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 + GetParent()->GetPosY() + GetParent()->GetHeight();

    // 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 = m_WParser->GetSource()->Mid(
                                    tag.GetBeginPos(),
                                    tag.GetEndPos1()-tag.GetBeginPos());
#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 + GetParent()->GetPosY() + GetParent()->GetHeight();
	112
	113	// Search the array of pagebreaks to see whether we've already set
	114	// a pagebreak here. The standard bsearch() function is appropriate
	115	// because the array of pagebreaks through known_pagebreaks[number_of_pages]
	116	// is known to be sorted in strictly increasing order. '1 + number_of_pages'
	117	// is used as a bsearch() argument because the array contains a leading
	118	// zero plus one element for each page.
	119	int where = known_pagebreaks.Index( total_height);
	120	// Add a pagebreak only if there isn't one already set here.
	121	if( wxNOT_FOUND != where)
	122	{
	123	return false;
	124	}
	125	else
	126	{
	127	*pagebreak = m_PosY;
	128	return true;
	129	}
	130	}
	131
	132
	133
	134	TAG_HANDLER_BEGIN(P, "P")
	135	TAG_HANDLER_CONSTR(P) { }
	136
	137	TAG_HANDLER_PROC(tag)
	138	{
	139	if (m_WParser->GetContainer()->GetFirstChild() != NULL)
	140	{
	141	m_WParser->CloseContainer();
	142	m_WParser->OpenContainer();
	143	}
	144	m_WParser->GetContainer()->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
	145	m_WParser->GetContainer()->SetAlign(tag);
	146	return false;
	147	}
	148
	149	TAG_HANDLER_END(P)
	150
	151
	152
	153	TAG_HANDLER_BEGIN(BR, "BR")
	154	TAG_HANDLER_CONSTR(BR) { }
	155
	156	TAG_HANDLER_PROC(tag)
	157	{
	158	int al = m_WParser->GetContainer()->GetAlignHor();
	159	wxHtmlContainerCell *c;
	160
	161	m_WParser->CloseContainer();
	162	c = m_WParser->OpenContainer();
	163	c->SetAlignHor(al);
	164	c->SetAlign(tag);
	165	c->SetMinHeight(m_WParser->GetCharHeight());
	166	return false;
	167	}
	168
	169	TAG_HANDLER_END(BR)
	170
	171
	172
	173	TAG_HANDLER_BEGIN(CENTER, "CENTER")
	174	TAG_HANDLER_CONSTR(CENTER) { }
	175
	176	TAG_HANDLER_PROC(tag)
	177	{
	178	int old = m_WParser->GetAlign();
	179	wxHtmlContainerCell *c = m_WParser->GetContainer();
	180
	181	m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
	182	if (c->GetFirstChild() != NULL)
	183	{
	184	m_WParser->CloseContainer();
	185	m_WParser->OpenContainer();
	186	}
	187	else
	188	c->SetAlignHor(wxHTML_ALIGN_CENTER);
	189
	190	if (tag.HasEnding())
	191	{
	192	ParseInner(tag);
	193
	194	m_WParser->SetAlign(old);
	195	if (c->GetFirstChild() != NULL)
	196	{
	197	m_WParser->CloseContainer();
	198	m_WParser->OpenContainer();
	199	}
	200	else
	201	c->SetAlignHor(old);
	202
	203	return true;
	204	}
	205	else return false;
	206	}
	207
	208	TAG_HANDLER_END(CENTER)
	209
	210
	211
	212	TAG_HANDLER_BEGIN(DIV, "DIV")
	213	TAG_HANDLER_CONSTR(DIV) { }
	214
	215	TAG_HANDLER_PROC(tag)
	216	{
	217	if(tag.HasParam(wxT("STYLE")))
	218	{
	219	if(tag.GetParam(wxT("STYLE")).IsSameAs(wxT("PAGE-BREAK-BEFORE:ALWAYS"), false))
	220	{
	221	m_WParser->CloseContainer();
	222	m_WParser->OpenContainer()->InsertCell(new wxHtmlPageBreakCell);
	223	m_WParser->CloseContainer();
	224	m_WParser->OpenContainer();
	225	return false;
	226	}
	227	else
	228	{
	229	// Treat other STYLE parameters here when they're supported.
	230	return false;
	231	}
	232	}
	233	else if(tag.HasParam(wxT("ALIGN")))
	234	{
	235	int old = m_WParser->GetAlign();
	236	wxHtmlContainerCell *c = m_WParser->GetContainer();
	237	if (c->GetFirstChild() != NULL)
	238	{
	239	m_WParser->CloseContainer();
	240	m_WParser->OpenContainer();
	241	c = m_WParser->GetContainer();
	242	c->SetAlign(tag);
	243	m_WParser->SetAlign(c->GetAlignHor());
	244	}
	245	else
	246	{
	247	c->SetAlign(tag);
	248	m_WParser->SetAlign(c->GetAlignHor());
	249	}
	250
	251	ParseInner(tag);
	252
	253	m_WParser->SetAlign(old);
	254	if (c->GetFirstChild() != NULL)
	255	{
	256	m_WParser->CloseContainer();
	257	m_WParser->OpenContainer();
	258	}
	259	else
	260	c->SetAlignHor(old);
	261
	262	return true;
	263	}
	264	else
	265	{
	266	// Same as BR
	267	int al = m_WParser->GetContainer()->GetAlignHor();
	268	wxHtmlContainerCell *c;
	269
	270	m_WParser->CloseContainer();
	271	c = m_WParser->OpenContainer();
	272	c->SetAlignHor(al);
	273	c->SetAlign(tag);
	274	c->SetMinHeight(m_WParser->GetCharHeight());
	275	return false;
	276	}
	277	}
	278
	279	TAG_HANDLER_END(DIV)
	280
	281
	282
	283
	284	TAG_HANDLER_BEGIN(TITLE, "TITLE")
	285	TAG_HANDLER_CONSTR(TITLE) { }
	286
	287	TAG_HANDLER_PROC(tag)
	288	{
	289	wxHtmlWindowInterface *winIface = m_WParser->GetWindowInterface();
	290	if (winIface)
	291	{
	292	wxString title = m_WParser->GetSource()->Mid(
	293	tag.GetBeginPos(),
	294	tag.GetEndPos1()-tag.GetBeginPos());
	295	#if !wxUSE_UNICODE && wxUSE_WCHAR_T
	296	const wxFontEncoding enc = m_WParser->GetInputEncoding();
	297	if ( enc != wxFONTENCODING_DEFAULT )
	298	{
	299	// need to convert to the current one
	300	title = wxString(title.wc_str(wxCSConv(enc)), wxConvLocal);
	301	}
	302	#endif // !wxUSE_UNICODE
	303
	304	title = m_WParser->GetEntitiesParser()->Parse(title);
	305
	306	winIface->SetHTMLWindowTitle(title);
	307	}
	308	return true;
	309	}
	310
	311	TAG_HANDLER_END(TITLE)
	312
	313
	314
	315
	316	TAG_HANDLER_BEGIN(BODY, "BODY")
	317	TAG_HANDLER_CONSTR(BODY) { }
	318
	319	TAG_HANDLER_PROC(tag)
	320	{
	321	wxColour clr;
	322
	323	if (tag.GetParamAsColour(wxT("TEXT"), &clr))
	324	{
	325	m_WParser->SetActualColor(clr);
	326	m_WParser->GetContainer()->InsertCell(new wxHtmlColourCell(clr));
	327	}
	328
	329	if (tag.GetParamAsColour(wxT("LINK"), &clr))
	330	m_WParser->SetLinkColor(clr);
	331
	332	wxHtmlWindowInterface *winIface = m_WParser->GetWindowInterface();
	333	// the rest of this function requires a window:
	334	if ( !winIface )
	335	return false;
	336
	337	if (tag.HasParam(wxT("BACKGROUND")))
	338	{
	339	wxFSFile *fileBgImage = m_WParser->OpenURL
	340	(
	341	wxHTML_URL_IMAGE,
	342	tag.GetParam(wxT("BACKGROUND"))
	343	);
	344	if ( fileBgImage )
	345	{
	346	wxInputStream *is = fileBgImage->GetStream();
	347	if ( is )
	348	{
	349	wxImage image(*is);
	350	if ( image.Ok() )
	351	winIface->SetHTMLBackgroundImage(image);
	352	}
	353
	354	delete fileBgImage;
	355	}
	356	}
	357
	358	if (tag.GetParamAsColour(wxT("BGCOLOR"), &clr))
	359	{
	360	m_WParser->GetContainer()->InsertCell(
	361	new wxHtmlColourCell(clr, wxHTML_CLR_BACKGROUND));
	362	winIface->SetHTMLBackgroundColour(clr);
	363	}
	364
	365	return false;
	366	}
	367
	368	TAG_HANDLER_END(BODY)
	369
	370
	371
	372	TAG_HANDLER_BEGIN(BLOCKQUOTE, "BLOCKQUOTE")
	373	TAG_HANDLER_CONSTR(BLOCKQUOTE) { }
	374
	375	TAG_HANDLER_PROC(tag)
	376	{
	377	wxHtmlContainerCell *c;
	378
	379	m_WParser->CloseContainer();
	380	c = m_WParser->OpenContainer();
	381
	382	if (c->GetAlignHor() == wxHTML_ALIGN_RIGHT)
	383	c->SetIndent(5 * m_WParser->GetCharWidth(), wxHTML_INDENT_RIGHT);
	384	else
	385	c->SetIndent(5 * m_WParser->GetCharWidth(), wxHTML_INDENT_LEFT);
	386
	387	c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
	388	m_WParser->OpenContainer();
	389	ParseInner(tag);
	390	c = m_WParser->CloseContainer();
	391	c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_BOTTOM);
	392	m_WParser->CloseContainer();
	393	m_WParser->OpenContainer();
	394	return true;
	395	}
	396
	397	TAG_HANDLER_END(BLOCKQUOTE)
	398
	399
	400
	401	TAG_HANDLER_BEGIN(SUBSUP, "SUB,SUP")
	402
	403	TAG_HANDLER_PROC(tag)
	404	{
	405	bool issub = (tag.GetName() == wxT("SUB"));
	406	wxHtmlScriptMode oldmode = m_WParser->GetScriptMode();
	407	int oldbase = m_WParser->GetScriptBaseline();
	408	int oldsize = m_WParser->GetFontSize();
	409
	410	wxHtmlContainerCell *cont = m_WParser->GetContainer();
	411	wxHtmlCell *c = cont->GetLastChild();
	412
	413	m_WParser->SetScriptMode(issub ? wxHTML_SCRIPT_SUB : wxHTML_SCRIPT_SUP);
	414	m_WParser->SetScriptBaseline(
	415	oldbase + c ? c->GetScriptBaseline() : 0);
	416
	417	// select smaller font
	418	m_WParser->SetFontSize(m_WParser->GetFontSize()-2);
	419	cont->InsertCell(new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
	420
	421	ParseInner(tag);
	422
	423	// restore font size
	424	m_WParser->SetFontSize(oldsize);
	425	m_WParser->GetContainer()->InsertCell(
	426	new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
	427
	428	// restore base and alignment
	429	m_WParser->SetScriptBaseline(oldbase);
	430	m_WParser->SetScriptMode(oldmode);
	431
	432	return true;
	433	}
	434
	435	TAG_HANDLER_END(SUBSUP)
	436
	437
	438	// Tag handler for tags that we have to ignore, otherwise non-text data
	439	// would show up as text:
	440	TAG_HANDLER_BEGIN(DoNothing, "SCRIPT")
	441	TAG_HANDLER_CONSTR(DoNothing) { }
	442
	443	TAG_HANDLER_PROC(WXUNUSED(tag))
	444	{
	445	return true;
	446	}
	447	TAG_HANDLER_END(DoNothing)
	448
	449
	450
	451
	452
	453	TAGS_MODULE_BEGIN(Layout)
	454
	455	TAGS_MODULE_ADD(P)
	456	TAGS_MODULE_ADD(BR)
	457	TAGS_MODULE_ADD(CENTER)
	458	TAGS_MODULE_ADD(DIV)
	459	TAGS_MODULE_ADD(TITLE)
	460	TAGS_MODULE_ADD(BODY)
	461	TAGS_MODULE_ADD(BLOCKQUOTE)
	462	TAGS_MODULE_ADD(SUBSUP)
	463	TAGS_MODULE_ADD(DoNothing)
	464
	465	TAGS_MODULE_END(Layout)
	466
	467	#endif