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 "wx/log.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;
    bool                m_showFrame:1;
    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
//--------------------------------------------------------------------------------

/* XPM */
static const char * broken_image_xpm[] = {
"29 31 7 1",
"   c None",
".  c #808080",
"+  c #FFFFFF",
"@  c #C0C0C0",
"#  c #000000",
"$  c #333366",
"%  c #B2B2B2",
".....................        ",
".+++++++++++++++++++..       ",
".+++++++++++++++++++.@.      ",
".++@@@@@@@@@@@@@@@@@.+@.     ",
".++@@@@@@@@@@@@@@@@@.++@.    ",
".++@@@@@.@@@@.@@@@@@.+++@.   ",
".++@@@@@@@@@@@@@@@@@.++++@.  ",
".++@@@@@@@@@@@@@@@@@.+++++@. ",
".++@@.@@@@@@@@@@.@@@######## ",
".++@@@@@@@@@@@@@@@@@@$$$$$$#.",
".######@@@@@@@@@@@@@@@.....#.",
"       ###@@@@@@@@@@@@@@@++#.",
"          #####@@@@@@@@@@++#.",
"              #@.@@@@@@@@++#.",
"..             ###@@@@@@@++#.",
".+....            #@@@@@@++#.",
".++@@@...          ####@@++#.",
".++@@@@@@..            #####.",
".++@@@@@@@@...               ",
".++@@@@@@%%%%@.              ",
".++@@@@@@%%%%@@....          ",
".++@@@@@@%%%%@@@@@@....      ",
".++@@@@@@%%%%@@@@@@@@@@....  ",
".++@@@@@@@@@@@@@@@@@@@@@@++#.",
".++@@@@@@@@@@@@@@@@@@@@@@++#.",
".++@@@@@@@@@@@@@@@@@@@@@@++#.",
".++@@@@@@@@@@@@@@@@@@@@@@++#.",
".++@@@@@@@@@@@@@@@@@@@@@@++#.",
".++++++++++++++++++++++++++#.",
".++++++++++++++++++++++++++#.",
"############################."};

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_showFrame = FALSE;
    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

    if ( m_bmpW && m_bmpH )
    {
        if ( input )
        {
            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 // wxUSE_GIF && wxUSE_TIMER
                {
                    wxImage image(*s, wxBITMAP_TYPE_ANY);
                    if ( image.Ok() )
                        SetImage(image);
                }
            }
        }
        else // input==NULL, use "broken image" bitmap
        {
            if ( m_bmpW == -1 && m_bmpH == -1 )
            {
                m_bmpW = 29;
                m_bmpH = 31;
            }
            else
            {
                m_showFrame = TRUE;
                if ( m_bmpW == -1 ) m_bmpW = 31;
                if ( m_bmpH == -1 ) m_bmpH = 33;
            }
            m_bitmap = new wxBitmap(broken_image_xpm);
        }
    }
    //else: ignore the 0-sized images used sometimes on the Web pages

    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_showFrame )
    {
        dc.SetBrush(*wxTRANSPARENT_BRUSH);
        dc.SetPen(*wxBLACK_PEN);
        dc.DrawRectangle(x + m_PosX, y + m_PosY, m_Width, m_Height);
        x++, y++;
    }
    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->OpenURL(wxHTML_URL_IMAGE, 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 = 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);
                if (str)
                    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	#include "wx/log.h"
	38
	39	#include <math.h>
	40	#include <float.h>
	41
	42	FORCE_LINK_ME(m_image)
	43
	44
	45
	46
	47	WX_DECLARE_OBJARRAY(int, CoordArray);
	48	#include "wx/arrimpl.cpp" // this is a magic incantation which must be done!
	49	WX_DEFINE_OBJARRAY(CoordArray);
	50
	51
	52	//--------------------------------------------------------------------------------
	53	// wxHtmlImageMapAreaCell
	54	// 0-width, 0-height cell that represents single area in imagemap
	55	// (it's GetLink is called from wxHtmlImageCell's)
	56	//--------------------------------------------------------------------------------
	57
	58	class wxHtmlImageMapAreaCell : public wxHtmlCell
	59	{
	60	public:
	61	enum celltype { CIRCLE, RECT, POLY };
	62	protected:
	63	CoordArray coords;
	64	celltype type;
	65	int radius;
	66	public:
	67	wxHtmlImageMapAreaCell( celltype t, wxString &coords, double pixel_scale = 1.0);
	68	virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
	69	};
	70
	71
	72
	73
	74
	75	wxHtmlImageMapAreaCell::wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::celltype t, wxString &incoords, double pixel_scale )
	76	{
	77	int i;
	78	wxString x = incoords, y;
	79
	80	type = t;
	81	while ((i = x.Find( ',' )) != -1)
	82	{
	83	coords.Add( (int)(pixel_scale * (double)wxAtoi( x.Left( i ).c_str())) );
	84	x = x.Mid( i + 1 );
	85	}
	86	coords.Add( (int)(pixel_scale * (double)wxAtoi( x.c_str())) );
	87	}
	88
	89	wxHtmlLinkInfo *wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
	90	{
	91	switch (type)
	92	{
	93	case RECT:
	94	{
	95	int l, t, r, b;
	96
	97	l = coords[ 0 ];
	98	t = coords[ 1 ];
	99	r = coords[ 2 ];
	100	b = coords[ 3 ];
	101	if (x >= l && x <= r && y >= t && y <= b)
	102	{
	103	return m_Link;
	104	}
	105	break;
	106	}
	107	case CIRCLE:
	108	{
	109	int l, t, r;
	110	double d;
	111
	112	l = coords[ 0 ];
	113	t = coords[ 1 ];
	114	r = coords[ 2 ];
	115	d = sqrt( (double) (((x - l) * (x - l)) + ((y - t) * (y - t))) );
	116	if (d < (double)r)
	117	{
	118	return m_Link;
	119	}
	120	}
	121	break;
	122	case POLY:
	123	{
	124	if (coords.GetCount() >= 6)
	125	{
	126	int intersects = 0;
	127	int wherex = x;
	128	int wherey = y;
	129	int totalv = coords.GetCount() / 2;
	130	int totalc = totalv * 2;
	131	int xval = coords[totalc - 2];
	132	int yval = coords[totalc - 1];
	133	int end = totalc;
	134	int pointer = 1;
	135
	136	if ((yval >= wherey) != (coords[pointer] >= wherey))
	137	{
	138	if ((xval >= wherex) == (coords[0] >= wherex))
	139	{
	140	intersects += (xval >= wherex) ? 1 : 0;
	141	}
	142	else
	143	{
	144	intersects += ((xval - (yval - wherey) *
	145	(coords[0] - xval) /
	146	(coords[pointer] - yval)) >= wherex) ? 1 : 0;
	147	}
	148	}
	149
	150	while (pointer < end)
	151	{
	152	yval = coords[pointer];
	153	pointer += 2;
	154	if (yval >= wherey)
	155	{
	156	while ((pointer < end) && (coords[pointer] >= wherey))
	157	{
	158	pointer += 2;
	159	}
	160	if (pointer >= end)
	161	{
	162	break;
	163	}
	164	if ((coords[pointer - 3] >= wherex) ==
	165	(coords[pointer - 1] >= wherex)) {
	166	intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
	167	}
	168	else
	169	{
	170	intersects +=
	171	((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
	172	(coords[pointer - 1] - coords[pointer - 3]) /
	173	(coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
	174	}
	175	}
	176	else
	177	{
	178	while ((pointer < end) && (coords[pointer] < wherey))
	179	{
	180	pointer += 2;
	181	}
	182	if (pointer >= end)
	183	{
	184	break;
	185	}
	186	if ((coords[pointer - 3] >= wherex) ==
	187	(coords[pointer - 1] >= wherex))
	188	{
	189	intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
	190	}
	191	else
	192	{
	193	intersects +=
	194	((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
	195	(coords[pointer - 1] - coords[pointer - 3]) /
	196	(coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
	197	}
	198	}
	199	}
	200	if ((intersects & 1) != 0)
	201	{
	202	return m_Link;
	203	}
	204	}
	205	}
	206	break;
	207	}
	208
	209	if (m_Next)
	210	{
	211	wxHtmlImageMapAreaCell a = (wxHtmlImageMapAreaCell)m_Next;
	212	return a->GetLink( x, y );
	213	}
	214	return NULL;
	215	}
	216
	217
	218
	219
	220
	221
	222
	223
	224	//--------------------------------------------------------------------------------
	225	// wxHtmlImageMapCell
	226	// 0-width, 0-height cell that represents map from imagemaps
	227	// it is always placed before wxHtmlImageMapAreaCells
	228	// It responds to Find(wxHTML_COND_ISIMAGEMAP)
	229	//--------------------------------------------------------------------------------
	230
	231
	232	class wxHtmlImageMapCell : public wxHtmlCell
	233	{
	234	public:
	235	wxHtmlImageMapCell( wxString &name );
	236	protected:
	237	wxString m_Name;
	238	public:
	239	virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
	240	virtual const wxHtmlCell Find( int cond, const void param ) const;
	241	};
	242
	243
	244	wxHtmlImageMapCell::wxHtmlImageMapCell( wxString &name )
	245	{
	246	m_Name = name ;
	247	}
	248
	249	wxHtmlLinkInfo *wxHtmlImageMapCell::GetLink( int x, int y ) const
	250	{
	251	wxHtmlImageMapAreaCell a = (wxHtmlImageMapAreaCell)m_Next;
	252	if (a)
	253	return a->GetLink( x, y );
	254	return wxHtmlCell::GetLink( x, y );
	255	}
	256
	257	const wxHtmlCell wxHtmlImageMapCell::Find( int cond, const void param ) const
	258	{
	259	if (cond == wxHTML_COND_ISIMAGEMAP)
	260	{
	261	if (m_Name == ((wxString)(param)))
	262	return this;
	263	}
	264	return wxHtmlCell::Find(cond, param);
	265	}
	266
	267
	268
	269
	270
	271	//--------------------------------------------------------------------------------
	272	// wxHtmlImageCell
	273	// Image/bitmap
	274	//--------------------------------------------------------------------------------
	275
	276	class wxHtmlImageCell : public wxHtmlCell
	277	{
	278	public:
	279	wxHtmlImageCell(wxWindow *window,
	280	wxFSFile *input, int w = -1, int h = -1,
	281	double scale = 1.0, int align = wxHTML_ALIGN_BOTTOM,
	282	const wxString& mapname = wxEmptyString);
	283	~wxHtmlImageCell();
	284	void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
	285	virtual wxHtmlLinkInfo *GetLink(int x = 0, int y = 0) const;
	286
	287	void SetImage(const wxImage& img);
	288	#if wxUSE_GIF && wxUSE_TIMER
	289	void AdvanceAnimation(wxTimer *timer);
	290	virtual void Layout(int w);
	291	#endif
	292
	293	private:
	294	wxBitmap *m_bitmap;
	295	int m_bmpW, m_bmpH;
	296	bool m_showFrame:1;
	297	wxScrolledWindow *m_window;
	298	#if wxUSE_GIF && wxUSE_TIMER
	299	wxGIFDecoder *m_gifDecoder;
	300	wxTimer *m_gifTimer;
	301	int m_physX, m_physY;
	302	#endif
	303	double m_scale;
	304	wxHtmlImageMapCell *m_imageMap;
	305	wxString m_mapName;
	306	};
	307
	308	#if wxUSE_GIF && wxUSE_TIMER
	309	class wxGIFTimer : public wxTimer
	310	{
	311	public:
	312	wxGIFTimer(wxHtmlImageCell *cell) : m_cell(cell) {}
	313	virtual void Notify()
	314	{
	315	m_cell->AdvanceAnimation(this);
	316	}
	317
	318	private:
	319	wxHtmlImageCell *m_cell;
	320	};
	321	#endif
	322
	323
	324	//--------------------------------------------------------------------------------
	325	// wxHtmlImageCell
	326	//--------------------------------------------------------------------------------
	327
	328	/* XPM */
	329	static const char * broken_image_xpm[] = {
	330	"29 31 7 1",
	331	" c None",
	332	". c #808080",
	333	"+ c #FFFFFF",
	334	"@ c #C0C0C0",
	335	"# c #000000",
	336	"$ c #333366",
	337	"% c #B2B2B2",
	338	"..................... ",
	339	".+++++++++++++++++++.. ",
	340	".+++++++++++++++++++.@. ",
	341	".++@@@@@@@@@@@@@@@@@.+@. ",
	342	".++@@@@@@@@@@@@@@@@@.++@. ",
	343	".++@@@@@.@@@@.@@@@@@.+++@. ",
	344	".++@@@@@@@@@@@@@@@@@.++++@. ",
	345	".++@@@@@@@@@@@@@@@@@.+++++@. ",
	346	".++@@.@@@@@@@@@@.@@@######## ",
	347	".++@@@@@@@@@@@@@@@@@@$$$$$$#.",
	348	".######@@@@@@@@@@@@@@@.....#.",
	349	" ###@@@@@@@@@@@@@@@++#.",
	350	" #####@@@@@@@@@@++#.",
	351	" #@.@@@@@@@@++#.",
	352	".. ###@@@@@@@++#.",
	353	".+.... #@@@@@@++#.",
	354	".++@@@... ####@@++#.",
	355	".++@@@@@@.. #####.",
	356	".++@@@@@@@@... ",
	357	".++@@@@@@%%%%@. ",
	358	".++@@@@@@%%%%@@.... ",
	359	".++@@@@@@%%%%@@@@@@.... ",
	360	".++@@@@@@%%%%@@@@@@@@@@.... ",
	361	".++@@@@@@@@@@@@@@@@@@@@@@++#.",
	362	".++@@@@@@@@@@@@@@@@@@@@@@++#.",
	363	".++@@@@@@@@@@@@@@@@@@@@@@++#.",
	364	".++@@@@@@@@@@@@@@@@@@@@@@++#.",
	365	".++@@@@@@@@@@@@@@@@@@@@@@++#.",
	366	".++++++++++++++++++++++++++#.",
	367	".++++++++++++++++++++++++++#.",
	368	"############################."};
	369
	370	wxHtmlImageCell::wxHtmlImageCell(wxWindow window, wxFSFile input,
	371	int w, int h, double scale, int align,
	372	const wxString& mapname) : wxHtmlCell()
	373	{
	374	m_window = window ? wxStaticCast(window, wxScrolledWindow) : NULL;
	375	m_scale = scale;
	376	m_showFrame = FALSE;
	377	m_bitmap = NULL;
	378	m_bmpW = w;
	379	m_bmpH = h;
	380	m_imageMap = NULL;
	381	m_mapName = mapname;
	382	SetCanLiveOnPagebreak(FALSE);
	383	#if wxUSE_GIF && wxUSE_TIMER
	384	m_gifDecoder = NULL;
	385	m_gifTimer = NULL;
	386	m_physX = m_physY = -1;
	387	#endif
	388
	389	if ( m_bmpW && m_bmpH )
	390	{
	391	if ( input )
	392	{
	393	wxInputStream *s = input->GetStream();
	394
	395	if ( s )
	396	{
	397	bool readImg = TRUE;
	398
	399	#if wxUSE_GIF && wxUSE_TIMER
	400	if ( (input->GetLocation().Matches(wxT("*.gif")) \|\|
	401	input->GetLocation().Matches(wxT("*.GIF"))) && m_window )
	402	{
	403	m_gifDecoder = new wxGIFDecoder(s, TRUE);
	404	if ( m_gifDecoder->ReadGIF() == wxGIF_OK )
	405	{
	406	wxImage img;
	407	if ( m_gifDecoder->ConvertToImage(&img) )
	408	SetImage(img);
	409
	410	readImg = FALSE;
	411
	412	if ( m_gifDecoder->IsAnimation() )
	413	{
	414	m_gifTimer = new wxGIFTimer(this);
	415	m_gifTimer->Start(m_gifDecoder->GetDelay(), TRUE);
	416	}
	417	else
	418	{
	419	wxDELETE(m_gifDecoder);
	420	}
	421	}
	422	else
	423	{
	424	wxDELETE(m_gifDecoder);
	425	}
	426	}
	427
	428	if ( readImg )
	429	#endif // wxUSE_GIF && wxUSE_TIMER
	430	{
	431	wxImage image(*s, wxBITMAP_TYPE_ANY);
	432	if ( image.Ok() )
	433	SetImage(image);
	434	}
	435	}
	436	}
	437	else // input==NULL, use "broken image" bitmap
	438	{
	439	if ( m_bmpW == -1 && m_bmpH == -1 )
	440	{
	441	m_bmpW = 29;
	442	m_bmpH = 31;
	443	}
	444	else
	445	{
	446	m_showFrame = TRUE;
	447	if ( m_bmpW == -1 ) m_bmpW = 31;
	448	if ( m_bmpH == -1 ) m_bmpH = 33;
	449	}
	450	m_bitmap = new wxBitmap(broken_image_xpm);
	451	}
	452	}
	453	//else: ignore the 0-sized images used sometimes on the Web pages
	454
	455	m_Width = (int)(scale * (double)m_bmpW);
	456	m_Height = (int)(scale * (double)m_bmpH);
	457
	458	switch (align)
	459	{
	460	case wxHTML_ALIGN_TOP :
	461	m_Descent = m_Height;
	462	break;
	463	case wxHTML_ALIGN_CENTER :
	464	m_Descent = m_Height / 2;
	465	break;
	466	case wxHTML_ALIGN_BOTTOM :
	467	default :
	468	m_Descent = 0;
	469	break;
	470	}
	471	}
	472
	473	void wxHtmlImageCell::SetImage(const wxImage& img)
	474	{
	475	if ( img.Ok() )
	476	{
	477	delete m_bitmap;
	478
	479	int ww, hh;
	480	ww = img.GetWidth();
	481	hh = img.GetHeight();
	482
	483	if ( m_bmpW == -1 )
	484	m_bmpW = ww;
	485	if ( m_bmpH == -1 )
	486	m_bmpH = hh;
	487
	488	if ((m_bmpW != ww) \|\| (m_bmpH != hh))
	489	{
	490	wxImage img2 = img.Scale(m_bmpW, m_bmpH);
	491	m_bitmap = new wxBitmap(img2);
	492	}
	493	else
	494	m_bitmap = new wxBitmap(img);
	495	}
	496	}
	497
	498	#if wxUSE_GIF && wxUSE_TIMER
	499	void wxHtmlImageCell::AdvanceAnimation(wxTimer *timer)
	500	{
	501	wxImage img;
	502
	503	m_gifDecoder->GoNextFrame(TRUE);
	504
	505	if ( m_physX == -1 )
	506	{
	507	m_physX = m_physY = 0;
	508	for (wxHtmlCell *cell = this; cell; cell = cell->GetParent())
	509	{
	510	m_physX += cell->GetPosX();
	511	m_physY += cell->GetPosY();
	512	}
	513	}
	514
	515	int x, y;
	516	m_window->CalcScrolledPosition(m_physX, m_physY, &x, &y);
	517	wxRect rect(x, y, m_Width, m_Height);
	518
	519	if ( m_window->GetClientRect().Intersects(rect) &&
	520	m_gifDecoder->ConvertToImage(&img) )
	521	{
	522	if ( (int)m_gifDecoder->GetWidth() != m_Width \|\|
	523	(int)m_gifDecoder->GetHeight() != m_Height \|\|
	524	m_gifDecoder->GetLeft() != 0 \|\| m_gifDecoder->GetTop() != 0 )
	525	{
	526	wxBitmap bmp(img);
	527	wxMemoryDC dc;
	528	dc.SelectObject(*m_bitmap);
	529	dc.DrawBitmap(bmp, m_gifDecoder->GetLeft(), m_gifDecoder->GetTop());
	530	}
	531	else
	532	SetImage(img);
	533	m_window->Refresh(img.HasMask(), &rect);
	534	}
	535
	536	timer->Start(m_gifDecoder->GetDelay(), TRUE);
	537	}
	538
	539	void wxHtmlImageCell::Layout(int w)
	540	{
	541	wxHtmlCell::Layout(w);
	542	m_physX = m_physY = -1;
	543	}
	544
	545	#endif
	546
	547	wxHtmlImageCell::~wxHtmlImageCell()
	548	{
	549	delete m_bitmap;
	550	#if wxUSE_GIF && wxUSE_TIMER
	551	delete m_gifTimer;
	552	delete m_gifDecoder;
	553	#endif
	554	}
	555
	556
	557	void wxHtmlImageCell::Draw(wxDC& dc, int x, int y, int WXUNUSED(view_y1), int WXUNUSED(view_y2))
	558	{
	559	if ( m_showFrame )
	560	{
	561	dc.SetBrush(*wxTRANSPARENT_BRUSH);
	562	dc.SetPen(*wxBLACK_PEN);
	563	dc.DrawRectangle(x + m_PosX, y + m_PosY, m_Width, m_Height);
	564	x++, y++;
	565	}
	566	if ( m_bitmap )
	567	{
	568	double us_x, us_y;
	569	dc.GetUserScale(&us_x, &us_y);
	570	dc.SetUserScale(us_x * m_scale, us_y * m_scale);
	571
	572	dc.DrawBitmap(*m_bitmap, (int) ((x + m_PosX) / m_scale),
	573	(int) ((y + m_PosY) / m_scale), TRUE);
	574	dc.SetUserScale(us_x, us_y);
	575	}
	576	}
	577
	578	wxHtmlLinkInfo *wxHtmlImageCell::GetLink( int x, int y ) const
	579	{
	580	if (m_mapName.IsEmpty())
	581	return wxHtmlCell::GetLink( x, y );
	582	if (!m_imageMap)
	583	{
	584	wxHtmlContainerCell p, op;
	585	op = p = GetParent();
	586	while (p)
	587	{
	588	op = p;
	589	p = p->GetParent();
	590	}
	591	p = op;
	592	wxHtmlCell cell = (wxHtmlCell)p->Find(wxHTML_COND_ISIMAGEMAP,
	593	(const void*)(&m_mapName));
	594	if (!cell)
	595	{
	596	((wxString&)m_mapName).Clear();
	597	return wxHtmlCell::GetLink( x, y );
	598	}
	599	{ // dirty hack, ask Joel why he fills m_ImageMap in this place
	600	// THE problem is that we're in const method and we can't modify m_ImageMap
	601	wxHtmlImageMapCell cx = (wxHtmlImageMapCell)(&m_imageMap);
	602	cx = (wxHtmlImageMapCell)cell;
	603	}
	604	}
	605	return m_imageMap->GetLink(x, y);
	606	}
	607
	608
	609
	610	//--------------------------------------------------------------------------------
	611	// tag handler
	612	//--------------------------------------------------------------------------------
	613
	614	TAG_HANDLER_BEGIN(IMG, "IMG,MAP,AREA")
	615
	616	TAG_HANDLER_PROC(tag)
	617	{
	618	if (tag.GetName() == wxT("IMG"))
	619	{
	620	if (tag.HasParam(wxT("SRC")))
	621	{
	622	int w = -1, h = -1;
	623	int al;
	624	wxFSFile *str;
	625	wxString tmp = tag.GetParam(wxT("SRC"));
	626	wxString mn = wxEmptyString;
	627
	628	str = m_WParser->OpenURL(wxHTML_URL_IMAGE, tmp);
	629
	630	if (tag.HasParam(wxT("WIDTH")))
	631	tag.GetParamAsInt(wxT("WIDTH"), &w);
	632	if (tag.HasParam(wxT("HEIGHT")))
	633	tag.GetParamAsInt(wxT("HEIGHT"), &h);
	634	al = wxHTML_ALIGN_BOTTOM;
	635	if (tag.HasParam(wxT("ALIGN")))
	636	{
	637	wxString alstr = tag.GetParam(wxT("ALIGN"));
	638	alstr.MakeUpper(); // for the case alignment was in ".."
	639	if (alstr == wxT("TEXTTOP"))
	640	al = wxHTML_ALIGN_TOP;
	641	else if ((alstr == wxT("CENTER")) \|\| (alstr == wxT("ABSCENTER")))
	642	al = wxHTML_ALIGN_CENTER;
	643	}
	644	if (tag.HasParam(wxT("USEMAP")))
	645	{
	646	mn = tag.GetParam( wxT("USEMAP") );
	647	if (mn.GetChar(0) == wxT('#'))
	648	{
	649	mn = mn.Mid( 1 );
	650	}
	651	}
	652	wxHtmlImageCell *cel = new wxHtmlImageCell(
	653	m_WParser->GetWindow(),
	654	str, w, h,
	655	m_WParser->GetPixelScale(),
	656	al, mn);
	657	cel->SetLink(m_WParser->GetLink());
	658	cel->SetId(tag.GetParam(wxT("id"))); // may be empty
	659	m_WParser->GetContainer()->InsertCell(cel);
	660	if (str)
	661	delete str;
	662	}
	663	}
	664	if (tag.GetName() == wxT("MAP"))
	665	{
	666	m_WParser->CloseContainer();
	667	m_WParser->OpenContainer();
	668	if (tag.HasParam(wxT("NAME")))
	669	{
	670	wxString tmp = tag.GetParam(wxT("NAME"));
	671	wxHtmlImageMapCell *cel = new wxHtmlImageMapCell( tmp );
	672	m_WParser->GetContainer()->InsertCell( cel );
	673	}
	674	ParseInner( tag );
	675	m_WParser->CloseContainer();
	676	m_WParser->OpenContainer();
	677	}
	678	if (tag.GetName() == wxT("AREA"))
	679	{
	680	if (tag.HasParam(wxT("SHAPE")))
	681	{
	682	wxString tmp = tag.GetParam(wxT("SHAPE"));
	683	wxString coords = wxEmptyString;
	684	tmp.MakeUpper();
	685	wxHtmlImageMapAreaCell *cel = NULL;
	686	if (tag.HasParam(wxT("COORDS")))
	687	{
	688	coords = tag.GetParam(wxT("COORDS"));
	689	}
	690	if (tmp == wxT("POLY"))
	691	{
	692	cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::POLY, coords, m_WParser->GetPixelScale() );
	693	}
	694	else if (tmp == wxT("CIRCLE"))
	695	{
	696	cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::CIRCLE, coords, m_WParser->GetPixelScale() );
	697	}
	698	else if (tmp == wxT("RECT"))
	699	{
	700	cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::RECT, coords, m_WParser->GetPixelScale() );
	701	}
	702	if (cel != NULL && tag.HasParam(wxT("HREF")))
	703	{
	704	wxString tmp = tag.GetParam(wxT("HREF"));
	705	wxString target = wxEmptyString;
	706	if (tag.HasParam(wxT("TARGET"))) target = tag.GetParam(wxT("TARGET"));
	707	cel->SetLink( wxHtmlLinkInfo(tmp, target));
	708	}
	709	if (cel != NULL) m_WParser->GetContainer()->InsertCell( cel );
	710	}
	711	}
	712
	713	return FALSE;
	714	}
	715
	716	TAG_HANDLER_END(IMG)
	717
	718
	719
	720	TAGS_MODULE_BEGIN(Image)
	721
	722	TAGS_MODULE_ADD(IMG)
	723
	724	TAGS_MODULE_END(Image)
	725
	726
	727	#endif