2dfc97eea1
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17765 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
728 lines
22 KiB
C++
728 lines
22 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: m_image.cpp
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// Purpose: wxHtml module for displaying images
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// Author: Vaclav Slavik
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// RCS-ID: $Id$
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// Copyright: (c) 1999 Vaclav Slavik, Joel Lucsy
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// Licence: wxWindows Licence
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/////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "wx/wxprec.h"
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#include "wx/defs.h"
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#if wxUSE_HTML && wxUSE_STREAMS
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WXPRECOMP
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#include "wx/dc.h"
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#include "wx/scrolwin.h"
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#include "wx/timer.h"
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#include "wx/dcmemory.h"
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#endif
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#include "wx/html/forcelnk.h"
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#include "wx/html/m_templ.h"
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#include "wx/html/htmlwin.h"
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#include "wx/image.h"
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#include "wx/gifdecod.h"
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#include "wx/dynarray.h"
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#include "wx/log.h"
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#include <math.h>
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#include <float.h>
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FORCE_LINK_ME(m_image)
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WX_DECLARE_OBJARRAY(int, CoordArray);
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#include "wx/arrimpl.cpp" // this is a magic incantation which must be done!
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WX_DEFINE_OBJARRAY(CoordArray);
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//--------------------------------------------------------------------------------
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// wxHtmlImageMapAreaCell
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// 0-width, 0-height cell that represents single area in imagemap
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// (it's GetLink is called from wxHtmlImageCell's)
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//--------------------------------------------------------------------------------
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class wxHtmlImageMapAreaCell : public wxHtmlCell
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{
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public:
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enum celltype { CIRCLE, RECT, POLY };
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protected:
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CoordArray coords;
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celltype type;
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int radius;
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public:
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wxHtmlImageMapAreaCell( celltype t, wxString &coords, double pixel_scale = 1.0);
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virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
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};
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wxHtmlImageMapAreaCell::wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::celltype t, wxString &incoords, double pixel_scale )
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{
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int i;
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wxString x = incoords, y;
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type = t;
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while ((i = x.Find( ',' )) != -1)
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{
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coords.Add( (int)(pixel_scale * (double)wxAtoi( x.Left( i ).c_str())) );
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x = x.Mid( i + 1 );
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}
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coords.Add( (int)(pixel_scale * (double)wxAtoi( x.c_str())) );
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}
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wxHtmlLinkInfo *wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
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{
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switch (type)
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{
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case RECT:
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{
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int l, t, r, b;
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l = coords[ 0 ];
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t = coords[ 1 ];
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r = coords[ 2 ];
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b = coords[ 3 ];
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if (x >= l && x <= r && y >= t && y <= b)
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{
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return m_Link;
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}
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break;
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}
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case CIRCLE:
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{
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int l, t, r;
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double d;
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l = coords[ 0 ];
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t = coords[ 1 ];
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r = coords[ 2 ];
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d = sqrt( (double) (((x - l) * (x - l)) + ((y - t) * (y - t))) );
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if (d < (double)r)
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{
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return m_Link;
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}
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}
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break;
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case POLY:
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{
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if (coords.GetCount() >= 6)
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{
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int intersects = 0;
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int wherex = x;
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int wherey = y;
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int totalv = coords.GetCount() / 2;
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int totalc = totalv * 2;
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int xval = coords[totalc - 2];
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int yval = coords[totalc - 1];
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int end = totalc;
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int pointer = 1;
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if ((yval >= wherey) != (coords[pointer] >= wherey))
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{
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if ((xval >= wherex) == (coords[0] >= wherex))
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{
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intersects += (xval >= wherex) ? 1 : 0;
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}
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else
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{
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intersects += ((xval - (yval - wherey) *
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(coords[0] - xval) /
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(coords[pointer] - yval)) >= wherex) ? 1 : 0;
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}
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}
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while (pointer < end)
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{
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yval = coords[pointer];
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pointer += 2;
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if (yval >= wherey)
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{
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while ((pointer < end) && (coords[pointer] >= wherey))
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{
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pointer += 2;
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}
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if (pointer >= end)
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{
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break;
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}
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if ((coords[pointer - 3] >= wherex) ==
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(coords[pointer - 1] >= wherex)) {
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intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
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}
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else
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{
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intersects +=
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((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
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(coords[pointer - 1] - coords[pointer - 3]) /
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(coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
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}
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}
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else
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{
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while ((pointer < end) && (coords[pointer] < wherey))
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{
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pointer += 2;
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}
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if (pointer >= end)
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{
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break;
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}
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if ((coords[pointer - 3] >= wherex) ==
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(coords[pointer - 1] >= wherex))
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{
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intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
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}
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else
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{
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intersects +=
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((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
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(coords[pointer - 1] - coords[pointer - 3]) /
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(coords[pointer] - coords[pointer - 2])) >= wherex) ? 1 : 0;
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}
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}
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}
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if ((intersects & 1) != 0)
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{
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return m_Link;
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}
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}
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}
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break;
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}
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if (m_Next)
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{
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wxHtmlImageMapAreaCell *a = (wxHtmlImageMapAreaCell*)m_Next;
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return a->GetLink( x, y );
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}
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return NULL;
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}
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//--------------------------------------------------------------------------------
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// wxHtmlImageMapCell
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// 0-width, 0-height cell that represents map from imagemaps
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// it is always placed before wxHtmlImageMapAreaCells
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// It responds to Find(wxHTML_COND_ISIMAGEMAP)
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//--------------------------------------------------------------------------------
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class wxHtmlImageMapCell : public wxHtmlCell
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{
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public:
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wxHtmlImageMapCell( wxString &name );
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protected:
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wxString m_Name;
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public:
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virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
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virtual const wxHtmlCell *Find( int cond, const void *param ) const;
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};
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wxHtmlImageMapCell::wxHtmlImageMapCell( wxString &name )
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{
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m_Name = name ;
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}
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wxHtmlLinkInfo *wxHtmlImageMapCell::GetLink( int x, int y ) const
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{
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wxHtmlImageMapAreaCell *a = (wxHtmlImageMapAreaCell*)m_Next;
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if (a)
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return a->GetLink( x, y );
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return wxHtmlCell::GetLink( x, y );
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}
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const wxHtmlCell *wxHtmlImageMapCell::Find( int cond, const void *param ) const
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{
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if (cond == wxHTML_COND_ISIMAGEMAP)
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{
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if (m_Name == *((wxString*)(param)))
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return this;
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}
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return wxHtmlCell::Find(cond, param);
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}
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//--------------------------------------------------------------------------------
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// wxHtmlImageCell
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// Image/bitmap
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//--------------------------------------------------------------------------------
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class wxHtmlImageCell : public wxHtmlCell
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{
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public:
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wxHtmlImageCell(wxWindow *window,
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wxFSFile *input, int w = -1, int h = -1,
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double scale = 1.0, int align = wxHTML_ALIGN_BOTTOM,
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const wxString& mapname = wxEmptyString);
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~wxHtmlImageCell();
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void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
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virtual wxHtmlLinkInfo *GetLink(int x = 0, int y = 0) const;
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void SetImage(const wxImage& img);
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#if wxUSE_GIF && wxUSE_TIMER
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void AdvanceAnimation(wxTimer *timer);
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virtual void Layout(int w);
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#endif
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private:
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wxBitmap *m_bitmap;
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int m_bmpW, m_bmpH;
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bool m_showFrame:1;
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wxScrolledWindow *m_window;
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#if wxUSE_GIF && wxUSE_TIMER
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wxGIFDecoder *m_gifDecoder;
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wxTimer *m_gifTimer;
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int m_physX, m_physY;
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#endif
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double m_scale;
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wxHtmlImageMapCell *m_imageMap;
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wxString m_mapName;
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};
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#if wxUSE_GIF && wxUSE_TIMER
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class wxGIFTimer : public wxTimer
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{
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public:
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wxGIFTimer(wxHtmlImageCell *cell) : m_cell(cell) {}
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virtual void Notify()
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{
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m_cell->AdvanceAnimation(this);
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}
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private:
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wxHtmlImageCell *m_cell;
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};
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#endif
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//--------------------------------------------------------------------------------
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// wxHtmlImageCell
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//--------------------------------------------------------------------------------
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/* XPM */
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static const char * broken_image_xpm[] = {
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"29 31 7 1",
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" c None",
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". c #808080",
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"+ c #FFFFFF",
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"@ c #C0C0C0",
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"# c #000000",
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"$ c #333366",
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"% c #B2B2B2",
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"..................... ",
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".+++++++++++++++++++.. ",
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".+++++++++++++++++++.@. ",
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".++@@@@@@@@@@@@@@@@@.+@. ",
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".++@@@@@@@@@@@@@@@@@.++@. ",
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".++@@@@@.@@@@.@@@@@@.+++@. ",
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".++@@@@@@@@@@@@@@@@@.++++@. ",
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".++@@@@@@@@@@@@@@@@@.+++++@. ",
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".++@@.@@@@@@@@@@.@@@######## ",
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".++@@@@@@@@@@@@@@@@@@$$$$$$#.",
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".######@@@@@@@@@@@@@@@.....#.",
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" ###@@@@@@@@@@@@@@@++#.",
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" #####@@@@@@@@@@++#.",
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" #@.@@@@@@@@++#.",
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".. ###@@@@@@@++#.",
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".+.... #@@@@@@++#.",
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".++@@@... ####@@++#.",
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".++@@@@@@.. #####.",
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".++@@@@@@@@... ",
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".++@@@@@@%%%%@. ",
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".++@@@@@@%%%%@@.... ",
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".++@@@@@@%%%%@@@@@@.... ",
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".++@@@@@@%%%%@@@@@@@@@@.... ",
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".++@@@@@@@@@@@@@@@@@@@@@@++#.",
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".++@@@@@@@@@@@@@@@@@@@@@@++#.",
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".++@@@@@@@@@@@@@@@@@@@@@@++#.",
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".++@@@@@@@@@@@@@@@@@@@@@@++#.",
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".++@@@@@@@@@@@@@@@@@@@@@@++#.",
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".++++++++++++++++++++++++++#.",
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".++++++++++++++++++++++++++#.",
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"############################."};
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wxHtmlImageCell::wxHtmlImageCell(wxWindow *window, wxFSFile *input,
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int w, int h, double scale, int align,
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const wxString& mapname) : wxHtmlCell()
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{
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m_window = window ? wxStaticCast(window, wxScrolledWindow) : NULL;
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m_scale = scale;
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m_showFrame = FALSE;
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m_bitmap = NULL;
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m_bmpW = w;
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m_bmpH = h;
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m_imageMap = NULL;
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m_mapName = mapname;
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SetCanLiveOnPagebreak(FALSE);
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#if wxUSE_GIF && wxUSE_TIMER
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m_gifDecoder = NULL;
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m_gifTimer = NULL;
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m_physX = m_physY = -1;
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#endif
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if ( m_bmpW && m_bmpH )
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{
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if ( input )
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{
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wxInputStream *s = input->GetStream();
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if ( s )
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{
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bool readImg = TRUE;
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#if wxUSE_GIF && wxUSE_TIMER
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if ( (input->GetLocation().Matches(wxT("*.gif")) ||
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input->GetLocation().Matches(wxT("*.GIF"))) && m_window )
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{
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m_gifDecoder = new wxGIFDecoder(s, TRUE);
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if ( m_gifDecoder->ReadGIF() == wxGIF_OK )
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{
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wxImage img;
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if ( m_gifDecoder->ConvertToImage(&img) )
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SetImage(img);
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readImg = FALSE;
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if ( m_gifDecoder->IsAnimation() )
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{
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m_gifTimer = new wxGIFTimer(this);
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m_gifTimer->Start(m_gifDecoder->GetDelay(), TRUE);
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}
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else
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{
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wxDELETE(m_gifDecoder);
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}
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}
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else
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{
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wxDELETE(m_gifDecoder);
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}
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}
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if ( readImg )
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#endif // wxUSE_GIF && wxUSE_TIMER
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{
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wxImage image(*s, wxBITMAP_TYPE_ANY);
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if ( image.Ok() )
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SetImage(image);
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}
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}
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}
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else // input==NULL, use "broken image" bitmap
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{
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if ( m_bmpW == -1 && m_bmpH == -1 )
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{
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m_bmpW = 29;
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m_bmpH = 31;
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}
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else
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{
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m_showFrame = TRUE;
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if ( m_bmpW == -1 ) m_bmpW = 31;
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if ( m_bmpH == -1 ) m_bmpH = 33;
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}
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m_bitmap = new wxBitmap(broken_image_xpm);
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}
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}
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//else: ignore the 0-sized images used sometimes on the Web pages
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m_Width = (int)(scale * (double)m_bmpW);
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m_Height = (int)(scale * (double)m_bmpH);
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switch (align)
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{
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case wxHTML_ALIGN_TOP :
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m_Descent = m_Height;
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break;
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case wxHTML_ALIGN_CENTER :
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m_Descent = m_Height / 2;
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break;
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case wxHTML_ALIGN_BOTTOM :
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default :
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m_Descent = 0;
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break;
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}
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}
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void wxHtmlImageCell::SetImage(const wxImage& img)
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{
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if ( img.Ok() )
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{
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delete m_bitmap;
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int ww, hh;
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ww = img.GetWidth();
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hh = img.GetHeight();
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if ( m_bmpW == -1 )
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m_bmpW = ww;
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if ( m_bmpH == -1 )
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m_bmpH = hh;
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if ((m_bmpW != ww) || (m_bmpH != hh))
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{
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wxImage img2 = img.Scale(m_bmpW, m_bmpH);
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m_bitmap = new wxBitmap(img2);
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}
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else
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m_bitmap = new wxBitmap(img);
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}
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}
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#if wxUSE_GIF && wxUSE_TIMER
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void wxHtmlImageCell::AdvanceAnimation(wxTimer *timer)
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{
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wxImage img;
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m_gifDecoder->GoNextFrame(TRUE);
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if ( m_physX == -1 )
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{
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m_physX = m_physY = 0;
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for (wxHtmlCell *cell = this; cell; cell = cell->GetParent())
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{
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m_physX += cell->GetPosX();
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m_physY += cell->GetPosY();
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}
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}
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int x, y;
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m_window->CalcScrolledPosition(m_physX, m_physY, &x, &y);
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wxRect rect(x, y, m_Width, m_Height);
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if ( m_window->GetClientRect().Intersects(rect) &&
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m_gifDecoder->ConvertToImage(&img) )
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{
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if ( (int)m_gifDecoder->GetWidth() != m_Width ||
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(int)m_gifDecoder->GetHeight() != m_Height ||
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m_gifDecoder->GetLeft() != 0 || m_gifDecoder->GetTop() != 0 )
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{
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wxBitmap bmp(img);
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wxMemoryDC dc;
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dc.SelectObject(*m_bitmap);
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dc.DrawBitmap(bmp, m_gifDecoder->GetLeft(), m_gifDecoder->GetTop());
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}
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else
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SetImage(img);
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m_window->Refresh(img.HasMask(), &rect);
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}
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timer->Start(m_gifDecoder->GetDelay(), TRUE);
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}
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void wxHtmlImageCell::Layout(int w)
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{
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wxHtmlCell::Layout(w);
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m_physX = m_physY = -1;
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}
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#endif
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wxHtmlImageCell::~wxHtmlImageCell()
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{
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delete m_bitmap;
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#if wxUSE_GIF && wxUSE_TIMER
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delete m_gifTimer;
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delete m_gifDecoder;
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#endif
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}
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void wxHtmlImageCell::Draw(wxDC& dc, int x, int y, int WXUNUSED(view_y1), int WXUNUSED(view_y2))
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{
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|
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
|