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 #include "wx/fontenum.h"
  31 #include "wx/tokenzr.h"
  32
  33 // ============================================================================
  34 // implementation
  35 // ============================================================================
  36
  37 DEFINE_EVENT_TYPE(wxEVT_COMMAND_FONTPICKER_CHANGED)
  38 IMPLEMENT_DYNAMIC_CLASS(wxFontPickerCtrl, wxPickerBase)
  39 IMPLEMENT_DYNAMIC_CLASS(wxFontPickerEvent, wxCommandEvent)
  40
  41 // ----------------------------------------------------------------------------
  42 // wxFontPickerCtrl
  43 // ----------------------------------------------------------------------------
  44
  45 #define M_PICKER     ((wxFontPickerWidget*)m_picker)
  46
  47 bool wxFontPickerCtrl::Create( wxWindow *parent, wxWindowID id,
  48                         const wxFont &initial,
  49                         const wxPoint &pos, const wxSize &size,
  50                         long style, const wxValidator& validator,
  51                         const wxString &name )
  52 {
  53     // by default, the textctrl is, if present, as big as the picker, for wxFontPickerCtrl
  54     SetTextCtrlProportion(1);
  55
  56     if (!wxPickerBase::CreateBase(parent, id, Font2String(initial),
  57                                   pos, size, style, validator, name))
  58         return false;
  59
  60     // the picker of a wxFontPickerCtrl is a wxFontPickerWidget
  61     m_picker = new wxFontPickerWidget(this, wxID_ANY, initial,
  62                                       wxDefaultPosition, wxDefaultSize,
  63                                       GetPickerStyle(style));
  64     m_picker->Connect(wxEVT_COMMAND_FONTPICKER_CHANGED,
  65             wxFontPickerEventHandler(wxFontPickerCtrl::OnFontChange),
  66             NULL, this);
  67
  68     return true;
  69 }
  70
  71 wxString wxFontPickerCtrl::Font2String(const wxFont &f)
  72 {
  73     wxString ret = f.GetNativeFontInfoUserDesc();
  74 #ifdef __WXMSW__
  75     // on wxMSW the encoding of the font is appended at the end of the string;
  76     // since encoding is not very user-friendly we remove it.
  77     wxFontEncoding enc = f.GetEncoding();
  78     if ( enc != wxFONTENCODING_DEFAULT && enc != wxFONTENCODING_SYSTEM )
  79         ret = ret.BeforeLast(wxT(' '));
  80 #endif
  81     return ret;
  82 }
  83
  84 wxFont wxFontPickerCtrl::String2Font(const wxString &s)
  85 {
  86     wxString str(s);
  87     wxFont ret;
  88     double n;
  89
  90     // put a limit on the maximum point size which the user can enter
  91     // NOTE: we suppose the last word of given string is the pointsize
  92     wxString size = str.AfterLast(wxT(' '));
  93     if (size.ToDouble(&n))
  94     {
  95         if (n < 1)
  96             str = str.Left(str.length() - size.length()) + wxT("1");
  97         else if (n >= m_nMaxPointSize)
  98             str = str.Left(str.length() - size.length()) +
  99                   wxString::Format(wxT("%d"), m_nMaxPointSize);
 100     }
 101
 102     if (!ret.SetNativeFontInfoUserDesc(str))
 103         return wxNullFont;
 104
 105     return ret;
 106 }
 107
 108 void wxFontPickerCtrl::SetSelectedFont(const wxFont &f)
 109 {
 110     M_PICKER->SetSelectedFont(f);
 111     UpdateTextCtrlFromPicker();
 112 }
 113
 114 void wxFontPickerCtrl::UpdatePickerFromTextCtrl()
 115 {
 116     wxASSERT(m_text);
 117
 118     if (m_bIgnoreNextTextCtrlUpdate)
 119     {
 120         // ignore this update
 121         m_bIgnoreNextTextCtrlUpdate = false;
 122         return;
 123     }
 124
 125     // NB: we don't use the wxFont::wxFont(const wxString &) constructor
 126     //     since that constructor expects the native font description
 127     //     string returned by wxFont::GetNativeFontInfoDesc() and not
 128     //     the user-friendly one returned by wxFont::GetNativeFontInfoUserDesc()
 129     wxFont f = String2Font(m_text->GetValue());
 130     if (!f.Ok())
 131         return;     // invalid user input
 132
 133     if (M_PICKER->GetSelectedFont() != f)
 134     {
 135         M_PICKER->SetSelectedFont(f);
 136
 137         // fire an event
 138         wxFontPickerEvent event(this, GetId(), f);
 139         GetEventHandler()->ProcessEvent(event);
 140     }
 141 }
 142
 143 void wxFontPickerCtrl::UpdateTextCtrlFromPicker()
 144 {
 145     if (!m_text)
 146         return;     // no textctrl to update
 147
 148     // NOTE: this SetValue() will generate an unwanted wxEVT_COMMAND_TEXT_UPDATED
 149     //       which will trigger a unneeded UpdateFromTextCtrl(); thus before using
 150     //       SetValue() we set the m_bIgnoreNextTextCtrlUpdate flag...
 151     m_bIgnoreNextTextCtrlUpdate = true;
 152     m_text->SetValue(Font2String(M_PICKER->GetSelectedFont()));
 153 }
 154
 155
 156
 157 // ----------------------------------------------------------------------------
 158 // wxFontPickerCtrl - event handlers
 159 // ----------------------------------------------------------------------------
 160
 161 void wxFontPickerCtrl::OnFontChange(wxFontPickerEvent &ev)
 162 {
 163     UpdateTextCtrlFromPicker();
 164
 165     // the wxFontPickerWidget sent us a colour-change notification.
 166     // forward this event to our parent
 167     wxFontPickerEvent event(this, GetId(), ev.GetFont());
 168     GetEventHandler()->ProcessEvent(event);
 169 }
 170
 171 #endif  // wxUSE_FONTPICKERCTRL