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winpars.cpp
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2002-07-01
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/////////////////////////////////////////////////////////////////////////////
// Name: winpars.cpp
// Purpose: wxHtmlParser class (generic parser)
// Author: Vaclav Slavik
// RCS-ID: $Id: winpars.cpp,v 1.35 2002/06/26 19:11:32 VS Exp $
// Copyright: (c) 1999 Vaclav Slavik
// Licence: wxWindows Licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation "winpars.h"
#endif
#include "wx/wxprec.h"
#include "wx/defs.h"
#if wxUSE_HTML && wxUSE_STREAMS
#ifdef __BORDLANDC__
#pragma hdrstop
#endif
#ifndef WXPRECOMP
#include "wx/intl.h"
#include "wx/dc.h"
#endif
#include "wx/html/htmldefs.h"
#include "wx/html/winpars.h"
#include "wx/html/htmlwin.h"
#include "wx/fontmap.h"
#include "wx/log.h"
//-----------------------------------------------------------------------------
// wxHtmlWinParser
//-----------------------------------------------------------------------------
wxList wxHtmlWinParser::m_Modules;
wxHtmlWinParser::wxHtmlWinParser(wxHtmlWindow *wnd) : wxHtmlParser()
{
m_tmpStrBuf = NULL;
m_tmpStrBufSize = 0;
m_Window = wnd;
m_Container = NULL;
m_DC = NULL;
m_CharHeight = m_CharWidth = 0;
m_UseLink = FALSE;
m_EncConv = NULL;
m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
{
int i, j, k, l, m;
for (i = 0; i < 2; i++)
for (j = 0; j < 2; j++)
for (k = 0; k < 2; k++)
for (l = 0; l < 2; l++)
for (m = 0; m < 7; m++)
{
m_FontsTable[i][j][k][l][m] = NULL;
m_FontsFacesTable[i][j][k][l][m] = wxEmptyString;
m_FontsEncTable[i][j][k][l][m] = wxFONTENCODING_DEFAULT;
}
#ifdef __WXMSW__
static int default_sizes[7] = {7, 8, 10, 12, 16, 22, 30};
#elif defined(__WXMAC__)
static int default_sizes[7] = {9, 12, 14, 18, 24, 30, 36};
#else
static int default_sizes[7] = {10, 12, 14, 16, 19, 24, 32};
#endif
SetFonts("", "", default_sizes);
}
// fill in wxHtmlParser's tables:
wxNode *node = m_Modules.GetFirst();
while (node)
{
wxHtmlTagsModule *mod = (wxHtmlTagsModule*) node->GetData();
mod->FillHandlersTable(this);
node = node->GetNext();
}
}
wxHtmlWinParser::~wxHtmlWinParser()
{
int i, j, k, l, m;
for (i = 0; i < 2; i++)
for (j = 0; j < 2; j++)
for (k = 0; k < 2; k++)
for (l = 0; l < 2; l++)
for (m = 0; m < 7; m++)
{
if (m_FontsTable[i][j][k][l][m] != NULL)
delete m_FontsTable[i][j][k][l][m];
}
delete m_EncConv;
delete[] m_tmpStrBuf;
}
void wxHtmlWinParser::AddModule(wxHtmlTagsModule *module)
{
m_Modules.Append(module);
}
void wxHtmlWinParser::RemoveModule(wxHtmlTagsModule *module)
{
m_Modules.DeleteObject(module);
}
void wxHtmlWinParser::SetFonts(wxString normal_face, wxString fixed_face, const int *sizes)
{
int i, j, k, l, m;
for (i = 0; i < 7; i++) m_FontsSizes[i] = sizes[i];
m_FontFaceFixed = fixed_face;
m_FontFaceNormal = normal_face;
SetInputEncoding(m_InputEnc);
for (i = 0; i < 2; i++)
for (j = 0; j < 2; j++)
for (k = 0; k < 2; k++)
for (l = 0; l < 2; l++)
for (m = 0; m < 7; m++) {
if (m_FontsTable[i][j][k][l][m] != NULL)
{
delete m_FontsTable[i][j][k][l][m];
m_FontsTable[i][j][k][l][m] = NULL;
}
}
}
void wxHtmlWinParser::InitParser(const wxString& source)
{
wxHtmlParser::InitParser(source);
wxASSERT_MSG(m_DC != NULL, _T("no DC assigned to wxHtmlWinParser!!"));
m_FontBold = m_FontItalic = m_FontUnderlined = m_FontFixed = FALSE;
m_FontSize = 3; //default one
CreateCurrentFont(); // we're selecting default font into
m_DC->GetTextExtent("H", &m_CharWidth, &m_CharHeight);
/* NOTE : we're not using GetCharWidth/Height() because
of differences under X and win
*/
m_UseLink = FALSE;
m_Link = wxHtmlLinkInfo("", "");
m_LinkColor.Set(0, 0, 0xFF);
m_ActualColor.Set(0, 0, 0);
m_Align = wxHTML_ALIGN_LEFT;
m_tmpLastWasSpace = FALSE;
OpenContainer();
OpenContainer();
m_Container->InsertCell(new wxHtmlColourCell(m_ActualColor));
m_Container->InsertCell(new wxHtmlFontCell(CreateCurrentFont()));
}
void wxHtmlWinParser::DoneParser()
{
m_Container = NULL;
SetInputEncoding(wxFONTENCODING_DEFAULT); // for next call
wxHtmlParser::DoneParser();
}
wxObject* wxHtmlWinParser::GetProduct()
{
wxHtmlContainerCell *top;
CloseContainer();
OpenContainer();
top = m_Container;
while (top->GetParent()) top = top->GetParent();
return top;
}
wxFSFile *wxHtmlWinParser::OpenURL(wxHtmlURLType type,
const wxString& url) const
{
// FIXME - normalize the URL to full path before passing to
// OnOpeningURL!!
if ( m_Window )
{
wxString myurl(url);
wxHtmlOpeningStatus status;
for (;;)
{
wxString redirect;
status = m_Window->OnOpeningURL(type, myurl, &redirect);
if ( status != wxHTML_REDIRECT )
break;
myurl = redirect;
}
if ( status == wxHTML_BLOCK )
return NULL;
return GetFS()->OpenFile(myurl);
}
return wxHtmlParser::OpenURL(type, url);
}
void wxHtmlWinParser::AddText(const wxChar* txt)
{
wxHtmlCell *c;
size_t i = 0,
x,
lng = wxStrlen(txt);
register wxChar d;
int templen = 0;
wxChar nbsp = GetEntitiesParser()->GetCharForCode(160 /* nbsp */);
if (lng+1 > m_tmpStrBufSize)
{
delete[] m_tmpStrBuf;
m_tmpStrBuf = new wxChar[lng+1];
m_tmpStrBufSize = lng+1;
}
wxChar *temp = m_tmpStrBuf;
if (m_tmpLastWasSpace)
{
while ((i < lng) &&
((txt[i] == wxT('\n')) || (txt[i] == wxT('\r')) || (txt[i] == wxT(' ')) ||
(txt[i] == wxT('\t')))) i++;
}
while (i < lng)
{
x = 0;
d = temp[templen++] = txt[i];
if ((d == wxT('\n')) || (d == wxT('\r')) || (d == wxT(' ')) || (d == wxT('\t')))
{
i++, x++;
while ((i < lng) && ((txt[i] == wxT('\n')) || (txt[i] == wxT('\r')) ||
(txt[i] == wxT(' ')) || (txt[i] == wxT('\t')))) i++, x++;
}
else i++;
if (x)
{
temp[templen-1] = wxT(' ');
temp[templen] = 0;
#if 0 // VS - WHY was this here?!
if (templen == 1) continue;
#endif
templen = 0;
if (m_EncConv)
m_EncConv->Convert(temp);
size_t len = wxStrlen(temp);
for (size_t j = 0; j < len; j++)
if (temp[j] == nbsp)
temp[j] = wxT(' ');
c = new wxHtmlWordCell(temp, *(GetDC()));
if (m_UseLink)
c->SetLink(m_Link);
m_Container->InsertCell(c);
m_tmpLastWasSpace = TRUE;
}
}
if (templen && (templen > 1 || temp[0] != wxT(' ')))
{
temp[templen] = 0;
if (m_EncConv)
m_EncConv->Convert(temp);
size_t len = wxStrlen(temp);
for (size_t j = 0; j < len; j++)
if (temp[j] == nbsp)
temp[j] = wxT(' ');
c = new wxHtmlWordCell(temp, *(GetDC()));
if (m_UseLink)
c->SetLink(m_Link);
m_Container->InsertCell(c);
m_tmpLastWasSpace = FALSE;
}
}
wxHtmlContainerCell* wxHtmlWinParser::OpenContainer()
{
m_Container = new wxHtmlContainerCell(m_Container);
m_Container->SetAlignHor(m_Align);
m_tmpLastWasSpace = TRUE;
/* to avoid space being first character in paragraph */
return m_Container;
}
wxHtmlContainerCell* wxHtmlWinParser::SetContainer(wxHtmlContainerCell *c)
{
m_tmpLastWasSpace = TRUE;
/* to avoid space being first character in paragraph */
return m_Container = c;
}
wxHtmlContainerCell* wxHtmlWinParser::CloseContainer()
{
m_Container = m_Container->GetParent();
return m_Container;
}
void wxHtmlWinParser::SetFontSize(int s)
{
if (s < 1) s = 1;
else if (s > 7) s = 7;
m_FontSize = s;
}
wxFont* wxHtmlWinParser::CreateCurrentFont()
{
int fb = GetFontBold(),
fi = GetFontItalic(),
fu = GetFontUnderlined(),
ff = GetFontFixed(),
fs = GetFontSize() - 1 /*remap from <1;7> to <0;6>*/ ;
wxString face = ff ? m_FontFaceFixed : m_FontFaceNormal;
wxString *faceptr = &(m_FontsFacesTable[fb][fi][fu][ff][fs]);
wxFont **fontptr = &(m_FontsTable[fb][fi][fu][ff][fs]);
wxFontEncoding *encptr = &(m_FontsEncTable[fb][fi][fu][ff][fs]);
if (*fontptr != NULL && (*faceptr != face || *encptr != m_OutputEnc))
{
delete *fontptr;
*fontptr = NULL;
}
if (*fontptr == NULL)
{
*faceptr = face;
*encptr = m_OutputEnc;
*fontptr = new wxFont(
(int) (m_FontsSizes[fs] * m_PixelScale),
ff ? wxMODERN : wxSWISS,
fi ? wxITALIC : wxNORMAL,
fb ? wxBOLD : wxNORMAL,
fu ? TRUE : FALSE, face,
m_OutputEnc);
}
m_DC->SetFont(**fontptr);
return (*fontptr);
}
void wxHtmlWinParser::SetLink(const wxHtmlLinkInfo& link)
{
m_Link = link;
m_UseLink = (link.GetHref() != wxEmptyString);
}
void wxHtmlWinParser::SetFontFace(const wxString& face)
{
if (GetFontFixed()) m_FontFaceFixed = face;
else m_FontFaceNormal = face;
if (m_InputEnc != wxFONTENCODING_DEFAULT)
SetInputEncoding(m_InputEnc);
}
void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
{
m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
if (m_EncConv)
{
delete m_EncConv;
m_EncConv = NULL;
}
if (enc == wxFONTENCODING_DEFAULT) return;
wxFontEncoding altfix, altnorm;
bool availfix, availnorm;
// exact match?
availnorm = wxFontMapper::Get()->IsEncodingAvailable(enc, m_FontFaceNormal);
availfix = wxFontMapper::Get()->IsEncodingAvailable(enc, m_FontFaceFixed);
if (availnorm && availfix)
m_OutputEnc = enc;
// alternatives?
else if (wxFontMapper::Get()->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, FALSE) &&
wxFontMapper::Get()->GetAltForEncoding(enc, &altfix, m_FontFaceFixed, FALSE) &&
altnorm == altfix)
m_OutputEnc = altnorm;
// at least normal face?
else if (availnorm)
m_OutputEnc = enc;
else if (wxFontMapper::Get()->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, FALSE))
m_OutputEnc = altnorm;
// okay, let convert to ISO_8859-1, available always
else
m_OutputEnc = wxFONTENCODING_DEFAULT;
m_InputEnc = enc;
if (m_OutputEnc == wxFONTENCODING_DEFAULT)
GetEntitiesParser()->SetEncoding(wxFONTENCODING_SYSTEM);
else
GetEntitiesParser()->SetEncoding(m_OutputEnc);
if (m_InputEnc == m_OutputEnc) return;
m_EncConv = new wxEncodingConverter();
if (!m_EncConv->Init(m_InputEnc,
(m_OutputEnc == wxFONTENCODING_DEFAULT) ?
wxFONTENCODING_ISO8859_1 : m_OutputEnc,
wxCONVERT_SUBSTITUTE))
{ // total failture :-(
wxLogError(_("Failed to display HTML document in %s encoding"),
wxFontMapper::GetEncodingName(enc).c_str());
m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
delete m_EncConv;
m_EncConv = NULL;
}
}
//-----------------------------------------------------------------------------
// wxHtmlWinTagHandler
//-----------------------------------------------------------------------------
IMPLEMENT_ABSTRACT_CLASS(wxHtmlWinTagHandler, wxHtmlTagHandler)
//-----------------------------------------------------------------------------
// wxHtmlTagsModule
//-----------------------------------------------------------------------------
// NB: This is *NOT* winpars.cpp's initialization and shutdown code!!
// This module is an ancestor for tag handlers modules defined
// in m_*.cpp files with TAGS_MODULE_BEGIN...TAGS_MODULE_END construct.
//
// Do not add any winpars.cpp shutdown or initialization code to it,
// create a new module instead!
IMPLEMENT_DYNAMIC_CLASS(wxHtmlTagsModule, wxModule)
bool wxHtmlTagsModule::OnInit()
{
wxHtmlWinParser::AddModule(this);
return TRUE;
}
void wxHtmlTagsModule::OnExit()
{
wxHtmlWinParser::RemoveModule(this);
}
#endif