| | 1 | ///////////////////////////////////////////////////////////////////////////// |
| | 2 | // Name: wx/gtk/dc.h |
| | 3 | // Purpose: |
| | 4 | // Author: Robert Roebling |
| | 5 | // Id: $Id$ |
| | 6 | // Copyright: (c) 1998 Robert Roebling |
| | 7 | // Licence: wxWindows licence |
| | 8 | ///////////////////////////////////////////////////////////////////////////// |
| | 9 | |
| | 10 | #ifndef __GTKDCH__ |
| | 11 | #define __GTKDCH__ |
| | 12 | |
| | 13 | //----------------------------------------------------------------------------- |
| | 14 | // constants |
| | 15 | //----------------------------------------------------------------------------- |
| | 16 | |
| | 17 | #ifndef MM_TEXT |
| | 18 | #define MM_TEXT 0 |
| | 19 | #define MM_ISOTROPIC 1 |
| | 20 | #define MM_ANISOTROPIC 2 |
| | 21 | #define MM_LOMETRIC 3 |
| | 22 | #define MM_HIMETRIC 4 |
| | 23 | #define MM_TWIPS 5 |
| | 24 | #define MM_POINTS 6 |
| | 25 | #define MM_METRIC 7 |
| | 26 | #endif |
| | 27 | |
| | 28 | //----------------------------------------------------------------------------- |
| | 29 | // coordinates transformations |
| | 30 | //----------------------------------------------------------------------------- |
| | 31 | |
| | 32 | inline wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const |
| | 33 | { |
| | 34 | return wxRound((x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX; |
| | 35 | } |
| | 36 | inline wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const |
| | 37 | { |
| | 38 | return wxRound((y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY; |
| | 39 | } |
| | 40 | inline wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const |
| | 41 | { |
| | 42 | return wxRound(x / m_scaleX); |
| | 43 | } |
| | 44 | inline wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const |
| | 45 | { |
| | 46 | return wxRound(y / m_scaleY); |
| | 47 | } |
| | 48 | inline wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const |
| | 49 | { |
| | 50 | return wxRound((x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX; |
| | 51 | } |
| | 52 | inline wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const |
| | 53 | { |
| | 54 | return wxRound((y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY; |
| | 55 | } |
| | 56 | inline wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const |
| | 57 | { |
| | 58 | return wxRound(x * m_scaleX); |
| | 59 | } |
| | 60 | inline wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const |
| | 61 | { |
| | 62 | return wxRound(y * m_scaleY); |
| | 63 | } |
| | 64 | |
| | 65 | //----------------------------------------------------------------------------- |
| | 66 | // wxDC |
| | 67 | //----------------------------------------------------------------------------- |
| | 68 | |
| | 69 | class WXDLLIMPEXP_CORE wxDC : public wxDCBase |
| | 70 | { |
| | 71 | public: |
| | 72 | wxDC(); |
| | 73 | virtual ~wxDC() { } |
| | 74 | |
| | 75 | #if wxUSE_PALETTE |
| | 76 | void SetColourMap( const wxPalette& palette ) { SetPalette(palette); }; |
| | 77 | #endif // wxUSE_PALETTE |
| | 78 | |
| | 79 | // Resolution in pixels per logical inch |
| | 80 | virtual wxSize GetPPI() const; |
| | 81 | |
| | 82 | virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; } |
| | 83 | virtual void EndDoc() { } |
| | 84 | virtual void StartPage() { } |
| | 85 | virtual void EndPage() { } |
| | 86 | |
| | 87 | virtual void SetMapMode( int mode ); |
| | 88 | virtual void SetUserScale( double x, double y ); |
| | 89 | virtual void SetLogicalScale( double x, double y ); |
| | 90 | virtual void SetLogicalOrigin( wxCoord x, wxCoord y ); |
| | 91 | virtual void SetDeviceOrigin( wxCoord x, wxCoord y ); |
| | 92 | |
| | 93 | virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp ); |
| | 94 | |
| | 95 | virtual void ComputeScaleAndOrigin(); |
| | 96 | |
| | 97 | virtual GdkWindow* GetGDKWindow() const { return NULL; } |
| | 98 | virtual wxBitmap GetSelectedBitmap() const { return wxNullBitmap; } |
| | 99 | |
| | 100 | protected: |
| | 101 | // implementation |
| | 102 | // -------------- |
| | 103 | |
| | 104 | wxCoord XDEV2LOG(wxCoord x) const |
| | 105 | { |
| | 106 | return DeviceToLogicalX(x); |
| | 107 | } |
| | 108 | wxCoord XDEV2LOGREL(wxCoord x) const |
| | 109 | { |
| | 110 | return DeviceToLogicalXRel(x); |
| | 111 | } |
| | 112 | wxCoord YDEV2LOG(wxCoord y) const |
| | 113 | { |
| | 114 | return DeviceToLogicalY(y); |
| | 115 | } |
| | 116 | wxCoord YDEV2LOGREL(wxCoord y) const |
| | 117 | { |
| | 118 | return DeviceToLogicalYRel(y); |
| | 119 | } |
| | 120 | wxCoord XLOG2DEV(wxCoord x) const |
| | 121 | { |
| | 122 | return LogicalToDeviceX(x); |
| | 123 | } |
| | 124 | wxCoord XLOG2DEVREL(wxCoord x) const |
| | 125 | { |
| | 126 | return LogicalToDeviceXRel(x); |
| | 127 | } |
| | 128 | wxCoord YLOG2DEV(wxCoord y) const |
| | 129 | { |
| | 130 | return LogicalToDeviceY(y); |
| | 131 | } |
| | 132 | wxCoord YLOG2DEVREL(wxCoord y) const |
| | 133 | { |
| | 134 | return LogicalToDeviceYRel(y); |
| | 135 | } |
| | 136 | |
| | 137 | // base class pure virtuals implemented here |
| | 138 | virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height); |
| | 139 | virtual void DoGetSizeMM(int* width, int* height) const; |
| | 140 | |
| | 141 | public: |
| | 142 | // GTK-specific member variables |
| | 143 | |
| | 144 | // not sure what for, but what is a mm on a screen you don't know the size |
| | 145 | // of? |
| | 146 | double m_mm_to_pix_x, |
| | 147 | m_mm_to_pix_y; |
| | 148 | |
| | 149 | bool m_needComputeScaleX, |
| | 150 | m_needComputeScaleY; // not yet used |
| | 151 | |
| | 152 | |
| | 153 | private: |
| | 154 | DECLARE_ABSTRACT_CLASS(wxDC) |
| | 155 | }; |
| | 156 | |
| | 157 | // this must be defined when wxDC::Blit() honours the DC origian and needed to |
| | 158 | // allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK |
| | 159 | // 2.3.[23] |
| | 160 | #ifndef wxHAS_WORKING_GTK_DC_BLIT |
| | 161 | #define wxHAS_WORKING_GTK_DC_BLIT |
| | 162 | #endif |
| | 163 | |
| | 164 | #endif // __GTKDCH__ |
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