src/display/nr-arena-shape.cpp

   1 #define __NR_ARENA_SHAPE_C__
   2
   3 /*
   4  * RGBA display list system for inkscape
   5  *
   6  * Author:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *
   9  * Copyright (C) 2001-2002 Lauris Kaplinski
  10  * Copyright (C) 2001 Ximian, Inc.
  11  *
  12  * Released under GNU GPL, read the file 'COPYING' for more information
  13  */
  14
  15
  16
  17 #include <display/nr-arena.h>
  18 #include <display/nr-arena-shape.h>
  19 #include "display/nr-filter.h"
  20 #include "display/nr-filter-gaussian.h"
  21 #include "display/nr-filter-types.h"
  22 #include <libnr/n-art-bpath.h>
  23 #include <libnr/nr-path.h>
  24 #include <libnr/nr-pixops.h>
  25 #include <libnr/nr-matrix-ops.h>
  26 #include <libnr/nr-matrix-fns.h>
  27 #include <libnr/nr-blit.h>
  28 #include <livarot/Path.h>
  29 #include <livarot/float-line.h>
  30 #include <livarot/int-line.h>
  31 #include <style.h>
  32 #include "prefs-utils.h"
  33 #include "sp-filter.h"
  34 #include "sp-gaussian-blur.h"
  35
  36 #include <cairo.h>
  37
  38 //int  showRuns=0;
  39 void nr_pixblock_render_shape_mask_or(NRPixBlock &m,Shape* theS);
  40
  41 static void nr_arena_shape_class_init(NRArenaShapeClass *klass);
  42 static void nr_arena_shape_init(NRArenaShape *shape);
  43 static void nr_arena_shape_finalize(NRObject *object);
  44
  45 static NRArenaItem *nr_arena_shape_children(NRArenaItem *item);
  46 static void nr_arena_shape_add_child(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
  47 static void nr_arena_shape_remove_child(NRArenaItem *item, NRArenaItem *child);
  48 static void nr_arena_shape_set_child_position(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
  49
  50 static guint nr_arena_shape_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
  51 static unsigned int nr_arena_shape_render(NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);
  52 static guint nr_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
  53 static NRArenaItem *nr_arena_shape_pick(NRArenaItem *item, NR::Point p, double delta, unsigned int sticky);
  54
  55 static NRArenaItemClass *shape_parent_class;
  56
  57 NRType
  58 nr_arena_shape_get_type(void)
  59 {
  60     static NRType type = 0;
  61     if (!type) {
  62         type = nr_object_register_type(NR_TYPE_ARENA_ITEM,
  63                                        "NRArenaShape",
  64                                        sizeof(NRArenaShapeClass),
  65                                        sizeof(NRArenaShape),
  66                                        (void (*)(NRObjectClass *)) nr_arena_shape_class_init,
  67                                        (void (*)(NRObject *)) nr_arena_shape_init);
  68     }
  69     return type;
  70 }
  71
  72 static void
  73 nr_arena_shape_class_init(NRArenaShapeClass *klass)
  74 {
  75     NRObjectClass *object_class;
  76     NRArenaItemClass *item_class;
  77
  78     object_class = (NRObjectClass *) klass;
  79     item_class = (NRArenaItemClass *) klass;
  80
  81     shape_parent_class = (NRArenaItemClass *)  ((NRObjectClass *) klass)->parent;
  82
  83     object_class->finalize = nr_arena_shape_finalize;
  84     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaShape>;
  85
  86     item_class->children = nr_arena_shape_children;
  87     item_class->add_child = nr_arena_shape_add_child;
  88     item_class->set_child_position = nr_arena_shape_set_child_position;
  89     item_class->remove_child = nr_arena_shape_remove_child;
  90     item_class->update = nr_arena_shape_update;
  91     item_class->render = nr_arena_shape_render;
  92     item_class->clip = nr_arena_shape_clip;
  93     item_class->pick = nr_arena_shape_pick;
  94 }
  95
  96 /**
  97  * Initializes the arena shape, setting all parameters to null, 0, false,
  98  * or other defaults
  99  */
 100 static void
 101 nr_arena_shape_init(NRArenaShape *shape)
 102 {
 103     shape->curve = NULL;
 104     shape->style = NULL;
 105     shape->paintbox.x0 = shape->paintbox.y0 = 0.0F;
 106     shape->paintbox.x1 = shape->paintbox.y1 = 256.0F;
 107
 108     nr_matrix_set_identity(&shape->ctm);
 109     shape->fill_painter = NULL;
 110     shape->stroke_painter = NULL;
 111     shape->cached_fill = NULL;
 112     shape->cached_stroke = NULL;
 113     shape->cached_fpartialy = false;
 114     shape->cached_spartialy = false;
 115     shape->fill_shp = NULL;
 116     shape->stroke_shp = NULL;
 117
 118     shape->delayed_shp = false;
 119
 120     shape->approx_bbox.x0 = shape->approx_bbox.y0 = 0;
 121     shape->approx_bbox.x1 = shape->approx_bbox.y1 = 0;
 122     nr_matrix_set_identity(&shape->cached_fctm);
 123     nr_matrix_set_identity(&shape->cached_sctm);
 124
 125     shape->markers = NULL;
 126 }
 127
 128 static void
 129 nr_arena_shape_finalize(NRObject *object)
 130 {
 131     NRArenaShape *shape = (NRArenaShape *) object;
 132
 133     if (shape->fill_shp) delete shape->fill_shp;
 134     if (shape->stroke_shp) delete shape->stroke_shp;
 135     if (shape->cached_fill) delete shape->cached_fill;
 136     if (shape->cached_stroke) delete shape->cached_stroke;
 137     if (shape->fill_painter) sp_painter_free(shape->fill_painter);
 138     if (shape->stroke_painter) sp_painter_free(shape->stroke_painter);
 139
 140     if (shape->style) sp_style_unref(shape->style);
 141     if (shape->curve) sp_curve_unref(shape->curve);
 142
 143     ((NRObjectClass *) shape_parent_class)->finalize(object);
 144 }
 145
 146 /**
 147  * Retrieves the markers from the item
 148  */
 149 static NRArenaItem *
 150 nr_arena_shape_children(NRArenaItem *item)
 151 {
 152     NRArenaShape *shape = (NRArenaShape *) item;
 153
 154     return shape->markers;
 155 }
 156
 157 /**
 158  * Attaches child to item, and if ref is not NULL, sets it and ref->next as
 159  * the prev and next items.  If ref is NULL, then it sets the item's markers
 160  * as the next items.
 161  */
 162 static void
 163 nr_arena_shape_add_child(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
 164 {
 165     NRArenaShape *shape = (NRArenaShape *) item;
 166
 167     if (!ref) {
 168         shape->markers = nr_arena_item_attach(item, child, NULL, shape->markers);
 169     } else {
 170         ref->next = nr_arena_item_attach(item, child, ref, ref->next);
 171     }
 172
 173     nr_arena_item_request_update(item, NR_ARENA_ITEM_STATE_ALL, FALSE);
 174 }
 175
 176 /**
 177  * Removes child from the shape.  If there are no prev items in
 178  * the child, it sets items' markers to the next item in the child.
 179  */
 180 static void
 181 nr_arena_shape_remove_child(NRArenaItem *item, NRArenaItem *child)
 182 {
 183     NRArenaShape *shape = (NRArenaShape *) item;
 184
 185     if (child->prev) {
 186         nr_arena_item_detach(item, child);
 187     } else {
 188         shape->markers = nr_arena_item_detach(item, child);
 189     }
 190
 191     nr_arena_item_request_update(item, NR_ARENA_ITEM_STATE_ALL, FALSE);
 192 }
 193
 194 /**
 195  * Detaches child from item, and if there are no previous items in child, it
 196  * sets item's markers to the child.  It then attaches the child back onto the item.
 197  * If ref is null, it sets the markers to be the next item, otherwise it uses
 198  * the next/prev items in ref.
 199  */
 200 static void
 201 nr_arena_shape_set_child_position(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
 202 {
 203     NRArenaShape *shape = (NRArenaShape *) item;
 204
 205     if (child->prev) {
 206         nr_arena_item_detach(item, child);
 207     } else {
 208         shape->markers = nr_arena_item_detach(item, child);
 209     }
 210
 211     if (!ref) {
 212         shape->markers = nr_arena_item_attach(item, child, NULL, shape->markers);
 213     } else {
 214         ref->next = nr_arena_item_attach(item, child, ref, ref->next);
 215     }
 216
 217     nr_arena_item_request_render(child);
 218 }
 219
 220 void nr_arena_shape_update_stroke(NRArenaShape *shape, NRGC* gc, NRRectL *area);
 221 void nr_arena_shape_update_fill(NRArenaShape *shape, NRGC *gc, NRRectL *area, bool force_shape = false);
 222 void nr_arena_shape_add_bboxes(NRArenaShape* shape,NRRect &bbox);
 223
 224 /**
 225  * Updates the arena shape 'item' and all of its children, including the markers.
 226  */
 227 static guint
 228 nr_arena_shape_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset)
 229 {
 230     NRRect bbox;
 231
 232     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 233
 234     unsigned int beststate = NR_ARENA_ITEM_STATE_ALL;
 235
 236     unsigned int newstate;
 237     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 238         newstate = nr_arena_item_invoke_update(child, area, gc, state, reset);
 239         beststate = beststate & newstate;
 240     }
 241
 242     if (!(state & NR_ARENA_ITEM_STATE_RENDER)) {
 243         /* We do not have to create rendering structures */
 244         shape->ctm = gc->transform;
 245         if (state & NR_ARENA_ITEM_STATE_BBOX) {
 246             if (shape->curve) {
 247                 NRBPath bp;
 248                 /* fixme: */
 249                 bbox.x0 = bbox.y0 = NR_HUGE;
 250                 bbox.x1 = bbox.y1 = -NR_HUGE;
 251                 bp.path = SP_CURVE_BPATH(shape->curve);
 252                 nr_path_matrix_bbox_union(&bp, gc->transform, &bbox);
 253                 item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 254                 item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 255                 item->bbox.x1 = (gint32)(bbox.x1 + 1.9999F);
 256                 item->bbox.y1 = (gint32)(bbox.y1 + 1.9999F);
 257             }
 258             if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 259                 for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 260                     nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 261                 }
 262             }
 263         }
 264         return (state | item->state);
 265     }
 266
 267     shape->delayed_shp=true;
 268     shape->ctm = gc->transform;
 269     bbox.x0 = bbox.y0 = NR_HUGE;
 270     bbox.x1 = bbox.y1 = -NR_HUGE;
 271
 272     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == RENDERMODE_OUTLINE);
 273
 274     if (shape->curve) {
 275         NRBPath bp;
 276         /* fixme: */
 277         bbox.x0 = bbox.y0 = NR_HUGE;
 278         bbox.x1 = bbox.y1 = -NR_HUGE;
 279         bp.path = SP_CURVE_BPATH(shape->curve);
 280         nr_path_matrix_bbox_union(&bp, gc->transform, &bbox);
 281         if (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE || outline) {
 282             float width, scale;
 283             scale = NR_MATRIX_DF_EXPANSION(&gc->transform);
 284             width = MAX(0.125, shape->_stroke.width * scale);
 285             if ( fabs(shape->_stroke.width * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
 286                 bbox.x0-=width;
 287                 bbox.x1+=width;
 288                 bbox.y0-=width;
 289                 bbox.y1+=width;
 290             }
 291             // those pesky miters, now
 292             float miterMax=width*shape->_stroke.mitre_limit;
 293             if ( miterMax > 0.01 ) {
 294                 // grunt mode. we should compute the various miters instead (one for each point on the curve)
 295                 bbox.x0-=miterMax;
 296                 bbox.x1+=miterMax;
 297                 bbox.y0-=miterMax;
 298                 bbox.y1+=miterMax;
 299             }
 300         }
 301     } else {
 302     }
 303     shape->approx_bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 304     shape->approx_bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 305     shape->approx_bbox.x1 = (gint32)(bbox.x1 + 1.9999F);
 306     shape->approx_bbox.y1 = (gint32)(bbox.y1 + 1.9999F);
 307     if ( area && nr_rect_l_test_intersect(area, &shape->approx_bbox) ) shape->delayed_shp=false;
 308
 309     /* Release state data */
 310     if (TRUE || !nr_matrix_test_transform_equal(&gc->transform, &shape->ctm, NR_EPSILON)) {
 311         /* Concept test */
 312         if (shape->fill_shp) {
 313             delete shape->fill_shp;
 314             shape->fill_shp = NULL;
 315         }
 316     }
 317     if (shape->stroke_shp) {
 318         delete shape->stroke_shp;
 319         shape->stroke_shp = NULL;
 320     }
 321     if (shape->fill_painter) {
 322         sp_painter_free(shape->fill_painter);
 323         shape->fill_painter = NULL;
 324     }
 325     if (shape->stroke_painter) {
 326         sp_painter_free(shape->stroke_painter);
 327         shape->stroke_painter = NULL;
 328     }
 329
 330     if (!shape->curve ||
 331         !shape->style ||
 332         sp_curve_is_empty(shape->curve) ||
 333         (( shape->_fill.paint.type() == NRArenaShape::Paint::NONE ) &&
 334          ( shape->_stroke.paint.type() == NRArenaShape::Paint::NONE && !outline) ))
 335     {
 336         item->bbox = shape->approx_bbox;
 337         return NR_ARENA_ITEM_STATE_ALL;
 338     }
 339
 340     /* Build state data */
 341     if ( shape->delayed_shp ) {
 342         item->bbox=shape->approx_bbox;
 343     } else {
 344         nr_arena_shape_update_stroke(shape, gc, area);
 345         nr_arena_shape_update_fill(shape, gc, area);
 346
 347         bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 348         nr_arena_shape_add_bboxes(shape,bbox);
 349
 350         shape->approx_bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 351         shape->approx_bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 352         shape->approx_bbox.x1 = (gint32)(bbox.x1 + 1.9999F);
 353         shape->approx_bbox.y1 = (gint32)(bbox.y1 + 1.9999F);
 354     }
 355
 356     if (nr_rect_d_test_empty(&bbox)) return NR_ARENA_ITEM_STATE_ALL;
 357
 358     item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 359     item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 360     item->bbox.x1 = (gint32)(bbox.x1 + 1.0F);
 361     item->bbox.y1 = (gint32)(bbox.y1 + 1.0F);
 362     nr_arena_request_render_rect(item->arena, &item->bbox);
 363
 364     item->render_opacity = TRUE;
 365     if ( shape->_fill.paint.type() == NRArenaShape::Paint::SERVER ) {
 366         if (gc && gc->parent) {
 367             shape->fill_painter = sp_paint_server_painter_new(shape->_fill.paint.server(),
 368                                                               NR::Matrix(&gc->transform), NR::Matrix(&gc->parent->transform),
 369                                                               &shape->paintbox);
 370         }
 371         item->render_opacity = FALSE;
 372     }
 373     if ( shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER ) {
 374         if (gc && gc->parent) {
 375             shape->stroke_painter = sp_paint_server_painter_new(shape->_stroke.paint.server(),
 376                                                                 NR::Matrix(&gc->transform), NR::Matrix(&gc->parent->transform),
 377                                                                 &shape->paintbox);
 378         }
 379         item->render_opacity = FALSE;
 380     }
 381     if ( item->render_opacity == TRUE
 382          && shape->_fill.paint.type()   != NRArenaShape::Paint::NONE
 383          && shape->_stroke.paint.type() != NRArenaShape::Paint::NONE )
 384     {
 385         // don't merge item opacity with paint opacity if there is a stroke on the fill
 386         item->render_opacity = FALSE;
 387     }
 388
 389     if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 390         for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 391             nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 392         }
 393     }
 394
 395     return NR_ARENA_ITEM_STATE_ALL;
 396 }
 397
 398 int matrix_is_isometry(NR::Matrix p) {
 399     NR::Matrix   tp;
 400     // transposition
 401     tp[0]=p[0];
 402     tp[1]=p[2];
 403     tp[2]=p[1];
 404     tp[3]=p[3];
 405     for (int i = 4; i < 6; i++) // shut valgrind up :)
 406         tp[i] = p[i] = 0;
 407     NR::Matrix   isom = tp*p; // A^T * A = adjunct?
 408     // Is the adjunct nearly an identity function?
 409     if (isom.is_translation(0.01)) {
 410         // the transformation is an isometry -> no need to recompute
 411         // the uncrossed polygon
 412         if ( p.det() < 0 )
 413             return -1;
 414         else
 415             return 1;
 416     }
 417     return 0;
 418 }
 419
 420 static bool is_inner_area(NRRectL const &outer, NRRectL const &inner) {
 421     return (outer.x0 <= inner.x0 && outer.y0 <= inner.y0 && outer.x1 >= inner.x1 && outer.y1 >= inner.y1);
 422 }
 423
 424 /** force_shape is used for clipping paths, when we need the shape for clipping even if it's not filled */
 425 void
 426 nr_arena_shape_update_fill(NRArenaShape *shape, NRGC *gc, NRRectL *area, bool force_shape)
 427 {
 428     if ((shape->_fill.paint.type() != NRArenaShape::Paint::NONE || force_shape) &&
 429         ((shape->curve->end > 2) || (SP_CURVE_BPATH(shape->curve)[1].code == NR_CURVETO)) ) {
 430         if (TRUE || !shape->fill_shp) {
 431             NR::Matrix  cached_to_new = NR::identity();
 432             int isometry = 0;
 433             if ( shape->cached_fill ) {
 434                 if (shape->cached_fctm == gc->transform) {
 435                     isometry = 2; // identity
 436                 } else {
 437                     cached_to_new = shape->cached_fctm.inverse() * gc->transform;
 438                     isometry = matrix_is_isometry(cached_to_new);
 439                 }
 440                 if (0 != isometry && !is_inner_area(shape->cached_farea, *area))
 441                     isometry = 0;
 442             }
 443             if ( isometry == 0 ) {
 444                 if ( shape->cached_fill == NULL ) shape->cached_fill=new Shape;
 445                 shape->cached_fill->Reset();
 446
 447                 Path*  thePath=new Path;
 448                 Shape* theShape=new Shape;
 449                 {
 450                     NR::Matrix   tempMat(gc->transform);
 451                     thePath->LoadArtBPath(SP_CURVE_BPATH(shape->curve),tempMat,true);
 452                 }
 453
 454                 if (is_inner_area(*area, NR_ARENA_ITEM(shape)->bbox)) {
 455                     thePath->Convert(1.0);
 456                     shape->cached_fpartialy = false;
 457                 } else {
 458                     thePath->Convert(area, 1.0);
 459                     shape->cached_fpartialy = true;
 460                 }
 461
 462                 thePath->Fill(theShape, 0);
 463
 464                 if ( shape->_fill.rule == NRArenaShape::EVEN_ODD ) {
 465                     shape->cached_fill->ConvertToShape(theShape, fill_oddEven);
 466                     // alternatively, this speeds up rendering of oddeven shapes but disables AA :(
 467                     //shape->cached_fill->Copy(theShape);
 468                 } else {
 469                     shape->cached_fill->ConvertToShape(theShape, fill_nonZero);
 470                 }
 471                 shape->cached_fctm=gc->transform;
 472                 shape->cached_farea = *area;
 473                 delete theShape;
 474                 delete thePath;
 475                 if ( shape->fill_shp == NULL )
 476                     shape->fill_shp = new Shape;
 477
 478                 shape->fill_shp->Copy(shape->cached_fill);
 479
 480             } else if ( 2 == isometry ) {
 481                 if ( shape->fill_shp == NULL ) {
 482                     shape->fill_shp = new Shape;
 483                     shape->fill_shp->Copy(shape->cached_fill);
 484                 }
 485             } else {
 486
 487                 if ( shape->fill_shp == NULL )
 488                     shape->fill_shp = new Shape;
 489
 490                 shape->fill_shp->Reset(shape->cached_fill->numberOfPoints(),
 491                                        shape->cached_fill->numberOfEdges());
 492                 for (int i = 0; i < shape->cached_fill->numberOfPoints(); i++)
 493                     shape->fill_shp->AddPoint(shape->cached_fill->getPoint(i).x * cached_to_new);
 494                 if ( isometry == 1 ) {
 495                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 496                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).st,
 497                                                  shape->cached_fill->getEdge(i).en);
 498                 } else if ( isometry == -1 ) { // need to flip poly.
 499                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 500                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).en,
 501                                                  shape->cached_fill->getEdge(i).st);
 502                 }
 503                 shape->fill_shp->ForceToPolygon();
 504                 shape->fill_shp->needPointsSorting();
 505                 shape->fill_shp->needEdgesSorting();
 506             }
 507             shape->delayed_shp |= shape->cached_fpartialy;
 508         }
 509     }
 510 }
 511
 512 void
 513 nr_arena_shape_update_stroke(NRArenaShape *shape,NRGC* gc, NRRectL *area)
 514 {
 515     SPStyle* style = shape->style;
 516
 517     float const scale = NR_MATRIX_DF_EXPANSION(&gc->transform);
 518
 519     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == RENDERMODE_OUTLINE);
 520
 521     if (outline) {
 522         return; // cairo does not need the livarot path, hehe
 523     }
 524
 525     if (outline ||
 526         ((shape->_stroke.paint.type() != NRArenaShape::Paint::NONE) &&
 527          ( fabs(shape->_stroke.width * scale) > 0.01 ))) { // sinon c'est 0=oon veut pas de bord
 528
 529         float style_width = MAX(0.125, shape->_stroke.width * scale);
 530         float width;
 531         if (outline) {
 532             width = 0.5; // 1 pixel wide, independent of zoom
 533         } else {
 534             width = style_width;
 535         }
 536
 537         NR::Matrix  cached_to_new = NR::identity();
 538
 539         int isometry = 0;
 540         if ( shape->cached_stroke ) {
 541             if (shape->cached_sctm == gc->transform) {
 542                 isometry = 2; // identity
 543             } else {
 544                 cached_to_new = shape->cached_sctm.inverse() * gc->transform;
 545                 isometry = matrix_is_isometry(cached_to_new);
 546             }
 547             if (0 != isometry && !is_inner_area(shape->cached_sarea, *area))
 548                 isometry = 0;
 549             if (0 != isometry && width != shape->cached_width) {
 550                 // if this happens without setting style, we have just switched to outline or back
 551                 isometry = 0;
 552             }
 553         }
 554
 555         if ( isometry == 0 ) {
 556             if ( shape->cached_stroke == NULL ) shape->cached_stroke=new Shape;
 557             shape->cached_stroke->Reset();
 558             Path*  thePath = new Path;
 559             Shape* theShape = new Shape;
 560             {
 561                 NR::Matrix   tempMat(gc->transform);
 562                 thePath->LoadArtBPath(SP_CURVE_BPATH(shape->curve), tempMat, true);
 563             }
 564
 565             // add some padding to the rendering area, so clipped path does not go into a render area
 566             NRRectL padded_area = *area;
 567             padded_area.x0 -= (NR::ICoord)width;
 568             padded_area.x1 += (NR::ICoord)width;
 569             padded_area.y0 -= (NR::ICoord)width;
 570             padded_area.y1 += (NR::ICoord)width;
 571             if ((style->stroke_dash.n_dash && !outline) || is_inner_area(padded_area, NR_ARENA_ITEM(shape)->bbox)) {
 572                 thePath->Convert((outline) ? 4.0 : 1.0);
 573                 shape->cached_spartialy = false;
 574             }
 575             else {
 576                 thePath->Convert(&padded_area, (outline) ? 4.0 : 1.0);
 577                 shape->cached_spartialy = true;
 578             }
 579
 580             if (style->stroke_dash.n_dash && !outline) {
 581                 thePath->DashPolylineFromStyle(style, scale, 1.0);
 582             }
 583
 584             ButtType butt=butt_straight;
 585             switch (shape->_stroke.cap) {
 586                 case NRArenaShape::BUTT_CAP:
 587                     butt = butt_straight;
 588                     break;
 589                 case NRArenaShape::ROUND_CAP:
 590                     butt = butt_round;
 591                     break;
 592                 case NRArenaShape::SQUARE_CAP:
 593                     butt = butt_square;
 594                     break;
 595             }
 596             JoinType join=join_straight;
 597             switch (shape->_stroke.join) {
 598                 case NRArenaShape::MITRE_JOIN:
 599                     join = join_pointy;
 600                     break;
 601                 case NRArenaShape::ROUND_JOIN:
 602                     join = join_round;
 603                     break;
 604                 case NRArenaShape::BEVEL_JOIN:
 605                     join = join_straight;
 606                     break;
 607             }
 608
 609             if (outline) {
 610                 butt = butt_straight;
 611                 join = join_straight;
 612             }
 613
 614             thePath->Stroke(theShape, false, 0.5*width, join, butt,
 615                             0.5*width*shape->_stroke.mitre_limit);
 616
 617
 618             if (outline) {
 619                 // speeds it up, but uses evenodd for the stroke shape (which does not matter for 1-pixel wide outline)
 620                 shape->cached_stroke->Copy(theShape);
 621             } else {
 622                 shape->cached_stroke->ConvertToShape(theShape, fill_nonZero);
 623             }
 624
 625             shape->cached_width = width;
 626
 627             shape->cached_sctm=gc->transform;
 628             shape->cached_sarea = *area;
 629             delete thePath;
 630             delete theShape;
 631             if ( shape->stroke_shp == NULL ) shape->stroke_shp=new Shape;
 632
 633             shape->stroke_shp->Copy(shape->cached_stroke);
 634
 635         } else if ( 2 == isometry ) {
 636             if ( shape->stroke_shp == NULL ) {
 637                 shape->stroke_shp=new Shape;
 638                 shape->stroke_shp->Copy(shape->cached_stroke);
 639             }
 640         } else {
 641             if ( shape->stroke_shp == NULL )
 642                 shape->stroke_shp=new Shape;
 643             shape->stroke_shp->Reset(shape->cached_stroke->numberOfPoints(), shape->cached_stroke->numberOfEdges());
 644             for (int i = 0; i < shape->cached_stroke->numberOfPoints(); i++)
 645                 shape->stroke_shp->AddPoint(shape->cached_stroke->getPoint(i).x * cached_to_new);
 646             if ( isometry == 1 ) {
 647                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 648                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).st,
 649                                                shape->cached_stroke->getEdge(i).en);
 650             } else if ( isometry == -1 ) {
 651                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 652                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).en,
 653                                                shape->cached_stroke->getEdge(i).st);
 654             }
 655             shape->stroke_shp->ForceToPolygon();
 656             shape->stroke_shp->needPointsSorting();
 657             shape->stroke_shp->needEdgesSorting();
 658         }
 659         shape->delayed_shp |= shape->cached_spartialy;
 660     }
 661 }
 662
 663
 664 void
 665 nr_arena_shape_add_bboxes(NRArenaShape* shape, NRRect &bbox)
 666 {
 667     if ( shape->stroke_shp ) {
 668         shape->stroke_shp->CalcBBox();
 669         shape->stroke_shp->leftX=floor(shape->stroke_shp->leftX);
 670         shape->stroke_shp->rightX=ceil(shape->stroke_shp->rightX);
 671         shape->stroke_shp->topY=floor(shape->stroke_shp->topY);
 672         shape->stroke_shp->bottomY=ceil(shape->stroke_shp->bottomY);
 673         if ( bbox.x0 >= bbox.x1 ) {
 674             if ( shape->stroke_shp->leftX < shape->stroke_shp->rightX ) {
 675                 bbox.x0=shape->stroke_shp->leftX;
 676                 bbox.x1=shape->stroke_shp->rightX;
 677             }
 678         } else {
 679             if ( shape->stroke_shp->leftX < bbox.x0 )
 680                 bbox.x0=shape->stroke_shp->leftX;
 681             if ( shape->stroke_shp->rightX > bbox.x1 )
 682                 bbox.x1=shape->stroke_shp->rightX;
 683         }
 684         if ( bbox.y0 >= bbox.y1 ) {
 685             if ( shape->stroke_shp->topY < shape->stroke_shp->bottomY ) {
 686                 bbox.y0=shape->stroke_shp->topY;
 687                 bbox.y1=shape->stroke_shp->bottomY;
 688             }
 689         } else {
 690             if ( shape->stroke_shp->topY < bbox.y0 )
 691                 bbox.y0=shape->stroke_shp->topY;
 692             if ( shape->stroke_shp->bottomY > bbox.y1 )
 693                 bbox.y1=shape->stroke_shp->bottomY;
 694         }
 695     }
 696     if ( shape->fill_shp ) {
 697         shape->fill_shp->CalcBBox();
 698         shape->fill_shp->leftX=floor(shape->fill_shp->leftX);
 699         shape->fill_shp->rightX=ceil(shape->fill_shp->rightX);
 700         shape->fill_shp->topY=floor(shape->fill_shp->topY);
 701         shape->fill_shp->bottomY=ceil(shape->fill_shp->bottomY);
 702         if ( bbox.x0 >= bbox.x1 ) {
 703             if ( shape->fill_shp->leftX < shape->fill_shp->rightX ) {
 704                 bbox.x0=shape->fill_shp->leftX;
 705                 bbox.x1=shape->fill_shp->rightX;
 706             }
 707         } else {
 708             if ( shape->fill_shp->leftX < bbox.x0 ) bbox.x0=shape->fill_shp->leftX;
 709             if ( shape->fill_shp->rightX > bbox.x1 ) bbox.x1=shape->fill_shp->rightX;
 710         }
 711         if ( bbox.y0 >= bbox.y1 ) {
 712             if ( shape->fill_shp->topY < shape->fill_shp->bottomY ) {
 713                 bbox.y0=shape->fill_shp->topY;
 714                 bbox.y1=shape->fill_shp->bottomY;
 715             }
 716         } else {
 717             if ( shape->fill_shp->topY < bbox.y0 ) bbox.y0=shape->fill_shp->topY;
 718             if ( shape->fill_shp->bottomY > bbox.y1 ) bbox.y1=shape->fill_shp->bottomY;
 719         }
 720     }
 721 }
 722
 723 /**
 724  * Renders the item.  Markers are just composed into the parent buffer.
 725  */
 726 static unsigned int
 727 nr_arena_shape_render(NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags)
 728 {
 729     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 730
 731     if (!shape->curve) return item->state;
 732     if (!shape->style) return item->state;
 733
 734     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == RENDERMODE_OUTLINE);
 735
 736     if (outline) { // fixme: if no problems reported, remove old outline stuff
 737         NRPixBlock m;
 738         int width = area->x1 - area->x0;
 739         int height = area->y1 - area->y0;
 740
 741         //known bug: buffer for cairo must have stride divisible by 4, even though this is a one-byte-per-pixel mode
 742         int rem = width % 4;
 743         int x1 = area->x1;
 744         if (rem != 0) {
 745             width += (4 - rem);
 746             x1 = area->x0 + width;
 747         }
 748
 749         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, x1, area->y1, TRUE);
 750         m.visible_area = pb->visible_area;
 751         m.empty = FALSE;
 752
 753         cairo_surface_t* cst = cairo_image_surface_create_for_data
 754             (NR_PIXBLOCK_PX(&m),
 755              CAIRO_FORMAT_A8,
 756              width,
 757              height,
 758              m.rs);
 759         cairo_t *ct = cairo_create (cst);
 760         cairo_set_source_rgba(ct, 0, 0, 0, 1.0);
 761         cairo_set_line_width(ct, 0.5);
 762         cairo_set_miter_limit(ct, 0.0);
 763         cairo_set_tolerance(ct, 1.25); // low quality, but good enough for outline mode
 764         cairo_new_path(ct);
 765
 766         NR::Matrix trans(shape->ctm);
 767         NR::Point lastX(0,0);
 768         bool  closed = false;
 769         NArtBpath *bpath = SP_CURVE_BPATH(shape->curve);
 770         for (int i = 0; bpath[i].code != NR_END; i++) {
 771             switch (bpath[i].code) {
 772                 case NR_MOVETO_OPEN:
 773                 case NR_MOVETO:
 774                     if (closed) cairo_close_path(ct);
 775                     closed = (bpath[i].code == NR_MOVETO);
 776                     lastX[NR::X] = bpath[i].x3;
 777                     lastX[NR::Y] = bpath[i].y3;
 778                     lastX*=trans;
 779                     lastX -= NR::Point(area->x0, area->y0);
 780                     cairo_move_to(ct, lastX[NR::X], lastX[NR::Y]);
 781                     break;
 782
 783                 case NR_LINETO:
 784                     lastX[NR::X] = bpath[i].x3;
 785                     lastX[NR::Y] = bpath[i].y3;
 786                     lastX*=trans;
 787                     lastX -= NR::Point(area->x0, area->y0);
 788                     cairo_line_to(ct, lastX[NR::X], lastX[NR::Y]);
 789                     break;
 790
 791                 case NR_CURVETO: {
 792                     NR::Point  tm1, tm2, tm3;
 793                     tm1[0]=bpath[i].x1;
 794                     tm1[1]=bpath[i].y1;
 795                     tm2[0]=bpath[i].x2;
 796                     tm2[1]=bpath[i].y2;
 797                     tm3[0]=bpath[i].x3;
 798                     tm3[1]=bpath[i].y3;
 799                     tm1*=trans;
 800                     tm2*=trans;
 801                     tm3*=trans;
 802                     tm1 -= NR::Point(area->x0, area->y0);
 803                     tm2 -= NR::Point(area->x0, area->y0);
 804                     tm3 -= NR::Point(area->x0, area->y0);
 805                     cairo_curve_to (ct, tm1[NR::X], tm1[NR::Y], tm2[NR::X], tm2[NR::Y], tm3[NR::X], tm3[NR::Y]);
 806                     break;
 807                 }
 808
 809                 default:
 810                     break;
 811             }
 812         }
 813
 814         cairo_stroke(ct);
 815
 816         cairo_destroy (ct);
 817         cairo_surface_finish (cst);
 818
 819         guint32 rgba = NR_ARENA_ITEM(shape)->arena->outlinecolor;
 820         nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 821         pb->empty = FALSE;
 822
 823         cairo_surface_destroy (cst);
 824
 825         nr_pixblock_release(&m);
 826
 827         return item->state;
 828     }
 829
 830     if ( shape->delayed_shp ) {
 831         if ( nr_rect_l_test_intersect(area, &item->bbox) ) {
 832             NRGC   tempGC(NULL);
 833             tempGC.transform=shape->ctm;
 834             shape->delayed_shp = false;
 835             nr_arena_shape_update_stroke(shape,&tempGC,&pb->visible_area);
 836             nr_arena_shape_update_fill(shape,&tempGC,&pb->visible_area);
 837 /*      NRRect bbox;
 838         bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 839         nr_arena_shape_add_bboxes(shape,bbox);
 840         item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 841         item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 842         item->bbox.x1 = (gint32)(bbox.x1 + 1.0F);
 843         item->bbox.y1 = (gint32)(bbox.y1 + 1.0F);
 844         shape->approx_bbox=item->bbox;*/
 845         } else {
 846             return item->state;
 847         }
 848     }
 849
 850     SPStyle const *style = shape->style;
 851     if ( shape->fill_shp && !outline) {
 852         NRPixBlock m;
 853         guint32 rgba;
 854
 855         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 856
 857         // if memory allocation failed, abort render
 858         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 859             nr_pixblock_release (&m);
 860             return (item->state);
 861         }
 862
 863         m.visible_area = pb->visible_area;
 864         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
 865         m.empty = FALSE;
 866
 867         if (shape->_fill.paint.type() == NRArenaShape::Paint::NONE) {
 868             // do not render fill in any way
 869         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::COLOR) {
 870             if ( item->render_opacity ) {
 871                 rgba = sp_color_get_rgba32_falpha(&shape->_fill.paint.color(),
 872                                                   shape->_fill.opacity *
 873                                                   SP_SCALE24_TO_FLOAT(style->opacity.value));
 874             } else {
 875                 rgba = sp_color_get_rgba32_falpha(&shape->_fill.paint.color(),
 876                                                   shape->_fill.opacity);
 877             }
 878             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 879             pb->empty = FALSE;
 880         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::SERVER) {
 881             if (shape->fill_painter) {
 882                 nr_arena_render_paintserver_fill(pb, area, shape->fill_painter, shape->_fill.opacity, &m);
 883             }
 884         }
 885
 886         nr_pixblock_release(&m);
 887     }
 888
 889     if ( shape->stroke_shp ) {
 890         NRPixBlock m;
 891         guint32 rgba;
 892
 893         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 894
 895         // if memory allocation failed, abort render
 896         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 897             nr_pixblock_release (&m);
 898             return (item->state);
 899         }
 900
 901         m.visible_area = pb->visible_area;
 902         nr_pixblock_render_shape_mask_or(m, shape->stroke_shp);
 903         m.empty = FALSE;
 904
 905         if (shape->_stroke.paint.type() == NRArenaShape::Paint::COLOR || outline) {
 906             if (outline) {
 907                 rgba = NR_ARENA_ITEM(shape)->arena->outlinecolor;
 908             } else if ( item->render_opacity ) {
 909                 rgba = sp_color_get_rgba32_falpha(&shape->_stroke.paint.color(),
 910                                                   shape->_stroke.opacity *
 911                                                   SP_SCALE24_TO_FLOAT(style->opacity.value));
 912             } else {
 913                 rgba = sp_color_get_rgba32_falpha(&shape->_stroke.paint.color(),
 914                                                   shape->_stroke.opacity);
 915             }
 916             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 917             pb->empty = FALSE;
 918         } else if (shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER) {
 919             if (shape->stroke_painter) {
 920                 nr_arena_render_paintserver_fill(pb, area, shape->stroke_painter, shape->_stroke.opacity, &m);
 921             }
 922         }
 923
 924         nr_pixblock_release(&m);
 925     }
 926
 927     /* Just compose children into parent buffer */
 928     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 929         unsigned int ret;
 930         ret = nr_arena_item_invoke_render(child, area, pb, flags);
 931         if (ret & NR_ARENA_ITEM_STATE_INVALID) return ret;
 932     }
 933
 934     return item->state;
 935 }
 936
 937 static guint
 938 nr_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 939 {
 940     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 941     if (!shape->curve) return item->state;
 942
 943     if ( shape->delayed_shp || shape->fill_shp == NULL) { // we need a fill shape no matter what
 944         if ( nr_rect_l_test_intersect(area, &item->bbox) ) {
 945             NRGC   tempGC(NULL);
 946             tempGC.transform=shape->ctm;
 947             shape->delayed_shp = false;
 948             nr_arena_shape_update_fill(shape, &tempGC, &pb->visible_area, true);
 949         } else {
 950             return item->state;
 951         }
 952     }
 953
 954     if ( shape->fill_shp ) {
 955         NRPixBlock m;
 956
 957         /* fixme: We can OR in one step (Lauris) */
 958         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 959
 960         // if memory allocation failed, abort
 961         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 962             nr_pixblock_release (&m);
 963             return (item->state);
 964         }
 965
 966         m.visible_area = pb->visible_area;
 967         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
 968
 969         for (int y = area->y0; y < area->y1; y++) {
 970             unsigned char *s, *d;
 971             s = NR_PIXBLOCK_PX(&m) + (y - area->y0) * m.rs;
 972             d = NR_PIXBLOCK_PX(pb) + (y - area->y0) * pb->rs;
 973             for (int x = area->x0; x < area->x1; x++) {
 974                 *d = NR_COMPOSEA_111(*s, *d);
 975                 d ++;
 976                 s ++;
 977             }
 978         }
 979         nr_pixblock_release(&m);
 980         pb->empty = FALSE;
 981     }
 982
 983     return item->state;
 984 }
 985
 986 static NRArenaItem *
 987 nr_arena_shape_pick(NRArenaItem *item, NR::Point p, double delta, unsigned int /*sticky*/)
 988 {
 989     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 990
 991     if (!shape->curve) return NULL;
 992     if (!shape->style) return NULL;
 993     if ( shape->delayed_shp ) {
 994         NRRectL  area, updateArea;
 995         area.x0=(int)floor(p[NR::X]);
 996         area.x1=(int)ceil(p[NR::X]);
 997         area.y0=(int)floor(p[NR::Y]);
 998         area.y1=(int)ceil(p[NR::Y]);
 999         int idelta = (int)ceil(delta) + 1;
1000         // njh: inset rect
1001         area.x0-=idelta;
1002         area.x1+=idelta;
1003         area.y0-=idelta;
1004         area.y1+=idelta;
1005         if ( nr_rect_l_test_intersect(&area, &item->bbox) ) {
1006             NRGC   tempGC(NULL);
1007             tempGC.transform=shape->ctm;
1008             updateArea = item->bbox;
1009             if (shape->cached_stroke)
1010                 nr_rect_l_intersect (&updateArea, &updateArea, &shape->cached_sarea);
1011
1012             shape->delayed_shp = false;
1013             nr_arena_shape_update_stroke(shape, &tempGC, &updateArea);
1014             nr_arena_shape_update_fill(shape, &tempGC, &updateArea);
1015             /*      NRRect bbox;
1016                     bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
1017                     nr_arena_shape_add_bboxes(shape,bbox);
1018                     item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
1019                     item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
1020                     item->bbox.x1 = (gint32)(bbox.x1 + 1.0F);
1021                     item->bbox.y1 = (gint32)(bbox.y1 + 1.0F);
1022                     shape->approx_bbox=item->bbox;*/
1023         }
1024     }
1025
1026     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == RENDERMODE_OUTLINE);
1027
1028     if (item->state & NR_ARENA_ITEM_STATE_RENDER) {
1029         if (shape->fill_shp && (shape->_fill.paint.type() != NRArenaShape::Paint::NONE)) {
1030             if (shape->fill_shp->PtWinding(p) > 0 ) return item;
1031         }
1032         if (shape->stroke_shp && (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE || outline)) {
1033             if (shape->stroke_shp->PtWinding(p) > 0 ) return item;
1034         }
1035         if (delta > 1e-3) {
1036             if (shape->fill_shp && (shape->_fill.paint.type() != NRArenaShape::Paint::NONE)) {
1037                 if (distanceLessThanOrEqual(shape->fill_shp, p, delta)) return item;
1038             }
1039             if (shape->stroke_shp && (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE || outline)) {
1040                 if (distanceLessThanOrEqual(shape->stroke_shp, p, delta)) return item;
1041             }
1042         }
1043     } else {
1044         NRBPath bp;
1045         bp.path = SP_CURVE_BPATH(shape->curve);
1046         double dist = NR_HUGE;
1047         int wind = 0;
1048         nr_path_matrix_point_bbox_wind_distance(&bp, shape->ctm, p, NULL, &wind, &dist, NR_EPSILON);
1049         if (shape->_fill.paint.type() != NRArenaShape::Paint::NONE) {
1050             if (!shape->style->fill_rule.computed) {
1051                 if (wind != 0) return item;
1052             } else {
1053                 if (wind & 0x1) return item;
1054             }
1055         }
1056         if (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE || outline) {
1057             /* fixme: We do not take stroke width into account here (Lauris) */
1058             if (dist < delta) return item;
1059         }
1060     }
1061
1062     return NULL;
1063 }
1064
1065 /**
1066  *
1067  *  Requests a render of the shape, then if the shape is already a curve it
1068  *  unrefs the old curve; if the new curve is valid it creates a copy of the
1069  *  curve and adds it to the shape.  Finally, it requests an update of the
1070  *  arena for the shape.
1071  */
1072 void nr_arena_shape_set_path(NRArenaShape *shape, SPCurve *curve,bool justTrans)
1073 {
1074     g_return_if_fail(shape != NULL);
1075     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1076
1077     if ( justTrans == false ) {
1078         // dirty cached versions
1079         if ( shape->cached_fill ) {
1080             delete shape->cached_fill;
1081             shape->cached_fill=NULL;
1082         }
1083         if ( shape->cached_stroke ) {
1084             delete shape->cached_stroke;
1085             shape->cached_stroke=NULL;
1086         }
1087     }
1088
1089     nr_arena_item_request_render(NR_ARENA_ITEM(shape));
1090
1091     if (shape->curve) {
1092         sp_curve_unref(shape->curve);
1093         shape->curve = NULL;
1094     }
1095
1096     if (curve) {
1097         shape->curve = curve;
1098         sp_curve_ref(curve);
1099     }
1100
1101     nr_arena_item_request_update(NR_ARENA_ITEM(shape), NR_ARENA_ITEM_STATE_ALL, FALSE);
1102 }
1103
1104 void NRArenaShape::setFill(SPPaintServer *server) {
1105     _fill.paint.set(server);
1106     _invalidateCachedFill();
1107 }
1108
1109 void NRArenaShape::setFill(SPColor const &color) {
1110     _fill.paint.set(color);
1111     _invalidateCachedFill();
1112 }
1113
1114 void NRArenaShape::setFillOpacity(double opacity) {
1115     _fill.opacity = opacity;
1116     _invalidateCachedFill();
1117 }
1118
1119 void NRArenaShape::setFillRule(NRArenaShape::FillRule rule) {
1120     _fill.rule = rule;
1121     _invalidateCachedFill();
1122 }
1123
1124 void NRArenaShape::setStroke(SPPaintServer *server) {
1125     _stroke.paint.set(server);
1126     _invalidateCachedStroke();
1127 }
1128
1129 void NRArenaShape::setStroke(SPColor const &color) {
1130     _stroke.paint.set(color);
1131     _invalidateCachedStroke();
1132 }
1133
1134 void NRArenaShape::setStrokeOpacity(double opacity) {
1135     _stroke.opacity = opacity;
1136     _invalidateCachedStroke();
1137 }
1138
1139 void NRArenaShape::setStrokeWidth(double width) {
1140     _stroke.width = width;
1141     _invalidateCachedStroke();
1142 }
1143
1144 void NRArenaShape::setMitreLimit(double limit) {
1145     _stroke.mitre_limit = limit;
1146     _invalidateCachedStroke();
1147 }
1148
1149 void NRArenaShape::setLineCap(NRArenaShape::CapType cap) {
1150     _stroke.cap = cap;
1151     _invalidateCachedStroke();
1152 }
1153
1154 void NRArenaShape::setLineJoin(NRArenaShape::JoinType join) {
1155     _stroke.join = join;
1156     _invalidateCachedStroke();
1157 }
1158
1159 /** nr_arena_shape_set_style
1160  *
1161  * Unrefs any existing style and ref's to the given one, then requests an update of the arena
1162  */
1163 void
1164 nr_arena_shape_set_style(NRArenaShape *shape, SPStyle *style)
1165 {
1166     g_return_if_fail(shape != NULL);
1167     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1168
1169     if (style) sp_style_ref(style);
1170     if (shape->style) sp_style_unref(shape->style);
1171     shape->style = style;
1172
1173     switch (style->fill.type) {
1174         case SP_PAINT_TYPE_NONE: {
1175             shape->setFill(NULL);
1176             break;
1177         }
1178         case SP_PAINT_TYPE_COLOR: {
1179             shape->setFill(style->fill.value.color);
1180             break;
1181         }
1182         case SP_PAINT_TYPE_PAINTSERVER: {
1183             shape->setFill(style->fill.value.paint.server);
1184             break;
1185         }
1186         default: {
1187             g_assert_not_reached();
1188         }
1189     }
1190     shape->setFillOpacity(SP_SCALE24_TO_FLOAT(style->fill_opacity.value));
1191     switch (style->fill_rule.computed) {
1192         case SP_WIND_RULE_EVENODD: {
1193             shape->setFillRule(NRArenaShape::EVEN_ODD);
1194             break;
1195         }
1196         case SP_WIND_RULE_NONZERO: {
1197             shape->setFillRule(NRArenaShape::NONZERO);
1198             break;
1199         }
1200         default: {
1201             g_assert_not_reached();
1202         }
1203     }
1204
1205     switch (style->stroke.type) {
1206         case SP_PAINT_TYPE_NONE: {
1207             shape->setStroke(NULL);
1208             break;
1209         }
1210         case SP_PAINT_TYPE_COLOR: {
1211             shape->setStroke(style->stroke.value.color);
1212             break;
1213         }
1214         case SP_PAINT_TYPE_PAINTSERVER: {
1215             shape->setStroke(style->stroke.value.paint.server);
1216             break;
1217         }
1218         default: {
1219             g_assert_not_reached();
1220         }
1221     }
1222     shape->setStrokeWidth(style->stroke_width.computed);
1223     shape->setStrokeOpacity(SP_SCALE24_TO_FLOAT(style->stroke_opacity.value));
1224     switch (style->stroke_linecap.computed) {
1225         case SP_STROKE_LINECAP_ROUND: {
1226             shape->setLineCap(NRArenaShape::ROUND_CAP);
1227             break;
1228         }
1229         case SP_STROKE_LINECAP_SQUARE: {
1230             shape->setLineCap(NRArenaShape::SQUARE_CAP);
1231             break;
1232         }
1233         case SP_STROKE_LINECAP_BUTT: {
1234             shape->setLineCap(NRArenaShape::BUTT_CAP);
1235             break;
1236         }
1237         default: {
1238             g_assert_not_reached();
1239         }
1240     }
1241     switch (style->stroke_linejoin.computed) {
1242         case SP_STROKE_LINEJOIN_ROUND: {
1243             shape->setLineJoin(NRArenaShape::ROUND_JOIN);
1244             break;
1245         }
1246         case SP_STROKE_LINEJOIN_BEVEL: {
1247             shape->setLineJoin(NRArenaShape::BEVEL_JOIN);
1248             break;
1249         }
1250         case SP_STROKE_LINEJOIN_MITER: {
1251             shape->setLineJoin(NRArenaShape::MITRE_JOIN);
1252             break;
1253         }
1254         default: {
1255             g_assert_not_reached();
1256         }
1257     }
1258     shape->setMitreLimit(style->stroke_miterlimit.value);
1259
1260     //if shape has a filter
1261     if (style->filter.set && style->filter.filter)
1262     {
1263         shape->filter = new NR::Filter();
1264         shape->filter->set_x(style->filter.filter->x);
1265         shape->filter->set_y(style->filter.filter->y);
1266         shape->filter->set_width(style->filter.filter->width);
1267         shape->filter->set_height(style->filter.filter->height);
1268
1269         //go through all SP filter primitives
1270         for(int i=0; i<style->filter.filter->_primitive_count; i++)
1271         {
1272             SPFilterPrimitive *primitive = style->filter.filter->_primitives[i];
1273             //if primitive is gaussianblur
1274             if(SP_IS_GAUSSIANBLUR(primitive)) {
1275                 NR::FilterGaussian * gaussian = (NR::FilterGaussian *) shape->filter->add_primitive(NR::NR_FILTER_GAUSSIANBLUR);
1276                 SPGaussianBlur * spblur = SP_GAUSSIANBLUR(primitive);
1277                 float num = spblur->stdDeviation.getNumber();
1278                 if( num>=0.0 )
1279                 {
1280                     float optnum = spblur->stdDeviation.getOptNumber();
1281                     if( optnum>=0.0 )
1282                         gaussian->set_deviation((double) num, (double) optnum);
1283                     else
1284                         gaussian->set_deviation((double) num);
1285                 }
1286             }
1287         }
1288     }
1289     else
1290     {
1291         //no filter set for this shape
1292         shape->filter = NULL;
1293     }
1294
1295     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1296 }
1297
1298 void
1299 nr_arena_shape_set_paintbox(NRArenaShape *shape, NRRect const *pbox)
1300 {
1301     g_return_if_fail(shape != NULL);
1302     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1303     g_return_if_fail(pbox != NULL);
1304
1305     if ((pbox->x0 < pbox->x1) && (pbox->y0 < pbox->y1)) {
1306         shape->paintbox = *pbox;
1307     } else {
1308         /* fixme: We kill warning, although not sure what to do here (Lauris) */
1309         shape->paintbox.x0 = shape->paintbox.y0 = 0.0F;
1310         shape->paintbox.x1 = shape->paintbox.y1 = 256.0F;
1311     }
1312
1313     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1314 }
1315
1316 void NRArenaShape::setPaintBox(NR::Rect const &pbox)
1317 {
1318     paintbox.x0 = pbox.min()[NR::X];
1319     paintbox.y0 = pbox.min()[NR::Y];
1320     paintbox.x1 = pbox.max()[NR::X];
1321     paintbox.y1 = pbox.max()[NR::Y];
1322
1323     nr_arena_item_request_update(this, NR_ARENA_ITEM_STATE_ALL, FALSE);
1324 }
1325
1326 static void
1327 shape_run_A8_OR(raster_info &dest,void */*data*/,int st,float vst,int en,float ven)
1328 {
1329     if ( st >= en ) return;
1330     if ( vst < 0 ) vst=0;
1331     if ( vst > 1 ) vst=1;
1332     if ( ven < 0 ) ven=0;
1333     if ( ven > 1 ) ven=1;
1334     float   sv=vst;
1335     float   dv=ven-vst;
1336     int     len=en-st;
1337     unsigned char*   d=(unsigned char*)dest.buffer;
1338     d+=(st-dest.startPix);
1339     if ( fabs(dv) < 0.001 ) {
1340         if ( vst > 0.999 ) {
1341             /* Simple copy */
1342             while (len > 0) {
1343                 d[0] = 255;
1344                 d += 1;
1345                 len -= 1;
1346             }
1347         } else {
1348             sv*=256;
1349             unsigned int c0_24=(int)sv;
1350             c0_24&=0xFF;
1351             while (len > 0) {
1352                 /* Draw */
1353                 d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1354                 d += 1;
1355                 len -= 1;
1356             }
1357         }
1358     } else {
1359         if ( en <= st+1 ) {
1360             sv=0.5*(vst+ven);
1361             sv*=256;
1362             unsigned int c0_24=(int)sv;
1363             c0_24&=0xFF;
1364             /* Draw */
1365             d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1366         } else {
1367             dv/=len;
1368             sv+=0.5*dv; // correction trapezoidale
1369             sv*=16777216;
1370             dv*=16777216;
1371             int c0_24 = static_cast<int>(CLAMP(sv, 0, 16777216));
1372             int s0_24 = static_cast<int>(dv);
1373             while (len > 0) {
1374                 unsigned int ca;
1375                 /* Draw */
1376                 ca = c0_24 >> 16;
1377                 if ( ca > 255 ) ca=255;
1378                 d[0] = NR_COMPOSEA_111(ca,d[0]);
1379                 d += 1;
1380                 c0_24 += s0_24;
1381                 c0_24 = CLAMP(c0_24, 0, 16777216);
1382                 len -= 1;
1383             }
1384         }
1385     }
1386 }
1387
1388 void nr_pixblock_render_shape_mask_or(NRPixBlock &m,Shape* theS)
1389 {
1390     theS->CalcBBox();
1391     float l = theS->leftX, r = theS->rightX, t = theS->topY, b = theS->bottomY;
1392     int    il,ir,it,ib;
1393     il=(int)floor(l);
1394     ir=(int)ceil(r);
1395     it=(int)floor(t);
1396     ib=(int)ceil(b);
1397
1398     if ( il >= m.area.x1 || ir <= m.area.x0 || it >= m.area.y1 || ib <= m.area.y0 ) return;
1399     if ( il < m.area.x0 ) il=m.area.x0;
1400     if ( it < m.area.y0 ) it=m.area.y0;
1401     if ( ir > m.area.x1 ) ir=m.area.x1;
1402     if ( ib > m.area.y1 ) ib=m.area.y1;
1403
1404     /* This is the FloatLigne version.  See svn (prior to Apr 2006) for versions using BitLigne or direct BitLigne. */
1405     int    curPt;
1406     float  curY;
1407     theS->BeginQuickRaster(curY, curPt);
1408
1409     FloatLigne *theI = new FloatLigne();
1410     IntLigne *theIL = new IntLigne();
1411
1412     theS->DirectQuickScan(curY, curPt, (float) it, true, 1.0);
1413
1414     char *mdata = (char*)m.data.px;
1415     if ( m.size == NR_PIXBLOCK_SIZE_TINY ) mdata=(char*)m.data.p;
1416     uint32_t *ligStart = ((uint32_t*)(mdata + ((il - m.area.x0) + m.rs * (it - m.area.y0))));
1417     for (int y = it; y < ib; y++) {
1418         theI->Reset();
1419         theS->QuickScan(curY, curPt, ((float)(y+1)), theI, 1.0);
1420         theI->Flatten();
1421         theIL->Copy(theI);
1422
1423         raster_info  dest;
1424         dest.startPix=il;
1425         dest.endPix=ir;
1426         dest.sth=il;
1427         dest.stv=y;
1428         dest.buffer=ligStart;
1429         theIL->Raster(dest, NULL, shape_run_A8_OR);
1430         ligStart=((uint32_t*)(((char*)ligStart)+m.rs));
1431     }
1432     theS->EndQuickRaster();
1433     delete theI;
1434     delete theIL;
1435 }
1436
1437
1438 /*
1439   Local Variables:
1440   mode:c++
1441   c-file-style:"stroustrup"
1442   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1443   indent-tabs-mode:nil
1444   fill-column:99
1445   End:
1446 */
1447 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :