/////////////////////////////////////////////////////////////////////////////
-// Name: src/common/graphcmn.cpp
+// Name: src/common/dcgraph.cpp
// Purpose: graphics context methods common to all platforms
// Author: Stefan Csomor
// Modified by:
return (deg * M_PI) / 180.0;
}
+static wxCompositionMode TranslateRasterOp(wxRasterOperationMode function)
+{
+ switch ( function )
+ {
+ case wxCOPY: // src
+ // since we are supporting alpha, _OVER is closer to the intention than _SOURCE
+ // since the latter would overwrite even when alpha is not set to opaque
+ return wxCOMPOSITION_OVER;
+
+ case wxOR: // src OR dst
+ return wxCOMPOSITION_ADD;
+
+ case wxNO_OP: // dst
+ return wxCOMPOSITION_DEST; // ignore the source
+
+ case wxCLEAR: // 0
+ return wxCOMPOSITION_CLEAR;// clear dst
+
+ case wxXOR: // src XOR dst
+ return wxCOMPOSITION_XOR;
+
+ case wxAND: // src AND dst
+ case wxAND_INVERT: // (NOT src) AND dst
+ case wxAND_REVERSE:// src AND (NOT dst)
+ case wxEQUIV: // (NOT src) XOR dst
+ case wxINVERT: // NOT dst
+ case wxNAND: // (NOT src) OR (NOT dst)
+ case wxNOR: // (NOT src) AND (NOT dst)
+ case wxOR_INVERT: // (NOT src) OR dst
+ case wxOR_REVERSE: // src OR (NOT dst)
+ case wxSET: // 1
+ case wxSRC_INVERT: // NOT src
+ break;
+ }
+
+ return wxCOMPOSITION_INVALID;
+}
+
//-----------------------------------------------------------------------------
// wxDC bridge class
//-----------------------------------------------------------------------------
}
#endif
+#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
+wxGCDC::wxGCDC(const wxEnhMetaFileDC& dc)
+ : wxDC(new wxGCDCImpl(this, dc))
+{
+}
+#endif
+
wxGCDC::wxGCDC() :
wxDC( new wxGCDCImpl( this ) )
{
{
}
-wxGraphicsContext* wxGCDC::GetGraphicsContext()
+wxGraphicsContext* wxGCDC::GetGraphicsContext() const
{
if (!m_pimpl) return NULL;
wxGCDCImpl *gc_impl = (wxGCDCImpl*) m_pimpl;
wxDCImpl( owner )
{
Init();
- SetGraphicsContext( wxGraphicsContext::Create(dc) );
+ wxGraphicsContext* context;
+#if wxUSE_CAIRO
+ wxGraphicsRenderer* renderer = wxGraphicsRenderer::GetCairoRenderer();
+ context = renderer->CreateContext(dc);
+#else
+ context = wxGraphicsContext::Create(dc);
+#endif
+
+ SetGraphicsContext( context );
}
#if wxUSE_PRINTING_ARCHITECTURE
}
#endif
+#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
+wxGCDCImpl::wxGCDCImpl(wxDC *owner, const wxEnhMetaFileDC& dc)
+ : wxDCImpl(owner)
+{
+ Init();
+ SetGraphicsContext(wxGraphicsContext::Create(dc));
+}
+#endif
+
void wxGCDCImpl::Init()
{
m_ok = false;
m_font = *wxNORMAL_FONT;
m_brush = *wxWHITE_BRUSH;
- m_graphicContext = NULL;
+ m_graphicContext = wxGraphicsContext::Create();
m_logicalFunctionSupported = true;
}
void wxGCDCImpl::Flush()
{
-#ifdef __WXOSX_OR_COCOA__
- CGContextFlush( (CGContextRef) m_graphicContext->GetNativeContext() );
-#endif
+ m_graphicContext->Flush();
}
void wxGCDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
{
m_graphicContext->ResetClip();
// currently the clip eg of a window extends to the area between the scrollbars
- // so we must explicitely make sure it only covers the area we want it to draw
+ // so we must explicitly make sure it only covers the area we want it to draw
int width, height ;
GetOwner()->GetSize( &width , &height ) ;
m_graphicContext->Clip( DeviceToLogicalX(0) , DeviceToLogicalY(0) , DeviceToLogicalXRel(width), DeviceToLogicalYRel(height) );
return;
m_logicalFunction = function;
- if ( m_graphicContext->SetLogicalFunction( function ) )
- m_logicalFunctionSupported=true;
+
+ wxCompositionMode mode = TranslateRasterOp( function );
+ m_logicalFunctionSupported = mode != wxCOMPOSITION_INVALID;
+ if (m_logicalFunctionSupported)
+ m_logicalFunctionSupported = m_graphicContext->SetCompositionMode(mode);
+
+ if ( function == wxXOR )
+ m_graphicContext->SetAntialiasMode(wxANTIALIAS_NONE);
else
- m_logicalFunctionSupported=false;
+ m_graphicContext->SetAntialiasMode(wxANTIALIAS_DEFAULT);
}
bool wxGCDCImpl::DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
- const wxColour& WXUNUSED(col),
+ const wxColour& WXUNUSED(col),
wxFloodFillStyle WXUNUSED(style))
{
return false;
wxGraphicsPath path = m_graphicContext->CreatePath();
wxPointList::compatibility_iterator node = points->GetFirst();
- if (node == wxPointList::compatibility_iterator())
+ if ( !node )
// empty list
return;
path.MoveToPoint( x1 , y1 );
path.AddLineToPoint( cx1 , cy1 );
-#if !wxUSE_STL
+#if !wxUSE_STD_CONTAINERS
while ((node = node->GetNext()) != NULL)
#else
while ((node = node->GetNext()))
-#endif // !wxUSE_STL
+#endif // !wxUSE_STD_CONTAINERS
{
p = node->GetData();
bool wxGCDCImpl::DoBlit(
wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
- wxDC *source, wxCoord xsrc, wxCoord ysrc,
+ wxDC *source, wxCoord xsrc, wxCoord ysrc,
wxRasterOperationMode logical_func , bool useMask,
wxCoord xsrcMask, wxCoord ysrcMask )
{
if ( logical_func == wxNO_OP )
return true;
- else if ( !m_graphicContext->SetLogicalFunction( logical_func ) )
- {
- wxFAIL_MSG( wxT("Blitting is only supported with wxCOPY logical operation.") );
- return false;
- }
- if (xsrcMask == -1 && ysrcMask == -1)
+ wxCompositionMode mode = TranslateRasterOp(logical_func);
+ if ( mode == wxCOMPOSITION_INVALID )
{
- xsrcMask = xsrc;
- ysrcMask = ysrc;
+ wxFAIL_MSG( wxT("Blitting is not supported with this logical operation.") );
+ return false;
}
wxRect subrect(source->LogicalToDeviceX(xsrc),
source->LogicalToDeviceY(ysrc),
source->LogicalToDeviceXRel(srcWidth),
source->LogicalToDeviceYRel(srcHeight));
+ // clip the subrect down to the size of the source DC
+ wxRect clip;
+ source->GetSize(&clip.width, &clip.height);
+ subrect.Intersect(clip);
+ if (subrect.width == 0)
+ return true;
- // if needed clip the subrect down to the size of the source DC
- wxCoord sw, sh;
- source->GetSize(&sw, &sh);
- sw = source->LogicalToDeviceXRel(sw);
- sh = source->LogicalToDeviceYRel(sh);
- if (subrect.x + subrect.width > sw)
- subrect.width = sw - subrect.x;
- if (subrect.y + subrect.height > sh)
- subrect.height = sh - subrect.y;
-
- wxBitmap blit = source->GetAsBitmap( &subrect );
+ bool retval = true;
- if ( blit.IsOk() )
+ wxCompositionMode formerMode = m_graphicContext->GetCompositionMode();
+ if (m_graphicContext->SetCompositionMode(mode))
{
- if ( !useMask && blit.GetMask() )
- blit.SetMask(NULL);
+ wxAntialiasMode formerAa = m_graphicContext->GetAntialiasMode();
+ if (mode == wxCOMPOSITION_XOR)
+ {
+ m_graphicContext->SetAntialiasMode(wxANTIALIAS_NONE);
+ }
- m_graphicContext->DrawBitmap( blit, xdest, ydest,
- dstWidth, dstHeight);
- }
- else
- {
- wxFAIL_MSG( wxT("Cannot Blit. Unable to get contents of DC as bitmap.") );
- return false;
- }
+ if (xsrcMask == -1 && ysrcMask == -1)
+ {
+ xsrcMask = xsrc;
+ ysrcMask = ysrc;
+ }
- // reset logical function
- m_graphicContext->SetLogicalFunction( m_logicalFunction );
+ wxBitmap blit = source->GetAsBitmap( &subrect );
- return true;
+ if ( blit.IsOk() )
+ {
+ if ( !useMask && blit.GetMask() )
+ blit.SetMask(NULL);
+
+ m_graphicContext->DrawBitmap( blit, xdest, ydest,
+ dstWidth, dstHeight);
+ }
+ else
+ {
+ wxFAIL_MSG( wxT("Cannot Blit. Unable to get contents of DC as bitmap.") );
+ retval = false;
+ }
+
+ if (mode == wxCOMPOSITION_XOR)
+ {
+ m_graphicContext->SetAntialiasMode(formerAa);
+ }
+ }
+ // reset composition
+ m_graphicContext->SetCompositionMode(formerMode);
+
+ return retval;
}
void wxGCDCImpl::DoDrawRotatedText(const wxString& str, wxCoord x, wxCoord y,
{
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawRotatedText - invalid DC") );
- if ( str.length() == 0 )
+ if ( str.empty() )
return;
if ( !m_logicalFunctionSupported )
return;
void wxGCDCImpl::DoDrawText(const wxString& str, wxCoord x, wxCoord y)
{
+ // For compatibility with other ports (notably wxGTK) and because it's
+ // genuinely useful, we allow passing multiline strings to DrawText().
+ // However there is no native OSX function to draw them directly so we
+ // instead reuse the generic DrawLabel() method to render them. Of course,
+ // DrawLabel() itself will call back to us but with single line strings
+ // only so there won't be any infinite recursion here.
+ if ( str.find('\n') != wxString::npos )
+ {
+ GetOwner()->DrawLabel(str, wxRect(x, y, 0, 0));
+ return;
+ }
+
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawText - invalid DC") );
- if ( str.length() == 0 )
+ if ( str.empty() )
return;
if ( !m_logicalFunctionSupported )
wxCoord *descent, wxCoord *externalLeading ,
const wxFont *theFont ) const
{
- wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoGetTextExtent - invalid DC") );
+ wxCHECK_RET( m_graphicContext, wxT("wxGCDC(cg)::DoGetTextExtent - invalid DC") );
if ( theFont )
{
bool wxGCDCImpl::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
{
- wxCHECK_MSG( IsOk(), false, wxT("wxGCDC(cg)::DoGetPartialTextExtents - invalid DC") );
+ wxCHECK_MSG( m_graphicContext, false, wxT("wxGCDC(cg)::DoGetPartialTextExtents - invalid DC") );
widths.Clear();
widths.Add(0,text.Length());
if ( text.IsEmpty() )
m_graphicContext->SetBrush( m_backgroundBrush );
wxPen p = *wxTRANSPARENT_PEN;
m_graphicContext->SetPen( p );
+ wxCompositionMode formerMode = m_graphicContext->GetCompositionMode();
+ m_graphicContext->SetCompositionMode(wxCOMPOSITION_SOURCE);
DoDrawRectangle( 0, 0, 32000 , 32000 );
+ m_graphicContext->SetCompositionMode(formerMode);
m_graphicContext->SetPen( m_pen );
m_graphicContext->SetBrush( m_brush );
}
wxDCImpl::DoDrawCheckMark(x,y,width,height);
}
+#ifdef __WXMSW__
+wxRect wxGCDCImpl::MSWApplyGDIPlusTransform(const wxRect& r) const
+{
+ wxGraphicsContext* const gc = GetGraphicsContext();
+ wxCHECK_MSG( gc, r, wxT("Invalid wxGCDC") );
+
+ double x = 0,
+ y = 0;
+ gc->GetTransform().TransformPoint(&x, &y);
+
+ wxRect rect(r);
+ rect.Offset(x, y);
+
+ return rect;
+}
+#endif // __WXMSW__
+
#endif // wxUSE_GRAPHICS_CONTEXT
projects / wxWidgets.git / blobdiff