X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b11e8fb66699444389254085844a8084de9f0680..88594d02eb59a55ac85d3210a49d02918124617b:/src/common/imagbmp.cpp?ds=inline diff --git a/src/common/imagbmp.cpp b/src/common/imagbmp.cpp index 6a09a824fa..2b77f5aa93 100644 --- a/src/common/imagbmp.cpp +++ b/src/common/imagbmp.cpp @@ -47,7 +47,7 @@ #endif //----------------------------------------------------------------------------- -// wxBMPHandler +// wxBMPHandler & wxICOHandler //----------------------------------------------------------------------------- IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler) @@ -56,9 +56,224 @@ 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 + +#define poffset (line * width * 3 + column * 3) + + + +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? +} ; + +bool wxICOHandler::SaveFile(wxImage *image, + wxOutputStream& stream, + bool verbose) + +{ + bool bResult = FALSE ; + //sanity check; icon must be less than 127 pixels high and 255 wide + if (image -> GetHeight () > 127 ) + { + if (verbose) + wxLogError( _("ICO: Error Image too tall for an icon.") ); + return FALSE; + } + if (image -> GetWidth () > 255 ) + { + if (verbose) + wxLogError( _("ICO: Error Image too wide for an icon.") ); + return FALSE; + } + + // only generate one image + int m_images = 1 ; + + // write a header, (ICONDIR) + // Calculate the header size + wxUint32 m_offset = 3 * sizeof(wxUint16); + + ICONDIR m_IconDir ; + m_IconDir.idReserved = 0 ; + m_IconDir.idType = wxUINT16_SWAP_ON_BE (1); + m_IconDir.idCount = wxUINT16_SWAP_ON_BE (m_images); + stream.Write(&m_IconDir.idReserved, sizeof(m_IconDir.idReserved)); + stream.Write(&m_IconDir.idType, sizeof(m_IconDir.idType)); + stream.Write(&m_IconDir.idCount, sizeof(m_IconDir.idCount)); + if ( !stream.IsOk () ) + { + if (verbose) + wxLogError( _("ICO: Error writing ICONDIR header.") ); + return FALSE; + } + + // for each iamage write a description ICONDIRENTRY + ICONDIRENTRY m_icondirentry ; + int i ; + for ( i = 0; i < m_images; i++ ) + { + wxImage mask ; + if (image->HasMask()) + { + //make another image with black/white + mask = image -> ConvertToMono (image->GetMaskRed(), image->GetMaskGreen(), image->GetMaskBlue() ); + //now we need to change the masked regions to black + unsigned char r = image -> GetMaskRed() ; + unsigned char g = image -> GetMaskGreen() ; + unsigned char b = image -> GetMaskBlue() ; + if ((r != 0) || (g != 0) || (b != 0) ) + { + //Go round and apply black to the masked bits + int i,j; + for (i=0; i < mask.GetWidth(); i++) + for (j=0; j < mask.GetHeight(); j++) + { + if ((r == mask.GetRed(i, j)) && + (g == mask.GetGreen(i, j) ) && + (b == mask.GetBlue(i, j)) ) + image -> SetRGB ( i, j, 0, 0, 0 ); + } + + } + } + else + { + // just make a black mask all over + mask = image -> Copy (); + int i,j; + for (i=0; i < mask.GetWidth(); i++) + for (j=0; j < mask.GetHeight(); j++) + mask.SetRGB ( i, j, 0, 0, 0 ); + } + //Set the formats for image and mask + // windows never saves with more than 8 colors + image -> SetOption (wxBMP_FORMAT, wxBMP_8BPP); + // monochome bitmap + mask . SetOption (wxBMP_FORMAT, wxBMP_1BPP_BW); + bool IsBmp = FALSE ; + bool IsMask = FALSE ; + + //calculate size and offset of image and mask + wxCountingOutputStream cStream ; + bResult = SaveDib ( image, cStream, verbose, IsBmp, IsMask ) ; + if (!bResult) + { + if (verbose) + wxLogError( _("ICO: Error calculating size of XOR DIB .") ); + return FALSE; + } + IsMask = TRUE ; + bResult = SaveDib ( &mask, cStream, verbose, IsBmp, IsMask ) ; + if (!bResult) + { + if (verbose) + wxLogError( _("ICO: Error calculating size of Mask DIB .") ); + return FALSE; + } + wxUint32 m_Size = cStream.GetSize(); + + // wxCountingOutputStream::Ok() always returns TRUE for now and this + // "if" provokes VC++ warnings in optimized build +#if 0 + if (!cStream.Ok()) + { + if (verbose) + wxLogError( _("ICO: Error calculating size of DIB .") ); + return FALSE; + } +#endif // 0 + + m_offset = m_offset + sizeof(ICONDIRENTRY) ; + + m_icondirentry. bWidth = image -> GetWidth () ; + m_icondirentry. bHeight = 2 * image -> GetHeight () ; + m_icondirentry. bColorCount = 0 ; + m_icondirentry. bReserved = 0 ; + m_icondirentry. wPlanes = wxUINT16_SWAP_ON_BE(1); + m_icondirentry. wBitCount = wxUINT16_SWAP_ON_BE(wxBMP_8BPP) ; + m_icondirentry. dwBytesInRes = wxUINT32_SWAP_ON_BE(m_Size); + m_icondirentry. dwImageOffset = wxUINT32_SWAP_ON_BE(m_offset); + + //increase size to allow for the data wriitten + m_offset = m_offset + m_Size ; + + //write to stream + stream.Write(&m_icondirentry. bWidth, sizeof(m_icondirentry. bWidth) ); + stream.Write(&m_icondirentry. bHeight, sizeof(m_icondirentry. bHeight) ); + stream.Write(&m_icondirentry. bColorCount, sizeof(m_icondirentry. bColorCount) ); + stream.Write(&m_icondirentry. bReserved, sizeof(m_icondirentry. bReserved) ); + stream.Write(&m_icondirentry. wPlanes, sizeof(m_icondirentry. wPlanes) ); + stream.Write(&m_icondirentry. wBitCount, sizeof(m_icondirentry. wBitCount) ); + stream.Write(&m_icondirentry. dwBytesInRes, sizeof(m_icondirentry. dwBytesInRes) ); + stream.Write(&m_icondirentry. dwImageOffset, sizeof(m_icondirentry. dwImageOffset) ); + if ( !stream.IsOk () ) + { + if (verbose) + wxLogError( _("ICO: Error writing ICONDIRENTRY header.") ); + return FALSE; + } + //actually save it + IsMask = FALSE ; + bResult = SaveDib ( image, stream, verbose, IsBmp, IsMask ) ; + if (!bResult) + { + if (verbose) + wxLogError( _("ICO: Error writing XOR DIB .") ); + return FALSE; + } + IsMask = TRUE ; + bResult = SaveDib ( &mask, stream, verbose, IsBmp, IsMask ) ; + if (!bResult) + { + if (verbose) + wxLogError( _("ICO: Error writing Mask DIB .") ); + return FALSE; + } + + } // end of for loop + return TRUE ; +} + + bool wxBMPHandler::SaveFile(wxImage *image, wxOutputStream& stream, bool verbose) +{ + bool IsBmp = TRUE; + bool IsMask = FALSE ; + return SaveDib( image, stream, verbose, IsBmp, IsMask ) ; +} + +bool wxBMPHandler::SaveDib(wxImage *image, + wxOutputStream& stream, + bool verbose, + bool IsBmp, + bool IsMask) + { wxCHECK_MSG( image, FALSE, _T("invalid pointer in wxBMPHandler::SaveFile") ); @@ -145,7 +360,14 @@ bool wxBMPHandler::SaveFile(wxImage *image, hdr.bih_size = wxUINT32_SWAP_ON_BE(hdr_size - 14); hdr.width = wxUINT32_SWAP_ON_BE(image->GetWidth()); + if (IsBmp) + { hdr.height = wxUINT32_SWAP_ON_BE(image->GetHeight()); + } + else + { + hdr.height = wxUINT32_SWAP_ON_BE(2 * image->GetHeight()); + } hdr.planes = wxUINT16_SWAP_ON_BE(1); // always 1 plane hdr.bpp = wxUINT16_SWAP_ON_BE(bpp); hdr.compression = 0; // RGB uncompressed @@ -154,13 +376,25 @@ bool wxBMPHandler::SaveFile(wxImage *image, hdr.num_clrs = wxUINT32_SWAP_ON_BE(palette_size); // # colors in colormap hdr.num_signif_clrs = 0; // all colors are significant + if (IsBmp) + { 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.data_offset, 4) + ) + { + if (verbose) + wxLogError(_("BMP: Couldn't write the file (Bitmap) header.")); + return FALSE; + } + } + if (!IsMask) + { + if ( !stream.Write(&hdr.bih_size, 4) || !stream.Write(&hdr.width, 4) || !stream.Write(&hdr.height, 4) || @@ -175,9 +409,10 @@ bool wxBMPHandler::SaveFile(wxImage *image, ) { if (verbose) - wxLogError(_("BMP: Couldn't write the file header.")); + wxLogError(_("BMP: Couldn't write the file (BitmapInfo) header.")); return FALSE; } + } wxPalette *palette = NULL; // entries for quantized images wxUint8 *rgbquad = NULL; // for the RGBQUAD bytes for the colormap @@ -243,6 +478,8 @@ bool wxBMPHandler::SaveFile(wxImage *image, // if the colormap was made, then it needs to be written if (rgbquad) { + if (!IsMask) + { if (!stream.Write(rgbquad, palette_size*4)) { if (verbose) @@ -254,6 +491,7 @@ bool wxBMPHandler::SaveFile(wxImage *image, delete q_image; return FALSE; } + } delete []rgbquad; } @@ -397,123 +635,52 @@ bool wxBMPHandler::SaveFile(wxImage *image, -#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) +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 ) + { -bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) ) -{ + wxInt32 aDword, rmask = 0, gmask = 0, bmask = 0; 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 ); + wxUint8 aByte; + wxUint16 aWord; -#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) - { - if (verbose) - wxLogError( _("BMP: Image width > 32767 pixels for file.") ); - return FALSE; - } - if (height > 32767) + // allocate space for palette if needed + struct _cmap { - 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; - } - - 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; + unsigned char r, g, b; } + *cmap = NULL; - 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( _("BMP: Encoding doesn't match bitdepth.") ); - return FALSE; - } 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. */ @@ -524,6 +691,8 @@ 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]; @@ -533,6 +702,14 @@ 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 @@ -586,7 +763,8 @@ 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 */ @@ -633,7 +811,7 @@ 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; @@ -768,9 +946,179 @@ 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 wxBMPHandler::DoCanRead( wxInputStream& stream ) { unsigned char hdr[2]; @@ -780,6 +1128,15 @@ 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