xref: /reactos/base/shell/explorer/trayclock.cpp (revision 9393fc32)
1 /*
2  * ReactOS Explorer
3  *
4  * Copyright 2006 - 2007 Thomas Weidenmueller <w3seek@reactos.org>
5  * Copyright 2018 Ged Murphy <gedmurphy@reactos.org>
6  *
7  * This library is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * This library is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with this library; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
20  */
21 
22 #include "precomp.h"
23 
24 /*
25  * TrayClockWnd
26  */
27 
28 const struct
29 {
30     BOOL IsTime;
31     DWORD dwFormatFlags;
32     LPCWSTR lpFormat;
33 } ClockWndFormats[] = {
34     { TRUE, 0, NULL },
35     { FALSE, 0, L"dddd" },
36     { FALSE, DATE_SHORTDATE, NULL }
37 };
38 const UINT ClockWndFormatsCount = _ARRAYSIZE(ClockWndFormats);
39 
40 #define CLOCKWND_FORMAT_COUNT ClockWndFormatsCount
41 
42 static const WCHAR szTrayClockWndClass[] = L"TrayClockWClass";
43 
44 class CTrayClockWnd :
45     public CComCoClass<CTrayClockWnd>,
46     public CComObjectRootEx<CComMultiThreadModelNoCS>,
47     public CWindowImpl < CTrayClockWnd, CWindow, CControlWinTraits >,
48     public IOleWindow
49 {
50     HFONT hFont;
51     COLORREF textColor;
52     RECT rcText;
53     SYSTEMTIME LocalTime;
54     CTooltips m_tooltip;
55 
56     union
57     {
58         DWORD dwFlags;
59         struct
60         {
61             DWORD IsTimerEnabled : 1;
62             DWORD IsInitTimerEnabled : 1;
63             DWORD LinesMeasured : 1;
64             DWORD IsHorizontal : 1;
65         };
66     };
67     DWORD LineSpacing;
68     SIZE CurrentSize;
69     WORD VisibleLines;
70     SIZE LineSizes[CLOCKWND_FORMAT_COUNT];
71     WCHAR szLines[CLOCKWND_FORMAT_COUNT][48];
72 
73 public:
74     CTrayClockWnd();
75     virtual ~CTrayClockWnd();
76 
77 private:
78     LRESULT OnThemeChanged();
79     LRESULT OnThemeChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
80 
81     BOOL MeasureLines();
82     WORD GetMinimumSize(IN BOOL Horizontal, IN OUT PSIZE pSize);
83     VOID UpdateWnd();
84     VOID Update();
85     UINT CalculateDueTime();
86     BOOL ResetTime();
87     VOID CalibrateTimer();
88     LRESULT OnDestroy(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
89     LRESULT OnPaint(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
90     VOID SetFont(IN HFONT hNewFont, IN BOOL bRedraw);
91     LRESULT DrawBackground(HDC hdc);
92     LRESULT OnEraseBackground(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
93     LRESULT OnTimer(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
94     LRESULT OnGetMinimumSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
95     LRESULT OnContextMenu(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
96     LRESULT OnSetFont(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
97     LRESULT OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
98     LRESULT OnSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
99     LRESULT OnTaskbarSettingsChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
100     LRESULT OnLButtonDblClick(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
101 
102 public:
103 
104     HRESULT WINAPI GetWindow(HWND* phwnd)
105     {
106         if (!phwnd)
107             return E_INVALIDARG;
108         *phwnd = m_hWnd;
109         return S_OK;
110     }
111 
112     HRESULT WINAPI ContextSensitiveHelp(BOOL fEnterMode)
113     {
114         return E_NOTIMPL;
115     }
116 
117     DECLARE_NOT_AGGREGATABLE(CTrayClockWnd)
118 
119     DECLARE_PROTECT_FINAL_CONSTRUCT()
120     BEGIN_COM_MAP(CTrayClockWnd)
121         COM_INTERFACE_ENTRY_IID(IID_IOleWindow, IOleWindow)
122     END_COM_MAP()
123 
124     DECLARE_WND_CLASS_EX(szTrayClockWndClass, CS_DBLCLKS, COLOR_3DFACE)
125 
126     BEGIN_MSG_MAP(CTrayClockWnd)
127         MESSAGE_HANDLER(WM_CREATE, OnCreate)
128         MESSAGE_HANDLER(WM_DESTROY, OnDestroy)
129         MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBackground)
130         MESSAGE_HANDLER(WM_SIZE, OnSize)
131         MESSAGE_HANDLER(WM_PAINT, OnPaint)
132         MESSAGE_HANDLER(WM_PRINTCLIENT, OnPaint)
133         MESSAGE_HANDLER(WM_THEMECHANGED, OnThemeChanged)
134         MESSAGE_HANDLER(WM_TIMER, OnTimer)
135         MESSAGE_HANDLER(WM_CONTEXTMENU, OnContextMenu)
136         MESSAGE_HANDLER(WM_SETFONT, OnSetFont)
137         MESSAGE_HANDLER(TNWM_GETMINIMUMSIZE, OnGetMinimumSize)
138         MESSAGE_HANDLER(TWM_SETTINGSCHANGED, OnTaskbarSettingsChanged)
139         MESSAGE_HANDLER(WM_LBUTTONDBLCLK, OnLButtonDblClick)
140     END_MSG_MAP()
141 
142     HRESULT Initialize(IN HWND hWndParent);
143 };
144 
145 #define ID_TRAYCLOCK_TIMER  0
146 #define ID_TRAYCLOCK_TIMER_INIT 1
147 
148 #define TRAY_CLOCK_WND_SPACING_X    5
149 #define TRAY_CLOCK_WND_SPACING_Y    0
150 
151 CTrayClockWnd::CTrayClockWnd() :
152         hFont(NULL),
153         dwFlags(0),
154         LineSpacing(0),
155         VisibleLines(0)
156 {
157     ZeroMemory(&textColor, sizeof(textColor));
158     ZeroMemory(&rcText, sizeof(rcText));
159     ZeroMemory(&LocalTime, sizeof(LocalTime));
160     ZeroMemory(&CurrentSize, sizeof(CurrentSize));
161     ZeroMemory(LineSizes, sizeof(LineSizes));
162     ZeroMemory(szLines, sizeof(szLines));
163 }
164 CTrayClockWnd::~CTrayClockWnd() { }
165 
166 LRESULT CTrayClockWnd::OnThemeChanged()
167 {
168     LOGFONTW clockFont;
169     HTHEME clockTheme;
170     HFONT hFont;
171 
172     clockTheme = OpenThemeData(m_hWnd, L"Clock");
173 
174     if (clockTheme)
175     {
176         GetThemeFont(clockTheme,
177             NULL,
178             CLP_TIME,
179             0,
180             TMT_FONT,
181             &clockFont);
182 
183         hFont = CreateFontIndirectW(&clockFont);
184 
185         GetThemeColor(clockTheme,
186             CLP_TIME,
187             0,
188             TMT_TEXTCOLOR,
189             &textColor);
190 
191         if (this->hFont != NULL)
192             DeleteObject(this->hFont);
193 
194         SetFont(hFont, FALSE);
195     }
196     else
197     {
198         /* We don't need to set a font here, our parent will use
199             * WM_SETFONT to set the right one when themes are not enabled. */
200         textColor = RGB(0, 0, 0);
201     }
202 
203     CloseThemeData(clockTheme);
204 
205     return TRUE;
206 }
207 
208 LRESULT CTrayClockWnd::OnThemeChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
209 {
210     return OnThemeChanged();
211 }
212 
213 BOOL CTrayClockWnd::MeasureLines()
214 {
215     HDC hDC;
216     HFONT hPrevFont;
217     UINT c, i;
218     BOOL bRet = TRUE;
219 
220     hDC = GetDC();
221     if (hDC != NULL)
222     {
223         if (hFont)
224             hPrevFont = (HFONT) SelectObject(hDC, hFont);
225 
226         for (i = 0; i < CLOCKWND_FORMAT_COUNT && bRet; i++)
227         {
228             if (szLines[i][0] != L'\0' &&
229                 !GetTextExtentPointW(hDC, szLines[i], wcslen(szLines[i]),
230                                         &LineSizes[i]))
231             {
232                 bRet = FALSE;
233                 break;
234             }
235         }
236 
237         if (hFont)
238             SelectObject(hDC, hPrevFont);
239 
240         ReleaseDC(hDC);
241 
242         if (bRet)
243         {
244             LineSpacing = 0;
245 
246             /* calculate the line spacing */
247             for (i = 0, c = 0; i < CLOCKWND_FORMAT_COUNT; i++)
248             {
249                 if (LineSizes[i].cx > 0)
250                 {
251                     LineSpacing += LineSizes[i].cy;
252                     c++;
253                 }
254             }
255 
256             if (c > 0)
257             {
258                 /* We want a spacing of 1/2 line */
259                 LineSpacing = (LineSpacing / c) / 2;
260             }
261 
262             return TRUE;
263         }
264     }
265 
266     return FALSE;
267 }
268 
269 WORD CTrayClockWnd::GetMinimumSize(IN BOOL Horizontal, IN OUT PSIZE pSize)
270 {
271     WORD iLinesVisible = 0;
272     UINT i;
273     SIZE szMax = { 0, 0 };
274 
275     if (!LinesMeasured)
276         LinesMeasured = MeasureLines();
277 
278     if (!LinesMeasured)
279         return 0;
280 
281     for (i = 0; i < CLOCKWND_FORMAT_COUNT; i++)
282     {
283         if (LineSizes[i].cx != 0)
284         {
285             if (iLinesVisible > 0)
286             {
287                 if (Horizontal)
288                 {
289                     if (szMax.cy + LineSizes[i].cy + (LONG) LineSpacing >
290                         pSize->cy - (2 * TRAY_CLOCK_WND_SPACING_Y))
291                     {
292                         break;
293                     }
294                 }
295                 else
296                 {
297                     if (LineSizes[i].cx > pSize->cx - (2 * TRAY_CLOCK_WND_SPACING_X))
298                         break;
299                 }
300 
301                 /* Add line spacing */
302                 szMax.cy += LineSpacing;
303             }
304 
305             iLinesVisible++;
306 
307             /* Increase maximum rectangle */
308             szMax.cy += LineSizes[i].cy;
309             if (LineSizes[i].cx > szMax.cx)
310                 szMax.cx = LineSizes[i].cx;
311         }
312     }
313 
314     szMax.cx += 2 * TRAY_CLOCK_WND_SPACING_X;
315     szMax.cy += 2 * TRAY_CLOCK_WND_SPACING_Y;
316 
317     *pSize = szMax;
318 
319     return iLinesVisible;
320 }
321 
322 VOID CTrayClockWnd::UpdateWnd()
323 {
324     SIZE szPrevCurrent;
325     UINT BufSize, i;
326     INT iRet;
327     RECT rcClient;
328 
329     ZeroMemory(LineSizes, sizeof(LineSizes));
330 
331     szPrevCurrent = CurrentSize;
332 
333     for (i = 0; i < CLOCKWND_FORMAT_COUNT; i++)
334     {
335         szLines[i][0] = L'\0';
336         BufSize = _countof(szLines[0]);
337 
338         if (ClockWndFormats[i].IsTime)
339         {
340             iRet = GetTimeFormat(LOCALE_USER_DEFAULT,
341                 g_TaskbarSettings.bShowSeconds ? ClockWndFormats[i].dwFormatFlags : TIME_NOSECONDS,
342                 &LocalTime,
343                 ClockWndFormats[i].lpFormat,
344                 szLines[i],
345                 BufSize);
346         }
347         else
348         {
349             iRet = GetDateFormat(LOCALE_USER_DEFAULT,
350                 ClockWndFormats[i].dwFormatFlags,
351                 &LocalTime,
352                 ClockWndFormats[i].lpFormat,
353                 szLines[i],
354                 BufSize);
355         }
356 
357         if (iRet != 0 && i == 0)
358         {
359             /* Set the window text to the time only */
360             SetWindowText(szLines[i]);
361         }
362     }
363 
364     LinesMeasured = MeasureLines();
365 
366     if (LinesMeasured &&
367         GetClientRect(&rcClient))
368     {
369         SIZE szWnd;
370 
371         szWnd.cx = rcClient.right;
372         szWnd.cy = rcClient.bottom;
373 
374         VisibleLines = GetMinimumSize(IsHorizontal, &szWnd);
375         CurrentSize = szWnd;
376     }
377 
378     if (IsWindowVisible())
379     {
380         InvalidateRect(NULL, TRUE);
381 
382         if (szPrevCurrent.cx != CurrentSize.cx ||
383             szPrevCurrent.cy != CurrentSize.cy)
384         {
385             /* Ask the parent to resize */
386             NMHDR nmh = {GetParent(), 0, NTNWM_REALIGN};
387             GetParent().SendMessage(WM_NOTIFY, 0, (LPARAM) &nmh);
388         }
389     }
390 
391     int iDateLength = GetDateFormat(LOCALE_USER_DEFAULT,
392                                           DATE_LONGDATE,
393                                           &LocalTime,
394                                           NULL,
395                                           NULL,
396                                           0);
397     if (iDateLength <= 0)
398     {
399         return;
400     }
401 
402     WCHAR* szDate = new WCHAR[iDateLength];
403     if (GetDateFormat(LOCALE_USER_DEFAULT,
404                       DATE_LONGDATE,
405                       &LocalTime,
406                       NULL,
407                       szDate,
408                       iDateLength) > 0)
409     {
410         m_tooltip.UpdateTipText(m_hWnd,
411                                 reinterpret_cast<UINT_PTR>(m_hWnd),
412                                 szDate);
413     }
414     delete[] szDate;
415 }
416 
417 VOID CTrayClockWnd::Update()
418 {
419     GetLocalTime(&LocalTime);
420     UpdateWnd();
421 }
422 
423 UINT CTrayClockWnd::CalculateDueTime()
424 {
425     UINT uiDueTime;
426 
427     GetLocalTime(&LocalTime);
428     uiDueTime = 1000 - (UINT) LocalTime.wMilliseconds;
429     if (!g_TaskbarSettings.bShowSeconds)
430         uiDueTime += (59 - (UINT) LocalTime.wSecond) * 1000;
431 
432     return uiDueTime;
433 }
434 
435 BOOL CTrayClockWnd::ResetTime()
436 {
437     UINT uiDueTime;
438     BOOL Ret;
439 
440     /* Disable all timers */
441     if (IsTimerEnabled)
442     {
443         KillTimer(ID_TRAYCLOCK_TIMER);
444         IsTimerEnabled = FALSE;
445     }
446     else if (IsInitTimerEnabled)
447     {
448         KillTimer(ID_TRAYCLOCK_TIMER_INIT);
449     }
450 
451     uiDueTime = CalculateDueTime();
452 
453     /* Set the new timer */
454     Ret = SetTimer(ID_TRAYCLOCK_TIMER_INIT, uiDueTime, NULL) != 0;
455     IsInitTimerEnabled = Ret;
456 
457     return Ret;
458 }
459 
460 VOID CTrayClockWnd::CalibrateTimer()
461 {
462     UINT uiDueTime;
463     BOOL Ret;
464     UINT uiWait1, uiWait2;
465 
466     /* Kill the initialization timer */
467     KillTimer(ID_TRAYCLOCK_TIMER_INIT);
468     IsInitTimerEnabled = FALSE;
469 
470     uiDueTime = CalculateDueTime();
471 
472     if (g_TaskbarSettings.bShowSeconds)
473     {
474         uiWait1 = 1000 - 200;
475         uiWait2 = 1000;
476     }
477     else
478     {
479         uiWait1 = 60 * 1000 - 200;
480         uiWait2 = 60 * 1000;
481     }
482 
483     if (uiDueTime > uiWait1)
484     {
485         /* The update of the clock will be up to 200 ms late, but that's
486             acceptable. We're going to setup a timer that fires depending
487             uiWait2. */
488         Ret = SetTimer(ID_TRAYCLOCK_TIMER, uiWait2, NULL) != 0;
489         IsTimerEnabled = Ret;
490     }
491     else
492     {
493         /* Recalibrate the timer and recalculate again when the current
494             minute/second ends. */
495         ResetTime();
496     }
497 
498     /* Update the time */
499     Update();
500 }
501 
502 LRESULT CTrayClockWnd::OnDestroy(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
503 {
504     /* Disable all timers */
505     if (IsTimerEnabled)
506     {
507         KillTimer(ID_TRAYCLOCK_TIMER);
508     }
509     else if (IsInitTimerEnabled)
510     {
511         KillTimer(ID_TRAYCLOCK_TIMER_INIT);
512     }
513 
514     return TRUE;
515 }
516 
517 LRESULT CTrayClockWnd::OnPaint(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
518 {
519     RECT rcClient;
520     HFONT hPrevFont;
521     INT iPrevBkMode;
522     UINT i, line;
523 
524     PAINTSTRUCT ps;
525     HDC hDC = (HDC) wParam;
526 
527     if (wParam == 0)
528     {
529         hDC = BeginPaint(&ps);
530     }
531 
532     if (hDC == NULL)
533         return FALSE;
534 
535     if (LinesMeasured &&
536         GetClientRect(&rcClient))
537     {
538         iPrevBkMode = SetBkMode(hDC, TRANSPARENT);
539 
540         SetTextColor(hDC, textColor);
541 
542         hPrevFont = (HFONT) SelectObject(hDC, hFont);
543 
544         rcClient.top = (rcClient.bottom - CurrentSize.cy) / 2;
545         rcClient.bottom = rcClient.top + CurrentSize.cy;
546 
547         for (i = 0, line = 0;
548                 i < CLOCKWND_FORMAT_COUNT && line < VisibleLines;
549                 i++)
550         {
551             if (LineSizes[i].cx != 0)
552             {
553                 TextOut(hDC,
554                     (rcClient.right - LineSizes[i].cx) / 2,
555                     rcClient.top + TRAY_CLOCK_WND_SPACING_Y,
556                     szLines[i],
557                     wcslen(szLines[i]));
558 
559                 rcClient.top += LineSizes[i].cy + LineSpacing;
560                 line++;
561             }
562         }
563 
564         SelectObject(hDC, hPrevFont);
565 
566         SetBkMode(hDC, iPrevBkMode);
567     }
568 
569     if (wParam == 0)
570     {
571         EndPaint(&ps);
572     }
573 
574     return TRUE;
575 }
576 
577 VOID CTrayClockWnd::SetFont(IN HFONT hNewFont, IN BOOL bRedraw)
578 {
579     hFont = hNewFont;
580     LinesMeasured = MeasureLines();
581     if (bRedraw)
582     {
583         InvalidateRect(NULL, TRUE);
584     }
585 }
586 
587 LRESULT CTrayClockWnd::DrawBackground(HDC hdc)
588 {
589     RECT rect;
590 
591     GetClientRect(&rect);
592     DrawThemeParentBackground(m_hWnd, hdc, &rect);
593 
594     return TRUE;
595 }
596 
597 LRESULT CTrayClockWnd::OnEraseBackground(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
598 {
599     HDC hdc = (HDC) wParam;
600 
601     if (!IsAppThemed())
602     {
603         bHandled = FALSE;
604         return 0;
605     }
606 
607     return DrawBackground(hdc);
608 }
609 
610 LRESULT CTrayClockWnd::OnTimer(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
611 {
612     switch (wParam)
613     {
614     case ID_TRAYCLOCK_TIMER:
615         Update();
616         break;
617 
618     case ID_TRAYCLOCK_TIMER_INIT:
619         CalibrateTimer();
620         break;
621     }
622     return TRUE;
623 }
624 
625 LRESULT CTrayClockWnd::OnGetMinimumSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
626 {
627     IsHorizontal = (BOOL) wParam;
628 
629     return (LRESULT) GetMinimumSize((BOOL) wParam, (PSIZE) lParam) != 0;
630 }
631 
632 LRESULT CTrayClockWnd::OnContextMenu(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
633 {
634     return GetParent().SendMessage(uMsg, wParam, lParam);
635 }
636 
637 LRESULT CTrayClockWnd::OnSetFont(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
638 {
639     SetFont((HFONT) wParam, (BOOL) LOWORD(lParam));
640     return TRUE;
641 }
642 
643 LRESULT CTrayClockWnd::OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
644 {
645     m_tooltip.Create(m_hWnd, WS_POPUP | TTS_NOPREFIX | TTS_ALWAYSTIP);
646 
647     TOOLINFOW ti = { 0 };
648     ti.cbSize = TTTOOLINFOW_V1_SIZE;
649     ti.uFlags = TTF_IDISHWND | TTF_SUBCLASS;
650     ti.hwnd = m_hWnd;
651     ti.uId = reinterpret_cast<UINT_PTR>(m_hWnd);
652     ti.lpszText = NULL;
653     ti.lParam = NULL;
654 
655     m_tooltip.AddTool(&ti);
656 
657     if (!g_TaskbarSettings.sr.HideClock)
658     {
659         ResetTime();
660     }
661 
662     /* Update the time */
663     Update();
664 
665     return TRUE;
666 }
667 
668 LRESULT CTrayClockWnd::OnSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
669 {
670     SIZE szClient;
671 
672     szClient.cx = LOWORD(lParam);
673     szClient.cy = HIWORD(lParam);
674 
675     VisibleLines = GetMinimumSize(IsHorizontal, &szClient);
676     CurrentSize = szClient;
677 
678     InvalidateRect(NULL, TRUE);
679     return TRUE;
680 }
681 
682 LRESULT CTrayClockWnd::OnTaskbarSettingsChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
683 {
684     BOOL bRealign = FALSE;
685 
686     TaskbarSettings* newSettings = (TaskbarSettings*)lParam;
687     if (newSettings->bShowSeconds != g_TaskbarSettings.bShowSeconds)
688     {
689         g_TaskbarSettings.bShowSeconds = newSettings->bShowSeconds;
690         if (!g_TaskbarSettings.sr.HideClock)
691         {
692             bRealign = TRUE;
693 
694             ResetTime();
695         }
696     }
697 
698     if (newSettings->sr.HideClock != g_TaskbarSettings.sr.HideClock)
699     {
700         g_TaskbarSettings.sr.HideClock = newSettings->sr.HideClock;
701         ShowWindow(g_TaskbarSettings.sr.HideClock ? SW_HIDE : SW_SHOW);
702         bRealign = TRUE;
703 
704         if (g_TaskbarSettings.sr.HideClock)
705         {
706             /* Disable all timers */
707             if (IsTimerEnabled)
708             {
709                 KillTimer(ID_TRAYCLOCK_TIMER);
710                 IsTimerEnabled = FALSE;
711             }
712             else if (IsInitTimerEnabled)
713             {
714                 KillTimer(ID_TRAYCLOCK_TIMER_INIT);
715                 IsInitTimerEnabled = FALSE;
716             }
717         }
718         else
719         {
720             ResetTime();
721         }
722     }
723 
724     if (bRealign)
725     {
726         /* Ask the parent to resize */
727         NMHDR nmh = {GetParent(), 0, NTNWM_REALIGN};
728         GetParent().SendMessage(WM_NOTIFY, 0, (LPARAM) &nmh);
729         Update();
730     }
731     return 0;
732 }
733 
734 LRESULT CTrayClockWnd::OnLButtonDblClick(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
735 {
736     if (IsWindowVisible())
737     {
738         //FIXME: use SHRunControlPanel
739         ShellExecuteW(m_hWnd, NULL, L"timedate.cpl", NULL, NULL, SW_NORMAL);
740     }
741     return TRUE;
742 }
743 
744 HRESULT CTrayClockWnd::Initialize(IN HWND hWndParent)
745 {
746     IsHorizontal = TRUE;
747 
748     /* Create the window. The tray window is going to move it to the correct
749         position and resize it as needed. */
750     DWORD dwStyle = WS_CHILD | WS_CLIPSIBLINGS;
751     if (!g_TaskbarSettings.sr.HideClock)
752         dwStyle |= WS_VISIBLE;
753 
754     Create(hWndParent, 0, NULL, dwStyle);
755     if (!m_hWnd)
756         return E_FAIL;
757 
758     SetWindowTheme(m_hWnd, L"TrayNotify", NULL);
759 
760     return S_OK;
761 
762 };
763 
764 HRESULT CTrayClockWnd_CreateInstance(HWND hwndParent, REFIID riid, void **ppv)
765 {
766     return ShellObjectCreatorInit<CTrayClockWnd>(hwndParent, riid, ppv);
767 }
768