samples/html/widget/widget.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        widget.cpp
   3 // Purpose:     wxHtml testing example
   4 //              Demonstrates embedded controls
   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 #include "../../sample.xpm"
  29
  30
  31 /*
  32
  33
  34 TAG HANDER FOR 'MYBIND' TAG
  35
  36
  37 */
  38
  39 #include "wx/html/m_templ.h"
  40
  41
  42 TAG_HANDLER_BEGIN(MYBIND, "MYBIND")
  43
  44 TAG_HANDLER_PROC(tag)
  45 {
  46     wxWindow *wnd;
  47     int ax, ay;
  48     int fl = 0;
  49
  50     tag.ScanParam(wxT("X"), wxT("%i"), &ax);
  51     tag.ScanParam(wxT("Y"), wxT("%i"), &ay);
  52
  53     if (tag.HasParam(wxT("FLOAT"))) fl = ax;
  54
  55     wnd = new wxTextCtrl(m_WParser->GetWindow(), wxID_ANY, tag.GetParam(wxT("NAME")),
  56         wxPoint(0,0), wxSize(ax, ay), wxTE_MULTILINE);
  57
  58     wnd->Show(true);
  59
  60     m_WParser->GetContainer()->InsertCell(new wxHtmlWidgetCell(wnd, fl));
  61
  62     return false;
  63 }
  64
  65 TAG_HANDLER_END(MYBIND)
  66
  67
  68
  69 TAGS_MODULE_BEGIN(MyBind)
  70
  71     TAGS_MODULE_ADD(MYBIND)
  72
  73 TAGS_MODULE_END(MyBind)
  74
  75
  76 // ----------------------------------------------------------------------------
  77 // private classes
  78 // ----------------------------------------------------------------------------
  79
  80 // Define a new application type, each program should derive a class from wxApp
  81 class MyApp : public wxApp
  82 {
  83 public:
  84     // override base class virtuals
  85     // ----------------------------
  86
  87     // this one is called on application startup and is a good place for the app
  88     // initialization (doing it here and not in the ctor allows to have an error
  89     // return: if OnInit() returns false, the application terminates)
  90     virtual bool OnInit();
  91 };
  92
  93 // Define a new frame type: this is going to be our main frame
  94 class MyFrame : public wxFrame
  95 {
  96 public:
  97     // ctor(s)
  98     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  99
 100     // event handlers (these functions should _not_ be virtual)
 101     void OnQuit(wxCommandEvent& event);
 102     void OnBack(wxCommandEvent& event);
 103     void OnForward(wxCommandEvent& event);
 104
 105 private:
 106     // any class wishing to process wxWidgets events must use this macro
 107     DECLARE_EVENT_TABLE()
 108 };
 109
 110 // ----------------------------------------------------------------------------
 111 // constants
 112 // ----------------------------------------------------------------------------
 113
 114 // IDs for the controls and the menu commands
 115 enum
 116 {
 117     // menu items
 118     Minimal_Quit = 1,
 119     Minimal_Back,
 120     Minimal_Forward,
 121
 122     // controls start here (the numbers are, of course, arbitrary)
 123     Minimal_Text = 1000,
 124 };
 125
 126 // ----------------------------------------------------------------------------
 127 // event tables and other macros for wxWidgets
 128 // ----------------------------------------------------------------------------
 129
 130 // the event tables connect the wxWidgets events with the functions (event
 131 // handlers) which process them. It can be also done at run-time, but for the
 132 // simple menu events like this the static method is much simpler.
 133 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 134     EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
 135     EVT_MENU(Minimal_Back, MyFrame::OnBack)
 136     EVT_MENU(Minimal_Forward, MyFrame::OnForward)
 137 END_EVENT_TABLE()
 138
 139 // Create a new application object: this macro will allow wxWidgets to create
 140 // the application object during program execution (it's better than using a
 141 // static object for many reasons) and also declares the accessor function
 142 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 143 // not wxApp)
 144 IMPLEMENT_APP(MyApp)
 145
 146 // ============================================================================
 147 // implementation
 148 // ============================================================================
 149
 150 // ----------------------------------------------------------------------------
 151 // the application class
 152 // ----------------------------------------------------------------------------
 153
 154 // `Main program' equivalent: the program execution "starts" here
 155 bool MyApp::OnInit()
 156 {
 157     // Create the main application window
 158     MyFrame *frame = new MyFrame( _("wxHtmlWindow testing application"),
 159         wxDefaultPosition, wxSize(640, 480) );
 160
 161     // Show it and tell the application that it's our main window
 162     // @@@ what does it do exactly, in fact? is it necessary here?
 163     frame->Show(true);
 164     SetTopWindow(frame);
 165
 166     // success: wxApp::OnRun() will be called which will enter the main message
 167     // loop and the application will run. If we returned false here, the
 168     // application would exit immediately.
 169     return true;
 170 }
 171
 172 // ----------------------------------------------------------------------------
 173 // main frame
 174 // ----------------------------------------------------------------------------
 175
 176 wxHtmlWindow *html;
 177
 178 // frame constructor
 179 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 180 : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
 181 {
 182     // create a menu bar
 183     wxMenu *menuFile = new wxMenu;
 184     wxMenu *menuNav = new wxMenu;
 185
 186     menuFile->Append(Minimal_Quit, _("E&xit"));
 187     menuNav->Append(Minimal_Back, _("Go &BACK"));
 188     menuNav->Append(Minimal_Forward, _("Go &FORWARD"));
 189
 190     // now append the freshly created menu to the menu bar...
 191     wxMenuBar *menuBar = new wxMenuBar;
 192     menuBar->Append(menuFile, _("&File"));
 193     menuBar->Append(menuNav, _("&Navigate"));
 194
 195     // ... and attach this menu bar to the frame
 196     SetMenuBar(menuBar);
 197
 198     SetIcon(wxIcon(sample_xpm));
 199
 200 #if wxUSE_STATUSBAR
 201     CreateStatusBar(2);
 202 #endif // wxUSE_STATUSBAR
 203
 204     html = new wxHtmlWindow(this);
 205     html -> SetRelatedFrame(this, _("wxHTML Demo: '%s'"));
 206 #if wxUSE_STATUSBAR
 207     html -> SetRelatedStatusBar(1);
 208 #endif // wxUSE_STATUSBAR
 209     html -> LoadPage(wxT("start.htm"));
 210
 211 }
 212
 213
 214 // event handlers
 215
 216 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 217 {
 218     // true is to force the frame to close
 219     Close(true);
 220 }
 221
 222 void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 223 {
 224     if (!html -> HistoryBack()) wxMessageBox(_("You reached prehistory era!"));
 225 }
 226
 227
 228 void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 229 {
 230     if (!html -> HistoryForward()) wxMessageBox(_("No more items in history!"));
 231 }