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[wxWidgets.git] / src / common / image.cpp

diff --git a/src/common/image.cpp b/src/common/image.cpp
index f57881dcb660f2bc3a2941f0a8047f453272220e..48b39581f5a6a69f1d13687d93e268061fb44db7 100644 (file)
--- a/src/common/image.cpp
+++ b/src/common/image.cpp
@@ -15,14 +15,31 @@
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #endif
 

+#include "wx/defs.h"
+
+#if wxUSE_IMAGE
+

 #include "wx/image.h"
 #include "wx/image.h"

+#include "wx/bitmap.h"

 #include "wx/debug.h"
 #include "wx/log.h"
 #include "wx/debug.h"
 #include "wx/log.h"

-#include "../png/png.h"
+#include "wx/app.h"

 #include "wx/filefn.h"
 #include "wx/filefn.h"

+#include "wx/wfstream.h"
+#include "wx/intl.h"
+#include "wx/module.h"
+
+// For memcpy
+#include <string.h>
+#include <math.h>
+
+#ifdef __SALFORDC__
+    #undef FAR
+#endif
+

 
 //-----------------------------------------------------------------------------
 // wxImage
 
 //-----------------------------------------------------------------------------
 // wxImage


@@ -30,20 +47,25 @@
 
 class wxImageRefData: public wxObjectRefData
 {
 
 class wxImageRefData: public wxObjectRefData
 {

-

 public:
 public:

-  wxImageRefData(void);
-  ~wxImageRefData(void);
-  
-  int             m_width;
-  int             m_height;
-  unsigned char  *m_data;
-  bool            m_hasMask;
-  unsigned char   m_maskRed,m_maskGreen,m_maskBlue;
-  bool            m_ok;
+    wxImageRefData();
+    ~wxImageRefData();
+
+    int             m_width;
+    int             m_height;
+    unsigned char  *m_data;
+    bool            m_hasMask;
+    unsigned char   m_maskRed,m_maskGreen,m_maskBlue;
+    bool            m_ok;
+    bool            m_static;
+#if wxUSE_PALETTE
+    wxPalette       m_palette;
+#endif // wxUSE_PALETTE
+    wxArrayString   m_optionNames;
+    wxArrayString   m_optionValues;

 };
 
 };
 

-wxImageRefData::wxImageRefData(void)
+wxImageRefData::wxImageRefData()

 {
     m_width = 0;
     m_height = 0;
 {
     m_width = 0;
     m_height = 0;


@@ -53,188 +75,1066 @@ wxImageRefData::wxImageRefData(void)
     m_maskGreen = 0;
     m_maskBlue = 0;
     m_hasMask = FALSE;
     m_maskGreen = 0;
     m_maskBlue = 0;
     m_hasMask = FALSE;

+    m_static = FALSE;
+}
+
+wxImageRefData::~wxImageRefData()
+{
+    if (m_data && !m_static)
+        free( m_data );
+}
+
+wxList wxImage::sm_handlers;
+
+wxImage wxNullImage;
+
+//-----------------------------------------------------------------------------
+
+#define M_IMGDATA ((wxImageRefData *)m_refData)
+
+IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject)
+
+wxImage::wxImage()
+{
+}
+
+wxImage::wxImage( int width, int height )
+{
+    Create( width, height );
+}
+
+wxImage::wxImage( int width, int height, unsigned char* data, bool static_data )
+{
+    Create( width, height, data, static_data );
+}
+
+wxImage::wxImage( const wxString& name, long type, int index )
+{
+    LoadFile( name, type, index );
+}
+
+wxImage::wxImage( const wxString& name, const wxString& mimetype, int index )
+{
+    LoadFile( name, mimetype, index );
+}
+
+#if wxUSE_STREAMS
+wxImage::wxImage( wxInputStream& stream, long type, int index )
+{
+    LoadFile( stream, type, index );
+}
+
+wxImage::wxImage( wxInputStream& stream, const wxString& mimetype, int index )
+{
+    LoadFile( stream, mimetype, index );
+}
+#endif // wxUSE_STREAMS
+
+wxImage::wxImage( const wxImage& image )
+{
+    Ref(image);
+}
+
+wxImage::wxImage( const wxImage* image )
+{
+    if (image) Ref(*image);
+}
+
+void wxImage::Create( int width, int height )
+{
+    UnRef();
+
+    m_refData = new wxImageRefData();
+
+    M_IMGDATA->m_data = (unsigned char *) malloc( width*height*3 );
+    if (M_IMGDATA->m_data)
+    {
+        for (int l = 0; l < width*height*3; l++) M_IMGDATA->m_data[l] = 0;
+
+        M_IMGDATA->m_width = width;
+        M_IMGDATA->m_height = height;
+        M_IMGDATA->m_ok = TRUE;
+    }
+    else
+    {
+        UnRef();
+    }
+}
+
+void wxImage::Create( int width, int height, unsigned char* data, bool static_data )
+{
+    UnRef();
+
+    m_refData = new wxImageRefData();
+
+    M_IMGDATA->m_data = data;
+    if (M_IMGDATA->m_data)
+    {
+        M_IMGDATA->m_width = width;
+        M_IMGDATA->m_height = height;
+        M_IMGDATA->m_ok = TRUE;
+        M_IMGDATA->m_static = static_data;
+    }
+    else
+    {
+        UnRef();
+    }

 }
 
 }
 

-wxImageRefData::~wxImageRefData(void)
+void wxImage::Destroy()

 {
 {

-    if (m_data) free( m_data );
+    UnRef();
+}
+
+wxImage wxImage::Copy() const
+{
+    wxImage image;
+
+    wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+
+    image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height );
+
+    char unsigned *data = image.GetData();
+
+    wxCHECK_MSG( data, image, wxT("unable to create image") );
+
+    if (M_IMGDATA->m_hasMask)
+        image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+
+    memcpy( data, GetData(), M_IMGDATA->m_width*M_IMGDATA->m_height*3 );
+
+    return image;
+}
+
+wxImage wxImage::Scale( int width, int height ) const
+{
+    wxImage image;
+
+    wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+
+    // can't scale to/from 0 size
+    wxCHECK_MSG( (width > 0) && (height > 0), image,
+                 wxT("invalid new image size") );
+
+    long old_height = M_IMGDATA->m_height,
+         old_width  = M_IMGDATA->m_width;
+    wxCHECK_MSG( (old_height > 0) && (old_width > 0), image,
+                 wxT("invalid old image size") );
+
+    image.Create( width, height );
+
+    char unsigned *data = image.GetData();
+
+    wxCHECK_MSG( data, image, wxT("unable to create image") );
+
+    if (M_IMGDATA->m_hasMask)
+    {
+        image.SetMaskColour( M_IMGDATA->m_maskRed,
+                             M_IMGDATA->m_maskGreen,
+                             M_IMGDATA->m_maskBlue );
+    }
+
+    char unsigned *source_data = M_IMGDATA->m_data;
+    char unsigned *target_data = data;
+
+#if 0
+    // This is nonsense, RR.
+
+    // We do (x, y) -> (x, y)*oldSize/newSize but the valid values of x and y
+    // are from 0 to size-1, hence all decrement the sizes
+    long old_old_width = old_width;
+    old_height--;
+    old_width--;
+    height--;
+    width--;
+    for ( long j = 0; j <= height; j++ )
+    {
+        // don't crash for images with height == 1
+        long y_offset = height ? (j * old_height / height)* old_old_width : 0;
+
+        for ( long i = 0; i <= width; i++ )
+        {
+            long x_offset = width ? (i * old_width) / width : 0;
+
+            memcpy( target_data, source_data + 3*(y_offset + x_offset), 3 );
+            target_data += 3;
+        }
+    }
+#else
+    for (long j = 0; j < height; j++)
+    {
+        long y_offset = (j * old_height / height) * old_width;
+
+        for (long i = 0; i < width; i++)
+        {
+            memcpy( target_data,
+                source_data + 3*(y_offset + ((i * old_width )/ width)),
+                3 );
+            target_data += 3;
+        }
+    }
+#endif
+
+    return image;

 }
 
 }
 

-wxList wxImage::sm_handlers;
+wxImage wxImage::Rotate90( bool clockwise ) const
+{
+    wxImage image;
+
+    wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+
+    image.Create( M_IMGDATA->m_height, M_IMGDATA->m_width );
+
+    char unsigned *data = image.GetData();
+
+    wxCHECK_MSG( data, image, wxT("unable to create image") );
+
+    if (M_IMGDATA->m_hasMask)
+        image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+
+    long height = M_IMGDATA->m_height;
+    long width  = M_IMGDATA->m_width;
+
+    char unsigned *source_data = M_IMGDATA->m_data;
+    char unsigned *target_data;
+
+    for (long j = 0; j < height; j++)
+    {
+        for (long i = 0; i < width; i++)
+        {
+            if (clockwise)
+                target_data = data + (((i+1)*height) - j - 1)*3;
+            else
+                target_data = data + ((height*(width-1)) + j - (i*height))*3;
+            memcpy( target_data, source_data, 3 );
+            source_data += 3;
+        }
+    }
+
+    return image;
+}
+
+wxImage wxImage::Mirror( bool horizontally ) const
+{
+    wxImage image;
+
+    wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+
+    image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height );
+
+    char unsigned *data = image.GetData();
+
+    wxCHECK_MSG( data, image, wxT("unable to create image") );
+
+    if (M_IMGDATA->m_hasMask)
+        image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+
+    long height = M_IMGDATA->m_height;
+    long width  = M_IMGDATA->m_width;
+
+    char unsigned *source_data = M_IMGDATA->m_data;
+    char unsigned *target_data;
+
+    if (horizontally)
+    {
+        for (long j = 0; j < height; j++)
+        {
+            data += width*3;
+            target_data = data-3;
+            for (long i = 0; i < width; i++)
+            {
+                memcpy( target_data, source_data, 3 );
+                source_data += 3;
+                target_data -= 3;
+            }
+        }
+    }
+    else
+    {
+        for (long i = 0; i < height; i++)
+        {
+            target_data = data + 3*width*(height-1-i);
+            memcpy( target_data, source_data, (size_t)3*width );
+            source_data += 3*width;
+        }
+    }
+
+    return image;
+}
+
+wxImage wxImage::GetSubImage( const wxRect &rect ) const
+{
+    wxImage image;
+
+    wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+
+    wxCHECK_MSG( (rect.GetLeft()>=0) && (rect.GetTop()>=0) && (rect.GetRight()<=GetWidth()) && (rect.GetBottom()<=GetHeight()),
+                 image, wxT("invalid subimage size") );
+
+    int subwidth=rect.GetWidth();
+    const int subheight=rect.GetHeight();
+
+    image.Create( subwidth, subheight );
+
+    char unsigned *subdata = image.GetData(), *data=GetData();
+
+    wxCHECK_MSG( subdata, image, wxT("unable to create image") );
+
+    if (M_IMGDATA->m_hasMask)
+        image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+
+    const int subleft=3*rect.GetLeft();
+    const int width=3*GetWidth();
+    subwidth*=3;
+
+    data+=rect.GetTop()*width+subleft;
+
+    for (long j = 0; j < subheight; ++j)
+    {
+        memcpy( subdata, data, subwidth);
+        subdata+=subwidth;
+        data+=width;
+    }
+
+    return image;
+}
+
+void wxImage::Paste( const wxImage &image, int x, int y )
+{
+    wxCHECK_RET( Ok(), wxT("invalid image") );
+    wxCHECK_RET( image.Ok(), wxT("invalid image") );
+
+    int xx = 0;
+    int yy = 0;
+    int width = image.GetWidth();
+    int height = image.GetHeight();
+
+    if (x < 0)
+    {
+        xx = -x;
+        width += x;
+    }
+    if (y < 0)
+    {
+        yy = -y;
+        height += y;
+    }
+
+    if ((x+xx)+width > M_IMGDATA->m_width)
+        width = M_IMGDATA->m_width - (x+xx);
+    if ((y+yy)+height > M_IMGDATA->m_height)
+        height = M_IMGDATA->m_height - (y+yy);
+
+    if (width < 1) return;
+    if (height < 1) return;
+
+    if ((!HasMask() && !image.HasMask()) ||
+       ((HasMask() && image.HasMask() &&
+         (GetMaskRed()==image.GetMaskRed()) &&
+         (GetMaskGreen()==image.GetMaskGreen()) &&
+         (GetMaskBlue()==image.GetMaskBlue()))))
+    {
+        width *= 3;
+        unsigned char* source_data = image.GetData() + xx*3 + yy*3*image.GetWidth();
+        int source_step = image.GetWidth()*3;
+
+        unsigned char* target_data = GetData() + (x+xx)*3 + (y+yy)*3*M_IMGDATA->m_width;
+        int target_step = M_IMGDATA->m_width*3;
+        for (int j = 0; j < height; j++)
+        {
+            memcpy( target_data, source_data, width );
+            source_data += source_step;
+            target_data += target_step;
+        }
+        return;
+    }
+
+    if (!HasMask() && image.HasMask())
+    {
+        unsigned char r = image.GetMaskRed();
+        unsigned char g = image.GetMaskGreen();
+        unsigned char b = image.GetMaskBlue();
+
+        width *= 3;
+        unsigned char* source_data = image.GetData() + xx*3 + yy*3*image.GetWidth();
+        int source_step = image.GetWidth()*3;
+
+        unsigned char* target_data = GetData() + (x+xx)*3 + (y+yy)*3*M_IMGDATA->m_width;
+        int target_step = M_IMGDATA->m_width*3;
+
+        for (int j = 0; j < height; j++)
+        {
+            for (int i = 0; i < width; i+=3)
+            {
+                if ((source_data[i]   != r) &&
+                    (source_data[i+1] != g) &&
+                    (source_data[i+2] != b))
+                {
+                    memcpy( target_data+i, source_data+i, 3 );
+                }
+            }
+            source_data += source_step;
+            target_data += target_step;
+        }
+    }
+}
+
+void wxImage::Replace( unsigned char r1, unsigned char g1, unsigned char b1,
+                       unsigned char r2, unsigned char g2, unsigned char b2 )
+{
+    wxCHECK_RET( Ok(), wxT("invalid image") );
+
+    char unsigned *data = GetData();
+
+    const int w = GetWidth();
+    const int h = GetHeight();
+
+    for (int j = 0; j < h; j++)
+        for (int i = 0; i < w; i++)
+        {
+            if ((data[0] == r1) && (data[1] == g1) && (data[2] == b1))
+            {
+                data[0] = r2;
+                data[1] = g2;
+                data[2] = b2;
+            }
+            data += 3;
+        }
+}
+
+wxImage wxImage::ConvertToMono( unsigned char r, unsigned char g, unsigned char b ) const
+{
+    wxImage image;
+
+    wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+
+    image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height );
+
+    char unsigned *data = image.GetData();
+
+    wxCHECK_MSG( data, image, wxT("unable to create image") );
+
+    if (M_IMGDATA->m_hasMask)
+    {
+        if (M_IMGDATA->m_maskRed == r && M_IMGDATA->m_maskGreen == g &&
+                                         M_IMGDATA->m_maskBlue == b)
+            image.SetMaskColour( 255, 255, 255 );
+        else
+            image.SetMaskColour( 0, 0, 0 );
+    }
+
+    long size = M_IMGDATA->m_height * M_IMGDATA->m_width;
+
+    char unsigned *srcd = M_IMGDATA->m_data;
+    char unsigned *tard = image.GetData();
+
+    for ( long i = 0; i < size; i++, srcd += 3, tard += 3 )
+    {
+        if (srcd[0] == r && srcd[1] == g && srcd[2] == b)
+            tard[0] = tard[1] = tard[2] = 255;
+        else
+            tard[0] = tard[1] = tard[2] = 0;
+    }
+
+    return image;
+}
+
+void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
+{
+    wxCHECK_RET( Ok(), wxT("invalid image") );
+
+    int w = M_IMGDATA->m_width;
+    int h = M_IMGDATA->m_height;
+
+    wxCHECK_RET( (x>=0) && (y>=0) && (x<w) && (y<h), wxT("invalid image index") );
+
+    long pos = (y * w + x) * 3;
+
+    M_IMGDATA->m_data[ pos   ] = r;
+    M_IMGDATA->m_data[ pos+1 ] = g;
+    M_IMGDATA->m_data[ pos+2 ] = b;
+}
+
+unsigned char wxImage::GetRed( int x, int y ) const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    int w = M_IMGDATA->m_width;
+    int h = M_IMGDATA->m_height;
+
+    wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
+
+    long pos = (y * w + x) * 3;
+
+    return M_IMGDATA->m_data[pos];
+}
+
+unsigned char wxImage::GetGreen( int x, int y ) const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    int w = M_IMGDATA->m_width;
+    int h = M_IMGDATA->m_height;
+
+    wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
+
+    long pos = (y * w + x) * 3;
+
+    return M_IMGDATA->m_data[pos+1];
+}
+
+unsigned char wxImage::GetBlue( int x, int y ) const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    int w = M_IMGDATA->m_width;
+    int h = M_IMGDATA->m_height;
+
+    wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
+
+    long pos = (y * w + x) * 3;
+
+    return M_IMGDATA->m_data[pos+2];
+}
+
+bool wxImage::Ok() const
+{
+    // image of 0 width or height can't be considered ok - at least because it
+    // causes crashes in ConvertToBitmap() if we don't catch it in time
+    wxImageRefData *data = M_IMGDATA;
+    return data && data->m_ok && data->m_width && data->m_height;
+}
+
+char unsigned *wxImage::GetData() const
+{
+    wxCHECK_MSG( Ok(), (char unsigned *)NULL, wxT("invalid image") );
+
+    return M_IMGDATA->m_data;
+}
+
+void wxImage::SetData( char unsigned *data )
+{
+    wxCHECK_RET( Ok(), wxT("invalid image") );
+
+    wxImageRefData *newRefData = new wxImageRefData();
+
+    newRefData->m_width = M_IMGDATA->m_width;
+    newRefData->m_height = M_IMGDATA->m_height;
+    newRefData->m_data = data;
+    newRefData->m_ok = TRUE;
+    newRefData->m_maskRed = M_IMGDATA->m_maskRed;
+    newRefData->m_maskGreen = M_IMGDATA->m_maskGreen;
+    newRefData->m_maskBlue = M_IMGDATA->m_maskBlue;
+    newRefData->m_hasMask = M_IMGDATA->m_hasMask;
+
+    UnRef();
+
+    m_refData = newRefData;
+}
+
+void wxImage::SetData( char unsigned *data, int new_width, int new_height )
+{
+    wxImageRefData *newRefData = new wxImageRefData();
+
+    if (m_refData)
+    {
+        newRefData->m_width = new_width;
+        newRefData->m_height = new_height;
+        newRefData->m_data = data;
+        newRefData->m_ok = TRUE;
+        newRefData->m_maskRed = M_IMGDATA->m_maskRed;
+        newRefData->m_maskGreen = M_IMGDATA->m_maskGreen;
+        newRefData->m_maskBlue = M_IMGDATA->m_maskBlue;
+        newRefData->m_hasMask = M_IMGDATA->m_hasMask;
+    }
+    else
+    {
+        newRefData->m_width = new_width;
+        newRefData->m_height = new_height;
+        newRefData->m_data = data;
+        newRefData->m_ok = TRUE;
+    }
+
+    UnRef();
+
+    m_refData = newRefData;
+}
+
+void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
+{
+    wxCHECK_RET( Ok(), wxT("invalid image") );
+
+    M_IMGDATA->m_maskRed = r;
+    M_IMGDATA->m_maskGreen = g;
+    M_IMGDATA->m_maskBlue = b;
+    M_IMGDATA->m_hasMask = TRUE;
+}
+
+unsigned char wxImage::GetMaskRed() const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    return M_IMGDATA->m_maskRed;
+}
+
+unsigned char wxImage::GetMaskGreen() const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    return M_IMGDATA->m_maskGreen;
+}
+
+unsigned char wxImage::GetMaskBlue() const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    return M_IMGDATA->m_maskBlue;
+}
+
+void wxImage::SetMask( bool mask )
+{
+    wxCHECK_RET( Ok(), wxT("invalid image") );
+
+    M_IMGDATA->m_hasMask = mask;
+}
+
+bool wxImage::HasMask() const
+{
+    wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
+
+    return M_IMGDATA->m_hasMask;
+}
+
+int wxImage::GetWidth() const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    return M_IMGDATA->m_width;
+}
+
+int wxImage::GetHeight() const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    return M_IMGDATA->m_height;
+}
+
+
+bool wxImage::FindFirstUnusedColour(
+            unsigned char *r, unsigned char *g, unsigned char *b,
+            unsigned char startR, unsigned char startG, unsigned char startB) const
+{
+    wxImageHistogram histogram;
+    unsigned long key;
+   
+    ComputeHistogram(histogram);
+    
+    unsigned char r2 = startR;
+    unsigned char g2 = startG;
+    unsigned char b2 = startB;
+    
+    key = (r2 << 16) | (g2 << 8) | b2;
+
+    while ( histogram.find(key) != histogram.end() )
+    {
+        // color already used
+        r2++;
+        if ( r2 >= 255 )
+        {
+            r2 = 0;
+            g2++;
+            if ( g2 >= 255 )
+            {
+                g2 = 0;
+                b2++;
+                if ( b2 >= 255 )
+                {
+                    wxLogError( _("GetUnusedColour:: No Unused Color in image ") );            
+                    return FALSE;                              
+                }
+            }
+        }
+        
+        key = (r2 << 16) | (g2 << 8) | b2;
+    }
+    
+    if (r) *r = r2;
+    if (g) *g = g2;
+    if (b) *b = b2;
+    
+    return TRUE;
+}
+
+
+bool wxImage::SetMaskFromImage(const wxImage& mask, 
+                               unsigned char mr, unsigned char mg, unsigned char mb)
+{
+    // check that the images are the same size
+    if ( (M_IMGDATA->m_height != mask.GetHeight() ) || (M_IMGDATA->m_width != mask.GetWidth () ) )
+    {
+        wxLogError( _("Image and Mask have different sizes") );            
+        return FALSE;
+    }
+    
+    // find unused colour
+    unsigned char r,g,b ;
+    if (!FindFirstUnusedColour(&r, &g, &b))
+    {
+        wxLogError( _("No Unused Color in image being masked") );            
+        return FALSE ;
+    }
+        
+    char unsigned *imgdata = GetData();
+    char unsigned *maskdata = mask.GetData();
+
+    const int w = GetWidth();
+    const int h = GetHeight();
+
+    for (int j = 0; j < h; j++)
+    {
+        for (int i = 0; i < w; i++)
+        {
+            if ((maskdata[0] == mr) && (maskdata[1]  == mg) && (maskdata[2] == mb))
+            {
+                imgdata[0] = r;
+                imgdata[1] = g;
+                imgdata[2] = b;
+            }
+            imgdata  += 3;
+            maskdata += 3;
+        }
+    }

 
 

-//-----------------------------------------------------------------------------
+    SetMaskColour(r, g, b);
+    SetMask(TRUE);
+    
+    return TRUE;
+}

 
 

-#define M_IMGDATA ((wxImageRefData *)m_refData)
+#if wxUSE_PALETTE

 
 

-#if !USE_SHARED_LIBRARIES
-IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject)
-#endif
+// Palette functions

 
 

-wxImage::wxImage()
+bool wxImage::HasPalette() const

 {
 {

+    if (!Ok())
+        return FALSE;
+
+    return M_IMGDATA->m_palette.Ok();

 }
 
 }
 

-wxImage::wxImage( int width, int height )
+const wxPalette& wxImage::GetPalette() const

 {
 {

-    Create( width, height );
+    wxCHECK_MSG( Ok(), wxNullPalette, wxT("invalid image") );
+
+    return M_IMGDATA->m_palette;

 }
 
 }
 

-wxImage::wxImage( const wxString& name, long type )
+void wxImage::SetPalette(const wxPalette& palette)

 {
 {

-    LoadFile( name, type );
-}
+    wxCHECK_RET( Ok(), wxT("invalid image") );

 
 

-wxImage::wxImage( const wxImage& image )  
-{  
-    Ref(image); 
+    M_IMGDATA->m_palette = palette;

 }
 
 }
 

-wxImage::wxImage( const wxImage* image )  
-{ 
-    if (image) Ref(*image); 
-}
+#endif // wxUSE_PALETTE

 
 

-void wxImage::Create( int width, int height )
+// Option functions (arbitrary name/value mapping)
+void wxImage::SetOption(const wxString& name, const wxString& value)

 {
 {

-    m_refData = new wxImageRefData();
-  
-    M_IMGDATA->m_data = (unsigned char *) malloc( width*height*3 );
-    if (M_IMGDATA->m_data)
+    wxCHECK_RET( Ok(), wxT("invalid image") );
+
+    int idx = M_IMGDATA->m_optionNames.Index(name, FALSE);
+    if (idx == wxNOT_FOUND)

     {
     {

-        for (int l = 0; l < width*height*3; l++) M_IMGDATA->m_data[l] = 0;
-  
-        M_IMGDATA->m_width = width;
-        M_IMGDATA->m_height = height;
-        M_IMGDATA->m_ok = TRUE;
+        M_IMGDATA->m_optionNames.Add(name);
+        M_IMGDATA->m_optionValues.Add(value);

     }
     else
     {
     }
     else
     {

-        UnRef();
+        M_IMGDATA->m_optionNames[idx] = name;
+        M_IMGDATA->m_optionValues[idx] = value;

     }
 }
 
     }
 }
 

-void wxImage::Destroy()
+void wxImage::SetOption(const wxString& name, int value)

 {
 {

-    UnRef();
+    wxString valStr;
+    valStr.Printf(wxT("%d"), value);
+    SetOption(name, valStr);

 }
 
 }
 

-bool wxImage::Ok() const 
-{ 
-    return (M_IMGDATA && M_IMGDATA->m_ok); 
+wxString wxImage::GetOption(const wxString& name) const
+{
+    wxCHECK_MSG( Ok(), wxEmptyString, wxT("invalid image") );
+
+    int idx = M_IMGDATA->m_optionNames.Index(name, FALSE);
+    if (idx == wxNOT_FOUND)
+        return wxEmptyString;
+    else
+        return M_IMGDATA->m_optionValues[idx];

 }
 
 }
 

-char unsigned *wxImage::GetData() const
+int wxImage::GetOptionInt(const wxString& name) const

 {
 {

-    if (!Ok()) return (char unsigned *)NULL;
-  
-    return M_IMGDATA->m_data;
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    return wxAtoi(GetOption(name));

 }
 
 }
 

-void wxImage::SetData( char unsigned *WXUNUSED(data) )
+bool wxImage::HasOption(const wxString& name) const

 {
 {

+    wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
+
+    return (M_IMGDATA->m_optionNames.Index(name, FALSE) != wxNOT_FOUND);

 }
 
 }
 

-void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
+bool wxImage::LoadFile( const wxString& filename, long type, int index )

 {
 {

-    if (!Ok()) return;
-  
-    M_IMGDATA->m_maskRed = r;
-    M_IMGDATA->m_maskGreen = g;
-    M_IMGDATA->m_maskBlue = b;
-    M_IMGDATA->m_hasMask = TRUE;
+#if wxUSE_STREAMS
+    if (wxFileExists(filename))
+    {
+        wxFileInputStream stream(filename);
+        wxBufferedInputStream bstream( stream );
+        return LoadFile(bstream, type, index);
+    }
+    else
+    {
+        wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() );
+
+        return FALSE;
+    }
+#else // !wxUSE_STREAMS
+    return FALSE;
+#endif // wxUSE_STREAMS

 }
 
 }
 

-unsigned char wxImage::GetMaskRed() const
+bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype, int index )

 {
 {

-    if (!Ok()) return 0;
-  
-    return M_IMGDATA->m_maskRed;
+#if wxUSE_STREAMS
+    if (wxFileExists(filename))
+    {
+        wxFileInputStream stream(filename);
+        wxBufferedInputStream bstream( stream );
+        return LoadFile(bstream, mimetype, index);
+    }
+    else
+    {
+        wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() );
+
+        return FALSE;
+    }
+#else // !wxUSE_STREAMS
+    return FALSE;
+#endif // wxUSE_STREAMS

 }
 
 }
 

-unsigned char wxImage::GetMaskGreen() const
+bool wxImage::SaveFile( const wxString& filename, int type ) const

 {
 {

-    if (!Ok()) return 0;
-   
-    return M_IMGDATA->m_maskGreen;
+#if wxUSE_STREAMS
+    wxFileOutputStream stream(filename);
+
+    if ( stream.LastError() == wxStream_NOERROR )
+    {
+        wxBufferedOutputStream bstream( stream );
+        return SaveFile(bstream, type);
+    }
+#endif // wxUSE_STREAMS
+
+    return FALSE;

 }
 
 }
 

-unsigned char wxImage::GetMaskBlue() const
+bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype ) const

 {
 {

-    if (!Ok()) return 0;
-  
-    return M_IMGDATA->m_maskBlue;
+#if wxUSE_STREAMS
+    wxFileOutputStream stream(filename);
+
+    if ( stream.LastError() == wxStream_NOERROR )
+    {
+        wxBufferedOutputStream bstream( stream );
+        return SaveFile(bstream, mimetype);
+    }
+#endif // wxUSE_STREAMS
+
+    return FALSE;

 }
 }

-  
-void wxImage::SetMask( bool mask )
+
+bool wxImage::CanRead( const wxString &name )

 {
 {

-    if (!Ok()) return;
-  
-    M_IMGDATA->m_hasMask = mask;
+#if wxUSE_STREAMS
+  wxFileInputStream stream(name);
+  return CanRead(stream);
+#else
+  return FALSE;
+#endif

 }
 
 }
 

-bool wxImage::HasMask() const
+int wxImage::GetImageCount( const wxString &name, long type )

 {
 {

-    if (!Ok()) return FALSE;
-  
-    return M_IMGDATA->m_hasMask;
+#if wxUSE_STREAMS
+  wxFileInputStream stream(name);
+  return GetImageCount(stream, type);
+#else
+  return 0;
+#endif

 }
 
 }
 

-int wxImage::GetWidth() const 
-{ 
-    return (M_IMGDATA ? M_IMGDATA->m_width : 0); 
+#if wxUSE_STREAMS
+
+bool wxImage::CanRead( wxInputStream &stream )
+{
+    wxList &list=GetHandlers();
+
+    for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
+    {
+        wxImageHandler *handler=(wxImageHandler*)node->GetData();
+        if (handler->CanRead( stream ))
+            return TRUE;
+    }
+
+    return FALSE;

 }
 
 }
 

-int wxImage::GetHeight() const 
-{ 
-    return (M_IMGDATA ? M_IMGDATA->m_height : 0); 
+int wxImage::GetImageCount( wxInputStream &stream, long type )
+{
+    wxImageHandler *handler;
+
+    if ( type == wxBITMAP_TYPE_ANY )
+    {
+        wxList &list=GetHandlers();
+
+        for (wxList::Node *node = list.GetFirst(); node; node = node->GetNext())
+        {
+             handler=(wxImageHandler*)node->GetData();
+             if ( handler->CanRead(stream) )
+                 return handler->GetImageCount(stream);
+
+        }
+
+        wxLogWarning(_("No handler found for image type."));
+        return 0;
+    }
+
+    handler = FindHandler(type);
+
+    if ( !handler )
+    {
+        wxLogWarning(_("No image handler for type %d defined."), type);
+        return FALSE;
+    }
+
+    if ( handler->CanRead(stream) )
+    {
+        return handler->GetImageCount(stream);
+    }
+    else
+    {
+        wxLogError(_("Image file is not of type %d."), type);
+        return 0;
+    }

 }
 
 }
 

-bool wxImage::LoadFile( const wxString& filename, long type )
+bool wxImage::LoadFile( wxInputStream& stream, long type, int index )

 {
     UnRef();
 {
     UnRef();

-  
-    if (!wxFileExists(filename))
+
+    m_refData = new wxImageRefData;
+
+    wxImageHandler *handler;
+
+    if ( type == wxBITMAP_TYPE_ANY )
+    {
+        wxList &list=GetHandlers();
+
+        for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
+        {
+             handler=(wxImageHandler*)node->GetData();
+             if ( handler->CanRead(stream) )
+                 return handler->LoadFile(this, stream, TRUE/*verbose*/, index);
+
+        }
+
+        wxLogWarning( _("No handler found for image type.") );
+        return FALSE;
+    }
+
+    handler = FindHandler(type);
+
+    if (handler == NULL)

     {
     {

-        wxLogWarning( "Image file does not exist." );
+        wxLogWarning( _("No image handler for type %d defined."), type );

 
         return FALSE;
     }
 
 
         return FALSE;
     }
 

+    return handler->LoadFile(this, stream, TRUE/*verbose*/, index);
+}
+
+bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int index )
+{
+    UnRef();
+

     m_refData = new wxImageRefData;
 
     m_refData = new wxImageRefData;
 

-    wxImageHandler *handler = FindHandler(type);
+    wxImageHandler *handler = FindHandlerMime(mimetype);

 
 

-    if (handler == NULL) 
+    if (handler == NULL)

     {
     {

-        wxLogWarning( "No image handler for type %d defined.", type );
+        wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );

 
         return FALSE;
     }
 
 
         return FALSE;
     }
 

-    return handler->LoadFile( this, filename );
+    return handler->LoadFile( this, stream, TRUE/*verbose*/, index );

 }
 
 }
 

-bool wxImage::SaveFile( const wxString& filename, int type )
+bool wxImage::SaveFile( wxOutputStream& stream, int type ) const

 {
 {

+    wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
+

     wxImageHandler *handler = FindHandler(type);
 
     wxImageHandler *handler = FindHandler(type);
 

-    if (handler == NULL) 
+    if (handler == NULL)
+    {
+        wxLogWarning( _("No image handler for type %d defined."), type );
+
+        return FALSE;
+    }
+
+    return handler->SaveFile( (wxImage*)this, stream );
+}
+
+bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const
+{
+    wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
+
+    wxImageHandler *handler = FindHandlerMime(mimetype);
+
+    if (handler == NULL)

     {
     {

-      wxLogWarning( "No image handler for type %d defined.", type );
+        wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );

 
 

-      return FALSE;
+        return FALSE;

     }
 
     }
 

-    return handler->SaveFile( this, filename );
+    return handler->SaveFile( (wxImage*)this, stream );

 }
 }

+#endif // wxUSE_STREAMS

 
 void wxImage::AddHandler( wxImageHandler *handler )
 {
 
 void wxImage::AddHandler( wxImageHandler *handler )
 {

+    // make sure that the memory will be freed at the program end
+    sm_handlers.DeleteContents(TRUE);
+

     sm_handlers.Append( handler );
 }
 
 void wxImage::InsertHandler( wxImageHandler *handler )
 {
     sm_handlers.Append( handler );
 }
 
 void wxImage::InsertHandler( wxImageHandler *handler )
 {

+    // make sure that the memory will be freed at the program end
+    sm_handlers.DeleteContents(TRUE);
+

     sm_handlers.Insert( handler );
 }
 
     sm_handlers.Insert( handler );
 }
 


@@ -256,7 +1156,8 @@ wxImageHandler *wxImage::FindHandler( const wxString& name )
     while (node)
     {
         wxImageHandler *handler = (wxImageHandler*)node->Data();
     while (node)
     {
         wxImageHandler *handler = (wxImageHandler*)node->Data();

-        if (handler->GetName() == name) return handler;
+        if (handler->GetName().Cmp(name) == 0) return handler;
+

         node = node->Next();
     }
     return (wxImageHandler *)NULL;
         node = node->Next();
     }
     return (wxImageHandler *)NULL;


@@ -268,9 +1169,9 @@ wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType
     while (node)
     {
         wxImageHandler *handler = (wxImageHandler*)node->Data();
     while (node)
     {
         wxImageHandler *handler = (wxImageHandler*)node->Data();

-        if ( handler->GetExtension() == extension &&
+        if ( (handler->GetExtension().Cmp(extension) == 0) &&

             (bitmapType == -1 || handler->GetType() == bitmapType) )
             (bitmapType == -1 || handler->GetType() == bitmapType) )

-        return handler;
+            return handler;

         node = node->Next();
     }
     return (wxImageHandler*)NULL;
         node = node->Next();
     }
     return (wxImageHandler*)NULL;


@@ -288,10 +1189,27 @@ wxImageHandler *wxImage::FindHandler( long bitmapType )
     return NULL;
 }
 
     return NULL;
 }
 

+wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
+{
+    wxNode *node = sm_handlers.First();
+    while (node)
+    {
+        wxImageHandler *handler = (wxImageHandler *)node->Data();
+        if (handler->GetMimeType().IsSameAs(mimetype, FALSE)) return handler;
+        node = node->Next();
+    }
+    return NULL;
+}
+

 void wxImage::InitStandardHandlers()
 {
 void wxImage::InitStandardHandlers()
 {

-    AddHandler( new wxBMPHandler );
-    AddHandler( new wxPNGHandler );
+#if wxUSE_STREAMS
+    AddHandler(new wxBMPHandler);
+#endif // wxUSE_STREAMS
+
+#if wxUSE_XPM && !defined(__WXGTK__) && !defined(__WXMOTIF__)
+    AddHandler(new wxXPMHandler);
+#endif

 }
 
 void wxImage::CleanUpHandlers()
 }
 
 void wxImage::CleanUpHandlers()


@@ -311,611 +1229,412 @@ void wxImage::CleanUpHandlers()
 // wxImageHandler
 //-----------------------------------------------------------------------------
 
 // wxImageHandler
 //-----------------------------------------------------------------------------
 

-#if !USE_SHARED_LIBRARIES
-IMPLEMENT_DYNAMIC_CLASS(wxImageHandler,wxObject)
-#endif
+IMPLEMENT_ABSTRACT_CLASS(wxImageHandler,wxObject)

 
 

-bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), const wxString& WXUNUSED(name) )
+#if wxUSE_STREAMS
+bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream), bool WXUNUSED(verbose), int WXUNUSED(index) )

 {
     return FALSE;
 }
 
 {
     return FALSE;
 }
 

-bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), const wxString& WXUNUSED(name) )
+bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) )

 {
     return FALSE;
 }
 
 {
     return FALSE;
 }
 

+int wxImageHandler::GetImageCount( wxInputStream& WXUNUSED(stream) )
+{
+    return 1;
+}
+
+bool wxImageHandler::CanRead( const wxString& name )
+{
+    if (wxFileExists(name))
+    {
+        wxFileInputStream stream(name);
+        return CanRead(stream);
+    }
+
+    else {
+        wxLogError( _("Can't check image format of file '%s': file does not exist."), name.c_str() );
+
+        return FALSE;
+    }
+//    return FALSE;
+}
+
+#endif // wxUSE_STREAMS
+
+
+

 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------

-// wxPNGHandler
+// wxBitmap convertion routines

 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 

-#if !USE_SHARED_LIBRARIES
-IMPLEMENT_DYNAMIC_CLASS(wxPNGHandler,wxImageHandler)
+#if wxUSE_GUI
+
+#ifdef __WXGTK__
+wxBitmap wxImage::ConvertToMonoBitmap( unsigned char red, unsigned char green, unsigned char blue ) const
+{
+    wxImage mono = this->ConvertToMono( red, green, blue );
+    wxBitmap bitmap( mono, 1 );
+    return bitmap;
+}

 #endif
 #endif

-  
-bool wxPNGHandler::LoadFile( wxImage *image, const wxString& name )
-{
-   FILE               *f;
-   png_structp         png_ptr;
-   png_infop           info_ptr;
-   unsigned char      *ptr, **lines, *ptr2;
-   int                 transp,bit_depth,color_type,interlace_type;
-   png_uint_32         width, height;
-   unsigned int               i;
-
-   image->Destroy();
-   
-   transp = 0;
-   png_ptr = png_create_read_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL );
-   if (!png_ptr) return FALSE;
-
-   info_ptr = png_create_info_struct( png_ptr );
-   if (!info_ptr)
-   {
-     png_destroy_read_struct( &png_ptr, NULL, NULL );
-     return FALSE;
-   }
-
-   if (setjmp(png_ptr->jmpbuf))
-   {
-     png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
-     return FALSE;
-   }
-
-   if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
-   {
-     png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
-     return FALSE;
-   }
-   
-   f = fopen( name, "rb" );
-   png_init_io( png_ptr, f );
-   
-   png_read_info( png_ptr, info_ptr );
-   png_get_IHDR( png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, NULL, NULL );
-   
-   if (color_type == PNG_COLOR_TYPE_PALETTE) png_set_expand( png_ptr );
-   
-   png_set_strip_16( png_ptr );
-   png_set_packing( png_ptr );
-   if (png_get_valid( png_ptr, info_ptr, PNG_INFO_tRNS)) png_set_expand( png_ptr );
-   png_set_filler( png_ptr, 0xff, PNG_FILLER_AFTER );
-   
-   image->Create( width, height );
-   
-   if (!image->Ok())
-   {
-     png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
-     return FALSE;
-   }
-   
-   lines = (unsigned char **)malloc( height * sizeof(unsigned char *) );
-   if (lines == NULL)
-   {
-     image->Destroy();
-     png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
-     return FALSE;
-   }
-   
-   for (i = 0; i < height; i++)
-   {
-     if ((lines[i] = (unsigned char *)malloc(width * (sizeof(unsigned char) * 4))) == NULL)
-     {
-       image->Destroy();
-       for (unsigned int n = 0; n < i; n++) free( lines[n] );
-       free( lines );
-       png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
-       return FALSE;
-     }
-  }
-     
-   png_read_image( png_ptr, lines );
-   png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
-   ptr = image->GetData();
-   if ((color_type == PNG_COLOR_TYPE_GRAY) ||
-       (color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
-     {
-       for (unsigned int y = 0; y < height; y++)
-         {
-            ptr2 = lines[y];
-            for (unsigned int x = 0; x < width; x++)
-              {
-                 unsigned char r = *ptr2++;
-                 unsigned char a = *ptr2++;
-                 if (a < 128)
-                   {
-                      *ptr++ = 255;
-                      *ptr++ = 0;
-                      *ptr++ = 255;
-                      transp = 1;
-                   }
-                 else
-                   {
-                      *ptr++ = r;
-                      *ptr++ = r;
-                      *ptr++ = r;
-                   }
-              }
-         }
-     }
-   else
-     {
-       for (unsigned int y = 0; y < height; y++)
-         {
-            ptr2 = lines[y];
-            for (unsigned int x = 0; x < width; x++)
-              {
-                 unsigned char r = *ptr2++;
-                 unsigned char g = *ptr2++;
-                 unsigned char b = *ptr2++;
-                 unsigned char a = *ptr2++;
-                 if (a < 128)
-                   {
-                      *ptr++ = 255;
-                      *ptr++ = 0;
-                      *ptr++ = 255;
-                      transp = 1;
-                   }
-                 else
-                   {
-                      if ((r == 255) && (g == 0) && (b == 255)) r = 254;
-                      *ptr++ = r;
-                      *ptr++ = g;
-                      *ptr++ = b;
-                   }
-              }
-         }
-     }
-   for (i = 0; i < height; i++) free( lines[i] );
-   free( lines );
-   if (transp)
-     image->SetMaskColour( 255, 0, 255 );
-   else
-     image->SetMask( FALSE );
-   
-   return TRUE;
+
+wxBitmap wxImage::ConvertToBitmap() const
+{
+    wxBitmap bitmap( *this );
+    return bitmap;
+}
+
+wxImage::wxImage( const wxBitmap &bitmap )
+{
+    *this = bitmap.ConvertToImage();

 }
 
 }
 

+#endif
+
+
+
+// A module to allow wxImage initialization/cleanup
+// without calling these functions from app.cpp or from
+// the user's application.
+
+class wxImageModule: public wxModule
+{
+DECLARE_DYNAMIC_CLASS(wxImageModule)
+public:
+    wxImageModule() {}
+    bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
+    void OnExit() { wxImage::CleanUpHandlers(); };
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)
+
+
+//-----------------------------------------------------------------------------

 
 

-bool wxPNGHandler::SaveFile( wxImage *image, const wxString& name )
+// GRG, Dic/99
+// Counts and returns the number of different colours. Optionally stops
+// when it exceeds 'stopafter' different colours. This is useful, for
+// example, to see if the image can be saved as 8-bit (256 colour or
+// less, in this case it would be invoked as CountColours(256)). Default
+// value for stopafter is -1 (don't care).
+//
+unsigned long wxImage::CountColours( unsigned long stopafter ) const

 {
 {

-  FILE *f = fopen( name, "wb" );
-  if (f)
-  {
-    png_structp png_ptr = png_create_write_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
-    if (!png_ptr) 
-    { 
-      fclose( f ); 
-      return FALSE; 
+    wxHashTable h;
+    wxObject dummy;
+    unsigned char r, g, b;
+    unsigned char *p;
+    unsigned long size, nentries, key;
+
+    p = GetData();
+    size = GetWidth() * GetHeight();
+    nentries = 0;
+
+    for (unsigned long j = 0; (j < size) && (nentries <= stopafter) ; j++)
+    {
+        r = *(p++);
+        g = *(p++);
+        b = *(p++);
+        key = (r << 16) | (g << 8) | b;
+
+        if (h.Get(key) == NULL)
+        {
+            h.Put(key, &dummy);
+            nentries++;
+        }

     }
     }

-    
-    png_infop info_ptr = png_create_info_struct(png_ptr);
-    if (info_ptr == NULL)
+
+    return nentries;
+}
+
+
+unsigned long wxImage::ComputeHistogram( wxImageHistogram &h ) const
+{
+    unsigned char r, g, b;
+    unsigned char *p;
+    unsigned long size, nentries, key;
+
+    h.clear();
+
+    p = GetData();
+    size = GetWidth() * GetHeight();
+    nentries = 0;
+
+    for (unsigned long j = 0; j < size; j++)

     {
     {

-      fclose(f);
-      png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
-      return FALSE;
+        r = *(p++);
+        g = *(p++);
+        b = *(p++);
+        key = (r << 16) | (g << 8) | b;
+
+        wxImageHistogramEntry& entry = h[key];
+        if ( entry.value++ == 0 )
+            entry.index = nentries++;

     }
     }

-    
-    if (setjmp(png_ptr->jmpbuf))
+
+    return nentries;
+}
+
+/*
+ * Rotation code by Carlos Moreno
+ */
+
+// GRG: I've removed wxRotationPoint - we already have wxRealPoint which
+//      does exactly the same thing. And I also got rid of wxRotationPixel
+//      bacause of potential problems in architectures where alignment
+//      is an issue, so I had to rewrite parts of the code.
+
+static const double gs_Epsilon = 1e-10;
+
+static inline int wxCint (double x)
+{
+    return (x > 0) ? (int) (x + 0.5) : (int) (x - 0.5);
+}
+
+
+// Auxiliary function to rotate a point (x,y) with respect to point p0
+// make it inline and use a straight return to facilitate optimization
+// also, the function receives the sine and cosine of the angle to avoid
+// repeating the time-consuming calls to these functions -- sin/cos can
+// be computed and stored in the calling function.
+
+inline wxRealPoint rotated_point (const wxRealPoint & p, double cos_angle, double sin_angle, const wxRealPoint & p0)
+{
+    return wxRealPoint (p0.x + (p.x - p0.x) * cos_angle - (p.y - p0.y) * sin_angle,
+                        p0.y + (p.y - p0.y) * cos_angle + (p.x - p0.x) * sin_angle);
+}
+
+inline wxRealPoint rotated_point (double x, double y, double cos_angle, double sin_angle, const wxRealPoint & p0)
+{
+    return rotated_point (wxRealPoint(x,y), cos_angle, sin_angle, p0);
+}
+
+wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool interpolating, wxPoint * offset_after_rotation) const
+{
+    int i;
+    angle = -angle;     // screen coordinates are a mirror image of "real" coordinates
+
+    // Create pointer-based array to accelerate access to wxImage's data
+    unsigned char ** data = new unsigned char * [GetHeight()];
+
+    data[0] = GetData();
+
+    for (i = 1; i < GetHeight(); i++)
+        data[i] = data[i - 1] + (3 * GetWidth());
+
+    // precompute coefficients for rotation formula
+    // (sine and cosine of the angle)
+    const double cos_angle = cos(angle);
+    const double sin_angle = sin(angle);
+
+    // Create new Image to store the result
+    // First, find rectangle that covers the rotated image;  to do that,
+    // rotate the four corners
+
+    const wxRealPoint p0(centre_of_rotation.x, centre_of_rotation.y);
+
+    wxRealPoint p1 = rotated_point (0, 0, cos_angle, sin_angle, p0);
+    wxRealPoint p2 = rotated_point (0, GetHeight(), cos_angle, sin_angle, p0);
+    wxRealPoint p3 = rotated_point (GetWidth(), 0, cos_angle, sin_angle, p0);
+    wxRealPoint p4 = rotated_point (GetWidth(), GetHeight(), cos_angle, sin_angle, p0);
+
+    int x1 = (int) floor (wxMin (wxMin(p1.x, p2.x), wxMin(p3.x, p4.x)));
+    int y1 = (int) floor (wxMin (wxMin(p1.y, p2.y), wxMin(p3.y, p4.y)));
+    int x2 = (int) ceil (wxMax (wxMax(p1.x, p2.x), wxMax(p3.x, p4.x)));
+    int y2 = (int) ceil (wxMax (wxMax(p1.y, p2.y), wxMax(p3.y, p4.y)));
+
+    wxImage rotated (x2 - x1 + 1, y2 - y1 + 1);
+
+    if (offset_after_rotation != NULL)

     {
     {

-      fclose( f );
-      png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
-      return FALSE;
+        *offset_after_rotation = wxPoint (x1, y1);

     }
     }

-    
-    png_init_io( png_ptr, f );
-    png_set_IHDR( png_ptr, info_ptr, image->GetWidth(), image->GetHeight(), 8,
-                 PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE,
-                 PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
-                         
-    png_color_8 sig_bit;
-    sig_bit.red = 8;
-    sig_bit.green = 8;
-    sig_bit.blue = 8;
-    sig_bit.alpha = 8;
-    png_set_sBIT( png_ptr, info_ptr, &sig_bit );
-    png_write_info( png_ptr, info_ptr );
-    png_set_shift( png_ptr, &sig_bit );
-    png_set_packing( png_ptr );
-    
-    unsigned char *data = (unsigned char *)malloc( image->GetWidth()*4 );
-    if (!data)
+
+    // GRG: The rotated (destination) image is always accessed
+    //      sequentially, so there is no need for a pointer-based
+    //      array here (and in fact it would be slower).
+    //
+    unsigned char * dst = rotated.GetData();
+
+    // GRG: if the original image has a mask, use its RGB values
+    //      as the blank pixel, else, fall back to default (black).
+    //
+    unsigned char blank_r = 0;
+    unsigned char blank_g = 0;
+    unsigned char blank_b = 0;
+
+    if (HasMask())

     {
     {

-      fclose( f );
-      png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
-      return FALSE;
+        blank_r = GetMaskRed();
+        blank_g = GetMaskGreen();
+        blank_b = GetMaskBlue();
+        rotated.SetMaskColour( blank_r, blank_g, blank_b );

     }
     }

-    
-    for (int y = 0; y < image->GetHeight(); y++)
-    {
-      unsigned char *ptr = image->GetData() + (y * image->GetWidth() * 3);
-      for (int x = 0; x < image->GetWidth(); x++)
-      {
-       data[(x << 2) + 0] = *ptr++;
-       data[(x << 2) + 1] = *ptr++;
-       data[(x << 2) + 2] = *ptr++;
-       if ((data[(x << 2) + 0] == image->GetMaskRed()) &&
-           (data[(x << 2) + 1] == image->GetMaskGreen()) &&
-           (data[(x << 2) + 2] == image->GetMaskBlue()))
-          data[(x << 2) + 3] = 0;
-       else
-         data[(x << 2) + 3] = 255;
-      }
-      png_bytep row_ptr = data;
-      png_write_rows( png_ptr, &row_ptr, 1 );
-    }
-    free(data);
-    png_write_end( png_ptr, info_ptr );
-    png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
-
-    fclose(f);
-  }
-  return TRUE;
-}

 
 

-//-----------------------------------------------------------------------------
-// wxBMPHandler
-//-----------------------------------------------------------------------------
+    // Now, for each point of the rotated image, find where it came from, by
+    // performing an inverse rotation (a rotation of -angle) and getting the
+    // pixel at those coordinates

 
 

-#if !USE_SHARED_LIBRARIES
-IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler)
-#endif
-  
-bool wxBMPHandler::LoadFile( wxImage *image, const wxString& name )
-{
-   FILE               *file;
-   unsigned char      *data, *ptr;
-   int                 done, i, bpp, planes, comp, ncolors, line, column,
-                       linesize, linepos, rshift = 0, gshift = 0, bshift = 0;
-   unsigned char       byte;
-   short int           word;
-   long int            dbuf[4], dword, rmask = 0, gmask = 0, bmask = 0, offset,
-                       size;
-   signed char         bbuf[4];
-   struct _cmap
-     {
-       unsigned char       r, g, b;
-     }
-                      *cmap = NULL;
-#ifndef BI_RGB
-#define BI_RGB       0
-#define BI_RLE8      1
-#define BI_RLE4      2
-#define BI_BITFIELDS 3
-#endif
+    // GRG: I've taken the (interpolating) test out of the loops, so that
+    //      it is done only once, instead of repeating it for each pixel.

 
 

-  image->Destroy();
-
-   file = fopen(name, "r");
-   if (!file)
-      return NULL;
-
-   done = 0;
-   /* 
-    * Reading the bmp header 
-    */
-
-   fread(&bbuf, 1, 2, file);
-
-   fread(dbuf, 4, 4, file);
-
-   size = dbuf[0];
-   offset = dbuf[2];
-
-   fread(dbuf, 4, 2, file);
-   int width = (int)dbuf[0];
-   int height = (int)dbuf[1];
-   if (width > 32767)
-     {
-       fprintf(stderr, "IMLIB ERROR: Image width > 32767 pixels for file\n");
-       fclose(file);
-       return FALSE;
-     }
-   if (height > 32767)
-     {
-       fprintf(stderr, "IMLIB ERROR: Image height > 32767 pixels for file\n");
-       fclose(file);
-       return FALSE;
-     }
-   fread(&word, 2, 1, file);
-   planes = (int)word;
-   fread(&word, 2, 1, file);
-   bpp = (int)word;
-   if (bpp != 1 && bpp != 4 && bpp != 8 && bpp && 16 && bpp != 24 && bpp != 32)
-     {
-       fprintf(stderr, "IMLIB ERROR: unknown bitdepth in file\n");
-       fclose(file);
-       return FALSE;
-     }
-   fread(dbuf, 4, 4, file);
-   comp = (int)dbuf[0];
-   if (comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && comp != BI_BITFIELDS)
-     {
-       fprintf(stderr, "IMLIB ERROR: unknown encoding in Windows BMP file\n");
-       fclose(file);
-       return FALSE;
-     }
-   fread(dbuf, 4, 2, file);
-   ncolors = (int)dbuf[0];
-   if (ncolors == 0)
-      ncolors = 1 << bpp;
-   /* some more sanity checks */
-   if (((comp == BI_RLE4) && (bpp != 4)) || ((comp == BI_RLE8) && (bpp != 8)) || ((comp == BI_BITFIELDS) && (bpp != 16 && bpp != 32)))
-     {
-       fprintf(stderr, "IMLIB ERROR: encoding of BMP doesn't match bitdepth\n");
-       fclose(file);
-       return FALSE;
-     }
-   if (bpp < 16)
-     {
-       cmap = (struct _cmap *)malloc(sizeof(struct _cmap) * ncolors);
-
-       if (!cmap)
-         {
-            fprintf(stderr, "IMLIB ERROR: Cannot allocate RAM for color map in BMP file\n");
-            fclose(file);
-            return FALSE;
-         }
-     }
-   else
-      cmap = NULL;
-      
-   image->Create( width, height );      
-   ptr = image->GetData();
-   if (!ptr)
-     {
-       fprintf(stderr, "IMLIB ERROR: Cannot allocate RAM for RGB data in file\n");
-       fclose(file);
-       if (cmap)
-          free(cmap);
-       return FALSE;
-     }
-
-   /*
-    * Reading the palette, if it exists.
-    */
-   if (bpp < 16 && ncolors != 0)
-     {
-       for (i = 0; i < ncolors; i++)
-         {
-            fread(bbuf, 1, 4, file);
-            cmap[i].b = bbuf[0];
-            cmap[i].g = bbuf[1];
-            cmap[i].r = bbuf[2];
-         }
-     }
-   else if (bpp == 16 || bpp == 32)
-     {
-       if (comp == BI_BITFIELDS)
-         {
-            int                 bit = 0;
-
-            fread(dbuf, 4, 3, file);
-            bmask = dbuf[0];
-            gmask = dbuf[1];
-            rmask = dbuf[2];
-            /* find shift amount.. ugly, but i can't think of a better way */
-            for (bit = 0; bit < bpp; bit++)
-              {
-                 if (bmask & (1 << bit))
-                    bshift = bit;
-                 if (gmask & (1 << bit))
-                    gshift = bit;
-                 if (rmask & (1 << bit))
-                    rshift = bit;
-              }
-         }
-       else if (bpp == 16)
-         {
-            rmask = 0x7C00;
-            gmask = 0x03E0;
-            bmask = 0x001F;
-            rshift = 10;
-            gshift = 5;
-            bshift = 0;
-         }
-       else if (bpp == 32)
-         {
-            rmask = 0x00FF0000;
-            gmask = 0x0000FF00;
-            bmask = 0x000000FF;
-            rshift = 16;
-            gshift = 8;
-            bshift = 0;
-         }
-     }
-
-   /*
-    * REading the image data
-    */
-   fseek(file, offset, SEEK_SET);
-   data = ptr;
-
-   /* set the whole image to the background color */
-   if (bpp < 16 && (comp == BI_RLE4 || comp == BI_RLE8))
-     {
-       for (i = 0; i < width * height; i++)
-         {
-            *ptr++ = cmap[0].r;
-            *ptr++ = cmap[0].g;
-            *ptr++ = cmap[0].b;
-         }
-       ptr = data;
-     }
-   line = 0;
-   column = 0;
-#define poffset (line * width * 3 + column * 3)
-
-   /*
-    * BMPs are stored upside down... hmmmmmmmmmm....
-    */
-
-   linesize = ((width * bpp + 31) / 32) * 4;
-   for (line = (height - 1); line >= 0; line--)
-     {
-       linepos = 0;
-       for (column = 0; column < width;)
-         {
-            if (bpp < 16)
-              {
-                 int                 index;
-
-                 linepos++;
-                 byte = getc(file);
-                 if (bpp == 1)
-                   {
-                      int                 bit = 0;
-
-                      for (bit = 0; bit < 8; bit++)
-                        {
-                           index = ((byte & (0x80 >> bit)) ? 1 : 0);
-                           ptr[poffset] = cmap[index].r;
-                           ptr[poffset + 1] = cmap[index].g;
-                           ptr[poffset + 2] = cmap[index].b;
-                           column++;
-                        }
-                   }
-                 else if (bpp == 4)
-                   {
-                      if (comp == BI_RLE4)
-                        {
-                           fprintf(stderr, "can't deal with 4bit encoded yet.\n");
-                           image->Destroy();
-                           free(cmap);
-                           return FALSE;
-                        }
-                      else
-                        {
-                           int                 nibble = 0;
-
-                           for (nibble = 0; nibble < 2; nibble++)
-                             {
-                                index = ((byte & (0xF0 >> nibble * 4)) >> (!nibble * 4));
-                                if (index >= 16)
-                                   index = 15;
-                                ptr[poffset] = cmap[index].r;
-                                ptr[poffset + 1] = cmap[index].g;
-                                ptr[poffset + 2] = cmap[index].b;
-                                column++;
-                             }
-                        }
-                   }
-                 else if (bpp == 8)
-                   {
-                      if (comp == BI_RLE8)
-                        {
-                           unsigned char       first;
-
-                           first = byte;
-                           byte = getc(file);
-                           if (first == 0)
-                             {
-                                if (byte == 0)
-                                  {
-/*                                    column = width; */
-                                  }
-                                else if (byte == 1)
-                                  {
-                                     column = width;
-                                     line = -1;
-                                  }
-                                else if (byte == 2)
-                                  {
-                                     byte = getc(file);
-                                     column += byte;
-                                     linepos = column * bpp / 8;
-                                     byte = getc(file);
-                                     line += byte;
-                                  }
-                                else
-                                  {
-                                     int                 absolute = byte;
-
-                                     for (i = 0; i < absolute; i++)
-                                       {
-                                          +linepos++;
-                                          byte = getc(file);
-                                          ptr[poffset] = cmap[byte].r;
-                                          ptr[poffset + 1] = cmap[byte].g;
-                                          ptr[poffset + 2] = cmap[byte].b;
-                                          column++;
-                                       }
-                                     if (absolute & 0x01)
-                                        byte = getc(file);
-                                  }
-                             }
-                           else
-                             {
-                                for (i = 0; i < first; i++)
-                                  {
-                                     ptr[poffset] = cmap[byte].r;
-                                     ptr[poffset + 1] = cmap[byte].g;
-                                     ptr[poffset + 2] = cmap[byte].b;
-                                     column++;
-                                     linepos++;
-                                  }
-                             }
-                        }
-                      else
-                        {
-                           ptr[poffset] = cmap[byte].r;
-                           ptr[poffset + 1] = cmap[byte].g;
-                           ptr[poffset + 2] = cmap[byte].b;
-                           column++;
-                           linepos += size;
-                        }
-                   }
-              }
-            else if (bpp == 24)
-              {
-                 linepos += fread(&bbuf, 1, 3, file);
-                 ptr[poffset] = (unsigned char)bbuf[2];
-                 ptr[poffset + 1] = (unsigned char)bbuf[1];
-                 ptr[poffset + 2] = (unsigned char)bbuf[0];
-                 column++;
-              }
-            else if (bpp == 16)
-              {
-                 unsigned char       temp;
-
-                 linepos += fread(&word, 2, 1, file);
-                 temp = (word & rmask) >> rshift;
-                 ptr[poffset] = temp;
-                 temp = (word & gmask) >> gshift;
-                 ptr[poffset + 1] = temp;
-                 temp = (word & bmask) >> gshift;
-                 ptr[poffset + 2] = temp;
-                 column++;
-              }
-            else
-              {
-                 unsigned char       temp;
-
-                 linepos += fread(&dword, 4, 1, file);
-                 temp = (dword & rmask) >> rshift;
-                 ptr[poffset] = temp;
-                 temp = (dword & gmask) >> gshift;
-                 ptr[poffset + 1] = temp;
-                 temp = (dword & bmask) >> bshift;
-                 ptr[poffset + 2] = temp;
-                 column++;
-              }
-         }
-       while ((linepos < linesize) && (comp != 1) && (comp != 2))
-         {
-            int                 temp = fread(&byte, 1, 1, file);
-
-            linepos += temp;
-            if (!temp)
-               break;
-         }
-     }
-   if (cmap) free(cmap);
-      
-   image->SetMask( FALSE );
-   
-   fclose(file);
-   return TRUE;
+    int x;
+    if (interpolating)
+    {
+        for (int y = 0; y < rotated.GetHeight(); y++)
+        {
+            for (x = 0; x < rotated.GetWidth(); x++)
+            {
+                wxRealPoint src = rotated_point (x + x1, y + y1, cos_angle, -sin_angle, p0);
+
+                if (-0.25 < src.x && src.x < GetWidth() - 0.75 &&
+                    -0.25 < src.y && src.y < GetHeight() - 0.75)
+                {
+                    // interpolate using the 4 enclosing grid-points.  Those
+                    // points can be obtained using floor and ceiling of the
+                    // exact coordinates of the point
+                        // C.M. 2000-02-17:  when the point is near the border, special care is required.
+
+                    int x1, y1, x2, y2;
+
+                    if (0 < src.x && src.x < GetWidth() - 1)
+                    {
+                        x1 = wxCint(floor(src.x));
+                        x2 = wxCint(ceil(src.x));
+                    }
+                    else    // else means that x is near one of the borders (0 or width-1)
+                    {
+                        x1 = x2 = wxCint (src.x);
+                    }
+
+                    if (0 < src.y && src.y < GetHeight() - 1)
+                    {
+                        y1 = wxCint(floor(src.y));
+                        y2 = wxCint(ceil(src.y));
+                    }
+                    else
+                    {
+                        y1 = y2 = wxCint (src.y);
+                    }
+
+                    // get four points and the distances (square of the distance,
+                    // for efficiency reasons) for the interpolation formula
+
+                    // GRG: Do not calculate the points until they are
+                    //      really needed -- this way we can calculate
+                    //      just one, instead of four, if d1, d2, d3
+                    //      or d4 are < gs_Epsilon
+
+                    const double d1 = (src.x - x1) * (src.x - x1) + (src.y - y1) * (src.y - y1);
+                    const double d2 = (src.x - x2) * (src.x - x2) + (src.y - y1) * (src.y - y1);
+                    const double d3 = (src.x - x2) * (src.x - x2) + (src.y - y2) * (src.y - y2);
+                    const double d4 = (src.x - x1) * (src.x - x1) + (src.y - y2) * (src.y - y2);
+
+                    // Now interpolate as a weighted average of the four surrounding
+                    // points, where the weights are the distances to each of those points
+
+                    // If the point is exactly at one point of the grid of the source
+                    // image, then don't interpolate -- just assign the pixel
+
+                    if (d1 < gs_Epsilon)        // d1,d2,d3,d4 are positive -- no need for abs()
+                    {
+                        unsigned char *p = data[y1] + (3 * x1);
+                        *(dst++) = *(p++);
+                        *(dst++) = *(p++);
+                        *(dst++) = *(p++);
+                    }
+                    else if (d2 < gs_Epsilon)
+                    {
+                        unsigned char *p = data[y1] + (3 * x2);
+                        *(dst++) = *(p++);
+                        *(dst++) = *(p++);
+                        *(dst++) = *(p++);
+                    }
+                    else if (d3 < gs_Epsilon)
+                    {
+                        unsigned char *p = data[y2] + (3 * x2);
+                        *(dst++) = *(p++);
+                        *(dst++) = *(p++);
+                        *(dst++) = *(p++);
+                    }
+                    else if (d4 < gs_Epsilon)
+                    {
+                        unsigned char *p = data[y2] + (3 * x1);
+                        *(dst++) = *(p++);
+                        *(dst++) = *(p++);
+                        *(dst++) = *(p++);
+                    }
+                    else
+                    {
+                        // weights for the weighted average are proportional to the inverse of the distance
+                        unsigned char *v1 = data[y1] + (3 * x1);
+                        unsigned char *v2 = data[y1] + (3 * x2);
+                        unsigned char *v3 = data[y2] + (3 * x2);
+                        unsigned char *v4 = data[y2] + (3 * x1);
+
+                        const double w1 = 1/d1, w2 = 1/d2, w3 = 1/d3, w4 = 1/d4;
+
+                        // GRG: Unrolled.
+
+                        *(dst++) = (unsigned char)
+                            ( (w1 * *(v1++) + w2 * *(v2++) +
+                               w3 * *(v3++) + w4 * *(v4++)) /
+                              (w1 + w2 + w3 + w4) );
+                        *(dst++) = (unsigned char)
+                            ( (w1 * *(v1++) + w2 * *(v2++) +
+                               w3 * *(v3++) + w4 * *(v4++)) /
+                              (w1 + w2 + w3 + w4) );
+                        *(dst++) = (unsigned char)
+                            ( (w1 * *(v1++) + w2 * *(v2++) +
+                               w3 * *(v3++) + w4 * *(v4++)) /
+                              (w1 + w2 + w3 + w4) );
+                    }
+                }
+                else
+                {
+                    *(dst++) = blank_r;
+                    *(dst++) = blank_g;
+                    *(dst++) = blank_b;
+                }
+            }
+        }
+    }
+    else    // not interpolating
+    {
+        for (int y = 0; y < rotated.GetHeight(); y++)
+        {
+            for (x = 0; x < rotated.GetWidth(); x++)
+            {
+                wxRealPoint src = rotated_point (x + x1, y + y1, cos_angle, -sin_angle, p0);
+
+                const int xs = wxCint (src.x);      // wxCint rounds to the
+                const int ys = wxCint (src.y);      // closest integer
+
+                if (0 <= xs && xs < GetWidth() &&
+                    0 <= ys && ys < GetHeight())
+                {
+                    unsigned char *p = data[ys] + (3 * xs);
+                    *(dst++) = *(p++);
+                    *(dst++) = *(p++);
+                    *(dst++) = *(p++);
+                }
+                else
+                {
+                    *(dst++) = blank_r;
+                    *(dst++) = blank_g;
+                    *(dst++) = blank_b;
+                }
+            }
+        }
+    }
+
+    delete [] data;
+
+    return rotated;

 }
 
 }
 

+#endif // wxUSE_IMAGE