, char** argv)
 
   const char* name = argv[0];
   char o;
+  char* end;
+  long int n;
 
-  while((o = getopt(argc, argv, "firah")) != -1) {
+  while((o = getopt(argc, argv, "firahn:")) != -1) {
     switch(o) {
       case 'f': g_options.fullscreen = 1;   break;
       case 'i':
@@ -99,6 +105,14 @@ void parse_args(int argc, char** argv)
       case 'r': g_options.recursive = 1;    break;
       case 'a': g_options.actual = 1;       break;
       case 'h': print_usage(name); exit(0); break;
+      case 'n':
+        n = strtol(optarg,&end,0);
+        if(*end != '\0' || n <= 0) {
+            fprintf(stderr, "Warning: wrong value for '-n'.\n");
+        } else {
+            g_options.start_at = n - 1;
+        }
+        break;
       case '?':
         fprintf(stderr, "Unknown argument '%c'. Aborting.\n", optopt);
         exit(1);
@@ -189,6 +203,10 @@ int main(int argc, char** argv)
 
   double last_time = SDL_GetTicks() / 1000.0;
 
+  for(long int i = 0; i < g_options.start_at; ++i) {
+    imv_navigator_next_path(&nav);
+  }
+
   int quit = 0;
   while(!quit) {
     SDL_Event e;
-- 
cgit v1.2.3


From a9a1ccf0228cffdd65e06250ef0631b940baec72 Mon Sep 17 00:00:00 2001
From: Michal Koutenský <koutak.m@gmail.com>
Date: Fri, 13 Nov 2015 22:35:25 +0100
Subject: imv_navigator_set_path

---
 src/main.c      | 14 ++++++--------
 src/navigator.c | 10 ++++++++++
 src/navigator.h |  1 +
 3 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/src/main.c b/src/main.c
index 9cd9563..44a4a6c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -31,7 +31,7 @@ struct {
   int stdin;
   int recursive;
   int actual;
-  long int start_at;
+  int start_at;
 } g_options = {0,0,0,0,0};
 
 void print_usage(const char* name)
@@ -48,7 +48,7 @@ void print_usage(const char* name)
   "  -h: Print this help\n"
   "\n"
   "Options:\n"
-  "  -n NUM: Starts at picture number NUM.\n"
+  "  -n NUM: Start at picture number NUM.\n"
   "\n"
   "Mouse:\n"
   "   Click+Drag to Pan\n"
@@ -93,7 +93,7 @@ void parse_args(int argc, char** argv)
   const char* name = argv[0];
   char o;
   char* end;
-  long int n;
+  int n;
 
   while((o = getopt(argc, argv, "firahn:")) != -1) {
     switch(o) {
@@ -108,9 +108,9 @@ void parse_args(int argc, char** argv)
       case 'n':
         n = strtol(optarg,&end,0);
         if(*end != '\0' || n <= 0) {
-            fprintf(stderr, "Warning: wrong value for '-n'.\n");
+          fprintf(stderr, "Warning: wrong value for '-n'.\n");
         } else {
-            g_options.start_at = n - 1;
+          g_options.start_at = n - 1;
         }
         break;
       case '?':
@@ -203,9 +203,7 @@ int main(int argc, char** argv)
 
   double last_time = SDL_GetTicks() / 1000.0;
 
-  for(long int i = 0; i < g_options.start_at; ++i) {
-    imv_navigator_next_path(&nav);
-  }
+  imv_navigator_set_path(&nav, g_options.start_at);
 
   int quit = 0;
   while(!quit) {
diff --git a/src/navigator.c b/src/navigator.c
index 1974f8a..d719791 100644
--- a/src/navigator.c
+++ b/src/navigator.c
@@ -175,6 +175,16 @@ void imv_navigator_remove_current_path(struct imv_navigator *nav)
   nav->changed = 1;
 }
 
+void imv_navigator_set_path(struct imv_navigator *nav, const int path)
+{
+  if(path <= 0 || path >= nav->num_paths) {
+    return;
+  }
+  int prev_path = nav->cur_path;
+  nav->cur_path = path;
+  nav->changed = prev_path != nav->cur_path;
+}
+
 int imv_navigator_has_changed(struct imv_navigator *nav)
 {
   if(nav->changed) {
diff --git a/src/navigator.h b/src/navigator.h
index c6d4f8e..c06bcce 100644
--- a/src/navigator.h
+++ b/src/navigator.h
@@ -37,6 +37,7 @@ const char *imv_navigator_get_current_path(struct imv_navigator *nav);
 void imv_navigator_next_path(struct imv_navigator *nav);
 void imv_navigator_prev_path(struct imv_navigator *nav);
 void imv_navigator_remove_current_path(struct imv_navigator *nav);
+void imv_navigator_set_path(struct imv_navigator *nav, const int path);
 
 int imv_navigator_has_changed(struct imv_navigator *nav);
 
-- 
cgit v1.2.3