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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4168 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
David Webster
1999-10-25 02:41:20 +00:00
parent 2695a14e85
commit 004fd0c883
25 changed files with 540 additions and 138 deletions
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339
src/common/image.cpp
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@@ -452,9 +452,9 @@ bool wxImage::CanRead( const wxString &name )
bool wxImage::CanRead( wxInputStream &stream )
{
wxList &list=GetHandlers();
for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
{
{
wxImageHandler *handler=(wxImageHandler*)node->GetData();
if (handler->CanRead( stream ))
return TRUE;
@@ -1692,6 +1692,341 @@ wxImage::wxImage( const wxBitmap &bitmap )
}
#endif
#ifdef __WXPM__
// OS/2 Presentation manager conversion routings
wxBitmap wxImage::ConvertToBitmap() const
{
if ( !Ok() )
return wxNullBitmap;
wxBitmap bitmap; // remove
// TODO:
/*
int sizeLimit = 1024*768*3;
// width and height of the device-dependent bitmap
int width = GetWidth();
int bmpHeight = GetHeight();
// calc the number of bytes per scanline and padding
int bytePerLine = width*3;
int sizeDWORD = sizeof( DWORD );
int lineBoundary = bytePerLine % sizeDWORD;
int padding = 0;
if( lineBoundary > 0 )
{
padding = sizeDWORD - lineBoundary;
bytePerLine += padding;
}
// calc the number of DIBs and heights of DIBs
int numDIB = 1;
int hRemain = 0;
int height = sizeLimit/bytePerLine;
if( height >= bmpHeight )
height = bmpHeight;
else
{
numDIB = bmpHeight / height;
hRemain = bmpHeight % height;
if( hRemain >0 ) numDIB++;
}
// set bitmap parameters
wxBitmap bitmap;
wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
bitmap.SetWidth( width );
bitmap.SetHeight( bmpHeight );
bitmap.SetDepth( wxDisplayDepth() );
// create a DIB header
int headersize = sizeof(BITMAPINFOHEADER);
LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
wxCHECK_MSG( lpDIBh, bitmap, wxT("could not allocate memory for DIB header") );
// Fill in the DIB header
lpDIBh->bmiHeader.biSize = headersize;
lpDIBh->bmiHeader.biWidth = (DWORD)width;
lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
// the general formula for biSizeImage:
// ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
lpDIBh->bmiHeader.biPlanes = 1;
lpDIBh->bmiHeader.biBitCount = 24;
lpDIBh->bmiHeader.biCompression = BI_RGB;
lpDIBh->bmiHeader.biClrUsed = 0;
// These seem not really needed for our purpose here.
lpDIBh->bmiHeader.biClrImportant = 0;
lpDIBh->bmiHeader.biXPelsPerMeter = 0;
lpDIBh->bmiHeader.biYPelsPerMeter = 0;
// memory for DIB data
unsigned char *lpBits;
lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
if( !lpBits )
{
wxFAIL_MSG( wxT("could not allocate memory for DIB") );
free( lpDIBh );
return bitmap;
}
// create and set the device-dependent bitmap
HDC hdc = ::GetDC(NULL);
HDC memdc = ::CreateCompatibleDC( hdc );
HBITMAP hbitmap;
hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
::SelectObject( memdc, hbitmap);
// copy image data into DIB data and then into DDB (in a loop)
unsigned char *data = GetData();
int i, j, n;
int origin = 0;
unsigned char *ptdata = data;
unsigned char *ptbits;
for( n=0; n<numDIB; n++ )
{
if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
{
// redefine height and size of the (possibly) last smaller DIB
// memory is not reallocated
height = hRemain;
lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
}
ptbits = lpBits;
for( j=0; j<height; j++ )
{
for( i=0; i<width; i++ )
{
*(ptbits++) = *(ptdata+2);
*(ptbits++) = *(ptdata+1);
*(ptbits++) = *(ptdata );
ptdata += 3;
}
for( i=0; i< padding; i++ ) *(ptbits++) = 0;
}
::StretchDIBits( memdc, 0, origin, width, height,\
0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
origin += height;
// if numDIB = 1, lines below can also be used
// hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
// The above line is equivalent to the following two lines.
// hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
// ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
// or the following lines
// hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
// HDC memdc = ::CreateCompatibleDC( hdc );
// ::SelectObject( memdc, hbitmap);
// ::SetDIBitsToDevice( memdc, 0, 0, width, height,
// 0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
// ::SelectObject( memdc, 0 );
// ::DeleteDC( memdc );
}
bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
// similarly, created an mono-bitmap for the possible mask
if( HasMask() )
{
hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
::SelectObject( memdc, hbitmap);
if( numDIB == 1 ) height = bmpHeight;
else height = sizeLimit/bytePerLine;
lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
origin = 0;
unsigned char r = GetMaskRed();
unsigned char g = GetMaskGreen();
unsigned char b = GetMaskBlue();
unsigned char zero = 0, one = 255;
ptdata = data;
for( n=0; n<numDIB; n++ )
{
if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
{
// redefine height and size of the (possibly) last smaller DIB
// memory is not reallocated
height = hRemain;
lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
}
ptbits = lpBits;
for( int j=0; j<height; j++ )
{
for(i=0; i<width; i++ )
{
if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
{
*(ptbits++) = one;
*(ptbits++) = one;
*(ptbits++) = one;
}
else
{
*(ptbits++) = zero;
*(ptbits++) = zero;
*(ptbits++) = zero;
}
}
for( i=0; i< padding; i++ ) *(ptbits++) = zero;
}
::StretchDIBits( memdc, 0, origin, width, height,\
0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
origin += height;
}
// create a wxMask object
wxMask *mask = new wxMask();
mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
bitmap.SetMask( mask );
}
// free allocated resources
::SelectObject( memdc, 0 );
::DeleteDC( memdc );
::ReleaseDC(NULL, hdc);
free(lpDIBh);
free(lpBits);
// check the wxBitmap object
if( bitmap.GetHBITMAP() )
bitmap.SetOk( TRUE );
else
bitmap.SetOk( FALSE );
*/
return bitmap;
}
wxImage::wxImage( const wxBitmap &bitmap )
{
// check the bitmap
if( !bitmap.Ok() )
{
wxFAIL_MSG( wxT("invalid bitmap") );
return;
}
// create an wxImage object
int width = bitmap.GetWidth();
int height = bitmap.GetHeight();
Create( width, height );
unsigned char *data = GetData();
if( !data )
{
wxFAIL_MSG( wxT("could not allocate data for image") );
return;
}
// calc the number of bytes per scanline and padding in the DIB
int bytePerLine = width*3;
int sizeDWORD = sizeof( DWORD );
int lineBoundary = bytePerLine % sizeDWORD;
int padding = 0;
if( lineBoundary > 0 )
{
padding = sizeDWORD - lineBoundary;
bytePerLine += padding;
}
// TODO:
/*
// create a DIB header
int headersize = sizeof(BITMAPINFOHEADER);
LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
if( !lpDIBh )
{
wxFAIL_MSG( wxT("could not allocate data for DIB header") );
free( data );
return;
}
// Fill in the DIB header
lpDIBh->bmiHeader.biSize = headersize;
lpDIBh->bmiHeader.biWidth = width;
lpDIBh->bmiHeader.biHeight = -height;
lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
lpDIBh->bmiHeader.biPlanes = 1;
lpDIBh->bmiHeader.biBitCount = 24;
lpDIBh->bmiHeader.biCompression = BI_RGB;
lpDIBh->bmiHeader.biClrUsed = 0;
// These seem not really needed for our purpose here.
lpDIBh->bmiHeader.biClrImportant = 0;
lpDIBh->bmiHeader.biXPelsPerMeter = 0;
lpDIBh->bmiHeader.biYPelsPerMeter = 0;
// memory for DIB data
unsigned char *lpBits;
lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
if( !lpBits )
{
wxFAIL_MSG( wxT("could not allocate data for DIB") );
free( data );
free( lpDIBh );
return;
}
// copy data from the device-dependent bitmap to the DIB
HDC hdc = ::GetDC(NULL);
HBITMAP hbitmap;
hbitmap = (HBITMAP) bitmap.GetHBITMAP();
::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
// copy DIB data into the wxImage object
int i, j;
unsigned char *ptdata = data;
unsigned char *ptbits = lpBits;
for( i=0; i<height; i++ )
{
for( j=0; j<width; j++ )
{
*(ptdata++) = *(ptbits+2);
*(ptdata++) = *(ptbits+1);
*(ptdata++) = *(ptbits );
ptbits += 3;
}
ptbits += padding;
}
// similarly, set data according to the possible mask bitmap
if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
{
hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
// memory DC created, color set, data copied, and memory DC deleted
HDC memdc = ::CreateCompatibleDC( hdc );
::SetTextColor( memdc, RGB( 0, 0, 0 ) );
::SetBkColor( memdc, RGB( 255, 255, 255 ) );
::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
::DeleteDC( memdc );
// background color set to RGB(16,16,16) in consistent with wxGTK
unsigned char r=16, g=16, b=16;
ptdata = data;
ptbits = lpBits;
for( i=0; i<height; i++ )
{
for( j=0; j<width; j++ )
{
if( *ptbits != 0 )
ptdata += 3;
else
{
*(ptdata++) = r;
*(ptdata++) = g;
*(ptdata++) = b;
}
ptbits += 3;
}
ptbits += padding;
}
SetMaskColour( r, g, b );
SetMask( TRUE );
}
else
{
SetMask( FALSE );
}
// free allocated resources
::ReleaseDC(NULL, hdc);
free(lpDIBh);
free(lpBits);
*/
}
#endif
// A module to allow wxImage initialization/cleanup
// without calling these functions from app.cpp or from
// the user's application.