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 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_Back,
  72     Minimal_Forward
  73 };
  74
  75 // ----------------------------------------------------------------------------
  76 // event tables and other macros for wxWindows
  77 // ----------------------------------------------------------------------------
  78
  79 // the event tables connect the wxWindows events with the functions (event
  80 // handlers) which process them. It can be also done at run-time, but for the
  81 // simple menu events like this the static method is much simpler.
  82 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  83     EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
  84     EVT_MENU(Minimal_Back, MyFrame::OnBack)
  85     EVT_MENU(Minimal_Forward, MyFrame::OnForward)
  86 END_EVENT_TABLE()
  87
  88 // Create a new application object: this macro will allow wxWindows to create
  89 // the application object during program execution (it's better than using a
  90 // static object for many reasons) and also declares the accessor function
  91 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
  92 // not wxApp)
  93 IMPLEMENT_APP(MyApp)
  94
  95 // ============================================================================
  96 // implementation
  97 // ============================================================================
  98
  99 // ----------------------------------------------------------------------------
 100 // the application class
 101 // ----------------------------------------------------------------------------
 102 // `Main program' equivalent: the program execution "starts" here
 103 bool MyApp::OnInit()
 104 {
 105 #if wxUSE_LIBPNG
 106     wxImage::AddHandler(new wxPNGHandler);
 107 #endif
 108 #if wxUSE_LIBJPEG
 109     wxImage::AddHandler(new wxJPEGHandler);
 110 #endif
 111
 112     wxFileSystem::AddHandler(new wxZipFSHandler);
 113
 114     // Create the main application window
 115     MyFrame *frame = new MyFrame( "wxHtmlWindow testing application",
 116         wxPoint(50, 50), wxSize(640, 480) );
 117
 118     // Show it and tell the application that it's our main window
 119     // @@@ what does it do exactly, in fact? is it necessary here?
 120     frame->Show(TRUE);
 121     SetTopWindow(frame);
 122
 123     // success: wxApp::OnRun() will be called which will enter the main message
 124     // loop and the application will run. If we returned FALSE here, the
 125     // application would exit immediately.
 126
 127     return TRUE;
 128 }
 129
 130 // ----------------------------------------------------------------------------
 131 // main frame
 132 // ----------------------------------------------------------------------------
 133
 134 wxHtmlWindow *html;
 135
 136 // frame constructor
 137 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 138 : wxFrame((wxFrame *)NULL, -1, title, pos, size)
 139 {
 140     // create a menu bar
 141     wxMenu *menuFile = new wxMenu;
 142     wxMenu *menuNav = new wxMenu;
 143
 144     menuFile->Append(Minimal_Quit, "E&xit");
 145     menuNav->Append(Minimal_Back, "Go &BACK");
 146     menuNav->Append(Minimal_Forward, "Go &FORWARD");
 147
 148     // now append the freshly created menu to the menu bar...
 149     wxMenuBar *menuBar = new wxMenuBar;
 150     menuBar->Append(menuFile, "&File");
 151     menuBar->Append(menuNav, "&Navigate");
 152
 153     // ... and attach this menu bar to the frame
 154     SetMenuBar(menuBar);
 155
 156     CreateStatusBar(1);
 157
 158     {
 159     html = new wxHtmlWindow(this);
 160     html -> SetRelatedFrame(this, "HTML : %s");
 161     html -> SetRelatedStatusBar(0);
 162     html -> LoadPage("start.htm");
 163     }
 164 }
 165
 166
 167 // event handlers
 168
 169 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 170 {
 171     // TRUE is to force the frame to close
 172     Close(TRUE);
 173 }
 174
 175 void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 176 {
 177     if (!html -> HistoryBack()) wxMessageBox("You reached prehistory era!");
 178 }
 179
 180 void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 181 {
 182     if (!html -> HistoryForward()) wxMessageBox("No more items in history!");
 183 }