void wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style)
{
- (void)ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
- col.GetPixel(),
- style == wxFLOOD_SURFACE ? FLOODFILLSURFACE
- : FLOODFILLBORDER);
+ if ( !::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
+ col.GetPixel(),
+ style == wxFLOOD_SURFACE ? FLOODFILLSURFACE
+ : FLOODFILLBORDER) )
+ {
+ // quoting from the MSDN docs:
+ //
+ // Following are some of the reasons this function might fail:
+ //
+ // * The filling could not be completed.
+ // * The specified point has the boundary color specified by the
+ // crColor parameter (if FLOODFILLBORDER was requested).
+ // * The specified point does not have the color specified by
+ // crColor (if FLOODFILLSURFACE was requested)
+ // * The point is outside the clipping region that is, it is not
+ // visible on the device.
+ //
+ wxLogLastError("ExtFloodFill");
+ }
CalcBoundingBox(x, y);
}
bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
{
- // added by steve 29.12.94 (copied from DrawPoint)
- // returns TRUE for pixels in the color of the current pen
- // and FALSE for all other pixels colors
- // if col is non-NULL return the color of the pixel
-
// get the color of the pixel
COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y));
+
// get the color of the pen
COLORREF pencolor = 0x00ffffff;
if (m_pen.Ok())
}
// return the color of the pixel
- if(col)
- col->Set(GetRValue(pixelcolor),GetGValue(pixelcolor),GetBValue(pixelcolor));
+ if( col )
+ {
+ col->Set(GetRValue(pixelcolor),
+ GetGValue(pixelcolor),
+ GetBValue(pixelcolor));
+ }
- // check, if color of the pixels is the same as the color
- // of the current pen
- return(pixelcolor==pencolor);
+ // check, if color of the pixels is the same as the color of the current
+ // pen and return TRUE if it is, FALSE otherwise
+ return pixelcolor == pencolor;
}
void wxDC::DoCrossHair(wxCoord x, wxCoord y)
void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
- COLORREF old_textground = ::GetTextColor(GetHdc());
- COLORREF old_background = ::GetBkColor(GetHdc());
- if (m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE)
+ COLORREF colFgOld = 0,
+ colBgOld = 0;
+
+ if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
{
+ colFgOld = ::GetTextColor(GetHdc());
+ colBgOld = ::GetBkColor(GetHdc());
- if (m_textForegroundColour.Ok())
- { //just the oposite from what is expected see help on pattern brush
- // 1 in mask becomes bk color
- ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel() );
- }
- if (m_textBackgroundColour.Ok())
- { //just the oposite from what is expected
- // 0 in mask becomes text color
- ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel() );
- }
+ if ( m_textForegroundColour.Ok() )
+ {
+ // just the oposite from what is expected see help on pattern brush
+ // 1 in mask becomes bk color
+ ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel());
+ }
- if (m_backgroundMode == wxTRANSPARENT)
- SetBkMode(GetHdc(), TRANSPARENT);
- else
- SetBkMode(GetHdc(), OPAQUE);
+ if ( m_textBackgroundColour.Ok() )
+ {
+ // 0 in mask becomes text color
+ ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel());
+ }
+
+ // VZ: IMHO this does strictly nothing here
+ SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
+ : OPAQUE);
}
wxCoord x2 = x + width;
wxCoord y2 = y + height;
- /* MATTHEW: [6] new normalization */
-#if WX_STANDARD_GRAPHICS
- bool do_brush, do_pen;
-
- do_brush = m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT;
- do_pen = m_pen.Ok() && m_pen.GetStyle() != wxTRANSPARENT;
-
- if (do_brush) {
- HPEN orig_pen = NULL;
-
- if (do_pen || !m_pen.Ok())
- orig_pen = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN));
-
- (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
- XLOG2DEV(x2) + 1, YLOG2DEV(y2) + 1);
-
- if (do_pen || !m_pen.Ok())
- ::SelectObject(GetHdc() , orig_pen);
+ // Windows draws the filled rectangles without outline (i.e. drawn with a
+ // transparent pen) one pixel smaller in both directions and we want them
+ // to have the same size regardless of which pen is used - adjust
+ if ( m_pen.GetStyle() == wxTRANSPARENT )
+ {
+ x2++;
+ y2++;
}
- if (do_pen) {
- HBRUSH orig_brush = NULL;
-
- if (do_brush || !m_brush.Ok())
- orig_brush = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH) ::GetStockObject(NULL_BRUSH));
-
- (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
- XLOG2DEV(x2), YLOG2DEV(y2));
- if (do_brush || !m_brush.Ok())
- ::SelectObject(GetHdc(), orig_brush);
- }
-#else
(void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
-#endif
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
- if (m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE)
+ if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
{
- ::SetBkMode(GetHdc(), TRANSPARENT);
- ::SetTextColor(GetHdc(), old_textground);
- ::SetBkColor(GetHdc(), old_background);
+ // restore the colours we changed
+ ::SetBkMode(GetHdc(), TRANSPARENT);
+ ::SetTextColor(GetHdc(), colFgOld);
+ ::SetBkColor(GetHdc(), colBgOld);
}
}
int width = bmp.GetWidth(),
height = bmp.GetHeight();
- if ( !useMask )
+ HBITMAP hbmpMask = 0;
+
+ if ( useMask )
+ {
+ wxMask *mask = bmp.GetMask();
+ if ( mask )
+ hbmpMask = (HBITMAP)mask->GetMaskBitmap();
+
+ if ( !hbmpMask )
+ {
+ // don't give assert here because this would break existing
+ // programs - just silently ignore useMask parameter
+ useMask = FALSE;
+ }
+ }
+
+ if ( useMask )
+ {
+#ifdef __WIN32__
+ HDC hdcMem = ::CreateCompatibleDC(GetHdc());
+ ::SelectObject(hdcMem, GetHbitmapOf(bmp));
+
+ // this will only work if the transparent part of our bitmap is black
+ // because it is combined with the destination rectangle using OR, so
+ // it won't be really transparent otherwise - I don't know what to do
+ // about it, may be use MAKEROP4(SRCCOPY, DSTINVERT) twice? Or create a
+ // copy of the bitmap with the transparent part replaced with black
+ // pixels?
+
+ // GRG: now this works regardless of what the source bitmap
+ // contains in the area which is to be transparent.
+ //
+ bool ok = ::MaskBlt(GetHdc(), x, y, width, height,
+ hdcMem, 0, 0,
+ hbmpMask, 0, 0,
+ MAKEROP4(SRCCOPY, 0x00AA0029)) != 0;
+ ::DeleteDC(hdcMem);
+
+ if ( !ok )
+#endif // Win32
+ {
+ // VZ: this is incorrect, Blit() doesn't (and can't) draw
+ // transparently, but it's still better than nothing at all
+ // GRG: Blit() *should* draw transparently when there is a mask
+
+ // Rather than reproduce wxDC::Blit, let's do it at the wxWin API level
+ wxMemoryDC memDC;
+ memDC.SelectObject(bmp);
+
+ Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask);
+
+ memDC.SelectObject(wxNullBitmap);
+ }
+ }
+ else // no mask, just use BitBlt()
{
HDC cdc = GetHdc();
HDC memdc = ::CreateCompatibleDC( cdc );
::SetTextColor(GetHdc(), old_textground);
::SetBkColor(GetHdc(), old_background);
}
- else
- {
- // Rather than reproduce wxDC::Blit, let's do it at the wxWin API level
- wxMemoryDC memDC;
- memDC.SelectObject(bmp);
-
- Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask);
-
- memDC.SelectObject(wxNullBitmap);
- }
}
void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
DrawAnyText(text, x, y);
(void)::SelectObject(GetHdc(), hfontOld);
+ (void)::DeleteObject(hfont);
}
// call the bounding box by adding all four vertices of the rectangle
{
m_logicalFunction = function;
- SetRop((WXHDC) m_hDC);
+ SetRop(m_hDC);
}
void wxDC::SetRop(WXHDC dc)
{
- if (!dc || m_logicalFunction < 0)
+ if ( !dc || m_logicalFunction < 0 )
return;
- int c_rop;
- // These may be wrong
+ int rop;
+
switch (m_logicalFunction)
{
- // case wxXOR: c_rop = R2_XORPEN; break;
- case wxXOR: c_rop = R2_NOTXORPEN; break;
- case wxINVERT: c_rop = R2_NOT; break;
- case wxOR_REVERSE: c_rop = R2_MERGEPENNOT; break;
- case wxAND_REVERSE: c_rop = R2_MASKPENNOT; break;
- case wxCLEAR: c_rop = R2_WHITE; break;
- case wxSET: c_rop = R2_BLACK; break;
- case wxSRC_INVERT: c_rop = R2_NOTCOPYPEN; break;
- case wxOR_INVERT: c_rop = R2_MERGENOTPEN; break;
- case wxAND: c_rop = R2_MASKPEN; break;
- case wxOR: c_rop = R2_MERGEPEN; break;
- case wxAND_INVERT: c_rop = R2_MASKNOTPEN; break;
- case wxEQUIV:
- case wxNAND:
- case wxCOPY:
- default:
- c_rop = R2_COPYPEN; break;
+ case wxXOR: rop = R2_XORPEN; break;
+ case wxINVERT: rop = R2_NOT; break;
+ case wxOR_REVERSE: rop = R2_MERGEPENNOT; break;
+ case wxAND_REVERSE: rop = R2_MASKPENNOT; break;
+ case wxCLEAR: rop = R2_WHITE; break;
+ case wxSET: rop = R2_BLACK; break;
+ case wxOR_INVERT: rop = R2_MERGENOTPEN; break;
+ case wxAND: rop = R2_MASKPEN; break;
+ case wxOR: rop = R2_MERGEPEN; break;
+ case wxEQUIV: rop = R2_NOTXORPEN; break;
+ case wxNAND: rop = R2_NOTMASKPEN; break;
+ case wxAND_INVERT: rop = R2_MASKNOTPEN; break;
+ case wxCOPY: rop = R2_COPYPEN; break;
+ case wxNO_OP: rop = R2_NOP; break;
+ case wxSRC_INVERT: rop = R2_NOTCOPYPEN; break;
+ case wxNOR: rop = R2_NOTMERGEPEN; break;
+ default:
+ wxFAIL_MSG( wxT("unsupported logical function") );
+ return;
}
- SetROP2((HDC) dc, c_rop);
+
+ SetROP2(GetHdc(), rop);
}
bool wxDC::StartDoc(const wxString& message)
const wxBitmap& bmp = source->m_selectedBitmap;
mask = bmp.GetMask();
- wxCHECK_MSG( bmp.Ok() && mask && mask->GetMaskBitmap(), FALSE,
- _T("can't blit with mask without mask") );
+ if ( !(bmp.Ok() && mask && mask->GetMaskBitmap()) )
+ {
+ // don't give assert here because this would break existing
+ // programs - just silently ignore useMask parameter
+ useMask = FALSE;
+ }
}
COLORREF old_textground = ::GetTextColor(GetHdc());
::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
}
- DWORD dwRop = rop == wxCOPY ? SRCCOPY :
- rop == wxCLEAR ? WHITENESS :
- rop == wxSET ? BLACKNESS :
- rop == wxINVERT ? DSTINVERT :
- rop == wxAND ? MERGECOPY :
- rop == wxOR ? MERGEPAINT :
- rop == wxSRC_INVERT ? NOTSRCCOPY :
- rop == wxXOR ? SRCINVERT :
- rop == wxOR_REVERSE ? MERGEPAINT :
- rop == wxAND_REVERSE ? SRCERASE :
- rop == wxSRC_OR ? SRCPAINT :
- rop == wxSRC_AND ? SRCAND :
- SRCCOPY;
+ DWORD dwRop = SRCCOPY;
+ switch (rop)
+ {
+ case wxXOR: dwRop = SRCINVERT; break;
+ case wxINVERT: dwRop = DSTINVERT; break;
+ case wxOR_REVERSE: dwRop = 0x00DD0228; break;
+ case wxAND_REVERSE: dwRop = SRCERASE; break;
+ case wxCLEAR: dwRop = BLACKNESS; break;
+ case wxSET: dwRop = WHITENESS; break;
+ case wxOR_INVERT: dwRop = MERGEPAINT; break;
+ case wxAND: dwRop = SRCAND; break;
+ case wxOR: dwRop = SRCPAINT; break;
+ case wxEQUIV: dwRop = 0x00990066; break;
+ case wxNAND: dwRop = 0x007700E6; break;
+ case wxAND_INVERT: dwRop = 0x00220326; break;
+ case wxCOPY: dwRop = SRCCOPY; break;
+ case wxNO_OP: dwRop = 0x00AA0029; break;
+ case wxSRC_INVERT: dwRop = NOTSRCCOPY; break;
+ case wxNOR: dwRop = NOTSRCCOPY; break;
+ default:
+ wxFAIL_MSG( wxT("unsupported logical function") );
+ return FALSE;
+ }
bool success;
if (useMask)
{
#ifdef __WIN32__
+ // prepare the mask bitmap
HBITMAP hbmpMask = wxInvertMask((HBITMAP)mask->GetMaskBitmap());
+ // select the correct brush: the current one by default, background one
+ // if none
+ HBRUSH hbrNew;
+ if ( m_brush.Ok() )
+ {
+ hbrNew = (HBRUSH)m_brush.GetResourceHandle();
+ }
+ else if ( m_backgroundBrush.Ok() )
+ {
+ hbrNew = (HBRUSH)m_backgroundBrush.GetResourceHandle();
+ }
+ else
+ {
+ hbrNew = 0;
+ }
+
+ HGDIOBJ hbrOld = hbrNew ? ::SelectObject(GetHdc(), hbrNew) : 0;
+
// we want the part of the image corresponding to the mask to be
// transparent, i.e. do PATCOPY there and apply dwRop elsewhere
- const wxColour& colBg = m_backgroundBrush.GetColour();
- HBRUSH hbrBg = (HBRUSH)::CreateSolidBrush(wxColourToRGB(colBg));
- HBRUSH hbrOld = (HBRUSH)::SelectObject(GetHdc(), hbrBg);
+ // GRG: PATCOPY is not transparent, as can be seen when blitting
+ // over a pattern: the 'transparent' area would be filled
+ // with the selected colour. We should use NOP instead, or
+ // do MaskBlt + BitBlt.
+ //
success = ::MaskBlt(GetHdc(), xdest, ydest, width, height,
GetHdcOf(*source), xsrc, ysrc,
hbmpMask, 0, 0,
- MAKEROP4(PATCOPY, dwRop)) != 0;
+ MAKEROP4(0x00AA0029, dwRop)) != 0;
+
+ if ( hbrNew )
+ {
+ (void)::SelectObject(GetHdc(), hbrOld);
+ }
- (void)::SelectObject(GetHdc(), hbrOld);
- ::DeleteObject(hbrOld);
::DeleteObject(hbmpMask);
if ( !success )
wxLogLastError("BitBlt");
}
}
-
::SetTextColor(GetHdc(), old_textground);
::SetBkColor(GetHdc(), old_background);
projects / wxWidgets.git / blobdiff