samples/web/web.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        web.cpp
   3 // Purpose:     wxWebView sample
   4 // Author:      Marianne Gagnon
   5 // Id:          $Id$
   6 // Copyright:   (c) 2010 Marianne Gagnon, Steven Lamerton
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 // For compilers that support precompilation, includes "wx/wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21 #ifndef WX_PRECOMP
  22     #include "wx/wx.h"
  23 #endif
  24
  25 #include <wx/artprov.h>
  26 #include <wx/notifmsg.h>
  27 #include <wx/settings.h>
  28 #include <wx/webview.h>
  29 #include <wx/infobar.h>
  30
  31 #if !defined(__WXMSW__) && !defined(__WXPM__)
  32     #include "../sample.xpm"
  33 #endif
  34
  35 #if wxUSE_STC
  36 #include <wx/stc/stc.h>
  37 #else
  38 #error "wxStyledTextControl is needed by this sample"
  39 #endif
  40
  41 #include "stop.xpm"
  42 #include "refresh.xpm"
  43 #include "wxlogo.xpm"
  44
  45 class WebApp : public wxApp
  46 {
  47 public:
  48     virtual bool OnInit();
  49 };
  50
  51 class WebFrame : public wxFrame
  52 {
  53 public:
  54     WebFrame();
  55
  56     void OnAnimationTimer(wxTimerEvent& evt);
  57     void UpdateState();
  58     void OnUrl(wxCommandEvent& evt);
  59     void OnBack(wxCommandEvent& evt);
  60     void OnForward(wxCommandEvent& evt);
  61     void OnStop(wxCommandEvent& evt);
  62     void OnReload(wxCommandEvent& evt);
  63     void OnNavigationRequest(wxWebNavigationEvent& evt);
  64     void OnNavigationComplete(wxWebNavigationEvent& evt);
  65     void OnDocumentLoaded(wxWebNavigationEvent& evt);
  66     void OnNewWindow(wxWebNavigationEvent& evt);
  67     void OnViewSourceRequest(wxCommandEvent& evt);
  68     void OnToolsClicked(wxCommandEvent& evt);
  69     void OnSetZoom(wxCommandEvent& evt);
  70     void OnError(wxWebNavigationEvent& evt);
  71     void OnPrint(wxCommandEvent& evt);
  72
  73 private:
  74     wxTextCtrl* m_url;
  75     wxWebView* m_browser;
  76
  77     wxToolBar* m_toolbar;
  78     wxToolBarToolBase* m_toolbar_back;
  79     wxToolBarToolBase* m_toolbar_forward;
  80     wxToolBarToolBase* m_toolbar_stop;
  81     wxToolBarToolBase* m_toolbar_reload;
  82     wxToolBarToolBase* m_toolbar_tools;
  83
  84     wxMenu* m_tools_menu;
  85     wxMenuItem* m_tools_tiny;
  86     wxMenuItem* m_tools_small;
  87     wxMenuItem* m_tools_medium;
  88     wxMenuItem* m_tools_large;
  89     wxMenuItem* m_tools_largest;
  90     wxMenuItem* m_tools_handle_navigation;
  91     wxMenuItem* m_tools_handle_new_window;
  92
  93     wxTimer* m_timer;
  94     int m_animation_angle;
  95
  96     wxInfoBar *m_info;
  97     wxStaticText* m_info_text;
  98 };
  99
 100 class SourceViewDialog : public wxDialog
 101 {
 102 public:
 103     SourceViewDialog(wxWindow* parent, wxString source);
 104 };
 105
 106 IMPLEMENT_APP(WebApp)
 107
 108 // ============================================================================
 109 // implementation
 110 // ============================================================================
 111
 112 bool WebApp::OnInit()
 113 {
 114     if ( !wxApp::OnInit() )
 115         return false;
 116
 117     WebFrame *frame = new WebFrame();
 118     frame->Show();
 119
 120     return true;
 121 }
 122
 123 WebFrame::WebFrame() : wxFrame(NULL, wxID_ANY, "wxWebView Sample")
 124 {
 125     // set the frame icon
 126     SetIcon(wxICON(sample));
 127     SetTitle("wxWebView Sample");
 128
 129     m_timer = NULL;
 130     m_animation_angle = 0;
 131
 132
 133     wxBoxSizer* topsizer = new wxBoxSizer(wxVERTICAL);
 134
 135     // Create the toolbar
 136     m_toolbar = CreateToolBar(wxTB_TEXT);
 137     m_toolbar->SetToolBitmapSize(wxSize(32, 32));
 138
 139     wxBitmap back = wxArtProvider::GetBitmap(wxART_GO_BACK , wxART_TOOLBAR);
 140     wxBitmap forward = wxArtProvider::GetBitmap(wxART_GO_FORWARD , wxART_TOOLBAR);
 141     #ifdef __WXGTK__
 142         wxBitmap stop = wxArtProvider::GetBitmap("gtk-stop", wxART_TOOLBAR);
 143     #else
 144         wxBitmap stop = wxBitmap(stop_xpm);
 145     #endif
 146     #ifdef __WXGTK__
 147         wxBitmap refresh = wxArtProvider::GetBitmap("gtk-refresh", wxART_TOOLBAR);
 148     #else
 149         wxBitmap refresh = wxBitmap(refresh_xpm);
 150     #endif
 151
 152     m_toolbar_back = m_toolbar->AddTool(wxID_ANY, _("Back"), back);
 153     m_toolbar_forward = m_toolbar->AddTool(wxID_ANY, _("Forward"), forward);
 154     m_toolbar_stop = m_toolbar->AddTool(wxID_ANY, _("Stop"), stop);
 155     m_toolbar_reload = m_toolbar->AddTool(wxID_ANY, _("Reload"),  refresh);
 156     m_url = new wxTextCtrl(m_toolbar, wxID_ANY, wxT(""),  wxDefaultPosition, wxSize(400, -1), wxTE_PROCESS_ENTER );
 157     m_toolbar->AddControl(m_url, _("URL"));
 158     m_toolbar_tools = m_toolbar->AddTool(wxID_ANY, _("Menu"), wxBitmap(wxlogo_xpm));
 159
 160     m_toolbar->Realize();
 161
 162     // Create the info panel
 163     m_info = new wxInfoBar(this);
 164     topsizer->Add(m_info, wxSizerFlags().Expand());
 165
 166     // Create the webview
 167     m_browser = wxWebView::New(this, wxID_ANY, "http://www.wxwidgets.org");
 168     topsizer->Add(m_browser, wxSizerFlags().Expand().Proportion(1));
 169
 170     SetSizer(topsizer);
 171
 172     // Create a log window
 173     new wxLogWindow(this, _("Logging"));
 174
 175     // Create the Tools menu
 176     m_tools_menu = new wxMenu();
 177     wxMenuItem* print = m_tools_menu->Append(wxID_ANY , _("Print"));
 178     wxMenuItem* viewSource = m_tools_menu->Append(wxID_ANY , _("View Source"));
 179     m_tools_menu->AppendSeparator();
 180     m_tools_tiny = m_tools_menu->AppendCheckItem(wxID_ANY, _("Tiny"));
 181     m_tools_small = m_tools_menu->AppendCheckItem(wxID_ANY, _("Small"));
 182     m_tools_medium = m_tools_menu->AppendCheckItem(wxID_ANY, _("Medium"));
 183     m_tools_large = m_tools_menu->AppendCheckItem(wxID_ANY, _("Large"));
 184     m_tools_largest = m_tools_menu->AppendCheckItem(wxID_ANY, _("Largest"));
 185     m_tools_menu->AppendSeparator();
 186     m_tools_handle_navigation = m_tools_menu->AppendCheckItem(wxID_ANY, _("Handle Navigation"));
 187     m_tools_handle_new_window = m_tools_menu->AppendCheckItem(wxID_ANY, _("Handle New Windows"));
 188
 189     //By default we want to handle naigation and new windows
 190     m_tools_handle_navigation->Check();
 191     m_tools_handle_new_window->Check();
 192
 193
 194     // Connect the toolbar events
 195     Connect(m_toolbar_back->GetId(), wxEVT_COMMAND_TOOL_CLICKED,
 196             wxCommandEventHandler(WebFrame::OnBack), NULL, this );
 197     Connect(m_toolbar_forward->GetId(), wxEVT_COMMAND_TOOL_CLICKED,
 198             wxCommandEventHandler(WebFrame::OnForward), NULL, this );
 199     Connect(m_toolbar_stop->GetId(), wxEVT_COMMAND_TOOL_CLICKED,
 200             wxCommandEventHandler(WebFrame::OnStop), NULL, this );
 201     Connect(m_toolbar_reload->GetId(), wxEVT_COMMAND_TOOL_CLICKED,
 202             wxCommandEventHandler(WebFrame::OnReload),NULL, this );
 203     Connect(m_toolbar_tools->GetId(), wxEVT_COMMAND_TOOL_CLICKED,
 204             wxCommandEventHandler(WebFrame::OnToolsClicked), NULL, this );
 205
 206     Connect(m_url->GetId(), wxEVT_COMMAND_TEXT_ENTER,
 207             wxCommandEventHandler(WebFrame::OnUrl), NULL, this );
 208
 209     // Connect the webview events
 210     Connect(m_browser->GetId(), wxEVT_COMMAND_WEB_VIEW_NAVIGATING,
 211             wxWebNavigationEventHandler(WebFrame::OnNavigationRequest), NULL, this);
 212     Connect(m_browser->GetId(), wxEVT_COMMAND_WEB_VIEW_NAVIGATED,
 213             wxWebNavigationEventHandler(WebFrame::OnNavigationComplete), NULL, this);
 214     Connect(m_browser->GetId(), wxEVT_COMMAND_WEB_VIEW_LOADED,
 215             wxWebNavigationEventHandler(WebFrame::OnDocumentLoaded), NULL, this);
 216     Connect(m_browser->GetId(), wxEVT_COMMAND_WEB_VIEW_ERROR,
 217             wxWebNavigationEventHandler(WebFrame::OnError), NULL, this);
 218     Connect(m_browser->GetId(), wxEVT_COMMAND_WEB_VIEW_NEWWINDOW,
 219             wxWebNavigationEventHandler(WebFrame::OnNewWindow), NULL, this);
 220
 221     // Connect the menu events
 222     Connect(viewSource->GetId(), wxEVT_COMMAND_MENU_SELECTED,
 223            wxCommandEventHandler(WebFrame::OnViewSourceRequest),  NULL, this );
 224     Connect(print->GetId(), wxEVT_COMMAND_MENU_SELECTED,
 225             wxCommandEventHandler(WebFrame::OnPrint),  NULL, this );
 226     Connect(m_tools_tiny->GetId(), wxEVT_COMMAND_MENU_SELECTED,
 227             wxCommandEventHandler(WebFrame::OnSetZoom),  NULL, this );
 228     Connect(m_tools_small->GetId(), wxEVT_COMMAND_MENU_SELECTED,
 229             wxCommandEventHandler(WebFrame::OnSetZoom),  NULL, this );
 230     Connect(m_tools_medium->GetId(), wxEVT_COMMAND_MENU_SELECTED,
 231             wxCommandEventHandler(WebFrame::OnSetZoom),  NULL, this );
 232     Connect(m_tools_large->GetId(), wxEVT_COMMAND_MENU_SELECTED,
 233             wxCommandEventHandler(WebFrame::OnSetZoom),  NULL, this );
 234     Connect(m_tools_largest->GetId(), wxEVT_COMMAND_MENU_SELECTED,
 235             wxCommandEventHandler(WebFrame::OnSetZoom),  NULL, this );
 236 }
 237
 238 void WebFrame::OnAnimationTimer(wxTimerEvent& evt)
 239 {
 240     m_animation_angle += 15;
 241     if (m_animation_angle > 360) m_animation_angle -= 360;
 242
 243     wxBitmap image(32, 32);
 244     {
 245         wxMemoryDC dc;
 246         dc.SelectObject(image);
 247         dc.SetBackground(wxBrush(wxColour(255,0,255)));
 248         dc.Clear();
 249
 250         if (m_animation_angle >= 0 && m_animation_angle <= 180)
 251         {
 252             dc.SetBrush(*wxYELLOW_BRUSH);
 253             dc.SetPen(*wxYELLOW_PEN);
 254             dc.DrawCircle(16 - int(sin(m_animation_angle*0.01745f /* convert to radians */)*14.0f),
 255             16 + int(cos(m_animation_angle*0.01745f /* convert to radians */)*14.0f), 3 );
 256         }
 257
 258         dc.DrawBitmap(wxBitmap(wxlogo_xpm), 0, 0, true);
 259
 260         if (m_animation_angle > 180)
 261         {
 262             dc.SetBrush(*wxYELLOW_BRUSH);
 263             dc.SetPen(*wxYELLOW_PEN);
 264             dc.DrawCircle(16 - int(sin(m_animation_angle*0.01745f /* convert to radians */)*14.0f),
 265             16 + int(cos(m_animation_angle*0.01745f /* convert to radians */)*14.0f), 3 );
 266         }
 267     }
 268     image.SetMask(new wxMask(image, wxColour(255,0,255)));
 269     m_toolbar->SetToolNormalBitmap(m_toolbar_tools->GetId(), image);
 270 }
 271
 272 /**
 273   * Method that retrieves the current state from the web control and updates the GUI
 274   * the reflect this current state.
 275   */
 276 void WebFrame::UpdateState()
 277 {
 278     m_toolbar->EnableTool( m_toolbar_back->GetId(), m_browser->CanGoBack() );
 279     m_toolbar->EnableTool( m_toolbar_forward->GetId(), m_browser->CanGoForward() );
 280
 281     if (m_browser->IsBusy())
 282     {
 283         if (m_timer == NULL)
 284         {
 285             m_timer = new wxTimer(this);
 286             this->Connect(wxEVT_TIMER, wxTimerEventHandler(WebFrame::OnAnimationTimer), NULL, this);
 287         }
 288         m_timer->Start(100); // start animation timer
 289
 290         m_toolbar->EnableTool( m_toolbar_stop->GetId(), true );
 291     }
 292     else
 293     {
 294         if (m_timer != NULL) m_timer->Stop(); // stop animation timer
 295         m_toolbar->SetToolNormalBitmap(m_toolbar_tools->GetId(), wxBitmap(wxlogo_xpm));
 296         m_toolbar->EnableTool( m_toolbar_stop->GetId(), false );
 297     }
 298
 299     SetTitle( m_browser->GetCurrentTitle() );
 300     m_url->SetValue( m_browser->GetCurrentURL() );
 301 }
 302
 303 /**
 304   * Callback invoked when user entered an URL and pressed enter
 305   */
 306 void WebFrame::OnUrl(wxCommandEvent& evt)
 307 {
 308     m_browser->LoadUrl( m_url->GetValue() );
 309     UpdateState();
 310 }
 311
 312 /**
 313     * Callback invoked when user pressed the "back" button
 314     */
 315 void WebFrame::OnBack(wxCommandEvent& evt)
 316 {
 317     m_browser->GoBack();
 318     UpdateState();
 319 }
 320
 321 /**
 322   * Callback invoked when user pressed the "forward" button
 323   */
 324 void WebFrame::OnForward(wxCommandEvent& evt)
 325 {
 326     m_browser->GoForward();
 327     UpdateState();
 328 }
 329
 330 /**
 331   * Callback invoked when user pressed the "stop" button
 332   */
 333 void WebFrame::OnStop(wxCommandEvent& evt)
 334 {
 335     m_browser->Stop();
 336     UpdateState();
 337 }
 338
 339 /**
 340   * Callback invoked when user pressed the "reload" button
 341   */
 342 void WebFrame::OnReload(wxCommandEvent& evt)
 343 {
 344     m_browser->Reload();
 345     UpdateState();
 346 }
 347
 348 /**
 349   * Callback invoked when there is a request to load a new page (for instance
 350   * when the user clicks a link)
 351   */
 352 void WebFrame::OnNavigationRequest(wxWebNavigationEvent& evt)
 353 {
 354     wxLogMessage("%s", "Navigation request to '" + evt.GetHref() + "' (target='" +
 355     evt.GetTarget() + "')");
 356
 357     wxASSERT(m_browser->IsBusy());
 358
 359     //If we don't want to handle navigation then veto the event and navigation
 360     //will not take place
 361     if(!m_tools_handle_navigation->IsChecked())
 362         evt.Veto();
 363
 364     UpdateState();
 365 }
 366
 367 /**
 368   * Callback invoked when a navigation request was accepted
 369   */
 370 void WebFrame::OnNavigationComplete(wxWebNavigationEvent& evt)
 371 {
 372     wxLogMessage("%s", "Navigation complete; url='" + evt.GetHref() + "'");
 373     UpdateState();
 374 }
 375
 376 /**
 377   * Callback invoked when a page is finished loading
 378   */
 379 void WebFrame::OnDocumentLoaded(wxWebNavigationEvent& evt)
 380 {
 381     wxLogMessage("%s", "Document loaded; url='" + evt.GetHref() + "'");
 382     UpdateState();
 383 }
 384
 385 /**
 386   * On new window, we veto to stop extra windows appearing
 387   */
 388 void WebFrame::OnNewWindow(wxWebNavigationEvent& evt)
 389 {
 390     wxLogMessage("%s", "New window; url='" + evt.GetHref() + "'");
 391
 392     //If we handle new window events then just load them in this window as we
 393     //are a single window browser
 394     if(m_tools_handle_new_window->IsChecked())
 395         m_browser->LoadUrl(evt.GetHref());
 396
 397     //We always veto because we handle the event, otherwise under windows a new
 398     //internet explorer windowis created
 399     evt.Veto();
 400
 401     UpdateState();
 402 }
 403
 404 /**
 405   * Invoked when user selects the "View Source" menu item
 406   */
 407 void WebFrame::OnViewSourceRequest(wxCommandEvent& evt)
 408 {
 409     SourceViewDialog dlg(this, m_browser->GetPageSource());
 410     dlg.ShowModal();
 411 }
 412
 413 /**
 414   * Invoked when user selects the "Menu" item
 415   */
 416 void WebFrame::OnToolsClicked(wxCommandEvent& evt)
 417 {
 418     if(m_browser->GetCurrentURL() == "")
 419         return;
 420
 421     m_tools_tiny->Check(false);
 422     m_tools_small->Check(false);
 423     m_tools_medium->Check(false);
 424     m_tools_large->Check(false);
 425     m_tools_largest->Check(false);
 426
 427     wxWebViewZoom zoom = m_browser->GetZoom();
 428     switch (zoom)
 429     {
 430     case wxWEB_VIEW_ZOOM_TINY:
 431         m_tools_tiny->Check();
 432         break;
 433     case wxWEB_VIEW_ZOOM_SMALL:
 434         m_tools_small->Check();
 435         break;
 436     case wxWEB_VIEW_ZOOM_MEDIUM:
 437         m_tools_medium->Check();
 438         break;
 439     case wxWEB_VIEW_ZOOM_LARGE:
 440         m_tools_large->Check();
 441         break;
 442     case wxWEB_VIEW_ZOOM_LARGEST:
 443         m_tools_largest->Check();
 444         break;
 445     }
 446
 447     wxPoint position = ScreenToClient( wxGetMousePosition() );
 448     PopupMenu(m_tools_menu, position.x, position.y);
 449 }
 450
 451 /**
 452   * Invoked when user selects the zoom size in the menu
 453   */
 454 void WebFrame::OnSetZoom(wxCommandEvent& evt)
 455 {
 456     if (evt.GetId() == m_tools_tiny->GetId())
 457     {
 458         m_browser->SetZoom(wxWEB_VIEW_ZOOM_TINY);
 459     }
 460     else if (evt.GetId() == m_tools_small->GetId())
 461     {
 462         m_browser->SetZoom(wxWEB_VIEW_ZOOM_SMALL);
 463     }
 464     else if (evt.GetId() == m_tools_medium->GetId())
 465     {
 466         m_browser->SetZoom(wxWEB_VIEW_ZOOM_MEDIUM);
 467     }
 468     else if (evt.GetId() == m_tools_large->GetId())
 469     {
 470         m_browser->SetZoom(wxWEB_VIEW_ZOOM_LARGE);
 471     }
 472     else if (evt.GetId() == m_tools_largest->GetId())
 473     {
 474         m_browser->SetZoom(wxWEB_VIEW_ZOOM_LARGEST);
 475     }
 476     else
 477     {
 478         wxFAIL;
 479     }
 480 }
 481
 482 /**
 483   * Callback invoked when a loading error occurs
 484   */
 485 void WebFrame::OnError(wxWebNavigationEvent& evt)
 486 {
 487     wxString errorCategory;
 488     switch (evt.GetInt())
 489     {
 490     case  wxWEB_NAV_ERR_CONNECTION:
 491         errorCategory = "wxWEB_NAV_ERR_CONNECTION";
 492         break;
 493
 494     case wxWEB_NAV_ERR_CERTIFICATE:
 495         errorCategory = "wxWEB_NAV_ERR_CERTIFICATE";
 496         break;
 497
 498     case wxWEB_NAV_ERR_AUTH:
 499         errorCategory = "wxWEB_NAV_ERR_AUTH";
 500         break;
 501
 502     case wxWEB_NAV_ERR_SECURITY:
 503         errorCategory = "wxWEB_NAV_ERR_SECURITY";
 504         break;
 505
 506     case wxWEB_NAV_ERR_NOT_FOUND:
 507         errorCategory = "wxWEB_NAV_ERR_NOT_FOUND";
 508         break;
 509
 510     case wxWEB_NAV_ERR_REQUEST:
 511         errorCategory = "wxWEB_NAV_ERR_REQUEST";
 512         break;
 513
 514     case wxWEB_NAV_ERR_USER_CANCELLED:
 515         errorCategory = "wxWEB_NAV_ERR_USER_CANCELLED";
 516         break;
 517
 518     case wxWEB_NAV_ERR_OTHER:
 519         errorCategory = "wxWEB_NAV_ERR_OTHER";
 520         break;
 521     }
 522
 523     wxLogMessage("Error; url='" + evt.GetHref() + "', error='" + errorCategory + "' (" + evt.GetString() + ")");
 524
 525     //Show the info bar with an error
 526     m_info->ShowMessage(_("An error occurred loading ") + evt.GetHref() + "\n" +
 527     "'" + errorCategory + "' (" + evt.GetString() + ")", wxICON_ERROR);
 528
 529     UpdateState();
 530 }
 531
 532 /**
 533   * Invoked when user selects "Print" from the menu
 534   */
 535 void WebFrame::OnPrint(wxCommandEvent& evt)
 536 {
 537     m_browser->Print();
 538 }
 539
 540 SourceViewDialog::SourceViewDialog(wxWindow* parent, wxString source) :
 541                   wxDialog(parent, wxID_ANY, "Source Code",
 542                            wxDefaultPosition, wxSize(700,500),
 543                            wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
 544 {
 545     wxStyledTextCtrl* text = new wxStyledTextCtrl(this, wxID_ANY);
 546     text->SetMarginWidth(1, 30);
 547     text->SetMarginType(1, wxSTC_MARGIN_NUMBER);
 548     text->SetText(source);
 549
 550     text->StyleClearAll();
 551     text->SetLexer(wxSTC_LEX_HTML);
 552     text->StyleSetForeground(wxSTC_H_DOUBLESTRING, wxColour(255,0,0));
 553     text->StyleSetForeground(wxSTC_H_SINGLESTRING, wxColour(255,0,0));
 554     text->StyleSetForeground(wxSTC_H_ENTITY, wxColour(255,0,0));
 555     text->StyleSetForeground(wxSTC_H_TAG, wxColour(0,150,0));
 556     text->StyleSetForeground(wxSTC_H_TAGUNKNOWN, wxColour(0,150,0));
 557     text->StyleSetForeground(wxSTC_H_ATTRIBUTE, wxColour(0,0,150));
 558     text->StyleSetForeground(wxSTC_H_ATTRIBUTEUNKNOWN, wxColour(0,0,150));
 559     text->StyleSetForeground(wxSTC_H_COMMENT, wxColour(150,150,150));
 560
 561     wxBoxSizer* sizer = new wxBoxSizer(wxVERTICAL);
 562     sizer->Add(text, 1, wxEXPAND);
 563     SetSizer(sizer);
 564 }