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 WXPRECOMP
#endif

#include "wx/image.h"

#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,
                         int* known_pagebreaks = NULL,
                         int number_of_pages = 0) 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, int* known_pagebreaks, int number_of_pages) 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(NULL == known_pagebreaks || *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 = (int*) bsearch(&total_height, known_pagebreaks,
                                1 + number_of_pages, sizeof(int),
                                wxInteger_compare);
    // Add a pagebreak only if there isn't one already set here.
    if(NULL != 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
            wxCSConv conv(m_WParser->GetInputEncoding());
            title = wxString(title.wc_str(conv), wxConvLocal);
#endif
            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 )
                {
#if !defined(__WXMSW__) || wxUSE_WXDIB
                    wxImage image(*is);
                    if ( image.Ok() )
                        winIface->SetHTMLBackgroundImage(image);
#endif
                }
            }
        }

        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->GetScriptBaseline());

        // 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 WXPRECOMP
	19	#endif
	20
	21	#include "wx/image.h"
	22
	23	#include "wx/html/forcelnk.h"
	24	#include "wx/html/m_templ.h"
	25
	26	#include "wx/html/htmlwin.h"
	27
	28	FORCE_LINK_ME(m_layout)
	29
	30	#ifdef __WXWINCE__
	31	#include "wx/msw/wince/missing.h" // for bsearch()
	32	#else
	33	#include <stdlib.h> // bsearch()
	34	#endif
	35
	36	//-----------------------------------------------------------------------------
	37	// wxHtmlPageBreakCell
	38	//-----------------------------------------------------------------------------
	39
	40	// Since html isn't a page-layout language, it doesn't support page
	41	// page breaks directly--that requires CSS2 support. But a page-break
	42	// facility is handy, and has been requested more than once on the
	43	// mailing lists. This wxHtml tag handler implements just enough of
	44	// CSS2 to support a page break by recognizing only
	45	// <div style="page-break-before:always">
	46	//
	47	// wxHtml maintains page breaks in wxHtmlPrintout::m_PageBreaks. The
	48	// tag handler below adds appropriate offsets to that array member.
	49	// wxHtmlDCRenderer::Render() accesses that array and makes a new page
	50	// begin after each page-break tag.
	51
	52	// The page-break handler does all its work in AdjustPagebreak(). For
	53	// all tag handlers, that function adjusts the page-break position.
	54	// For other tags, it determines whether the html element can fit on
	55	// the remainder of the page; if it cannot fit, but must not be split,
	56	// then the function moves the page break provided in the argument up,
	57	// and returns 'true' to inform the caller that the argument was
	58	// modified.
	59	//
	60	// Due to its special purpose, the page-break facility differs from
	61	// other tags. It takes up no space, but it behaves as though there is
	62	// never enough room to fit it on the remainder of the page--it always
	63	// forces a page break. Therefore, unlike other elements that trigger
	64	// a page break, it would never 'fit' on the following page either.
	65	// Therefore it's necessary to compare each pagebreak candidate to the
	66	// array wxHtmlPrintout::m_PageBreaks of pagebreaks already set, and
	67	// set a new one only if it's not in that array.
	68
	69	class wxHtmlPageBreakCell : public wxHtmlCell
	70	{
	71	public:
	72	wxHtmlPageBreakCell() {}
	73
	74	bool AdjustPagebreak(int* pagebreak,
	75	int* known_pagebreaks = NULL,
	76	int number_of_pages = 0) const;
	77	void Draw(wxDC& WXUNUSED(dc),
	78	int WXUNUSED(x), int WXUNUSED(y),
	79	int WXUNUSED(view_y1), int WXUNUSED(view_y2),
	80	wxHtmlRenderingInfo& WXUNUSED(info)) {}
	81
	82	private:
	83	DECLARE_NO_COPY_CLASS(wxHtmlPageBreakCell)
	84	};
	85
	86	// Comparison routine for bsearch into an int* array of pagebreaks.
	87	extern "C" int wxCMPFUNC_CONV wxInteger_compare(void const* i0, void const* i1)
	88	{
	89	return (int)i0 - (int)i1;
	90	}
	91
	92	bool wxHtmlPageBreakCell::AdjustPagebreak(int* pagebreak, int* known_pagebreaks, int number_of_pages) const
	93	{
	94	// When we are counting pages, 'known_pagebreaks' is non-NULL.
	95	// That's the only time we change 'pagebreak'. Otherwise, pages
	96	// were already counted, 'known_pagebreaks' is NULL, and we don't
	97	// do anything except return false.
	98	//
	99	// We also simply return false if the 'pagebreak' argument is
	100	// less than (vertically above) or the same as the current
	101	// vertical position. Otherwise we'd be setting a pagebreak above
	102	// the current cell, which is incorrect, or duplicating a
	103	// pagebreak that has already been set.
	104	if(NULL == known_pagebreaks \|\| *pagebreak <= m_PosY)
	105	{
	106	return false;
	107	}
	108
	109	// m_PosY is only the vertical offset from the parent. The pagebreak
	110	// required here is the total page offset, so m_PosY must be added
	111	// to the parent's offset and height.
	112	int total_height = m_PosY + GetParent()->GetPosY() + GetParent()->GetHeight();
	113
	114	// Search the array of pagebreaks to see whether we've already set
	115	// a pagebreak here. The standard bsearch() function is appropriate
	116	// because the array of pagebreaks through known_pagebreaks[number_of_pages]
	117	// is known to be sorted in strictly increasing order. '1 + number_of_pages'
	118	// is used as a bsearch() argument because the array contains a leading
	119	// zero plus one element for each page.
	120	int* where = (int*) bsearch(&total_height, known_pagebreaks,
	121	1 + number_of_pages, sizeof(int),
	122	wxInteger_compare);
	123	// Add a pagebreak only if there isn't one already set here.
	124	if(NULL != where)
	125	{
	126	return false;
	127	}
	128	else
	129	{
	130	*pagebreak = m_PosY;
	131	return true;
	132	}
	133	}
	134
	135	TAG_HANDLER_BEGIN(P, "P")
	136	TAG_HANDLER_CONSTR(P) { }
	137
	138	TAG_HANDLER_PROC(tag)
	139	{
	140	if (m_WParser->GetContainer()->GetFirstChild() != NULL)
	141	{
	142	m_WParser->CloseContainer();
	143	m_WParser->OpenContainer();
	144	}
	145	m_WParser->GetContainer()->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
	146	m_WParser->GetContainer()->SetAlign(tag);
	147	return false;
	148	}
	149
	150	TAG_HANDLER_END(P)
	151
	152
	153
	154	TAG_HANDLER_BEGIN(BR, "BR")
	155	TAG_HANDLER_CONSTR(BR) { }
	156
	157	TAG_HANDLER_PROC(tag)
	158	{
	159	int al = m_WParser->GetContainer()->GetAlignHor();
	160	wxHtmlContainerCell *c;
	161
	162	m_WParser->CloseContainer();
	163	c = m_WParser->OpenContainer();
	164	c->SetAlignHor(al);
	165	c->SetAlign(tag);
	166	c->SetMinHeight(m_WParser->GetCharHeight());
	167	return false;
	168	}
	169
	170	TAG_HANDLER_END(BR)
	171
	172
	173
	174	TAG_HANDLER_BEGIN(CENTER, "CENTER")
	175	TAG_HANDLER_CONSTR(CENTER) { }
	176
	177	TAG_HANDLER_PROC(tag)
	178	{
	179	int old = m_WParser->GetAlign();
	180	wxHtmlContainerCell *c = m_WParser->GetContainer();
	181
	182	m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
	183	if (c->GetFirstChild() != NULL)
	184	{
	185	m_WParser->CloseContainer();
	186	m_WParser->OpenContainer();
	187	}
	188	else
	189	c->SetAlignHor(wxHTML_ALIGN_CENTER);
	190
	191	if (tag.HasEnding())
	192	{
	193	ParseInner(tag);
	194
	195	m_WParser->SetAlign(old);
	196	if (c->GetFirstChild() != NULL)
	197	{
	198	m_WParser->CloseContainer();
	199	m_WParser->OpenContainer();
	200	}
	201	else
	202	c->SetAlignHor(old);
	203
	204	return true;
	205	}
	206	else return false;
	207	}
	208
	209	TAG_HANDLER_END(CENTER)
	210
	211
	212
	213	TAG_HANDLER_BEGIN(DIV, "DIV")
	214	TAG_HANDLER_CONSTR(DIV) { }
	215
	216	TAG_HANDLER_PROC(tag)
	217	{
	218	if(tag.HasParam(wxT("STYLE")))
	219	{
	220	if(tag.GetParam(wxT("STYLE")).IsSameAs(wxT("PAGE-BREAK-BEFORE:ALWAYS"), false))
	221	{
	222	m_WParser->CloseContainer();
	223	m_WParser->OpenContainer()->InsertCell(new wxHtmlPageBreakCell);
	224	m_WParser->CloseContainer();
	225	m_WParser->OpenContainer();
	226	return false;
	227	}
	228	else
	229	{
	230	// Treat other STYLE parameters here when they're supported.
	231	return false;
	232	}
	233	}
	234	else if(tag.HasParam(wxT("ALIGN")))
	235	{
	236	int old = m_WParser->GetAlign();
	237	wxHtmlContainerCell *c = m_WParser->GetContainer();
	238	if (c->GetFirstChild() != NULL)
	239	{
	240	m_WParser->CloseContainer();
	241	m_WParser->OpenContainer();
	242	c = m_WParser->GetContainer();
	243	c->SetAlign(tag);
	244	m_WParser->SetAlign(c->GetAlignHor());
	245	}
	246	else
	247	{
	248	c->SetAlign(tag);
	249	m_WParser->SetAlign(c->GetAlignHor());
	250	}
	251
	252	ParseInner(tag);
	253
	254	m_WParser->SetAlign(old);
	255	if (c->GetFirstChild() != NULL)
	256	{
	257	m_WParser->CloseContainer();
	258	m_WParser->OpenContainer();
	259	}
	260	else
	261	c->SetAlignHor(old);
	262
	263	return true;
	264	}
	265	else
	266	{
	267	// Same as BR
	268	int al = m_WParser->GetContainer()->GetAlignHor();
	269	wxHtmlContainerCell *c;
	270
	271	m_WParser->CloseContainer();
	272	c = m_WParser->OpenContainer();
	273	c->SetAlignHor(al);
	274	c->SetAlign(tag);
	275	c->SetMinHeight(m_WParser->GetCharHeight());
	276	return false;
	277	}
	278	}
	279
	280	TAG_HANDLER_END(DIV)
	281
	282
	283
	284
	285	TAG_HANDLER_BEGIN(TITLE, "TITLE")
	286	TAG_HANDLER_CONSTR(TITLE) { }
	287
	288	TAG_HANDLER_PROC(tag)
	289	{
	290	wxHtmlWindowInterface *winIface = m_WParser->GetWindowInterface();
	291	if (winIface)
	292	{
	293	wxString title = m_WParser->GetSource()->Mid(
	294	tag.GetBeginPos(),
	295	tag.GetEndPos1()-tag.GetBeginPos());
	296	#if !wxUSE_UNICODE && wxUSE_WCHAR_T
	297	wxCSConv conv(m_WParser->GetInputEncoding());
	298	title = wxString(title.wc_str(conv), wxConvLocal);
	299	#endif
	300	title = m_WParser->GetEntitiesParser()->Parse(title);
	301
	302	winIface->SetHTMLWindowTitle(title);
	303	}
	304	return true;
	305	}
	306
	307	TAG_HANDLER_END(TITLE)
	308
	309
	310
	311
	312	TAG_HANDLER_BEGIN(BODY, "BODY")
	313	TAG_HANDLER_CONSTR(BODY) { }
	314
	315	TAG_HANDLER_PROC(tag)
	316	{
	317	wxColour clr;
	318
	319	if (tag.GetParamAsColour(wxT("TEXT"), &clr))
	320	{
	321	m_WParser->SetActualColor(clr);
	322	m_WParser->GetContainer()->InsertCell(new wxHtmlColourCell(clr));
	323	}
	324
	325	if (tag.GetParamAsColour(wxT("LINK"), &clr))
	326	m_WParser->SetLinkColor(clr);
	327
	328	wxHtmlWindowInterface *winIface = m_WParser->GetWindowInterface();
	329	// the rest of this function requires a window:
	330	if ( !winIface )
	331	return false;
	332
	333	if (tag.HasParam(wxT("BACKGROUND")))
	334	{
	335	wxFSFile *fileBgImage = m_WParser->OpenURL
	336	(
	337	wxHTML_URL_IMAGE,
	338	tag.GetParam(wxT("BACKGROUND"))
	339	);
	340	if ( fileBgImage )
	341	{
	342	wxInputStream *is = fileBgImage->GetStream();
	343	if ( is )
	344	{
	345	#if !defined(__WXMSW__) \|\| wxUSE_WXDIB
	346	wxImage image(*is);
	347	if ( image.Ok() )
	348	winIface->SetHTMLBackgroundImage(image);
	349	#endif
	350	}
	351	}
	352	}
	353
	354	if (tag.GetParamAsColour(wxT("BGCOLOR"), &clr))
	355	{
	356	m_WParser->GetContainer()->InsertCell(
	357	new wxHtmlColourCell(clr, wxHTML_CLR_BACKGROUND));
	358	winIface->SetHTMLBackgroundColour(clr);
	359	}
	360
	361	return false;
	362	}
	363
	364	TAG_HANDLER_END(BODY)
	365
	366
	367
	368	TAG_HANDLER_BEGIN(BLOCKQUOTE, "BLOCKQUOTE")
	369	TAG_HANDLER_CONSTR(BLOCKQUOTE) { }
	370
	371	TAG_HANDLER_PROC(tag)
	372	{
	373	wxHtmlContainerCell *c;
	374
	375	m_WParser->CloseContainer();
	376	c = m_WParser->OpenContainer();
	377
	378	if (c->GetAlignHor() == wxHTML_ALIGN_RIGHT)
	379	c->SetIndent(5 * m_WParser->GetCharWidth(), wxHTML_INDENT_RIGHT);
	380	else
	381	c->SetIndent(5 * m_WParser->GetCharWidth(), wxHTML_INDENT_LEFT);
	382
	383	c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
	384	m_WParser->OpenContainer();
	385	ParseInner(tag);
	386	c = m_WParser->CloseContainer();
	387	c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_BOTTOM);
	388	m_WParser->CloseContainer();
	389	m_WParser->OpenContainer();
	390	return true;
	391	}
	392
	393	TAG_HANDLER_END(BLOCKQUOTE)
	394
	395
	396
	397	TAG_HANDLER_BEGIN(SUBSUP, "SUB,SUP")
	398
	399	TAG_HANDLER_PROC(tag)
	400	{
	401	bool issub = (tag.GetName() == wxT("SUB"));
	402	wxHtmlScriptMode oldmode = m_WParser->GetScriptMode();
	403	int oldbase = m_WParser->GetScriptBaseline();
	404	int oldsize = m_WParser->GetFontSize();
	405
	406	wxHtmlContainerCell *cont = m_WParser->GetContainer();
	407	wxHtmlCell *c = cont->GetLastChild();
	408
	409	m_WParser->SetScriptMode(issub ? wxHTML_SCRIPT_SUB : wxHTML_SCRIPT_SUP);
	410	m_WParser->SetScriptBaseline(oldbase + c->GetScriptBaseline());
	411
	412	// select smaller font
	413	m_WParser->SetFontSize(m_WParser->GetFontSize()-2);
	414	cont->InsertCell(new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
	415
	416	ParseInner(tag);
	417
	418	// restore font size
	419	m_WParser->SetFontSize(oldsize);
	420	m_WParser->GetContainer()->InsertCell(
	421	new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
	422
	423	// restore base and alignment
	424	m_WParser->SetScriptBaseline(oldbase);
	425	m_WParser->SetScriptMode(oldmode);
	426
	427	return true;
	428	}
	429
	430	TAG_HANDLER_END(SUBSUP)
	431
	432
	433	// Tag handler for tags that we have to ignore, otherwise non-text data
	434	// would show up as text:
	435	TAG_HANDLER_BEGIN(DoNothing, "SCRIPT")
	436	TAG_HANDLER_CONSTR(DoNothing) { }
	437
	438	TAG_HANDLER_PROC(WXUNUSED(tag))
	439	{
	440	return true;
	441	}
	442	TAG_HANDLER_END(DoNothing)
	443
	444
	445
	446
	447
	448	TAGS_MODULE_BEGIN(Layout)
	449
	450	TAGS_MODULE_ADD(P)
	451	TAGS_MODULE_ADD(BR)
	452	TAGS_MODULE_ADD(CENTER)
	453	TAGS_MODULE_ADD(DIV)
	454	TAGS_MODULE_ADD(TITLE)
	455	TAGS_MODULE_ADD(BODY)
	456	TAGS_MODULE_ADD(BLOCKQUOTE)
	457	TAGS_MODULE_ADD(SUBSUP)
	458	TAGS_MODULE_ADD(DoNothing)
	459
	460	TAGS_MODULE_END(Layout)
	461
	462	#endif