efba2b89f1
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4036 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
473 lines
11 KiB
C++
473 lines
11 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: mod_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
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#ifdef __BORDLANDC__
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#pragma hdrstop
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#endif
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#ifndef WXPRECOMP
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#include "wx/wx.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/image.h"
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#include "wx/dynarray.h"
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#include <math.h>
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#include <float.h>
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FORCE_LINK_ME(mod_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 );
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virtual wxString GetLink( int x = 0, int y = 0 ) const;
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};
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wxHtmlImageMapAreaCell::wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::celltype t, wxString &incoords )
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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( atoi( x.Left( i ).c_str() ) );
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x = x.Mid( i + 1 );
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}
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coords.Add( atoi( x.c_str() ) );
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}
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wxString 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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{
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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 wxEmptyString;
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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 wxString 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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wxString 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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wxBitmap *m_Image;
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wxHtmlImageMapCell *m_ImageMap;
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wxString m_MapName;
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wxHtmlImageCell(wxFSFile *input, int w = -1, int h = -1, int align = wxHTML_ALIGN_BOTTOM, wxString mapname = wxEmptyString);
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~wxHtmlImageCell() {if (m_Image) delete m_Image;}
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void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
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virtual wxString GetLink( int x = 0, int y = 0 ) const;
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};
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//--------------------------------------------------------------------------------
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// wxHtmlImageCell
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//--------------------------------------------------------------------------------
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wxHtmlImageCell::wxHtmlImageCell(wxFSFile *input, int w, int h, int align, wxString mapname) : wxHtmlCell()
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{
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wxImage *img;
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int ww, hh;
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wxInputStream *s = input -> GetStream();
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img = new wxImage(*s, wxBITMAP_TYPE_ANY);
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m_Image = NULL;
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if (img && (img -> Ok())) {
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ww = img -> GetWidth();
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hh = img -> GetHeight();
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if (w != -1) m_Width = w; else m_Width = ww;
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if (h != -1) m_Height = h; else m_Height = hh;
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if ((m_Width != ww) || (m_Height != hh)) {
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wxImage img2 = img -> Scale(m_Width, m_Height);
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m_Image = new wxBitmap(img2.ConvertToBitmap());
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}
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else
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m_Image = new wxBitmap(img -> ConvertToBitmap());
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delete img;
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}
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switch (align) {
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case wxHTML_ALIGN_TOP :
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m_Descent = m_Height; break;
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case wxHTML_ALIGN_CENTER :
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m_Descent = m_Height / 2; break;
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case wxHTML_ALIGN_BOTTOM : default :
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m_Descent = 0; break;
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}
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m_ImageMap = NULL;
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m_MapName = mapname;
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SetCanLiveOnPagebreak(FALSE);
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}
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void wxHtmlImageCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
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{
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if (m_Image)
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dc.DrawBitmap(*m_Image, x + m_PosX, y + m_PosY, TRUE);
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wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
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}
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wxString wxHtmlImageCell::GetLink( int x, int y ) const
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{
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if (m_MapName.IsEmpty())
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return wxHtmlCell::GetLink( x, y );
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if (!m_ImageMap)
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{
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wxHtmlContainerCell *p, *op;
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op = p = GetParent();
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while (p)
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{
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op = p;
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p = p->GetParent();
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}
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p = op;
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wxHtmlCell *cell = (wxHtmlCell*)p->Find( wxHTML_COND_ISIMAGEMAP, (const void*)(&m_MapName));
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if (!cell)
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{
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((wxString&)m_MapName).Clear();
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return wxHtmlCell::GetLink( x, y );
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}
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{ // dirty hack, ask Joel why he fills m_ImageMap in this place
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// THE problem is that we're in const method and we can't modify m_ImageMap
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wxHtmlImageMapCell **cx = (wxHtmlImageMapCell**)(&m_ImageMap);
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*cx = (wxHtmlImageMapCell*)cell;
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}
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}
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return m_ImageMap->GetLink( x, y );
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}
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//--------------------------------------------------------------------------------
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// tag handler
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//--------------------------------------------------------------------------------
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TAG_HANDLER_BEGIN(IMG, "IMG, MAP, AREA")
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TAG_HANDLER_PROC(tag)
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{
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if (tag.GetName() == "IMG")
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{
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if (tag.HasParam("SRC")) {
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int w = -1, h = -1;
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int al;
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wxFSFile *str;
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wxString tmp = tag.GetParam("SRC");
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wxString mn = wxEmptyString;
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str = m_WParser -> GetFS() -> OpenFile(tmp);
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if (tag.HasParam("WIDTH")) tag.ScanParam("WIDTH", "%i", &w);
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if (tag.HasParam("HEIGHT")) tag.ScanParam("HEIGHT", "%i", &h);
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al = wxHTML_ALIGN_BOTTOM;
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if (tag.HasParam("ALIGN")) {
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wxString alstr = tag.GetParam("ALIGN");
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alstr.MakeUpper(); // for the case alignment was in ".."
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if (alstr == "TEXTTOP") al = wxHTML_ALIGN_TOP;
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else if ((alstr == "CENTER") || (alstr == "ABSCENTER")) al = wxHTML_ALIGN_CENTER;
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}
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if (tag.HasParam("USEMAP"))
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{
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mn = tag.GetParam( "USEMAP" );
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if (mn[ 0 ] == '#')
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{
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mn = mn.Mid( 1 );
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}
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}
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wxHtmlImageCell *cel = NULL;
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if (str) {
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cel = new wxHtmlImageCell(str, w, h, al, mn);
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cel -> SetLink(m_WParser -> GetLink());
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m_WParser -> GetContainer() -> InsertCell(cel);
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delete str;
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}
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}
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}
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if (tag.GetName() == "MAP")
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{
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m_WParser->CloseContainer();
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m_WParser->OpenContainer();
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if (tag.HasParam("NAME"))
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{
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wxString tmp = tag.GetParam("NAME");
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wxHtmlImageMapCell *cel = new wxHtmlImageMapCell( tmp );
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m_WParser->GetContainer()->InsertCell( cel );
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}
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ParseInner( tag );
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m_WParser->CloseContainer();
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m_WParser->OpenContainer();
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}
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if (tag.GetName() == "AREA")
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{
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if (tag.HasParam("SHAPE"))
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{
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wxString tmp = tag.GetParam("SHAPE");
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wxString coords;
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tmp.MakeUpper();
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wxHtmlImageMapAreaCell *cel = NULL;
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if (tag.HasParam("COORDS"))
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{
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coords = tag.GetParam("COORDS");
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}
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if (tmp == "POLY")
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{
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cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::POLY, coords );
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}
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else if (tmp == "CIRCLE")
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{
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cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::CIRCLE, coords );
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}
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else if (tmp == "RECT")
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{
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cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::RECT, coords );
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}
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if (cel != NULL && tag.HasParam("HREF"))
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{
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wxString tmp = tag.GetParam("HREF");
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cel->SetLink( tmp );
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}
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if (cel != NULL) m_WParser->GetContainer()->InsertCell( cel );
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}
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}
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return FALSE;
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}
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TAG_HANDLER_END(IMAGE)
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TAGS_MODULE_BEGIN(Image)
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TAGS_MODULE_ADD(IMG)
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TAGS_MODULE_END(Image)
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#endif
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