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