From 0ca04ed7aa4fe6844d44c084afd9b5897879eb79 Mon Sep 17 00:00:00 2001
From: Anders Carlsson <andersca@gnu.org>
Date: Tue, 12 Feb 2002 05:01:22 +0000
Subject: [PATCH] Set prelit_control to META_FRAME_CONTROL_NONE.

2002-02-12  Anders Carlsson  <andersca@gnu.org>

	* src/frames.c (meta_frames_manage_window): Set prelit_control
	to META_FRAME_CONTROL_NONE.
	(meta_frames_update_prelit_control): New function for setting
	the prelit control.
	(meta_frames_paint_to_drawable): Set prelight state.
	(meta_frames_enter_notify_event): Update prelit control.
	(meta_frames_leave_notify_event): Likewise.
	(meta_frames_motion_notify_event): Likewise.

	* src/frames.h (struct _MetaUIFrame): add prelit_control.
---
 ChangeLog    | 11 ++++++++++
 src/frames.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++----
 src/frames.h |  2 ++
 3 files changed, 70 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index faa907499..84b761753 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,16 @@
 2002-02-12  Anders Carlsson  <andersca@gnu.org>
 
+	* src/frames.c (meta_frames_manage_window): Set prelit_control
+	to META_FRAME_CONTROL_NONE.
+	(meta_frames_update_prelit_control): New function for setting
+	the prelit control.
+	(meta_frames_paint_to_drawable): Set prelight state.
+	(meta_frames_enter_notify_event): Update prelit control.
+	(meta_frames_leave_notify_event): Likewise.
+	(meta_frames_motion_notify_event): Likewise.
+
+	* src/frames.h (struct _MetaUIFrame): add prelit_control.
+
 	* src/window.c (update_mwm_hints): and MWM_FUNC_ALL 
 	with hints->functions instead of hints->flags.
 
diff --git a/src/frames.c b/src/frames.c
index 5e0e5a457..d6e5764fd 100644
--- a/src/frames.c
+++ b/src/frames.c
@@ -408,6 +408,7 @@ meta_frames_manage_window (MetaFrames *frames,
   frame->text_height = -1;
   frame->title = NULL;
   frame->expose_delayed = FALSE;
+  frame->prelit_control = META_FRAME_CONTROL_NONE;
   
   meta_core_grab_buttons (gdk_display, frame->xwindow);
   
@@ -1089,6 +1090,32 @@ meta_frames_button_release_event    (GtkWidget           *widget,
   return TRUE;
 }
 
+static void
+meta_frames_update_prelit_control (MetaFrames      *frames,
+				   MetaUIFrame     *frame,
+				   MetaFrameControl control)
+{
+  MetaFrameControl old_control;
+
+  /* Only prelight buttons */
+  if (control != META_FRAME_CONTROL_MENU &&
+      control != META_FRAME_CONTROL_MINIMIZE &&
+      control != META_FRAME_CONTROL_MAXIMIZE &&
+      control != META_FRAME_CONTROL_DELETE)
+    control = META_FRAME_CONTROL_NONE;
+
+  if (control == frame->prelit_control)
+    return;
+
+  /* Save the old control so we can unprelight it */
+  old_control = frame->prelit_control;
+
+  frame->prelit_control = control;
+
+  redraw_control (frames, frame, old_control);
+  redraw_control (frames, frame, control);
+}
+
 static gboolean
 meta_frames_motion_notify_event     (GtkWidget           *widget,
                                      GdkEventMotion      *event)
@@ -1124,7 +1151,10 @@ meta_frames_motion_notify_event     (GtkWidget           *widget,
         gdk_window_get_pointer (frame->window, &x, &y, NULL);
 
         control = get_control (frames, frame, x, y);
-        
+
+        /* Update prelit control */
+	meta_frames_update_prelit_control (frames, frame, control);
+	
         cursor = META_CURSOR_DEFAULT;
 
         switch (control)
@@ -1246,7 +1276,6 @@ meta_frames_paint_to_drawable (MetaFrames   *frames,
   
   widget = GTK_WIDGET (frames);
 
-  /* note, prelight not implemented yet */
   i = 0;
   while (i < META_BUTTON_TYPE_LAST)
     {
@@ -1254,6 +1283,24 @@ meta_frames_paint_to_drawable (MetaFrames   *frames,
       
       ++i;
     }
+
+  /* Set prelight state */
+  switch (frame->prelit_control)
+    {
+    case META_FRAME_CONTROL_MENU:
+      button_states[META_BUTTON_TYPE_MENU] = META_BUTTON_STATE_PRELIGHT;
+      break;
+    case META_FRAME_CONTROL_MINIMIZE:
+      button_states[META_BUTTON_TYPE_MINIMIZE] = META_BUTTON_STATE_PRELIGHT;
+      break;
+    case META_FRAME_CONTROL_MAXIMIZE:
+      button_states[META_BUTTON_TYPE_MAXIMIZE] = META_BUTTON_STATE_PRELIGHT;
+      break;
+    case META_FRAME_CONTROL_DELETE:
+      button_states[META_BUTTON_TYPE_CLOSE] = META_BUTTON_STATE_PRELIGHT;
+      break;
+    default:
+    }
   
   grab_frame = meta_core_get_grab_frame (gdk_display);
 
@@ -1316,13 +1363,17 @@ meta_frames_enter_notify_event      (GtkWidget           *widget,
 {
   MetaUIFrame *frame;
   MetaFrames *frames;
-
+  MetaFrameControl control;
+  
   frames = META_FRAMES (widget);
 
   frame = meta_frames_lookup_window (frames, GDK_WINDOW_XID (event->window));
   if (frame == NULL)
     return FALSE;
 
+  control = get_control (frames, frame, event->x, event->y);
+  meta_frames_update_prelit_control (frames, frame, control);
+  
   return TRUE;
 }
 
@@ -1339,12 +1390,14 @@ meta_frames_leave_notify_event      (GtkWidget           *widget,
   if (frame == NULL)
     return FALSE;
 
+  meta_frames_update_prelit_control (frames, frame, META_FRAME_CONTROL_NONE);
+  
   clear_tip (frames);
 
   meta_core_set_screen_cursor (gdk_display,
                                frame->xwindow,
                                META_CURSOR_DEFAULT);
-  
+
   return TRUE;
 }
 
diff --git a/src/frames.h b/src/frames.h
index 66f27c7d9..6b3921440 100644
--- a/src/frames.h
+++ b/src/frames.h
@@ -71,6 +71,8 @@ struct _MetaUIFrame
   int text_height;
   char *title; /* NULL once we have a layout */
   guint expose_delayed : 1;
+
+  MetaFrameControl prelit_control;
 };
 
 struct _MetaFrames