| 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/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 | #include "wx/private/graphics.h" |
| 32 | |
| 33 | //----------------------------------------------------------------------------- |
| 34 | // Local functions |
| 35 | //----------------------------------------------------------------------------- |
| 36 | |
| 37 | static inline double DegToRad(double deg) |
| 38 | { |
| 39 | return (deg * M_PI) / 180.0; |
| 40 | } |
| 41 | |
| 42 | //----------------------------------------------------------------------------- |
| 43 | |
| 44 | //----------------------------------------------------------------------------- |
| 45 | // wxGraphicsObject |
| 46 | //----------------------------------------------------------------------------- |
| 47 | |
| 48 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsObject, wxObject) |
| 49 | |
| 50 | wxGraphicsObjectRefData::wxGraphicsObjectRefData( wxGraphicsRenderer* renderer ) |
| 51 | { |
| 52 | m_renderer = renderer; |
| 53 | } |
| 54 | wxGraphicsObjectRefData::wxGraphicsObjectRefData( const wxGraphicsObjectRefData* data ) |
| 55 | { |
| 56 | m_renderer = data->m_renderer; |
| 57 | } |
| 58 | wxGraphicsRenderer* wxGraphicsObjectRefData::GetRenderer() const |
| 59 | { |
| 60 | return m_renderer ; |
| 61 | } |
| 62 | |
| 63 | wxGraphicsObjectRefData* wxGraphicsObjectRefData::Clone() const |
| 64 | { |
| 65 | return new wxGraphicsObjectRefData(this); |
| 66 | } |
| 67 | |
| 68 | wxGraphicsObject::wxGraphicsObject() |
| 69 | { |
| 70 | } |
| 71 | |
| 72 | wxGraphicsObject::wxGraphicsObject( wxGraphicsRenderer* renderer ) |
| 73 | { |
| 74 | SetRefData( new wxGraphicsObjectRefData(renderer)); |
| 75 | } |
| 76 | |
| 77 | wxGraphicsObject::~wxGraphicsObject() |
| 78 | { |
| 79 | } |
| 80 | |
| 81 | bool wxGraphicsObject::IsNull() const |
| 82 | { |
| 83 | return m_refData == NULL; |
| 84 | } |
| 85 | |
| 86 | wxGraphicsRenderer* wxGraphicsObject::GetRenderer() const |
| 87 | { |
| 88 | return ( IsNull() ? NULL : GetGraphicsData()->GetRenderer() ); |
| 89 | } |
| 90 | |
| 91 | wxGraphicsObjectRefData* wxGraphicsObject::GetGraphicsData() const |
| 92 | { |
| 93 | return (wxGraphicsObjectRefData*) m_refData; |
| 94 | } |
| 95 | |
| 96 | wxObjectRefData* wxGraphicsObject::CreateRefData() const |
| 97 | { |
| 98 | wxLogDebug(wxT("A Null Object cannot be changed")); |
| 99 | return NULL; |
| 100 | } |
| 101 | |
| 102 | wxObjectRefData* wxGraphicsObject::CloneRefData(const wxObjectRefData* data) const |
| 103 | { |
| 104 | const wxGraphicsObjectRefData* ptr = (const wxGraphicsObjectRefData*) data; |
| 105 | return ptr->Clone(); |
| 106 | } |
| 107 | |
| 108 | //----------------------------------------------------------------------------- |
| 109 | // pens etc. |
| 110 | //----------------------------------------------------------------------------- |
| 111 | |
| 112 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPen, wxGraphicsObject) |
| 113 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBrush, wxGraphicsObject) |
| 114 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsFont, wxGraphicsObject) |
| 115 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBitmap, wxGraphicsObject) |
| 116 | |
| 117 | WXDLLIMPEXP_DATA_CORE(wxGraphicsPen) wxNullGraphicsPen; |
| 118 | WXDLLIMPEXP_DATA_CORE(wxGraphicsBrush) wxNullGraphicsBrush; |
| 119 | WXDLLIMPEXP_DATA_CORE(wxGraphicsFont) wxNullGraphicsFont; |
| 120 | WXDLLIMPEXP_DATA_CORE(wxGraphicsBitmap) wxNullGraphicsBitmap; |
| 121 | |
| 122 | //----------------------------------------------------------------------------- |
| 123 | // matrix |
| 124 | //----------------------------------------------------------------------------- |
| 125 | |
| 126 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsMatrix, wxGraphicsObject) |
| 127 | WXDLLIMPEXP_DATA_CORE(wxGraphicsMatrix) wxNullGraphicsMatrix; |
| 128 | |
| 129 | // concatenates the matrix |
| 130 | void wxGraphicsMatrix::Concat( const wxGraphicsMatrix *t ) |
| 131 | { |
| 132 | AllocExclusive(); |
| 133 | GetMatrixData()->Concat(t->GetMatrixData()); |
| 134 | } |
| 135 | |
| 136 | // sets the matrix to the respective values |
| 137 | void wxGraphicsMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d, |
| 138 | wxDouble tx, wxDouble ty) |
| 139 | { |
| 140 | AllocExclusive(); |
| 141 | GetMatrixData()->Set(a,b,c,d,tx,ty); |
| 142 | } |
| 143 | |
| 144 | // gets the component valuess of the matrix |
| 145 | void wxGraphicsMatrix::Get(wxDouble* a, wxDouble* b, wxDouble* c, |
| 146 | wxDouble* d, wxDouble* tx, wxDouble* ty) const |
| 147 | { |
| 148 | GetMatrixData()->Get(a, b, c, d, tx, ty); |
| 149 | } |
| 150 | |
| 151 | // makes this the inverse matrix |
| 152 | void wxGraphicsMatrix::Invert() |
| 153 | { |
| 154 | AllocExclusive(); |
| 155 | GetMatrixData()->Invert(); |
| 156 | } |
| 157 | |
| 158 | // returns true if the elements of the transformation matrix are equal ? |
| 159 | bool wxGraphicsMatrix::IsEqual( const wxGraphicsMatrix* t) const |
| 160 | { |
| 161 | return GetMatrixData()->IsEqual(t->GetMatrixData()); |
| 162 | } |
| 163 | |
| 164 | // return true if this is the identity matrix |
| 165 | bool wxGraphicsMatrix::IsIdentity() const |
| 166 | { |
| 167 | return GetMatrixData()->IsIdentity(); |
| 168 | } |
| 169 | |
| 170 | // add the translation to this matrix |
| 171 | void wxGraphicsMatrix::Translate( wxDouble dx , wxDouble dy ) |
| 172 | { |
| 173 | AllocExclusive(); |
| 174 | GetMatrixData()->Translate(dx,dy); |
| 175 | } |
| 176 | |
| 177 | // add the scale to this matrix |
| 178 | void wxGraphicsMatrix::Scale( wxDouble xScale , wxDouble yScale ) |
| 179 | { |
| 180 | AllocExclusive(); |
| 181 | GetMatrixData()->Scale(xScale,yScale); |
| 182 | } |
| 183 | |
| 184 | // add the rotation to this matrix (radians) |
| 185 | void wxGraphicsMatrix::Rotate( wxDouble angle ) |
| 186 | { |
| 187 | AllocExclusive(); |
| 188 | GetMatrixData()->Rotate(angle); |
| 189 | } |
| 190 | |
| 191 | // |
| 192 | // apply the transforms |
| 193 | // |
| 194 | |
| 195 | // applies that matrix to the point |
| 196 | void wxGraphicsMatrix::TransformPoint( wxDouble *x, wxDouble *y ) const |
| 197 | { |
| 198 | GetMatrixData()->TransformPoint(x,y); |
| 199 | } |
| 200 | |
| 201 | // applies the matrix except for translations |
| 202 | void wxGraphicsMatrix::TransformDistance( wxDouble *dx, wxDouble *dy ) const |
| 203 | { |
| 204 | GetMatrixData()->TransformDistance(dx,dy); |
| 205 | } |
| 206 | |
| 207 | // returns the native representation |
| 208 | void * wxGraphicsMatrix::GetNativeMatrix() const |
| 209 | { |
| 210 | return GetMatrixData()->GetNativeMatrix(); |
| 211 | } |
| 212 | |
| 213 | //----------------------------------------------------------------------------- |
| 214 | // path |
| 215 | //----------------------------------------------------------------------------- |
| 216 | |
| 217 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPath, wxGraphicsObject) |
| 218 | WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath; |
| 219 | |
| 220 | // convenience functions, for using wxPoint2DDouble etc |
| 221 | |
| 222 | wxPoint2DDouble wxGraphicsPath::GetCurrentPoint() const |
| 223 | { |
| 224 | wxDouble x,y; |
| 225 | GetCurrentPoint(&x,&y); |
| 226 | return wxPoint2DDouble(x,y); |
| 227 | } |
| 228 | |
| 229 | void wxGraphicsPath::MoveToPoint( const wxPoint2DDouble& p) |
| 230 | { |
| 231 | MoveToPoint( p.m_x , p.m_y); |
| 232 | } |
| 233 | |
| 234 | void wxGraphicsPath::AddLineToPoint( const wxPoint2DDouble& p) |
| 235 | { |
| 236 | AddLineToPoint( p.m_x , p.m_y); |
| 237 | } |
| 238 | |
| 239 | void wxGraphicsPath::AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e) |
| 240 | { |
| 241 | AddCurveToPoint(c1.m_x, c1.m_y, c2.m_x, c2.m_y, e.m_x, e.m_y); |
| 242 | } |
| 243 | |
| 244 | void wxGraphicsPath::AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise) |
| 245 | { |
| 246 | AddArc(c.m_x, c.m_y, r, startAngle, endAngle, clockwise); |
| 247 | } |
| 248 | |
| 249 | wxRect2DDouble wxGraphicsPath::GetBox() const |
| 250 | { |
| 251 | wxDouble x,y,w,h; |
| 252 | GetBox(&x,&y,&w,&h); |
| 253 | return wxRect2DDouble( x,y,w,h ); |
| 254 | } |
| 255 | |
| 256 | bool wxGraphicsPath::Contains( const wxPoint2DDouble& c, wxPolygonFillMode fillStyle ) const |
| 257 | { |
| 258 | return Contains( c.m_x, c.m_y, fillStyle); |
| 259 | } |
| 260 | |
| 261 | // true redirections |
| 262 | |
| 263 | // begins a new subpath at (x,y) |
| 264 | void wxGraphicsPath::MoveToPoint( wxDouble x, wxDouble y ) |
| 265 | { |
| 266 | AllocExclusive(); |
| 267 | GetPathData()->MoveToPoint(x,y); |
| 268 | } |
| 269 | |
| 270 | // adds a straight line from the current point to (x,y) |
| 271 | void wxGraphicsPath::AddLineToPoint( wxDouble x, wxDouble y ) |
| 272 | { |
| 273 | AllocExclusive(); |
| 274 | GetPathData()->AddLineToPoint(x,y); |
| 275 | } |
| 276 | |
| 277 | // adds a cubic Bezier curve from the current point, using two control points and an end point |
| 278 | void wxGraphicsPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) |
| 279 | { |
| 280 | AllocExclusive(); |
| 281 | GetPathData()->AddCurveToPoint(cx1,cy1,cx2,cy2,x,y); |
| 282 | } |
| 283 | |
| 284 | // adds another path |
| 285 | void wxGraphicsPath::AddPath( const wxGraphicsPath& path ) |
| 286 | { |
| 287 | AllocExclusive(); |
| 288 | GetPathData()->AddPath(path.GetPathData()); |
| 289 | } |
| 290 | |
| 291 | // closes the current sub-path |
| 292 | void wxGraphicsPath::CloseSubpath() |
| 293 | { |
| 294 | AllocExclusive(); |
| 295 | GetPathData()->CloseSubpath(); |
| 296 | } |
| 297 | |
| 298 | // gets the last point of the current path, (0,0) if not yet set |
| 299 | void wxGraphicsPath::GetCurrentPoint( wxDouble* x, wxDouble* y) const |
| 300 | { |
| 301 | GetPathData()->GetCurrentPoint(x,y); |
| 302 | } |
| 303 | |
| 304 | // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle |
| 305 | void wxGraphicsPath::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) |
| 306 | { |
| 307 | AllocExclusive(); |
| 308 | GetPathData()->AddArc(x,y,r,startAngle,endAngle,clockwise); |
| 309 | } |
| 310 | |
| 311 | // |
| 312 | // These are convenience functions which - if not available natively will be assembled |
| 313 | // using the primitives from above |
| 314 | // |
| 315 | |
| 316 | // adds a quadratic Bezier curve from the current point, using a control point and an end point |
| 317 | void wxGraphicsPath::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) |
| 318 | { |
| 319 | AllocExclusive(); |
| 320 | GetPathData()->AddQuadCurveToPoint(cx,cy,x,y); |
| 321 | } |
| 322 | |
| 323 | // appends a rectangle as a new closed subpath |
| 324 | void wxGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) |
| 325 | { |
| 326 | AllocExclusive(); |
| 327 | GetPathData()->AddRectangle(x,y,w,h); |
| 328 | } |
| 329 | |
| 330 | // appends an ellipsis as a new closed subpath fitting the passed rectangle |
| 331 | void wxGraphicsPath::AddCircle( wxDouble x, wxDouble y, wxDouble r ) |
| 332 | { |
| 333 | AllocExclusive(); |
| 334 | GetPathData()->AddCircle(x,y,r); |
| 335 | } |
| 336 | |
| 337 | // 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) |
| 338 | void wxGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) |
| 339 | { |
| 340 | GetPathData()->AddArcToPoint(x1,y1,x2,y2,r); |
| 341 | } |
| 342 | |
| 343 | // appends an ellipse |
| 344 | void wxGraphicsPath::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) |
| 345 | { |
| 346 | AllocExclusive(); |
| 347 | GetPathData()->AddEllipse(x,y,w,h); |
| 348 | } |
| 349 | |
| 350 | // appends a rounded rectangle |
| 351 | void wxGraphicsPath::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) |
| 352 | { |
| 353 | AllocExclusive(); |
| 354 | GetPathData()->AddRoundedRectangle(x,y,w,h,radius); |
| 355 | } |
| 356 | |
| 357 | // returns the native path |
| 358 | void * wxGraphicsPath::GetNativePath() const |
| 359 | { |
| 360 | return GetPathData()->GetNativePath(); |
| 361 | } |
| 362 | |
| 363 | // give the native path returned by GetNativePath() back (there might be some deallocations necessary) |
| 364 | void wxGraphicsPath::UnGetNativePath(void *p)const |
| 365 | { |
| 366 | GetPathData()->UnGetNativePath(p); |
| 367 | } |
| 368 | |
| 369 | // transforms each point of this path by the matrix |
| 370 | void wxGraphicsPath::Transform( const wxGraphicsMatrix& matrix ) |
| 371 | { |
| 372 | AllocExclusive(); |
| 373 | GetPathData()->Transform(matrix.GetMatrixData()); |
| 374 | } |
| 375 | |
| 376 | // gets the bounding box enclosing all points (possibly including control points) |
| 377 | void wxGraphicsPath::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const |
| 378 | { |
| 379 | GetPathData()->GetBox(x,y,w,h); |
| 380 | } |
| 381 | |
| 382 | bool wxGraphicsPath::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const |
| 383 | { |
| 384 | return GetPathData()->Contains(x,y,fillStyle); |
| 385 | } |
| 386 | |
| 387 | // |
| 388 | // Emulations, these mus be implemented in the ...Data classes in order to allow for proper overrides |
| 389 | // |
| 390 | |
| 391 | void wxGraphicsPathData::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) |
| 392 | { |
| 393 | // calculate using degree elevation to a cubic bezier |
| 394 | wxPoint2DDouble c1; |
| 395 | wxPoint2DDouble c2; |
| 396 | |
| 397 | wxPoint2DDouble start; |
| 398 | GetCurrentPoint(&start.m_x,&start.m_y); |
| 399 | wxPoint2DDouble end(x,y); |
| 400 | wxPoint2DDouble c(cx,cy); |
| 401 | c1 = wxDouble(1/3.0) * start + wxDouble(2/3.0) * c; |
| 402 | c2 = wxDouble(2/3.0) * c + wxDouble(1/3.0) * end; |
| 403 | AddCurveToPoint(c1.m_x,c1.m_y,c2.m_x,c2.m_y,x,y); |
| 404 | } |
| 405 | |
| 406 | void wxGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) |
| 407 | { |
| 408 | MoveToPoint(x,y); |
| 409 | AddLineToPoint(x,y+h); |
| 410 | AddLineToPoint(x+w,y+h); |
| 411 | AddLineToPoint(x+w,y); |
| 412 | CloseSubpath(); |
| 413 | } |
| 414 | |
| 415 | void wxGraphicsPathData::AddCircle( wxDouble x, wxDouble y, wxDouble r ) |
| 416 | { |
| 417 | MoveToPoint(x+r,y); |
| 418 | AddArc( x,y,r,0,2*M_PI,false); |
| 419 | CloseSubpath(); |
| 420 | } |
| 421 | |
| 422 | void wxGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) |
| 423 | { |
| 424 | if (w <= 0. || h <= 0.) |
| 425 | return; |
| 426 | |
| 427 | wxDouble rw = w/2; |
| 428 | wxDouble rh = h/2; |
| 429 | wxDouble xc = x + rw; |
| 430 | wxDouble yc = y + rh; |
| 431 | wxGraphicsMatrix m = GetRenderer()->CreateMatrix(); |
| 432 | m.Translate(xc,yc); |
| 433 | m.Scale(rw/rh,1.0); |
| 434 | wxGraphicsPath p = GetRenderer()->CreatePath(); |
| 435 | p.AddCircle(0,0,rh); |
| 436 | p.Transform(m); |
| 437 | AddPath(p.GetPathData()); |
| 438 | } |
| 439 | |
| 440 | void wxGraphicsPathData::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) |
| 441 | { |
| 442 | if ( radius == 0 ) |
| 443 | AddRectangle(x,y,w,h); |
| 444 | else |
| 445 | { |
| 446 | MoveToPoint( x + w, y + h / 2); |
| 447 | AddArcToPoint(x + w, y + h, x + w / 2, y + h, radius); |
| 448 | AddArcToPoint(x, y + h, x, y + h / 2, radius); |
| 449 | AddArcToPoint(x, y , x + w / 2, y, radius); |
| 450 | AddArcToPoint(x + w, y, x + w, y + h / 2, radius); |
| 451 | CloseSubpath(); |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | // 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) |
| 456 | void wxGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) |
| 457 | { |
| 458 | wxPoint2DDouble current; |
| 459 | GetCurrentPoint(¤t.m_x,¤t.m_y); |
| 460 | wxPoint2DDouble p1(x1,y1); |
| 461 | wxPoint2DDouble p2(x2,y2); |
| 462 | |
| 463 | wxPoint2DDouble v1 = current - p1; |
| 464 | v1.Normalize(); |
| 465 | wxPoint2DDouble v2 = p2 - p1; |
| 466 | v2.Normalize(); |
| 467 | |
| 468 | wxDouble alpha = v1.GetVectorAngle() - v2.GetVectorAngle(); |
| 469 | |
| 470 | if ( alpha < 0 ) |
| 471 | alpha = 360 + alpha; |
| 472 | // TODO obtuse angles |
| 473 | |
| 474 | alpha = DegToRad(alpha); |
| 475 | |
| 476 | wxDouble dist = r / sin(alpha/2) * cos(alpha/2); |
| 477 | // calculate tangential points |
| 478 | wxPoint2DDouble t1 = dist*v1 + p1; |
| 479 | |
| 480 | wxPoint2DDouble nv1 = v1; |
| 481 | nv1.SetVectorAngle(v1.GetVectorAngle()-90); |
| 482 | wxPoint2DDouble c = t1 + r*nv1; |
| 483 | |
| 484 | wxDouble a1 = v1.GetVectorAngle()+90; |
| 485 | wxDouble a2 = v2.GetVectorAngle()-90; |
| 486 | |
| 487 | AddLineToPoint(t1.m_x,t1.m_y); |
| 488 | AddArc(c.m_x,c.m_y,r,DegToRad(a1),DegToRad(a2),true); |
| 489 | AddLineToPoint(p2.m_x,p2.m_y); |
| 490 | } |
| 491 | |
| 492 | //----------------------------------------------------------------------------- |
| 493 | // wxGraphicsGradientStops |
| 494 | //----------------------------------------------------------------------------- |
| 495 | |
| 496 | void wxGraphicsGradientStops::Add(const wxGraphicsGradientStop& stop) |
| 497 | { |
| 498 | for ( wxVector<wxGraphicsGradientStop>::iterator it = m_stops.begin(); |
| 499 | it != m_stops.end(); |
| 500 | ++it ) |
| 501 | { |
| 502 | if ( stop.GetPosition() < it->GetPosition() ) |
| 503 | { |
| 504 | if ( it != m_stops.begin() ) |
| 505 | { |
| 506 | m_stops.insert(it, stop); |
| 507 | } |
| 508 | else // we shouldn't be inserting it at the beginning |
| 509 | { |
| 510 | wxFAIL_MSG( "invalid gradient stop position < 0" ); |
| 511 | } |
| 512 | |
| 513 | return; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | if ( stop.GetPosition() == 1. ) |
| 518 | { |
| 519 | m_stops.insert(m_stops.end() - 1, stop); |
| 520 | } |
| 521 | else |
| 522 | { |
| 523 | wxFAIL_MSG( "invalid gradient stop position > 1" ); |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | void * wxGraphicsBitmap::GetNativeBitmap() const |
| 528 | { |
| 529 | return GetBitmapData()->GetNativeBitmap(); |
| 530 | } |
| 531 | |
| 532 | //----------------------------------------------------------------------------- |
| 533 | // wxGraphicsContext Convenience Methods |
| 534 | //----------------------------------------------------------------------------- |
| 535 | |
| 536 | IMPLEMENT_ABSTRACT_CLASS(wxGraphicsContext, wxObject) |
| 537 | |
| 538 | |
| 539 | wxGraphicsContext::wxGraphicsContext(wxGraphicsRenderer* renderer) : |
| 540 | wxGraphicsObject(renderer), |
| 541 | m_antialias(wxANTIALIAS_DEFAULT), |
| 542 | m_composition(wxCOMPOSITION_OVER), |
| 543 | m_enableOffset(false) |
| 544 | { |
| 545 | } |
| 546 | |
| 547 | wxGraphicsContext::~wxGraphicsContext() |
| 548 | { |
| 549 | } |
| 550 | |
| 551 | bool wxGraphicsContext::StartDoc(const wxString& WXUNUSED(message)) |
| 552 | { |
| 553 | return true; |
| 554 | } |
| 555 | |
| 556 | void wxGraphicsContext::EndDoc() |
| 557 | { |
| 558 | } |
| 559 | |
| 560 | void wxGraphicsContext::StartPage(wxDouble WXUNUSED(width), |
| 561 | wxDouble WXUNUSED(height)) |
| 562 | { |
| 563 | } |
| 564 | |
| 565 | void wxGraphicsContext::EndPage() |
| 566 | { |
| 567 | } |
| 568 | |
| 569 | void wxGraphicsContext::Flush() |
| 570 | { |
| 571 | } |
| 572 | |
| 573 | void wxGraphicsContext::EnableOffset(bool enable) |
| 574 | { |
| 575 | m_enableOffset = enable; |
| 576 | } |
| 577 | |
| 578 | #if 0 |
| 579 | void wxGraphicsContext::SetAlpha( wxDouble WXUNUSED(alpha) ) |
| 580 | { |
| 581 | } |
| 582 | |
| 583 | wxDouble wxGraphicsContext::GetAlpha() const |
| 584 | { |
| 585 | return 1.0; |
| 586 | } |
| 587 | #endif |
| 588 | |
| 589 | void wxGraphicsContext::GetDPI( wxDouble* dpiX, wxDouble* dpiY) |
| 590 | { |
| 591 | *dpiX = 72.0; |
| 592 | *dpiY = 72.0; |
| 593 | } |
| 594 | |
| 595 | // sets the pen |
| 596 | void wxGraphicsContext::SetPen( const wxGraphicsPen& pen ) |
| 597 | { |
| 598 | m_pen = pen; |
| 599 | } |
| 600 | |
| 601 | void wxGraphicsContext::SetPen( const wxPen& pen ) |
| 602 | { |
| 603 | if ( !pen.IsOk() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT ) |
| 604 | SetPen( wxNullGraphicsPen ); |
| 605 | else |
| 606 | SetPen( CreatePen( pen ) ); |
| 607 | } |
| 608 | |
| 609 | // sets the brush for filling |
| 610 | void wxGraphicsContext::SetBrush( const wxGraphicsBrush& brush ) |
| 611 | { |
| 612 | m_brush = brush; |
| 613 | } |
| 614 | |
| 615 | void wxGraphicsContext::SetBrush( const wxBrush& brush ) |
| 616 | { |
| 617 | if ( !brush.IsOk() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT ) |
| 618 | SetBrush( wxNullGraphicsBrush ); |
| 619 | else |
| 620 | SetBrush( CreateBrush( brush ) ); |
| 621 | } |
| 622 | |
| 623 | // sets the brush for filling |
| 624 | void wxGraphicsContext::SetFont( const wxGraphicsFont& font ) |
| 625 | { |
| 626 | m_font = font; |
| 627 | } |
| 628 | |
| 629 | void wxGraphicsContext::SetFont( const wxFont& font, const wxColour& colour ) |
| 630 | { |
| 631 | if ( font.IsOk() ) |
| 632 | SetFont( CreateFont( font, colour ) ); |
| 633 | else |
| 634 | SetFont( wxNullGraphicsFont ); |
| 635 | } |
| 636 | |
| 637 | void wxGraphicsContext::DrawPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle ) |
| 638 | { |
| 639 | FillPath( path , fillStyle ); |
| 640 | StrokePath( path ); |
| 641 | } |
| 642 | |
| 643 | void |
| 644 | wxGraphicsContext::DoDrawRotatedText(const wxString &str, |
| 645 | wxDouble x, |
| 646 | wxDouble y, |
| 647 | wxDouble angle) |
| 648 | { |
| 649 | Translate(x,y); |
| 650 | Rotate( -angle ); |
| 651 | DrawText( str , 0, 0 ); |
| 652 | Rotate( angle ); |
| 653 | Translate(-x,-y); |
| 654 | } |
| 655 | |
| 656 | void |
| 657 | wxGraphicsContext::DoDrawFilledText(const wxString &str, |
| 658 | wxDouble x, |
| 659 | wxDouble y, |
| 660 | const wxGraphicsBrush& backgroundBrush) |
| 661 | { |
| 662 | wxGraphicsBrush formerBrush = m_brush; |
| 663 | wxGraphicsPen formerPen = m_pen; |
| 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 | DrawRectangle(x , y, width, height); |
| 674 | |
| 675 | DrawText( str, x ,y); |
| 676 | SetBrush( formerBrush ); |
| 677 | SetPen( formerPen ); |
| 678 | } |
| 679 | |
| 680 | void |
| 681 | wxGraphicsContext::DoDrawRotatedFilledText(const wxString &str, |
| 682 | wxDouble x, wxDouble y, |
| 683 | wxDouble angle, |
| 684 | const wxGraphicsBrush& backgroundBrush) |
| 685 | { |
| 686 | wxGraphicsBrush formerBrush = m_brush; |
| 687 | wxGraphicsPen formerPen = m_pen; |
| 688 | |
| 689 | wxDouble width; |
| 690 | wxDouble height; |
| 691 | wxDouble descent; |
| 692 | wxDouble externalLeading; |
| 693 | GetTextExtent( str , &width, &height, &descent, &externalLeading ); |
| 694 | SetBrush( backgroundBrush ); |
| 695 | // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape |
| 696 | SetPen( wxNullGraphicsPen ); |
| 697 | |
| 698 | wxGraphicsPath path = CreatePath(); |
| 699 | path.MoveToPoint( x , y ); |
| 700 | path.AddLineToPoint( (int) (x + sin(angle) * height) , (int) (y + cos(angle) * height) ); |
| 701 | path.AddLineToPoint( |
| 702 | (int) (x + sin(angle) * height + cos(angle) * width) , |
| 703 | (int) (y + cos(angle) * height - sin(angle) * width)); |
| 704 | path.AddLineToPoint((int) (x + cos(angle) * width) , (int) (y - sin(angle) * width) ); |
| 705 | FillPath( path ); |
| 706 | DrawText( str, x ,y, angle); |
| 707 | SetBrush( formerBrush ); |
| 708 | SetPen( formerPen ); |
| 709 | } |
| 710 | |
| 711 | void wxGraphicsContext::StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2) |
| 712 | { |
| 713 | wxGraphicsPath path = CreatePath(); |
| 714 | path.MoveToPoint(x1, y1); |
| 715 | path.AddLineToPoint( x2, y2 ); |
| 716 | StrokePath( path ); |
| 717 | } |
| 718 | |
| 719 | void wxGraphicsContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h) |
| 720 | { |
| 721 | wxGraphicsPath path = CreatePath(); |
| 722 | path.AddRectangle( x , y , w , h ); |
| 723 | DrawPath( path ); |
| 724 | } |
| 725 | |
| 726 | void wxGraphicsContext::DrawEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) |
| 727 | { |
| 728 | wxGraphicsPath path = CreatePath(); |
| 729 | path.AddEllipse(x,y,w,h); |
| 730 | DrawPath(path); |
| 731 | } |
| 732 | |
| 733 | void wxGraphicsContext::DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) |
| 734 | { |
| 735 | wxGraphicsPath path = CreatePath(); |
| 736 | path.AddRoundedRectangle(x,y,w,h,radius); |
| 737 | DrawPath(path); |
| 738 | } |
| 739 | |
| 740 | void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *points) |
| 741 | { |
| 742 | wxASSERT(n > 1); |
| 743 | wxGraphicsPath path = CreatePath(); |
| 744 | path.MoveToPoint(points[0].m_x, points[0].m_y); |
| 745 | for ( size_t i = 1; i < n; ++i) |
| 746 | path.AddLineToPoint( points[i].m_x, points[i].m_y ); |
| 747 | StrokePath( path ); |
| 748 | } |
| 749 | |
| 750 | void wxGraphicsContext::DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode fillStyle) |
| 751 | { |
| 752 | wxASSERT(n > 1); |
| 753 | wxGraphicsPath path = CreatePath(); |
| 754 | path.MoveToPoint(points[0].m_x, points[0].m_y); |
| 755 | for ( size_t i = 1; i < n; ++i) |
| 756 | path.AddLineToPoint( points[i].m_x, points[i].m_y ); |
| 757 | DrawPath( path , fillStyle); |
| 758 | } |
| 759 | |
| 760 | void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints) |
| 761 | { |
| 762 | wxASSERT(n > 0); |
| 763 | wxGraphicsPath path = CreatePath(); |
| 764 | for ( size_t i = 0; i < n; ++i) |
| 765 | { |
| 766 | path.MoveToPoint(beginPoints[i].m_x, beginPoints[i].m_y); |
| 767 | path.AddLineToPoint( endPoints[i].m_x, endPoints[i].m_y ); |
| 768 | } |
| 769 | StrokePath( path ); |
| 770 | } |
| 771 | |
| 772 | // create a 'native' matrix corresponding to these values |
| 773 | wxGraphicsMatrix wxGraphicsContext::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d, |
| 774 | wxDouble tx, wxDouble ty) const |
| 775 | { |
| 776 | return GetRenderer()->CreateMatrix(a,b,c,d,tx,ty); |
| 777 | } |
| 778 | |
| 779 | wxGraphicsPath wxGraphicsContext::CreatePath() const |
| 780 | { |
| 781 | return GetRenderer()->CreatePath(); |
| 782 | } |
| 783 | |
| 784 | wxGraphicsPen wxGraphicsContext::CreatePen(const wxPen& pen) const |
| 785 | { |
| 786 | return GetRenderer()->CreatePen(pen); |
| 787 | } |
| 788 | |
| 789 | wxGraphicsBrush wxGraphicsContext::CreateBrush(const wxBrush& brush ) const |
| 790 | { |
| 791 | return GetRenderer()->CreateBrush(brush); |
| 792 | } |
| 793 | |
| 794 | wxGraphicsBrush |
| 795 | wxGraphicsContext::CreateLinearGradientBrush( |
| 796 | wxDouble x1, wxDouble y1, |
| 797 | wxDouble x2, wxDouble y2, |
| 798 | const wxColour& c1, const wxColour& c2) const |
| 799 | { |
| 800 | return GetRenderer()->CreateLinearGradientBrush |
| 801 | ( |
| 802 | x1, y1, |
| 803 | x2, y2, |
| 804 | wxGraphicsGradientStops(c1,c2) |
| 805 | ); |
| 806 | } |
| 807 | |
| 808 | wxGraphicsBrush |
| 809 | wxGraphicsContext::CreateLinearGradientBrush( |
| 810 | wxDouble x1, wxDouble y1, |
| 811 | wxDouble x2, wxDouble y2, |
| 812 | const wxGraphicsGradientStops& gradientStops) const |
| 813 | { |
| 814 | return GetRenderer()->CreateLinearGradientBrush(x1,y1,x2,y2, gradientStops); |
| 815 | } |
| 816 | |
| 817 | wxGraphicsBrush |
| 818 | wxGraphicsContext::CreateRadialGradientBrush( |
| 819 | wxDouble xo, wxDouble yo, |
| 820 | wxDouble xc, wxDouble yc, wxDouble radius, |
| 821 | const wxColour &oColor, const wxColour &cColor) const |
| 822 | { |
| 823 | return GetRenderer()->CreateRadialGradientBrush |
| 824 | ( |
| 825 | xo, yo, |
| 826 | xc, yc, radius, |
| 827 | wxGraphicsGradientStops(oColor, cColor) |
| 828 | ); |
| 829 | } |
| 830 | |
| 831 | wxGraphicsBrush |
| 832 | wxGraphicsContext::CreateRadialGradientBrush( |
| 833 | wxDouble xo, wxDouble yo, |
| 834 | wxDouble xc, wxDouble yc, wxDouble radius, |
| 835 | const wxGraphicsGradientStops& gradientStops) const |
| 836 | { |
| 837 | return GetRenderer()->CreateRadialGradientBrush |
| 838 | ( |
| 839 | xo, yo, |
| 840 | xc, yc, radius, |
| 841 | gradientStops |
| 842 | ); |
| 843 | } |
| 844 | |
| 845 | wxGraphicsFont wxGraphicsContext::CreateFont( const wxFont &font , const wxColour &col ) const |
| 846 | { |
| 847 | return GetRenderer()->CreateFont(font,col); |
| 848 | } |
| 849 | |
| 850 | wxGraphicsFont |
| 851 | wxGraphicsContext::CreateFont(double size, |
| 852 | const wxString& facename, |
| 853 | int flags, |
| 854 | const wxColour& col) const |
| 855 | { |
| 856 | return GetRenderer()->CreateFont(size, facename, flags, col); |
| 857 | } |
| 858 | |
| 859 | wxGraphicsBitmap wxGraphicsContext::CreateBitmap( const wxBitmap& bmp ) const |
| 860 | { |
| 861 | return GetRenderer()->CreateBitmap(bmp); |
| 862 | } |
| 863 | |
| 864 | #if wxUSE_IMAGE |
| 865 | wxGraphicsBitmap wxGraphicsContext::CreateBitmapFromImage(const wxImage& image) const |
| 866 | { |
| 867 | return GetRenderer()->CreateBitmapFromImage(image); |
| 868 | } |
| 869 | #endif // wxUSE_IMAGE |
| 870 | |
| 871 | wxGraphicsBitmap wxGraphicsContext::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) const |
| 872 | { |
| 873 | return GetRenderer()->CreateSubBitmap(bmp,x,y,w,h); |
| 874 | } |
| 875 | |
| 876 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC& dc) |
| 877 | { |
| 878 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); |
| 879 | } |
| 880 | |
| 881 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxMemoryDC& dc) |
| 882 | { |
| 883 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); |
| 884 | } |
| 885 | |
| 886 | #if wxUSE_PRINTING_ARCHITECTURE |
| 887 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxPrinterDC& dc) |
| 888 | { |
| 889 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); |
| 890 | } |
| 891 | #endif |
| 892 | |
| 893 | #ifdef __WXMSW__ |
| 894 | #if wxUSE_ENH_METAFILE |
| 895 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxEnhMetaFileDC& dc) |
| 896 | { |
| 897 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); |
| 898 | } |
| 899 | #endif |
| 900 | #endif |
| 901 | |
| 902 | wxGraphicsContext* wxGraphicsContext::CreateFromNative( void * context ) |
| 903 | { |
| 904 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeContext(context); |
| 905 | } |
| 906 | |
| 907 | wxGraphicsContext* wxGraphicsContext::CreateFromNativeWindow( void * window ) |
| 908 | { |
| 909 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeWindow(window); |
| 910 | } |
| 911 | |
| 912 | wxGraphicsContext* wxGraphicsContext::Create( wxWindow* window ) |
| 913 | { |
| 914 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(window); |
| 915 | } |
| 916 | |
| 917 | #if wxUSE_IMAGE |
| 918 | /* static */ wxGraphicsContext* wxGraphicsContext::Create(wxImage& image) |
| 919 | { |
| 920 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromImage(image); |
| 921 | } |
| 922 | #endif // wxUSE_IMAGE |
| 923 | |
| 924 | wxGraphicsContext* wxGraphicsContext::Create() |
| 925 | { |
| 926 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateMeasuringContext(); |
| 927 | } |
| 928 | |
| 929 | //----------------------------------------------------------------------------- |
| 930 | // wxGraphicsRenderer |
| 931 | //----------------------------------------------------------------------------- |
| 932 | |
| 933 | IMPLEMENT_ABSTRACT_CLASS(wxGraphicsRenderer, wxObject) |
| 934 | |
| 935 | #endif // wxUSE_GRAPHICS_CONTEXT |