samples/html/test/test.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        test.cpp
   3 // Purpose:     wxHtml testing example
   4 /////////////////////////////////////////////////////////////////////////////
   5
   6 #ifdef __GNUG__
   7     #pragma implementation "test.cpp"
   8     #pragma interface "test.cpp"
   9 #endif
  10
  11 // For compilers that support precompilation, includes "wx/wx.h".
  12 #include <wx/wxprec.h>
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 // for all others, include the necessary headers (this file is usually all you
  19 // need because it includes almost all "standard" wxWindows headers
  20 #ifndef WX_PRECOMP
  21     #include <wx/wx.h>
  22 #endif
  23
  24 #include <wx/image.h>
  25 #include <wx/html/htmlwin.h>
  26
  27 // ----------------------------------------------------------------------------
  28 // private classes
  29 // ----------------------------------------------------------------------------
  30
  31 // Define a new application type, each program should derive a class from wxApp
  32    class MyApp : public wxApp
  33    {
  34    public:
  35     // override base class virtuals
  36     // ----------------------------
  37
  38     // this one is called on application startup and is a good place for the app
  39     // initialization (doing it here and not in the ctor allows to have an error
  40     // return: if OnInit() returns false, the application terminates)
  41       virtual bool OnInit();
  42    };
  43
  44 // Define a new frame type: this is going to be our main frame
  45    class MyFrame : public wxFrame
  46    {
  47    public:
  48     // ctor(s)
  49       MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  50
  51     // event handlers (these functions should _not_ be virtual)
  52       void OnQuit(wxCommandEvent& event);
  53       void OnAbout(wxCommandEvent& event);
  54       void OnBack(wxCommandEvent& event);
  55       void OnForward(wxCommandEvent& event);
  56
  57    private:
  58         wxHtmlWindow *m_Html;
  59     // any class wishing to process wxWindows events must use this macro
  60     DECLARE_EVENT_TABLE()
  61    };
  62
  63 // ----------------------------------------------------------------------------
  64 // constants
  65 // ----------------------------------------------------------------------------
  66
  67 // IDs for the controls and the menu commands
  68    enum
  69    {
  70     // menu items
  71    Minimal_Quit = 1,
  72    Minimal_About,
  73    Minimal_Back,
  74    Minimal_Forward,
  75
  76     // controls start here (the numbers are, of course, arbitrary)
  77    Minimal_Text = 1000,
  78    };
  79
  80 // ----------------------------------------------------------------------------
  81 // event tables and other macros for wxWindows
  82 // ----------------------------------------------------------------------------
  83
  84 // the event tables connect the wxWindows events with the functions (event
  85 // handlers) which process them. It can be also done at run-time, but for the
  86 // simple menu events like this the static method is much simpler.
  87    BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  88    EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
  89    EVT_MENU(Minimal_About, MyFrame::OnAbout)
  90    EVT_MENU(Minimal_Back, MyFrame::OnBack)
  91    EVT_MENU(Minimal_Forward, MyFrame::OnForward)
  92    END_EVENT_TABLE()
  93
  94    // Create a new application object: this macro will allow wxWindows to create
  95    // the application object during program execution (it's better than using a
  96    // static object for many reasons) and also declares the accessor function
  97    // wxGetApp() which will return the reference of the right type (i.e. MyApp and
  98    // not wxApp)
  99    IMPLEMENT_APP(MyApp)
 100
 101    // ============================================================================
 102    // implementation
 103    // ============================================================================
 104
 105    // ----------------------------------------------------------------------------
 106    // the application class
 107    // ----------------------------------------------------------------------------
 108    // `Main program' equivalent: the program execution "starts" here
 109    bool MyApp::OnInit()
 110    {
 111      wxLogDebug("[starting testing app]");
 112      #if wxUSE_LIBPNG
 113      wxImage::AddHandler(new wxPNGHandler);
 114      #endif
 115      #if wxUSE_LIBJPEG
 116      wxImage::AddHandler(new wxJPEGHandler);
 117      #endif
 118      #if wxUSE_GIF
 119      wxImage::AddHandler(new wxGIFHandler);
 120      #endif
 121     // Create the main application window
 122       MyFrame *frame = new MyFrame("wxHtmlWindow testing application",
 123          wxPoint(50, 50), wxSize(640, 480));
 124       MyFrame *frame2 = new MyFrame("wxHtmlWindow testing application, frame 2",
 125          wxPoint(150, 50), wxSize(320, 240));
 126
 127     // Show it and tell the application that it's our main window
 128     // @@@ what does it do exactly, in fact? is it necessary here?
 129       frame->Show(TRUE);
 130       frame2->Show(TRUE);
 131       SetTopWindow(frame);
 132
 133
 134     // success: wxApp::OnRun() will be called which will enter the main message
 135     // loop and the application will run. If we returned FALSE here, the
 136     // application would exit immediately.
 137        return TRUE;
 138    }
 139
 140 // ----------------------------------------------------------------------------
 141 // main frame
 142 // ----------------------------------------------------------------------------
 143
 144
 145 // frame constructor
 146    MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 147    : wxFrame((wxFrame *)NULL, -1, title, pos, size, wxDEFAULT_FRAME_STYLE, "html_test_app")
 148    {
 149     // create a menu bar
 150       wxMenu *menuFile = new wxMenu;
 151       wxMenu *menuNav = new wxMenu;
 152
 153       menuFile->Append(Minimal_About, "&Load wxWindows manual page");
 154       menuFile->AppendSeparator();
 155       menuFile->Append(Minimal_Quit, "&Close frame");
 156       menuNav->Append(Minimal_Back, "Go &BACK");
 157       menuNav->Append(Minimal_Forward, "Go &FORWARD");
 158
 159     // now append the freshly created menu to the menu bar...
 160       wxMenuBar *menuBar = new wxMenuBar;
 161       menuBar->Append(menuFile, "&File");
 162       menuBar->Append(menuNav, "&Navigate");
 163
 164     // ... and attach this menu bar to the frame
 165       SetMenuBar(menuBar);
 166
 167       CreateStatusBar(1);
 168
 169       {
 170       wxConfig *cfg = new wxConfig("wxHtmlTest");
 171       m_Html = new wxHtmlWindow(this);
 172       m_Html -> SetRelatedFrame(this, "HTML : %s");
 173       m_Html -> SetRelatedStatusBar(0);
 174       m_Html -> ReadCustomization(cfg);
 175       delete cfg;
 176       m_Html -> LoadPage("test.htm");
 177       }
 178    }
 179
 180
 181 // event handlers
 182
 183    void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 184    {
 185     // TRUE is to force the frame to close
 186     wxLogDebug("about to save config...");
 187     wxConfig *cfg = new wxConfig("wxHtmlTest");
 188     m_Html -> WriteCustomization(cfg);
 189     delete cfg;
 190     Close(TRUE);
 191    }
 192
 193    void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 194    {
 195      m_Html -> LoadPage("fft.html");
 196    }
 197
 198
 199
 200    void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 201    {
 202    if (!m_Html -> HistoryBack()) wxMessageBox("You reached prehistory era!");
 203    }
 204
 205
 206    void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 207    {
 208    if (!m_Html -> HistoryForward()) wxMessageBox("No more items in history!");
 209    }