-/////////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////////
// Name: bitmap.cpp
// Purpose: wxBitmap
// Author: Julian Smart
#include "wx/icon.h"
#endif
-//#include "device.h"
-
#include "wx/msw/private.h"
#include "wx/log.h"
#define CLR_INVALID ((COLORREF)-1)
#endif // no CLR_INVALID
+// ----------------------------------------------------------------------------
+// Bitmap data
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxBitmapRefData : public wxGDIImageRefData
+{
+public:
+ wxBitmapRefData();
+ virtual ~wxBitmapRefData() { Free(); }
+
+ virtual void Free();
+
+ // set the mask object to use as the mask, we take ownership of it
+ void SetMask(wxMask *mask)
+ {
+ delete m_bitmapMask;
+ m_bitmapMask = mask;
+ }
+
+ // set the HBITMAP to use as the mask
+ void SetMask(HBITMAP hbmpMask)
+ {
+ SetMask(new wxMask((WXHBITMAP)hbmpMask));
+ }
+
+ // return the mask
+ wxMask *GetMask() const { return m_bitmapMask; }
+
+public:
+ int m_numColors;
+#if wxUSE_PALETTE
+ wxPalette m_bitmapPalette;
+#endif // wxUSE_PALETTE
+
+ // MSW-specific
+ // ------------
+
+ // this field is solely for error checking: we detect selecting a bitmap
+ // into more than one DC at once or deleting a bitmap still selected into a
+ // DC (both are serious programming errors under Windows)
+ wxDC *m_selectedInto;
+
+#if wxUSE_DIB_FOR_BITMAP
+ // file mapping handle for large DIB's
+ HANDLE m_hFileMap;
+#endif // wxUSE_DIB_FOR_BITMAP
+
+private:
+ // optional mask for transparent drawing
+ wxMask *m_bitmapMask;
+
+ DECLARE_NO_COPY_CLASS(wxBitmapRefData)
+};
+
// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------
wxBitmapRefData::wxBitmapRefData()
{
- m_quality = 0;
m_selectedInto = NULL;
m_numColors = 0;
m_bitmapMask = NULL;
m_hBitmap = (WXHBITMAP) NULL;
+#if wxUSE_DIB_FOR_BITMAP
+ m_hFileMap = 0;
+#endif // wxUSE_DIB_FOR_BITMAP
}
void wxBitmapRefData::Free()
if ( m_hBitmap)
{
- // printf("About to delete bitmap %d\n", (int) (HBITMAP) m_hBitmap);
-#if 1
if ( !::DeleteObject((HBITMAP)m_hBitmap) )
{
wxLogLastError(wxT("DeleteObject(hbitmap)"));
}
-#endif
}
+#if wxUSE_DIB_FOR_BITMAP
+ if ( m_hFileMap )
+ {
+ ::CloseHandle(m_hFileMap);
+
+ m_hFileMap = 0;
+ }
+#endif // wxUSE_DIB_FOR_BITMAP
+
delete m_bitmapMask;
m_bitmapMask = NULL;
}
}
+wxGDIImageRefData *wxBitmap::CreateData() const
+{
+ return new wxBitmapRefData;
+}
+
#ifdef __WIN32__
bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon)
// the mask returned by GetIconInfo() is inversed compared to the usual
// wxWin convention
- refData->m_bitmapMask = new wxMask((WXHBITMAP)
- wxInvertMask(iconInfo.hbmMask, w, h));
+ refData->SetMask(wxInvertMask(iconInfo.hbmMask, w, h));
// delete the old one now as we don't need it any more
m_refData = new wxBitmapRefData;
- GetBitmapData()->m_width = w;
- GetBitmapData()->m_height = h;
- GetBitmapData()->m_depth = d;
-
- HBITMAP hbmp;
-#ifndef __WXMICROWIN__
- if ( d > 0 )
+#if wxUSE_DIB_FOR_BITMAP
+ if ( w && h && d >= 16 )
{
- hbmp = ::CreateBitmap(w, h, 1, d, NULL);
- if ( !hbmp )
- {
- wxLogLastError(wxT("CreateBitmap"));
- }
+ if ( !CreateDIB(w, h, d) )
+ return FALSE;
}
else
-#endif
+#endif // wxUSE_DIB_FOR_BITMAP
{
- ScreenHDC dc;
- hbmp = ::CreateCompatibleBitmap(dc, w, h);
- if ( !hbmp )
+ GetBitmapData()->m_width = w;
+ GetBitmapData()->m_height = h;
+ GetBitmapData()->m_depth = d;
+
+ HBITMAP hbmp;
+#ifndef __WXMICROWIN__
+ if ( d > 0 )
{
- wxLogLastError(wxT("CreateCompatibleBitmap"));
+ hbmp = ::CreateBitmap(w, h, 1, d, NULL);
+ if ( !hbmp )
+ {
+ wxLogLastError(wxT("CreateBitmap"));
+ }
}
+ else
+#endif // !__WXMICROWIN__
+ {
+ ScreenHDC dc;
+ hbmp = ::CreateCompatibleBitmap(dc, w, h);
+ if ( !hbmp )
+ {
+ wxLogLastError(wxT("CreateCompatibleBitmap"));
+ }
- GetBitmapData()->m_depth = wxDisplayDepth();
- }
+ GetBitmapData()->m_depth = wxDisplayDepth();
+ }
- SetHBITMAP((WXHBITMAP)hbmp);
+ SetHBITMAP((WXHBITMAP)hbmp);
#if WXWIN_COMPATIBILITY_2
- GetBitmapData()->m_ok = hbmp != 0;
+ GetBitmapData()->m_ok = hbmp != 0;
#endif // WXWIN_COMPATIBILITY_2
+ }
+
return Ok();
}
+#if wxUSE_DIB_FOR_BITMAP
+
+void *wxBitmap::CreateDIB(int width, int height, int depth)
+{
+ void *dibBits;
+ const int infosize = sizeof(BITMAPINFOHEADER);
+
+ BITMAPINFO *info = (BITMAPINFO *)malloc(infosize);
+ if ( info )
+ {
+ memset(info, 0, infosize);
+
+ info->bmiHeader.biSize = infosize;
+ info->bmiHeader.biWidth = width;
+ info->bmiHeader.biHeight = height;
+ info->bmiHeader.biPlanes = 1;
+ info->bmiHeader.biBitCount = depth;
+ info->bmiHeader.biCompression = BI_RGB;
+ info->bmiHeader.biSizeImage =
+ (((width * (depth/8)) + sizeof(DWORD) - 1) /
+ sizeof(DWORD) * sizeof(DWORD)) * height;
+ info->bmiHeader.biXPelsPerMeter = 0;
+ info->bmiHeader.biYPelsPerMeter = 0;
+ info->bmiHeader.biClrUsed = 0;
+ info->bmiHeader.biClrImportant = 0;
+ GetBitmapData()->m_hFileMap = ::CreateFileMapping
+ (
+ INVALID_HANDLE_VALUE,
+ 0,
+ PAGE_READWRITE | SEC_COMMIT,
+ 0,
+ info->bmiHeader.biSizeImage,
+ 0
+ );
+
+ // No need to report an error here. If it fails, we just won't use a
+ // file mapping and CreateDIBSection will just allocate memory for us.
+ GetBitmapData()->m_handle =
+ (WXHANDLE)::CreateDIBSection
+ (
+ 0,
+ info,
+ DIB_RGB_COLORS,
+ &dibBits,
+ GetBitmapData()->m_hFileMap,
+ 0
+ );
+
+ if ( !GetBitmapData()->m_handle )
+ wxLogLastError(wxT("CreateDIBSection"));
+
+ SetWidth(width);
+ SetHeight(height);
+ SetDepth(depth);
+
+ free(info);
+ }
+ else
+ {
+ wxFAIL_MSG( wxT("could not allocate memory for DIB header") );
+
+ dibBits = NULL;
+ }
+
+ return dibBits;
+}
+
+#endif // wxUSE_DIB_FOR_BITMAP
+
// ----------------------------------------------------------------------------
// wxImage to/from conversions
// ----------------------------------------------------------------------------
// so the 'depth' argument is ignored.
HDC hScreenDC = ::GetDC(NULL);
- // printf("Screen planes = %d, bpp = %d\n", hScreenDC->psd->planes, hScreenDC->psd->bpp);
int screenDepth = ::GetDeviceCaps(hScreenDC, BITSPIXEL);
HBITMAP hBitmap = ::CreateCompatibleBitmap(hScreenDC, image.GetWidth(), image.GetHeight());
::SelectObject(hMaskDC, hOldMaskBitmap);
::DeleteDC(hMaskDC);
- ((wxBitmapRefData*)m_refData)->m_bitmapMask = new wxMask((WXHBITMAP) hMaskBitmap);
+ ((wxBitmapRefData*)m_refData)->SetMask(hMaskBitmap);
}
SetWidth(image.GetWidth());
return TRUE;
-#else
+#else // !__WXMICROWIN__
wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
m_refData = new wxBitmapRefData();
+#if wxUSE_DIB_FOR_BITMAP
+ int h = image.GetHeight();
+ int w = image.GetWidth();
+ unsigned char *dibBits = (unsigned char*)CreateDIB(w, h, 24);
+ if ( !dibBits )
+ return FALSE;
+
+ // DIBs are stored in bottom to top order so we need to copy bits line by
+ // line and starting from the end
+ const int srcBytesPerLine = w * 3;
+ const int dstBytesPerLine = (srcBytesPerLine + sizeof(DWORD) - 1) /
+ sizeof(DWORD) * sizeof(DWORD);
+ const unsigned char *src = image.GetData() + ((h - 1) * srcBytesPerLine);
+ for ( int i = 0; i < h; i++ )
+ {
+ // copy one DIB line
+ int x = w;
+ const unsigned char *rgbBits = src;
+ while ( x-- )
+ {
+ // also, the order of RGB is inversed for DIBs
+ *dibBits++ = rgbBits[2];
+ *dibBits++ = rgbBits[1];
+ *dibBits++ = rgbBits[0];
+
+ rgbBits += 3;
+ }
+
+ // pass to the next line
+ src -= srcBytesPerLine;
+ dibBits += dstBytesPerLine - srcBytesPerLine;
+ }
+
+ if ( image.HasMask() )
+ {
+ SetMask(new wxMask(*this, wxColour(image.GetMaskRed(),
+ image.GetMaskGreen(),
+ image.GetMaskBlue())));
+ }
+#else // wxUSE_DIB_FOR_BITMAP
// sizeLimit is the MS upper limit for the DIB size
#ifdef WIN32
int sizeLimit = 1024*768*3;
#else
- int sizeLimit = 0x7fff ;
+ int sizeLimit = 0x7fff;
#endif
// width and height of the device-dependent bitmap
::ReleaseDC(NULL, hdc);
free(lpDIBh);
free(lpBits);
+#endif // wxUSE_DIB_FOR_BITMAP
#if WXWIN_COMPATIBILITY_2
// check the wxBitmap object
#endif // WXWIN_COMPATIBILITY_2
return TRUE;
-#endif
+#endif // __WXMICROWIN__/!__WXMICROWIN__
}
wxImage wxBitmap::ConvertToImage() const
return image;
-#else // __MICROWIN__
-
+#else // !__WXMICROWIN__
wxImage image;
wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
free(lpBits);
return image;
-#endif
+#endif // __WXMICROWIN__/!__WXMICROWIN__
}
#endif // wxUSE_IMAGE
wxImage image;
if ( image.LoadFile( filename, type ) && image.Ok() )
{
- *this = image.ConvertToBitmap();
+ *this = wxBitmap(image);
return TRUE;
}
if ( !handler )
{
- wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for type %d defined."), type);
+ wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for type %ld defined."), type);
return FALSE;
}
else
{
// FIXME what about palette? shouldn't we use it?
- wxImage image( *this );
+ wxImage image = ConvertToImage();
if ( image.Ok() )
{
return image.SaveFile(filename, type);
// wxBitmap accessors
// ----------------------------------------------------------------------------
-void wxBitmap::SetQuality(int q)
+wxPalette* wxBitmap::GetPalette() const
{
- EnsureHasData();
+ return GetBitmapData() ? &GetBitmapData()->m_bitmapPalette
+ : (wxPalette *) NULL;
+}
- GetBitmapData()->m_quality = q;
+wxMask *wxBitmap::GetMask() const
+{
+ return GetBitmapData() ? GetBitmapData()->GetMask() : (wxMask *) NULL;
}
-#if WXWIN_COMPATIBILITY_2
-void wxBitmap::SetOk(bool isOk)
+wxDC *wxBitmap::GetSelectedInto() const
{
- EnsureHasData();
+ return GetBitmapData() ? GetBitmapData()->m_selectedInto : (wxDC *) NULL;
+}
- GetBitmapData()->m_ok = isOk;
+#if wxUSE_DIB_FOR_BITMAP
+
+bool wxBitmap::IsDIB() const
+{
+ return GetBitmapData() && GetBitmapData()->m_hFileMap != NULL;
+}
+
+#endif // wxUSE_DIB_FOR_BITMAP
+
+#if WXWIN_COMPATIBILITY_2_4
+
+int wxBitmap::GetQuality() const
+{
+ return 0;
+}
+
+#endif // WXWIN_COMPATIBILITY_2_4
+
+// ----------------------------------------------------------------------------
+// wxBitmap setters
+// ----------------------------------------------------------------------------
+
+void wxBitmap::SetSelectedInto(wxDC *dc)
+{
+ if ( GetBitmapData() )
+ GetBitmapData()->m_selectedInto = dc;
}
-#endif // WXWIN_COMPATIBILITY_2
#if wxUSE_PALETTE
{
EnsureHasData();
- GetBitmapData()->m_bitmapMask = mask;
+ 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))
+{
+}
+
+#endif // WXWIN_COMPATIBILITY_2_4
+
+// ----------------------------------------------------------------------------
+// TODO: to be replaced by something better
+// ----------------------------------------------------------------------------
+
// Creates a bitmap that matches the device context, from
// an arbitray bitmap. At present, the original bitmap must have an
// associated palette. TODO: use a default palette if no palette exists.
// scan the bitmap for the transparent colour and set the corresponding
// pixels in the mask to BLACK and the rest to WHITE
- COLORREF maskColour = RGB(colour.Red(), colour.Green(), colour.Blue());
+ COLORREF maskColour = wxColourToPalRGB(colour);
m_maskBitmap = (WXHBITMAP)::CreateBitmap(width, height, 1, 1, 0);
HDC srcDC = ::CreateCompatibleDC(NULL);
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