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 <libnr/nr-convert2geom.h>
  25 #include <2geom/matrix.h>
  26 #include "../style.h"
  27 #include "nr-arena.h"
  28 #include "nr-arena-glyphs.h"
  29 #include <cairo.h>
  30 #include "inkscape-cairo.h"
  31
  32 #ifdef test_glyph_liv
  33 #include "../display/canvas-bpath.h"
  34 #include <libnrtype/font-instance.h>
  35 #include <libnrtype/raster-glyph.h>
  36 #include <libnrtype/RasterFont.h>
  37
  38 // defined in nr-arena-shape.cpp
  39 void nr_pixblock_render_shape_mask_or(NRPixBlock &m, Shape *theS);
  40 #endif
  41
  42 #ifdef ENABLE_SVG_FONTS
  43 #include "nr-svgfonts.h"
  44 #endif //#ifdef ENABLE_SVG_FONTS
  45
  46 static void nr_arena_glyphs_class_init(NRArenaGlyphsClass *klass);
  47 static void nr_arena_glyphs_init(NRArenaGlyphs *glyphs);
  48 static void nr_arena_glyphs_finalize(NRObject *object);
  49
  50 static guint nr_arena_glyphs_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
  51 static guint nr_arena_glyphs_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
  52 static NRArenaItem *nr_arena_glyphs_pick(NRArenaItem *item, NR::Point p, double delta, unsigned int sticky);
  53
  54 static NRArenaItemClass *glyphs_parent_class;
  55
  56 NRType
  57 nr_arena_glyphs_get_type(void)
  58 {
  59     static NRType type = 0;
  60     if (!type) {
  61         type = nr_object_register_type(NR_TYPE_ARENA_ITEM,
  62                                        "NRArenaGlyphs",
  63                                        sizeof(NRArenaGlyphsClass),
  64                                        sizeof(NRArenaGlyphs),
  65                                        (void (*)(NRObjectClass *)) nr_arena_glyphs_class_init,
  66                                        (void (*)(NRObject *)) nr_arena_glyphs_init);
  67     }
  68     return type;
  69 }
  70
  71 static void
  72 nr_arena_glyphs_class_init(NRArenaGlyphsClass *klass)
  73 {
  74     NRObjectClass *object_class;
  75     NRArenaItemClass *item_class;
  76
  77     object_class = (NRObjectClass *) klass;
  78     item_class = (NRArenaItemClass *) klass;
  79
  80     glyphs_parent_class = (NRArenaItemClass *) ((NRObjectClass *) klass)->parent;
  81
  82     object_class->finalize = nr_arena_glyphs_finalize;
  83     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaGlyphs>;
  84
  85     item_class->update = nr_arena_glyphs_update;
  86     item_class->clip = nr_arena_glyphs_clip;
  87     item_class->pick = nr_arena_glyphs_pick;
  88 }
  89
  90 static void
  91 nr_arena_glyphs_init(NRArenaGlyphs *glyphs)
  92 {
  93     glyphs->style = NULL;
  94     glyphs->g_transform.set_identity();
  95     glyphs->font = NULL;
  96     glyphs->glyph = 0;
  97
  98     glyphs->rfont = NULL;
  99     glyphs->sfont = NULL;
 100     glyphs->x = glyphs->y = 0.0;
 101 }
 102
 103 static void
 104 nr_arena_glyphs_finalize(NRObject *object)
 105 {
 106     NRArenaGlyphs *glyphs = static_cast<NRArenaGlyphs *>(object);
 107
 108     if (glyphs->rfont) {
 109         glyphs->rfont->Unref();
 110         glyphs->rfont=NULL;
 111     }
 112     if (glyphs->sfont) {
 113         glyphs->sfont->Unref();
 114         glyphs->sfont=NULL;
 115     }
 116
 117     if (glyphs->font) {
 118         glyphs->font->Unref();
 119         glyphs->font=NULL;
 120     }
 121
 122     if (glyphs->style) {
 123         sp_style_unref(glyphs->style);
 124         glyphs->style = NULL;
 125     }
 126
 127     ((NRObjectClass *) glyphs_parent_class)->finalize(object);
 128 }
 129
 130 static guint
 131 nr_arena_glyphs_update(NRArenaItem *item, NRRectL */*area*/, NRGC *gc, guint /*state*/, guint /*reset*/)
 132 {
 133     NRArenaGlyphs *glyphs;
 134     raster_font *rfont;
 135
 136     glyphs = NR_ARENA_GLYPHS(item);
 137
 138     if (!glyphs->font || !glyphs->style)
 139         return NR_ARENA_ITEM_STATE_ALL;
 140     if ((glyphs->style->fill.isNone()) && (glyphs->style->stroke.isNone()))
 141         return NR_ARENA_ITEM_STATE_ALL;
 142
 143     NRRect bbox;
 144     bbox.x0 = bbox.y0 = NR_HUGE;
 145     bbox.x1 = bbox.y1 = -NR_HUGE;
 146
 147     float const scale = NR::expansion(gc->transform);
 148
 149     if (!glyphs->style->fill.isNone()) {
 150         NR::Matrix t;
 151         t = glyphs->g_transform * gc->transform;
 152         glyphs->x = t[4];
 153         glyphs->y = t[5];
 154         t[4]=0;
 155         t[5]=0;
 156         rfont = glyphs->font->RasterFont(t, 0);
 157         if (glyphs->rfont) glyphs->rfont->Unref();
 158         glyphs->rfont = rfont;
 159
 160         if (glyphs->style->stroke.isNone() || fabs(glyphs->style->stroke_width.computed * scale) <= 0.01) { // Optimization: do fill bbox only if there's no stroke
 161             NRRect narea;
 162             if ( glyphs->rfont ) glyphs->rfont->BBox(glyphs->glyph, &narea);
 163             bbox.x0 = narea.x0 + glyphs->x;
 164             bbox.y0 = narea.y0 + glyphs->y;
 165             bbox.x1 = narea.x1 + glyphs->x;
 166             bbox.y1 = narea.y1 + glyphs->y;
 167         }
 168     }
 169
 170     if (!glyphs->style->stroke.isNone()) {
 171         /* Build state data */
 172         NR::Matrix t;
 173         t = glyphs->g_transform * gc->transform;
 174         glyphs->x = t[4];
 175         glyphs->y = t[5];
 176         t[4]=0;
 177         t[5]=0;
 178
 179         if ( fabs(glyphs->style->stroke_width.computed * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
 180             font_style nstyl;
 181             nstyl.transform = t;
 182             nstyl.stroke_width=MAX(0.125, glyphs->style->stroke_width.computed * scale);
 183             if ( glyphs->style->stroke_linecap.computed == SP_STROKE_LINECAP_BUTT ) nstyl.stroke_cap=butt_straight;
 184             if ( glyphs->style->stroke_linecap.computed == SP_STROKE_LINECAP_ROUND ) nstyl.stroke_cap=butt_round;
 185             if ( glyphs->style->stroke_linecap.computed == SP_STROKE_LINECAP_SQUARE ) nstyl.stroke_cap=butt_square;
 186             if ( glyphs->style->stroke_linejoin.computed == SP_STROKE_LINEJOIN_MITER ) nstyl.stroke_join=join_pointy;
 187             if ( glyphs->style->stroke_linejoin.computed == SP_STROKE_LINEJOIN_ROUND ) nstyl.stroke_join=join_round;
 188             if ( glyphs->style->stroke_linejoin.computed == SP_STROKE_LINEJOIN_BEVEL ) nstyl.stroke_join=join_straight;
 189             nstyl.stroke_miter_limit = glyphs->style->stroke_miterlimit.value;
 190             nstyl.nbDash=0;
 191             nstyl.dash_offset = 0;
 192             nstyl.dashes=NULL;
 193             if ( glyphs->style->stroke_dash.n_dash > 0 ) {
 194                 nstyl.dash_offset = glyphs->style->stroke_dash.offset * scale;
 195                 nstyl.nbDash=glyphs->style->stroke_dash.n_dash;
 196                 nstyl.dashes=(double*)malloc(nstyl.nbDash*sizeof(double));
 197                 for (int i = 0; i < nstyl.nbDash; i++) nstyl.dashes[i]= glyphs->style->stroke_dash.dash[i] * scale;
 198             }
 199             rfont = glyphs->font->RasterFont( nstyl);
 200             if ( nstyl.dashes ) free(nstyl.dashes);
 201             if (glyphs->sfont) glyphs->sfont->Unref();
 202             glyphs->sfont = rfont;
 203
 204             NRRect narea;
 205             if ( glyphs->sfont ) glyphs->sfont->BBox(glyphs->glyph, &narea);
 206             narea.x0-=nstyl.stroke_width;
 207             narea.y0-=nstyl.stroke_width;
 208             narea.x1+=nstyl.stroke_width;
 209             narea.y1+=nstyl.stroke_width;
 210             bbox.x0 = narea.x0 + glyphs->x;
 211             bbox.y0 = narea.y0 + glyphs->y;
 212             bbox.x1 = narea.x1 + glyphs->x;
 213             bbox.y1 = narea.y1 + glyphs->y;
 214         }
 215     }
 216     if (nr_rect_d_test_empty(&bbox)) return NR_ARENA_ITEM_STATE_ALL;
 217
 218     item->bbox.x0 = (gint32)(bbox.x0 - 1.0);
 219     item->bbox.y0 = (gint32)(bbox.y0 - 1.0);
 220     item->bbox.x1 = (gint32)(bbox.x1 + 1.0);
 221     item->bbox.y1 = (gint32)(bbox.y1 + 1.0);
 222     nr_arena_request_render_rect(item->arena, &item->bbox);
 223
 224     return NR_ARENA_ITEM_STATE_ALL;
 225 }
 226
 227 static guint
 228 nr_arena_glyphs_clip(NRArenaItem *item, NRRectL */*area*/, NRPixBlock */*pb*/)
 229 {
 230     NRArenaGlyphs *glyphs;
 231
 232     glyphs = NR_ARENA_GLYPHS(item);
 233
 234     if (!glyphs->font ) return item->state;
 235
 236     /* TODO : render to greyscale pixblock provided for clipping */
 237
 238     return item->state;
 239 }
 240
 241 static NRArenaItem *
 242 nr_arena_glyphs_pick(NRArenaItem *item, NR::Point p, gdouble /*delta*/, unsigned int /*sticky*/)
 243 {
 244     NRArenaGlyphs *glyphs;
 245
 246     glyphs = NR_ARENA_GLYPHS(item);
 247
 248     if (!glyphs->font ) return NULL;
 249     if (!glyphs->style) return NULL;
 250
 251     double const x = p[NR::X];
 252     double const y = p[NR::Y];
 253     /* With text we take a simple approach: pick if the point is in a characher bbox */
 254     if ((x >= item->bbox.x0) && (y >= item->bbox.y0) && (x <= item->bbox.x1) && (y <= item->bbox.y1)) return item;
 255
 256     return NULL;
 257 }
 258
 259 void
 260 nr_arena_glyphs_set_path(NRArenaGlyphs *glyphs, SPCurve */*curve*/, unsigned int /*lieutenant*/, font_instance *font, gint glyph, NR::Matrix const *transform)
 261 {
 262     nr_return_if_fail(glyphs != NULL);
 263     nr_return_if_fail(NR_IS_ARENA_GLYPHS(glyphs));
 264
 265     nr_arena_item_request_render(NR_ARENA_ITEM(glyphs));
 266
 267     if (transform) {
 268         glyphs->g_transform = *transform;
 269     } else {
 270         glyphs->g_transform.set_identity();
 271     }
 272
 273     if (font) font->Ref();
 274     if (glyphs->font) glyphs->font->Unref();
 275     glyphs->font=font;
 276     glyphs->glyph = glyph;
 277
 278     nr_arena_item_request_update(NR_ARENA_ITEM(glyphs), NR_ARENA_ITEM_STATE_ALL, FALSE);
 279 }
 280
 281 void
 282 nr_arena_glyphs_set_style(NRArenaGlyphs *glyphs, SPStyle *style)
 283 {
 284     nr_return_if_fail(glyphs != NULL);
 285     nr_return_if_fail(NR_IS_ARENA_GLYPHS(glyphs));
 286
 287     if (style) sp_style_ref(style);
 288     if (glyphs->style) sp_style_unref(glyphs->style);
 289     glyphs->style = style;
 290
 291     nr_arena_item_request_update(NR_ARENA_ITEM(glyphs), NR_ARENA_ITEM_STATE_ALL, FALSE);
 292 }
 293
 294 static guint
 295 nr_arena_glyphs_fill_mask(NRArenaGlyphs *glyphs, NRRectL *area, NRPixBlock *m)
 296 {
 297     /* fixme: area == m->area, so merge these */
 298
 299     NRArenaItem *item = NR_ARENA_ITEM(glyphs);
 300
 301     if (glyphs->rfont && nr_rect_l_test_intersect(area, &item->bbox)) {
 302         raster_glyph *g = glyphs->rfont->GetGlyph(glyphs->glyph);
 303         if ( g ) g->Blit(NR::Point(glyphs->x, glyphs->y), *m);
 304     }
 305
 306     return item->state;
 307 }
 308
 309 static guint
 310 nr_arena_glyphs_stroke_mask(NRArenaGlyphs *glyphs, NRRectL *area, NRPixBlock *m)
 311 {
 312     NRArenaItem *item = NR_ARENA_ITEM(glyphs);
 313     if (glyphs->sfont && nr_rect_l_test_intersect(area, &item->bbox)) {
 314         raster_glyph *g=glyphs->sfont->GetGlyph(glyphs->glyph);
 315         if ( g ) g->Blit(NR::Point(glyphs->x, glyphs->y),*m);
 316     }
 317
 318     return item->state;
 319 }
 320
 321 static void nr_arena_glyphs_group_class_init(NRArenaGlyphsGroupClass *klass);
 322 static void nr_arena_glyphs_group_init(NRArenaGlyphsGroup *group);
 323 static void nr_arena_glyphs_group_finalize(NRObject *object);
 324
 325 static guint nr_arena_glyphs_group_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
 326 static unsigned int nr_arena_glyphs_group_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);
 327 static unsigned int nr_arena_glyphs_group_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
 328 static NRArenaItem *nr_arena_glyphs_group_pick(NRArenaItem *item, NR::Point p, gdouble delta, unsigned int sticky);
 329
 330 static NRArenaGroupClass *group_parent_class;
 331
 332 NRType
 333 nr_arena_glyphs_group_get_type(void)
 334 {
 335     static NRType type = 0;
 336     if (!type) {
 337         type = nr_object_register_type(NR_TYPE_ARENA_GROUP,
 338                                        "NRArenaGlyphsGroup",
 339                                        sizeof(NRArenaGlyphsGroupClass),
 340                                        sizeof(NRArenaGlyphsGroup),
 341                                        (void (*)(NRObjectClass *)) nr_arena_glyphs_group_class_init,
 342                                        (void (*)(NRObject *)) nr_arena_glyphs_group_init);
 343     }
 344     return type;
 345 }
 346
 347 static void
 348 nr_arena_glyphs_group_class_init(NRArenaGlyphsGroupClass *klass)
 349 {
 350     NRObjectClass *object_class;
 351     NRArenaItemClass *item_class;
 352
 353     object_class = (NRObjectClass *) klass;
 354     item_class = (NRArenaItemClass *) klass;
 355
 356     group_parent_class = (NRArenaGroupClass *) ((NRObjectClass *) klass)->parent;
 357
 358     object_class->finalize = nr_arena_glyphs_group_finalize;
 359     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaGlyphsGroup>;
 360
 361     item_class->update = nr_arena_glyphs_group_update;
 362     item_class->render = nr_arena_glyphs_group_render;
 363     item_class->clip = nr_arena_glyphs_group_clip;
 364     item_class->pick = nr_arena_glyphs_group_pick;
 365 }
 366
 367 static void
 368 nr_arena_glyphs_group_init(NRArenaGlyphsGroup *group)
 369 {
 370     group->style = NULL;
 371     group->paintbox.x0 = group->paintbox.y0 = 0.0F;
 372     group->paintbox.x1 = group->paintbox.y1 = 1.0F;
 373
 374     group->fill_painter = NULL;
 375     group->stroke_painter = NULL;
 376 }
 377
 378 static void
 379 nr_arena_glyphs_group_finalize(NRObject *object)
 380 {
 381     NRArenaGlyphsGroup *group=static_cast<NRArenaGlyphsGroup *>(object);
 382
 383     if (group->fill_painter) {
 384         sp_painter_free(group->fill_painter);
 385         group->fill_painter = NULL;
 386     }
 387
 388     if (group->stroke_painter) {
 389         sp_painter_free(group->stroke_painter);
 390         group->stroke_painter = NULL;
 391     }
 392
 393     if (group->style) {
 394         sp_style_unref(group->style);
 395         group->style = NULL;
 396     }
 397
 398     ((NRObjectClass *) group_parent_class)->finalize(object);
 399 }
 400
 401 static guint
 402 nr_arena_glyphs_group_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset)
 403 {
 404     NRArenaGlyphsGroup *group = NR_ARENA_GLYPHS_GROUP(item);
 405
 406     if (group->fill_painter) {
 407         sp_painter_free(group->fill_painter);
 408         group->fill_painter = NULL;
 409     }
 410
 411     if (group->stroke_painter) {
 412         sp_painter_free(group->stroke_painter);
 413         group->stroke_painter = NULL;
 414     }
 415
 416     item->render_opacity = TRUE;
 417     if (group->style->fill.isPaintserver()) {
 418         group->fill_painter = sp_paint_server_painter_new(SP_STYLE_FILL_SERVER(group->style),
 419                                                           gc->transform, gc->parent->transform,
 420                                                           &group->paintbox);
 421         item->render_opacity = FALSE;
 422     }
 423
 424     if (group->style->stroke.isPaintserver()) {
 425         group->stroke_painter = sp_paint_server_painter_new(SP_STYLE_STROKE_SERVER(group->style),
 426                                                             gc->transform, gc->parent->transform,
 427                                                             &group->paintbox);
 428         item->render_opacity = FALSE;
 429     }
 430
 431     if ( item->render_opacity == TRUE && !group->style->stroke.isNone() && !group->style->fill.isNone() ) {
 432         item->render_opacity=FALSE;
 433     }
 434
 435     if (((NRArenaItemClass *) group_parent_class)->update)
 436         return ((NRArenaItemClass *) group_parent_class)->update(item, area, gc, state, reset);
 437
 438     return NR_ARENA_ITEM_STATE_ALL;
 439 }
 440
 441
 442 static unsigned int
 443 nr_arena_glyphs_group_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int /*flags*/)
 444 {
 445     NRArenaItem *child;
 446
 447     NRArenaGroup *group = NR_ARENA_GROUP(item);
 448     NRArenaGlyphsGroup *ggroup = NR_ARENA_GLYPHS_GROUP(item);
 449     SPStyle const *style = ggroup->style;
 450
 451     guint ret = item->state;
 452
 453     if (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE) {
 454
 455         if (!ct)
 456             return item->state;
 457
 458         guint32 rgba = item->arena->outlinecolor;
 459         // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 460         // by setting color channels in the "wrong" order
 461         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));
 462         cairo_set_tolerance(ct, 1.25); // low quality, but good enough for outline mode
 463
 464         for (child = group->children; child != NULL; child = child->next) {
 465             NRArenaGlyphs *g = NR_ARENA_GLYPHS(child);
 466
 467             Geom::PathVector const * pathv = g->font->PathVector(g->glyph);
 468
 469             cairo_new_path(ct);
 470             Geom::Matrix transform = to_2geom(g->g_transform * group->ctm);
 471             feed_pathvector_to_cairo (ct, *pathv, transform, (pb->area).upgrade(), false, 0);
 472             cairo_fill(ct);
 473             pb->empty = FALSE;
 474         }
 475
 476         return ret;
 477     }
 478
 479
 480
 481     /* Fill */
 482     if (!style->fill.isNone() || item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE) {
 483         NRPixBlock m;
 484         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 485
 486         // if memory allocation failed, abort
 487         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 488             nr_pixblock_release (&m);
 489             return (item->state);
 490         }
 491
 492         m.visible_area = pb->visible_area;
 493
 494         /* Render children fill mask */
 495         for (child = group->children; child != NULL; child = child->next) {
 496             ret = nr_arena_glyphs_fill_mask(NR_ARENA_GLYPHS(child), area, &m);
 497             if (!(ret & NR_ARENA_ITEM_STATE_RENDER)) {
 498                 nr_pixblock_release(&m);
 499                 return ret;
 500             }
 501         }
 502
 503         /* Composite into buffer */
 504         if (style->fill.isPaintserver()) {
 505             if (ggroup->fill_painter) {
 506                 nr_arena_render_paintserver_fill(pb, area, ggroup->fill_painter, SP_SCALE24_TO_FLOAT(style->fill_opacity.value), &m);
 507             }
 508         } else if (style->fill.isColor() || item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE) {
 509             guint32 rgba;
 510             if (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE) {
 511                 // In outline mode, render fill only, using outlinecolor
 512                 rgba = item->arena->outlinecolor;
 513             } else if ( item->render_opacity ) {
 514                 rgba = style->fill.value.color.toRGBA32( SP_SCALE24_TO_FLOAT(style->fill_opacity.value) *
 515                                                          SP_SCALE24_TO_FLOAT(style->opacity.value) );
 516             } else {
 517                 rgba = style->fill.value.color.toRGBA32( SP_SCALE24_TO_FLOAT(style->fill_opacity.value) );
 518             }
 519             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 520             pb->empty = FALSE;
 521         }
 522
 523         nr_pixblock_release(&m);
 524     }
 525
 526     /* Stroke */
 527     if (!style->stroke.isNone() && !(item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE)) {
 528         NRPixBlock m;
 529         guint32 rgba;
 530         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 531
 532         // if memory allocation failed, abort
 533         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 534             nr_pixblock_release (&m);
 535             return (item->state);
 536         }
 537
 538         m.visible_area = pb->visible_area;
 539         /* Render children stroke mask */
 540         for (child = group->children; child != NULL; child = child->next) {
 541             ret = nr_arena_glyphs_stroke_mask(NR_ARENA_GLYPHS(child), area, &m);
 542             if (!(ret & NR_ARENA_ITEM_STATE_RENDER)) {
 543                 nr_pixblock_release(&m);
 544                 return ret;
 545             }
 546         }
 547         /* Composite into buffer */
 548         if (style->stroke.isPaintserver()) {
 549             if (ggroup->stroke_painter) {
 550                 nr_arena_render_paintserver_fill(pb, area, ggroup->stroke_painter, SP_SCALE24_TO_FLOAT(style->stroke_opacity.value), &m);
 551             }
 552         } else if (style->stroke.isColor()) {
 553             if ( item->render_opacity ) {
 554                 rgba = style->stroke.value.color.toRGBA32( SP_SCALE24_TO_FLOAT(style->stroke_opacity.value) *
 555                                                            SP_SCALE24_TO_FLOAT(style->opacity.value) );
 556             } else {
 557                 rgba = style->stroke.value.color.toRGBA32( SP_SCALE24_TO_FLOAT(style->stroke_opacity.value) );
 558             }
 559             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 560             pb->empty = FALSE;
 561         } else {
 562             // nothing
 563         }
 564         nr_pixblock_release(&m);
 565     }
 566
 567     return ret;
 568 }
 569
 570 static unsigned int
 571 nr_arena_glyphs_group_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 572 {
 573     NRArenaGroup *group = NR_ARENA_GROUP(item);
 574
 575     guint ret = item->state;
 576
 577     /* Render children fill mask */
 578     for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
 579         ret = nr_arena_glyphs_fill_mask(NR_ARENA_GLYPHS(child), area, pb);
 580         if (!(ret & NR_ARENA_ITEM_STATE_RENDER)) return ret;
 581     }
 582
 583     return ret;
 584 }
 585
 586 static NRArenaItem *
 587 nr_arena_glyphs_group_pick(NRArenaItem *item, NR::Point p, gdouble delta, unsigned int sticky)
 588 {
 589     NRArenaItem *picked = NULL;
 590
 591     if (((NRArenaItemClass *) group_parent_class)->pick)
 592         picked = ((NRArenaItemClass *) group_parent_class)->pick(item, p, delta, sticky);
 593
 594     if (picked) picked = item;
 595
 596     return picked;
 597 }
 598
 599 void
 600 nr_arena_glyphs_group_clear(NRArenaGlyphsGroup *sg)
 601 {
 602     NRArenaGroup *group = NR_ARENA_GROUP(sg);
 603
 604     nr_arena_item_request_render(NR_ARENA_ITEM(group));
 605
 606     while (group->children) {
 607         nr_arena_item_remove_child(NR_ARENA_ITEM(group), group->children);
 608     }
 609 }
 610
 611 void
 612 nr_arena_glyphs_group_add_component(NRArenaGlyphsGroup *sg, font_instance *font, int glyph, NR::Matrix const *transform)
 613 {
 614     NRArenaGroup *group;
 615
 616     group = NR_ARENA_GROUP(sg);
 617
 618     Geom::PathVector const * pathv = ( font
 619                                        ? font->PathVector(glyph)
 620                                        : NULL );
 621     if ( pathv ) {
 622         nr_arena_item_request_render(NR_ARENA_ITEM(group));
 623
 624         NRArenaItem *new_arena = NRArenaGlyphs::create(group->arena);
 625         nr_arena_item_append_child(NR_ARENA_ITEM(group), new_arena);
 626         nr_arena_item_unref(new_arena);
 627         nr_arena_glyphs_set_path(NR_ARENA_GLYPHS(new_arena), NULL, FALSE, font, glyph, transform);
 628         nr_arena_glyphs_set_style(NR_ARENA_GLYPHS(new_arena), sg->style);
 629     }
 630 }
 631
 632 void
 633 nr_arena_glyphs_group_set_style(NRArenaGlyphsGroup *sg, SPStyle *style)
 634 {
 635     nr_return_if_fail(sg != NULL);
 636     nr_return_if_fail(NR_IS_ARENA_GLYPHS_GROUP(sg));
 637
 638     NRArenaGroup *group = NR_ARENA_GROUP(sg);
 639
 640     if (style) sp_style_ref(style);
 641     if (sg->style) sp_style_unref(sg->style);
 642     sg->style = style;
 643
 644     for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
 645         nr_return_if_fail(NR_IS_ARENA_GLYPHS(child));
 646         nr_arena_glyphs_set_style(NR_ARENA_GLYPHS(child), sg->style);
 647     }
 648
 649     nr_arena_item_request_update(NR_ARENA_ITEM(sg), NR_ARENA_ITEM_STATE_ALL, FALSE);
 650 }
 651
 652 void
 653 nr_arena_glyphs_group_set_paintbox(NRArenaGlyphsGroup *gg, NRRect const *pbox)
 654 {
 655     nr_return_if_fail(gg != NULL);
 656     nr_return_if_fail(NR_IS_ARENA_GLYPHS_GROUP(gg));
 657     nr_return_if_fail(pbox != NULL);
 658
 659     if ((pbox->x0 < pbox->x1) && (pbox->y0 < pbox->y1)) {
 660         gg->paintbox.x0 = pbox->x0;
 661         gg->paintbox.y0 = pbox->y0;
 662         gg->paintbox.x1 = pbox->x1;
 663         gg->paintbox.y1 = pbox->y1;
 664     } else {
 665         /* fixme: We kill warning, although not sure what to do here (Lauris) */
 666         gg->paintbox.x0 = gg->paintbox.y0 = 0.0F;
 667         gg->paintbox.x1 = gg->paintbox.y1 = 256.0F;
 668     }
 669
 670     nr_arena_item_request_update(NR_ARENA_ITEM(gg), NR_ARENA_ITEM_STATE_ALL, FALSE);
 671 }
 672
 673
 674 /*
 675   Local Variables:
 676   mode:c++
 677   c-file-style:"stroustrup"
 678   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 679   indent-tabs-mode:nil
 680   fill-column:99
 681   End:
 682 */
 683 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :