samples/html/widget/widget.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        widget.cpp
   3 // Purpose:     wxHtml testing example
   4 //              Demonstrates embedded controls
   5 /////////////////////////////////////////////////////////////////////////////
   6
   7 // For compilers that support precompilation, includes "wx/wx.h".
   8 #include "wx/wxprec.h"
   9
  10 #ifdef __BORLANDC__
  11     #pragma hdrstop
  12 #endif
  13
  14 // for all others, include the necessary headers (this file is usually all you
  15 // need because it includes almost all "standard" wxWidgets headers
  16 #ifndef WX_PRECOMP
  17     #include "wx/wx.h"
  18 #endif
  19
  20
  21 #include "wx/html/htmlwin.h"
  22
  23 #include "../../sample.xpm"
  24
  25
  26 /*
  27
  28
  29 TAG HANDER FOR 'MYBIND' TAG
  30
  31
  32 */
  33
  34 #include "wx/html/m_templ.h"
  35
  36
  37 TAG_HANDLER_BEGIN(MYBIND, "MYBIND")
  38
  39 TAG_HANDLER_PROC(tag)
  40 {
  41     wxWindow *wnd;
  42     int ax, ay;
  43     int fl = 0;
  44
  45     tag.ScanParam(wxT("X"), wxT("%i"), &ax);
  46     tag.ScanParam(wxT("Y"), wxT("%i"), &ay);
  47
  48     if (tag.HasParam(wxT("FLOAT"))) fl = ax;
  49
  50     wnd = new wxTextCtrl(m_WParser->GetWindow(), wxID_ANY, tag.GetParam(wxT("NAME")),
  51         wxPoint(0,0), wxSize(ax, ay), wxTE_MULTILINE);
  52
  53     wnd->Show(true);
  54
  55     m_WParser->GetContainer()->InsertCell(new wxHtmlWidgetCell(wnd, fl));
  56
  57     return false;
  58 }
  59
  60 TAG_HANDLER_END(MYBIND)
  61
  62
  63
  64 TAGS_MODULE_BEGIN(MyBind)
  65
  66     TAGS_MODULE_ADD(MYBIND)
  67
  68 TAGS_MODULE_END(MyBind)
  69
  70
  71 // ----------------------------------------------------------------------------
  72 // private classes
  73 // ----------------------------------------------------------------------------
  74
  75 // Define a new application type, each program should derive a class from wxApp
  76 class MyApp : public wxApp
  77 {
  78 public:
  79     // override base class virtuals
  80     // ----------------------------
  81
  82     // this one is called on application startup and is a good place for the app
  83     // initialization (doing it here and not in the ctor allows to have an error
  84     // return: if OnInit() returns false, the application terminates)
  85     virtual bool OnInit();
  86 };
  87
  88 // Define a new frame type: this is going to be our main frame
  89 class MyFrame : public wxFrame
  90 {
  91 public:
  92     // ctor(s)
  93     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  94
  95     // event handlers (these functions should _not_ be virtual)
  96     void OnQuit(wxCommandEvent& event);
  97     void OnBack(wxCommandEvent& event);
  98     void OnForward(wxCommandEvent& event);
  99
 100 private:
 101     // any class wishing to process wxWidgets events must use this macro
 102     DECLARE_EVENT_TABLE()
 103 };
 104
 105 // ----------------------------------------------------------------------------
 106 // constants
 107 // ----------------------------------------------------------------------------
 108
 109 // IDs for the controls and the menu commands
 110 enum
 111 {
 112     // menu items
 113     Minimal_Quit = 1,
 114     Minimal_Back,
 115     Minimal_Forward,
 116
 117     // controls start here (the numbers are, of course, arbitrary)
 118     Minimal_Text = 1000,
 119 };
 120
 121 // ----------------------------------------------------------------------------
 122 // event tables and other macros for wxWidgets
 123 // ----------------------------------------------------------------------------
 124
 125 // the event tables connect the wxWidgets events with the functions (event
 126 // handlers) which process them. It can be also done at run-time, but for the
 127 // simple menu events like this the static method is much simpler.
 128 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 129     EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
 130     EVT_MENU(Minimal_Back, MyFrame::OnBack)
 131     EVT_MENU(Minimal_Forward, MyFrame::OnForward)
 132 END_EVENT_TABLE()
 133
 134 // Create a new application object: this macro will allow wxWidgets to create
 135 // the application object during program execution (it's better than using a
 136 // static object for many reasons) and also declares the accessor function
 137 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 138 // not wxApp)
 139 IMPLEMENT_APP(MyApp)
 140
 141 // ============================================================================
 142 // implementation
 143 // ============================================================================
 144
 145 // ----------------------------------------------------------------------------
 146 // the application class
 147 // ----------------------------------------------------------------------------
 148
 149 // `Main program' equivalent: the program execution "starts" here
 150 bool MyApp::OnInit()
 151 {
 152     // Create the main application window
 153     MyFrame *frame = new MyFrame( _("wxHtmlWindow testing application"),
 154         wxDefaultPosition, wxSize(640, 480) );
 155
 156     // Show it and tell the application that it's our main window
 157     // @@@ what does it do exactly, in fact? is it necessary here?
 158     frame->Show(true);
 159     SetTopWindow(frame);
 160
 161     // success: wxApp::OnRun() will be called which will enter the main message
 162     // loop and the application will run. If we returned false here, the
 163     // application would exit immediately.
 164     return true;
 165 }
 166
 167 // ----------------------------------------------------------------------------
 168 // main frame
 169 // ----------------------------------------------------------------------------
 170
 171 wxHtmlWindow *html;
 172
 173 // frame constructor
 174 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 175 : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
 176 {
 177     // create a menu bar
 178     wxMenu *menuFile = new wxMenu;
 179     wxMenu *menuNav = new wxMenu;
 180
 181     menuFile->Append(Minimal_Quit, _("E&xit"));
 182     menuNav->Append(Minimal_Back, _("Go &BACK"));
 183     menuNav->Append(Minimal_Forward, _("Go &FORWARD"));
 184
 185     // now append the freshly created menu to the menu bar...
 186     wxMenuBar *menuBar = new wxMenuBar;
 187     menuBar->Append(menuFile, _("&File"));
 188     menuBar->Append(menuNav, _("&Navigate"));
 189
 190     // ... and attach this menu bar to the frame
 191     SetMenuBar(menuBar);
 192
 193     SetIcon(wxIcon(sample_xpm));
 194
 195 #if wxUSE_STATUSBAR
 196     CreateStatusBar(2);
 197 #endif // wxUSE_STATUSBAR
 198
 199     html = new wxHtmlWindow(this);
 200     html -> SetRelatedFrame(this, _("wxHTML Demo: '%s'"));
 201 #if wxUSE_STATUSBAR
 202     html -> SetRelatedStatusBar(1);
 203 #endif // wxUSE_STATUSBAR
 204     html -> LoadPage(wxT("start.htm"));
 205
 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 }