static void
PAGER_Scroll(PAGER_INFO* infoPtr, INT dir)
{
NMPGSCROLL nmpgScroll;
RECT rcWnd;
if (infoPtr->hwndChild)
{
ZeroMemory (&nmpgScroll, sizeof (NMPGSCROLL));
nmpgScroll.hdr.hwndFrom = infoPtr->hwndSelf;
nmpgScroll.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
nmpgScroll.hdr.code = PGN_SCROLL;
GetWindowRect(infoPtr->hwndSelf, &rcWnd);
GetClientRect(infoPtr->hwndSelf, &nmpgScroll.rcParent);
nmpgScroll.iXpos = nmpgScroll.iYpos = 0;
nmpgScroll.iDir = dir;
if (infoPtr->dwStyle & PGS_HORZ)
{
nmpgScroll.iScroll = rcWnd.right - rcWnd.left;
nmpgScroll.iXpos = infoPtr->nPos;
}
else
{
nmpgScroll.iScroll = rcWnd.bottom - rcWnd.top;
nmpgScroll.iYpos = infoPtr->nPos;
}
nmpgScroll.iScroll -= 2*infoPtr->nButtonSize;
SendMessageW (infoPtr->hwndNotify, WM_NOTIFY,
(WPARAM)nmpgScroll.hdr.idFrom, (LPARAM)&nmpgScroll);
TRACE("[%p] PGN_SCROLL returns iScroll=%d\n", infoPtr->hwndSelf, nmpgScroll.iScroll);
if (nmpgScroll.iScroll > 0)
{
infoPtr->direction = dir;
if (dir == PGF_SCROLLLEFT || dir == PGF_SCROLLUP)
PAGER_SetPos(infoPtr, infoPtr->nPos - nmpgScroll.iScroll, TRUE);
else
PAGER_SetPos(infoPtr, infoPtr->nPos + nmpgScroll.iScroll, TRUE);
}
else
infoPtr->direction = -1;
}
}
static LRESULT
PAGER_RecalcSize(PAGER_INFO *infoPtr)
{
TRACE("[%p]\n", infoPtr->hwndSelf);
if (infoPtr->hwndChild)
{
INT scrollRange = PAGER_GetScrollRange(infoPtr);
if (scrollRange <= 0)
{
infoPtr->nPos = -1;
PAGER_SetPos(infoPtr, 0, FALSE);
}
else
PAGER_PositionChildWnd(infoPtr);
}
return 1;
}
static LRESULT
PAGER_SetChild (PAGER_INFO* infoPtr, HWND hwndChild)
{
infoPtr->hwndChild = IsWindow (hwndChild) ? hwndChild : 0;
if (infoPtr->hwndChild)
{
TRACE("[%p] hwndChild=%p\n", infoPtr->hwndSelf, infoPtr->hwndChild);
SetWindowPos(infoPtr->hwndSelf, 0, 0, 0, 0, 0,
SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE);
/* position child within the page scroller */
SetWindowPos(infoPtr->hwndChild, HWND_TOP,
0,0,0,0,
SWP_SHOWWINDOW | SWP_NOSIZE); /* native is 0 */
infoPtr->nPos = -1;
PAGER_SetPos(infoPtr, 0, FALSE);
}
return 0;
}
static LRESULT
PAGER_SetChild (PAGER_INFO* infoPtr, HWND hwndChild)
{
INT hw;
infoPtr->hwndChild = IsWindow (hwndChild) ? hwndChild : 0;
if (infoPtr->hwndChild)
{
TRACE("[%p] hwndChild=%p\n", infoPtr->hwndSelf, infoPtr->hwndChild);
if (infoPtr->dwStyle & PGS_HORZ) {
hw = PAGER_SetFixedHeight(infoPtr);
/* adjust non-scrollable dimension to fit the child */
SetWindowPos(infoPtr->hwndSelf, 0, 0, 0, hw, infoPtr->nHeight,
SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOZORDER |
SWP_NOSIZE | SWP_NOACTIVATE);
}
else {
hw = PAGER_SetFixedWidth(infoPtr);
/* adjust non-scrollable dimension to fit the child */
SetWindowPos(infoPtr->hwndSelf, 0, 0, 0, infoPtr->nWidth, hw,
SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOZORDER |
SWP_NOSIZE | SWP_NOACTIVATE);
}
/* position child within the page scroller */
SetWindowPos(infoPtr->hwndChild, HWND_TOP,
0,0,0,0,
SWP_SHOWWINDOW | SWP_NOSIZE); /* native is 0 */
infoPtr->nPos = -1;
PAGER_SetPos(infoPtr, 0, FALSE);
}
return 0;
}
static LRESULT WINAPI
PAGER_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
PAGER_INFO *infoPtr = (PAGER_INFO *)GetWindowLongPtrW(hwnd, 0);
if (!infoPtr && (uMsg != WM_CREATE))
return DefWindowProcW (hwnd, uMsg, wParam, lParam);
switch (uMsg)
{
case EM_FMTLINES:
return PAGER_FmtLines(infoPtr);
case PGM_FORWARDMOUSE:
return PAGER_ForwardMouse (infoPtr, (BOOL)wParam);
case PGM_GETBKCOLOR:
return PAGER_GetBkColor(infoPtr);
case PGM_GETBORDER:
return PAGER_GetBorder(infoPtr);
case PGM_GETBUTTONSIZE:
return PAGER_GetButtonSize(infoPtr);
case PGM_GETPOS:
return PAGER_GetPos(infoPtr);
case PGM_GETBUTTONSTATE:
return PAGER_GetButtonState (infoPtr, (INT)lParam);
/* case PGM_GETDROPTARGET: */
case PGM_RECALCSIZE:
return PAGER_RecalcSize(infoPtr);
case PGM_SETBKCOLOR:
return PAGER_SetBkColor (infoPtr, (COLORREF)lParam);
case PGM_SETBORDER:
return PAGER_SetBorder (infoPtr, (INT)lParam);
case PGM_SETBUTTONSIZE:
return PAGER_SetButtonSize (infoPtr, (INT)lParam);
case PGM_SETCHILD:
return PAGER_SetChild (infoPtr, (HWND)lParam);
case PGM_SETPOS:
return PAGER_SetPos(infoPtr, (INT)lParam, FALSE);
case WM_CREATE:
return PAGER_Create (hwnd, (LPCREATESTRUCTW)lParam);
case WM_DESTROY:
return PAGER_Destroy (infoPtr);
case WM_SIZE:
return PAGER_Size (infoPtr, (INT)wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
case WM_NCPAINT:
return PAGER_NCPaint (infoPtr, (HRGN)wParam);
case WM_WINDOWPOSCHANGING:
return PAGER_WindowPosChanging (infoPtr, (WINDOWPOS*)lParam);
case WM_STYLECHANGED:
return PAGER_StyleChanged(infoPtr, wParam, (LPSTYLESTRUCT)lParam);
case WM_NCCALCSIZE:
return PAGER_NCCalcSize (infoPtr, wParam, (LPRECT)lParam);
case WM_NCHITTEST:
return PAGER_NCHitTest (infoPtr, (short)LOWORD(lParam), (short)HIWORD(lParam));
case WM_MOUSEMOVE:
if (infoPtr->bForward && infoPtr->hwndChild)
PostMessageW(infoPtr->hwndChild, WM_MOUSEMOVE, wParam, lParam);
return PAGER_MouseMove (infoPtr, (INT)wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
case WM_LBUTTONDOWN:
return PAGER_LButtonDown (infoPtr, (INT)wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
case WM_LBUTTONUP:
return PAGER_LButtonUp (infoPtr, (INT)wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
case WM_ERASEBKGND:
return PAGER_EraseBackground (infoPtr, (HDC)wParam);
case WM_TIMER:
return PAGER_Timer (infoPtr, (INT)wParam);
case WM_NOTIFY:
case WM_COMMAND:
return SendMessageW (infoPtr->hwndNotify, uMsg, wParam, lParam);
default:
return DefWindowProcW (hwnd, uMsg, wParam, lParam);
}
}
