#include "wx/msw/private.h"
#include "wx/log.h"
-#if !defined(__WXMICROWIN__)
+#if wxUSE_WXDIB
#include "wx/msw/dib.h"
#endif
wxDC *m_selectedInto;
#endif // __WXDEBUG__
+#if wxUSE_WXDIB
// when GetRawData() is called for a DDB we need to convert it to a DIB
// first to be able to provide direct access to it and we cache that DIB
// here and convert it back to DDB when UngetRawData() is called
wxDIB *m_dib;
+#endif
// true if we have alpha transparency info and can be drawn using
// AlphaBlend()
// decide whether we should create a DIB or a DDB for the given parameters
static bool wxShouldCreateDIB(int w, int h, int d, WXHDC hdc)
{
+#if wxUSE_WXDIB
// here is the logic:
//
// (a) if hdc is specified, the caller explicitly wants DDB
(d >= 24 ||
(d == -1 &&
wxDIB::GetLineSize(w, wxDisplayDepth())*h > 16*1024*1024));
+#else
+ return FALSE;
+#endif
}
// ----------------------------------------------------------------------------
m_bitmapMask = NULL;
m_hBitmap = (WXHBITMAP) NULL;
+#if wxUSE_WXDIB
m_dib = NULL;
+#endif
m_isDIB =
m_hasAlpha = FALSE;
wxASSERT_MSG( !m_selectedInto,
wxT("deleting bitmap still selected into wxMemoryDC") );
+#if wxUSE_WXDIB
wxASSERT_MSG( !m_dib, _T("forgot to call wxBitmap::UngetRawData()!") );
+#endif
if ( m_hBitmap)
{
bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon)
{
-#ifndef __WXMICROWIN__
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
// it may be either HICON or HCURSOR
HICON hicon = (HICON)icon.GetHandle();
#endif // Win16/Win32
}
+#if wxUSE_WXDIB
bool wxBitmap::CopyFromDIB(const wxDIB& dib)
{
wxCHECK_MSG( dib.IsOk(), FALSE, _T("invalid DIB in CopyFromDIB") );
return TRUE;
}
+#endif
wxBitmap::~wxBitmap()
{
HBITMAP hbitmap;
// are we going to use DIB?
- if ( wxShouldCreateDIB(w, h, depth, hdc) )
+ //
+ // NB: DDBs don't support alpha so if we have alpha channel we must use DIB
+ if ( image.HasAlpha() || wxShouldCreateDIB(w, h, depth, hdc) )
{
// don't delete the DIB section in dib object dtor
hbitmap = dib.Detach();
wxImage wxBitmap::ConvertToImage() const
{
+ // FIXME: this is untested code for WinCE, and
+ // the mask is not yet handled.
+ // For tips, see:
+ // http://www.codeproject.com/bitmap/dibsection.asp?print=true
+
+#ifdef __WXWINCE__
+ // the colour used as transparent one in wxImage and the one it is replaced
+ // with when it really occurs in the bitmap
+ static const int MASK_RED = 1;
+ static const int MASK_GREEN = 2;
+ static const int MASK_BLUE = 3;
+ static const int MASK_BLUE_REPLACEMENT = 2;
+
+ wxImage image;
+
+ wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
+
+ // create an wxImage object
+ int width = GetWidth();
+ int height = GetHeight();
+ image.Create( width, height );
+ unsigned char *data = image.GetData();
+ if( !data )
+ {
+ wxFAIL_MSG( wxT("could not allocate data for image") );
+ return wxNullImage;
+ }
+
+ // 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;
+ }
+
+ // create a DIB header
+ int headersize = sizeof(BITMAPINFOHEADER);
+ BITMAPINFO *lpDIBh = (BITMAPINFO *) malloc( headersize );
+ if( !lpDIBh )
+ {
+ wxFAIL_MSG( wxT("could not allocate data for DIB header") );
+ free( data );
+ return wxNullImage;
+ }
+ // 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 is allocated by CreateDIBSection
+ void *lpBits = NULL;
+
+ // copy data from the device-dependent bitmap to the DIB
+ HDC hdc = ::GetDC(NULL);
+ HBITMAP hBitmap = (HBITMAP) GetHBITMAP();
+
+ HBITMAP hBitmapSection = ::CreateDIBSection( hdc, lpDIBh, DIB_RGB_COLORS, & lpBits, NULL, 0 );
+ if (!hBitmapSection)
+ {
+ wxFAIL_MSG( wxT("could not create a DIB section") );
+ return wxNullImage;
+ }
+
+ // Copy the image from the DDB to the DIBSection
+ // Need to copy the supplied bitmap onto the newly created DIBsection
+ HDC hMemDC = CreateCompatibleDC(hdc);
+ HDC hCopyDC = CreateCompatibleDC(hdc);
+
+ if (! hMemDC || ! hCopyDC)
+ {
+ wxFAIL_MSG( wxT("unable to create compatible DCs") );
+ return wxNullImage;
+ }
+
+#if 0
+ if (m_hPal)
+ {
+ SelectPalette(hMemDC, m_hPal, FALSE); RealizePalette(hMemDC);
+ SelectPalette(hCopyDC, m_hPal, FALSE); RealizePalette(hCopyDC);
+ }
+#endif
+
+ HBITMAP hOldMemBitmap = (HBITMAP) SelectObject(hMemDC, hBitmap);
+ HBITMAP hOldCopyBitmap = (HBITMAP) SelectObject(hCopyDC, hBitmapSection);
+
+ BitBlt(hCopyDC, 0, 0, GetWidth(), GetHeight(), hMemDC, 0, 0, SRCCOPY);
+
+ SelectObject(hMemDC, hOldMemBitmap);
+ SelectObject(hCopyDC, hOldCopyBitmap);
+ DeleteDC(hMemDC);
+ DeleteDC(hCopyDC);
+
+#if 0
+ if (m_hPal)
+ {
+ HGDIOBJ hObj = ::GetStockObject(DEFAULT_PALETTE);
+ SelectObject(hMemDC, hObj);
+ SelectObject(hCopyDC, hObj);
+ }
+#endif
+
+ ReleaseDC(NULL, hdc);
+
+ // copy DIB data into the wxImage object
+ int i, j;
+ unsigned char *ptdata = data;
+ unsigned char *ptbits = (unsigned char*) 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;
+ }
+
+ // TODO
+#if 0
+ // similarly, set data according to the possible mask bitmap
+ if( GetMask() && GetMask()->GetMaskBitmap() )
+ {
+ hbitmap = (HBITMAP) 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 );
+ ptdata = data;
+ ptbits = lpBits;
+ for( i=0; i<height; i++ )
+ {
+ for( j=0; j<width; j++ )
+ {
+ // is this pixel transparent?
+ if ( *ptbits != 0 )
+ {
+ if ( (ptdata[0] == MASK_RED) &&
+ (ptdata[1] == MASK_GREEN) &&
+ (ptdata[2] == MASK_BLUE) )
+ {
+ // we have to fudge the colour a bit to prevent this
+ // pixel from appearing transparent
+ ptdata[2] = MASK_BLUE_REPLACEMENT;
+ }
+ ptdata += 3;
+ }
+ else // masked pixel
+ {
+ *(ptdata++) = MASK_RED;
+ *(ptdata++) = MASK_GREEN;
+ *(ptdata++) = MASK_BLUE;
+ }
+ ptbits += 3;
+ }
+ ptbits += padding;
+ }
+
+ image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
+ image.SetMask( TRUE );
+ }
+ else
+#endif
+ {
+ image.SetMask( FALSE );
+ }
+
+ // free allocated resources
+ ::ReleaseDC(NULL, hdc);
+ free(lpDIBh);
+
+ // Delete the DIB section
+ ::DeleteObject(hBitmapSection);
+
+ return image;
+#else
+ // the colour used as transparent one in wxImage and the one it is replaced
+ // with when it really occurs in the bitmap
+ static const int MASK_RED = 1;
+ static const int MASK_GREEN = 2;
+ static const int MASK_BLUE = 3;
+ static const int MASK_BLUE_REPLACEMENT = 2;
+
wxImage image;
wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
::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 )
+ // is this pixel transparent?
+ if ( *ptbits != 0 )
+ {
+ if ( (ptdata[0] == MASK_RED) &&
+ (ptdata[1] == MASK_GREEN) &&
+ (ptdata[2] == MASK_BLUE) )
+ {
+ // we have to fudge the colour a bit to prevent this
+ // pixel from appearing transparent
+ ptdata[2] = MASK_BLUE_REPLACEMENT;
+ }
ptdata += 3;
- else
+ }
+ else // masked pixel
{
- *(ptdata++) = r;
- *(ptdata++) = g;
- *(ptdata++) = b;
+ *(ptdata++) = MASK_RED;
+ *(ptdata++) = MASK_GREEN;
+ *(ptdata++) = MASK_BLUE;
}
ptbits += 3;
}
ptbits += padding;
}
- image.SetMaskColour( r, g, b );
+
+ image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
image.SetMask( TRUE );
}
else
free(lpBits);
return image;
+#endif
}
#endif // wxUSE_IMAGE
#ifdef wxHAVE_RAW_BITMAP
void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
{
+#if wxUSE_WXDIB
if ( !Ok() )
{
// no bitmap, no data (raw or otherwise)
}
return bits;
+#else
+ return NULL;
+#endif
}
void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
{
+#if wxUSE_WXDIB
if ( !Ok() )
return;
delete dib;
}
}
+#endif
}
#endif // #ifdef wxHAVE_RAW_BITMAP
projects / wxWidgets.git / blobdiff