samples/html/widget/widget.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        zip.cpp
   3 // Purpose:     wxHtml sample: Demonstrates embedded controls
   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/html/htmlwin.h"
  26 #include "../../sample.xpm"
  27
  28
  29
  30 // ----------------------------------------------------------------------------
  31 // TAG HANDER FOR 'MYBIND' TAG
  32 // ----------------------------------------------------------------------------
  33
  34 #include "wx/html/m_templ.h"
  35
  36 TAG_HANDLER_BEGIN(MYBIND, "MYBIND")
  37
  38 TAG_HANDLER_PROC(tag)
  39 {
  40     wxWindow *wnd;
  41     int ax, ay;
  42     int fl = 0;
  43
  44     tag.ScanParam(wxT("X"), wxT("%i"), &ax);
  45     tag.ScanParam(wxT("Y"), wxT("%i"), &ay);
  46
  47     if (tag.HasParam(wxT("FLOAT"))) fl = ax;
  48
  49     wnd = new wxTextCtrl
  50               (
  51                 m_WParser->GetWindowInterface()->GetHTMLWindow(),
  52                 wxID_ANY,
  53                 tag.GetParam(wxT("NAME")),
  54                 wxPoint(0,0),
  55                 wxSize(ax, ay),
  56                 wxTE_MULTILINE
  57               );
  58
  59     wnd->Show(true);
  60
  61     m_WParser->GetContainer()->InsertCell(new wxHtmlWidgetCell(wnd, fl));
  62
  63     return false;
  64 }
  65
  66 TAG_HANDLER_END(MYBIND)
  67
  68
  69
  70 TAGS_MODULE_BEGIN(MyBind)
  71
  72     TAGS_MODULE_ADD(MYBIND)
  73
  74 TAGS_MODULE_END(MyBind)
  75
  76
  77 // ----------------------------------------------------------------------------
  78 // private classes
  79 // ----------------------------------------------------------------------------
  80
  81 // Define a new application type, each program should derive a class from wxApp
  82 class MyApp : public wxApp
  83 {
  84 public:
  85     // override base class virtuals
  86     // ----------------------------
  87
  88     // this one is called on application startup and is a good place for the app
  89     // initialization (doing it here and not in the ctor allows to have an error
  90     // return: if OnInit() returns false, the application terminates)
  91     virtual bool OnInit();
  92 };
  93
  94 // Define a new frame type: this is going to be our main frame
  95 class MyFrame : public wxFrame
  96 {
  97 public:
  98     // ctor(s)
  99     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
 100
 101     // event handlers (these functions should _not_ be virtual)
 102     void OnQuit(wxCommandEvent& event);
 103     void OnBack(wxCommandEvent& event);
 104     void OnForward(wxCommandEvent& event);
 105
 106 private:
 107     // any class wishing to process wxWidgets events must use this macro
 108     DECLARE_EVENT_TABLE()
 109 };
 110
 111 // ----------------------------------------------------------------------------
 112 // constants
 113 // ----------------------------------------------------------------------------
 114
 115 // IDs for the controls and the menu commands
 116 enum
 117 {
 118     // menu items
 119     Minimal_Quit = 1,
 120     Minimal_Back,
 121     Minimal_Forward,
 122
 123     // controls start here (the numbers are, of course, arbitrary)
 124     Minimal_Text = 1000
 125 };
 126
 127 // ----------------------------------------------------------------------------
 128 // event tables and other macros for wxWidgets
 129 // ----------------------------------------------------------------------------
 130
 131 // the event tables connect the wxWidgets events with the functions (event
 132 // handlers) which process them. It can be also done at run-time, but for the
 133 // simple menu events like this the static method is much simpler.
 134 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 135     EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
 136     EVT_MENU(Minimal_Back, MyFrame::OnBack)
 137     EVT_MENU(Minimal_Forward, MyFrame::OnForward)
 138 END_EVENT_TABLE()
 139
 140 // Create a new application object: this macro will allow wxWidgets to create
 141 // the application object during program execution (it's better than using a
 142 // static object for many reasons) and also declares the accessor function
 143 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 144 // not wxApp)
 145 IMPLEMENT_APP(MyApp)
 146
 147 // ============================================================================
 148 // implementation
 149 // ============================================================================
 150
 151 // ----------------------------------------------------------------------------
 152 // the application class
 153 // ----------------------------------------------------------------------------
 154
 155 // `Main program' equivalent: the program execution "starts" here
 156 bool MyApp::OnInit()
 157 {
 158     if ( !wxApp::OnInit() )
 159         return false;
 160
 161     // Create the main application window
 162     MyFrame *frame = new MyFrame( _("wxHtmlWindow testing application"),
 163         wxDefaultPosition, wxSize(640, 480) );
 164
 165     // Show it and tell the application that it's our main window
 166     // @@@ what does it do exactly, in fact? is it necessary here?
 167     frame->Show(true);
 168     SetTopWindow(frame);
 169
 170     // success: wxApp::OnRun() will be called which will enter the main message
 171     // loop and the application will run. If we returned false here, the
 172     // application would exit immediately.
 173     return true;
 174 }
 175
 176 // ----------------------------------------------------------------------------
 177 // main frame
 178 // ----------------------------------------------------------------------------
 179
 180 wxHtmlWindow *html;
 181
 182 // frame constructor
 183 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 184     : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
 185 {
 186     SetIcon(wxICON(sample));
 187
 188     // create a menu bar
 189     wxMenu *menuFile = new wxMenu;
 190     wxMenu *menuNav = new wxMenu;
 191
 192     menuFile->Append(Minimal_Quit, _("E&xit"));
 193     menuNav->Append(Minimal_Back, _("Go &BACK"));
 194     menuNav->Append(Minimal_Forward, _("Go &FORWARD"));
 195
 196     // now append the freshly created menu to the menu bar...
 197     wxMenuBar *menuBar = new wxMenuBar;
 198     menuBar->Append(menuFile, _("&File"));
 199     menuBar->Append(menuNav, _("&Navigate"));
 200
 201     // ... and attach this menu bar to the frame
 202     SetMenuBar(menuBar);
 203
 204     SetIcon(wxIcon(sample_xpm));
 205
 206 #if wxUSE_STATUSBAR
 207     CreateStatusBar(2);
 208 #endif // wxUSE_STATUSBAR
 209
 210     html = new wxHtmlWindow(this);
 211     html -> SetRelatedFrame(this, _("wxHTML Demo: '%s'"));
 212 #if wxUSE_STATUSBAR
 213     html -> SetRelatedStatusBar(1);
 214 #endif // wxUSE_STATUSBAR
 215     html -> LoadPage(wxT("start.htm"));
 216
 217 }
 218
 219
 220 // event handlers
 221
 222 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 223 {
 224     // true is to force the frame to close
 225     Close(true);
 226 }
 227
 228 void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 229 {
 230     if (!html -> HistoryBack()) wxMessageBox(_("You reached prehistory era!"));
 231 }
 232
 233
 234 void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 235 {
 236     if (!html -> HistoryForward()) wxMessageBox(_("No more items in history!"));
 237 }