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 DEFINE_EVENT_TYPE(wxEVT_COMMAND_FONTPICKER_CHANGED)
  43 IMPLEMENT_DYNAMIC_CLASS(wxFontPickerCtrl, wxPickerBase)
  44 IMPLEMENT_DYNAMIC_CLASS(wxFontPickerEvent, wxCommandEvent)
  45
  46 // ----------------------------------------------------------------------------
  47 // wxFontPickerCtrl
  48 // ----------------------------------------------------------------------------
  49
  50 #define M_PICKER     ((wxFontPickerWidget*)m_picker)
  51
  52 bool wxFontPickerCtrl::Create( wxWindow *parent, wxWindowID id,
  53                         const wxFont &initial,
  54                         const wxPoint &pos, const wxSize &size,
  55                         long style, const wxValidator& validator,
  56                         const wxString &name )
  57 {
  58     // by default, the textctrl is, if present, as big as the picker, for wxFontPickerCtrl
  59     SetTextCtrlProportion(1);
  60
  61     if (!wxPickerBase::CreateBase(parent, id, Font2String(initial),
  62                                   pos, size, style, validator, name))
  63         return false;
  64
  65     // the picker of a wxFontPickerCtrl is a wxFontPickerWidget
  66     m_picker = new wxFontPickerWidget(this, wxID_ANY, initial,
  67                                       wxDefaultPosition, wxDefaultSize,
  68                                       GetPickerStyle(style));
  69     m_picker->Connect(wxEVT_COMMAND_FONTPICKER_CHANGED,
  70             wxFontPickerEventHandler(wxFontPickerCtrl::OnFontChange),
  71             NULL, this);
  72
  73     return true;
  74 }
  75
  76 wxString wxFontPickerCtrl::Font2String(const wxFont &f)
  77 {
  78     wxString ret = f.GetNativeFontInfoUserDesc();
  79 #ifdef __WXMSW__
  80     // on wxMSW the encoding of the font is appended at the end of the string;
  81     // since encoding is not very user-friendly we remove it.
  82     wxFontEncoding enc = f.GetEncoding();
  83     if ( enc != wxFONTENCODING_DEFAULT && enc != wxFONTENCODING_SYSTEM )
  84         ret = ret.BeforeLast(wxT(' '));
  85 #endif
  86     return ret;
  87 }
  88
  89 wxFont wxFontPickerCtrl::String2Font(const wxString &s)
  90 {
  91     wxString str(s);
  92     wxFont ret;
  93     double n;
  94
  95     // put a limit on the maximum point size which the user can enter
  96     // NOTE: we suppose the last word of given string is the pointsize
  97     wxString size = str.AfterLast(wxT(' '));
  98     if (size.ToDouble(&n))
  99     {
 100         if (n < 1)
 101             str = str.Left(str.length() - size.length()) + wxT("1");
 102         else if (n >= m_nMaxPointSize)
 103             str = str.Left(str.length() - size.length()) +
 104                   wxString::Format(wxT("%d"), m_nMaxPointSize);
 105     }
 106
 107     if (!ret.SetNativeFontInfoUserDesc(str))
 108         return wxNullFont;
 109
 110     return ret;
 111 }
 112
 113 void wxFontPickerCtrl::SetSelectedFont(const wxFont &f)
 114 {
 115     M_PICKER->SetSelectedFont(f);
 116     UpdateTextCtrlFromPicker();
 117 }
 118
 119 void wxFontPickerCtrl::UpdatePickerFromTextCtrl()
 120 {
 121     wxASSERT(m_text);
 122
 123     if (m_bIgnoreNextTextCtrlUpdate)
 124     {
 125         // ignore this update
 126         m_bIgnoreNextTextCtrlUpdate = false;
 127         return;
 128     }
 129
 130     // NB: we don't use the wxFont::wxFont(const wxString &) constructor
 131     //     since that constructor expects the native font description
 132     //     string returned by wxFont::GetNativeFontInfoDesc() and not
 133     //     the user-friendly one returned by wxFont::GetNativeFontInfoUserDesc()
 134     wxFont f = String2Font(m_text->GetValue());
 135     if (!f.Ok())
 136         return;     // invalid user input
 137
 138     if (M_PICKER->GetSelectedFont() != f)
 139     {
 140         M_PICKER->SetSelectedFont(f);
 141
 142         // fire an event
 143         wxFontPickerEvent event(this, GetId(), f);
 144         GetEventHandler()->ProcessEvent(event);
 145     }
 146 }
 147
 148 void wxFontPickerCtrl::UpdateTextCtrlFromPicker()
 149 {
 150     if (!m_text)
 151         return;     // no textctrl to update
 152
 153     // NOTE: this SetValue() will generate an unwanted wxEVT_COMMAND_TEXT_UPDATED
 154     //       which will trigger a unneeded UpdateFromTextCtrl(); thus before using
 155     //       SetValue() we set the m_bIgnoreNextTextCtrlUpdate flag...
 156     m_bIgnoreNextTextCtrlUpdate = true;
 157     m_text->SetValue(Font2String(M_PICKER->GetSelectedFont()));
 158 }
 159
 160
 161
 162 // ----------------------------------------------------------------------------
 163 // wxFontPickerCtrl - event handlers
 164 // ----------------------------------------------------------------------------
 165
 166 void wxFontPickerCtrl::OnFontChange(wxFontPickerEvent &ev)
 167 {
 168     UpdateTextCtrlFromPicker();
 169
 170     // the wxFontPickerWidget sent us a colour-change notification.
 171     // forward this event to our parent
 172     wxFontPickerEvent event(this, GetId(), ev.GetFont());
 173     GetEventHandler()->ProcessEvent(event);
 174 }
 175
 176 #endif  // wxUSE_FONTPICKERCTRL