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 wxChar wxFontPickerCtrlNameStr[] = wxT("fontpicker");
  43 const wxChar wxFontPickerWidgetNameStr[] = wxT("fontpickerwidget");
  44
  45 DEFINE_EVENT_TYPE(wxEVT_COMMAND_FONTPICKER_CHANGED)
  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, 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     // complete sizer creation
  70     wxPickerBase::PostCreation();
  71
  72     m_picker->Connect(wxEVT_COMMAND_FONTPICKER_CHANGED,
  73             wxFontPickerEventHandler(wxFontPickerCtrl::OnFontChange),
  74             NULL, this);
  75
  76     return true;
  77 }
  78
  79 wxString wxFontPickerCtrl::Font2String(const wxFont &f)
  80 {
  81     wxString ret = f.GetNativeFontInfoUserDesc();
  82 #ifdef __WXMSW__
  83     // on wxMSW the encoding of the font is appended at the end of the string;
  84     // since encoding is not very user-friendly we remove it.
  85     wxFontEncoding enc = f.GetEncoding();
  86     if ( enc != wxFONTENCODING_DEFAULT && enc != wxFONTENCODING_SYSTEM )
  87         ret = ret.BeforeLast(wxT(' '));
  88 #endif
  89     return ret;
  90 }
  91
  92 wxFont wxFontPickerCtrl::String2Font(const wxString &s)
  93 {
  94     wxString str(s);
  95     wxFont ret;
  96     double n;
  97
  98     // put a limit on the maximum point size which the user can enter
  99     // NOTE: we suppose the last word of given string is the pointsize
 100     wxString size = str.AfterLast(wxT(' '));
 101     if (size.ToDouble(&n))
 102     {
 103         if (n < 1)
 104             str = str.Left(str.length() - size.length()) + wxT("1");
 105         else if (n >= m_nMaxPointSize)
 106             str = str.Left(str.length() - size.length()) +
 107                   wxString::Format(wxT("%d"), m_nMaxPointSize);
 108     }
 109
 110     if (!ret.SetNativeFontInfoUserDesc(str))
 111         return wxNullFont;
 112
 113     return ret;
 114 }
 115
 116 void wxFontPickerCtrl::SetSelectedFont(const wxFont &f)
 117 {
 118     M_PICKER->SetSelectedFont(f);
 119     UpdateTextCtrlFromPicker();
 120 }
 121
 122 void wxFontPickerCtrl::UpdatePickerFromTextCtrl()
 123 {
 124     wxASSERT(m_text);
 125
 126     if (m_bIgnoreNextTextCtrlUpdate)
 127     {
 128         // ignore this update
 129         m_bIgnoreNextTextCtrlUpdate = false;
 130         return;
 131     }
 132
 133     // NB: we don't use the wxFont::wxFont(const wxString &) constructor
 134     //     since that constructor expects the native font description
 135     //     string returned by wxFont::GetNativeFontInfoDesc() and not
 136     //     the user-friendly one returned by wxFont::GetNativeFontInfoUserDesc()
 137     wxFont f = String2Font(m_text->GetValue());
 138     if (!f.Ok())
 139         return;     // invalid user input
 140
 141     if (M_PICKER->GetSelectedFont() != f)
 142     {
 143         M_PICKER->SetSelectedFont(f);
 144
 145         // fire an event
 146         wxFontPickerEvent event(this, GetId(), f);
 147         GetEventHandler()->ProcessEvent(event);
 148     }
 149 }
 150
 151 void wxFontPickerCtrl::UpdateTextCtrlFromPicker()
 152 {
 153     if (!m_text)
 154         return;     // no textctrl to update
 155
 156     // NOTE: this SetValue() will generate an unwanted wxEVT_COMMAND_TEXT_UPDATED
 157     //       which will trigger a unneeded UpdateFromTextCtrl(); thus before using
 158     //       SetValue() we set the m_bIgnoreNextTextCtrlUpdate flag...
 159     m_bIgnoreNextTextCtrlUpdate = true;
 160     m_text->SetValue(Font2String(M_PICKER->GetSelectedFont()));
 161 }
 162
 163
 164
 165 // ----------------------------------------------------------------------------
 166 // wxFontPickerCtrl - event handlers
 167 // ----------------------------------------------------------------------------
 168
 169 void wxFontPickerCtrl::OnFontChange(wxFontPickerEvent &ev)
 170 {
 171     UpdateTextCtrlFromPicker();
 172
 173     // the wxFontPickerWidget sent us a colour-change notification.
 174     // forward this event to our parent
 175     wxFontPickerEvent event(this, GetId(), ev.GetFont());
 176     GetEventHandler()->ProcessEvent(event);
 177 }
 178
 179 #endif  // wxUSE_FONTPICKERCTRL