--- /dev/null
+/////////////////////////////////////////////////////////////////////////////
+// Name: src/common/graphcmn.cpp
+// Purpose: graphics context methods common to all platforms
+// Author: Stefan Csomor
+// Modified by:
+// Created:
+// RCS-ID: $Id$
+// Copyright: (c) Stefan Csomor
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if defined(__BORLANDC__)
+ #pragma hdrstop
+#endif
+
+#if wxUSE_GRAPHICS_CONTEXT
+
+#include "wx/graphics.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/icon.h"
+ #include "wx/bitmap.h"
+ #include "wx/dcmemory.h"
+ #include "wx/region.h"
+#endif
+
+//-----------------------------------------------------------------------------
+// constants
+//-----------------------------------------------------------------------------
+
+static const double RAD2DEG = 180.0 / M_PI;
+
+//-----------------------------------------------------------------------------
+// Local functions
+//-----------------------------------------------------------------------------
+
+static inline double DegToRad(double deg)
+{
+ return (deg * M_PI) / 180.0;
+}
+
+//-----------------------------------------------------------------------------
+// wxDC bridge class
+//-----------------------------------------------------------------------------
+
+#ifdef __WXMAC__
+IMPLEMENT_DYNAMIC_CLASS(wxGCDC, wxDCBase)
+#else
+IMPLEMENT_DYNAMIC_CLASS(wxGCDC, wxDC)
+#endif
+
+wxGCDC::wxGCDC()
+{
+ Init();
+}
+
+void wxGCDC::SetGraphicsContext( wxGraphicsContext* ctx )
+{
+ delete m_graphicContext;
+ m_graphicContext = ctx;
+}
+
+wxGCDC::wxGCDC(const wxWindowDC& dc)
+{
+ Init();
+ m_graphicContext = wxGraphicsContext::Create(dc);
+ m_ok = true;
+ if ( dc.GetFont().Ok())
+ m_graphicContext->SetFont( m_graphicContext->CreateFont(dc.GetFont(),dc.GetTextForeground()));
+ if ( dc.GetPen().Ok())
+ m_graphicContext->SetPen( m_graphicContext->CreatePen(dc.GetPen()));
+ if ( dc.GetBrush().Ok())
+ m_graphicContext->SetBrush( m_graphicContext->CreateBrush(dc.GetBrush()));
+}
+
+void wxGCDC::Init()
+{
+ m_ok = false;
+ m_colour = true;
+ m_mm_to_pix_x = mm2pt;
+ m_mm_to_pix_y = mm2pt;
+
+ m_pen = *wxBLACK_PEN;
+ m_font = *wxNORMAL_FONT;
+ m_brush = *wxWHITE_BRUSH;
+
+ m_graphicContext = NULL;
+}
+
+
+wxGCDC::~wxGCDC()
+{
+ delete m_graphicContext;
+}
+
+void wxGCDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool WXUNUSED(useMask) )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawBitmap - invalid DC") );
+ wxCHECK_RET( bmp.Ok(), wxT("wxGCDC(cg)::DoDrawBitmap - invalid bitmap") );
+
+ wxCoord xx = LogicalToDeviceX(x);
+ wxCoord yy = LogicalToDeviceY(y);
+ wxCoord w = bmp.GetWidth();
+ wxCoord h = bmp.GetHeight();
+ wxCoord ww = LogicalToDeviceXRel(w);
+ wxCoord hh = LogicalToDeviceYRel(h);
+
+ m_graphicContext->DrawBitmap( bmp, xx , yy , ww , hh );
+}
+
+void wxGCDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawIcon - invalid DC") );
+ wxCHECK_RET( icon.Ok(), wxT("wxGCDC(cg)::DoDrawIcon - invalid icon") );
+
+ wxCoord xx = LogicalToDeviceX(x);
+ wxCoord yy = LogicalToDeviceY(y);
+ wxCoord w = icon.GetWidth();
+ wxCoord h = icon.GetHeight();
+ wxCoord ww = LogicalToDeviceXRel(w);
+ wxCoord hh = LogicalToDeviceYRel(h);
+
+ m_graphicContext->DrawIcon( icon , xx, yy, ww, hh );
+}
+
+void wxGCDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoSetClippingRegion - invalid DC") );
+
+ wxCoord xx, yy, ww, hh;
+ xx = LogicalToDeviceX(x);
+ yy = LogicalToDeviceY(y);
+ ww = LogicalToDeviceXRel(width);
+ hh = LogicalToDeviceYRel(height);
+
+ m_graphicContext->Clip( xx, yy, ww, hh );
+ if ( m_clipping )
+ {
+ m_clipX1 = wxMax( m_clipX1, xx );
+ m_clipY1 = wxMax( m_clipY1, yy );
+ m_clipX2 = wxMin( m_clipX2, (xx + ww) );
+ m_clipY2 = wxMin( m_clipY2, (yy + hh) );
+ }
+ else
+ {
+ m_clipping = true;
+
+ m_clipX1 = xx;
+ m_clipY1 = yy;
+ m_clipX2 = xx + ww;
+ m_clipY2 = yy + hh;
+ }
+}
+
+void wxGCDC::DoSetClippingRegionAsRegion( const wxRegion ®ion )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoSetClippingRegionAsRegion - invalid DC") );
+
+ if (region.Empty())
+ {
+ DestroyClippingRegion();
+ return;
+ }
+
+ wxCoord x, y, w, h;
+ region.GetBox( x, y, w, h );
+ wxCoord xx, yy, ww, hh;
+ xx = LogicalToDeviceX(x);
+ yy = LogicalToDeviceY(y);
+ ww = LogicalToDeviceXRel(w);
+ hh = LogicalToDeviceYRel(h);
+
+ // if we have a scaling that we cannot map onto native regions
+ // we must use the box
+ if ( ww != w || hh != h )
+ {
+ wxGCDC::DoSetClippingRegion( x, y, w, h );
+ }
+ else
+ {
+ m_graphicContext->Clip( region );
+ if ( m_clipping )
+ {
+ m_clipX1 = wxMax( m_clipX1, xx );
+ m_clipY1 = wxMax( m_clipY1, yy );
+ m_clipX2 = wxMin( m_clipX2, (xx + ww) );
+ m_clipY2 = wxMin( m_clipY2, (yy + hh) );
+ }
+ else
+ {
+ m_clipping = true;
+
+ m_clipX1 = xx;
+ m_clipY1 = yy;
+ m_clipX2 = xx + ww;
+ m_clipY2 = yy + hh;
+ }
+ }
+}
+
+void wxGCDC::DestroyClippingRegion()
+{
+ m_graphicContext->ResetClip();
+ m_graphicContext->SetPen( m_pen );
+ m_graphicContext->SetBrush( m_brush );
+
+ m_clipping = false;
+}
+
+void wxGCDC::DoGetSizeMM( int* width, int* height ) const
+{
+ int w = 0, h = 0;
+
+ GetSize( &w, &h );
+ if (width)
+ *width = long( double(w) / (m_scaleX * m_mm_to_pix_x) );
+ if (height)
+ *height = long( double(h) / (m_scaleY * m_mm_to_pix_y) );
+}
+
+void wxGCDC::SetTextForeground( const wxColour &col )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::SetTextForeground - invalid DC") );
+
+ if ( col != m_textForegroundColour )
+ {
+ m_textForegroundColour = col;
+ m_graphicContext->SetFont( m_font, m_textForegroundColour );
+ }
+}
+
+void wxGCDC::SetTextBackground( const wxColour &col )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::SetTextBackground - invalid DC") );
+
+ m_textBackgroundColour = col;
+}
+
+void wxGCDC::SetMapMode( int mode )
+{
+ switch (mode)
+ {
+ case wxMM_TWIPS:
+ SetLogicalScale( twips2mm * m_mm_to_pix_x, twips2mm * m_mm_to_pix_y );
+ break;
+
+ case wxMM_POINTS:
+ SetLogicalScale( pt2mm * m_mm_to_pix_x, pt2mm * m_mm_to_pix_y );
+ break;
+
+ case wxMM_METRIC:
+ SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
+ break;
+
+ case wxMM_LOMETRIC:
+ SetLogicalScale( m_mm_to_pix_x / 10.0, m_mm_to_pix_y / 10.0 );
+ break;
+
+ case wxMM_TEXT:
+ default:
+ SetLogicalScale( 1.0, 1.0 );
+ break;
+ }
+
+ ComputeScaleAndOrigin();
+}
+
+void wxGCDC::SetUserScale( double x, double y )
+{
+ // allow negative ? -> no
+
+ m_userScaleX = x;
+ m_userScaleY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxGCDC::SetLogicalScale( double x, double y )
+{
+ // allow negative ?
+ m_logicalScaleX = x;
+ m_logicalScaleY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxGCDC::SetLogicalOrigin( wxCoord x, wxCoord y )
+{
+ m_logicalOriginX = x * m_signX; // is this still correct ?
+ m_logicalOriginY = y * m_signY;
+ ComputeScaleAndOrigin();
+}
+
+void wxGCDC::SetDeviceOrigin( wxCoord x, wxCoord y )
+{
+ m_deviceOriginX = x;
+ m_deviceOriginY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxGCDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
+{
+ m_signX = (xLeftRight ? 1 : -1);
+ m_signY = (yBottomUp ? -1 : 1);
+ ComputeScaleAndOrigin();
+}
+
+wxSize wxGCDC::GetPPI() const
+{
+ return wxSize(72, 72);
+}
+
+int wxGCDC::GetDepth() const
+{
+ return 32;
+}
+
+void wxGCDC::ComputeScaleAndOrigin()
+{
+ // CMB: copy scale to see if it changes
+ double origScaleX = m_scaleX;
+ double origScaleY = m_scaleY;
+ m_scaleX = m_logicalScaleX * m_userScaleX;
+ m_scaleY = m_logicalScaleY * m_userScaleY;
+ m_deviceOriginX = m_deviceOriginX + m_logicalOriginX;
+ m_deviceOriginY = m_deviceOriginY + m_logicalOriginY;
+
+ // CMB: if scale has changed call SetPen to recalulate the line width
+ if (m_scaleX != origScaleX || m_scaleY != origScaleY)
+ {
+ // this is a bit artificial, but we need to force wxDC to think
+ // the pen has changed
+ wxPen pen(GetPen());
+ m_pen = wxNullPen;
+ SetPen(pen);
+ SetFont(m_font);
+ }
+}
+
+void wxGCDC::SetPalette( const wxPalette& WXUNUSED(palette) )
+{
+
+}
+
+void wxGCDC::SetBackgroundMode( int mode )
+{
+ m_backgroundMode = mode;
+}
+
+void wxGCDC::SetFont( const wxFont &font )
+{
+ m_font = font;
+ if ( m_graphicContext )
+ {
+ wxFont f = font;
+ if ( f.Ok() )
+ f.SetPointSize( LogicalToDeviceYRel(font.GetPointSize()));
+ m_graphicContext->SetFont( f, m_textForegroundColour );
+ }
+}
+
+void wxGCDC::SetPen( const wxPen &pen )
+{
+ if ( m_pen == pen )
+ return;
+
+ m_pen = pen;
+ if ( m_graphicContext )
+ {
+ if ( m_pen.GetStyle() == wxSOLID || m_pen.GetStyle() == wxTRANSPARENT )
+ {
+ m_graphicContext->SetPen( m_pen );
+ }
+ else
+ {
+ // we have to compensate for moved device origins etc. otherwise patterned pens are standing still
+ // eg when using a wxScrollWindow and scrolling around
+ int origX = LogicalToDeviceX( 0 );
+ int origY = LogicalToDeviceY( 0 );
+ m_graphicContext->Translate( origX , origY );
+ m_graphicContext->SetPen( m_pen );
+ m_graphicContext->Translate( -origX , -origY );
+ }
+ }
+}
+
+void wxGCDC::SetBrush( const wxBrush &brush )
+{
+ if (m_brush == brush)
+ return;
+
+ m_brush = brush;
+ if ( m_graphicContext )
+ {
+ if ( brush.GetStyle() == wxSOLID || brush.GetStyle() == wxTRANSPARENT )
+ {
+ m_graphicContext->SetBrush( m_brush );
+ }
+ else
+ {
+ // we have to compensate for moved device origins etc. otherwise patterned brushes are standing still
+ // eg when using a wxScrollWindow and scrolling around
+ // TODO on MSW / GDIPlus this still occurs with hatched brushes
+ int origX = LogicalToDeviceX(0);
+ int origY = LogicalToDeviceY(0);
+ m_graphicContext->Translate( origX , origY );
+ m_graphicContext->SetBrush( m_brush );
+ m_graphicContext->Translate( -origX , -origY );
+ }
+ }
+}
+
+void wxGCDC::SetBackground( const wxBrush &brush )
+{
+ if (m_backgroundBrush == brush)
+ return;
+
+ m_backgroundBrush = brush;
+ if (!m_backgroundBrush.Ok())
+ return;
+}
+
+void wxGCDC::SetLogicalFunction( int function )
+{
+ if (m_logicalFunction == function)
+ return;
+
+ m_logicalFunction = function;
+#if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
+
+ CGContextRef cgContext = ((wxCairoContext*)(m_graphicContext))->GetNativeContext();
+ if ( m_logicalFunction == wxCOPY )
+ CGContextSetBlendMode( cgContext, kCGBlendModeNormal );
+ else if ( m_logicalFunction == wxINVERT )
+ CGContextSetBlendMode( cgContext, kCGBlendModeExclusion );
+ else
+ CGContextSetBlendMode( cgContext, kCGBlendModeNormal );
+#endif
+
+}
+
+bool wxGCDC::DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
+ const wxColour& WXUNUSED(col), int WXUNUSED(style))
+{
+ return false;
+}
+
+bool wxGCDC::DoGetPixel( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), wxColour *WXUNUSED(col) ) const
+{
+ // wxCHECK_MSG( 0 , false, wxT("wxGCDC(cg)::DoGetPixel - not implemented") );
+ return false;
+}
+
+void wxGCDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLine - invalid DC") );
+
+#if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
+
+ if ( m_logicalFunction != wxCOPY )
+ return;
+#endif
+
+ wxCoord xx1 = LogicalToDeviceX(x1);
+ wxCoord yy1 = LogicalToDeviceY(y1);
+ wxCoord xx2 = LogicalToDeviceX(x2);
+ wxCoord yy2 = LogicalToDeviceY(y2);
+
+ m_graphicContext->StrokeLine(xx1,yy1,xx2,yy2);
+
+ CalcBoundingBox(x1, y1);
+ CalcBoundingBox(x2, y2);
+}
+
+void wxGCDC::DoCrossHair( wxCoord x, wxCoord y )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoCrossHair - invalid DC") );
+
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ int w = 0, h = 0;
+
+ GetSize( &w, &h );
+
+ wxCoord xx = LogicalToDeviceX(x);
+ wxCoord yy = LogicalToDeviceY(y);
+ wxCoord xw = LogicalToDeviceX(w);
+ wxCoord x0 = LogicalToDeviceX(0);
+ wxCoord y0 = LogicalToDeviceY(0);
+ wxCoord yh = LogicalToDeviceY(h);
+
+ m_graphicContext->StrokeLine(x0,yy,xw,yy);
+ m_graphicContext->StrokeLine(xx,y0,xx,yh);
+
+ CalcBoundingBox(x0, y0);
+ CalcBoundingBox(x0+xw, y0+yh);
+}
+
+void wxGCDC::DoDrawArc( wxCoord x1, wxCoord y1,
+ wxCoord x2, wxCoord y2,
+ wxCoord xc, wxCoord yc )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawArc - invalid DC") );
+
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ wxCoord xx1 = LogicalToDeviceX(x1);
+ wxCoord yy1 = LogicalToDeviceY(y1);
+ wxCoord xx2 = LogicalToDeviceX(x2);
+ wxCoord yy2 = LogicalToDeviceY(y2);
+ wxCoord xxc = LogicalToDeviceX(xc);
+ wxCoord yyc = LogicalToDeviceY(yc);
+
+ double dx = xx1 - xxc;
+ double dy = yy1 - yyc;
+ double radius = sqrt((double)(dx * dx + dy * dy));
+ wxCoord rad = (wxCoord)radius;
+ double sa, ea;
+ if (xx1 == xx2 && yy1 == yy2)
+ {
+ sa = 0.0;
+ ea = 360.0;
+ }
+ else if (radius == 0.0)
+ {
+ sa = ea = 0.0;
+ }
+ else
+ {
+ sa = (xx1 - xxc == 0) ?
+ (yy1 - yyc < 0) ? 90.0 : -90.0 :
+ -atan2(double(yy1 - yyc), double(xx1 - xxc)) * RAD2DEG;
+ ea = (xx2 - xxc == 0) ?
+ (yy2 - yyc < 0) ? 90.0 : -90.0 :
+ -atan2(double(yy2 - yyc), double(xx2 - xxc)) * RAD2DEG;
+ }
+
+ bool fill = m_brush.GetStyle() != wxTRANSPARENT;
+
+ wxGraphicsPath* path = m_graphicContext->CreatePath();
+ if ( fill && ((x1!=x2)||(y1!=y2)) )
+ path->MoveToPoint( xxc, yyc );
+ path->AddArc( xxc, yyc , rad , DegToRad(sa) , DegToRad(ea), false );
+ if ( fill && ((x1!=x2)||(y1!=y2)) )
+ path->AddLineToPoint( xxc, yyc );
+ m_graphicContext->DrawPath(path);
+ delete path;
+}
+
+void wxGCDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord w, wxCoord h,
+ double sa, double ea )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipticArc - invalid DC") );
+
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ wxCoord xx = LogicalToDeviceX(x);
+ wxCoord yy = LogicalToDeviceY(y);
+ wxCoord ww = m_signX * LogicalToDeviceXRel(w);
+ wxCoord hh = m_signY * LogicalToDeviceYRel(h);
+
+ // handle -ve width and/or height
+ if (ww < 0)
+ {
+ ww = -ww;
+ xx = xx - ww;
+ }
+ if (hh < 0)
+ {
+ hh = -hh;
+ yy = yy - hh;
+ }
+
+ bool fill = m_brush.GetStyle() != wxTRANSPARENT;
+
+ wxGraphicsPath* path = m_graphicContext->CreatePath();
+ m_graphicContext->PushState();
+ m_graphicContext->Translate(xx+ww/2,yy+hh/2);
+ wxDouble factor = ((wxDouble) ww) / hh;
+ m_graphicContext->Scale( factor , 1.0);
+ if ( fill && (sa!=ea) )
+ path->MoveToPoint(0,0);
+ // since these angles (ea,sa) are measured counter-clockwise, we invert them to
+ // get clockwise angles
+ path->AddArc( 0, 0, hh/2 , DegToRad(-sa) , DegToRad(-ea), sa > ea );
+ if ( fill && (sa!=ea) )
+ path->AddLineToPoint(0,0);
+ m_graphicContext->DrawPath( path );
+ m_graphicContext->PopState();
+ delete path;
+}
+
+void wxGCDC::DoDrawPoint( wxCoord x, wxCoord y )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawPoint - invalid DC") );
+
+ DoDrawLine( x , y , x + 1 , y + 1 );
+}
+
+void wxGCDC::DoDrawLines(int n, wxPoint points[],
+ wxCoord xoffset, wxCoord yoffset)
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLines - invalid DC") );
+
+#if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
+
+ if ( m_logicalFunction != wxCOPY )
+ return;
+#endif
+
+ wxPoint2DDouble* pointsD = new wxPoint2DDouble[n];
+ for( int i = 0; i < n; ++i)
+ {
+ pointsD[i].m_x = LogicalToDeviceX(points[i].x + xoffset);
+ pointsD[i].m_y = LogicalToDeviceY(points[i].y + yoffset);
+ }
+
+ m_graphicContext->StrokeLines( n , pointsD);
+ delete[] pointsD;
+}
+
+#if wxUSE_SPLINES
+void wxGCDC::DoDrawSpline(wxList *points)
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawSpline - invalid DC") );
+
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ wxGraphicsPath* path = m_graphicContext->CreatePath();
+
+ wxList::compatibility_iterator node = points->GetFirst();
+ if (node == wxList::compatibility_iterator())
+ // empty list
+ return;
+
+ wxPoint *p = (wxPoint *)node->GetData();
+
+ wxCoord x1 = p->x;
+ wxCoord y1 = p->y;
+
+ node = node->GetNext();
+ p = (wxPoint *)node->GetData();
+
+ wxCoord x2 = p->x;
+ wxCoord y2 = p->y;
+ wxCoord cx1 = ( x1 + x2 ) / 2;
+ wxCoord cy1 = ( y1 + y2 ) / 2;
+
+ path->MoveToPoint( LogicalToDeviceX( x1 ) , LogicalToDeviceY( y1 ) );
+ path->AddLineToPoint( LogicalToDeviceX( cx1 ) , LogicalToDeviceY( cy1 ) );
+#if !wxUSE_STL
+
+ while ((node = node->GetNext()) != NULL)
+#else
+
+ while ((node = node->GetNext()))
+#endif // !wxUSE_STL
+
+ {
+ p = (wxPoint *)node->GetData();
+ x1 = x2;
+ y1 = y2;
+ x2 = p->x;
+ y2 = p->y;
+ wxCoord cx4 = (x1 + x2) / 2;
+ wxCoord cy4 = (y1 + y2) / 2;
+
+ path->AddQuadCurveToPoint(
+ LogicalToDeviceX( x1 ) , LogicalToDeviceY( y1 ) ,
+ LogicalToDeviceX( cx4 ) , LogicalToDeviceY( cy4 ) );
+
+ cx1 = cx4;
+ cy1 = cy4;
+ }
+
+ path->AddLineToPoint( LogicalToDeviceX( x2 ) , LogicalToDeviceY( y2 ) );
+
+ m_graphicContext->StrokePath( path );
+ delete path;
+}
+#endif // wxUSE_SPLINES
+
+void wxGCDC::DoDrawPolygon( int n, wxPoint points[],
+ wxCoord xoffset, wxCoord yoffset,
+ int fillStyle )
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawPolygon - invalid DC") );
+
+ if ( n <= 0 || (m_brush.GetStyle() == wxTRANSPARENT && m_pen.GetStyle() == wxTRANSPARENT ) )
+ return;
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ bool closeIt = false;
+ if (points[n-1] != points[0])
+ closeIt = true;
+
+ wxPoint2DDouble* pointsD = new wxPoint2DDouble[n+(closeIt?1:0)];
+ for( int i = 0; i < n; ++i)
+ {
+ pointsD[i].m_x = LogicalToDeviceX(points[i].x + xoffset);
+ pointsD[i].m_y = LogicalToDeviceY(points[i].y + yoffset);
+ }
+ if ( closeIt )
+ pointsD[n] = pointsD[0];
+
+ m_graphicContext->DrawLines( n+(closeIt?1:0) , pointsD, fillStyle);
+ delete[] pointsD;
+}
+
+void wxGCDC::DoDrawPolyPolygon(int n,
+ int count[],
+ wxPoint points[],
+ wxCoord xoffset,
+ wxCoord yoffset,
+ int fillStyle)
+{
+ wxASSERT(n > 1);
+ wxGraphicsPath* path = m_graphicContext->CreatePath();
+
+ int i = 0;
+ for ( int j = 0; j < n; ++j)
+ {
+ wxPoint start = points[i];
+ path->MoveToPoint(LogicalToDeviceX(start.x+ xoffset), LogicalToDeviceY(start.y+ yoffset));
+ ++i;
+ int l = count[j];
+ for ( int k = 1; k < l; ++k)
+ {
+ path->AddLineToPoint( LogicalToDeviceX(points[i].x+ xoffset), LogicalToDeviceY(points[i].y+ yoffset));
+ ++i;
+ }
+ // close the polygon
+ if ( start != points[i-1])
+ path->AddLineToPoint( LogicalToDeviceX(start.x+ xoffset), LogicalToDeviceY(start.y+ yoffset));
+ }
+ m_graphicContext->DrawPath( path , fillStyle);
+ delete path;
+}
+
+void wxGCDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRectangle - invalid DC") );
+
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ wxCoord xx = LogicalToDeviceX(x);
+ wxCoord yy = LogicalToDeviceY(y);
+ wxCoord ww = m_signX * LogicalToDeviceXRel(width);
+ wxCoord hh = m_signY * LogicalToDeviceYRel(height);
+
+ // CMB: draw nothing if transformed w or h is 0
+ if (ww == 0 || hh == 0)
+ return;
+
+ // CMB: handle -ve width and/or height
+ if (ww < 0)
+ {
+ ww = -ww;
+ xx = xx - ww;
+ }
+ if (hh < 0)
+ {
+ hh = -hh;
+ yy = yy - hh;
+ }
+ m_graphicContext->DrawRectangle( xx,yy,ww,hh);
+}
+
+void wxGCDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y,
+ wxCoord width, wxCoord height,
+ double radius)
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRoundedRectangle - invalid DC") );
+
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ if (radius < 0.0)
+ radius = - radius * ((width < height) ? width : height);
+ wxCoord xx = LogicalToDeviceX(x);
+ wxCoord yy = LogicalToDeviceY(y);
+ wxCoord ww = m_signX * LogicalToDeviceXRel(width);
+ wxCoord hh = m_signY * LogicalToDeviceYRel(height);
+
+ // CMB: draw nothing if transformed w or h is 0
+ if (ww == 0 || hh == 0)
+ return;
+
+ // CMB: handle -ve width and/or height
+ if (ww < 0)
+ {
+ ww = -ww;
+ xx = xx - ww;
+ }
+ if (hh < 0)
+ {
+ hh = -hh;
+ yy = yy - hh;
+ }
+
+ m_graphicContext->DrawRoundedRectangle( xx,yy,ww,hh,radius);
+}
+
+void wxGCDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipse - invalid DC") );
+
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ wxDouble xx = LogicalToDeviceX(x);
+ wxDouble yy = LogicalToDeviceY(y);
+ wxDouble ww = m_signX * LogicalToDeviceXRel(width);
+ wxDouble hh = m_signY * LogicalToDeviceYRel(height);
+
+ // CMB: draw nothing if transformed w or h is 0
+ if (ww == 0 || hh == 0)
+ return;
+
+ // CMB: handle -ve width and/or height
+ if (ww < 0)
+ {
+ ww = -ww;
+ xx = xx - ww;
+ }
+ if (hh < 0)
+ {
+ hh = -hh;
+ yy = yy - hh;
+ }
+
+ m_graphicContext->DrawEllipse(xx,yy,ww,hh);
+}
+
+bool wxGCDC::CanDrawBitmap() const
+{
+ return true;
+}
+
+bool wxGCDC::DoBlit(
+ wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
+ wxDC *source, wxCoord xsrc, wxCoord ysrc, int logical_func , bool WXUNUSED(useMask),
+ wxCoord xsrcMask, wxCoord ysrcMask )
+{
+ wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::DoBlit - invalid DC") );
+ wxCHECK_MSG( source->Ok(), false, wxT("wxGCDC(cg)::DoBlit - invalid source DC") );
+
+ if ( logical_func == wxNO_OP )
+ return true;
+
+ if (xsrcMask == -1 && ysrcMask == -1)
+ {
+ xsrcMask = xsrc;
+ ysrcMask = ysrc;
+ }
+
+ wxCoord yysrc = source-> LogicalToDeviceY(ysrc);
+ wxCoord xxsrc = source-> LogicalToDeviceX(xsrc);
+ wxCoord wwsrc = source-> LogicalToDeviceXRel(width);
+ wxCoord hhsrc = source-> LogicalToDeviceYRel(height);
+
+ wxCoord yydest = LogicalToDeviceY(ydest);
+ wxCoord xxdest = LogicalToDeviceX(xdest);
+ wxCoord wwdest = LogicalToDeviceXRel(width);
+ wxCoord hhdest = LogicalToDeviceYRel(height);
+
+ wxMemoryDC* memdc = wxDynamicCast(source,wxMemoryDC);
+ if ( memdc && logical_func == wxCOPY )
+ {
+ wxBitmap blit = memdc->GetSelectedBitmap();
+
+ wxASSERT_MSG( blit.Ok() , wxT("Invalid bitmap for blitting") );
+
+ wxCoord bmpwidth = blit.GetWidth();
+ wxCoord bmpheight = blit.GetHeight();
+
+ if ( xxsrc != 0 || yysrc != 0 || bmpwidth != wwsrc || bmpheight != hhsrc )
+ {
+ wwsrc = wxMin( wwsrc , bmpwidth - xxsrc );
+ hhsrc = wxMin( hhsrc , bmpheight - yysrc );
+ if ( wwsrc > 0 && hhsrc > 0 )
+ {
+ if ( xxsrc >= 0 && yysrc >= 0 )
+ {
+ wxRect subrect( xxsrc, yysrc, wwsrc , hhsrc );
+ // TODO we perhaps could add a DrawSubBitmap call to dc for performance reasons
+ blit = blit.GetSubBitmap( subrect );
+ }
+ else
+ {
+ // in this case we'd probably have to adjust the different coordinates, but
+ // we have to find out proper contract first
+ blit = wxNullBitmap;
+ }
+ }
+ else
+ {
+ blit = wxNullBitmap;
+ }
+ }
+
+ if ( blit.Ok() )
+ {
+ m_graphicContext->DrawBitmap( blit, xxdest , yydest , wwdest , hhdest );
+ }
+ }
+ else
+ {
+ wxFAIL_MSG( wxT("Blitting is only supported from bitmap contexts, and only with wxCOPY logical operation.") );
+ return false;
+ }
+
+ return true;
+}
+
+void wxGCDC::DoDrawRotatedText(const wxString& str, wxCoord x, wxCoord y,
+ double angle)
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRotatedText - invalid DC") );
+
+ if ( str.length() == 0 )
+ return;
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ int drawX = LogicalToDeviceX(x);
+ int drawY = LogicalToDeviceY(y);
+
+ m_graphicContext->DrawText( str, drawX ,drawY , DegToRad(angle ));
+}
+
+void wxGCDC::DoDrawText(const wxString& str, wxCoord x, wxCoord y)
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRotatedText - invalid DC") );
+
+ if ( str.length() == 0 )
+ return;
+ if ( m_logicalFunction != wxCOPY )
+ return;
+
+ int drawX = LogicalToDeviceX(x);
+ int drawY = LogicalToDeviceY(y);
+
+ m_graphicContext->DrawText( str, drawX ,drawY);
+}
+
+bool wxGCDC::CanGetTextExtent() const
+{
+ wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::CanGetTextExtent - invalid DC") );
+
+ return true;
+}
+
+void wxGCDC::DoGetTextExtent( const wxString &str, wxCoord *width, wxCoord *height,
+ wxCoord *descent, wxCoord *externalLeading ,
+ wxFont *theFont ) const
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoGetTextExtent - invalid DC") );
+
+ if ( theFont )
+ {
+ m_graphicContext->SetFont( *theFont, m_textForegroundColour );
+ }
+
+ wxDouble h , d , e , w;
+
+ m_graphicContext->GetTextExtent( str, &w, &h, &d, &e );
+
+ if ( height )
+ *height = DeviceToLogicalYRel((wxCoord)h);
+ if ( descent )
+ *descent = DeviceToLogicalYRel((wxCoord)d);
+ if ( externalLeading )
+ *externalLeading = DeviceToLogicalYRel((wxCoord)e);
+ if ( width )
+ *width = DeviceToLogicalXRel((wxCoord)w);
+
+ if ( theFont )
+ {
+ m_graphicContext->SetFont( m_font, m_textForegroundColour );
+ }
+}
+
+bool wxGCDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
+{
+ wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::DoGetPartialTextExtents - invalid DC") );
+ widths.Clear();
+ widths.Add(0,text.Length());
+ if ( text.IsEmpty() )
+ return true;
+
+ wxArrayDouble widthsD;
+
+ m_graphicContext->GetPartialTextExtents( text, widthsD );
+ for ( size_t i = 0; i < widths.GetCount(); ++i )
+ widths[i] = DeviceToLogicalXRel((wxCoord)(widthsD[i] + 0.5));
+
+ return true;
+}
+
+wxCoord wxGCDC::GetCharWidth(void) const
+{
+ wxCoord width;
+ DoGetTextExtent( wxT("g") , &width , NULL , NULL , NULL , NULL );
+
+ return width;
+}
+
+wxCoord wxGCDC::GetCharHeight(void) const
+{
+ wxCoord height;
+ DoGetTextExtent( wxT("g") , NULL , &height , NULL , NULL , NULL );
+
+ return height;
+}
+
+void wxGCDC::Clear(void)
+{
+ wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::Clear - invalid DC") );
+ // TODO better implementation / incorporate size info into wxGCDC or context
+ m_graphicContext->SetBrush( m_backgroundBrush );
+ wxPen p = *wxTRANSPARENT_PEN;
+ m_graphicContext->SetPen( p );
+ DoDrawRectangle( 0, 0, 32000 , 32000 );
+ m_graphicContext->SetPen( m_pen );
+ m_graphicContext->SetBrush( m_brush );
+}
+
+void wxGCDC::DoGetSize(int *width, int *height) const
+{
+ *width = 1000;
+ *height = 1000;
+}
+
+void wxGCDC::DoGradientFillLinear(const wxRect& rect,
+ const wxColour& initialColour,
+ const wxColour& destColour,
+ wxDirection nDirection )
+{
+ wxPoint start;
+ wxPoint end;
+ switch( nDirection)
+ {
+ case wxWEST :
+ start = rect.GetRightBottom();
+ start.x++;
+ end = rect.GetLeftBottom();
+ break;
+ case wxEAST :
+ start = rect.GetLeftBottom();
+ end = rect.GetRightBottom();
+ end.x++;
+ break;
+ case wxNORTH :
+ start = rect.GetLeftBottom();
+ start.y++;
+ end = rect.GetLeftTop();
+ break;
+ case wxSOUTH :
+ start = rect.GetLeftTop();
+ end = rect.GetLeftBottom();
+ end.y++;
+ break;
+ default :
+ break;
+ }
+
+ m_graphicContext->SetBrush( m_graphicContext->CreateLinearGradientBrush(
+ LogicalToDeviceX(start.x),LogicalToDeviceY(start.y),
+ LogicalToDeviceX(end.x),LogicalToDeviceY(end.y), initialColour, destColour));
+
+ wxDouble xx = LogicalToDeviceX(rect.x);
+ wxDouble yy = LogicalToDeviceY(rect.y);
+ wxDouble ww = m_signX * LogicalToDeviceXRel(rect.width);
+ wxDouble hh = m_signY * LogicalToDeviceYRel(rect.height);
+
+ if (ww == 0 || hh == 0)
+ return;
+
+ if (ww < 0)
+ {
+ ww = -ww;
+ xx = xx - ww;
+ }
+ if (hh < 0)
+ {
+ hh = -hh;
+ yy = yy - hh;
+ }
+
+ m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
+ m_graphicContext->DrawRectangle(xx,yy,ww,hh);
+ m_graphicContext->SetPen(m_pen);
+}
+
+void wxGCDC::DoGradientFillConcentric(const wxRect& rect,
+ const wxColour& initialColour,
+ const wxColour& destColour,
+ const wxPoint& circleCenter)
+{
+ //Radius
+ wxInt32 cx = rect.GetWidth() / 2;
+ wxInt32 cy = rect.GetHeight() / 2;
+ wxInt32 nRadius;
+ if (cx < cy)
+ nRadius = cx;
+ else
+ nRadius = cy;
+
+ wxDouble xx = LogicalToDeviceX(rect.x);
+ wxDouble yy = LogicalToDeviceY(rect.y);
+ wxDouble ww = m_signX * LogicalToDeviceXRel(rect.width);
+ wxDouble hh = m_signY * LogicalToDeviceYRel(rect.height);
+
+ if (ww == 0 || hh == 0)
+ return;
+
+ if (ww < 0)
+ {
+ ww = -ww;
+ xx = xx - ww;
+ }
+ if (hh < 0)
+ {
+ hh = -hh;
+ yy = yy - hh;
+ }
+
+ m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
+ m_graphicContext->SetBrush( wxBrush( destColour) );
+ m_graphicContext->DrawRectangle( xx,yy,ww,hh);
+
+ m_graphicContext->SetBrush( m_graphicContext->CreateRadialGradientBrush(
+ xx+LogicalToDeviceX(circleCenter.x),yy+LogicalToDeviceY(circleCenter.y),
+ xx+LogicalToDeviceX(circleCenter.x),yy+LogicalToDeviceY(circleCenter.y),
+ LogicalToDeviceXRel(nRadius),
+ initialColour,destColour));
+
+ m_graphicContext->DrawRectangle( xx,yy,ww,hh);
+ m_graphicContext->SetPen(m_pen);
+}
+
+void wxGCDC::DoDrawCheckMark(wxCoord x, wxCoord y,
+ wxCoord width, wxCoord height)
+{
+ wxDCBase::DoDrawCheckMark(x,y,width,height);
+}
+
+#endif // wxUSE_GRAPHICS_CONTEXT
projects / wxWidgets.git / commitdiff
