winpars.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name:        winpars.cpp
// Purpose:     wxHtmlParser class (generic parser)
// Author:      Vaclav Slavik
// RCS-ID:      $Id: winpars.cpp,v 1.58 2005/02/08 13:00:05 ABX Exp $
// Copyright:   (c) 1999 Vaclav Slavik
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////


#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "winpars.h"
#endif

#include "wx/wxprec.h"

#include "wx/defs.h"
#if wxUSE_HTML && wxUSE_STREAMS

#ifdef __BORLANDC__
#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"
#include "wx/settings.h"
#include "wx/uri.h"


//-----------------------------------------------------------------------------
// wxHtmlWinParser
//-----------------------------------------------------------------------------

IMPLEMENT_ABSTRACT_CLASS(wxHtmlWinParser, wxHtmlParser)

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;
#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);
}

void wxHtmlWinParser::SetFonts(wxString normal_face, wxString fixed_face,
                               const int *sizes)
{
    static int default_sizes[7] =
        {
            wxHTML_FONT_SIZE_1,
            wxHTML_FONT_SIZE_2,
            wxHTML_FONT_SIZE_3,
            wxHTML_FONT_SIZE_4,
            wxHTML_FONT_SIZE_5,
            wxHTML_FONT_SIZE_6,
            wxHTML_FONT_SIZE_7
        };

    if (sizes == NULL) 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)
{
    wxFont defaultFont = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);

    int f_sizes[7];
    if (size == -1)
        size = defaultFont.GetPointSize();

    f_sizes[0] = int(size * 0.6);
    f_sizes[1] = int(size * 0.8);
    f_sizes[2] = size;
    f_sizes[3] = int(size * 1.2);
    f_sizes[4] = int(size * 1.4);
    f_sizes[5] = int(size * 1.6);
    f_sizes[6] = int(size * 1.8);

    wxString normal = normal_face.empty() ?
                      defaultFont.GetFaceName() : normal_face;

    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
    m_DC->GetTextExtent( wxT("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( wxEmptyString );
    m_LinkColor.Set(0, 0, 0xFF);
    m_ActualColor.Set(0, 0, 0);
    m_Align = wxHTML_ALIGN_LEFT;
    m_tmpLastWasSpace = false;
    m_lastWordCell = NULL;

    OpenContainer();
    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(GetWindow() ?
                                     GetWindow()->GetBackgroundColour() :
                                     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();
}

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_Window )
    {
        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_Window->OnOpeningURL(type, myfullurl, &redirect);
            if ( status != wxHTML_REDIRECT )
                break;

            myurl = redirect;
        }

        if ( status == wxHTML_BLOCK )