Let imv_image track changes to itself

3 files changed, 17 insertions, 3 deletions

diff --git a/image.c b/image.c
index 1b50ce8..1fb8094 100644
--- a/image.c
+++ b/image.c
@@ -29,6 +29,7 @@ void imv_init_image(struct imv_image *img)
   img->next_frame = 0;
   img->num_frames = 0;
   img->frame_time = 0;
+  img->changed = 0;
 }
 
 void imv_destroy_image(struct imv_image *img)
@@ -106,6 +107,7 @@ int imv_image_load(struct imv_image *img, const char* path)
     img->height = FreeImage_GetHeight(img->cur_bmp);
   }
 
+  img->changed = 1;
   return 0;
 }
 
@@ -196,6 +198,7 @@ void imv_image_load_next_frame(struct imv_image *img)
     case 3: /* TODO - restore to previous content */
       break;
   }
+  img->changed = 1;
 }
 
 int imv_image_is_animated(struct imv_image *img)
@@ -215,3 +218,13 @@ void imv_image_play(struct imv_image *img, double time)
     imv_image_load_next_frame(img);
   }
 }
+
+int imv_image_has_changed(struct imv_image *img)
+{
+  if(img->changed) {
+    img->changed = 0;
+    return 1;
+  } else {
+  return 0;
+  }
+}
diff --git a/image.h b/image.h
index 4ae3c10..d36dab4 100644
--- a/image.h
+++ b/image.h
@@ -30,6 +30,7 @@ struct imv_image {
   int cur_frame;
   int next_frame;
   int num_frames;
+  int changed;
   double frame_time;
 };
 
@@ -43,4 +44,6 @@ void imv_image_load_next_frame(struct imv_image *img);
 int imv_image_is_animated(struct imv_image *img);
 void imv_image_play(struct imv_image *img, double time);
 
+int imv_image_has_changed(struct imv_image *img);
+
 #endif
diff --git a/main.c b/main.c
index 6ae90bc..6a49fe0 100644
--- a/main.c
+++ b/main.c
@@ -226,9 +226,7 @@ int main(int argc, char** argv)
       break;
     }
 
-    int resend = 0;
     while(imv_navigator_get_current_path(&nav) != current_path) {
-      resend = 1;
       current_path = imv_navigator_get_current_path(&nav);
 
       if(!current_path) {
@@ -253,7 +251,7 @@ int main(int argc, char** argv)
       }
     }
 
-    if(resend) {
+    if(imv_image_has_changed(&img)) {
       imv_texture_set_image(&tex, img.cur_bmp);
       imv_viewport_set_redraw(&view);
     }