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     // Create the main application window
 118       MyFrame *frame = new MyFrame("wxHtmlWindow testing application",
 119          wxPoint(50, 50), wxSize(640, 480));
 120
 121     // Show it and tell the application that it's our main window
 122     // @@@ what does it do exactly, in fact? is it necessary here?
 123       frame->Show(TRUE);
 124       SetTopWindow(frame);
 125
 126
 127     // success: wxApp::OnRun() will be called which will enter the main message
 128     // loop and the application will run. If we returned FALSE here, the
 129     // application would exit immediately.
 130        return TRUE;
 131    }
 132
 133 // ----------------------------------------------------------------------------
 134 // main frame
 135 // ----------------------------------------------------------------------------
 136
 137 wxHtmlWindow *html;
 138
 139 // frame constructor
 140    MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 141    : wxFrame((wxFrame *)NULL, -1, title, pos, size)
 142    {
 143     // create a menu bar
 144       wxMenu *menuFile = new wxMenu;
 145       wxMenu *menuNav = new wxMenu;
 146
 147       menuFile->Append(Minimal_About, "&Load wxWindows manual page");
 148       menuFile->AppendSeparator();
 149       menuFile->Append(Minimal_Quit, "E&xit");
 150       menuNav->Append(Minimal_Back, "Go &BACK");
 151       menuNav->Append(Minimal_Forward, "Go &FORWARD");
 152
 153     // now append the freshly created menu to the menu bar...
 154       wxMenuBar *menuBar = new wxMenuBar;
 155       menuBar->Append(menuFile, "&File");
 156       menuBar->Append(menuNav, "&Navigate");
 157
 158     // ... and attach this menu bar to the frame
 159       SetMenuBar(menuBar);
 160
 161       CreateStatusBar(1);
 162
 163       {
 164       wxConfig *cfg = new wxConfig("wxHtmlTest");
 165       html = new wxHtmlWindow(this);
 166       html -> SetRelatedFrame(this, "HTML : %s");
 167       html -> SetRelatedStatusBar(0);
 168       html -> ReadCustomization(cfg);
 169       delete cfg;
 170       html -> LoadPage("test.htm");
 171       }
 172    }
 173
 174
 175 // event handlers
 176
 177    void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 178    {
 179     // TRUE is to force the frame to close
 180     wxLogDebug("about to save config...");
 181     wxConfig *cfg = new wxConfig("wxHtmlTest");
 182     html -> WriteCustomization(cfg);
 183     delete cfg;
 184       Close(TRUE);
 185    }
 186
 187    void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 188    {
 189    html -> LoadPage("fft.html");
 190    }
 191
 192
 193
 194    void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 195    {
 196    if (!html -> HistoryBack()) wxMessageBox("You reached prehistory era!");
 197    }
 198
 199
 200    void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 201    {
 202    if (!html -> HistoryForward()) wxMessageBox("No more items in history!");
 203    }