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DatePicker Class Reference

Collaboration diagram for DatePicker:

Collaboration graph
List of all members.

Public Member Functions

LRESULT command (WPARAM wParam, LPARAM lParam)
 DatePicker (HWND _hwnd, CREATESTRUCT &cs)
LRESULT destroy ()
LRESULT enable (bool)
LRESULT getSystemTime (SYSTEMTIME *sysTime)
LRESULT keyDown (DWORD vkcode, LPARAM lParam)
LRESULT killFocus (HWND lostFocus)
LRESULT leftButtonDown (WORD key, int x, int y)
LRESULT notify (int id, const NMHDR &nmhdr)
bool notifyDateChanged ()
LRESULT paint (HDC hdc)
void redraw (HDC hdc)
LRESULT resize (WORD flags, int width, int height)
bool sendNotify (UINT code)
LRESULT setFocus (HWND lostFocus)
LRESULT setSystemTime (DWORD flag, SYSTEMTIME *sysTime)
 ~DatePicker ()

Private Member Functions

void decrementField ()
int getFieldWidth (DatePickerField field, HDC hdc)
void incrementField ()

Private Attributes

RECT clientRect
astro::Date date
RECT fieldRects [NumFields]
bool firstDigit
bool haveFocus
HFONT hFont
HWND hwnd
HWND parent
DatePickerField selectedField
DWORD style
char textBuffer [64]

Constructor & Destructor Documentation

DatePicker::DatePicker (  HWND  _hwnd,
CREATESTRUCT &  cs
) 
 

Definition at line 101 of file windatepicker.cpp.

References clientRect, hFont, textBuffer, and YearField.

00101                                                    :
00102     hwnd(_hwnd),
00103     parent(cs.hwndParent),
00104     date(1970, 10, 25),
00105     selectedField(YearField),
00106     haveFocus(false),
00107     firstDigit(true)
00108 {
00109     textBuffer[0] = '\0';
00110 
00111     hFont = reinterpret_cast<HFONT>(GetStockObject(DEFAULT_GUI_FONT));
00112 
00113     clientRect.left = 0;
00114     clientRect.right = 0;
00115     clientRect.top = 0;
00116     clientRect.bottom = 0;
00117 }

DatePicker::~DatePicker (   ) 
 

Definition at line 120 of file windatepicker.cpp.

00121 {
00122 }

Member Function Documentation

LRESULT DatePicker::command (  WPARAM  wParam,
LPARAM  lParam
) 
 

Definition at line 438 of file windatepicker.cpp.

Referenced by DatePickerProc().

00439 {
00440     return 0;
00441 }

void DatePicker::decrementField (   )  [private]
 

Definition at line 534 of file windatepicker.cpp.

References clampToValidDate(), date, astro::Date::day, DayField, daysInMonth(), astro::Date::month, MonthField, selectedField, astro::Date::year, and YearField.

Referenced by keyDown().

00535 {
00536     switch (selectedField)
00537     {
00538     case YearField:
00539         date.year--;
00540         clampToValidDate(date);
00541         break;
00542     case MonthField:
00543         date.month--;
00544         if (date.month < 1)
00545             date.month = 12;
00546         clampToValidDate(date);
00547         break;
00548     case DayField:
00549         date.day--;
00550         if (date.day < 1)
00551             date.day = daysInMonth(date.month, date.year);
00552         // Skip 10 days deleted in Gregorian calendar reform
00553         if (date.year == 1582 && date.month == 10 && date.day == 14)
00554             date.day = 4;
00555         break;
00556     }
00557 }

LRESULT DatePicker::destroy (   ) 
 

Definition at line 561 of file windatepicker.cpp.

Referenced by DatePickerProc().

00562 {
00563     return 0;
00564 }

LRESULT DatePicker::enable (  bool   ) 
 

Definition at line 419 of file windatepicker.cpp.

References style.

Referenced by DatePickerProc().

00420 {
00421     if (!b)
00422         style &= ~WS_DISABLED;
00423     else
00424         style |= WS_DISABLED;
00425 
00426     return 0;
00427 }

int DatePicker::getFieldWidth (  DatePickerField  field,
HDC  hdc
)  [private]
 

Definition at line 480 of file windatepicker.cpp.

References DayField, MonthField, and YearField.

Referenced by redraw().

00481 {
00482     char* maxWidthText = "\0";
00483 
00484     switch (field)
00485     {
00486     case YearField:
00487         maxWidthText = "-2222 ";
00488         break;
00489 
00490     case MonthField:
00491         maxWidthText = " Oct ";
00492         break;
00493 
00494     case DayField:
00495         maxWidthText = "22 ";
00496         break;
00497     }
00498 
00499     SIZE size;
00500     GetTextExtentPoint32(hdc, maxWidthText, strlen(maxWidthText), &size);
00501 
00502     return size.cx;
00503 }

LRESULT DatePicker::getSystemTime (  SYSTEMTIME *  sysTime  ) 
 

Definition at line 593 of file windatepicker.cpp.

References date, astro::Date::day, astro::Date::month, and astro::Date::year.

Referenced by DatePickerProc().

00594 {
00595     if (sysTime != NULL)
00596     {
00597         sysTime->wYear = date.year;
00598         sysTime->wMonth = date.month;
00599         sysTime->wDay = date.day;
00600     }
00601     
00602     return GDT_VALID;
00603 }

void DatePicker::incrementField (   )  [private]
 

Definition at line 507 of file windatepicker.cpp.

References clampToValidDate(), date, astro::Date::day, DayField, daysInMonth(), astro::Date::month, MonthField, selectedField, astro::Date::year, and YearField.

Referenced by keyDown().

00508 {
00509     switch (selectedField)
00510     {
00511     case YearField:
00512         date.year++;
00513         clampToValidDate(date);
00514         break;
00515     case MonthField:
00516         date.month++;
00517         if (date.month > 12)
00518             date.month = 1;
00519         clampToValidDate(date);
00520         break;
00521     case DayField:
00522         date.day++;
00523         if (date.day > (int) daysInMonth(date.month, date.year))
00524             date.day = 1;
00525         // Skip 10 days deleted in Gregorian calendar reform
00526         if (date.year == 1582 && date.month == 10 && date.day == 5)
00527             date.day = 15;
00528         break;
00529     }
00530 }

LRESULT DatePicker::keyDown (  DWORD  vkcode,
LPARAM  lParam
) 
 

Definition at line 246 of file windatepicker.cpp.

References clampToValidDate(), date, astro::Date::day, DayField, daysInMonth(), decrementField(), firstDigit, haveFocus, hwnd, incrementField(), astro::Date::month, MonthField, notifyDateChanged(), NumFields, selectedField, astro::Date::year, and YearField.

Referenced by DatePickerProc().

00247 {
00248     if (!haveFocus)
00249         return 0;
00250 
00251     if (vkcode >= '0' && vkcode <= '9')
00252     {
00253         unsigned int digit = vkcode - '0';
00254 
00255         if (firstDigit)
00256         {
00257             switch (selectedField)
00258             {
00259             case DayField:
00260                 if (digit != 0)
00261                     date.day = digit;
00262                 break;
00263             case MonthField:
00264                 if (digit != 0)
00265                     date.month = digit;
00266                 break;
00267             case YearField:
00268                 if (digit != 0)
00269                     date.year = digit;
00270                 break;
00271             }
00272             firstDigit = false;
00273         }
00274         else
00275         {
00276             switch (selectedField)
00277             {
00278             case DayField:
00279                 {
00280                     unsigned int day = date.day * 10 + digit;
00281                     if (day >= 10)
00282                         firstDigit = true;
00283                     if (day > daysInMonth(date.month, date.year))
00284                         day = 1;
00285                     date.day = day;
00286                 }
00287                 break;
00288             
00289             case MonthField:
00290                 {
00291                     unsigned int month = date.month * 10 + digit;
00292                     if (month > 1)
00293                         firstDigit = true;
00294                     if (month > 12)
00295                         month = 1;
00296                     date.month = month;
00297                 }
00298                 break;
00299                 
00300             case YearField:
00301                 {
00302                     unsigned int year = date.year * 10 + digit;
00303                     if (year >= 1000)
00304                         firstDigit = true;
00305                     if (year <= 9999)
00306                         date.year = year;
00307                 }
00308                 break;
00309             }
00310         }
00311         clampToValidDate(date);
00312         notifyDateChanged();
00313     }
00314     else if (vkcode == VK_SUBTRACT || vkcode == VK_OEM_MINUS)
00315     {
00316         if (selectedField == YearField)
00317         {
00318             date.year = -date.year;
00319             clampToValidDate(date);
00320             notifyDateChanged();
00321         }
00322     }
00323     else
00324     {
00325         firstDigit = true;
00326 
00327         switch (vkcode)
00328         {
00329         case VK_LEFT:
00330             if ((int) selectedField == 0)
00331                 selectedField = DatePickerField((int) NumFields - 1);
00332             else 
00333                 selectedField = DatePickerField((int) selectedField - 1);
00334             break;
00335 
00336         case VK_RIGHT:
00337             if ((int) selectedField == (int) NumFields - 1)
00338                 selectedField = DatePickerField(0);
00339             else
00340                 selectedField = DatePickerField((int) selectedField + 1);
00341             break;
00342             
00343         case VK_UP:
00344             incrementField();
00345             notifyDateChanged();
00346             break;
00347 
00348         case VK_DOWN:
00349             decrementField();
00350             notifyDateChanged();
00351             break;
00352             
00353         default:
00354             break;
00355         }
00356     }
00357 
00358     InvalidateRect(hwnd, NULL, TRUE);
00359 
00360     return 0;
00361 }

LRESULT DatePicker::killFocus (  HWND  lostFocus  ) 
 

Definition at line 404 of file windatepicker.cpp.

References haveFocus, hwnd, and sendNotify().

Referenced by DatePickerProc().

00405 {
00406     if (haveFocus)
00407     {
00408         sendNotify(NM_KILLFOCUS);
00409         haveFocus = false;
00410     }
00411 
00412     InvalidateRect(hwnd, NULL, TRUE);
00413 
00414     return 0;
00415 }

LRESULT DatePicker::leftButtonDown (  WORD  key,
int  x,
int  y
) 
 

Definition at line 365 of file windatepicker.cpp.

References DayField, fieldRects, hwnd, MonthField, selectedField, and YearField.

Referenced by DatePickerProc().

00366 {
00367     POINT pt;
00368     pt.x = x;
00369     pt.y = y;
00370 
00371     if (PtInRect(&fieldRects[DayField], pt))
00372         selectedField = DayField;
00373     else if (PtInRect(&fieldRects[MonthField], pt))
00374         selectedField = MonthField;
00375     else if (PtInRect(&fieldRects[YearField], pt))
00376         selectedField = YearField;
00377 
00378     InvalidateRect(hwnd, NULL, TRUE);
00379         
00380         ::SetFocus(hwnd); // note that this is the Win32 API function, not the class method
00381 
00382     return 0;
00383 }

LRESULT DatePicker::notify (  int  id,
const NMHDR &  nmhdr
) 
 

Definition at line 431 of file windatepicker.cpp.

Referenced by DatePickerProc().

00432 {
00433     return 0;
00434 }

bool DatePicker::notifyDateChanged (   ) 
 

Definition at line 461 of file windatepicker.cpp.

References date, astro::Date::day, hwnd, astro::Date::month, parent, and astro::Date::year.

Referenced by keyDown().

00462 {
00463     NMDATETIMECHANGE change;
00464 
00465     ZeroMemory(&change, sizeof(change));
00466     change.nmhdr.hwndFrom = hwnd;
00467     change.nmhdr.idFrom   = GetWindowLongPtr(hwnd, GWLP_ID);
00468     change.nmhdr.code     = DTN_DATETIMECHANGE;
00469     change.st.wYear       = date.year;
00470     change.st.wMonth      = date.month;
00471     change.st.wDay        = date.day;
00472 
00473     return SendMessage(parent, WM_NOTIFY,
00474                        change.nmhdr.idFrom,
00475                        reinterpret_cast<LPARAM>(&change)) ? true : false;
00476 }

LRESULT DatePicker::paint (  HDC  hdc  ) 
 

Definition at line 126 of file windatepicker.cpp.

References hwnd, and redraw().

Referenced by DatePickerProc().

00127 {
00128     PAINTSTRUCT ps;
00129 
00130     if (!hdc)
00131     {
00132         hdc = BeginPaint(hwnd, &ps);
00133         redraw(hdc);
00134         EndPaint(hwnd, &ps);
00135     }
00136     else
00137     {
00138         redraw(hdc);
00139     }
00140 
00141     return 0;
00142 }

void DatePicker::redraw (  HDC  hdc  ) 
 

Definition at line 146 of file windatepicker.cpp.

References clientRect, date, astro::Date::day, DayField, fieldRects, getFieldWidth(), haveFocus, hFont, hwnd, astro::Date::month, MonthField, Months, NumFields, selectedField, astro::Date::year, and YearField.

Referenced by paint().

00147 {
00148     RECT rect;
00149     GetClientRect(hwnd, &rect);
00150 
00151     SelectObject(hdc, hFont);
00152     SetTextColor(hdc, RGB(0, 0, 0));
00153     SetBkMode(hdc, TRANSPARENT);
00154 
00155     char dayBuf[32];
00156     char monthBuf[32];
00157     char yearBuf[32];
00158 
00159     sprintf(dayBuf, "%02d", date.day);
00160     sprintf(monthBuf, "%s", Months[date.month - 1]);
00161     sprintf(yearBuf, "%5d", date.year);
00162 
00163     char* fieldText[NumFields];
00164     fieldText[DayField] = dayBuf;
00165     fieldText[MonthField] = monthBuf;
00166     fieldText[YearField] = yearBuf;
00167 
00168     int right = 2;
00169     for (unsigned int i = 0; i < NumFields; i++)
00170     {
00171         SIZE size;
00172         GetTextExtentPoint(hdc, fieldText[i], strlen(fieldText[i]), &size);
00173         int fieldWidth = getFieldWidth(DatePickerField(i), hdc);
00174         fieldRects[i].left = right;
00175         fieldRects[i].right = right + fieldWidth;
00176         fieldRects[i].top = rect.top;
00177         fieldRects[i].bottom = rect.bottom;
00178 
00179         right = fieldRects[i].right;
00180 
00181         if (i == selectedField && haveFocus)
00182         {
00183             RECT r = fieldRects[i];
00184             r.top = (clientRect.bottom - size.cy) / 2;
00185             r.bottom = r.top + size.cy + 1;
00186 
00187             HBRUSH hbrush = CreateSolidBrush(GetSysColor(COLOR_HIGHLIGHT));
00188             FillRect(hdc, &r, hbrush);
00189             DeleteObject(hbrush);
00190                         
00191                         SetTextColor(hdc, GetSysColor(COLOR_HIGHLIGHTTEXT));
00192         }
00193                 else
00194                 {
00195                         SetTextColor(hdc, GetSysColor(COLOR_WINDOWTEXT));
00196                 }
00197 
00198         DrawText(hdc, fieldText[i], strlen(fieldText[i]), &fieldRects[i], DT_RIGHT | DT_VCENTER | DT_SINGLELINE);
00199     }
00200 }

LRESULT DatePicker::resize (  WORD  flags,
int  width,
int  height
) 
 

Definition at line 568 of file windatepicker.cpp.

References clientRect, and hwnd.

Referenced by DatePickerProc().

00569 {
00570     clientRect.bottom = height;
00571     clientRect.right = width;
00572 
00573     InvalidateRect(hwnd, NULL, FALSE);
00574 
00575     return 0;
00576 }

bool DatePicker::sendNotify (  UINT  code  ) 
 

Definition at line 445 of file windatepicker.cpp.

References hwnd, and parent.

Referenced by killFocus(), and setFocus().

00446 {
00447     NMHDR nmhdr;
00448 
00449     ZeroMemory(&nmhdr, sizeof(nmhdr));
00450     nmhdr.hwndFrom = hwnd;
00451     nmhdr.idFrom   = GetWindowLongPtr(hwnd, GWLP_ID);
00452     nmhdr.code     = code;
00453 
00454     return SendMessage(parent, WM_NOTIFY,
00455                        nmhdr.idFrom,
00456                        reinterpret_cast<LPARAM>(&nmhdr)) ? true : false;
00457 }

LRESULT DatePicker::setFocus (  HWND  lostFocus  ) 
 

Definition at line 387 of file windatepicker.cpp.

References firstDigit, haveFocus, hwnd, and sendNotify().

Referenced by DatePickerProc().

00388 {
00389     if (!haveFocus)
00390     {
00391         sendNotify(NM_SETFOCUS);
00392         haveFocus = true;
00393     }
00394 
00395     firstDigit = true;
00396 
00397     InvalidateRect(hwnd, NULL, TRUE);
00398     
00399     return 0;
00400 }

LRESULT DatePicker::setSystemTime (  DWORD  flag,
SYSTEMTIME *  sysTime
) 
 

Definition at line 580 of file windatepicker.cpp.

References date, astro::Date::day, hwnd, astro::Date::month, and astro::Date::year.

Referenced by DatePickerProc().

00581 {
00582     date.year = (int16) sysTime->wYear;
00583     date.month = sysTime->wMonth;
00584     date.day = sysTime->wDay;
00585 
00586     InvalidateRect(hwnd, NULL, TRUE);
00587 
00588     return 0;
00589 }

Member Data Documentation

RECT DatePicker::clientRect [private]
 

Definition at line 97 of file windatepicker.cpp.

Referenced by DatePicker(), redraw(), and resize().

astro::Date DatePicker::date [private]
 

Definition at line 87 of file windatepicker.cpp.

Referenced by decrementField(), getSystemTime(), incrementField(), keyDown(), notifyDateChanged(), redraw(), and setSystemTime().

RECT DatePicker::fieldRects[NumFields] [private]
 

Definition at line 96 of file windatepicker.cpp.

Referenced by leftButtonDown(), and redraw().

bool DatePicker::firstDigit [private]
 

Definition at line 94 of file windatepicker.cpp.

Referenced by keyDown(), and setFocus().

bool DatePicker::haveFocus [private]
 

Definition at line 93 of file windatepicker.cpp.

Referenced by keyDown(), killFocus(), redraw(), and setFocus().

HFONT DatePicker::hFont [private]
 

Definition at line 90 of file windatepicker.cpp.

Referenced by DatePicker(), and redraw().

HWND DatePicker::hwnd [private]
 

Definition at line 85 of file windatepicker.cpp.

Referenced by keyDown(), killFocus(), leftButtonDown(), notifyDateChanged(), paint(), redraw(), resize(), sendNotify(), setFocus(), and setSystemTime().

HWND DatePicker::parent [private]
 

Definition at line 86 of file windatepicker.cpp.

Referenced by notifyDateChanged(), and sendNotify().

DatePickerField DatePicker::selectedField [private]
 

Definition at line 88 of file windatepicker.cpp.

Referenced by decrementField(), incrementField(), keyDown(), leftButtonDown(), and redraw().

DWORD DatePicker::style [private]
 

Definition at line 91 of file windatepicker.cpp.

Referenced by enable(), and RegisterDatePicker().

char DatePicker::textBuffer[64] [private]
 

Definition at line 89 of file windatepicker.cpp.

Referenced by DatePicker().

The documentation for this class was generated from the following file:
Generated on Sat Jan 14 22:33:16 2006 for Celestia by  doxygen 1.4.1