dec 9, 1998 wxImage related changes
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1141 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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@ -30,6 +30,7 @@
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#include "wx/bitmap.h"
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#include "wx/icon.h"
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#endif
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#include "wx/image.h"
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#include "wx/msw/private.h"
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#include "wx/log.h"
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@ -76,8 +77,9 @@ wxBitmapRefData::~wxBitmapRefData(void)
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m_hBitmap = 0 ;
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if (m_bitmapMask)
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delete m_bitmapMask;
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// delete m_bitmapMask; // this line cause an exception
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m_bitmapMask = NULL;
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}
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wxList wxBitmap::sm_handlers;
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@ -941,3 +943,230 @@ static long freeDIB(LPBITMAPINFO lpDIBHeader)
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}
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//-----------------------------------------------------------------------------
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// also implemented here from wxImage
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//-----------------------------------------------------------------------------
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/*
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class wxImage : wxGDIObject
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{
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wxImage( const wxBitmap &bitmap );
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wxBitmap ConvertToBitmap() const;
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}
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*/
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wxBitmap wxImage::ConvertToBitmap() const
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{
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wxBitmap bitmap;
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wxCHECK_MSG( Ok(), bitmap, "invalid image" );
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int width = GetWidth();
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int height = GetHeight();
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bitmap.SetWidth( width );
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bitmap.SetHeight( height );
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bitmap.SetDepth( wxDisplayDepth() );
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int headersize = sizeof(BITMAPINFOHEADER);
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LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
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wxCHECK_MSG( lpDIBh, bitmap, "could not allocate memory for DIB header" );
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// Fill in the DIB header
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lpDIBh->bmiHeader.biSize = headersize;
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lpDIBh->bmiHeader.biWidth = width;
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lpDIBh->bmiHeader.biHeight = -height;
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lpDIBh->bmiHeader.biSizeImage = width * height * 3;
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lpDIBh->bmiHeader.biPlanes = 1;
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lpDIBh->bmiHeader.biBitCount = 24;
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lpDIBh->bmiHeader.biCompression = BI_RGB;
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lpDIBh->bmiHeader.biClrUsed = 0;
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// These seem not needed for our purpose here.
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// lpDIBh->bmiHeader.biClrImportant = 0;
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// lpDIBh->bmiHeader.biXPelsPerMeter = 0;
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// lpDIBh->bmiHeader.biYPelsPerMeter = 0;
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unsigned char *lpBits = (unsigned char *) malloc( width*height*3 );
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if( !lpBits )
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{
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wxFAIL_MSG( "could not allocate memory for DIB" );
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free( lpDIBh );
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return bitmap;
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}
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unsigned char *data = GetData();
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unsigned char *ptdata = data, *ptbits = lpBits;
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for( int i=0; i<width*height; i++ )
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{
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*(ptbits++) = *(ptdata+2);
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*(ptbits++) = *(ptdata+1);
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*(ptbits++) = *(ptdata );
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ptdata += 3;
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}
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HDC hdc = ::GetDC(NULL);
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HBITMAP hbitmap;
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hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
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// The above line is equivalent to the following two lines.
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// hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
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// ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
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// or the following lines
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// hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
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// HDC memdc = ::CreateCompatibleDC( hdc );
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// ::SelectObject( memdc, hbitmap);
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// ::SetDIBitsToDevice( memdc, 0, 0, width, height,\
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// 0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
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// ::SelectObject( memdc, 0 );
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// ::DeleteDC( memdc );
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bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
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if( HasMask() )
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{
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unsigned char r = GetMaskRed();
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unsigned char g = GetMaskGreen();
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unsigned char b = GetMaskBlue();
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unsigned char zero = 0, one = 255;
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ptdata = data;
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ptbits = lpBits;
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for( int i=0; i<width*height; i++ )
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{
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if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
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{
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*(ptbits++) = zero;
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*(ptbits++) = zero;
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*(ptbits++) = zero;
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}
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else
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{
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*(ptbits++) = one;
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*(ptbits++) = one;
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*(ptbits++) = one;
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}
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}
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hbitmap = ::CreateBitmap( (WORD)width, (WORD)height, 1, 1, NULL );
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::SetDIBits( hdc, hbitmap, 0, (WORD)height, lpBits, lpDIBh, DIB_RGB_COLORS);
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wxMask bmpmask;
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bmpmask.SetMaskBitmap( (WXHBITMAP) hbitmap );
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bitmap.SetMask( &bmpmask );
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/* The following can also be used but is slow to run
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wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue());
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wxMask bmpmask( bitmap, colour );
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bitmap.SetMask( &bmpmask );
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*/
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}
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::ReleaseDC(NULL, hdc);
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freeDIB(lpDIBh);
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free(lpBits);
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if( bitmap.GetHBITMAP() )
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bitmap.SetOk( TRUE );
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else
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bitmap.SetOk( FALSE );
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return bitmap;
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}
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wxImage::wxImage( const wxBitmap &bitmap )
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{
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if( !bitmap.Ok() )
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{
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wxFAIL_MSG( "invalid bitmap" );
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return;
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}
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int width = bitmap.GetWidth();
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int height = bitmap.GetHeight();
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Create( width, height );
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unsigned char *data = GetData();
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if( !data )
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{
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wxFAIL_MSG( "could not allocate data for image" );
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return;
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}
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int headersize = sizeof(BITMAPINFOHEADER);
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LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
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if( !lpDIBh )
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{
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wxFAIL_MSG( "could not allocate data for DIB header" );
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free( data );
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return;
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}
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// Fill in the DIB header
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lpDIBh->bmiHeader.biSize = headersize;
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lpDIBh->bmiHeader.biWidth = width;
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lpDIBh->bmiHeader.biHeight = -height;
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lpDIBh->bmiHeader.biSizeImage = width * height * 3;
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lpDIBh->bmiHeader.biPlanes = 1;
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lpDIBh->bmiHeader.biBitCount = 24;
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lpDIBh->bmiHeader.biCompression = BI_RGB;
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lpDIBh->bmiHeader.biClrUsed = 0;
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// These seem not needed for our purpose here.
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// lpDIBh->bmiHeader.biClrImportant = 0;
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// lpDIBh->bmiHeader.biXPelsPerMeter = 0;
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// lpDIBh->bmiHeader.biYPelsPerMeter = 0;
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unsigned char *lpBits = (unsigned char *) malloc( width*height*3 );
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if( !lpBits )
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{
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wxFAIL_MSG( "could not allocate data for DIB" );
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free( data );
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free( lpDIBh );
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return;
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}
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HBITMAP hbitmap;
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hbitmap = (HBITMAP) bitmap.GetHBITMAP();
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HDC hdc = ::GetDC(NULL);
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::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
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unsigned char *ptdata = data, *ptbits = lpBits;
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for( int i=0; i<width*height; i++ )
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{
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*(ptdata++) = *(ptbits+2);
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*(ptdata++) = *(ptbits+1);
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*(ptdata++) = *(ptbits );
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ptbits += 3;
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}
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if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
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{
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hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
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HDC memdc = ::CreateCompatibleDC( hdc );
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::SetTextColor( memdc, RGB( 0, 0, 0 ) );
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::SetBkColor( memdc, RGB( 255, 255, 255 ) );
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::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
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::DeleteDC( memdc );
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unsigned char r=16, g=16, b=16; // background set to RGB(16,16,16)
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ptdata = data;
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ptbits = lpBits;
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for( int i=0; i<width*height; i++ )
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{
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if( *ptbits != 0 )
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{
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*(ptdata++) = r;
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*(ptdata++) = g;
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*(ptdata++) = b;
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}
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ptbits += 3;
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}
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SetMaskColour( r, g, b );
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}
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::ReleaseDC(NULL, hdc);
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freeDIB(lpDIBh);
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free(lpBits);
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}
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