X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ddb0ed69a947fdc330d5d8b5a1e7baee8b1b89ae..8cbc59fe84f046685b873cf58f6c56debe59de1c:/src/common/graphcmn.cpp diff --git a/src/common/graphcmn.cpp b/src/common/graphcmn.cpp index b66531f910..9cdfdbac0c 100644 --- a/src/common/graphcmn.cpp +++ b/src/common/graphcmn.cpp @@ -3,7 +3,7 @@ // Purpose: graphics context methods common to all platforms // Author: Stefan Csomor // Modified by: -// Created: +// Created: // RCS-ID: $Id$ // Copyright: (c) Stefan Csomor // Licence: wxWindows licence @@ -18,17 +18,14 @@ #if wxUSE_GRAPHICS_CONTEXT -#include "wx/graphics.h" +#include "wx/private/graphics.h" #ifndef WX_PRECOMP #include "wx/icon.h" #include "wx/bitmap.h" #include "wx/dcmemory.h" #include "wx/region.h" -#endif - -#if !defined(wxMAC_USE_CORE_GRAPHICS_BLEND_MODES) -#define wxMAC_USE_CORE_GRAPHICS_BLEND_MODES 0 + #include "wx/log.h" #endif //----------------------------------------------------------------------------- @@ -48,1327 +45,799 @@ static inline double DegToRad(double deg) //----------------------------------------------------------------------------- -wxPoint2DDouble wxGraphicsPath::GetCurrentPoint() +//----------------------------------------------------------------------------- +// wxGraphicsObject +//----------------------------------------------------------------------------- + +IMPLEMENT_DYNAMIC_CLASS(wxGraphicsObject, wxObject) + +wxGraphicsObjectRefData::wxGraphicsObjectRefData( wxGraphicsRenderer* renderer ) { - wxDouble x,y; - GetCurrentPoint(x,y); - return wxPoint2DDouble(x,y); + m_renderer = renderer; } - -void wxGraphicsPath::MoveToPoint( const wxPoint2DDouble& p) +wxGraphicsObjectRefData::wxGraphicsObjectRefData( const wxGraphicsObjectRefData* data ) { - MoveToPoint( p.m_x , p.m_y); + m_renderer = data->m_renderer; } - -void wxGraphicsPath::AddLineToPoint( const wxPoint2DDouble& p) +wxGraphicsRenderer* wxGraphicsObjectRefData::GetRenderer() const { - AddLineToPoint( p.m_x , p.m_y); + return m_renderer ; } -void wxGraphicsPath::AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e) +wxGraphicsObjectRefData* wxGraphicsObjectRefData::Clone() const { - AddCurveToPoint(c1.m_x, c1.m_y, c2.m_x, c2.m_y, e.m_x, e.m_y); + return new wxGraphicsObjectRefData(this); } -void wxGraphicsPath::AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise) +wxGraphicsObject::wxGraphicsObject() { - AddArc(c.m_x, c.m_y, r, startAngle, endAngle, clockwise); } -// -// Emulations -// - -void wxGraphicsPath::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) +wxGraphicsObject::wxGraphicsObject( wxGraphicsRenderer* renderer ) { - // calculate using degree elevation to a cubic bezier - wxPoint2DDouble c1; - wxPoint2DDouble c2; - - wxPoint2DDouble start = GetCurrentPoint(); - wxPoint2DDouble end(x,y); - wxPoint2DDouble c(cx,cy); - c1 = wxDouble(1/3.0) * start + wxDouble(2/3.0) * c; - c2 = wxDouble(2/3.0) * c + wxDouble(1/3.0) * end; - AddCurveToPoint(c1.m_x,c1.m_y,c2.m_x,c2.m_y,x,y); + SetRefData( new wxGraphicsObjectRefData(renderer)); } -void wxGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) +wxGraphicsObject::~wxGraphicsObject() { - MoveToPoint(x,y); - AddLineToPoint(x,y+h); - AddLineToPoint(x+w,y+h); - AddLineToPoint(x+w,y); - CloseSubpath(); } -void wxGraphicsPath::AddCircle( wxDouble x, wxDouble y, wxDouble r ) +bool wxGraphicsObject::IsNull() const { - MoveToPoint(x+r,y); - AddArc( x,y,r,0,2*M_PI,false); - CloseSubpath(); + return m_refData == NULL; } -// draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1) -void wxGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) -{ - wxPoint2DDouble current = GetCurrentPoint(); - wxPoint2DDouble p1(x1,y1); - wxPoint2DDouble p2(x2,y2); - - wxPoint2DDouble v1 = current - p1; - v1.Normalize(); - wxPoint2DDouble v2 = p2 - p1; - v2.Normalize(); - - wxDouble alpha = v1.GetVectorAngle() - v2.GetVectorAngle(); +wxGraphicsRenderer* wxGraphicsObject::GetRenderer() const +{ + return ( IsNull() ? NULL : GetGraphicsData()->GetRenderer() ); +} - if ( alpha < 0 ) - alpha = 360 + alpha; - // TODO obtuse angles +wxGraphicsObjectRefData* wxGraphicsObject::GetGraphicsData() const +{ + return (wxGraphicsObjectRefData*) m_refData; +} - alpha = DegToRad(alpha); +wxObjectRefData* wxGraphicsObject::CreateRefData() const +{ + wxLogDebug(wxT("A Null Object cannot be changed")); + return NULL; +} - wxDouble dist = r / sin(alpha/2) * cos(alpha/2); - // calculate tangential points - wxPoint2DDouble t1 = dist*v1 + p1; - wxPoint2DDouble t2 = dist*v2 + p1; +wxObjectRefData* wxGraphicsObject::CloneRefData(const wxObjectRefData* data) const +{ + const wxGraphicsObjectRefData* ptr = (const wxGraphicsObjectRefData*) data; + return ptr->Clone(); +} - wxPoint2DDouble nv1 = v1; - nv1.SetVectorAngle(v1.GetVectorAngle()-90); - wxPoint2DDouble c = t1 + r*nv1; +//----------------------------------------------------------------------------- +// pens etc. +//----------------------------------------------------------------------------- - wxDouble a1 = v1.GetVectorAngle()+90; - wxDouble a2 = v2.GetVectorAngle()-90; +IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPen, wxGraphicsObject) +IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBrush, wxGraphicsObject) +IMPLEMENT_DYNAMIC_CLASS(wxGraphicsFont, wxGraphicsObject) +IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBitmap, wxGraphicsObject) - AddLineToPoint(t1); - AddArc(c.m_x,c.m_y,r,DegToRad(a1),DegToRad(a2),true); - AddLineToPoint(p2); -} +WXDLLIMPEXP_DATA_CORE(wxGraphicsPen) wxNullGraphicsPen; +WXDLLIMPEXP_DATA_CORE(wxGraphicsBrush) wxNullGraphicsBrush; +WXDLLIMPEXP_DATA_CORE(wxGraphicsFont) wxNullGraphicsFont; +WXDLLIMPEXP_DATA_CORE(wxGraphicsBitmap) wxNullGraphicsBitmap; //----------------------------------------------------------------------------- -// wxGraphicsContext Convenience Methods +// matrix //----------------------------------------------------------------------------- -void wxGraphicsContext::DrawPath( const wxGraphicsPath *path, int fillStyle ) +IMPLEMENT_DYNAMIC_CLASS(wxGraphicsMatrix, wxGraphicsObject) +WXDLLIMPEXP_DATA_CORE(wxGraphicsMatrix) wxNullGraphicsMatrix; + +// concatenates the matrix +void wxGraphicsMatrix::Concat( const wxGraphicsMatrix *t ) { - FillPath( path , fillStyle ); - StrokePath( path ); + AllocExclusive(); + GetMatrixData()->Concat(t->GetMatrixData()); } -void wxGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle ) +// sets the matrix to the respective values +void wxGraphicsMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d, + wxDouble tx, wxDouble ty) { - Translate(x,y); - Rotate( -angle ); - DrawText( str , 0, 0 ); - Rotate( angle ); - Translate(-x,-y); + AllocExclusive(); + GetMatrixData()->Set(a,b,c,d,tx,ty); } -void wxGraphicsContext::StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2) +// gets the component valuess of the matrix +void wxGraphicsMatrix::Get(wxDouble* a, wxDouble* b, wxDouble* c, + wxDouble* d, wxDouble* tx, wxDouble* ty) const { - wxGraphicsPath* path = CreatePath(); - path->MoveToPoint(x1, y1); - path->AddLineToPoint( x2, y2 ); - StrokePath( path ); - delete path; + GetMatrixData()->Get(a, b, c, d, tx, ty); } -void wxGraphicsContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h) +// makes this the inverse matrix +void wxGraphicsMatrix::Invert() { - wxGraphicsPath* path = CreatePath(); - path->AddRectangle( x , y , w , h ); - DrawPath( path ); - delete path; + AllocExclusive(); + GetMatrixData()->Invert(); } -void wxGraphicsContext::DrawEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) +// returns true if the elements of the transformation matrix are equal ? +bool wxGraphicsMatrix::IsEqual( const wxGraphicsMatrix* t) const { - wxGraphicsPath* path = CreatePath(); - if ( w == h ) - { - path->AddCircle( x+w/2,y+w/2,w/2); - DrawPath(path); - } - else - { - PushState(); - Translate(x+w/2,y+h/2); - wxDouble factor = ((wxDouble) w) / h; - Scale( factor , 1.0); - path->AddCircle(0,0,h/2); - DrawPath(path); - PopState(); - } - delete path; + return GetMatrixData()->IsEqual(t->GetMatrixData()); } -void wxGraphicsContext::DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) +// return true if this is the identity matrix +bool wxGraphicsMatrix::IsIdentity() const { - wxGraphicsPath* path = CreatePath(); - if ( radius == 0) - { - path->AddRectangle( x , y , w , h ); - DrawPath( path ); - } - else - { - PushState(); - Translate( x , y ); - - path->MoveToPoint(w, h / 2); - path->AddArcToPoint(w, h, w / 2, h, radius); - path->AddArcToPoint(0, h, 0, h / 2, radius); - path->AddArcToPoint(0, 0, w / 2, 0, radius); - path->AddArcToPoint(w, 0, w, h / 2, radius); - path->CloseSubpath(); - DrawPath( path ); - PopState(); - } - delete path; + return GetMatrixData()->IsIdentity(); } -void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *points) +// add the translation to this matrix +void wxGraphicsMatrix::Translate( wxDouble dx , wxDouble dy ) { - wxASSERT(n > 1); - wxGraphicsPath* path = CreatePath(); - path->MoveToPoint(points[0].m_x, points[0].m_y); - for ( size_t i = 1; i < n; ++i) - path->AddLineToPoint( points[i].m_x, points[i].m_y ); - StrokePath( path ); - delete path; + AllocExclusive(); + GetMatrixData()->Translate(dx,dy); } -void wxGraphicsContext::DrawLines( size_t n, const wxPoint2DDouble *points, int fillStyle) +// add the scale to this matrix +void wxGraphicsMatrix::Scale( wxDouble xScale , wxDouble yScale ) { - wxASSERT(n > 1); - wxGraphicsPath* path = CreatePath(); - path->MoveToPoint(points[0].m_x, points[0].m_y); - for ( size_t i = 1; i < n; ++i) - path->AddLineToPoint( points[i].m_x, points[i].m_y ); - DrawPath( path , fillStyle); - delete path; + AllocExclusive(); + GetMatrixData()->Scale(xScale,yScale); } -void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints) +// add the rotation to this matrix (radians) +void wxGraphicsMatrix::Rotate( wxDouble angle ) { - wxASSERT(n > 0); - wxGraphicsPath* path = CreatePath(); - for ( size_t i = 0; i < n; ++i) - { - path->MoveToPoint(beginPoints[i].m_x, beginPoints[i].m_y); - path->AddLineToPoint( endPoints[i].m_x, endPoints[i].m_y ); - } - StrokePath( path ); - delete path; + AllocExclusive(); + GetMatrixData()->Rotate(angle); } -IMPLEMENT_ABSTRACT_CLASS(wxGCDC, wxObject) - -//----------------------------------------------------------------------------- -// wxDC bridge class -//----------------------------------------------------------------------------- +// +// apply the transforms +// -wxGCDC::wxGCDC() +// applies that matrix to the point +void wxGraphicsMatrix::TransformPoint( wxDouble *x, wxDouble *y ) const { - Init(); + GetMatrixData()->TransformPoint(x,y); } -void wxGCDC::SetGraphicsContext( wxGraphicsContext* ctx ) -{ - delete m_graphicContext; - m_graphicContext = ctx; -} - -wxGCDC::wxGCDC(const wxWindowDC& dc) +// applies the matrix except for translations +void wxGraphicsMatrix::TransformDistance( wxDouble *dx, wxDouble *dy ) const { - Init(); - m_graphicContext = wxGraphicsContext::Create(dc); - m_ok = true; - if ( dc.GetFont().Ok()) - m_graphicContext->SetFont(dc.GetFont()); - if ( dc.GetPen().Ok()) - m_graphicContext->SetPen(dc.GetPen()); - if ( dc.GetBrush().Ok()) - m_graphicContext->SetBrush(dc.GetBrush()); - m_graphicContext->SetTextColor(dc.GetTextForeground()); + GetMatrixData()->TransformDistance(dx,dy); } -void wxGCDC::Init() +// returns the native representation +void * wxGraphicsMatrix::GetNativeMatrix() const { - m_ok = false; - m_colour = true; - m_mm_to_pix_x = mm2pt; - m_mm_to_pix_y = mm2pt; + return GetMatrixData()->GetNativeMatrix(); +} - m_pen = *wxBLACK_PEN; - m_font = *wxNORMAL_FONT; - m_brush = *wxWHITE_BRUSH; +//----------------------------------------------------------------------------- +// path +//----------------------------------------------------------------------------- - m_graphicContext = NULL; -} +IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPath, wxGraphicsObject) +WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath; +// convenience functions, for using wxPoint2DDouble etc -wxGCDC::~wxGCDC() +wxPoint2DDouble wxGraphicsPath::GetCurrentPoint() const { - delete m_graphicContext; + wxDouble x,y; + GetCurrentPoint(&x,&y); + return wxPoint2DDouble(x,y); } -void wxGCDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool WXUNUSED(useMask) ) +void wxGraphicsPath::MoveToPoint( const wxPoint2DDouble& p) { - 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 ); + MoveToPoint( p.m_x , p.m_y); } -void wxGCDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y ) +void wxGraphicsPath::AddLineToPoint( const wxPoint2DDouble& p) { - 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 ); + AddLineToPoint( p.m_x , p.m_y); } -void wxGCDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height ) +void wxGraphicsPath::AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e) { - 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; - } + AddCurveToPoint(c1.m_x, c1.m_y, c2.m_x, c2.m_y, e.m_x, e.m_y); } -void wxGCDC::DoSetClippingRegionAsRegion( const wxRegion ®ion ) +void wxGraphicsPath::AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise) { - 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; - } - } + AddArc(c.m_x, c.m_y, r, startAngle, endAngle, clockwise); } -void wxGCDC::DestroyClippingRegion() +wxRect2DDouble wxGraphicsPath::GetBox() const { - m_graphicContext->ResetClip(); - m_graphicContext->SetPen( m_pen ); - m_graphicContext->SetBrush( m_brush ); - - m_clipping = false; + wxDouble x,y,w,h; + GetBox(&x,&y,&w,&h); + return wxRect2DDouble( x,y,w,h ); } -void wxGCDC::DoGetSizeMM( int* width, int* height ) const +bool wxGraphicsPath::Contains( const wxPoint2DDouble& c, wxPolygonFillMode fillStyle ) 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) ); + return Contains( c.m_x, c.m_y, fillStyle); } -void wxGCDC::SetTextForeground( const wxColour &col ) -{ - wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::SetTextForeground - invalid DC") ); +// true redirections - if ( col != m_textForegroundColour ) - { - m_textForegroundColour = col; - m_graphicContext->SetTextColor( col ); - } +// begins a new subpath at (x,y) +void wxGraphicsPath::MoveToPoint( wxDouble x, wxDouble y ) +{ + AllocExclusive(); + GetPathData()->MoveToPoint(x,y); } -void wxGCDC::SetTextBackground( const wxColour &col ) +// adds a straight line from the current point to (x,y) +void wxGraphicsPath::AddLineToPoint( wxDouble x, wxDouble y ) { - wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::SetTextBackground - invalid DC") ); - - m_textBackgroundColour = col; + AllocExclusive(); + GetPathData()->AddLineToPoint(x,y); } -void wxGCDC::SetMapMode( int mode ) +// adds a cubic Bezier curve from the current point, using two control points and an end point +void wxGraphicsPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) { - 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(); + AllocExclusive(); + GetPathData()->AddCurveToPoint(cx1,cy1,cx2,cy2,x,y); } -void wxGCDC::SetUserScale( double x, double y ) +// adds another path +void wxGraphicsPath::AddPath( const wxGraphicsPath& path ) { - // allow negative ? -> no - - m_userScaleX = x; - m_userScaleY = y; - ComputeScaleAndOrigin(); + AllocExclusive(); + GetPathData()->AddPath(path.GetPathData()); } -void wxGCDC::SetLogicalScale( double x, double y ) +// closes the current sub-path +void wxGraphicsPath::CloseSubpath() { - // allow negative ? - m_logicalScaleX = x; - m_logicalScaleY = y; - ComputeScaleAndOrigin(); + AllocExclusive(); + GetPathData()->CloseSubpath(); } -void wxGCDC::SetLogicalOrigin( wxCoord x, wxCoord y ) +// gets the last point of the current path, (0,0) if not yet set +void wxGraphicsPath::GetCurrentPoint( wxDouble* x, wxDouble* y) const { - m_logicalOriginX = x * m_signX; // is this still correct ? - m_logicalOriginY = y * m_signY; - ComputeScaleAndOrigin(); + GetPathData()->GetCurrentPoint(x,y); } -void wxGCDC::SetDeviceOrigin( wxCoord x, wxCoord y ) +// adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle +void wxGraphicsPath::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) { - m_deviceOriginX = x; - m_deviceOriginY = y; - ComputeScaleAndOrigin(); + AllocExclusive(); + GetPathData()->AddArc(x,y,r,startAngle,endAngle,clockwise); } -void wxGCDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp ) +// +// These are convenience functions which - if not available natively will be assembled +// using the primitives from above +// + +// adds a quadratic Bezier curve from the current point, using a control point and an end point +void wxGraphicsPath::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) { - m_signX = (xLeftRight ? 1 : -1); - m_signY = (yBottomUp ? -1 : 1); - ComputeScaleAndOrigin(); + AllocExclusive(); + GetPathData()->AddQuadCurveToPoint(cx,cy,x,y); } -wxSize wxGCDC::GetPPI() const +// appends a rectangle as a new closed subpath +void wxGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) { - return wxSize(72, 72); + AllocExclusive(); + GetPathData()->AddRectangle(x,y,w,h); } -int wxGCDC::GetDepth() const +// appends an ellipsis as a new closed subpath fitting the passed rectangle +void wxGraphicsPath::AddCircle( wxDouble x, wxDouble y, wxDouble r ) { - return 32; + AllocExclusive(); + GetPathData()->AddCircle(x,y,r); } -void wxGCDC::ComputeScaleAndOrigin() +// appends a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1) +void wxGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) { - // 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); - } + GetPathData()->AddArcToPoint(x1,y1,x2,y2,r); } -void wxGCDC::SetPalette( const wxPalette& WXUNUSED(palette) ) +// appends an ellipse +void wxGraphicsPath::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) { - + AllocExclusive(); + GetPathData()->AddEllipse(x,y,w,h); } -void wxGCDC::SetBackgroundMode( int mode ) +// appends a rounded rectangle +void wxGraphicsPath::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) { - m_backgroundMode = mode; + AllocExclusive(); + GetPathData()->AddRoundedRectangle(x,y,w,h,radius); } -void wxGCDC::SetFont( const wxFont &font ) +// returns the native path +void * wxGraphicsPath::GetNativePath() const { - m_font = font; - if ( m_graphicContext ) - { - wxFont f = font; - if ( f.Ok() ) - f.SetPointSize( LogicalToDeviceYRel(font.GetPointSize())); - m_graphicContext->SetFont( f ); - } + return GetPathData()->GetNativePath(); } -void wxGCDC::SetPen( const wxPen &pen ) +// give the native path returned by GetNativePath() back (there might be some deallocations necessary) +void wxGraphicsPath::UnGetNativePath(void *p)const { - 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 ); - } - } + GetPathData()->UnGetNativePath(p); } -void wxGCDC::SetBrush( const wxBrush &brush ) +// transforms each point of this path by the matrix +void wxGraphicsPath::Transform( const wxGraphicsMatrix& matrix ) { - 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 ); - } - } + AllocExclusive(); + GetPathData()->Transform(matrix.GetMatrixData()); } -void wxGCDC::SetBackground( const wxBrush &brush ) +// gets the bounding box enclosing all points (possibly including control points) +void wxGraphicsPath::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const { - if (m_backgroundBrush == brush) - return; - - m_backgroundBrush = brush; - if (!m_backgroundBrush.Ok()) - return; + GetPathData()->GetBox(x,y,w,h); } -void wxGCDC::SetLogicalFunction( int function ) +bool wxGraphicsPath::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const { - if (m_logicalFunction == function) - return; + return GetPathData()->Contains(x,y,fillStyle); +} - m_logicalFunction = function; -#if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES +// +// Emulations, these mus be implemented in the ...Data classes in order to allow for proper overrides +// - 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 +void wxGraphicsPathData::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) +{ + // calculate using degree elevation to a cubic bezier + wxPoint2DDouble c1; + wxPoint2DDouble c2; + wxPoint2DDouble start; + GetCurrentPoint(&start.m_x,&start.m_y); + wxPoint2DDouble end(x,y); + wxPoint2DDouble c(cx,cy); + c1 = wxDouble(1/3.0) * start + wxDouble(2/3.0) * c; + c2 = wxDouble(2/3.0) * c + wxDouble(1/3.0) * end; + AddCurveToPoint(c1.m_x,c1.m_y,c2.m_x,c2.m_y,x,y); } -bool wxGCDC::DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), - const wxColour& WXUNUSED(col), int WXUNUSED(style)) +void wxGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) { - return false; + MoveToPoint(x,y); + AddLineToPoint(x,y+h); + AddLineToPoint(x+w,y+h); + AddLineToPoint(x+w,y); + CloseSubpath(); } -bool wxGCDC::DoGetPixel( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), wxColour *WXUNUSED(col) ) const +void wxGraphicsPathData::AddCircle( wxDouble x, wxDouble y, wxDouble r ) { - // wxCHECK_MSG( 0 , false, wxT("wxGCDC(cg)::DoGetPixel - not implemented") ); - return false; + MoveToPoint(x+r,y); + AddArc( x,y,r,0,2*M_PI,false); + CloseSubpath(); } -void wxGCDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 ) +void wxGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) { - wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLine - invalid DC") ); - -#if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES + if (w <= 0. || h <= 0.) + return; - 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); + wxDouble rw = w/2; + wxDouble rh = h/2; + wxDouble xc = x + rw; + wxDouble yc = y + rh; + wxGraphicsMatrix m = GetRenderer()->CreateMatrix(); + m.Translate(xc,yc); + m.Scale(rw/rh,1.0); + wxGraphicsPath p = GetRenderer()->CreatePath(); + p.AddCircle(0,0,rh); + p.Transform(m); + AddPath(p.GetPathData()); +} - CalcBoundingBox(x1, y1); - CalcBoundingBox(x2, y2); +void wxGraphicsPathData::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) +{ + if ( radius == 0 ) + AddRectangle(x,y,w,h); + else + { + MoveToPoint( x + w, y + h / 2); + AddArcToPoint(x + w, y + h, x + w / 2, y + h, radius); + AddArcToPoint(x, y + h, x, y + h / 2, radius); + AddArcToPoint(x, y , x + w / 2, y, radius); + AddArcToPoint(x + w, y, x + w, y + h / 2, radius); + CloseSubpath(); + } } -void wxGCDC::DoCrossHair( wxCoord x, wxCoord y ) +// draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1) +void wxGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) { - wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoCrossHair - invalid DC") ); + wxPoint2DDouble current; + GetCurrentPoint(¤t.m_x,¤t.m_y); + wxPoint2DDouble p1(x1,y1); + wxPoint2DDouble p2(x2,y2); - if ( m_logicalFunction != wxCOPY ) - return; + wxPoint2DDouble v1 = current - p1; + v1.Normalize(); + wxPoint2DDouble v2 = p2 - p1; + v2.Normalize(); - int w = 0, h = 0; + wxDouble alpha = v1.GetVectorAngle() - v2.GetVectorAngle(); - GetSize( &w, &h ); + if ( alpha < 0 ) + alpha = 360 + alpha; + // TODO obtuse angles - wxCoord xx = LogicalToDeviceX(x); - wxCoord yy = LogicalToDeviceY(y); - wxCoord xw = LogicalToDeviceX(w); - wxCoord x0 = LogicalToDeviceX(0); - wxCoord y0 = LogicalToDeviceY(0); - wxCoord yh = LogicalToDeviceY(h); + alpha = DegToRad(alpha); - m_graphicContext->StrokeLine(x0,yy,xw,yy); - m_graphicContext->StrokeLine(xx,y0,xx,yh); + wxDouble dist = r / sin(alpha/2) * cos(alpha/2); + // calculate tangential points + wxPoint2DDouble t1 = dist*v1 + p1; + wxPoint2DDouble t2 = dist*v2 + p1; - CalcBoundingBox(x0, y0); - CalcBoundingBox(x0+xw, y0+yh); -} + wxPoint2DDouble nv1 = v1; + nv1.SetVectorAngle(v1.GetVectorAngle()-90); + wxPoint2DDouble c = t1 + r*nv1; -void wxGCDC::DoDrawArc( wxCoord x1, wxCoord y1, - wxCoord x2, wxCoord y2, - wxCoord xc, wxCoord yc ) -{ - wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawArc - invalid DC") ); + wxDouble a1 = v1.GetVectorAngle()+90; + wxDouble a2 = v2.GetVectorAngle()-90; - if ( m_logicalFunction != wxCOPY ) - return; + AddLineToPoint(t1.m_x,t1.m_y); + AddArc(c.m_x,c.m_y,r,DegToRad(a1),DegToRad(a2),true); + AddLineToPoint(p2.m_x,p2.m_y); +} - wxCoord xx1 = LogicalToDeviceX(x1); - wxCoord yy1 = LogicalToDeviceY(y1); - wxCoord xx2 = LogicalToDeviceX(x2); - wxCoord yy2 = LogicalToDeviceY(y2); - wxCoord xxc = LogicalToDeviceX(xc); - wxCoord yyc = LogicalToDeviceY(yc); +//----------------------------------------------------------------------------- +// wxGraphicsContext Convenience Methods +//----------------------------------------------------------------------------- - 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; - } +IMPLEMENT_ABSTRACT_CLASS(wxGraphicsContext, wxObject) - 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; +wxGraphicsContext::wxGraphicsContext(wxGraphicsRenderer* renderer) : + wxGraphicsObject(renderer), + m_antialias(wxANTIALIAS_DEFAULT), + m_composition(wxCOMPOSITION_OVER) +{ } -void wxGCDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord w, wxCoord h, - double sa, double ea ) +wxGraphicsContext::~wxGraphicsContext() { - 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; +bool wxGraphicsContext::StartDoc(const wxString& WXUNUSED(message)) +{ + return true; +} - 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 wxGraphicsContext::EndDoc() +{ } -void wxGCDC::DoDrawPoint( wxCoord x, wxCoord y ) +void wxGraphicsContext::StartPage(wxDouble WXUNUSED(width), + wxDouble WXUNUSED(height)) { - wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawPoint - invalid DC") ); +} - DoDrawLine( x , y , x + 1 , y + 1 ); +void wxGraphicsContext::EndPage() +{ } -void wxGCDC::DoDrawLines(int n, wxPoint points[], - wxCoord xoffset, wxCoord yoffset) +void wxGraphicsContext::Flush() { - wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLines - invalid DC") ); +} -#if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES +#if 0 +void wxGraphicsContext::SetAlpha( wxDouble WXUNUSED(alpha) ) +{ +} - if ( m_logicalFunction != wxCOPY ) - return; +wxDouble wxGraphicsContext::GetAlpha() const +{ + return 1.0; +} #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; +void wxGraphicsContext::GetSize( wxDouble* width, wxDouble* height) +{ + *width = 10000.0; + *height = 10000.0; } -#if wxUSE_SPLINES -void wxGCDC::DoDrawSpline(wxList *points) +void wxGraphicsContext::GetDPI( wxDouble* dpiX, wxDouble* dpiY) { - 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(); + *dpiX = 72.0; + *dpiY = 72.0; +} - wxCoord x1 = p->x; - wxCoord y1 = p->y; +// sets the pen +void wxGraphicsContext::SetPen( const wxGraphicsPen& pen ) +{ + m_pen = pen; +} - node = node->GetNext(); - p = (wxPoint *)node->GetData(); +void wxGraphicsContext::SetPen( const wxPen& pen ) +{ + if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT ) + SetPen( wxNullGraphicsPen ); + else + SetPen( CreatePen( pen ) ); +} - wxCoord x2 = p->x; - wxCoord y2 = p->y; - wxCoord cx1 = ( x1 + x2 ) / 2; - wxCoord cy1 = ( y1 + y2 ) / 2; +// sets the brush for filling +void wxGraphicsContext::SetBrush( const wxGraphicsBrush& brush ) +{ + m_brush = brush; +} - path->MoveToPoint( LogicalToDeviceX( x1 ) , LogicalToDeviceY( y1 ) ); - path->AddLineToPoint( LogicalToDeviceX( cx1 ) , LogicalToDeviceY( cy1 ) ); -#if !wxUSE_STL +void wxGraphicsContext::SetBrush( const wxBrush& brush ) +{ + if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT ) + SetBrush( wxNullGraphicsBrush ); + else + SetBrush( CreateBrush( brush ) ); +} - while ((node = node->GetNext()) != NULL) -#else +// sets the brush for filling +void wxGraphicsContext::SetFont( const wxGraphicsFont& font ) +{ + m_font = font; +} - while ((node = node->GetNext())) -#endif // !wxUSE_STL +void wxGraphicsContext::SetFont( const wxFont& font, const wxColour& colour ) +{ + if ( font.Ok() ) + SetFont( CreateFont( font, colour ) ); + else + SetFont( wxNullGraphicsFont ); +} - { - 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; - } +void wxGraphicsContext::DrawPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle ) +{ + FillPath( path , fillStyle ); + StrokePath( path ); +} - path->AddLineToPoint( LogicalToDeviceX( x2 ) , LogicalToDeviceY( y2 ) ); +void +wxGraphicsContext::DoDrawRotatedText(const wxString &str, + wxDouble x, + wxDouble y, + wxDouble angle) +{ + Translate(x,y); + Rotate( -angle ); + DrawText( str , 0, 0 ); + Rotate( angle ); + Translate(-x,-y); +} - m_graphicContext->StrokePath( path ); - delete path; +void +wxGraphicsContext::DoDrawFilledText(const wxString &str, + wxDouble x, + wxDouble y, + const wxGraphicsBrush& backgroundBrush) +{ + wxGraphicsBrush formerBrush = m_brush; + wxGraphicsPen formerPen = m_pen; + wxDouble width; + wxDouble height; + wxDouble descent; + wxDouble externalLeading; + GetTextExtent( str , &width, &height, &descent, &externalLeading ); + SetBrush( backgroundBrush ); + // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape + SetPen( wxNullGraphicsPen ); + + wxGraphicsPath path = CreatePath(); + path.AddRectangle( x , y, width, height ); + FillPath( path ); + + DrawText( str, x ,y); + SetBrush( formerBrush ); + SetPen( formerPen ); +} + +void +wxGraphicsContext::DoDrawRotatedFilledText(const wxString &str, + wxDouble x, wxDouble y, + wxDouble angle, + const wxGraphicsBrush& backgroundBrush) +{ + wxGraphicsBrush formerBrush = m_brush; + wxGraphicsPen formerPen = m_pen; + + wxDouble width; + wxDouble height; + wxDouble descent; + wxDouble externalLeading; + GetTextExtent( str , &width, &height, &descent, &externalLeading ); + SetBrush( backgroundBrush ); + // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape + SetPen( wxNullGraphicsPen ); + + wxGraphicsPath path = CreatePath(); + path.MoveToPoint( x , y ); + path.AddLineToPoint( (int) (x + sin(angle) * height) , (int) (y + cos(angle) * height) ); + path.AddLineToPoint( + (int) (x + sin(angle) * height + cos(angle) * width) , + (int) (y + cos(angle) * height - sin(angle) * width)); + path.AddLineToPoint((int) (x + cos(angle) * width) , (int) (y - sin(angle) * width) ); + FillPath( path ); + DrawText( str, x ,y, angle); + SetBrush( formerBrush ); + SetPen( formerPen ); } -#endif // wxUSE_SPLINES -void wxGCDC::DoDrawPolygon( int n, wxPoint points[], - wxCoord xoffset, wxCoord yoffset, - int fillStyle ) +void wxGraphicsContext::StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2) { - 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; + wxGraphicsPath path = CreatePath(); + path.MoveToPoint(x1, y1); + path.AddLineToPoint( x2, y2 ); + StrokePath( path ); +} - bool closeIt = false; - if (points[n-1] != points[0]) - closeIt = true; +void wxGraphicsContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h) +{ + wxGraphicsPath path = CreatePath(); + path.AddRectangle( x , y , w , h ); + DrawPath( path ); +} - 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]; +void wxGraphicsContext::DrawEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) +{ + wxGraphicsPath path = CreatePath(); + path.AddEllipse(x,y,w,h); + DrawPath(path); +} - m_graphicContext->DrawLines( n+(closeIt?1:0) , pointsD, fillStyle); - delete[] pointsD; +void wxGraphicsContext::DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) +{ + wxGraphicsPath path = CreatePath(); + path.AddRoundedRectangle(x,y,w,h,radius); + DrawPath(path); } -void wxGCDC::DoDrawPolyPolygon(int n, - int count[], - wxPoint points[], - wxCoord xoffset, - wxCoord yoffset, - int fillStyle) +void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *points) { 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; + wxGraphicsPath path = CreatePath(); + path.MoveToPoint(points[0].m_x, points[0].m_y); + for ( size_t i = 1; i < n; ++i) + path.AddLineToPoint( points[i].m_x, points[i].m_y ); + StrokePath( path ); } -void wxGCDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) +void wxGraphicsContext::DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode fillStyle) { - 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); + wxASSERT(n > 1); + wxGraphicsPath path = CreatePath(); + path.MoveToPoint(points[0].m_x, points[0].m_y); + for ( size_t i = 1; i < n; ++i) + path.AddLineToPoint( points[i].m_x, points[i].m_y ); + DrawPath( path , fillStyle); } -void wxGCDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, - wxCoord width, wxCoord height, - double radius) +void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints) { - 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) + wxASSERT(n > 0); + wxGraphicsPath path = CreatePath(); + for ( size_t i = 0; i < n; ++i) { - hh = -hh; - yy = yy - hh; + path.MoveToPoint(beginPoints[i].m_x, beginPoints[i].m_y); + path.AddLineToPoint( endPoints[i].m_x, endPoints[i].m_y ); } - - m_graphicContext->DrawRoundedRectangle( xx,yy,ww,hh,radius); + StrokePath( path ); } -void wxGCDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) +// create a 'native' matrix corresponding to these values +wxGraphicsMatrix wxGraphicsContext::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d, + wxDouble tx, wxDouble ty) const { - 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); + return GetRenderer()->CreateMatrix(a,b,c,d,tx,ty); } -bool wxGCDC::CanDrawBitmap() const +wxGraphicsPath wxGraphicsContext::CreatePath() const { - return true; + return GetRenderer()->CreatePath(); } -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 ) +wxGraphicsPen wxGraphicsContext::CreatePen(const wxPen& pen) const { - 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 = dynamic_cast(source); - 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; + return GetRenderer()->CreatePen(pen); } -void wxGCDC::DoDrawRotatedText(const wxString& str, wxCoord x, wxCoord y, - double angle) +wxGraphicsBrush wxGraphicsContext::CreateBrush(const wxBrush& brush ) const { - 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 )); + return GetRenderer()->CreateBrush(brush); } -void wxGCDC::DoDrawText(const wxString& str, wxCoord x, wxCoord y) +// sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2 +wxGraphicsBrush wxGraphicsContext::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, + const wxColour&c1, const wxColour&c2) const { - 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); + return GetRenderer()->CreateLinearGradientBrush(x1,y1,x2,y2,c1,c2); } -bool wxGCDC::CanGetTextExtent() const +// sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc) +// with radius r and color cColor +wxGraphicsBrush wxGraphicsContext::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius, + const wxColour &oColor, const wxColour &cColor) const { - wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::CanGetTextExtent - invalid DC") ); - - return true; + return GetRenderer()->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor); } -void wxGCDC::DoGetTextExtent( const wxString &str, wxCoord *width, wxCoord *height, - wxCoord *descent, wxCoord *externalLeading , - wxFont *theFont ) const +// sets the font +wxGraphicsFont wxGraphicsContext::CreateFont( const wxFont &font , const wxColour &col ) const { - wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoGetTextExtent - invalid DC") ); - - if ( theFont ) - { - m_graphicContext->SetFont( *theFont ); - } - - 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 ); - } + return GetRenderer()->CreateFont(font,col); } -bool wxGCDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const +wxGraphicsBitmap wxGraphicsContext::CreateBitmap( const wxBitmap& bmp ) 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; +#ifndef __WXGTK20__ + return GetRenderer()->CreateBitmap(bmp); +#else + return wxNullGraphicsBitmap; +#endif } -wxCoord wxGCDC::GetCharWidth(void) const +wxGraphicsBitmap wxGraphicsContext::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) const { - wxCoord width; - DoGetTextExtent( wxT("g") , &width , NULL , NULL , NULL , NULL ); - - return width; +#ifndef __WXGTK20__ + return GetRenderer()->CreateSubBitmap(bmp,x,y,w,h); +#else + return wxNullGraphicsBitmap; +#endif } -wxCoord wxGCDC::GetCharHeight(void) const +/* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC& dc) { - wxCoord height; - DoGetTextExtent( wxT("g") , NULL , &height , NULL , NULL , NULL ); - - return height; + return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); } -void wxGCDC::Clear(void) +/* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxMemoryDC& dc) { - 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 ); + return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); } -void wxGCDC::DoGetSize(int *width, int *height) const +#if wxUSE_PRINTING_ARCHITECTURE +/* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxPrinterDC& dc) { - *width = 1000; - *height = 1000; + return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); } +#endif -void wxGCDC::DoGradientFillLinear(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - wxDirection nDirection ) +wxGraphicsContext* wxGraphicsContext::CreateFromNative( void * context ) { - 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->SetLinearGradientBrush( - 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); + return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeContext(context); } -void wxGCDC::DoGradientFillConcentric(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - const wxPoint& circleCenter) +wxGraphicsContext* wxGraphicsContext::CreateFromNativeWindow( void * window ) { - //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->SetRadialGradientBrush( - xx+LogicalToDeviceX(circleCenter.x),yy+LogicalToDeviceY(circleCenter.y), - xx+LogicalToDeviceX(circleCenter.x),yy+LogicalToDeviceY(circleCenter.y), - LogicalToDeviceXRel(nRadius), - initialColour,destColour); + return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeWindow(window); +} - m_graphicContext->DrawRectangle( xx,yy,ww,hh); - m_graphicContext->SetPen(m_pen); +wxGraphicsContext* wxGraphicsContext::Create( wxWindow* window ) +{ + return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(window); } -void wxGCDC::DoDrawCheckMark(wxCoord x, wxCoord y, - wxCoord width, wxCoord height) +wxGraphicsContext* wxGraphicsContext::Create() { - wxDCBase::DoDrawCheckMark(x,y,width,height); + return wxGraphicsRenderer::GetDefaultRenderer()->CreateMeasuringContext(); } +//----------------------------------------------------------------------------- +// wxGraphicsRenderer +//----------------------------------------------------------------------------- + +IMPLEMENT_ABSTRACT_CLASS(wxGraphicsRenderer, wxObject) + #endif // wxUSE_GRAPHICS_CONTEXT