diff options
Diffstat (limited to 'libccc/0.0.4/ccc/cc-item-view.c')
| -rw-r--r-- | libccc/0.0.4/ccc/cc-item-view.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/libccc/0.0.4/ccc/cc-item-view.c b/libccc/0.0.4/ccc/cc-item-view.c new file mode 100644 index 0000000..6fd5057 --- /dev/null +++ b/libccc/0.0.4/ccc/cc-item-view.c @@ -0,0 +1,142 @@ +/* this file is part of libccc, criawips' cairo-based canvas + * + * AUTHORS + * Sven Herzberg <herzi@gnome-de.org> + * + * Copyright (C) 2005 Sven Herzberg + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +#include <ccc/cc-item-view.h> + +#include "glib-helpers.h" +#include "gobject-helpers.h" + +G_DEFINE_IFACE(CcItemView, cc_item_view, G_TYPE_INTERFACE); + +static void +civ_notify_all_bounds(CcItemView* self, CcView* view, CcDRect* rect, CcItem* item) { + CC_ITEM_VIEW_GET_CLASS(self)->notify_all_bounds(self, item, view, rect); +} + +static void +civ_item_dirty(CcItemView* self, CcView* view, CcDRect const* dirty, CcItem* item) { + CC_ITEM_VIEW_GET_CLASS(self)->item_dirty(self, item, view, dirty); +} + +static void +civ_update_all_bounds(CcItem* item, CcView* view) { + g_list_foreach(item->children, G_FUNC(civ_update_all_bounds), view); + + cc_item_update_bounds_for_view(item, view); +} + +static void +civ_item_added(CcItemView* self, gint position, CcItem* child, CcItem* item) { + CC_ITEM_VIEW_GET_CLASS(self)->item_added(self, item, position, child); +} + +static void +civ_item_removed(CcItemView* self, gint position, CcItem* child, CcItem* item) { + CC_ITEM_VIEW_GET_CLASS(self)->item_removed(self, item, position, child); +} + +void +cc_item_view_register(CcItemView* self, CcItem* item) { + GCallback callback; + + g_return_if_fail(CC_IS_ITEM_VIEW(self)); + g_return_if_fail(CC_IS_ITEM(item)); + + if(CC_IS_VIEW(self)) { + cc_item_add_view(item, CC_VIEW(self)); + } + + callback = G_CALLBACK(CC_ITEM_VIEW_GET_CLASS(self)->notify_all_bounds); + if(callback) { + g_signal_connect_swapped(item, "all-bounds-changed", + G_CALLBACK(civ_notify_all_bounds), self); + + if(CC_IS_VIEW(self)) { + civ_update_all_bounds(item, CC_VIEW(self)); + } else if(CC_IS_ITEM(self)) { + cc_item_update_bounds(item, NULL); + } + } + + callback = G_CALLBACK(CC_ITEM_VIEW_GET_CLASS(self)->item_dirty); + if(callback) { + g_signal_connect_swapped(item, "dirty", + G_CALLBACK(civ_item_dirty), self); + if(CC_IS_VIEW(self) && cc_item_get_all_bounds(item, CC_VIEW(self))) { + CcDRect const* all_bounds = cc_item_get_all_bounds(item, CC_VIEW(self)); + CC_ITEM_VIEW_GET_CLASS(self)->item_dirty(self, item, CC_VIEW(self), all_bounds); + } + } + + callback = G_CALLBACK(CC_ITEM_VIEW_GET_CLASS(self)->item_added); + if(callback) { + g_signal_connect_swapped(item, "item-added", + G_CALLBACK(civ_item_added), self); + + // FIXME: emit for each child + } + + callback = G_CALLBACK(CC_ITEM_VIEW_GET_CLASS(self)->item_removed); + if(callback) { + g_signal_connect_swapped(item, "item-removed", + G_CALLBACK(civ_item_removed), self); + } +} + +static void +civ_emit_dirty_per_view(CcItem* item, CcView* view, CcItemView* self) { + CcDRect const* all_bounds = cc_item_get_all_bounds(item, view); + if(all_bounds) { + civ_item_dirty(self, view, all_bounds, item); + } +} + +void +cc_item_view_unregister(CcItemView* self, CcItem* item) { + CcItemViewIface* iface; + + g_return_if_fail(CC_IS_ITEM_VIEW(self)); + g_return_if_fail(CC_IS_ITEM(item)); + + iface = CC_ITEM_VIEW_GET_CLASS(self); + + if(iface->item_dirty) { + if(CC_IS_VIEW(self)) { + civ_emit_dirty_per_view(item, CC_VIEW(self), self); + } + g_signal_handlers_disconnect_by_func(item, civ_item_dirty, self); + } + g_signal_handlers_disconnect_by_func(item, civ_notify_all_bounds, self); + + if(iface->item_removed) { + // FIXME: emit for each child in reverse order + + g_signal_handlers_disconnect_by_func(item, civ_item_removed, self); + } + g_signal_handlers_disconnect_by_func(item, civ_item_added, self); + + if(CC_IS_VIEW(self)) { + cc_item_remove_view(item, CC_VIEW(self)); + } +} + |