X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1971d23c57b3c582f32d05704914ad902ec76fa5..50d0b061eeeb4f87594ccea7508a7c5975fb36dd:/src/common/imagbmp.cpp

diff --git a/src/common/imagbmp.cpp b/src/common/imagbmp.cpp
index 68fdf8cd71..bb388134af 100644
--- a/src/common/imagbmp.cpp
+++ b/src/common/imagbmp.cpp
@@ -91,7 +91,11 @@ bool wxBMPHandler::SaveFile(wxImage *image,
              (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) && !image->HasPalette())
+        if ((format == wxBMP_8BPP_PALETTE)
+#if wxUSE_PALETTE
+                && !image->HasPalette()
+#endif // wxUSE_PALETTE
+            )
         {
             if (verbose)
                 wxLogError(_("BMP: wImage doesn't have own wxPalette."));
@@ -196,7 +200,9 @@ bool wxBMPHandler::SaveFile(wxImage *image,
         }
         else
         {
+#if wxUSE_PALETTE
             palette = new wxPalette(image->GetPalette());
+#endif // wxUSE_PALETTE
         }
 
         int i;
@@ -205,7 +211,10 @@ bool wxBMPHandler::SaveFile(wxImage *image,
 
         for (i=0; i<palette_size; i++)
         {
-            if (!palette->GetRGB( i, &r, &g, &b )) r = g = b = 0;
+#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;
@@ -236,10 +245,13 @@ bool wxBMPHandler::SaveFile(wxImage *image,
     {
         if (!stream.Write(rgbquad, palette_size*4))
         {
-            if (verbose) wxLogError(_("BMP: Couldn't write RGB color map."));
-            delete []rgbquad;
-            if (palette) delete palette;
-            if (q_image) delete q_image;
+            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;
@@ -273,9 +285,14 @@ bool wxBMPHandler::SaveFile(wxImage *image,
             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
@@ -302,9 +319,20 @@ bool wxBMPHandler::SaveFile(wxImage *image,
                 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]) ));
+                    ((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"
@@ -313,8 +341,8 @@ bool wxBMPHandler::SaveFile(wxImage *image,
             {
                 pixel = 3*(y*width + x);
 
-                buffer[x/8] =
-                                           ((wxUint8)palette->GetPixel(data[pixel], data[pixel+1], data[pixel+2]) << 7) |
+#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)) |
@@ -322,6 +350,10 @@ bool wxBMPHandler::SaveFile(wxImage *image,
                     (((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
@@ -347,14 +379,18 @@ bool wxBMPHandler::SaveFile(wxImage *image,
             if (verbose)
                 wxLogError(_("BMP: Couldn't write data."));
             delete[] buffer;
-            if (palette) delete palette;
-            if (q_image) delete q_image;
+#if wxUSE_PALETTE
+            delete palette;
+#endif // wxUSE_PALETTE
+            delete q_image;
             return FALSE;
         }
     }
     delete[] buffer;
-    if (palette) delete palette;
-    if (q_image) delete q_image;
+#if wxUSE_PALETTE
+    delete palette;
+#endif // wxUSE_PALETTE
+    delete q_image;
 
     return TRUE;
 }
@@ -373,111 +409,74 @@ bool wxBMPHandler::SaveFile(wxImage *image,
 
 #define poffset (line * width * 3 + column * 3)
 
-bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) )
-{
-    int             rshift = 0, gshift = 0, bshift = 0;
-    wxUint8         aByte;
-    wxUint16        aWord;
-    wxInt32         dbuf[4];
-	wxInt32         aDword, rmask = 0, gmask = 0, bmask = 0;
-    wxInt8          bbuf[4];
-    struct _cmap {
-        unsigned char r, g, b;
-    } *cmap = NULL;
-
-    off_t start_offset = stream.TellI();
-    if (start_offset == wxInvalidOffset) start_offset = 0;
-
-    image->Destroy();
 
-    /*
-     * Read the BMP header
-     */
 
-    stream.Read( bbuf, 2 );
-    stream.Read( dbuf, 4 * 4 );
+struct ICONDIRENTRY
+    {
+    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?
+} ;
 
-#if 0 // unused
-    wxInt32 size = wxINT32_SWAP_ON_BE( dbuf[0] );
-#endif
-    wxInt32 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 (width > 32767)
+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  )
     {
-        if (verbose)
-            wxLogError( _("BMP: Image width > 32767 pixels for file.") );
-        return FALSE;
-    }
-    if (height > 32767)
-    {
-        if (verbose)
-            wxLogError( _("BMP: 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( _("BMP: Unknown bitdepth in file.") );
-        return FALSE;
-    }
+    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;
 
-    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( _("BMP: 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)))
+    // allocate space for palette if needed
+    struct _cmap
     {
-        if (verbose)
-            wxLogError( _("BMP: Encoding doesn't match bitdepth.") );
-        return FALSE;
+        unsigned char r, g, b;
     }
+    *cmap = NULL;
+
     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;
 
+    // destroy existing here instead of
+    image->Destroy();
     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;
     }
-
     /*
      * Reading the palette, if it exists.
      */
@@ -488,6 +487,8 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
         unsigned char* b = new unsigned char[ncolors];
         for (int j = 0; j < ncolors; j++)
         {
+            if (hasPalette)
+            {
             stream.Read( bbuf, 4 );
             cmap[j].b = bbuf[0];
             cmap[j].g = bbuf[1];
@@ -497,8 +498,19 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
             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;
@@ -547,7 +559,8 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
     /*
      * 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 */
@@ -594,7 +607,7 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool 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;
@@ -729,9 +742,186 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
 
      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;
 }
 
+
+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];
@@ -741,6 +931,15 @@ bool wxBMPHandler::DoCanRead( wxInputStream& stream )
     return (hdr[0] == 'B' && hdr[1] == 'M');
 }
 
+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