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     // any class wishing to process wxWindows events must use this macro
  59     DECLARE_EVENT_TABLE()
  60    };
  61
  62 // ----------------------------------------------------------------------------
  63 // constants
  64 // ----------------------------------------------------------------------------
  65
  66 // IDs for the controls and the menu commands
  67    enum
  68    {
  69     // menu items
  70    Minimal_Quit = 1,
  71    Minimal_About,
  72    Minimal_Back,
  73    Minimal_Forward,
  74
  75     // controls start here (the numbers are, of course, arbitrary)
  76    Minimal_Text = 1000,
  77    };
  78
  79 // ----------------------------------------------------------------------------
  80 // event tables and other macros for wxWindows
  81 // ----------------------------------------------------------------------------
  82
  83 // the event tables connect the wxWindows events with the functions (event
  84 // handlers) which process them. It can be also done at run-time, but for the
  85 // simple menu events like this the static method is much simpler.
  86    BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  87    EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
  88    EVT_MENU(Minimal_About, MyFrame::OnAbout)
  89    EVT_MENU(Minimal_Back, MyFrame::OnBack)
  90    EVT_MENU(Minimal_Forward, MyFrame::OnForward)
  91    END_EVENT_TABLE()
  92
  93    // Create a new application object: this macro will allow wxWindows to create
  94    // the application object during program execution (it's better than using a
  95    // static object for many reasons) and also declares the accessor function
  96    // wxGetApp() which will return the reference of the right type (i.e. MyApp and
  97    // not wxApp)
  98    IMPLEMENT_APP(MyApp)
  99
 100    // ============================================================================
 101    // implementation
 102    // ============================================================================
 103
 104    // ----------------------------------------------------------------------------
 105    // the application class
 106    // ----------------------------------------------------------------------------
 107    // `Main program' equivalent: the program execution "starts" here
 108    bool MyApp::OnInit()
 109    {
 110      wxLogDebug("[starting testing app]");
 111      #if wxUSE_LIBPNG
 112      wxImage::AddHandler(new wxPNGHandler);
 113      #endif
 114      #if wxUSE_LIBJPEG
 115      wxImage::AddHandler(new wxJPEGHandler);
 116      #endif
 117      #if wxUSE_GIF
 118      wxImage::AddHandler(new wxGIFHandler);
 119      #endif
 120     // Create the main application window
 121       MyFrame *frame = new MyFrame("wxHtmlWindow testing application",
 122          wxPoint(50, 50), wxSize(640, 480));
 123       MyFrame *frame2 = new MyFrame("wxHtmlWindow testing application",
 124          wxPoint(150, 50), wxSize(640, 480));
 125
 126     // Show it and tell the application that it's our main window
 127     // @@@ what does it do exactly, in fact? is it necessary here?
 128       frame->Show(TRUE);
 129       frame2->Show(TRUE);
 130       SetTopWindow(frame);
 131
 132
 133     // success: wxApp::OnRun() will be called which will enter the main message
 134     // loop and the application will run. If we returned FALSE here, the
 135     // application would exit immediately.
 136        return TRUE;
 137    }
 138
 139 // ----------------------------------------------------------------------------
 140 // main frame
 141 // ----------------------------------------------------------------------------
 142
 143 wxHtmlWindow *html;
 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, "E&xit");
 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       html = new wxHtmlWindow(this);
 172       html -> SetRelatedFrame(this, "HTML : %s");
 173       html -> SetRelatedStatusBar(0);
 174       html -> ReadCustomization(cfg);
 175       delete cfg;
 176       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     html -> WriteCustomization(cfg);
 189     delete cfg;
 190       Close(TRUE);
 191    }
 192
 193    void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 194    {
 195    html -> LoadPage("fft.html");
 196    }
 197
 198
 199
 200    void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 201    {
 202    if (!html -> HistoryBack()) wxMessageBox("You reached prehistory era!");
 203    }
 204
 205
 206    void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 207    {
 208    if (!html -> HistoryForward()) wxMessageBox("No more items in history!");
 209    }