samples/html/about/about.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        test.cpp
   3 // Purpose:     wxHtml testing example
   4 /////////////////////////////////////////////////////////////////////////////
   5
   6 #if defined(__GNUG__) && !defined(__APPLE__)
   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" wxWidgets headers
  20 #ifndef WX_PRECOMP
  21     #include "wx/wx.h"
  22 #endif
  23
  24 #include "wx/image.h"
  25 #include "wx/imagpng.h"
  26 #include "wx/wxhtml.h"
  27 #include "wx/statline.h"
  28
  29 // ----------------------------------------------------------------------------
  30 // private classes
  31 // ----------------------------------------------------------------------------
  32
  33
  34 // Define a new application type, each program should derive a class from wxApp
  35    class MyApp : public wxApp
  36    {
  37    public:
  38     // override base class virtuals
  39     // ----------------------------
  40
  41     // this one is called on application startup and is a good place for the app
  42     // initialization (doing it here and not in the ctor allows to have an error
  43     // return: if OnInit() returns false, the application terminates)
  44       virtual bool OnInit();
  45    };
  46
  47 // Define a new frame type: this is going to be our main frame
  48    class MyFrame : public wxFrame
  49    {
  50    public:
  51     // ctor(s)
  52       MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  53
  54     // event handlers (these functions should _not_ be virtual)
  55       void OnQuit(wxCommandEvent& event);
  56       void OnAbout(wxCommandEvent& event);
  57
  58    private:
  59     // any class wishing to process wxWidgets 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     // controls start here (the numbers are, of course, arbitrary)
  77    Minimal_Text = 1000
  78    };
  79
  80 // ----------------------------------------------------------------------------
  81 // event tables and other macros for wxWidgets
  82 // ----------------------------------------------------------------------------
  83
  84 // the event tables connect the wxWidgets events with the functions (event
  85 // handlers) which process them. It can be also done at run-time, but for the
  86 // simple menu events like this the static method is much simpler.
  87    BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  88    EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
  89    EVT_MENU(Minimal_About, MyFrame::OnAbout)
  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     wxImage::AddHandler(new wxPNGHandler);
 110     // Create the main application window
 111       MyFrame *frame = new MyFrame(_("wxHtmlWindow testing application"),
 112          wxDefaultPosition, wxDefaultSize);
 113
 114     // Show it and tell the application that it's our main window
 115     // @@@ what does it do exactly, in fact? is it necessary here?
 116       frame->Show(true);
 117       SetTopWindow(frame);
 118
 119
 120     // success: wxApp::OnRun() will be called which will enter the main message
 121     // loop and the application will run. If we returned false here, the
 122     // application would exit immediately.
 123       return true;
 124    }
 125
 126 // ----------------------------------------------------------------------------
 127 // main frame
 128 // ----------------------------------------------------------------------------
 129
 130
 131 // frame constructor
 132    MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 133    : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
 134    {
 135     // create a menu bar
 136       wxMenu *menuFile = new wxMenu;
 137
 138       menuFile->Append(Minimal_About, _("&About"));
 139       menuFile->Append(Minimal_Quit, _("E&xit"));
 140
 141     // now append the freshly created menu to the menu bar...
 142       wxMenuBar *menuBar = new wxMenuBar;
 143       menuBar->Append(menuFile, _("&File"));
 144
 145     // ... and attach this menu bar to the frame
 146       SetMenuBar(menuBar);
 147    }
 148
 149
 150 // event handlers
 151
 152    void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 153    {
 154     // true is to force the frame to close
 155       Close(true);
 156    }
 157
 158    void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 159    {
 160         wxBoxSizer *topsizer;
 161         wxHtmlWindow *html;
 162         wxDialog dlg(this, wxID_ANY, wxString(_("About")));
 163
 164         topsizer = new wxBoxSizer(wxVERTICAL);
 165
 166         html = new wxHtmlWindow(&dlg, wxID_ANY, wxDefaultPosition, wxSize(380, 160), wxHW_SCROLLBAR_NEVER);
 167         html -> SetBorders(0);
 168         html -> LoadPage(wxT("data/about.htm"));
 169         html -> SetSize(html -> GetInternalRepresentation() -> GetWidth(),
 170                         html -> GetInternalRepresentation() -> GetHeight());
 171
 172         topsizer -> Add(html, 1, wxALL, 10);
 173
 174 #if wxUSE_STATLINE
 175         topsizer -> Add(new wxStaticLine(&dlg, wxID_ANY), 0, wxEXPAND | wxLEFT | wxRIGHT, 10);
 176 #endif // wxUSE_STATLINE
 177
 178         wxButton *bu1 = new wxButton(&dlg, wxID_OK, _("OK"));
 179         bu1 -> SetDefault();
 180
 181         topsizer -> Add(bu1, 0, wxALL | wxALIGN_RIGHT, 15);
 182
 183         dlg.SetSizer(topsizer);
 184         topsizer -> Fit(&dlg);
 185
 186         dlg.ShowModal();
 187     }
 188