X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/03647350fc7cd141953c72e0284e928847d30f44..08670ea85abf4b4946a9ce64971b591d7b1ee30b:/src/common/dcgraph.cpp diff --git a/src/common/dcgraph.cpp b/src/common/dcgraph.cpp index 8de2da6817..9dc59efb53 100644 --- a/src/common/dcgraph.cpp +++ b/src/common/dcgraph.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: src/common/graphcmn.cpp +// Name: src/common/dcgraph.cpp // Purpose: graphics context methods common to all platforms // Author: Stefan Csomor // Modified by: @@ -53,25 +53,26 @@ static inline double DegToRad(double deg) return (deg * M_PI) / 180.0; } -static bool TranslateRasterOp(wxRasterOperationMode function, wxCompositionMode *op) +static wxCompositionMode TranslateRasterOp(wxRasterOperationMode function) { switch ( function ) { - case wxCOPY: // (default) src - *op = wxCOMPOSITION_SOURCE; // - break; + 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 - *op = wxCOMPOSITION_ADD; - break; + return wxCOMPOSITION_ADD; + case wxNO_OP: // dst - *op = wxCOMPOSITION_DEST; // ignore the source - break; + return wxCOMPOSITION_DEST; // ignore the source + case wxCLEAR: // 0 - *op = wxCOMPOSITION_CLEAR;// clear dst - break; + return wxCOMPOSITION_CLEAR;// clear dst + case wxXOR: // src XOR dst - *op = wxCOMPOSITION_XOR; - break; + return wxCOMPOSITION_XOR; case wxAND: // src AND dst case wxAND_INVERT: // (NOT src) AND dst @@ -84,10 +85,10 @@ static bool TranslateRasterOp(wxRasterOperationMode function, wxCompositionMode case wxOR_REVERSE: // src OR (NOT dst) case wxSET: // 1 case wxSRC_INVERT: // NOT src - default: - return false; + break; } - return true; + + return wxCOMPOSITION_INVALID; } //----------------------------------------------------------------------------- @@ -113,6 +114,19 @@ wxGCDC::wxGCDC( const wxPrinterDC& dc) : } #endif +#if defined(__WXMSW__) && wxUSE_ENH_METAFILE +wxGCDC::wxGCDC(const wxEnhMetaFileDC& dc) + : wxDC(new wxGCDCImpl(this, dc)) +{ +} +#endif + +wxGCDC::wxGCDC(wxGraphicsContext* context) : + wxDC( new wxGCDCImpl( this ) ) +{ + SetGraphicsContext(context); +} + wxGCDC::wxGCDC() : wxDC( new wxGCDCImpl( this ) ) { @@ -122,7 +136,7 @@ wxGCDC::~wxGCDC() { } -wxGraphicsContext* wxGCDC::GetGraphicsContext() +wxGraphicsContext* wxGCDC::GetGraphicsContext() const { if (!m_pimpl) return NULL; wxGCDCImpl *gc_impl = (wxGCDCImpl*) m_pimpl; @@ -172,7 +186,9 @@ wxGCDCImpl::wxGCDCImpl( wxDC *owner, const wxMemoryDC& dc ) : wxDCImpl( owner ) { Init(); - SetGraphicsContext( wxGraphicsContext::Create(dc) ); + wxGraphicsContext* context; + context = wxGraphicsContext::Create(dc); + SetGraphicsContext( context ); } #if wxUSE_PRINTING_ARCHITECTURE @@ -184,6 +200,15 @@ wxGCDCImpl::wxGCDCImpl( wxDC *owner, const wxPrinterDC& dc ) : } #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; @@ -195,7 +220,7 @@ void wxGCDCImpl::Init() m_font = *wxNORMAL_FONT; m_brush = *wxWHITE_BRUSH; - m_graphicContext = NULL; + m_graphicContext = wxGraphicsContext::Create(); m_logicalFunctionSupported = true; } @@ -265,9 +290,7 @@ void wxGCDCImpl::EndPage() 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 ) @@ -333,7 +356,7 @@ void wxGCDCImpl::DestroyClippingRegion() { 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) ); @@ -359,7 +382,10 @@ void wxGCDCImpl::SetTextForeground( const wxColour &col ) { wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::SetTextForeground - invalid DC") ); - if ( col != m_textForegroundColour ) + // don't set m_textForegroundColour to an invalid colour as we'd crash + // later then (we use m_textForegroundColour.GetColor() without checking + // in a few places) + if ( col.IsOk() && col != m_textForegroundColour ) { m_textForegroundColour = col; m_graphicContext->SetFont( m_font, m_textForegroundColour ); @@ -450,12 +476,6 @@ void wxGCDCImpl::SetFont( const wxFont &font ) if ( f.IsOk() ) f.SetPointSize( /*LogicalToDeviceYRel*/(font.GetPointSize())); m_graphicContext->SetFont( f, m_textForegroundColour ); -#if defined(__WXGTK__) || defined(__WXOSX__) - if ( m_font.IsOk() && m_font.GetNoAntiAliasing() ) - { - m_graphicContext->SetAntialiasMode(wxANTIALIAS_NONE); - } -#endif } } @@ -500,12 +520,12 @@ void wxGCDCImpl::SetLogicalFunction( wxRasterOperationMode function ) m_logicalFunction = function; - wxCompositionMode mode; - m_logicalFunctionSupported = TranslateRasterOp( function, &mode); + wxCompositionMode mode = TranslateRasterOp( function ); + m_logicalFunctionSupported = mode != wxCOMPOSITION_INVALID; if (m_logicalFunctionSupported) m_logicalFunctionSupported = m_graphicContext->SetCompositionMode(mode); - if (mode == wxCOMPOSITION_XOR) + if ( function == wxXOR ) m_graphicContext->SetAntialiasMode(wxANTIALIAS_NONE); else m_graphicContext->SetAntialiasMode(wxANTIALIAS_DEFAULT); @@ -675,7 +695,7 @@ void wxGCDCImpl::DoDrawSpline(const wxPointList *points) wxGraphicsPath path = m_graphicContext->CreatePath(); wxPointList::compatibility_iterator node = points->GetFirst(); - if (node == wxPointList::compatibility_iterator()) + if ( !node ) // empty list return; @@ -694,13 +714,13 @@ void wxGCDCImpl::DoDrawSpline(const wxPointList *points) 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(); @@ -872,13 +892,24 @@ bool wxGCDCImpl::DoStretchBlit( if ( logical_func == wxNO_OP ) return true; - wxCompositionMode mode; - if ( !TranslateRasterOp(logical_func, &mode) ) + wxCompositionMode mode = TranslateRasterOp(logical_func); + if ( mode == wxCOMPOSITION_INVALID ) { 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; + bool retval = true; wxCompositionMode formerMode = m_graphicContext->GetCompositionMode(); @@ -896,21 +927,6 @@ bool wxGCDCImpl::DoStretchBlit( ysrcMask = ysrc; } - wxRect subrect(source->LogicalToDeviceX(xsrc), - source->LogicalToDeviceY(ysrc), - source->LogicalToDeviceXRel(srcWidth), - source->LogicalToDeviceYRel(srcHeight)); - - // 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 ); if ( blit.IsOk() ) @@ -943,7 +959,7 @@ 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; @@ -956,9 +972,21 @@ void wxGCDCImpl::DoDrawRotatedText(const wxString& str, wxCoord x, wxCoord y, 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 ) @@ -981,7 +1009,7 @@ void wxGCDCImpl::DoGetTextExtent( const wxString &str, wxCoord *width, wxCoord * 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 ) { @@ -1009,7 +1037,7 @@ void wxGCDCImpl::DoGetTextExtent( const wxString &str, wxCoord *width, wxCoord * 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() ) @@ -1047,7 +1075,10 @@ void wxGCDCImpl::Clear(void) 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 ); } @@ -1140,4 +1171,21 @@ void wxGCDCImpl::DoDrawCheckMark(wxCoord x, wxCoord y, 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