///////////////////////////////////////////////////////////////////////////// // Name: htmlwin.cpp // Purpose: wxHtmlWindow class for parsing & displaying HTML (implementation) // Author: Vaclav Slavik // RCS-ID: $Id: htmlwin.cpp,v 1.62.2.3 2003/04/09 16:02:31 VS Exp $ // Copyright: (c) 1999 Vaclav Slavik // Licence: wxWindows Licence ///////////////////////////////////////////////////////////////////////////// #ifdef __GNUG__ #pragma implementation "htmlwin.h" #pragma implementation "htmlproc.h" #endif #include "wx/wxprec.h" #include "wx/defs.h" #if wxUSE_HTML && wxUSE_STREAMS #ifdef __BORLANDC__ #pragma hdrstop #endif #ifndef WXPRECOMP #include "wx/log.h" #include "wx/intl.h" #include "wx/dcclient.h" #include "wx/frame.h" #endif #include "wx/html/htmlwin.h" #include "wx/html/htmlproc.h" #include "wx/list.h" #include "wx/arrimpl.cpp" #include "wx/listimpl.cpp" //----------------------------------------------------------------------------- // wxHtmlHistoryItem //----------------------------------------------------------------------------- // item of history list class WXDLLEXPORT wxHtmlHistoryItem { public: wxHtmlHistoryItem(const wxString& p, const wxString& a) {m_Page = p, m_Anchor = a, m_Pos = 0;} int GetPos() const {return m_Pos;} void SetPos(int p) {m_Pos = p;} const wxString& GetPage() const {return m_Page;} const wxString& GetAnchor() const {return m_Anchor;} private: wxString m_Page; wxString m_Anchor; int m_Pos; }; //----------------------------------------------------------------------------- // our private arrays: //----------------------------------------------------------------------------- WX_DECLARE_OBJARRAY(wxHtmlHistoryItem, wxHtmlHistoryArray); WX_DEFINE_OBJARRAY(wxHtmlHistoryArray); WX_DECLARE_LIST(wxHtmlProcessor, wxHtmlProcessorList); WX_DEFINE_LIST(wxHtmlProcessorList); //----------------------------------------------------------------------------- // wxHtmlWindow //----------------------------------------------------------------------------- void wxHtmlWindow::Init() { m_tmpMouseMoved = FALSE; m_tmpLastLink = NULL; m_tmpLastCell = NULL; m_tmpCanDrawLocks = 0; m_FS = new wxFileSystem(); m_RelatedStatusBar = -1; m_RelatedFrame = NULL; m_TitleFormat = wxT("%s"); m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString; m_Cell = NULL; m_Parser = new wxHtmlWinParser(this); m_Parser->SetFS(m_FS); m_HistoryPos = -1; m_HistoryOn = TRUE; m_History = new wxHtmlHistoryArray; m_Processors = NULL; m_Style = 0; SetBorders(10); } bool wxHtmlWindow::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style, const wxString& name) { if (!wxScrolledWindow::Create(parent, id, pos, size, style | wxVSCROLL | wxHSCROLL, name)) return FALSE; m_Style = style; SetPage(wxT("")); return TRUE; } wxHtmlWindow::~wxHtmlWindow() { HistoryClear(); if (m_Cell) delete m_Cell; delete m_Parser; delete m_FS; delete m_History; delete m_Processors; } void wxHtmlWindow::SetRelatedFrame(wxFrame* frame, const wxString& format) { m_RelatedFrame = frame; m_TitleFormat = format; } void wxHtmlWindow::SetRelatedStatusBar(int bar) { m_RelatedStatusBar = bar; } void wxHtmlWindow::SetFonts(wxString normal_face, wxString fixed_face, const int *sizes) { wxString op = m_OpenedPage; m_Parser->SetFonts(normal_face, fixed_face, sizes); // fonts changed => contents invalid, so reload the page: SetPage(wxT("")); if (!op.IsEmpty()) LoadPage(op); } bool wxHtmlWindow::SetPage(const wxString& source) { wxString newsrc(source); // pass HTML through registered processors: if (m_Processors || m_GlobalProcessors) { wxHtmlProcessorList::Node *nodeL, *nodeG; int prL, prG; nodeL = (m_Processors) ? m_Processors->GetFirst() : NULL; nodeG = (m_GlobalProcessors) ? m_GlobalProcessors->GetFirst() : NULL; // VS: there are two lists, global and local, both of them sorted by // priority. Since we have to go through _both_ lists with // decreasing priority, we "merge-sort" the lists on-line by // processing that one of the two heads that has higher priority // in every iteration while (nodeL || nodeG) { prL = (nodeL) ? nodeL->GetData()->GetPriority() : -1; prG = (nodeG) ? nodeG->GetData()->GetPriority() : -1; if (prL > prG) { if (nodeL->GetData()->IsEnabled()) newsrc = nodeL->GetData()->Process(newsrc); nodeL = nodeL->GetNext(); } else // prL <= prG { if (nodeG->GetData()->IsEnabled()) newsrc = nodeG->GetData()->Process(newsrc); nodeG = nodeG->GetNext(); } } } // ...and run the parser on it: wxClientDC *dc = new wxClientDC(this); dc->SetMapMode(wxMM_TEXT); SetBackgroundColour(wxColour(0xFF, 0xFF, 0xFF)); m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString; m_Parser->SetDC(dc); if (m_Cell) { delete m_Cell; m_Cell = NULL; } m_Cell = (wxHtmlContainerCell*) m_Parser->Parse(newsrc); delete dc; m_Cell->SetIndent(m_Borders, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS); m_Cell->SetAlignHor(wxHTML_ALIGN_CENTER); CreateLayout(); if (m_tmpCanDrawLocks == 0) Refresh(); return TRUE; } bool wxHtmlWindow::AppendToPage(const wxString& source) { return SetPage(*(GetParser()->GetSource()) + source); } bool wxHtmlWindow::LoadPage(const wxString& location) { wxBusyCursor busyCursor; wxFSFile *f; bool rt_val; bool needs_refresh = FALSE; m_tmpCanDrawLocks++; if (m_HistoryOn && (m_HistoryPos != -1)) { // store scroll position into history item: int x, y; GetViewStart(&x, &y); (*m_History)[m_HistoryPos].SetPos(y); } if (location[0] == wxT('#')) { // local anchor: wxString anch = location.Mid(1) /*1 to end*/; m_tmpCanDrawLocks--; rt_val = ScrollToAnchor(anch); m_tmpCanDrawLocks++; } else if (location.Find(wxT('#')) != wxNOT_FOUND && location.BeforeFirst(wxT('#')) == m_OpenedPage) { wxString anch = location.AfterFirst(wxT('#')); m_tmpCanDrawLocks--; rt_val = ScrollToAnchor(anch); m_tmpCanDrawLocks++; } else if (location.Find(wxT('#')) != wxNOT_FOUND && (m_FS->GetPath() + location.BeforeFirst(wxT('#'))) == m_OpenedPage) { wxString anch = location.AfterFirst(wxT('#')); m_tmpCanDrawLocks--; rt_val = ScrollToAnchor(anch); m_tmpCanDrawLocks++; } else { needs_refresh = TRUE; // load&display it: if (m_RelatedStatusBar != -1) { m_RelatedFrame->SetStatusText(_("Connecting..."), m_RelatedStatusBar); Refresh(FALSE); } f = m_Parser->OpenURL(wxHTML_URL_PAGE, location); if (f == NULL) { wxLogError(_("Unable to open requested HTML document: %s"), location.c_str()); m_tmpCanDrawLocks--; return FALSE; } else { wxNode *node; wxString src = wxEmptyString; if (m_RelatedStatusBar != -1) { wxString msg = _("Loading : ") + location; m_RelatedFrame->SetStatusText(msg, m_RelatedStatusBar); Refresh(FALSE); } node = m_Filters.GetFirst(); while (node) { wxHtmlFilter *h = (wxHtmlFilter*) node->GetData(); if (h->CanRead(*f)) { src = h->ReadFile(*f); break; } node = node->GetNext(); } if (src == wxEmptyString) { if (m_DefaultFilter == NULL) m_DefaultFilter = GetDefaultFilter(); src = m_DefaultFilter->ReadFile(*f); } m_FS->ChangePathTo(f->GetLocation()); rt_val = SetPage(src); m_OpenedPage = f->GetLocation(); if (f->GetAnchor() != wxEmptyString) { ScrollToAnchor(f->GetAnchor()); } delete f; if (m_RelatedStatusBar != -1) m_RelatedFrame->SetStatusText(_("Done"), m_RelatedStatusBar); } } if (m_HistoryOn) // add this page to history there: { int c = m_History->GetCount() - (m_HistoryPos + 1); if (m_HistoryPos < 0 || (*m_History)[m_HistoryPos].GetPage() != m_OpenedPage || (*m_History)[m_HistoryPos].GetAnchor() != m_OpenedAnchor) { m_HistoryPos++; for (int i = 0; i < c; i++) m_History->RemoveAt(m_HistoryPos); m_History->Add(new wxHtmlHistoryItem(m_OpenedPage, m_OpenedAnchor)); } } if (m_OpenedPageTitle == wxEmptyString) OnSetTitle(wxFileNameFromPath(m_OpenedPage)); if (needs_refresh) { m_tmpCanDrawLocks--; Refresh(); } else m_tmpCanDrawLocks--; return rt_val; } bool wxHtmlWindow::LoadFile(const wxFileName& filename) { wxString url = wxFileSystem::FileNameToURL(filename); return LoadPage(url); } bool wxHtmlWindow::ScrollToAnchor(const wxString& anchor) { const wxHtmlCell *c = m_Cell->Find(wxHTML_COND_ISANCHOR, &anchor); if (!c) { wxLogWarning(_("HTML anchor %s does not exist."), anchor.c_str()); return FALSE; } else { int y; for (y = 0; c != NULL; c = c->GetParent()) y += c->GetPosY(); Scroll(-1, y / wxHTML_SCROLL_STEP); m_OpenedAnchor = anchor; return TRUE; } } void wxHtmlWindow::OnSetTitle(const wxString& title) { if (m_RelatedFrame) { wxString tit; tit.Printf(m_TitleFormat, title.c_str()); m_RelatedFrame->SetTitle(tit); } m_OpenedPageTitle = title; } void wxHtmlWindow::CreateLayout() { int ClientWidth, ClientHeight; if (!m_Cell) return; if (m_Style & wxHW_SCROLLBAR_NEVER) { SetScrollbars(wxHTML_SCROLL_STEP, 1, m_Cell->GetWidth() / wxHTML_SCROLL_STEP, 0); // always off GetClientSize(&ClientWidth, &ClientHeight); m_Cell->Layout(ClientWidth); } else { GetClientSize(&ClientWidth, &ClientHeight); m_Cell->Layout(ClientWidth); if (ClientHeight < m_Cell->GetHeight() + GetCharHeight()) { SetScrollbars( wxHTML_SCROLL_STEP, wxHTML_SCROLL_STEP, m_Cell->GetWidth() / wxHTML_SCROLL_STEP, (m_Cell->GetHeight() + GetCharHeight()) / wxHTML_SCROLL_STEP /*cheat: top-level frag is always container*/); } else /* we fit into window, no need for scrollbars */ { SetScrollbars(wxHTML_SCROLL_STEP, 1, m_Cell->GetWidth() / wxHTML_SCROLL_STEP, 0); // disable... GetClientSize(&ClientWidth, &ClientHeight); m_Cell->Layout(ClientWidth); // ...and relayout } } } void wxHtmlWindow::ReadCustomization(wxConfigBase *cfg, wxString path) { wxString oldpath; wxString tmp; int p_fontsizes[7]; wxString p_fff, p_ffn; if (path != wxEmptyString) { oldpath = cfg->GetPath(); cfg->SetPath(path); } m_Borders = cfg->Read(wxT("wxHtmlWindow/Borders"), m_Borders); p_fff = cfg->Read(wxT("wxHtmlWindow/FontFaceFixed"), m_Parser->m_FontFaceFixed); p_ffn = cfg->Read(wxT("wxHtmlWindow/FontFaceNormal"), m_Parser->m_FontFaceNormal); for (int i = 0; i < 7; i++) { tmp.Printf(wxT("wxHtmlWindow/FontsSize%i"), i); p_fontsizes[i] = cfg->Read(tmp, m_Parser->m_FontsSizes[i]); } SetFonts(p_ffn, p_fff, p_fontsizes); if (path != wxEmptyString) cfg->SetPath(oldpath); } void wxHtmlWindow::WriteCustomization(wxConfigBase *cfg, wxString path) { wxString oldpath; wxString tmp; if (path != wxEmptyString) { oldpath = cfg->GetPath(); cfg->SetPath(path); } cfg->Write(wxT("wxHtmlWindow/Borders"), (long) m_Borders); cfg->Write(wxT("wxHtmlWindow/FontFaceFixed"), m_Parser->m_FontFaceFixed); cfg->Write(wxT("wxHtmlWindow/FontFaceNormal"), m_Parser->m_FontFaceNormal); for (int i = 0; i < 7; i++) { tmp.Printf(wxT("wxHtmlWindow/FontsSize%i"), i); cfg->Write(tmp, (long) m_Parser->m_FontsSizes[i]); } if (path != wxEmptyString) cfg->SetPath(oldpath); } bool wxHtmlWindow::HistoryBack() { wxString a, l; if (m_HistoryPos < 1) return FALSE; // store scroll position into history item: int x, y; GetViewStart(&x, &y); (*m_History)[m_HistoryPos].SetPos(y); // go to previous position: m_HistoryPos--; l = (*m_History)[m_HistoryPos].GetPage(); a = (*m_History)[m_HistoryPos].GetAnchor(); m_HistoryOn = FALSE; m_tmpCanDrawLocks++; if (a == wxEmptyString) LoadPage(l); else LoadPage(l + wxT("#") + a); m_HistoryOn = TRUE; m_tmpCanDrawLocks--; Scroll(0, (*m_History)[m_HistoryPos].GetPos()); Refresh(); return TRUE; } bool wxHtmlWindow::HistoryCanBack() { if (m_HistoryPos < 1) return FALSE; return TRUE ; } bool wxHtmlWindow::HistoryForward() { wxString a, l; if (m_HistoryPos == -1) return FALSE; if (m_HistoryPos >= (int)m_History->GetCount() - 1)return FALSE; m_OpenedPage = wxEmptyString; // this will disable adding new entry into history in LoadPage() m_HistoryPos++; l = (*m_History)[m_HistoryPos].GetPage(); a = (*m_History)[m_HistoryPos].GetAnchor(); m_HistoryOn = FALSE; m_tmpCanDrawLocks++; if (a == wxEmptyString) LoadPage(l); else LoadPage(l + wxT("#") + a); m_HistoryOn = TRUE; m_tmpCanDrawLocks--; Scroll(0, (*m_History)[m_HistoryPos].GetPos()); Refresh(); return TRUE; } bool wxHtmlWindow::HistoryCanForward() { if (m_HistoryPos == -1) return FALSE; if (m_HistoryPos >= (int)m_History->GetCount() - 1)return FALSE; return TRUE ; } void wxHtmlWindow::HistoryClear() { m_History->Empty(); m_HistoryPos = -1; } void wxHtmlWindow::AddProcessor(wxHtmlProcessor *processor) { if (!m_Processors) { m_Processors = new wxHtmlProcessorList; m_Processors->DeleteContents(TRUE); } wxHtmlProcessorList::Node *node; for (node = m_Processors->GetFirst(); node; node = node->GetNext()) { if (processor->GetPriority() > node->GetData()->GetPriority()) { m_Processors->Insert(node, processor); return; } } m_Processors->Append(processor); } /*static */ void wxHtmlWindow::AddGlobalProcessor(wxHtmlProcessor *processor) { if (!m_GlobalProcessors) { m_GlobalProcessors = new wxHtmlProcessorList; m_GlobalProcessors->DeleteContents(TRUE); } wxHtmlProcessorList::Node *node; for (node = m_GlobalProcessors->GetFirst(); node; node = node->GetNext()) { if (processor->GetPriority() > node->GetData()->GetPriority()) { m_GlobalProcessors->Insert(node, processor); return; } } m_GlobalProcessors->Append(processor); } wxList wxHtmlWindow::m_Filters; wxHtmlFilter *wxHtmlWindow::m_DefaultFilter = NULL; wxCursor *wxHtmlWindow::s_cur_hand = NULL; wxCursor *wxHtmlWindow::s_cur_arrow = NULL; wxHtmlProcessorList *wxHtmlWindow::m_GlobalProcessors = NULL; void wxHtmlWindow::CleanUpStatics() { wxDELETE(m_DefaultFilter); m_Filters.DeleteContents(TRUE); m_Filters.Clear(); wxDELETE(m_GlobalProcessors); wxDELETE(s_cur_hand); wxDELETE(s_cur_arrow); } void wxHtmlWindow::AddFilter(wxHtmlFilter *filter) { m_Filters.Append(filter); } void wxHtmlWindow::OnLinkClicked(const wxHtmlLinkInfo& link) { char apppath[MAX_PATH],*temp; GetModuleFileName(NULL,apppath,sizeof(apppath)); temp=strrchr(apppath,'\\'); if(temp!=NULL) *temp=0; char fullpath[MAX_PATH]; if (link.GetHref().Left(3).Cmp("EX:") == 0) { // External if ((link.GetHref().Left(10).Cmp("EX:http://") == 0) || (link.GetHref().Left(9).Cmp("EX:irc://") == 0)) { // Internet ShellExecute(0, "open", link.GetHref().Mid(3), NULL, NULL, SW_SHOW); } else { _snprintf(fullpath,sizeof(fullpath),"%s\\%s",apppath,link.GetHref().Mid(3)); if (wxFileExists(fullpath) || wxDirExists(fullpath)) { ShellExecute(0, "open", fullpath, NULL, NULL, SW_SHOW); } else { // Feature not installed _snprintf(fullpath,sizeof(fullpath),"%s\\Menu\\notinstalled.html",apppath,link.GetHref()); LoadPage(fullpath); } } } else { _snprintf(fullpath,sizeof(fullpath),"%s\\Menu\\%s",apppath,link.GetHref()); LoadPage(fullpath); } } void wxHtmlWindow::OnCellClicked(wxHtmlCell *cell, wxCoord x, wxCoord y, const wxMouseEvent& event) { wxCHECK_RET( cell, _T("can't be called with NULL cell") ); cell->OnMouseClick(this, x, y, event); } void wxHtmlWindow::OnCellMouseHover(wxHtmlCell * WXUNUSED(cell), wxCoord WXUNUSED(x), wxCoord WXUNUSED(y)) { // do nothing here } void wxHtmlWindow::OnDraw(wxDC& dc) { if (m_tmpCanDrawLocks > 0 || m_Cell == NULL) return; int x, y; wxRect rect = GetUpdateRegion().GetBox(); dc.SetMapMode(wxMM_TEXT); dc.SetBackgroundMode(wxTRANSPARENT); GetViewStart(&x, &y); m_Cell->Draw(dc, 0, 0, y * wxHTML_SCROLL_STEP + rect.GetTop(), y * wxHTML_SCROLL_STEP + rect.GetBottom()); } void wxHtmlWindow::OnSize(wxSizeEvent& event) { wxScrolledWindow::OnSize(event); CreateLayout(); Refresh(); } void wxHtmlWindow::OnMouseEvent(wxMouseEvent& event) { m_tmpMouseMoved = TRUE; if (event.ButtonDown()) { SetFocus(); if ( m_Cell ) { int sx, sy; GetViewStart(&sx, &sy); sx *= wxHTML_SCROLL_STEP; sy *= wxHTML_SCROLL_STEP; wxPoint pos = event.GetPosition(); pos.x += sx; pos.y += sy; wxHtmlCell *cell = m_Cell->FindCellByPos(pos.x, pos.y); // VZ: is it possible that we don't find anything at all? // VS: yes. FindCellByPos returns terminal cell and // containers may have empty borders if ( cell ) OnCellClicked(cell, pos.x, pos.y, event); } } } void wxHtmlWindow::OnIdle(wxIdleEvent& WXUNUSED(event)) { if (s_cur_hand == NULL) { s_cur_hand = new wxCursor(wxCURSOR_HAND); s_cur_arrow = new wxCursor(wxCURSOR_ARROW); } if (m_tmpMouseMoved && (m_Cell != NULL)) { int sx, sy; GetViewStart(&sx, &sy); sx *= wxHTML_SCROLL_STEP; sy *= wxHTML_SCROLL_STEP; int x, y; wxGetMousePosition(&x, &y); ScreenToClient(&x, &y); x += sx; y += sy; wxHtmlCell *cell = m_Cell->FindCellByPos(x, y); if ( cell != m_tmpLastCell ) { wxHtmlLinkInfo *lnk = cell ? cell->GetLink(x, y) : NULL; if (lnk != m_tmpLastLink) { if (lnk == NULL) { SetCursor(*s_cur_arrow); if (m_RelatedStatusBar != -1) m_RelatedFrame->SetStatusText(wxEmptyString, m_RelatedStatusBar); } else { SetCursor(*s_cur_hand); if (m_RelatedStatusBar != -1) m_RelatedFrame->SetStatusText(lnk->GetHref(), m_RelatedStatusBar); } m_tmpLastLink = lnk; } m_tmpLastCell = cell; } else // mouse moved but stayed in the same cell { if ( cell ) OnCellMouseHover(cell, x, y); } m_tmpMouseMoved = FALSE; } } IMPLEMENT_ABSTRACT_CLASS(wxHtmlProcessor,wxObject) IMPLEMENT_DYNAMIC_CLASS(wxHtmlWindow,wxScrolledWindow) BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow) EVT_SIZE(wxHtmlWindow::OnSize) EVT_LEFT_DOWN(wxHtmlWindow::OnMouseEvent) EVT_RIGHT_DOWN(wxHtmlWindow::OnMouseEvent) EVT_MOTION(wxHtmlWindow::OnMouseEvent) EVT_IDLE(wxHtmlWindow::OnIdle) END_EVENT_TABLE() // A module to allow initialization/cleanup // without calling these functions from app.cpp or from // the user's application. class wxHtmlWinModule: public wxModule { DECLARE_DYNAMIC_CLASS(wxHtmlWinModule) public: wxHtmlWinModule() : wxModule() {} bool OnInit() { return TRUE; } void OnExit() { wxHtmlWindow::CleanUpStatics(); } }; IMPLEMENT_DYNAMIC_CLASS(wxHtmlWinModule, wxModule) // This hack forces the linker to always link in m_* files // (wxHTML doesn't work without handlers from these files) #include "wx/html/forcelnk.h" FORCE_WXHTML_MODULES() #endif