| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: dc.h |
| 3 | // Purpose: wxDC class |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 17/09/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifndef _WX_DC_H_ |
| 13 | #define _WX_DC_H_ |
| 14 | |
| 15 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 16 | #pragma interface "dc.h" |
| 17 | #endif |
| 18 | |
| 19 | #include "wx/pen.h" |
| 20 | #include "wx/brush.h" |
| 21 | #include "wx/icon.h" |
| 22 | #include "wx/font.h" |
| 23 | #include "wx/gdicmn.h" |
| 24 | |
| 25 | //----------------------------------------------------------------------------- |
| 26 | // constants |
| 27 | //----------------------------------------------------------------------------- |
| 28 | |
| 29 | #ifndef MM_TEXT |
| 30 | #define MM_TEXT 0 |
| 31 | #define MM_ISOTROPIC 1 |
| 32 | #define MM_ANISOTROPIC 2 |
| 33 | #define MM_LOMETRIC 3 |
| 34 | #define MM_HIMETRIC 4 |
| 35 | #define MM_TWIPS 5 |
| 36 | #define MM_POINTS 6 |
| 37 | #define MM_METRIC 7 |
| 38 | #endif |
| 39 | |
| 40 | //----------------------------------------------------------------------------- |
| 41 | // wxDC |
| 42 | //----------------------------------------------------------------------------- |
| 43 | |
| 44 | class WXDLLEXPORT wxDC : public wxDCBase |
| 45 | { |
| 46 | DECLARE_DYNAMIC_CLASS(wxDC) |
| 47 | |
| 48 | public: |
| 49 | wxDC(); |
| 50 | ~wxDC() { } |
| 51 | |
| 52 | // implement base class pure virtuals |
| 53 | // ---------------------------------- |
| 54 | |
| 55 | virtual wxSize GetPPI() const; |
| 56 | |
| 57 | virtual void SetMapMode(int mode); |
| 58 | virtual void SetUserScale(double x, double y); |
| 59 | virtual void SetLogicalScale(double x, double y); |
| 60 | virtual void SetLogicalOrigin(wxCoord x, wxCoord y); |
| 61 | virtual void SetDeviceOrigin(wxCoord x, wxCoord y); |
| 62 | virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp); |
| 63 | |
| 64 | protected: |
| 65 | virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y); |
| 66 | virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, |
| 67 | bool useMask = FALSE); |
| 68 | |
| 69 | virtual void DoSetClippingRegion(wxCoord x, wxCoord y, |
| 70 | wxCoord width, wxCoord height); |
| 71 | virtual void DoGetSize(int *width, int *height) const; |
| 72 | virtual void DoGetSizeMM(int* width, int* height) const; |
| 73 | |
| 74 | public: |
| 75 | void ComputeScaleAndOrigin(); |
| 76 | |
| 77 | wxCoord XDEV2LOG(wxCoord x) const |
| 78 | { |
| 79 | wxCoord new_x = x - m_deviceOriginX; |
| 80 | if (new_x > 0) |
| 81 | return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX; |
| 82 | else |
| 83 | return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX; |
| 84 | } |
| 85 | wxCoord XDEV2LOGREL(wxCoord x) const |
| 86 | { |
| 87 | if (x > 0) |
| 88 | return (wxCoord)((double)(x) / m_scaleX + 0.5); |
| 89 | else |
| 90 | return (wxCoord)((double)(x) / m_scaleX - 0.5); |
| 91 | } |
| 92 | wxCoord YDEV2LOG(wxCoord y) const |
| 93 | { |
| 94 | wxCoord new_y = y - m_deviceOriginY; |
| 95 | if (new_y > 0) |
| 96 | return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY; |
| 97 | else |
| 98 | return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY; |
| 99 | } |
| 100 | wxCoord YDEV2LOGREL(wxCoord y) const |
| 101 | { |
| 102 | if (y > 0) |
| 103 | return (wxCoord)((double)(y) / m_scaleY + 0.5); |
| 104 | else |
| 105 | return (wxCoord)((double)(y) / m_scaleY - 0.5); |
| 106 | } |
| 107 | wxCoord XLOG2DEV(wxCoord x) const |
| 108 | { |
| 109 | wxCoord new_x = x - m_logicalOriginX; |
| 110 | if (new_x > 0) |
| 111 | return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX; |
| 112 | else |
| 113 | return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX; |
| 114 | } |
| 115 | // Without device translation, for backing pixmap purposes |
| 116 | wxCoord XLOG2DEV_2(wxCoord x) const |
| 117 | { |
| 118 | wxCoord new_x = x - m_logicalOriginX; |
| 119 | if (new_x > 0) |
| 120 | return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX; |
| 121 | else |
| 122 | return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX; |
| 123 | } |
| 124 | wxCoord XLOG2DEVREL(wxCoord x) const |
| 125 | { |
| 126 | if (x > 0) |
| 127 | return (wxCoord)((double)(x) * m_scaleX + 0.5); |
| 128 | else |
| 129 | return (wxCoord)((double)(x) * m_scaleX - 0.5); |
| 130 | } |
| 131 | wxCoord YLOG2DEV(wxCoord y) const |
| 132 | { |
| 133 | wxCoord new_y = y - m_logicalOriginY; |
| 134 | if (new_y > 0) |
| 135 | return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY; |
| 136 | else |
| 137 | return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY; |
| 138 | } |
| 139 | // Without device translation, for backing pixmap purposes |
| 140 | wxCoord YLOG2DEV_2(wxCoord y) const |
| 141 | { |
| 142 | wxCoord new_y = y - m_logicalOriginY; |
| 143 | if (new_y > 0) |
| 144 | return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY; |
| 145 | else |
| 146 | return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY; |
| 147 | } |
| 148 | wxCoord YLOG2DEVREL(wxCoord y) const |
| 149 | { |
| 150 | if (y > 0) |
| 151 | return (wxCoord)((double)(y) * m_scaleY + 0.5); |
| 152 | else |
| 153 | return (wxCoord)((double)(y) * m_scaleY - 0.5); |
| 154 | } |
| 155 | |
| 156 | public: |
| 157 | // not sure what for, but what is a mm on a screen you don't know the size of? |
| 158 | double m_mm_to_pix_x,m_mm_to_pix_y; |
| 159 | |
| 160 | // recompute scale? |
| 161 | bool m_needComputeScaleX, m_needComputeScaleY; |
| 162 | |
| 163 | }; |
| 164 | |
| 165 | #endif |
| 166 | // _WX_DC_H_ |