src/html/m_layout.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/html/m_layout.cpp
// Purpose:     wxHtml module for basic paragraphs/layout handling
// 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/image.h"
#endif

#include "wx/html/forcelnk.h"
#include "wx/html/m_templ.h"

#include "wx/html/htmlwin.h"

FORCE_LINK_ME(m_layout)

#ifdef __WXWINCE__
    #include "wx/msw/wince/missing.h"       // for bsearch()
#else
    #include <stdlib.h>                     // bsearch()
#endif

//-----------------------------------------------------------------------------
// wxHtmlPageBreakCell
//-----------------------------------------------------------------------------

// Since html isn't a page-layout language, it doesn't support page
// page breaks directly--that requires CSS2 support. But a page-break
// facility is handy, and has been requested more than once on the
// mailing lists. This wxHtml tag handler implements just enough of
// CSS2 to support a page break by recognizing only
//   <div style="page-break-before:always">
//
// wxHtml maintains page breaks in wxHtmlPrintout::m_PageBreaks. The
// tag handler below adds appropriate offsets to that array member.
// wxHtmlDCRenderer::Render() accesses that array and makes a new page
// begin after each page-break tag.

// The page-break handler does all its work in AdjustPagebreak(). For
// all tag handlers, that function adjusts the page-break position.
// For other tags, it determines whether the html element can fit on
// the remainder of the page; if it cannot fit, but must not be split,
// then the function moves the page break provided in the argument up,
// and returns 'true' to inform the caller that the argument was
// modified.
//
// Due to its special purpose, the page-break facility differs from
// other tags. It takes up no space, but it behaves as though there is
// never enough room to fit it on the remainder of the page--it always
// forces a page break. Therefore, unlike other elements that trigger
// a page break, it would never 'fit' on the following page either.
// Therefore it's necessary to compare each pagebreak candidate to the
// array wxHtmlPrintout::m_PageBreaks of pagebreaks already set, and
// set a new one only if it's not in that array.

class wxHtmlPageBreakCell : public wxHtmlCell
{
public:
    wxHtmlPageBreakCell() {}

    bool AdjustPagebreak(int* pagebreak,
                         wxArrayInt& known_pagebreaks) const;

    void Draw(wxDC& WXUNUSED(dc),
              int WXUNUSED(x), int WXUNUSED(y),
              int WXUNUSED(view_y1), int WXUNUSED(view_y2),
              wxHtmlRenderingInfo& WXUNUSED(info)) {}

private:
    DECLARE_NO_COPY_CLASS(wxHtmlPageBreakCell)
};

// Comparison routine for bsearch into an int* array of pagebreaks.
extern "C" int wxCMPFUNC_CONV wxInteger_compare(void const* i0, void const* i1)
{
    return *(int*)i0 - *(int*)i1;
}

bool wxHtmlPageBreakCell::AdjustPagebreak(int* pagebreak, wxArrayInt& known_pagebreaks) const
{
    // When we are counting pages, 'known_pagebreaks' is non-NULL.
    // That's the only time we change 'pagebreak'. Otherwise, pages
    // were already counted, 'known_pagebreaks' is NULL, and we don't
    // do anything except return false.
    //
    // We also simply return false if the 'pagebreak' argument is
    // less than (vertically above) or the same as the current
    // vertical position. Otherwise we'd be setting a pagebreak above
    // the current cell, which is incorrect, or duplicating a
    // pagebreak that has already been set.
    if( known_pagebreaks.GetCount() == 0 || *pagebreak <= m_PosY)
    {
        return false;
    }

    // m_PosY is only the vertical offset from the parent. The pagebreak
    // required here is the total page offset, so m_PosY must be added
    // to the parent's offset and height.
    int total_height = m_PosY;
    for ( wxHtmlCell *parent = GetParent(); parent; parent = parent->GetParent() )
    {
        total_height += parent->GetPosY();
    }


    // Search the array of pagebreaks to see whether we've already set
    // a pagebreak here. The standard bsearch() function is appropriate
    // because the array of pagebreaks through known_pagebreaks[number_of_pages]
    // is known to be sorted in strictly increasing order. '1 + number_of_pages'
    // is used as a bsearch() argument because the array contains a leading
    // zero plus one element for each page.
    int where = known_pagebreaks.Index( total_height);
    // Add a pagebreak only if there isn't one already set here.
    if( wxNOT_FOUND != where)
    {
        return false;
    }
    else
    {
        *pagebreak = m_PosY;
        return true;
    }
}


TAG_HANDLER_BEGIN(P, "P")
    TAG_HANDLER_CONSTR(P) { }

    TAG_HANDLER_PROC(tag)
    {
        if (m_WParser->GetContainer()->GetFirstChild() != NULL)
        {
            m_WParser->CloseContainer();
            m_WParser->OpenContainer();
        }
        m_WParser->GetContainer()->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
        m_WParser->GetContainer()->SetAlign(tag);
        return false;
    }

TAG_HANDLER_END(P)


TAG_HANDLER_BEGIN(BR, "BR")
    TAG_HANDLER_CONSTR(BR) { }

    TAG_HANDLER_PROC(tag)
    {
        int al = m_WParser->GetContainer()->GetAlignHor();
        wxHtmlContainerCell *c;

        m_WParser->CloseContainer();
        c = m_WParser->OpenContainer();
        c->SetAlignHor(al);
        c->SetAlign(tag);
        c->SetMinHeight(m_WParser->GetCharHeight());
        return false;
    }

TAG_HANDLER_END(BR)


TAG_HANDLER_BEGIN(CENTER, "CENTER")
    TAG_HANDLER_CONSTR(CENTER) { }

    TAG_HANDLER_PROC(tag)
    {
        int old = m_WParser->GetAlign();
        wxHtmlContainerCell *c = m_WParser->GetContainer();

        m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
        if (c->GetFirstChild() != NULL)
        {
            m_WParser->CloseContainer();
            m_WParser->OpenContainer();
        }
        else
            c->SetAlignHor(wxHTML_ALIGN_CENTER);

        if (tag.HasEnding())
        {
            ParseInner(tag);

            m_WParser->SetAlign(old);
            if (c->GetFirstChild() != NULL)
            {
                m_WParser->CloseContainer();
                m_WParser->OpenContainer();
            }
            else
                c->SetAlignHor(old);

            return true;
        }
        else return false;
    }

TAG_HANDLER_END(CENTER)


TAG_HANDLER_BEGIN(DIV, "DIV")
    TAG_HANDLER_CONSTR(DIV) { }

    TAG_HANDLER_PROC(tag)
    {
        if(tag.HasParam(wxT("STYLE")))
        {
            if(tag.GetParam(wxT("STYLE")).IsSameAs(wxT("PAGE-BREAK-BEFORE:ALWAYS"), false))
            {
                m_WParser->CloseContainer();
                m_WParser->OpenContainer()->InsertCell(new wxHtmlPageBreakCell);
                m_WParser->CloseContainer();
                m_WParser->OpenContainer();
                return false;
            }
            else
            {
                // Treat other STYLE parameters here when they're supported.
                return false;
            }
        }
        else if(tag.HasParam(wxT("ALIGN")))
        {
            int old = m_WParser->GetAlign();
            wxHtmlContainerCell *c = m_WParser->GetContainer();
            if (c->GetFirstChild() != NULL)
            {
                m_WParser->CloseContainer();
                m_WParser->OpenContainer();
                c = m_WParser->GetContainer();
                c->SetAlign(tag);
                m_WParser->SetAlign(c->GetAlignHor());
            }
            else
            {
                c->SetAlign(tag);
                m_WParser->SetAlign(c->GetAlignHor());
            }

            ParseInner(tag);

            m_WParser->SetAlign(old);
            if (c->GetFirstChild() != NULL)
            {
                m_WParser->CloseContainer();
                m_WParser->OpenContainer();
            }
            else
                c->SetAlignHor(old);

            return true;
        }
        else
        {
            // Same as BR
            int al = m_WParser->GetContainer()->GetAlignHor();
            wxHtmlContainerCell *c;

            m_WParser->CloseContainer();
            c = m_WParser->OpenContainer();
            c->SetAlignHor(al);
            c->SetAlign(tag);
            c->SetMinHeight(m_WParser->GetCharHeight());
            return false;
        }
    }

TAG_HANDLER_END(DIV)


TAG_HANDLER_BEGIN(TITLE, "TITLE")
    TAG_HANDLER_CONSTR(TITLE) { }

    TAG_HANDLER_PROC(tag)
    {
        wxHtmlWindowInterface *winIface = m_WParser->GetWindowInterface();
        if (winIface)
        {
            wxString title(tag.GetBeginIter(), tag.GetEndIter1());
#if !wxUSE_UNICODE && wxUSE_WCHAR_T
            const wxFontEncoding enc = m_WParser->GetInputEncoding();
            if ( enc != wxFONTENCODING_DEFAULT )
            {
                // need to convert to the current one
                title = wxString(title.wc_str(wxCSConv(enc)), wxConvLocal);
            }
#endif // !wxUSE_UNICODE

            title = m_WParser->GetEntitiesParser()->Parse(title);

            winIface->SetHTMLWindowTitle(title);
        }
        return true;
    }

TAG_HANDLER_END(TITLE)


TAG_HANDLER_BEGIN(BODY, "BODY")
    TAG_HANDLER_CONSTR(BODY) { }

    TAG_HANDLER_PROC(tag)
    {
        wxColour clr;

        if (tag.GetParamAsColour(wxT("TEXT"), &clr))
        {
            m_WParser->SetActualColor(clr);
            m_WParser->GetContainer()->InsertCell(new wxHtmlColourCell(clr));
        }

        if (tag.GetParamAsColour(wxT("LINK"), &clr))
            m_WParser->SetLinkColor(clr);

        wxHtmlWindowInterface *winIface = m_WParser->GetWindowInterface();
        // the rest of this function requires a window:
        if ( !winIface )
            return false;

        if (tag.HasParam(wxT("BACKGROUND")))
        {
            wxFSFile *fileBgImage = m_WParser->OpenURL
                                               (
                                                wxHTML_URL_IMAGE,
                                                tag.GetParam(wxT("BACKGROUND"))
                                               );
            if ( fileBgImage )
            {
                wxInputStream *is = fileBgImage->GetStream();
                if ( is )
                {
                    wxImage image(*is);
                    if ( image.Ok() )
                        winIface->SetHTMLBackgroundImage(image);
                }

                delete fileBgImage;
            }
        }

        if (tag.GetParamAsColour(wxT("BGCOLOR"), &clr))
        {
            m_WParser->GetContainer()->InsertCell(
                new wxHtmlColourCell(clr, wxHTML_CLR_BACKGROUND));
            winIface->SetHTMLBackgroundColour(clr);
        }

        return false;
    }

TAG_HANDLER_END(BODY)


TAG_HANDLER_BEGIN(BLOCKQUOTE, "BLOCKQUOTE")
    TAG_HANDLER_CONSTR(BLOCKQUOTE) { }

    TAG_HANDLER_PROC(tag)
    {
        wxHtmlContainerCell *c;

        m_WParser->CloseContainer();
        c = m_WParser->OpenContainer();

        if (c->GetAlignHor() == wxHTML_ALIGN_RIGHT)
            c->SetIndent(5 * m_WParser->GetCharWidth(), wxHTML_INDENT_RIGHT);
        else
            c->SetIndent(5 * m_WParser->GetCharWidth(), wxHTML_INDENT_LEFT);

        c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
        m_WParser->OpenContainer();
        ParseInner(tag);
        c = m_WParser->CloseContainer();
        c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_BOTTOM);
        m_WParser->CloseContainer();
        m_WParser->OpenContainer();
        return true;
    }

TAG_HANDLER_END(BLOCKQUOTE)


TAG_HANDLER_BEGIN(SUBSUP, "SUB,SUP")

    TAG_HANDLER_PROC(tag)
    {
        bool issub = (tag.GetName() == wxT("SUB"));
        wxHtmlScriptMode oldmode = m_WParser->GetScriptMode();
        int oldbase = m_WParser->GetScriptBaseline();
        int oldsize = m_WParser->GetFontSize();

        wxHtmlContainerCell *cont = m_WParser->GetContainer();
        wxHtmlCell *c = cont->GetLastChild();

        m_WParser->SetScriptMode(issub ? wxHTML_SCRIPT_SUB : wxHTML_SCRIPT_SUP);
        m_WParser->SetScriptBaseline(
                oldbase + c ? c->GetScriptBaseline() : 0);

        // select smaller font
        m_WParser->SetFontSize(m_WParser->GetFontSize()-2);
        cont->InsertCell(new wxHtmlFontCell(m_WParser->CreateCurrentFont()));

        ParseInner(tag);

        // restore font size
        m_WParser->SetFontSize(oldsize);
        m_WParser->GetContainer()->InsertCell(
            new wxHtmlFontCell(m_WParser->CreateCurrentFont()));

        // restore base and alignment
        m_WParser->SetScriptBaseline(oldbase);
        m_WParser->SetScriptMode(oldmode);

        return true;
    }

TAG_HANDLER_END(SUBSUP)


// Tag handler for tags that we have to ignore, otherwise non-text data
// would show up as text:
TAG_HANDLER_BEGIN(DoNothing, "SCRIPT")
    TAG_HANDLER_CONSTR(DoNothing) { }

    TAG_HANDLER_PROC(WXUNUSED(tag))
    {
        return true;
    }
TAG_HANDLER_END(DoNothing)


TAGS_MODULE_BEGIN(Layout)

    TAGS_MODULE_ADD(P)
    TAGS_MODULE_ADD(BR)
    TAGS_MODULE_ADD(CENTER)
    TAGS_MODULE_ADD(DIV)
    TAGS_MODULE_ADD(TITLE)
    TAGS_MODULE_ADD(BODY)
    TAGS_MODULE_ADD(BLOCKQUOTE)
    TAGS_MODULE_ADD(SUBSUP)
    TAGS_MODULE_ADD(DoNothing)

TAGS_MODULE_END(Layout)

#endif
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: src/html/m_layout.cpp
	3	// Purpose: wxHtml module for basic paragraphs/layout handling
	4	// Author: Vaclav Slavik
	5	// RCS-ID: $Id$
	6	// Copyright: (c) 1999 Vaclav Slavik
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#include "wx/wxprec.h"
	11
	12	#ifdef __BORLANDC__
	13	#pragma hdrstop
	14	#endif
	15
	16	#if wxUSE_HTML && wxUSE_STREAMS
	17
	18	#ifndef WX_PRECOMP
	19	#include "wx/image.h"
	20	#endif
	21
	22	#include "wx/html/forcelnk.h"
	23	#include "wx/html/m_templ.h"
	24
	25	#include "wx/html/htmlwin.h"
	26
	27	FORCE_LINK_ME(m_layout)
	28
	29	#ifdef __WXWINCE__
	30	#include "wx/msw/wince/missing.h" // for bsearch()
	31	#else
	32	#include <stdlib.h> // bsearch()
	33	#endif
	34
	35	//-----------------------------------------------------------------------------
	36	// wxHtmlPageBreakCell
	37	//-----------------------------------------------------------------------------
	38
	39	// Since html isn't a page-layout language, it doesn't support page
	40	// page breaks directly--that requires CSS2 support. But a page-break
	41	// facility is handy, and has been requested more than once on the
	42	// mailing lists. This wxHtml tag handler implements just enough of
	43	// CSS2 to support a page break by recognizing only
	44	// <div style="page-break-before:always">
	45	//
	46	// wxHtml maintains page breaks in wxHtmlPrintout::m_PageBreaks. The
	47	// tag handler below adds appropriate offsets to that array member.
	48	// wxHtmlDCRenderer::Render() accesses that array and makes a new page
	49	// begin after each page-break tag.
	50
	51	// The page-break handler does all its work in AdjustPagebreak(). For
	52	// all tag handlers, that function adjusts the page-break position.
	53	// For other tags, it determines whether the html element can fit on
	54	// the remainder of the page; if it cannot fit, but must not be split,
	55	// then the function moves the page break provided in the argument up,
	56	// and returns 'true' to inform the caller that the argument was
	57	// modified.
	58	//
	59	// Due to its special purpose, the page-break facility differs from
	60	// other tags. It takes up no space, but it behaves as though there is
	61	// never enough room to fit it on the remainder of the page--it always
	62	// forces a page break. Therefore, unlike other elements that trigger
	63	// a page break, it would never 'fit' on the following page either.
	64	// Therefore it's necessary to compare each pagebreak candidate to the
	65	// array wxHtmlPrintout::m_PageBreaks of pagebreaks already set, and
	66	// set a new one only if it's not in that array.
	67
	68	class wxHtmlPageBreakCell : public wxHtmlCell
	69	{
	70	public:
	71	wxHtmlPageBreakCell() {}
	72
	73	bool AdjustPagebreak(int* pagebreak,
	74	wxArrayInt& known_pagebreaks) const;
	75
	76	void Draw(wxDC& WXUNUSED(dc),
	77	int WXUNUSED(x), int WXUNUSED(y),
	78	int WXUNUSED(view_y1), int WXUNUSED(view_y2),
	79	wxHtmlRenderingInfo& WXUNUSED(info)) {}
	80
	81	private:
	82	DECLARE_NO_COPY_CLASS(wxHtmlPageBreakCell)
	83	};
	84
	85	// Comparison routine for bsearch into an int* array of pagebreaks.
	86	extern "C" int wxCMPFUNC_CONV wxInteger_compare(void const* i0, void const* i1)
	87	{
	88	return (int)i0 - (int)i1;
	89	}
	90
	91	bool wxHtmlPageBreakCell::AdjustPagebreak(int* pagebreak, wxArrayInt& known_pagebreaks) const
	92	{
	93	// When we are counting pages, 'known_pagebreaks' is non-NULL.
	94	// That's the only time we change 'pagebreak'. Otherwise, pages
	95	// were already counted, 'known_pagebreaks' is NULL, and we don't
	96	// do anything except return false.
	97	//
	98	// We also simply return false if the 'pagebreak' argument is
	99	// less than (vertically above) or the same as the current
	100	// vertical position. Otherwise we'd be setting a pagebreak above
	101	// the current cell, which is incorrect, or duplicating a
	102	// pagebreak that has already been set.
	103	if( known_pagebreaks.GetCount() == 0 \|\| *pagebreak <= m_PosY)
	104	{
	105	return false;
	106	}
	107
	108	// m_PosY is only the vertical offset from the parent. The pagebreak
	109	// required here is the total page offset, so m_PosY must be added
	110	// to the parent's offset and height.
	111	int total_height = m_PosY;
	112	for ( wxHtmlCell *parent = GetParent(); parent; parent = parent->GetParent() )
	113	{
	114	total_height += parent->GetPosY();
	115	}
	116
	117
	118	// Search the array of pagebreaks to see whether we've already set
	119	// a pagebreak here. The standard bsearch() function is appropriate
	120	// because the array of pagebreaks through known_pagebreaks[number_of_pages]
	121	// is known to be sorted in strictly increasing order. '1 + number_of_pages'
	122	// is used as a bsearch() argument because the array contains a leading
	123	// zero plus one element for each page.
	124	int where = known_pagebreaks.Index( total_height);
	125	// Add a pagebreak only if there isn't one already set here.
	126	if( wxNOT_FOUND != where)
	127	{
	128	return false;
	129	}
	130	else
	131	{
	132	*pagebreak = m_PosY;
	133	return true;
	134	}
	135	}
	136
	137
	138
	139	TAG_HANDLER_BEGIN(P, "P")
	140	TAG_HANDLER_CONSTR(P) { }
	141
	142	TAG_HANDLER_PROC(tag)
	143	{
	144	if (m_WParser->GetContainer()->GetFirstChild() != NULL)
	145	{
	146	m_WParser->CloseContainer();
	147	m_WParser->OpenContainer();
	148	}
	149	m_WParser->GetContainer()->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
	150	m_WParser->GetContainer()->SetAlign(tag);
	151	return false;
	152	}
	153
	154	TAG_HANDLER_END(P)
	155
	156
	157
	158	TAG_HANDLER_BEGIN(BR, "BR")
	159	TAG_HANDLER_CONSTR(BR) { }
	160
	161	TAG_HANDLER_PROC(tag)
	162	{
	163	int al = m_WParser->GetContainer()->GetAlignHor();
	164	wxHtmlContainerCell *c;
	165
	166	m_WParser->CloseContainer();
	167	c = m_WParser->OpenContainer();
	168	c->SetAlignHor(al);
	169	c->SetAlign(tag);
	170	c->SetMinHeight(m_WParser->GetCharHeight());
	171	return false;
	172	}
	173
	174	TAG_HANDLER_END(BR)
	175
	176
	177
	178	TAG_HANDLER_BEGIN(CENTER, "CENTER")
	179	TAG_HANDLER_CONSTR(CENTER) { }
	180
	181	TAG_HANDLER_PROC(tag)
	182	{
	183	int old = m_WParser->GetAlign();
	184	wxHtmlContainerCell *c = m_WParser->GetContainer();
	185
	186	m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
	187	if (c->GetFirstChild() != NULL)
	188	{
	189	m_WParser->CloseContainer();
	190	m_WParser->OpenContainer();
	191	}
	192	else
	193	c->SetAlignHor(wxHTML_ALIGN_CENTER);
	194
	195	if (tag.HasEnding())
	196	{
	197	ParseInner(tag);
	198
	199	m_WParser->SetAlign(old);
	200	if (c->GetFirstChild() != NULL)
	201	{
	202	m_WParser->CloseContainer();
	203	m_WParser->OpenContainer();
	204	}
	205	else
	206	c->SetAlignHor(old);
	207
	208	return true;
	209	}
	210	else return false;
	211	}
	212
	213	TAG_HANDLER_END(CENTER)
	214
	215
	216
	217	TAG_HANDLER_BEGIN(DIV, "DIV")
	218	TAG_HANDLER_CONSTR(DIV) { }
	219
	220	TAG_HANDLER_PROC(tag)
	221	{
	222	if(tag.HasParam(wxT("STYLE")))
	223	{
	224	if(tag.GetParam(wxT("STYLE")).IsSameAs(wxT("PAGE-BREAK-BEFORE:ALWAYS"), false))
	225	{
	226	m_WParser->CloseContainer();
	227	m_WParser->OpenContainer()->InsertCell(new wxHtmlPageBreakCell);
	228	m_WParser->CloseContainer();
	229	m_WParser->OpenContainer();
	230	return false;
	231	}
	232	else
	233	{
	234	// Treat other STYLE parameters here when they're supported.
	235	return false;
	236	}
	237	}
	238	else if(tag.HasParam(wxT("ALIGN")))
	239	{
	240	int old = m_WParser->GetAlign();
	241	wxHtmlContainerCell *c = m_WParser->GetContainer();
	242	if (c->GetFirstChild() != NULL)
	243	{
	244	m_WParser->CloseContainer();
	245	m_WParser->OpenContainer();
	246	c = m_WParser->GetContainer();
	247	c->SetAlign(tag);
	248	m_WParser->SetAlign(c->GetAlignHor());
	249	}
	250	else
	251	{
	252	c->SetAlign(tag);
	253	m_WParser->SetAlign(c->GetAlignHor());
	254	}
	255
	256	ParseInner(tag);
	257
	258	m_WParser->SetAlign(old);
	259	if (c->GetFirstChild() != NULL)
	260	{
	261	m_WParser->CloseContainer();
	262	m_WParser->OpenContainer();
	263	}
	264	else
	265	c->SetAlignHor(old);
	266
	267	return true;
	268	}
	269	else
	270	{
	271	// Same as BR
	272	int al = m_WParser->GetContainer()->GetAlignHor();
	273	wxHtmlContainerCell *c;
	274
	275	m_WParser->CloseContainer();
	276	c = m_WParser->OpenContainer();
	277	c->SetAlignHor(al);
	278	c->SetAlign(tag);
	279	c->SetMinHeight(m_WParser->GetCharHeight());
	280	return false;
	281	}
	282	}
	283
	284	TAG_HANDLER_END(DIV)
	285
	286
	287
	288
	289	TAG_HANDLER_BEGIN(TITLE, "TITLE")
	290	TAG_HANDLER_CONSTR(TITLE) { }
	291
	292	TAG_HANDLER_PROC(tag)
	293	{
	294	wxHtmlWindowInterface *winIface = m_WParser->GetWindowInterface();
	295	if (winIface)
	296	{
	297	wxString title(tag.GetBeginIter(), tag.GetEndIter1());
	298	#if !wxUSE_UNICODE && wxUSE_WCHAR_T
	299	const wxFontEncoding enc = m_WParser->GetInputEncoding();
	300	if ( enc != wxFONTENCODING_DEFAULT )
	301	{
	302	// need to convert to the current one
	303	title = wxString(title.wc_str(wxCSConv(enc)), wxConvLocal);
	304	}
	305	#endif // !wxUSE_UNICODE
	306
	307	title = m_WParser->GetEntitiesParser()->Parse(title);
	308
	309	winIface->SetHTMLWindowTitle(title);
	310	}
	311	return true;
	312	}
	313
	314	TAG_HANDLER_END(TITLE)
	315
	316
	317
	318
	319	TAG_HANDLER_BEGIN(BODY, "BODY")
	320	TAG_HANDLER_CONSTR(BODY) { }
	321
	322	TAG_HANDLER_PROC(tag)
	323	{
	324	wxColour clr;
	325
	326	if (tag.GetParamAsColour(wxT("TEXT"), &clr))
	327	{
	328	m_WParser->SetActualColor(clr);
	329	m_WParser->GetContainer()->InsertCell(new wxHtmlColourCell(clr));
	330	}
	331
	332	if (tag.GetParamAsColour(wxT("LINK"), &clr))
	333	m_WParser->SetLinkColor(clr);
	334
	335	wxHtmlWindowInterface *winIface = m_WParser->GetWindowInterface();
	336	// the rest of this function requires a window:
	337	if ( !winIface )
	338	return false;
	339
	340	if (tag.HasParam(wxT("BACKGROUND")))
	341	{
	342	wxFSFile *fileBgImage = m_WParser->OpenURL
	343	(
	344	wxHTML_URL_IMAGE,
	345	tag.GetParam(wxT("BACKGROUND"))
	346	);
	347	if ( fileBgImage )
	348	{
	349	wxInputStream *is = fileBgImage->GetStream();
	350	if ( is )
	351	{
	352	wxImage image(*is);
	353	if ( image.Ok() )
	354	winIface->SetHTMLBackgroundImage(image);
	355	}
	356
	357	delete fileBgImage;
	358	}
	359	}
	360
	361	if (tag.GetParamAsColour(wxT("BGCOLOR"), &clr))
	362	{
	363	m_WParser->GetContainer()->InsertCell(
	364	new wxHtmlColourCell(clr, wxHTML_CLR_BACKGROUND));
	365	winIface->SetHTMLBackgroundColour(clr);
	366	}
	367
	368	return false;
	369	}
	370
	371	TAG_HANDLER_END(BODY)
	372
	373
	374
	375	TAG_HANDLER_BEGIN(BLOCKQUOTE, "BLOCKQUOTE")
	376	TAG_HANDLER_CONSTR(BLOCKQUOTE) { }
	377
	378	TAG_HANDLER_PROC(tag)
	379	{
	380	wxHtmlContainerCell *c;
	381
	382	m_WParser->CloseContainer();
	383	c = m_WParser->OpenContainer();
	384
	385	if (c->GetAlignHor() == wxHTML_ALIGN_RIGHT)
	386	c->SetIndent(5 * m_WParser->GetCharWidth(), wxHTML_INDENT_RIGHT);
	387	else
	388	c->SetIndent(5 * m_WParser->GetCharWidth(), wxHTML_INDENT_LEFT);
	389
	390	c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
	391	m_WParser->OpenContainer();
	392	ParseInner(tag);
	393	c = m_WParser->CloseContainer();
	394	c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_BOTTOM);
	395	m_WParser->CloseContainer();
	396	m_WParser->OpenContainer();
	397	return true;
	398	}
	399
	400	TAG_HANDLER_END(BLOCKQUOTE)
	401
	402
	403
	404	TAG_HANDLER_BEGIN(SUBSUP, "SUB,SUP")
	405
	406	TAG_HANDLER_PROC(tag)
	407	{
	408	bool issub = (tag.GetName() == wxT("SUB"));
	409	wxHtmlScriptMode oldmode = m_WParser->GetScriptMode();
	410	int oldbase = m_WParser->GetScriptBaseline();
	411	int oldsize = m_WParser->GetFontSize();
	412
	413	wxHtmlContainerCell *cont = m_WParser->GetContainer();
	414	wxHtmlCell *c = cont->GetLastChild();
	415
	416	m_WParser->SetScriptMode(issub ? wxHTML_SCRIPT_SUB : wxHTML_SCRIPT_SUP);
	417	m_WParser->SetScriptBaseline(
	418	oldbase + c ? c->GetScriptBaseline() : 0);
	419
	420	// select smaller font
	421	m_WParser->SetFontSize(m_WParser->GetFontSize()-2);
	422	cont->InsertCell(new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
	423
	424	ParseInner(tag);
	425
	426	// restore font size
	427	m_WParser->SetFontSize(oldsize);
	428	m_WParser->GetContainer()->InsertCell(
	429	new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
	430
	431	// restore base and alignment
	432	m_WParser->SetScriptBaseline(oldbase);
	433	m_WParser->SetScriptMode(oldmode);
	434
	435	return true;
	436	}
	437
	438	TAG_HANDLER_END(SUBSUP)
	439
	440
	441	// Tag handler for tags that we have to ignore, otherwise non-text data
	442	// would show up as text:
	443	TAG_HANDLER_BEGIN(DoNothing, "SCRIPT")
	444	TAG_HANDLER_CONSTR(DoNothing) { }
	445
	446	TAG_HANDLER_PROC(WXUNUSED(tag))
	447	{
	448	return true;
	449	}
	450	TAG_HANDLER_END(DoNothing)
	451
	452
	453
	454
	455
	456	TAGS_MODULE_BEGIN(Layout)
	457
	458	TAGS_MODULE_ADD(P)
	459	TAGS_MODULE_ADD(BR)
	460	TAGS_MODULE_ADD(CENTER)
	461	TAGS_MODULE_ADD(DIV)
	462	TAGS_MODULE_ADD(TITLE)
	463	TAGS_MODULE_ADD(BODY)
	464	TAGS_MODULE_ADD(BLOCKQUOTE)
	465	TAGS_MODULE_ADD(SUBSUP)
	466	TAGS_MODULE_ADD(DoNothing)
	467
	468	TAGS_MODULE_END(Layout)
	469
	470	#endif