/* * File : container.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.rt-thread.org/license/LICENSE * * Change Logs: * Date Author Notes * 2009-10-16 Bernard first version */ #include #include static void _rtgui_container_constructor(rtgui_container_t *container) { /* set event handler and init field */ rtgui_widget_set_event_handler(RTGUI_WIDGET(container), rtgui_container_event_handler); rtgui_list_init(&(container->children)); /* set focused widget to itself */ container->focused = RTGUI_WIDGET(container); /* set container as focusable widget */ RTGUI_WIDGET(container)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE; } static void _rtgui_container_destructor(rtgui_container_t *container) { /* destroy children of container */ rtgui_container_destroy_children(container); } static void _rtgui_container_update_toplevel(rtgui_container_t* container) { struct rtgui_list_node* node; rtgui_list_foreach(node, &(container->children)) { rtgui_widget_t* child = rtgui_list_entry(node, rtgui_widget_t, sibling); /* set child toplevel */ child->toplevel = rtgui_widget_get_toplevel(RTGUI_WIDGET(container)); if (RTGUI_IS_CONTAINER(child)) { _rtgui_container_update_toplevel(RTGUI_CONTAINER(child)); } } } rtgui_type_t *rtgui_container_type_get(void) { static rtgui_type_t *container_type = RT_NULL; if (!container_type) { container_type = rtgui_type_create("container", RTGUI_WIDGET_TYPE, sizeof(rtgui_container_t), RTGUI_CONSTRUCTOR(_rtgui_container_constructor), RTGUI_DESTRUCTOR(_rtgui_container_destructor)); } return container_type; } rt_bool_t rtgui_container_dispatch_event(rtgui_container_t *container, rtgui_event_t* event) { /* handle in child widget */ struct rtgui_list_node* node; rtgui_list_foreach(node, &(container->children)) { struct rtgui_widget* w; w = rtgui_list_entry(node, struct rtgui_widget, sibling); if (w->event_handler(w, event) == RT_TRUE) return RT_TRUE; } return RT_FALSE; } rt_bool_t rtgui_container_dispatch_mouse_event(rtgui_container_t *container, struct rtgui_event_mouse* event) { /* handle in child widget */ struct rtgui_list_node* node; rtgui_list_foreach(node, &(container->children)) { struct rtgui_widget* w; w = rtgui_list_entry(node, struct rtgui_widget, sibling); if (rtgui_rect_contains_point(&(w->extent), event->x, event->y) == RT_EOK) { if (w->event_handler(w, (rtgui_event_t*)event) == RT_TRUE) return RT_TRUE; } } return RT_FALSE; } rt_bool_t rtgui_container_event_handler(rtgui_widget_t* widget, rtgui_event_t* event) { rtgui_container_t *container = RTGUI_CONTAINER(widget); switch (event->type) { case RTGUI_EVENT_PAINT: #ifndef RTGUI_USING_SMALL_SIZE if (widget->on_draw != RT_NULL) { return widget->on_draw(widget, event); } #endif rtgui_container_dispatch_event(container, event); break; case RTGUI_EVENT_KBD: #ifndef RTGUI_USING_SMALL_SIZE if (widget->on_key != RT_NULL) { return widget->on_key(widget, event); } else #endif { /* let parent to handle keyboard event */ if (widget->parent != RT_NULL && widget->parent != widget->toplevel) { return widget->parent->event_handler(widget->parent, event); } } break; case RTGUI_EVENT_MOUSE_BUTTON: /* handle in child widget */ if (rtgui_container_dispatch_mouse_event(container, (struct rtgui_event_mouse*)event) == RT_FALSE) { #ifndef RTGUI_USING_SMALL_SIZE /* handle event in current widget */ if (widget->on_mouseclick != RT_NULL) { return widget->on_mouseclick(widget, event); } #endif } else return RT_TRUE; break; case RTGUI_EVENT_MOUSE_MOTION: if (rtgui_container_dispatch_mouse_event(container, (struct rtgui_event_mouse*)event) == RT_FALSE) { #ifndef RTGUI_USING_SMALL_SIZE #if 0 /* handle event in current widget */ if (widget->on_mousemotion != RT_NULL) { return widget->on_mousemotion(widget, event); } #endif #endif } else return RT_TRUE; break; case RTGUI_EVENT_COMMAND: if (rtgui_container_dispatch_event(container, event) == RT_FALSE) { #ifndef RTGUI_USING_SMALL_SIZE if (widget->on_command != RT_NULL) { return widget->on_command(widget, event); } #endif } else return RT_TRUE; break; case RTGUI_EVENT_RESIZE: if (rtgui_container_dispatch_event(container, event) == RT_FALSE) { #ifndef RTGUI_USING_SMALL_SIZE if (widget->on_size != RT_NULL) return widget->on_size(widget, event); #endif } else return RT_TRUE; break; default: /* call parent widget event handler */ return rtgui_widget_event_handler(widget, event); } return RT_FALSE; } /* * This function will add a child to a container widget * Note: this function will not change the widget layout * the layout is the responsibility of layout widget, such as box. */ void rtgui_container_add_child(rtgui_container_t *container, rtgui_widget_t* child) { RT_ASSERT(container != RT_NULL); RT_ASSERT(child != RT_NULL); /* set parent and toplevel widget */ child->parent = RTGUI_WIDGET(container); /* put widget to parent's children list */ rtgui_list_append(&(container->children), &(child->sibling)); /* update children toplevel */ if (RTGUI_WIDGET(container)->toplevel != RT_NULL && RTGUI_IS_TOPLEVEL(RTGUI_WIDGET(container)->toplevel)) { child->toplevel = rtgui_widget_get_toplevel(RTGUI_WIDGET(container)); /* update all child toplevel */ if (RTGUI_IS_CONTAINER(child)) { _rtgui_container_update_toplevel(RTGUI_CONTAINER(child)); } } } /* remove a child to widget */ void rtgui_container_remove_child(rtgui_container_t *container, rtgui_widget_t* child) { RT_ASSERT(container != RT_NULL); RT_ASSERT(child != RT_NULL); if (child == container->focused) { /* set focused to itself */ container->focused = RTGUI_WIDGET(container); rtgui_widget_focus(RTGUI_WIDGET(container)); } /* remove widget from parent's children list */ rtgui_list_remove(&(container->children), &(child->sibling)); /* set parent and toplevel widget */ child->parent = RT_NULL; child->toplevel = RT_NULL; } /* destroy all children of container */ void rtgui_container_destroy_children(rtgui_container_t *container) { struct rtgui_list_node* node; if (container == RT_NULL) return; node = container->children.next; while (node != RT_NULL) { rtgui_widget_t* child = rtgui_list_entry(node, rtgui_widget_t, sibling); if (RTGUI_IS_CONTAINER(child)) { /* break parent firstly */ child->parent = RT_NULL; /* destroy children of child */ rtgui_container_destroy_children(RTGUI_CONTAINER(child)); } /* remove widget from parent's children list */ rtgui_list_remove(&(container->children), &(child->sibling)); /* set parent and toplevel widget */ child->parent = RT_NULL; /* destroy object and remove from parent */ rtgui_object_destroy(RTGUI_OBJECT(child)); node = container->children.next; } container->children.next = RT_NULL; container->focused = RTGUI_WIDGET(container); if (RTGUI_WIDGET(container)->parent != RT_NULL) rtgui_widget_focus(RTGUI_WIDGET(container)); /* update widget clip */ rtgui_toplevel_update_clip(RTGUI_TOPLEVEL(RTGUI_WIDGET(container)->toplevel)); } rtgui_widget_t* rtgui_container_get_first_child(rtgui_container_t* container) { rtgui_widget_t* child = RT_NULL; if (container->children.next != RT_NULL) { child = rtgui_list_entry(container->children.next, rtgui_widget_t, sibling); } return child; }