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::OptRect &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::OptRect 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                 /// \todo  just write item->bbox = boundingbox
 259                 if (boundingbox) {
 260                     item->bbox.x0 = (gint32)((*boundingbox)[0][0] - 1.0F);
 261                     item->bbox.y0 = (gint32)((*boundingbox)[1][0] - 1.0F);
 262                     item->bbox.x1 = (gint32)((*boundingbox)[0][1] + 1.9999F);
 263                     item->bbox.y1 = (gint32)((*boundingbox)[1][1] + 1.9999F);
 264                 } else {
 265                     item->bbox = NR_RECT_L_EMPTY;
 266                 }
 267             }
 268             if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 269                 for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 270                     nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 271                 }
 272             }
 273         }
 274         return (state | item->state);
 275     }
 276
 277     shape->delayed_shp=true;
 278     shape->ctm = gc->transform;
 279     boundingbox = Geom::OptRect();
 280
 281     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
 282
 283     if (shape->curve) {
 284         boundingbox = bounds_exact_transformed(shape->curve->get_pathvector(), gc->transform);
 285
 286         if (boundingbox && (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE || outline)) {
 287             float width, scale;
 288             scale = gc->transform.descrim();
 289             width = MAX(0.125, shape->_stroke.width * scale);
 290             if ( fabs(shape->_stroke.width * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
 291                 boundingbox->expandBy(width);
 292             }
 293             // those pesky miters, now
 294             float miterMax=width*shape->_stroke.mitre_limit;
 295             if ( miterMax > 0.01 ) {
 296                 // grunt mode. we should compute the various miters instead (one for each point on the curve)
 297                 boundingbox->expandBy(miterMax);
 298             }
 299         }
 300     }
 301
 302     /// \todo  just write item->bbox = boundingbox
 303     if (boundingbox) {
 304         shape->approx_bbox.x0 = (gint32)((*boundingbox)[0][0] - 1.0F);
 305         shape->approx_bbox.y0 = (gint32)((*boundingbox)[1][0] - 1.0F);
 306         shape->approx_bbox.x1 = (gint32)((*boundingbox)[0][1] + 1.9999F);
 307         shape->approx_bbox.y1 = (gint32)((*boundingbox)[1][1] + 1.9999F);
 308     } else {
 309         shape->approx_bbox = NR_RECT_L_EMPTY;
 310     }
 311     if ( area && nr_rect_l_test_intersect_ptr(area, &shape->approx_bbox) ) shape->delayed_shp=false;
 312
 313     /* Release state data */
 314     if (shape->fill_shp) {
 315         delete shape->fill_shp;
 316         shape->fill_shp = NULL;
 317     }
 318     if (shape->stroke_shp) {
 319         delete shape->stroke_shp;
 320         shape->stroke_shp = NULL;
 321     }
 322     if (shape->fill_painter) {
 323         sp_painter_free(shape->fill_painter);
 324         shape->fill_painter = NULL;
 325     }
 326     if (shape->stroke_painter) {
 327         sp_painter_free(shape->stroke_painter);
 328         shape->stroke_painter = NULL;
 329     }
 330
 331     if (!shape->curve ||
 332         !shape->style ||
 333         shape->curve->is_empty() ||
 334         (( shape->_fill.paint.type() == NRArenaShape::Paint::NONE ) &&
 335          ( shape->_stroke.paint.type() == NRArenaShape::Paint::NONE && !outline) ))
 336     {
 337         item->bbox = shape->approx_bbox;
 338         return NR_ARENA_ITEM_STATE_ALL;
 339     }
 340
 341     /* Build state data */
 342     if ( shape->delayed_shp ) {
 343         item->bbox=shape->approx_bbox;
 344     } else {
 345         nr_arena_shape_update_stroke(shape, gc, area);
 346         nr_arena_shape_update_fill(shape, gc, area);
 347
 348         boundingbox = Geom::OptRect();
 349         nr_arena_shape_add_bboxes(shape, boundingbox);
 350
 351         /// \todo  just write shape->approx_bbox = boundingbox
 352         if (boundingbox) {
 353             shape->approx_bbox.x0 = (gint32)((*boundingbox)[0][0] - 1.0F);
 354             shape->approx_bbox.y0 = (gint32)((*boundingbox)[1][0] - 1.0F);
 355             shape->approx_bbox.x1 = (gint32)((*boundingbox)[0][1] + 1.9999F);
 356             shape->approx_bbox.y1 = (gint32)((*boundingbox)[1][1] + 1.9999F);
 357         } else {
 358             shape->approx_bbox = NR_RECT_L_EMPTY;
 359         }
 360     }
 361
 362     if (!boundingbox)
 363         return NR_ARENA_ITEM_STATE_ALL;
 364
 365     /// \todo  just write item->bbox = boundingbox
 366     item->bbox.x0 = (gint32)((*boundingbox)[0][0] - 1.0F);
 367     item->bbox.y0 = (gint32)((*boundingbox)[1][0] - 1.0F);
 368     item->bbox.x1 = (gint32)((*boundingbox)[0][1] + 1.0F);
 369     item->bbox.y1 = (gint32)((*boundingbox)[1][1] + 1.0F);
 370     nr_arena_request_render_rect(item->arena, &item->bbox);
 371
 372     item->render_opacity = TRUE;
 373     if ( shape->_fill.paint.type() == NRArenaShape::Paint::SERVER ) {
 374         if (gc && gc->parent) {
 375             shape->fill_painter = sp_paint_server_painter_new(shape->_fill.paint.server(),
 376                                                               gc->transform, gc->parent->transform,
 377                                                               &shape->paintbox);
 378         }
 379         item->render_opacity = FALSE;
 380     }
 381     if ( shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER ) {
 382         if (gc && gc->parent) {
 383             shape->stroke_painter = sp_paint_server_painter_new(shape->_stroke.paint.server(),
 384                                                                 gc->transform, gc->parent->transform,
 385                                                                 &shape->paintbox);
 386         }
 387         item->render_opacity = FALSE;
 388     }
 389     if (  (shape->_fill.paint.type() != NRArenaShape::Paint::NONE &&
 390            shape->_stroke.paint.type() != NRArenaShape::Paint::NONE)
 391           || (shape->markers)
 392         )
 393     {
 394         // don't merge item opacity with paint opacity if there is a stroke on the fill, or markers on stroke
 395         item->render_opacity = FALSE;
 396     }
 397
 398     if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 399         for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 400             nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 401         }
 402     }
 403
 404     return NR_ARENA_ITEM_STATE_ALL;
 405 }
 406
 407 int matrix_is_isometry(Geom::Matrix p) {
 408     Geom::Matrix   tp;
 409     // transposition
 410     tp[0]=p[0];
 411     tp[1]=p[2];
 412     tp[2]=p[1];
 413     tp[3]=p[3];
 414     for (int i = 4; i < 6; i++) // shut valgrind up :)
 415         tp[i] = p[i] = 0;
 416     Geom::Matrix   isom = tp*p; // A^T * A = adjunct?
 417     // Is the adjunct nearly an identity function?
 418     if (isom.isTranslation(0.01)) {
 419         // the transformation is an isometry -> no need to recompute
 420         // the uncrossed polygon
 421         if ( p.det() < 0 )
 422             return -1;
 423         else
 424             return 1;
 425     }
 426     return 0;
 427 }
 428
 429 static bool is_inner_area(NRRectL const &outer, NRRectL const &inner) {
 430     return (outer.x0 <= inner.x0 && outer.y0 <= inner.y0 && outer.x1 >= inner.x1 && outer.y1 >= inner.y1);
 431 }
 432
 433 /* returns true if the pathvector has a region that needs fill.
 434  * is for optimizing purposes, so should be fast and can falsely return true.
 435  * CANNOT falsely return false. */
 436 static bool has_inner_area(Geom::PathVector const & pv) {
 437     // return false for the cases where there is surely no region to be filled
 438     if (pv.empty())
 439         return false;
 440
 441     if ( (pv.size() == 1) && (pv.front().size() <= 1) ) {
 442         // vector has only one path with only one segment, see if that's a non-curve segment: that would mean no internal region
 443         if ( is_straight_curve(pv.front().front()) )
 444         {
 445             return false;
 446         }
 447     }
 448
 449     return true; //too costly to see if it has region to be filled, so return true.
 450 }
 451
 452 /** force_shape is used for clipping paths, when we need the shape for clipping even if it's not filled */
 453 void
 454 nr_arena_shape_update_fill(NRArenaShape *shape, NRGC *gc, NRRectL *area, bool force_shape)
 455 {
 456     if ((shape->_fill.paint.type() != NRArenaShape::Paint::NONE || force_shape) &&
 457           has_inner_area(shape->curve->get_pathvector()) ) {
 458
 459             Geom::Matrix  cached_to_new = Geom::identity();
 460             int isometry = 0;
 461             if ( shape->cached_fill ) {
 462                 if (shape->cached_fctm == gc->transform) {
 463                     isometry = 2; // identity
 464                 } else {
 465                     cached_to_new = shape->cached_fctm.inverse() * gc->transform;
 466                     isometry = matrix_is_isometry(cached_to_new);
 467                 }
 468                 if (0 != isometry && !is_inner_area(shape->cached_farea, *area))
 469                     isometry = 0;
 470             }
 471             if ( isometry == 0 ) {
 472                 if ( shape->cached_fill == NULL ) shape->cached_fill=new Shape;
 473                 shape->cached_fill->Reset();
 474
 475                 Path*  thePath=new Path;
 476                 Shape* theShape=new Shape;
 477                 {
 478                     Geom::Matrix tempMat(gc->transform);
 479                     thePath->LoadPathVector(shape->curve->get_pathvector(), tempMat, true);
 480                 }
 481
 482                 if (is_inner_area(*area, NR_ARENA_ITEM(shape)->bbox)) {
 483                     thePath->Convert(1.0);
 484                     shape->cached_fpartialy = false;
 485                 } else {
 486                     thePath->Convert(area, 1.0);
 487                     shape->cached_fpartialy = true;
 488                 }
 489
 490                 thePath->Fill(theShape, 0);
 491
 492                 if ( shape->_fill.rule == NRArenaShape::EVEN_ODD ) {
 493                     shape->cached_fill->ConvertToShape(theShape, fill_oddEven);
 494                     // alternatively, this speeds up rendering of oddeven shapes but disables AA :(
 495                     //shape->cached_fill->Copy(theShape);
 496                 } else {
 497                     shape->cached_fill->ConvertToShape(theShape, fill_nonZero);
 498                 }
 499                 shape->cached_fctm=gc->transform;
 500                 shape->cached_farea = *area;
 501                 delete theShape;
 502                 delete thePath;
 503                 if ( shape->fill_shp == NULL )
 504                     shape->fill_shp = new Shape;
 505
 506                 shape->fill_shp->Copy(shape->cached_fill);
 507
 508             } else if ( 2 == isometry ) {
 509                 if ( shape->fill_shp == NULL ) {
 510                     shape->fill_shp = new Shape;
 511                     shape->fill_shp->Copy(shape->cached_fill);
 512                 }
 513             } else {
 514
 515                 if ( shape->fill_shp == NULL )
 516                     shape->fill_shp = new Shape;
 517
 518                 shape->fill_shp->Reset(shape->cached_fill->numberOfPoints(),
 519                                        shape->cached_fill->numberOfEdges());
 520                 for (int i = 0; i < shape->cached_fill->numberOfPoints(); i++)
 521                     shape->fill_shp->AddPoint(to_2geom(shape->cached_fill->getPoint(i).x) * cached_to_new);
 522                 if ( isometry == 1 ) {
 523                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 524                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).st,
 525                                                  shape->cached_fill->getEdge(i).en);
 526                 } else if ( isometry == -1 ) { // need to flip poly.
 527                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 528                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).en,
 529                                                  shape->cached_fill->getEdge(i).st);
 530                 }
 531                 shape->fill_shp->ForceToPolygon();
 532                 shape->fill_shp->needPointsSorting();
 533                 shape->fill_shp->needEdgesSorting();
 534             }
 535             shape->delayed_shp |= shape->cached_fpartialy;
 536     }
 537 }
 538
 539 void
 540 nr_arena_shape_update_stroke(NRArenaShape *shape,NRGC* gc, NRRectL *area)
 541 {
 542     SPStyle* style = shape->style;
 543
 544     float const scale = gc->transform.descrim();
 545
 546     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
 547
 548     if (outline) {
 549         // cairo does not need the livarot path for rendering
 550         return;
 551     }
 552
 553     // after switching normal stroke rendering to cairo too, optimize this: lower tolerance, disregard dashes
 554     // (since it will only be used for picking, not for rendering)
 555
 556     if (outline ||
 557         ((shape->_stroke.paint.type() != NRArenaShape::Paint::NONE) &&
 558          ( fabs(shape->_stroke.width * scale) > 0.01 ))) { // sinon c'est 0=oon veut pas de bord
 559
 560         float style_width = MAX(0.125, shape->_stroke.width * scale);
 561         float width;
 562         if (outline) {
 563             width = 0.5; // 1 pixel wide, independent of zoom
 564         } else {
 565             width = style_width;
 566         }
 567
 568         Geom::Matrix  cached_to_new = Geom::identity();
 569
 570         int isometry = 0;
 571         if ( shape->cached_stroke ) {
 572             if (shape->cached_sctm == gc->transform) {
 573                 isometry = 2; // identity
 574             } else {
 575                 cached_to_new = shape->cached_sctm.inverse() * gc->transform;
 576                 isometry = matrix_is_isometry(cached_to_new);
 577             }
 578             if (0 != isometry && !is_inner_area(shape->cached_sarea, *area))
 579                 isometry = 0;
 580             if (0 != isometry && width != shape->cached_width) {
 581                 // if this happens without setting style, we have just switched to outline or back
 582                 isometry = 0;
 583             }
 584         }
 585
 586         if ( isometry == 0 ) {
 587             if ( shape->cached_stroke == NULL ) shape->cached_stroke=new Shape;
 588             shape->cached_stroke->Reset();
 589             Path*  thePath = new Path;
 590             Shape* theShape = new Shape;
 591             {
 592                 Geom::Matrix   tempMat( gc->transform );
 593                 thePath->LoadPathVector(shape->curve->get_pathvector(), tempMat, true);
 594             }
 595
 596             // add some padding to the rendering area, so clipped path does not go into a render area
 597             NRRectL padded_area = *area;
 598             padded_area.x0 -= (NR::ICoord)width;
 599             padded_area.x1 += (NR::ICoord)width;
 600             padded_area.y0 -= (NR::ICoord)width;
 601             padded_area.y1 += (NR::ICoord)width;
 602             if ((style->stroke_dash.n_dash && !outline) || is_inner_area(padded_area, NR_ARENA_ITEM(shape)->bbox)) {
 603                 thePath->Convert((outline) ? 4.0 : 1.0);
 604                 shape->cached_spartialy = false;
 605             }
 606             else {
 607                 thePath->Convert(&padded_area, (outline) ? 4.0 : 1.0);
 608                 shape->cached_spartialy = true;
 609             }
 610
 611             if (style->stroke_dash.n_dash && !outline) {
 612                 thePath->DashPolylineFromStyle(style, scale, 1.0);
 613             }
 614
 615             ButtType butt=butt_straight;
 616             switch (shape->_stroke.cap) {
 617                 case NRArenaShape::BUTT_CAP:
 618                     butt = butt_straight;
 619                     break;
 620                 case NRArenaShape::ROUND_CAP:
 621                     butt = butt_round;
 622                     break;
 623                 case NRArenaShape::SQUARE_CAP:
 624                     butt = butt_square;
 625                     break;
 626             }
 627             JoinType join=join_straight;
 628             switch (shape->_stroke.join) {
 629                 case NRArenaShape::MITRE_JOIN:
 630                     join = join_pointy;
 631                     break;
 632                 case NRArenaShape::ROUND_JOIN:
 633                     join = join_round;
 634                     break;
 635                 case NRArenaShape::BEVEL_JOIN:
 636                     join = join_straight;
 637                     break;
 638             }
 639
 640             if (outline) {
 641                 butt = butt_straight;
 642                 join = join_straight;
 643             }
 644
 645             thePath->Stroke(theShape, false, 0.5*width, join, butt,
 646                             0.5*width*shape->_stroke.mitre_limit);
 647
 648
 649             if (outline) {
 650                 // speeds it up, but uses evenodd for the stroke shape (which does not matter for 1-pixel wide outline)
 651                 shape->cached_stroke->Copy(theShape);
 652             } else {
 653                 shape->cached_stroke->ConvertToShape(theShape, fill_nonZero);
 654             }
 655
 656             shape->cached_width = width;
 657
 658             shape->cached_sctm=gc->transform;
 659             shape->cached_sarea = *area;
 660             delete thePath;
 661             delete theShape;
 662             if ( shape->stroke_shp == NULL ) shape->stroke_shp=new Shape;
 663
 664             shape->stroke_shp->Copy(shape->cached_stroke);
 665
 666         } else if ( 2 == isometry ) {
 667             if ( shape->stroke_shp == NULL ) {
 668                 shape->stroke_shp=new Shape;
 669                 shape->stroke_shp->Copy(shape->cached_stroke);
 670             }
 671         } else {
 672             if ( shape->stroke_shp == NULL )
 673                 shape->stroke_shp=new Shape;
 674             shape->stroke_shp->Reset(shape->cached_stroke->numberOfPoints(), shape->cached_stroke->numberOfEdges());
 675             for (int i = 0; i < shape->cached_stroke->numberOfPoints(); i++)
 676                 shape->stroke_shp->AddPoint(to_2geom(shape->cached_stroke->getPoint(i).x) * cached_to_new);
 677             if ( isometry == 1 ) {
 678                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 679                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).st,
 680                                                shape->cached_stroke->getEdge(i).en);
 681             } else if ( isometry == -1 ) {
 682                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 683                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).en,
 684                                                shape->cached_stroke->getEdge(i).st);
 685             }
 686             shape->stroke_shp->ForceToPolygon();
 687             shape->stroke_shp->needPointsSorting();
 688             shape->stroke_shp->needEdgesSorting();
 689         }
 690         shape->delayed_shp |= shape->cached_spartialy;
 691     }
 692 }
 693
 694
 695 void
 696 nr_arena_shape_add_bboxes(NRArenaShape* shape, Geom::OptRect &bbox)
 697 {
 698     /* TODO: are these two if's mutually exclusive? ( i.e. "shape->stroke_shp <=> !shape->fill_shp" )
 699      * if so, then this can be written much more compact ! */
 700
 701     if ( shape->stroke_shp ) {
 702         Shape *larger = shape->stroke_shp;
 703         larger->CalcBBox();
 704         larger->leftX   = floor(larger->leftX);
 705         larger->rightX  = ceil(larger->rightX);
 706         larger->topY    = floor(larger->topY);
 707         larger->bottomY = ceil(larger->bottomY);
 708         Geom::Rect stroke_bbox( Geom::Interval(larger->leftX, larger->rightX),
 709                                 Geom::Interval(larger->topY,  larger->bottomY) );
 710         bbox.unionWith(stroke_bbox);
 711     }
 712
 713     if ( shape->fill_shp ) {
 714         Shape *larger = shape->fill_shp;
 715         larger->CalcBBox();
 716         larger->leftX   = floor(larger->leftX);
 717         larger->rightX  = ceil(larger->rightX);
 718         larger->topY    = floor(larger->topY);
 719         larger->bottomY = ceil(larger->bottomY);
 720         Geom::Rect fill_bbox( Geom::Interval(larger->leftX, larger->rightX),
 721                               Geom::Interval(larger->topY,  larger->bottomY) );
 722         bbox.unionWith(fill_bbox);
 723     }
 724 }
 725
 726 // cairo outline rendering:
 727 static unsigned int
 728 cairo_arena_shape_render_outline(cairo_t *ct, NRArenaItem *item, Geom::OptRect area)
 729 {
 730     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 731
 732     if (!ct)
 733         return item->state;
 734
 735     guint32 rgba = NR_ARENA_ITEM(shape)->arena->outlinecolor;
 736     // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 737     // by setting color channels in the "wrong" order
 738     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));
 739
 740     cairo_set_line_width(ct, 0.5);
 741     cairo_set_tolerance(ct, 1.25); // low quality, but good enough for outline mode
 742     cairo_new_path(ct);
 743
 744     feed_pathvector_to_cairo (ct, shape->curve->get_pathvector(), shape->ctm, area, true, 0);
 745
 746     cairo_stroke(ct);
 747
 748     return item->state;
 749 }
 750
 751 // cairo stroke rendering (flat color only so far!):
 752 // works on canvas, but wrongs the colors in nonpremul buffers: icons and png export
 753 // (need to switch them to premul before this can be enabled)
 754 void
 755 cairo_arena_shape_render_stroke(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 756 {
 757     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 758     SPStyle const *style = shape->style;
 759
 760     float const scale = shape->ctm.descrim();
 761
 762     if (fabs(shape->_stroke.width * scale) < 0.01)
 763         return;
 764
 765     cairo_t *ct = nr_create_cairo_context (area, pb);
 766
 767     if (!ct)
 768         return;
 769
 770     guint32 rgba;
 771     if ( item->render_opacity ) {
 772         rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity *
 773                                                       SP_SCALE24_TO_FLOAT(style->opacity.value) );
 774     } else {
 775         rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity );
 776     }
 777
 778     // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 779     // by setting color channels in the "wrong" order
 780     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));
 781
 782     float style_width = MAX(0.125, shape->_stroke.width * scale);
 783     cairo_set_line_width(ct, style_width);
 784
 785     switch (shape->_stroke.cap) {
 786         case NRArenaShape::BUTT_CAP:
 787             cairo_set_line_cap(ct, CAIRO_LINE_CAP_BUTT);
 788             break;
 789         case NRArenaShape::ROUND_CAP:
 790             cairo_set_line_cap(ct, CAIRO_LINE_CAP_ROUND);
 791             break;
 792         case NRArenaShape::SQUARE_CAP:
 793             cairo_set_line_cap(ct, CAIRO_LINE_CAP_SQUARE);
 794             break;
 795     }
 796     switch (shape->_stroke.join) {
 797         case NRArenaShape::MITRE_JOIN:
 798             cairo_set_line_join(ct, CAIRO_LINE_JOIN_MITER);
 799             break;
 800         case NRArenaShape::ROUND_JOIN:
 801             cairo_set_line_join(ct, CAIRO_LINE_JOIN_ROUND);
 802             break;
 803         case NRArenaShape::BEVEL_JOIN:
 804             cairo_set_line_join(ct, CAIRO_LINE_JOIN_BEVEL);
 805             break;
 806     }
 807
 808     cairo_set_miter_limit (ct, style->stroke_miterlimit.value);
 809
 810     if (style->stroke_dash.n_dash) {
 811         NRVpathDash dash;
 812         dash.offset = style->stroke_dash.offset * scale;
 813         dash.n_dash = style->stroke_dash.n_dash;
 814         dash.dash = g_new(double, dash.n_dash);
 815         for (int i = 0; i < dash.n_dash; i++) {
 816             dash.dash[i] = style->stroke_dash.dash[i] * scale;
 817         }
 818         cairo_set_dash (ct, dash.dash, dash.n_dash, dash.offset);
 819         g_free(dash.dash);
 820     }
 821
 822     cairo_set_tolerance(ct, 0.1);
 823     cairo_new_path(ct);
 824
 825     feed_pathvector_to_cairo (ct, shape->curve->get_pathvector(), shape->ctm, to_2geom(area->upgrade()), true, style_width);
 826
 827     cairo_stroke(ct);
 828
 829     cairo_surface_t *cst = cairo_get_target(ct);
 830     cairo_destroy (ct);
 831     cairo_surface_finish (cst);
 832     cairo_surface_destroy (cst);
 833
 834     pb->empty = FALSE;
 835 }
 836
 837
 838 /**
 839  * Renders the item.  Markers are just composed into the parent buffer.
 840  */
 841 static unsigned int
 842 nr_arena_shape_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags)
 843 {
 844     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 845
 846     if (!shape->curve) return item->state;
 847     if (!shape->style) return item->state;
 848
 849     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
 850
 851     if (outline) { // cairo outline rendering
 852
 853         pb->empty = FALSE;
 854         unsigned int ret = cairo_arena_shape_render_outline (ct, item, to_2geom((&pb->area)->upgrade()));
 855         if (ret & NR_ARENA_ITEM_STATE_INVALID) return ret;
 856
 857     } else {
 858
 859     if ( shape->delayed_shp ) {
 860         if ( nr_rect_l_test_intersect_ptr(area, &item->bbox) ) {
 861             NRGC   tempGC(NULL);
 862             tempGC.transform=shape->ctm;
 863             shape->delayed_shp = false;
 864             nr_arena_shape_update_stroke(shape,&tempGC,&pb->visible_area);
 865             nr_arena_shape_update_fill(shape,&tempGC,&pb->visible_area);
 866 /*      NRRect bbox;
 867         bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 868         nr_arena_shape_add_bboxes(shape,bbox);
 869         item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 870         item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 871         item->bbox.x1 = (gint32)(bbox.x1 + 1.0F);
 872         item->bbox.y1 = (gint32)(bbox.y1 + 1.0F);
 873         shape->approx_bbox=item->bbox;*/
 874         } else {
 875             return item->state;
 876         }
 877     }
 878
 879     SPStyle const *style = shape->style;
 880     if (shape->fill_shp) {
 881         NRPixBlock m;
 882         guint32 rgba;
 883
 884         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 885
 886         // if memory allocation failed, abort render
 887         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 888             nr_pixblock_release (&m);
 889             return (item->state);
 890         }
 891
 892         m.visible_area = pb->visible_area;
 893         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
 894         m.empty = FALSE;
 895
 896         if (shape->_fill.paint.type() == NRArenaShape::Paint::NONE) {
 897             // do not render fill in any way
 898         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::COLOR) {
 899             if ( item->render_opacity ) {
 900                 rgba = shape->_fill.paint.color().toRGBA32( shape->_fill.opacity *
 901                                                             SP_SCALE24_TO_FLOAT(style->opacity.value) );
 902             } else {
 903                 rgba = shape->_fill.paint.color().toRGBA32( shape->_fill.opacity );
 904             }
 905             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 906             pb->empty = FALSE;
 907         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::SERVER) {
 908             if (shape->fill_painter) {
 909                 nr_arena_render_paintserver_fill(pb, area, shape->fill_painter, shape->_fill.opacity, &m);
 910             }
 911         }
 912
 913         nr_pixblock_release(&m);
 914     }
 915
 916     if (shape->stroke_shp && shape->_stroke.paint.type() == NRArenaShape::Paint::COLOR) {
 917
 918         // cairo_arena_shape_render_stroke(item, area, pb);
 919
 920         guint32 rgba;
 921         NRPixBlock m;
 922
 923         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 924
 925         // if memory allocation failed, abort render
 926         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 927             nr_pixblock_release (&m);
 928             return (item->state);
 929         }
 930
 931         m.visible_area = pb->visible_area;
 932         nr_pixblock_render_shape_mask_or(m, shape->stroke_shp);
 933         m.empty = FALSE;
 934
 935             if ( item->render_opacity ) {
 936                 rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity *
 937                                                               SP_SCALE24_TO_FLOAT(style->opacity.value) );
 938             } else {
 939                 rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity );
 940             }
 941             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 942             pb->empty = FALSE;
 943
 944         nr_pixblock_release(&m);
 945
 946     } else if (shape->stroke_shp && shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER) {
 947
 948         NRPixBlock m;
 949
 950         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 951
 952         // if memory allocation failed, abort render
 953         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 954             nr_pixblock_release (&m);
 955             return (item->state);
 956         }
 957
 958         m.visible_area = pb->visible_area;
 959         nr_pixblock_render_shape_mask_or(m, shape->stroke_shp);
 960         m.empty = FALSE;
 961
 962         if (shape->stroke_painter) {
 963             nr_arena_render_paintserver_fill(pb, area, shape->stroke_painter, shape->_stroke.opacity, &m);
 964         }
 965
 966         nr_pixblock_release(&m);
 967     }
 968
 969     } // non-cairo non-outline branch
 970
 971     /* Render markers into parent buffer */
 972     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 973         unsigned int ret = nr_arena_item_invoke_render(ct, child, area, pb, flags);
 974         if (ret & NR_ARENA_ITEM_STATE_INVALID) return ret;
 975     }
 976
 977     return item->state;
 978 }
 979
 980
 981 // cairo clipping: this basically works except for the stride-must-be-divisible-by-4 cairo bug;
 982 // reenable this when the bug is fixed and remove the rest of this function
 983 // TODO
 984 #if defined(DEADCODE) && !defined(DEADCODE)
 985 static guint
 986 cairo_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 987 {
 988     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 989     if (!shape->curve) return item->state;
 990
 991         cairo_t *ct = nr_create_cairo_context (area, pb);
 992
 993         if (!ct)
 994             return item->state;
 995
 996         cairo_set_source_rgba(ct, 0, 0, 0, 1);
 997
 998         cairo_new_path(ct);
 999
1000         feed_pathvector_to_cairo (ct, shape->curve->get_pathvector(), shape->ctm, (area)->upgrade(), false, 0);
1001
1002         cairo_fill(ct);
1003
1004         cairo_surface_t *cst = cairo_get_target(ct);
1005         cairo_destroy (ct);
1006         cairo_surface_finish (cst);
1007         cairo_surface_destroy (cst);
1008
1009         pb->empty = FALSE;
1010
1011         return item->state;
1012 }
1013 #endif //defined(DEADCODE) && !defined(DEADCODE)
1014
1015
1016 static guint
1017 nr_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
1018 {
1019     //return cairo_arena_shape_clip(item, area, pb);
1020
1021     NRArenaShape *shape = NR_ARENA_SHAPE(item);
1022     if (!shape->curve) return item->state;
1023
1024     if ( shape->delayed_shp || shape->fill_shp == NULL) { // we need a fill shape no matter what
1025         if ( nr_rect_l_test_intersect_ptr(area, &item->bbox) ) {
1026             NRGC   tempGC(NULL);
1027             tempGC.transform=shape->ctm;
1028             shape->delayed_shp = false;
1029             nr_arena_shape_update_fill(shape, &tempGC, &pb->visible_area, true);
1030         } else {
1031             return item->state;
1032         }
1033     }
1034
1035     if ( shape->fill_shp ) {
1036         NRPixBlock m;
1037
1038         /* fixme: We can OR in one step (Lauris) */
1039         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
1040
1041         // if memory allocation failed, abort
1042         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
1043             nr_pixblock_release (&m);
1044             return (item->state);
1045         }
1046
1047         m.visible_area = pb->visible_area;
1048         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
1049
1050         for (int y = area->y0; y < area->y1; y++) {
1051             unsigned char *s, *d;
1052             s = NR_PIXBLOCK_PX(&m) + (y - area->y0) * m.rs;
1053             d = NR_PIXBLOCK_PX(pb) + (y - area->y0) * pb->rs;
1054             for (int x = area->x0; x < area->x1; x++) {
1055                 *d = NR_COMPOSEA_111(*s, *d);
1056                 d ++;
1057                 s ++;
1058             }
1059         }
1060         nr_pixblock_release(&m);
1061         pb->empty = FALSE;
1062     }
1063
1064     return item->state;
1065 }
1066
1067 static NRArenaItem *
1068 nr_arena_shape_pick(NRArenaItem *item, Geom::Point p, double delta, unsigned int /*sticky*/)
1069 {
1070     NRArenaShape *shape = NR_ARENA_SHAPE(item);
1071
1072     if (shape->repick_after > 0)
1073         shape->repick_after--;
1074
1075     if (shape->repick_after > 0) // we are a slow, huge path. skip this pick, returning what was returned last time
1076         return shape->last_pick;
1077
1078     if (!shape->curve) return NULL;
1079     if (!shape->style) return NULL;
1080
1081     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
1082
1083     if (SP_SCALE24_TO_FLOAT(shape->style->opacity.value) == 0 && !outline)
1084         // fully transparent, no pick unless outline mode
1085         return NULL;
1086
1087     GTimeVal tstart, tfinish;
1088     g_get_current_time (&tstart);
1089
1090     double width;
1091     if (outline) {
1092         width = 0.5;
1093     } else if (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE && shape->_stroke.opacity > 1e-3) {
1094         float const scale = shape->ctm.descrim();
1095         width = MAX(0.125, shape->_stroke.width * scale) / 2;
1096     } else {
1097         width = 0;
1098     }
1099
1100     double dist = NR_HUGE;
1101     int wind = 0;
1102     bool needfill = (shape->_fill.paint.type() != NRArenaShape::Paint::NONE
1103              && shape->_fill.opacity > 1e-3 && !outline);
1104
1105     if (item->arena->canvasarena) {
1106         Geom::Rect viewbox = item->arena->canvasarena->item.canvas->getViewbox();
1107         viewbox.expandBy (width);
1108         pathv_matrix_point_bbox_wind_distance(shape->curve->get_pathvector(), shape->ctm, p, NULL, needfill? &wind : NULL, &dist, 0.5, &viewbox);
1109     } else {
1110         pathv_matrix_point_bbox_wind_distance(shape->curve->get_pathvector(), shape->ctm, p, NULL, needfill? &wind : NULL, &dist, 0.5, NULL);
1111     }
1112
1113     g_get_current_time (&tfinish);
1114     glong this_pick = (tfinish.tv_sec - tstart.tv_sec) * 1000000 + (tfinish.tv_usec - tstart.tv_usec);
1115     //g_print ("pick time %lu\n", this_pick);
1116
1117     if (this_pick > 10000) { // slow picking, remember to skip several new picks
1118         shape->repick_after = this_pick / 5000;
1119     }
1120
1121     // covered by fill?
1122     if (needfill) {
1123         if (!shape->style->fill_rule.computed) {
1124             if (wind != 0) {
1125                 shape->last_pick = item;
1126                 return item;
1127             }
1128         } else {
1129             if (wind & 0x1) {
1130                 shape->last_pick = item;
1131                 return item;
1132             }
1133         }
1134     }
1135
1136     // close to the edge, as defined by strokewidth and delta?
1137     // this ignores dashing (as if the stroke is solid) and always works as if caps are round
1138     if (needfill || width > 0) { // if either fill or stroke visible,
1139         if ((dist - width) < delta) {
1140             shape->last_pick = item;
1141             return item;
1142         }
1143     }
1144
1145     // if not picked on the shape itself, try its markers
1146     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
1147         NRArenaItem *ret = nr_arena_item_invoke_pick(child, p, delta, 0);
1148         if (ret) {
1149             shape->last_pick = item;
1150             return item;
1151         }
1152     }
1153
1154     shape->last_pick = NULL;
1155     return NULL;
1156 }
1157
1158 /**
1159  *
1160  *  Requests a render of the shape, then if the shape is already a curve it
1161  *  unrefs the old curve; if the new curve is valid it creates a copy of the
1162  *  curve and adds it to the shape.  Finally, it requests an update of the
1163  *  arena for the shape.
1164  */
1165 void nr_arena_shape_set_path(NRArenaShape *shape, SPCurve *curve,bool justTrans)
1166 {
1167     g_return_if_fail(shape != NULL);
1168     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1169
1170     if ( justTrans == false ) {
1171         // dirty cached versions
1172         if ( shape->cached_fill ) {
1173             delete shape->cached_fill;
1174             shape->cached_fill=NULL;
1175         }
1176         if ( shape->cached_stroke ) {
1177             delete shape->cached_stroke;
1178             shape->cached_stroke=NULL;
1179         }
1180     }
1181
1182     nr_arena_item_request_render(NR_ARENA_ITEM(shape));
1183
1184     if (shape->curve) {
1185         shape->curve->unref();
1186         shape->curve = NULL;
1187     }
1188
1189     if (curve) {
1190         shape->curve = curve;
1191         curve->ref();
1192     }
1193
1194     nr_arena_item_request_update(NR_ARENA_ITEM(shape), NR_ARENA_ITEM_STATE_ALL, FALSE);
1195 }
1196
1197 void NRArenaShape::setFill(SPPaintServer *server) {
1198     _fill.paint.set(server);
1199     _invalidateCachedFill();
1200 }
1201
1202 void NRArenaShape::setFill(SPColor const &color) {
1203     _fill.paint.set(color);
1204     _invalidateCachedFill();
1205 }
1206
1207 void NRArenaShape::setFillOpacity(double opacity) {
1208     _fill.opacity = opacity;
1209     _invalidateCachedFill();
1210 }
1211
1212 void NRArenaShape::setFillRule(NRArenaShape::FillRule rule) {
1213     _fill.rule = rule;
1214     _invalidateCachedFill();
1215 }
1216
1217 void NRArenaShape::setStroke(SPPaintServer *server) {
1218     _stroke.paint.set(server);
1219     _invalidateCachedStroke();
1220 }
1221
1222 void NRArenaShape::setStroke(SPColor const &color) {
1223     _stroke.paint.set(color);
1224     _invalidateCachedStroke();
1225 }
1226
1227 void NRArenaShape::setStrokeOpacity(double opacity) {
1228     _stroke.opacity = opacity;
1229     _invalidateCachedStroke();
1230 }
1231
1232 void NRArenaShape::setStrokeWidth(double width) {
1233     _stroke.width = width;
1234     _invalidateCachedStroke();
1235 }
1236
1237 void NRArenaShape::setMitreLimit(double limit) {
1238     _stroke.mitre_limit = limit;
1239     _invalidateCachedStroke();
1240 }
1241
1242 void NRArenaShape::setLineCap(NRArenaShape::CapType cap) {
1243     _stroke.cap = cap;
1244     _invalidateCachedStroke();
1245 }
1246
1247 void NRArenaShape::setLineJoin(NRArenaShape::JoinType join) {
1248     _stroke.join = join;
1249     _invalidateCachedStroke();
1250 }
1251
1252 /** nr_arena_shape_set_style
1253  *
1254  * Unrefs any existing style and ref's to the given one, then requests an update of the arena
1255  */
1256 void
1257 nr_arena_shape_set_style(NRArenaShape *shape, SPStyle *style)
1258 {
1259     g_return_if_fail(shape != NULL);
1260     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1261
1262     if (style) sp_style_ref(style);
1263     if (shape->style) sp_style_unref(shape->style);
1264     shape->style = style;
1265
1266     if ( style->fill.isPaintserver() ) {
1267         shape->setFill(style->getFillPaintServer());
1268     } else if ( style->fill.isColor() ) {
1269         shape->setFill(style->fill.value.color);
1270     } else if ( style->fill.isNone() ) {
1271         shape->setFill(NULL);
1272     } else {
1273         g_assert_not_reached();
1274     }
1275     shape->setFillOpacity(SP_SCALE24_TO_FLOAT(style->fill_opacity.value));
1276     switch (style->fill_rule.computed) {
1277         case SP_WIND_RULE_EVENODD: {
1278             shape->setFillRule(NRArenaShape::EVEN_ODD);
1279             break;
1280         }
1281         case SP_WIND_RULE_NONZERO: {
1282             shape->setFillRule(NRArenaShape::NONZERO);
1283             break;
1284         }
1285         default: {
1286             g_assert_not_reached();
1287         }
1288     }
1289
1290     if ( style->stroke.isPaintserver() ) {
1291         shape->setStroke(style->getStrokePaintServer());
1292     } else if ( style->stroke.isColor() ) {
1293         shape->setStroke(style->stroke.value.color);
1294     } else if ( style->stroke.isNone() ) {
1295         shape->setStroke(NULL);
1296     } else {
1297         g_assert_not_reached();
1298     }
1299     shape->setStrokeWidth(style->stroke_width.computed);
1300     shape->setStrokeOpacity(SP_SCALE24_TO_FLOAT(style->stroke_opacity.value));
1301     switch (style->stroke_linecap.computed) {
1302         case SP_STROKE_LINECAP_ROUND: {
1303             shape->setLineCap(NRArenaShape::ROUND_CAP);
1304             break;
1305         }
1306         case SP_STROKE_LINECAP_SQUARE: {
1307             shape->setLineCap(NRArenaShape::SQUARE_CAP);
1308             break;
1309         }
1310         case SP_STROKE_LINECAP_BUTT: {
1311             shape->setLineCap(NRArenaShape::BUTT_CAP);
1312             break;
1313         }
1314         default: {
1315             g_assert_not_reached();
1316         }
1317     }
1318     switch (style->stroke_linejoin.computed) {
1319         case SP_STROKE_LINEJOIN_ROUND: {
1320             shape->setLineJoin(NRArenaShape::ROUND_JOIN);
1321             break;
1322         }
1323         case SP_STROKE_LINEJOIN_BEVEL: {
1324             shape->setLineJoin(NRArenaShape::BEVEL_JOIN);
1325             break;
1326         }
1327         case SP_STROKE_LINEJOIN_MITER: {
1328             shape->setLineJoin(NRArenaShape::MITRE_JOIN);
1329             break;
1330         }
1331         default: {
1332             g_assert_not_reached();
1333         }
1334     }
1335     shape->setMitreLimit(style->stroke_miterlimit.value);
1336
1337     //if shape has a filter
1338     if (style->filter.set && style->getFilter()) {
1339         if (!shape->filter) {
1340             int primitives = sp_filter_primitive_count(SP_FILTER(style->getFilter()));
1341             shape->filter = new NR::Filter(primitives);
1342         }
1343         sp_filter_build_renderer(SP_FILTER(style->getFilter()), shape->filter);
1344     } else {
1345         //no filter set for this shape
1346         delete shape->filter;
1347         shape->filter = NULL;
1348     }
1349
1350     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1351 }
1352
1353 void
1354 nr_arena_shape_set_paintbox(NRArenaShape *shape, NRRect const *pbox)
1355 {
1356     g_return_if_fail(shape != NULL);
1357     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1358     g_return_if_fail(pbox != NULL);
1359
1360     if ((pbox->x0 < pbox->x1) && (pbox->y0 < pbox->y1)) {
1361         shape->paintbox = *pbox;
1362     } else {
1363         /* fixme: We kill warning, although not sure what to do here (Lauris) */
1364         shape->paintbox.x0 = shape->paintbox.y0 = 0.0F;
1365         shape->paintbox.x1 = shape->paintbox.y1 = 256.0F;
1366     }
1367
1368     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1369 }
1370
1371 void NRArenaShape::setPaintBox(Geom::Rect const &pbox)
1372 {
1373     paintbox.x0 = pbox.min()[Geom::X];
1374     paintbox.y0 = pbox.min()[Geom::Y];
1375     paintbox.x1 = pbox.max()[Geom::X];
1376     paintbox.y1 = pbox.max()[Geom::Y];
1377
1378     nr_arena_item_request_update(this, NR_ARENA_ITEM_STATE_ALL, FALSE);
1379 }
1380
1381 static void
1382 shape_run_A8_OR(raster_info &dest,void */*data*/,int st,float vst,int en,float ven)
1383 {
1384     if ( st >= en ) return;
1385     if ( vst < 0 ) vst=0;
1386     if ( vst > 1 ) vst=1;
1387     if ( ven < 0 ) ven=0;
1388     if ( ven > 1 ) ven=1;
1389     float   sv=vst;
1390     float   dv=ven-vst;
1391     int     len=en-st;
1392     unsigned char*   d=(unsigned char*)dest.buffer;
1393     d+=(st-dest.startPix);
1394     if ( fabs(dv) < 0.001 ) {
1395         if ( vst > 0.999 ) {
1396             /* Simple copy */
1397             while (len > 0) {
1398                 d[0] = 255;
1399                 d += 1;
1400                 len -= 1;
1401             }
1402         } else {
1403             sv*=256;
1404             unsigned int c0_24=(int)sv;
1405             c0_24&=0xFF;
1406             while (len > 0) {
1407                 /* Draw */
1408                 d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1409                 d += 1;
1410                 len -= 1;
1411             }
1412         }
1413     } else {
1414         if ( en <= st+1 ) {
1415             sv=0.5*(vst+ven);
1416             sv*=256;
1417             unsigned int c0_24=(int)sv;
1418             c0_24&=0xFF;
1419             /* Draw */
1420             d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1421         } else {
1422             dv/=len;
1423             sv+=0.5*dv; // correction trapezoidale
1424             sv*=16777216;
1425             dv*=16777216;
1426             int c0_24 = static_cast<int>(CLAMP(sv, 0, 16777216));
1427             int s0_24 = static_cast<int>(dv);
1428             while (len > 0) {
1429                 unsigned int ca;
1430                 /* Draw */
1431                 ca = c0_24 >> 16;
1432                 if ( ca > 255 ) ca=255;
1433                 d[0] = NR_COMPOSEA_111(ca,d[0]);
1434                 d += 1;
1435                 c0_24 += s0_24;
1436                 c0_24 = CLAMP(c0_24, 0, 16777216);
1437                 len -= 1;
1438             }
1439         }
1440     }
1441 }
1442
1443 void nr_pixblock_render_shape_mask_or(NRPixBlock &m,Shape* theS)
1444 {
1445     theS->CalcBBox();
1446     float l = theS->leftX, r = theS->rightX, t = theS->topY, b = theS->bottomY;
1447     int    il,ir,it,ib;
1448     il=(int)floor(l);
1449     ir=(int)ceil(r);
1450     it=(int)floor(t);
1451     ib=(int)ceil(b);
1452
1453     if ( il >= m.area.x1 || ir <= m.area.x0 || it >= m.area.y1 || ib <= m.area.y0 ) return;
1454     if ( il < m.area.x0 ) il=m.area.x0;
1455     if ( it < m.area.y0 ) it=m.area.y0;
1456     if ( ir > m.area.x1 ) ir=m.area.x1;
1457     if ( ib > m.area.y1 ) ib=m.area.y1;
1458
1459     /* This is the FloatLigne version.  See svn (prior to Apr 2006) for versions using BitLigne or direct BitLigne. */
1460     int    curPt;
1461     float  curY;
1462     theS->BeginQuickRaster(curY, curPt);
1463
1464     FloatLigne *theI = new FloatLigne();
1465     IntLigne *theIL = new IntLigne();
1466
1467     theS->DirectQuickScan(curY, curPt, (float) it, true, 1.0);
1468
1469     char *mdata = (char*)m.data.px;
1470     if ( m.size == NR_PIXBLOCK_SIZE_TINY ) mdata=(char*)m.data.p;
1471     uint32_t *ligStart = ((uint32_t*)(mdata + ((il - m.area.x0) + m.rs * (it - m.area.y0))));
1472     for (int y = it; y < ib; y++) {
1473         theI->Reset();
1474         theS->QuickScan(curY, curPt, ((float)(y+1)), theI, 1.0);
1475         theI->Flatten();
1476         theIL->Copy(theI);
1477
1478         raster_info  dest;
1479         dest.startPix=il;
1480         dest.endPix=ir;
1481         dest.sth=il;
1482         dest.stv=y;
1483         dest.buffer=ligStart;
1484         theIL->Raster(dest, NULL, shape_run_A8_OR);
1485         ligStart=((uint32_t*)(((char*)ligStart)+m.rs));
1486     }
1487     theS->EndQuickRaster();
1488     delete theI;
1489     delete theIL;
1490 }
1491
1492
1493 /*
1494   Local Variables:
1495   mode:c++
1496   c-file-style:"stroustrup"
1497   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1498   indent-tabs-mode:nil
1499   fill-column:99
1500   End:
1501 */
1502 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :