]> git.saurik.com Git - wxWidgets.git/blobdiff - src/html/m_image.cpp
corrected content vs structure calculation
[wxWidgets.git] / src / html / m_image.cpp
index c8b27e55ae56d39fecbc80db057713fd7d206529..58aaa45e230843edf0f497a9724abc95a9300f8c 100644 (file)
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        mod_image.cpp
+// Name:        m_image.cpp
 // Purpose:     wxHtml module for displaying images
 // Author:      Vaclav Slavik
 // RCS-ID:      $Id$
@@ -7,34 +7,40 @@
 // Licence:     wxWindows Licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
 #pragma implementation
 #endif
 
 #include "wx/wxprec.h"
 
 #include "wx/defs.h"
-#if wxUSE_HTML
+#if wxUSE_HTML && wxUSE_STREAMS
 
-#ifdef __BORDLANDC__
+#ifdef __BORLANDC__
 #pragma hdrstop
 #endif
 
 #ifndef WXPRECOMP
-#include "wx/wx.h"
+    #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 "wx/artprov.h"
 
 #include <math.h>
 #include <float.h>
 
-FORCE_LINK_ME(mod_image)
+FORCE_LINK_ME(m_image)
 
 
 
@@ -44,11 +50,11 @@ WX_DECLARE_OBJARRAY(int, CoordArray);
 WX_DEFINE_OBJARRAY(CoordArray);
 
 
-//--------------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
 // wxHtmlImageMapAreaCell
-//                  0-width, 0-height cell that represents single area in imagemap
-//                  (it's GetLink is called from wxHtmlImageCell's)
-//--------------------------------------------------------------------------------
+//                  0-width, 0-height cell that represents single area in
+//                  imagemap (it's GetLink is called from wxHtmlImageCell's)
+// ---------------------------------------------------------------------------
 
 class wxHtmlImageMapAreaCell : public wxHtmlCell
 {
@@ -60,7 +66,14 @@ class wxHtmlImageMapAreaCell : public wxHtmlCell
         int radius;
     public:
         wxHtmlImageMapAreaCell( celltype t, wxString &coords, double pixel_scale = 1.0);
-        virtual wxString GetLink( int x = 0, int y = 0 ) const;
+        virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
+        void Draw(wxDC& WXUNUSED(dc),
+                  int WXUNUSED(x), int WXUNUSED(y),
+                  int WXUNUSED(view_y1), int WXUNUSED(view_y2),
+                  wxHtmlRenderingInfo& WXUNUSED(info)) {}
+
+
+    DECLARE_NO_COPY_CLASS(wxHtmlImageMapAreaCell)
 };
 
 
@@ -73,16 +86,18 @@ wxHtmlImageMapAreaCell::wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::celltype
     wxString x = incoords, y;
 
     type = t;
-    while ((i = x.Find( ',' )) != -1) {
+    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())) );
 }
 
-wxString wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
+wxHtmlLinkInfo *wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
 {
-    switch (type) {
+    switch (type)
+    {
         case RECT:
             {
                 int l, t, r, b;
@@ -91,7 +106,8 @@ wxString wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
                 t = coords[ 1 ];
                 r = coords[ 2 ];
                 b = coords[ 3 ];
-                if (x >= l && x <= r && y >= t && y <= b) {
+                if (x >= l && x <= r && y >= t && y <= b)
+                {
                     return m_Link;
                 }
                 break;
@@ -105,14 +121,16 @@ wxString wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
                 t = coords[ 1 ];
                 r = coords[ 2 ];
                 d = sqrt( (double) (((x - l) * (x - l)) + ((y - t) * (y - t))) );
-                if (d < (double)r) {
+                if (d < (double)r)
+                {
                     return m_Link;
                 }
             }
             break;
         case POLY:
             {
-                if (coords.GetCount() >= 6) {
+                if (coords.GetCount() >= 6)
+                {
                     int intersects = 0;
                     int wherex = x;
                     int wherey = y;
@@ -123,46 +141,63 @@ wxString wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
                     int end = totalc;
                     int pointer = 1;
 
-                    if ((yval >= wherey) != (coords[pointer] >= wherey)) {
-                        if ((xval >= wherex) == (coords[0] >= wherex)) {
+                    if ((yval >= wherey) != (coords[pointer] >= wherey))
+                    {
+                        if ((xval >= wherex) == (coords[0] >= wherex))
+                        {
                             intersects += (xval >= wherex) ? 1 : 0;
-                        } else {
+                        }
+                        else
+                        {
                             intersects += ((xval - (yval - wherey) *
                                             (coords[0] - xval) /
                                             (coords[pointer] - yval)) >= wherex) ? 1 : 0;
                         }
                     }
 
-                    while (pointer < end) {
+                    while (pointer < end)
+                    {
                         yval = coords[pointer];
                         pointer += 2;
-                        if (yval >= wherey) {
-                            while ((pointer < end) && (coords[pointer] >= wherey)) {
+                        if (yval >= wherey)
+                        {
+                            while ((pointer < end) && (coords[pointer] >= wherey))
+                            {
                                 pointer += 2;
                             }
-                            if (pointer >= end) {
+                            if (pointer >= end)
+                            {
                                 break;
                             }
                             if ((coords[pointer - 3] >= wherex) ==
                                     (coords[pointer - 1] >= wherex)) {
                                 intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
-                            } else {
+                            }
+                            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)) {
+                        }
+                        else
+                        {
+                            while ((pointer < end) && (coords[pointer] < wherey))
+                            {
                                 pointer += 2;
                             }
-                            if (pointer >= end) {
+                            if (pointer >= end)
+                            {
                                 break;
                             }
                             if ((coords[pointer - 3] >= wherex) ==
-                                    (coords[pointer - 1] >= wherex)) {
+                                    (coords[pointer - 1] >= wherex))
+                            {
                                 intersects += (coords[pointer - 3] >= wherex) ? 1 : 0;
-                            } else {
+                            }
+                            else
+                            {
                                 intersects +=
                                     ((coords[pointer - 3] - (coords[pointer - 2] - wherey) *
                                       (coords[pointer - 1] - coords[pointer - 3]) /
@@ -170,18 +205,21 @@ wxString wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
                             }
                         }
                     }
-                    if ((intersects & 1) != 0) {
+                    if ((intersects & 1) != 0)
+                    {
                         return m_Link;
                     }
                 }
             }
             break;
     }
-    if (m_Next) {
+
+    if (m_Next)
+    {
         wxHtmlImageMapAreaCell  *a = (wxHtmlImageMapAreaCell*)m_Next;
         return a->GetLink( x, y );
     }
-    return wxEmptyString;
+    return NULL;
 }
 
 
@@ -206,8 +244,14 @@ class wxHtmlImageMapCell : public wxHtmlCell
     protected:
         wxString m_Name;
     public:
-        virtual wxString GetLink( int x = 0, int y = 0 ) const;
+        virtual wxHtmlLinkInfo *GetLink( int x = 0, int y = 0 ) const;
         virtual const wxHtmlCell *Find( int cond, const void *param ) const;
+        void Draw(wxDC& WXUNUSED(dc),
+                  int WXUNUSED(x), int WXUNUSED(y),
+                  int WXUNUSED(view_y1), int WXUNUSED(view_y2),
+                  wxHtmlRenderingInfo& WXUNUSED(info)) {}
+
+    DECLARE_NO_COPY_CLASS(wxHtmlImageMapCell)
 };
 
 
@@ -216,7 +260,7 @@ wxHtmlImageMapCell::wxHtmlImageMapCell( wxString &name )
     m_Name = name ;
 }
 
-wxString wxHtmlImageMapCell::GetLink( int x, int y ) const
+wxHtmlLinkInfo *wxHtmlImageMapCell::GetLink( int x, int y ) const
 {
     wxHtmlImageMapAreaCell  *a = (wxHtmlImageMapAreaCell*)m_Next;
     if (a)
@@ -226,7 +270,8 @@ wxString wxHtmlImageMapCell::GetLink( int x, int y ) const
 
 const wxHtmlCell *wxHtmlImageMapCell::Find( int cond, const void *param ) const
 {
-    if (cond == wxHTML_COND_ISIMAGEMAP) {
+    if (cond == wxHTML_COND_ISIMAGEMAP)
+    {
         if (m_Name == *((wxString*)(param)))
             return this;
     }
@@ -244,46 +289,153 @@ const wxHtmlCell *wxHtmlImageMapCell::Find( int cond, const void *param ) const
 
 class wxHtmlImageCell : public wxHtmlCell
 {
-    public:
-        wxBitmap *m_Image;
-        wxHtmlImageMapCell *m_ImageMap;
-        wxString m_MapName;
-
-        wxHtmlImageCell(wxFSFile *input, int w = -1, int h = -1, int align = wxHTML_ALIGN_BOTTOM, wxString mapname = wxEmptyString);
-        ~wxHtmlImageCell() {if (m_Image) delete m_Image; }
-        void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
-        virtual wxString GetLink( int x = 0, int y = 0 ) const;
+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,
+              wxHtmlRenderingInfo& info);
+    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;
+
+    DECLARE_NO_COPY_CLASS(wxHtmlImageCell)
 };
 
+#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;
 
+    DECLARE_NO_COPY_CLASS(wxGIFTimer)
+};
+#endif
 
 
-//--------------------------------------------------------------------------------
+//----------------------------------------------------------------------------
 // wxHtmlImageCell
-//--------------------------------------------------------------------------------
+//----------------------------------------------------------------------------
 
-wxHtmlImageCell::wxHtmlImageCell(wxFSFile *input, int w, int h, int align, wxString mapname) : wxHtmlCell()
+
+wxHtmlImageCell::wxHtmlImageCell(wxWindow *window, wxFSFile *input,
+                                 int w, int h, double scale, int align,
+                                 const wxString& mapname) : wxHtmlCell()
 {
-    wxImage *img;
-    int ww, hh;
-    wxInputStream *s = input -> GetStream();
-
-    img = new wxImage(*s, wxBITMAP_TYPE_ANY);
-
-    m_Image = NULL;
-    if (img && (img -> Ok())) {
-        ww = img -> GetWidth();
-        hh = img -> GetHeight();
-        if (w != -1) m_Width = w; else m_Width = ww;
-        if (h != -1) m_Height = h; else m_Height = hh;
-        if ((m_Width != ww) || (m_Height != hh)) {
-            wxImage img2 = img -> Scale(m_Width, m_Height);
-            m_Image = new wxBitmap(img2.ConvertToBitmap());
-        } else
-            m_Image = new wxBitmap(img -> ConvertToBitmap());
-        delete img;
+    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(wxArtProvider::GetBitmap(wxART_MISSING_IMAGE));
+        }
     }
-    switch (align) {
+    //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;
@@ -295,45 +447,157 @@ wxHtmlImageCell::wxHtmlImageCell(wxFSFile *input, int w, int h, int align, wxStr
             m_Descent = 0;
             break;
     }
+ }
 
-    m_ImageMap = NULL;
-    m_MapName = mapname;
-    SetCanLiveOnPagebreak(FALSE);
+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;
+
+        // Only scale the bitmap at the rendering stage,
+        // so we don't lose quality twice
+/*
+        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(),
+                          TRUE /* use mask */);
+        }
+        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
 
-void wxHtmlImageCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
+wxHtmlImageCell::~wxHtmlImageCell()
 {
-    if (m_Image)
-        dc.DrawBitmap(*m_Image, x + m_PosX, y + m_PosY, TRUE);
-    wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
+    delete m_bitmap;
+#if wxUSE_GIF && wxUSE_TIMER
+    delete m_gifTimer;
+    delete m_gifDecoder;
+#endif
 }
 
-wxString wxHtmlImageCell::GetLink( int x, int y ) const
+
+void wxHtmlImageCell::Draw(wxDC& dc, int x, int y,
+                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
+                           wxHtmlRenderingInfo& WXUNUSED(info))
 {
-    if (m_MapName.IsEmpty())
+    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 )
+    {
+        // We add in the scaling from the desired bitmap width
+        // and height, so we only do the scaling once.
+        double imageScaleX = 1.0;
+        double imageScaleY = 1.0;
+        if (m_bmpW != m_bitmap->GetWidth())
+            imageScaleX = (double) m_bmpW / (double) m_bitmap->GetWidth();
+        if (m_bmpH != m_bitmap->GetHeight())
+            imageScaleY = (double) m_bmpH / (double) m_bitmap->GetHeight();
+        
+        double us_x, us_y;
+        dc.GetUserScale(&us_x, &us_y);
+        dc.SetUserScale(us_x * m_scale * imageScaleX, us_y * m_scale * imageScaleY);
+
+        dc.DrawBitmap(*m_bitmap, (int) ((x + m_PosX) / (m_scale*imageScaleX)),
+                                 (int) ((y + m_PosY) / (m_scale*imageScaleY)), 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) {
+    if (!m_imageMap)
+    {
         wxHtmlContainerCell *p, *op;
         op = p = GetParent();
-        while (p) {
+        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();
+        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
+        {   // 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);
+            wxHtmlImageMapCell **cx = (wxHtmlImageMapCell**)(&m_imageMap);
             *cx = (wxHtmlImageMapCell*)cell;
         }
     }
-    return m_ImageMap->GetLink( x, y );
+    return m_imageMap->GetLink(x, y);
 }
 
 
@@ -343,50 +607,63 @@ wxString wxHtmlImageCell::GetLink( int x, int y ) const
 //--------------------------------------------------------------------------------
 
 TAG_HANDLER_BEGIN(IMG, "IMG,MAP,AREA")
+    TAG_HANDLER_CONSTR(IMG) { }
 
     TAG_HANDLER_PROC(tag)
     {
-        if (tag.GetName() == "IMG") {
-            if (tag.HasParam("SRC")) {
+        if (tag.GetName() == wxT("IMG"))
+        {
+            if (tag.HasParam(wxT("SRC")))
+            {
                 int w = -1, h = -1;
                 int al;
                 wxFSFile *str;
-                wxString tmp = tag.GetParam("SRC");
+                wxString tmp = tag.GetParam(wxT("SRC"));
                 wxString mn = wxEmptyString;
 
-                str = m_WParser -> GetFS() -> OpenFile(tmp);
-                if (tag.HasParam(wxT("WIDTH"))) tag.ScanParam(wxT("WIDTH"), wxT("%i"), &w);
-                if (tag.HasParam(wxT("HEIGHT"))) tag.ScanParam(wxT("HEIGHT"), wxT("%i"), &h);
+                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("ALIGN")) {
-                    wxString alstr = tag.GetParam("ALIGN");
+                if (tag.HasParam(wxT("ALIGN")))
+                {
+                    wxString alstr = tag.GetParam(wxT("ALIGN"));
                     alstr.MakeUpper();  // for the case alignment was in ".."
-                    if (alstr == "TEXTTOP") al = wxHTML_ALIGN_TOP;
-                    else if ((alstr == "CENTER") || (alstr == "ABSCENTER")) al = wxHTML_ALIGN_CENTER;
+                    if (alstr == wxT("TEXTTOP"))
+                        al = wxHTML_ALIGN_TOP;
+                    else if ((alstr == wxT("CENTER")) || (alstr == wxT("ABSCENTER")))
+                        al = wxHTML_ALIGN_CENTER;
                 }
-                if (tag.HasParam("USEMAP")) {
-                    mn = tag.GetParam( "USEMAP" );
-                    if (mn[ (unsigned int) 0 ] == '#') {
+                if (tag.HasParam(wxT("USEMAP")))
+                {
+                    mn = tag.GetParam( wxT("USEMAP") );
+                    if (mn.GetChar(0) == wxT('#'))
+                    {
                         mn = mn.Mid( 1 );
                     }
                 }
-                wxHtmlImageCell *cel = NULL;
-                if (str) {
-                    cel = new wxHtmlImageCell(str, 
-                                (int)(m_WParser -> GetPixelScale() * (double)w), 
-                                (int)(m_WParser -> GetPixelScale() * (double)h), 
-                                al, mn);
-                    cel -> SetLink(m_WParser -> GetLink());
-                    m_WParser -> GetContainer() -> InsertCell(cel);
+                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() == "MAP") {
+        if (tag.GetName() == wxT("MAP"))
+        {
             m_WParser->CloseContainer();
             m_WParser->OpenContainer();
-            if (tag.HasParam("NAME")) {
-                wxString tmp = tag.GetParam("NAME");
+            if (tag.HasParam(wxT("NAME")))
+            {
+                wxString tmp = tag.GetParam(wxT("NAME"));
                 wxHtmlImageMapCell *cel = new wxHtmlImageMapCell( tmp );
                 m_WParser->GetContainer()->InsertCell( cel );
             }
@@ -394,25 +671,36 @@ TAG_HANDLER_BEGIN(IMG, "IMG,MAP,AREA")
             m_WParser->CloseContainer();
             m_WParser->OpenContainer();
         }
-        if (tag.GetName() == "AREA") {
-            if (tag.HasParam("SHAPE")) {
-                wxString tmp = tag.GetParam("SHAPE");
+        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("COORDS")) {
-                    coords = tag.GetParam("COORDS");
+                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() );
                 }
-                if (tmp == "POLY") {
-                    cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::POLY, coords, m_WParser -> GetPixelScale() );
-                } else if (tmp == "CIRCLE") {
-                    cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::CIRCLE, coords, m_WParser -> GetPixelScale() );
-                } else if (tmp == "RECT") {
-                    cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::RECT, coords, m_WParser -> GetPixelScale() );
+                else if (tmp == wxT("RECT"))
+                {
+                    cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::RECT, coords, m_WParser->GetPixelScale() );
                 }
-                if (cel != NULL && tag.HasParam("HREF")) {
-                    wxString tmp = tag.GetParam("HREF");
-                    cel->SetLink( tmp );
+                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 );
             }