src/common/fontpickercmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/fontpickercmn.cpp
   3 // Purpose:     wxFontPickerCtrl class implementation
   4 // Author:      Francesco Montorsi
   5 // Modified by:
   6 // Created:     15/04/2006
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Francesco Montorsi
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_FONTPICKERCTRL
  28
  29 #include "wx/fontpicker.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/textctrl.h"
  33 #endif
  34
  35 #include "wx/fontenum.h"
  36 #include "wx/tokenzr.h"
  37
  38 // ============================================================================
  39 // implementation
  40 // ============================================================================
  41
  42 const char wxFontPickerCtrlNameStr[] = "fontpicker";
  43 const char wxFontPickerWidgetNameStr[] = "fontpickerwidget";
  44
  45 wxDEFINE_EVENT(wxEVT_FONTPICKER_CHANGED, wxFontPickerEvent);
  46 IMPLEMENT_DYNAMIC_CLASS(wxFontPickerCtrl, wxPickerBase)
  47 IMPLEMENT_DYNAMIC_CLASS(wxFontPickerEvent, wxCommandEvent)
  48
  49 // ----------------------------------------------------------------------------
  50 // wxFontPickerCtrl
  51 // ----------------------------------------------------------------------------
  52
  53 #define M_PICKER     ((wxFontPickerWidget*)m_picker)
  54
  55 bool wxFontPickerCtrl::Create( wxWindow *parent, wxWindowID id,
  56                         const wxFont &initial,
  57                         const wxPoint &pos, const wxSize &size,
  58                         long style, const wxValidator& validator,
  59                         const wxString &name )
  60 {
  61     if (!wxPickerBase::CreateBase(parent, id,
  62                                   Font2String(initial.IsOk() ? initial
  63                                                              : *wxNORMAL_FONT),
  64                                   pos, size, style, validator, name))
  65         return false;
  66
  67     // the picker of a wxFontPickerCtrl is a wxFontPickerWidget
  68     m_picker = new wxFontPickerWidget(this, wxID_ANY, initial,
  69                                       wxDefaultPosition, wxDefaultSize,
  70                                       GetPickerStyle(style));
  71     // complete sizer creation
  72     wxPickerBase::PostCreation();
  73
  74     m_picker->Connect(wxEVT_FONTPICKER_CHANGED,
  75             wxFontPickerEventHandler(wxFontPickerCtrl::OnFontChange),
  76             NULL, this);
  77
  78     return true;
  79 }
  80
  81 wxString wxFontPickerCtrl::Font2String(const wxFont &f)
  82 {
  83     wxString ret = f.GetNativeFontInfoUserDesc();
  84 #ifdef __WXMSW__
  85     // on wxMSW the encoding of the font is appended at the end of the string;
  86     // since encoding is not very user-friendly we remove it.
  87     wxFontEncoding enc = f.GetEncoding();
  88     if ( enc != wxFONTENCODING_DEFAULT && enc != wxFONTENCODING_SYSTEM )
  89         ret = ret.BeforeLast(wxT(' '));
  90 #endif
  91     return ret;
  92 }
  93
  94 wxFont wxFontPickerCtrl::String2Font(const wxString &s)
  95 {
  96     wxString str(s);
  97     wxFont ret;
  98     double n;
  99
 100     // put a limit on the maximum point size which the user can enter
 101     // NOTE: we suppose the last word of given string is the pointsize
 102     wxString size = str.AfterLast(wxT(' '));
 103     if (size.ToDouble(&n))
 104     {
 105         if (n < 1)
 106             str = str.Left(str.length() - size.length()) + wxT("1");
 107         else if (n >= m_nMaxPointSize)
 108             str = str.Left(str.length() - size.length()) +
 109                   wxString::Format(wxT("%d"), m_nMaxPointSize);
 110     }
 111
 112     if (!ret.SetNativeFontInfoUserDesc(str))
 113         return wxNullFont;
 114
 115     return ret;
 116 }
 117
 118 void wxFontPickerCtrl::SetSelectedFont(const wxFont &f)
 119 {
 120     M_PICKER->SetSelectedFont(f);
 121     UpdateTextCtrlFromPicker();
 122 }
 123
 124 void wxFontPickerCtrl::UpdatePickerFromTextCtrl()
 125 {
 126     wxASSERT(m_text);
 127
 128     // NB: we don't use the wxFont::wxFont(const wxString &) constructor
 129     //     since that constructor expects the native font description
 130     //     string returned by wxFont::GetNativeFontInfoDesc() and not
 131     //     the user-friendly one returned by wxFont::GetNativeFontInfoUserDesc()
 132     wxFont f = String2Font(m_text->GetValue());
 133     if (!f.IsOk())
 134         return;     // invalid user input
 135
 136     if (M_PICKER->GetSelectedFont() != f)
 137     {
 138         M_PICKER->SetSelectedFont(f);
 139
 140         // fire an event
 141         wxFontPickerEvent event(this, GetId(), f);
 142         GetEventHandler()->ProcessEvent(event);
 143     }
 144 }
 145
 146 void wxFontPickerCtrl::UpdateTextCtrlFromPicker()
 147 {
 148     if (!m_text)
 149         return;     // no textctrl to update
 150
 151     // Take care to use ChangeValue() here and not SetValue() to avoid
 152     // infinite recursion.
 153     m_text->ChangeValue(Font2String(M_PICKER->GetSelectedFont()));
 154 }
 155
 156
 157
 158 // ----------------------------------------------------------------------------
 159 // wxFontPickerCtrl - event handlers
 160 // ----------------------------------------------------------------------------
 161
 162 void wxFontPickerCtrl::OnFontChange(wxFontPickerEvent &ev)
 163 {
 164     UpdateTextCtrlFromPicker();
 165
 166     // the wxFontPickerWidget sent us a colour-change notification.
 167     // forward this event to our parent
 168     wxFontPickerEvent event(this, GetId(), ev.GetFont());
 169     GetEventHandler()->ProcessEvent(event);
 170 }
 171
 172 #endif  // wxUSE_FONTPICKERCTRL