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