include/wx/fontpicker.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/fontpicker.h
   3 // Purpose:     wxFontPickerCtrl base header
   4 // Author:      Francesco Montorsi
   5 // Modified by:
   6 // Created:     14/4/2006
   7 // Copyright:   (c) Francesco Montorsi
   8 // RCS-ID:      $Id$
   9 // Licence:     wxWindows Licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_FONTPICKER_H_BASE_
  13 #define _WX_FONTPICKER_H_BASE_
  14
  15 #include "wx/defs.h"
  16
  17
  18 #if wxUSE_FONTPICKERCTRL
  19
  20 #include "wx/pickerbase.h"
  21
  22
  23 class WXDLLIMPEXP_FWD_CORE wxFontPickerEvent;
  24
  25 extern WXDLLIMPEXP_DATA_CORE(const char) wxFontPickerWidgetNameStr[];
  26 extern WXDLLIMPEXP_DATA_CORE(const char) wxFontPickerCtrlNameStr[];
  27
  28
  29 // ----------------------------------------------------------------------------
  30 // wxFontPickerWidgetBase: a generic abstract interface which must be
  31 //                         implemented by controls used by wxFontPickerCtrl
  32 // ----------------------------------------------------------------------------
  33
  34 class WXDLLIMPEXP_CORE wxFontPickerWidgetBase
  35 {
  36 public:
  37     wxFontPickerWidgetBase() { m_selectedFont = *wxNORMAL_FONT; }
  38     virtual ~wxFontPickerWidgetBase() {}
  39
  40     wxFont GetSelectedFont() const
  41         { return m_selectedFont; }
  42     virtual void SetSelectedFont(const wxFont &f)
  43         { m_selectedFont = f; UpdateFont(); }
  44
  45 protected:
  46
  47     virtual void UpdateFont() = 0;
  48
  49     // the current font (may be invalid if none)
  50     // NOTE: don't call this m_font as wxWindow::m_font already exists
  51     wxFont m_selectedFont;
  52 };
  53
  54 // Styles which must be supported by all controls implementing wxFontPickerWidgetBase
  55 // NB: these styles must be defined to carefully-chosen values to
  56 //     avoid conflicts with wxButton's styles
  57
  58
  59 // keeps the label of the button updated with the fontface name + font size
  60 // E.g. choosing "Times New Roman bold, italic with size 10" from the fontdialog,
  61 //      updates the wxFontButtonGeneric's label (overwriting any previous label)
  62 //      with the "Times New Roman, 10" text (only fontface + fontsize is displayed
  63 //      to avoid extralong labels).
  64 #define wxFNTP_FONTDESC_AS_LABEL      0x0008
  65
  66 // uses the currently selected font to draw the label of the button
  67 #define wxFNTP_USEFONT_FOR_LABEL      0x0010
  68
  69 #define wxFONTBTN_DEFAULT_STYLE \
  70     (wxFNTP_FONTDESC_AS_LABEL | wxFNTP_USEFONT_FOR_LABEL)
  71
  72 // native version currently only exists in wxGTK2
  73 #if defined(__WXGTK20__) && !defined(__WXUNIVERSAL__)
  74     #include "wx/gtk/fontpicker.h"
  75     #define wxFontPickerWidget      wxFontButton
  76 #else
  77     #include "wx/generic/fontpickerg.h"
  78     #define wxFontPickerWidget      wxGenericFontButton
  79 #endif
  80
  81
  82 // ----------------------------------------------------------------------------
  83 // wxFontPickerCtrl specific flags
  84 // ----------------------------------------------------------------------------
  85
  86 #define wxFNTP_USE_TEXTCTRL       (wxPB_USE_TEXTCTRL)
  87 #define wxFNTP_DEFAULT_STYLE      (wxFNTP_FONTDESC_AS_LABEL|wxFNTP_USEFONT_FOR_LABEL)
  88
  89 // not a style but rather the default value of the maximum pointsize allowed
  90 #define wxFNTP_MAXPOINT_SIZE      100
  91
  92
  93 // ----------------------------------------------------------------------------
  94 // wxFontPickerCtrl: platform-independent class which embeds the
  95 // platform-dependent wxFontPickerWidget andm if wxFNTP_USE_TEXTCTRL style is
  96 // used, a textctrl next to it.
  97 // ----------------------------------------------------------------------------
  98
  99 class WXDLLIMPEXP_CORE wxFontPickerCtrl : public wxPickerBase
 100 {
 101 public:
 102     wxFontPickerCtrl()
 103         : m_nMaxPointSize(wxFNTP_MAXPOINT_SIZE)
 104     {
 105     }
 106
 107     virtual ~wxFontPickerCtrl() {}
 108
 109
 110     wxFontPickerCtrl(wxWindow *parent,
 111                      wxWindowID id,
 112                      const wxFont& initial = wxNullFont,
 113                      const wxPoint& pos = wxDefaultPosition,
 114                      const wxSize& size = wxDefaultSize,
 115                      long style = wxFNTP_DEFAULT_STYLE,
 116                      const wxValidator& validator = wxDefaultValidator,
 117                      const wxString& name = wxFontPickerCtrlNameStr)
 118         : m_nMaxPointSize(wxFNTP_MAXPOINT_SIZE)
 119     {
 120         Create(parent, id, initial, pos, size, style, validator, name);
 121     }
 122
 123     bool Create(wxWindow *parent,
 124                 wxWindowID id,
 125                 const wxFont& initial = wxNullFont,
 126                 const wxPoint& pos = wxDefaultPosition,
 127                 const wxSize& size = wxDefaultSize,
 128                 long style = wxFNTP_DEFAULT_STYLE,
 129                 const wxValidator& validator = wxDefaultValidator,
 130                 const wxString& name = wxFontPickerCtrlNameStr);
 131
 132
 133 public:         // public API
 134
 135     // get the font chosen
 136     wxFont GetSelectedFont() const
 137         { return ((wxFontPickerWidget *)m_picker)->GetSelectedFont(); }
 138
 139     // sets currently displayed font
 140     void SetSelectedFont(const wxFont& f);
 141
 142     // set/get the max pointsize
 143     void SetMaxPointSize(unsigned int max)
 144         { m_nMaxPointSize=max; }
 145     unsigned int GetMaxPointSize() const
 146         { return m_nMaxPointSize; }
 147
 148 public:        // internal functions
 149
 150     void UpdatePickerFromTextCtrl();
 151     void UpdateTextCtrlFromPicker();
 152
 153     // event handler for our picker
 154     void OnFontChange(wxFontPickerEvent &);
 155
 156     // used to convert wxString <-> wxFont
 157     virtual wxString Font2String(const wxFont &font);
 158     virtual wxFont String2Font(const wxString &font);
 159
 160 protected:
 161
 162     // extracts the style for our picker from wxFontPickerCtrl's style
 163     long GetPickerStyle(long style) const
 164         { return (style & (wxFNTP_FONTDESC_AS_LABEL|wxFNTP_USEFONT_FOR_LABEL)); }
 165
 166     // the maximum pointsize allowed to the user
 167     unsigned int m_nMaxPointSize;
 168
 169 private:
 170     DECLARE_DYNAMIC_CLASS(wxFontPickerCtrl)
 171 };
 172
 173
 174 // ----------------------------------------------------------------------------
 175 // wxFontPickerEvent: used by wxFontPickerCtrl only
 176 // ----------------------------------------------------------------------------
 177
 178 wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_CORE, wxEVT_FONTPICKER_CHANGED, wxFontPickerEvent );
 179
 180 class WXDLLIMPEXP_CORE wxFontPickerEvent : public wxCommandEvent
 181 {
 182 public:
 183     wxFontPickerEvent() {}
 184     wxFontPickerEvent(wxObject *generator, int id, const wxFont &f)
 185         : wxCommandEvent(wxEVT_FONTPICKER_CHANGED, id),
 186           m_font(f)
 187     {
 188         SetEventObject(generator);
 189     }
 190
 191     wxFont GetFont() const { return m_font; }
 192     void SetFont(const wxFont &c) { m_font = c; }
 193
 194     // default copy ctor, assignment operator and dtor are ok
 195     virtual wxEvent *Clone() const { return new wxFontPickerEvent(*this); }
 196
 197 private:
 198     wxFont m_font;
 199
 200     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxFontPickerEvent)
 201 };
 202
 203 // ----------------------------------------------------------------------------
 204 // event types and macros
 205 // ----------------------------------------------------------------------------
 206
 207 typedef void (wxEvtHandler::*wxFontPickerEventFunction)(wxFontPickerEvent&);
 208
 209 #define wxFontPickerEventHandler(func) \
 210     wxEVENT_HANDLER_CAST(wxFontPickerEventFunction, func)
 211
 212 #define EVT_FONTPICKER_CHANGED(id, fn) \
 213     wx__DECLARE_EVT1(wxEVT_FONTPICKER_CHANGED, id, wxFontPickerEventHandler(fn))
 214
 215 // old wxEVT_COMMAND_* constants
 216 #define wxEVT_COMMAND_FONTPICKER_CHANGED   wxEVT_FONTPICKER_CHANGED
 217
 218
 219 #endif // wxUSE_FONTPICKERCTRL
 220
 221 #endif
 222     // _WX_FONTPICKER_H_BASE_