samples/html/about/about.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        about.cpp
   3 // Purpose:     wxHtml sample: about dialog test
   4 // Author:      ?
   5 // Modified by:
   6 // Created:     ?
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 // for all others, include the necessary headers (this file is usually all you
  20 // need because it includes almost all "standard" wxWidgets headers
  21 #ifndef WX_PRECOMP
  22     #include "wx/wx.h"
  23 #endif
  24
  25 #include "wx/image.h"
  26 #include "wx/imagpng.h"
  27 #include "wx/wxhtml.h"
  28 #include "wx/statline.h"
  29
  30 #ifndef wxHAS_IMAGES_IN_RESOURCES
  31     #include "../../sample.xpm"
  32 #endif
  33
  34
  35 // ----------------------------------------------------------------------------
  36 // private classes
  37 // ----------------------------------------------------------------------------
  38
  39
  40 // Define a new application type, each program should derive a class from wxApp
  41 class MyApp : public wxApp
  42 {
  43 public:
  44     // override base class virtuals
  45     // ----------------------------
  46
  47     // this one is called on application startup and is a good place for the app
  48     // initialization (doing it here and not in the ctor allows to have an error
  49     // return: if OnInit() returns false, the application terminates)
  50     virtual bool OnInit();
  51 };
  52
  53 // Define a new frame type: this is going to be our main frame
  54 class MyFrame : public wxFrame
  55 {
  56 public:
  57     // ctor(s)
  58     MyFrame(const wxString& title);
  59
  60     // event handlers (these functions should _not_ be virtual)
  61     void OnQuit(wxCommandEvent& event);
  62     void OnAbout(wxCommandEvent& event);
  63
  64 private:
  65     // any class wishing to process wxWidgets events must use this macro
  66     DECLARE_EVENT_TABLE()
  67 };
  68
  69 // ----------------------------------------------------------------------------
  70 // event tables and other macros for wxWidgets
  71 // ----------------------------------------------------------------------------
  72
  73 // the event tables connect the wxWidgets events with the functions (event
  74 // handlers) which process them. It can be also done at run-time, but for the
  75 // simple menu events like this the static method is much simpler.
  76 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  77    EVT_MENU(wxID_ABOUT, MyFrame::OnAbout)
  78    EVT_MENU(wxID_EXIT,  MyFrame::OnQuit)
  79 END_EVENT_TABLE()
  80
  81 // Create a new application object: this macro will allow wxWidgets to create
  82 // the application object during program execution (it's better than using a
  83 // static object for many reasons) and also declares the accessor function
  84 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
  85 // not wxApp)
  86 IMPLEMENT_APP(MyApp)
  87
  88 // ============================================================================
  89 // implementation
  90 // ============================================================================
  91
  92 // ----------------------------------------------------------------------------
  93 // the application class
  94 // ----------------------------------------------------------------------------
  95
  96 // `Main program' equivalent: the program execution "starts" here
  97 bool MyApp::OnInit()
  98 {
  99     if ( !wxApp::OnInit() )
 100         return false;
 101
 102     // we use a PNG image in our HTML page
 103     wxImage::AddHandler(new wxPNGHandler);
 104
 105     // create and show the main application window
 106     MyFrame *frame = new MyFrame(_("wxHtmlWindow testing application"));
 107     frame->Show();
 108
 109     // success: wxApp::OnRun() will be called which will enter the main message
 110     // loop and the application will run. If we returned false here, the
 111     // application would exit immediately.
 112     return true;
 113 }
 114
 115 // ----------------------------------------------------------------------------
 116 // main frame
 117 // ----------------------------------------------------------------------------
 118
 119 // frame constructor
 120 MyFrame::MyFrame(const wxString& title)
 121        : wxFrame((wxFrame *)NULL, wxID_ANY, title)
 122 {
 123     SetIcon(wxICON(sample));
 124
 125     // create a menu bar
 126     wxMenu *menuFile = new wxMenu;
 127
 128     menuFile->Append(wxID_ABOUT);
 129     menuFile->Append(wxID_EXIT);
 130
 131     // now append the freshly created menu to the menu bar...
 132     wxMenuBar *menuBar = new wxMenuBar;
 133     menuBar->Append(menuFile, _("&File"));
 134
 135     // ... and attach this menu bar to the frame
 136     SetMenuBar(menuBar);
 137 }
 138
 139
 140 // event handlers
 141
 142 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 143 {
 144     // true is to force the frame to close
 145     Close(true);
 146 }
 147
 148 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 149 {
 150     wxBoxSizer *topsizer;
 151     wxHtmlWindow *html;
 152     wxDialog dlg(this, wxID_ANY, wxString(_("About")));
 153
 154     topsizer = new wxBoxSizer(wxVERTICAL);
 155
 156     html = new wxHtmlWindow(&dlg, wxID_ANY, wxDefaultPosition, wxSize(380, 160), wxHW_SCROLLBAR_NEVER);
 157     html -> SetBorders(0);
 158     html -> LoadPage(wxT("data/about.htm"));
 159     html -> SetSize(html -> GetInternalRepresentation() -> GetWidth(),
 160                     html -> GetInternalRepresentation() -> GetHeight());
 161
 162     topsizer -> Add(html, 1, wxALL, 10);
 163
 164 #if wxUSE_STATLINE
 165     topsizer -> Add(new wxStaticLine(&dlg, wxID_ANY), 0, wxEXPAND | wxLEFT | wxRIGHT, 10);
 166 #endif // wxUSE_STATLINE
 167
 168     wxButton *bu1 = new wxButton(&dlg, wxID_OK, _("OK"));
 169     bu1 -> SetDefault();
 170
 171     topsizer -> Add(bu1, 0, wxALL | wxALIGN_RIGHT, 15);
 172
 173     dlg.SetSizer(topsizer);
 174     topsizer -> Fit(&dlg);
 175
 176     dlg.ShowModal();
 177 }
 178