src/display/nr-arena-glyphs.cpp

   1 #define __NR_ARENA_GLYPHS_C__
   2
   3 /*
   4  * RGBA display list system for inkscape
   5  *
   6  * Author:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *
   9  * Copyright (C) 2002 Lauris Kaplinski
  10  *
  11  * Released under GNU GPL
  12  *
  13  */
  14
  15
  16 #ifdef HAVE_CONFIG_H
  17 # include <config.h>
  18 #endif
  19 #include <libnr/nr-blit.h>
  20 #include <libnr/nr-convert2geom.h>
  21 #include <2geom/matrix.h>
  22 #include "../style.h"
  23 #include "nr-arena.h"
  24 #include "nr-arena-glyphs.h"
  25 #include <cairo.h>
  26 #include "inkscape-cairo.h"
  27
  28 #ifdef test_glyph_liv
  29 #include "../display/canvas-bpath.h"
  30 #include <libnrtype/font-instance.h>
  31 #include <libnrtype/raster-glyph.h>
  32 #include <libnrtype/RasterFont.h>
  33
  34 // defined in nr-arena-shape.cpp
  35 void nr_pixblock_render_shape_mask_or(NRPixBlock &m, Shape *theS);
  36 #endif
  37
  38 #ifdef ENABLE_SVG_FONTS
  39 #include "nr-svgfonts.h"
  40 #endif //#ifdef ENABLE_SVG_FONTS
  41
  42 static void nr_arena_glyphs_class_init(NRArenaGlyphsClass *klass);
  43 static void nr_arena_glyphs_init(NRArenaGlyphs *glyphs);
  44 static void nr_arena_glyphs_finalize(NRObject *object);
  45
  46 static guint nr_arena_glyphs_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
  47 static guint nr_arena_glyphs_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
  48 static NRArenaItem *nr_arena_glyphs_pick(NRArenaItem *item, Geom::Point p, double delta, unsigned int sticky);
  49
  50 static NRArenaItemClass *glyphs_parent_class;
  51
  52 NRType
  53 nr_arena_glyphs_get_type(void)
  54 {
  55     static NRType type = 0;
  56     if (!type) {
  57         type = nr_object_register_type(NR_TYPE_ARENA_ITEM,
  58                                        "NRArenaGlyphs",
  59                                        sizeof(NRArenaGlyphsClass),
  60                                        sizeof(NRArenaGlyphs),
  61                                        (void (*)(NRObjectClass *)) nr_arena_glyphs_class_init,
  62                                        (void (*)(NRObject *)) nr_arena_glyphs_init);
  63     }
  64     return type;
  65 }
  66
  67 static void
  68 nr_arena_glyphs_class_init(NRArenaGlyphsClass *klass)
  69 {
  70     NRObjectClass *object_class;
  71     NRArenaItemClass *item_class;
  72
  73     object_class = (NRObjectClass *) klass;
  74     item_class = (NRArenaItemClass *) klass;
  75
  76     glyphs_parent_class = (NRArenaItemClass *) ((NRObjectClass *) klass)->parent;
  77
  78     object_class->finalize = nr_arena_glyphs_finalize;
  79     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaGlyphs>;
  80
  81     item_class->update = nr_arena_glyphs_update;
  82     item_class->clip = nr_arena_glyphs_clip;
  83     item_class->pick = nr_arena_glyphs_pick;
  84 }
  85
  86 static void
  87 nr_arena_glyphs_init(NRArenaGlyphs *glyphs)
  88 {
  89     glyphs->style = NULL;
  90     glyphs->g_transform.setIdentity();
  91     glyphs->font = NULL;
  92     glyphs->glyph = 0;
  93
  94     glyphs->rfont = NULL;
  95     glyphs->sfont = NULL;
  96     glyphs->x = glyphs->y = 0.0;
  97 }
  98
  99 static void
 100 nr_arena_glyphs_finalize(NRObject *object)
 101 {
 102     NRArenaGlyphs *glyphs = static_cast<NRArenaGlyphs *>(object);
 103
 104     if (glyphs->rfont) {
 105         glyphs->rfont->Unref();
 106         glyphs->rfont=NULL;
 107     }
 108     if (glyphs->sfont) {
 109         glyphs->sfont->Unref();
 110         glyphs->sfont=NULL;
 111     }
 112
 113     if (glyphs->font) {
 114         glyphs->font->Unref();
 115         glyphs->font=NULL;
 116     }
 117
 118     if (glyphs->style) {
 119         sp_style_unref(glyphs->style);
 120         glyphs->style = NULL;
 121     }
 122
 123     ((NRObjectClass *) glyphs_parent_class)->finalize(object);
 124 }
 125
 126 static guint
 127 nr_arena_glyphs_update(NRArenaItem *item, NRRectL */*area*/, NRGC *gc, guint /*state*/, guint /*reset*/)
 128 {
 129     NRArenaGlyphs *glyphs;
 130     raster_font *rfont;
 131
 132     glyphs = NR_ARENA_GLYPHS(item);
 133
 134     if (!glyphs->font || !glyphs->style)
 135         return NR_ARENA_ITEM_STATE_ALL;
 136     if ((glyphs->style->fill.isNone()) && (glyphs->style->stroke.isNone()))
 137         return NR_ARENA_ITEM_STATE_ALL;
 138
 139     NRRect bbox;
 140     bbox.x0 = bbox.y0 = NR_HUGE;
 141     bbox.x1 = bbox.y1 = -NR_HUGE;
 142
 143     float const scale = gc->transform.descrim();
 144
 145     if (!glyphs->style->fill.isNone()) {
 146         Geom::Matrix t;
 147         t = glyphs->g_transform * gc->transform;
 148         glyphs->x = t[4];
 149         glyphs->y = t[5];
 150         t[4]=0;
 151         t[5]=0;
 152         rfont = glyphs->font->RasterFont(t, 0);
 153         if (glyphs->rfont) glyphs->rfont->Unref();
 154         glyphs->rfont = rfont;
 155
 156         if (glyphs->style->stroke.isNone() || fabs(glyphs->style->stroke_width.computed * scale) <= 0.01) { // Optimization: do fill bbox only if there's no stroke
 157             NRRect narea;
 158             if ( glyphs->rfont ) glyphs->rfont->BBox(glyphs->glyph, &narea);
 159             bbox.x0 = narea.x0 + glyphs->x;
 160             bbox.y0 = narea.y0 + glyphs->y;
 161             bbox.x1 = narea.x1 + glyphs->x;
 162             bbox.y1 = narea.y1 + glyphs->y;
 163         }
 164     }
 165
 166     if (!glyphs->style->stroke.isNone()) {
 167         /* Build state data */
 168         Geom::Matrix t;
 169         t = glyphs->g_transform * gc->transform;
 170         glyphs->x = t[4];
 171         glyphs->y = t[5];
 172         t[4]=0;
 173         t[5]=0;
 174
 175         if ( fabs(glyphs->style->stroke_width.computed * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
 176             font_style nstyl;
 177             nstyl.transform = t;
 178             nstyl.stroke_width=MAX(0.125, glyphs->style->stroke_width.computed * scale);
 179             if ( glyphs->style->stroke_linecap.computed == SP_STROKE_LINECAP_BUTT ) nstyl.stroke_cap=butt_straight;
 180             if ( glyphs->style->stroke_linecap.computed == SP_STROKE_LINECAP_ROUND ) nstyl.stroke_cap=butt_round;
 181             if ( glyphs->style->stroke_linecap.computed == SP_STROKE_LINECAP_SQUARE ) nstyl.stroke_cap=butt_square;
 182             if ( glyphs->style->stroke_linejoin.computed == SP_STROKE_LINEJOIN_MITER ) nstyl.stroke_join=join_pointy;
 183             if ( glyphs->style->stroke_linejoin.computed == SP_STROKE_LINEJOIN_ROUND ) nstyl.stroke_join=join_round;
 184             if ( glyphs->style->stroke_linejoin.computed == SP_STROKE_LINEJOIN_BEVEL ) nstyl.stroke_join=join_straight;
 185             nstyl.stroke_miter_limit = glyphs->style->stroke_miterlimit.value;
 186             nstyl.nbDash=0;
 187             nstyl.dash_offset = 0;
 188             nstyl.dashes=NULL;
 189             if ( glyphs->style->stroke_dash.n_dash > 0 ) {
 190                 nstyl.dash_offset = glyphs->style->stroke_dash.offset * scale;
 191                 nstyl.nbDash=glyphs->style->stroke_dash.n_dash;
 192                 nstyl.dashes=(double*)malloc(nstyl.nbDash*sizeof(double));
 193                 for (int i = 0; i < nstyl.nbDash; i++) nstyl.dashes[i]= glyphs->style->stroke_dash.dash[i] * scale;
 194             }
 195             rfont = glyphs->font->RasterFont( nstyl);
 196             if ( nstyl.dashes ) free(nstyl.dashes);
 197             if (glyphs->sfont) glyphs->sfont->Unref();
 198             glyphs->sfont = rfont;
 199
 200             NRRect narea;
 201             if ( glyphs->sfont ) glyphs->sfont->BBox(glyphs->glyph, &narea);
 202             narea.x0-=nstyl.stroke_width;
 203             narea.y0-=nstyl.stroke_width;
 204             narea.x1+=nstyl.stroke_width;
 205             narea.y1+=nstyl.stroke_width;
 206             bbox.x0 = narea.x0 + glyphs->x;
 207             bbox.y0 = narea.y0 + glyphs->y;
 208             bbox.x1 = narea.x1 + glyphs->x;
 209             bbox.y1 = narea.y1 + glyphs->y;
 210         }
 211     }
 212     if (nr_rect_d_test_empty(bbox)) return NR_ARENA_ITEM_STATE_ALL;
 213
 214     item->bbox.x0 = (gint32)(bbox.x0 - 1.0);
 215     item->bbox.y0 = (gint32)(bbox.y0 - 1.0);
 216     item->bbox.x1 = (gint32)(bbox.x1 + 1.0);
 217     item->bbox.y1 = (gint32)(bbox.y1 + 1.0);
 218
 219     return NR_ARENA_ITEM_STATE_ALL;
 220 }
 221
 222 static guint
 223 nr_arena_glyphs_clip(NRArenaItem *item, NRRectL */*area*/, NRPixBlock */*pb*/)
 224 {
 225     NRArenaGlyphs *glyphs;
 226
 227     glyphs = NR_ARENA_GLYPHS(item);
 228
 229     if (!glyphs->font ) return item->state;
 230
 231     /* TODO : render to greyscale pixblock provided for clipping */
 232
 233     return item->state;
 234 }
 235
 236 static NRArenaItem *
 237 nr_arena_glyphs_pick(NRArenaItem *item, Geom::Point p, gdouble /*delta*/, unsigned int /*sticky*/)
 238 {
 239     NRArenaGlyphs *glyphs;
 240
 241     glyphs = NR_ARENA_GLYPHS(item);
 242
 243     if (!glyphs->font ) return NULL;
 244     if (!glyphs->style) return NULL;
 245
 246     double const x = p[Geom::X];
 247     double const y = p[Geom::Y];
 248     /* With text we take a simple approach: pick if the point is in a characher bbox */
 249     if ((x >= item->bbox.x0) && (y >= item->bbox.y0) && (x <= item->bbox.x1) && (y <= item->bbox.y1)) return item;
 250
 251     return NULL;
 252 }
 253
 254 void
 255 nr_arena_glyphs_set_path(NRArenaGlyphs *glyphs, SPCurve */*curve*/, unsigned int /*lieutenant*/, font_instance *font, gint glyph, Geom::Matrix const *transform)
 256 {
 257     nr_return_if_fail(glyphs != NULL);
 258     nr_return_if_fail(NR_IS_ARENA_GLYPHS(glyphs));
 259
 260     nr_arena_item_request_render(NR_ARENA_ITEM(glyphs));
 261
 262     if (transform) {
 263         glyphs->g_transform = *transform;
 264     } else {
 265         glyphs->g_transform.setIdentity();
 266     }
 267
 268     if (font) font->Ref();
 269     if (glyphs->font) glyphs->font->Unref();
 270     glyphs->font=font;
 271     glyphs->glyph = glyph;
 272
 273     nr_arena_item_request_update(NR_ARENA_ITEM(glyphs), NR_ARENA_ITEM_STATE_ALL, FALSE);
 274 }
 275
 276 void
 277 nr_arena_glyphs_set_style(NRArenaGlyphs *glyphs, SPStyle *style)
 278 {
 279     nr_return_if_fail(glyphs != NULL);
 280     nr_return_if_fail(NR_IS_ARENA_GLYPHS(glyphs));
 281
 282     if (style) sp_style_ref(style);
 283     if (glyphs->style) sp_style_unref(glyphs->style);
 284     glyphs->style = style;
 285
 286     nr_arena_item_request_update(NR_ARENA_ITEM(glyphs), NR_ARENA_ITEM_STATE_ALL, FALSE);
 287 }
 288
 289 static guint
 290 nr_arena_glyphs_fill_mask(NRArenaGlyphs *glyphs, NRRectL *area, NRPixBlock *m)
 291 {
 292     /* fixme: area == m->area, so merge these */
 293
 294     NRArenaItem *item = NR_ARENA_ITEM(glyphs);
 295
 296     if (glyphs->rfont && nr_rect_l_test_intersect_ptr(area, &item->bbox)) {
 297         raster_glyph *g = glyphs->rfont->GetGlyph(glyphs->glyph);
 298         if ( g ) g->Blit(Geom::Point(glyphs->x, glyphs->y), *m);
 299     }
 300
 301     return item->state;
 302 }
 303
 304 static guint
 305 nr_arena_glyphs_stroke_mask(NRArenaGlyphs *glyphs, NRRectL *area, NRPixBlock *m)
 306 {
 307     NRArenaItem *item = NR_ARENA_ITEM(glyphs);
 308     if (glyphs->sfont && nr_rect_l_test_intersect_ptr(area, &item->bbox)) {
 309         raster_glyph *g=glyphs->sfont->GetGlyph(glyphs->glyph);
 310         if ( g ) g->Blit(Geom::Point(glyphs->x, glyphs->y),*m);
 311     }
 312
 313     return item->state;
 314 }
 315
 316 static void nr_arena_glyphs_group_class_init(NRArenaGlyphsGroupClass *klass);
 317 static void nr_arena_glyphs_group_init(NRArenaGlyphsGroup *group);
 318 static void nr_arena_glyphs_group_finalize(NRObject *object);
 319
 320 static guint nr_arena_glyphs_group_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
 321 static unsigned int nr_arena_glyphs_group_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);
 322 static unsigned int nr_arena_glyphs_group_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
 323 static NRArenaItem *nr_arena_glyphs_group_pick(NRArenaItem *item, Geom::Point p, gdouble delta, unsigned int sticky);
 324
 325 static NRArenaGroupClass *group_parent_class;
 326
 327 NRType
 328 nr_arena_glyphs_group_get_type(void)
 329 {
 330     static NRType type = 0;
 331     if (!type) {
 332         type = nr_object_register_type(NR_TYPE_ARENA_GROUP,
 333                                        "NRArenaGlyphsGroup",
 334                                        sizeof(NRArenaGlyphsGroupClass),
 335                                        sizeof(NRArenaGlyphsGroup),
 336                                        (void (*)(NRObjectClass *)) nr_arena_glyphs_group_class_init,
 337                                        (void (*)(NRObject *)) nr_arena_glyphs_group_init);
 338     }
 339     return type;
 340 }
 341
 342 static void
 343 nr_arena_glyphs_group_class_init(NRArenaGlyphsGroupClass *klass)
 344 {
 345     NRObjectClass *object_class;
 346     NRArenaItemClass *item_class;
 347
 348     object_class = (NRObjectClass *) klass;
 349     item_class = (NRArenaItemClass *) klass;
 350
 351     group_parent_class = (NRArenaGroupClass *) ((NRObjectClass *) klass)->parent;
 352
 353     object_class->finalize = nr_arena_glyphs_group_finalize;
 354     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaGlyphsGroup>;
 355
 356     item_class->update = nr_arena_glyphs_group_update;
 357     item_class->render = nr_arena_glyphs_group_render;
 358     item_class->clip = nr_arena_glyphs_group_clip;
 359     item_class->pick = nr_arena_glyphs_group_pick;
 360 }
 361
 362 static void
 363 nr_arena_glyphs_group_init(NRArenaGlyphsGroup *group)
 364 {
 365     group->style = NULL;
 366     group->paintbox.x0 = group->paintbox.y0 = 0.0F;
 367     group->paintbox.x1 = group->paintbox.y1 = 1.0F;
 368
 369     group->fill_painter = NULL;
 370     group->stroke_painter = NULL;
 371 }
 372
 373 static void
 374 nr_arena_glyphs_group_finalize(NRObject *object)
 375 {
 376     NRArenaGlyphsGroup *group=static_cast<NRArenaGlyphsGroup *>(object);
 377
 378     if (group->fill_painter) {
 379         sp_painter_free(group->fill_painter);
 380         group->fill_painter = NULL;
 381     }
 382
 383     if (group->stroke_painter) {
 384         sp_painter_free(group->stroke_painter);
 385         group->stroke_painter = NULL;
 386     }
 387
 388     if (group->style) {
 389         sp_style_unref(group->style);
 390         group->style = NULL;
 391     }
 392
 393     ((NRObjectClass *) group_parent_class)->finalize(object);
 394 }
 395
 396 static guint
 397 nr_arena_glyphs_group_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset)
 398 {
 399     NRArenaGlyphsGroup *group = NR_ARENA_GLYPHS_GROUP(item);
 400
 401     if (group->fill_painter) {
 402         sp_painter_free(group->fill_painter);
 403         group->fill_painter = NULL;
 404     }
 405
 406     if (group->stroke_painter) {
 407         sp_painter_free(group->stroke_painter);
 408         group->stroke_painter = NULL;
 409     }
 410
 411     item->render_opacity = TRUE;
 412     if (group->style->fill.isPaintserver()) {
 413         group->fill_painter = sp_paint_server_painter_new(SP_STYLE_FILL_SERVER(group->style),
 414                                                           gc->transform, gc->parent->transform,
 415                                                           &group->paintbox);
 416         item->render_opacity = FALSE;
 417     }
 418
 419     if (group->style->stroke.isPaintserver()) {
 420         group->stroke_painter = sp_paint_server_painter_new(SP_STYLE_STROKE_SERVER(group->style),
 421                                                             gc->transform, gc->parent->transform,
 422                                                             &group->paintbox);
 423         item->render_opacity = FALSE;
 424     }
 425
 426     if ( item->render_opacity == TRUE && !group->style->stroke.isNone() && !group->style->fill.isNone() ) {
 427         item->render_opacity=FALSE;
 428     }
 429
 430     if (((NRArenaItemClass *) group_parent_class)->update)
 431         return ((NRArenaItemClass *) group_parent_class)->update(item, area, gc, state, reset);
 432
 433     return NR_ARENA_ITEM_STATE_ALL;
 434 }
 435
 436
 437 static unsigned int
 438 nr_arena_glyphs_group_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int /*flags*/)
 439 {
 440     NRArenaItem *child;
 441
 442     NRArenaGroup *group = NR_ARENA_GROUP(item);
 443     NRArenaGlyphsGroup *ggroup = NR_ARENA_GLYPHS_GROUP(item);
 444     SPStyle const *style = ggroup->style;
 445
 446     guint ret = item->state;
 447
 448     if (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE) {
 449
 450         if (!ct)
 451             return item->state;
 452
 453         guint32 rgba = item->arena->outlinecolor;
 454         // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 455         // by setting color channels in the "wrong" order
 456         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));
 457         cairo_set_tolerance(ct, 1.25); // low quality, but good enough for outline mode
 458
 459         for (child = group->children; child != NULL; child = child->next) {
 460             NRArenaGlyphs *g = NR_ARENA_GLYPHS(child);
 461
 462             Geom::PathVector const * pathv = g->font->PathVector(g->glyph);
 463
 464             cairo_new_path(ct);
 465             Geom::Matrix transform = g->g_transform * group->ctm;
 466             feed_pathvector_to_cairo (ct, *pathv, transform, to_2geom((pb->area).upgrade()), false, 0);
 467             cairo_fill(ct);
 468             pb->empty = FALSE;
 469         }
 470
 471         return ret;
 472     }
 473
 474
 475
 476     /* Fill */
 477     if (!style->fill.isNone() || item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE) {
 478         NRPixBlock m;
 479         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 480
 481         // if memory allocation failed, abort
 482         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 483             nr_pixblock_release (&m);
 484             return (item->state);
 485         }
 486
 487         m.visible_area = pb->visible_area;
 488
 489         /* Render children fill mask */
 490         for (child = group->children; child != NULL; child = child->next) {
 491             ret = nr_arena_glyphs_fill_mask(NR_ARENA_GLYPHS(child), area, &m);
 492             if (!(ret & NR_ARENA_ITEM_STATE_RENDER)) {
 493                 nr_pixblock_release(&m);
 494                 return ret;
 495             }
 496         }
 497
 498         /* Composite into buffer */
 499         if (style->fill.isPaintserver()) {
 500             if (ggroup->fill_painter) {
 501                 nr_arena_render_paintserver_fill(pb, area, ggroup->fill_painter, SP_SCALE24_TO_FLOAT(style->fill_opacity.value), &m);
 502             }
 503         } else if (style->fill.isColor() || item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE) {
 504             guint32 rgba;
 505             if (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE) {
 506                 // In outline mode, render fill only, using outlinecolor
 507                 rgba = item->arena->outlinecolor;
 508             } else if ( item->render_opacity ) {
 509                 rgba = style->fill.value.color.toRGBA32( SP_SCALE24_TO_FLOAT(style->fill_opacity.value) *
 510                                                          SP_SCALE24_TO_FLOAT(style->opacity.value) );
 511             } else {
 512                 rgba = style->fill.value.color.toRGBA32( SP_SCALE24_TO_FLOAT(style->fill_opacity.value) );
 513             }
 514             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 515             pb->empty = FALSE;
 516         }
 517
 518         nr_pixblock_release(&m);
 519     }
 520
 521     /* Stroke */
 522     if (!style->stroke.isNone() && !(item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE)) {
 523         NRPixBlock m;
 524         guint32 rgba;
 525         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 526
 527         // if memory allocation failed, abort
 528         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 529             nr_pixblock_release (&m);
 530             return (item->state);
 531         }
 532
 533         m.visible_area = pb->visible_area;
 534         /* Render children stroke mask */
 535         for (child = group->children; child != NULL; child = child->next) {
 536             ret = nr_arena_glyphs_stroke_mask(NR_ARENA_GLYPHS(child), area, &m);
 537             if (!(ret & NR_ARENA_ITEM_STATE_RENDER)) {
 538                 nr_pixblock_release(&m);
 539                 return ret;
 540             }
 541         }
 542         /* Composite into buffer */
 543         if (style->stroke.isPaintserver()) {
 544             if (ggroup->stroke_painter) {
 545                 nr_arena_render_paintserver_fill(pb, area, ggroup->stroke_painter, SP_SCALE24_TO_FLOAT(style->stroke_opacity.value), &m);
 546             }
 547         } else if (style->stroke.isColor()) {
 548             if ( item->render_opacity ) {
 549                 rgba = style->stroke.value.color.toRGBA32( SP_SCALE24_TO_FLOAT(style->stroke_opacity.value) *
 550                                                            SP_SCALE24_TO_FLOAT(style->opacity.value) );
 551             } else {
 552                 rgba = style->stroke.value.color.toRGBA32( SP_SCALE24_TO_FLOAT(style->stroke_opacity.value) );
 553             }
 554             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 555             pb->empty = FALSE;
 556         } else {
 557             // nothing
 558         }
 559         nr_pixblock_release(&m);
 560     }
 561
 562     return ret;
 563 }
 564
 565 static unsigned int
 566 nr_arena_glyphs_group_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 567 {
 568     NRArenaGroup *group = NR_ARENA_GROUP(item);
 569
 570     guint ret = item->state;
 571
 572     /* Render children fill mask */
 573     for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
 574         ret = nr_arena_glyphs_fill_mask(NR_ARENA_GLYPHS(child), area, pb);
 575         if (!(ret & NR_ARENA_ITEM_STATE_RENDER)) return ret;
 576     }
 577
 578     return ret;
 579 }
 580
 581 static NRArenaItem *
 582 nr_arena_glyphs_group_pick(NRArenaItem *item, Geom::Point p, gdouble delta, unsigned int sticky)
 583 {
 584     NRArenaItem *picked = NULL;
 585
 586     if (((NRArenaItemClass *) group_parent_class)->pick)
 587         picked = ((NRArenaItemClass *) group_parent_class)->pick(item, p, delta, sticky);
 588
 589     if (picked) picked = item;
 590
 591     return picked;
 592 }
 593
 594 void
 595 nr_arena_glyphs_group_clear(NRArenaGlyphsGroup *sg)
 596 {
 597     NRArenaGroup *group = NR_ARENA_GROUP(sg);
 598
 599     nr_arena_item_request_render(NR_ARENA_ITEM(group));
 600
 601     while (group->children) {
 602         nr_arena_item_remove_child(NR_ARENA_ITEM(group), group->children);
 603     }
 604 }
 605
 606 void
 607 nr_arena_glyphs_group_add_component(NRArenaGlyphsGroup *sg, font_instance *font, int glyph, Geom::Matrix const &transform)
 608 {
 609     NRArenaGroup *group;
 610
 611     group = NR_ARENA_GROUP(sg);
 612
 613     Geom::PathVector const * pathv = ( font
 614                                        ? font->PathVector(glyph)
 615                                        : NULL );
 616     if ( pathv ) {
 617         nr_arena_item_request_render(NR_ARENA_ITEM(group));
 618
 619         NRArenaItem *new_arena = NRArenaGlyphs::create(group->arena);
 620         nr_arena_item_append_child(NR_ARENA_ITEM(group), new_arena);
 621         nr_arena_item_unref(new_arena);
 622         nr_arena_glyphs_set_path(NR_ARENA_GLYPHS(new_arena), NULL, FALSE, font, glyph, &transform);
 623         nr_arena_glyphs_set_style(NR_ARENA_GLYPHS(new_arena), sg->style);
 624     }
 625 }
 626
 627 void
 628 nr_arena_glyphs_group_set_style(NRArenaGlyphsGroup *sg, SPStyle *style)
 629 {
 630     nr_return_if_fail(sg != NULL);
 631     nr_return_if_fail(NR_IS_ARENA_GLYPHS_GROUP(sg));
 632
 633     NRArenaGroup *group = NR_ARENA_GROUP(sg);
 634
 635     if (style) sp_style_ref(style);
 636     if (sg->style) sp_style_unref(sg->style);
 637     sg->style = style;
 638
 639     for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
 640         nr_return_if_fail(NR_IS_ARENA_GLYPHS(child));
 641         nr_arena_glyphs_set_style(NR_ARENA_GLYPHS(child), sg->style);
 642     }
 643
 644     nr_arena_item_request_update(NR_ARENA_ITEM(sg), NR_ARENA_ITEM_STATE_ALL, FALSE);
 645 }
 646
 647 void
 648 nr_arena_glyphs_group_set_paintbox(NRArenaGlyphsGroup *gg, NRRect const *pbox)
 649 {
 650     nr_return_if_fail(gg != NULL);
 651     nr_return_if_fail(NR_IS_ARENA_GLYPHS_GROUP(gg));
 652     nr_return_if_fail(pbox != NULL);
 653
 654     if ((pbox->x0 < pbox->x1) && (pbox->y0 < pbox->y1)) {
 655         gg->paintbox.x0 = pbox->x0;
 656         gg->paintbox.y0 = pbox->y0;
 657         gg->paintbox.x1 = pbox->x1;
 658         gg->paintbox.y1 = pbox->y1;
 659     } else {
 660         /* fixme: We kill warning, although not sure what to do here (Lauris) */
 661         gg->paintbox.x0 = gg->paintbox.y0 = 0.0F;
 662         gg->paintbox.x1 = gg->paintbox.y1 = 256.0F;
 663     }
 664
 665     nr_arena_item_request_update(NR_ARENA_ITEM(gg), NR_ARENA_ITEM_STATE_ALL, FALSE);
 666 }
 667
 668
 669 /*
 670   Local Variables:
 671   mode:c++
 672   c-file-style:"stroustrup"
 673   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 674   indent-tabs-mode:nil
 675   fill-column:99
 676   End:
 677 */
 678 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :