| | 1 | ///////////////////////////////////////////////////////////////////////////// |
| | 2 | // Name: dc.h |
| | 3 | // Purpose: |
| | 4 | // Author: Robert Roebling |
| | 5 | // Id: $Id$ |
| | 6 | // Copyright: (c) 1998 Robert Roebling |
| | 7 | // Licence: wxWindows licence |
| | 8 | ///////////////////////////////////////////////////////////////////////////// |
| | 9 | |
| | 10 | |
| | 11 | #ifndef __GTKDCH__ |
| | 12 | #define __GTKDCH__ |
| | 13 | |
| | 14 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| | 15 | #pragma interface |
| | 16 | #endif |
| | 17 | |
| | 18 | //----------------------------------------------------------------------------- |
| | 19 | // classes |
| | 20 | //----------------------------------------------------------------------------- |
| | 21 | |
| | 22 | class wxDC; |
| | 23 | |
| | 24 | //----------------------------------------------------------------------------- |
| | 25 | // constants |
| | 26 | //----------------------------------------------------------------------------- |
| | 27 | |
| | 28 | #ifndef MM_TEXT |
| | 29 | #define MM_TEXT 0 |
| | 30 | #define MM_ISOTROPIC 1 |
| | 31 | #define MM_ANISOTROPIC 2 |
| | 32 | #define MM_LOMETRIC 3 |
| | 33 | #define MM_HIMETRIC 4 |
| | 34 | #define MM_TWIPS 5 |
| | 35 | #define MM_POINTS 6 |
| | 36 | #define MM_METRIC 7 |
| | 37 | #endif |
| | 38 | |
| | 39 | //----------------------------------------------------------------------------- |
| | 40 | // wxDC |
| | 41 | //----------------------------------------------------------------------------- |
| | 42 | |
| | 43 | class wxDC : public wxDCBase |
| | 44 | { |
| | 45 | public: |
| | 46 | wxDC(); |
| | 47 | ~wxDC() { } |
| | 48 | |
| | 49 | void SetColourMap( const wxPalette& palette ) { SetPalette(palette); }; |
| | 50 | |
| | 51 | // Resolution in pixels per logical inch |
| | 52 | virtual wxSize GetPPI() const; |
| | 53 | |
| | 54 | virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; } |
| | 55 | virtual void EndDoc() { } |
| | 56 | virtual void StartPage() { } |
| | 57 | virtual void EndPage() { } |
| | 58 | |
| | 59 | virtual void SetMapMode( int mode ); |
| | 60 | virtual void SetUserScale( double x, double y ); |
| | 61 | virtual void SetLogicalScale( double x, double y ); |
| | 62 | virtual void SetLogicalOrigin( wxCoord x, wxCoord y ); |
| | 63 | virtual void SetDeviceOrigin( wxCoord x, wxCoord y ); |
| | 64 | |
| | 65 | virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp ); |
| | 66 | |
| | 67 | // implementation |
| | 68 | // -------------- |
| | 69 | |
| | 70 | virtual void ComputeScaleAndOrigin(); |
| | 71 | |
| | 72 | wxCoord XDEV2LOG(wxCoord x) const |
| | 73 | { |
| | 74 | wxCoord new_x = x - m_deviceOriginX; |
| | 75 | if (new_x > 0) |
| | 76 | return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX; |
| | 77 | else |
| | 78 | return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX; |
| | 79 | } |
| | 80 | wxCoord XDEV2LOGREL(wxCoord x) const |
| | 81 | { |
| | 82 | if (x > 0) |
| | 83 | return (wxCoord)((double)(x) / m_scaleX + 0.5); |
| | 84 | else |
| | 85 | return (wxCoord)((double)(x) / m_scaleX - 0.5); |
| | 86 | } |
| | 87 | wxCoord YDEV2LOG(wxCoord y) const |
| | 88 | { |
| | 89 | wxCoord new_y = y - m_deviceOriginY; |
| | 90 | if (new_y > 0) |
| | 91 | return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY; |
| | 92 | else |
| | 93 | return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY; |
| | 94 | } |
| | 95 | wxCoord YDEV2LOGREL(wxCoord y) const |
| | 96 | { |
| | 97 | if (y > 0) |
| | 98 | return (wxCoord)((double)(y) / m_scaleY + 0.5); |
| | 99 | else |
| | 100 | return (wxCoord)((double)(y) / m_scaleY - 0.5); |
| | 101 | } |
| | 102 | wxCoord XLOG2DEV(wxCoord x) const |
| | 103 | { |
| | 104 | wxCoord new_x = x - m_logicalOriginX; |
| | 105 | if (new_x > 0) |
| | 106 | return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX; |
| | 107 | else |
| | 108 | return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX; |
| | 109 | } |
| | 110 | wxCoord XLOG2DEVREL(wxCoord x) const |
| | 111 | { |
| | 112 | if (x > 0) |
| | 113 | return (wxCoord)((double)(x) * m_scaleX + 0.5); |
| | 114 | else |
| | 115 | return (wxCoord)((double)(x) * m_scaleX - 0.5); |
| | 116 | } |
| | 117 | wxCoord YLOG2DEV(wxCoord y) const |
| | 118 | { |
| | 119 | wxCoord new_y = y - m_logicalOriginY; |
| | 120 | if (new_y > 0) |
| | 121 | return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY; |
| | 122 | else |
| | 123 | return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY; |
| | 124 | } |
| | 125 | wxCoord YLOG2DEVREL(wxCoord y) const |
| | 126 | { |
| | 127 | if (y > 0) |
| | 128 | return (wxCoord)((double)(y) * m_scaleY + 0.5); |
| | 129 | else |
| | 130 | return (wxCoord)((double)(y) * m_scaleY - 0.5); |
| | 131 | } |
| | 132 | |
| | 133 | protected: |
| | 134 | // base class pure virtuals implemented here |
| | 135 | virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height); |
| | 136 | virtual void DoGetSizeMM(int* width, int* height) const; |
| | 137 | |
| | 138 | public: |
| | 139 | // GTK-specific member variables |
| | 140 | |
| | 141 | // not sure what for, but what is a mm on a screen you don't know the size |
| | 142 | // of? |
| | 143 | double m_mm_to_pix_x, |
| | 144 | m_mm_to_pix_y; |
| | 145 | |
| | 146 | bool m_needComputeScaleX, |
| | 147 | m_needComputeScaleY; // not yet used |
| | 148 | |
| | 149 | |
| | 150 | private: |
| | 151 | DECLARE_ABSTRACT_CLASS(wxDC) |
| | 152 | }; |
| | 153 | |
| | 154 | // this must be defined when wxDC::Blit() honours the DC origian and needed to |
| | 155 | // allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK |
| | 156 | // 2.3.[23] |
| | 157 | #ifndef wxHAS_WORKING_GTK_DC_BLIT |
| | 158 | #define wxHAS_WORKING_GTK_DC_BLIT |
| | 159 | #endif |
| | 160 | |
| | 161 | #endif // __GTKDCH__ |
projects / wxWidgets.git / blame_incremental