| | 1 | ///////////////////////////////////////////////////////////////////////////// |
| | 2 | // Name: dc.h |
| | 3 | // Purpose: wxDC class |
| | 4 | // Author: Vaclav Slavik |
| | 5 | // Created: 2001/03/09 |
| | 6 | // RCS-ID: $Id$ |
| | 7 | // Copyright: (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com) |
| | 8 | // Licence: wxWindows licence |
| | 9 | ///////////////////////////////////////////////////////////////////////////// |
| | 10 | |
| | 11 | #ifndef _WX_DC_H_ |
| | 12 | #define _WX_DC_H_ |
| | 13 | |
| | 14 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| | 15 | #pragma interface "dc.h" |
| | 16 | #endif |
| | 17 | |
| | 18 | #include "wx/defs.h" |
| | 19 | #include "wx/region.h" |
| | 20 | |
| | 21 | //----------------------------------------------------------------------------- |
| | 22 | // classes |
| | 23 | //----------------------------------------------------------------------------- |
| | 24 | |
| | 25 | class WXDLLEXPORT wxDC; |
| | 26 | |
| | 27 | //----------------------------------------------------------------------------- |
| | 28 | // constants |
| | 29 | //----------------------------------------------------------------------------- |
| | 30 | |
| | 31 | #define MM_TEXT 0 |
| | 32 | #define MM_ISOTROPIC 1 |
| | 33 | #define MM_ANISOTROPIC 2 |
| | 34 | #define MM_LOMETRIC 3 |
| | 35 | #define MM_HIMETRIC 4 |
| | 36 | #define MM_TWIPS 5 |
| | 37 | #define MM_POINTS 6 |
| | 38 | #define MM_METRIC 7 |
| | 39 | |
| | 40 | //----------------------------------------------------------------------------- |
| | 41 | // wxDC |
| | 42 | //----------------------------------------------------------------------------- |
| | 43 | |
| | 44 | |
| | 45 | // MGL fwd declarations: |
| | 46 | class MGLDevCtx; |
| | 47 | class MGLRegion; |
| | 48 | struct font_t; |
| | 49 | |
| | 50 | class WXDLLEXPORT wxDC : public wxDCBase |
| | 51 | { |
| | 52 | DECLARE_DYNAMIC_CLASS(wxDC) |
| | 53 | |
| | 54 | public: |
| | 55 | wxDC(); |
| | 56 | ~wxDC(); |
| | 57 | |
| | 58 | // implement base class pure virtuals |
| | 59 | // ---------------------------------- |
| | 60 | |
| | 61 | virtual void Clear(); |
| | 62 | |
| | 63 | virtual bool StartDoc(const wxString& message); |
| | 64 | virtual void EndDoc(); |
| | 65 | |
| | 66 | virtual void StartPage(); |
| | 67 | virtual void EndPage(); |
| | 68 | |
| | 69 | virtual void SetFont(const wxFont& font); |
| | 70 | virtual void SetPen(const wxPen& pen); |
| | 71 | virtual void SetBrush(const wxBrush& brush); |
| | 72 | virtual void SetBackground(const wxBrush& brush); |
| | 73 | virtual void SetBackgroundMode(int mode); |
| | 74 | virtual void SetPalette(const wxPalette& palette); |
| | 75 | |
| | 76 | virtual void DestroyClippingRegion(); |
| | 77 | |
| | 78 | virtual wxCoord GetCharHeight() const; |
| | 79 | virtual wxCoord GetCharWidth() const; |
| | 80 | virtual void DoGetTextExtent(const wxString& string, |
| | 81 | wxCoord *x, wxCoord *y, |
| | 82 | wxCoord *descent = NULL, |
| | 83 | wxCoord *externalLeading = NULL, |
| | 84 | wxFont *theFont = NULL) const; |
| | 85 | |
| | 86 | virtual bool CanDrawBitmap() const; |
| | 87 | virtual bool CanGetTextExtent() const; |
| | 88 | virtual int GetDepth() const; |
| | 89 | virtual wxSize GetPPI() const; |
| | 90 | |
| | 91 | virtual void SetMapMode(int mode); |
| | 92 | virtual void SetUserScale(double x, double y); |
| | 93 | virtual void SetLogicalScale(double x, double y); |
| | 94 | virtual void SetLogicalOrigin(wxCoord x, wxCoord y); |
| | 95 | virtual void SetDeviceOrigin(wxCoord x, wxCoord y); |
| | 96 | virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp); |
| | 97 | virtual void SetLogicalFunction(int function); |
| | 98 | |
| | 99 | // implementation from now on |
| | 100 | // -------------------------- |
| | 101 | |
| | 102 | virtual void ComputeScaleAndOrigin(); |
| | 103 | |
| | 104 | wxCoord XDEV2LOG(wxCoord x) const |
| | 105 | { |
| | 106 | wxCoord new_x = x - m_deviceOriginX; |
| | 107 | if (new_x > 0) |
| | 108 | return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX; |
| | 109 | else |
| | 110 | return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX; |
| | 111 | } |
| | 112 | wxCoord XDEV2LOGREL(wxCoord x) const |
| | 113 | { |
| | 114 | if (x > 0) |
| | 115 | return (wxCoord)((double)(x) / m_scaleX + 0.5); |
| | 116 | else |
| | 117 | return (wxCoord)((double)(x) / m_scaleX - 0.5); |
| | 118 | } |
| | 119 | wxCoord YDEV2LOG(wxCoord y) const |
| | 120 | { |
| | 121 | wxCoord new_y = y - m_deviceOriginY; |
| | 122 | if (new_y > 0) |
| | 123 | return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY; |
| | 124 | else |
| | 125 | return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY; |
| | 126 | } |
| | 127 | wxCoord YDEV2LOGREL(wxCoord y) const |
| | 128 | { |
| | 129 | if (y > 0) |
| | 130 | return (wxCoord)((double)(y) / m_scaleY + 0.5); |
| | 131 | else |
| | 132 | return (wxCoord)((double)(y) / m_scaleY - 0.5); |
| | 133 | } |
| | 134 | wxCoord XLOG2DEV(wxCoord x) const |
| | 135 | { |
| | 136 | wxCoord new_x = x - m_logicalOriginX; |
| | 137 | if (new_x > 0) |
| | 138 | return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX; |
| | 139 | else |
| | 140 | return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX; |
| | 141 | } |
| | 142 | wxCoord XLOG2DEVREL(wxCoord x) const |
| | 143 | { |
| | 144 | if (x > 0) |
| | 145 | return (wxCoord)((double)(x) * m_scaleX + 0.5); |
| | 146 | else |
| | 147 | return (wxCoord)((double)(x) * m_scaleX - 0.5); |
| | 148 | } |
| | 149 | wxCoord YLOG2DEV(wxCoord y) const |
| | 150 | { |
| | 151 | wxCoord new_y = y - m_logicalOriginY; |
| | 152 | if (new_y > 0) |
| | 153 | return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY; |
| | 154 | else |
| | 155 | return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY; |
| | 156 | } |
| | 157 | wxCoord YLOG2DEVREL(wxCoord y) const |
| | 158 | { |
| | 159 | if (y > 0) |
| | 160 | return (wxCoord)((double)(y) * m_scaleY + 0.5); |
| | 161 | else |
| | 162 | return (wxCoord)((double)(y) * m_scaleY - 0.5); |
| | 163 | } |
| | 164 | |
| | 165 | MGLDevCtx *GetMGLDC() const { return m_MGLDC; } |
| | 166 | void SetMGLDC(MGLDevCtx *mgldc, bool OwnsMGLDC = FALSE); |
| | 167 | |
| | 168 | protected: |
| | 169 | virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, |
| | 170 | int style = wxFLOOD_SURFACE); |
| | 171 | |
| | 172 | virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const; |
| | 173 | |
| | 174 | virtual void DoDrawPoint(wxCoord x, wxCoord y); |
| | 175 | virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2); |
| | 176 | |
| | 177 | virtual void DoDrawArc(wxCoord x1, wxCoord y1, |
| | 178 | wxCoord x2, wxCoord y2, |
| | 179 | wxCoord xc, wxCoord yc); |
| | 180 | virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, |
| | 181 | double sa, double ea); |
| | 182 | |
| | 183 | virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height); |
| | 184 | virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y, |
| | 185 | wxCoord width, wxCoord height, |
| | 186 | double radius); |
| | 187 | virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height); |
| | 188 | |
| | 189 | virtual void DoCrossHair(wxCoord x, wxCoord y); |
| | 190 | |
| | 191 | virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y); |
| | 192 | virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, |
| | 193 | bool useMask = FALSE); |
| | 194 | |
| | 195 | virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y); |
| | 196 | virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, |
| | 197 | double angle); |
| | 198 | |
| | 199 | virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, |
| | 200 | wxDC *source, wxCoord xsrc, wxCoord ysrc, |
| | 201 | int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1); |
| | 202 | |
| | 203 | // this is gnarly - we can't even call this function DoSetClippingRegion() |
| | 204 | // because of virtual function hiding |
| | 205 | virtual void DoSetClippingRegionAsRegion(const wxRegion& region); |
| | 206 | virtual void DoSetClippingRegion(wxCoord x, wxCoord y, |
| | 207 | wxCoord width, wxCoord height); |
| | 208 | virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y, |
| | 209 | wxCoord *width, wxCoord *height) |
| | 210 | { |
| | 211 | GetClippingBox(x, y, width, height); |
| | 212 | } |
| | 213 | |
| | 214 | virtual void DoGetSize(int *width, int *height) const; |
| | 215 | virtual void DoGetSizeMM(int* width, int* height) const; |
| | 216 | |
| | 217 | virtual void DoDrawLines(int n, wxPoint points[], |
| | 218 | wxCoord xoffset, wxCoord yoffset); |
| | 219 | virtual void DoDrawPolygon(int n, wxPoint points[], |
| | 220 | wxCoord xoffset, wxCoord yoffset, |
| | 221 | int fillStyle = wxODDEVEN_RULE); |
| | 222 | |
| | 223 | // implementation from now on: |
| | 224 | |
| | 225 | protected: |
| | 226 | // setup newly attached MGLDevCtx for wxDC's use |
| | 227 | // (does things like setting RGB blending mode for antialiased texts): |
| | 228 | void InitializeMGLDC(); |
| | 229 | |
| | 230 | // common part of DoDrawText() and DoDrawRotatedText() |
| | 231 | void DrawAnyText(const wxString& text, wxCoord x, wxCoord y); |
| | 232 | |
| | 233 | // MGL uses pens as both wxPens and wxBrushes, so we have to |
| | 234 | // switch them as needed: |
| | 235 | void SelectPen(); |
| | 236 | void SelectBrush(); |
| | 237 | void SelectMGLStipplePen(int style); |
| | 238 | void SelectMGLFatPen(int style, int flag); |
| | 239 | |
| | 240 | // Select m_font into m_MGLDC: |
| | 241 | bool SelectMGLFont(); |
| | 242 | |
| | 243 | // Convert wxWin logical function to MGL rop: |
| | 244 | int LogicalFunctionToMGLRop(int logFunc) const; |
| | 245 | |
| | 246 | // Unified implementation of DrawIcon, DrawBitmap and Blit: |
| | 247 | void DoDrawSubBitmap(const wxBitmap &bmp, |
| | 248 | wxCoord x, wxCoord y, wxCoord w, wxCoord h, |
| | 249 | wxCoord destx, wxCoord desty, int rop, bool useMask); |
| | 250 | |
| | 251 | // MGL DC class we use: |
| | 252 | MGLDevCtx *m_MGLDC; |
| | 253 | bool m_OwnsMGLDC:1; |
| | 254 | |
| | 255 | // helper variables for SelectXXXX(): |
| | 256 | bool m_penSelected; |
| | 257 | bool m_brushSelected; |
| | 258 | bool m_downloadedPatterns[2]; |
| | 259 | |
| | 260 | // MGL does not render lines with width>1 with endings centered |
| | 261 | // at given coords but with top left corner of the pen at them, |
| | 262 | // these offsets are used to correct it. They are computed by |
| | 263 | // SelectPen. |
| | 264 | int m_penOfsX, m_penOfsY; |
| | 265 | |
| | 266 | double m_mm_to_pix_x, m_mm_to_pix_y; |
| | 267 | |
| | 268 | wxPalette m_oldPalette; |
| | 269 | |
| | 270 | wxRegion m_currentClippingRegion; |
| | 271 | wxRegion m_globalClippingRegion; |
| | 272 | |
| | 273 | // wxDC::Blit handles memoryDCs as special cases :( |
| | 274 | bool m_isMemDC; |
| | 275 | |
| | 276 | font_t *m_mglFont; |
| | 277 | }; |
| | 278 | |
| | 279 | #endif |
| | 280 | // _WX_DC_H_ |
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