feature/pgtk 9e56fa9 034/100: Support focus on click event

[Yuuki Harano]

branch: feature/pgtk
commit 9e56fa9853f5d0114b90d69ff43885a80ca8f5bd
Author: Yuuki Harano <masm+github@masm11.me>
Commit: Jeff Walsh <fejfighter@gmail.com>

    Support focus on click event
    
    * src/pgtkterm.c (enter_notify_event, leave_notify_event)
    (focus_in_event, focus_out_event): support focus on click
    
    focus-on-click な環境に対応。
---
 src/pgtkterm.c | 28 ++++++++++++++++++++--------
 1 file changed, 20 insertions(+), 8 deletions(-)

diff --git a/src/pgtkterm.c b/src/pgtkterm.c
index 7c908a3..fab6e4e 100644
--- a/src/pgtkterm.c
+++ b/src/pgtkterm.c
@@ -5393,7 +5393,11 @@ enter_notify_event(GtkWidget *widget, GdkEvent *event, 
gpointer *user_data)
 {
   PGTK_TRACE("enter_notify_event");
   union buffered_input_event inev;
-  struct frame *focus_frame = 
pgtk_any_window_to_frame(gtk_widget_get_window(widget));
+  struct frame *frame = 
pgtk_any_window_to_frame(gtk_widget_get_window(widget));
+  if (frame == NULL)
+    return FALSE;
+  struct pgtk_display_info *dpyinfo = FRAME_DISPLAY_INFO (frame);
+  struct frame *focus_frame = dpyinfo->x_focus_frame;
   int focus_state
     = focus_frame ? focus_frame->output_data.pgtk->focus_state : 0;
 
@@ -5401,10 +5405,12 @@ enter_notify_event(GtkWidget *widget, GdkEvent *event, 
gpointer *user_data)
   inev.ie.kind = NO_EVENT;
   inev.ie.arg = Qnil;
 
-  if (!(focus_state & FOCUS_EXPLICIT))
+  if (event->crossing.detail != GDK_NOTIFY_INFERIOR
+      && event->crossing.focus
+      && ! (focus_state & FOCUS_EXPLICIT))
     x_focus_changed (TRUE,
                     FOCUS_IMPLICIT,
-                    FRAME_DISPLAY_INFO(focus_frame), focus_frame, &inev);
+                    dpyinfo, frame, &inev);
   if (inev.ie.kind != NO_EVENT)
     evq_enqueue (&inev);
   return TRUE;
@@ -5415,7 +5421,11 @@ leave_notify_event(GtkWidget *widget, GdkEvent *event, 
gpointer *user_data)
 {
   PGTK_TRACE("leave_notify_event");
   union buffered_input_event inev;
-  struct frame *focus_frame = 
pgtk_any_window_to_frame(gtk_widget_get_window(widget));
+  struct frame *frame = 
pgtk_any_window_to_frame(gtk_widget_get_window(widget));
+  if (frame == NULL)
+    return FALSE;
+  struct pgtk_display_info *dpyinfo = FRAME_DISPLAY_INFO (frame);
+  struct frame *focus_frame = dpyinfo->x_focus_frame;
   int focus_state
     = focus_frame ? focus_frame->output_data.pgtk->focus_state : 0;
 
@@ -5423,10 +5433,12 @@ leave_notify_event(GtkWidget *widget, GdkEvent *event, 
gpointer *user_data)
   inev.ie.kind = NO_EVENT;
   inev.ie.arg = Qnil;
 
-  if (!(focus_state & FOCUS_EXPLICIT))
+  if (event->crossing.detail != GDK_NOTIFY_INFERIOR
+      && event->crossing.focus
+      && ! (focus_state & FOCUS_EXPLICIT))
     x_focus_changed (FALSE,
                     FOCUS_IMPLICIT,
-                    FRAME_DISPLAY_INFO(focus_frame), focus_frame, &inev);
+                    dpyinfo, frame, &inev);
   if (inev.ie.kind != NO_EVENT)
     evq_enqueue (&inev);
   return TRUE;
@@ -5446,7 +5458,7 @@ focus_in_event(GtkWidget *widget, GdkEvent *event, 
gpointer *user_data)
   inev.ie.kind = NO_EVENT;
   inev.ie.arg = Qnil;
 
-  x_focus_changed (TRUE, FOCUS_IMPLICIT,
+  x_focus_changed (TRUE, FOCUS_EXPLICIT,
                   FRAME_DISPLAY_INFO(frame), frame, &inev);
   if (inev.ie.kind != NO_EVENT)
     evq_enqueue (&inev);
@@ -5467,7 +5479,7 @@ focus_out_event(GtkWidget *widget, GdkEvent *event, 
gpointer *user_data)
   inev.ie.kind = NO_EVENT;
   inev.ie.arg = Qnil;
 
-  x_focus_changed (FALSE, FOCUS_IMPLICIT,
+  x_focus_changed (FALSE, FOCUS_EXPLICIT,
                   FRAME_DISPLAY_INFO(frame), frame, &inev);
   if (inev.ie.kind != NO_EVENT)
     evq_enqueue(&inev);