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Revision 32 - (show annotations) (download)
Tue Sep 7 03:29:01 2010 UTC (9 years, 10 months ago) by william
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branching from upstream revision (http://pcsx2.googlecode.com/svn/trunk
): r3113 to
https://svn.netsolutions.dnsalias.com/websvn/ps2/pcsx2/pcsx2_0.9.7/branch/r3113_0.9.7_beta
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: wx/dc.h
3 // Purpose: wxDC class
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 05/25/99
7 // RCS-ID: $Id: dc.h 55927 2008-09-28 09:12:16Z VS $
8 // Copyright: (c) wxWidgets team
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 #ifndef _WX_DC_H_BASE_
13 #define _WX_DC_H_BASE_
14
15 // ----------------------------------------------------------------------------
16 // headers which we must include here
17 // ----------------------------------------------------------------------------
18
19 #include "wx/object.h" // the base class
20
21 #include "wx/intl.h" // for wxLayoutDirection
22 #include "wx/cursor.h" // we have member variables of these classes
23 #include "wx/font.h" // so we can't do without them
24 #include "wx/colour.h"
25 #include "wx/bitmap.h" // for wxNullBitmap
26 #include "wx/brush.h"
27 #include "wx/pen.h"
28 #include "wx/palette.h"
29 #include "wx/list.h" // we use wxList in inline functions
30 #include "wx/dynarray.h"
31 #include "wx/math.h"
32
33 class WXDLLIMPEXP_FWD_CORE wxDC;
34 class WXDLLIMPEXP_FWD_CORE wxDCBase;
35
36 class WXDLLEXPORT wxDrawObject
37 {
38 public:
39
40 wxDrawObject()
41 : m_isBBoxValid(false)
42 , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
43 { }
44
45 virtual ~wxDrawObject() { }
46
47 virtual void Draw(wxDCBase&) const { }
48
49 virtual void CalcBoundingBox(wxCoord x, wxCoord y)
50 {
51 if ( m_isBBoxValid )
52 {
53 if ( x < m_minX ) m_minX = x;
54 if ( y < m_minY ) m_minY = y;
55 if ( x > m_maxX ) m_maxX = x;
56 if ( y > m_maxY ) m_maxY = y;
57 }
58 else
59 {
60 m_isBBoxValid = true;
61
62 m_minX = x;
63 m_minY = y;
64 m_maxX = x;
65 m_maxY = y;
66 }
67 }
68
69 void ResetBoundingBox()
70 {
71 m_isBBoxValid = false;
72
73 m_minX = m_maxX = m_minY = m_maxY = 0;
74 }
75
76 // Get the final bounding box of the PostScript or Metafile picture.
77
78 wxCoord MinX() const { return m_minX; }
79 wxCoord MaxX() const { return m_maxX; }
80 wxCoord MinY() const { return m_minY; }
81 wxCoord MaxY() const { return m_maxY; }
82
83 //to define the type of object for derived objects
84 virtual int GetType()=0;
85
86 protected:
87 //for boundingbox calculation
88 bool m_isBBoxValid:1;
89 //for boundingbox calculation
90 wxCoord m_minX, m_minY, m_maxX, m_maxY;
91 };
92
93 // ---------------------------------------------------------------------------
94 // global variables
95 // ---------------------------------------------------------------------------
96
97 // ---------------------------------------------------------------------------
98 // wxDC is the device context - object on which any drawing is done
99 // ---------------------------------------------------------------------------
100
101 class WXDLLEXPORT wxDCBase : public wxObject
102 {
103 public:
104 wxDCBase()
105 : m_colour(wxColourDisplay())
106 , m_ok(true)
107 , m_clipping(false)
108 , m_isInteractive(0)
109 , m_isBBoxValid(false)
110 , m_logicalOriginX(0), m_logicalOriginY(0)
111 , m_deviceOriginX(0), m_deviceOriginY(0)
112 , m_logicalScaleX(1.0), m_logicalScaleY(1.0)
113 , m_userScaleX(1.0), m_userScaleY(1.0)
114 , m_scaleX(1.0), m_scaleY(1.0)
115 , m_signX(1), m_signY(1)
116 , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
117 , m_clipX1(0), m_clipY1(0), m_clipX2(0), m_clipY2(0)
118 , m_logicalFunction(wxCOPY)
119 , m_backgroundMode(wxTRANSPARENT)
120 , m_mappingMode(wxMM_TEXT)
121 , m_pen()
122 , m_brush()
123 , m_backgroundBrush(*wxTRANSPARENT_BRUSH)
124 , m_textForegroundColour(*wxBLACK)
125 , m_textBackgroundColour(*wxWHITE)
126 , m_font()
127 #if wxUSE_PALETTE
128 , m_palette()
129 , m_hasCustomPalette(false)
130 #endif // wxUSE_PALETTE
131 {
132 ResetBoundingBox();
133 ResetClipping();
134 }
135
136 virtual ~wxDCBase() { }
137
138 // graphic primitives
139 // ------------------
140
141 virtual void DrawObject(wxDrawObject* drawobject)
142 {
143 drawobject->Draw(*this);
144 CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
145 CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
146 }
147
148 bool FloodFill(wxCoord x, wxCoord y, const wxColour& col,
149 int style = wxFLOOD_SURFACE)
150 { return DoFloodFill(x, y, col, style); }
151 bool FloodFill(const wxPoint& pt, const wxColour& col,
152 int style = wxFLOOD_SURFACE)
153 { return DoFloodFill(pt.x, pt.y, col, style); }
154
155 // fill the area specified by rect with a radial gradient, starting from
156 // initialColour in the centre of the cercle and fading to destColour.
157 void GradientFillConcentric(const wxRect& rect,
158 const wxColour& initialColour,
159 const wxColour& destColour)
160 { GradientFillConcentric(rect, initialColour, destColour,
161 wxPoint(rect.GetWidth() / 2,
162 rect.GetHeight() / 2)); }
163
164 void GradientFillConcentric(const wxRect& rect,
165 const wxColour& initialColour,
166 const wxColour& destColour,
167 const wxPoint& circleCenter)
168 { DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); }
169
170 // fill the area specified by rect with a linear gradient
171 void GradientFillLinear(const wxRect& rect,
172 const wxColour& initialColour,
173 const wxColour& destColour,
174 wxDirection nDirection = wxEAST)
175 { DoGradientFillLinear(rect, initialColour, destColour, nDirection); }
176
177 bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
178 { return DoGetPixel(x, y, col); }
179 bool GetPixel(const wxPoint& pt, wxColour *col) const
180 { return DoGetPixel(pt.x, pt.y, col); }
181
182 void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
183 { DoDrawLine(x1, y1, x2, y2); }
184 void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
185 { DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
186
187 void CrossHair(wxCoord x, wxCoord y)
188 { DoCrossHair(x, y); }
189 void CrossHair(const wxPoint& pt)
190 { DoCrossHair(pt.x, pt.y); }
191
192 void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
193 wxCoord xc, wxCoord yc)
194 { DoDrawArc(x1, y1, x2, y2, xc, yc); }
195 void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
196 { DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
197
198 void DrawCheckMark(wxCoord x, wxCoord y,
199 wxCoord width, wxCoord height)
200 { DoDrawCheckMark(x, y, width, height); }
201 void DrawCheckMark(const wxRect& rect)
202 { DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
203
204 void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
205 double sa, double ea)
206 { DoDrawEllipticArc(x, y, w, h, sa, ea); }
207 void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
208 double sa, double ea)
209 { DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
210
211 void DrawPoint(wxCoord x, wxCoord y)
212 { DoDrawPoint(x, y); }
213 void DrawPoint(const wxPoint& pt)
214 { DoDrawPoint(pt.x, pt.y); }
215
216 void DrawLines(int n, wxPoint points[],
217 wxCoord xoffset = 0, wxCoord yoffset = 0)
218 { DoDrawLines(n, points, xoffset, yoffset); }
219 void DrawLines(const wxList *list,
220 wxCoord xoffset = 0, wxCoord yoffset = 0);
221
222 void DrawPolygon(int n, wxPoint points[],
223 wxCoord xoffset = 0, wxCoord yoffset = 0,
224 int fillStyle = wxODDEVEN_RULE)
225 { DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
226
227 void DrawPolygon(const wxList *list,
228 wxCoord xoffset = 0, wxCoord yoffset = 0,
229 int fillStyle = wxODDEVEN_RULE);
230
231 void DrawPolyPolygon(int n, int count[], wxPoint points[],
232 wxCoord xoffset = 0, wxCoord yoffset = 0,
233 int fillStyle = wxODDEVEN_RULE)
234 { DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); }
235
236 void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
237 { DoDrawRectangle(x, y, width, height); }
238 void DrawRectangle(const wxPoint& pt, const wxSize& sz)
239 { DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
240 void DrawRectangle(const wxRect& rect)
241 { DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
242
243 void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
244 double radius)
245 { DoDrawRoundedRectangle(x, y, width, height, radius); }
246 void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
247 double radius)
248 { DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
249 void DrawRoundedRectangle(const wxRect& r, double radius)
250 { DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
251
252 void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
253 { DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
254 void DrawCircle(const wxPoint& pt, wxCoord radius)
255 { DrawCircle(pt.x, pt.y, radius); }
256
257 void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
258 { DoDrawEllipse(x, y, width, height); }
259 void DrawEllipse(const wxPoint& pt, const wxSize& sz)
260 { DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
261 void DrawEllipse(const wxRect& rect)
262 { DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
263
264 void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
265 { DoDrawIcon(icon, x, y); }
266 void DrawIcon(const wxIcon& icon, const wxPoint& pt)
267 { DoDrawIcon(icon, pt.x, pt.y); }
268
269 void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
270 bool useMask = false)
271 { DoDrawBitmap(bmp, x, y, useMask); }
272 void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
273 bool useMask = false)
274 { DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
275
276 void DrawText(const wxString& text, wxCoord x, wxCoord y)
277 { DoDrawText(text, x, y); }
278 void DrawText(const wxString& text, const wxPoint& pt)
279 { DoDrawText(text, pt.x, pt.y); }
280
281 void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
282 { DoDrawRotatedText(text, x, y, angle); }
283 void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
284 { DoDrawRotatedText(text, pt.x, pt.y, angle); }
285
286 // this version puts both optional bitmap and the text into the given
287 // rectangle and aligns is as specified by alignment parameter; it also
288 // will emphasize the character with the given index if it is != -1 and
289 // return the bounding rectangle if required
290 virtual void DrawLabel(const wxString& text,
291 const wxBitmap& image,
292 const wxRect& rect,
293 int alignment = wxALIGN_LEFT | wxALIGN_TOP,
294 int indexAccel = -1,
295 wxRect *rectBounding = NULL);
296
297 void DrawLabel(const wxString& text, const wxRect& rect,
298 int alignment = wxALIGN_LEFT | wxALIGN_TOP,
299 int indexAccel = -1)
300 { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
301
302 bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
303 wxDC *source, wxCoord xsrc, wxCoord ysrc,
304 int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
305 {
306 return DoBlit(xdest, ydest, width, height,
307 source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
308 }
309 bool Blit(const wxPoint& destPt, const wxSize& sz,
310 wxDC *source, const wxPoint& srcPt,
311 int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition)
312 {
313 return DoBlit(destPt.x, destPt.y, sz.x, sz.y,
314 source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
315 }
316
317 wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const
318 {
319 return DoGetAsBitmap(subrect);
320 }
321
322 #if wxUSE_SPLINES
323 // TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?)
324 void DrawSpline(wxCoord x1, wxCoord y1,
325 wxCoord x2, wxCoord y2,
326 wxCoord x3, wxCoord y3);
327 void DrawSpline(int n, wxPoint points[]);
328
329 void DrawSpline(wxList *points) { DoDrawSpline(points); }
330 #endif // wxUSE_SPLINES
331
332 // Eventually we will have wxUSE_GENERIC_DRAWELLIPSE
333 #ifdef __WXWINCE__
334 //! Generic method to draw ellipses, circles and arcs with current pen and brush.
335 /*! \param x Upper left corner of bounding box.
336 * \param y Upper left corner of bounding box.
337 * \param w Width of bounding box.
338 * \param h Height of bounding box.
339 * \param sa Starting angle of arc
340 * (counterclockwise, start at 3 o'clock, 360 is full circle).
341 * \param ea Ending angle of arc.
342 * \param angle Rotation angle, the Arc will be rotated after
343 * calculating begin and end.
344 */
345 void DrawEllipticArcRot( wxCoord x, wxCoord y,
346 wxCoord width, wxCoord height,
347 double sa = 0, double ea = 0, double angle = 0 )
348 { DoDrawEllipticArcRot( x, y, width, height, sa, ea, angle ); }
349
350 void DrawEllipticArcRot( const wxPoint& pt,
351 const wxSize& sz,
352 double sa = 0, double ea = 0, double angle = 0 )
353 { DoDrawEllipticArcRot( pt.x, pt.y, sz.x, sz.y, sa, ea, angle ); }
354
355 void DrawEllipticArcRot( const wxRect& rect,
356 double sa = 0, double ea = 0, double angle = 0 )
357 { DoDrawEllipticArcRot( rect.x, rect.y, rect.width, rect.height, sa, ea, angle ); }
358
359 virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y,
360 wxCoord w, wxCoord h,
361 double sa = 0, double ea = 0, double angle = 0 );
362
363 //! Rotates points around center.
364 /*! This is a quite straight method, it calculates in pixels
365 * and so it produces rounding errors.
366 * \param points The points inside will be rotated.
367 * \param angle Rotating angle (counterclockwise, start at 3 o'clock, 360 is full circle).
368 * \param center Center of rotation.
369 */
370 void Rotate( wxList* points, double angle, wxPoint center = wxPoint(0,0) );
371
372 // used by DrawEllipticArcRot
373 // Careful: wxList gets filled with points you have to delete later.
374 void CalculateEllipticPoints( wxList* points,
375 wxCoord xStart, wxCoord yStart,
376 wxCoord w, wxCoord h,
377 double sa, double ea );
378 #endif
379
380 // global DC operations
381 // --------------------
382
383 virtual void Clear() = 0;
384
385 virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; }
386 virtual void EndDoc() { }
387
388 virtual void StartPage() { }
389 virtual void EndPage() { }
390
391 #if WXWIN_COMPATIBILITY_2_6
392 wxDEPRECATED( void BeginDrawing() );
393 wxDEPRECATED( void EndDrawing() );
394 #endif // WXWIN_COMPATIBILITY_2_6
395
396
397 // set objects to use for drawing
398 // ------------------------------
399
400 virtual void SetFont(const wxFont& font) = 0;
401 virtual void SetPen(const wxPen& pen) = 0;
402 virtual void SetBrush(const wxBrush& brush) = 0;
403 virtual void SetBackground(const wxBrush& brush) = 0;
404 virtual void SetBackgroundMode(int mode) = 0;
405 #if wxUSE_PALETTE
406 virtual void SetPalette(const wxPalette& palette) = 0;
407 #endif // wxUSE_PALETTE
408
409 // clipping region
410 // ---------------
411
412 void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
413 { DoSetClippingRegion(x, y, width, height); }
414 void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
415 { DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
416 void SetClippingRegion(const wxRect& rect)
417 { DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); }
418 void SetClippingRegion(const wxRegion& region)
419 { DoSetClippingRegionAsRegion(region); }
420
421 virtual void DestroyClippingRegion() { ResetClipping(); }
422
423 void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
424 { DoGetClippingBox(x, y, w, h); }
425 void GetClippingBox(wxRect& rect) const
426 {
427 DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height);
428 }
429
430 // text extent
431 // -----------
432
433 virtual wxCoord GetCharHeight() const = 0;
434 virtual wxCoord GetCharWidth() const = 0;
435
436 // only works for single line strings
437 void GetTextExtent(const wxString& string,
438 wxCoord *x, wxCoord *y,
439 wxCoord *descent = NULL,
440 wxCoord *externalLeading = NULL,
441 wxFont *theFont = NULL) const
442 { DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
443
444 wxSize GetTextExtent(const wxString& string) const
445 {
446 wxCoord w, h;
447 DoGetTextExtent(string, &w, &h);
448 return wxSize(w, h);
449 }
450
451 // works for single as well as multi-line strings
452 virtual void GetMultiLineTextExtent(const wxString& string,
453 wxCoord *width,
454 wxCoord *height,
455 wxCoord *heightLine = NULL,
456 wxFont *font = NULL) const;
457
458 wxSize GetMultiLineTextExtent(const wxString& string) const
459 {
460 wxCoord w, h;
461 GetMultiLineTextExtent(string, &w, &h);
462 return wxSize(w, h);
463 }
464
465 // Measure cumulative width of text after each character
466 bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
467 { return DoGetPartialTextExtents(text, widths); }
468
469 // size and resolution
470 // -------------------
471
472 // in device units
473 void GetSize(int *width, int *height) const
474 { DoGetSize(width, height); }
475 wxSize GetSize() const
476 {
477 int w, h;
478 DoGetSize(&w, &h);
479
480 return wxSize(w, h);
481 }
482
483 // in mm
484 void GetSizeMM(int* width, int* height) const
485 { DoGetSizeMM(width, height); }
486 wxSize GetSizeMM() const
487 {
488 int w, h;
489 DoGetSizeMM(&w, &h);
490
491 return wxSize(w, h);
492 }
493
494 // coordinates conversions
495 // -----------------------
496
497 // This group of functions does actual conversion of the input, as you'd
498 // expect.
499 wxCoord DeviceToLogicalX(wxCoord x) const;
500 wxCoord DeviceToLogicalY(wxCoord y) const;
501 wxCoord DeviceToLogicalXRel(wxCoord x) const;
502 wxCoord DeviceToLogicalYRel(wxCoord y) const;
503 wxCoord LogicalToDeviceX(wxCoord x) const;
504 wxCoord LogicalToDeviceY(wxCoord y) const;
505 wxCoord LogicalToDeviceXRel(wxCoord x) const;
506 wxCoord LogicalToDeviceYRel(wxCoord y) const;
507
508 // query DC capabilities
509 // ---------------------
510
511 virtual bool CanDrawBitmap() const = 0;
512 virtual bool CanGetTextExtent() const = 0;
513
514 // colour depth
515 virtual int GetDepth() const = 0;
516
517 // Resolution in Pixels per inch
518 virtual wxSize GetPPI() const = 0;
519
520 virtual bool Ok() const { return IsOk(); }
521 virtual bool IsOk() const { return m_ok; }
522
523 // accessors and setters
524 // ---------------------
525
526 virtual int GetBackgroundMode() const { return m_backgroundMode; }
527 virtual const wxBrush& GetBackground() const { return m_backgroundBrush; }
528 virtual const wxBrush& GetBrush() const { return m_brush; }
529 virtual const wxFont& GetFont() const { return m_font; }
530 virtual const wxPen& GetPen() const { return m_pen; }
531
532 virtual const wxColour& GetTextForeground() const { return m_textForegroundColour; }
533 virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; }
534 virtual void SetTextForeground(const wxColour& colour)
535 { m_textForegroundColour = colour; }
536 virtual void SetTextBackground(const wxColour& colour)
537 { m_textBackgroundColour = colour; }
538
539 virtual int GetMapMode() const { return m_mappingMode; }
540 virtual void SetMapMode(int mode) = 0;
541
542 virtual void GetUserScale(double *x, double *y) const
543 {
544 if ( x ) *x = m_userScaleX;
545 if ( y ) *y = m_userScaleY;
546 }
547 virtual void SetUserScale(double x, double y) = 0;
548
549 virtual void GetLogicalScale(double *x, double *y)
550 {
551 if ( x ) *x = m_logicalScaleX;
552 if ( y ) *y = m_logicalScaleY;
553 }
554 virtual void SetLogicalScale(double x, double y)
555 {
556 m_logicalScaleX = x;
557 m_logicalScaleY = y;
558 }
559
560 void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
561 { DoGetLogicalOrigin(x, y); }
562 wxPoint GetLogicalOrigin() const
563 { wxCoord x, y; DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
564 virtual void SetLogicalOrigin(wxCoord x, wxCoord y) = 0;
565
566 void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
567 { DoGetDeviceOrigin(x, y); }
568 wxPoint GetDeviceOrigin() const
569 { wxCoord x, y; DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
570 virtual void SetDeviceOrigin(wxCoord x, wxCoord y) = 0;
571
572 virtual void ComputeScaleAndOrigin() {}
573
574 virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) = 0;
575
576 virtual int GetLogicalFunction() const { return m_logicalFunction; }
577 virtual void SetLogicalFunction(int function) = 0;
578
579 #if WXWIN_COMPATIBILITY_2_4
580 virtual void SetOptimization(bool WXUNUSED(opt)) { }
581 virtual bool GetOptimization() { return false; }
582 #endif
583
584 // bounding box
585 // ------------
586
587 virtual void CalcBoundingBox(wxCoord x, wxCoord y)
588 {
589 if ( m_isBBoxValid )
590 {
591 if ( x < m_minX ) m_minX = x;
592 if ( y < m_minY ) m_minY = y;
593 if ( x > m_maxX ) m_maxX = x;
594 if ( y > m_maxY ) m_maxY = y;
595 }
596 else
597 {
598 m_isBBoxValid = true;
599
600 m_minX = x;
601 m_minY = y;
602 m_maxX = x;
603 m_maxY = y;
604 }
605 }
606
607 void ResetBoundingBox()
608 {
609 m_isBBoxValid = false;
610
611 m_minX = m_maxX = m_minY = m_maxY = 0;
612 }
613
614 // Get the final bounding box of the PostScript or Metafile picture.
615 wxCoord MinX() const { return m_minX; }
616 wxCoord MaxX() const { return m_maxX; }
617 wxCoord MinY() const { return m_minY; }
618 wxCoord MaxY() const { return m_maxY; }
619
620 // misc old functions
621 // ------------------
622
623 // for compatibility with the old code when wxCoord was long everywhere
624 void GetTextExtent(const wxString& string,
625 long *x, long *y,
626 long *descent = NULL,
627 long *externalLeading = NULL,
628 wxFont *theFont = NULL) const
629 {
630 wxCoord x2, y2, descent2, externalLeading2;
631 DoGetTextExtent(string, &x2, &y2,
632 &descent2, &externalLeading2,
633 theFont);
634 if ( x )
635 *x = x2;
636 if ( y )
637 *y = y2;
638 if ( descent )
639 *descent = descent2;
640 if ( externalLeading )
641 *externalLeading = externalLeading2;
642 }
643
644 void GetLogicalOrigin(long *x, long *y) const
645 {
646 wxCoord x2, y2;
647 DoGetLogicalOrigin(&x2, &y2);
648 if ( x )
649 *x = x2;
650 if ( y )
651 *y = y2;
652 }
653
654 void GetDeviceOrigin(long *x, long *y) const
655 {
656 wxCoord x2, y2;
657 DoGetDeviceOrigin(&x2, &y2);
658 if ( x )
659 *x = x2;
660 if ( y )
661 *y = y2;
662 }
663 void GetClippingBox(long *x, long *y, long *w, long *h) const
664 {
665 wxCoord xx,yy,ww,hh;
666 DoGetClippingBox(&xx, &yy, &ww, &hh);
667 if (x) *x = xx;
668 if (y) *y = yy;
669 if (w) *w = ww;
670 if (h) *h = hh;
671 }
672
673 // RTL related functions
674 // ---------------------
675
676 // get or change the layout direction (LTR or RTL) for this dc,
677 // wxLayout_Default is returned if layout direction is not supported
678 virtual wxLayoutDirection GetLayoutDirection() const
679 { return wxLayout_Default; }
680 virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir))
681 { }
682
683 protected:
684 // the pure virtual functions which should be implemented by wxDC
685 virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
686 int style = wxFLOOD_SURFACE) = 0;
687
688 virtual void DoGradientFillLinear(const wxRect& rect,
689 const wxColour& initialColour,
690 const wxColour& destColour,
691 wxDirection nDirection = wxEAST);
692
693 virtual void DoGradientFillConcentric(const wxRect& rect,
694 const wxColour& initialColour,
695 const wxColour& destColour,
696 const wxPoint& circleCenter);
697
698 virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0;
699
700 virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0;
701 virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0;
702
703 virtual void DoDrawArc(wxCoord x1, wxCoord y1,
704 wxCoord x2, wxCoord y2,
705 wxCoord xc, wxCoord yc) = 0;
706 virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
707 wxCoord width, wxCoord height);
708 virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
709 double sa, double ea) = 0;
710
711 virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0;
712 virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
713 wxCoord width, wxCoord height,
714 double radius) = 0;
715 virtual void DoDrawEllipse(wxCoord x, wxCoord y,
716 wxCoord width, wxCoord height) = 0;
717
718 virtual void DoCrossHair(wxCoord x, wxCoord y) = 0;
719
720 virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0;
721 virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
722 bool useMask = false) = 0;
723
724 virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0;
725 virtual void DoDrawRotatedText(const wxString& text,
726 wxCoord x, wxCoord y, double angle) = 0;
727
728 virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
729 wxCoord width, wxCoord height,
730 wxDC *source, wxCoord xsrc, wxCoord ysrc,
731 int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) = 0;
732
733 virtual wxBitmap DoGetAsBitmap(const wxRect *WXUNUSED(subrect)) const { return wxNullBitmap; }
734
735 virtual void DoGetSize(int *width, int *height) const = 0;
736 virtual void DoGetSizeMM(int* width, int* height) const = 0;
737
738 virtual void DoDrawLines(int n, wxPoint points[],
739 wxCoord xoffset, wxCoord yoffset) = 0;
740 virtual void DoDrawPolygon(int n, wxPoint points[],
741 wxCoord xoffset, wxCoord yoffset,
742 int fillStyle = wxODDEVEN_RULE) = 0;
743 virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
744 wxCoord xoffset, wxCoord yoffset,
745 int fillStyle);
746
747 virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0;
748 virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
749 wxCoord width, wxCoord height) = 0;
750
751 #if WXWIN_COMPATIBILITY_2_4
752 // this was only for confusing people, use DoGetClippingBox only
753 virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y,
754 wxCoord *w, wxCoord *h)
755 { DoGetClippingBox(x, y, w, h); }
756 #endif
757
758 virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
759 wxCoord *w, wxCoord *h) const
760 {
761 if ( x )
762 *x = m_clipX1;
763 if ( y )
764 *y = m_clipY1;
765 if ( w )
766 *w = m_clipX2 - m_clipX1;
767 if ( h )
768 *h = m_clipY2 - m_clipY1;
769 }
770
771 virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const
772 {
773 if ( x ) *x = m_logicalOriginX;
774 if ( y ) *y = m_logicalOriginY;
775 }
776
777 virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
778 {
779 if ( x ) *x = m_deviceOriginX;
780 if ( y ) *y = m_deviceOriginY;
781 }
782
783 virtual void DoGetTextExtent(const wxString& string,
784 wxCoord *x, wxCoord *y,
785 wxCoord *descent = NULL,
786 wxCoord *externalLeading = NULL,
787 wxFont *theFont = NULL) const = 0;
788
789 virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
790
791 #if wxUSE_SPLINES
792 virtual void DoDrawSpline(wxList *points);
793 #endif
794
795 #if wxABI_VERSION >= 20810
796 // returns adjustment factor for converting wxFont "point size"; in wx
797 // it is point size on screen and needs to be multiplied by this value
798 // for rendering on higher-resolution DCs such as printer ones
799 static float GetFontPointSizeAdjustment(float dpi);
800 #endif
801
802 protected:
803 // unset clipping variables (after clipping region was destroyed)
804 void ResetClipping()
805 {
806 m_clipping = false;
807
808 m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0;
809 }
810
811 // flags
812 bool m_colour:1;
813 bool m_ok:1;
814 bool m_clipping:1;
815 bool m_isInteractive:1;
816 bool m_isBBoxValid:1;
817
818 // coordinate system variables
819
820 // TODO short descriptions of what exactly they are would be nice...
821
822 wxCoord m_logicalOriginX, m_logicalOriginY;
823 wxCoord m_deviceOriginX, m_deviceOriginY;
824
825 double m_logicalScaleX, m_logicalScaleY;
826 double m_userScaleX, m_userScaleY;
827 double m_scaleX, m_scaleY;
828
829 // Used by SetAxisOrientation() to invert the axes
830 int m_signX, m_signY;
831
832 // bounding and clipping boxes
833 wxCoord m_minX, m_minY, m_maxX, m_maxY;
834 wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2;
835
836 int m_logicalFunction;
837 int m_backgroundMode;
838 int m_mappingMode;
839
840 // GDI objects
841 wxPen m_pen;
842 wxBrush m_brush;
843 wxBrush m_backgroundBrush;
844 wxColour m_textForegroundColour;
845 wxColour m_textBackgroundColour;
846 wxFont m_font;
847
848 #if wxUSE_PALETTE
849 wxPalette m_palette;
850 bool m_hasCustomPalette;
851 #endif // wxUSE_PALETTE
852
853 private:
854 DECLARE_NO_COPY_CLASS(wxDCBase)
855 DECLARE_ABSTRACT_CLASS(wxDCBase)
856 };
857
858 // ----------------------------------------------------------------------------
859 // now include the declaration of wxDC class
860 // ----------------------------------------------------------------------------
861
862 #if defined(__WXPALMOS__)
863 #include "wx/palmos/dc.h"
864 #elif defined(__WXMSW__)
865 #include "wx/msw/dc.h"
866 #elif defined(__WXMOTIF__)
867 #include "wx/motif/dc.h"
868 #elif defined(__WXGTK20__)
869 #include "wx/gtk/dc.h"
870 #elif defined(__WXGTK__)
871 #include "wx/gtk1/dc.h"
872 #elif defined(__WXX11__)
873 #include "wx/x11/dc.h"
874 #elif defined(__WXMGL__)
875 #include "wx/mgl/dc.h"
876 #elif defined(__WXDFB__)
877 #include "wx/dfb/dc.h"
878 #elif defined(__WXMAC__)
879 #include "wx/mac/dc.h"
880 #elif defined(__WXCOCOA__)
881 #include "wx/cocoa/dc.h"
882 #elif defined(__WXPM__)
883 #include "wx/os2/dc.h"
884 #endif
885
886 #if wxUSE_GRAPHICS_CONTEXT
887 #include "wx/dcgraph.h"
888 #endif
889
890 // ----------------------------------------------------------------------------
891 // helper class: you can use it to temporarily change the DC text colour and
892 // restore it automatically when the object goes out of scope
893 // ----------------------------------------------------------------------------
894
895 class WXDLLEXPORT wxDCTextColourChanger
896 {
897 public:
898 wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { }
899
900 wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc)
901 {
902 Set(col);
903 }
904
905 ~wxDCTextColourChanger()
906 {
907 if ( m_colFgOld.Ok() )
908 m_dc.SetTextForeground(m_colFgOld);
909 }
910
911 void Set(const wxColour& col)
912 {
913 if ( !m_colFgOld.Ok() )
914 m_colFgOld = m_dc.GetTextForeground();
915 m_dc.SetTextForeground(col);
916 }
917
918 private:
919 wxDC& m_dc;
920
921 wxColour m_colFgOld;
922
923 DECLARE_NO_COPY_CLASS(wxDCTextColourChanger)
924 };
925
926 // ----------------------------------------------------------------------------
927 // helper class: you can use it to temporarily change the DC pen and
928 // restore it automatically when the object goes out of scope
929 // ----------------------------------------------------------------------------
930
931 class WXDLLEXPORT wxDCPenChanger
932 {
933 public:
934 wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen())
935 {
936 m_dc.SetPen(pen);
937 }
938
939 ~wxDCPenChanger()
940 {
941 if ( m_penOld.Ok() )
942 m_dc.SetPen(m_penOld);
943 }
944
945 private:
946 wxDC& m_dc;
947
948 wxPen m_penOld;
949
950 DECLARE_NO_COPY_CLASS(wxDCPenChanger)
951 };
952
953 // ----------------------------------------------------------------------------
954 // helper class: you can use it to temporarily change the DC brush and
955 // restore it automatically when the object goes out of scope
956 // ----------------------------------------------------------------------------
957
958 class WXDLLEXPORT wxDCBrushChanger
959 {
960 public:
961 wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush())
962 {
963 m_dc.SetBrush(brush);
964 }
965
966 ~wxDCBrushChanger()
967 {
968 if ( m_brushOld.Ok() )
969 m_dc.SetBrush(m_brushOld);
970 }
971
972 private:
973 wxDC& m_dc;
974
975 wxBrush m_brushOld;
976
977 DECLARE_NO_COPY_CLASS(wxDCBrushChanger)
978 };
979
980 // ----------------------------------------------------------------------------
981 // another small helper class: sets the clipping region in its ctor and
982 // destroys it in the dtor
983 // ----------------------------------------------------------------------------
984
985 class WXDLLEXPORT wxDCClipper
986 {
987 public:
988 wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc)
989 { dc.SetClippingRegion(r); }
990 wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc)
991 { dc.SetClippingRegion(r.x, r.y, r.width, r.height); }
992 wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc)
993 { dc.SetClippingRegion(x, y, w, h); }
994
995 ~wxDCClipper() { m_dc.DestroyClippingRegion(); }
996
997 private:
998 wxDC& m_dc;
999
1000 DECLARE_NO_COPY_CLASS(wxDCClipper)
1001 };
1002
1003 #endif // _WX_DC_H_BASE_

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