Fix trackbar size

[Maxime Bellengé <maxime.bellenge@laposte.net>]

ChangeLog
  * Fix the computation of the trackbar's size


a+

-- 
Maxime Bellengà <maxime.bellenge@laposte.net>

Index: wine/dlls/comctl32/trackbar.c
===================================================================
RCS file: /home/wine/wine/dlls/comctl32/trackbar.c,v
retrieving revision 1.46
diff -u -r1.46 trackbar.c
--- wine/dlls/comctl32/trackbar.c	8 Jan 2003 21:09:27 -0000	1.46
+++ wine/dlls/comctl32/trackbar.c	22 Apr 2003 21:49:07 -0000
@@ -4,6 +4,7 @@
  * Copyright 1998, 1999 Eric Kohl <ekohl@abo.rhein-zeitung.de>
  * Copyright 1998, 1999 Alex Priem <alexp@sci.kun.nl>
  * Copyright 2002 Dimitrie O. Paun <dimi@bigfoot.com>
+ * Copyright 2003 Maxime Bellengé <maxime.bellenge@laposte.net>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -231,13 +232,13 @@
         channel->top    = lpRect.top + offsetedge;
         channel->bottom = lpRect.bottom - offsetedge;
         channel->left = lpRect.left + offsetthumb;
-	if (dwStyle & (TBS_BOTH | TBS_LEFT)) channel->left += 8;
+	if (dwStyle & (TBS_BOTH | TBS_LEFT)) channel->left += (lpRect.right-lpRect.left-offsetthumb-cyChannel)/2;
         channel->right = channel->left + cyChannel;
     } else {
         channel->left = lpRect.left + offsetedge;
         channel->right = lpRect.right - offsetedge;
         channel->top = lpRect.top + offsetthumb;
-        if (dwStyle & (TBS_BOTH | TBS_TOP)) channel->top += 8;
+	if (dwStyle & (TBS_BOTH | TBS_TOP)) channel->top += (lpRect.bottom-lpRect.top-offsetedge-cyChannel)/2;
         channel->bottom   = channel->top + cyChannel;
     }
 }
@@ -247,18 +248,21 @@
 {
     int range, width, thumbdepth;
     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
+    RECT lpRect;
 
     range=infoPtr->lRangeMax - infoPtr->lRangeMin;
     thumbdepth = ((int)(infoPtr->uThumbLen / 4.5) * 2) + 2;
 
     if (!range) range = 1;
 
+    GetClientRect(infoPtr->hwndSelf, &lpRect);
+
     if (dwStyle & TBS_VERT)
     {
     	width=infoPtr->rcChannel.bottom - infoPtr->rcChannel.top;
 
         if (dwStyle & (TBS_BOTH | TBS_LEFT))
-            thumb->left = 10;
+	    thumb->left = (lpRect.right - lpRect.bottom - infoPtr->uThumbLen)/2;
         else
             thumb->left = 2;
         thumb->right = thumb -> left + infoPtr->uThumbLen;
@@ -276,7 +280,7 @@
                       thumbdepth/2;
         thumb->right = thumb->left + thumbdepth;
         if (dwStyle & (TBS_BOTH | TBS_TOP))
-              thumb->top = 10;
+	  thumb->top = (lpRect.bottom - lpRect.top - infoPtr->uThumbLen)/2;
         else
               thumb->top = 2;
         thumb->bottom = thumb->top + infoPtr->uThumbLen;
@@ -1208,7 +1212,10 @@
 static LRESULT
 TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
 {
-    infoPtr->uThumbLen = 23;   /* initial thumb length */
+    /* initial thumb length */
+    RECT rect;
+    GetClientRect(infoPtr->hwndSelf,&rect);
+    infoPtr->uThumbLen = (rect.bottom - rect.top - 6);
 
     TRACKBAR_CalcChannel (infoPtr);
     TRACKBAR_UpdateThumb (infoPtr);