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-path.h>
  21 #include <libnr/n-art-bpath.h>
  22 #include <libnr/nr-matrix-ops.h>
  23 #include <libnr/nr-matrix-fns.h>
  24 #include "../style.h"
  25 #include "nr-arena.h"
  26 #include "nr-arena-glyphs.h"
  27 #include <cairo.h>
  28 #include "inkscape-cairo.h"
  29
  30 #ifdef test_glyph_liv
  31 #include "../display/canvas-bpath.h"
  32 #include <libnrtype/font-instance.h>
  33 #include <libnrtype/raster-glyph.h>
  34 #include <libnrtype/RasterFont.h>
  35
  36 // defined in nr-arena-shape.cpp
  37 void nr_pixblock_render_shape_mask_or(NRPixBlock &m, Shape *theS);
  38 #endif
  39
  40 static void nr_arena_glyphs_class_init(NRArenaGlyphsClass *klass);
  41 static void nr_arena_glyphs_init(NRArenaGlyphs *glyphs);
  42 static void nr_arena_glyphs_finalize(NRObject *object);
  43
  44 static guint nr_arena_glyphs_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
  45 static guint nr_arena_glyphs_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
  46 static NRArenaItem *nr_arena_glyphs_pick(NRArenaItem *item, NR::Point p, double delta, unsigned int sticky);
  47
  48 static NRArenaItemClass *glyphs_parent_class;
  49
  50 NRType
  51 nr_arena_glyphs_get_type(void)
  52 {
  53     static NRType type = 0;
  54     if (!type) {
  55         type = nr_object_register_type(NR_TYPE_ARENA_ITEM,
  56                                        "NRArenaGlyphs",
  57                                        sizeof(NRArenaGlyphsClass),
  58                                        sizeof(NRArenaGlyphs),
  59                                        (void (*)(NRObjectClass *)) nr_arena_glyphs_class_init,
  60                                        (void (*)(NRObject *)) nr_arena_glyphs_init);
  61     }
  62     return type;
  63 }
  64
  65 static void
  66 nr_arena_glyphs_class_init(NRArenaGlyphsClass *klass)
  67 {
  68     NRObjectClass *object_class;
  69     NRArenaItemClass *item_class;
  70
  71     object_class = (NRObjectClass *) klass;
  72     item_class = (NRArenaItemClass *) klass;
  73
  74     glyphs_parent_class = (NRArenaItemClass *) ((NRObjectClass *) klass)->parent;
  75
  76     object_class->finalize = nr_arena_glyphs_finalize;
  77     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaGlyphs>;
  78
  79     item_class->update = nr_arena_glyphs_update;
  80     item_class->clip = nr_arena_glyphs_clip;
  81     item_class->pick = nr_arena_glyphs_pick;
  82 }
  83
  84 static void
  85 nr_arena_glyphs_init(NRArenaGlyphs *glyphs)
  86 {
  87     glyphs->style = NULL;
  88     nr_matrix_set_identity(&glyphs->g_transform);
  89     glyphs->font = NULL;
  90     glyphs->glyph = 0;
  91
  92     glyphs->rfont = NULL;
  93     glyphs->sfont = NULL;
  94     glyphs->x = glyphs->y = 0.0;
  95 }
  96
  97 static void
  98 nr_arena_glyphs_finalize(NRObject *object)
  99 {
 100     NRArenaGlyphs *glyphs = static_cast<NRArenaGlyphs *>(object);
 101
 102     if (glyphs->rfont) {
 103         glyphs->rfont->Unref();
 104         glyphs->rfont=NULL;
 105     }
 106     if (glyphs->sfont) {
 107         glyphs->sfont->Unref();
 108         glyphs->sfont=NULL;
 109     }
 110
 111     if (glyphs->font) {
 112         glyphs->font->Unref();
 113         glyphs->font=NULL;
 114     }
 115
 116     if (glyphs->style) {
 117         sp_style_unref(glyphs->style);
 118         glyphs->style = NULL;
 119     }
 120
 121     ((NRObjectClass *) glyphs_parent_class)->finalize(object);
 122 }
 123
 124 static guint
 125 nr_arena_glyphs_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset)
 126 {
 127     NRArenaGlyphs *glyphs;
 128     raster_font *rfont;
 129
 130     glyphs = NR_ARENA_GLYPHS(item);
 131
 132     if (!glyphs->font || !glyphs->style) return NR_ARENA_ITEM_STATE_ALL;
 133     if ((glyphs->style->fill.type == SP_PAINT_TYPE_NONE) && (glyphs->style->stroke.type == SP_PAINT_TYPE_NONE)) return NR_ARENA_ITEM_STATE_ALL;
 134
 135     NRRect bbox;
 136     bbox.x0 = bbox.y0 = NR_HUGE;
 137     bbox.x1 = bbox.y1 = -NR_HUGE;
 138
 139     float const scale = NR_MATRIX_DF_EXPANSION(&gc->transform);
 140
 141     if (glyphs->style->fill.type != SP_PAINT_TYPE_NONE) {
 142         NRMatrix t;
 143         nr_matrix_multiply(&t, &glyphs->g_transform, &gc->transform);
 144         glyphs->x = t.c[4];
 145         glyphs->y = t.c[5];
 146         t.c[4]=0;
 147         t.c[5]=0;
 148         rfont = glyphs->font->RasterFont(t, 0);
 149         if (glyphs->rfont) glyphs->rfont->Unref();
 150         glyphs->rfont = rfont;
 151
 152         if (glyphs->style->stroke.type == SP_PAINT_TYPE_NONE || fabs(glyphs->style->stroke_width.computed * scale) <= 0.01) { // Optimization: do fill bbox only if there's no stroke
 153             NRRect narea;
 154             if ( glyphs->rfont ) glyphs->rfont->BBox(glyphs->glyph, &narea);
 155             bbox.x0 = narea.x0 + glyphs->x;
 156             bbox.y0 = narea.y0 + glyphs->y;
 157             bbox.x1 = narea.x1 + glyphs->x;
 158             bbox.y1 = narea.y1 + glyphs->y;
 159         }
 160     }
 161
 162     if (glyphs->style->stroke.type != SP_PAINT_TYPE_NONE) {
 163         /* Build state data */
 164         NRMatrix t;
 165         nr_matrix_multiply(&t, &glyphs->g_transform, &gc->transform);
 166         glyphs->x = t.c[4];
 167         glyphs->y = t.c[5];
 168         t.c[4]=0;
 169         t.c[5]=0;
 170
 171         if ( fabs(glyphs->style->stroke_width.computed * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
 172             font_style nstyl;
 173             nstyl.transform = t;
 174             nstyl.stroke_width=MAX(0.125, glyphs->style->stroke_width.computed * scale);
 175             if ( glyphs->style->stroke_linecap.computed == SP_STROKE_LINECAP_BUTT ) nstyl.stroke_cap=butt_straight;
 176             if ( glyphs->style->stroke_linecap.computed == SP_STROKE_LINECAP_ROUND ) nstyl.stroke_cap=butt_round;
 177             if ( glyphs->style->stroke_linecap.computed == SP_STROKE_LINECAP_SQUARE ) nstyl.stroke_cap=butt_square;
 178             if ( glyphs->style->stroke_linejoin.computed == SP_STROKE_LINEJOIN_MITER ) nstyl.stroke_join=join_pointy;
 179             if ( glyphs->style->stroke_linejoin.computed == SP_STROKE_LINEJOIN_ROUND ) nstyl.stroke_join=join_round;
 180             if ( glyphs->style->stroke_linejoin.computed == SP_STROKE_LINEJOIN_BEVEL ) nstyl.stroke_join=join_straight;
 181             nstyl.stroke_miter_limit = glyphs->style->stroke_miterlimit.value;
 182             nstyl.nbDash=0;
 183             nstyl.dashes=NULL;
 184             if ( glyphs->style->stroke_dash.n_dash > 0 ) {
 185                 nstyl.nbDash=glyphs->style->stroke_dash.n_dash;
 186                 nstyl.dashes=(double*)malloc(nstyl.nbDash*sizeof(double));
 187                 for (int i = 0; i < nstyl.nbDash; i++) nstyl.dashes[i]= glyphs->style->stroke_dash.dash[i] * scale;
 188             }
 189             rfont = glyphs->font->RasterFont( nstyl);
 190             if ( nstyl.dashes ) free(nstyl.dashes);
 191             if (glyphs->sfont) glyphs->sfont->Unref();
 192             glyphs->sfont = rfont;
 193
 194             NRRect narea;
 195             if ( glyphs->sfont ) glyphs->sfont->BBox(glyphs->glyph, &narea);
 196             narea.x0-=nstyl.stroke_width;
 197             narea.y0-=nstyl.stroke_width;
 198             narea.x1+=nstyl.stroke_width;
 199             narea.y1+=nstyl.stroke_width;
 200             bbox.x0 = narea.x0 + glyphs->x;
 201             bbox.y0 = narea.y0 + glyphs->y;
 202             bbox.x1 = narea.x1 + glyphs->x;
 203             bbox.y1 = narea.y1 + glyphs->y;
 204         }
 205     }
 206     if (nr_rect_d_test_empty(&bbox)) return NR_ARENA_ITEM_STATE_ALL;
 207
 208     item->bbox.x0 = (gint32)(bbox.x0 - 1.0);
 209     item->bbox.y0 = (gint32)(bbox.y0 - 1.0);
 210     item->bbox.x1 = (gint32)(bbox.x1 + 1.0);
 211     item->bbox.y1 = (gint32)(bbox.y1 + 1.0);
 212     nr_arena_request_render_rect(item->arena, &item->bbox);
 213
 214     return NR_ARENA_ITEM_STATE_ALL;
 215 }
 216
 217 static guint
 218 nr_arena_glyphs_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 219 {
 220     NRArenaGlyphs *glyphs;
 221
 222     glyphs = NR_ARENA_GLYPHS(item);
 223
 224     if (!glyphs->font ) return item->state;
 225
 226     /* TODO : render to greyscale pixblock provided for clipping */
 227
 228     return item->state;
 229 }
 230
 231 static NRArenaItem *
 232 nr_arena_glyphs_pick(NRArenaItem *item, NR::Point p, gdouble delta, unsigned int sticky)
 233 {
 234     NRArenaGlyphs *glyphs;
 235
 236     glyphs = NR_ARENA_GLYPHS(item);
 237
 238     if (!glyphs->font ) return NULL;
 239     if (!glyphs->style) return NULL;
 240
 241     double const x = p[NR::X];
 242     double const y = p[NR::Y];
 243     /* With text we take a simple approach: pick if the point is in a characher bbox */
 244     if ((x >= item->bbox.x0) && (y >= item->bbox.y0) && (x <= item->bbox.x1) && (y <= item->bbox.y1)) return item;
 245
 246     return NULL;
 247 }
 248
 249 void
 250 nr_arena_glyphs_set_path(NRArenaGlyphs *glyphs, SPCurve *curve, unsigned int lieutenant, font_instance *font, gint glyph, NRMatrix const *transform)
 251 {
 252     nr_return_if_fail(glyphs != NULL);
 253     nr_return_if_fail(NR_IS_ARENA_GLYPHS(glyphs));
 254
 255     nr_arena_item_request_render(NR_ARENA_ITEM(glyphs));
 256
 257     if (transform) {
 258         glyphs->g_transform = *transform;
 259     } else {
 260         nr_matrix_set_identity(&glyphs->g_transform);
 261     }
 262
 263     if (font) font->Ref();
 264     if (glyphs->font) glyphs->font->Unref();
 265     glyphs->font=font;
 266     glyphs->glyph = glyph;
 267
 268     nr_arena_item_request_update(NR_ARENA_ITEM(glyphs), NR_ARENA_ITEM_STATE_ALL, FALSE);
 269 }
 270
 271 void
 272 nr_arena_glyphs_set_style(NRArenaGlyphs *glyphs, SPStyle *style)
 273 {
 274     nr_return_if_fail(glyphs != NULL);
 275     nr_return_if_fail(NR_IS_ARENA_GLYPHS(glyphs));
 276
 277     if (style) sp_style_ref(style);
 278     if (glyphs->style) sp_style_unref(glyphs->style);
 279     glyphs->style = style;
 280
 281     nr_arena_item_request_update(NR_ARENA_ITEM(glyphs), NR_ARENA_ITEM_STATE_ALL, FALSE);
 282 }
 283
 284 static guint
 285 nr_arena_glyphs_fill_mask(NRArenaGlyphs *glyphs, NRRectL *area, NRPixBlock *m)
 286 {
 287     /* fixme: area == m->area, so merge these */
 288
 289     NRArenaItem *item = NR_ARENA_ITEM(glyphs);
 290
 291     if (glyphs->rfont && nr_rect_l_test_intersect(area, &item->bbox)) {
 292         raster_glyph *g = glyphs->rfont->GetGlyph(glyphs->glyph);
 293         if ( g ) g->Blit(NR::Point(glyphs->x, glyphs->y), *m);
 294     }
 295
 296     return item->state;
 297 }
 298
 299 static guint
 300 nr_arena_glyphs_stroke_mask(NRArenaGlyphs *glyphs, NRRectL *area, NRPixBlock *m)
 301 {
 302     NRArenaItem *item = NR_ARENA_ITEM(glyphs);
 303     if (glyphs->sfont && nr_rect_l_test_intersect(area, &item->bbox)) {
 304         raster_glyph *g=glyphs->sfont->GetGlyph(glyphs->glyph);
 305         if ( g ) g->Blit(NR::Point(glyphs->x, glyphs->y),*m);
 306     }
 307
 308     return item->state;
 309 }
 310
 311 static void nr_arena_glyphs_group_class_init(NRArenaGlyphsGroupClass *klass);
 312 static void nr_arena_glyphs_group_init(NRArenaGlyphsGroup *group);
 313 static void nr_arena_glyphs_group_finalize(NRObject *object);
 314
 315 static guint nr_arena_glyphs_group_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
 316 static unsigned int nr_arena_glyphs_group_render(NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);
 317 static unsigned int nr_arena_glyphs_group_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
 318 static NRArenaItem *nr_arena_glyphs_group_pick(NRArenaItem *item, NR::Point p, gdouble delta, unsigned int sticky);
 319
 320 static NRArenaGroupClass *group_parent_class;
 321
 322 NRType
 323 nr_arena_glyphs_group_get_type(void)
 324 {
 325     static NRType type = 0;
 326     if (!type) {
 327         type = nr_object_register_type(NR_TYPE_ARENA_GROUP,
 328                                        "NRArenaGlyphsGroup",
 329                                        sizeof(NRArenaGlyphsGroupClass),
 330                                        sizeof(NRArenaGlyphsGroup),
 331                                        (void (*)(NRObjectClass *)) nr_arena_glyphs_group_class_init,
 332                                        (void (*)(NRObject *)) nr_arena_glyphs_group_init);
 333     }
 334     return type;
 335 }
 336
 337 static void
 338 nr_arena_glyphs_group_class_init(NRArenaGlyphsGroupClass *klass)
 339 {
 340     NRObjectClass *object_class;
 341     NRArenaItemClass *item_class;
 342
 343     object_class = (NRObjectClass *) klass;
 344     item_class = (NRArenaItemClass *) klass;
 345
 346     group_parent_class = (NRArenaGroupClass *) ((NRObjectClass *) klass)->parent;
 347
 348     object_class->finalize = nr_arena_glyphs_group_finalize;
 349     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaGlyphsGroup>;
 350
 351     item_class->update = nr_arena_glyphs_group_update;
 352     item_class->render = nr_arena_glyphs_group_render;
 353     item_class->clip = nr_arena_glyphs_group_clip;
 354     item_class->pick = nr_arena_glyphs_group_pick;
 355 }
 356
 357 static void
 358 nr_arena_glyphs_group_init(NRArenaGlyphsGroup *group)
 359 {
 360     group->style = NULL;
 361     group->paintbox.x0 = group->paintbox.y0 = 0.0F;
 362     group->paintbox.x1 = group->paintbox.y1 = 1.0F;
 363
 364     group->fill_painter = NULL;
 365     group->stroke_painter = NULL;
 366 }
 367
 368 static void
 369 nr_arena_glyphs_group_finalize(NRObject *object)
 370 {
 371     NRArenaGlyphsGroup *group=static_cast<NRArenaGlyphsGroup *>(object);
 372
 373     if (group->fill_painter) {
 374         sp_painter_free(group->fill_painter);
 375         group->fill_painter = NULL;
 376     }
 377
 378     if (group->stroke_painter) {
 379         sp_painter_free(group->stroke_painter);
 380         group->stroke_painter = NULL;
 381     }
 382
 383     if (group->style) {
 384         sp_style_unref(group->style);
 385         group->style = NULL;
 386     }
 387
 388     ((NRObjectClass *) group_parent_class)->finalize(object);
 389 }
 390
 391 static guint
 392 nr_arena_glyphs_group_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset)
 393 {
 394     NRArenaGlyphsGroup *group = NR_ARENA_GLYPHS_GROUP(item);
 395
 396     if (group->fill_painter) {
 397         sp_painter_free(group->fill_painter);
 398         group->fill_painter = NULL;
 399     }
 400
 401     if (group->stroke_painter) {
 402         sp_painter_free(group->stroke_painter);
 403         group->stroke_painter = NULL;
 404     }
 405
 406     item->render_opacity = TRUE;
 407     if (group->style->fill.type == SP_PAINT_TYPE_PAINTSERVER) {
 408         group->fill_painter = sp_paint_server_painter_new(SP_STYLE_FILL_SERVER(group->style),
 409                                                           NR::Matrix(&gc->transform), NR::Matrix(&gc->parent->transform),
 410                                                           &group->paintbox);
 411         item->render_opacity = FALSE;
 412     }
 413
 414     if (group->style->stroke.type == SP_PAINT_TYPE_PAINTSERVER) {
 415         group->stroke_painter = sp_paint_server_painter_new(SP_STYLE_STROKE_SERVER(group->style),
 416                                                             NR::Matrix(&gc->transform), NR::Matrix(&gc->parent->transform),
 417                                                             &group->paintbox);
 418         item->render_opacity = FALSE;
 419     }
 420
 421     if ( item->render_opacity == TRUE && group->style->stroke.type != SP_PAINT_TYPE_NONE && group->style->fill.type != SP_PAINT_TYPE_NONE ) {
 422         item->render_opacity=FALSE;
 423     }
 424
 425     if (((NRArenaItemClass *) group_parent_class)->update)
 426         return ((NRArenaItemClass *) group_parent_class)->update(item, area, gc, state, reset);
 427
 428     return NR_ARENA_ITEM_STATE_ALL;
 429 }
 430
 431
 432 static unsigned int
 433 nr_arena_glyphs_group_render(NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags)
 434 {
 435     NRArenaItem *child;
 436
 437     NRArenaGroup *group = NR_ARENA_GROUP(item);
 438     NRArenaGlyphsGroup *ggroup = NR_ARENA_GLYPHS_GROUP(item);
 439     SPStyle const *style = ggroup->style;
 440
 441     guint ret = item->state;
 442
 443     if (item->arena->rendermode == RENDERMODE_OUTLINE) {
 444
 445         cairo_t *ct = nr_create_cairo_context (area, pb);
 446
 447         if (!ct)
 448             return item->state;
 449
 450         guint32 rgba = item->arena->outlinecolor;
 451         cairo_set_source_rgba(ct, SP_RGBA32_R_F(rgba), SP_RGBA32_G_F(rgba), SP_RGBA32_B_F(rgba), SP_RGBA32_A_F(rgba));
 452         cairo_set_tolerance(ct, 1.25); // low quality, but good enough for outline mode
 453
 454         for (child = group->children; child != NULL; child = child->next) {
 455             NRArenaGlyphs *g = NR_ARENA_GLYPHS(child);
 456
 457             NArtBpath *bpath = (NArtBpath *) g->font->ArtBPath(g->glyph);
 458
 459             cairo_new_path(ct);
 460             NR::Matrix g_t(g->g_transform);
 461             feed_curve_to_cairo (ct, bpath, g_t * group->ctm, NR::Point(area->x0, area->y0));
 462             cairo_fill(ct);
 463         }
 464
 465         cairo_surface_t *cst = cairo_get_target(ct);
 466         cairo_destroy (ct);
 467         cairo_surface_finish (cst);
 468         cairo_surface_destroy (cst);
 469
 470         pb->empty = FALSE;
 471         return ret;
 472     }
 473
 474
 475
 476
 477     /* Fill */
 478     if (style->fill.type != SP_PAINT_TYPE_NONE || item->arena->rendermode == RENDERMODE_OUTLINE) {
 479         NRPixBlock m;
 480         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 481
 482         // if memory allocation failed, abort
 483         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 484             nr_pixblock_release (&m);
 485             return (item->state);
 486         }
 487
 488         m.visible_area = pb->visible_area;
 489
 490         /* Render children fill mask */
 491         for (child = group->children; child != NULL; child = child->next) {
 492             ret = nr_arena_glyphs_fill_mask(NR_ARENA_GLYPHS(child), area, &m);
 493             if (!(ret & NR_ARENA_ITEM_STATE_RENDER)) {
 494                 nr_pixblock_release(&m);
 495                 return ret;
 496             }
 497         }
 498
 499         /* Composite into buffer */
 500         if (style->fill.type == SP_PAINT_TYPE_COLOR || item->arena->rendermode == RENDERMODE_OUTLINE) {
 501             guint32 rgba;
 502             if (item->arena->rendermode == RENDERMODE_OUTLINE) {
 503                 // In outline mode, render fill only, using outlinecolor
 504                 rgba = item->arena->outlinecolor;
 505             } else if ( item->render_opacity ) {
 506                 rgba = sp_color_get_rgba32_falpha(&style->fill.value.color,
 507                                                   SP_SCALE24_TO_FLOAT(style->fill_opacity.value) *
 508                                                   SP_SCALE24_TO_FLOAT(style->opacity.value));
 509             } else {
 510                 rgba = sp_color_get_rgba32_falpha(&style->fill.value.color, SP_SCALE24_TO_FLOAT(style->fill_opacity.value));
 511             }
 512             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 513             pb->empty = FALSE;
 514         } else if (style->fill.type == SP_PAINT_TYPE_PAINTSERVER) {
 515             if (ggroup->fill_painter) {
 516                 nr_arena_render_paintserver_fill(pb, area, ggroup->fill_painter, SP_SCALE24_TO_FLOAT(style->fill_opacity.value), &m);
 517             }
 518         }
 519
 520         nr_pixblock_release(&m);
 521     }
 522
 523     /* Stroke */
 524     if (style->stroke.type != SP_PAINT_TYPE_NONE && !(item->arena->rendermode == RENDERMODE_OUTLINE)) {
 525         NRPixBlock m;
 526         guint32 rgba;
 527         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 528
 529         // if memory allocation failed, abort
 530         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 531             nr_pixblock_release (&m);
 532             return (item->state);
 533         }
 534
 535         m.visible_area = pb->visible_area;
 536         /* Render children stroke mask */
 537         for (child = group->children; child != NULL; child = child->next) {
 538             ret = nr_arena_glyphs_stroke_mask(NR_ARENA_GLYPHS(child), area, &m);
 539             if (!(ret & NR_ARENA_ITEM_STATE_RENDER)) {
 540                 nr_pixblock_release(&m);
 541                 return ret;
 542             }
 543         }
 544         /* Composite into buffer */
 545         switch (style->stroke.type) {
 546             case SP_PAINT_TYPE_COLOR:
 547                 if ( item->render_opacity ) {
 548                     rgba = sp_color_get_rgba32_falpha(&style->stroke.value.color,
 549                                                       SP_SCALE24_TO_FLOAT(style->stroke_opacity.value) *
 550                                                       SP_SCALE24_TO_FLOAT(style->opacity.value));
 551                 } else {
 552                     rgba = sp_color_get_rgba32_falpha(&style->stroke.value.color,
 553                                                       SP_SCALE24_TO_FLOAT(style->stroke_opacity.value));
 554                 }
 555                 nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 556                 pb->empty = FALSE;
 557                 break;
 558             case SP_PAINT_TYPE_PAINTSERVER:
 559                 if (ggroup->stroke_painter) {
 560                     nr_arena_render_paintserver_fill(pb, area, ggroup->stroke_painter, SP_SCALE24_TO_FLOAT(style->stroke_opacity.value), &m);
 561                 }
 562                 break;
 563             default:
 564                 break;
 565         }
 566         nr_pixblock_release(&m);
 567     }
 568
 569     return ret;
 570 }
 571
 572 static unsigned int
 573 nr_arena_glyphs_group_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 574 {
 575     NRArenaGroup *group = NR_ARENA_GROUP(item);
 576
 577     guint ret = item->state;
 578
 579     /* Render children fill mask */
 580     for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
 581         ret = nr_arena_glyphs_fill_mask(NR_ARENA_GLYPHS(child), area, pb);
 582         if (!(ret & NR_ARENA_ITEM_STATE_RENDER)) return ret;
 583     }
 584
 585     return ret;
 586 }
 587
 588 static NRArenaItem *
 589 nr_arena_glyphs_group_pick(NRArenaItem *item, NR::Point p, gdouble delta, unsigned int sticky)
 590 {
 591     NRArenaItem *picked = NULL;
 592
 593     if (((NRArenaItemClass *) group_parent_class)->pick)
 594         picked = ((NRArenaItemClass *) group_parent_class)->pick(item, p, delta, sticky);
 595
 596     if (picked) picked = item;
 597
 598     return picked;
 599 }
 600
 601 void
 602 nr_arena_glyphs_group_clear(NRArenaGlyphsGroup *sg)
 603 {
 604     NRArenaGroup *group = NR_ARENA_GROUP(sg);
 605
 606     nr_arena_item_request_render(NR_ARENA_ITEM(group));
 607
 608     while (group->children) {
 609         nr_arena_item_remove_child(NR_ARENA_ITEM(group), group->children);
 610     }
 611 }
 612
 613 void
 614 nr_arena_glyphs_group_add_component(NRArenaGlyphsGroup *sg, font_instance *font, int glyph, NRMatrix const *transform)
 615 {
 616     NRArenaGroup *group;
 617     NRBPath bpath;
 618
 619     group = NR_ARENA_GROUP(sg);
 620
 621     bpath.path = ( font
 622                    ? (NArtBpath *) font->ArtBPath(glyph)
 623                    : NULL );
 624     if ( bpath.path ) {
 625
 626         nr_arena_item_request_render(NR_ARENA_ITEM(group));
 627
 628         NRArenaItem *new_arena = NRArenaGlyphs::create(group->arena);
 629         nr_arena_item_append_child(NR_ARENA_ITEM(group), new_arena);
 630         nr_arena_item_unref(new_arena);
 631         nr_arena_glyphs_set_path(NR_ARENA_GLYPHS(new_arena), NULL, FALSE, font, glyph, transform);
 632         nr_arena_glyphs_set_style(NR_ARENA_GLYPHS(new_arena), sg->style);
 633     }
 634 }
 635
 636 void
 637 nr_arena_glyphs_group_set_style(NRArenaGlyphsGroup *sg, SPStyle *style)
 638 {
 639     nr_return_if_fail(sg != NULL);
 640     nr_return_if_fail(NR_IS_ARENA_GLYPHS_GROUP(sg));
 641
 642     NRArenaGroup *group = NR_ARENA_GROUP(sg);
 643
 644     if (style) sp_style_ref(style);
 645     if (sg->style) sp_style_unref(sg->style);
 646     sg->style = style;
 647
 648     for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
 649         nr_return_if_fail(NR_IS_ARENA_GLYPHS(child));
 650         nr_arena_glyphs_set_style(NR_ARENA_GLYPHS(child), sg->style);
 651     }
 652
 653     nr_arena_item_request_update(NR_ARENA_ITEM(sg), NR_ARENA_ITEM_STATE_ALL, FALSE);
 654 }
 655
 656 void
 657 nr_arena_glyphs_group_set_paintbox(NRArenaGlyphsGroup *gg, NRRect const *pbox)
 658 {
 659     nr_return_if_fail(gg != NULL);
 660     nr_return_if_fail(NR_IS_ARENA_GLYPHS_GROUP(gg));
 661     nr_return_if_fail(pbox != NULL);
 662
 663     if ((pbox->x0 < pbox->x1) && (pbox->y0 < pbox->y1)) {
 664         gg->paintbox.x0 = pbox->x0;
 665         gg->paintbox.y0 = pbox->y0;
 666         gg->paintbox.x1 = pbox->x1;
 667         gg->paintbox.y1 = pbox->y1;
 668     } else {
 669         /* fixme: We kill warning, although not sure what to do here (Lauris) */
 670         gg->paintbox.x0 = gg->paintbox.y0 = 0.0F;
 671         gg->paintbox.x1 = gg->paintbox.y1 = 256.0F;
 672     }
 673
 674     nr_arena_item_request_update(NR_ARENA_ITEM(gg), NR_ARENA_ITEM_STATE_ALL, FALSE);
 675 }
 676
 677
 678 /*
 679   Local Variables:
 680   mode:c++
 681   c-file-style:"stroustrup"
 682   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 683   indent-tabs-mode:nil
 684   fill-column:99
 685   End:
 686 */
 687 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :