changed wxCreateGreyedImage() to respect the original image mask

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

diff --git a/src/common/imagbmp.cpp b/src/common/imagbmp.cpp
index e3e9cb67ad4c043911044b822c2dd10631406a6f..6e4168e0f006041308876fcaeac15d0fd31ed75f 100644 (file)
--- a/src/common/imagbmp.cpp
+++ b/src/common/imagbmp.cpp
@@ -273,16 +273,16 @@ bool wxBMPHandler::SaveDib(wxImage *image,
     else if ( (format == wxBMP_8BPP_GREY) || (format == wxBMP_8BPP_RED) ||
               (format == wxBMP_1BPP_BW) )
     {
-        int i;
         rgbquad = new wxUint8 [palette_size*4];
 
-        for (i = 0; i < palette_size; i++)
+        for ( int 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;
+            // if 1BPP_BW then the value should be either 0 or 255
+            wxUint8 c = (wxUint8)((i > 0) && (format == wxBMP_1BPP_BW) ? 255 : i);
+
+            rgbquad[i*4] =
+            rgbquad[i*4+1] =
+            rgbquad[i*4+2] = c;
             rgbquad[i*4+3] = 0;
         }
     }
@@ -336,9 +336,9 @@ bool wxBMPHandler::SaveDib(wxImage *image,
             {
                 pixel = 3*(y*width + x);
 #if wxUSE_PALETTE
-                buffer[x] = palette->GetPixel( data[pixel],
-                                               data[pixel+1],
-                                               data[pixel+2] );
+                buffer[x] = (wxUint8)palette->GetPixel( data[pixel],
+                                                        data[pixel+1],
+                                                        data[pixel+2] );
 #else
                 // FIXME: what should this be? use some std palette maybe?
                 buffer[x] = 0;
@@ -370,7 +370,7 @@ bool wxBMPHandler::SaveDib(wxImage *image,
 
                 // fill buffer, ignore if > width
 #if wxUSE_PALETTE
-                buffer[x/2] =
+                buffer[x/2] = (wxUint8)(
                     ((wxUint8)palette->GetPixel(data[pixel],
                                                 data[pixel+1],
                                                 data[pixel+2]) << 4) |
@@ -378,7 +378,7 @@ bool wxBMPHandler::SaveDib(wxImage *image,
                      ? 0
                      : ((wxUint8)palette->GetPixel(data[pixel+3],
                                                    data[pixel+4],
-                                                   data[pixel+5]) ));
+                                                   data[pixel+5]) ))    );
 #else
                 // FIXME: what should this be? use some std palette maybe?
                 buffer[x/2] = 0;
@@ -392,14 +392,15 @@ bool wxBMPHandler::SaveDib(wxImage *image,
                 pixel = 3*(y*width + x);
 
 #if wxUSE_PALETTE
-                buffer[x/8] = ((wxUint8)palette->GetPixel(data[pixel], data[pixel+1], data[pixel+2]) << 7) |
+                buffer[x/8] = (wxUint8)(
+                                           ((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])     ));
+                    (((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;
@@ -412,7 +413,7 @@ bool wxBMPHandler::SaveDib(wxImage *image,
             {
                 pixel = 3*(y*width + x);
 
-                buffer[x/8] =
+                buffer[x/8] = (wxUint8)(
                                           (((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)) |
@@ -420,7 +421,7 @@ bool wxBMPHandler::SaveDib(wxImage *image,
                    (((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.))     ));
+                   (((x+7) > width) ? 0 : (((wxUint8)(data[pixel+21]/128.))     ))    );
             }
         }
 
@@ -453,7 +454,7 @@ typedef struct
 
 bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
                              int bpp, int ncolors, int comp,
-                             off_t bmpOffset, wxInputStream& stream,
+                             wxFileOffset bmpOffset, wxInputStream& stream,
                              bool verbose, bool IsBmp, bool hasPalette)
 {
     wxInt32         aDword, rmask = 0, gmask = 0, bmask = 0;
@@ -517,9 +518,9 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
             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;
+                r[j] = cmap[j].r =
+                g[j] = cmap[j].g =
+                b[j] = cmap[j].b = ( j ? 255 : 0 );
             }
         }
 
@@ -669,8 +670,8 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
                                     {
                                         ++readBytes ;
                                         aByte = stream.GetC();
-                                        nibble[0] = ( (aByte & 0xF0) >> 4 ) ;
-                                        nibble[1] = ( aByte & 0x0F ) ;
+                                        nibble[0] = (wxUint8)( (aByte & 0xF0) >> 4 ) ;
+                                        nibble[1] = (wxUint8)( aByte & 0x0F ) ;
                                     }
                                     ptr[poffset    ] = cmap[nibble[k%2]].r;
                                     ptr[poffset + 1] = cmap[nibble[k%2]].g;
@@ -686,8 +687,8 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
                         else
                         {
                             wxUint8 nibble[2] ;
-                            nibble[0] = ( (aByte & 0xF0) >> 4 ) ;
-                            nibble[1] = ( aByte & 0x0F ) ;
+                            nibble[0] = (wxUint8)( (aByte & 0xF0) >> 4 ) ;
+                            nibble[1] = (wxUint8)( aByte & 0x0F ) ;
 
                             for ( int l = 0; l < first && column < width; l++ )
                             {
@@ -797,11 +798,11 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
                    to retrieve the color data out of the word.  Then
                    shift it left by (8 - number of bits) such that
                    the image has the proper dynamic range */
-                temp = (aWord & rmask) >> rshift << (8-rbits);
+                temp = (unsigned char)((aWord & rmask) >> rshift << (8-rbits));
                 ptr[poffset] = temp;
-                temp = (aWord & gmask) >> gshift << (8-gbits);
+                temp = (unsigned char)((aWord & gmask) >> gshift << (8-gbits));
                 ptr[poffset + 1] = temp;
-                temp = (aWord & bmask) >> bshift << (8-bbits);
+                temp = (unsigned char)((aWord & bmask) >> bshift << (8-bbits));
                 ptr[poffset + 2] = temp;
                 column++;
             }
@@ -811,11 +812,11 @@ bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height,
                 stream.Read(&aDword, 4);
                 aDword = wxINT32_SWAP_ON_BE(aDword);
                 linepos += 4;
-                temp = (aDword & rmask) >> rshift;
+                temp = (unsigned char)((aDword & rmask) >> rshift);
                 ptr[poffset] = temp;
-                temp = (aDword & gmask) >> gshift;
+                temp = (unsigned char)((aDword & gmask) >> gshift);
                 ptr[poffset + 1] = temp;
-                temp = (aDword & bmask) >> bshift;
+                temp = (unsigned char)((aDword & bmask) >> bshift);
                 ptr[poffset + 2] = temp;
                 column++;
             }
@@ -843,15 +844,15 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
     wxUint16        aWord;
     wxInt32         dbuf[4];
     wxInt8          bbuf[4];
-    off_t           offset;
 
-    offset = 0; // keep gcc quiet
+    wxFileOffset offset = 0; // keep gcc quiet
     if ( IsBmp )
     {
         // read the header off the .BMP format file
 
         offset = stream.TellI();
-        if (offset == wxInvalidOffset) offset = 0;
+        if (offset == wxInvalidOffset)
+            offset = 0;
 
         stream.Read(bbuf, 2);
         stream.Read(dbuf, 16);
@@ -866,8 +867,8 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
     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]);
+    int width = wxINT32_SWAP_ON_BE((int)dbuf[0]);
+    int height = wxINT32_SWAP_ON_BE((int)dbuf[1]);
     if ( !IsBmp)height = height  / 2; // for icons divide by 2
 
     if ( width > 32767 )
@@ -889,7 +890,7 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
             int planes = (int)wxUINT16_SWAP_ON_BE( aWord );
         */
     stream.Read(&aWord, 2);
-    int bpp = (int)wxUINT16_SWAP_ON_BE(aWord);
+    int bpp = wxUINT16_SWAP_ON_BE((int)aWord);
     if ( bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32 )
     {
         if (verbose)
@@ -898,7 +899,7 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
     }
 
     stream.Read(dbuf, 4 * 4);
-    int comp = (int)wxINT32_SWAP_ON_BE(dbuf[0]);
+    int comp = wxINT32_SWAP_ON_BE((int)dbuf[0]);
     if ( comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 &&
          comp != BI_BITFIELDS )
     {
@@ -908,7 +909,7 @@ bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream,
     }
 
     stream.Read(dbuf, 4 * 2);
-    int ncolors = (int)wxINT32_SWAP_ON_BE( dbuf[0] );
+    int ncolors = wxINT32_SWAP_ON_BE( (int)dbuf[0] );
     if (ncolors == 0)
         ncolors = 1 << bpp;
     /* some more sanity checks */
@@ -1036,8 +1037,8 @@ bool wxICOHandler::SaveFile(wxImage *image,
 
     ICONDIR IconDir;
     IconDir.idReserved = 0;
-    IconDir.idType = wxUINT16_SWAP_ON_BE(type);
-    IconDir.idCount = wxUINT16_SWAP_ON_BE(images);
+    IconDir.idType = wxUINT16_SWAP_ON_BE((wxUint16)type);
+    IconDir.idCount = wxUINT16_SWAP_ON_BE((wxUint16)images);
     stream.Write(&IconDir.idReserved, sizeof(IconDir.idReserved));
     stream.Write(&IconDir.idType, sizeof(IconDir.idType));
     stream.Write(&IconDir.idCount, sizeof(IconDir.idCount));
@@ -1130,8 +1131,8 @@ bool wxICOHandler::SaveFile(wxImage *image,
 
         offset = offset + sizeof(ICONDIRENTRY);
 
-        icondirentry.bWidth = image->GetWidth();
-        icondirentry.bHeight = 2 * image->GetHeight();
+        icondirentry.bWidth = (wxUint8)image->GetWidth();
+        icondirentry.bHeight = (wxUint8)(2 * image->GetHeight());
         icondirentry.bColorCount = 0;
         icondirentry.bReserved = 0;
         icondirentry.wPlanes = wxUINT16_SWAP_ON_BE(1);
@@ -1210,7 +1211,7 @@ bool wxICOHandler::DoLoadFile(wxImage *image, wxInputStream& stream,
 
     ICONDIR IconDir;
 
-    off_t iPos = stream.TellI();
+    wxFileOffset iPos = stream.TellI();
     stream.Read(&IconDir, sizeof(IconDir));
     wxUint16 nIcons = wxUINT16_SWAP_ON_BE(IconDir.idCount);
     // nType is 1 for Icons, 2 for Cursors:
@@ -1275,7 +1276,7 @@ bool wxICOHandler::DoLoadFile(wxImage *image, wxInputStream& stream,
 int wxICOHandler::GetImageCount(wxInputStream& stream)
 {
     ICONDIR IconDir;
-    off_t iPos = stream.TellI();
+    wxFileOffset iPos = stream.TellI();
     stream.SeekI(0);
     stream.Read(&IconDir, sizeof(IconDir));
     wxUint16 nIcons = wxUINT16_SWAP_ON_BE(IconDir.idCount);