| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/common/graphcmn.cpp |
| 3 | // Purpose: graphics context methods common to all platforms |
| 4 | // Author: Stefan Csomor |
| 5 | // Modified by: |
| 6 | // Created: |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Stefan Csomor |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // For compilers that support precompilation, includes "wx.h". |
| 13 | #include "wx/wxprec.h" |
| 14 | |
| 15 | #if defined(__BORLANDC__) |
| 16 | #pragma hdrstop |
| 17 | #endif |
| 18 | |
| 19 | #if wxUSE_GRAPHICS_CONTEXT |
| 20 | |
| 21 | #include "wx/private/graphics.h" |
| 22 | |
| 23 | #ifndef WX_PRECOMP |
| 24 | #include "wx/icon.h" |
| 25 | #include "wx/bitmap.h" |
| 26 | #include "wx/dcmemory.h" |
| 27 | #include "wx/region.h" |
| 28 | #include "wx/log.h" |
| 29 | #endif |
| 30 | |
| 31 | //----------------------------------------------------------------------------- |
| 32 | // constants |
| 33 | //----------------------------------------------------------------------------- |
| 34 | |
| 35 | static const double RAD2DEG = 180.0 / M_PI; |
| 36 | |
| 37 | //----------------------------------------------------------------------------- |
| 38 | // Local functions |
| 39 | //----------------------------------------------------------------------------- |
| 40 | |
| 41 | static inline double DegToRad(double deg) |
| 42 | { |
| 43 | return (deg * M_PI) / 180.0; |
| 44 | } |
| 45 | |
| 46 | //----------------------------------------------------------------------------- |
| 47 | |
| 48 | //----------------------------------------------------------------------------- |
| 49 | // wxGraphicsObject |
| 50 | //----------------------------------------------------------------------------- |
| 51 | |
| 52 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsObject, wxObject) |
| 53 | |
| 54 | wxGraphicsObjectRefData::wxGraphicsObjectRefData( wxGraphicsRenderer* renderer ) |
| 55 | { |
| 56 | m_renderer = renderer; |
| 57 | } |
| 58 | wxGraphicsObjectRefData::wxGraphicsObjectRefData( const wxGraphicsObjectRefData* data ) |
| 59 | { |
| 60 | m_renderer = data->m_renderer; |
| 61 | } |
| 62 | wxGraphicsRenderer* wxGraphicsObjectRefData::GetRenderer() const |
| 63 | { |
| 64 | return m_renderer ; |
| 65 | } |
| 66 | |
| 67 | wxGraphicsObjectRefData* wxGraphicsObjectRefData::Clone() const |
| 68 | { |
| 69 | return new wxGraphicsObjectRefData(this); |
| 70 | } |
| 71 | |
| 72 | wxGraphicsObject::wxGraphicsObject() |
| 73 | { |
| 74 | } |
| 75 | |
| 76 | wxGraphicsObject::wxGraphicsObject( wxGraphicsRenderer* renderer ) |
| 77 | { |
| 78 | SetRefData( new wxGraphicsObjectRefData(renderer)); |
| 79 | } |
| 80 | |
| 81 | wxGraphicsObject::~wxGraphicsObject() |
| 82 | { |
| 83 | } |
| 84 | |
| 85 | bool wxGraphicsObject::IsNull() const |
| 86 | { |
| 87 | return m_refData == NULL; |
| 88 | } |
| 89 | |
| 90 | wxGraphicsRenderer* wxGraphicsObject::GetRenderer() const |
| 91 | { |
| 92 | return ( IsNull() ? NULL : GetGraphicsData()->GetRenderer() ); |
| 93 | } |
| 94 | |
| 95 | wxGraphicsObjectRefData* wxGraphicsObject::GetGraphicsData() const |
| 96 | { |
| 97 | return (wxGraphicsObjectRefData*) m_refData; |
| 98 | } |
| 99 | |
| 100 | wxObjectRefData* wxGraphicsObject::CreateRefData() const |
| 101 | { |
| 102 | wxLogDebug(wxT("A Null Object cannot be changed")); |
| 103 | return NULL; |
| 104 | } |
| 105 | |
| 106 | wxObjectRefData* wxGraphicsObject::CloneRefData(const wxObjectRefData* data) const |
| 107 | { |
| 108 | const wxGraphicsObjectRefData* ptr = (const wxGraphicsObjectRefData*) data; |
| 109 | return ptr->Clone(); |
| 110 | } |
| 111 | |
| 112 | //----------------------------------------------------------------------------- |
| 113 | // pens etc. |
| 114 | //----------------------------------------------------------------------------- |
| 115 | |
| 116 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPen, wxGraphicsObject) |
| 117 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBrush, wxGraphicsObject) |
| 118 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsFont, wxGraphicsObject) |
| 119 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBitmap, wxGraphicsObject) |
| 120 | |
| 121 | WXDLLIMPEXP_DATA_CORE(wxGraphicsPen) wxNullGraphicsPen; |
| 122 | WXDLLIMPEXP_DATA_CORE(wxGraphicsBrush) wxNullGraphicsBrush; |
| 123 | WXDLLIMPEXP_DATA_CORE(wxGraphicsFont) wxNullGraphicsFont; |
| 124 | WXDLLIMPEXP_DATA_CORE(wxGraphicsBitmap) wxNullGraphicsBitmap; |
| 125 | |
| 126 | //----------------------------------------------------------------------------- |
| 127 | // matrix |
| 128 | //----------------------------------------------------------------------------- |
| 129 | |
| 130 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsMatrix, wxGraphicsObject) |
| 131 | WXDLLIMPEXP_DATA_CORE(wxGraphicsMatrix) wxNullGraphicsMatrix; |
| 132 | |
| 133 | // concatenates the matrix |
| 134 | void wxGraphicsMatrix::Concat( const wxGraphicsMatrix *t ) |
| 135 | { |
| 136 | AllocExclusive(); |
| 137 | GetMatrixData()->Concat(t->GetMatrixData()); |
| 138 | } |
| 139 | |
| 140 | // sets the matrix to the respective values |
| 141 | void wxGraphicsMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d, |
| 142 | wxDouble tx, wxDouble ty) |
| 143 | { |
| 144 | AllocExclusive(); |
| 145 | GetMatrixData()->Set(a,b,c,d,tx,ty); |
| 146 | } |
| 147 | |
| 148 | // gets the component valuess of the matrix |
| 149 | void wxGraphicsMatrix::Get(wxDouble* a, wxDouble* b, wxDouble* c, |
| 150 | wxDouble* d, wxDouble* tx, wxDouble* ty) const |
| 151 | { |
| 152 | GetMatrixData()->Get(a, b, c, d, tx, ty); |
| 153 | } |
| 154 | |
| 155 | // makes this the inverse matrix |
| 156 | void wxGraphicsMatrix::Invert() |
| 157 | { |
| 158 | AllocExclusive(); |
| 159 | GetMatrixData()->Invert(); |
| 160 | } |
| 161 | |
| 162 | // returns true if the elements of the transformation matrix are equal ? |
| 163 | bool wxGraphicsMatrix::IsEqual( const wxGraphicsMatrix* t) const |
| 164 | { |
| 165 | return GetMatrixData()->IsEqual(t->GetMatrixData()); |
| 166 | } |
| 167 | |
| 168 | // return true if this is the identity matrix |
| 169 | bool wxGraphicsMatrix::IsIdentity() const |
| 170 | { |
| 171 | return GetMatrixData()->IsIdentity(); |
| 172 | } |
| 173 | |
| 174 | // add the translation to this matrix |
| 175 | void wxGraphicsMatrix::Translate( wxDouble dx , wxDouble dy ) |
| 176 | { |
| 177 | AllocExclusive(); |
| 178 | GetMatrixData()->Translate(dx,dy); |
| 179 | } |
| 180 | |
| 181 | // add the scale to this matrix |
| 182 | void wxGraphicsMatrix::Scale( wxDouble xScale , wxDouble yScale ) |
| 183 | { |
| 184 | AllocExclusive(); |
| 185 | GetMatrixData()->Scale(xScale,yScale); |
| 186 | } |
| 187 | |
| 188 | // add the rotation to this matrix (radians) |
| 189 | void wxGraphicsMatrix::Rotate( wxDouble angle ) |
| 190 | { |
| 191 | AllocExclusive(); |
| 192 | GetMatrixData()->Rotate(angle); |
| 193 | } |
| 194 | |
| 195 | // |
| 196 | // apply the transforms |
| 197 | // |
| 198 | |
| 199 | // applies that matrix to the point |
| 200 | void wxGraphicsMatrix::TransformPoint( wxDouble *x, wxDouble *y ) const |
| 201 | { |
| 202 | GetMatrixData()->TransformPoint(x,y); |
| 203 | } |
| 204 | |
| 205 | // applies the matrix except for translations |
| 206 | void wxGraphicsMatrix::TransformDistance( wxDouble *dx, wxDouble *dy ) const |
| 207 | { |
| 208 | GetMatrixData()->TransformDistance(dx,dy); |
| 209 | } |
| 210 | |
| 211 | // returns the native representation |
| 212 | void * wxGraphicsMatrix::GetNativeMatrix() const |
| 213 | { |
| 214 | return GetMatrixData()->GetNativeMatrix(); |
| 215 | } |
| 216 | |
| 217 | //----------------------------------------------------------------------------- |
| 218 | // path |
| 219 | //----------------------------------------------------------------------------- |
| 220 | |
| 221 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPath, wxGraphicsObject) |
| 222 | WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath; |
| 223 | |
| 224 | // convenience functions, for using wxPoint2DDouble etc |
| 225 | |
| 226 | wxPoint2DDouble wxGraphicsPath::GetCurrentPoint() const |
| 227 | { |
| 228 | wxDouble x,y; |
| 229 | GetCurrentPoint(&x,&y); |
| 230 | return wxPoint2DDouble(x,y); |
| 231 | } |
| 232 | |
| 233 | void wxGraphicsPath::MoveToPoint( const wxPoint2DDouble& p) |
| 234 | { |
| 235 | MoveToPoint( p.m_x , p.m_y); |
| 236 | } |
| 237 | |
| 238 | void wxGraphicsPath::AddLineToPoint( const wxPoint2DDouble& p) |
| 239 | { |
| 240 | AddLineToPoint( p.m_x , p.m_y); |
| 241 | } |
| 242 | |
| 243 | void wxGraphicsPath::AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e) |
| 244 | { |
| 245 | AddCurveToPoint(c1.m_x, c1.m_y, c2.m_x, c2.m_y, e.m_x, e.m_y); |
| 246 | } |
| 247 | |
| 248 | void wxGraphicsPath::AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise) |
| 249 | { |
| 250 | AddArc(c.m_x, c.m_y, r, startAngle, endAngle, clockwise); |
| 251 | } |
| 252 | |
| 253 | wxRect2DDouble wxGraphicsPath::GetBox() const |
| 254 | { |
| 255 | wxDouble x,y,w,h; |
| 256 | GetBox(&x,&y,&w,&h); |
| 257 | return wxRect2DDouble( x,y,w,h ); |
| 258 | } |
| 259 | |
| 260 | bool wxGraphicsPath::Contains( const wxPoint2DDouble& c, wxPolygonFillMode fillStyle ) const |
| 261 | { |
| 262 | return Contains( c.m_x, c.m_y, fillStyle); |
| 263 | } |
| 264 | |
| 265 | // true redirections |
| 266 | |
| 267 | // begins a new subpath at (x,y) |
| 268 | void wxGraphicsPath::MoveToPoint( wxDouble x, wxDouble y ) |
| 269 | { |
| 270 | AllocExclusive(); |
| 271 | GetPathData()->MoveToPoint(x,y); |
| 272 | } |
| 273 | |
| 274 | // adds a straight line from the current point to (x,y) |
| 275 | void wxGraphicsPath::AddLineToPoint( wxDouble x, wxDouble y ) |
| 276 | { |
| 277 | AllocExclusive(); |
| 278 | GetPathData()->AddLineToPoint(x,y); |
| 279 | } |
| 280 | |
| 281 | // adds a cubic Bezier curve from the current point, using two control points and an end point |
| 282 | void wxGraphicsPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) |
| 283 | { |
| 284 | AllocExclusive(); |
| 285 | GetPathData()->AddCurveToPoint(cx1,cy1,cx2,cy2,x,y); |
| 286 | } |
| 287 | |
| 288 | // adds another path |
| 289 | void wxGraphicsPath::AddPath( const wxGraphicsPath& path ) |
| 290 | { |
| 291 | AllocExclusive(); |
| 292 | GetPathData()->AddPath(path.GetPathData()); |
| 293 | } |
| 294 | |
| 295 | // closes the current sub-path |
| 296 | void wxGraphicsPath::CloseSubpath() |
| 297 | { |
| 298 | AllocExclusive(); |
| 299 | GetPathData()->CloseSubpath(); |
| 300 | } |
| 301 | |
| 302 | // gets the last point of the current path, (0,0) if not yet set |
| 303 | void wxGraphicsPath::GetCurrentPoint( wxDouble* x, wxDouble* y) const |
| 304 | { |
| 305 | GetPathData()->GetCurrentPoint(x,y); |
| 306 | } |
| 307 | |
| 308 | // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle |
| 309 | void wxGraphicsPath::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) |
| 310 | { |
| 311 | AllocExclusive(); |
| 312 | GetPathData()->AddArc(x,y,r,startAngle,endAngle,clockwise); |
| 313 | } |
| 314 | |
| 315 | // |
| 316 | // These are convenience functions which - if not available natively will be assembled |
| 317 | // using the primitives from above |
| 318 | // |
| 319 | |
| 320 | // adds a quadratic Bezier curve from the current point, using a control point and an end point |
| 321 | void wxGraphicsPath::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) |
| 322 | { |
| 323 | AllocExclusive(); |
| 324 | GetPathData()->AddQuadCurveToPoint(cx,cy,x,y); |
| 325 | } |
| 326 | |
| 327 | // appends a rectangle as a new closed subpath |
| 328 | void wxGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) |
| 329 | { |
| 330 | AllocExclusive(); |
| 331 | GetPathData()->AddRectangle(x,y,w,h); |
| 332 | } |
| 333 | |
| 334 | // appends an ellipsis as a new closed subpath fitting the passed rectangle |
| 335 | void wxGraphicsPath::AddCircle( wxDouble x, wxDouble y, wxDouble r ) |
| 336 | { |
| 337 | AllocExclusive(); |
| 338 | GetPathData()->AddCircle(x,y,r); |
| 339 | } |
| 340 | |
| 341 | // appends 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) |
| 342 | void wxGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) |
| 343 | { |
| 344 | GetPathData()->AddArcToPoint(x1,y1,x2,y2,r); |
| 345 | } |
| 346 | |
| 347 | // appends an ellipse |
| 348 | void wxGraphicsPath::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) |
| 349 | { |
| 350 | AllocExclusive(); |
| 351 | GetPathData()->AddEllipse(x,y,w,h); |
| 352 | } |
| 353 | |
| 354 | // appends a rounded rectangle |
| 355 | void wxGraphicsPath::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) |
| 356 | { |
| 357 | AllocExclusive(); |
| 358 | GetPathData()->AddRoundedRectangle(x,y,w,h,radius); |
| 359 | } |
| 360 | |
| 361 | // returns the native path |
| 362 | void * wxGraphicsPath::GetNativePath() const |
| 363 | { |
| 364 | return GetPathData()->GetNativePath(); |
| 365 | } |
| 366 | |
| 367 | // give the native path returned by GetNativePath() back (there might be some deallocations necessary) |
| 368 | void wxGraphicsPath::UnGetNativePath(void *p)const |
| 369 | { |
| 370 | GetPathData()->UnGetNativePath(p); |
| 371 | } |
| 372 | |
| 373 | // transforms each point of this path by the matrix |
| 374 | void wxGraphicsPath::Transform( const wxGraphicsMatrix& matrix ) |
| 375 | { |
| 376 | AllocExclusive(); |
| 377 | GetPathData()->Transform(matrix.GetMatrixData()); |
| 378 | } |
| 379 | |
| 380 | // gets the bounding box enclosing all points (possibly including control points) |
| 381 | void wxGraphicsPath::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const |
| 382 | { |
| 383 | GetPathData()->GetBox(x,y,w,h); |
| 384 | } |
| 385 | |
| 386 | bool wxGraphicsPath::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const |
| 387 | { |
| 388 | return GetPathData()->Contains(x,y,fillStyle); |
| 389 | } |
| 390 | |
| 391 | // |
| 392 | // Emulations, these mus be implemented in the ...Data classes in order to allow for proper overrides |
| 393 | // |
| 394 | |
| 395 | void wxGraphicsPathData::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) |
| 396 | { |
| 397 | // calculate using degree elevation to a cubic bezier |
| 398 | wxPoint2DDouble c1; |
| 399 | wxPoint2DDouble c2; |
| 400 | |
| 401 | wxPoint2DDouble start; |
| 402 | GetCurrentPoint(&start.m_x,&start.m_y); |
| 403 | wxPoint2DDouble end(x,y); |
| 404 | wxPoint2DDouble c(cx,cy); |
| 405 | c1 = wxDouble(1/3.0) * start + wxDouble(2/3.0) * c; |
| 406 | c2 = wxDouble(2/3.0) * c + wxDouble(1/3.0) * end; |
| 407 | AddCurveToPoint(c1.m_x,c1.m_y,c2.m_x,c2.m_y,x,y); |
| 408 | } |
| 409 | |
| 410 | void wxGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) |
| 411 | { |
| 412 | MoveToPoint(x,y); |
| 413 | AddLineToPoint(x,y+h); |
| 414 | AddLineToPoint(x+w,y+h); |
| 415 | AddLineToPoint(x+w,y); |
| 416 | CloseSubpath(); |
| 417 | } |
| 418 | |
| 419 | void wxGraphicsPathData::AddCircle( wxDouble x, wxDouble y, wxDouble r ) |
| 420 | { |
| 421 | MoveToPoint(x+r,y); |
| 422 | AddArc( x,y,r,0,2*M_PI,false); |
| 423 | CloseSubpath(); |
| 424 | } |
| 425 | |
| 426 | void wxGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) |
| 427 | { |
| 428 | if (w <= 0. || h <= 0.) |
| 429 | return; |
| 430 | |
| 431 | wxDouble rw = w/2; |
| 432 | wxDouble rh = h/2; |
| 433 | wxDouble xc = x + rw; |
| 434 | wxDouble yc = y + rh; |
| 435 | wxGraphicsMatrix m = GetRenderer()->CreateMatrix(); |
| 436 | m.Translate(xc,yc); |
| 437 | m.Scale(rw/rh,1.0); |
| 438 | wxGraphicsPath p = GetRenderer()->CreatePath(); |
| 439 | p.AddCircle(0,0,rh); |
| 440 | p.Transform(m); |
| 441 | AddPath(p.GetPathData()); |
| 442 | } |
| 443 | |
| 444 | void wxGraphicsPathData::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) |
| 445 | { |
| 446 | if ( radius == 0 ) |
| 447 | AddRectangle(x,y,w,h); |
| 448 | else |
| 449 | { |
| 450 | MoveToPoint( x + w, y + h / 2); |
| 451 | AddArcToPoint(x + w, y + h, x + w / 2, y + h, radius); |
| 452 | AddArcToPoint(x, y + h, x, y + h / 2, radius); |
| 453 | AddArcToPoint(x, y , x + w / 2, y, radius); |
| 454 | AddArcToPoint(x + w, y, x + w, y + h / 2, radius); |
| 455 | CloseSubpath(); |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | // 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) |
| 460 | void wxGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) |
| 461 | { |
| 462 | wxPoint2DDouble current; |
| 463 | GetCurrentPoint(¤t.m_x,¤t.m_y); |
| 464 | wxPoint2DDouble p1(x1,y1); |
| 465 | wxPoint2DDouble p2(x2,y2); |
| 466 | |
| 467 | wxPoint2DDouble v1 = current - p1; |
| 468 | v1.Normalize(); |
| 469 | wxPoint2DDouble v2 = p2 - p1; |
| 470 | v2.Normalize(); |
| 471 | |
| 472 | wxDouble alpha = v1.GetVectorAngle() - v2.GetVectorAngle(); |
| 473 | |
| 474 | if ( alpha < 0 ) |
| 475 | alpha = 360 + alpha; |
| 476 | // TODO obtuse angles |
| 477 | |
| 478 | alpha = DegToRad(alpha); |
| 479 | |
| 480 | wxDouble dist = r / sin(alpha/2) * cos(alpha/2); |
| 481 | // calculate tangential points |
| 482 | wxPoint2DDouble t1 = dist*v1 + p1; |
| 483 | wxPoint2DDouble t2 = dist*v2 + p1; |
| 484 | |
| 485 | wxPoint2DDouble nv1 = v1; |
| 486 | nv1.SetVectorAngle(v1.GetVectorAngle()-90); |
| 487 | wxPoint2DDouble c = t1 + r*nv1; |
| 488 | |
| 489 | wxDouble a1 = v1.GetVectorAngle()+90; |
| 490 | wxDouble a2 = v2.GetVectorAngle()-90; |
| 491 | |
| 492 | AddLineToPoint(t1.m_x,t1.m_y); |
| 493 | AddArc(c.m_x,c.m_y,r,DegToRad(a1),DegToRad(a2),true); |
| 494 | AddLineToPoint(p2.m_x,p2.m_y); |
| 495 | } |
| 496 | |
| 497 | //----------------------------------------------------------------------------- |
| 498 | // wxGraphicsContext Convenience Methods |
| 499 | //----------------------------------------------------------------------------- |
| 500 | |
| 501 | IMPLEMENT_ABSTRACT_CLASS(wxGraphicsContext, wxObject) |
| 502 | |
| 503 | |
| 504 | wxGraphicsContext::wxGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsObject(renderer) |
| 505 | { |
| 506 | m_logicalFunction = wxCOPY; |
| 507 | } |
| 508 | |
| 509 | wxGraphicsContext::~wxGraphicsContext() |
| 510 | { |
| 511 | } |
| 512 | |
| 513 | bool wxGraphicsContext::StartDoc(const wxString& WXUNUSED(message)) |
| 514 | { |
| 515 | return true; |
| 516 | } |
| 517 | |
| 518 | void wxGraphicsContext::EndDoc() |
| 519 | { |
| 520 | } |
| 521 | |
| 522 | void wxGraphicsContext::StartPage(wxDouble WXUNUSED(width), |
| 523 | wxDouble WXUNUSED(height)) |
| 524 | { |
| 525 | } |
| 526 | |
| 527 | void wxGraphicsContext::EndPage() |
| 528 | { |
| 529 | } |
| 530 | |
| 531 | void wxGraphicsContext::Flush() |
| 532 | { |
| 533 | } |
| 534 | |
| 535 | #if 0 |
| 536 | void wxGraphicsContext::SetAlpha( wxDouble WXUNUSED(alpha) ) |
| 537 | { |
| 538 | } |
| 539 | |
| 540 | wxDouble wxGraphicsContext::GetAlpha() const |
| 541 | { |
| 542 | return 1.0; |
| 543 | } |
| 544 | #endif |
| 545 | |
| 546 | void wxGraphicsContext::GetSize( wxDouble* width, wxDouble* height) |
| 547 | { |
| 548 | *width = 10000.0; |
| 549 | *height = 10000.0; |
| 550 | } |
| 551 | |
| 552 | void wxGraphicsContext::GetDPI( wxDouble* dpiX, wxDouble* dpiY) |
| 553 | { |
| 554 | *dpiX = 72.0; |
| 555 | *dpiY = 72.0; |
| 556 | } |
| 557 | |
| 558 | // sets the pen |
| 559 | void wxGraphicsContext::SetPen( const wxGraphicsPen& pen ) |
| 560 | { |
| 561 | m_pen = pen; |
| 562 | } |
| 563 | |
| 564 | void wxGraphicsContext::SetPen( const wxPen& pen ) |
| 565 | { |
| 566 | if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT ) |
| 567 | SetPen( wxNullGraphicsPen ); |
| 568 | else |
| 569 | SetPen( CreatePen( pen ) ); |
| 570 | } |
| 571 | |
| 572 | // sets the brush for filling |
| 573 | void wxGraphicsContext::SetBrush( const wxGraphicsBrush& brush ) |
| 574 | { |
| 575 | m_brush = brush; |
| 576 | } |
| 577 | |
| 578 | void wxGraphicsContext::SetBrush( const wxBrush& brush ) |
| 579 | { |
| 580 | if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT ) |
| 581 | SetBrush( wxNullGraphicsBrush ); |
| 582 | else |
| 583 | SetBrush( CreateBrush( brush ) ); |
| 584 | } |
| 585 | |
| 586 | // sets the brush for filling |
| 587 | void wxGraphicsContext::SetFont( const wxGraphicsFont& font ) |
| 588 | { |
| 589 | m_font = font; |
| 590 | } |
| 591 | |
| 592 | bool wxGraphicsContext::SetLogicalFunction( wxRasterOperationMode function ) |
| 593 | { |
| 594 | if ( function == wxCOPY ) |
| 595 | { |
| 596 | m_logicalFunction = function; |
| 597 | return true; |
| 598 | } |
| 599 | return false; |
| 600 | } |
| 601 | |
| 602 | void wxGraphicsContext::SetFont( const wxFont& font, const wxColour& colour ) |
| 603 | { |
| 604 | if ( font.Ok() ) |
| 605 | SetFont( CreateFont( font, colour ) ); |
| 606 | else |
| 607 | SetFont( wxNullGraphicsFont ); |
| 608 | } |
| 609 | |
| 610 | void wxGraphicsContext::DrawPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle ) |
| 611 | { |
| 612 | FillPath( path , fillStyle ); |
| 613 | StrokePath( path ); |
| 614 | } |
| 615 | |
| 616 | void |
| 617 | wxGraphicsContext::DoDrawRotatedText(const wxString &str, |
| 618 | wxDouble x, |
| 619 | wxDouble y, |
| 620 | wxDouble angle) |
| 621 | { |
| 622 | Translate(x,y); |
| 623 | Rotate( -angle ); |
| 624 | DrawText( str , 0, 0 ); |
| 625 | Rotate( angle ); |
| 626 | Translate(-x,-y); |
| 627 | } |
| 628 | |
| 629 | void |
| 630 | wxGraphicsContext::DoDrawFilledText(const wxString &str, |
| 631 | wxDouble x, |
| 632 | wxDouble y, |
| 633 | const wxGraphicsBrush& backgroundBrush) |
| 634 | { |
| 635 | wxGraphicsBrush formerBrush = m_brush; |
| 636 | wxGraphicsPen formerPen = m_pen; |
| 637 | wxDouble width; |
| 638 | wxDouble height; |
| 639 | wxDouble descent; |
| 640 | wxDouble externalLeading; |
| 641 | GetTextExtent( str , &width, &height, &descent, &externalLeading ); |
| 642 | SetBrush( backgroundBrush ); |
| 643 | // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape |
| 644 | SetPen( wxNullGraphicsPen ); |
| 645 | |
| 646 | wxGraphicsPath path = CreatePath(); |
| 647 | path.AddRectangle( x , y, width, height ); |
| 648 | FillPath( path ); |
| 649 | |
| 650 | DrawText( str, x ,y); |
| 651 | SetBrush( formerBrush ); |
| 652 | SetPen( formerPen ); |
| 653 | } |
| 654 | |
| 655 | void |
| 656 | wxGraphicsContext::DoDrawRotatedFilledText(const wxString &str, |
| 657 | wxDouble x, wxDouble y, |
| 658 | wxDouble angle, |
| 659 | const wxGraphicsBrush& backgroundBrush) |
| 660 | { |
| 661 | wxGraphicsBrush formerBrush = m_brush; |
| 662 | wxGraphicsPen formerPen = m_pen; |
| 663 | |
| 664 | wxDouble width; |
| 665 | wxDouble height; |
| 666 | wxDouble descent; |
| 667 | wxDouble externalLeading; |
| 668 | GetTextExtent( str , &width, &height, &descent, &externalLeading ); |
| 669 | SetBrush( backgroundBrush ); |
| 670 | // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape |
| 671 | SetPen( wxNullGraphicsPen ); |
| 672 | |
| 673 | wxGraphicsPath path = CreatePath(); |
| 674 | path.MoveToPoint( x , y ); |
| 675 | path.AddLineToPoint( (int) (x + sin(angle) * height) , (int) (y + cos(angle) * height) ); |
| 676 | path.AddLineToPoint( |
| 677 | (int) (x + sin(angle) * height + cos(angle) * width) , |
| 678 | (int) (y + cos(angle) * height - sin(angle) * width)); |
| 679 | path.AddLineToPoint((int) (x + cos(angle) * width) , (int) (y - sin(angle) * width) ); |
| 680 | FillPath( path ); |
| 681 | DrawText( str, x ,y, angle); |
| 682 | SetBrush( formerBrush ); |
| 683 | SetPen( formerPen ); |
| 684 | } |
| 685 | |
| 686 | void wxGraphicsContext::StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2) |
| 687 | { |
| 688 | wxGraphicsPath path = CreatePath(); |
| 689 | path.MoveToPoint(x1, y1); |
| 690 | path.AddLineToPoint( x2, y2 ); |
| 691 | StrokePath( path ); |
| 692 | } |
| 693 | |
| 694 | void wxGraphicsContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h) |
| 695 | { |
| 696 | wxGraphicsPath path = CreatePath(); |
| 697 | path.AddRectangle( x , y , w , h ); |
| 698 | DrawPath( path ); |
| 699 | } |
| 700 | |
| 701 | void wxGraphicsContext::DrawEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) |
| 702 | { |
| 703 | wxGraphicsPath path = CreatePath(); |
| 704 | path.AddEllipse(x,y,w,h); |
| 705 | DrawPath(path); |
| 706 | } |
| 707 | |
| 708 | void wxGraphicsContext::DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) |
| 709 | { |
| 710 | wxGraphicsPath path = CreatePath(); |
| 711 | path.AddRoundedRectangle(x,y,w,h,radius); |
| 712 | DrawPath(path); |
| 713 | } |
| 714 | |
| 715 | void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *points) |
| 716 | { |
| 717 | wxASSERT(n > 1); |
| 718 | wxGraphicsPath path = CreatePath(); |
| 719 | path.MoveToPoint(points[0].m_x, points[0].m_y); |
| 720 | for ( size_t i = 1; i < n; ++i) |
| 721 | path.AddLineToPoint( points[i].m_x, points[i].m_y ); |
| 722 | StrokePath( path ); |
| 723 | } |
| 724 | |
| 725 | void wxGraphicsContext::DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode fillStyle) |
| 726 | { |
| 727 | wxASSERT(n > 1); |
| 728 | wxGraphicsPath path = CreatePath(); |
| 729 | path.MoveToPoint(points[0].m_x, points[0].m_y); |
| 730 | for ( size_t i = 1; i < n; ++i) |
| 731 | path.AddLineToPoint( points[i].m_x, points[i].m_y ); |
| 732 | DrawPath( path , fillStyle); |
| 733 | } |
| 734 | |
| 735 | void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints) |
| 736 | { |
| 737 | wxASSERT(n > 0); |
| 738 | wxGraphicsPath path = CreatePath(); |
| 739 | for ( size_t i = 0; i < n; ++i) |
| 740 | { |
| 741 | path.MoveToPoint(beginPoints[i].m_x, beginPoints[i].m_y); |
| 742 | path.AddLineToPoint( endPoints[i].m_x, endPoints[i].m_y ); |
| 743 | } |
| 744 | StrokePath( path ); |
| 745 | } |
| 746 | |
| 747 | // create a 'native' matrix corresponding to these values |
| 748 | wxGraphicsMatrix wxGraphicsContext::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d, |
| 749 | wxDouble tx, wxDouble ty) const |
| 750 | { |
| 751 | return GetRenderer()->CreateMatrix(a,b,c,d,tx,ty); |
| 752 | } |
| 753 | |
| 754 | wxGraphicsPath wxGraphicsContext::CreatePath() const |
| 755 | { |
| 756 | return GetRenderer()->CreatePath(); |
| 757 | } |
| 758 | |
| 759 | wxGraphicsPen wxGraphicsContext::CreatePen(const wxPen& pen) const |
| 760 | { |
| 761 | return GetRenderer()->CreatePen(pen); |
| 762 | } |
| 763 | |
| 764 | wxGraphicsBrush wxGraphicsContext::CreateBrush(const wxBrush& brush ) const |
| 765 | { |
| 766 | return GetRenderer()->CreateBrush(brush); |
| 767 | } |
| 768 | |
| 769 | // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2 |
| 770 | wxGraphicsBrush wxGraphicsContext::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, |
| 771 | const wxColour&c1, const wxColour&c2) const |
| 772 | { |
| 773 | return GetRenderer()->CreateLinearGradientBrush(x1,y1,x2,y2,c1,c2); |
| 774 | } |
| 775 | |
| 776 | // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc) |
| 777 | // with radius r and color cColor |
| 778 | wxGraphicsBrush wxGraphicsContext::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius, |
| 779 | const wxColour &oColor, const wxColour &cColor) const |
| 780 | { |
| 781 | return GetRenderer()->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor); |
| 782 | } |
| 783 | |
| 784 | // sets the font |
| 785 | wxGraphicsFont wxGraphicsContext::CreateFont( const wxFont &font , const wxColour &col ) const |
| 786 | { |
| 787 | return GetRenderer()->CreateFont(font,col); |
| 788 | } |
| 789 | |
| 790 | wxGraphicsBitmap wxGraphicsContext::CreateBitmap( const wxBitmap& bmp ) const |
| 791 | { |
| 792 | #ifndef __WXGTK20__ |
| 793 | return GetRenderer()->CreateBitmap(bmp); |
| 794 | #else |
| 795 | return wxNullGraphicsBitmap; |
| 796 | #endif |
| 797 | } |
| 798 | |
| 799 | wxGraphicsBitmap wxGraphicsContext::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) const |
| 800 | { |
| 801 | #ifndef __WXGTK20__ |
| 802 | return GetRenderer()->CreateSubBitmap(bmp,x,y,w,h); |
| 803 | #else |
| 804 | return wxNullGraphicsBitmap; |
| 805 | #endif |
| 806 | } |
| 807 | |
| 808 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC& dc) |
| 809 | { |
| 810 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); |
| 811 | } |
| 812 | |
| 813 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxMemoryDC& dc) |
| 814 | { |
| 815 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); |
| 816 | } |
| 817 | |
| 818 | #if wxUSE_PRINTING_ARCHITECTURE |
| 819 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxPrinterDC& dc) |
| 820 | { |
| 821 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); |
| 822 | } |
| 823 | #endif |
| 824 | |
| 825 | wxGraphicsContext* wxGraphicsContext::CreateFromNative( void * context ) |
| 826 | { |
| 827 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeContext(context); |
| 828 | } |
| 829 | |
| 830 | wxGraphicsContext* wxGraphicsContext::CreateFromNativeWindow( void * window ) |
| 831 | { |
| 832 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeWindow(window); |
| 833 | } |
| 834 | |
| 835 | wxGraphicsContext* wxGraphicsContext::Create( wxWindow* window ) |
| 836 | { |
| 837 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(window); |
| 838 | } |
| 839 | |
| 840 | wxGraphicsContext* wxGraphicsContext::Create() |
| 841 | { |
| 842 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateMeasuringContext(); |
| 843 | } |
| 844 | |
| 845 | //----------------------------------------------------------------------------- |
| 846 | // wxGraphicsRenderer |
| 847 | //----------------------------------------------------------------------------- |
| 848 | |
| 849 | IMPLEMENT_ABSTRACT_CLASS(wxGraphicsRenderer, wxObject) |
| 850 | |
| 851 | #endif // wxUSE_GRAPHICS_CONTEXT |