master f7755b8: Flip buffers if display were modified in haiku_read_socket

[Po Lu]

branch: master
commit f7755b88186bc70a35e0d8be422c8dd2f10db0ac
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Flip buffers if display were modified in haiku_read_socket
    
    * src/haikuterm.c (flush_dirty_back_buffers): New function.
    (haiku_read_socket): Flip buffers if the display could have
    been modified.
---
 src/haikuterm.c | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/src/haikuterm.c b/src/haikuterm.c
index f95a013..24fa44b 100644
--- a/src/haikuterm.c
+++ b/src/haikuterm.c
@@ -2571,6 +2571,25 @@ haiku_make_fullscreen_consistent (struct frame *f)
   store_frame_param (f, Qfullscreen, lval);
 }
 
+static void
+flush_dirty_back_buffers (void)
+{
+  block_input ();
+  Lisp_Object tail, frame;
+  FOR_EACH_FRAME (tail, frame)
+    {
+      struct frame *f = XFRAME (frame);
+      if (FRAME_LIVE_P (f) &&
+          FRAME_HAIKU_P (f) &&
+          FRAME_HAIKU_WINDOW (f) &&
+          !FRAME_GARBAGED_P (f) &&
+          !buffer_flipping_blocked_p () &&
+          FRAME_DIRTY_P (f))
+        haiku_flip_buffers (f);
+    }
+  unblock_input ();
+}
+
 static int
 haiku_read_socket (struct terminal *terminal, struct input_event *hold_quit)
 {
@@ -2580,6 +2599,7 @@ haiku_read_socket (struct terminal *terminal, struct 
input_event *hold_quit)
   ssize_t b_size;
   struct unhandled_event *unhandled_events = NULL;
   int button_or_motion_p;
+  int need_flush = 0;
 
   if (!buf)
     buf = xmalloc (200);
@@ -2827,8 +2847,11 @@ haiku_read_socket (struct terminal *terminal, struct 
input_event *hold_quit)
                tab_bar_p = EQ (window, f->tab_bar_window);
 
                if (tab_bar_p)
-                 tab_bar_arg = handle_tab_bar_click
-                   (f, x, y, type == BUTTON_DOWN, inev.modifiers);
+                 {
+                   tab_bar_arg = handle_tab_bar_click
+                     (f, x, y, type == BUTTON_DOWN, inev.modifiers);
+                   need_flush = 1;
+                 }
              }
 
            if (WINDOWP (f->tool_bar_window)
@@ -2845,7 +2868,7 @@ haiku_read_socket (struct terminal *terminal, struct 
input_event *hold_quit)
                  {
                    handle_tool_bar_click
                      (f, x, y, type == BUTTON_DOWN, inev.modifiers);
-                   redisplay ();
+                   need_flush = 1;
                  }
              }
 
@@ -3223,6 +3246,9 @@ haiku_read_socket (struct terminal *terminal, struct 
input_event *hold_quit)
       xfree (old);
     }
 
+  if (need_flush)
+    flush_dirty_back_buffers ();
+
   unblock_input ();
   return message_count;
 }