src/display/nr-arena-shape.cpp

   1 #define __NR_ARENA_SHAPE_C__
   2
   3 /*
   4  * RGBA display list system for inkscape
   5  *
   6  * Author:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *
   9  * Copyright (C) 2001-2002 Lauris Kaplinski
  10  * Copyright (C) 2001 Ximian, Inc.
  11  *
  12  * Released under GNU GPL, read the file 'COPYING' for more information
  13  */
  14
  15
  16
  17 #include <display/canvas-arena.h>
  18 #include <display/nr-arena.h>
  19 #include <display/nr-arena-shape.h>
  20 #include <libnr/n-art-bpath.h>
  21 #include <libnr/nr-path.h>
  22 #include <libnr/nr-pixops.h>
  23 #include <libnr/nr-matrix-ops.h>
  24 #include <libnr/nr-matrix-fns.h>
  25 #include <libnr/nr-blit.h>
  26 #include <livarot/Path.h>
  27 #include <livarot/float-line.h>
  28 #include <livarot/int-line.h>
  29 #include <style.h>
  30 #include "prefs-utils.h"
  31 #include "inkscape-cairo.h"
  32
  33 #include "sp-filter.h"
  34 #include "sp-filter-reference.h"
  35 #include "display/nr-filter.h"
  36
  37 #include <cairo.h>
  38
  39 //int  showRuns=0;
  40 void nr_pixblock_render_shape_mask_or(NRPixBlock &m,Shape* theS);
  41
  42 static void nr_arena_shape_class_init(NRArenaShapeClass *klass);
  43 static void nr_arena_shape_init(NRArenaShape *shape);
  44 static void nr_arena_shape_finalize(NRObject *object);
  45
  46 static NRArenaItem *nr_arena_shape_children(NRArenaItem *item);
  47 static void nr_arena_shape_add_child(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
  48 static void nr_arena_shape_remove_child(NRArenaItem *item, NRArenaItem *child);
  49 static void nr_arena_shape_set_child_position(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
  50
  51 static guint nr_arena_shape_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
  52 static unsigned int nr_arena_shape_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);
  53 static guint nr_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
  54 static NRArenaItem *nr_arena_shape_pick(NRArenaItem *item, NR::Point p, double delta, unsigned int sticky);
  55
  56 static NRArenaItemClass *shape_parent_class;
  57
  58 NRType
  59 nr_arena_shape_get_type(void)
  60 {
  61     static NRType type = 0;
  62     if (!type) {
  63         type = nr_object_register_type(NR_TYPE_ARENA_ITEM,
  64                                        "NRArenaShape",
  65                                        sizeof(NRArenaShapeClass),
  66                                        sizeof(NRArenaShape),
  67                                        (void (*)(NRObjectClass *)) nr_arena_shape_class_init,
  68                                        (void (*)(NRObject *)) nr_arena_shape_init);
  69     }
  70     return type;
  71 }
  72
  73 static void
  74 nr_arena_shape_class_init(NRArenaShapeClass *klass)
  75 {
  76     NRObjectClass *object_class;
  77     NRArenaItemClass *item_class;
  78
  79     object_class = (NRObjectClass *) klass;
  80     item_class = (NRArenaItemClass *) klass;
  81
  82     shape_parent_class = (NRArenaItemClass *)  ((NRObjectClass *) klass)->parent;
  83
  84     object_class->finalize = nr_arena_shape_finalize;
  85     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaShape>;
  86
  87     item_class->children = nr_arena_shape_children;
  88     item_class->add_child = nr_arena_shape_add_child;
  89     item_class->set_child_position = nr_arena_shape_set_child_position;
  90     item_class->remove_child = nr_arena_shape_remove_child;
  91     item_class->update = nr_arena_shape_update;
  92     item_class->render = nr_arena_shape_render;
  93     item_class->clip = nr_arena_shape_clip;
  94     item_class->pick = nr_arena_shape_pick;
  95 }
  96
  97 /**
  98  * Initializes the arena shape, setting all parameters to null, 0, false,
  99  * or other defaults
 100  */
 101 static void
 102 nr_arena_shape_init(NRArenaShape *shape)
 103 {
 104     shape->curve = NULL;
 105     shape->style = NULL;
 106     shape->paintbox.x0 = shape->paintbox.y0 = 0.0F;
 107     shape->paintbox.x1 = shape->paintbox.y1 = 256.0F;
 108
 109     nr_matrix_set_identity(&shape->ctm);
 110     shape->fill_painter = NULL;
 111     shape->stroke_painter = NULL;
 112     shape->cached_fill = NULL;
 113     shape->cached_stroke = NULL;
 114     shape->cached_fpartialy = false;
 115     shape->cached_spartialy = false;
 116     shape->fill_shp = NULL;
 117     shape->stroke_shp = NULL;
 118
 119     shape->delayed_shp = false;
 120
 121     shape->approx_bbox.x0 = shape->approx_bbox.y0 = 0;
 122     shape->approx_bbox.x1 = shape->approx_bbox.y1 = 0;
 123     nr_matrix_set_identity(&shape->cached_fctm);
 124     nr_matrix_set_identity(&shape->cached_sctm);
 125
 126     shape->markers = NULL;
 127
 128     shape->last_pick = NULL;
 129     shape->repick_after = 0;
 130 }
 131
 132 static void
 133 nr_arena_shape_finalize(NRObject *object)
 134 {
 135     NRArenaShape *shape = (NRArenaShape *) object;
 136
 137     if (shape->fill_shp) delete shape->fill_shp;
 138     if (shape->stroke_shp) delete shape->stroke_shp;
 139     if (shape->cached_fill) delete shape->cached_fill;
 140     if (shape->cached_stroke) delete shape->cached_stroke;
 141     if (shape->fill_painter) sp_painter_free(shape->fill_painter);
 142     if (shape->stroke_painter) sp_painter_free(shape->stroke_painter);
 143
 144     if (shape->style) sp_style_unref(shape->style);
 145     if (shape->curve) sp_curve_unref(shape->curve);
 146
 147     ((NRObjectClass *) shape_parent_class)->finalize(object);
 148 }
 149
 150 /**
 151  * Retrieves the markers from the item
 152  */
 153 static NRArenaItem *
 154 nr_arena_shape_children(NRArenaItem *item)
 155 {
 156     NRArenaShape *shape = (NRArenaShape *) item;
 157
 158     return shape->markers;
 159 }
 160
 161 /**
 162  * Attaches child to item, and if ref is not NULL, sets it and ref->next as
 163  * the prev and next items.  If ref is NULL, then it sets the item's markers
 164  * as the next items.
 165  */
 166 static void
 167 nr_arena_shape_add_child(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
 168 {
 169     NRArenaShape *shape = (NRArenaShape *) item;
 170
 171     if (!ref) {
 172         shape->markers = nr_arena_item_attach(item, child, NULL, shape->markers);
 173     } else {
 174         ref->next = nr_arena_item_attach(item, child, ref, ref->next);
 175     }
 176
 177     nr_arena_item_request_update(item, NR_ARENA_ITEM_STATE_ALL, FALSE);
 178 }
 179
 180 /**
 181  * Removes child from the shape.  If there are no prev items in
 182  * the child, it sets items' markers to the next item in the child.
 183  */
 184 static void
 185 nr_arena_shape_remove_child(NRArenaItem *item, NRArenaItem *child)
 186 {
 187     NRArenaShape *shape = (NRArenaShape *) item;
 188
 189     if (child->prev) {
 190         nr_arena_item_detach(item, child);
 191     } else {
 192         shape->markers = nr_arena_item_detach(item, child);
 193     }
 194
 195     nr_arena_item_request_update(item, NR_ARENA_ITEM_STATE_ALL, FALSE);
 196 }
 197
 198 /**
 199  * Detaches child from item, and if there are no previous items in child, it
 200  * sets item's markers to the child.  It then attaches the child back onto the item.
 201  * If ref is null, it sets the markers to be the next item, otherwise it uses
 202  * the next/prev items in ref.
 203  */
 204 static void
 205 nr_arena_shape_set_child_position(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
 206 {
 207     NRArenaShape *shape = (NRArenaShape *) item;
 208
 209     if (child->prev) {
 210         nr_arena_item_detach(item, child);
 211     } else {
 212         shape->markers = nr_arena_item_detach(item, child);
 213     }
 214
 215     if (!ref) {
 216         shape->markers = nr_arena_item_attach(item, child, NULL, shape->markers);
 217     } else {
 218         ref->next = nr_arena_item_attach(item, child, ref, ref->next);
 219     }
 220
 221     nr_arena_item_request_render(child);
 222 }
 223
 224 void nr_arena_shape_update_stroke(NRArenaShape *shape, NRGC* gc, NRRectL *area);
 225 void nr_arena_shape_update_fill(NRArenaShape *shape, NRGC *gc, NRRectL *area, bool force_shape = false);
 226 void nr_arena_shape_add_bboxes(NRArenaShape* shape,NRRect &bbox);
 227
 228 /**
 229  * Updates the arena shape 'item' and all of its children, including the markers.
 230  */
 231 static guint
 232 nr_arena_shape_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset)
 233 {
 234     NRRect bbox;
 235
 236     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 237
 238     unsigned int beststate = NR_ARENA_ITEM_STATE_ALL;
 239
 240     unsigned int newstate;
 241     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 242         newstate = nr_arena_item_invoke_update(child, area, gc, state, reset);
 243         beststate = beststate & newstate;
 244     }
 245
 246     if (!(state & NR_ARENA_ITEM_STATE_RENDER)) {
 247         /* We do not have to create rendering structures */
 248         shape->ctm = gc->transform;
 249         if (state & NR_ARENA_ITEM_STATE_BBOX) {
 250             if (shape->curve) {
 251                 NRBPath bp;
 252                 /* fixme: */
 253                 bbox.x0 = bbox.y0 = NR_HUGE;
 254                 bbox.x1 = bbox.y1 = -NR_HUGE;
 255                 bp.path = SP_CURVE_BPATH(shape->curve);
 256                 nr_path_matrix_bbox_union(&bp, gc->transform, &bbox);
 257                 item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 258                 item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 259                 item->bbox.x1 = (gint32)(bbox.x1 + 1.9999F);
 260                 item->bbox.y1 = (gint32)(bbox.y1 + 1.9999F);
 261             }
 262             if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 263                 for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 264                     nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 265                 }
 266             }
 267         }
 268         return (state | item->state);
 269     }
 270
 271     shape->delayed_shp=true;
 272     shape->ctm = gc->transform;
 273     bbox.x0 = bbox.y0 = NR_HUGE;
 274     bbox.x1 = bbox.y1 = -NR_HUGE;
 275
 276     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == RENDERMODE_OUTLINE);
 277
 278     if (shape->curve) {
 279         NRBPath bp;
 280         /* fixme: */
 281         bbox.x0 = bbox.y0 = NR_HUGE;
 282         bbox.x1 = bbox.y1 = -NR_HUGE;
 283         bp.path = SP_CURVE_BPATH(shape->curve);
 284         nr_path_matrix_bbox_union(&bp, gc->transform, &bbox);
 285         if (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE || outline) {
 286             float width, scale;
 287             scale = NR_MATRIX_DF_EXPANSION(&gc->transform);
 288             width = MAX(0.125, shape->_stroke.width * scale);
 289             if ( fabs(shape->_stroke.width * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
 290                 bbox.x0-=width;
 291                 bbox.x1+=width;
 292                 bbox.y0-=width;
 293                 bbox.y1+=width;
 294             }
 295             // those pesky miters, now
 296             float miterMax=width*shape->_stroke.mitre_limit;
 297             if ( miterMax > 0.01 ) {
 298                 // grunt mode. we should compute the various miters instead (one for each point on the curve)
 299                 bbox.x0-=miterMax;
 300                 bbox.x1+=miterMax;
 301                 bbox.y0-=miterMax;
 302                 bbox.y1+=miterMax;
 303             }
 304         }
 305     } else {
 306     }
 307     shape->approx_bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 308     shape->approx_bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 309     shape->approx_bbox.x1 = (gint32)(bbox.x1 + 1.9999F);
 310     shape->approx_bbox.y1 = (gint32)(bbox.y1 + 1.9999F);
 311     if ( area && nr_rect_l_test_intersect(area, &shape->approx_bbox) ) shape->delayed_shp=false;
 312
 313     /* Release state data */
 314     if (TRUE || !nr_matrix_test_transform_equal(&gc->transform, &shape->ctm, NR_EPSILON)) {
 315         /* Concept test */
 316         if (shape->fill_shp) {
 317             delete shape->fill_shp;
 318             shape->fill_shp = NULL;
 319         }
 320     }
 321     if (shape->stroke_shp) {
 322         delete shape->stroke_shp;
 323         shape->stroke_shp = NULL;
 324     }
 325     if (shape->fill_painter) {
 326         sp_painter_free(shape->fill_painter);
 327         shape->fill_painter = NULL;
 328     }
 329     if (shape->stroke_painter) {
 330         sp_painter_free(shape->stroke_painter);
 331         shape->stroke_painter = NULL;
 332     }
 333
 334     if (!shape->curve ||
 335         !shape->style ||
 336         sp_curve_is_empty(shape->curve) ||
 337         (( shape->_fill.paint.type() == NRArenaShape::Paint::NONE ) &&
 338          ( shape->_stroke.paint.type() == NRArenaShape::Paint::NONE && !outline) ))
 339     {
 340         item->bbox = shape->approx_bbox;
 341         return NR_ARENA_ITEM_STATE_ALL;
 342     }
 343
 344     /* Build state data */
 345     if ( shape->delayed_shp ) {
 346         item->bbox=shape->approx_bbox;
 347     } else {
 348         nr_arena_shape_update_stroke(shape, gc, area);
 349         nr_arena_shape_update_fill(shape, gc, area);
 350
 351         bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 352         nr_arena_shape_add_bboxes(shape,bbox);
 353
 354         shape->approx_bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 355         shape->approx_bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 356         shape->approx_bbox.x1 = (gint32)(bbox.x1 + 1.9999F);
 357         shape->approx_bbox.y1 = (gint32)(bbox.y1 + 1.9999F);
 358     }
 359
 360     if (nr_rect_d_test_empty(&bbox)) return NR_ARENA_ITEM_STATE_ALL;
 361
 362     item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 363     item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 364     item->bbox.x1 = (gint32)(bbox.x1 + 1.0F);
 365     item->bbox.y1 = (gint32)(bbox.y1 + 1.0F);
 366     nr_arena_request_render_rect(item->arena, &item->bbox);
 367
 368     item->render_opacity = TRUE;
 369     if ( shape->_fill.paint.type() == NRArenaShape::Paint::SERVER ) {
 370         if (gc && gc->parent) {
 371             shape->fill_painter = sp_paint_server_painter_new(shape->_fill.paint.server(),
 372                                                               NR::Matrix(&gc->transform), NR::Matrix(&gc->parent->transform),
 373                                                               &shape->paintbox);
 374         }
 375         item->render_opacity = FALSE;
 376     }
 377     if ( shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER ) {
 378         if (gc && gc->parent) {
 379             shape->stroke_painter = sp_paint_server_painter_new(shape->_stroke.paint.server(),
 380                                                                 NR::Matrix(&gc->transform), NR::Matrix(&gc->parent->transform),
 381                                                                 &shape->paintbox);
 382         }
 383         item->render_opacity = FALSE;
 384     }
 385     if (  (shape->_fill.paint.type() != NRArenaShape::Paint::NONE &&
 386            shape->_stroke.paint.type() != NRArenaShape::Paint::NONE)
 387           || (shape->markers)
 388         )
 389     {
 390         // don't merge item opacity with paint opacity if there is a stroke on the fill, or markers on stroke
 391         item->render_opacity = FALSE;
 392     }
 393
 394     if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 395         for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 396             nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 397         }
 398     }
 399
 400     return NR_ARENA_ITEM_STATE_ALL;
 401 }
 402
 403 int matrix_is_isometry(NR::Matrix p) {
 404     NR::Matrix   tp;
 405     // transposition
 406     tp[0]=p[0];
 407     tp[1]=p[2];
 408     tp[2]=p[1];
 409     tp[3]=p[3];
 410     for (int i = 4; i < 6; i++) // shut valgrind up :)
 411         tp[i] = p[i] = 0;
 412     NR::Matrix   isom = tp*p; // A^T * A = adjunct?
 413     // Is the adjunct nearly an identity function?
 414     if (isom.is_translation(0.01)) {
 415         // the transformation is an isometry -> no need to recompute
 416         // the uncrossed polygon
 417         if ( p.det() < 0 )
 418             return -1;
 419         else
 420             return 1;
 421     }
 422     return 0;
 423 }
 424
 425 static bool is_inner_area(NRRectL const &outer, NRRectL const &inner) {
 426     return (outer.x0 <= inner.x0 && outer.y0 <= inner.y0 && outer.x1 >= inner.x1 && outer.y1 >= inner.y1);
 427 }
 428
 429 /** force_shape is used for clipping paths, when we need the shape for clipping even if it's not filled */
 430 void
 431 nr_arena_shape_update_fill(NRArenaShape *shape, NRGC *gc, NRRectL *area, bool force_shape)
 432 {
 433     if ((shape->_fill.paint.type() != NRArenaShape::Paint::NONE || force_shape) &&
 434         ((shape->curve->end > 2) || (SP_CURVE_BPATH(shape->curve)[1].code == NR_CURVETO)) ) {
 435         if (TRUE || !shape->fill_shp) {
 436             NR::Matrix  cached_to_new = NR::identity();
 437             int isometry = 0;
 438             if ( shape->cached_fill ) {
 439                 if (shape->cached_fctm == gc->transform) {
 440                     isometry = 2; // identity
 441                 } else {
 442                     cached_to_new = shape->cached_fctm.inverse() * gc->transform;
 443                     isometry = matrix_is_isometry(cached_to_new);
 444                 }
 445                 if (0 != isometry && !is_inner_area(shape->cached_farea, *area))
 446                     isometry = 0;
 447             }
 448             if ( isometry == 0 ) {
 449                 if ( shape->cached_fill == NULL ) shape->cached_fill=new Shape;
 450                 shape->cached_fill->Reset();
 451
 452                 Path*  thePath=new Path;
 453                 Shape* theShape=new Shape;
 454                 {
 455                     NR::Matrix   tempMat(gc->transform);
 456                     thePath->LoadArtBPath(SP_CURVE_BPATH(shape->curve),tempMat,true);
 457                 }
 458
 459                 if (is_inner_area(*area, NR_ARENA_ITEM(shape)->bbox)) {
 460                     thePath->Convert(1.0);
 461                     shape->cached_fpartialy = false;
 462                 } else {
 463                     thePath->Convert(area, 1.0);
 464                     shape->cached_fpartialy = true;
 465                 }
 466
 467                 thePath->Fill(theShape, 0);
 468
 469                 if ( shape->_fill.rule == NRArenaShape::EVEN_ODD ) {
 470                     shape->cached_fill->ConvertToShape(theShape, fill_oddEven);
 471                     // alternatively, this speeds up rendering of oddeven shapes but disables AA :(
 472                     //shape->cached_fill->Copy(theShape);
 473                 } else {
 474                     shape->cached_fill->ConvertToShape(theShape, fill_nonZero);
 475                 }
 476                 shape->cached_fctm=gc->transform;
 477                 shape->cached_farea = *area;
 478                 delete theShape;
 479                 delete thePath;
 480                 if ( shape->fill_shp == NULL )
 481                     shape->fill_shp = new Shape;
 482
 483                 shape->fill_shp->Copy(shape->cached_fill);
 484
 485             } else if ( 2 == isometry ) {
 486                 if ( shape->fill_shp == NULL ) {
 487                     shape->fill_shp = new Shape;
 488                     shape->fill_shp->Copy(shape->cached_fill);
 489                 }
 490             } else {
 491
 492                 if ( shape->fill_shp == NULL )
 493                     shape->fill_shp = new Shape;
 494
 495                 shape->fill_shp->Reset(shape->cached_fill->numberOfPoints(),
 496                                        shape->cached_fill->numberOfEdges());
 497                 for (int i = 0; i < shape->cached_fill->numberOfPoints(); i++)
 498                     shape->fill_shp->AddPoint(shape->cached_fill->getPoint(i).x * cached_to_new);
 499                 if ( isometry == 1 ) {
 500                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 501                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).st,
 502                                                  shape->cached_fill->getEdge(i).en);
 503                 } else if ( isometry == -1 ) { // need to flip poly.
 504                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 505                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).en,
 506                                                  shape->cached_fill->getEdge(i).st);
 507                 }
 508                 shape->fill_shp->ForceToPolygon();
 509                 shape->fill_shp->needPointsSorting();
 510                 shape->fill_shp->needEdgesSorting();
 511             }
 512             shape->delayed_shp |= shape->cached_fpartialy;
 513         }
 514     }
 515 }
 516
 517 void
 518 nr_arena_shape_update_stroke(NRArenaShape *shape,NRGC* gc, NRRectL *area)
 519 {
 520     SPStyle* style = shape->style;
 521
 522     float const scale = NR_MATRIX_DF_EXPANSION(&gc->transform);
 523
 524     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == RENDERMODE_OUTLINE);
 525
 526     if (outline) {
 527         // cairo does not need the livarot path for rendering
 528         return;
 529     }
 530
 531     // after switching normal stroke rendering to cairo too, optimize this: lower tolerance, disregard dashes
 532     // (since it will only be used for picking, not for rendering)
 533
 534     if (outline ||
 535         ((shape->_stroke.paint.type() != NRArenaShape::Paint::NONE) &&
 536          ( fabs(shape->_stroke.width * scale) > 0.01 ))) { // sinon c'est 0=oon veut pas de bord
 537
 538         float style_width = MAX(0.125, shape->_stroke.width * scale);
 539         float width;
 540         if (outline) {
 541             width = 0.5; // 1 pixel wide, independent of zoom
 542         } else {
 543             width = style_width;
 544         }
 545
 546         NR::Matrix  cached_to_new = NR::identity();
 547
 548         int isometry = 0;
 549         if ( shape->cached_stroke ) {
 550             if (shape->cached_sctm == gc->transform) {
 551                 isometry = 2; // identity
 552             } else {
 553                 cached_to_new = shape->cached_sctm.inverse() * gc->transform;
 554                 isometry = matrix_is_isometry(cached_to_new);
 555             }
 556             if (0 != isometry && !is_inner_area(shape->cached_sarea, *area))
 557                 isometry = 0;
 558             if (0 != isometry && width != shape->cached_width) {
 559                 // if this happens without setting style, we have just switched to outline or back
 560                 isometry = 0;
 561             }
 562         }
 563
 564         if ( isometry == 0 ) {
 565             if ( shape->cached_stroke == NULL ) shape->cached_stroke=new Shape;
 566             shape->cached_stroke->Reset();
 567             Path*  thePath = new Path;
 568             Shape* theShape = new Shape;
 569             {
 570                 NR::Matrix   tempMat(gc->transform);
 571                 thePath->LoadArtBPath(SP_CURVE_BPATH(shape->curve), tempMat, true);
 572             }
 573
 574             // add some padding to the rendering area, so clipped path does not go into a render area
 575             NRRectL padded_area = *area;
 576             padded_area.x0 -= (NR::ICoord)width;
 577             padded_area.x1 += (NR::ICoord)width;
 578             padded_area.y0 -= (NR::ICoord)width;
 579             padded_area.y1 += (NR::ICoord)width;
 580             if ((style->stroke_dash.n_dash && !outline) || is_inner_area(padded_area, NR_ARENA_ITEM(shape)->bbox)) {
 581                 thePath->Convert((outline) ? 4.0 : 1.0);
 582                 shape->cached_spartialy = false;
 583             }
 584             else {
 585                 thePath->Convert(&padded_area, (outline) ? 4.0 : 1.0);
 586                 shape->cached_spartialy = true;
 587             }
 588
 589             if (style->stroke_dash.n_dash && !outline) {
 590                 thePath->DashPolylineFromStyle(style, scale, 1.0);
 591             }
 592
 593             ButtType butt=butt_straight;
 594             switch (shape->_stroke.cap) {
 595                 case NRArenaShape::BUTT_CAP:
 596                     butt = butt_straight;
 597                     break;
 598                 case NRArenaShape::ROUND_CAP:
 599                     butt = butt_round;
 600                     break;
 601                 case NRArenaShape::SQUARE_CAP:
 602                     butt = butt_square;
 603                     break;
 604             }
 605             JoinType join=join_straight;
 606             switch (shape->_stroke.join) {
 607                 case NRArenaShape::MITRE_JOIN:
 608                     join = join_pointy;
 609                     break;
 610                 case NRArenaShape::ROUND_JOIN:
 611                     join = join_round;
 612                     break;
 613                 case NRArenaShape::BEVEL_JOIN:
 614                     join = join_straight;
 615                     break;
 616             }
 617
 618             if (outline) {
 619                 butt = butt_straight;
 620                 join = join_straight;
 621             }
 622
 623             thePath->Stroke(theShape, false, 0.5*width, join, butt,
 624                             0.5*width*shape->_stroke.mitre_limit);
 625
 626
 627             if (outline) {
 628                 // speeds it up, but uses evenodd for the stroke shape (which does not matter for 1-pixel wide outline)
 629                 shape->cached_stroke->Copy(theShape);
 630             } else {
 631                 shape->cached_stroke->ConvertToShape(theShape, fill_nonZero);
 632             }
 633
 634             shape->cached_width = width;
 635
 636             shape->cached_sctm=gc->transform;
 637             shape->cached_sarea = *area;
 638             delete thePath;
 639             delete theShape;
 640             if ( shape->stroke_shp == NULL ) shape->stroke_shp=new Shape;
 641
 642             shape->stroke_shp->Copy(shape->cached_stroke);
 643
 644         } else if ( 2 == isometry ) {
 645             if ( shape->stroke_shp == NULL ) {
 646                 shape->stroke_shp=new Shape;
 647                 shape->stroke_shp->Copy(shape->cached_stroke);
 648             }
 649         } else {
 650             if ( shape->stroke_shp == NULL )
 651                 shape->stroke_shp=new Shape;
 652             shape->stroke_shp->Reset(shape->cached_stroke->numberOfPoints(), shape->cached_stroke->numberOfEdges());
 653             for (int i = 0; i < shape->cached_stroke->numberOfPoints(); i++)
 654                 shape->stroke_shp->AddPoint(shape->cached_stroke->getPoint(i).x * cached_to_new);
 655             if ( isometry == 1 ) {
 656                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 657                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).st,
 658                                                shape->cached_stroke->getEdge(i).en);
 659             } else if ( isometry == -1 ) {
 660                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 661                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).en,
 662                                                shape->cached_stroke->getEdge(i).st);
 663             }
 664             shape->stroke_shp->ForceToPolygon();
 665             shape->stroke_shp->needPointsSorting();
 666             shape->stroke_shp->needEdgesSorting();
 667         }
 668         shape->delayed_shp |= shape->cached_spartialy;
 669     }
 670 }
 671
 672
 673 void
 674 nr_arena_shape_add_bboxes(NRArenaShape* shape, NRRect &bbox)
 675 {
 676     if ( shape->stroke_shp ) {
 677         shape->stroke_shp->CalcBBox();
 678         shape->stroke_shp->leftX=floor(shape->stroke_shp->leftX);
 679         shape->stroke_shp->rightX=ceil(shape->stroke_shp->rightX);
 680         shape->stroke_shp->topY=floor(shape->stroke_shp->topY);
 681         shape->stroke_shp->bottomY=ceil(shape->stroke_shp->bottomY);
 682         if ( bbox.x0 >= bbox.x1 ) {
 683             if ( shape->stroke_shp->leftX < shape->stroke_shp->rightX ) {
 684                 bbox.x0=shape->stroke_shp->leftX;
 685                 bbox.x1=shape->stroke_shp->rightX;
 686             }
 687         } else {
 688             if ( shape->stroke_shp->leftX < bbox.x0 )
 689                 bbox.x0=shape->stroke_shp->leftX;
 690             if ( shape->stroke_shp->rightX > bbox.x1 )
 691                 bbox.x1=shape->stroke_shp->rightX;
 692         }
 693         if ( bbox.y0 >= bbox.y1 ) {
 694             if ( shape->stroke_shp->topY < shape->stroke_shp->bottomY ) {
 695                 bbox.y0=shape->stroke_shp->topY;
 696                 bbox.y1=shape->stroke_shp->bottomY;
 697             }
 698         } else {
 699             if ( shape->stroke_shp->topY < bbox.y0 )
 700                 bbox.y0=shape->stroke_shp->topY;
 701             if ( shape->stroke_shp->bottomY > bbox.y1 )
 702                 bbox.y1=shape->stroke_shp->bottomY;
 703         }
 704     }
 705     if ( shape->fill_shp ) {
 706         shape->fill_shp->CalcBBox();
 707         shape->fill_shp->leftX=floor(shape->fill_shp->leftX);
 708         shape->fill_shp->rightX=ceil(shape->fill_shp->rightX);
 709         shape->fill_shp->topY=floor(shape->fill_shp->topY);
 710         shape->fill_shp->bottomY=ceil(shape->fill_shp->bottomY);
 711         if ( bbox.x0 >= bbox.x1 ) {
 712             if ( shape->fill_shp->leftX < shape->fill_shp->rightX ) {
 713                 bbox.x0=shape->fill_shp->leftX;
 714                 bbox.x1=shape->fill_shp->rightX;
 715             }
 716         } else {
 717             if ( shape->fill_shp->leftX < bbox.x0 ) bbox.x0=shape->fill_shp->leftX;
 718             if ( shape->fill_shp->rightX > bbox.x1 ) bbox.x1=shape->fill_shp->rightX;
 719         }
 720         if ( bbox.y0 >= bbox.y1 ) {
 721             if ( shape->fill_shp->topY < shape->fill_shp->bottomY ) {
 722                 bbox.y0=shape->fill_shp->topY;
 723                 bbox.y1=shape->fill_shp->bottomY;
 724             }
 725         } else {
 726             if ( shape->fill_shp->topY < bbox.y0 ) bbox.y0=shape->fill_shp->topY;
 727             if ( shape->fill_shp->bottomY > bbox.y1 ) bbox.y1=shape->fill_shp->bottomY;
 728         }
 729     }
 730 }
 731
 732 // cairo outline rendering:
 733 static unsigned int
 734 cairo_arena_shape_render_outline(cairo_t *ct, NRArenaItem *item, NR::Maybe<NR::Rect> area)
 735 {
 736     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 737
 738     if (!ct)
 739         return item->state;
 740
 741     guint32 rgba = NR_ARENA_ITEM(shape)->arena->outlinecolor;
 742     // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 743     // by setting color channels in the "wrong" order
 744     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));
 745
 746     cairo_set_line_width(ct, 0.5);
 747     cairo_set_tolerance(ct, 1.25); // low quality, but good enough for outline mode
 748     cairo_new_path(ct);
 749
 750     feed_curve_to_cairo (ct, SP_CURVE_BPATH(shape->curve), NR::Matrix(shape->ctm), area, true, 0);
 751
 752     cairo_stroke(ct);
 753
 754     return item->state;
 755 }
 756
 757 // cairo stroke rendering (flat color only so far!):
 758 // works on canvas, but wrongs the colors in nonpremul buffers: icons and png export
 759 // (need to switch them to premul before this can be enabled)
 760 void
 761 cairo_arena_shape_render_stroke(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 762 {
 763     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 764     SPStyle const *style = shape->style;
 765
 766     float const scale = NR_MATRIX_DF_EXPANSION(shape->ctm);
 767
 768     if (fabs(shape->_stroke.width * scale) < 0.01)
 769         return;
 770
 771     cairo_t *ct = nr_create_cairo_context (area, pb);
 772
 773     if (!ct)
 774         return;
 775
 776     guint32 rgba;
 777     if ( item->render_opacity ) {
 778         rgba = sp_color_get_rgba32_falpha(&shape->_stroke.paint.color(),
 779                                           shape->_stroke.opacity *
 780                                           SP_SCALE24_TO_FLOAT(style->opacity.value));
 781     } else {
 782         rgba = sp_color_get_rgba32_falpha(&shape->_stroke.paint.color(),
 783                                           shape->_stroke.opacity);
 784     }
 785
 786     // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 787     // by setting color channels in the "wrong" order
 788     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));
 789
 790     float style_width = MAX(0.125, shape->_stroke.width * scale);
 791     cairo_set_line_width(ct, style_width);
 792
 793     switch (shape->_stroke.cap) {
 794         case NRArenaShape::BUTT_CAP:
 795             cairo_set_line_cap(ct, CAIRO_LINE_CAP_BUTT);
 796             break;
 797         case NRArenaShape::ROUND_CAP:
 798             cairo_set_line_cap(ct, CAIRO_LINE_CAP_ROUND);
 799             break;
 800         case NRArenaShape::SQUARE_CAP:
 801             cairo_set_line_cap(ct, CAIRO_LINE_CAP_SQUARE);
 802             break;
 803     }
 804     switch (shape->_stroke.join) {
 805         case NRArenaShape::MITRE_JOIN:
 806             cairo_set_line_join(ct, CAIRO_LINE_JOIN_MITER);
 807             break;
 808         case NRArenaShape::ROUND_JOIN:
 809             cairo_set_line_join(ct, CAIRO_LINE_JOIN_ROUND);
 810             break;
 811         case NRArenaShape::BEVEL_JOIN:
 812             cairo_set_line_join(ct, CAIRO_LINE_JOIN_BEVEL);
 813             break;
 814     }
 815
 816     cairo_set_miter_limit (ct, style->stroke_miterlimit.value);
 817
 818     if (style->stroke_dash.n_dash) {
 819         NRVpathDash dash;
 820         dash.offset = style->stroke_dash.offset * scale;
 821         dash.n_dash = style->stroke_dash.n_dash;
 822         dash.dash = g_new(double, dash.n_dash);
 823         for (int i = 0; i < dash.n_dash; i++) {
 824             dash.dash[i] = style->stroke_dash.dash[i] * scale;
 825         }
 826         cairo_set_dash (ct, dash.dash, dash.n_dash, dash.offset);
 827         g_free(dash.dash);
 828     }
 829
 830     cairo_set_tolerance(ct, 0.1);
 831     cairo_new_path(ct);
 832
 833     feed_curve_to_cairo (ct, SP_CURVE_BPATH(shape->curve), NR::Matrix(shape->ctm), area->upgrade(), true, style_width);
 834
 835     cairo_stroke(ct);
 836
 837     cairo_surface_t *cst = cairo_get_target(ct);
 838     cairo_destroy (ct);
 839     cairo_surface_finish (cst);
 840     cairo_surface_destroy (cst);
 841
 842     pb->empty = FALSE;
 843 }
 844
 845
 846 /**
 847  * Renders the item.  Markers are just composed into the parent buffer.
 848  */
 849 static unsigned int
 850 nr_arena_shape_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags)
 851 {
 852     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 853
 854     if (!shape->curve) return item->state;
 855     if (!shape->style) return item->state;
 856
 857     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == RENDERMODE_OUTLINE);
 858
 859     if (outline) { // cairo outline rendering
 860
 861         pb->empty = FALSE;
 862         unsigned int ret = cairo_arena_shape_render_outline (ct, item, (&pb->area)->upgrade());
 863         if (ret & NR_ARENA_ITEM_STATE_INVALID) return ret;
 864
 865     } else {
 866
 867     if ( shape->delayed_shp ) {
 868         if ( nr_rect_l_test_intersect(area, &item->bbox) ) {
 869             NRGC   tempGC(NULL);
 870             tempGC.transform=shape->ctm;
 871             shape->delayed_shp = false;
 872             nr_arena_shape_update_stroke(shape,&tempGC,&pb->visible_area);
 873             nr_arena_shape_update_fill(shape,&tempGC,&pb->visible_area);
 874 /*      NRRect bbox;
 875         bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 876         nr_arena_shape_add_bboxes(shape,bbox);
 877         item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 878         item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 879         item->bbox.x1 = (gint32)(bbox.x1 + 1.0F);
 880         item->bbox.y1 = (gint32)(bbox.y1 + 1.0F);
 881         shape->approx_bbox=item->bbox;*/
 882         } else {
 883             return item->state;
 884         }
 885     }
 886
 887     SPStyle const *style = shape->style;
 888     if (shape->fill_shp) {
 889         NRPixBlock m;
 890         guint32 rgba;
 891
 892         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 893
 894         // if memory allocation failed, abort render
 895         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 896             nr_pixblock_release (&m);
 897             return (item->state);
 898         }
 899
 900         m.visible_area = pb->visible_area;
 901         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
 902         m.empty = FALSE;
 903
 904         if (shape->_fill.paint.type() == NRArenaShape::Paint::NONE) {
 905             // do not render fill in any way
 906         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::COLOR) {
 907             if ( item->render_opacity ) {
 908                 rgba = sp_color_get_rgba32_falpha(&shape->_fill.paint.color(),
 909                                                   shape->_fill.opacity *
 910                                                   SP_SCALE24_TO_FLOAT(style->opacity.value));
 911             } else {
 912                 rgba = sp_color_get_rgba32_falpha(&shape->_fill.paint.color(),
 913                                                   shape->_fill.opacity);
 914             }
 915             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 916             pb->empty = FALSE;
 917         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::SERVER) {
 918             if (shape->fill_painter) {
 919                 nr_arena_render_paintserver_fill(pb, area, shape->fill_painter, shape->_fill.opacity, &m);
 920             }
 921         }
 922
 923         nr_pixblock_release(&m);
 924     }
 925
 926     if (shape->stroke_shp && shape->_stroke.paint.type() == NRArenaShape::Paint::COLOR) {
 927
 928         // cairo_arena_shape_render_stroke(item, area, pb);
 929
 930         guint32 rgba;
 931         NRPixBlock m;
 932
 933         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 934
 935         // if memory allocation failed, abort render
 936         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 937             nr_pixblock_release (&m);
 938             return (item->state);
 939         }
 940
 941         m.visible_area = pb->visible_area;
 942         nr_pixblock_render_shape_mask_or(m, shape->stroke_shp);
 943         m.empty = FALSE;
 944
 945             if ( item->render_opacity ) {
 946                 rgba = sp_color_get_rgba32_falpha(&shape->_stroke.paint.color(),
 947                                                   shape->_stroke.opacity *
 948                                                   SP_SCALE24_TO_FLOAT(style->opacity.value));
 949             } else {
 950                 rgba = sp_color_get_rgba32_falpha(&shape->_stroke.paint.color(),
 951                                                   shape->_stroke.opacity);
 952             }
 953             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 954             pb->empty = FALSE;
 955
 956         nr_pixblock_release(&m);
 957
 958     } else if (shape->stroke_shp && shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER) {
 959
 960         NRPixBlock m;
 961
 962         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 963
 964         // if memory allocation failed, abort render
 965         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 966             nr_pixblock_release (&m);
 967             return (item->state);
 968         }
 969
 970         m.visible_area = pb->visible_area;
 971         nr_pixblock_render_shape_mask_or(m, shape->stroke_shp);
 972         m.empty = FALSE;
 973
 974         if (shape->stroke_painter) {
 975             nr_arena_render_paintserver_fill(pb, area, shape->stroke_painter, shape->_stroke.opacity, &m);
 976         }
 977
 978         nr_pixblock_release(&m);
 979     }
 980
 981     } // non-cairo non-outline branch
 982
 983     /* Render markers into parent buffer */
 984     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 985         unsigned int ret = nr_arena_item_invoke_render(ct, child, area, pb, flags);
 986         if (ret & NR_ARENA_ITEM_STATE_INVALID) return ret;
 987     }
 988
 989     return item->state;
 990 }
 991
 992
 993 // cairo clipping: this basically works except for the stride-must-be-divisible-by-4 cairo bug;
 994 // reenable this when the bug is fixed and remove the rest of this function
 995 static guint
 996 cairo_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 997 {
 998     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 999     if (!shape->curve) return item->state;
1000
1001         cairo_t *ct = nr_create_cairo_context (area, pb);
1002
1003         if (!ct)
1004             return item->state;
1005
1006         cairo_set_source_rgba(ct, 0, 0, 0, 1);
1007
1008         cairo_new_path(ct);
1009
1010         feed_curve_to_cairo (ct, SP_CURVE_BPATH(shape->curve), NR::Matrix(shape->ctm), (area)->upgrade(), false, 0);
1011
1012         cairo_fill(ct);
1013
1014         cairo_surface_t *cst = cairo_get_target(ct);
1015         cairo_destroy (ct);
1016         cairo_surface_finish (cst);
1017         cairo_surface_destroy (cst);
1018
1019         pb->empty = FALSE;
1020
1021         return item->state;
1022 }
1023
1024
1025 static guint
1026 nr_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
1027 {
1028     //return cairo_arena_shape_clip(item, area, pb);
1029
1030     NRArenaShape *shape = NR_ARENA_SHAPE(item);
1031     if (!shape->curve) return item->state;
1032
1033     if ( shape->delayed_shp || shape->fill_shp == NULL) { // we need a fill shape no matter what
1034         if ( nr_rect_l_test_intersect(area, &item->bbox) ) {
1035             NRGC   tempGC(NULL);
1036             tempGC.transform=shape->ctm;
1037             shape->delayed_shp = false;
1038             nr_arena_shape_update_fill(shape, &tempGC, &pb->visible_area, true);
1039         } else {
1040             return item->state;
1041         }
1042     }
1043
1044     if ( shape->fill_shp ) {
1045         NRPixBlock m;
1046
1047         /* fixme: We can OR in one step (Lauris) */
1048         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
1049
1050         // if memory allocation failed, abort
1051         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
1052             nr_pixblock_release (&m);
1053             return (item->state);
1054         }
1055
1056         m.visible_area = pb->visible_area;
1057         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
1058
1059         for (int y = area->y0; y < area->y1; y++) {
1060             unsigned char *s, *d;
1061             s = NR_PIXBLOCK_PX(&m) + (y - area->y0) * m.rs;
1062             d = NR_PIXBLOCK_PX(pb) + (y - area->y0) * pb->rs;
1063             for (int x = area->x0; x < area->x1; x++) {
1064                 *d = NR_COMPOSEA_111(*s, *d);
1065                 d ++;
1066                 s ++;
1067             }
1068         }
1069         nr_pixblock_release(&m);
1070         pb->empty = FALSE;
1071     }
1072
1073     return item->state;
1074 }
1075
1076 static NRArenaItem *
1077 nr_arena_shape_pick(NRArenaItem *item, NR::Point p, double delta, unsigned int /*sticky*/)
1078 {
1079     NRArenaShape *shape = NR_ARENA_SHAPE(item);
1080
1081     if (shape->repick_after > 0)
1082         shape->repick_after--;
1083
1084     if (shape->repick_after > 0) // we are a slow, huge path. skip this pick, returning what was returned last time
1085         return shape->last_pick;
1086
1087     if (!shape->curve) return NULL;
1088     if (!shape->style) return NULL;
1089     if (SP_SCALE24_TO_FLOAT(shape->style->opacity.value) == 0) // fully transparent, no pick
1090         return NULL;
1091
1092     GTimeVal tstart, tfinish;
1093     g_get_current_time (&tstart);
1094
1095     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == RENDERMODE_OUTLINE);
1096
1097     double width;
1098     if (outline) {
1099         width = 0.5;
1100     } else if (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE && shape->_stroke.opacity > 1e-3) {
1101         float const scale = NR_MATRIX_DF_EXPANSION(&shape->ctm);
1102         width = MAX(0.125, shape->_stroke.width * scale) / 2;
1103     } else {
1104         width = 0;
1105     }
1106
1107     NRBPath bp;
1108     bp.path = SP_CURVE_BPATH(shape->curve);
1109     double dist = NR_HUGE;
1110     int wind = 0;
1111     bool needfill = (shape->_fill.paint.type() != NRArenaShape::Paint::NONE
1112              && shape->_fill.opacity > 1e-3 && !outline);
1113
1114     if (item->arena->canvasarena) {
1115         NR::Rect viewbox = item->arena->canvasarena->item.canvas->getViewbox();
1116         viewbox.growBy (width);
1117         nr_path_matrix_point_bbox_wind_distance(&bp, shape->ctm, p, NULL, needfill? &wind : NULL, &dist, 0.5, &viewbox);
1118     } else {
1119         nr_path_matrix_point_bbox_wind_distance(&bp, shape->ctm, p, NULL, needfill? &wind : NULL, &dist, 0.5, NULL);
1120     }
1121
1122     g_get_current_time (&tfinish);
1123     glong this_pick = (tfinish.tv_sec - tstart.tv_sec) * 1000000 + (tfinish.tv_usec - tstart.tv_usec);
1124     //g_print ("pick time %lu\n", this_pick);
1125
1126     if (this_pick > 10000) { // slow picking, remember to skip several new picks
1127         shape->repick_after = this_pick / 5000;
1128     }
1129
1130     // covered by fill?
1131     if (needfill) {
1132         if (!shape->style->fill_rule.computed) {
1133             if (wind != 0) {
1134                 shape->last_pick = item;
1135                 return item;
1136             }
1137         } else {
1138             if (wind & 0x1) {
1139                 shape->last_pick = item;
1140                 return item;
1141             }
1142         }
1143     }
1144
1145     // close to the edge, as defined by strokewidth and delta?
1146     // this ignores dashing (as if the stroke is solid) and always works as if caps are round
1147     if (needfill || width > 0) { // if either fill or stroke visible,
1148         if ((dist - width) < delta) {
1149             shape->last_pick = item;
1150             return item;
1151         }
1152     }
1153
1154     // if not picked on the shape itself, try its markers
1155     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
1156         NRArenaItem *ret = nr_arena_item_invoke_pick(child, p, delta, 0);
1157         if (ret) {
1158             shape->last_pick = item;
1159             return item;
1160         }
1161     }
1162
1163     shape->last_pick = NULL;
1164     return NULL;
1165 }
1166
1167 /**
1168  *
1169  *  Requests a render of the shape, then if the shape is already a curve it
1170  *  unrefs the old curve; if the new curve is valid it creates a copy of the
1171  *  curve and adds it to the shape.  Finally, it requests an update of the
1172  *  arena for the shape.
1173  */
1174 void nr_arena_shape_set_path(NRArenaShape *shape, SPCurve *curve,bool justTrans)
1175 {
1176     g_return_if_fail(shape != NULL);
1177     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1178
1179     if ( justTrans == false ) {
1180         // dirty cached versions
1181         if ( shape->cached_fill ) {
1182             delete shape->cached_fill;
1183             shape->cached_fill=NULL;
1184         }
1185         if ( shape->cached_stroke ) {
1186             delete shape->cached_stroke;
1187             shape->cached_stroke=NULL;
1188         }
1189     }
1190
1191     nr_arena_item_request_render(NR_ARENA_ITEM(shape));
1192
1193     if (shape->curve) {
1194         sp_curve_unref(shape->curve);
1195         shape->curve = NULL;
1196     }
1197
1198     if (curve) {
1199         shape->curve = curve;
1200         sp_curve_ref(curve);
1201     }
1202
1203     nr_arena_item_request_update(NR_ARENA_ITEM(shape), NR_ARENA_ITEM_STATE_ALL, FALSE);
1204 }
1205
1206 void NRArenaShape::setFill(SPPaintServer *server) {
1207     _fill.paint.set(server);
1208     _invalidateCachedFill();
1209 }
1210
1211 void NRArenaShape::setFill(SPColor const &color) {
1212     _fill.paint.set(color);
1213     _invalidateCachedFill();
1214 }
1215
1216 void NRArenaShape::setFillOpacity(double opacity) {
1217     _fill.opacity = opacity;
1218     _invalidateCachedFill();
1219 }
1220
1221 void NRArenaShape::setFillRule(NRArenaShape::FillRule rule) {
1222     _fill.rule = rule;
1223     _invalidateCachedFill();
1224 }
1225
1226 void NRArenaShape::setStroke(SPPaintServer *server) {
1227     _stroke.paint.set(server);
1228     _invalidateCachedStroke();
1229 }
1230
1231 void NRArenaShape::setStroke(SPColor const &color) {
1232     _stroke.paint.set(color);
1233     _invalidateCachedStroke();
1234 }
1235
1236 void NRArenaShape::setStrokeOpacity(double opacity) {
1237     _stroke.opacity = opacity;
1238     _invalidateCachedStroke();
1239 }
1240
1241 void NRArenaShape::setStrokeWidth(double width) {
1242     _stroke.width = width;
1243     _invalidateCachedStroke();
1244 }
1245
1246 void NRArenaShape::setMitreLimit(double limit) {
1247     _stroke.mitre_limit = limit;
1248     _invalidateCachedStroke();
1249 }
1250
1251 void NRArenaShape::setLineCap(NRArenaShape::CapType cap) {
1252     _stroke.cap = cap;
1253     _invalidateCachedStroke();
1254 }
1255
1256 void NRArenaShape::setLineJoin(NRArenaShape::JoinType join) {
1257     _stroke.join = join;
1258     _invalidateCachedStroke();
1259 }
1260
1261 /** nr_arena_shape_set_style
1262  *
1263  * Unrefs any existing style and ref's to the given one, then requests an update of the arena
1264  */
1265 void
1266 nr_arena_shape_set_style(NRArenaShape *shape, SPStyle *style)
1267 {
1268     g_return_if_fail(shape != NULL);
1269     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1270
1271     if (style) sp_style_ref(style);
1272     if (shape->style) sp_style_unref(shape->style);
1273     shape->style = style;
1274
1275     if ( style->fill.isPaintserver() ) {
1276         shape->setFill(style->getFillPaintServer());
1277     } else if ( style->fill.isColor() ) {
1278         shape->setFill(style->fill.value.color);
1279     } else if ( style->fill.isNone() ) {
1280         shape->setFill(NULL);
1281     } else {
1282         g_assert_not_reached();
1283     }
1284     shape->setFillOpacity(SP_SCALE24_TO_FLOAT(style->fill_opacity.value));
1285     switch (style->fill_rule.computed) {
1286         case SP_WIND_RULE_EVENODD: {
1287             shape->setFillRule(NRArenaShape::EVEN_ODD);
1288             break;
1289         }
1290         case SP_WIND_RULE_NONZERO: {
1291             shape->setFillRule(NRArenaShape::NONZERO);
1292             break;
1293         }
1294         default: {
1295             g_assert_not_reached();
1296         }
1297     }
1298
1299     if ( style->stroke.isPaintserver() ) {
1300         shape->setStroke(style->getStrokePaintServer());
1301     } else if ( style->stroke.isColor() ) {
1302         shape->setStroke(style->stroke.value.color);
1303     } else if ( style->stroke.isNone() ) {
1304         shape->setStroke(NULL);
1305     } else {
1306         g_assert_not_reached();
1307     }
1308     shape->setStrokeWidth(style->stroke_width.computed);
1309     shape->setStrokeOpacity(SP_SCALE24_TO_FLOAT(style->stroke_opacity.value));
1310     switch (style->stroke_linecap.computed) {
1311         case SP_STROKE_LINECAP_ROUND: {
1312             shape->setLineCap(NRArenaShape::ROUND_CAP);
1313             break;
1314         }
1315         case SP_STROKE_LINECAP_SQUARE: {
1316             shape->setLineCap(NRArenaShape::SQUARE_CAP);
1317             break;
1318         }
1319         case SP_STROKE_LINECAP_BUTT: {
1320             shape->setLineCap(NRArenaShape::BUTT_CAP);
1321             break;
1322         }
1323         default: {
1324             g_assert_not_reached();
1325         }
1326     }
1327     switch (style->stroke_linejoin.computed) {
1328         case SP_STROKE_LINEJOIN_ROUND: {
1329             shape->setLineJoin(NRArenaShape::ROUND_JOIN);
1330             break;
1331         }
1332         case SP_STROKE_LINEJOIN_BEVEL: {
1333             shape->setLineJoin(NRArenaShape::BEVEL_JOIN);
1334             break;
1335         }
1336         case SP_STROKE_LINEJOIN_MITER: {
1337             shape->setLineJoin(NRArenaShape::MITRE_JOIN);
1338             break;
1339         }
1340         default: {
1341             g_assert_not_reached();
1342         }
1343     }
1344     shape->setMitreLimit(style->stroke_miterlimit.value);
1345
1346     //if shape has a filter
1347     if (style->filter.set && style->getFilter()) {
1348         if (!shape->filter) {
1349             int primitives = sp_filter_primitive_count(SP_FILTER(style->getFilter()));
1350             shape->filter = new NR::Filter(primitives);
1351         }
1352         sp_filter_build_renderer(SP_FILTER(style->getFilter()), shape->filter);
1353     } else {
1354         //no filter set for this shape
1355         delete shape->filter;
1356         shape->filter = NULL;
1357     }
1358
1359     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1360 }
1361
1362 void
1363 nr_arena_shape_set_paintbox(NRArenaShape *shape, NRRect const *pbox)
1364 {
1365     g_return_if_fail(shape != NULL);
1366     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1367     g_return_if_fail(pbox != NULL);
1368
1369     if ((pbox->x0 < pbox->x1) && (pbox->y0 < pbox->y1)) {
1370         shape->paintbox = *pbox;
1371     } else {
1372         /* fixme: We kill warning, although not sure what to do here (Lauris) */
1373         shape->paintbox.x0 = shape->paintbox.y0 = 0.0F;
1374         shape->paintbox.x1 = shape->paintbox.y1 = 256.0F;
1375     }
1376
1377     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1378 }
1379
1380 void NRArenaShape::setPaintBox(NR::Rect const &pbox)
1381 {
1382     paintbox.x0 = pbox.min()[NR::X];
1383     paintbox.y0 = pbox.min()[NR::Y];
1384     paintbox.x1 = pbox.max()[NR::X];
1385     paintbox.y1 = pbox.max()[NR::Y];
1386
1387     nr_arena_item_request_update(this, NR_ARENA_ITEM_STATE_ALL, FALSE);
1388 }
1389
1390 static void
1391 shape_run_A8_OR(raster_info &dest,void */*data*/,int st,float vst,int en,float ven)
1392 {
1393     if ( st >= en ) return;
1394     if ( vst < 0 ) vst=0;
1395     if ( vst > 1 ) vst=1;
1396     if ( ven < 0 ) ven=0;
1397     if ( ven > 1 ) ven=1;
1398     float   sv=vst;
1399     float   dv=ven-vst;
1400     int     len=en-st;
1401     unsigned char*   d=(unsigned char*)dest.buffer;
1402     d+=(st-dest.startPix);
1403     if ( fabs(dv) < 0.001 ) {
1404         if ( vst > 0.999 ) {
1405             /* Simple copy */
1406             while (len > 0) {
1407                 d[0] = 255;
1408                 d += 1;
1409                 len -= 1;
1410             }
1411         } else {
1412             sv*=256;
1413             unsigned int c0_24=(int)sv;
1414             c0_24&=0xFF;
1415             while (len > 0) {
1416                 /* Draw */
1417                 d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1418                 d += 1;
1419                 len -= 1;
1420             }
1421         }
1422     } else {
1423         if ( en <= st+1 ) {
1424             sv=0.5*(vst+ven);
1425             sv*=256;
1426             unsigned int c0_24=(int)sv;
1427             c0_24&=0xFF;
1428             /* Draw */
1429             d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1430         } else {
1431             dv/=len;
1432             sv+=0.5*dv; // correction trapezoidale
1433             sv*=16777216;
1434             dv*=16777216;
1435             int c0_24 = static_cast<int>(CLAMP(sv, 0, 16777216));
1436             int s0_24 = static_cast<int>(dv);
1437             while (len > 0) {
1438                 unsigned int ca;
1439                 /* Draw */
1440                 ca = c0_24 >> 16;
1441                 if ( ca > 255 ) ca=255;
1442                 d[0] = NR_COMPOSEA_111(ca,d[0]);
1443                 d += 1;
1444                 c0_24 += s0_24;
1445                 c0_24 = CLAMP(c0_24, 0, 16777216);
1446                 len -= 1;
1447             }
1448         }
1449     }
1450 }
1451
1452 void nr_pixblock_render_shape_mask_or(NRPixBlock &m,Shape* theS)
1453 {
1454     theS->CalcBBox();
1455     float l = theS->leftX, r = theS->rightX, t = theS->topY, b = theS->bottomY;
1456     int    il,ir,it,ib;
1457     il=(int)floor(l);
1458     ir=(int)ceil(r);
1459     it=(int)floor(t);
1460     ib=(int)ceil(b);
1461
1462     if ( il >= m.area.x1 || ir <= m.area.x0 || it >= m.area.y1 || ib <= m.area.y0 ) return;
1463     if ( il < m.area.x0 ) il=m.area.x0;
1464     if ( it < m.area.y0 ) it=m.area.y0;
1465     if ( ir > m.area.x1 ) ir=m.area.x1;
1466     if ( ib > m.area.y1 ) ib=m.area.y1;
1467
1468     /* This is the FloatLigne version.  See svn (prior to Apr 2006) for versions using BitLigne or direct BitLigne. */
1469     int    curPt;
1470     float  curY;
1471     theS->BeginQuickRaster(curY, curPt);
1472
1473     FloatLigne *theI = new FloatLigne();
1474     IntLigne *theIL = new IntLigne();
1475
1476     theS->DirectQuickScan(curY, curPt, (float) it, true, 1.0);
1477
1478     char *mdata = (char*)m.data.px;
1479     if ( m.size == NR_PIXBLOCK_SIZE_TINY ) mdata=(char*)m.data.p;
1480     uint32_t *ligStart = ((uint32_t*)(mdata + ((il - m.area.x0) + m.rs * (it - m.area.y0))));
1481     for (int y = it; y < ib; y++) {
1482         theI->Reset();
1483         theS->QuickScan(curY, curPt, ((float)(y+1)), theI, 1.0);
1484         theI->Flatten();
1485         theIL->Copy(theI);
1486
1487         raster_info  dest;
1488         dest.startPix=il;
1489         dest.endPix=ir;
1490         dest.sth=il;
1491         dest.stv=y;
1492         dest.buffer=ligStart;
1493         theIL->Raster(dest, NULL, shape_run_A8_OR);
1494         ligStart=((uint32_t*)(((char*)ligStart)+m.rs));
1495     }
1496     theS->EndQuickRaster();
1497     delete theI;
1498     delete theIL;
1499 }
1500
1501
1502 /*
1503   Local Variables:
1504   mode:c++
1505   c-file-style:"stroustrup"
1506   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1507   indent-tabs-mode:nil
1508   fill-column:99
1509   End:
1510 */
1511 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :