| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: wx/private/graphics.h |
| 3 | // Purpose: private graphics context header |
| 4 | // Author: Stefan Csomor |
| 5 | // Modified by: |
| 6 | // Created: |
| 7 | // Copyright: (c) Stefan Csomor |
| 8 | // RCS-ID: $Id: graphics.h 50348 2007-11-30 13:48:22Z RR $ |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifndef _WX_GRAPHICS_PRIVATE_H_ |
| 13 | #define _WX_GRAPHICS_PRIVATE_H_ |
| 14 | |
| 15 | #if wxUSE_GRAPHICS_CONTEXT |
| 16 | |
| 17 | #include "wx/graphics.h" |
| 18 | |
| 19 | class WXDLLIMPEXP_CORE wxGraphicsObjectRefData : public wxObjectRefData |
| 20 | { |
| 21 | public : |
| 22 | wxGraphicsObjectRefData( wxGraphicsRenderer* renderer ); |
| 23 | wxGraphicsObjectRefData( const wxGraphicsObjectRefData* data ); |
| 24 | wxGraphicsRenderer* GetRenderer() const ; |
| 25 | virtual wxGraphicsObjectRefData* Clone() const ; |
| 26 | |
| 27 | protected : |
| 28 | wxGraphicsRenderer* m_renderer; |
| 29 | } ; |
| 30 | |
| 31 | class WXDLLIMPEXP_CORE wxGraphicsMatrixData : public wxGraphicsObjectRefData |
| 32 | { |
| 33 | public : |
| 34 | wxGraphicsMatrixData( wxGraphicsRenderer* renderer) : |
| 35 | wxGraphicsObjectRefData(renderer) {} |
| 36 | |
| 37 | virtual ~wxGraphicsMatrixData() {} |
| 38 | |
| 39 | // concatenates the matrix |
| 40 | virtual void Concat( const wxGraphicsMatrixData *t ) = 0; |
| 41 | |
| 42 | // sets the matrix to the respective values |
| 43 | virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, |
| 44 | wxDouble tx=0.0, wxDouble ty=0.0) = 0; |
| 45 | |
| 46 | // gets the component valuess of the matrix |
| 47 | virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL, wxDouble* c=NULL, |
| 48 | wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const = 0; |
| 49 | |
| 50 | // makes this the inverse matrix |
| 51 | virtual void Invert() = 0; |
| 52 | |
| 53 | // returns true if the elements of the transformation matrix are equal ? |
| 54 | virtual bool IsEqual( const wxGraphicsMatrixData* t) const = 0; |
| 55 | |
| 56 | // return true if this is the identity matrix |
| 57 | virtual bool IsIdentity() const = 0; |
| 58 | |
| 59 | // |
| 60 | // transformation |
| 61 | // |
| 62 | |
| 63 | // add the translation to this matrix |
| 64 | virtual void Translate( wxDouble dx , wxDouble dy ) = 0; |
| 65 | |
| 66 | // add the scale to this matrix |
| 67 | virtual void Scale( wxDouble xScale , wxDouble yScale ) = 0; |
| 68 | |
| 69 | // add the rotation to this matrix (radians) |
| 70 | virtual void Rotate( wxDouble angle ) = 0; |
| 71 | |
| 72 | // |
| 73 | // apply the transforms |
| 74 | // |
| 75 | |
| 76 | // applies that matrix to the point |
| 77 | virtual void TransformPoint( wxDouble *x, wxDouble *y ) const = 0; |
| 78 | |
| 79 | // applies the matrix except for translations |
| 80 | virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const =0; |
| 81 | |
| 82 | // returns the native representation |
| 83 | virtual void * GetNativeMatrix() const = 0; |
| 84 | } ; |
| 85 | |
| 86 | class WXDLLIMPEXP_CORE wxGraphicsPathData : public wxGraphicsObjectRefData |
| 87 | { |
| 88 | public : |
| 89 | wxGraphicsPathData(wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData(renderer) {} |
| 90 | virtual ~wxGraphicsPathData() {} |
| 91 | |
| 92 | // |
| 93 | // These are the path primitives from which everything else can be constructed |
| 94 | // |
| 95 | |
| 96 | // begins a new subpath at (x,y) |
| 97 | virtual void MoveToPoint( wxDouble x, wxDouble y ) = 0; |
| 98 | |
| 99 | // adds a straight line from the current point to (x,y) |
| 100 | virtual void AddLineToPoint( wxDouble x, wxDouble y ) = 0; |
| 101 | |
| 102 | // adds a cubic Bezier curve from the current point, using two control points and an end point |
| 103 | virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) = 0; |
| 104 | |
| 105 | // adds another path |
| 106 | virtual void AddPath( const wxGraphicsPathData* path ) =0; |
| 107 | |
| 108 | // closes the current sub-path |
| 109 | virtual void CloseSubpath() = 0; |
| 110 | |
| 111 | // gets the last point of the current path, (0,0) if not yet set |
| 112 | virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const = 0; |
| 113 | |
| 114 | // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle |
| 115 | virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) = 0; |
| 116 | |
| 117 | // |
| 118 | // These are convenience functions which - if not available natively will be assembled |
| 119 | // using the primitives from above |
| 120 | // |
| 121 | |
| 122 | // adds a quadratic Bezier curve from the current point, using a control point and an end point |
| 123 | virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ); |
| 124 | |
| 125 | // appends a rectangle as a new closed subpath |
| 126 | virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ); |
| 127 | |
| 128 | // appends an ellipsis as a new closed subpath fitting the passed rectangle |
| 129 | virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r ); |
| 130 | |
| 131 | // 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) |
| 132 | virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) ; |
| 133 | |
| 134 | // appends an ellipse |
| 135 | virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h); |
| 136 | |
| 137 | // appends a rounded rectangle |
| 138 | virtual void AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius); |
| 139 | |
| 140 | // returns the native path |
| 141 | virtual void * GetNativePath() const = 0; |
| 142 | |
| 143 | // give the native path returned by GetNativePath() back (there might be some deallocations necessary) |
| 144 | virtual void UnGetNativePath(void *p) const= 0; |
| 145 | |
| 146 | // transforms each point of this path by the matrix |
| 147 | virtual void Transform( const wxGraphicsMatrixData* matrix ) =0; |
| 148 | |
| 149 | // gets the bounding box enclosing all points (possibly including control points) |
| 150 | virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const=0; |
| 151 | |
| 152 | virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const=0; |
| 153 | }; |
| 154 | |
| 155 | #endif |
| 156 | |
| 157 | #endif // _WX_GRAPHICS_PRIVATE_H_ |