15ad38c34f
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26695 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
813 lines
24 KiB
C++
813 lines
24 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: font.cpp
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// Purpose: wxFont demo
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 30.09.99
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// RCS-ID: $Id$
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// Copyright: (c) 1999 Vadim Zeitlin
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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// for all others, include the necessary headers (this file is usually all you
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// need because it includes almost all standard wxWindows headers
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#include "wx/log.h"
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#endif
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#include "wx/choicdlg.h"
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#include "wx/fontdlg.h"
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#include "wx/fontenum.h"
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#include "wx/fontmap.h"
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#include "wx/encconv.h"
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#include "wx/splitter.h"
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#include "wx/textfile.h"
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// ----------------------------------------------------------------------------
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// private classes
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// ----------------------------------------------------------------------------
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// Define a new application type, each program should derive a class from wxApp
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class MyApp : public wxApp
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{
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public:
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// override base class virtuals
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// ----------------------------
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// this one is called on application startup and is a good place for the app
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// initialization (doing it here and not in the ctor allows to have an error
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// return: if OnInit() returns false, the application terminates)
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virtual bool OnInit();
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};
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// MyCanvas is a canvas on which we show the font sample
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class MyCanvas: public wxWindow
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{
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public:
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MyCanvas( wxWindow *parent );
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virtual ~MyCanvas();
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// accessors for the frame
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const wxFont& GetTextFont() const { return m_font; }
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const wxColour& GetColour() const { return m_colour; }
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void SetTextFont(const wxFont& font) { m_font = font; }
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void SetColour(const wxColour& colour) { m_colour = colour; }
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// event handlers
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void OnPaint( wxPaintEvent &event );
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private:
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wxColour m_colour;
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wxFont m_font;
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DECLARE_EVENT_TABLE()
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};
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// Define a new frame type: this is going to be our main frame
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class MyFrame : public wxFrame
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{
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public:
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// ctor(s)
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MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
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// accessors
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MyCanvas *GetCanvas() const { return m_canvas; }
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// event handlers (these functions should _not_ be virtual)
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void OnQuit(wxCommandEvent& event);
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void OnAbout(wxCommandEvent& event);
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void OnIncFont(wxCommandEvent& WXUNUSED(event)) { DoResizeFont(+2); }
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void OnDecFont(wxCommandEvent& WXUNUSED(event)) { DoResizeFont(-2); }
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void OnBold(wxCommandEvent& event);
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void OnItalic(wxCommandEvent& event);
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void OnUnderline(wxCommandEvent& event);
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void OnwxPointerFont(wxCommandEvent& event);
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void OnViewMsg(wxCommandEvent& event);
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void OnSelectFont(wxCommandEvent& event);
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void OnEnumerateFamiliesForEncoding(wxCommandEvent& event);
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void OnEnumerateFamilies(wxCommandEvent& WXUNUSED(event))
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{ DoEnumerateFamilies(FALSE); }
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void OnEnumerateFixedFamilies(wxCommandEvent& WXUNUSED(event))
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{ DoEnumerateFamilies(TRUE); }
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void OnEnumerateEncodings(wxCommandEvent& event);
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void OnCheckNativeToFromString(wxCommandEvent& event);
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protected:
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bool DoEnumerateFamilies(bool fixedWidthOnly,
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wxFontEncoding encoding = wxFONTENCODING_SYSTEM,
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bool silent = FALSE);
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void DoResizeFont(int diff);
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void DoChangeFont(const wxFont& font, const wxColour& col = wxNullColour);
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size_t m_fontSize; // in points
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wxTextCtrl *m_textctrl;
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MyCanvas *m_canvas;
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private:
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// any class wishing to process wxWindows events must use this macro
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DECLARE_EVENT_TABLE()
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};
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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// IDs for the controls and the menu commands
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enum
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{
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// menu items
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Font_Quit = 1,
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Font_About,
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Font_ViewMsg,
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Font_IncSize,
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Font_DecSize,
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Font_Bold,
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Font_Italic,
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Font_Underlined,
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Font_wxNORMAL_FONT,
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Font_wxSMALL_FONT,
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Font_wxITALIC_FONT,
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Font_wxSWISS_FONT,
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Font_Standard,
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Font_Choose = 100,
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Font_EnumFamiliesForEncoding,
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Font_EnumFamilies,
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Font_EnumFixedFamilies,
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Font_EnumEncodings,
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Font_CheckNativeToFromString,
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Font_Max
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};
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// ----------------------------------------------------------------------------
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// event tables and other macros for wxWindows
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// ----------------------------------------------------------------------------
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// the event tables connect the wxWindows events with the functions (event
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// handlers) which process them. It can be also done at run-time, but for the
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// simple menu events like this the static method is much simpler.
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BEGIN_EVENT_TABLE(MyFrame, wxFrame)
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EVT_MENU(Font_Quit, MyFrame::OnQuit)
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EVT_MENU(Font_ViewMsg, MyFrame::OnViewMsg)
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EVT_MENU(Font_About, MyFrame::OnAbout)
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EVT_MENU(Font_IncSize, MyFrame::OnIncFont)
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EVT_MENU(Font_DecSize, MyFrame::OnDecFont)
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EVT_MENU(Font_Bold, MyFrame::OnBold)
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EVT_MENU(Font_Italic, MyFrame::OnItalic)
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EVT_MENU(Font_Underlined, MyFrame::OnUnderline)
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EVT_MENU(Font_wxNORMAL_FONT, MyFrame::OnwxPointerFont)
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EVT_MENU(Font_wxSMALL_FONT, MyFrame::OnwxPointerFont)
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EVT_MENU(Font_wxITALIC_FONT, MyFrame::OnwxPointerFont)
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EVT_MENU(Font_wxSWISS_FONT, MyFrame::OnwxPointerFont)
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EVT_MENU(Font_CheckNativeToFromString, MyFrame::OnCheckNativeToFromString)
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EVT_MENU(Font_Choose, MyFrame::OnSelectFont)
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EVT_MENU(Font_EnumFamiliesForEncoding, MyFrame::OnEnumerateFamiliesForEncoding)
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EVT_MENU(Font_EnumFamilies, MyFrame::OnEnumerateFamilies)
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EVT_MENU(Font_EnumFixedFamilies, MyFrame::OnEnumerateFixedFamilies)
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EVT_MENU(Font_EnumEncodings, MyFrame::OnEnumerateEncodings)
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END_EVENT_TABLE()
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// Create a new application object: this macro will allow wxWindows to create
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// the application object during program execution (it's better than using a
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// static object for many reasons) and also declares the accessor function
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// wxGetApp() which will return the reference of the right type (i.e. MyApp and
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// not wxApp)
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IMPLEMENT_APP(MyApp)
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// the application class
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// ----------------------------------------------------------------------------
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// `Main program' equivalent: the program execution "starts" here
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bool MyApp::OnInit()
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{
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// Create the main application window
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MyFrame *frame = new MyFrame(wxT("Font wxWindows demo"),
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wxPoint(50, 50), wxSize(600, 400));
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// Show it and tell the application that it's our main window
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frame->Show(TRUE);
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SetTopWindow(frame);
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// success: wxApp::OnRun() will be called which will enter the main message
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// loop and the application will run. If we returned FALSE here, the
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// application would exit immediately.
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return TRUE;
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}
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// ----------------------------------------------------------------------------
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// main frame
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// ----------------------------------------------------------------------------
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// frame constructor
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MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
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: wxFrame((wxFrame *)NULL, -1, title, pos, size), m_textctrl(NULL)
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{
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m_fontSize = 12;
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// create a menu bar
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wxMenu *menuFile = new wxMenu;
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menuFile->Append(Font_ViewMsg, wxT("&View...\tCtrl-V"),
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wxT("View an email message file"));
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menuFile->AppendSeparator();
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menuFile->Append(Font_About, wxT("&About...\tCtrl-A"), wxT("Show about dialog"));
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menuFile->AppendSeparator();
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menuFile->Append(Font_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program"));
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wxMenu *menuFont = new wxMenu;
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menuFont->Append(Font_IncSize, wxT("&Increase font size by 2 points\tCtrl-I"));
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menuFont->Append(Font_DecSize, wxT("&Decrease font size by 2 points\tCtrl-D"));
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menuFont->AppendSeparator();
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menuFont->Append(Font_Bold, wxT("&Bold\tCtrl-B"), wxT("Toggle bold state"), TRUE);
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menuFont->Append(Font_Italic, wxT("&Oblique\tCtrl-O"), wxT("Toggle italic state"), TRUE);
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menuFont->Append(Font_Underlined, wxT("&Underlined\tCtrl-U"),
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wxT("Toggle underlined state"), TRUE);
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menuFont->AppendSeparator();
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menuFont->Append(Font_CheckNativeToFromString,
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wxT("Check Native Font Info To/From String"));
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wxMenu *menuSelect = new wxMenu;
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menuSelect->Append(Font_Choose, wxT("&Select font...\tCtrl-S"),
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wxT("Select a standard font"));
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wxMenu *menuStdFonts = new wxMenu;
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menuStdFonts->Append(Font_wxNORMAL_FONT, wxT("wxNORMAL_FONT"), wxT("Normal font used by wxWindows"));
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menuStdFonts->Append(Font_wxSMALL_FONT, wxT("wxSMALL_FONT"), wxT("Small font used by wxWindows"));
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menuStdFonts->Append(Font_wxITALIC_FONT, wxT("wxITALIC_FONT"), wxT("Italic font used by wxWindows"));
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menuStdFonts->Append(Font_wxSWISS_FONT, wxT("wxSWISS_FONT"), wxT("Swiss font used by wxWindows"));
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menuSelect->Append(Font_Standard, wxT("Standar&d fonts"), menuStdFonts);
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menuSelect->AppendSeparator();
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menuSelect->Append(Font_EnumFamilies, wxT("Enumerate font &families\tCtrl-F"));
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menuSelect->Append(Font_EnumFixedFamilies,
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wxT("Enumerate fi&xed font families\tCtrl-X"));
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menuSelect->Append(Font_EnumEncodings,
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wxT("Enumerate &encodings\tCtrl-E"));
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menuSelect->Append(Font_EnumFamiliesForEncoding,
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wxT("Find font for en&coding...\tCtrl-C"),
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wxT("Find font families for given encoding"));
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// now append the freshly created menu to the menu bar...
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wxMenuBar *menuBar = new wxMenuBar;
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menuBar->Append(menuFile, wxT("&File"));
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menuBar->Append(menuFont, wxT("F&ont"));
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menuBar->Append(menuSelect, wxT("&Select"));
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// ... and attach this menu bar to the frame
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SetMenuBar(menuBar);
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wxSplitterWindow *splitter = new wxSplitterWindow(this);
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m_textctrl = new wxTextCtrl(splitter, -1,
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wxT("Paste text here to see how it looks\nlike in the given font"),
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wxDefaultPosition, wxDefaultSize,
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wxTE_MULTILINE);
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m_canvas = new MyCanvas(splitter);
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splitter->SplitHorizontally(m_textctrl, m_canvas, 100);
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// create a status bar just for fun (by default with 1 pane only)
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CreateStatusBar();
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SetStatusText(wxT("Welcome to wxWindows font demo!"));
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}
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// --------------------------------------------------------
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class MyEncodingEnumerator : public wxFontEnumerator
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{
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public:
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MyEncodingEnumerator()
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{ m_n = 0; }
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const wxString& GetText() const
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{ return m_text; }
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protected:
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virtual bool OnFontEncoding(const wxString& facename,
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const wxString& encoding)
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{
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wxString text;
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text.Printf(wxT("Encoding %d: %s (available in facename '%s')\n"),
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++m_n, encoding.c_str(), facename.c_str());
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m_text += text;
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return TRUE;
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}
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private:
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size_t m_n;
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wxString m_text;
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};
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void MyFrame::OnEnumerateEncodings(wxCommandEvent& WXUNUSED(event))
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{
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MyEncodingEnumerator fontEnumerator;
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fontEnumerator.EnumerateEncodings();
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wxLogMessage(wxT("Enumerating all available encodings:\n%s"),
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fontEnumerator.GetText().c_str());
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}
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// -------------------------------------------------------------
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class MyFontEnumerator : public wxFontEnumerator
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{
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public:
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bool GotAny() const
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{ return !m_facenames.IsEmpty(); }
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const wxArrayString& GetFacenames() const
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{ return m_facenames; }
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protected:
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virtual bool OnFacename(const wxString& facename)
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{
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m_facenames.Add(facename);
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return TRUE;
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}
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private:
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wxArrayString m_facenames;
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} fontEnumerator;
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bool MyFrame::DoEnumerateFamilies(bool fixedWidthOnly,
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wxFontEncoding encoding,
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bool silent)
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{
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MyFontEnumerator fontEnumerator;
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fontEnumerator.EnumerateFacenames(encoding, fixedWidthOnly);
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if ( fontEnumerator.GotAny() )
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{
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int nFacenames = fontEnumerator.GetFacenames().GetCount();
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if ( !silent )
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{
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wxLogStatus(this, wxT("Found %d %sfonts"),
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nFacenames, fixedWidthOnly ? wxT("fixed width ") : wxT(""));
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}
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wxString facename;
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if ( silent )
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{
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// choose the first
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facename = fontEnumerator.GetFacenames().Item(0);
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}
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else
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{
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// let the user choose
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wxString *facenames = new wxString[nFacenames];
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int n;
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for ( n = 0; n < nFacenames; n++ )
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facenames[n] = fontEnumerator.GetFacenames().Item(n);
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n = wxGetSingleChoiceIndex(wxT("Choose a facename"), wxT("Font demo"),
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nFacenames, facenames, this);
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if ( n != -1 )
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facename = facenames[n];
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delete [] facenames;
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}
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if ( !facename.IsEmpty() )
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{
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wxFont font(12, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL,
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wxFONTWEIGHT_NORMAL, FALSE, facename, encoding);
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DoChangeFont(font);
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}
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return TRUE;
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}
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else if ( !silent )
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{
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wxLogWarning(wxT("No such fonts found."));
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}
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return FALSE;
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}
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void MyFrame::OnEnumerateFamiliesForEncoding(wxCommandEvent& WXUNUSED(event))
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{
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static wxFontEncoding encodings[] =
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{
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wxFONTENCODING_ISO8859_1,
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wxFONTENCODING_ISO8859_2,
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wxFONTENCODING_ISO8859_5,
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wxFONTENCODING_ISO8859_7,
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wxFONTENCODING_ISO8859_15,
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wxFONTENCODING_KOI8,
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wxFONTENCODING_KOI8_U,
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wxFONTENCODING_CP1250,
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wxFONTENCODING_CP1251,
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wxFONTENCODING_CP1252,
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};
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static const wxString encodingNames[] =
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{
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wxT("Western European (ISO-8859-1)"),
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wxT("Central European (ISO-8859-2)"),
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wxT("Cyrillic (ISO-8859-5)"),
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wxT("Greek (ISO-8859-7)"),
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wxT("Western European with Euro (ISO-8859-15)"),
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wxT("KOI8-R"),
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wxT("KOI8-U"),
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wxT("Windows Central European (CP 1250)"),
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wxT("Windows Cyrillic (CP 1251)"),
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wxT("Windows Western European (CP 1252)"),
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};
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int n = wxGetSingleChoiceIndex(wxT("Choose an encoding"), wxT("Font demo"),
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WXSIZEOF(encodingNames),
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encodingNames,
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this);
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if ( n != -1 )
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{
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DoEnumerateFamilies(FALSE, encodings[n]);
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}
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}
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void MyFrame::OnCheckNativeToFromString(wxCommandEvent& WXUNUSED(event))
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{
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wxString fontInfo = m_canvas->GetTextFont().GetNativeFontInfoDesc();
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if ( fontInfo.IsEmpty() )
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{
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wxLogError(wxT("Native font info string is empty!"));
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}
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else
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{
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wxFont *font = wxFont::New(fontInfo);
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if ( fontInfo != font->GetNativeFontInfoDesc() )
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wxLogError(wxT("wxNativeFontInfo ToString()/FromString() broken!"));
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else
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wxLogMessage(wxT("wxNativeFontInfo works: %s"), fontInfo.c_str());
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delete font;
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}
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}
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void MyFrame::DoResizeFont(int diff)
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{
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wxFont font = m_canvas->GetTextFont();
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font.SetPointSize(font.GetPointSize() + diff);
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DoChangeFont(font);
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}
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void MyFrame::OnBold(wxCommandEvent& event)
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{
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wxFont font = m_canvas->GetTextFont();
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font.SetWeight(event.IsChecked() ? wxFONTWEIGHT_BOLD : wxFONTWEIGHT_NORMAL);
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DoChangeFont(font);
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}
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void MyFrame::OnItalic(wxCommandEvent& event)
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{
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wxFont font = m_canvas->GetTextFont();
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font.SetStyle(event.IsChecked() ? wxFONTSTYLE_ITALIC : wxFONTSTYLE_NORMAL);
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DoChangeFont(font);
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}
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void MyFrame::OnUnderline(wxCommandEvent& event)
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{
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wxFont font = m_canvas->GetTextFont();
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font.SetUnderlined(event.IsChecked());
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DoChangeFont(font);
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}
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void MyFrame::OnwxPointerFont(wxCommandEvent& event)
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{
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wxFont font;
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switch (event.GetId())
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{
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case Font_wxNORMAL_FONT : font = wxFont(*wxNORMAL_FONT); break;
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case Font_wxSMALL_FONT : font = wxFont(*wxSMALL_FONT); break;
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case Font_wxITALIC_FONT : font = wxFont(*wxITALIC_FONT); break;
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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() )
|
|
{
|
|
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)
|
|
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);
|
|
}
|
|
}
|