From: Christian Heller <c.heller@plomlompom.de>
Date: Sat, 24 Aug 2013 03:43:10 +0000 (+0200)
Subject: draw_all_wins() returns error code of its draw_scroll_hint() uses.
X-Git-Tag: tce~1065
X-Git-Url: https://plomlompom.com/repos/%7B%7Bprefix%7D%7D/%7B%7Byoutube_prefix%7D%7D%7B%7Bvideo_id%7D%7D?a=commitdiff_plain;h=8d8eba7405f426c45fd059a17d2f00cfb21c5253;p=plomrogue

draw_all_wins() returns error code of its draw_scroll_hint() uses.
---

diff --git a/src/windows.c b/src/windows.c
index bcfa336..74fb6cf 100644
--- a/src/windows.c
+++ b/src/windows.c
@@ -554,7 +554,7 @@ extern void shift_active_win(struct WinMeta * wmeta, char dir)
 
 
 
-extern void draw_all_wins(struct WinMeta * wmeta)
+extern uint8_t draw_all_wins(struct WinMeta * wmeta)
 {
     /* Empty everything before filling it a-new. */
     erase();
@@ -572,17 +572,23 @@ extern void draw_all_wins(struct WinMeta * wmeta)
         /* Draw virtual screen scroll hints. */
         if (wmeta->pad_offset > 0)
         {
-            draw_scroll_hint(&wmeta->padframe,
-                             wmeta->pad_offset, wmeta->pad_offset + 1, '<');
+            if (draw_scroll_hint(&wmeta->padframe,
+                                 wmeta->pad_offset, wmeta->pad_offset + 1, '<'))
+            {
+                return 1;
+            }
         }
         if (wmeta->pad_offset + wmeta->padframe.size.x
             < getmaxx(wmeta->padframe.curses_win) - 1)
         {
-            draw_scroll_hint(&wmeta->padframe,
-                             wmeta->pad_offset + wmeta->padframe.size.x - 1,
-                             getmaxx(wmeta->padframe.curses_win)
-                             - (wmeta->pad_offset + wmeta->padframe.size.x),
-                             '>');
+            if (draw_scroll_hint(&wmeta->padframe,
+                                 wmeta->pad_offset + wmeta->padframe.size.x - 1,
+                                 getmaxx(wmeta->padframe.curses_win)
+                                 - (wmeta->pad_offset + wmeta->padframe.size.x),
+                                 '>'))
+            {
+                return 1;
+            }
         }
 
         /* Write virtual screen segment to be shown on physical screen into */
@@ -593,6 +599,7 @@ extern void draw_all_wins(struct WinMeta * wmeta)
 
     /* Only at the end write accumulated changes to the physical screen. */
     doupdate();
+    return 0;
 }
 
 
diff --git a/src/windows.h b/src/windows.h
index 3a6ebd5..98f5d9a 100644
--- a/src/windows.h
+++ b/src/windows.h
@@ -153,12 +153,13 @@ extern void shift_active_win(struct WinMeta * wmeta, char dir);
 
 
 
-/* Draw virtual screen including all windows. Also add scroll hints (a line
- * stating that there is more to see on scrolling further into a certain
- * direction) for where the edges of the terminal screen hit non-edges of and
- * inside the virtual screen. Then update the terminal screen.
+/* Draw virtual screen including all windows. Also add scroll hints (see comment
+ * on draw_scroll_hint()) for where the edges of the terminal screen hit
+ * non-edges of and inside the virtual screen. Then update the terminal screen.
+ *
+ * Returns 0 on success, 1 on error (of scroll hint text memory allocation).
  */
-extern void draw_all_wins(struct WinMeta * wmeta);
+extern uint8_t draw_all_wins(struct WinMeta * wmeta);