HBRUSH
APIENTRY
NtUserGetControlBrush(
HWND hwnd,
HDC hdc,
UINT ctlType)
{
PWND pwnd;
HBRUSH hBrush = NULL;
UserEnterExclusive();
if ( (pwnd = UserGetWindowObject(hwnd)) &&
((ctlType - WM_CTLCOLORMSGBOX) < CTLCOLOR_MAX) &&
hdc )
{
hBrush = GetControlBrush(pwnd, hdc, ctlType);
}
UserLeave();
return hBrush;
}
static void
IntDrawScrollInterior(PWND pWnd, HDC hDC, INT nBar, BOOL Vertical, PSCROLLBARINFO ScrollBarInfo)
{
INT ThumbSize = ScrollBarInfo->xyThumbBottom - ScrollBarInfo->xyThumbTop;
INT ThumbTop = ScrollBarInfo->xyThumbTop;
RECT Rect;
HBRUSH hSaveBrush, hBrush;
BOOL TopSelected = FALSE, BottomSelected = FALSE;
if (ScrollBarInfo->rgstate[SCROLL_TOP_RECT] & STATE_SYSTEM_PRESSED)
TopSelected = TRUE;
if (ScrollBarInfo->rgstate[SCROLL_BOTTOM_RECT] & STATE_SYSTEM_PRESSED)
BottomSelected = TRUE;
/*
* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
* The window-owned scrollbars need to call DefWndControlColor
* to correctly setup default scrollbar colors
*/
if (nBar == SB_CTL)
{
hBrush = GetControlBrush( pWnd, hDC, WM_CTLCOLORSCROLLBAR);
if (!hBrush)
hBrush = IntGetSysColorBrush(COLOR_SCROLLBAR);
}
else
{
hBrush = DefWndControlColor(hDC, CTLCOLOR_SCROLLBAR);
}
hSaveBrush = NtGdiSelectBrush(hDC, hBrush);
/* Calculate the scroll rectangle */
if (Vertical)
{
Rect.top = ScrollBarInfo->rcScrollBar.top + ScrollBarInfo->dxyLineButton;
Rect.bottom = ScrollBarInfo->rcScrollBar.bottom - ScrollBarInfo->dxyLineButton;
Rect.left = ScrollBarInfo->rcScrollBar.left;
Rect.right = ScrollBarInfo->rcScrollBar.right;
}
else
{
Rect.top = ScrollBarInfo->rcScrollBar.top;
Rect.bottom = ScrollBarInfo->rcScrollBar.bottom;
Rect.left = ScrollBarInfo->rcScrollBar.left + ScrollBarInfo->dxyLineButton;
Rect.right = ScrollBarInfo->rcScrollBar.right - ScrollBarInfo->dxyLineButton;
}
/* Draw the scroll rectangles and thumb */
if (!ScrollBarInfo->xyThumbBottom)
{
NtGdiPatBlt(hDC, Rect.left, Rect.top, Rect.right - Rect.left,
Rect.bottom - Rect.top, PATCOPY);
/* Cleanup and return */
NtGdiSelectBrush(hDC, hSaveBrush);
return;
}
ThumbTop -= ScrollBarInfo->dxyLineButton;
if (ScrollBarInfo->dxyLineButton)
{
if (Vertical)
{
if (ThumbSize)
{
NtGdiPatBlt(hDC, Rect.left, Rect.top, Rect.right - Rect.left,
ThumbTop, TopSelected ? BLACKNESS : PATCOPY);
Rect.top += ThumbTop;
NtGdiPatBlt(hDC, Rect.left, Rect.top + ThumbSize, Rect.right - Rect.left,
Rect.bottom - Rect.top - ThumbSize, BottomSelected ? BLACKNESS : PATCOPY);
Rect.bottom = Rect.top + ThumbSize;
}
else
{
if (ThumbTop)
{
NtGdiPatBlt(hDC, Rect.left, ScrollBarInfo->dxyLineButton,
Rect.right - Rect.left, Rect.bottom - Rect.top, PATCOPY);
}
}
}
else
{
if (ThumbSize)
{
NtGdiPatBlt(hDC, Rect.left, Rect.top, ThumbTop,
Rect.bottom - Rect.top, TopSelected ? BLACKNESS : PATCOPY);
Rect.left += ThumbTop;
NtGdiPatBlt(hDC, Rect.left + ThumbSize, Rect.top,
Rect.right - Rect.left - ThumbSize, Rect.bottom - Rect.top,
BottomSelected ? BLACKNESS : PATCOPY);
Rect.right = Rect.left + ThumbSize;
}
else
{
if (ThumbTop)
{
NtGdiPatBlt(hDC, ScrollBarInfo->dxyLineButton, Rect.top,
Rect.right - Rect.left, Rect.bottom - Rect.top, PATCOPY);
}
}
}
}
/* Draw the thumb */
if (ThumbSize)
DrawEdge(hDC, &Rect, EDGE_RAISED, BF_RECT | BF_MIDDLE);
/* Cleanup */
NtGdiSelectBrush(hDC, hSaveBrush);
}
