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eba0e3477b86231780dbd12f70a07c032c66088c
wxWidgets/src/html/htmlwin.cpp
Václav Slavík 4f9297b0ee wxHTML src code indentation now conforms (more) to wxWin coding style 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8694 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2000-11-05 14:59:59 +00:00

640 lines
15 KiB
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/////////////////////////////////////////////////////////////////////////////
// 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 && wxUSE_STREAMS
#ifdef __BORDLANDC__
#pragma hdrstop
#endif
#ifndef WXPRECOMP
#include "wx/wx.h"
#endif
#include "wx/html/htmlwin.h"
#include "wx/html/forcelnk.h"
#include "wx/log.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, style | wxVSCROLL | wxHSCROLL, 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(wxT("<html><body></body></html>"));
}
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("<html><body></body></html>")); // 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;
bool needs_refresh = FALSE;
SetCursor(*wxHOURGLASS_CURSOR);
wxYield(); Refresh(FALSE);
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] == 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_FS->OpenFile(location);
if (f == NULL)
{
wxString err;
wxLogError(_("Unable to open requested HTML document: %s"), location.c_str());
m_tmpCanDrawLocks--;
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(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)
{
wxYield();
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);
m_HistoryPos++;
for (int i = 0; i < c; i++)
m_History.Remove(m_HistoryPos);
m_History.Add(new HtmlHistoryItem(m_OpenedPage, m_OpenedAnchor));
}
if (m_OpenedPageTitle == wxEmptyString)
OnSetTitle(wxFileNameFromPath(m_OpenedPage));
SetCursor(*wxSTANDARD_CURSOR);
if (needs_refresh)
{
wxYield();
m_tmpCanDrawLocks--;
Refresh();
}
else
m_tmpCanDrawLocks--;
return rt_val;
}
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("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;
// store scroll position into history item:
int x, y;
ViewStart(&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;
wxYield();
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;
wxYield();
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;
}
wxList wxHtmlWindow::m_Filters;
wxHtmlFilter *wxHtmlWindow::m_DefaultFilter = NULL;
wxCursor *wxHtmlWindow::s_cur_hand = NULL;
wxCursor *wxHtmlWindow::s_cur_arrow = NULL;
void wxHtmlWindow::CleanUpStatics()
{
if (m_DefaultFilter) delete m_DefaultFilter;
m_DefaultFilter = NULL;
m_Filters.DeleteContents(TRUE);
m_Filters.Clear();
if (s_cur_hand) delete s_cur_hand;
if (s_cur_arrow) delete s_cur_arrow;
}
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 0
/* VS - I don't think this is neccessary any longer
MSC_VER 1200 means MSVC 6.0 and it works fine */
#if defined(_MSC_VER) && (_MSC_VER == 1200)
::SetMapMode((HDC)dc.GetHDC(), MM_TEXT);
#endif
#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();
Refresh();
}
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)
{
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;
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(*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_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)
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)
FORCE_LINK(m_meta)
#endif
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