trackbar.c

winNT技术操作系统,国外开放的原代码和LIUX一样

    return 0;
}


static LRESULT
TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr, HWND hwndGetFocus)
{
    TRACE("\n");
    infoPtr->bFocussed = FALSE;
    TRACKBAR_InvalidateAll(infoPtr);

    return 0;
}

static LRESULT
TRACKBAR_LButtonDown (TRACKBAR_INFO *infoPtr, DWORD fwKeys, INT x, INT y)
{
    POINT clickPoint;

    clickPoint.x = x;
    clickPoint.y = y;

    SetFocus(infoPtr->hwndSelf);

    if (PtInRect(&infoPtr->rcThumb, clickPoint)) {
        infoPtr->flags |= TB_DRAG_MODE;
        SetCapture (infoPtr->hwndSelf);
	TRACKBAR_UpdateToolTip (infoPtr);
	TRACKBAR_ActivateToolTip (infoPtr, TRUE);
	TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
    } else {
	LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
	if (dir == 0) return 0;
	infoPtr->flags |= (dir < 0) ? TB_AUTO_PAGE_LEFT : TB_AUTO_PAGE_RIGHT;
	TRACKBAR_AutoPage (infoPtr, clickPoint);
        SetCapture (infoPtr->hwndSelf);
        SetTimer(infoPtr->hwndSelf, TB_REFRESH_TIMER, TB_REFRESH_DELAY, 0);
    }

    return 0;
}


static LRESULT
TRACKBAR_LButtonUp (TRACKBAR_INFO *infoPtr, DWORD fwKeys, INT x, INT y)
{
    if (infoPtr->flags & TB_DRAG_MODE) {
        notify_with_scroll (infoPtr, TB_THUMBPOSITION | (infoPtr->lPos<<16));
        notify_with_scroll (infoPtr, TB_ENDTRACK);
        infoPtr->flags &= ~TB_DRAG_MODE;
        ReleaseCapture ();
	notify(infoPtr, NM_RELEASEDCAPTURE);
        TRACKBAR_ActivateToolTip(infoPtr, FALSE);
	TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
    }
    if (infoPtr->flags & TB_AUTO_PAGE) {
	KillTimer (infoPtr->hwndSelf, TB_REFRESH_TIMER);
        infoPtr->flags &= ~TB_AUTO_PAGE;
        notify_with_scroll (infoPtr, TB_ENDTRACK);
        ReleaseCapture ();
	notify(infoPtr, NM_RELEASEDCAPTURE);
    }

    return 0;
}


static LRESULT
TRACKBAR_CaptureChanged (TRACKBAR_INFO *infoPtr)
{
    notify_with_scroll (infoPtr, TB_ENDTRACK);
    return 0;
}


static LRESULT
TRACKBAR_Paint (TRACKBAR_INFO *infoPtr, HDC hdc)
{
    if (hdc) {
	TRACKBAR_Refresh(infoPtr, hdc);
    } else {
	PAINTSTRUCT ps;
    	hdc = BeginPaint (infoPtr->hwndSelf, &ps);
    	TRACKBAR_Refresh (infoPtr, hdc);
    	EndPaint (infoPtr->hwndSelf, &ps);
    }

    return 0;
}


static LRESULT
TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr, HWND hwndLoseFocus)
{
    TRACE("\n");
    infoPtr->bFocussed = TRUE;
    TRACKBAR_InvalidateAll(infoPtr);

    return 0;
}


static LRESULT
TRACKBAR_Size (TRACKBAR_INFO *infoPtr, DWORD fwSizeType, INT nWidth, INT nHeight)
{
    TRACKBAR_InitializeThumb (infoPtr);
    TRACKBAR_AlignBuddies (infoPtr);

    return 0;
}


static LRESULT
TRACKBAR_Timer (TRACKBAR_INFO *infoPtr, INT wTimerID, TIMERPROC *tmrpc)
{
    if (infoPtr->flags & TB_AUTO_PAGE) {
	POINT pt;
	if (GetCursorPos(&pt))
	    if (ScreenToClient(infoPtr->hwndSelf, &pt))
		TRACKBAR_AutoPage(infoPtr, pt);
    }
    return 0;
}


/* update theme after a WM_THEMECHANGED message */
static LRESULT theme_changed (TRACKBAR_INFO* infoPtr)
{
    HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
    CloseThemeData (theme);
    theme = OpenThemeData (infoPtr->hwndSelf, themeClass);
    return 0;
}


static LRESULT
TRACKBAR_MouseMove (TRACKBAR_INFO *infoPtr, DWORD fwKeys, INT x, INT y)
{
    DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
    INT clickPlace = (dwStyle & TBS_VERT) ? y : x;
    LONG dragPos, oldPos = infoPtr->lPos;

    TRACE("(x=%d. y=%d)\n", x, y);

    if (infoPtr->flags & TB_AUTO_PAGE) {
	POINT pt;
	pt.x = x;
	pt.y = y;
	TRACKBAR_AutoPage (infoPtr, pt);
	return TRUE;
    }

    if (!(infoPtr->flags & TB_DRAG_MODE)) 
    {
        if (GetWindowTheme (infoPtr->hwndSelf))
        {
            DWORD oldFlags = infoPtr->flags;
            POINT pt;
            pt.x = x;
            pt.y = y;
            if (PtInRect (&infoPtr->rcThumb, pt))
            {
                TRACKMOUSEEVENT tme;
                tme.cbSize = sizeof( tme );
                tme.dwFlags = TME_LEAVE;
                tme.hwndTrack = infoPtr->hwndSelf;
                TrackMouseEvent( &tme );
                infoPtr->flags |= TB_THUMB_HOT;
            }
            else
            {
                TRACKMOUSEEVENT tme;
                tme.cbSize = sizeof( tme );
                tme.dwFlags = TME_CANCEL;
                tme.hwndTrack = infoPtr->hwndSelf;
                TrackMouseEvent( &tme );
                infoPtr->flags &= ~TB_THUMB_HOT; 
            }
            if (oldFlags != infoPtr->flags) InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
        }
        return TRUE;
    }

    dragPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace,
                                               dwStyle & TBS_VERT);
    if (dragPos == oldPos) return TRUE;

    infoPtr->lPos = dragPos;

    infoPtr->flags |= TB_THUMBPOSCHANGED;
    notify_with_scroll (infoPtr, TB_THUMBTRACK | (infoPtr->lPos<<16));


    TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, dragPos);
    UpdateWindow (infoPtr->hwndSelf);

    return TRUE;
}

static BOOL
TRACKBAR_KeyDown (TRACKBAR_INFO *infoPtr, INT nVirtKey, DWORD lKeyData)
{
    DWORD style = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
    BOOL downIsLeft = style & TBS_DOWNISLEFT;
    BOOL vert = style & TBS_VERT;
    LONG pos = infoPtr->lPos;

    TRACE("%x\n", nVirtKey);

    switch (nVirtKey) {
    case VK_UP:
	if (!vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
        else TRACKBAR_LineUp(infoPtr);
        break;
    case VK_LEFT:
        if (vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
        else TRACKBAR_LineUp(infoPtr);
        break;
    case VK_DOWN:
	if (!vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
        else TRACKBAR_LineDown(infoPtr);
        break;
    case VK_RIGHT:
	if (vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
        else TRACKBAR_LineDown(infoPtr);
        break;
    case VK_NEXT:
	if (!vert && downIsLeft) TRACKBAR_PageUp(infoPtr);
        else TRACKBAR_PageDown(infoPtr);
        break;
    case VK_PRIOR:
	if (!vert && downIsLeft) TRACKBAR_PageDown(infoPtr);
        else TRACKBAR_PageUp(infoPtr);
        break;
    case VK_HOME:
        if (infoPtr->lPos == infoPtr->lRangeMin) return FALSE;
        infoPtr->lPos = infoPtr->lRangeMin;
        notify_with_scroll (infoPtr, TB_TOP);
        break;
    case VK_END:
        if (infoPtr->lPos == infoPtr->lRangeMax) return FALSE;
        infoPtr->lPos = infoPtr->lRangeMax;
        notify_with_scroll (infoPtr, TB_BOTTOM);
        break;
    }

    if (pos != infoPtr->lPos) {
	infoPtr->flags |=TB_THUMBPOSCHANGED;
	TRACKBAR_InvalidateThumbMove (infoPtr, pos, infoPtr->lPos);
    }

    return TRUE;
}


inline static BOOL
TRACKBAR_KeyUp (TRACKBAR_INFO *infoPtr, INT nVirtKey, DWORD lKeyData)
{
    switch (nVirtKey) {
    case VK_LEFT:
    case VK_UP:
    case VK_RIGHT:
    case VK_DOWN:
    case VK_NEXT:
    case VK_PRIOR:
    case VK_HOME:
    case VK_END:
        notify_with_scroll (infoPtr, TB_ENDTRACK);
    }
    return TRUE;
}


static LRESULT WINAPI
TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    TRACKBAR_INFO *infoPtr = (TRACKBAR_INFO *)GetWindowLongPtrW (hwnd, 0);

    TRACE("hwnd=%p msg=%x wparam=%x lparam=%lx\n", hwnd, uMsg, wParam, lParam);

    if (!infoPtr && (uMsg != WM_CREATE))
        return DefWindowProcW (hwnd, uMsg, wParam, lParam);

    switch (uMsg)
    {
    case TBM_CLEARSEL:
        return TRACKBAR_ClearSel (infoPtr, (BOOL)wParam);

    case TBM_CLEARTICS:
        return TRACKBAR_ClearTics (infoPtr, (BOOL)wParam);

    case TBM_GETBUDDY:
        return (LRESULT)(wParam ? infoPtr->hwndBuddyLA : infoPtr->hwndBuddyRB);

    case TBM_GETCHANNELRECT:
        return TRACKBAR_GetChannelRect (infoPtr, (LPRECT)lParam);

    case TBM_GETLINESIZE:
        return infoPtr->lLineSize;

    case TBM_GETNUMTICS:
        return TRACKBAR_GetNumTics (infoPtr);

    case TBM_GETPAGESIZE:
        return infoPtr->lPageSize;

    case TBM_GETPOS:
        return infoPtr->lPos;

    case TBM_GETPTICS:
        return (LRESULT)infoPtr->tics;

    case TBM_GETRANGEMAX:
        return infoPtr->lRangeMax;

    case TBM_GETRANGEMIN:
        return infoPtr->lRangeMin;

    case TBM_GETSELEND:
        return infoPtr->lSelMax;

    case TBM_GETSELSTART:
        return infoPtr->lSelMin;

    case TBM_GETTHUMBLENGTH:
        return infoPtr->uThumbLen;

    case TBM_GETTHUMBRECT:
	return CopyRect((LPRECT)lParam, &infoPtr->rcThumb);

    case TBM_GETTIC:
        return TRACKBAR_GetTic (infoPtr, (INT)wParam);

    case TBM_GETTICPOS:
        return TRACKBAR_GetTicPos (infoPtr, (INT)wParam);

    case TBM_GETTOOLTIPS:
        return (LRESULT)infoPtr->hwndToolTip;

    case TBM_GETUNICODEFORMAT:
        return infoPtr->bUnicode;

    case TBM_SETBUDDY:
        return (LRESULT) TRACKBAR_SetBuddy(infoPtr, (BOOL)wParam, (HWND)lParam);

    case TBM_SETLINESIZE:
        return TRACKBAR_SetLineSize (infoPtr, (LONG)lParam);

    case TBM_SETPAGESIZE:
        return TRACKBAR_SetPageSize (infoPtr, (LONG)lParam);

    case TBM_SETPOS:
        return TRACKBAR_SetPos (infoPtr, (BOOL)wParam, (LONG)lParam);

    case TBM_SETRANGE:
        return TRACKBAR_SetRange (infoPtr, (BOOL)wParam, (LONG)lParam);

    case TBM_SETRANGEMAX:
        return TRACKBAR_SetRangeMax (infoPtr, (BOOL)wParam, (LONG)lParam);

    case TBM_SETRANGEMIN:
        return TRACKBAR_SetRangeMin (infoPtr, (BOOL)wParam, (LONG)lParam);

    case TBM_SETSEL:
        return TRACKBAR_SetSel (infoPtr, (BOOL)wParam, (LONG)lParam);

    case TBM_SETSELEND:
        return TRACKBAR_SetSelEnd (infoPtr, (BOOL)wParam, (LONG)lParam);

    case TBM_SETSELSTART:
        return TRACKBAR_SetSelStart (infoPtr, (BOOL)wParam, (LONG)lParam);

    case TBM_SETTHUMBLENGTH:
        return TRACKBAR_SetThumbLength (infoPtr, (UINT)wParam);

    case TBM_SETTIC:
        return TRACKBAR_SetTic (infoPtr, (LONG)lParam);

    case TBM_SETTICFREQ:
        return TRACKBAR_SetTicFreq (infoPtr, (WORD)wParam);

    case TBM_SETTIPSIDE:
        return TRACKBAR_SetTipSide (infoPtr, (INT)wParam);

    case TBM_SETTOOLTIPS:
        return TRACKBAR_SetToolTips (infoPtr, (HWND)wParam);

    case TBM_SETUNICODEFORMAT:
	return TRACKBAR_SetUnicodeFormat (infoPtr, (BOOL)wParam);


    case WM_CAPTURECHANGED:
        return TRACKBAR_CaptureChanged (infoPtr);

    case WM_CREATE:
        return TRACKBAR_Create (hwnd, (LPCREATESTRUCTW)lParam);

    case WM_DESTROY:
        return TRACKBAR_Destroy (infoPtr);

/*	case WM_ENABLE: */

    case WM_ERASEBKGND:
	return 0;

    case WM_GETDLGCODE:
        return DLGC_WANTARROWS;

    case WM_KEYDOWN:
        return TRACKBAR_KeyDown (infoPtr, (INT)wParam, (DWORD)lParam);

    case WM_KEYUP:
        return TRACKBAR_KeyUp (infoPtr, (INT)wParam, (DWORD)lParam);

    case WM_KILLFOCUS:
        return TRACKBAR_KillFocus (infoPtr, (HWND)wParam);

    case WM_LBUTTONDOWN:
        return TRACKBAR_LButtonDown (infoPtr, wParam, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));

    case WM_LBUTTONUP:
        return TRACKBAR_LButtonUp (infoPtr, wParam, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));

    case WM_MOUSELEAVE:
        infoPtr->flags &= ~TB_THUMB_HOT; 
        InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
        return 0;
    
    case WM_MOUSEMOVE:
        return TRACKBAR_MouseMove (infoPtr, wParam, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));

    case WM_PRINTCLIENT:
    case WM_PAINT:
        return TRACKBAR_Paint (infoPtr, (HDC)wParam);

    case WM_SETFOCUS:
        return TRACKBAR_SetFocus (infoPtr, (HWND)wParam);

    case WM_SIZE:
        return TRACKBAR_Size (infoPtr, wParam, LOWORD(lParam), HIWORD(lParam));

    case WM_THEMECHANGED:
        return theme_changed (infoPtr);

    case WM_TIMER:
	return TRACKBAR_Timer (infoPtr, (INT)wParam, (TIMERPROC *)lParam);

    case WM_WININICHANGE:
        return TRACKBAR_InitializeThumb (infoPtr);

    default:
        if ((uMsg >= WM_USER) && (uMsg < WM_APP))
            ERR("unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
        return DefWindowProcW (hwnd, uMsg, wParam, lParam);
    }
}


void TRACKBAR_Register (void)
{
    WNDCLASSW wndClass;

    ZeroMemory (&wndClass, sizeof(WNDCLASSW));
    wndClass.style         = CS_GLOBALCLASS;
    wndClass.lpfnWndProc   = TRACKBAR_WindowProc;
    wndClass.cbClsExtra    = 0;
    wndClass.cbWndExtra    = sizeof(TRACKBAR_INFO *);
    wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
    wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
    wndClass.lpszClassName = TRACKBAR_CLASSW;

    RegisterClassW (&wndClass);
}


void TRACKBAR_Unregister (void)
{
    UnregisterClassW (TRACKBAR_CLASSW, NULL);
}