contrib/include/wx/ogl/drawn.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        drawn.h
   3 // Purpose:     wxDrawnShape
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     12/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _OGL_DRAWN_H_
  13 #define _OGL_DRAWN_H_
  14
  15 #if defined(__GNUG__) && !defined(__APPLE__)
  16 #pragma interface "drawn.h"
  17 #endif
  18
  19
  20 #define oglMETAFLAGS_OUTLINE         1
  21 #define oglMETAFLAGS_ATTACHMENTS     2
  22
  23 class WXDLLIMPEXP_OGL wxDrawnShape;
  24 class WXDLLIMPEXP_OGL wxPseudoMetaFile: public wxObject
  25 {
  26  DECLARE_DYNAMIC_CLASS(wxPseudoMetaFile)
  27  public:
  28   wxPseudoMetaFile();
  29   wxPseudoMetaFile(wxPseudoMetaFile& mf);
  30   ~wxPseudoMetaFile();
  31
  32   void Draw(wxDC& dc, double xoffset, double yoffset);
  33
  34 #if wxUSE_PROLOGIO
  35   void WriteAttributes(wxExpr *clause, int whichAngle);
  36   void ReadAttributes(wxExpr *clause, int whichAngle);
  37 #endif
  38
  39   void Clear();
  40
  41   void Copy(wxPseudoMetaFile& copy);
  42
  43   void Scale(double sx, double sy);
  44   void ScaleTo(double w, double h); // Scale to fit size
  45   void Translate(double x, double y);
  46
  47   // Rotate about the given axis by theta radians from the x axis.
  48   void Rotate(double x, double y, double theta);
  49
  50   bool LoadFromMetaFile(const wxString& filename, double *width, double *height);
  51
  52   void GetBounds(double *minX, double *minY, double *maxX, double *maxY);
  53
  54   // Calculate size from current operations
  55   void CalculateSize(wxDrawnShape* shape);
  56
  57   inline wxList& GetOutlineColours() const { return (wxList&) m_outlineColours; }
  58   inline wxList& GetFillColours() const { return (wxList&) m_fillColours; }
  59   inline void SetRotateable(bool rot) { m_rotateable = rot; }
  60   inline bool GetRotateable() const { return m_rotateable; }
  61
  62   inline void SetSize(double w, double h) { m_width = w; m_height = h; }
  63
  64   inline void SetFillBrush(wxBrush* brush) { m_fillBrush = brush; }
  65   inline wxBrush* GetFillBrush() const { return m_fillBrush; }
  66
  67   inline void SetOutlinePen(wxPen* pen) { m_outlinePen = pen; }
  68   inline wxPen* GetOutlinePen() const { return m_outlinePen; }
  69
  70   inline void SetOutlineOp(int op) { m_outlineOp = op; }
  71   inline int GetOutlineOp() const { return m_outlineOp; }
  72
  73   inline wxList& GetOps() const { return (wxList&) m_ops; }
  74
  75   // Is this a valid (non-empty) metafile?
  76   inline bool IsValid() const { return (m_ops.GetCount() > 0); }
  77
  78 public:
  79   /// Set of functions for drawing into a pseudo metafile.
  80   /// They use integers, but doubles are used internally for accuracy
  81   /// when scaling.
  82
  83   virtual void DrawLine(const wxPoint& pt1, const wxPoint& pt2);
  84   virtual void DrawRectangle(const wxRect& rect);
  85   virtual void DrawRoundedRectangle(const wxRect& rect, double radius);
  86   virtual void DrawArc(const wxPoint& centrePt, const wxPoint& startPt, const wxPoint& endPt);
  87   virtual void DrawEllipticArc(const wxRect& rect, double startAngle, double endAngle);
  88   virtual void DrawEllipse(const wxRect& rect);
  89   virtual void DrawPoint(const wxPoint& pt);
  90   virtual void DrawText(const wxString& text, const wxPoint& pt);
  91   virtual void DrawLines(int n, wxPoint pts[]);
  92   // flags:
  93   // oglMETAFLAGS_OUTLINE: will be used for drawing the outline and
  94   //                       also drawing lines/arrows at the circumference.
  95   // oglMETAFLAGS_ATTACHMENTS: will be used for initialising attachment points at
  96   //                       the vertices (perhaps a rare case...)
  97   virtual void DrawPolygon(int n, wxPoint pts[], int flags = 0);
  98   virtual void DrawSpline(int n, wxPoint pts[]);
  99
 100   virtual void SetClippingRect(const wxRect& rect);
 101   virtual void DestroyClippingRect();
 102
 103   virtual void SetPen(wxPen* pen, bool isOutline = false);     // TODO: eventually, just store GDI object attributes, not actual
 104   virtual void SetBrush(wxBrush* brush, bool isFill = false);  // pens/brushes etc.
 105   virtual void SetFont(wxFont* font);
 106   virtual void SetTextColour(const wxColour& colour);
 107   virtual void SetBackgroundColour(const wxColour& colour);
 108   virtual void SetBackgroundMode(int mode);
 109
 110 public:
 111   bool              m_rotateable;
 112   double            m_width;
 113   double            m_height;
 114   wxList            m_ops; // List of drawing operations (see drawnp.h)
 115   wxList            m_gdiObjects; // List of pens, brushes and fonts for this object.
 116   int               m_outlineOp;  // The op representing the outline, if any
 117
 118   // Pen/brush specifying outline/fill colours
 119   // to override operations.
 120   wxPen*            m_outlinePen;
 121   wxBrush*          m_fillBrush;
 122   wxList            m_outlineColours; // List of the GDI operations that comprise the outline
 123   wxList            m_fillColours; // List of the GDI operations that fill the shape
 124   double             m_currentRotation;
 125 };
 126
 127 #define oglDRAWN_ANGLE_0        0
 128 #define oglDRAWN_ANGLE_90       1
 129 #define oglDRAWN_ANGLE_180      2
 130 #define oglDRAWN_ANGLE_270      3
 131
 132 class WXDLLIMPEXP_OGL wxDrawnShape: public wxRectangleShape
 133 {
 134  DECLARE_DYNAMIC_CLASS(wxDrawnShape)
 135  public:
 136   wxDrawnShape();
 137   ~wxDrawnShape();
 138
 139   void OnDraw(wxDC& dc);
 140
 141 #if wxUSE_PROLOGIO
 142   // I/O
 143   void WriteAttributes(wxExpr *clause);
 144   void ReadAttributes(wxExpr *clause);
 145 #endif
 146
 147   // Does the copying for this object
 148   void Copy(wxShape& copy);
 149
 150   void Scale(double sx, double sy);
 151   void Translate(double x, double y);
 152   // Rotate about the given axis by theta radians from the x axis.
 153   void Rotate(double x, double y, double theta);
 154
 155   // Get current rotation
 156   inline double GetRotation() const { return m_rotation; }
 157
 158   void SetSize(double w, double h, bool recursive = true);
 159   bool LoadFromMetaFile(const wxString& filename);
 160
 161   inline void SetSaveToFile(bool save) { m_saveToFile = save; }
 162   inline wxPseudoMetaFile& GetMetaFile(int which = 0) const { return (wxPseudoMetaFile&) m_metafiles[which]; }
 163
 164   void OnDrawOutline(wxDC& dc, double x, double y, double w, double h);
 165
 166   // Get the perimeter point using the special outline op, if there is one,
 167   // otherwise use default wxRectangleShape scheme
 168   bool GetPerimeterPoint(double x1, double y1,
 169                                      double x2, double y2,
 170                                      double *x3, double *y3);
 171
 172   /// Set of functions for drawing into a pseudo metafile.
 173   /// They use integers, but doubles are used internally for accuracy
 174   /// when scaling.
 175
 176   virtual void DrawLine(const wxPoint& pt1, const wxPoint& pt2);
 177   virtual void DrawRectangle(const wxRect& rect);
 178   virtual void DrawRoundedRectangle(const wxRect& rect, double radius);
 179   virtual void DrawArc(const wxPoint& centrePt, const wxPoint& startPt, const wxPoint& endPt);
 180   virtual void DrawEllipticArc(const wxRect& rect, double startAngle, double endAngle);
 181   virtual void DrawEllipse(const wxRect& rect);
 182   virtual void DrawPoint(const wxPoint& pt);
 183   virtual void DrawText(const wxString& text, const wxPoint& pt);
 184   virtual void DrawLines(int n, wxPoint pts[]);
 185   virtual void DrawPolygon(int n, wxPoint pts[], int flags = 0);
 186   virtual void DrawSpline(int n, wxPoint pts[]);
 187
 188   virtual void SetClippingRect(const wxRect& rect);
 189   virtual void DestroyClippingRect();
 190
 191   virtual void SetDrawnPen(wxPen* pen, bool isOutline = false);     // TODO: eventually, just store GDI object attributes, not actual
 192   virtual void SetDrawnBrush(wxBrush* brush, bool isFill = false);  // pens/brushes etc.
 193   virtual void SetDrawnFont(wxFont* font);
 194   virtual void SetDrawnTextColour(const wxColour& colour);
 195   virtual void SetDrawnBackgroundColour(const wxColour& colour);
 196   virtual void SetDrawnBackgroundMode(int mode);
 197
 198   // Set the width/height according to the shapes in the metafile.
 199   // Call this after drawing into the shape.
 200   inline void CalculateSize() { m_metafiles[m_currentAngle].CalculateSize(this); }
 201
 202   inline void DrawAtAngle(int angle) { m_currentAngle = angle; };
 203
 204   inline int GetAngle() const { return m_currentAngle; }
 205
 206 // Implementation
 207 protected:
 208   // Which metafile do we use now? Based on current rotation and validity
 209   // of metafiles.
 210   int DetermineMetaFile(double rotation);
 211
 212 private:
 213   // One metafile for each 90 degree rotation (or just a single one).
 214   wxPseudoMetaFile      m_metafiles[4];
 215
 216   // Don't save all wxDrawnShape metafiles to file: sometimes
 217   // we take the metafile data from a symbol library.
 218   bool                  m_saveToFile;
 219
 220   // Which angle are we using/drawing into?
 221   int                   m_currentAngle;
 222 };
 223
 224 #endif
 225     // _DRAWN_H_
 226