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 #include <2geom/svg-path.h>
  16 #include <2geom/svg-path-parser.h>
  17 #include <display/canvas-arena.h>
  18 #include <display/nr-arena.h>
  19 #include <display/nr-arena-shape.h>
  20 #include "display/curve.h"
  21 #include <libnr/nr-pixops.h>
  22 #include <libnr/nr-matrix-ops.h>
  23 #include <libnr/nr-matrix-fns.h>
  24 #include <libnr/nr-blit.h>
  25 #include <libnr/nr-convert2geom.h>
  26 #include <2geom/pathvector.h>
  27 #include <2geom/curves.h>
  28 #include <livarot/Path.h>
  29 #include <livarot/float-line.h>
  30 #include <livarot/int-line.h>
  31 #include <style.h>
  32 #include "inkscape-cairo.h"
  33 #include "helper/geom.h"
  34 #include "helper/geom-curves.h"
  35 #include "sp-filter.h"
  36 #include "sp-filter-reference.h"
  37 #include "display/nr-filter.h"
  38 #include <typeinfo>
  39 #include <cairo.h>
  40
  41 #include <glib.h>
  42 #include "svg/svg.h"
  43 #include <fenv.h>
  44
  45 //int  showRuns=0;
  46 void nr_pixblock_render_shape_mask_or(NRPixBlock &m,Shape* theS);
  47
  48 static void nr_arena_shape_class_init(NRArenaShapeClass *klass);
  49 static void nr_arena_shape_init(NRArenaShape *shape);
  50 static void nr_arena_shape_finalize(NRObject *object);
  51
  52 static NRArenaItem *nr_arena_shape_children(NRArenaItem *item);
  53 static void nr_arena_shape_add_child(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
  54 static void nr_arena_shape_remove_child(NRArenaItem *item, NRArenaItem *child);
  55 static void nr_arena_shape_set_child_position(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
  56
  57 static guint nr_arena_shape_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
  58 static unsigned int nr_arena_shape_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);
  59 static guint nr_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
  60 static NRArenaItem *nr_arena_shape_pick(NRArenaItem *item, Geom::Point p, double delta, unsigned int sticky);
  61
  62 static NRArenaItemClass *shape_parent_class;
  63
  64 NRType
  65 nr_arena_shape_get_type(void)
  66 {
  67     static NRType type = 0;
  68     if (!type) {
  69         type = nr_object_register_type(NR_TYPE_ARENA_ITEM,
  70                                        "NRArenaShape",
  71                                        sizeof(NRArenaShapeClass),
  72                                        sizeof(NRArenaShape),
  73                                        (void (*)(NRObjectClass *)) nr_arena_shape_class_init,
  74                                        (void (*)(NRObject *)) nr_arena_shape_init);
  75     }
  76     return type;
  77 }
  78
  79 static void
  80 nr_arena_shape_class_init(NRArenaShapeClass *klass)
  81 {
  82     NRObjectClass *object_class;
  83     NRArenaItemClass *item_class;
  84
  85     object_class = (NRObjectClass *) klass;
  86     item_class = (NRArenaItemClass *) klass;
  87
  88     shape_parent_class = (NRArenaItemClass *)  ((NRObjectClass *) klass)->parent;
  89
  90     object_class->finalize = nr_arena_shape_finalize;
  91     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaShape>;
  92
  93     item_class->children = nr_arena_shape_children;
  94     item_class->add_child = nr_arena_shape_add_child;
  95     item_class->set_child_position = nr_arena_shape_set_child_position;
  96     item_class->remove_child = nr_arena_shape_remove_child;
  97     item_class->update = nr_arena_shape_update;
  98     item_class->render = nr_arena_shape_render;
  99     item_class->clip = nr_arena_shape_clip;
 100     item_class->pick = nr_arena_shape_pick;
 101 }
 102
 103 /**
 104  * Initializes the arena shape, setting all parameters to null, 0, false,
 105  * or other defaults
 106  */
 107 static void
 108 nr_arena_shape_init(NRArenaShape *shape)
 109 {
 110     shape->curve = NULL;
 111     shape->style = NULL;
 112     shape->paintbox.x0 = shape->paintbox.y0 = 0.0F;
 113     shape->paintbox.x1 = shape->paintbox.y1 = 256.0F;
 114
 115     shape->ctm.setIdentity();
 116     shape->fill_painter = NULL;
 117     shape->stroke_painter = NULL;
 118     shape->cached_fill = NULL;
 119     shape->cached_stroke = NULL;
 120     shape->cached_fpartialy = false;
 121     shape->cached_spartialy = false;
 122     shape->fill_shp = NULL;
 123     shape->stroke_shp = NULL;
 124
 125     shape->delayed_shp = false;
 126
 127     shape->approx_bbox.x0 = shape->approx_bbox.y0 = 0;
 128     shape->approx_bbox.x1 = shape->approx_bbox.y1 = 0;
 129     shape->cached_fctm.setIdentity();
 130     shape->cached_sctm.setIdentity();
 131
 132     shape->markers = NULL;
 133
 134     shape->last_pick = NULL;
 135     shape->repick_after = 0;
 136 }
 137
 138 static void
 139 nr_arena_shape_finalize(NRObject *object)
 140 {
 141     NRArenaShape *shape = (NRArenaShape *) object;
 142
 143     if (shape->fill_shp) delete shape->fill_shp;
 144     if (shape->stroke_shp) delete shape->stroke_shp;
 145     if (shape->cached_fill) delete shape->cached_fill;
 146     if (shape->cached_stroke) delete shape->cached_stroke;
 147     if (shape->fill_painter) sp_painter_free(shape->fill_painter);
 148     if (shape->stroke_painter) sp_painter_free(shape->stroke_painter);
 149
 150     if (shape->style) sp_style_unref(shape->style);
 151     if (shape->curve) shape->curve->unref();
 152
 153     ((NRObjectClass *) shape_parent_class)->finalize(object);
 154 }
 155
 156 /**
 157  * Retrieves the markers from the item
 158  */
 159 static NRArenaItem *
 160 nr_arena_shape_children(NRArenaItem *item)
 161 {
 162     NRArenaShape *shape = (NRArenaShape *) item;
 163
 164     return shape->markers;
 165 }
 166
 167 /**
 168  * Attaches child to item, and if ref is not NULL, sets it and ref->next as
 169  * the prev and next items.  If ref is NULL, then it sets the item's markers
 170  * as the next items.
 171  */
 172 static void
 173 nr_arena_shape_add_child(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
 174 {
 175     NRArenaShape *shape = (NRArenaShape *) item;
 176
 177     if (!ref) {
 178         shape->markers = nr_arena_item_attach(item, child, NULL, shape->markers);
 179     } else {
 180         ref->next = nr_arena_item_attach(item, child, ref, ref->next);
 181     }
 182
 183     nr_arena_item_request_update(item, NR_ARENA_ITEM_STATE_ALL, FALSE);
 184 }
 185
 186 /**
 187  * Removes child from the shape.  If there are no prev items in
 188  * the child, it sets items' markers to the next item in the child.
 189  */
 190 static void
 191 nr_arena_shape_remove_child(NRArenaItem *item, NRArenaItem *child)
 192 {
 193     NRArenaShape *shape = (NRArenaShape *) item;
 194
 195     if (child->prev) {
 196         nr_arena_item_detach(item, child);
 197     } else {
 198         shape->markers = nr_arena_item_detach(item, child);
 199     }
 200
 201     nr_arena_item_request_update(item, NR_ARENA_ITEM_STATE_ALL, FALSE);
 202 }
 203
 204 /**
 205  * Detaches child from item, and if there are no previous items in child, it
 206  * sets item's markers to the child.  It then attaches the child back onto the item.
 207  * If ref is null, it sets the markers to be the next item, otherwise it uses
 208  * the next/prev items in ref.
 209  */
 210 static void
 211 nr_arena_shape_set_child_position(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
 212 {
 213     NRArenaShape *shape = (NRArenaShape *) item;
 214
 215     if (child->prev) {
 216         nr_arena_item_detach(item, child);
 217     } else {
 218         shape->markers = nr_arena_item_detach(item, child);
 219     }
 220
 221     if (!ref) {
 222         shape->markers = nr_arena_item_attach(item, child, NULL, shape->markers);
 223     } else {
 224         ref->next = nr_arena_item_attach(item, child, ref, ref->next);
 225     }
 226
 227     nr_arena_item_request_render(child);
 228 }
 229
 230 void nr_arena_shape_update_stroke(NRArenaShape *shape, NRGC* gc, NRRectL *area);
 231 void nr_arena_shape_update_fill(NRArenaShape *shape, NRGC *gc, NRRectL *area, bool force_shape = false);
 232 void nr_arena_shape_add_bboxes(NRArenaShape* shape, Geom::Rect &bbox);
 233
 234 /**
 235  * Updates the arena shape 'item' and all of its children, including the markers.
 236  */
 237 static guint
 238 nr_arena_shape_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset)
 239 {
 240     Geom::Rect boundingbox;
 241
 242     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 243
 244     unsigned int beststate = NR_ARENA_ITEM_STATE_ALL;
 245
 246     unsigned int newstate;
 247     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 248         newstate = nr_arena_item_invoke_update(child, area, gc, state, reset);
 249         beststate = beststate & newstate;
 250     }
 251
 252     if (!(state & NR_ARENA_ITEM_STATE_RENDER)) {
 253         /* We do not have to create rendering structures */
 254         shape->ctm = gc->transform;
 255         if (state & NR_ARENA_ITEM_STATE_BBOX) {
 256             if (shape->curve) {
 257                 boundingbox = bounds_exact_transformed(shape->curve->get_pathvector(), gc->transform);
 258                 item->bbox.x0 = (gint32)(boundingbox[0][0] - 1.0F);
 259                 item->bbox.y0 = (gint32)(boundingbox[1][0] - 1.0F);
 260                 item->bbox.x1 = (gint32)(boundingbox[0][1] + 1.9999F);
 261                 item->bbox.y1 = (gint32)(boundingbox[1][1] + 1.9999F);
 262             }
 263             if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 264                 for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 265                     nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 266                 }
 267             }
 268         }
 269         return (state | item->state);
 270     }
 271
 272     shape->delayed_shp=true;
 273     shape->ctm = gc->transform;
 274     boundingbox[0][0] = boundingbox[1][0] = NR_HUGE;
 275     boundingbox[0][1] = boundingbox[1][1] = -NR_HUGE;
 276
 277     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
 278
 279     if (shape->curve) {
 280         boundingbox = bounds_exact_transformed(shape->curve->get_pathvector(), gc->transform);
 281
 282         if (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE || outline) {
 283             float width, scale;
 284             scale = gc->transform.descrim();
 285             width = MAX(0.125, shape->_stroke.width * scale);
 286             if ( fabs(shape->_stroke.width * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
 287                 boundingbox.expandBy(width);
 288             }
 289             // those pesky miters, now
 290             float miterMax=width*shape->_stroke.mitre_limit;
 291             if ( miterMax > 0.01 ) {
 292                 // grunt mode. we should compute the various miters instead (one for each point on the curve)
 293                 boundingbox.expandBy(miterMax);
 294             }
 295         }
 296     } else {
 297     }
 298     shape->approx_bbox.x0 = (gint32)(boundingbox[0][0] - 1.0F);
 299     shape->approx_bbox.y0 = (gint32)(boundingbox[1][0] - 1.0F);
 300     shape->approx_bbox.x1 = (gint32)(boundingbox[0][1] + 1.9999F);
 301     shape->approx_bbox.y1 = (gint32)(boundingbox[1][1] + 1.9999F);
 302     if ( area && nr_rect_l_test_intersect_ptr(area, &shape->approx_bbox) ) shape->delayed_shp=false;
 303
 304     /* Release state data */
 305     if (TRUE || !Geom::transform_equalp(gc->transform, shape->ctm, NR_EPSILON)) {
 306         /* Concept test */
 307         if (shape->fill_shp) {
 308             delete shape->fill_shp;
 309             shape->fill_shp = NULL;
 310         }
 311     }
 312     if (shape->stroke_shp) {
 313         delete shape->stroke_shp;
 314         shape->stroke_shp = NULL;
 315     }
 316     if (shape->fill_painter) {
 317         sp_painter_free(shape->fill_painter);
 318         shape->fill_painter = NULL;
 319     }
 320     if (shape->stroke_painter) {
 321         sp_painter_free(shape->stroke_painter);
 322         shape->stroke_painter = NULL;
 323     }
 324
 325     if (!shape->curve ||
 326         !shape->style ||
 327         shape->curve->is_empty() ||
 328         (( shape->_fill.paint.type() == NRArenaShape::Paint::NONE ) &&
 329          ( shape->_stroke.paint.type() == NRArenaShape::Paint::NONE && !outline) ))
 330     {
 331         item->bbox = shape->approx_bbox;
 332         return NR_ARENA_ITEM_STATE_ALL;
 333     }
 334
 335     /* Build state data */
 336     if ( shape->delayed_shp ) {
 337         item->bbox=shape->approx_bbox;
 338     } else {
 339         nr_arena_shape_update_stroke(shape, gc, area);
 340         nr_arena_shape_update_fill(shape, gc, area);
 341
 342         boundingbox[0][0] = boundingbox[0][1] = boundingbox[1][0] = boundingbox[1][1] = 0.0;
 343         nr_arena_shape_add_bboxes(shape, boundingbox);
 344
 345         shape->approx_bbox.x0 = (gint32)(boundingbox[0][0] - 1.0F);
 346         shape->approx_bbox.y0 = (gint32)(boundingbox[1][0] - 1.0F);
 347         shape->approx_bbox.x1 = (gint32)(boundingbox[0][1] + 1.9999F);
 348         shape->approx_bbox.y1 = (gint32)(boundingbox[1][1] + 1.9999F);
 349     }
 350
 351     if (boundingbox.isEmpty())
 352         return NR_ARENA_ITEM_STATE_ALL;
 353
 354     item->bbox.x0 = (gint32)(boundingbox[0][0] - 1.0F);
 355     item->bbox.y0 = (gint32)(boundingbox[1][0] - 1.0F);
 356     item->bbox.x1 = (gint32)(boundingbox[0][1] + 1.0F);
 357     item->bbox.y1 = (gint32)(boundingbox[1][1] + 1.0F);
 358     nr_arena_request_render_rect(item->arena, &item->bbox);
 359
 360     item->render_opacity = TRUE;
 361     if ( shape->_fill.paint.type() == NRArenaShape::Paint::SERVER ) {
 362         if (gc && gc->parent) {
 363             shape->fill_painter = sp_paint_server_painter_new(shape->_fill.paint.server(),
 364                                                               gc->transform, gc->parent->transform,
 365                                                               &shape->paintbox);
 366         }
 367         item->render_opacity = FALSE;
 368     }
 369     if ( shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER ) {
 370         if (gc && gc->parent) {
 371             shape->stroke_painter = sp_paint_server_painter_new(shape->_stroke.paint.server(),
 372                                                                 gc->transform, gc->parent->transform,
 373                                                                 &shape->paintbox);
 374         }
 375         item->render_opacity = FALSE;
 376     }
 377     if (  (shape->_fill.paint.type() != NRArenaShape::Paint::NONE &&
 378            shape->_stroke.paint.type() != NRArenaShape::Paint::NONE)
 379           || (shape->markers)
 380         )
 381     {
 382         // don't merge item opacity with paint opacity if there is a stroke on the fill, or markers on stroke
 383         item->render_opacity = FALSE;
 384     }
 385
 386     if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 387         for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 388             nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 389         }
 390     }
 391
 392     return NR_ARENA_ITEM_STATE_ALL;
 393 }
 394
 395 int matrix_is_isometry(Geom::Matrix p) {
 396     Geom::Matrix   tp;
 397     // transposition
 398     tp[0]=p[0];
 399     tp[1]=p[2];
 400     tp[2]=p[1];
 401     tp[3]=p[3];
 402     for (int i = 4; i < 6; i++) // shut valgrind up :)
 403         tp[i] = p[i] = 0;
 404     Geom::Matrix   isom = tp*p; // A^T * A = adjunct?
 405     // Is the adjunct nearly an identity function?
 406     if (isom.isTranslation(0.01)) {
 407         // the transformation is an isometry -> no need to recompute
 408         // the uncrossed polygon
 409         if ( p.det() < 0 )
 410             return -1;
 411         else
 412             return 1;
 413     }
 414     return 0;
 415 }
 416
 417 static bool is_inner_area(NRRectL const &outer, NRRectL const &inner) {
 418     return (outer.x0 <= inner.x0 && outer.y0 <= inner.y0 && outer.x1 >= inner.x1 && outer.y1 >= inner.y1);
 419 }
 420
 421 /* returns true if the pathvector has a region that needs fill.
 422  * is for optimizing purposes, so should be fast and can falsely return true.
 423  * CANNOT falsely return false. */
 424 static bool has_inner_area(Geom::PathVector const & pv) {
 425     // return false for the cases where there is surely no region to be filled
 426     if (pv.empty())
 427         return false;
 428
 429     if ( (pv.size() == 1) && (pv.front().size() <= 1) ) {
 430         // vector has only one path with only one segment, see if that's a non-curve segment: that would mean no internal region
 431         if ( is_straight_curve(pv.front().front()) )
 432         {
 433             return false;
 434         }
 435     }
 436
 437     return true; //too costly to see if it has region to be filled, so return true.
 438 }
 439
 440 /** force_shape is used for clipping paths, when we need the shape for clipping even if it's not filled */
 441 void
 442 nr_arena_shape_update_fill(NRArenaShape *shape, NRGC *gc, NRRectL *area, bool force_shape)
 443 {
 444     if ((shape->_fill.paint.type() != NRArenaShape::Paint::NONE || force_shape) &&
 445 //        ((shape->curve->get_length() > 2) || (SP_CURVE_BPATH(shape->curve)[1].code == NR_CURVETO)) ) {  // <-- this used to be the old code, i think it has to determine that the path has a sort of 'internal region' where fill would occur
 446           has_inner_area(shape->curve->get_pathvector()) ) {
 447         if (TRUE || !shape->fill_shp) {
 448             Geom::Matrix  cached_to_new = Geom::identity();
 449             int isometry = 0;
 450             if ( shape->cached_fill ) {
 451                 if (shape->cached_fctm == gc->transform) {
 452                     isometry = 2; // identity
 453                 } else {
 454                     cached_to_new = shape->cached_fctm.inverse() * gc->transform;
 455                     isometry = matrix_is_isometry(cached_to_new);
 456                 }
 457                 if (0 != isometry && !is_inner_area(shape->cached_farea, *area))
 458                     isometry = 0;
 459             }
 460             if ( isometry == 0 ) {
 461                 if ( shape->cached_fill == NULL ) shape->cached_fill=new Shape;
 462                 shape->cached_fill->Reset();
 463
 464                 Path*  thePath=new Path;
 465                 Shape* theShape=new Shape;
 466                 {
 467                     Geom::Matrix tempMat(gc->transform);
 468                     thePath->LoadPathVector(shape->curve->get_pathvector(), tempMat, true);
 469                 }
 470
 471                 if (is_inner_area(*area, NR_ARENA_ITEM(shape)->bbox)) {
 472                     thePath->Convert(1.0);
 473                     shape->cached_fpartialy = false;
 474                 } else {
 475                     thePath->Convert(area, 1.0);
 476                     shape->cached_fpartialy = true;
 477                 }
 478
 479                 thePath->Fill(theShape, 0);
 480
 481                 if ( shape->_fill.rule == NRArenaShape::EVEN_ODD ) {
 482                     shape->cached_fill->ConvertToShape(theShape, fill_oddEven);
 483                     // alternatively, this speeds up rendering of oddeven shapes but disables AA :(
 484                     //shape->cached_fill->Copy(theShape);
 485                 } else {
 486                     shape->cached_fill->ConvertToShape(theShape, fill_nonZero);
 487                 }
 488                 shape->cached_fctm=gc->transform;
 489                 shape->cached_farea = *area;
 490                 delete theShape;
 491                 delete thePath;
 492                 if ( shape->fill_shp == NULL )
 493                     shape->fill_shp = new Shape;
 494
 495                 shape->fill_shp->Copy(shape->cached_fill);
 496
 497             } else if ( 2 == isometry ) {
 498                 if ( shape->fill_shp == NULL ) {
 499                     shape->fill_shp = new Shape;
 500                     shape->fill_shp->Copy(shape->cached_fill);
 501                 }
 502             } else {
 503
 504                 if ( shape->fill_shp == NULL )
 505                     shape->fill_shp = new Shape;
 506
 507                 shape->fill_shp->Reset(shape->cached_fill->numberOfPoints(),
 508                                        shape->cached_fill->numberOfEdges());
 509                 for (int i = 0; i < shape->cached_fill->numberOfPoints(); i++)
 510                     shape->fill_shp->AddPoint(to_2geom(shape->cached_fill->getPoint(i).x) * cached_to_new);
 511                 if ( isometry == 1 ) {
 512                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 513                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).st,
 514                                                  shape->cached_fill->getEdge(i).en);
 515                 } else if ( isometry == -1 ) { // need to flip poly.
 516                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 517                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).en,
 518                                                  shape->cached_fill->getEdge(i).st);
 519                 }
 520                 shape->fill_shp->ForceToPolygon();
 521                 shape->fill_shp->needPointsSorting();
 522                 shape->fill_shp->needEdgesSorting();
 523             }
 524             shape->delayed_shp |= shape->cached_fpartialy;
 525         }
 526     }
 527 }
 528
 529 void
 530 nr_arena_shape_update_stroke(NRArenaShape *shape,NRGC* gc, NRRectL *area)
 531 {
 532     SPStyle* style = shape->style;
 533
 534     float const scale = gc->transform.descrim();
 535
 536     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
 537
 538     if (outline) {
 539         // cairo does not need the livarot path for rendering
 540         return;
 541     }
 542
 543     // after switching normal stroke rendering to cairo too, optimize this: lower tolerance, disregard dashes
 544     // (since it will only be used for picking, not for rendering)
 545
 546     if (outline ||
 547         ((shape->_stroke.paint.type() != NRArenaShape::Paint::NONE) &&
 548          ( fabs(shape->_stroke.width * scale) > 0.01 ))) { // sinon c'est 0=oon veut pas de bord
 549
 550         float style_width = MAX(0.125, shape->_stroke.width * scale);
 551         float width;
 552         if (outline) {
 553             width = 0.5; // 1 pixel wide, independent of zoom
 554         } else {
 555             width = style_width;
 556         }
 557
 558         Geom::Matrix  cached_to_new = Geom::identity();
 559
 560         int isometry = 0;
 561         if ( shape->cached_stroke ) {
 562             if (shape->cached_sctm == gc->transform) {
 563                 isometry = 2; // identity
 564             } else {
 565                 cached_to_new = shape->cached_sctm.inverse() * gc->transform;
 566                 isometry = matrix_is_isometry(cached_to_new);
 567             }
 568             if (0 != isometry && !is_inner_area(shape->cached_sarea, *area))
 569                 isometry = 0;
 570             if (0 != isometry && width != shape->cached_width) {
 571                 // if this happens without setting style, we have just switched to outline or back
 572                 isometry = 0;
 573             }
 574         }
 575
 576         if ( isometry == 0 ) {
 577             if ( shape->cached_stroke == NULL ) shape->cached_stroke=new Shape;
 578             shape->cached_stroke->Reset();
 579             Path*  thePath = new Path;
 580             Shape* theShape = new Shape;
 581             {
 582                 Geom::Matrix   tempMat( gc->transform );
 583                 thePath->LoadPathVector(shape->curve->get_pathvector(), tempMat, true);
 584             }
 585
 586             // add some padding to the rendering area, so clipped path does not go into a render area
 587             NRRectL padded_area = *area;
 588             padded_area.x0 -= (NR::ICoord)width;
 589             padded_area.x1 += (NR::ICoord)width;
 590             padded_area.y0 -= (NR::ICoord)width;
 591             padded_area.y1 += (NR::ICoord)width;
 592             if ((style->stroke_dash.n_dash && !outline) || is_inner_area(padded_area, NR_ARENA_ITEM(shape)->bbox)) {
 593                 thePath->Convert((outline) ? 4.0 : 1.0);
 594                 shape->cached_spartialy = false;
 595             }
 596             else {
 597                 thePath->Convert(&padded_area, (outline) ? 4.0 : 1.0);
 598                 shape->cached_spartialy = true;
 599             }
 600
 601             if (style->stroke_dash.n_dash && !outline) {
 602                 thePath->DashPolylineFromStyle(style, scale, 1.0);
 603             }
 604
 605             ButtType butt=butt_straight;
 606             switch (shape->_stroke.cap) {
 607                 case NRArenaShape::BUTT_CAP:
 608                     butt = butt_straight;
 609                     break;
 610                 case NRArenaShape::ROUND_CAP:
 611                     butt = butt_round;
 612                     break;
 613                 case NRArenaShape::SQUARE_CAP:
 614                     butt = butt_square;
 615                     break;
 616             }
 617             JoinType join=join_straight;
 618             switch (shape->_stroke.join) {
 619                 case NRArenaShape::MITRE_JOIN:
 620                     join = join_pointy;
 621                     break;
 622                 case NRArenaShape::ROUND_JOIN:
 623                     join = join_round;
 624                     break;
 625                 case NRArenaShape::BEVEL_JOIN:
 626                     join = join_straight;
 627                     break;
 628             }
 629
 630             if (outline) {
 631                 butt = butt_straight;
 632                 join = join_straight;
 633             }
 634
 635             thePath->Stroke(theShape, false, 0.5*width, join, butt,
 636                             0.5*width*shape->_stroke.mitre_limit);
 637
 638
 639             if (outline) {
 640                 // speeds it up, but uses evenodd for the stroke shape (which does not matter for 1-pixel wide outline)
 641                 shape->cached_stroke->Copy(theShape);
 642             } else {
 643                 shape->cached_stroke->ConvertToShape(theShape, fill_nonZero);
 644             }
 645
 646             shape->cached_width = width;
 647
 648             shape->cached_sctm=gc->transform;
 649             shape->cached_sarea = *area;
 650             delete thePath;
 651             delete theShape;
 652             if ( shape->stroke_shp == NULL ) shape->stroke_shp=new Shape;
 653
 654             shape->stroke_shp->Copy(shape->cached_stroke);
 655
 656         } else if ( 2 == isometry ) {
 657             if ( shape->stroke_shp == NULL ) {
 658                 shape->stroke_shp=new Shape;
 659                 shape->stroke_shp->Copy(shape->cached_stroke);
 660             }
 661         } else {
 662             if ( shape->stroke_shp == NULL )
 663                 shape->stroke_shp=new Shape;
 664             shape->stroke_shp->Reset(shape->cached_stroke->numberOfPoints(), shape->cached_stroke->numberOfEdges());
 665             for (int i = 0; i < shape->cached_stroke->numberOfPoints(); i++)
 666                 shape->stroke_shp->AddPoint(to_2geom(shape->cached_stroke->getPoint(i).x) * cached_to_new);
 667             if ( isometry == 1 ) {
 668                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 669                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).st,
 670                                                shape->cached_stroke->getEdge(i).en);
 671             } else if ( isometry == -1 ) {
 672                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 673                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).en,
 674                                                shape->cached_stroke->getEdge(i).st);
 675             }
 676             shape->stroke_shp->ForceToPolygon();
 677             shape->stroke_shp->needPointsSorting();
 678             shape->stroke_shp->needEdgesSorting();
 679         }
 680         shape->delayed_shp |= shape->cached_spartialy;
 681     }
 682 }
 683
 684
 685 void
 686 nr_arena_shape_add_bboxes(NRArenaShape* shape, Geom::Rect &bbox)
 687 {
 688     /* TODO: are these two if's mutually exclusive? ( i.e. "shape->stroke_shp <=> !shape->fill_shp" )
 689      * if so, then this can be written much more compact ! */
 690
 691     if ( shape->stroke_shp ) {
 692         Shape *larger = shape->stroke_shp;
 693         larger->CalcBBox();
 694         larger->leftX   = floor(larger->leftX);
 695         larger->rightX  = ceil(larger->rightX);
 696         larger->topY    = floor(larger->topY);
 697         larger->bottomY = ceil(larger->bottomY);
 698         Geom::Rect stroke_bbox( Geom::Interval(larger->leftX, larger->rightX),
 699                                 Geom::Interval(larger->topY,  larger->bottomY) );
 700         bbox.unionWith(stroke_bbox);
 701     }
 702
 703     if ( shape->fill_shp ) {
 704         Shape *larger = shape->fill_shp;
 705         larger->CalcBBox();
 706         larger->leftX   = floor(larger->leftX);
 707         larger->rightX  = ceil(larger->rightX);
 708         larger->topY    = floor(larger->topY);
 709         larger->bottomY = ceil(larger->bottomY);
 710         Geom::Rect fill_bbox( Geom::Interval(larger->leftX, larger->rightX),
 711                               Geom::Interval(larger->topY,  larger->bottomY) );
 712         bbox.unionWith(fill_bbox);
 713     }
 714 }
 715
 716 // cairo outline rendering:
 717 static unsigned int
 718 cairo_arena_shape_render_outline(cairo_t *ct, NRArenaItem *item, boost::optional<Geom::Rect> area)
 719 {
 720     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 721
 722     if (!ct)
 723         return item->state;
 724
 725     guint32 rgba = NR_ARENA_ITEM(shape)->arena->outlinecolor;
 726     // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 727     // by setting color channels in the "wrong" order
 728     cairo_set_source_rgba(ct, SP_RGBA32_B_F(rgba), SP_RGBA32_G_F(rgba), SP_RGBA32_R_F(rgba), SP_RGBA32_A_F(rgba));
 729
 730     cairo_set_line_width(ct, 0.5);
 731     cairo_set_tolerance(ct, 1.25); // low quality, but good enough for outline mode
 732     cairo_new_path(ct);
 733
 734     feed_pathvector_to_cairo (ct, shape->curve->get_pathvector(), shape->ctm, area, true, 0);
 735
 736     cairo_stroke(ct);
 737
 738     return item->state;
 739 }
 740
 741 // cairo stroke rendering (flat color only so far!):
 742 // works on canvas, but wrongs the colors in nonpremul buffers: icons and png export
 743 // (need to switch them to premul before this can be enabled)
 744 void
 745 cairo_arena_shape_render_stroke(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 746 {
 747     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 748     SPStyle const *style = shape->style;
 749
 750     float const scale = shape->ctm.descrim();
 751
 752     if (fabs(shape->_stroke.width * scale) < 0.01)
 753         return;
 754
 755     cairo_t *ct = nr_create_cairo_context (area, pb);
 756
 757     if (!ct)
 758         return;
 759
 760     guint32 rgba;
 761     if ( item->render_opacity ) {
 762         rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity *
 763                                                       SP_SCALE24_TO_FLOAT(style->opacity.value) );
 764     } else {
 765         rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity );
 766     }
 767
 768     // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 769     // by setting color channels in the "wrong" order
 770     cairo_set_source_rgba(ct, SP_RGBA32_B_F(rgba), SP_RGBA32_G_F(rgba), SP_RGBA32_R_F(rgba), SP_RGBA32_A_F(rgba));
 771
 772     float style_width = MAX(0.125, shape->_stroke.width * scale);
 773     cairo_set_line_width(ct, style_width);
 774
 775     switch (shape->_stroke.cap) {
 776         case NRArenaShape::BUTT_CAP:
 777             cairo_set_line_cap(ct, CAIRO_LINE_CAP_BUTT);
 778             break;
 779         case NRArenaShape::ROUND_CAP:
 780             cairo_set_line_cap(ct, CAIRO_LINE_CAP_ROUND);
 781             break;
 782         case NRArenaShape::SQUARE_CAP:
 783             cairo_set_line_cap(ct, CAIRO_LINE_CAP_SQUARE);
 784             break;
 785     }
 786     switch (shape->_stroke.join) {
 787         case NRArenaShape::MITRE_JOIN:
 788             cairo_set_line_join(ct, CAIRO_LINE_JOIN_MITER);
 789             break;
 790         case NRArenaShape::ROUND_JOIN:
 791             cairo_set_line_join(ct, CAIRO_LINE_JOIN_ROUND);
 792             break;
 793         case NRArenaShape::BEVEL_JOIN:
 794             cairo_set_line_join(ct, CAIRO_LINE_JOIN_BEVEL);
 795             break;
 796     }
 797
 798     cairo_set_miter_limit (ct, style->stroke_miterlimit.value);
 799
 800     if (style->stroke_dash.n_dash) {
 801         NRVpathDash dash;
 802         dash.offset = style->stroke_dash.offset * scale;
 803         dash.n_dash = style->stroke_dash.n_dash;
 804         dash.dash = g_new(double, dash.n_dash);
 805         for (int i = 0; i < dash.n_dash; i++) {
 806             dash.dash[i] = style->stroke_dash.dash[i] * scale;
 807         }
 808         cairo_set_dash (ct, dash.dash, dash.n_dash, dash.offset);
 809         g_free(dash.dash);
 810     }
 811
 812     cairo_set_tolerance(ct, 0.1);
 813     cairo_new_path(ct);
 814
 815     feed_pathvector_to_cairo (ct, shape->curve->get_pathvector(), shape->ctm, to_2geom(area->upgrade()), true, style_width);
 816
 817     cairo_stroke(ct);
 818
 819     cairo_surface_t *cst = cairo_get_target(ct);
 820     cairo_destroy (ct);
 821     cairo_surface_finish (cst);
 822     cairo_surface_destroy (cst);
 823
 824     pb->empty = FALSE;
 825 }
 826
 827
 828 /**
 829  * Renders the item.  Markers are just composed into the parent buffer.
 830  */
 831 static unsigned int
 832 nr_arena_shape_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags)
 833 {
 834     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 835
 836     if (!shape->curve) return item->state;
 837     if (!shape->style) return item->state;
 838
 839     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
 840
 841     if (outline) { // cairo outline rendering
 842
 843         pb->empty = FALSE;
 844         unsigned int ret = cairo_arena_shape_render_outline (ct, item, to_2geom((&pb->area)->upgrade()));
 845         if (ret & NR_ARENA_ITEM_STATE_INVALID) return ret;
 846
 847     } else {
 848
 849     if ( shape->delayed_shp ) {
 850         if ( nr_rect_l_test_intersect_ptr(area, &item->bbox) ) {
 851             NRGC   tempGC(NULL);
 852             tempGC.transform=shape->ctm;
 853             shape->delayed_shp = false;
 854             nr_arena_shape_update_stroke(shape,&tempGC,&pb->visible_area);
 855             nr_arena_shape_update_fill(shape,&tempGC,&pb->visible_area);
 856 /*      NRRect bbox;
 857         bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 858         nr_arena_shape_add_bboxes(shape,bbox);
 859         item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 860         item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 861         item->bbox.x1 = (gint32)(bbox.x1 + 1.0F);
 862         item->bbox.y1 = (gint32)(bbox.y1 + 1.0F);
 863         shape->approx_bbox=item->bbox;*/
 864         } else {
 865             return item->state;
 866         }
 867     }
 868
 869     SPStyle const *style = shape->style;
 870     if (shape->fill_shp) {
 871         NRPixBlock m;
 872         guint32 rgba;
 873
 874         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 875
 876         // if memory allocation failed, abort render
 877         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 878             nr_pixblock_release (&m);
 879             return (item->state);
 880         }
 881
 882         m.visible_area = pb->visible_area;
 883         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
 884         m.empty = FALSE;
 885
 886         if (shape->_fill.paint.type() == NRArenaShape::Paint::NONE) {
 887             // do not render fill in any way
 888         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::COLOR) {
 889             if ( item->render_opacity ) {
 890                 rgba = shape->_fill.paint.color().toRGBA32( shape->_fill.opacity *
 891                                                             SP_SCALE24_TO_FLOAT(style->opacity.value) );
 892             } else {
 893                 rgba = shape->_fill.paint.color().toRGBA32( shape->_fill.opacity );
 894             }
 895             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 896             pb->empty = FALSE;
 897         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::SERVER) {
 898             if (shape->fill_painter) {
 899                 nr_arena_render_paintserver_fill(pb, area, shape->fill_painter, shape->_fill.opacity, &m);
 900             }
 901         }
 902
 903         nr_pixblock_release(&m);
 904     }
 905
 906     if (shape->stroke_shp && shape->_stroke.paint.type() == NRArenaShape::Paint::COLOR) {
 907
 908         // cairo_arena_shape_render_stroke(item, area, pb);
 909
 910         guint32 rgba;
 911         NRPixBlock m;
 912
 913         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 914
 915         // if memory allocation failed, abort render
 916         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 917             nr_pixblock_release (&m);
 918             return (item->state);
 919         }
 920
 921         m.visible_area = pb->visible_area;
 922         nr_pixblock_render_shape_mask_or(m, shape->stroke_shp);
 923         m.empty = FALSE;
 924
 925             if ( item->render_opacity ) {
 926                 rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity *
 927                                                               SP_SCALE24_TO_FLOAT(style->opacity.value) );
 928             } else {
 929                 rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity );
 930             }
 931             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 932             pb->empty = FALSE;
 933
 934         nr_pixblock_release(&m);
 935
 936     } else if (shape->stroke_shp && shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER) {
 937
 938         NRPixBlock m;
 939
 940         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 941
 942         // if memory allocation failed, abort render
 943         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 944             nr_pixblock_release (&m);
 945             return (item->state);
 946         }
 947
 948         m.visible_area = pb->visible_area;
 949         nr_pixblock_render_shape_mask_or(m, shape->stroke_shp);
 950         m.empty = FALSE;
 951
 952         if (shape->stroke_painter) {
 953             nr_arena_render_paintserver_fill(pb, area, shape->stroke_painter, shape->_stroke.opacity, &m);
 954         }
 955
 956         nr_pixblock_release(&m);
 957     }
 958
 959     } // non-cairo non-outline branch
 960
 961     /* Render markers into parent buffer */
 962     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 963         unsigned int ret = nr_arena_item_invoke_render(ct, child, area, pb, flags);
 964         if (ret & NR_ARENA_ITEM_STATE_INVALID) return ret;
 965     }
 966
 967     return item->state;
 968 }
 969
 970
 971 // cairo clipping: this basically works except for the stride-must-be-divisible-by-4 cairo bug;
 972 // reenable this when the bug is fixed and remove the rest of this function
 973 // TODO
 974 #if defined(DEADCODE) && !defined(DEADCODE)
 975 static guint
 976 cairo_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 977 {
 978     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 979     if (!shape->curve) return item->state;
 980
 981         cairo_t *ct = nr_create_cairo_context (area, pb);
 982
 983         if (!ct)
 984             return item->state;
 985
 986         cairo_set_source_rgba(ct, 0, 0, 0, 1);
 987
 988         cairo_new_path(ct);
 989
 990         feed_pathvector_to_cairo (ct, shape->curve->get_pathvector(), shape->ctm, (area)->upgrade(), false, 0);
 991
 992         cairo_fill(ct);
 993
 994         cairo_surface_t *cst = cairo_get_target(ct);
 995         cairo_destroy (ct);
 996         cairo_surface_finish (cst);
 997         cairo_surface_destroy (cst);
 998
 999         pb->empty = FALSE;
1000
1001         return item->state;
1002 }
1003 #endif //defined(DEADCODE) && !defined(DEADCODE)
1004
1005
1006 static guint
1007 nr_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
1008 {
1009     //return cairo_arena_shape_clip(item, area, pb);
1010
1011     NRArenaShape *shape = NR_ARENA_SHAPE(item);
1012     if (!shape->curve) return item->state;
1013
1014     if ( shape->delayed_shp || shape->fill_shp == NULL) { // we need a fill shape no matter what
1015         if ( nr_rect_l_test_intersect_ptr(area, &item->bbox) ) {
1016             NRGC   tempGC(NULL);
1017             tempGC.transform=shape->ctm;
1018             shape->delayed_shp = false;
1019             nr_arena_shape_update_fill(shape, &tempGC, &pb->visible_area, true);
1020         } else {
1021             return item->state;
1022         }
1023     }
1024
1025     if ( shape->fill_shp ) {
1026         NRPixBlock m;
1027
1028         /* fixme: We can OR in one step (Lauris) */
1029         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
1030
1031         // if memory allocation failed, abort
1032         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
1033             nr_pixblock_release (&m);
1034             return (item->state);
1035         }
1036
1037         m.visible_area = pb->visible_area;
1038         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
1039
1040         for (int y = area->y0; y < area->y1; y++) {
1041             unsigned char *s, *d;
1042             s = NR_PIXBLOCK_PX(&m) + (y - area->y0) * m.rs;
1043             d = NR_PIXBLOCK_PX(pb) + (y - area->y0) * pb->rs;
1044             for (int x = area->x0; x < area->x1; x++) {
1045                 *d = NR_COMPOSEA_111(*s, *d);
1046                 d ++;
1047                 s ++;
1048             }
1049         }
1050         nr_pixblock_release(&m);
1051         pb->empty = FALSE;
1052     }
1053
1054     return item->state;
1055 }
1056
1057 static NRArenaItem *
1058 nr_arena_shape_pick(NRArenaItem *item, Geom::Point p, double delta, unsigned int /*sticky*/)
1059 {
1060     NRArenaShape *shape = NR_ARENA_SHAPE(item);
1061
1062     if (shape->repick_after > 0)
1063         shape->repick_after--;
1064
1065     if (shape->repick_after > 0) // we are a slow, huge path. skip this pick, returning what was returned last time
1066         return shape->last_pick;
1067
1068     if (!shape->curve) return NULL;
1069     if (!shape->style) return NULL;
1070
1071     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
1072
1073     if (SP_SCALE24_TO_FLOAT(shape->style->opacity.value) == 0 && !outline)
1074         // fully transparent, no pick unless outline mode
1075         return NULL;
1076
1077     GTimeVal tstart, tfinish;
1078     g_get_current_time (&tstart);
1079
1080     double width;
1081     if (outline) {
1082         width = 0.5;
1083     } else if (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE && shape->_stroke.opacity > 1e-3) {
1084         float const scale = shape->ctm.descrim();
1085         width = MAX(0.125, shape->_stroke.width * scale) / 2;
1086     } else {
1087         width = 0;
1088     }
1089
1090     double dist = NR_HUGE;
1091     int wind = 0;
1092     bool needfill = (shape->_fill.paint.type() != NRArenaShape::Paint::NONE
1093              && shape->_fill.opacity > 1e-3 && !outline);
1094
1095     if (item->arena->canvasarena) {
1096         Geom::Rect viewbox = item->arena->canvasarena->item.canvas->getViewbox();
1097         viewbox.expandBy (width);
1098         pathv_matrix_point_bbox_wind_distance(shape->curve->get_pathvector(), shape->ctm, p, NULL, needfill? &wind : NULL, &dist, 0.5, &viewbox);
1099     } else {
1100         pathv_matrix_point_bbox_wind_distance(shape->curve->get_pathvector(), shape->ctm, p, NULL, needfill? &wind : NULL, &dist, 0.5, NULL);
1101     }
1102
1103     g_get_current_time (&tfinish);
1104     glong this_pick = (tfinish.tv_sec - tstart.tv_sec) * 1000000 + (tfinish.tv_usec - tstart.tv_usec);
1105     //g_print ("pick time %lu\n", this_pick);
1106
1107     if (this_pick > 10000) { // slow picking, remember to skip several new picks
1108         shape->repick_after = this_pick / 5000;
1109     }
1110
1111     // covered by fill?
1112     if (needfill) {
1113         if (!shape->style->fill_rule.computed) {
1114             if (wind != 0) {
1115                 shape->last_pick = item;
1116                 return item;
1117             }
1118         } else {
1119             if (wind & 0x1) {
1120                 shape->last_pick = item;
1121                 return item;
1122             }
1123         }
1124     }
1125
1126     // close to the edge, as defined by strokewidth and delta?
1127     // this ignores dashing (as if the stroke is solid) and always works as if caps are round
1128     if (needfill || width > 0) { // if either fill or stroke visible,
1129         if ((dist - width) < delta) {
1130             shape->last_pick = item;
1131             return item;
1132         }
1133     }
1134
1135     // if not picked on the shape itself, try its markers
1136     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
1137         NRArenaItem *ret = nr_arena_item_invoke_pick(child, p, delta, 0);
1138         if (ret) {
1139             shape->last_pick = item;
1140             return item;
1141         }
1142     }
1143
1144     shape->last_pick = NULL;
1145     return NULL;
1146 }
1147
1148 /**
1149  *
1150  *  Requests a render of the shape, then if the shape is already a curve it
1151  *  unrefs the old curve; if the new curve is valid it creates a copy of the
1152  *  curve and adds it to the shape.  Finally, it requests an update of the
1153  *  arena for the shape.
1154  */
1155 void nr_arena_shape_set_path(NRArenaShape *shape, SPCurve *curve,bool justTrans)
1156 {
1157     g_return_if_fail(shape != NULL);
1158     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1159
1160     if ( justTrans == false ) {
1161         // dirty cached versions
1162         if ( shape->cached_fill ) {
1163             delete shape->cached_fill;
1164             shape->cached_fill=NULL;
1165         }
1166         if ( shape->cached_stroke ) {
1167             delete shape->cached_stroke;
1168             shape->cached_stroke=NULL;
1169         }
1170     }
1171
1172     nr_arena_item_request_render(NR_ARENA_ITEM(shape));
1173
1174     if (shape->curve) {
1175         shape->curve->unref();
1176         shape->curve = NULL;
1177     }
1178
1179     if (curve) {
1180         shape->curve = curve;
1181         curve->ref();
1182     }
1183
1184     nr_arena_item_request_update(NR_ARENA_ITEM(shape), NR_ARENA_ITEM_STATE_ALL, FALSE);
1185 }
1186
1187 void NRArenaShape::setFill(SPPaintServer *server) {
1188     _fill.paint.set(server);
1189     _invalidateCachedFill();
1190 }
1191
1192 void NRArenaShape::setFill(SPColor const &color) {
1193     _fill.paint.set(color);
1194     _invalidateCachedFill();
1195 }
1196
1197 void NRArenaShape::setFillOpacity(double opacity) {
1198     _fill.opacity = opacity;
1199     _invalidateCachedFill();
1200 }
1201
1202 void NRArenaShape::setFillRule(NRArenaShape::FillRule rule) {
1203     _fill.rule = rule;
1204     _invalidateCachedFill();
1205 }
1206
1207 void NRArenaShape::setStroke(SPPaintServer *server) {
1208     _stroke.paint.set(server);
1209     _invalidateCachedStroke();
1210 }
1211
1212 void NRArenaShape::setStroke(SPColor const &color) {
1213     _stroke.paint.set(color);
1214     _invalidateCachedStroke();
1215 }
1216
1217 void NRArenaShape::setStrokeOpacity(double opacity) {
1218     _stroke.opacity = opacity;
1219     _invalidateCachedStroke();
1220 }
1221
1222 void NRArenaShape::setStrokeWidth(double width) {
1223     _stroke.width = width;
1224     _invalidateCachedStroke();
1225 }
1226
1227 void NRArenaShape::setMitreLimit(double limit) {
1228     _stroke.mitre_limit = limit;
1229     _invalidateCachedStroke();
1230 }
1231
1232 void NRArenaShape::setLineCap(NRArenaShape::CapType cap) {
1233     _stroke.cap = cap;
1234     _invalidateCachedStroke();
1235 }
1236
1237 void NRArenaShape::setLineJoin(NRArenaShape::JoinType join) {
1238     _stroke.join = join;
1239     _invalidateCachedStroke();
1240 }
1241
1242 /** nr_arena_shape_set_style
1243  *
1244  * Unrefs any existing style and ref's to the given one, then requests an update of the arena
1245  */
1246 void
1247 nr_arena_shape_set_style(NRArenaShape *shape, SPStyle *style)
1248 {
1249     g_return_if_fail(shape != NULL);
1250     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1251
1252     if (style) sp_style_ref(style);
1253     if (shape->style) sp_style_unref(shape->style);
1254     shape->style = style;
1255
1256     if ( style->fill.isPaintserver() ) {
1257         shape->setFill(style->getFillPaintServer());
1258     } else if ( style->fill.isColor() ) {
1259         shape->setFill(style->fill.value.color);
1260     } else if ( style->fill.isNone() ) {
1261         shape->setFill(NULL);
1262     } else {
1263         g_assert_not_reached();
1264     }
1265     shape->setFillOpacity(SP_SCALE24_TO_FLOAT(style->fill_opacity.value));
1266     switch (style->fill_rule.computed) {
1267         case SP_WIND_RULE_EVENODD: {
1268             shape->setFillRule(NRArenaShape::EVEN_ODD);
1269             break;
1270         }
1271         case SP_WIND_RULE_NONZERO: {
1272             shape->setFillRule(NRArenaShape::NONZERO);
1273             break;
1274         }
1275         default: {
1276             g_assert_not_reached();
1277         }
1278     }
1279
1280     if ( style->stroke.isPaintserver() ) {
1281         shape->setStroke(style->getStrokePaintServer());
1282     } else if ( style->stroke.isColor() ) {
1283         shape->setStroke(style->stroke.value.color);
1284     } else if ( style->stroke.isNone() ) {
1285         shape->setStroke(NULL);
1286     } else {
1287         g_assert_not_reached();
1288     }
1289     shape->setStrokeWidth(style->stroke_width.computed);
1290     shape->setStrokeOpacity(SP_SCALE24_TO_FLOAT(style->stroke_opacity.value));
1291     switch (style->stroke_linecap.computed) {
1292         case SP_STROKE_LINECAP_ROUND: {
1293             shape->setLineCap(NRArenaShape::ROUND_CAP);
1294             break;
1295         }
1296         case SP_STROKE_LINECAP_SQUARE: {
1297             shape->setLineCap(NRArenaShape::SQUARE_CAP);
1298             break;
1299         }
1300         case SP_STROKE_LINECAP_BUTT: {
1301             shape->setLineCap(NRArenaShape::BUTT_CAP);
1302             break;
1303         }
1304         default: {
1305             g_assert_not_reached();
1306         }
1307     }
1308     switch (style->stroke_linejoin.computed) {
1309         case SP_STROKE_LINEJOIN_ROUND: {
1310             shape->setLineJoin(NRArenaShape::ROUND_JOIN);
1311             break;
1312         }
1313         case SP_STROKE_LINEJOIN_BEVEL: {
1314             shape->setLineJoin(NRArenaShape::BEVEL_JOIN);
1315             break;
1316         }
1317         case SP_STROKE_LINEJOIN_MITER: {
1318             shape->setLineJoin(NRArenaShape::MITRE_JOIN);
1319             break;
1320         }
1321         default: {
1322             g_assert_not_reached();
1323         }
1324     }
1325     shape->setMitreLimit(style->stroke_miterlimit.value);
1326
1327     //if shape has a filter
1328     if (style->filter.set && style->getFilter()) {
1329         if (!shape->filter) {
1330             int primitives = sp_filter_primitive_count(SP_FILTER(style->getFilter()));
1331             shape->filter = new NR::Filter(primitives);
1332         }
1333         sp_filter_build_renderer(SP_FILTER(style->getFilter()), shape->filter);
1334     } else {
1335         //no filter set for this shape
1336         delete shape->filter;
1337         shape->filter = NULL;
1338     }
1339
1340     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1341 }
1342
1343 void
1344 nr_arena_shape_set_paintbox(NRArenaShape *shape, NRRect const *pbox)
1345 {
1346     g_return_if_fail(shape != NULL);
1347     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1348     g_return_if_fail(pbox != NULL);
1349
1350     if ((pbox->x0 < pbox->x1) && (pbox->y0 < pbox->y1)) {
1351         shape->paintbox = *pbox;
1352     } else {
1353         /* fixme: We kill warning, although not sure what to do here (Lauris) */
1354         shape->paintbox.x0 = shape->paintbox.y0 = 0.0F;
1355         shape->paintbox.x1 = shape->paintbox.y1 = 256.0F;
1356     }
1357
1358     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1359 }
1360
1361 void NRArenaShape::setPaintBox(Geom::Rect const &pbox)
1362 {
1363     paintbox.x0 = pbox.min()[Geom::X];
1364     paintbox.y0 = pbox.min()[Geom::Y];
1365     paintbox.x1 = pbox.max()[Geom::X];
1366     paintbox.y1 = pbox.max()[Geom::Y];
1367
1368     nr_arena_item_request_update(this, NR_ARENA_ITEM_STATE_ALL, FALSE);
1369 }
1370
1371 static void
1372 shape_run_A8_OR(raster_info &dest,void */*data*/,int st,float vst,int en,float ven)
1373 {
1374     if ( st >= en ) return;
1375     if ( vst < 0 ) vst=0;
1376     if ( vst > 1 ) vst=1;
1377     if ( ven < 0 ) ven=0;
1378     if ( ven > 1 ) ven=1;
1379     float   sv=vst;
1380     float   dv=ven-vst;
1381     int     len=en-st;
1382     unsigned char*   d=(unsigned char*)dest.buffer;
1383     d+=(st-dest.startPix);
1384     if ( fabs(dv) < 0.001 ) {
1385         if ( vst > 0.999 ) {
1386             /* Simple copy */
1387             while (len > 0) {
1388                 d[0] = 255;
1389                 d += 1;
1390                 len -= 1;
1391             }
1392         } else {
1393             sv*=256;
1394             unsigned int c0_24=(int)sv;
1395             c0_24&=0xFF;
1396             while (len > 0) {
1397                 /* Draw */
1398                 d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1399                 d += 1;
1400                 len -= 1;
1401             }
1402         }
1403     } else {
1404         if ( en <= st+1 ) {
1405             sv=0.5*(vst+ven);
1406             sv*=256;
1407             unsigned int c0_24=(int)sv;
1408             c0_24&=0xFF;
1409             /* Draw */
1410             d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1411         } else {
1412             dv/=len;
1413             sv+=0.5*dv; // correction trapezoidale
1414             sv*=16777216;
1415             dv*=16777216;
1416             int c0_24 = static_cast<int>(CLAMP(sv, 0, 16777216));
1417             int s0_24 = static_cast<int>(dv);
1418             while (len > 0) {
1419                 unsigned int ca;
1420                 /* Draw */
1421                 ca = c0_24 >> 16;
1422                 if ( ca > 255 ) ca=255;
1423                 d[0] = NR_COMPOSEA_111(ca,d[0]);
1424                 d += 1;
1425                 c0_24 += s0_24;
1426                 c0_24 = CLAMP(c0_24, 0, 16777216);
1427                 len -= 1;
1428             }
1429         }
1430     }
1431 }
1432
1433 void nr_pixblock_render_shape_mask_or(NRPixBlock &m,Shape* theS)
1434 {
1435     theS->CalcBBox();
1436     float l = theS->leftX, r = theS->rightX, t = theS->topY, b = theS->bottomY;
1437     int    il,ir,it,ib;
1438     il=(int)floor(l);
1439     ir=(int)ceil(r);
1440     it=(int)floor(t);
1441     ib=(int)ceil(b);
1442
1443     if ( il >= m.area.x1 || ir <= m.area.x0 || it >= m.area.y1 || ib <= m.area.y0 ) return;
1444     if ( il < m.area.x0 ) il=m.area.x0;
1445     if ( it < m.area.y0 ) it=m.area.y0;
1446     if ( ir > m.area.x1 ) ir=m.area.x1;
1447     if ( ib > m.area.y1 ) ib=m.area.y1;
1448
1449     /* This is the FloatLigne version.  See svn (prior to Apr 2006) for versions using BitLigne or direct BitLigne. */
1450     int    curPt;
1451     float  curY;
1452     theS->BeginQuickRaster(curY, curPt);
1453
1454     FloatLigne *theI = new FloatLigne();
1455     IntLigne *theIL = new IntLigne();
1456
1457     theS->DirectQuickScan(curY, curPt, (float) it, true, 1.0);
1458
1459     char *mdata = (char*)m.data.px;
1460     if ( m.size == NR_PIXBLOCK_SIZE_TINY ) mdata=(char*)m.data.p;
1461     uint32_t *ligStart = ((uint32_t*)(mdata + ((il - m.area.x0) + m.rs * (it - m.area.y0))));
1462     for (int y = it; y < ib; y++) {
1463         theI->Reset();
1464         theS->QuickScan(curY, curPt, ((float)(y+1)), theI, 1.0);
1465         theI->Flatten();
1466         theIL->Copy(theI);
1467
1468         raster_info  dest;
1469         dest.startPix=il;
1470         dest.endPix=ir;
1471         dest.sth=il;
1472         dest.stv=y;
1473         dest.buffer=ligStart;
1474         theIL->Raster(dest, NULL, shape_run_A8_OR);
1475         ligStart=((uint32_t*)(((char*)ligStart)+m.rs));
1476     }
1477     theS->EndQuickRaster();
1478     delete theI;
1479     delete theIL;
1480 }
1481
1482
1483 /*
1484   Local Variables:
1485   mode:c++
1486   c-file-style:"stroustrup"
1487   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1488   indent-tabs-mode:nil
1489   fill-column:99
1490   End:
1491 */
1492 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :