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_CORE wxFontPickerEvent;
  24
  25 extern WXDLLEXPORT_DATA(const wxChar) wxFontPickerWidgetNameStr[];
  26 extern WXDLLEXPORT_DATA(const wxChar) 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 #if defined(__WXGTK24__)        // since GTK > 2.4, there is GtkFontButton
  70     #include "wx/gtk/fontpicker.h"
  71     #define wxFontPickerWidget      wxFontButton
  72 #else
  73     #include "wx/generic/fontpickerg.h"
  74     #define wxFontPickerWidget      wxGenericFontButton
  75 #endif
  76
  77
  78 // ----------------------------------------------------------------------------
  79 // wxFontPickerCtrl specific flags
  80 // ----------------------------------------------------------------------------
  81
  82 #define wxFNTP_USE_TEXTCTRL       (wxPB_USE_TEXTCTRL)
  83 #define wxFNTP_DEFAULT_STYLE      (wxFNTP_FONTDESC_AS_LABEL|wxFNTP_USEFONT_FOR_LABEL)
  84
  85 // not a style but rather the default value of the maximum pointsize allowed
  86 #define wxFNTP_MAXPOINT_SIZE      100
  87
  88
  89 // ----------------------------------------------------------------------------
  90 // wxFontPickerCtrl: platform-independent class which embeds the
  91 // platform-dependent wxFontPickerWidget andm if wxFNTP_USE_TEXTCTRL style is
  92 // used, a textctrl next to it.
  93 // ----------------------------------------------------------------------------
  94
  95 class WXDLLIMPEXP_CORE wxFontPickerCtrl : public wxPickerBase
  96 {
  97 public:
  98     wxFontPickerCtrl()
  99         : m_bIgnoreNextTextCtrlUpdate(false),
 100         m_nMaxPointSize(wxFNTP_MAXPOINT_SIZE)
 101     {
 102     }
 103
 104     virtual ~wxFontPickerCtrl() {}
 105
 106
 107     wxFontPickerCtrl(wxWindow *parent,
 108                      wxWindowID id,
 109                      const wxFont& initial = *wxNORMAL_FONT,
 110                      const wxPoint& pos = wxDefaultPosition,
 111                      const wxSize& size = wxDefaultSize,
 112                      long style = wxFNTP_DEFAULT_STYLE,
 113                      const wxValidator& validator = wxDefaultValidator,
 114                      const wxString& name = wxFontPickerCtrlNameStr)
 115         : m_bIgnoreNextTextCtrlUpdate(false),
 116           m_nMaxPointSize(wxFNTP_MAXPOINT_SIZE)
 117     {
 118         Create(parent, id, initial, pos, size, style, validator, name);
 119     }
 120
 121     bool Create(wxWindow *parent,
 122                 wxWindowID id,
 123                 const wxFont& initial = *wxNORMAL_FONT,
 124                 const wxPoint& pos = wxDefaultPosition,
 125                 const wxSize& size = wxDefaultSize,
 126                 long style = wxFNTP_DEFAULT_STYLE,
 127                 const wxValidator& validator = wxDefaultValidator,
 128                 const wxString& name = wxFontPickerCtrlNameStr);
 129
 130
 131 public:         // public API
 132
 133     // get the font chosen
 134     wxFont GetSelectedFont() const
 135         { return ((wxFontPickerWidget *)m_picker)->GetSelectedFont(); }
 136
 137     // sets currently displayed font
 138     void SetSelectedFont(const wxFont& f);
 139
 140     // set/get the max pointsize
 141     void SetMaxPointSize(unsigned int max)
 142         { m_nMaxPointSize=max; }
 143     unsigned int GetMaxPointSize() const
 144         { return m_nMaxPointSize; }
 145
 146 public:        // internal functions
 147
 148     void UpdatePickerFromTextCtrl();
 149     void UpdateTextCtrlFromPicker();
 150
 151     // event handler for our picker
 152     void OnFontChange(wxFontPickerEvent &);
 153
 154     // used to convert wxString <-> wxFont
 155     virtual wxString Font2String(const wxFont &font);
 156     virtual wxFont String2Font(const wxString &font);
 157
 158 protected:
 159
 160     // extracts the style for our picker from wxFontPickerCtrl's style
 161     long GetPickerStyle(long style) const
 162         { return (style & (wxFNTP_FONTDESC_AS_LABEL|wxFNTP_USEFONT_FOR_LABEL)); }
 163
 164     // true if the next UpdateTextCtrl() call is to ignore
 165     bool m_bIgnoreNextTextCtrlUpdate;
 166
 167     // the maximum pointsize allowed to the user
 168     unsigned int m_nMaxPointSize;
 169
 170 private:
 171     DECLARE_DYNAMIC_CLASS(wxFontPickerCtrl)
 172 };
 173
 174
 175 // ----------------------------------------------------------------------------
 176 // wxFontPickerEvent: used by wxFontPickerCtrl only
 177 // ----------------------------------------------------------------------------
 178
 179 BEGIN_DECLARE_EVENT_TYPES()
 180     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_CORE, wxEVT_COMMAND_FONTPICKER_CHANGED, 1102)
 181 END_DECLARE_EVENT_TYPES()
 182
 183 class WXDLLIMPEXP_CORE wxFontPickerEvent : public wxCommandEvent
 184 {
 185 public:
 186     wxFontPickerEvent() {}
 187     wxFontPickerEvent(wxObject *generator, int id, const wxFont &f)
 188         : wxCommandEvent(wxEVT_COMMAND_FONTPICKER_CHANGED, id),
 189           m_font(f)
 190     {
 191         SetEventObject(generator);
 192     }
 193
 194     wxFont GetFont() const { return m_font; }
 195     void SetFont(const wxFont &c) { m_font = c; }
 196
 197 private:
 198     wxFont m_font;
 199
 200     DECLARE_DYNAMIC_CLASS_NO_COPY(wxFontPickerEvent)
 201 };
 202
 203 // ----------------------------------------------------------------------------
 204 // event types and macros
 205 // ----------------------------------------------------------------------------
 206
 207 typedef void (wxEvtHandler::*wxFontPickerEventFunction)(wxFontPickerEvent&);
 208
 209 #define wxFontPickerEventHandler(func) \
 210     (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxFontPickerEventFunction, &func)
 211
 212 #define EVT_FONTPICKER_CHANGED(id, fn) \
 213     wx__DECLARE_EVT1(wxEVT_COMMAND_FONTPICKER_CHANGED, id, wxFontPickerEventHandler(fn))
 214
 215 #ifdef _WX_DEFINE_DATE_EVENTS_
 216     DEFINE_EVENT_TYPE(wxEVT_COMMAND_FONTPICKER_CHANGED)
 217
 218     IMPLEMENT_DYNAMIC_CLASS(wxFontPickerEvent, wxCommandEvent)
 219 #endif
 220
 221
 222
 223 #endif // wxUSE_FONTPICKERCTRL
 224
 225 #endif
 226     // _WX_FONTPICKER_H_BASE_