--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/scrollbar-msw.c	Mon Aug 13 10:11:40 2007 +0200
@@ -0,0 +1,243 @@
+/* scrollbar implementation -- mswindows interface.
+   Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
+   Copyright (C) 1994 Amdhal Corporation.
+   Copyright (C) 1995 Sun Microsystems, Inc.
+   Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: Not in FSF. */
+
+#include <config.h>
+#include "lisp.h"
+
+#include "console-msw.h"
+#include "frame.h"
+#include "window.h"
+#include "scrollbar-msw.h"
+#include "events.h"
+#include "event-msw.h"
+
+static void
+mswindows_create_scrollbar_instance (struct frame *f, int vertical,
+				     struct scrollbar_instance *sb)
+{
+  int orientation;
+  
+  sb->scrollbar_data = xnew_and_zero (struct mswindows_scrollbar_data);
+  
+  if (vertical)
+    orientation = SBS_VERT;
+  else
+    orientation = SBS_HORZ;
+  
+  SCROLLBAR_MSW_HANDLE (sb) =
+    CreateWindowEx(0, "SCROLLBAR", 0, orientation|WS_CHILD,
+		 CW_USEDEFAULT, CW_USEDEFAULT,
+		 CW_USEDEFAULT, CW_USEDEFAULT,
+		 FRAME_MSWINDOWS_HANDLE (f),
+		 NULL, NULL, NULL);
+  SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL;
+  GetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
+		&SCROLLBAR_MSW_INFO (sb));
+  SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
+
+#if 0
+  {
+	  HWND h = SCROLLBAR_MSW_HANDLE (sb);
+	  int x = SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
+	  int y = GetLastError();
+	  struct scrollbar_instance *z = (struct scrollbar_instance *)GetWindowLong (SCROLLBAR_MSW_HANDLE(sb),
+		  GWL_USERDATA);
+	  *z = *z;
+  }
+#endif
+}
+
+static void
+mswindows_free_scrollbar_instance (struct scrollbar_instance *sb)
+{
+  DestroyWindow (SCROLLBAR_MSW_HANDLE (sb));
+  if (sb->scrollbar_data) 
+    xfree (sb->scrollbar_data);
+}
+
+static void
+mswindows_release_scrollbar_instance (struct scrollbar_instance *sb)
+{
+  ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, 0);
+  SCROLLBAR_MSW_SIZE (sb) = 0;
+}
+
+#define UPDATE_POS_FIELD(field)						   \
+  if (new_##field >= 0 && SCROLLBAR_MSW_DATA (sb)->field != new_##field) { \
+    SCROLLBAR_MSW_DATA (sb)->field = new_##field;			   \
+    pos_changed = 1;							   \
+  }
+
+static void
+mswindows_update_scrollbar_instance_values (struct window *w,
+					    struct scrollbar_instance *sb,
+					    int new_line_increment,
+					    int new_page_increment,
+					    int new_minimum, int new_maximum,
+					    int new_slider_size,
+					    int new_slider_position,
+					    int new_scrollbar_width,
+					    int new_scrollbar_height,
+					    int new_scrollbar_x,
+					    int new_scrollbar_y)
+{
+  struct frame *f;
+  int pos_changed = 0;
+
+  f = XFRAME (w->frame);
+
+  /* These might be optimized, but since at least one will change at each
+     call, it's probably not worth it. */
+  SCROLLBAR_MSW_INFO (sb).nMin = new_minimum - 1;
+  SCROLLBAR_MSW_INFO (sb).nMax = new_maximum - 1;
+  SCROLLBAR_MSW_INFO (sb).nPage = new_slider_size;
+  SCROLLBAR_MSW_INFO (sb).nPos = new_slider_position;
+  SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL;
+  
+  SetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL, &SCROLLBAR_MSW_INFO (sb),
+		TRUE);
+
+  UPDATE_POS_FIELD (scrollbar_x);
+  UPDATE_POS_FIELD (scrollbar_y);
+  UPDATE_POS_FIELD (scrollbar_width);
+  UPDATE_POS_FIELD (scrollbar_height);
+
+  if (pos_changed) 
+    {
+      MoveWindow(SCROLLBAR_MSW_HANDLE (sb),
+		 new_scrollbar_x, new_scrollbar_y,
+		 new_scrollbar_width, new_scrollbar_height,
+		 TRUE);
+    }
+}
+
+static void
+mswindows_update_scrollbar_instance_status (struct window *w,
+					    int active, int size,
+					    struct scrollbar_instance *sb)
+{
+  struct frame *f = XFRAME (w->frame);
+  
+  if (SCROLLBAR_MSW_SIZE (sb) != size) {
+    SCROLLBAR_MSW_SIZE (sb) = size;
+    ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
+		   SCROLLBAR_MSW_SIZE (sb));
+    FRAMEMETH (f, set_frame_size, (f, FRAME_WIDTH (f), FRAME_HEIGHT (f)));
+  }
+}
+
+void
+mswindows_handle_scrollbar_event (HWND hwnd, int code, int pos)
+{
+  struct frame *f;
+  Lisp_Object win;
+  struct scrollbar_instance *sb;
+  SCROLLINFO scrollinfo;
+
+  sb = (struct scrollbar_instance *)GetWindowLong (hwnd, GWL_USERDATA);
+  win = real_window (sb->mirror, 1);
+  f = XFRAME (XWINDOW (win)->frame);
+
+  switch (code)
+    {
+    case SB_LINEDOWN:
+      enqueue_misc_user_event(win, Qscrollbar_line_down, win);
+      break;
+	  
+    case SB_LINEUP:
+      enqueue_misc_user_event(win, Qscrollbar_line_up, win);
+      break;
+	  
+    case SB_PAGEDOWN:
+      enqueue_misc_user_event(win, Qscrollbar_page_down, Fcons (win, Qnil));
+      break;
+
+    case SB_PAGEUP:
+      enqueue_misc_user_event(win, Qscrollbar_page_up, Fcons (win, Qnil));
+      break;
+	  
+    case SB_BOTTOM:
+      enqueue_misc_user_event(win, Qscrollbar_to_bottom, win);
+      break;
+
+    case SB_TOP:
+      enqueue_misc_user_event(win, Qscrollbar_to_top, win);
+      break;
+
+    case SB_THUMBTRACK:
+    case SB_THUMBPOSITION:
+      enqueue_misc_user_event (win, Qscrollbar_vertical_drag,
+			       Fcons (win, make_int (pos)));
+      break;
+    }
+}
+
+#ifdef MEMORY_USAGE_STATS
+
+static int
+mswindows_compute_scrollbar_instance_usage (struct device *d,
+				    struct scrollbar_instance *inst,
+				    struct overhead_stats *ovstats)
+{
+  int total = 0;
+
+  while (inst)
+    {
+      struct mswindows_scrollbar_data *data =
+	(struct mswindows_scrollbar_data *) inst->scrollbar_data;
+
+      total += malloced_storage_size (data, sizeof (*data), ovstats);
+      inst = inst->next;
+    }
+
+  return total;
+}
+
+#endif /* MEMORY_USAGE_STATS */
+
+/************************************************************************/
+/*                            initialization                            */
+/************************************************************************/
+
+void
+console_type_create_scrollbar_mswindows (void)
+{
+  CONSOLE_HAS_METHOD (mswindows, create_scrollbar_instance);
+  CONSOLE_HAS_METHOD (mswindows, free_scrollbar_instance);
+  CONSOLE_HAS_METHOD (mswindows, release_scrollbar_instance);
+  CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_values);
+  CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_status);
+/*  CONSOLE_HAS_METHOD (mswindows, scrollbar_width_changed_in_frame); */
+#ifdef MEMORY_USAGE_STATS
+  CONSOLE_HAS_METHOD (mswindows, compute_scrollbar_instance_usage);
+#endif
+}
+
+void
+vars_of_scrollbar_mswindows(void)
+{
+  Fprovide (intern ("mswindows-scrollbars"));
+}
+