src/html/m_image.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        m_image.cpp
// Purpose:     wxHtml module for displaying images
// Author:      Vaclav Slavik
// RCS-ID:      $Id$
// Copyright:   (c) 1999 Vaclav Slavik, Joel Lucsy
// Licence:     wxWindows Licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation
#endif

#include "wx/wxprec.h"

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

#ifdef __BORDLANDC__
#pragma hdrstop
#endif

#ifndef WXPRECOMP
#include "wx/wx.h"
#endif

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


#include "wx/image.h"
#include "wx/dynarray.h"

#include <math.h>
#include <float.h>

FORCE_LINK_ME(m_image)


WX_DECLARE_OBJARRAY(int, CoordArray);
#include "wx/arrimpl.cpp" // this is a magic incantation which must be done!
WX_DEFINE_OBJARRAY(CoordArray);


//--------------------------------------------------------------------------------
// wxHtmlImageMapAreaCell
//                  0-width, 0-height cell that represents single area in imagemap
//                  (it's GetLink is called from wxHtmlImageCell's)
//--------------------------------------------------------------------------------

class wxHtmlImageMapAreaCell : public wxHtmlCell
{
    public:
        enum celltype { CIRCLE, RECT, POLY };
    protected:
        CoordArray coords;
        celltype type;
        int radius;
    public:
        wxHtmlImageMapAreaCell( celltype t, wxString &coords, double pixel_scale = 1.0);
        virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
};


wxHtmlImageMapAreaCell::wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::celltype t, wxString &incoords, double pixel_scale )
{
    int i;
    wxString x = incoords, y;

    type = t;
    while ((i = x.Find( ',' )) != -1)
    {
        coords.Add( (int)(pixel_scale * (double)wxAtoi( x.Left( i ).c_str())) );
        x = x.Mid( i + 1 );
    }
    coords.Add( (int)(pixel_scale * (double)wxAtoi( x.c_str())) );
}

wxHtmlLinkInfo *wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
{
    switch (type)
    {
        case RECT:
            {
                int l, t, r, b;

                l = coords[ 0 ];
                t = coords[ 1 ];
                r = coords[ 2 ];
                b = coords[ 3 ];
                if (x >= l && x <= r && y >= t && y <= b)
		        {
                    return m_Link;
                }
                break;
            }
        case CIRCLE:
            {
                int l, t, r;
                double  d;

                l = coords[ 0 ];
                t = coords[ 1 ];
                r = coords[ 2 ];
                d = sqrt( (double) (((x - l) * (x - l)) + ((y - t) * (y - t))) );
                if (d < (double)r)
		        {
                    return m_Link;
                }
            }
            break;
        case POLY:
            {
                if (coords.GetCount() >= 6)
		        {
                    int intersects = 0;
                    int wherex = x;
                    int wherey = y;
                    int totalv = coords.GetCount() / 2;
                    int totalc = totalv * 2;
                    int xval = coords[totalc - 2];
                    int yval = coords[totalc - 1];
                    int end = totalc;
                    int pointer = 1;

                    if ((yval >= wherey) != (coords[pointer] >= wherey))
		            {
                        if ((xval >= wherex) == (coords[0] >= wherex))
			            {
                            intersects += (xval >= wherex) ? 1 : 0;
                        }
			            else
				        {
                            intersects += ((xval - (yval - wherey) *
                                            (coords[0] - xval) /
                                            (coords[pointer] - yval)) >= wherex) ? 1 : 0;
                        }
                    }

                    while (pointer < end)
		            {
                        yval = coords[pointer];
                        pointer += 2;
                        if (yval >= wherey)
			            {
                            while ((pointer < end) && (coords[pointer] >= wherey))
			                {
                                pointer += 2;
                            }
                            if (pointer >= end)
			                {
                                break;
                            }
                            if ((coords[pointer - 3] >= wherex) ==
                                    (coords[pointer - 1] >= wherex)) {
                                intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
                            }
			                else
					        {
                                intersects +=
                                    ((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
                                      (coords[pointer - 1] - coords[pointer - 3]) /
                                      (coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
                            }
                        }
			            else
				        {
                            while ((pointer < end) && (coords[pointer] < wherey))
			                {
                                pointer += 2;
                            }
                            if (pointer >= end)
			                {
                                break;
                            }
                            if ((coords[pointer - 3] >= wherex) ==
                                    (coords[pointer - 1] >= wherex))
				            {
                                intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
                            }
			                else
					        {
                                intersects +=
                                    ((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
                                      (coords[pointer - 1] - coords[pointer - 3]) /
                                      (coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
                            }
                        }
                    }
                    if ((intersects & 1) != 0)
		            {
                        return m_Link;
                    }
                }
            }
            break;
    }

    if (m_Next)
    {
        wxHtmlImageMapAreaCell  *a = (wxHtmlImageMapAreaCell*)m_Next;
        return a->GetLink( x, y );
    }
    return NULL;
}


//--------------------------------------------------------------------------------
// wxHtmlImageMapCell
//                  0-width, 0-height cell that represents map from imagemaps
//                  it is always placed before wxHtmlImageMapAreaCells
//                  It responds to Find(wxHTML_COND_ISIMAGEMAP)
//--------------------------------------------------------------------------------


class wxHtmlImageMapCell : public wxHtmlCell
{
    public:
        wxHtmlImageMapCell( wxString &name );
    protected:
        wxString m_Name;
    public:
        virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
        virtual const wxHtmlCell *Find( int cond, const void *param ) const;
};


wxHtmlImageMapCell::wxHtmlImageMapCell( wxString &name )
{
    m_Name = name ;
}

wxHtmlLinkInfo *wxHtmlImageMapCell::GetLink( int x, int y ) const
{
    wxHtmlImageMapAreaCell  *a = (wxHtmlImageMapAreaCell*)m_Next;
    if (a)
        return a->GetLink( x, y );
    return wxHtmlCell::GetLink( x, y );
}

const wxHtmlCell *wxHtmlImageMapCell::Find( int cond, const void *param ) const
{
    if (cond == wxHTML_COND_ISIMAGEMAP)
    {
        if (m_Name == *((wxString*)(param)))
            return this;
    }
    return wxHtmlCell::Find(cond, param);
}


//--------------------------------------------------------------------------------
// wxHtmlImageCell
//                  Image/bitmap
//--------------------------------------------------------------------------------

class wxHtmlImageCell : public wxHtmlCell
{
    public:
        wxBitmap *m_Image;
        double m_Scale;
        wxHtmlImageMapCell *m_ImageMap;
        wxString m_MapName;

        wxHtmlImageCell(wxFSFile *input, int w = -1, int h = -1, double scale = 1.0, int align = wxHTML_ALIGN_BOTTOM, wxString mapname = wxEmptyString);
        ~wxHtmlImageCell() {if (m_Image) delete m_Image; }
        void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
        virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
};


//--------------------------------------------------------------------------------
// wxHtmlImageCell
//--------------------------------------------------------------------------------

wxHtmlImageCell::wxHtmlImageCell(wxFSFile *input, int w, int h, double scale, int align, wxString mapname) : wxHtmlCell()
{
    wxImage *img;
    int ww, hh, bw, bh;
    wxInputStream *s = input->GetStream();

    m_Scale = scale;
    img = new wxImage(*s, wxBITMAP_TYPE_ANY);
    m_Image = NULL;
    if (img && (img->Ok()))
    {
        ww = img->GetWidth();
        hh = img->GetHeight();
        if (w != -1) bw = w; else bw = ww;
        if (h != -1) bh = h; else bh = hh;

        m_Width = (int)(scale * (double)bw);
        m_Height = (int)(scale * (double)bh);

        if ((bw != ww) || (bh != hh))
	    {
            wxImage img2 = img->Scale(bw, bh);
            m_Image = new wxBitmap(img2.ConvertToBitmap());
        }
	    else
            m_Image = new wxBitmap(img->ConvertToBitmap());
        delete img;
    }
    switch (align)
    {
        case wxHTML_ALIGN_TOP :
            m_Descent = m_Height;
            break;
        case wxHTML_ALIGN_CENTER :
            m_Descent = m_Height / 2;
            break;
        case wxHTML_ALIGN_BOTTOM :
        default :
            m_Descent = 0;
            break;
    }

    m_ImageMap = NULL;
    m_MapName = mapname;
    SetCanLiveOnPagebreak(FALSE);
}


void wxHtmlImageCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
{
    if (m_Image)
    {
        double us_x, us_y;
        dc.GetUserScale(&us_x, &us_y);
        dc.SetUserScale(us_x * m_Scale, us_y * m_Scale);

//      dc.DrawBitmap(*m_Image, x + m_PosX, y + m_PosY, (m_Image->GetMask() != (wxMask*) 0));
        dc.DrawBitmap(*m_Image, (int) ((x + m_PosX) / m_Scale),
                                (int) ((y + m_PosY) / m_Scale), TRUE);
        dc.SetUserScale(us_x, us_y);
    }
    wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
}

wxHtmlLinkInfo *wxHtmlImageCell::GetLink( int x, int y ) const
{
    if (m_MapName.IsEmpty())
        return wxHtmlCell::GetLink( x, y );
    if (!m_ImageMap)
    {
        wxHtmlContainerCell *p, *op;
        op = p = GetParent();
        while (p)
	    {
            op = p;
            p = p->GetParent();
        }
        p = op;
        wxHtmlCell *cell = (wxHtmlCell*)p->Find( wxHTML_COND_ISIMAGEMAP, (const void*)(&m_MapName));
        if (!cell)
	    {
            ((wxString&)m_MapName).Clear();
            return wxHtmlCell::GetLink( x, y );
        }
        {   // dirty hack, ask Joel why he fills m_ImageMap in this place
            // THE problem is that we're in const method and we can't modify m_ImageMap
            wxHtmlImageMapCell **cx = (wxHtmlImageMapCell**)(&m_ImageMap);
            *cx = (wxHtmlImageMapCell*)cell;
        }
    }
    return m_ImageMap->GetLink( x, y );
}


//--------------------------------------------------------------------------------
// tag handler
//--------------------------------------------------------------------------------

TAG_HANDLER_BEGIN(IMG, "IMG,MAP,AREA")

    TAG_HANDLER_PROC(tag)
    {
        if (tag.GetName() == wxT("IMG"))
	    {
            if (tag.HasParam(wxT("SRC")))
	        {
                int w = -1, h = -1;
                int al;
                wxFSFile *str;
                wxString tmp = tag.GetParam(wxT("SRC"));
                wxString mn = wxEmptyString;

                str = m_WParser->GetFS()->OpenFile(tmp);
                if (tag.HasParam(wxT("WIDTH")))
                    tag.GetParamAsInt(wxT("WIDTH"), &w);
                if (tag.HasParam(wxT("HEIGHT")))
                    tag.GetParamAsInt(wxT("HEIGHT"), &h);
                al = wxHTML_ALIGN_BOTTOM;
                if (tag.HasParam(wxT("ALIGN")))
		        {
                    wxString alstr = tag.GetParam(wxT("ALIGN"));
                    alstr.MakeUpper();  // for the case alignment was in ".."
                    if (alstr == wxT("TEXTTOP"))
                        al = wxHTML_ALIGN_TOP;
                    else if ((alstr == wxT("CENTER")) || (alstr == wxT("ABSCENTER")))
                        al = wxHTML_ALIGN_CENTER;
                }
                if (tag.HasParam(wxT("USEMAP")))
		        {
                    mn = tag.GetParam( wxT("USEMAP") );
                    if (mn.GetChar(0) == wxT('#'))
		            {
                        mn = mn.Mid( 1 );
                    }
                }
                wxHtmlImageCell *cel = NULL;
                if (str)
		        {
                    cel = new wxHtmlImageCell(str, w, h, m_WParser->GetPixelScale(), al, mn);
                    cel->SetLink(m_WParser->GetLink());
                    m_WParser->GetContainer()->InsertCell(cel);
                    delete str;
                }
            }
        }
        if (tag.GetName() == wxT("MAP"))
	    {
            m_WParser->CloseContainer();
            m_WParser->OpenContainer();
            if (tag.HasParam(wxT("NAME")))
	        {
                wxString tmp = tag.GetParam(wxT("NAME"));
                wxHtmlImageMapCell *cel = new wxHtmlImageMapCell( tmp );
                m_WParser->GetContainer()->InsertCell( cel );
            }
            ParseInner( tag );
            m_WParser->CloseContainer();
            m_WParser->OpenContainer();
        }
        if (tag.GetName() == wxT("AREA"))
	    {
            if (tag.HasParam(wxT("SHAPE")))
	        {
                wxString tmp = tag.GetParam(wxT("SHAPE"));
                wxString coords = wxEmptyString;
                tmp.MakeUpper();
                wxHtmlImageMapAreaCell *cel = NULL;
                if (tag.HasParam(wxT("COORDS")))
		        {
                    coords = tag.GetParam(wxT("COORDS"));
                }
                if (tmp == wxT("POLY"))
		        {
                    cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::POLY, coords, m_WParser->GetPixelScale() );
                }
		        else if (tmp == wxT("CIRCLE"))
		        {
                    cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::CIRCLE, coords, m_WParser->GetPixelScale() );
                }
		        else if (tmp == wxT("RECT"))
			    {
                    cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::RECT, coords, m_WParser->GetPixelScale() );
                }
                if (cel != NULL && tag.HasParam(wxT("HREF")))
		        {
                    wxString tmp = tag.GetParam(wxT("HREF"));
                    wxString target = wxEmptyString;
                    if (tag.HasParam(wxT("TARGET"))) target = tag.GetParam(wxT("TARGET"));
                    cel->SetLink( wxHtmlLinkInfo(tmp, target));
                }
                if (cel != NULL) m_WParser->GetContainer()->InsertCell( cel );
            }
        }

        return FALSE;
    }

TAG_HANDLER_END(IMG)


TAGS_MODULE_BEGIN(Image)

    TAGS_MODULE_ADD(IMG)

TAGS_MODULE_END(Image)


#endif
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: m_image.cpp
	3	// Purpose: wxHtml module for displaying images
	4	// Author: Vaclav Slavik
	5	// RCS-ID: $Id$
	6	// Copyright: (c) 1999 Vaclav Slavik, Joel Lucsy
	7	// Licence: wxWindows Licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifdef __GNUG__
	11	#pragma implementation
	12	#endif
	13
	14	#include "wx/wxprec.h"
	15
	16	#include "wx/defs.h"
	17	#if wxUSE_HTML && wxUSE_STREAMS
	18
	19	#ifdef __BORDLANDC__
	20	#pragma hdrstop
	21	#endif
	22
	23	#ifndef WXPRECOMP
	24	#include "wx/wx.h"
	25	#endif
	26
	27	#include "wx/html/forcelnk.h"
	28	#include "wx/html/m_templ.h"
	29
	30
	31	#include "wx/image.h"
	32	#include "wx/dynarray.h"
	33
	34	#include <math.h>
	35	#include <float.h>
	36
	37	FORCE_LINK_ME(m_image)
	38
	39
	40
	41
	42	WX_DECLARE_OBJARRAY(int, CoordArray);
	43	#include "wx/arrimpl.cpp" // this is a magic incantation which must be done!
	44	WX_DEFINE_OBJARRAY(CoordArray);
	45
	46
	47	//--------------------------------------------------------------------------------
	48	// wxHtmlImageMapAreaCell
	49	// 0-width, 0-height cell that represents single area in imagemap
	50	// (it's GetLink is called from wxHtmlImageCell's)
	51	//--------------------------------------------------------------------------------
	52
	53	class wxHtmlImageMapAreaCell : public wxHtmlCell
	54	{
	55	public:
	56	enum celltype { CIRCLE, RECT, POLY };
	57	protected:
	58	CoordArray coords;
	59	celltype type;
	60	int radius;
	61	public:
	62	wxHtmlImageMapAreaCell( celltype t, wxString &coords, double pixel_scale = 1.0);
	63	virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
	64	};
	65
	66
	67
	68
	69
	70	wxHtmlImageMapAreaCell::wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::celltype t, wxString &incoords, double pixel_scale )
	71	{
	72	int i;
	73	wxString x = incoords, y;
	74
	75	type = t;
	76	while ((i = x.Find( ',' )) != -1)
	77	{
	78	coords.Add( (int)(pixel_scale * (double)wxAtoi( x.Left( i ).c_str())) );
	79	x = x.Mid( i + 1 );
	80	}
	81	coords.Add( (int)(pixel_scale * (double)wxAtoi( x.c_str())) );
	82	}
	83
	84	wxHtmlLinkInfo *wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
	85	{
	86	switch (type)
	87	{
	88	case RECT:
	89	{
	90	int l, t, r, b;
	91
	92	l = coords[ 0 ];
	93	t = coords[ 1 ];
	94	r = coords[ 2 ];
	95	b = coords[ 3 ];
	96	if (x >= l && x <= r && y >= t && y <= b)
	97	{
	98	return m_Link;
	99	}
	100	break;
	101	}
	102	case CIRCLE:
	103	{
	104	int l, t, r;
	105	double d;
	106
	107	l = coords[ 0 ];
	108	t = coords[ 1 ];
	109	r = coords[ 2 ];
	110	d = sqrt( (double) (((x - l) * (x - l)) + ((y - t) * (y - t))) );
	111	if (d < (double)r)
	112	{
	113	return m_Link;
	114	}
	115	}
	116	break;
	117	case POLY:
	118	{
	119	if (coords.GetCount() >= 6)
	120	{
	121	int intersects = 0;
	122	int wherex = x;
	123	int wherey = y;
	124	int totalv = coords.GetCount() / 2;
	125	int totalc = totalv * 2;
	126	int xval = coords[totalc - 2];
	127	int yval = coords[totalc - 1];
	128	int end = totalc;
	129	int pointer = 1;
	130
	131	if ((yval >= wherey) != (coords[pointer] >= wherey))
	132	{
	133	if ((xval >= wherex) == (coords[0] >= wherex))
	134	{
	135	intersects += (xval >= wherex) ? 1 : 0;
	136	}
	137	else
	138	{
	139	intersects += ((xval - (yval - wherey) *
	140	(coords[0] - xval) /
	141	(coords[pointer] - yval)) >= wherex) ? 1 : 0;
	142	}
	143	}
	144
	145	while (pointer < end)
	146	{
	147	yval = coords[pointer];
	148	pointer += 2;
	149	if (yval >= wherey)
	150	{
	151	while ((pointer < end) && (coords[pointer] >= wherey))
	152	{
	153	pointer += 2;
	154	}
	155	if (pointer >= end)
	156	{
	157	break;
	158	}
	159	if ((coords[pointer - 3] >= wherex) ==
	160	(coords[pointer - 1] >= wherex)) {
	161	intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
	162	}
	163	else
	164	{
	165	intersects +=
	166	((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
	167	(coords[pointer - 1] - coords[pointer - 3]) /
	168	(coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
	169	}
	170	}
	171	else
	172	{
	173	while ((pointer < end) && (coords[pointer] < wherey))
	174	{
	175	pointer += 2;
	176	}
	177	if (pointer >= end)
	178	{
	179	break;
	180	}
	181	if ((coords[pointer - 3] >= wherex) ==
	182	(coords[pointer - 1] >= wherex))
	183	{
	184	intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
	185	}
	186	else
	187	{
	188	intersects +=
	189	((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
	190	(coords[pointer - 1] - coords[pointer - 3]) /
	191	(coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
	192	}
	193	}
	194	}
	195	if ((intersects & 1) != 0)
	196	{
	197	return m_Link;
	198	}
	199	}
	200	}
	201	break;
	202	}
	203
	204	if (m_Next)
	205	{
	206	wxHtmlImageMapAreaCell a = (wxHtmlImageMapAreaCell)m_Next;
	207	return a->GetLink( x, y );
	208	}
	209	return NULL;
	210	}
	211
	212
	213
	214
	215
	216
	217
	218
	219	//--------------------------------------------------------------------------------
	220	// wxHtmlImageMapCell
	221	// 0-width, 0-height cell that represents map from imagemaps
	222	// it is always placed before wxHtmlImageMapAreaCells
	223	// It responds to Find(wxHTML_COND_ISIMAGEMAP)
	224	//--------------------------------------------------------------------------------
	225
	226
	227	class wxHtmlImageMapCell : public wxHtmlCell
	228	{
	229	public:
	230	wxHtmlImageMapCell( wxString &name );
	231	protected:
	232	wxString m_Name;
	233	public:
	234	virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
	235	virtual const wxHtmlCell Find( int cond, const void param ) const;
	236	};
	237
	238
	239	wxHtmlImageMapCell::wxHtmlImageMapCell( wxString &name )
	240	{
	241	m_Name = name ;
	242	}
	243
	244	wxHtmlLinkInfo *wxHtmlImageMapCell::GetLink( int x, int y ) const
	245	{
	246	wxHtmlImageMapAreaCell a = (wxHtmlImageMapAreaCell)m_Next;
	247	if (a)
	248	return a->GetLink( x, y );
	249	return wxHtmlCell::GetLink( x, y );
	250	}
	251
	252	const wxHtmlCell wxHtmlImageMapCell::Find( int cond, const void param ) const
	253	{
	254	if (cond == wxHTML_COND_ISIMAGEMAP)
	255	{
	256	if (m_Name == ((wxString)(param)))
	257	return this;
	258	}
	259	return wxHtmlCell::Find(cond, param);
	260	}
	261
	262
	263
	264
	265
	266	//--------------------------------------------------------------------------------
	267	// wxHtmlImageCell
	268	// Image/bitmap
	269	//--------------------------------------------------------------------------------
	270
	271	class wxHtmlImageCell : public wxHtmlCell
	272	{
	273	public:
	274	wxBitmap *m_Image;
	275	double m_Scale;
	276	wxHtmlImageMapCell *m_ImageMap;
	277	wxString m_MapName;
	278
	279	wxHtmlImageCell(wxFSFile *input, int w = -1, int h = -1, double scale = 1.0, int align = wxHTML_ALIGN_BOTTOM, wxString mapname = wxEmptyString);
	280	~wxHtmlImageCell() {if (m_Image) delete m_Image; }
	281	void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
	282	virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
	283	};
	284
	285
	286
	287
	288	//--------------------------------------------------------------------------------
	289	// wxHtmlImageCell
	290	//--------------------------------------------------------------------------------
	291
	292	wxHtmlImageCell::wxHtmlImageCell(wxFSFile *input, int w, int h, double scale, int align, wxString mapname) : wxHtmlCell()
	293	{
	294	wxImage *img;
	295	int ww, hh, bw, bh;
	296	wxInputStream *s = input->GetStream();
	297
	298	m_Scale = scale;
	299	img = new wxImage(*s, wxBITMAP_TYPE_ANY);
	300	m_Image = NULL;
	301	if (img && (img->Ok()))
	302	{
	303	ww = img->GetWidth();
	304	hh = img->GetHeight();
	305	if (w != -1) bw = w; else bw = ww;
	306	if (h != -1) bh = h; else bh = hh;
	307
	308	m_Width = (int)(scale * (double)bw);
	309	m_Height = (int)(scale * (double)bh);
	310
	311	if ((bw != ww) \|\| (bh != hh))
	312	{
	313	wxImage img2 = img->Scale(bw, bh);
	314	m_Image = new wxBitmap(img2.ConvertToBitmap());
	315	}
	316	else
	317	m_Image = new wxBitmap(img->ConvertToBitmap());
	318	delete img;
	319	}
	320	switch (align)
	321	{
	322	case wxHTML_ALIGN_TOP :
	323	m_Descent = m_Height;
	324	break;
	325	case wxHTML_ALIGN_CENTER :
	326	m_Descent = m_Height / 2;
	327	break;
	328	case wxHTML_ALIGN_BOTTOM :
	329	default :
	330	m_Descent = 0;
	331	break;
	332	}
	333
	334	m_ImageMap = NULL;
	335	m_MapName = mapname;
	336	SetCanLiveOnPagebreak(FALSE);
	337	}
	338
	339
	340
	341	void wxHtmlImageCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
	342	{
	343	if (m_Image)
	344	{
	345	double us_x, us_y;
	346	dc.GetUserScale(&us_x, &us_y);
	347	dc.SetUserScale(us_x * m_Scale, us_y * m_Scale);
	348
	349	// dc.DrawBitmap(m_Image, x + m_PosX, y + m_PosY, (m_Image->GetMask() != (wxMask) 0));
	350	dc.DrawBitmap(*m_Image, (int) ((x + m_PosX) / m_Scale),
	351	(int) ((y + m_PosY) / m_Scale), TRUE);
	352	dc.SetUserScale(us_x, us_y);
	353	}
	354	wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
	355	}
	356
	357	wxHtmlLinkInfo *wxHtmlImageCell::GetLink( int x, int y ) const
	358	{
	359	if (m_MapName.IsEmpty())
	360	return wxHtmlCell::GetLink( x, y );
	361	if (!m_ImageMap)
	362	{
	363	wxHtmlContainerCell p, op;
	364	op = p = GetParent();
	365	while (p)
	366	{
	367	op = p;
	368	p = p->GetParent();
	369	}
	370	p = op;
	371	wxHtmlCell cell = (wxHtmlCell)p->Find( wxHTML_COND_ISIMAGEMAP, (const void*)(&m_MapName));
	372	if (!cell)
	373	{
	374	((wxString&)m_MapName).Clear();
	375	return wxHtmlCell::GetLink( x, y );
	376	}
	377	{ // dirty hack, ask Joel why he fills m_ImageMap in this place
	378	// THE problem is that we're in const method and we can't modify m_ImageMap
	379	wxHtmlImageMapCell cx = (wxHtmlImageMapCell)(&m_ImageMap);
	380	cx = (wxHtmlImageMapCell)cell;
	381	}
	382	}
	383	return m_ImageMap->GetLink( x, y );
	384	}
	385
	386
	387
	388	//--------------------------------------------------------------------------------
	389	// tag handler
	390	//--------------------------------------------------------------------------------
	391
	392	TAG_HANDLER_BEGIN(IMG, "IMG,MAP,AREA")
	393
	394	TAG_HANDLER_PROC(tag)
	395	{
	396	if (tag.GetName() == wxT("IMG"))
	397	{
	398	if (tag.HasParam(wxT("SRC")))
	399	{
	400	int w = -1, h = -1;
	401	int al;
	402	wxFSFile *str;
	403	wxString tmp = tag.GetParam(wxT("SRC"));
	404	wxString mn = wxEmptyString;
	405
	406	str = m_WParser->GetFS()->OpenFile(tmp);
	407	if (tag.HasParam(wxT("WIDTH")))
	408	tag.GetParamAsInt(wxT("WIDTH"), &w);
	409	if (tag.HasParam(wxT("HEIGHT")))
	410	tag.GetParamAsInt(wxT("HEIGHT"), &h);
	411	al = wxHTML_ALIGN_BOTTOM;
	412	if (tag.HasParam(wxT("ALIGN")))
	413	{
	414	wxString alstr = tag.GetParam(wxT("ALIGN"));
	415	alstr.MakeUpper(); // for the case alignment was in ".."
	416	if (alstr == wxT("TEXTTOP"))
	417	al = wxHTML_ALIGN_TOP;
	418	else if ((alstr == wxT("CENTER")) \|\| (alstr == wxT("ABSCENTER")))
	419	al = wxHTML_ALIGN_CENTER;
	420	}
	421	if (tag.HasParam(wxT("USEMAP")))
	422	{
	423	mn = tag.GetParam( wxT("USEMAP") );
	424	if (mn.GetChar(0) == wxT('#'))
	425	{
	426	mn = mn.Mid( 1 );
	427	}
	428	}
	429	wxHtmlImageCell *cel = NULL;
	430	if (str)
	431	{
	432	cel = new wxHtmlImageCell(str, w, h, m_WParser->GetPixelScale(), al, mn);
	433	cel->SetLink(m_WParser->GetLink());
	434	m_WParser->GetContainer()->InsertCell(cel);
	435	delete str;
	436	}
	437	}
	438	}
	439	if (tag.GetName() == wxT("MAP"))
	440	{
	441	m_WParser->CloseContainer();
	442	m_WParser->OpenContainer();
	443	if (tag.HasParam(wxT("NAME")))
	444	{
	445	wxString tmp = tag.GetParam(wxT("NAME"));
	446	wxHtmlImageMapCell *cel = new wxHtmlImageMapCell( tmp );
	447	m_WParser->GetContainer()->InsertCell( cel );
	448	}
	449	ParseInner( tag );
	450	m_WParser->CloseContainer();
	451	m_WParser->OpenContainer();
	452	}
	453	if (tag.GetName() == wxT("AREA"))
	454	{
	455	if (tag.HasParam(wxT("SHAPE")))
	456	{
	457	wxString tmp = tag.GetParam(wxT("SHAPE"));
	458	wxString coords = wxEmptyString;
	459	tmp.MakeUpper();
	460	wxHtmlImageMapAreaCell *cel = NULL;
	461	if (tag.HasParam(wxT("COORDS")))
	462	{
	463	coords = tag.GetParam(wxT("COORDS"));
	464	}
	465	if (tmp == wxT("POLY"))
	466	{
	467	cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::POLY, coords, m_WParser->GetPixelScale() );
	468	}
	469	else if (tmp == wxT("CIRCLE"))
	470	{
	471	cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::CIRCLE, coords, m_WParser->GetPixelScale() );
	472	}
	473	else if (tmp == wxT("RECT"))
	474	{
	475	cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::RECT, coords, m_WParser->GetPixelScale() );
	476	}
	477	if (cel != NULL && tag.HasParam(wxT("HREF")))
	478	{
	479	wxString tmp = tag.GetParam(wxT("HREF"));
	480	wxString target = wxEmptyString;
	481	if (tag.HasParam(wxT("TARGET"))) target = tag.GetParam(wxT("TARGET"));
	482	cel->SetLink( wxHtmlLinkInfo(tmp, target));
	483	}
	484	if (cel != NULL) m_WParser->GetContainer()->InsertCell( cel );
	485	}
	486	}
	487
	488	return FALSE;
	489	}
	490
	491	TAG_HANDLER_END(IMG)
	492
	493
	494
	495	TAGS_MODULE_BEGIN(Image)
	496
	497	TAGS_MODULE_ADD(IMG)
	498
	499	TAGS_MODULE_END(Image)
	500
	501
	502	#endif