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5620726fd7825d039f8cd6bd375cf27c44fa6a58
wxWidgets/src/html/winpars.cpp
Robert Roebling 5620726fd7 Compilo. 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45816 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2007-05-05 10:27:42 +00:00

633 lines
17 KiB
C++
Raw Blame History

/////////////////////////////////////////////////////////////////////////////
// Name: src/html/winpars.cpp
// Purpose: wxHtmlParser class (generic parser)
// Author: Vaclav Slavik
// RCS-ID: $Id$
// Copyright: (c) 1999 Vaclav Slavik
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_HTML && wxUSE_STREAMS
#ifndef WX_PRECOMP
#include "wx/intl.h"
#include "wx/dc.h"
#include "wx/log.h"
#include "wx/settings.h"
#endif
#include "wx/html/htmldefs.h"
#include "wx/html/winpars.h"
#include "wx/html/htmlwin.h"
#include "wx/fontmap.h"
#include "wx/uri.h"
//-----------------------------------------------------------------------------
// wxHtmlWinParser
//-----------------------------------------------------------------------------
IMPLEMENT_ABSTRACT_CLASS(wxHtmlWinParser, wxHtmlParser)
wxList wxHtmlWinParser::m_Modules;
wxHtmlWinParser::wxHtmlWinParser(wxHtmlWindowInterface *wndIface)
{
m_tmpStrBuf = NULL;
m_tmpStrBufSize = 0;
m_windowInterface = wndIface;
m_Container = NULL;
m_DC = NULL;
m_CharHeight = m_CharWidth = 0;
m_UseLink = false;
#if !wxUSE_UNICODE
m_EncConv = NULL;
m_InputEnc = wxFONTENCODING_ISO8859_1;
m_OutputEnc = wxFONTENCODING_DEFAULT;
#endif
m_lastWordCell = NULL;
{
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;
#if !wxUSE_UNICODE
m_FontsEncTable[i][j][k][l][m] = wxFONTENCODING_DEFAULT;
#endif
}
SetFonts(wxEmptyString, wxEmptyString, NULL);
}
// fill in wxHtmlParser's tables:
wxList::compatibility_iterator 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];
}
#if !wxUSE_UNICODE
delete m_EncConv;
#endif
delete[] m_tmpStrBuf;
}
void wxHtmlWinParser::AddModule(wxHtmlTagsModule *module)
{
m_Modules.Append(module);
}
void wxHtmlWinParser::RemoveModule(wxHtmlTagsModule *module)
{
m_Modules.DeleteObject(module);
}
// build all HTML font sizes (1..7) from the given base size
static void wxBuildFontSizes(int *sizes, int size)
{
// using a fixed factor (1.2, from CSS2) is a bad idea as explained at
// http://www.w3.org/TR/CSS21/fonts.html#font-size-props but this is by far
// simplest thing to do so still do it like this for now
sizes[0] = int(size * 0.75); // exception to 1.2 rule, otherwise too small
sizes[1] = int(size * 0.83);
sizes[2] = size;
sizes[3] = int(size * 1.2);
sizes[4] = int(size * 1.44);
sizes[5] = int(size * 1.73);
sizes[6] = int(size * 2);
}
static int wxGetDefaultHTMLFontSize()
{
// base the default font size on the size of the default system font but
// also ensure that we have a font of reasonable size, otherwise small HTML
// fonts are unreadable
int size = wxNORMAL_FONT->GetPointSize();
if ( size < 10 )
size = 10;
return size;
}
void wxHtmlWinParser::SetFonts(const wxString& normal_face,
const wxString& fixed_face,
const int *sizes)
{
static int default_sizes[7] = { 0 };
if ( !sizes )
{
if ( !default_sizes[0] )
wxBuildFontSizes(default_sizes, wxGetDefaultHTMLFontSize());
sizes = default_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;
#if !wxUSE_UNICODE
SetInputEncoding(m_InputEnc);
#endif
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::SetStandardFonts(int size,
const wxString& normal_face,
const wxString& fixed_face)
{
if (size == -1)
size = wxGetDefaultHTMLFontSize();
int f_sizes[7];
wxBuildFontSizes(f_sizes, size);
wxString normal = normal_face;
if ( normal.empty() )
normal = wxNORMAL_FONT->GetFaceName();
SetFonts(normal, fixed_face, f_sizes);
}
void wxHtmlWinParser::InitParser(const wxString& source)
{
wxHtmlParser::InitParser(source);
wxASSERT_MSG(m_DC != NULL, wxT("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
// we're not using GetCharWidth/Height() because of
// differences under X and win
wxCoord w,h;
m_DC->GetTextExtent( wxT("H"), &w, &h);
m_CharWidth = w;
m_CharHeight = h;
m_UseLink = false;
m_Link = wxHtmlLinkInfo( wxEmptyString );
m_LinkColor.Set(0, 0, 0xFF);
m_ActualColor.Set(0, 0, 0);
m_Align = wxHTML_ALIGN_LEFT;
m_ScriptMode = wxHTML_SCRIPT_NORMAL;
m_ScriptBaseline = 0;
m_tmpLastWasSpace = false;
m_lastWordCell = NULL;
// open the toplevel container that contains everything else and that
// is never closed (this makes parser's life easier):
OpenContainer();
// then open the first container into which page's content will go:
OpenContainer();
#if !wxUSE_UNICODE
wxString charset = ExtractCharsetInformation(source);
if (!charset.empty())
{
wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(charset);
if (enc != wxFONTENCODING_SYSTEM)
SetInputEncoding(enc);
}
#endif
m_Container->InsertCell(new wxHtmlColourCell(m_ActualColor));
wxColour windowColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW) ;
m_Container->InsertCell
(
new wxHtmlColourCell
(
m_windowInterface
? m_windowInterface->GetHTMLBackgroundColour()
: windowColour,
wxHTML_CLR_BACKGROUND
)
);
m_Container->InsertCell(new wxHtmlFontCell(CreateCurrentFont()));
}
void wxHtmlWinParser::DoneParser()
{
m_Container = NULL;
#if !wxUSE_UNICODE
SetInputEncoding(wxFONTENCODING_ISO8859_1); // for next call
#endif
wxHtmlParser::DoneParser();
}
#if WXWIN_COMPATIBILITY_2_6
wxHtmlWindow *wxHtmlWinParser::GetWindow()
{
if (!m_windowInterface)
return NULL;
return wxDynamicCast(m_windowInterface->GetHTMLWindow(), wxHtmlWindow);
}
#endif
wxObject* wxHtmlWinParser::GetProduct()
{
wxHtmlContainerCell *top;
CloseContainer();
OpenContainer();
top = m_Container;
while (top->GetParent()) top = top->GetParent();
top->RemoveExtraSpacing(true, true);
return top;
}
wxFSFile *wxHtmlWinParser::OpenURL(wxHtmlURLType type,
const wxString& url) const
{
if ( !m_windowInterface )
return wxHtmlParser::OpenURL(type, url);
wxString myurl(url);
wxHtmlOpeningStatus status;
for (;;)
{
wxString myfullurl(myurl);
// consider url as absolute path first
wxURI current(myurl);
myfullurl = current.BuildUnescapedURI();
// if not absolute then ...
if( current.IsReference() )
{
wxString basepath = GetFS()->GetPath();
wxURI base(basepath);
// ... try to apply base path if valid ...
if( !base.IsReference() )
{
wxURI path(myfullurl);
path.Resolve( base );
myfullurl = path.BuildUnescapedURI();
}
else
{
// ... or force such addition if not included already
if( !current.GetPath().Contains(base.GetPath()) )
{
basepath += myurl;
wxURI connected( basepath );
myfullurl = connected.BuildUnescapedURI();
}
}
}
wxString redirect;
status = m_windowInterface->OnHTMLOpeningURL(type, myfullurl, &redirect);
if ( status != wxHTML_REDIRECT )
break;
myurl = redirect;
}
if ( status == wxHTML_BLOCK )
return NULL;
int flags = wxFS_READ;
if (type == wxHTML_URL_IMAGE)
flags |= wxFS_SEEKABLE;
return GetFS()->OpenFile(myurl, flags);
}
void wxHtmlWinParser::AddText(const wxChar* txt)
{
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(' ');
DoAddText(temp, templen, nbsp);
m_tmpLastWasSpace = true;
}
}
if (templen && (templen > 1 || temp[0] != wxT(' ')))
{
DoAddText(temp, templen, nbsp);
m_tmpLastWasSpace = false;
}
}
void wxHtmlWinParser::DoAddText(wxChar *temp, int& templen, wxChar nbsp)
{
temp[templen] = 0;
templen = 0;
#if !wxUSE_UNICODE
if (m_EncConv)
m_EncConv->Convert(temp);
#endif
size_t len = wxStrlen(temp);
for (size_t j = 0; j < len; j++)
{
if (temp[j] == nbsp)
temp[j] = wxT(' ');
}
wxHtmlCell *c = new wxHtmlWordCell(temp, *(GetDC()));
ApplyStateToCell(c);
m_Container->InsertCell(c);
((wxHtmlWordCell*)c)->SetPreviousWord(m_lastWordCell);
m_lastWordCell = (wxHtmlWordCell*)c;
}
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]);
#if !wxUSE_UNICODE
wxFontEncoding *encptr = &(m_FontsEncTable[fb][fi][fu][ff][fs]);
#endif
if (*fontptr != NULL && (*faceptr != face
#if !wxUSE_UNICODE
|| *encptr != m_OutputEnc
#endif
))
{
delete *fontptr;
*fontptr = NULL;
}
if (*fontptr == NULL)
{
*faceptr = face;
*fontptr = new wxFont(
(int) (m_FontsSizes[fs] * m_PixelScale),
ff ? wxMODERN : wxSWISS,
fi ? wxITALIC : wxNORMAL,
fb ? wxBOLD : wxNORMAL,
fu ? true : false, face
#if wxUSE_UNICODE
);
#else
, m_OutputEnc);
*encptr = m_OutputEnc;
#endif
}
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 !wxUSE_UNICODE
if (m_InputEnc != wxFONTENCODING_DEFAULT)
SetInputEncoding(m_InputEnc);
#endif
}
void wxHtmlWinParser::ApplyStateToCell(wxHtmlCell *cell)
{
// set the link:
if (m_UseLink)
cell->SetLink(GetLink());
// apply current script mode settings:
cell->SetScriptMode(GetScriptMode(), GetScriptBaseline());
}
#if !wxUSE_UNICODE
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;
else
{
#ifndef __WXMAC__
// okay, let's convert to ISO_8859-1, available always
m_OutputEnc = wxFONTENCODING_DEFAULT;
#else
m_OutputEnc = wxLocale::GetSystemEncoding() ;
#endif
}
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 failure :-(
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;
}
}
#endif
//-----------------------------------------------------------------------------
// 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
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