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/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 = wxStaticCast(window, wxScrolledWindow);
    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;

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