///////////////////////////////////////////////////////////////////////////// // Name: font.cpp // Purpose: wxFont demo // Author: Vadim Zeitlin // Modified by: // Created: 30.09.99 // RCS-ID: $Id$ // Copyright: (c) 1999 Vadim Zeitlin // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // For compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif // for all others, include the necessary headers (this file is usually all you // need because it includes almost all standard wxWindows headers #ifndef WX_PRECOMP #include "wx/wx.h" #include "wx/log.h" #endif #include "wx/choicdlg.h" #include "wx/fontdlg.h" #include "wx/fontenum.h" #include "wx/fontmap.h" #include "wx/encconv.h" #include "wx/splitter.h" #include "wx/textfile.h" // ---------------------------------------------------------------------------- // private classes // ---------------------------------------------------------------------------- // Define a new application type, each program should derive a class from wxApp class MyApp : public wxApp { public: // override base class virtuals // ---------------------------- // this one is called on application startup and is a good place for the app // initialization (doing it here and not in the ctor allows to have an error // return: if OnInit() returns false, the application terminates) virtual bool OnInit(); }; // MyCanvas is a canvas on which we show the font sample class MyCanvas: public wxWindow { public: MyCanvas( wxWindow *parent ); virtual ~MyCanvas(); // accessors for the frame const wxFont& GetTextFont() const { return m_font; } const wxColour& GetColour() const { return m_colour; } void SetTextFont(const wxFont& font) { m_font = font; } void SetColour(const wxColour& colour) { m_colour = colour; } // event handlers void OnPaint( wxPaintEvent &event ); private: wxColour m_colour; wxFont m_font; DECLARE_EVENT_TABLE() }; // Define a new frame type: this is going to be our main frame class MyFrame : public wxFrame { public: // ctor(s) MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size); // accessors MyCanvas *GetCanvas() const { return m_canvas; } // event handlers (these functions should _not_ be virtual) void OnQuit(wxCommandEvent& event); void OnAbout(wxCommandEvent& event); void OnIncFont(wxCommandEvent& event) { DoResizeFont(+2); } void OnDecFont(wxCommandEvent& event) { DoResizeFont(-2); } void OnBold(wxCommandEvent& event); void OnItalic(wxCommandEvent& event); void OnUnderline(wxCommandEvent& event); void OnwxPointerFont(wxCommandEvent& event); void OnViewMsg(wxCommandEvent& event); void OnSelectFont(wxCommandEvent& event); void OnEnumerateFamiliesForEncoding(wxCommandEvent& event); void OnEnumerateFamilies(wxCommandEvent& WXUNUSED(event)) { DoEnumerateFamilies(FALSE); } void OnEnumerateFixedFamilies(wxCommandEvent& WXUNUSED(event)) { DoEnumerateFamilies(TRUE); } void OnEnumerateEncodings(wxCommandEvent& event); void OnCheckNativeToFromString(wxCommandEvent& event); protected: bool DoEnumerateFamilies(bool fixedWidthOnly, wxFontEncoding encoding = wxFONTENCODING_SYSTEM, bool silent = FALSE); void DoResizeFont(int diff); void DoChangeFont(const wxFont& font, const wxColour& col = wxNullColour); size_t m_fontSize; // in points wxTextCtrl *m_textctrl; MyCanvas *m_canvas; private: // any class wishing to process wxWindows events must use this macro DECLARE_EVENT_TABLE() }; // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- // IDs for the controls and the menu commands enum { // menu items Font_Quit = 1, Font_About, Font_ViewMsg, Font_IncSize, Font_DecSize, Font_Bold, Font_Italic, Font_Underlined, Font_wxNORMAL_FONT, Font_wxSMALL_FONT, Font_wxITALIC_FONT, Font_wxSWISS_FONT, Font_Choose = 100, Font_EnumFamiliesForEncoding, Font_EnumFamilies, Font_EnumFixedFamilies, Font_EnumEncodings, Font_CheckNativeToFromString, Font_Max }; // ---------------------------------------------------------------------------- // event tables and other macros for wxWindows // ---------------------------------------------------------------------------- // the event tables connect the wxWindows events with the functions (event // handlers) which process them. It can be also done at run-time, but for the // simple menu events like this the static method is much simpler. BEGIN_EVENT_TABLE(MyFrame, wxFrame) EVT_MENU(Font_Quit, MyFrame::OnQuit) EVT_MENU(Font_ViewMsg, MyFrame::OnViewMsg) EVT_MENU(Font_About, MyFrame::OnAbout) EVT_MENU(Font_IncSize, MyFrame::OnIncFont) EVT_MENU(Font_DecSize, MyFrame::OnDecFont) EVT_MENU(Font_Bold, MyFrame::OnBold) EVT_MENU(Font_Italic, MyFrame::OnItalic) EVT_MENU(Font_Underlined, MyFrame::OnUnderline) EVT_MENU(Font_wxNORMAL_FONT, MyFrame::OnwxPointerFont) EVT_MENU(Font_wxSMALL_FONT, MyFrame::OnwxPointerFont) EVT_MENU(Font_wxITALIC_FONT, MyFrame::OnwxPointerFont) EVT_MENU(Font_wxSWISS_FONT, MyFrame::OnwxPointerFont) EVT_MENU(Font_CheckNativeToFromString, MyFrame::OnCheckNativeToFromString) EVT_MENU(Font_Choose, MyFrame::OnSelectFont) EVT_MENU(Font_EnumFamiliesForEncoding, MyFrame::OnEnumerateFamiliesForEncoding) EVT_MENU(Font_EnumFamilies, MyFrame::OnEnumerateFamilies) EVT_MENU(Font_EnumFixedFamilies, MyFrame::OnEnumerateFixedFamilies) EVT_MENU(Font_EnumEncodings, MyFrame::OnEnumerateEncodings) END_EVENT_TABLE() // Create a new application object: this macro will allow wxWindows to create // the application object during program execution (it's better than using a // static object for many reasons) and also declares the accessor function // wxGetApp() which will return the reference of the right type (i.e. MyApp and // not wxApp) IMPLEMENT_APP(MyApp) // ============================================================================ // implementation // ============================================================================ // ---------------------------------------------------------------------------- // the application class // ---------------------------------------------------------------------------- // `Main program' equivalent: the program execution "starts" here bool MyApp::OnInit() { // Create the main application window MyFrame *frame = new MyFrame(wxT("Font wxWindows demo"), wxPoint(50, 50), wxSize(600, 400)); // Show it and tell the application that it's our main window frame->Show(TRUE); SetTopWindow(frame); // success: wxApp::OnRun() will be called which will enter the main message // loop and the application will run. If we returned FALSE here, the // application would exit immediately. return TRUE; } // ---------------------------------------------------------------------------- // main frame // ---------------------------------------------------------------------------- // frame constructor MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) : wxFrame((wxFrame *)NULL, -1, title, pos, size), m_textctrl(NULL) { m_fontSize = 12; // create a menu bar wxMenu *menuFile = new wxMenu; menuFile->Append(Font_ViewMsg, wxT("&View...\tCtrl-V"), wxT("View an email message file")); menuFile->AppendSeparator(); menuFile->Append(Font_About, wxT("&About...\tCtrl-A"), wxT("Show about dialog")); menuFile->AppendSeparator(); menuFile->Append(Font_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program")); wxMenu *menuFont = new wxMenu; menuFont->Append(Font_IncSize, wxT("&Increase font size by 2 points\tCtrl-I")); menuFont->Append(Font_DecSize, wxT("&Decrease font size by 2 points\tCtrl-D")); menuFont->AppendSeparator(); menuFont->Append(Font_Bold, wxT("&Bold\tCtrl-B"), wxT("Toggle bold state"), TRUE); menuFont->Append(Font_Italic, wxT("&Oblique\tCtrl-O"), wxT("Toggle italic state"), TRUE); menuFont->Append(Font_Underlined, wxT("&Underlined\tCtrl-U"), wxT("Toggle underlined state"), TRUE); menuFont->AppendSeparator(); menuFont->Append(Font_CheckNativeToFromString, wxT("Check Native Font Info To/From String")); wxMenu *menuSelect = new wxMenu; menuSelect->Append(Font_Choose, wxT("&Select font...\tCtrl-S"), wxT("Select a standard font")); wxMenu *menuStdFonts = new wxMenu; menuStdFonts->Append(Font_wxNORMAL_FONT, wxT("wxNORMAL_FONT"), wxT("Normal font used by wxWindows")); menuStdFonts->Append(Font_wxSMALL_FONT, wxT("wxSMALL_FONT"), wxT("Small font used by wxWindows")); menuStdFonts->Append(Font_wxITALIC_FONT, wxT("wxITALIC_FONT"), wxT("Italic font used by wxWindows")); menuStdFonts->Append(Font_wxSWISS_FONT, wxT("wxSWISS_FONT"), wxT("Swiss font used by wxWindows")); menuSelect->Append(-2, wxT("Standar&d fonts"), menuStdFonts); menuSelect->AppendSeparator(); menuSelect->Append(Font_EnumFamilies, wxT("Enumerate font &families\tCtrl-F")); menuSelect->Append(Font_EnumFixedFamilies, wxT("Enumerate fi&xed font families\tCtrl-X")); menuSelect->Append(Font_EnumEncodings, wxT("Enumerate &encodings\tCtrl-E")); menuSelect->Append(Font_EnumFamiliesForEncoding, wxT("Find font for en&coding...\tCtrl-C"), wxT("Find font families for given encoding")); // now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar; menuBar->Append(menuFile, wxT("&File")); menuBar->Append(menuFont, wxT("F&ont")); menuBar->Append(menuSelect, wxT("&Select")); // ... and attach this menu bar to the frame SetMenuBar(menuBar); wxSplitterWindow *splitter = new wxSplitterWindow(this); m_textctrl = new wxTextCtrl(splitter, -1, wxT("Paste text here to see how it looks\nlike in the given font"), wxDefaultPosition, wxDefaultSize, wxTE_MULTILINE); m_canvas = new MyCanvas(splitter); splitter->SplitHorizontally(m_textctrl, m_canvas, 100); // create a status bar just for fun (by default with 1 pane only) CreateStatusBar(); SetStatusText(wxT("Welcome to wxWindows font demo!")); } // -------------------------------------------------------- class MyEncodingEnumerator : public wxFontEnumerator { public: MyEncodingEnumerator() { m_n = 0; } const wxString& GetText() const { return m_text; } protected: virtual bool OnFontEncoding(const wxString& facename, const wxString& encoding) { wxString text; text.Printf(wxT("Encoding %d: %s (available in facename '%s')\n"), ++m_n, encoding.c_str(), facename.c_str()); m_text += text; return TRUE; } private: size_t m_n; wxString m_text; }; void MyFrame::OnEnumerateEncodings(wxCommandEvent& WXUNUSED(event)) { MyEncodingEnumerator fontEnumerator; fontEnumerator.EnumerateEncodings(); wxLogMessage(wxT("Enumerating all available encodings:\n%s"), fontEnumerator.GetText().c_str()); } // ------------------------------------------------------------- class MyFontEnumerator : public wxFontEnumerator { public: bool GotAny() const { return !m_facenames.IsEmpty(); } const wxArrayString& GetFacenames() const { return m_facenames; } protected: virtual bool OnFacename(const wxString& facename) { m_facenames.Add(facename); return TRUE; } private: wxArrayString m_facenames; } fontEnumerator; bool MyFrame::DoEnumerateFamilies(bool fixedWidthOnly, wxFontEncoding encoding, bool silent) { MyFontEnumerator fontEnumerator; fontEnumerator.EnumerateFacenames(encoding, fixedWidthOnly); if ( fontEnumerator.GotAny() ) { int nFacenames = fontEnumerator.GetFacenames().GetCount(); if ( !silent ) { wxLogStatus(this, wxT("Found %d %sfonts"), nFacenames, fixedWidthOnly ? wxT("fixed width ") : wxT("")); } wxString facename; if ( silent ) { // choose the first facename = fontEnumerator.GetFacenames().Item(0); } else { // let the user choose wxString *facenames = new wxString[nFacenames]; int n; for ( n = 0; n < nFacenames; n++ ) facenames[n] = fontEnumerator.GetFacenames().Item(n); n = wxGetSingleChoiceIndex(wxT("Choose a facename"), wxT("Font demo"), nFacenames, facenames, this); if ( n != -1 ) facename = facenames[n]; delete [] facenames; } if ( !facename.IsEmpty() ) { wxFont font(12, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL, FALSE, facename, encoding); DoChangeFont(font); } return TRUE; } else if ( !silent ) { wxLogWarning(wxT("No such fonts found.")); } return FALSE; } void MyFrame::OnEnumerateFamiliesForEncoding(wxCommandEvent& WXUNUSED(event)) { static wxFontEncoding encodings[] = { wxFONTENCODING_ISO8859_1, wxFONTENCODING_ISO8859_2, wxFONTENCODING_ISO8859_5, wxFONTENCODING_ISO8859_7, wxFONTENCODING_ISO8859_15, wxFONTENCODING_KOI8, wxFONTENCODING_CP1250, wxFONTENCODING_CP1251, wxFONTENCODING_CP1252, }; static const wxString encodingNames[] = { wxT("Western European (ISO-8859-1)"), wxT("Central European (ISO-8859-2)"), wxT("Cyrillic (ISO-8859-5)"), wxT("Greek (ISO-8859-7)"), wxT("Western European with Euro (ISO-8859-15)"), wxT("KOI8-R"), wxT("Windows Central European (CP 1250)"), wxT("Windows Cyrillic (CP 1251)"), wxT("Windows Western European (CP 1252)"), }; int n = wxGetSingleChoiceIndex(wxT("Choose an encoding"), wxT("Font demo"), WXSIZEOF(encodingNames), encodingNames, this); if ( n != -1 ) { DoEnumerateFamilies(FALSE, encodings[n]); } } void MyFrame::OnCheckNativeToFromString(wxCommandEvent& WXUNUSED(event)) { wxString fontInfo = m_canvas->GetTextFont().GetNativeFontInfoDesc(); if ( fontInfo.IsEmpty() ) { wxLogError(wxT("Native font info string is empty!")); } else { wxFont *font = wxFont::New(fontInfo); if ( fontInfo != font->GetNativeFontInfoDesc() ) wxLogError(wxT("wxNativeFontInfo ToString()/FromString() broken!")); else wxLogMessage(wxT("wxNativeFontInfo works: %s"), fontInfo.c_str()); delete font; } } void MyFrame::DoResizeFont(int diff) { wxFont font = m_canvas->GetTextFont(); font.SetPointSize(font.GetPointSize() + diff); DoChangeFont(font); } void MyFrame::OnBold(wxCommandEvent& event) { wxFont font = m_canvas->GetTextFont(); font.SetWeight(event.IsChecked() ? wxFONTWEIGHT_BOLD : wxFONTWEIGHT_NORMAL); DoChangeFont(font); } void MyFrame::OnItalic(wxCommandEvent& event) { wxFont font = m_canvas->GetTextFont(); font.SetStyle(event.IsChecked() ? wxFONTSTYLE_ITALIC : wxFONTSTYLE_NORMAL); DoChangeFont(font); } void MyFrame::OnUnderline(wxCommandEvent& event) { wxFont font = m_canvas->GetTextFont(); font.SetUnderlined(event.IsChecked()); DoChangeFont(font); } void MyFrame::OnwxPointerFont(wxCommandEvent& event) { wxFont font; switch (event.GetId()) { case Font_wxNORMAL_FONT : font = wxFont(*wxNORMAL_FONT); break; case Font_wxSMALL_FONT : font = wxFont(*wxSMALL_FONT); break; case Font_wxITALIC_FONT : font = wxFont(*wxITALIC_FONT); break; case Font_wxSWISS_FONT : font = wxFont(*wxSWISS_FONT); break; default : font = wxFont(*wxNORMAL_FONT); break; } GetMenuBar()->Check(Font_Bold, FALSE); GetMenuBar()->Check(Font_Italic, FALSE); GetMenuBar()->Check(Font_Underlined, FALSE); DoChangeFont(font); } void MyFrame::DoChangeFont(const wxFont& font, const wxColour& col) { m_canvas->SetTextFont(font); if ( col.Ok() ) m_canvas->SetColour(col); m_canvas->Refresh(); m_textctrl->SetFont(font); if ( col.Ok() ) m_textctrl->SetForegroundColour(col); } void MyFrame::OnSelectFont(wxCommandEvent& WXUNUSED(event)) { wxFontData data; data.SetInitialFont(m_canvas->GetTextFont()); data.SetColour(m_canvas->GetColour()); wxFontDialog dialog(this, data); if ( dialog.ShowModal() == wxID_OK ) { wxFontData retData = dialog.GetFontData(); wxFont font = retData.GetChosenFont(); wxColour colour = retData.GetColour(); DoChangeFont(font, colour); // update the state of the bold/italic/underlined menu items wxMenuBar *mbar = GetMenuBar(); if ( mbar ) { mbar->Check(Font_Bold, font.GetWeight() == wxFONTWEIGHT_BOLD); mbar->Check(Font_Italic, font.GetStyle() == wxFONTSTYLE_ITALIC); mbar->Check(Font_Underlined, font.GetUnderlined()); } } } void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) { // TRUE is to force the frame to close Close(TRUE); } void MyFrame::OnViewMsg(wxCommandEvent& WXUNUSED(event)) { // first, choose the file static wxString s_dir, s_file; wxFileDialog dialog(this, wxT("Open an email message file"), s_dir, s_file); if ( dialog.ShowModal() != wxID_OK ) return; // save for the next time s_dir = dialog.GetDirectory(); s_file = dialog.GetFilename(); wxString filename = dialog.GetPath(); // load it and search for Content-Type header wxTextFile file(filename); if ( !file.Open() ) return; wxString charset; static const wxChar *prefix = wxT("Content-Type: text/plain; charset="); const size_t len = wxStrlen(prefix); size_t n, count = file.GetLineCount(); for ( n = 0; n < count; n++ ) { wxString line = file[n]; if ( !line ) { // if it is an email message, headers are over, no need to parse // all the file break; } if ( line.Left(len) == prefix ) { // found! const wxChar *pc = line.c_str() + len; if ( *pc == wxT('"') ) pc++; while ( *pc && *pc != wxT('"') ) { charset += *pc++; } break; } } if ( !charset ) { wxLogError(wxT("The file '%s' doesn't contain charset information."), filename.c_str()); return; } // ok, now get the corresponding encoding wxFontEncoding fontenc = wxFontMapper::Get()->CharsetToEncoding(charset); if ( fontenc == wxFONTENCODING_SYSTEM ) { wxLogError(wxT("Charset '%s' is unsupported."), charset.c_str()); return; } m_textctrl->LoadFile(filename); if ( fontenc == wxFONTENCODING_UTF8 || !wxFontMapper::Get()->IsEncodingAvailable(fontenc) ) { // try to find some similar encoding: wxFontEncoding encAlt; if ( wxFontMapper::Get()->GetAltForEncoding(fontenc, &encAlt) ) { wxEncodingConverter conv; if (conv.Init(fontenc, encAlt)) { fontenc = encAlt; m_textctrl -> SetValue(conv.Convert(m_textctrl -> GetValue())); } else { wxLogWarning(wxT("Cannot convert from '%s' to '%s'."), wxFontMapper::GetEncodingDescription(fontenc).c_str(), wxFontMapper::GetEncodingDescription(encAlt).c_str()); } } else wxLogWarning(wxT("No fonts for encoding '%s' on this system."), wxFontMapper::GetEncodingDescription(fontenc).c_str()); } // and now create the correct font if ( !DoEnumerateFamilies(FALSE, fontenc, TRUE /* silent */) ) { wxFont font(12, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL, FALSE /* !underlined */, wxEmptyString /* facename */, fontenc); if ( font.Ok() ) { DoChangeFont(font); } else { wxLogWarning(wxT("No fonts for encoding '%s' on this system."), wxFontMapper::GetEncodingDescription(fontenc).c_str()); } } } void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) { wxMessageBox(wxT("wxWindows font demo\n") wxT("(c) 1999 Vadim Zeitlin"), wxT("About Font"), wxOK | wxICON_INFORMATION, this); } // ---------------------------------------------------------------------------- // MyCanvas // ---------------------------------------------------------------------------- BEGIN_EVENT_TABLE(MyCanvas, wxWindow) EVT_PAINT(MyCanvas::OnPaint) END_EVENT_TABLE() MyCanvas::MyCanvas( wxWindow *parent ) : wxWindow( parent, -1 ), m_colour(*wxRED), m_font(*wxNORMAL_FONT) { } MyCanvas::~MyCanvas() { } void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) { wxPaintDC dc(this); PrepareDC(dc); // set background dc.SetBackground(wxBrush(wxT("white"), wxSOLID)); dc.Clear(); // one text line height wxCoord hLine = dc.GetCharHeight(); // the current text origin wxCoord x = 5, y = 5; // output the font name/info wxString fontInfo; fontInfo.Printf(wxT("Font size is %d points, family: %s, encoding: %s"), m_font.GetPointSize(), m_font.GetFamilyString().c_str(), wxFontMapper::Get()-> GetEncodingDescription(m_font.GetEncoding()).c_str()); dc.DrawText(fontInfo, x, y); y += hLine; fontInfo.Printf(wxT("Style: %s, weight: %s, fixed width: %s"), m_font.GetStyleString().c_str(), m_font.GetWeightString().c_str(), m_font.IsFixedWidth() ? _T("yes") : _T("no")); dc.DrawText(fontInfo, x, y); y += hLine; if ( m_font.Ok() ) { wxNativeFontInfo *info = m_font.GetNativeFontInfo(); if ( info ) { delete info; wxString fontDesc = m_font.GetNativeFontInfoUserDesc(); fontInfo.Printf(wxT("Native font info: %s"), fontDesc.c_str()); dc.DrawText(fontInfo, x, y); y += hLine; } } y += hLine; // prepare to draw the font dc.SetFont(m_font); dc.SetTextForeground(m_colour); // the size of one cell (Normally biggest char + small margin) long maxCharWidth, maxCharHeight; dc.GetTextExtent(wxT("W"), &maxCharWidth, &maxCharHeight); int w = maxCharWidth + 5, h = maxCharHeight + 4; // print all font symbols from 32 to 256 in 7 rows of 32 chars each for ( int i = 0; i < 7; i++ ) { for ( int j = 0; j < 32; j++ ) { wxChar c = 32 * (i + 1) + j; long charWidth, charHeight; dc.GetTextExtent(c, &charWidth, &charHeight); dc.DrawText ( c, x + w*j + (maxCharWidth - charWidth) / 2 + 1, y + h*i + (maxCharHeight - charHeight) / 2 ); } } // draw the lines between them dc.SetPen(wxPen(wxColour(_T("blue")), 1, wxSOLID)); int l; // horizontal for ( l = 0; l < 8; l++ ) { int yl = y + h*l - 2; dc.DrawLine(x - 2, yl, x + 32*w - 1, yl); } // and vertical for ( l = 0; l < 33; l++ ) { int xl = x + w*l - 2; dc.DrawLine(xl, y - 2, xl, y + 7*h - 1); } }