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
  51               (
  52                 m_WParser->GetWindowInterface()->GetHTMLWindow(),
  53                 wxID_ANY,
  54                 tag.GetParam(wxT("NAME")),
  55                 wxPoint(0,0),
  56                 wxSize(ax, ay),
  57                 wxTE_MULTILINE
  58               );
  59
  60     wnd->Show(true);
  61
  62     m_WParser->GetContainer()->InsertCell(new wxHtmlWidgetCell(wnd, fl));
  63
  64     return false;
  65 }
  66
  67 TAG_HANDLER_END(MYBIND)
  68
  69
  70
  71 TAGS_MODULE_BEGIN(MyBind)
  72
  73     TAGS_MODULE_ADD(MYBIND)
  74
  75 TAGS_MODULE_END(MyBind)
  76
  77
  78 // ----------------------------------------------------------------------------
  79 // private classes
  80 // ----------------------------------------------------------------------------
  81
  82 // Define a new application type, each program should derive a class from wxApp
  83 class MyApp : public wxApp
  84 {
  85 public:
  86     // override base class virtuals
  87     // ----------------------------
  88
  89     // this one is called on application startup and is a good place for the app
  90     // initialization (doing it here and not in the ctor allows to have an error
  91     // return: if OnInit() returns false, the application terminates)
  92     virtual bool OnInit();
  93 };
  94
  95 // Define a new frame type: this is going to be our main frame
  96 class MyFrame : public wxFrame
  97 {
  98 public:
  99     // ctor(s)
 100     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
 101
 102     // event handlers (these functions should _not_ be virtual)
 103     void OnQuit(wxCommandEvent& event);
 104     void OnBack(wxCommandEvent& event);
 105     void OnForward(wxCommandEvent& event);
 106
 107 private:
 108     // any class wishing to process wxWidgets events must use this macro
 109     DECLARE_EVENT_TABLE()
 110 };
 111
 112 // ----------------------------------------------------------------------------
 113 // constants
 114 // ----------------------------------------------------------------------------
 115
 116 // IDs for the controls and the menu commands
 117 enum
 118 {
 119     // menu items
 120     Minimal_Quit = 1,
 121     Minimal_Back,
 122     Minimal_Forward,
 123
 124     // controls start here (the numbers are, of course, arbitrary)
 125     Minimal_Text = 1000,
 126 };
 127
 128 // ----------------------------------------------------------------------------
 129 // event tables and other macros for wxWidgets
 130 // ----------------------------------------------------------------------------
 131
 132 // the event tables connect the wxWidgets events with the functions (event
 133 // handlers) which process them. It can be also done at run-time, but for the
 134 // simple menu events like this the static method is much simpler.
 135 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 136     EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
 137     EVT_MENU(Minimal_Back, MyFrame::OnBack)
 138     EVT_MENU(Minimal_Forward, MyFrame::OnForward)
 139 END_EVENT_TABLE()
 140
 141 // Create a new application object: this macro will allow wxWidgets to create
 142 // the application object during program execution (it's better than using a
 143 // static object for many reasons) and also declares the accessor function
 144 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 145 // not wxApp)
 146 IMPLEMENT_APP(MyApp)
 147
 148 // ============================================================================
 149 // implementation
 150 // ============================================================================
 151
 152 // ----------------------------------------------------------------------------
 153 // the application class
 154 // ----------------------------------------------------------------------------
 155
 156 // `Main program' equivalent: the program execution "starts" here
 157 bool MyApp::OnInit()
 158 {
 159     // Create the main application window
 160     MyFrame *frame = new MyFrame( _("wxHtmlWindow testing application"),
 161         wxDefaultPosition, wxSize(640, 480) );
 162
 163     // Show it and tell the application that it's our main window
 164     // @@@ what does it do exactly, in fact? is it necessary here?
 165     frame->Show(true);
 166     SetTopWindow(frame);
 167
 168     // success: wxApp::OnRun() will be called which will enter the main message
 169     // loop and the application will run. If we returned false here, the
 170     // application would exit immediately.
 171     return true;
 172 }
 173
 174 // ----------------------------------------------------------------------------
 175 // main frame
 176 // ----------------------------------------------------------------------------
 177
 178 wxHtmlWindow *html;
 179
 180 // frame constructor
 181 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 182 : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
 183 {
 184     // create a menu bar
 185     wxMenu *menuFile = new wxMenu;
 186     wxMenu *menuNav = new wxMenu;
 187
 188     menuFile->Append(Minimal_Quit, _("E&xit"));
 189     menuNav->Append(Minimal_Back, _("Go &BACK"));
 190     menuNav->Append(Minimal_Forward, _("Go &FORWARD"));
 191
 192     // now append the freshly created menu to the menu bar...
 193     wxMenuBar *menuBar = new wxMenuBar;
 194     menuBar->Append(menuFile, _("&File"));
 195     menuBar->Append(menuNav, _("&Navigate"));
 196
 197     // ... and attach this menu bar to the frame
 198     SetMenuBar(menuBar);
 199
 200     SetIcon(wxIcon(sample_xpm));
 201
 202 #if wxUSE_STATUSBAR
 203     CreateStatusBar(2);
 204 #endif // wxUSE_STATUSBAR
 205
 206     html = new wxHtmlWindow(this);
 207     html -> SetRelatedFrame(this, _("wxHTML Demo: '%s'"));
 208 #if wxUSE_STATUSBAR
 209     html -> SetRelatedStatusBar(1);
 210 #endif // wxUSE_STATUSBAR
 211     html -> LoadPage(wxT("start.htm"));
 212
 213 }
 214
 215
 216 // event handlers
 217
 218 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 219 {
 220     // true is to force the frame to close
 221     Close(true);
 222 }
 223
 224 void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 225 {
 226     if (!html -> HistoryBack()) wxMessageBox(_("You reached prehistory era!"));
 227 }
 228
 229
 230 void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 231 {
 232     if (!html -> HistoryForward()) wxMessageBox(_("No more items in history!"));
 233 }