fixed wxTaskBarIcon compilation

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

diff --git a/src/common/imagbmp.cpp b/src/common/imagbmp.cpp
index 556802bfadb61a52f7963b0881be9767cc895c0d..bb388134af4648297f129489b85a967e1c5fd522 100644 (file)
--- a/src/common/imagbmp.cpp
+++ b/src/common/imagbmp.cpp
@@ -7,10 +7,9 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-/*
-   We don't put pragma implement in this file because it is already present in
-   src/common/image.cpp
-*/
+#ifdef __GNUG__
+#pragma implementation "imagbmp.h"
+#endif

 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"


@@ -19,7 +18,11 @@
 #pragma hdrstop
 #endif
 
 #pragma hdrstop
 #endif
 

-#include "wx/image.h"
+#include "wx/defs.h"
+
+#if wxUSE_IMAGE
+
+#include "wx/imagbmp.h"

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


@@ -28,6 +31,7 @@
 #include "wx/wfstream.h"
 #include "wx/intl.h"
 #include "wx/module.h"
 #include "wx/wfstream.h"
 #include "wx/intl.h"
 #include "wx/module.h"

+#include "wx/quantize.h"

 
 // For memcpy
 #include <string.h>
 
 // For memcpy
 #include <string.h>


@@ -48,136 +52,469 @@
 
 IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler)
 
 
 IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler)
 

-#if wxUSE_STREAMS

 
 

-#ifndef BI_RGB
-#define BI_RGB       0
-#define BI_RLE8      1
-#define BI_RLE4      2
-#endif
-
-#ifndef BI_BITFIELDS
-#define BI_BITFIELDS 3
-#endif
+#if wxUSE_STREAMS

 
 

-#define poffset (line * width * 3 + column * 3)

 
 

-bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) )
+bool wxBMPHandler::SaveFile(wxImage *image,
+                            wxOutputStream& stream,
+                            bool verbose)

 {
 {

-    int             rshift = 0, gshift = 0, bshift = 0;
-    wxUint8         aByte;
-    wxUint16        aWord;
-    wxInt32         dbuf[4], aDword,
-                    rmask = 0, gmask = 0, bmask = 0;
-    wxInt8          bbuf[4];
-    struct _cmap {
-        unsigned char r, g, b;
-    } *cmap = NULL;
+    wxCHECK_MSG( image, FALSE, _T("invalid pointer in wxBMPHandler::SaveFile") );

 
 

-    off_t start_offset = stream.TellI();
+    if (!image->Ok())
+    {
+        if (verbose) wxLogError(_("BMP: Couldn't save invalid image."));
+        return FALSE;
+    }

 
 

-    image->Destroy();
+    // get the format of the BMP file to save, else use 24bpp
+    unsigned format = wxBMP_24BPP;
+    if (image->HasOption(wxBMP_FORMAT))
+        format = image->GetOptionInt(wxBMP_FORMAT);

 
 

-    /*
-     * Read the BMP header
-     */
+    unsigned bpp;     // # of bits per pixel
+    int palette_size; // # of color map entries, ie. 2^bpp colors

 
 

-    stream.Read( &bbuf, 2 );
-    stream.Read( dbuf, 4 * 4 );
+    // set the bpp and appropriate palette_size, and do additional checks
+    if ((format == wxBMP_1BPP) || (format == wxBMP_1BPP_BW))
+    {
+        bpp = 1;
+        palette_size = 2;
+    }
+    else if (format == wxBMP_4BPP)
+    {
+        bpp = 4;
+        palette_size = 16;
+    }
+    else if ((format == wxBMP_8BPP) || (format == wxBMP_8BPP_GREY) ||
+             (format == wxBMP_8BPP_RED) || (format == wxBMP_8BPP_PALETTE))
+    {
+        // need to set a wxPalette to use this, HOW TO CHECK IF VALID, SIZE?
+        if ((format == wxBMP_8BPP_PALETTE)
+#if wxUSE_PALETTE
+                && !image->HasPalette()
+#endif // wxUSE_PALETTE
+            )
+        {
+            if (verbose)
+                wxLogError(_("BMP: wImage doesn't have own wxPalette."));
+            return FALSE;
+        }
+        bpp = 8;
+        palette_size = 256;
+    }
+    else  // you get 24bpp
+    {
+        format = wxBMP_24BPP;
+        bpp = 24;
+        palette_size = 0;
+    }

 
 

-#if 0 // unused
-    wxInt32 size = wxINT32_SWAP_ON_BE( dbuf[0] );
-#endif
-    wxInt32 offset = wxINT32_SWAP_ON_BE( dbuf[2] );
+    unsigned width = image->GetWidth();
+    unsigned row_padding = (4 - int(width*bpp/8.0) % 4) % 4; // # bytes to pad to dword
+    unsigned row_width = int(width * bpp/8.0) + row_padding; // # of bytes per row

 
 

-    stream.Read(dbuf, 4 * 2);
-    int width = (int)wxINT32_SWAP_ON_BE( dbuf[0] );
-    int height = (int)wxINT32_SWAP_ON_BE( dbuf[1] );
-    if (width > 32767)
+    struct
+    {
+        // BitmapHeader:
+        wxUint16  magic;          // format magic, always 'BM'
+        wxUint32  filesize;       // total file size, inc. headers
+        wxUint32  reserved;       // for future use
+        wxUint32  data_offset;    // image data offset in the file
+
+        // BitmapInfoHeader:
+        wxUint32  bih_size;       // 2nd part's size
+        wxUint32  width, height;  // bitmap's dimensions
+        wxUint16  planes;         // num of planes
+        wxUint16  bpp;            // bits per pixel
+        wxUint32  compression;    // compression method
+        wxUint32  size_of_bmp;    // size of the bitmap
+        wxUint32  h_res, v_res;   // image resolution in dpi
+        wxUint32  num_clrs;       // number of colors used
+        wxUint32  num_signif_clrs;// number of significant colors
+    } hdr;
+
+    wxUint32 hdr_size = 14/*BitmapHeader*/ + 40/*BitmapInfoHeader*/;
+
+    hdr.magic = wxUINT16_SWAP_ON_BE(0x4D42/*'BM'*/);
+    hdr.filesize = wxUINT32_SWAP_ON_BE( hdr_size + palette_size*4 +
+                                        row_width * image->GetHeight() );
+    hdr.reserved = 0;
+    hdr.data_offset = wxUINT32_SWAP_ON_BE(hdr_size + palette_size*4);
+
+    hdr.bih_size = wxUINT32_SWAP_ON_BE(hdr_size - 14);
+    hdr.width = wxUINT32_SWAP_ON_BE(image->GetWidth());
+    hdr.height = wxUINT32_SWAP_ON_BE(image->GetHeight());
+    hdr.planes = wxUINT16_SWAP_ON_BE(1); // always 1 plane
+    hdr.bpp = wxUINT16_SWAP_ON_BE(bpp);
+    hdr.compression = 0; // RGB uncompressed
+    hdr.size_of_bmp = wxUINT32_SWAP_ON_BE(row_width * image->GetHeight());
+    hdr.h_res = hdr.v_res = wxUINT32_SWAP_ON_BE(72);  // 72dpi is standard
+    hdr.num_clrs = wxUINT32_SWAP_ON_BE(palette_size); // # colors in colormap
+    hdr.num_signif_clrs = 0;     // all colors are significant
+
+    if (// VS: looks ugly but compilers tend to do ugly things with structs,
+        //     like aligning hdr.filesize's ofset to dword :(
+        // VZ: we should add padding then...
+        !stream.Write(&hdr.magic, 2) ||
+        !stream.Write(&hdr.filesize, 4) ||
+        !stream.Write(&hdr.reserved, 4) ||
+        !stream.Write(&hdr.data_offset, 4) ||
+        !stream.Write(&hdr.bih_size, 4) ||
+        !stream.Write(&hdr.width, 4) ||
+        !stream.Write(&hdr.height, 4) ||
+        !stream.Write(&hdr.planes, 2) ||
+        !stream.Write(&hdr.bpp, 2) ||
+        !stream.Write(&hdr.compression, 4) ||
+        !stream.Write(&hdr.size_of_bmp, 4) ||
+        !stream.Write(&hdr.h_res, 4) ||
+        !stream.Write(&hdr.v_res, 4) ||
+        !stream.Write(&hdr.num_clrs, 4) ||
+        !stream.Write(&hdr.num_signif_clrs, 4)
+       )

     {
         if (verbose)
     {
         if (verbose)

-            wxLogError( _("BMP: Image width > 32767 pixels for file.") );
+            wxLogError(_("BMP: Couldn't write the file header."));

         return FALSE;
     }
         return FALSE;
     }

-    if (height > 32767)
+
+    wxPalette *palette = NULL; // entries for quantized images
+    wxUint8 *rgbquad = NULL;   // for the RGBQUAD bytes for the colormap
+    wxImage *q_image = NULL;   // destination for quantized image
+
+    // if <24bpp use quantization to reduce colors for *some* of the formats
+    if ( (format == wxBMP_1BPP) || (format == wxBMP_4BPP) ||
+         (format == wxBMP_8BPP) || (format == wxBMP_8BPP_PALETTE))

     {
     {

-        if (verbose)
-            wxLogError( _("BMP: Image height > 32767 pixels for file.") );
-        return FALSE;
+        // make a new palette and quantize the image
+        if (format != wxBMP_8BPP_PALETTE)
+        {
+            q_image = new wxImage();
+
+            // I get a delete error using Quantize when desired colors > 236
+            int quantize = ((palette_size > 236) ? 236 : palette_size);
+            // fill the destination too, it gives much nicer 4bpp images
+            wxQuantize::Quantize( *image, *q_image, &palette, quantize, 0,
+                                  wxQUANTIZE_FILL_DESTINATION_IMAGE );
+        }
+        else
+        {
+#if wxUSE_PALETTE
+            palette = new wxPalette(image->GetPalette());
+#endif // wxUSE_PALETTE
+        }
+
+        int i;
+        unsigned char r, g, b;
+        rgbquad = new wxUint8 [palette_size*4];
+
+        for (i=0; i<palette_size; i++)
+        {
+#if wxUSE_PALETTE
+            if (!palette->GetRGB( i, &r, &g, &b ))
+#endif // wxUSE_PALETTE
+                r = g = b = 0;
+
+            rgbquad[i*4] = b;
+            rgbquad[i*4+1] = g;
+            rgbquad[i*4+2] = r;
+            rgbquad[i*4+3] = 0;
+        }

     }
     }

+    // make a 256 entry greyscale colormap or 2 entry black & white
+    else if ((format == wxBMP_8BPP_GREY) || (format == wxBMP_8BPP_RED) ||
+             (format == wxBMP_1BPP_BW))
+    {
+        int i;
+        rgbquad = new wxUint8 [palette_size*4];

 
 

-    stream.Read( &aWord, 2 );
-/*
-    TODO
-    int planes = (int)wxUINT16_SWAP_ON_BE( aWord );
-*/
-    stream.Read( &aWord, 2 );
-    int bpp = (int)wxUINT16_SWAP_ON_BE( aWord );
-    if (bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32)
+        for (i=0; i<palette_size; i++)
+        {
+            // if 1BPP_BW then just 0 and 255 then exit
+            if (( i > 0) && (format == wxBMP_1BPP_BW)) i = 255;
+            rgbquad[i*4] = i;
+            rgbquad[i*4+1] = i;
+            rgbquad[i*4+2] = i;
+            rgbquad[i*4+3] = 0;
+        }
+    }
+
+    // if the colormap was made, then it needs to be written
+    if (rgbquad)

     {
     {

-        if (verbose)
-            wxLogError( _("BMP: Unknown bitdepth in file.") );
-        return FALSE;
+        if (!stream.Write(rgbquad, palette_size*4))
+        {
+            if (verbose)
+                wxLogError(_("BMP: Couldn't write RGB color map."));
+            delete [] rgbquad;
+#if wxUSE_PALETTE
+            delete palette;
+#endif // wxUSE_PALETTE
+            delete q_image;
+            return FALSE;
+        }
+        delete []rgbquad;

     }
 
     }
 

-    stream.Read( dbuf, 4 * 4 );
-    int comp = (int)wxINT32_SWAP_ON_BE( dbuf[0] );
-    if (comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && comp != BI_BITFIELDS)
+    // pointer to the image data, use quantized if available
+    wxUint8 *data = (wxUint8*) image->GetData();
+    if (q_image) if (q_image->Ok()) data = (wxUint8*) q_image->GetData();
+
+    wxUint8 *buffer = new wxUint8[row_width];
+    memset(buffer, 0, row_width);
+    int y; unsigned x;
+    long int pixel;
+
+    for (y = image->GetHeight() -1 ; y >= 0; y--)

     {
     {

-        if (verbose)
-            wxLogError( _("BMP: Unknown encoding in file.") );
-        return FALSE;
+        if (format == wxBMP_24BPP)  // 3 bytes per pixel red,green,blue
+        {
+            for (x = 0; x < width; x++)
+            {
+                pixel = 3*(y*width + x);
+
+                buffer[3*x    ] = data[pixel+2];
+                buffer[3*x + 1] = data[pixel+1];
+                buffer[3*x + 2] = data[pixel];
+            }
+        }
+        else if ((format == wxBMP_8BPP) ||       // 1 byte per pixel in color
+                 (format == wxBMP_8BPP_PALETTE))
+        {
+            for (x = 0; x < width; x++)
+            {
+                pixel = 3*(y*width + x);
+#if wxUSE_PALETTE
+                buffer[x] = palette->GetPixel( data[pixel],
+                                               data[pixel+1],
+                                               data[pixel+2] );
+#else
+                // FIXME: what should this be? use some std palette maybe?
+                buffer[x] = 0;
+#endif // wxUSE_PALETTE
+            }
+        }
+        else if (format == wxBMP_8BPP_GREY) // 1 byte per pix, rgb ave to grey
+        {
+            for (x = 0; x < width; x++)
+            {
+                pixel = 3*(y*width + x);
+                buffer[x] = (wxUint8)(.299*data[pixel] +
+                                      .587*data[pixel+1] +
+                                      .114*data[pixel+2]);
+            }
+        }
+        else if (format == wxBMP_8BPP_RED) // 1 byte per pixel, red as greys
+        {
+            for (x = 0; x < width; x++)
+            {
+                buffer[x] = (wxUint8)data[3*(y*width + x)];
+            }
+        }
+        else if (format == wxBMP_4BPP) // 4 bpp in color
+        {
+            for (x = 0; x < width; x+=2)
+            {
+                pixel = 3*(y*width + x);
+
+                // fill buffer, ignore if > width
+#if wxUSE_PALETTE
+                buffer[x/2] =
+                    ((wxUint8)palette->GetPixel(data[pixel],
+                                                data[pixel+1],
+                                                data[pixel+2]) << 4) |
+                    (((x+1) > width)
+                     ? 0
+                     : ((wxUint8)palette->GetPixel(data[pixel+3],
+                                                   data[pixel+4],
+                                                   data[pixel+5]) ));
+#else
+                // FIXME: what should this be? use some std palette maybe?
+                buffer[x/2] = 0;
+#endif // wxUSE_PALETTE
+            }
+        }
+        else if (format == wxBMP_1BPP) // 1 bpp in "color"
+        {
+            for (x = 0; x < width; x+=8)
+            {
+                pixel = 3*(y*width + x);
+
+#if wxUSE_PALETTE
+                buffer[x/8] = ((wxUint8)palette->GetPixel(data[pixel], data[pixel+1], data[pixel+2]) << 7) |
+                    (((x+1) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+3], data[pixel+4], data[pixel+5]) << 6)) |
+                    (((x+2) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+6], data[pixel+7], data[pixel+8]) << 5)) |
+                    (((x+3) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+9], data[pixel+10], data[pixel+11]) << 4)) |
+                    (((x+4) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+12], data[pixel+13], data[pixel+14]) << 3)) |
+                    (((x+5) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+15], data[pixel+16], data[pixel+17]) << 2)) |
+                    (((x+6) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+18], data[pixel+19], data[pixel+20]) << 1)) |
+                    (((x+7) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+21], data[pixel+22], data[pixel+23])     ));
+#else
+                // FIXME: what should this be? use some std palette maybe?
+                buffer[x/8] = 0;
+#endif // wxUSE_PALETTE
+            }
+        }
+        else if (format == wxBMP_1BPP_BW) // 1 bpp B&W colormap from red color ONLY
+        {
+            for (x = 0; x < width; x+=8)
+            {
+                pixel = 3*(y*width + x);
+
+                buffer[x/8] =
+                                            (((wxUint8)(data[pixel]   /128.)) << 7) |
+                    ( ((x+1) > width) ? 0 : (((wxUint8)(data[pixel+3] /128.)) << 6)) |
+                    ( ((x+2) > width) ? 0 : (((wxUint8)(data[pixel+6] /128.)) << 5)) |
+                    ( ((x+3) > width) ? 0 : (((wxUint8)(data[pixel+9] /128.)) << 4)) |
+                    ( ((x+4) > width) ? 0 : (((wxUint8)(data[pixel+12]/128.)) << 3)) |
+                    ( ((x+5) > width) ? 0 : (((wxUint8)(data[pixel+15]/128.)) << 2)) |
+                    ( ((x+6) > width) ? 0 : (((wxUint8)(data[pixel+18]/128.)) << 1)) |
+                    ( ((x+7) > width) ? 0 : (((wxUint8)(data[pixel+21]/128.))     ));
+            }
+        }
+
+        if (!stream.Write(buffer, row_width))
+        {
+            if (verbose)
+                wxLogError(_("BMP: Couldn't write data."));
+            delete[] buffer;
+#if wxUSE_PALETTE
+            delete palette;
+#endif // wxUSE_PALETTE
+            delete q_image;
+            return FALSE;
+        }

     }
     }

+    delete[] buffer;
+#if wxUSE_PALETTE
+    delete palette;
+#endif // wxUSE_PALETTE
+    delete q_image;

 
 

-    stream.Read( dbuf, 4 * 2 );
-    int ncolors = (int)wxINT32_SWAP_ON_BE( 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)))
+    return TRUE;
+}
+
+
+
+#ifndef BI_RGB
+#define BI_RGB       0
+#define BI_RLE8      1
+#define BI_RLE4      2
+#endif
+
+#ifndef BI_BITFIELDS
+#define BI_BITFIELDS 3
+#endif
+
+#define poffset (line * width * 3 + column * 3)
+
+
+
+struct ICONDIRENTRY

     {
     {

-        if (verbose)
-            wxLogError( _("BMP: Encoding doesn't match bitdepth.") );
-        return FALSE;
+    wxUint8         bWidth;               // Width of the image
+    wxUint8         bHeight;              // Height of the image (times 2)
+    wxUint8         bColorCount;          // Number of colors in image (0 if >=8bpp)
+    wxUint8         bReserved;            // Reserved
+    wxUint16        wPlanes;              // Color Planes
+    wxUint16        wBitCount;            // Bits per pixel
+    wxUint32        dwBytesInRes;         // how many bytes in this resource?
+    wxUint32        dwImageOffset;        // where in the file is this image
+} ;
+
+
+struct ICONDIR
+{
+    wxUint16     idReserved;   // Reserved
+    wxUint16     idType;       // resource type (1 for icons)
+    wxUint16     idCount;      // how many images?
+} ;
+
+
+bool wxBMPHandler::DoLoadDib (wxImage * image, int width, int height, int bpp, int ncolors, int comp,
+                off_t bmpOffset, wxInputStream& stream,
+                bool verbose, bool IsBmp, bool hasPalette  )
+    {
+
+    wxInt32         aDword, rmask = 0, gmask = 0, bmask = 0;
+    int             rshift = 0, gshift = 0, bshift = 0;
+    wxInt32         dbuf[4];
+    wxInt8          bbuf[4];
+    wxUint8         aByte;
+    wxUint16        aWord;
+
+
+    // allocate space for palette if needed
+    struct _cmap
+    {
+        unsigned char r, g, b;

     }
     }

+    *cmap = NULL;
+

     if (bpp < 16)
     {
         cmap = (struct _cmap *)malloc(sizeof(struct _cmap) * ncolors);
         if (!cmap)
         {
             if (verbose)
     if (bpp < 16)
     {
         cmap = (struct _cmap *)malloc(sizeof(struct _cmap) * ncolors);
         if (!cmap)
         {
             if (verbose)

-                wxLogError( _("BMP: Couldn't allocate memory.") );
+                wxLogError( _("Loading DIB : Couldn't allocate memory.") );

             return FALSE;
         }
     }
     else
         cmap = NULL;
 
             return FALSE;
         }
     }
     else
         cmap = NULL;
 

+    // destroy existing here instead of
+    image->Destroy();

     image->Create( width, height );
     unsigned char *ptr = image->GetData();
     if (!ptr)
     {
         if (verbose)
     image->Create( width, height );
     unsigned char *ptr = image->GetData();
     if (!ptr)
     {
         if (verbose)

-            wxLogError( _("BMP: Couldn't allocate memory.") );
+            wxLogError( _("Loading DIB : Couldn't allocate memory.") );

         if (cmap)
             free(cmap);
         return FALSE;
     }
         if (cmap)
             free(cmap);
         return FALSE;
     }

-

     /*
      * Reading the palette, if it exists.
      */
     if (bpp < 16 && ncolors != 0)
     {
     /*
      * Reading the palette, if it exists.
      */
     if (bpp < 16 && ncolors != 0)
     {

+        unsigned char* r = new unsigned char[ncolors];
+        unsigned char* g = new unsigned char[ncolors];
+        unsigned char* b = new unsigned char[ncolors];

         for (int j = 0; j < ncolors; j++)
         {
         for (int j = 0; j < ncolors; j++)
         {

+            if (hasPalette)
+            {

             stream.Read( bbuf, 4 );
             cmap[j].b = bbuf[0];
             cmap[j].g = bbuf[1];
             cmap[j].r = bbuf[2];
             stream.Read( bbuf, 4 );
             cmap[j].b = bbuf[0];
             cmap[j].g = bbuf[1];
             cmap[j].r = bbuf[2];

+
+            r[j] = cmap[j].r;
+            g[j] = cmap[j].g;
+            b[j] = cmap[j].b;
+        }
+            else
+            {
+                //used in reading .ico file mask
+                r[j] = cmap[j].r = j * 255;
+                g[j] = cmap[j].g = j * 255;
+                b[j] = cmap[j].b = j * 255;
+            }

         }
         }

+
+#if wxUSE_PALETTE
+        // Set the palette for the wxImage
+        image->SetPalette(wxPalette(ncolors, r, g, b));
+#endif // wxUSE_PALETTE
+
+        delete[] r;
+        delete[] g;
+        delete[] b;

     }
     else if (bpp == 16 || bpp == 32)
     {
     }
     else if (bpp == 16 || bpp == 32)
     {


@@ -222,7 +559,8 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
     /*
      * Reading the image data
      */
     /*
      * Reading the image data
      */

-    stream.SeekI( start_offset + offset );
+    if ( IsBmp ) stream.SeekI( bmpOffset ); // else icon, just carry on
+

     unsigned char *data = ptr;
 
     /* set the whole image to the background color */
     unsigned char *data = ptr;
 
     /* set the whole image to the background color */


@@ -255,7 +593,7 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
                 if (bpp == 1)
                 {
                     int bit = 0;
                 if (bpp == 1)
                 {
                     int bit = 0;

-                    for (bit = 0; bit < 8; bit++)
+                    for (bit = 0; bit < 8 && column < width; bit++)

                     {
                         index = ((aByte & (0x80 >> bit)) ? 1 : 0);
                         ptr[poffset] = cmap[index].r;
                     {
                         index = ((aByte & (0x80 >> bit)) ? 1 : 0);
                         ptr[poffset] = cmap[index].r;


@@ -269,7 +607,7 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
                     if (comp == BI_RLE4)
                     {
                         if (verbose)
                     if (comp == BI_RLE4)
                     {
                         if (verbose)

-                            wxLogError( _("BMP: Cannot deal with 4bit encoded yet.") );
+                            wxLogError( _("DIB Header: Cannot deal with 4bit encoded yet.") );

                         image->Destroy();
                         free(cmap);
                         return FALSE;
                         image->Destroy();
                         free(cmap);
                         return FALSE;


@@ -277,7 +615,7 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
                     else
                     {
                         int nibble = 0;
                     else
                     {
                         int nibble = 0;

-                        for (nibble = 0; nibble < 2; nibble++)
+                        for (nibble = 0; nibble < 2 && column < width; nibble++)

                         {
                             index = ((aByte & (0xF0 >> nibble * 4)) >> (!nibble * 4));
                             if (index >= 16)
                         {
                             index = ((aByte & (0xF0 >> nibble * 4)) >> (!nibble * 4));
                             if (index >= 16)


@@ -333,7 +671,7 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
                         }
                         else
                         {
                         }
                         else
                         {

-                            for (int l = 0; l < first; l++)
+                            for (int l = 0; l < first && column < width; l++)

                             {
                                 ptr[poffset    ] = cmap[aByte].r;
                                 ptr[poffset + 1] = cmap[aByte].g;
                             {
                                 ptr[poffset    ] = cmap[aByte].r;
                                 ptr[poffset + 1] = cmap[aByte].g;


@@ -355,7 +693,7 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
                }
                else if (bpp == 24)
                {
                }
                else if (bpp == 24)
                {

-                   stream.Read( &bbuf, 3 );
+                   stream.Read( bbuf, 3 );

                    linepos += 3;
                    ptr[poffset    ] = (unsigned char)bbuf[2];
                    ptr[poffset + 1] = (unsigned char)bbuf[1];
                    linepos += 3;
                    ptr[poffset    ] = (unsigned char)bbuf[2];
                    ptr[poffset + 1] = (unsigned char)bbuf[1];


@@ -404,18 +742,204 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
 
      image->SetMask( FALSE );
 
 
      image->SetMask( FALSE );
 

+    return stream.IsOk();
+}
+
+
+bool wxBMPHandler::LoadDib( wxImage *image, wxInputStream& stream, bool verbose, bool IsBmp  )
+{
+    wxUint16        aWord;
+    wxInt32         dbuf[4];
+    wxInt8          bbuf[4];
+    off_t           offset;
+
+    offset = 0; // keep gcc quiet
+    if ( IsBmp )
+    {
+        // read the header off the .BMP format file
+
+        offset = stream.TellI();
+        if (offset == wxInvalidOffset) offset = 0;
+
+        stream.Read( bbuf, 2 );
+
+        stream.Read( dbuf, 16  );
+    }
+    else
+    {
+        stream.Read( dbuf, 4  );
+    }
+    #if 0 // unused
+        wxInt32 size = wxINT32_SWAP_ON_BE( dbuf[0] );
+    #endif
+    offset = offset + wxINT32_SWAP_ON_BE( dbuf[2] );
+
+    stream.Read(dbuf, 4 * 2);
+    int width = (int)wxINT32_SWAP_ON_BE( dbuf[0] );
+    int height = (int)wxINT32_SWAP_ON_BE( dbuf[1] );
+    if ( !IsBmp ) height = height  / 2; // for icons divide by 2
+        
+    if (width > 32767)
+    {
+        if (verbose)
+            wxLogError( _("DIB Header: Image width > 32767 pixels for file.") );
+        return FALSE;
+    }
+    if (height > 32767)
+    {
+        if (verbose)
+            wxLogError( _("DIB Header: Image height > 32767 pixels for file.") );
+        return FALSE;
+    }
+
+    stream.Read( &aWord, 2 );
+    /*
+            TODO
+            int planes = (int)wxUINT16_SWAP_ON_BE( aWord );
+        */
+    stream.Read( &aWord, 2 );
+    int bpp = (int)wxUINT16_SWAP_ON_BE( aWord );
+    if (bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32)
+    {
+        if (verbose)
+            wxLogError( _("DIB Header: Unknown bitdepth in file.") );
+        return FALSE;
+    }
+
+    stream.Read( dbuf, 4 * 4 );
+    int comp = (int)wxINT32_SWAP_ON_BE( dbuf[0] );
+    if (comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && comp != BI_BITFIELDS)
+    {
+        if (verbose)
+            wxLogError( _("DIB Header: Unknown encoding in file.") );
+        return FALSE;
+    }
+
+    stream.Read( dbuf, 4 * 2 );
+    int ncolors = (int)wxINT32_SWAP_ON_BE( 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)))
+    {
+        if (verbose)
+            wxLogError( _("DIB Header: Encoding doesn't match bitdepth.") );
+        return FALSE;
+    }
+
+    //read DIB; this is the BMP image or the XOR part of an icon image
+    if (!DoLoadDib (image, width, height, bpp, ncolors, comp, offset, stream,
+        verbose, IsBmp, TRUE ) )
+    {
+        if (verbose)
+            wxLogError( _("Error in reading image DIB .") );
+        return FALSE;
+    }
+
+    if ( !IsBmp )
+    {
+        //read Icon mask which is monochrome
+        //there is no palette, so we will create one
+        wxImage mask;
+        if (!DoLoadDib (&mask, width, height, 1, 2, BI_RGB, offset, stream,
+            verbose, IsBmp, FALSE ) )
+        {
+            if (verbose)
+                wxLogError( _("ICO: Error in reading mask DIB.") );
+            return FALSE;
+        }
+        image->SetMaskFromImage(mask, 255, 255, 255);
+
+    }

      return TRUE;
 }
 
      return TRUE;
 }
 

+
+bool wxBMPHandler::LoadFile ( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) )
+{
+    bool IsBmp = TRUE;
+    //Read a single DIB fom the file
+    return LoadDib ( image, stream, verbose, IsBmp ) ;
+}
+
+
+
+bool wxICOHandler::LoadFile ( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) )
+{
+    bool bResult = FALSE ;
+    bool IsBmp = FALSE;
+
+    ICONDIR m_IconDir ;
+    stream.Read (&m_IconDir, sizeof(m_IconDir));
+    wxUint16 nIcons = wxUINT16_SWAP_ON_BE ( m_IconDir.idCount ) ;
+
+    //loop round the icons and choose the best one
+    ICONDIRENTRY * pIconDirEntry = new ICONDIRENTRY [nIcons];
+    ICONDIRENTRY * pCurrentEntry = pIconDirEntry ;
+    int i ;
+    int wMax = 0 ;
+    int colmax = 0 ;
+    int iSel = wxNOT_FOUND ;
+    for (i=0; i < nIcons ; i++ )
+    {
+        stream.Read(pCurrentEntry, sizeof(ICONDIRENTRY));
+        //bHeight and bColorCount are wxUint8
+        if (pCurrentEntry->bWidth >= wMax )
+        {
+            // see if we have more colors, ==0 indicates > 8bpp
+            if (pCurrentEntry->bColorCount == 0 ) pCurrentEntry->bColorCount = 255 ;
+            if (pCurrentEntry->bColorCount >= colmax)
+            {                
+                iSel = i ;
+                wMax =  pCurrentEntry->bWidth ;
+                colmax = pCurrentEntry->bColorCount ;
+            }
+        }
+        pCurrentEntry ++ ;
+    }
+    if (iSel == wxNOT_FOUND)
+    {
+        bResult = FALSE;
+    }
+    else
+    {
+        //seek to selected icon
+        pCurrentEntry = pIconDirEntry + iSel ;
+        stream.SeekI (wxUINT32_SWAP_ON_BE ( pCurrentEntry -> dwImageOffset ), wxFromStart ) ;
+        bResult = LoadDib ( image,  stream, TRUE, IsBmp );
+    }
+    delete [] pIconDirEntry  ;
+    return bResult
+    ;
+}
+
+bool wxICOHandler::SaveFile(wxImage *image,
+                            wxOutputStream& stream,
+                            bool verbose)
+{
+    return FALSE ;
+}
+

 bool wxBMPHandler::DoCanRead( wxInputStream& stream )
 {
     unsigned char hdr[2];
 
 bool wxBMPHandler::DoCanRead( wxInputStream& stream )
 {
     unsigned char hdr[2];
 

-    stream.Read(&hdr, 2);
+    stream.Read(hdr, 2);

     stream.SeekI(-2, wxFromCurrent);
     return (hdr[0] == 'B' && hdr[1] == 'M');
 }
 
     stream.SeekI(-2, wxFromCurrent);
     return (hdr[0] == 'B' && hdr[1] == 'M');
 }
 

-#endif // wxUSE_STREAMS
+bool wxICOHandler::DoCanRead( wxInputStream& stream )
+{
+    unsigned char hdr[4];
+
+    stream.Read(hdr, 4);
+    stream.SeekI(-4, wxFromCurrent);
+    return (hdr[0] == '\0' && hdr[1] == '\0' && hdr[2] == '\1' && hdr[3] == '\0');
+}

 
 

+#endif // wxUSE_STREAMS

 
 

+#endif // wxUSE_IMAGE