///////////////////////////////////////////////////////////////////////////// // Name: dc.h // Purpose: wxDC class // Author: Julian Smart // Modified by: // Created: 17/09/98 // RCS-ID: $Id$ // Copyright: (c) Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_DC_H_ #define _WX_DC_H_ #include "wx/pen.h" #include "wx/brush.h" #include "wx/icon.h" #include "wx/font.h" #include "wx/gdicmn.h" //----------------------------------------------------------------------------- // constants //----------------------------------------------------------------------------- #ifndef MM_TEXT #define MM_TEXT 0 #define MM_ISOTROPIC 1 #define MM_ANISOTROPIC 2 #define MM_LOMETRIC 3 #define MM_HIMETRIC 4 #define MM_TWIPS 5 #define MM_POINTS 6 #define MM_METRIC 7 #endif //----------------------------------------------------------------------------- // wxDC //----------------------------------------------------------------------------- class WXDLLEXPORT wxDC : public wxDCBase { public: wxDC(); ~wxDC() { } // implement base class pure virtuals // ---------------------------------- virtual wxSize GetPPI() const; virtual void SetMapMode(int mode); virtual void SetUserScale(double x, double y); virtual void SetLogicalScale(double x, double y); virtual void SetLogicalOrigin(wxCoord x, wxCoord y); virtual void SetDeviceOrigin(wxCoord x, wxCoord y); virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp); protected: virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height); virtual void DoGetSizeMM(int* width, int* height) const; public: virtual void ComputeScaleAndOrigin(); wxCoord XDEV2LOG(wxCoord x) const { wxCoord new_x = x - m_deviceOriginX; if (new_x > 0) return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX; else return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX; } wxCoord XDEV2LOGREL(wxCoord x) const { if (x > 0) return (wxCoord)((double)(x) / m_scaleX + 0.5); else return (wxCoord)((double)(x) / m_scaleX - 0.5); } wxCoord YDEV2LOG(wxCoord y) const { wxCoord new_y = y - m_deviceOriginY; if (new_y > 0) return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY; else return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY; } wxCoord YDEV2LOGREL(wxCoord y) const { if (y > 0) return (wxCoord)((double)(y) / m_scaleY + 0.5); else return (wxCoord)((double)(y) / m_scaleY - 0.5); } wxCoord XLOG2DEV(wxCoord x) const { wxCoord new_x = x - m_logicalOriginX; if (new_x > 0) return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX; else return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX; } wxCoord XLOG2DEVREL(wxCoord x) const { if (x > 0) return (wxCoord)((double)(x) * m_scaleX + 0.5); else return (wxCoord)((double)(x) * m_scaleX - 0.5); } wxCoord YLOG2DEV(wxCoord y) const { wxCoord new_y = y - m_logicalOriginY; if (new_y > 0) return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY; else return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY; } wxCoord YLOG2DEVREL(wxCoord y) const { if (y > 0) return (wxCoord)((double)(y) * m_scaleY + 0.5); else return (wxCoord)((double)(y) * m_scaleY - 0.5); } public: // not sure what for, but what is a mm on a screen you don't know the size of? double m_mm_to_pix_x,m_mm_to_pix_y; // recompute scale? bool m_needComputeScaleX, m_needComputeScaleY; private: DECLARE_ABSTRACT_CLASS(wxDC) }; #endif // _WX_DC_H_