include/wx/cocoa/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/cocoa/dc.h
   3 // Purpose:     wxDC
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2003/04/01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 David Elliott
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef __WX_COCOA_DC_H__
  13 #define __WX_COCOA_DC_H__
  14
  15 DECLARE_WXCOCOA_OBJC_CLASS(NSAffineTransform);
  16
  17 #include "wx/dc.h"
  18
  19 class WXDLLIMPEXP_FWD_CORE wxCocoaDCImpl;
  20 WX_DECLARE_LIST(wxCocoaDCImpl, wxCocoaDCStack);
  21
  22 //=========================================================================
  23 // wxDC
  24 //=========================================================================
  25 class WXDLLIMPEXP_CORE wxCocoaDCImpl: public wxDCImpl
  26 {
  27     DECLARE_ABSTRACT_CLASS(wxCocoaDCImpl)
  28     DECLARE_NO_COPY_CLASS(wxCocoaDCImpl)
  29 //-------------------------------------------------------------------------
  30 // Initialization
  31 //-------------------------------------------------------------------------
  32 public:
  33     wxCocoaDCImpl(wxDC *owner);
  34     virtual ~wxCocoaDCImpl();
  35
  36 //-------------------------------------------------------------------------
  37 // wxCocoa specifics
  38 //-------------------------------------------------------------------------
  39 public:
  40     static void CocoaInitializeTextSystem();
  41     static void CocoaShutdownTextSystem();
  42     static WX_NSTextStorage sm_cocoaNSTextStorage;
  43     static WX_NSLayoutManager sm_cocoaNSLayoutManager;
  44     static WX_NSTextContainer sm_cocoaNSTextContainer;
  45     // Create a simple Wx to Bounds transform (just flip the coordinate system)
  46     static WX_NSAffineTransform CocoaGetWxToBoundsTransform(bool isFlipped, float height);
  47 protected:
  48 // DC stack
  49     static wxCocoaDCStack sm_cocoaDCStack;
  50     virtual bool CocoaLockFocus();
  51     virtual bool CocoaUnlockFocus();
  52     bool CocoaUnwindStackAndTakeFocus();
  53     inline bool CocoaTakeFocus()
  54     {
  55         wxCocoaDCStack::compatibility_iterator node = sm_cocoaDCStack.GetFirst();
  56         if(node && (node->GetData() == this))
  57             return true;
  58         return CocoaUnwindStackAndTakeFocus();
  59     }
  60     void CocoaUnwindStackAndLoseFocus();
  61 // DC flipping/transformation
  62     void CocoaApplyTransformations();
  63     void CocoaUnapplyTransformations();
  64     WX_NSAffineTransform m_cocoaWxToBoundsTransform;
  65 // Get bounds rect (for Clear())
  66     // note: we use void * to mean NSRect * so that we can avoid
  67     // putting NSRect in the headers.
  68     virtual bool CocoaGetBounds(void *rectData);
  69 // Blitting
  70     virtual bool CocoaDoBlitOnFocusedDC(wxCoord xdest, wxCoord ydest,
  71         wxCoord width, wxCoord height, wxCoord xsrc, wxCoord ysrc,
  72         int logicalFunc, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask);
  73 //-------------------------------------------------------------------------
  74 // Implementation
  75 //-------------------------------------------------------------------------
  76 public:
  77     // implement base class pure virtuals
  78     // ----------------------------------
  79
  80     virtual void Clear();
  81
  82     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
  83     virtual void EndDoc(void) {};
  84
  85     virtual void StartPage(void) {};
  86     virtual void EndPage(void) {};
  87
  88     virtual void SetFont(const wxFont& font);
  89     virtual void SetPen(const wxPen& pen);
  90     virtual void SetBrush(const wxBrush& brush);
  91     virtual void SetBackground(const wxBrush& brush);
  92     virtual void SetBackgroundMode(int mode) { m_backgroundMode = mode; }
  93     virtual void SetPalette(const wxPalette& palette);
  94
  95     virtual void DestroyClippingRegion();
  96
  97     virtual wxCoord GetCharHeight() const;
  98     virtual wxCoord GetCharWidth() const;
  99     virtual void DoGetTextExtent(const wxString& string,
 100                                  wxCoord *x, wxCoord *y,
 101                                  wxCoord *descent = NULL,
 102                                  wxCoord *externalLeading = NULL,
 103                                  const wxFont *theFont = NULL) const;
 104
 105     virtual bool CanDrawBitmap() const;
 106     virtual bool CanGetTextExtent() const;
 107     virtual int GetDepth() const;
 108     virtual wxSize GetPPI() const;
 109
 110     virtual void SetMapMode(int mode);
 111     virtual void SetUserScale(double x, double y);
 112
 113     virtual void SetLogicalScale(double x, double y);
 114     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 115     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 116     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 117     virtual void SetLogicalFunction(int function);
 118
 119     virtual void SetTextForeground(const wxColour& colour) ;
 120     virtual void SetTextBackground(const wxColour& colour) ;
 121
 122     virtual void ComputeScaleAndOrigin();
 123 protected:
 124     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 125                              int style = wxFLOOD_SURFACE);
 126
 127     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 128
 129     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 130     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 131
 132     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 133                            wxCoord x2, wxCoord y2,
 134                            wxCoord xc, wxCoord yc);
 135
 136     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 137                                    double sa, double ea);
 138
 139     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 140     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 141                                         wxCoord width, wxCoord height,
 142                                         double radius);
 143     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 144
 145     virtual void DoCrossHair(wxCoord x, wxCoord y);
 146
 147     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 148     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 149                               bool useMask = false);
 150
 151     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 152     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 153                                    double angle);
 154
 155     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 156                         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 157                         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 158
 159     // this is gnarly - we can't even call this function DoSetClippingRegion()
 160     // because of virtual function hiding
 161     virtual void DoSetDeviceClippingRegion(const wxRegion& region);
 162     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 163                                      wxCoord width, wxCoord height);
 164
 165     virtual void DoGetSize(int *width, int *height) const;
 166     virtual void DoGetSizeMM(int* width, int* height) const;
 167
 168     virtual void DoDrawLines(int n, wxPoint points[],
 169                              wxCoord xoffset, wxCoord yoffset);
 170     virtual void DoDrawPolygon(int n, wxPoint points[],
 171                                wxCoord xoffset, wxCoord yoffset,
 172                                int fillStyle = wxODDEVEN_RULE);
 173 };
 174
 175 #endif // __WX_COCOA_DC_H__