// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "bitmap.h"
#endif
#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)
-{
- // here is the logic:
- //
- // (a) if hdc is specified, the caller explicitly wants DDB
- // (b) otherwise, create a DIB if depth >= 24 (we don't support 16bpp or
- // less DIBs anyhow)
- // (c) finally, create DIBs under Win9x even if the depth hasn't been
- // explicitly specified but the current display depth is 24 or more
- // and the image is "big", i.e. > 16Mb which is the theoretical limit
- // for DDBs under Win9x
- //
- // consequences (all of which seem to make sense):
- //
- // (i) by default, DDBs are created (depth == -1 usually)
- // (ii) DIBs can be created by explicitly specifying the depth
- // (iii) using a DC always forces creating a DDB
- return !hdc &&
- (d >= 24 ||
- (d == -1 &&
- wxDIB::GetLineSize(w, wxDisplayDepth())*h > 16*1024*1024));
-}
+//
+// NB: we always use DIBs under Windows CE as this is much simpler (even if
+// also less efficient...) and we obviously can't use them if there is no
+// DIB support compiled in at all
+#ifdef __WXWINCE__
+ static inline bool wxShouldCreateDIB(int, int, int, WXHDC) { return true; }
+
+ #define ALWAYS_USE_DIB
+#elif !wxUSE_WXDIB
+ // no sense in defining wxShouldCreateDIB() as we can't compile code
+ // executed if it is true, so we have to use #if's anyhow
+ #define NEVER_USE_DIB
+#else // wxUSE_WXDIB && !__WXWINCE__
+ static inline bool wxShouldCreateDIB(int w, int h, int d, WXHDC hdc)
+ {
+ // here is the logic:
+ //
+ // (a) if hdc is specified, the caller explicitly wants DDB
+ // (b) otherwise, create a DIB if depth >= 24 (we don't support 16bpp
+ // or less DIBs anyhow)
+ // (c) finally, create DIBs under Win9x even if the depth hasn't been
+ // explicitly specified but the current display depth is 24 or
+ // more and the image is "big", i.e. > 16Mb which is the
+ // theoretical limit for DDBs under Win9x
+ //
+ // consequences (all of which seem to make sense):
+ //
+ // (i) by default, DDBs are created (depth == -1 usually)
+ // (ii) DIBs can be created by explicitly specifying the depth
+ // (iii) using a DC always forces creating a DDB
+ return !hdc &&
+ (d >= 24 ||
+ (d == -1 &&
+ wxDIB::GetLineSize(w, wxDisplayDepth())*h > 16*1024*1024));
+ }
+
+ #define SOMETIMES_USE_DIB
+#endif // different DIB usage scenarious
// ----------------------------------------------------------------------------
// wxBitmapRefData
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();
{
wxLogLastError(wxT("GetIconInfo"));
- return FALSE;
+ return false;
}
wxBitmapRefData *refData = new wxBitmapRefData;
// delete the old one now as we don't need it any more
::DeleteObject(iconInfo.hbmMask);
-#if WXWIN_COMPATIBILITY_2
- refData->m_ok = TRUE;
-#endif // WXWIN_COMPATIBILITY_2
-
- return TRUE;
+ return true;
#else
- return FALSE;
+ wxUnusedVar(icon);
+ return false;
#endif
}
if ( !cursor.Ok() )
return FALSE;
-#ifdef __WIN16__
- wxFAIL_MSG( _T("don't know how to convert cursor to bitmap") );
-
- return FALSE;
-#else
return CopyFromIconOrCursor(cursor);
-#endif // Win16
}
bool wxBitmap::CopyFromIcon(const wxIcon& icon)
if ( !icon.Ok() )
return FALSE;
- // GetIconInfo() doesn't exist under Win16 and I don't know any other way
- // to create a bitmap from icon there - but using this way we won't have
- // the mask (FIXME)
-#ifdef __WIN16__
- int width = icon.GetWidth(),
- height = icon.GetHeight();
-
- // copy the icon to the bitmap
- ScreenHDC hdcScreen;
- HDC hdc = ::CreateCompatibleDC(hdcScreen);
- HBITMAP hbitmap = ::CreateCompatibleBitmap(hdcScreen, width, height);
- HBITMAP hbmpOld = (HBITMAP)::SelectObject(hdc, hbitmap);
-
- ::DrawIcon(hdc, 0, 0, GetHiconOf(icon));
-
- ::SelectObject(hdc, hbmpOld);
- ::DeleteDC(hdc);
-
- wxBitmapRefData *refData = new wxBitmapRefData;
- m_refData = refData;
-
- refData->m_width = width;
- refData->m_height = height;
- refData->m_depth = wxDisplayDepth();
-
- refData->m_hBitmap = (WXHBITMAP)hbitmap;
-
-#if WXWIN_COMPATIBILITY_2
- refData->m_ok = TRUE;
-#endif // WXWIN_COMPATIBILITY_2
-
- return TRUE;
-#else // Win32
return CopyFromIconOrCursor(icon);
-#endif // Win16/Win32
}
+#ifndef NEVER_USE_DIB
+
bool wxBitmap::CopyFromDIB(const wxDIB& dib)
{
wxCHECK_MSG( dib.IsOk(), FALSE, _T("invalid DIB in CopyFromDIB") );
+#ifdef SOMETIMES_USE_DIB
HBITMAP hbitmap = dib.CreateDDB();
if ( !hbitmap )
return FALSE;
+#else // ALWAYS_USE_DIB
+ HBITMAP hbitmap = ((wxDIB &)dib).Detach(); // const_cast
+#endif // SOMETIMES_USE_DIB/ALWAYS_USE_DIB
UnRef();
return TRUE;
}
+#endif // NEVER_USE_DIB
+
wxBitmap::~wxBitmap()
{
}
}
// Create from XPM data
+#if wxUSE_IMAGE && wxUSE_XPM
bool wxBitmap::CreateFromXpm(const char **data)
+#else
+bool wxBitmap::CreateFromXpm(const char **WXUNUSED(data))
+#endif
{
#if wxUSE_IMAGE && wxUSE_XPM
Init();
GetBitmapData()->m_width = w;
GetBitmapData()->m_height = h;
- HBITMAP hbmp;
+ HBITMAP hbmp wxDUMMY_INITIALIZE(0);
+#ifndef NEVER_USE_DIB
if ( wxShouldCreateDIB(w, h, d, hdc) )
{
if ( d == -1 )
GetBitmapData()->m_depth = d;
}
else // create a DDB
+#endif // NEVER_USE_DIB
{
- if ( d == -1 )
- d = wxDisplayDepth();
-
- GetBitmapData()->m_depth = d;
-
+#ifndef ALWAYS_USE_DIB
#ifndef __WXMICROWIN__
if ( d > 0 )
{
{
wxLogLastError(wxT("CreateBitmap"));
}
+
+ GetBitmapData()->m_depth = d;
}
- else
+ else // d == 0, create bitmap compatible with the screen
#endif // !__WXMICROWIN__
{
ScreenHDC dc;
GetBitmapData()->m_depth = wxDisplayDepth();
}
+#endif // !ALWAYS_USE_DIB
}
SetHBITMAP((WXHBITMAP)hbmp);
-#if WXWIN_COMPATIBILITY_2
- GetBitmapData()->m_ok = hbmp != 0;
-#endif // WXWIN_COMPATIBILITY_2
-
return Ok();
}
SetPalette(image.GetPalette());
#endif // wxUSE_PALETTE
-#if WXWIN_COMPATIBILITY_2
- // check the wxBitmap object
- GetBitmapData()->SetOk();
-#endif // WXWIN_COMPATIBILITY_2
-
return TRUE;
}
// wxImage to/from conversions
// ----------------------------------------------------------------------------
+#if wxUSE_WXDIB
+
bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
{
return CreateFromImage(image, depth, 0);
return CreateFromImage(image, -1, dc.GetHDC());
}
-bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc )
+bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)
{
wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") );
// next either store DIB as is or create a DDB from it
- HBITMAP hbitmap;
+ HBITMAP hbitmap wxDUMMY_INITIALIZE(0);
// are we going to use DIB?
//
refData->m_isDIB = TRUE;
refData->m_depth = dib.GetDepth();
}
+#ifndef ALWAYS_USE_DIB
else // we need to convert DIB to DDB
{
hbitmap = dib.CreateDDB((HDC)hdc);
- refData->m_depth = depth == -1 ? wxDisplayDepth() : depth;
+ refData->m_depth = depth == -1 ? dib.GetDepth() : depth;
}
+#endif // !ALWAYS_USE_DIB
// validate this object
SetHBITMAP((WXHBITMAP)hbitmap);
-#if WXWIN_COMPATIBILITY_2
- m_refData->m_ok = TRUE;
-#endif // WXWIN_COMPATIBILITY_2
-
// finally also set the mask if we have one
if ( image.HasMask() )
{
wxImage wxBitmap::ConvertToImage() const
{
- // 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;
+ // convert DDB to DIB
+ wxDIB dib(*this);
- 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 )
+ if ( !dib.IsOk() )
{
- 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 )
+ // and then DIB to our wxImage
+ wxImage image = dib.ConvertToImage();
+ if ( !image.Ok() )
{
- 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
- 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 wxNullImage;
- }
-
- // copy data from the device-dependent bitmap to the DIB
- HDC hdc = ::GetDC(NULL);
- HBITMAP hbitmap;
- hbitmap = (HBITMAP) 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++ )
+ // now do the same for the mask, if we have any
+ HBITMAP hbmpMask = GetMask() ? (HBITMAP) GetMask()->GetMaskBitmap() : NULL;
+ if ( hbmpMask )
{
- for( j=0; j<width; j++ )
+ wxDIB dibMask(hbmpMask);
+ if ( dibMask.IsOk() )
{
- *(ptdata++) = *(ptbits+2);
- *(ptdata++) = *(ptbits+1);
- *(ptdata++) = *(ptbits );
- ptbits += 3;
- }
- ptbits += padding;
- }
-
- // 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++ )
+ // TODO: use wxRawBitmap to iterate over DIB
+
+ // we hard code the mask colour for now but we could also make an
+ // effort (and waste time) to choose a colour not present in the
+ // image already to avoid having to fudge the pixels below --
+ // whether it's worth to do it is unclear however
+ 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;
+
+ const int h = dibMask.GetHeight();
+ const int w = dibMask.GetWidth();
+ const int bpp = dibMask.GetDepth();
+ const int maskBytesPerPixel = bpp >> 3;
+ const int maskBytesPerLine = wxDIB::GetLineSize(w, bpp);
+ unsigned char *data = image.GetData();
+
+ // remember that DIBs are stored in bottom to top order
+ unsigned char *
+ maskLineStart = dibMask.GetData() + ((h - 1) * maskBytesPerLine);
+
+ for ( int y = 0; y < h; y++, maskLineStart -= maskBytesPerLine )
{
- // is this pixel transparent?
- if ( *ptbits != 0 )
+ // traverse one mask DIB line
+ unsigned char *mask = maskLineStart;
+ for ( int x = 0; x < w; x++, mask += maskBytesPerPixel )
{
- if ( (ptdata[0] == MASK_RED) &&
- (ptdata[1] == MASK_GREEN) &&
- (ptdata[2] == MASK_BLUE) )
+ // should this pixel be transparent?
+ if ( *mask )
{
- // we have to fudge the colour a bit to prevent this
- // pixel from appearing transparent
- ptdata[2] = MASK_BLUE_REPLACEMENT;
+ // no, check that it isn't transparent by accident
+ if ( (data[0] == MASK_RED) &&
+ (data[1] == MASK_GREEN) &&
+ (data[2] == MASK_BLUE) )
+ {
+ // we have to fudge the colour a bit to prevent
+ // this pixel from appearing transparent
+ data[2] = MASK_BLUE_REPLACEMENT;
+ }
+
+ data += 3;
+ }
+ else // yes, transparent pixel
+ {
+ *data++ = MASK_RED;
+ *data++ = MASK_GREEN;
+ *data++ = MASK_BLUE;
}
- 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
- {
- image.SetMask( FALSE );
+ image.SetMaskColour(MASK_RED, MASK_GREEN, MASK_BLUE);
+ }
}
- // free allocated resources
- ::ReleaseDC(NULL, hdc);
- free(lpDIBh);
- free(lpBits);
return image;
}
+#endif // wxUSE_WXDIB
+
#endif // wxUSE_IMAGE
// ----------------------------------------------------------------------------
return handler->LoadFile(this, filename, type, -1, -1);
}
#if wxUSE_IMAGE
- else
+ else // no bitmap handler found
{
wxImage image;
if ( image.LoadFile( filename, type ) && image.Ok() )
return handler->SaveFile(this, filename, type, palette);
}
#if wxUSE_IMAGE
- else
+ else // no bitmap handler found
{
// FIXME what about palette? shouldn't we use it?
wxImage image = ConvertToImage();
GetBitmapData()->SetMask(mask);
}
-#if WXWIN_COMPATIBILITY_2
-
-void wxBitmap::SetOk(bool isOk)
-{
- EnsureHasData();
-
- GetBitmapData()->m_ok = isOk;
-}
-
-#endif // WXWIN_COMPATIBILITY_2
-
#if WXWIN_COMPATIBILITY_2_4
void wxBitmap::SetQuality(int WXUNUSED(quality))
#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;
p = rowStart;
p.OffsetY(data, 1);
}
+ }
- // if we're a DDB we need to convert DIB back to DDB now to make the
- // changes made via raw bitmap access effective
- if ( !GetBitmapData()->m_isDIB )
- {
- wxDIB *dib = GetBitmapData()->m_dib;
- GetBitmapData()->m_dib = NULL;
+ // if we're a DDB we need to convert DIB back to DDB now to make the
+ // changes made via raw bitmap access effective
+ if ( !GetBitmapData()->m_isDIB )
+ {
+ wxDIB *dib = GetBitmapData()->m_dib;
+ GetBitmapData()->m_dib = NULL;
- // TODO: convert
+ // TODO: convert
- delete dib;
- }
+ delete dib;
}
+#endif // wxUSE_WXDIB
}
#endif // #ifdef wxHAVE_RAW_BITMAP
HPALETTE hPal, LPBITMAPINFO* lpDIBHeader)
{
unsigned long i, headerSize;
- LPBITMAPINFO lpDIBheader = NULL;
- LPPALETTEENTRY lpPe = NULL;
-
// Allocate space for a DIB header
headerSize = (sizeof(BITMAPINFOHEADER) + (256 * sizeof(PALETTEENTRY)));
- lpDIBheader = (BITMAPINFO *) malloc(headerSize);
- lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER));
+ LPBITMAPINFO lpDIBheader = (BITMAPINFO *) malloc(headerSize);
+ LPPALETTEENTRY lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER));
GetPaletteEntries(hPal, 0, 256, lpPe);
}
ICONINFO iconInfo;
+ wxZeroMemory(iconInfo);
iconInfo.fIcon = iconWanted; // do we want an icon or a cursor?
if ( !iconWanted )
{
wxLogLastError(wxT("CreateBitmap"));
}
- ::SelectObject(hdcSrc, hbmpMask);
- ::SelectObject(hdcDst, hbmpInvMask);
+ HGDIOBJ srcTmp = ::SelectObject(hdcSrc, hbmpMask);
+ HGDIOBJ dstTmp = ::SelectObject(hdcDst, hbmpInvMask);
if ( !::BitBlt(hdcDst, 0, 0, w, h,
hdcSrc, 0, 0,
NOTSRCCOPY) )
wxLogLastError(wxT("BitBlt"));
}
+ // Deselect objects
+ SelectObject(hdcSrc,srcTmp);
+ SelectObject(hdcDst,dstTmp);
+
::DeleteDC(hdcSrc);
::DeleteDC(hdcDst);
projects / wxWidgets.git / blobdiff