///////////////////////////////////////////////////////////////////////////// // Name: src/html/htmlwin.cpp // Purpose: wxHtmlWindow class for parsing & displaying HTML (implementation) // Author: Vaclav Slavik // RCS-ID: $Id: htmlwin.cpp 56333 2008-10-15 15:43:10Z VS $ // Copyright: (c) 1999 Vaclav Slavik // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #if wxUSE_HTML && wxUSE_STREAMS #ifndef WXPRECOMP #include "wx/list.h" #include "wx/log.h" #include "wx/intl.h" #include "wx/dcclient.h" #include "wx/frame.h" #include "wx/dcmemory.h" #include "wx/timer.h" #include "wx/settings.h" #include "wx/dataobj.h" #endif #include "wx/html/htmlwin.h" #include "wx/html/htmlproc.h" #include "wx/clipbrd.h" #include "wx/arrimpl.cpp" #include "wx/listimpl.cpp" // HTML events: IMPLEMENT_DYNAMIC_CLASS(wxHtmlLinkEvent, wxCommandEvent) IMPLEMENT_DYNAMIC_CLASS(wxHtmlCellEvent, wxCommandEvent) DEFINE_EVENT_TYPE(wxEVT_COMMAND_HTML_CELL_CLICKED) DEFINE_EVENT_TYPE(wxEVT_COMMAND_HTML_CELL_HOVER) DEFINE_EVENT_TYPE(wxEVT_COMMAND_HTML_LINK_CLICKED) #if wxUSE_CLIPBOARD // ---------------------------------------------------------------------------- // wxHtmlWinAutoScrollTimer: the timer used to generate a stream of scroll // events when a captured mouse is held outside the window // ---------------------------------------------------------------------------- class wxHtmlWinAutoScrollTimer : public wxTimer { public: wxHtmlWinAutoScrollTimer(wxScrolledWindow *win, wxEventType eventTypeToSend, int pos, int orient) { m_win = win; m_eventType = eventTypeToSend; m_pos = pos; m_orient = orient; } virtual void Notify(); private: wxScrolledWindow *m_win; wxEventType m_eventType; int m_pos, m_orient; DECLARE_NO_COPY_CLASS(wxHtmlWinAutoScrollTimer) }; void wxHtmlWinAutoScrollTimer::Notify() { // only do all this as long as the window is capturing the mouse if ( wxWindow::GetCapture() != m_win ) { Stop(); } else // we still capture the mouse, continue generating events { // first scroll the window if we are allowed to do it wxScrollWinEvent event1(m_eventType, m_pos, m_orient); event1.SetEventObject(m_win); if ( m_win->GetEventHandler()->ProcessEvent(event1) ) { // and then send a pseudo mouse-move event to refresh the selection wxMouseEvent event2(wxEVT_MOTION); wxGetMousePosition(&event2.m_x, &event2.m_y); // the mouse event coordinates should be client, not screen as // returned by wxGetMousePosition wxWindow *parentTop = m_win; while ( parentTop->GetParent() ) parentTop = parentTop->GetParent(); wxPoint ptOrig = parentTop->GetPosition(); event2.m_x -= ptOrig.x; event2.m_y -= ptOrig.y; event2.SetEventObject(m_win); // FIXME: we don't fill in the other members - ok? m_win->GetEventHandler()->ProcessEvent(event2); } else // can't scroll further, stop { Stop(); } } } #endif // wxUSE_CLIPBOARD //----------------------------------------------------------------------------- // wxHtmlHistoryItem //----------------------------------------------------------------------------- // item of history list class WXDLLIMPEXP_HTML 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) //----------------------------------------------------------------------------- // wxHtmlWindowMouseHelper //----------------------------------------------------------------------------- wxHtmlWindowMouseHelper::wxHtmlWindowMouseHelper(wxHtmlWindowInterface *iface) : m_tmpMouseMoved(false), m_tmpLastLink(NULL), m_tmpLastCell(NULL), m_interface(iface) { } void wxHtmlWindowMouseHelper::HandleMouseMoved() { m_tmpMouseMoved = true; } bool wxHtmlWindowMouseHelper::HandleMouseClick(wxHtmlCell *rootCell, const wxPoint& pos, const wxMouseEvent& event) { if (!rootCell) return false; wxHtmlCell *cell = rootCell->FindCellByPos(pos.x, pos.y); // this check is needed because FindCellByPos returns terminal cell and // containers may have empty borders -- in this case NULL will be // returned if (!cell) return false; // adjust the coordinates to be relative to this cell: wxPoint relpos = pos - cell->GetAbsPos(rootCell); return OnCellClicked(cell, relpos.x, relpos.y, event); } void wxHtmlWindowMouseHelper::HandleIdle(wxHtmlCell *rootCell, const wxPoint& pos) { wxHtmlCell *cell = rootCell ? rootCell->FindCellByPos(pos.x, pos.y) : NULL; if (cell != m_tmpLastCell) { wxHtmlLinkInfo *lnk = NULL; if (cell) { // adjust the coordinates to be relative to this cell: wxPoint relpos = pos - cell->GetAbsPos(rootCell); lnk = cell->GetLink(relpos.x, relpos.y); } wxCursor cur; if (cell) cur = cell->GetMouseCursor(m_interface); else cur = m_interface->GetHTMLCursor( wxHtmlWindowInterface::HTMLCursor_Default); m_interface->GetHTMLWindow()->SetCursor(cur); if (lnk != m_tmpLastLink) { if (lnk) m_interface->SetHTMLStatusText(lnk->GetHref()); else m_interface->SetHTMLStatusText(wxEmptyString); m_tmpLastLink = lnk; } m_tmpLastCell = cell; } else // mouse moved but stayed in the same cell { if ( cell ) { OnCellMouseHover(cell, pos.x, pos.y); } } m_tmpMouseMoved = false; } bool wxHtmlWindowMouseHelper::OnCellClicked(wxHtmlCell *cell, wxCoord x, wxCoord y, const wxMouseEvent& event) { wxHtmlCellEvent ev(wxEVT_COMMAND_HTML_CELL_CLICKED, m_interface->GetHTMLWindow()->GetId(), cell, wxPoint(x,y), event); if (!m_interface->GetHTMLWindow()->GetEventHandler()->ProcessEvent(ev)) { // if the event wasn't handled, do the default processing here: wxASSERT_MSG( cell, _T("can't be called with NULL cell") ); cell->ProcessMouseClick(m_interface, ev.GetPoint(), ev.GetMouseEvent()); } // true if a link was clicked, false otherwise return ev.GetLinkClicked(); } void wxHtmlWindowMouseHelper::OnCellMouseHover(wxHtmlCell * cell, wxCoord x, wxCoord y) { wxHtmlCellEvent ev(wxEVT_COMMAND_HTML_CELL_HOVER, m_interface->GetHTMLWindow()->GetId(), cell, wxPoint(x,y), wxMouseEvent()); m_interface->GetHTMLWindow()->GetEventHandler()->ProcessEvent(ev); } //----------------------------------------------------------------------------- // wxHtmlWindow //----------------------------------------------------------------------------- wxList wxHtmlWindow::m_Filters; wxHtmlFilter *wxHtmlWindow::m_DefaultFilter = NULL; wxHtmlProcessorList *wxHtmlWindow::m_GlobalProcessors = NULL; wxCursor *wxHtmlWindow::ms_cursorLink = NULL; wxCursor *wxHtmlWindow::ms_cursorText = NULL; void wxHtmlWindow::CleanUpStatics() { wxDELETE(m_DefaultFilter); WX_CLEAR_LIST(wxList, m_Filters); if (m_GlobalProcessors) WX_CLEAR_LIST(wxHtmlProcessorList, *m_GlobalProcessors); wxDELETE(m_GlobalProcessors); wxDELETE(ms_cursorLink); wxDELETE(ms_cursorText); } void wxHtmlWindow::Init() { m_tmpCanDrawLocks = 0; m_FS = new wxFileSystem(); #if wxUSE_STATUSBAR m_RelatedStatusBar = -1; #endif // wxUSE_STATUSBAR 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; SetBorders(10); m_selection = NULL; m_makingSelection = false; #if wxUSE_CLIPBOARD m_timerAutoScroll = NULL; m_lastDoubleClick = 0; #endif // wxUSE_CLIPBOARD m_backBuffer = NULL; m_eraseBgInOnPaint = false; m_tmpSelFromCell = NULL; } 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; SetPage(wxT("")); return true; } wxHtmlWindow::~wxHtmlWindow() { #if wxUSE_CLIPBOARD StopAutoScrolling(); #endif // wxUSE_CLIPBOARD HistoryClear(); delete m_selection; delete m_Cell; if ( m_Processors ) { WX_CLEAR_LIST(wxHtmlProcessorList, *m_Processors); } delete m_Parser; delete m_FS; delete m_History; delete m_Processors; delete m_backBuffer; } void wxHtmlWindow::SetRelatedFrame(wxFrame* frame, const wxString& format) { m_RelatedFrame = frame; m_TitleFormat = format; } #if wxUSE_STATUSBAR void wxHtmlWindow::SetRelatedStatusBar(int bar) { m_RelatedStatusBar = bar; } #endif // wxUSE_STATUSBAR void wxHtmlWindow::SetFonts(const wxString& normal_face, const wxString& fixed_face, const int *sizes) { m_Parser->SetFonts(normal_face, fixed_face, sizes); // re-layout the page after changing fonts: DoSetPage(*(m_Parser->GetSource())); } void wxHtmlWindow::SetStandardFonts(int size, const wxString& normal_face, const wxString& fixed_face) { m_Parser->SetStandardFonts(size, normal_face, fixed_face); // re-layout the page after changing fonts: DoSetPage(*(m_Parser->GetSource())); } bool wxHtmlWindow::SetPage(const wxString& source) { m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString; return DoSetPage(source); } bool wxHtmlWindow::DoSetPage(const wxString& source) { wxString newsrc(source); wxDELETE(m_selection); // we will soon delete all the cells, so clear pointers to them: m_tmpSelFromCell = NULL; // pass HTML through registered processors: if (m_Processors || m_GlobalProcessors) { wxHtmlProcessorList::compatibility_iterator nodeL, nodeG; int prL, prG; if ( m_Processors ) nodeL = m_Processors->GetFirst(); if ( m_GlobalProcessors ) nodeG = m_GlobalProcessors->GetFirst(); // 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)); SetBackgroundImage(wxNullBitmap); 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 DoSetPage(*(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; #if wxUSE_STATUSBAR // load&display it: if (m_RelatedStatusBar != -1) { m_RelatedFrame->SetStatusText(_("Connecting..."), m_RelatedStatusBar); Refresh(false); } #endif // wxUSE_STATUSBAR f = m_Parser->OpenURL(wxHTML_URL_PAGE, location); // try to interpret 'location' as filename instead of URL: if (f == NULL) { wxFileName fn(location); wxString location2 = wxFileSystem::FileNameToURL(fn); f = m_Parser->OpenURL(wxHTML_URL_PAGE, location2); } if (f == NULL) { wxLogError(_("Unable to open requested HTML document: %s"), location.c_str()); m_tmpCanDrawLocks--; SetHTMLStatusText(wxEmptyString); return false; } else { wxList::compatibility_iterator node; wxString src = wxEmptyString; #if wxUSE_STATUSBAR if (m_RelatedStatusBar != -1) { wxString msg = _("Loading : ") + location; m_RelatedFrame->SetStatusText(msg, m_RelatedStatusBar); Refresh(false); } #endif // wxUSE_STATUSBAR 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 wxUSE_STATUSBAR if (m_RelatedStatusBar != -1) m_RelatedFrame->SetStatusText(_("Done"), m_RelatedStatusBar); #endif // wxUSE_STATUSBAR } } 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 ( HasFlag(wxHW_SCROLLBAR_NEVER) ) { SetScrollbars(1, 1, 0, 0); // always off GetClientSize(&ClientWidth, &ClientHeight); m_Cell->Layout(ClientWidth); } else // !wxHW_SCROLLBAR_NEVER { 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; } wxHtmlProcessorList::compatibility_iterator 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; } wxHtmlProcessorList::compatibility_iterator 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); } void wxHtmlWindow::AddFilter(wxHtmlFilter *filter) { m_Filters.Append(filter); } bool wxHtmlWindow::IsSelectionEnabled() const { #if wxUSE_CLIPBOARD return !HasFlag(wxHW_NO_SELECTION); #else return false; #endif } #if wxUSE_CLIPBOARD wxString wxHtmlWindow::DoSelectionToText(wxHtmlSelection *sel) { if ( !sel ) return wxEmptyString; wxClientDC dc(this); wxString text; wxHtmlTerminalCellsInterator i(sel->GetFromCell(), sel->GetToCell()); const wxHtmlCell *prev = NULL; while ( i ) { // When converting HTML content to plain text, the entire paragraph // (container in wxHTML) goes on single line. A new paragraph (that // should go on its own line) has its own container. Therefore, the // simplest way of detecting where to insert newlines in plain text // is to check if the parent container changed -- if it did, we moved // to a new paragraph. if ( prev && prev->GetParent() != i->GetParent() ) text << wxT('\n'); // NB: we don't need to pass the selection to ConvertToText() in the // middle of the selected text; it's only useful when only part of // a cell is selected text << i->ConvertToText(sel); prev = *i; ++i; } return text; } wxString wxHtmlWindow::ToText() { if (m_Cell) { wxHtmlSelection sel; sel.Set(m_Cell->GetFirstTerminal(), m_Cell->GetLastTerminal()); return DoSelectionToText(&sel); } else return wxEmptyString; } #endif // wxUSE_CLIPBOARD bool wxHtmlWindow::CopySelection(ClipboardType t) { #if wxUSE_CLIPBOARD if ( m_selection ) { #if defined(__UNIX__) && !defined(__WXMAC__) wxTheClipboard->UsePrimarySelection(t == Primary); #else // !__UNIX__ // Primary selection exists only under X11, so don't do anything under // the other platforms when we try to access it // // TODO: this should be abstracted at wxClipboard level! if ( t == Primary ) return false; #endif // __UNIX__/!__UNIX__ if ( wxTheClipboard->Open() ) { const wxString txt(SelectionToText()); wxTheClipboard->SetData(new wxTextDataObject(txt)); wxTheClipboard->Close(); wxLogTrace(_T("wxhtmlselection"), _("Copied to clipboard:\"%s\""), txt.c_str()); return true; } } #else wxUnusedVar(t); #endif // wxUSE_CLIPBOARD return false; } void wxHtmlWindow::OnLinkClicked(const wxHtmlLinkInfo& link) { wxHtmlLinkEvent event(GetId(), link); event.SetEventObject(this); if (!GetEventHandler()->ProcessEvent(event)) { // the default behaviour is to load the URL in this window const wxMouseEvent *e = event.GetLinkInfo().GetEvent(); if (e == NULL || e->LeftUp()) LoadPage(event.GetLinkInfo().GetHref()); } } void wxHtmlWindow::OnEraseBackground(wxEraseEvent& event) { if ( !m_bmpBg.Ok() ) { // don't even skip the event, if we don't have a bg bitmap we're going // to overwrite background in OnPaint() below anyhow, so letting the // default handling take place would only result in flicker, just set a // flag to erase the background below m_eraseBgInOnPaint = true; return; } wxDC& dc = *event.GetDC(); // if the image is not fully opaque, we have to erase the background before // drawing it, however avoid doing it for opaque images as this would just // result in extra flicker without any other effect as background is // completely covered anyhow if ( m_bmpBg.GetMask() ) { dc.SetBackground(wxBrush(GetBackgroundColour(), wxSOLID)); dc.Clear(); } const wxSize sizeWin(GetClientSize()); const wxSize sizeBmp(m_bmpBg.GetWidth(), m_bmpBg.GetHeight()); for ( wxCoord x = 0; x < sizeWin.x; x += sizeBmp.x ) { for ( wxCoord y = 0; y < sizeWin.y; y += sizeBmp.y ) { dc.DrawBitmap(m_bmpBg, x, y, true /* use mask */); } } } void wxHtmlWindow::OnPaint(wxPaintEvent& WXUNUSED(event)) { wxPaintDC dc(this); if (m_tmpCanDrawLocks > 0 || m_Cell == NULL) return; int x, y; GetViewStart(&x, &y); wxRect rect = GetUpdateRegion().GetBox(); wxSize sz = GetSize(); wxMemoryDC dcm; if ( !m_backBuffer ) m_backBuffer = new wxBitmap(sz.x, sz.y); dcm.SelectObject(*m_backBuffer); if ( m_eraseBgInOnPaint ) { dcm.SetBackground(wxBrush(GetBackgroundColour(), wxSOLID)); dcm.Clear(); m_eraseBgInOnPaint = false; } else // someone has already erased the background, keep it { // preserve the existing background, otherwise we'd erase anything the // user code had drawn in its EVT_ERASE_BACKGROUND handler when we do // the Blit back below dcm.Blit(0, rect.GetTop(), sz.x, rect.GetBottom() - rect.GetTop() + 1, &dc, 0, rect.GetTop()); } PrepareDC(dcm); dcm.SetMapMode(wxMM_TEXT); dcm.SetBackgroundMode(wxTRANSPARENT); wxHtmlRenderingInfo rinfo; wxDefaultHtmlRenderingStyle rstyle; rinfo.SetSelection(m_selection); rinfo.SetStyle(&rstyle); m_Cell->Draw(dcm, 0, 0, y * wxHTML_SCROLL_STEP + rect.GetTop(), y * wxHTML_SCROLL_STEP + rect.GetBottom(), rinfo); //#define DEBUG_HTML_SELECTION #ifdef DEBUG_HTML_SELECTION { int xc, yc, x, y; wxGetMousePosition(&xc, &yc); ScreenToClient(&xc, &yc); CalcUnscrolledPosition(xc, yc, &x, &y); wxHtmlCell *at = m_Cell->FindCellByPos(x, y); wxHtmlCell *before = m_Cell->FindCellByPos(x, y, wxHTML_FIND_NEAREST_BEFORE); wxHtmlCell *after = m_Cell->FindCellByPos(x, y, wxHTML_FIND_NEAREST_AFTER); dcm.SetBrush(*wxTRANSPARENT_BRUSH); dcm.SetPen(*wxBLACK_PEN); if (at) dcm.DrawRectangle(at->GetAbsPos(), wxSize(at->GetWidth(),at->GetHeight())); dcm.SetPen(*wxGREEN_PEN); if (before) dcm.DrawRectangle(before->GetAbsPos().x+1, before->GetAbsPos().y+1, before->GetWidth()-2,before->GetHeight()-2); dcm.SetPen(*wxRED_PEN); if (after) dcm.DrawRectangle(after->GetAbsPos().x+2, after->GetAbsPos().y+2, after->GetWidth()-4,after->GetHeight()-4); } #endif dcm.SetDeviceOrigin(0,0); dc.Blit(0, rect.GetTop(), sz.x, rect.GetBottom() - rect.GetTop() + 1, &dcm, 0, rect.GetTop()); } void wxHtmlWindow::OnSize(wxSizeEvent& event) { wxDELETE(m_backBuffer); wxScrolledWindow::OnSize(event); CreateLayout(); // Recompute selection if necessary: if ( m_selection ) { m_selection->Set(m_selection->GetFromCell(), m_selection->GetToCell()); m_selection->ClearPrivPos(); } Refresh(); } void wxHtmlWindow::OnMouseMove(wxMouseEvent& WXUNUSED(event)) { wxHtmlWindowMouseHelper::HandleMouseMoved(); } void wxHtmlWindow::OnMouseDown(wxMouseEvent& event) { #if wxUSE_CLIPBOARD if ( event.LeftDown() && IsSelectionEnabled() ) { const long TRIPLECLICK_LEN = 200; // 0.2 sec after doubleclick if ( wxGetLocalTimeMillis() - m_lastDoubleClick <= TRIPLECLICK_LEN ) { SelectLine(CalcUnscrolledPosition(event.GetPosition())); (void) CopySelection(); } else { m_makingSelection = true; if ( m_selection ) { wxDELETE(m_selection); Refresh(); } m_tmpSelFromPos = CalcUnscrolledPosition(event.GetPosition()); m_tmpSelFromCell = NULL; CaptureMouse(); } } #else wxUnusedVar(event); #endif // wxUSE_CLIPBOARD } void wxHtmlWindow::OnMouseUp(wxMouseEvent& event) { #if wxUSE_CLIPBOARD if ( m_makingSelection ) { ReleaseMouse(); m_makingSelection = false; // if m_selection=NULL, the user didn't move the mouse far enough from // starting point and the mouse up event is part of a click, the user // is not selecting text: if ( m_selection ) { CopySelection(Primary); // we don't want mouse up event that ended selecting to be // handled as mouse click and e.g. follow hyperlink: return; } } #endif // wxUSE_CLIPBOARD SetFocus(); wxPoint pos = CalcUnscrolledPosition(event.GetPosition()); wxHtmlWindowMouseHelper::HandleMouseClick(m_Cell, pos, event); } #if wxUSE_CLIPBOARD void wxHtmlWindow::OnMouseCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event)) { if ( !m_makingSelection ) return; // discard the selecting operation m_makingSelection = false; wxDELETE(m_selection); m_tmpSelFromCell = NULL; Refresh(); } #endif // wxUSE_CLIPBOARD void wxHtmlWindow::OnInternalIdle() { wxWindow::OnInternalIdle(); if (m_Cell != NULL && DidMouseMove()) { #ifdef DEBUG_HTML_SELECTION Refresh(); #endif int xc, yc, x, y; wxGetMousePosition(&xc, &yc); ScreenToClient(&xc, &yc); CalcUnscrolledPosition(xc, yc, &x, &y); wxHtmlCell *cell = m_Cell->FindCellByPos(x, y); // handle selection update: if ( m_makingSelection ) { if ( !m_tmpSelFromCell ) m_tmpSelFromCell = m_Cell->FindCellByPos( m_tmpSelFromPos.x,m_tmpSelFromPos.y); // NB: a trick - we adjust selFromPos to be upper left or bottom // right corner of the first cell of the selection depending // on whether the mouse is moving to the right or to the left. // This gives us more "natural" behaviour when selecting // a line (specifically, first cell of the next line is not // included if you drag selection from left to right over // entire line): wxPoint dirFromPos; if ( !m_tmpSelFromCell ) { dirFromPos = m_tmpSelFromPos; } else { dirFromPos = m_tmpSelFromCell->GetAbsPos(); if ( x < m_tmpSelFromPos.x ) { dirFromPos.x += m_tmpSelFromCell->GetWidth(); dirFromPos.y += m_tmpSelFromCell->GetHeight(); } } bool goingDown = dirFromPos.y < y || (dirFromPos.y == y && dirFromPos.x < x); // determine selection span: if ( /*still*/ !m_tmpSelFromCell ) { if (goingDown) { m_tmpSelFromCell = m_Cell->FindCellByPos( m_tmpSelFromPos.x,m_tmpSelFromPos.y, wxHTML_FIND_NEAREST_AFTER); if (!m_tmpSelFromCell) m_tmpSelFromCell = m_Cell->GetFirstTerminal(); } else { m_tmpSelFromCell = m_Cell->FindCellByPos( m_tmpSelFromPos.x,m_tmpSelFromPos.y, wxHTML_FIND_NEAREST_BEFORE); if (!m_tmpSelFromCell) m_tmpSelFromCell = m_Cell->GetLastTerminal(); } } wxHtmlCell *selcell = cell; if (!selcell) { if (goingDown) { selcell = m_Cell->FindCellByPos(x, y, wxHTML_FIND_NEAREST_BEFORE); if (!selcell) selcell = m_Cell->GetLastTerminal(); } else { selcell = m_Cell->FindCellByPos(x, y, wxHTML_FIND_NEAREST_AFTER); if (!selcell) selcell = m_Cell->GetFirstTerminal(); } } // NB: it may *rarely* happen that the code above didn't find one // of the cells, e.g. if wxHtmlWindow doesn't contain any // visible cells. if ( selcell && m_tmpSelFromCell ) { if ( !m_selection ) { // start selecting only if mouse movement was big enough // (otherwise it was meant as mouse click, not selection): const int PRECISION = 2; wxPoint diff = m_tmpSelFromPos - wxPoint(x,y); if (abs(diff.x) > PRECISION || abs(diff.y) > PRECISION) { m_selection = new wxHtmlSelection(); } } if ( m_selection ) { if ( m_tmpSelFromCell->IsBefore(selcell) ) { m_selection->Set(m_tmpSelFromPos, m_tmpSelFromCell, wxPoint(x,y), selcell); } else { m_selection->Set(wxPoint(x,y), selcell, m_tmpSelFromPos, m_tmpSelFromCell); } m_selection->ClearPrivPos(); Refresh(); } } } // handle cursor and status bar text changes: // NB: because we're passing in 'cell' and not 'm_Cell' (so that the // leaf cell lookup isn't done twice), we need to adjust the // position for the new root: wxPoint posInCell(x, y); if (cell) posInCell -= cell->GetAbsPos(); wxHtmlWindowMouseHelper::HandleIdle(cell, posInCell); } } #if wxUSE_CLIPBOARD void wxHtmlWindow::StopAutoScrolling() { if ( m_timerAutoScroll ) { wxDELETE(m_timerAutoScroll); } } void wxHtmlWindow::OnMouseEnter(wxMouseEvent& event) { StopAutoScrolling(); event.Skip(); } void wxHtmlWindow::OnMouseLeave(wxMouseEvent& event) { // don't prevent the usual processing of the event from taking place event.Skip(); // when a captured mouse leave a scrolled window we start generate // scrolling events to allow, for example, extending selection beyond the // visible area in some controls if ( wxWindow::GetCapture() == this ) { // where is the mouse leaving? int pos, orient; wxPoint pt = event.GetPosition(); if ( pt.x < 0 ) { orient = wxHORIZONTAL; pos = 0; } else if ( pt.y < 0 ) { orient = wxVERTICAL; pos = 0; } else // we're lower or to the right of the window { wxSize size = GetClientSize(); if ( pt.x > size.x ) { orient = wxHORIZONTAL; pos = GetVirtualSize().x / wxHTML_SCROLL_STEP; } else if ( pt.y > size.y ) { orient = wxVERTICAL; pos = GetVirtualSize().y / wxHTML_SCROLL_STEP; } else // this should be impossible { // but seems to happen sometimes under wxMSW - maybe it's a bug // there but for now just ignore it //wxFAIL_MSG( _T("can't understand where has mouse gone") ); return; } } // only start the auto scroll timer if the window can be scrolled in // this direction if ( !HasScrollbar(orient) ) return; delete m_timerAutoScroll; m_timerAutoScroll = new wxHtmlWinAutoScrollTimer ( this, pos == 0 ? wxEVT_SCROLLWIN_LINEUP : wxEVT_SCROLLWIN_LINEDOWN, pos, orient ); m_timerAutoScroll->Start(50); // FIXME: make configurable } } void wxHtmlWindow::OnKeyUp(wxKeyEvent& event) { if ( IsSelectionEnabled() && (event.GetKeyCode() == 'C' && event.CmdDown()) ) { wxClipboardTextEvent evt(wxEVT_COMMAND_TEXT_COPY, GetId()); evt.SetEventObject(this); GetEventHandler()->ProcessEvent(evt); } } void wxHtmlWindow::OnCopy(wxCommandEvent& WXUNUSED(event)) { (void) CopySelection(); } void wxHtmlWindow::OnClipboardEvent(wxClipboardTextEvent& WXUNUSED(event)) { (void) CopySelection(); } void wxHtmlWindow::OnDoubleClick(wxMouseEvent& event) { // select word under cursor: if ( IsSelectionEnabled() ) { SelectWord(CalcUnscrolledPosition(event.GetPosition())); (void) CopySelection(Primary); m_lastDoubleClick = wxGetLocalTimeMillis(); } else event.Skip(); } void wxHtmlWindow::SelectWord(const wxPoint& pos) { if ( m_Cell ) { wxHtmlCell *cell = m_Cell->FindCellByPos(pos.x, pos.y); if ( cell ) { delete m_selection; m_selection = new wxHtmlSelection(); m_selection->Set(cell, cell); RefreshRect(wxRect(CalcScrolledPosition(cell->GetAbsPos()), wxSize(cell->GetWidth(), cell->GetHeight()))); } } } void wxHtmlWindow::SelectLine(const wxPoint& pos) { if ( m_Cell ) { wxHtmlCell *cell = m_Cell->FindCellByPos(pos.x, pos.y); if ( cell ) { // We use following heuristic to find a "line": let the line be all // cells in same container as the cell under mouse cursor that are // neither completely above nor completely bellow the clicked cell // (i.e. are likely to be words positioned on same line of text). int y1 = cell->GetAbsPos().y; int y2 = y1 + cell->GetHeight(); int y; const wxHtmlCell *c; const wxHtmlCell *before = NULL; const wxHtmlCell *after = NULL; // find last cell of line: for ( c = cell->GetNext(); c; c = c->GetNext()) { y = c->GetAbsPos().y; if ( y + c->GetHeight() > y1 && y < y2 ) after = c; else break; } if ( !after ) after = cell; // find first cell of line: for ( c = cell->GetParent()->GetFirstChild(); c && c != cell; c = c->GetNext()) { y = c->GetAbsPos().y; if ( y + c->GetHeight() > y1 && y < y2 ) { if ( ! before ) before = c; } else before = NULL; } if ( !before ) before = cell; delete m_selection; m_selection = new wxHtmlSelection(); m_selection->Set(before, after); Refresh(); } } } void wxHtmlWindow::SelectAll() { if ( m_Cell ) { delete m_selection; m_selection = new wxHtmlSelection(); m_selection->Set(m_Cell->GetFirstTerminal(), m_Cell->GetLastTerminal()); Refresh(); } } #endif // wxUSE_CLIPBOARD IMPLEMENT_ABSTRACT_CLASS(wxHtmlProcessor,wxObject) #if wxUSE_EXTENDED_RTTI IMPLEMENT_DYNAMIC_CLASS_XTI(wxHtmlWindow, wxScrolledWindow,"wx/html/htmlwin.h") wxBEGIN_PROPERTIES_TABLE(wxHtmlWindow) /* TODO PROPERTIES style , wxHW_SCROLLBAR_AUTO borders , (dimension) url , string htmlcode , string */ wxEND_PROPERTIES_TABLE() wxBEGIN_HANDLERS_TABLE(wxHtmlWindow) wxEND_HANDLERS_TABLE() wxCONSTRUCTOR_5( wxHtmlWindow , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle ) #else IMPLEMENT_DYNAMIC_CLASS(wxHtmlWindow,wxScrolledWindow) #endif BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow) EVT_SIZE(wxHtmlWindow::OnSize) EVT_LEFT_DOWN(wxHtmlWindow::OnMouseDown) EVT_LEFT_UP(wxHtmlWindow::OnMouseUp) EVT_RIGHT_UP(wxHtmlWindow::OnMouseUp) EVT_MOTION(wxHtmlWindow::OnMouseMove) EVT_ERASE_BACKGROUND(wxHtmlWindow::OnEraseBackground) EVT_PAINT(wxHtmlWindow::OnPaint) #if wxUSE_CLIPBOARD EVT_LEFT_DCLICK(wxHtmlWindow::OnDoubleClick) EVT_ENTER_WINDOW(wxHtmlWindow::OnMouseEnter) EVT_LEAVE_WINDOW(wxHtmlWindow::OnMouseLeave) EVT_MOUSE_CAPTURE_LOST(wxHtmlWindow::OnMouseCaptureLost) EVT_KEY_UP(wxHtmlWindow::OnKeyUp) EVT_MENU(wxID_COPY, wxHtmlWindow::OnCopy) EVT_TEXT_COPY(wxID_ANY, wxHtmlWindow::OnClipboardEvent) #endif // wxUSE_CLIPBOARD END_EVENT_TABLE() //----------------------------------------------------------------------------- // wxHtmlWindowInterface implementation in wxHtmlWindow //----------------------------------------------------------------------------- void wxHtmlWindow::SetHTMLWindowTitle(const wxString& title) { OnSetTitle(title); } void wxHtmlWindow::OnHTMLLinkClicked(const wxHtmlLinkInfo& link) { OnLinkClicked(link); } wxHtmlOpeningStatus wxHtmlWindow::OnHTMLOpeningURL(wxHtmlURLType type, const wxString& url, wxString *redirect) const { return OnOpeningURL(type, url, redirect); } wxPoint wxHtmlWindow::HTMLCoordsToWindow(wxHtmlCell *WXUNUSED(cell), const wxPoint& pos) const { return CalcScrolledPosition(pos); } wxWindow* wxHtmlWindow::GetHTMLWindow() { return this; } wxColour wxHtmlWindow::GetHTMLBackgroundColour() const { return GetBackgroundColour(); } void wxHtmlWindow::SetHTMLBackgroundColour(const wxColour& clr) { SetBackgroundColour(clr); } void wxHtmlWindow::SetHTMLBackgroundImage(const wxBitmap& bmpBg) { SetBackgroundImage(bmpBg); } void wxHtmlWindow::SetHTMLStatusText(const wxString& text) { #if wxUSE_STATUSBAR if (m_RelatedStatusBar != -1) m_RelatedFrame->SetStatusText(text, m_RelatedStatusBar); #else wxUnusedVar(text); #endif // wxUSE_STATUSBAR } /*static*/ wxCursor wxHtmlWindow::GetDefaultHTMLCursor(HTMLCursor type) { switch (type) { case HTMLCursor_Link: if ( !ms_cursorLink ) ms_cursorLink = new wxCursor(wxCURSOR_HAND); return *ms_cursorLink; case HTMLCursor_Text: if ( !ms_cursorText ) ms_cursorText = new wxCursor(wxCURSOR_IBEAM); return *ms_cursorText; case HTMLCursor_Default: default: return *wxSTANDARD_CURSOR; } } wxCursor wxHtmlWindow::GetHTMLCursor(HTMLCursor type) const { return GetDefaultHTMLCursor(type); } //----------------------------------------------------------------------------- // wxHtmlWinModule //----------------------------------------------------------------------------- // 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 // wxUSE_HTML