samples/html/zip/zip.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 #include <wx/fs_zip.h>
  27
  28 // ----------------------------------------------------------------------------
  29 // private classes
  30 // ----------------------------------------------------------------------------
  31
  32 // Define a new application type, each program should derive a class from wxApp
  33    class MyApp : public wxApp
  34    {
  35    public:
  36     // override base class virtuals
  37     // ----------------------------
  38
  39     // this one is called on application startup and is a good place for the app
  40     // initialization (doing it here and not in the ctor allows to have an error
  41     // return: if OnInit() returns false, the application terminates)
  42       virtual bool OnInit();
  43    };
  44
  45 // Define a new frame type: this is going to be our main frame
  46    class MyFrame : public wxFrame
  47    {
  48    public:
  49     // ctor(s)
  50       MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  51
  52     // event handlers (these functions should _not_ be virtual)
  53       void OnQuit(wxCommandEvent& event);
  54       void OnAbout(wxCommandEvent& event);
  55       void OnBack(wxCommandEvent& event);
  56       void OnForward(wxCommandEvent& event);
  57
  58    private:
  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
  77 // ----------------------------------------------------------------------------
  78 // event tables and other macros for wxWindows
  79 // ----------------------------------------------------------------------------
  80
  81 // the event tables connect the wxWindows events with the functions (event
  82 // handlers) which process them. It can be also done at run-time, but for the
  83 // simple menu events like this the static method is much simpler.
  84    BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  85    EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
  86    EVT_MENU(Minimal_About, MyFrame::OnAbout)
  87    EVT_MENU(Minimal_Back, MyFrame::OnBack)
  88    EVT_MENU(Minimal_Forward, MyFrame::OnForward)
  89    END_EVENT_TABLE()
  90
  91    // Create a new application object: this macro will allow wxWindows to create
  92    // the application object during program execution (it's better than using a
  93    // static object for many reasons) and also declares the accessor function
  94    // wxGetApp() which will return the reference of the right type (i.e. MyApp and
  95    // not wxApp)
  96    IMPLEMENT_APP(MyApp)
  97
  98    // ============================================================================
  99    // implementation
 100    // ============================================================================
 101
 102    // ----------------------------------------------------------------------------
 103    // the application class
 104    // ----------------------------------------------------------------------------
 105    // `Main program' equivalent: the program execution "starts" here
 106    bool MyApp::OnInit()
 107    {
 108      #if wxUSE_LIBPNG
 109      wxImage::AddHandler(new wxPNGHandler);
 110      #endif
 111      #if wxUSE_LIBJPEG
 112      wxImage::AddHandler(new wxJPEGHandler);
 113      #endif
 114
 115      wxFileSystem::AddHandler(new wxZipFSHandler);
 116
 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     // success: wxApp::OnRun() will be called which will enter the main message
 127     // loop and the application will run. If we returned FALSE here, the
 128     // application would exit immediately.
 129       return TRUE;
 130    }
 131
 132 // ----------------------------------------------------------------------------
 133 // main frame
 134 // ----------------------------------------------------------------------------
 135
 136 wxHtmlWindow *html;
 137
 138 // frame constructor
 139    MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 140    : wxFrame((wxFrame *)NULL, -1, title, pos, size)
 141    {
 142     // create a menu bar
 143       wxMenu *menuFile = new wxMenu;
 144       wxMenu *menuNav = new wxMenu;
 145
 146       menuFile->Append(Minimal_Quit, "E&xit");
 147       menuNav->Append(Minimal_Back, "Go &BACK");
 148       menuNav->Append(Minimal_Forward, "Go &FORWARD");
 149
 150     // now append the freshly created menu to the menu bar...
 151       wxMenuBar *menuBar = new wxMenuBar;
 152       menuBar->Append(menuFile, "&File");
 153       menuBar->Append(menuNav, "&Navigate");
 154
 155     // ... and attach this menu bar to the frame
 156       SetMenuBar(menuBar);
 157
 158       CreateStatusBar(1);
 159
 160       {
 161       html = new wxHtmlWindow(this);
 162       html -> SetRelatedFrame(this, "HTML : %s");
 163       html -> SetRelatedStatusBar(0);
 164       html -> LoadPage("start.htm");
 165       }
 166    }
 167
 168
 169 // event handlers
 170
 171    void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 172    {
 173     // TRUE is to force the frame to close
 174       Close(TRUE);
 175    }
 176
 177    void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 178    {
 179    }
 180
 181
 182
 183    void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 184    {
 185    if (!html -> HistoryBack()) wxMessageBox("You reached prehistory era!");
 186    }
 187
 188
 189    void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 190    {
 191    if (!html -> HistoryForward()) wxMessageBox("No more items in history!");
 192    }