updown.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

}

/***********************************************************************
 * UPDOWN_Draw
 *
 * Draw the arrows. The background need not be erased.
 */
static LRESULT UPDOWN_Draw (const UPDOWN_INFO *infoPtr, HDC hdc)
{
    BOOL uPressed, uHot, dPressed, dHot;
    RECT rect;
    HTHEME theme = GetWindowTheme (infoPtr->Self);
    int uPart = 0, uState = 0, dPart = 0, dState = 0;
    BOOL needBuddyBg = FALSE;

    uPressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_INCR);
    uHot = (infoPtr->Flags & FLAG_INCR) && (infoPtr->Flags & FLAG_MOUSEIN);
    dPressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_DECR);
    dHot = (infoPtr->Flags & FLAG_DECR) && (infoPtr->Flags & FLAG_MOUSEIN);
    if (theme) {
        uPart = (infoPtr->dwStyle & UDS_HORZ) ? SPNP_UPHORZ : SPNP_UP;
        uState = (infoPtr->dwStyle & WS_DISABLED) ? DNS_DISABLED 
            : (uPressed ? DNS_PRESSED : (uHot ? DNS_HOT : DNS_NORMAL));
        dPart = (infoPtr->dwStyle & UDS_HORZ) ? SPNP_DOWNHORZ : SPNP_DOWN;
        dState = (infoPtr->dwStyle & WS_DISABLED) ? DNS_DISABLED 
            : (dPressed ? DNS_PRESSED : (dHot ? DNS_HOT : DNS_NORMAL));
        needBuddyBg = IsWindow (infoPtr->Buddy)
            && (IsThemeBackgroundPartiallyTransparent (theme, uPart, uState)
              || IsThemeBackgroundPartiallyTransparent (theme, dPart, dState));
    }

    /* Draw the common border between ourselves and our buddy */
    if (UPDOWN_HasBuddyBorder(infoPtr) || needBuddyBg) {
        if (!theme || !UPDOWN_DrawBuddyBackground (infoPtr, hdc)) {
            GetClientRect(infoPtr->Self, &rect);
	    DrawEdge(hdc, &rect, EDGE_SUNKEN,
		     BF_BOTTOM | BF_TOP |
		     (infoPtr->dwStyle & UDS_ALIGNLEFT ? BF_LEFT : BF_RIGHT));
        }
    }

    /* Draw the incr button */
    UPDOWN_GetArrowRect (infoPtr, &rect, FLAG_INCR);
    if (theme) {
        DrawThemeBackground(theme, hdc, uPart, uState, &rect, NULL);
    } else {
        DrawFrameControl(hdc, &rect, DFC_SCROLL,
            (infoPtr->dwStyle & UDS_HORZ ? DFCS_SCROLLRIGHT : DFCS_SCROLLUP) |
            ((infoPtr->dwStyle & UDS_HOTTRACK) && uHot ? DFCS_HOT : 0) |
            (uPressed ? DFCS_PUSHED : 0) |
            (infoPtr->dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
    }

    /* Draw the decr button */
    UPDOWN_GetArrowRect(infoPtr, &rect, FLAG_DECR);
    if (theme) {
        DrawThemeBackground(theme, hdc, dPart, dState, &rect, NULL);
    } else {
        DrawFrameControl(hdc, &rect, DFC_SCROLL,
            (infoPtr->dwStyle & UDS_HORZ ? DFCS_SCROLLLEFT : DFCS_SCROLLDOWN) |
            ((infoPtr->dwStyle & UDS_HOTTRACK) && dHot ? DFCS_HOT : 0) |
            (dPressed ? DFCS_PUSHED : 0) |
            (infoPtr->dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
    }

    return 0;
}

/***********************************************************************
 * UPDOWN_Paint
 *
 * Asynchronous drawing (must ONLY be used in WM_PAINT).
 * Calls UPDOWN_Draw.
 */
static LRESULT UPDOWN_Paint (const UPDOWN_INFO *infoPtr, HDC hdc)
{
    PAINTSTRUCT ps;
    if (hdc) return UPDOWN_Draw (infoPtr, hdc);
    hdc = BeginPaint (infoPtr->Self, &ps);
    UPDOWN_Draw (infoPtr, hdc);
    EndPaint (infoPtr->Self, &ps);
    return 0;
}

/***********************************************************************
 * UPDOWN_KeyPressed
 *
 * Handle key presses (up & down) when we have to do so
 */
static LRESULT UPDOWN_KeyPressed(UPDOWN_INFO *infoPtr, int key)
{
    int arrow;

    if (key == VK_UP) arrow = FLAG_INCR;
    else if (key == VK_DOWN) arrow = FLAG_DECR;
    else return 1;

    UPDOWN_GetBuddyInt (infoPtr);
    infoPtr->Flags &= ~FLAG_ARROW;
    infoPtr->Flags |= FLAG_PRESSED | arrow;
    InvalidateRect (infoPtr->Self, NULL, FALSE);
    SetTimer(infoPtr->Self, TIMER_AUTOPRESS, AUTOPRESS_DELAY, 0);
    UPDOWN_DoAction (infoPtr, 1, arrow);
    return 0;
}

/***********************************************************************
 * UPDOWN_Buddy_SubclassProc used to handle messages sent to the buddy
 *                           control.
 */
static LRESULT CALLBACK
UPDOWN_Buddy_SubclassProc(HWND  hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    WNDPROC superClassWndProc = (WNDPROC)GetPropW(hwnd, BUDDY_SUPERCLASS_WNDPROC);

    TRACE("hwnd=%p, wndProc=%p, uMsg=%04x, wParam=%08lx, lParam=%08lx\n",
          hwnd, superClassWndProc, uMsg, wParam, lParam);

    if (uMsg == WM_KEYDOWN) {
        HWND upDownHwnd = GetPropW(hwnd, BUDDY_UPDOWN_HWND);

	UPDOWN_KeyPressed(UPDOWN_GetInfoPtr(upDownHwnd), (int)wParam);
    }

    return CallWindowProcW( superClassWndProc, hwnd, uMsg, wParam, lParam);
}

/***********************************************************************
 *           UPDOWN_SetBuddy
 *
 * Sets bud as a new Buddy.
 * Then, it should subclass the buddy
 * If window has the UDS_ARROWKEYS, it subcalsses the buddy window to
 * process the UP/DOWN arrow keys.
 * If window has the UDS_ALIGNLEFT or UDS_ALIGNRIGHT style
 * the size/pos of the buddy and the control are adjusted accordingly.
 */
static HWND UPDOWN_SetBuddy (UPDOWN_INFO* infoPtr, HWND bud)
{
    static const WCHAR editW[] = { 'E', 'd', 'i', 't', 0 };
    static const WCHAR listboxW[] = { 'L', 'i', 's', 't', 'b', 'o', 'x', 0 };
    RECT  budRect;  /* new coord for the buddy */
    int   x, width;  /* new x position and width for the up-down */
    WNDPROC baseWndProc;
    WCHAR buddyClass[40];
    HWND ret;

    TRACE("(hwnd=%p, bud=%p)\n", infoPtr->Self, bud);

    ret = infoPtr->Buddy;

    /* there is already a body assigned */
    if (infoPtr->Buddy)  RemovePropW(infoPtr->Buddy, BUDDY_UPDOWN_HWND);

    if(!IsWindow(bud))
        bud = 0;

    /* Store buddy window handle */
    infoPtr->Buddy = bud;

    if(bud) {

        /* keep upDown ctrl hwnd in a buddy property */
        SetPropW( bud, BUDDY_UPDOWN_HWND, infoPtr->Self);

        /* Store buddy window class type */
        infoPtr->BuddyType = BUDDY_TYPE_UNKNOWN;
        if (GetClassNameW(bud, buddyClass, COUNT_OF(buddyClass))) {
            if (lstrcmpiW(buddyClass, editW) == 0)
                infoPtr->BuddyType = BUDDY_TYPE_EDIT;
            else if (lstrcmpiW(buddyClass, listboxW) == 0)
                infoPtr->BuddyType = BUDDY_TYPE_LISTBOX;
        }

        if(infoPtr->dwStyle & UDS_ARROWKEYS){
            /* Note that I don't clear the BUDDY_SUPERCLASS_WNDPROC property
               when we reset the upDown ctrl buddy to another buddy because it is not
               good to break the window proc chain. */
            if (!GetPropW(bud, BUDDY_SUPERCLASS_WNDPROC)) {
                baseWndProc = (WNDPROC)SetWindowLongPtrW(bud, GWLP_WNDPROC, (LPARAM)UPDOWN_Buddy_SubclassProc);
                SetPropW(bud, BUDDY_SUPERCLASS_WNDPROC, (HANDLE)baseWndProc);
            }
        }

        /* Get the rect of the buddy relative to its parent */
        GetWindowRect(infoPtr->Buddy, &budRect);
        MapWindowPoints(HWND_DESKTOP, GetParent(infoPtr->Buddy), (POINT *)(&budRect.left), 2);

        /* now do the positioning */
        if  (infoPtr->dwStyle & UDS_ALIGNLEFT) {
            x  = budRect.left;
            budRect.left += DEFAULT_WIDTH + DEFAULT_XSEP;
        } else if (infoPtr->dwStyle & UDS_ALIGNRIGHT) {
            budRect.right -= DEFAULT_WIDTH + DEFAULT_XSEP;
            x  = budRect.right+DEFAULT_XSEP;
        } else {
            /* nothing to do */
            return ret;
        }

        /* first adjust the buddy to accommodate the up/down */
        SetWindowPos(infoPtr->Buddy, 0, budRect.left, budRect.top,
                     budRect.right  - budRect.left, budRect.bottom - budRect.top,
                     SWP_NOACTIVATE|SWP_NOZORDER);

        /* now position the up/down */
        /* Since the UDS_ALIGN* flags were used, */
        /* we will pick the position and size of the window. */
        width = DEFAULT_WIDTH;

        /*
         * If the updown has a buddy border, it has to overlap with the buddy
         * to look as if it is integrated with the buddy control.
         * We nudge the control or change its size to overlap.
         */
        if (UPDOWN_HasBuddyBorder(infoPtr)) {
            if(infoPtr->dwStyle & UDS_ALIGNLEFT)
                width += DEFAULT_BUDDYBORDER;
            else
                x -= DEFAULT_BUDDYBORDER;
        }

        SetWindowPos(infoPtr->Self, 0, x,
                     budRect.top - DEFAULT_ADDTOP, width,
                     budRect.bottom - budRect.top + DEFAULT_ADDTOP + DEFAULT_ADDBOT,
                     SWP_NOACTIVATE|SWP_FRAMECHANGED|SWP_NOZORDER);
    } else {
        RECT rect;
        GetWindowRect(infoPtr->Self, &rect);
        MapWindowPoints(HWND_DESKTOP, GetParent(infoPtr->Self), (POINT *)&rect, 2);
        SetWindowPos(infoPtr->Self, 0, rect.left, rect.top, DEFAULT_WIDTH, rect.bottom - rect.top,
                     SWP_NOACTIVATE|SWP_FRAMECHANGED|SWP_NOZORDER);
    }
    return ret;
}

/***********************************************************************
 *           UPDOWN_DoAction
 *
 * This function increments/decrements the CurVal by the
 * 'delta' amount according to the 'action' flag which can be a
 * combination of FLAG_INCR and FLAG_DECR
 * It notifies the parent as required.
 * It handles wraping and non-wraping correctly.
 * It is assumed that delta>0
 */
static void UPDOWN_DoAction (UPDOWN_INFO *infoPtr, int delta, int action)
{
    NM_UPDOWN ni;

    TRACE("%d by %d\n", action, delta);

    /* check if we can do the modification first */
    delta *= (action & FLAG_INCR ? 1 : -1) * (infoPtr->MaxVal < infoPtr->MinVal ? -1 : 1);
    if ( (action & FLAG_INCR) && (action & FLAG_DECR) ) delta = 0;

    TRACE("current %d, delta: %d\n", infoPtr->CurVal, delta);

    /* We must notify parent now to obtain permission */
    ni.iPos = infoPtr->CurVal;
    ni.iDelta = delta;
    ni.hdr.hwndFrom = infoPtr->Self;
    ni.hdr.idFrom   = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
    ni.hdr.code = UDN_DELTAPOS;
    if (!SendMessageW(infoPtr->Notify, WM_NOTIFY, (WPARAM)ni.hdr.idFrom, (LPARAM)&ni)) {
        /* Parent said: OK to adjust */

        /* Now adjust value with (maybe new) delta */
        if (UPDOWN_OffsetVal (infoPtr, ni.iDelta)) {
            TRACE("new %d, delta: %d\n", infoPtr->CurVal, ni.iDelta);

            /* Now take care about our buddy */
            UPDOWN_SetBuddyInt (infoPtr);
        }
    }

    /* Also, notify it. This message is sent in any case. */
    SendMessageW( infoPtr->Notify, (infoPtr->dwStyle & UDS_HORZ) ? WM_HSCROLL : WM_VSCROLL,
		  MAKELONG(SB_THUMBPOSITION, infoPtr->CurVal), (LPARAM)infoPtr->Self);
}

/***********************************************************************
 *           UPDOWN_IsEnabled
 *
 * Returns TRUE if it is enabled as well as its buddy (if any)
 *         FALSE otherwise
 */
static BOOL UPDOWN_IsEnabled (const UPDOWN_INFO *infoPtr)
{
    if (!IsWindowEnabled(infoPtr->Self))
        return FALSE;
    if(infoPtr->Buddy)
        return IsWindowEnabled(infoPtr->Buddy);
    return TRUE;
}

/***********************************************************************
 *           UPDOWN_CancelMode
 *
 * Deletes any timers, releases the mouse and does  redraw if necessary.
 * If the control is not in "capture" mode, it does nothing.
 * If the control was not in cancel mode, it returns FALSE.
 * If the control was in cancel mode, it returns TRUE.
 */
static BOOL UPDOWN_CancelMode (UPDOWN_INFO *infoPtr)
{
    if (!(infoPtr->Flags & FLAG_PRESSED)) return FALSE;

    KillTimer (infoPtr->Self, TIMER_AUTOREPEAT);
    KillTimer (infoPtr->Self, TIMER_ACCEL);
    KillTimer (infoPtr->Self, TIMER_AUTOPRESS);

    if (GetCapture() == infoPtr->Self) {
	NMHDR hdr;
	hdr.hwndFrom = infoPtr->Self;
	hdr.idFrom   = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
	hdr.code = NM_RELEASEDCAPTURE;
	SendMessageW(infoPtr->Notify, WM_NOTIFY, hdr.idFrom, (LPARAM)&hdr);
	ReleaseCapture();
    }

    infoPtr->Flags &= ~FLAG_PRESSED;
    InvalidateRect (infoPtr->Self, NULL, FALSE);

    return TRUE;
}

/***********************************************************************
 *           UPDOWN_HandleMouseEvent
 *
 * Handle a mouse event for the updown.
 * 'pt' is the location of the mouse event in client or
 * windows coordinates.
 */
static void UPDOWN_HandleMouseEvent (UPDOWN_INFO *infoPtr, UINT msg, INT x, INT y)
{
    POINT pt = { x, y };
    RECT rect;
    int temp, arrow;
    TRACKMOUSEEVENT tme;

    TRACE("msg %04x point %s\n", msg, wine_dbgstr_point(&pt));

    switch(msg)
    {
        case WM_LBUTTONDOWN:  /* Initialise mouse tracking */

            /* If the buddy is an edit, will set focus to it */
	    if (UPDOWN_IsBuddyEdit(infoPtr)) SetFocus(infoPtr->Buddy);

            /* Now see which one is the 'active' arrow */
            arrow = UPDOWN_GetArrowFromPoint (infoPtr, &rect, pt);

            /* Update the flags if we are in/out */
            infoPtr->Flags &= ~(FLAG_MOUSEIN | FLAG_ARROW);
            if (arrow)
                infoPtr->Flags |= FLAG_MOUSEIN | arrow;
            else
                if (infoPtr->AccelIndex != -1) infoPtr->AccelIndex = 0;

	    if (infoPtr->Flags & FLAG_ARROW) {

            	/* Update the CurVal if necessary */
            	UPDOWN_GetBuddyInt (infoPtr);