From 90dda33108dc505f66d79c6422cf69456c5b7fa0 Mon Sep 17 00:00:00 2001
From: Po Lu <luangruo@yahoo.com>
Date: Wed, 19 Jan 2022 02:08:52 +0000
Subject: [PATCH] Use more reliable timestamps for some kinds of events on
 Haiku

* src/haiku_support.cc (DispatchMessage):
(MouseMoved):
(MouseDown):
(MouseUp): Set `time' field of event structures to input server
time.
* src/haiku_support.h (struct haiku_key_event):
(struct haiku_mouse_motion_event):
(struct haiku_button_event): New field `time'.
* src/haikuterm.c (haiku_read_socket): Use input server time
if provided.
---
 src/haiku_support.cc | 5 ++++-
 src/haiku_support.h  | 8 +++++++-
 src/haikuterm.c      | 9 +++++----
 3 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/src/haiku_support.cc b/src/haiku_support.cc
index 53716ff1612..cd4e6e46cd2 100644
--- a/src/haiku_support.cc
+++ b/src/haiku_support.cc
@@ -720,6 +720,7 @@ public:
 	int ret;
 	msg->FindInt32 ("raw_char", &raw);
 	msg->FindInt32 ("key", &key);
+	msg->FindInt64 ("when", &rq.time);
 
 	rq.modifiers = 0;
 	uint32_t mods = modifiers ();
@@ -1382,8 +1383,8 @@ public:
     rq.just_exited_p = transit == B_EXITED_VIEW;
     rq.x = point.x;
     rq.y = point.y;
-    rq.be_code = transit;
     rq.window = this->Window ();
+    rq.time = system_time ();
 
     if (ToolTip ())
       ToolTip ()->SetMouseRelativeLocation (BPoint (-(point.x - tt_absl_pos.x),
@@ -1438,6 +1439,7 @@ public:
 
     SetMouseEventMask (B_POINTER_EVENTS, B_LOCK_WINDOW_FOCUS);
 
+    rq.time = system_time ();
     haiku_write (BUTTON_DOWN, &rq);
   }
 
@@ -1484,6 +1486,7 @@ public:
     if (!buttons)
       SetMouseEventMask (0, 0);
 
+    rq.time = system_time ();
     haiku_write (BUTTON_UP, &rq);
   }
 };
diff --git a/src/haiku_support.h b/src/haiku_support.h
index 83f22972ce2..6ddc28759b5 100644
--- a/src/haiku_support.h
+++ b/src/haiku_support.h
@@ -34,6 +34,8 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <math.h>
 
+#include <kernel/OS.h>
+
 enum haiku_cursor
   {
     CURSOR_ID_NO_CURSOR = 12,
@@ -132,6 +134,9 @@ struct haiku_key_event
   int modifiers;
   unsigned keysym;
   uint32_t multibyte_char;
+
+  /* Time the keypress occurred, in microseconds.  */
+  bigtime_t time;
 };
 
 struct haiku_activation_event
@@ -146,7 +151,7 @@ struct haiku_mouse_motion_event
   bool just_exited_p;
   int x;
   int y;
-  uint32_t be_code;
+  bigtime_t time;
 };
 
 struct haiku_button_event
@@ -156,6 +161,7 @@ struct haiku_button_event
   int modifiers;
   int x;
   int y;
+  bigtime_t time;
 };
 
 struct haiku_iconification_event
diff --git a/src/haikuterm.c b/src/haikuterm.c
index 0fa6050b478..93ba088f5b1 100644
--- a/src/haikuterm.c
+++ b/src/haikuterm.c
@@ -2725,6 +2725,7 @@ haiku_read_socket (struct terminal *terminal, struct input_event *hold_quit)
 	      inev.kind = inev.code > 127 ? MULTIBYTE_CHAR_KEYSTROKE_EVENT :
 		ASCII_KEYSTROKE_EVENT;
 
+	    inev.timestamp = b->time / 1000;
 	    inev.modifiers = haiku_modifiers_to_emacs (b->modifiers);
 	    XSETFRAME (inev.frame_or_window, f);
 	    break;
@@ -2763,7 +2764,7 @@ haiku_read_socket (struct terminal *terminal, struct input_event *hold_quit)
 	    Lisp_Object frame;
 	    XSETFRAME (frame, f);
 
-	    x_display_list->last_mouse_movement_time = system_time () / 1000;
+	    x_display_list->last_mouse_movement_time = b->time / 1000;
 	    button_or_motion_p = 1;
 
 	    if (hlinfo->mouse_face_hidden)
@@ -2889,7 +2890,7 @@ haiku_read_socket (struct terminal *terminal, struct input_event *hold_quit)
 	    inev.modifiers = haiku_modifiers_to_emacs (b->modifiers);
 
 	    x_display_list->last_mouse_glyph_frame = 0;
-	    x_display_list->last_mouse_movement_time = system_time () / 1000;
+	    x_display_list->last_mouse_movement_time = b->time / 1000;
 	    button_or_motion_p = 1;
 
 	    /* Is this in the tab-bar?  */
@@ -3294,7 +3295,7 @@ haiku_read_socket (struct terminal *terminal, struct input_event *hold_quit)
 
       if (inev.kind != NO_EVENT)
 	{
-	  if (inev.kind != HELP_EVENT)
+	  if (inev.kind != HELP_EVENT && !inev.timestamp)
 	    inev.timestamp = (button_or_motion_p
 			      ? x_display_list->last_mouse_movement_time
 			      : system_time () / 1000);
@@ -3304,7 +3305,7 @@ haiku_read_socket (struct terminal *terminal, struct input_event *hold_quit)
 
       if (inev2.kind != NO_EVENT)
 	{
-	  if (inev2.kind != HELP_EVENT)
+	  if (inev2.kind != HELP_EVENT && !inev.timestamp)
 	    inev2.timestamp = (button_or_motion_p
 			       ? x_display_list->last_mouse_movement_time
 			       : system_time () / 1000);
-- 
2.39.2