///////////////////////////////////////////////////////////////////////////// // Name: htmlwin.cpp // Purpose: wxHtmlWindow class for parsing & displaying HTML (implementation) // Author: Vaclav Slavik // RCS-ID: $Id$ // Copyright: (c) 1999 Vaclav Slavik // Licence: wxWindows Licence ///////////////////////////////////////////////////////////////////////////// #ifdef __GNUG__ #pragma implementation #endif #include "wx/wxprec.h" #include "wx/defs.h" #if wxUSE_HTML #ifdef __BORDLANDC__ #pragma hdrstop #endif #ifndef WXPRECOMP #include "wx/wx.h" #endif #include "wx/html/htmlwin.h" #include "wx/html/forcelnk.h" //----------------------------------------------------------------------------- // wxHtmlWindow //----------------------------------------------------------------------------- #include "wx/arrimpl.cpp" WX_DEFINE_OBJARRAY(HtmlHistoryArray) wxHtmlWindow::wxHtmlWindow(wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style, const wxString& name) : wxScrolledWindow(parent, id, pos, size, wxVSCROLL, name) { m_tmpMouseMoved = FALSE; m_tmpLastLink = NULL; m_tmpCanDrawLocks = 0; m_FS = new wxFileSystem(); m_RelatedStatusBar = -1; m_RelatedFrame = NULL; m_TitleFormat = "%s"; m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString; m_Cell = NULL; m_Parser = new wxHtmlWinParser(this); m_Parser -> SetFS(m_FS); SetBorders(10); m_HistoryPos = -1; m_HistoryOn = TRUE; m_Style = style; SetPage(""); } wxHtmlWindow::~wxHtmlWindow() { HistoryClear(); if (m_Cell) delete m_Cell; delete m_Parser; delete m_FS; } 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); SetPage(wxT("")); // fonts changed => contents invalid if (!op.IsEmpty()) LoadPage(op); } bool wxHtmlWindow::SetPage(const wxString& source) { 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(source); 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::LoadPage(const wxString& location) { wxFSFile *f; bool rt_val; SetCursor(*wxHOURGLASS_CURSOR); wxYield(); m_tmpCanDrawLocks++; if (m_HistoryOn && (m_HistoryPos != -1)) { // store scroll position into history item int x, y; ViewStart(&x, &y); m_History[m_HistoryPos].SetPos(y); } if (location[0] == '#') { // local anchor wxString anch = location.Mid(1) /*1 to end*/; m_tmpCanDrawLocks--; rt_val = ScrollToAnchor(anch); } else { // load&display it: if (m_RelatedStatusBar != -1) { m_RelatedFrame -> SetStatusText(_("Connecting..."), m_RelatedStatusBar); Refresh(); } f = m_FS -> OpenFile(location); if (f == NULL) { wxString err; err.Printf(_("The browser is unable to open requested location :\n\n%s"), WXSTRINGCAST location); m_tmpCanDrawLocks--; Refresh(); wxMessageBox(err, "Error"); SetCursor(*wxSTANDARD_CURSOR); return FALSE; } else { wxNode *node; wxString src = wxEmptyString; if (m_RelatedStatusBar != -1) { wxString msg = _("Loading : ") + location; m_RelatedFrame -> SetStatusText(msg, m_RelatedStatusBar); Refresh(); } 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) { // m_tmpCanDrawLocks--; ScrollToAnchor(f -> GetAnchor()); // m_tmpCanDrawLocks++; } 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); m_HistoryPos++; for (int i = 0; i < c; i++) m_History.Remove(m_HistoryPos); m_History.Add(new HtmlHistoryItem(m_OpenedPage, m_OpenedAnchor)); } SetCursor(*wxSTANDARD_CURSOR); wxYield(); m_tmpCanDrawLocks--; Refresh(); return rt_val; } bool wxHtmlWindow::ScrollToAnchor(const wxString& anchor) { const wxHtmlCell *c = m_Cell -> Find(wxHTML_COND_ISANCHOR, &anchor); if (!c) 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); #ifndef __WXMSW__ // VS : this looks extremely ugly under windoze, better fix needed! SetScrollbars(wxHTML_SCROLL_STEP, 1, m_Cell -> GetWidth() / wxHTML_SCROLL_STEP, ClientHeight * 2); // always on #endif GetClientSize(&ClientWidth, &ClientHeight); m_Cell -> Layout(ClientWidth); if (ClientHeight < m_Cell -> GetHeight()) { SetScrollbars(wxHTML_SCROLL_STEP, wxHTML_SCROLL_STEP, m_Cell -> GetWidth() / wxHTML_SCROLL_STEP, m_Cell -> GetHeight() / 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("wxHtmlWindow/Borders", m_Borders); p_fff = cfg -> Read("wxHtmlWindow/FontFaceFixed", m_Parser -> m_FontFaceFixed); p_ffn = cfg -> Read("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("wxHtmlWindow/Borders", (long) m_Borders); cfg -> Write("wxHtmlWindow/FontFaceFixed", m_Parser -> m_FontFaceFixed); cfg -> Write("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; 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 + "#" + a); m_HistoryOn = TRUE; wxYield(); m_tmpCanDrawLocks--; Scroll(0, m_History[m_HistoryPos].GetPos()); Refresh(); 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 + "#" + a); m_HistoryOn = TRUE; wxYield(); m_tmpCanDrawLocks--; Scroll(0, m_History[m_HistoryPos].GetPos()); Refresh(); return TRUE; } void wxHtmlWindow::HistoryClear() { m_History.Empty(); m_HistoryPos = -1; } wxList wxHtmlWindow::m_Filters; wxHtmlFilter *wxHtmlWindow::m_DefaultFilter = NULL; void wxHtmlWindow::CleanUpStatics() { if (m_DefaultFilter) delete m_DefaultFilter; m_DefaultFilter = NULL; m_Filters.DeleteContents(TRUE); m_Filters.Clear(); } void wxHtmlWindow::AddFilter(wxHtmlFilter *filter) { m_Filters.Append(filter); } void wxHtmlWindow::OnLinkClicked(const wxHtmlLinkInfo& link) { LoadPage(link.GetHref()); } void wxHtmlWindow::OnDraw(wxDC& dc) { int x, y; wxRegionIterator upd(GetUpdateRegion()); // get the update rect list int v_y, v_h; if (m_tmpCanDrawLocks > 0) return; dc.SetMapMode(wxMM_TEXT); #if defined(_MSC_VER) && (_MSC_VER == 1200) ::SetMapMode((HDC)dc.GetHDC(), MM_TEXT); #endif dc.SetBackgroundMode(wxTRANSPARENT); ViewStart(&x, &y); while (upd) { v_y = upd.GetY(); v_h = upd.GetH(); if (m_Cell) m_Cell -> Draw(dc, 0, 0, y * wxHTML_SCROLL_STEP + v_y, y * wxHTML_SCROLL_STEP + v_h + v_y); upd++; } } void wxHtmlWindow::OnSize(wxSizeEvent& event) { wxScrolledWindow::OnSize(event); CreateLayout(); } void wxHtmlWindow::OnKeyDown(wxKeyEvent& event) { int dummy; int sty, szy, cliy; ViewStart(&dummy, &sty); GetClientSize(&dummy, &cliy); cliy /= wxHTML_SCROLL_STEP; GetVirtualSize(&dummy, &szy); szy /= wxHTML_SCROLL_STEP; switch (event.KeyCode()) { case WXK_PAGEUP : case WXK_PRIOR : Scroll(-1, sty - cliy); break; case WXK_PAGEDOWN : case WXK_NEXT : Scroll(-1, sty + cliy); break; case WXK_HOME : Scroll(-1, 0); break; case WXK_END : Scroll(-1, szy - cliy); break; case WXK_UP : Scroll(-1, sty - 1); break; case WXK_DOWN : Scroll(-1, sty + 1); break; } } void wxHtmlWindow::OnMouseEvent(wxMouseEvent& event) { m_tmpMouseMoved = TRUE; if (event.ButtonDown()) { int sx, sy; wxPoint pos; wxString lnk; ViewStart(&sx, &sy); sx *= wxHTML_SCROLL_STEP; sy *= wxHTML_SCROLL_STEP; pos = event.GetPosition(); if (m_Cell) m_Cell -> OnMouseClick(this, sx + pos.x, sy + pos.y, event); } } void wxHtmlWindow::OnIdle(wxIdleEvent& event) { static wxCursor cur_hand(wxCURSOR_HAND), cur_arrow(wxCURSOR_ARROW); if (m_tmpMouseMoved && (m_Cell != NULL)) { int sx, sy; int x, y; wxHtmlLinkInfo *lnk; ViewStart(&sx, &sy); sx *= wxHTML_SCROLL_STEP; sy *= wxHTML_SCROLL_STEP; wxGetMousePosition(&x, &y); ScreenToClient(&x, &y); lnk = m_Cell -> GetLink(sx + x, sy + y); if (lnk != m_tmpLastLink) { if (lnk == NULL) { SetCursor(cur_arrow); if (m_RelatedStatusBar != -1) m_RelatedFrame -> SetStatusText(wxEmptyString, m_RelatedStatusBar); } else { SetCursor(cur_hand); if (m_RelatedStatusBar != -1) m_RelatedFrame -> SetStatusText(lnk -> GetHref(), m_RelatedStatusBar); } m_tmpLastLink = lnk; } m_tmpMouseMoved = FALSE; } } IMPLEMENT_DYNAMIC_CLASS(wxHtmlWindow,wxScrolledWindow) BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow) EVT_SIZE(wxHtmlWindow::OnSize) EVT_LEFT_DOWN(wxHtmlWindow::OnMouseEvent) EVT_MOTION(wxHtmlWindow::OnMouseEvent) EVT_IDLE(wxHtmlWindow::OnIdle) EVT_KEY_DOWN(wxHtmlWindow::OnKeyDown) 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) ///// default mod handlers are forced there: FORCE_LINK(m_layout) FORCE_LINK(m_fonts) FORCE_LINK(m_image) FORCE_LINK(m_list) FORCE_LINK(m_dflist) FORCE_LINK(m_pre) FORCE_LINK(m_hline) FORCE_LINK(m_links) FORCE_LINK(m_tables) #endif