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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: dc.h
3 // Purpose: wxDC class
4 // Author: Stefan Csomor
5 // Modified by:
6 // Created: 1998-01-01
7 // RCS-ID: $Id$
8 // Copyright: (c) Stefan Csomor
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 #ifndef _WX_DC_H_
13 #define _WX_DC_H_
14
15 #include "wx/pen.h"
16 #include "wx/brush.h"
17 #include "wx/icon.h"
18 #include "wx/font.h"
19 #include "wx/gdicmn.h"
20
21 //-----------------------------------------------------------------------------
22 // constants
23 //-----------------------------------------------------------------------------
24
25 #ifndef MM_TEXT
26 #define MM_TEXT 0
27 #define MM_ISOTROPIC 1
28 #define MM_ANISOTROPIC 2
29 #define MM_LOMETRIC 3
30 #define MM_HIMETRIC 4
31 #define MM_TWIPS 5
32 #define MM_POINTS 6
33 #define MM_METRIC 7
34 #endif
35
36
37 class wxMacPortStateHelper;
38
39 #if !wxUSE_GRAPHICS_CONTEXT
40
41 class WXDLLEXPORT wxGraphicPath
42 {
43 public :
44 virtual ~wxGraphicPath() {}
45
46 virtual void MoveToPoint( wxCoord x1, wxCoord y1 ) = 0;
47
48 virtual void AddLineToPoint( wxCoord x1, wxCoord y1 ) = 0;
49
50 virtual void AddQuadCurveToPoint( wxCoord cx1, wxCoord cy1, wxCoord x1, wxCoord y1 ) = 0;
51
52 virtual void AddRectangle( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0;
53
54 virtual void AddCircle( wxCoord x, wxCoord y, wxCoord r ) = 0;
55
56 // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
57 virtual void AddArcToPoint( wxCoord x1, wxCoord y1 , wxCoord x2, wxCoord y2, wxCoord r ) = 0 ;
58
59 virtual void AddArc( wxCoord x, wxCoord y, wxCoord r, double startAngle, double endAngle, bool clockwise ) = 0 ;
60
61 virtual void CloseSubpath() = 0;
62 };
63
64 class WXDLLEXPORT wxGraphicContext
65 {
66 public:
67 virtual ~wxGraphicContext() {}
68
69 virtual wxGraphicPath * CreatePath() = 0;
70
71 virtual void PushState() = 0 ;
72
73 virtual void PopState() = 0 ;
74
75 virtual void Clip( const wxRegion &region ) = 0;
76
77 virtual void SetPen( const wxPen &pen ) = 0;
78
79 virtual void SetBrush( const wxBrush &brush ) = 0;
80
81 virtual void SetFont( const wxFont &font ) = 0 ;
82
83 virtual void SetTextColor( const wxColour &col ) = 0 ;
84
85 virtual void StrokePath( const wxGraphicPath *path ) = 0;
86
87 virtual void DrawPath( const wxGraphicPath *path, int fillStyle = wxWINDING_RULE ) = 0;
88
89 virtual void FillPath( const wxGraphicPath *path, const wxColor &fillColor, int fillStyle = wxWINDING_RULE ) = 0;
90
91 virtual void DrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0 ;
92
93 virtual void DrawIcon( const wxIcon &icon, wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0 ;
94
95 virtual void DrawText( const wxString &str, wxCoord x, wxCoord y, double angle ) = 0 ;
96
97 virtual void GetTextExtent( const wxString &text, wxCoord *width, wxCoord *height,
98 wxCoord *descent, wxCoord *externalLeading ) const = 0 ;
99
100 virtual void GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const = 0 ;
101
102 virtual void Translate( wxCoord dx , wxCoord dy ) = 0 ;
103
104 virtual void Scale( wxCoord xScale , wxCoord yScale ) = 0 ;
105 };
106
107 class WXDLLEXPORT wxDC: public wxDCBase
108 {
109 DECLARE_DYNAMIC_CLASS(wxDC)
110 DECLARE_NO_COPY_CLASS(wxDC)
111
112 public:
113 wxDC();
114 virtual ~wxDC();
115
116 // implement base class pure virtuals
117 // ----------------------------------
118
119 virtual void Clear();
120
121 virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
122 virtual void EndDoc(void) {}
123
124 virtual void StartPage(void) {}
125 virtual void EndPage(void) {}
126
127 virtual void SetFont(const wxFont& font);
128 virtual void SetPen(const wxPen& pen);
129 virtual void SetBrush(const wxBrush& brush);
130 virtual void SetBackground(const wxBrush& brush);
131 virtual void SetBackgroundMode(int mode);
132 virtual void SetPalette(const wxPalette& palette);
133
134 virtual void DestroyClippingRegion();
135
136 virtual wxCoord GetCharHeight() const;
137 virtual wxCoord GetCharWidth() const;
138
139 virtual bool CanDrawBitmap() const;
140 virtual bool CanGetTextExtent() const;
141 virtual int GetDepth() const;
142 virtual wxSize GetPPI() const;
143
144 virtual void SetMapMode(int mode);
145 virtual void SetUserScale(double x, double y);
146
147 virtual void SetLogicalScale(double x, double y);
148 virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
149 virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
150 virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
151 virtual void SetLogicalFunction(int function);
152
153 virtual void SetTextForeground(const wxColour& colour);
154 virtual void SetTextBackground(const wxColour& colour);
155
156 virtual void ComputeScaleAndOrigin();
157
158 public:
159 wxCoord XDEV2LOG(wxCoord x) const
160 {
161 return wxRound((double)(x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
162 }
163 wxCoord XDEV2LOGREL(wxCoord x) const
164 {
165 return wxRound((double)(x) / m_scaleX);
166 }
167 wxCoord YDEV2LOG(wxCoord y) const
168 {
169 return wxRound((double)(y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
170 }
171 wxCoord YDEV2LOGREL(wxCoord y) const
172 {
173 return wxRound((double)(y) / m_scaleY);
174 }
175 wxCoord XLOG2DEV(wxCoord x) const
176 {
177 return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX;
178 }
179 wxCoord XLOG2DEVREL(wxCoord x) const
180 {
181 return wxRound((double)(x) * m_scaleX);
182 }
183 wxCoord YLOG2DEV(wxCoord y) const
184 {
185 return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY;
186 }
187 wxCoord YLOG2DEVREL(wxCoord y) const
188 {
189 return wxRound((double)(y) * m_scaleY);
190 }
191
192 wxCoord XLOG2DEVMAC(wxCoord x) const
193 {
194 return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX + m_macLocalOrigin.x;
195 }
196
197 wxCoord YLOG2DEVMAC(wxCoord y) const
198 {
199 return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY + m_macLocalOrigin.y;
200 }
201
202 #if wxMAC_USE_CORE_GRAPHICS
203 wxGraphicsContext* GetGraphicsContext() { return m_graphicContext; }
204 #else
205 WXHRGN MacGetCurrentClipRgn() { return m_macCurrentClipRgn; }
206 static void MacSetupBackgroundForCurrentPort(const wxBrush& background );
207 #endif
208
209 protected:
210 virtual void DoGetTextExtent(const wxString& string,
211 wxCoord *x, wxCoord *y,
212 wxCoord *descent = NULL,
213 wxCoord *externalLeading = NULL,
214 wxFont *theFont = NULL) const;
215
216 virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
217
218 virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
219 int style = wxFLOOD_SURFACE);
220
221 virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
222
223 virtual void DoDrawPoint(wxCoord x, wxCoord y);
224
225 #if wxMAC_USE_CORE_GRAPHICS && wxUSE_SPLINES
226 virtual void DoDrawSpline(wxList *points);
227 #endif
228
229 virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
230
231 virtual void DoDrawArc(wxCoord x1, wxCoord y1,
232 wxCoord x2, wxCoord y2,
233 wxCoord xc, wxCoord yc);
234
235 virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
236 double sa, double ea);
237
238 virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
239 virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
240 wxCoord width, wxCoord height,
241 double radius);
242 virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
243
244 virtual void DoCrossHair(wxCoord x, wxCoord y);
245
246 virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
247 virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
248 bool useMask = false);
249
250 virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
251 virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
252 double angle);
253
254 virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
255 wxDC *source, wxCoord xsrc, wxCoord ysrc,
256 int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
257
258 virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
259 wxCoord dstWidth, wxCoord dstHeight,
260 wxDC *source,
261 wxCoord xsrc, wxCoord ysrc,
262 wxCoord srcWidth, wxCoord srcHeight,
263 int rop = wxCOPY, bool useMask = false,
264 wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord);
265
266 // this is gnarly - we can't even call this function DoSetClippingRegion()
267 // because of virtual function hiding
268
269 virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
270 virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
271 wxCoord width, wxCoord height);
272
273 virtual void DoGetSizeMM(int *width, int *height) const;
274
275 virtual void DoDrawLines(int n, wxPoint points[],
276 wxCoord xoffset, wxCoord yoffset);
277 virtual void DoDrawPolygon(int n, wxPoint points[],
278 wxCoord xoffset, wxCoord yoffset,
279 int fillStyle = wxODDEVEN_RULE);
280
281 protected:
282 // scaling variables
283 double m_mm_to_pix_x, m_mm_to_pix_y;
284
285 // To be set using SetDeviceOrigin()
286 // by external classes such as wxScrolledWindow
287 long m_externalDeviceOriginX, m_externalDeviceOriginY;
288
289 #if !wxMAC_USE_CORE_GRAPHICS
290 // If un-scrolled is non-zero or d.o. changes with scrolling.
291 // Set using SetInternalDeviceOrigin().
292 long m_internalDeviceOriginX, m_internalDeviceOriginY;
293
294 WXHBITMAP m_macMask;
295 #endif
296
297 // not yet used
298 bool m_needComputeScaleX, m_needComputeScaleY;
299
300 public:
301 // implementation
302 void MacInstallFont() const;
303
304 // in order to preserve the const inheritance of the virtual functions,
305 // we have to use mutable variables starting from CWPro 5
306 wxPoint m_macLocalOrigin;
307 mutable void *m_macATSUIStyle;
308
309 WXHDC m_macPort;
310
311 #if wxMAC_USE_CORE_GRAPHICS
312 wxGraphicsContext *m_graphicContext;
313 #else
314 void MacInstallPen() const;
315 void MacInstallBrush() const;
316
317 void MacSetupPort( wxMacPortStateHelper *ph ) const;
318 void MacCleanupPort( wxMacPortStateHelper *ph ) const;
319
320 mutable wxMacPortStateHelper *m_macCurrentPortStateHelper;
321
322 mutable bool m_macFontInstalled;
323 mutable bool m_macPenInstalled;
324 mutable bool m_macBrushInstalled;
325
326 WXHRGN m_macBoundaryClipRgn;
327 WXHRGN m_macCurrentClipRgn;
328 mutable bool m_macFormerAliasState;
329 mutable short m_macFormerAliasSize;
330 mutable bool m_macAliasWasEnabled;
331 mutable void *m_macForegroundPixMap;
332 mutable void *m_macBackgroundPixMap;
333 #endif
334 };
335
336 #endif
337
338 #endif // _WX_DC_H_