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wxWidgets/samples/font/font.cpp
Kevin Ollivier 509f339a81 rebake 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55457 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2008-09-04 07:57:32 +00:00

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/////////////////////////////////////////////////////////////////////////////
// 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 wxWidgets 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"
#include "../sample.xpm"
#ifdef __WXMAC__
#undef wxFontDialog
#include "wx/osx/fontdlg.h"
#endif
// used as title for several dialog boxes
static const wxChar SAMPLE_TITLE[] = _T("wxWidgets Font Sample");
// ----------------------------------------------------------------------------
// 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& WXUNUSED(event)) { DoResizeFont(+2); }
void OnDecFont(wxCommandEvent& WXUNUSED(event)) { DoResizeFont(-2); }
void OnBold(wxCommandEvent& event);
void OnItalic(wxCommandEvent& event);
void OnUnderline(wxCommandEvent& event);
void OnwxPointerFont(wxCommandEvent& event);
void OnTestTextValue(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 OnSetNativeDesc(wxCommandEvent& event);
void OnSetNativeUserDesc(wxCommandEvent& event);
void OnSetFaceName(wxCommandEvent& event);
void OnSetEncoding(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);
// ask the user to choose an encoding and return it or
// wxFONTENCODING_SYSTEM if the dialog was cancelled
wxFontEncoding GetEncodingFromUser();
size_t m_fontSize; // in points
wxTextCtrl *m_textctrl;
MyCanvas *m_canvas;
private:
// any class wishing to process wxWidgets 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_TestTextValue,
Font_IncSize,
Font_DecSize,
Font_Bold,
Font_Italic,
Font_Underlined,
Font_wxNORMAL_FONT,
Font_wxSMALL_FONT,
Font_wxITALIC_FONT,
Font_wxSWISS_FONT,
Font_Standard,
Font_Choose = 100,
Font_EnumFamiliesForEncoding,
Font_EnumFamilies,
Font_EnumFixedFamilies,
Font_EnumEncodings,
Font_SetNativeDesc,
Font_SetNativeUserDesc,
Font_SetFaceName,
Font_SetEncoding,
Font_Max
};
// ----------------------------------------------------------------------------
// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------
// the event tables connect the wxWidgets 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_TestTextValue, MyFrame::OnTestTextValue)
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_SetNativeDesc, MyFrame::OnSetNativeDesc)
EVT_MENU(Font_SetNativeUserDesc, MyFrame::OnSetNativeUserDesc)
EVT_MENU(Font_SetFaceName, MyFrame::OnSetFaceName)
EVT_MENU(Font_SetEncoding, MyFrame::OnSetEncoding)
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 wxWidgets 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()
{
if ( !wxApp::OnInit() )
return false;
// Create the main application window
MyFrame *frame = new MyFrame(wxT("Font wxWidgets 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, wxID_ANY, title, pos, size), m_textctrl(NULL)
{
m_fontSize = wxNORMAL_FONT->GetPointSize();
SetIcon(wxIcon(sample_xpm));
// create a menu bar
wxMenu *menuFile = new wxMenu;
menuFile->Append(Font_TestTextValue, wxT("&Test text value"),
wxT("Verify that getting and setting text value doesn't change it"));
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->AppendCheckItem(Font_Bold, wxT("&Bold\tCtrl-B"), wxT("Toggle bold state"));
menuFont->AppendCheckItem(Font_Italic, wxT("&Oblique\tCtrl-O"), wxT("Toggle italic state"));
menuFont->AppendCheckItem(Font_Underlined, wxT("&Underlined\tCtrl-U"),
wxT("Toggle underlined state"));
menuFont->AppendSeparator();
menuFont->Append(Font_SetNativeDesc,
wxT("Set native font &description\tShift-Ctrl-D"));
menuFont->Append(Font_SetNativeUserDesc,
wxT("Set &user font description\tShift-Ctrl-U"));
menuFont->Append(Font_SetFaceName, wxT("Check font face name"));
menuFont->Append(Font_SetEncoding, wxT("Set font &encoding\tShift-Ctrl-E"));
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 wxWidgets"));
menuStdFonts->Append(Font_wxSMALL_FONT, wxT("wxSMALL_FONT"), wxT("Small font used by wxWidgets"));
menuStdFonts->Append(Font_wxITALIC_FONT, wxT("wxITALIC_FONT"), wxT("Italic font used by wxWidgets"));
menuStdFonts->Append(Font_wxSWISS_FONT, wxT("wxSWISS_FONT"), wxT("Swiss font used by wxWidgets"));
menuSelect->Append(Font_Standard, 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, wxID_ANY,
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);
#if wxUSE_STATUSBAR
// create a status bar just for fun (by default with 1 pane only)
CreateStatusBar();
SetStatusText(wxT("Welcome to wxWidgets font demo!"));
#endif // wxUSE_STATUSBAR
}
// --------------------------------------------------------
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 %u: %s (available in facename '%s')\n"),
(unsigned int) ++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"),
SAMPLE_TITLE,
nFacenames,
facenames,
this
);
if ( n != -1 )
facename = facenames[n];
delete [] facenames;
}
if ( !facename.empty() )
{
wxFont font(wxNORMAL_FONT->GetPointSize(),
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))
{
wxFontEncoding enc = GetEncodingFromUser();
if ( enc != wxFONTENCODING_SYSTEM )
{
DoEnumerateFamilies(false, enc);
}
}
void MyFrame::OnSetNativeDesc(wxCommandEvent& WXUNUSED(event))
{
wxString fontInfo = wxGetTextFromUser
(
wxT("Enter native font string"),
wxT("Input font description"),
m_canvas->GetTextFont().GetNativeFontInfoDesc(),
this
);
if ( fontInfo.empty() )
return; // user clicked "Cancel" - do nothing
wxFont font;
font.SetNativeFontInfo(fontInfo);
if ( !font.Ok() )
{
wxLogError(wxT("Font info string \"%s\" is invalid."),
fontInfo.c_str());
return;
}
DoChangeFont(font);
}
void MyFrame::OnSetFaceName(wxCommandEvent& WXUNUSED(event))
{
wxString facename = GetCanvas()->GetTextFont().GetFaceName();
wxString newFaceName = wxGetTextFromUser(
wxT("Here you can edit current font face name."),
wxT("Input font facename"), facename,
this);
if (newFaceName.IsEmpty())
return; // user clicked "Cancel" - do nothing
wxFont font(GetCanvas()->GetTextFont());
if (font.SetFaceName(newFaceName)) // change facename only
{
wxASSERT_MSG(font.Ok(), wxT("The font should now be valid"));
DoChangeFont(font);
}
else
{
wxASSERT_MSG(!font.Ok(), wxT("The font should now be invalid"));
wxMessageBox(wxT("There is no font with such face name..."),
wxT("Invalid face name"), wxOK|wxICON_ERROR, this);
}
}
void MyFrame::OnSetNativeUserDesc(wxCommandEvent& WXUNUSED(event))
{
wxString fontdesc = GetCanvas()->GetTextFont().GetNativeFontInfoUserDesc();
wxString fontUserInfo = wxGetTextFromUser(
wxT("Here you can edit current font description"),
wxT("Input font description"), fontdesc,
this);
if (fontUserInfo.IsEmpty())
return; // user clicked "Cancel" - do nothing
wxFont font;
if (font.SetNativeFontInfoUserDesc(fontUserInfo))
{
wxASSERT_MSG(font.Ok(), wxT("The font should now be valid"));
DoChangeFont(font);
}
else
{
wxASSERT_MSG(!font.Ok(), wxT("The font should now be invalid"));
wxMessageBox(wxT("Error trying to create a font with such description..."));
}
}
void MyFrame::OnSetEncoding(wxCommandEvent& WXUNUSED(event))
{
wxFontEncoding enc = GetEncodingFromUser();
if ( enc == wxFONTENCODING_SYSTEM )
return;
wxFont font = m_canvas->GetTextFont();
font.SetEncoding(enc);
DoChangeFont(font);
}
wxFontEncoding MyFrame::GetEncodingFromUser()
{
wxArrayString names;
wxArrayInt encodings;
const size_t count = wxFontMapper::GetSupportedEncodingsCount();
names.reserve(count);
encodings.reserve(count);
for ( size_t n = 0; n < count; n++ )
{
wxFontEncoding enc = wxFontMapper::GetEncoding(n);
encodings.push_back(enc);
names.push_back(wxFontMapper::GetEncodingName(enc));
}
int i = wxGetSingleChoiceIndex
(
wxT("Choose the encoding"),
SAMPLE_TITLE,
names,
this
);
return i == -1 ? wxFONTENCODING_SYSTEM : (wxFontEncoding)encodings[i];
}
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 = *wxNORMAL_FONT;
break;
case Font_wxSMALL_FONT:
font = *wxSMALL_FONT;
break;
case Font_wxITALIC_FONT:
font = *wxITALIC_FONT;
break;
case Font_wxSWISS_FONT:
font = *wxSWISS_FONT;
break;
default:
wxFAIL_MSG( wxT("unknown standard font") );
return;
}
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);
// 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::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);
}
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// true is to force the frame to close
Close(true);
}
void MyFrame::OnTestTextValue(wxCommandEvent& WXUNUSED(event))
{
wxString value = m_textctrl->GetValue();
m_textctrl->SetValue(value);
if ( m_textctrl->GetValue() != value )
{
wxLogError(wxT("Text value changed after getting and setting it"));
}
}
void MyFrame::OnViewMsg(wxCommandEvent& WXUNUSED(event))
{
#if wxUSE_FILEDLG
// 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(wxNORMAL_FONT->GetPointSize(),
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());
}
}
#endif // wxUSE_FILEDLG
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxMessageBox(wxT("wxWidgets font sample\n")
wxT("(c) 1999-2006 Vadim Zeitlin"),
wxString(wxT("About ")) + SAMPLE_TITLE,
wxOK | wxICON_INFORMATION, this);
}
// ----------------------------------------------------------------------------
// MyCanvas
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(MyCanvas, wxWindow)
EVT_PAINT(MyCanvas::OnPaint)
END_EVENT_TABLE()
MyCanvas::MyCanvas( wxWindow *parent )
: wxWindow( parent, wxID_ANY ),
m_colour(*wxRED), m_font(*wxNORMAL_FONT)
{
}
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::
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() )
{
const wxNativeFontInfo *info = m_font.GetNativeFontInfo();
if ( 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)
wxCoord 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 = (wxChar)(32 * (i + 1) + j);
wxCoord 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);
}
}
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