samples/html/widget/widget.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        virtua;.cpp
   3 // Purpose:     wxHtml testing example
   4 //              demonstrates virtual file systems feature
   5 /////////////////////////////////////////////////////////////////////////////
   6
   7 #if defined(__GNUG__) && !defined(__APPLE__)
   8     #pragma implementation "test.cpp"
   9     #pragma interface "test.cpp"
  10 #endif
  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
  26 #include "wx/html/htmlwin.h"
  27
  28
  29 /*
  30
  31
  32 TAG HANDER FOR 'MYBIND' TAG
  33
  34
  35 */
  36
  37 #include "wx/html/m_templ.h"
  38
  39
  40 TAG_HANDLER_BEGIN(MYBIND, "MYBIND")
  41
  42 TAG_HANDLER_PROC(tag)
  43 {
  44     wxWindow *wnd;
  45     int ax, ay;
  46     int fl = 0;
  47
  48     tag.ScanParam(wxT("X"), wxT("%i"), &ax);
  49     tag.ScanParam(wxT("Y"), wxT("%i"), &ay);
  50
  51     if (tag.HasParam(wxT("FLOAT"))) fl = ax;
  52
  53     wnd = new wxTextCtrl(m_WParser->GetWindow(), wxID_ANY, tag.GetParam(wxT("NAME")),
  54         wxPoint(0,0), wxSize(ax, ay), wxTE_MULTILINE);
  55
  56     wnd->Show(true);
  57
  58     m_WParser->GetContainer()->InsertCell(new wxHtmlWidgetCell(wnd, fl));
  59
  60     return false;
  61 }
  62
  63 TAG_HANDLER_END(MYBIND)
  64
  65
  66
  67 TAGS_MODULE_BEGIN(MyBind)
  68
  69     TAGS_MODULE_ADD(MYBIND)
  70
  71 TAGS_MODULE_END(MyBind)
  72
  73
  74 // ----------------------------------------------------------------------------
  75 // private classes
  76 // ----------------------------------------------------------------------------
  77
  78 // Define a new application type, each program should derive a class from wxApp
  79 class MyApp : public wxApp
  80 {
  81 public:
  82     // override base class virtuals
  83     // ----------------------------
  84
  85     // this one is called on application startup and is a good place for the app
  86     // initialization (doing it here and not in the ctor allows to have an error
  87     // return: if OnInit() returns false, the application terminates)
  88     virtual bool OnInit();
  89 };
  90
  91 // Define a new frame type: this is going to be our main frame
  92 class MyFrame : public wxFrame
  93 {
  94 public:
  95     // ctor(s)
  96     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  97
  98     // event handlers (these functions should _not_ be virtual)
  99     void OnQuit(wxCommandEvent& event);
 100     void OnBack(wxCommandEvent& event);
 101     void OnForward(wxCommandEvent& event);
 102
 103 private:
 104     // any class wishing to process wxWidgets events must use this macro
 105     DECLARE_EVENT_TABLE()
 106 };
 107
 108 // ----------------------------------------------------------------------------
 109 // constants
 110 // ----------------------------------------------------------------------------
 111
 112 // IDs for the controls and the menu commands
 113 enum
 114 {
 115     // menu items
 116     Minimal_Quit = 1,
 117     Minimal_Back,
 118     Minimal_Forward,
 119
 120     // controls start here (the numbers are, of course, arbitrary)
 121     Minimal_Text = 1000,
 122 };
 123
 124 // ----------------------------------------------------------------------------
 125 // event tables and other macros for wxWidgets
 126 // ----------------------------------------------------------------------------
 127
 128 // the event tables connect the wxWidgets events with the functions (event
 129 // handlers) which process them. It can be also done at run-time, but for the
 130 // simple menu events like this the static method is much simpler.
 131 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 132     EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
 133     EVT_MENU(Minimal_Back, MyFrame::OnBack)
 134     EVT_MENU(Minimal_Forward, MyFrame::OnForward)
 135 END_EVENT_TABLE()
 136
 137 // Create a new application object: this macro will allow wxWidgets to create
 138 // the application object during program execution (it's better than using a
 139 // static object for many reasons) and also declares the accessor function
 140 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 141 // not wxApp)
 142 IMPLEMENT_APP(MyApp)
 143
 144 // ============================================================================
 145 // implementation
 146 // ============================================================================
 147
 148 // ----------------------------------------------------------------------------
 149 // the application class
 150 // ----------------------------------------------------------------------------
 151
 152 // `Main program' equivalent: the program execution "starts" here
 153 bool MyApp::OnInit()
 154 {
 155     // Create the main application window
 156     MyFrame *frame = new MyFrame( _("wxHtmlWindow testing application"),
 157         wxDefaultPosition, wxSize(640, 480) );
 158
 159     // Show it and tell the application that it's our main window
 160     // @@@ what does it do exactly, in fact? is it necessary here?
 161     frame->Show(true);
 162     SetTopWindow(frame);
 163
 164     // success: wxApp::OnRun() will be called which will enter the main message
 165     // loop and the application will run. If we returned false here, the
 166     // application would exit immediately.
 167     return true;
 168 }
 169
 170 // ----------------------------------------------------------------------------
 171 // main frame
 172 // ----------------------------------------------------------------------------
 173
 174 wxHtmlWindow *html;
 175
 176 // frame constructor
 177 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 178 : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
 179 {
 180     // create a menu bar
 181     wxMenu *menuFile = new wxMenu;
 182     wxMenu *menuNav = new wxMenu;
 183
 184     menuFile->Append(Minimal_Quit, _("E&xit"));
 185     menuNav->Append(Minimal_Back, _("Go &BACK"));
 186     menuNav->Append(Minimal_Forward, _("Go &FORWARD"));
 187
 188     // now append the freshly created menu to the menu bar...
 189     wxMenuBar *menuBar = new wxMenuBar;
 190     menuBar->Append(menuFile, _("&File"));
 191     menuBar->Append(menuNav, _("&Navigate"));
 192
 193     // ... and attach this menu bar to the frame
 194     SetMenuBar(menuBar);
 195
 196 #if wxUSE_STATUSBAR
 197     CreateStatusBar(2);
 198 #endif // wxUSE_STATUSBAR
 199
 200     html = new wxHtmlWindow(this);
 201     html -> SetRelatedFrame(this, _("VFS Demo: '%s'"));
 202 #if wxUSE_STATUSBAR
 203     html -> SetRelatedStatusBar(1);
 204 #endif // wxUSE_STATUSBAR
 205     html -> LoadPage(wxT("start.htm"));
 206 }
 207
 208
 209 // event handlers
 210
 211 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 212 {
 213     // true is to force the frame to close
 214     Close(true);
 215 }
 216
 217 void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 218 {
 219     if (!html -> HistoryBack()) wxMessageBox(_("You reached prehistory era!"));
 220 }
 221
 222
 223 void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 224 {
 225     if (!html -> HistoryForward()) wxMessageBox(_("No more items in history!"));
 226 }