#define __SP_MASK_C__ /* * SVG <mask> implementation * * Authors: * Lauris Kaplinski <lauris@kaplinski.com> * * Copyright (C) 2003 authors * * Released under GNU GPL, read the file 'COPYING' for more information */ #include "display/nr-arena.h" #include "display/nr-arena-group.h" #include <xml/repr.h> #include "enums.h" #include "attributes.h" #include "document.h" #include "document-private.h" #include "sp-item.h" #include "sp-mask.h" struct SPMaskView { SPMaskView *next; unsigned int key; NRArenaItem *arenaitem; NRRect bbox; }; static void sp_mask_class_init (SPMaskClass *klass); static void sp_mask_init (SPMask *mask); static void sp_mask_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr); static void sp_mask_release (SPObject * object); static void sp_mask_set (SPObject *object, unsigned int key, const gchar *value); static void sp_mask_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref); static void sp_mask_update (SPObject *object, SPCtx *ctx, guint flags); static void sp_mask_modified (SPObject *object, guint flags); static Inkscape::XML::Node *sp_mask_write (SPObject *object, Inkscape::XML::Node *repr, guint flags); SPMaskView *sp_mask_view_new_prepend (SPMaskView *list, unsigned int key, NRArenaItem *arenaitem); SPMaskView *sp_mask_view_list_remove (SPMaskView *list, SPMaskView *view); static SPObjectGroupClass *parent_class; GType sp_mask_get_type (void) { static GType type = 0; if (!type) { GTypeInfo info = { sizeof (SPMaskClass), NULL, NULL, (GClassInitFunc) sp_mask_class_init, NULL, NULL, sizeof (SPMask), 16, (GInstanceInitFunc) sp_mask_init, NULL, /* value_table */ }; type = g_type_register_static (SP_TYPE_OBJECTGROUP, "SPMask", &info, (GTypeFlags)0); } return type; } static void sp_mask_class_init (SPMaskClass *klass) { parent_class = (SPObjectGroupClass*) g_type_class_ref (SP_TYPE_OBJECTGROUP); SPObjectClass *sp_object_class = (SPObjectClass *) klass; sp_object_class->build = sp_mask_build; sp_object_class->release = sp_mask_release; sp_object_class->set = sp_mask_set; sp_object_class->child_added = sp_mask_child_added; sp_object_class->update = sp_mask_update; sp_object_class->modified = sp_mask_modified; sp_object_class->write = sp_mask_write; } static void sp_mask_init (SPMask *mask) { mask->maskUnits_set = FALSE; mask->maskUnits = SP_CONTENT_UNITS_OBJECTBOUNDINGBOX; mask->maskContentUnits_set = FALSE; mask->maskContentUnits = SP_CONTENT_UNITS_USERSPACEONUSE; mask->display = NULL; } static void sp_mask_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr) { if (((SPObjectClass *) parent_class)->build) { ((SPObjectClass *) parent_class)->build (object, document, repr); } sp_object_read_attr (object, "maskUnits"); sp_object_read_attr (object, "maskContentUnits"); /* Register ourselves */ sp_document_add_resource (document, "mask", object); } static void sp_mask_release (SPObject * object) { if (SP_OBJECT_DOCUMENT (object)) { /* Unregister ourselves */ sp_document_remove_resource (SP_OBJECT_DOCUMENT (object), "mask", object); } SPMask *cp = SP_MASK (object); while (cp->display) { /* We simply unref and let item manage this in handler */ cp->display = sp_mask_view_list_remove (cp->display, cp->display); } if (((SPObjectClass *) (parent_class))->release) { ((SPObjectClass *) parent_class)->release (object); } } static void sp_mask_set (SPObject *object, unsigned int key, const gchar *value) { SPMask *mask = SP_MASK (object); switch (key) { case SP_ATTR_MASKUNITS: mask->maskUnits = SP_CONTENT_UNITS_OBJECTBOUNDINGBOX; mask->maskUnits_set = FALSE; if (value) { if (!strcmp (value, "userSpaceOnUse")) { mask->maskUnits = SP_CONTENT_UNITS_USERSPACEONUSE; mask->maskUnits_set = TRUE; } else if (!strcmp (value, "objectBoundingBox")) { mask->maskUnits_set = TRUE; } } object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); break; case SP_ATTR_MASKCONTENTUNITS: mask->maskContentUnits = SP_CONTENT_UNITS_USERSPACEONUSE; mask->maskContentUnits_set = FALSE; if (value) { if (!strcmp (value, "userSpaceOnUse")) { mask->maskContentUnits_set = TRUE; } else if (!strcmp (value, "objectBoundingBox")) { mask->maskContentUnits = SP_CONTENT_UNITS_OBJECTBOUNDINGBOX; mask->maskContentUnits_set = TRUE; } } object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); break; default: if (((SPObjectClass *) parent_class)->set) ((SPObjectClass *) parent_class)->set (object, key, value); break; } } static void sp_mask_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref) { /* Invoke SPObjectGroup implementation */ ((SPObjectClass *) (parent_class))->child_added (object, child, ref); /* Show new object */ SPObject *ochild = SP_OBJECT_DOCUMENT (object)->getObjectByRepr(child); if (SP_IS_ITEM (ochild)) { SPMask *cp = SP_MASK (object); for (SPMaskView *v = cp->display; v != NULL; v = v->next) { NRArenaItem *ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, SP_ITEM_REFERENCE_FLAGS); if (ac) { nr_arena_item_add_child (v->arenaitem, ac, NULL); nr_arena_item_unref (ac); } } } } static void sp_mask_update (SPObject *object, SPCtx *ctx, guint flags) { if (flags & SP_OBJECT_MODIFIED_FLAG) { flags |= SP_OBJECT_PARENT_MODIFIED_FLAG; } flags &= SP_OBJECT_MODIFIED_CASCADE; SPObjectGroup *og = SP_OBJECTGROUP (object); GSList *l = NULL; for (SPObject *child = sp_object_first_child(SP_OBJECT(og)); child != NULL; child = SP_OBJECT_NEXT(child)) { g_object_ref (G_OBJECT (child)); l = g_slist_prepend (l, child); } l = g_slist_reverse (l); while (l) { SPObject *child = SP_OBJECT (l->data); l = g_slist_remove (l, child); if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) { child->updateDisplay(ctx, flags); } g_object_unref (G_OBJECT (child)); } SPMask *mask = SP_MASK (object); for (SPMaskView *v = mask->display; v != NULL; v = v->next) { if (mask->maskContentUnits == SP_CONTENT_UNITS_OBJECTBOUNDINGBOX) { NRMatrix t; nr_matrix_set_scale (&t, v->bbox.x1 - v->bbox.x0, v->bbox.y1 - v->bbox.y0); t.c[4] = v->bbox.x0; t.c[5] = v->bbox.y0; nr_arena_group_set_child_transform (NR_ARENA_GROUP (v->arenaitem), &t); } else { nr_arena_group_set_child_transform (NR_ARENA_GROUP (v->arenaitem), NULL); } } } static void sp_mask_modified (SPObject *object, guint flags) { if (flags & SP_OBJECT_MODIFIED_FLAG) { flags |= SP_OBJECT_PARENT_MODIFIED_FLAG; } flags &= SP_OBJECT_MODIFIED_CASCADE; SPObjectGroup *og = SP_OBJECTGROUP (object); GSList *l = NULL; for (SPObject *child = sp_object_first_child(SP_OBJECT(og)); child != NULL; child = SP_OBJECT_NEXT(child)) { g_object_ref (G_OBJECT (child)); l = g_slist_prepend (l, child); } l = g_slist_reverse (l); while (l) { SPObject *child = SP_OBJECT (l->data); l = g_slist_remove (l, child); if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) { child->emitModified(flags); } g_object_unref (G_OBJECT (child)); } } static Inkscape::XML::Node * sp_mask_write (SPObject *object, Inkscape::XML::Node *repr, guint flags) { if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) { repr = sp_repr_new ("svg:mask"); } if (((SPObjectClass *) (parent_class))->write) ((SPObjectClass *) (parent_class))->write (object, repr, flags); return repr; } // Create a mask element (using passed elements), add it to <defs> const gchar * sp_mask_create (GSList *reprs, SPDocument *document, NR::Matrix const* applyTransform) { Inkscape::XML::Node *defsrepr = SP_OBJECT_REPR (SP_DOCUMENT_DEFS (document)); Inkscape::XML::Node *repr = sp_repr_new ("svg:mask"); repr->setAttribute("maskUnits", "userSpaceOnUse"); defsrepr->appendChild(repr); const gchar *mask_id = repr->attribute("id"); SPObject *mask_object = document->getObjectById(mask_id); for (GSList *it = reprs; it != NULL; it = it->next) { Inkscape::XML::Node *node = (Inkscape::XML::Node *)(it->data); SPItem *item = SP_ITEM(mask_object->appendChildRepr(node)); if (NULL != applyTransform) { NR::Matrix transform (item->transform); transform *= (*applyTransform); sp_item_write_transform(item, SP_OBJECT_REPR(item), transform); } } defsrepr->changeOrder(repr, defsrepr->lastChild()); // workaround for bug 989084 Inkscape::GC::release(repr); return mask_id; } NRArenaItem * sp_mask_show (SPMask *mask, NRArena *arena, unsigned int key) { g_return_val_if_fail (mask != NULL, NULL); g_return_val_if_fail (SP_IS_MASK (mask), NULL); g_return_val_if_fail (arena != NULL, NULL); g_return_val_if_fail (NR_IS_ARENA (arena), NULL); NRArenaItem *ai = NRArenaGroup::create(arena); mask->display = sp_mask_view_new_prepend (mask->display, key, ai); for (SPObject *child = sp_object_first_child(SP_OBJECT(mask)) ; child != NULL; child = SP_OBJECT_NEXT(child)) { if (SP_IS_ITEM (child)) { NRArenaItem *ac = sp_item_invoke_show (SP_ITEM (child), arena, key, SP_ITEM_REFERENCE_FLAGS); if (ac) { /* The order is not important in mask */ nr_arena_item_add_child (ai, ac, NULL); nr_arena_item_unref (ac); } } } if (mask->maskContentUnits == SP_CONTENT_UNITS_OBJECTBOUNDINGBOX) { NRMatrix t; nr_matrix_set_scale (&t, mask->display->bbox.x1 - mask->display->bbox.x0, mask->display->bbox.y1 - mask->display->bbox.y0); t.c[4] = mask->display->bbox.x0; t.c[5] = mask->display->bbox.y0; nr_arena_group_set_child_transform (NR_ARENA_GROUP (ai), &t); } return ai; } void sp_mask_hide (SPMask *cp, unsigned int key) { g_return_if_fail (cp != NULL); g_return_if_fail (SP_IS_MASK (cp)); for (SPObject *child = sp_object_first_child(SP_OBJECT(cp)); child != NULL; child = SP_OBJECT_NEXT(child)) { if (SP_IS_ITEM (child)) { sp_item_invoke_hide (SP_ITEM (child), key); } } for (SPMaskView *v = cp->display; v != NULL; v = v->next) { if (v->key == key) { /* We simply unref and let item to manage this in handler */ cp->display = sp_mask_view_list_remove (cp->display, v); return; } } g_assert_not_reached (); } void sp_mask_set_bbox (SPMask *mask, unsigned int key, NRRect *bbox) { for (SPMaskView *v = mask->display; v != NULL; v = v->next) { if (v->key == key) { if (!NR_DF_TEST_CLOSE (v->bbox.x0, bbox->x0, NR_EPSILON) || !NR_DF_TEST_CLOSE (v->bbox.y0, bbox->y0, NR_EPSILON) || !NR_DF_TEST_CLOSE (v->bbox.x1, bbox->x1, NR_EPSILON) || !NR_DF_TEST_CLOSE (v->bbox.y1, bbox->y1, NR_EPSILON)) { v->bbox = *bbox; } break; } } } /* Mask views */ SPMaskView * sp_mask_view_new_prepend (SPMaskView *list, unsigned int key, NRArenaItem *arenaitem) { SPMaskView *new_mask_view = g_new (SPMaskView, 1); new_mask_view->next = list; new_mask_view->key = key; new_mask_view->arenaitem = nr_arena_item_ref(arenaitem); new_mask_view->bbox.x0 = new_mask_view->bbox.x1 = 0.0; new_mask_view->bbox.y0 = new_mask_view->bbox.y1 = 0.0; return new_mask_view; } SPMaskView * sp_mask_view_list_remove (SPMaskView *list, SPMaskView *view) { if (view == list) { list = list->next; } else { SPMaskView *prev; prev = list; while (prev->next != view) prev = prev->next; prev->next = view->next; } nr_arena_item_unref (view->arenaitem); g_free (view); return list; } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :