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Fix many of the scrollbar issues. However, MDI Scrollbars are still not working perfectly. Patch by tinus <o112w8r02@sneakemail.com>. Fixes bug 606

Browse source 
svn path=/trunk/; revision=14946
This commit is contained in:
Alex Ionescu 2005-05-02 11:42:41 +00:00
parent dff743f85a
commit 6c331c3529
2 changed files with 32 additions and 7 deletions
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37
reactos/lib/user32/windows/mdi.c
View file

@ -2034,8 +2034,16 @@ void WINAPI CalcChildScroll( HWND hwnd, INT scroll )
#ifndef __REACTOS__
HWND *list;
#else
WINDOWINFO WindowInfo;
HWND hWndCurrent;
#endif
/* The rectangle returned by GetClientRect always has 0,0 as top left
* because it is in client coordinates. The rectangles returned by
* GetWindowRect are in screen coordinates to make this complicated.
*
* Apparently (in ReactOS at least) the rcClient returned by GetWindowInfo
* is in screen coordinates too.
*/
GetClientRect( hwnd, &clientRect );
SetRectEmpty( &childRect );
@ -2063,6 +2071,13 @@ void WINAPI CalcChildScroll( HWND hwnd, INT scroll )
HeapFree( GetProcessHeap(), 0, list );
}
#else
WindowInfo.cbSize = sizeof(WindowInfo);
if (!GetWindowInfo(hwnd, &WindowInfo))
{
ERR("Can't get window info\n");
return;
}
hWndCurrent = GetWindow(hwnd, GW_CHILD);
while (hWndCurrent != NULL)
{
@ -2077,6 +2092,9 @@ void WINAPI CalcChildScroll( HWND hwnd, INT scroll )
RECT WindowRect;
GetWindowRect( hWndCurrent, &WindowRect );
OffsetRect(&WindowRect,
-WindowInfo.rcClient.left,
-WindowInfo.rcClient.top);
UnionRect( &childRect, &WindowRect, &childRect );
}
hWndCurrent = GetWindow(hWndCurrent, GW_HWNDNEXT);
@ -2086,23 +2104,30 @@ void WINAPI CalcChildScroll( HWND hwnd, INT scroll )
/* set common info values */
info.cbSize = sizeof(info);
info.fMask = SIF_POS | SIF_RANGE;
info.fMask = SIF_POS | SIF_RANGE | SIF_PAGE;
/* set the specific */
/* set the specific scrollbars*/
/* Note how we set nPos to 0 because we scroll the clients instead of
* the window, and we set nPage to 1 bigger than the clientRect because
* otherwise the scrollbar never disables. This causes a somewhat ugly
* effect though while scrolling.
*/
switch( scroll )
{
case SB_BOTH:
case SB_HORZ:
info.nMin = childRect.left;
info.nMax = childRect.right - clientRect.right;
info.nPos = clientRect.left - childRect.left;
info.nMax = childRect.right;
info.nPos = 0;
info.nPage = 1 + clientRect.right - clientRect.left;
SetScrollInfo(hwnd, SB_HORZ, &info, TRUE);
if (scroll == SB_HORZ) break;
/* fall through */
case SB_VERT:
info.nMin = childRect.top;
info.nMax = childRect.bottom - clientRect.bottom;
info.nPos = clientRect.top - childRect.top;
info.nMax = childRect.bottom;
info.nPos = 0;
info.nPage = 1 + clientRect.bottom - clientRect.top;
SetScrollInfo(hwnd, SB_VERT, &info, TRUE);
break;
}

2
reactos/subsys/win32k/ntuser/scrollbar.c
View file

@ -360,7 +360,7 @@ IntSetScrollInfo(PWINDOW_OBJECT Window, INT nBar, LPCSCROLLINFO lpsi, BOOL bRedr
/* Check if the scrollbar should be hidden or disabled */
if (0 != (lpsi->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL)))
{
if (Info->nMin >= Info->nMax - max(Info->nPage - 1, 0))
if (Info->nMin >= (int)(Info->nMax - max(Info->nPage - 1, 0)))
{
/* Hide or disable scroll-bar */
if (0 != (lpsi->fMask & SIF_DISABLENOSCROLL))