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/dc.h"
    #include "wx/scrolwin.h"
    #include "wx/timer.h"
    #include "wx/dcmemory.h"
#endif

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

#include "wx/image.h"
#include "wx/gifdecod.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:
    wxHtmlImageCell(wxWindow *window,
                    wxFSFile *input, int w = -1, int h = -1,
                    double scale = 1.0, int align = wxHTML_ALIGN_BOTTOM,
                    const wxString& mapname = wxEmptyString);
    ~wxHtmlImageCell();
    void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
    virtual wxHtmlLinkInfo *GetLink(int x = 0, int y = 0) const;

    void SetImage(const wxImage& img);
#if wxUSE_GIF && wxUSE_TIMER
    void AdvanceAnimation(wxTimer *timer);
    virtual void Layout(int w);
#endif

private:
    wxBitmap           *m_bitmap;
    int                 m_bmpW, m_bmpH;
    wxScrolledWindow   *m_window;
#if wxUSE_GIF && wxUSE_TIMER
    wxGIFDecoder       *m_gifDecoder;
    wxTimer            *m_gifTimer;
    int                 m_physX, m_physY;
#endif
    double              m_scale;
    wxHtmlImageMapCell *m_imageMap;
    wxString            m_mapName;
};

#if wxUSE_GIF && wxUSE_TIMER
class wxGIFTimer : public wxTimer
{
    public:
        wxGIFTimer(wxHtmlImageCell *cell) : m_cell(cell) {}
        virtual void Notify()
        {
            m_cell->AdvanceAnimation(this);
        }

    private:
        wxHtmlImageCell *m_cell;
};
#endif


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

wxHtmlImageCell::wxHtmlImageCell(wxWindow *window, wxFSFile *input,
                                 int w, int h, double scale, int align,
                                 const wxString& mapname) : wxHtmlCell()
{
    m_window = window ? wxStaticCast(window, wxScrolledWindow) : NULL;
    m_scale = scale;
    m_bitmap = NULL;
    m_bmpW = w;
    m_bmpH = h;
    m_imageMap = NULL;
    m_mapName = mapname;
    SetCanLiveOnPagebreak(FALSE);
#if wxUSE_GIF && wxUSE_TIMER
    m_gifDecoder = NULL;
    m_gifTimer = NULL;
    m_physX = m_physY = -1;
#endif

    wxInputStream *s = input->GetStream();

    if ( s )
    {
        bool readImg = TRUE;

#if wxUSE_GIF && wxUSE_TIMER
        if ( (input->GetLocation().Matches(wxT("*.gif")) ||
              input->GetLocation().Matches(wxT("*.GIF"))) && m_window )
        {
            m_gifDecoder = new wxGIFDecoder(s, TRUE);
            if ( m_gifDecoder->ReadGIF() == wxGIF_OK )
            {
                wxImage img;
                if ( m_gifDecoder->ConvertToImage(&img) )
                    SetImage(img);

                readImg = FALSE;

                if ( m_gifDecoder->IsAnimation() )
                {
                    m_gifTimer = new wxGIFTimer(this);
                    m_gifTimer->Start(m_gifDecoder->GetDelay(), TRUE);
                }
                else
                {
                    wxDELETE(m_gifDecoder);
                }
            }
            else
            {
                wxDELETE(m_gifDecoder);
            }
        }

        if ( readImg )
#endif
        {
            SetImage(wxImage(*s, wxBITMAP_TYPE_ANY));
        }
    }

    m_Width = (int)(scale * (double)m_bmpW);
    m_Height = (int)(scale * (double)m_bmpH);

    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;
    }
 }

void wxHtmlImageCell::SetImage(const wxImage& img)
{
    if ( img.Ok() )
    {
        delete m_bitmap;

        int ww, hh;
        ww = img.GetWidth();
        hh = img.GetHeight();

        if ( m_bmpW == -1 )
            m_bmpW = ww;
        if ( m_bmpH == -1 )
            m_bmpH = hh;

        if ((m_bmpW != ww) || (m_bmpH != hh))
        {
            wxImage img2 = img.Scale(m_bmpW, m_bmpH);
            m_bitmap = new wxBitmap(img2);
        }
        else
            m_bitmap = new wxBitmap(img);
    }
}

#if wxUSE_GIF && wxUSE_TIMER
void wxHtmlImageCell::AdvanceAnimation(wxTimer *timer)
{
    wxImage img;

    m_gifDecoder->GoNextFrame(TRUE);

    if ( m_physX == -1 )
    {
        m_physX = m_physY = 0;
        for (wxHtmlCell *cell = this; cell; cell = cell->GetParent())
        {
            m_physX += cell->GetPosX();
            m_physY += cell->GetPosY();
        }
    }

    int x, y;
    m_window->CalcScrolledPosition(m_physX, m_physY, &x, &y);
    wxRect rect(x, y, m_Width, m_Height);

    if ( m_window->GetClientRect().Intersects(rect) &&
         m_gifDecoder->ConvertToImage(&img) )
    {
        if ( (int)m_gifDecoder->GetWidth() != m_Width ||
             (int)m_gifDecoder->GetHeight() != m_Height ||
             m_gifDecoder->GetLeft() != 0 || m_gifDecoder->GetTop() != 0 )
        {
            wxBitmap bmp(img);
            wxMemoryDC dc;
            dc.SelectObject(*m_bitmap);
            dc.DrawBitmap(bmp, m_gifDecoder->GetLeft(), m_gifDecoder->GetTop());
        }
        else
            SetImage(img);
        m_window->Refresh(img.HasMask(), &rect);
    }

    timer->Start(m_gifDecoder->GetDelay(), TRUE);
}

void wxHtmlImageCell::Layout(int w)
{
    wxHtmlCell::Layout(w);
    m_physX = m_physY = -1;
}

#endif

wxHtmlImageCell::~wxHtmlImageCell()
{
    delete m_bitmap;
#if wxUSE_GIF && wxUSE_TIMER
    delete m_gifTimer;
    delete m_gifDecoder;
#endif
}


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

        dc.DrawBitmap(*m_bitmap, (int) ((x + m_PosX) / m_scale),
                                 (int) ((y + m_PosY) / m_scale), TRUE);
        dc.SetUserScale(us_x, us_y);
    }
}

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;

                if ( !m_WParser->CanOpenURL(tmp) )
                    return FALSE;

                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(m_WParser->GetWindow(),
                                              str, w, h,
                                              m_WParser->GetPixelScale(),
                                              al, mn);
                    cel->SetLink(m_WParser->GetLink());
                    cel->SetId(tag.GetParam(wxT("id"))); // may be empty
                    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/dc.h"
	25	#include "wx/scrolwin.h"
	26	#include "wx/timer.h"
	27	#include "wx/dcmemory.h"
	28	#endif
	29
	30	#include "wx/html/forcelnk.h"
	31	#include "wx/html/m_templ.h"
	32	#include "wx/html/htmlwin.h"
	33
	34	#include "wx/image.h"
	35	#include "wx/gifdecod.h"
	36	#include "wx/dynarray.h"
	37
	38	#include <math.h>
	39	#include <float.h>
	40
	41	FORCE_LINK_ME(m_image)
	42
	43
	44
	45
	46	WX_DECLARE_OBJARRAY(int, CoordArray);
	47	#include "wx/arrimpl.cpp" // this is a magic incantation which must be done!
	48	WX_DEFINE_OBJARRAY(CoordArray);
	49
	50
	51	//--------------------------------------------------------------------------------
	52	// wxHtmlImageMapAreaCell
	53	// 0-width, 0-height cell that represents single area in imagemap
	54	// (it's GetLink is called from wxHtmlImageCell's)
	55	//--------------------------------------------------------------------------------
	56
	57	class wxHtmlImageMapAreaCell : public wxHtmlCell
	58	{
	59	public:
	60	enum celltype { CIRCLE, RECT, POLY };
	61	protected:
	62	CoordArray coords;
	63	celltype type;
	64	int radius;
	65	public:
	66	wxHtmlImageMapAreaCell( celltype t, wxString &coords, double pixel_scale = 1.0);
	67	virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
	68	};
	69
	70
	71
	72
	73
	74	wxHtmlImageMapAreaCell::wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::celltype t, wxString &incoords, double pixel_scale )
	75	{
	76	int i;
	77	wxString x = incoords, y;
	78
	79	type = t;
	80	while ((i = x.Find( ',' )) != -1)
	81	{
	82	coords.Add( (int)(pixel_scale * (double)wxAtoi( x.Left( i ).c_str())) );
	83	x = x.Mid( i + 1 );
	84	}
	85	coords.Add( (int)(pixel_scale * (double)wxAtoi( x.c_str())) );
	86	}
	87
	88	wxHtmlLinkInfo *wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
	89	{
	90	switch (type)
	91	{
	92	case RECT:
	93	{
	94	int l, t, r, b;
	95
	96	l = coords[ 0 ];
	97	t = coords[ 1 ];
	98	r = coords[ 2 ];
	99	b = coords[ 3 ];
	100	if (x >= l && x <= r && y >= t && y <= b)
	101	{
	102	return m_Link;
	103	}
	104	break;
	105	}
	106	case CIRCLE:
	107	{
	108	int l, t, r;
	109	double d;
	110
	111	l = coords[ 0 ];
	112	t = coords[ 1 ];
	113	r = coords[ 2 ];
	114	d = sqrt( (double) (((x - l) * (x - l)) + ((y - t) * (y - t))) );
	115	if (d < (double)r)
	116	{
	117	return m_Link;
	118	}
	119	}
	120	break;
	121	case POLY:
	122	{
	123	if (coords.GetCount() >= 6)
	124	{
	125	int intersects = 0;
	126	int wherex = x;
	127	int wherey = y;
	128	int totalv = coords.GetCount() / 2;
	129	int totalc = totalv * 2;
	130	int xval = coords[totalc - 2];
	131	int yval = coords[totalc - 1];
	132	int end = totalc;
	133	int pointer = 1;
	134
	135	if ((yval >= wherey) != (coords[pointer] >= wherey))
	136	{
	137	if ((xval >= wherex) == (coords[0] >= wherex))
	138	{
	139	intersects += (xval >= wherex) ? 1 : 0;
	140	}
	141	else
	142	{
	143	intersects += ((xval - (yval - wherey) *
	144	(coords[0] - xval) /
	145	(coords[pointer] - yval)) >= wherex) ? 1 : 0;
	146	}
	147	}
	148
	149	while (pointer < end)
	150	{
	151	yval = coords[pointer];
	152	pointer += 2;
	153	if (yval >= wherey)
	154	{
	155	while ((pointer < end) && (coords[pointer] >= wherey))
	156	{
	157	pointer += 2;
	158	}
	159	if (pointer >= end)
	160	{
	161	break;
	162	}
	163	if ((coords[pointer - 3] >= wherex) ==
	164	(coords[pointer - 1] >= wherex)) {
	165	intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
	166	}
	167	else
	168	{
	169	intersects +=
	170	((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
	171	(coords[pointer - 1] - coords[pointer - 3]) /
	172	(coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
	173	}
	174	}
	175	else
	176	{
	177	while ((pointer < end) && (coords[pointer] < wherey))
	178	{
	179	pointer += 2;
	180	}
	181	if (pointer >= end)
	182	{
	183	break;
	184	}
	185	if ((coords[pointer - 3] >= wherex) ==
	186	(coords[pointer - 1] >= wherex))
	187	{
	188	intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
	189	}
	190	else
	191	{
	192	intersects +=
	193	((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
	194	(coords[pointer - 1] - coords[pointer - 3]) /
	195	(coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
	196	}
	197	}
	198	}
	199	if ((intersects & 1) != 0)
	200	{
	201	return m_Link;
	202	}
	203	}
	204	}
	205	break;
	206	}
	207
	208	if (m_Next)
	209	{
	210	wxHtmlImageMapAreaCell a = (wxHtmlImageMapAreaCell)m_Next;
	211	return a->GetLink( x, y );
	212	}
	213	return NULL;
	214	}
	215
	216
	217
	218
	219
	220
	221
	222
	223	//--------------------------------------------------------------------------------
	224	// wxHtmlImageMapCell
	225	// 0-width, 0-height cell that represents map from imagemaps
	226	// it is always placed before wxHtmlImageMapAreaCells
	227	// It responds to Find(wxHTML_COND_ISIMAGEMAP)
	228	//--------------------------------------------------------------------------------
	229
	230
	231	class wxHtmlImageMapCell : public wxHtmlCell
	232	{
	233	public:
	234	wxHtmlImageMapCell( wxString &name );
	235	protected:
	236	wxString m_Name;
	237	public:
	238	virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
	239	virtual const wxHtmlCell Find( int cond, const void param ) const;
	240	};
	241
	242
	243	wxHtmlImageMapCell::wxHtmlImageMapCell( wxString &name )
	244	{
	245	m_Name = name ;
	246	}
	247
	248	wxHtmlLinkInfo *wxHtmlImageMapCell::GetLink( int x, int y ) const
	249	{
	250	wxHtmlImageMapAreaCell a = (wxHtmlImageMapAreaCell)m_Next;
	251	if (a)
	252	return a->GetLink( x, y );
	253	return wxHtmlCell::GetLink( x, y );
	254	}
	255
	256	const wxHtmlCell wxHtmlImageMapCell::Find( int cond, const void param ) const
	257	{
	258	if (cond == wxHTML_COND_ISIMAGEMAP)
	259	{
	260	if (m_Name == ((wxString)(param)))
	261	return this;
	262	}
	263	return wxHtmlCell::Find(cond, param);
	264	}
	265
	266
	267
	268
	269
	270	//--------------------------------------------------------------------------------
	271	// wxHtmlImageCell
	272	// Image/bitmap
	273	//--------------------------------------------------------------------------------
	274
	275	class wxHtmlImageCell : public wxHtmlCell
	276	{
	277	public:
	278	wxHtmlImageCell(wxWindow *window,
	279	wxFSFile *input, int w = -1, int h = -1,
	280	double scale = 1.0, int align = wxHTML_ALIGN_BOTTOM,
	281	const wxString& mapname = wxEmptyString);
	282	~wxHtmlImageCell();
	283	void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
	284	virtual wxHtmlLinkInfo *GetLink(int x = 0, int y = 0) const;
	285
	286	void SetImage(const wxImage& img);
	287	#if wxUSE_GIF && wxUSE_TIMER
	288	void AdvanceAnimation(wxTimer *timer);
	289	virtual void Layout(int w);
	290	#endif
	291
	292	private:
	293	wxBitmap *m_bitmap;
	294	int m_bmpW, m_bmpH;
	295	wxScrolledWindow *m_window;
	296	#if wxUSE_GIF && wxUSE_TIMER
	297	wxGIFDecoder *m_gifDecoder;
	298	wxTimer *m_gifTimer;
	299	int m_physX, m_physY;
	300	#endif
	301	double m_scale;
	302	wxHtmlImageMapCell *m_imageMap;
	303	wxString m_mapName;
	304	};
	305
	306	#if wxUSE_GIF && wxUSE_TIMER
	307	class wxGIFTimer : public wxTimer
	308	{
	309	public:
	310	wxGIFTimer(wxHtmlImageCell *cell) : m_cell(cell) {}
	311	virtual void Notify()
	312	{
	313	m_cell->AdvanceAnimation(this);
	314	}
	315
	316	private:
	317	wxHtmlImageCell *m_cell;
	318	};
	319	#endif
	320
	321
	322	//--------------------------------------------------------------------------------
	323	// wxHtmlImageCell
	324	//--------------------------------------------------------------------------------
	325
	326	wxHtmlImageCell::wxHtmlImageCell(wxWindow window, wxFSFile input,
	327	int w, int h, double scale, int align,
	328	const wxString& mapname) : wxHtmlCell()
	329	{
	330	m_window = window ? wxStaticCast(window, wxScrolledWindow) : NULL;
	331	m_scale = scale;
	332	m_bitmap = NULL;
	333	m_bmpW = w;
	334	m_bmpH = h;
	335	m_imageMap = NULL;
	336	m_mapName = mapname;
	337	SetCanLiveOnPagebreak(FALSE);
	338	#if wxUSE_GIF && wxUSE_TIMER
	339	m_gifDecoder = NULL;
	340	m_gifTimer = NULL;
	341	m_physX = m_physY = -1;
	342	#endif
	343
	344	wxInputStream *s = input->GetStream();
	345
	346	if ( s )
	347	{
	348	bool readImg = TRUE;
	349
	350	#if wxUSE_GIF && wxUSE_TIMER
	351	if ( (input->GetLocation().Matches(wxT("*.gif")) \|\|
	352	input->GetLocation().Matches(wxT("*.GIF"))) && m_window )
	353	{
	354	m_gifDecoder = new wxGIFDecoder(s, TRUE);
	355	if ( m_gifDecoder->ReadGIF() == wxGIF_OK )
	356	{
	357	wxImage img;
	358	if ( m_gifDecoder->ConvertToImage(&img) )
	359	SetImage(img);
	360
	361	readImg = FALSE;
	362
	363	if ( m_gifDecoder->IsAnimation() )
	364	{
	365	m_gifTimer = new wxGIFTimer(this);
	366	m_gifTimer->Start(m_gifDecoder->GetDelay(), TRUE);
	367	}
	368	else
	369	{
	370	wxDELETE(m_gifDecoder);
	371	}
	372	}
	373	else
	374	{
	375	wxDELETE(m_gifDecoder);
	376	}
	377	}
	378
	379	if ( readImg )
	380	#endif
	381	{
	382	SetImage(wxImage(*s, wxBITMAP_TYPE_ANY));
	383	}
	384	}
	385
	386	m_Width = (int)(scale * (double)m_bmpW);
	387	m_Height = (int)(scale * (double)m_bmpH);
	388
	389	switch (align)
	390	{
	391	case wxHTML_ALIGN_TOP :
	392	m_Descent = m_Height;
	393	break;
	394	case wxHTML_ALIGN_CENTER :
	395	m_Descent = m_Height / 2;
	396	break;
	397	case wxHTML_ALIGN_BOTTOM :
	398	default :
	399	m_Descent = 0;
	400	break;
	401	}
	402	}
	403
	404	void wxHtmlImageCell::SetImage(const wxImage& img)
	405	{
	406	if ( img.Ok() )
	407	{
	408	delete m_bitmap;
	409
	410	int ww, hh;
	411	ww = img.GetWidth();
	412	hh = img.GetHeight();
	413
	414	if ( m_bmpW == -1 )
	415	m_bmpW = ww;
	416	if ( m_bmpH == -1 )
	417	m_bmpH = hh;
	418
	419	if ((m_bmpW != ww) \|\| (m_bmpH != hh))
	420	{
	421	wxImage img2 = img.Scale(m_bmpW, m_bmpH);
	422	m_bitmap = new wxBitmap(img2);
	423	}
	424	else
	425	m_bitmap = new wxBitmap(img);
	426	}
	427	}
	428
	429	#if wxUSE_GIF && wxUSE_TIMER
	430	void wxHtmlImageCell::AdvanceAnimation(wxTimer *timer)
	431	{
	432	wxImage img;
	433
	434	m_gifDecoder->GoNextFrame(TRUE);
	435
	436	if ( m_physX == -1 )
	437	{
	438	m_physX = m_physY = 0;
	439	for (wxHtmlCell *cell = this; cell; cell = cell->GetParent())
	440	{
	441	m_physX += cell->GetPosX();
	442	m_physY += cell->GetPosY();
	443	}
	444	}
	445
	446	int x, y;
	447	m_window->CalcScrolledPosition(m_physX, m_physY, &x, &y);
	448	wxRect rect(x, y, m_Width, m_Height);
	449
	450	if ( m_window->GetClientRect().Intersects(rect) &&
	451	m_gifDecoder->ConvertToImage(&img) )
	452	{
	453	if ( (int)m_gifDecoder->GetWidth() != m_Width \|\|
	454	(int)m_gifDecoder->GetHeight() != m_Height \|\|
	455	m_gifDecoder->GetLeft() != 0 \|\| m_gifDecoder->GetTop() != 0 )
	456	{
	457	wxBitmap bmp(img);
	458	wxMemoryDC dc;
	459	dc.SelectObject(*m_bitmap);
	460	dc.DrawBitmap(bmp, m_gifDecoder->GetLeft(), m_gifDecoder->GetTop());
	461	}
	462	else
	463	SetImage(img);
	464	m_window->Refresh(img.HasMask(), &rect);
	465	}
	466
	467	timer->Start(m_gifDecoder->GetDelay(), TRUE);
	468	}
	469
	470	void wxHtmlImageCell::Layout(int w)
	471	{
	472	wxHtmlCell::Layout(w);
	473	m_physX = m_physY = -1;
	474	}
	475
	476	#endif
	477
	478	wxHtmlImageCell::~wxHtmlImageCell()
	479	{
	480	delete m_bitmap;
	481	#if wxUSE_GIF && wxUSE_TIMER
	482	delete m_gifTimer;
	483	delete m_gifDecoder;
	484	#endif
	485	}
	486
	487
	488	void wxHtmlImageCell::Draw(wxDC& dc, int x, int y, int WXUNUSED(view_y1), int WXUNUSED(view_y2))
	489	{
	490	if (m_bitmap)
	491	{
	492	double us_x, us_y;
	493	dc.GetUserScale(&us_x, &us_y);
	494	dc.SetUserScale(us_x * m_scale, us_y * m_scale);
	495
	496	dc.DrawBitmap(*m_bitmap, (int) ((x + m_PosX) / m_scale),
	497	(int) ((y + m_PosY) / m_scale), TRUE);
	498	dc.SetUserScale(us_x, us_y);
	499	}
	500	}
	501
	502	wxHtmlLinkInfo *wxHtmlImageCell::GetLink( int x, int y ) const
	503	{
	504	if (m_mapName.IsEmpty())
	505	return wxHtmlCell::GetLink( x, y );
	506	if (!m_imageMap)
	507	{
	508	wxHtmlContainerCell p, op;
	509	op = p = GetParent();
	510	while (p)
	511	{
	512	op = p;
	513	p = p->GetParent();
	514	}
	515	p = op;
	516	wxHtmlCell cell = (wxHtmlCell)p->Find(wxHTML_COND_ISIMAGEMAP,
	517	(const void*)(&m_mapName));
	518	if (!cell)
	519	{
	520	((wxString&)m_mapName).Clear();
	521	return wxHtmlCell::GetLink( x, y );
	522	}
	523	{ // dirty hack, ask Joel why he fills m_ImageMap in this place
	524	// THE problem is that we're in const method and we can't modify m_ImageMap
	525	wxHtmlImageMapCell cx = (wxHtmlImageMapCell)(&m_imageMap);
	526	cx = (wxHtmlImageMapCell)cell;
	527	}
	528	}
	529	return m_imageMap->GetLink(x, y);
	530	}
	531
	532
	533
	534	//--------------------------------------------------------------------------------
	535	// tag handler
	536	//--------------------------------------------------------------------------------
	537
	538	TAG_HANDLER_BEGIN(IMG, "IMG,MAP,AREA")
	539
	540	TAG_HANDLER_PROC(tag)
	541	{
	542	if (tag.GetName() == wxT("IMG"))
	543	{
	544	if (tag.HasParam(wxT("SRC")))
	545	{
	546	int w = -1, h = -1;
	547	int al;
	548	wxFSFile *str;
	549	wxString tmp = tag.GetParam(wxT("SRC"));
	550	wxString mn = wxEmptyString;
	551
	552	if ( !m_WParser->CanOpenURL(tmp) )
	553	return FALSE;
	554
	555	str = m_WParser->GetFS()->OpenFile(tmp);
	556	if (tag.HasParam(wxT("WIDTH")))
	557	tag.GetParamAsInt(wxT("WIDTH"), &w);
	558	if (tag.HasParam(wxT("HEIGHT")))
	559	tag.GetParamAsInt(wxT("HEIGHT"), &h);
	560	al = wxHTML_ALIGN_BOTTOM;
	561	if (tag.HasParam(wxT("ALIGN")))
	562	{
	563	wxString alstr = tag.GetParam(wxT("ALIGN"));
	564	alstr.MakeUpper(); // for the case alignment was in ".."
	565	if (alstr == wxT("TEXTTOP"))
	566	al = wxHTML_ALIGN_TOP;
	567	else if ((alstr == wxT("CENTER")) \|\| (alstr == wxT("ABSCENTER")))
	568	al = wxHTML_ALIGN_CENTER;
	569	}
	570	if (tag.HasParam(wxT("USEMAP")))
	571	{
	572	mn = tag.GetParam( wxT("USEMAP") );
	573	if (mn.GetChar(0) == wxT('#'))
	574	{
	575	mn = mn.Mid( 1 );
	576	}
	577	}
	578	wxHtmlImageCell *cel = NULL;
	579	if (str)
	580	{
	581	cel = new wxHtmlImageCell(m_WParser->GetWindow(),
	582	str, w, h,
	583	m_WParser->GetPixelScale(),
	584	al, mn);
	585	cel->SetLink(m_WParser->GetLink());
	586	cel->SetId(tag.GetParam(wxT("id"))); // may be empty
	587	m_WParser->GetContainer()->InsertCell(cel);
	588	delete str;
	589	}
	590	}
	591	}
	592	if (tag.GetName() == wxT("MAP"))
	593	{
	594	m_WParser->CloseContainer();
	595	m_WParser->OpenContainer();
	596	if (tag.HasParam(wxT("NAME")))
	597	{
	598	wxString tmp = tag.GetParam(wxT("NAME"));
	599	wxHtmlImageMapCell *cel = new wxHtmlImageMapCell( tmp );
	600	m_WParser->GetContainer()->InsertCell( cel );
	601	}
	602	ParseInner( tag );
	603	m_WParser->CloseContainer();
	604	m_WParser->OpenContainer();
	605	}
	606	if (tag.GetName() == wxT("AREA"))
	607	{
	608	if (tag.HasParam(wxT("SHAPE")))
	609	{
	610	wxString tmp = tag.GetParam(wxT("SHAPE"));
	611	wxString coords = wxEmptyString;
	612	tmp.MakeUpper();
	613	wxHtmlImageMapAreaCell *cel = NULL;
	614	if (tag.HasParam(wxT("COORDS")))
	615	{
	616	coords = tag.GetParam(wxT("COORDS"));
	617	}
	618	if (tmp == wxT("POLY"))
	619	{
	620	cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::POLY, coords, m_WParser->GetPixelScale() );
	621	}
	622	else if (tmp == wxT("CIRCLE"))
	623	{
	624	cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::CIRCLE, coords, m_WParser->GetPixelScale() );
	625	}
	626	else if (tmp == wxT("RECT"))
	627	{
	628	cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::RECT, coords, m_WParser->GetPixelScale() );
	629	}
	630	if (cel != NULL && tag.HasParam(wxT("HREF")))
	631	{
	632	wxString tmp = tag.GetParam(wxT("HREF"));
	633	wxString target = wxEmptyString;
	634	if (tag.HasParam(wxT("TARGET"))) target = tag.GetParam(wxT("TARGET"));
	635	cel->SetLink( wxHtmlLinkInfo(tmp, target));
	636	}
	637	if (cel != NULL) m_WParser->GetContainer()->InsertCell( cel );
	638	}
	639	}
	640
	641	return FALSE;
	642	}
	643
	644	TAG_HANDLER_END(IMG)
	645
	646
	647
	648	TAGS_MODULE_BEGIN(Image)
	649
	650	TAGS_MODULE_ADD(IMG)
	651
	652	TAGS_MODULE_END(Image)
	653
	654
	655	#endif