include/wx/generic/calctrl.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/calctrl.h
   3 // Purpose:     generic implementation of date-picker control
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     29.12.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GENERIC_CALCTRL_H
  13 #define _WX_GENERIC_CALCTRL_H
  14
  15 #include "wx/control.h"         // the base class
  16 #include "wx/dcclient.h"        // for wxPaintDC
  17
  18 class WXDLLEXPORT wxComboBox;
  19 class WXDLLEXPORT wxStaticText;
  20 class WXDLLEXPORT wxSpinCtrl;
  21
  22 #define wxCalendarNameStr _T("CalendarCtrl")
  23
  24 // ----------------------------------------------------------------------------
  25 // wxCalendarCtrl: a control allowing the user to pick a date interactively
  26 // ----------------------------------------------------------------------------
  27
  28 class WXDLLIMPEXP_ADV wxCalendarCtrl : public wxControl
  29 {
  30 public:
  31     // construction
  32     wxCalendarCtrl() { Init(); }
  33     wxCalendarCtrl(wxWindow *parent,
  34                    wxWindowID id,
  35                    const wxDateTime& date = wxDefaultDateTime,
  36                    const wxPoint& pos = wxDefaultPosition,
  37                    const wxSize& size = wxDefaultSize,
  38                    long style = wxCAL_SHOW_HOLIDAYS | wxWANTS_CHARS,
  39                    const wxString& name = wxCalendarNameStr);
  40
  41     bool Create(wxWindow *parent,
  42                 wxWindowID id,
  43                 const wxDateTime& date = wxDefaultDateTime,
  44                 const wxPoint& pos = wxDefaultPosition,
  45                 const wxSize& size = wxDefaultSize,
  46                 long style = wxCAL_SHOW_HOLIDAYS | wxWANTS_CHARS,
  47                 const wxString& name = wxCalendarNameStr);
  48
  49     virtual ~wxCalendarCtrl();
  50
  51     virtual bool Destroy();
  52
  53     // set/get the current date
  54     // ------------------------
  55
  56     bool SetDate(const wxDateTime& date); // we need to be able to control if the event should be sent in SetDateAndNotify(...)
  57     const wxDateTime& GetDate() const { return m_date; }
  58
  59     // set/get the range in which selection can occur
  60     // ---------------------------------------------
  61
  62     bool SetLowerDateLimit(const wxDateTime& date = wxDefaultDateTime);
  63     const wxDateTime& GetLowerDateLimit() const { return m_lowdate; }
  64     bool SetUpperDateLimit(const wxDateTime& date = wxDefaultDateTime);
  65     const wxDateTime& GetUpperDateLimit() const { return m_highdate; }
  66
  67     bool SetDateRange(const wxDateTime& lowerdate = wxDefaultDateTime, const wxDateTime& upperdate = wxDefaultDateTime);
  68
  69     // calendar mode
  70     // -------------
  71
  72     // some calendar styles can't be changed after the control creation by
  73     // just using SetWindowStyle() and Refresh() and the functions below
  74     // should be used instead for them
  75
  76     // corresponds to wxCAL_NO_YEAR_CHANGE bit
  77     void EnableYearChange(bool enable = true);
  78
  79     // corresponds to wxCAL_NO_MONTH_CHANGE bit
  80     void EnableMonthChange(bool enable = true);
  81
  82     // corresponds to wxCAL_SHOW_HOLIDAYS bit
  83     void EnableHolidayDisplay(bool display = true);
  84
  85     // customization
  86     // -------------
  87
  88     // header colours are used for painting the weekdays at the top
  89     void SetHeaderColours(const wxColour& colFg, const wxColour& colBg)
  90     {
  91         m_colHeaderFg = colFg;
  92         m_colHeaderBg = colBg;
  93     }
  94
  95     const wxColour& GetHeaderColourFg() const { return m_colHeaderFg; }
  96     const wxColour& GetHeaderColourBg() const { return m_colHeaderBg; }
  97
  98     // highlight colour is used for the currently selected date
  99     void SetHighlightColours(const wxColour& colFg, const wxColour& colBg)
 100     {
 101         m_colHighlightFg = colFg;
 102         m_colHighlightBg = colBg;
 103     }
 104
 105     const wxColour& GetHighlightColourFg() const { return m_colHighlightFg; }
 106     const wxColour& GetHighlightColourBg() const { return m_colHighlightBg; }
 107
 108     // holiday colour is used for the holidays (if style & wxCAL_SHOW_HOLIDAYS)
 109     void SetHolidayColours(const wxColour& colFg, const wxColour& colBg)
 110     {
 111         m_colHolidayFg = colFg;
 112         m_colHolidayBg = colBg;
 113     }
 114
 115     const wxColour& GetHolidayColourFg() const { return m_colHolidayFg; }
 116     const wxColour& GetHolidayColourBg() const { return m_colHolidayBg; }
 117
 118     // an item without custom attributes is drawn with the default colours and
 119     // font and without border, setting custom attributes allows to modify this
 120     //
 121     // the day parameter should be in 1..31 range, for days 29, 30, 31 the
 122     // corresponding attribute is just unused if there is no such day in the
 123     // current month
 124
 125     wxCalendarDateAttr *GetAttr(size_t day) const
 126     {
 127         wxCHECK_MSG( day > 0 && day < 32, NULL, _T("invalid day") );
 128
 129         return m_attrs[day - 1];
 130     }
 131
 132     void SetAttr(size_t day, wxCalendarDateAttr *attr)
 133     {
 134         wxCHECK_RET( day > 0 && day < 32, _T("invalid day") );
 135
 136         delete m_attrs[day - 1];
 137         m_attrs[day - 1] = attr;
 138     }
 139
 140     void SetHoliday(size_t day);
 141
 142     void ResetAttr(size_t day) { SetAttr(day, (wxCalendarDateAttr *)NULL); }
 143
 144     // returns one of wxCAL_HITTEST_XXX constants and fills either date or wd
 145     // with the corresponding value (none for NOWHERE, the date for DAY and wd
 146     // for HEADER)
 147     wxCalendarHitTestResult HitTest(const wxPoint& pos,
 148                                     wxDateTime *date = NULL,
 149                                     wxDateTime::WeekDay *wd = NULL);
 150
 151     // implementation only from now on
 152     // -------------------------------
 153
 154     // forward these functions to all subcontrols
 155     virtual bool Enable(bool enable = true);
 156     virtual bool Show(bool show = true);
 157
 158     virtual wxVisualAttributes GetDefaultAttributes() const
 159         { return GetClassDefaultAttributes(GetWindowVariant()); }
 160
 161     static wxVisualAttributes
 162     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
 163
 164     void OnSysColourChanged(wxSysColourChangedEvent& event);
 165
 166 protected:
 167     // override some base class virtuals
 168     virtual wxSize DoGetBestSize() const;
 169     virtual void DoGetPosition(int *x, int *y) const;
 170     virtual void DoGetSize(int *width, int *height) const;
 171     virtual void DoSetSize(int x, int y, int width, int height, int sizeFlags);
 172     virtual void DoMoveWindow(int x, int y, int width, int height);
 173
 174 private:
 175     // common part of all ctors
 176     void Init();
 177
 178     // startup colours and reinitialization after colour changes in system
 179     void InitColours();
 180
 181     // event handlers
 182     void OnPaint(wxPaintEvent& event);
 183     void OnClick(wxMouseEvent& event);
 184     void OnDClick(wxMouseEvent& event);
 185     void OnChar(wxKeyEvent& event);
 186     void OnMonthChange(wxCommandEvent& event);
 187     void OnYearChange(wxCommandEvent& event);
 188     void OnYearTextChange(wxCommandEvent& event);
 189
 190     // (re)calc m_widthCol and m_heightRow
 191     void RecalcGeometry();
 192
 193     // set the date and send the notification
 194     void SetDateAndNotify(const wxDateTime& date);
 195
 196     // get the week (row, in range 1..6) for the given date
 197     size_t GetWeek(const wxDateTime& date) const;
 198
 199     // get the date from which we start drawing days
 200     wxDateTime GetStartDate() const;
 201
 202     // is this date shown?
 203     bool IsDateShown(const wxDateTime& date) const;
 204
 205     // is this date in the given range?
 206     bool IsDateInRange(const wxDateTime& date) const;
 207
 208     // range helpers
 209     bool ChangeYear(wxDateTime* target) const;
 210     bool ChangeMonth(wxDateTime* target) const;
 211
 212     // redraw the given date
 213     void RefreshDate(const wxDateTime& date);
 214
 215     // change the date inside the same month/year
 216     void ChangeDay(const wxDateTime& date);
 217
 218     // set the attributes for the holidays if needed
 219     void SetHolidayAttrs();
 220
 221     // reset all holidays
 222     void ResetHolidayAttrs();
 223
 224     // generate the given calendar event(s)
 225     void GenerateEvent(wxEventType type)
 226     {
 227         wxCalendarEvent event(this, type);
 228         (void)GetEventHandler()->ProcessEvent(event);
 229     }
 230
 231     void GenerateEvents(wxEventType type1, wxEventType type2)
 232     {
 233         GenerateEvent(type1);
 234         GenerateEvent(type2);
 235     }
 236
 237     // do we allow changing the month/year?
 238     bool AllowMonthChange() const
 239     {
 240         return (GetWindowStyle() & wxCAL_NO_MONTH_CHANGE)
 241                 != wxCAL_NO_MONTH_CHANGE;
 242     }
 243     bool AllowYearChange() const
 244     {
 245         return !(GetWindowStyle() & wxCAL_NO_YEAR_CHANGE);
 246     }
 247
 248     // show the correct controls
 249     void ShowCurrentControls();
 250
 251     // create the month combo and year spin controls
 252     void CreateMonthComboBox();
 253     void CreateYearSpinCtrl();
 254
 255 public:
 256     // get the currently shown control for month/year
 257     wxControl *GetMonthControl() const;
 258     wxControl *GetYearControl() const;
 259
 260 private:
 261     // OnPaint helper-methods
 262
 263     // Highlight the [fromdate : todate] range using pen and brush
 264     void HighlightRange(wxPaintDC* dc, const wxDateTime& fromdate, const wxDateTime& todate, const wxPen* pen, const wxBrush* brush);
 265
 266     // Get the "coordinates" for the date relative to the month currently displayed.
 267     // using (day, week): upper left coord is (1, 1), lower right coord is (7, 6)
 268     // if the date isn't visible (-1, -1) is put in (day, week) and false is returned
 269     bool GetDateCoord(const wxDateTime& date, int *day, int *week) const;
 270
 271     // Set the flag for SetDate(): otherwise it would overwrite the year
 272     // typed in by the user
 273     void SetUserChangedYear() { m_userChangedYear = true; }
 274
 275     // the subcontrols
 276     wxStaticText *m_staticMonth;
 277     wxComboBox *m_comboMonth;
 278
 279     wxStaticText *m_staticYear;
 280     wxSpinCtrl *m_spinYear;
 281
 282     // the current selection
 283     wxDateTime m_date;
 284
 285     // the date-range
 286     wxDateTime m_lowdate;
 287     wxDateTime m_highdate;
 288
 289     // default attributes
 290     wxColour m_colHighlightFg,
 291              m_colHighlightBg,
 292              m_colHolidayFg,
 293              m_colHolidayBg,
 294              m_colHeaderFg,
 295              m_colHeaderBg,
 296              m_colBackground,
 297              m_colSorrounding;
 298
 299     // the attributes for each of the month days
 300     wxCalendarDateAttr *m_attrs[31];
 301
 302     // the width and height of one column/row in the calendar
 303     wxCoord m_widthCol,
 304             m_heightRow,
 305             m_rowOffset;
 306
 307     wxRect m_leftArrowRect,
 308            m_rightArrowRect;
 309
 310     // the week day names
 311     wxString m_weekdays[7];
 312
 313     // true if SetDate() is being called as the result of changing the year in
 314     // the year control
 315     bool m_userChangedYear;
 316
 317     DECLARE_DYNAMIC_CLASS(wxCalendarCtrl)
 318     DECLARE_EVENT_TABLE()
 319     DECLARE_NO_COPY_CLASS(wxCalendarCtrl)
 320 };
 321
 322 #endif // _WX_GENERIC_CALCTRL_H