samples/html/zip/zip.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        zip.cpp
   3 // Purpose:     wxHtml sample
   4 // Author:      ?
   5 // Modified by:
   6 // Created:     ?
   7 // Copyright:   (c) wxWidgets team
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  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" wxWidgets 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 #ifndef wxHAS_IMAGES_IN_RESOURCES
  29     #include "../../sample.xpm"
  30 #endif
  31
  32 // ----------------------------------------------------------------------------
  33 // private classes
  34 // ----------------------------------------------------------------------------
  35
  36 // Define a new application type, each program should derive a class from wxApp
  37 class MyApp : public wxApp
  38 {
  39 public:
  40     // override base class virtuals
  41     // ----------------------------
  42
  43     // this one is called on application startup and is a good place for the app
  44     // initialization (doing it here and not in the ctor allows to have an error
  45     // return: if OnInit() returns false, the application terminates)
  46     virtual bool OnInit();
  47 };
  48
  49 // Define a new frame type: this is going to be our main frame
  50 class MyFrame : public wxFrame
  51 {
  52 public:
  53     // ctor(s)
  54     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  55
  56     // event handlers (these functions should _not_ be virtual)
  57     void OnQuit(wxCommandEvent& event);
  58     void OnBack(wxCommandEvent& event);
  59     void OnForward(wxCommandEvent& event);
  60
  61 private:
  62     // any class wishing to process wxWidgets events must use this macro
  63     DECLARE_EVENT_TABLE()
  64 };
  65
  66 // ----------------------------------------------------------------------------
  67 // constants
  68 // ----------------------------------------------------------------------------
  69
  70 // IDs for the controls and the menu commands
  71 enum
  72 {
  73     // menu items
  74     Minimal_Quit = 1,
  75     Minimal_Back,
  76     Minimal_Forward
  77 };
  78
  79 // ----------------------------------------------------------------------------
  80 // event tables and other macros for wxWidgets
  81 // ----------------------------------------------------------------------------
  82
  83 // the event tables connect the wxWidgets 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_Back, MyFrame::OnBack)
  89     EVT_MENU(Minimal_Forward, MyFrame::OnForward)
  90 END_EVENT_TABLE()
  91
  92 // Create a new application object: this macro will allow wxWidgets to create
  93 // the application object during program execution (it's better than using a
  94 // static object for many reasons) and also declares the accessor function
  95 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
  96 // not wxApp)
  97 IMPLEMENT_APP(MyApp)
  98
  99 // ============================================================================
 100 // implementation
 101 // ============================================================================
 102
 103 // ----------------------------------------------------------------------------
 104 // the application class
 105 // ----------------------------------------------------------------------------
 106 // `Main program' equivalent: the program execution "starts" here
 107 bool MyApp::OnInit()
 108 {
 109     if ( !wxApp::OnInit() )
 110         return false;
 111
 112 #if wxUSE_LIBPNG
 113     wxImage::AddHandler(new wxPNGHandler);
 114 #endif
 115 #if wxUSE_LIBJPEG
 116     wxImage::AddHandler(new wxJPEGHandler);
 117 #endif
 118
 119     wxFileSystem::AddHandler(new wxZipFSHandler);
 120
 121     // Create the main application window
 122     MyFrame *frame = new MyFrame(_("wxHtmlWindow testing application"),
 123         wxDefaultPosition, wxSize(640, 480) );
 124
 125     // Show it
 126     frame->Show(true);
 127
 128     // success: wxApp::OnRun() will be called which will enter the main message
 129     // loop and the application will run. If we returned false here, the
 130     // application would exit immediately.
 131
 132     return true;
 133 }
 134
 135 // ----------------------------------------------------------------------------
 136 // main frame
 137 // ----------------------------------------------------------------------------
 138
 139 wxHtmlWindow *html;
 140
 141 // frame constructor
 142 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 143     : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
 144 {
 145     SetIcon(wxICON(sample));
 146
 147     // create a menu bar
 148     wxMenu *menuFile = new wxMenu;
 149     wxMenu *menuNav = new wxMenu;
 150
 151     menuFile->Append(Minimal_Quit, _("E&xit"));
 152     menuNav->Append(Minimal_Back, _("Go &BACK"));
 153     menuNav->Append(Minimal_Forward, _("Go &FORWARD"));
 154
 155     // now append the freshly created menu to the menu bar...
 156     wxMenuBar *menuBar = new wxMenuBar;
 157     menuBar->Append(menuFile, _("&File"));
 158     menuBar->Append(menuNav, _("&Navigate"));
 159
 160     // ... and attach this menu bar to the frame
 161     SetMenuBar(menuBar);
 162
 163 #if wxUSE_STATUSBAR
 164     CreateStatusBar(1);
 165 #endif // wxUSE_STATUSBAR
 166
 167     html = new wxHtmlWindow(this);
 168     html -> SetRelatedFrame(this, _("HTML : %s"));
 169 #if wxUSE_STATUSBAR
 170     html -> SetRelatedStatusBar(0);
 171 #endif // wxUSE_STATUSBAR
 172     html -> LoadPage(wxT("start.htm"));
 173 }
 174
 175
 176 // event handlers
 177
 178 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 179 {
 180     // true is to force the frame to close
 181     Close(true);
 182 }
 183
 184 void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 185 {
 186     if (!html -> HistoryBack()) wxMessageBox(_("You reached prehistory era!"));
 187 }
 188
 189 void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 190 {
 191     if (!html -> HistoryForward()) wxMessageBox(_("No more items in history!"));
 192 }