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_bIgnoreNextTextCtrlUpdate(false),
 104         m_nMaxPointSize(wxFNTP_MAXPOINT_SIZE)
 105     {
 106     }
 107
 108     virtual ~wxFontPickerCtrl() {}
 109
 110
 111     wxFontPickerCtrl(wxWindow *parent,
 112                      wxWindowID id,
 113                      const wxFont& initial = wxNullFont,
 114                      const wxPoint& pos = wxDefaultPosition,
 115                      const wxSize& size = wxDefaultSize,
 116                      long style = wxFNTP_DEFAULT_STYLE,
 117                      const wxValidator& validator = wxDefaultValidator,
 118                      const wxString& name = wxFontPickerCtrlNameStr)
 119         : m_bIgnoreNextTextCtrlUpdate(false),
 120           m_nMaxPointSize(wxFNTP_MAXPOINT_SIZE)
 121     {
 122         Create(parent, id, initial, pos, size, style, validator, name);
 123     }
 124
 125     bool Create(wxWindow *parent,
 126                 wxWindowID id,
 127                 const wxFont& initial = wxNullFont,
 128                 const wxPoint& pos = wxDefaultPosition,
 129                 const wxSize& size = wxDefaultSize,
 130                 long style = wxFNTP_DEFAULT_STYLE,
 131                 const wxValidator& validator = wxDefaultValidator,
 132                 const wxString& name = wxFontPickerCtrlNameStr);
 133
 134
 135 public:         // public API
 136
 137     // get the font chosen
 138     wxFont GetSelectedFont() const
 139         { return ((wxFontPickerWidget *)m_picker)->GetSelectedFont(); }
 140
 141     // sets currently displayed font
 142     void SetSelectedFont(const wxFont& f);
 143
 144     // set/get the max pointsize
 145     void SetMaxPointSize(unsigned int max)
 146         { m_nMaxPointSize=max; }
 147     unsigned int GetMaxPointSize() const
 148         { return m_nMaxPointSize; }
 149
 150 public:        // internal functions
 151
 152     void UpdatePickerFromTextCtrl();
 153     void UpdateTextCtrlFromPicker();
 154
 155     // event handler for our picker
 156     void OnFontChange(wxFontPickerEvent &);
 157
 158     // used to convert wxString <-> wxFont
 159     virtual wxString Font2String(const wxFont &font);
 160     virtual wxFont String2Font(const wxString &font);
 161
 162 protected:
 163
 164     // extracts the style for our picker from wxFontPickerCtrl's style
 165     long GetPickerStyle(long style) const
 166         { return (style & (wxFNTP_FONTDESC_AS_LABEL|wxFNTP_USEFONT_FOR_LABEL)); }
 167
 168     // true if the next UpdateTextCtrl() call is to ignore
 169     bool m_bIgnoreNextTextCtrlUpdate;
 170
 171     // the maximum pointsize allowed to the user
 172     unsigned int m_nMaxPointSize;
 173
 174 private:
 175     DECLARE_DYNAMIC_CLASS(wxFontPickerCtrl)
 176 };
 177
 178
 179 // ----------------------------------------------------------------------------
 180 // wxFontPickerEvent: used by wxFontPickerCtrl only
 181 // ----------------------------------------------------------------------------
 182
 183 wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_CORE, wxEVT_COMMAND_FONTPICKER_CHANGED, wxFontPickerEvent );
 184
 185 class WXDLLIMPEXP_CORE wxFontPickerEvent : public wxCommandEvent
 186 {
 187 public:
 188     wxFontPickerEvent() {}
 189     wxFontPickerEvent(wxObject *generator, int id, const wxFont &f)
 190         : wxCommandEvent(wxEVT_COMMAND_FONTPICKER_CHANGED, id),
 191           m_font(f)
 192     {
 193         SetEventObject(generator);
 194     }
 195
 196     wxFont GetFont() const { return m_font; }
 197     void SetFont(const wxFont &c) { m_font = c; }
 198
 199     // default copy ctor, assignment operator and dtor are ok
 200     virtual wxEvent *Clone() const { return new wxFontPickerEvent(*this); }
 201
 202 private:
 203     wxFont m_font;
 204
 205     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxFontPickerEvent)
 206 };
 207
 208 // ----------------------------------------------------------------------------
 209 // event types and macros
 210 // ----------------------------------------------------------------------------
 211
 212 typedef void (wxEvtHandler::*wxFontPickerEventFunction)(wxFontPickerEvent&);
 213
 214 #define wxFontPickerEventHandler(func) \
 215     wxEVENT_HANDLER_CAST(wxFontPickerEventFunction, func)
 216
 217 #define EVT_FONTPICKER_CHANGED(id, fn) \
 218     wx__DECLARE_EVT1(wxEVT_COMMAND_FONTPICKER_CHANGED, id, wxFontPickerEventHandler(fn))
 219
 220
 221 #endif // wxUSE_FONTPICKERCTRL
 222
 223 #endif
 224     // _WX_FONTPICKER_H_BASE_