static unsigned int nr_arena_group_render (cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags) { NRArenaGroup *group = NR_ARENA_GROUP (item); unsigned int ret = item->state; /* Just compose children into parent buffer */ for (NRArenaItem *child = group->children; child != NULL; child = child->next) { ret = nr_arena_item_invoke_render (ct, child, area, pb, flags); if (ret & NR_ARENA_ITEM_STATE_INVALID) break; } return ret; }
void sp_canvas_arena_render_pixblock (SPCanvasArena *ca, NRPixBlock *pb) { NRRectL area; g_return_if_fail (ca != NULL); g_return_if_fail (SP_IS_CANVAS_ARENA (ca)); /* fixme: */ pb->empty = FALSE; area.x0 = pb->area.x0; area.y0 = pb->area.y0; area.x1 = pb->area.x1; area.y1 = pb->area.y1; nr_arena_item_invoke_render (ca->root, &area, pb, 0); }
static void sp_canvas_arena_render (SPCanvasItem *item, SPCanvasBuf *buf) { SPCanvasArena *arena; gint bw, bh, sw, sh; gint x, y; arena = SP_CANVAS_ARENA (item); nr_arena_item_invoke_update (arena->root, NULL, &arena->gc, NR_ARENA_ITEM_STATE_BBOX | NR_ARENA_ITEM_STATE_RENDER, NR_ARENA_ITEM_STATE_NONE); if (buf->is_bg) { sp_canvas_clear_buffer (buf); buf->is_bg = FALSE; buf->is_buf = TRUE; } bw = buf->rect.x1 - buf->rect.x0; bh = buf->rect.y1 - buf->rect.y0; if ((bw < 1) || (bh < 1)) return; /* 65536 is max cached buffer and we need 4 channels */ if (bw * bh < 16384) { /* We can go with single buffer */ sw = bw; sh = bh; } else if (bw <= 2048) { /* Go with row buffer */ sw = bw; sh = 16384 / bw; } else if (bh <= 2048) { /* Go with column buffer */ sw = 16384 / bh; sh = bh; } else { sw = 128; sh = 128; } /* fixme: RGB transformed bitmap blit is not implemented (Lauris) */ /* And even if it would be, unless it uses MMX there is little reason to go RGB */ #define STRICT_RGBA for (y = buf->rect.y0; y < buf->rect.y1; y += sh) { for (x = buf->rect.x0; x < buf->rect.x1; x += sw) { NRRectL area; #ifdef STRICT_RGBA NRPixBlock pb; #endif NRPixBlock cb; area.x0 = x; area.y0 = y; area.x1 = MIN (x + sw, buf->rect.x1); area.y1 = MIN (y + sh, buf->rect.y1); #ifdef STRICT_RGBA nr_pixblock_setup_fast (&pb, NR_PIXBLOCK_MODE_R8G8B8A8P, area.x0, area.y0, area.x1, area.y1, TRUE); /* fixme: */ pb.empty = FALSE; #endif nr_pixblock_setup_extern (&cb, NR_PIXBLOCK_MODE_R8G8B8, area.x0, area.y0, area.x1, area.y1, buf->buf + (y - buf->rect.y0) * buf->buf_rowstride + 3 * (x - buf->rect.x0), buf->buf_rowstride, FALSE, FALSE); #ifdef STRICT_RGBA nr_arena_item_invoke_render (arena->root, &area, &pb, 0); nr_blit_pixblock_pixblock (&cb, &pb); nr_pixblock_release (&pb); #else nr_arena_item_invoke_render (arena->root, &area, &cb, 0); #endif nr_pixblock_release (&cb); } } }
GdkPixbuf* render_pixbuf(NRArenaItem* root, double scale_factor, const Geom::Rect& dbox, unsigned psize) { NRGC gc(NULL); Geom::Matrix t(Geom::Scale(scale_factor, scale_factor)); nr_arena_item_set_transform(root, t); gc.transform.setIdentity(); nr_arena_item_invoke_update( root, NULL, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE ); /* Item integer bbox in points */ NRRectL ibox; ibox.x0 = (int) floor(scale_factor * dbox.min()[Geom::X] + 0.5); ibox.y0 = (int) floor(scale_factor * dbox.min()[Geom::Y] + 0.5); ibox.x1 = (int) floor(scale_factor * dbox.max()[Geom::X] + 0.5); ibox.y1 = (int) floor(scale_factor * dbox.max()[Geom::Y] + 0.5); /* Find visible area */ int width = ibox.x1 - ibox.x0; int height = ibox.y1 - ibox.y0; int dx = psize; int dy = psize; dx = (dx - width)/2; // watch out for size, since 'unsigned'-'signed' can cause problems if the result is negative dy = (dy - height)/2; NRRectL area; area.x0 = ibox.x0 - dx; area.y0 = ibox.y0 - dy; area.x1 = area.x0 + psize; area.y1 = area.y0 + psize; /* Actual renderable area */ NRRectL ua; ua.x0 = std::max(ibox.x0, area.x0); ua.y0 = std::max(ibox.y0, area.y0); ua.x1 = std::min(ibox.x1, area.x1); ua.y1 = std::min(ibox.y1, area.y1); /* Set up pixblock */ guchar *px = g_new(guchar, 4 * psize * psize); memset(px, 0x00, 4 * psize * psize); /* Render */ NRPixBlock B; nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N, ua.x0, ua.y0, ua.x1, ua.y1, px + 4 * psize * (ua.y0 - area.y0) + 4 * (ua.x0 - area.x0), 4 * psize, FALSE, FALSE ); nr_arena_item_invoke_render(NULL, root, &ua, &B, NR_ARENA_ITEM_RENDER_NO_CACHE ); nr_pixblock_release(&B); GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(px, GDK_COLORSPACE_RGB, TRUE, 8, psize, psize, psize * 4, (GdkPixbufDestroyNotify)g_free, NULL); return pixbuf; }