562 lines
13 KiB
C
562 lines
13 KiB
C
/*
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* File : widget.c
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* This file is part of RTGUI in RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-10-04 Bernard first version
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*/
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#include <rtgui/widgets/widget.h>
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#include <rtgui/widgets/window.h>
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#include <rtgui/widgets/view.h>
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static void _rtgui_widget_constructor(rtgui_widget_t *widget)
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{
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if (!widget) return;
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/* set default flag */
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widget->flag = RTGUI_WIDGET_FLAG_DEFAULT;
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/* init list */
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rtgui_list_init(&(widget->sibling));
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/* init gc */
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widget->gc.foreground = default_foreground;
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widget->gc.background = default_background;
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widget->gc.font = rtgui_font_default();
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widget->gc.textalign = RTGUI_ALIGN_LEFT | RTGUI_ALIGN_TOP;
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widget->align = RTGUI_ALIGN_LEFT | RTGUI_ALIGN_TOP;
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/* set parent and toplevel root */
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widget->parent = RT_NULL;
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widget->toplevel = RT_NULL;
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/* some common event handler */
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widget->on_focus_in = RT_NULL;
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widget->on_focus_out = RT_NULL;
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#ifndef RTGUI_USING_SMALL_SIZE
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widget->on_draw = RT_NULL;
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widget->on_mouseclick = RT_NULL;
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widget->on_key = RT_NULL;
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widget->on_size = RT_NULL;
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widget->on_command = RT_NULL;
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#endif
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/* set default event handler */
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widget->event_handler = rtgui_widget_event_handler;
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/* does not set widget extent and only set clip_sync to zero */
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rtgui_region_init(&(widget->clip));
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#ifndef RTGUI_USING_SMALL_SIZE
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widget->clip_sync = 0;
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#endif
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}
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/* Destroys the widget */
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static void _rtgui_widget_destructor(rtgui_widget_t *widget)
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{
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if (widget == RT_NULL) return;
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if (widget->parent != RT_NULL)
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{
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/* remove widget from parent's children list */
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rtgui_list_remove(&(RTGUI_CONTAINER(widget->parent)->children), &(widget->sibling));
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widget->parent = RT_NULL;
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}
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/* fini clip region */
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rtgui_region_fini(&(widget->clip));
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#ifndef RTGUI_USING_SMALL_SIZE
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widget->clip_sync = 0;
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#endif
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}
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rtgui_type_t *rtgui_widget_type_get(void)
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{
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static rtgui_type_t *widget_type = RT_NULL;
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if (!widget_type)
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{
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widget_type = rtgui_type_create("rtgui_widget", RTGUI_OBJECT_TYPE,
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sizeof(rtgui_widget_t), RTGUI_CONSTRUCTOR(_rtgui_widget_constructor),
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RTGUI_DESTRUCTOR(_rtgui_widget_destructor));
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}
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return widget_type;
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}
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rtgui_widget_t *rtgui_widget_create(rtgui_type_t *widget_type)
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{
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struct rtgui_widget* widget;
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widget = RTGUI_WIDGET(rtgui_object_create(widget_type));
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return widget;
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}
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void rtgui_widget_destroy(rtgui_widget_t* widget)
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{
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rtgui_object_destroy(RTGUI_OBJECT(widget));
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}
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void rtgui_widget_set_rect(rtgui_widget_t* widget, rtgui_rect_t* rect)
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{
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if (widget == RT_NULL || rect == RT_NULL) return;
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widget->extent = *rect;
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#ifndef RTGUI_USING_SMALL_SIZE
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/* reset mini width and height */
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widget->mini_width = rtgui_rect_width(widget->extent);
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widget->mini_height = rtgui_rect_height(widget->extent);
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#endif
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/* it's not empty, fini it */
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if (rtgui_region_not_empty(&(widget->clip)))
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{
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rtgui_region_fini(&(widget->clip));
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}
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/* reset clip info */
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rtgui_region_init_with_extents(&(widget->clip), rect);
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}
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#ifndef RTGUI_USING_SMALL_SIZE
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void rtgui_widget_set_miniwidth(rtgui_widget_t* widget, int width)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->mini_width = width;
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}
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void rtgui_widget_set_miniheight(rtgui_widget_t* widget, int height)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->mini_height = height;
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}
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#endif
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/*
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* This function moves widget and its children to a logic point
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*/
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void rtgui_widget_move_to_logic(rtgui_widget_t* widget, int dx, int dy)
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{
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struct rtgui_list_node* node;
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rtgui_widget_t* child;
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if (widget == RT_NULL) return;
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rtgui_rect_moveto(&(widget->extent), dx, dy);
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/* move each child */
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if (RTGUI_IS_CONTAINER(widget))
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{
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rtgui_list_foreach(node, &(RTGUI_CONTAINER(widget)->children))
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{
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child = rtgui_list_entry(node, rtgui_widget_t, sibling);
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rtgui_widget_move_to_logic(child, dx, dy);
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}
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}
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}
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void rtgui_widget_set_event_handler(rtgui_widget_t* widget, rtgui_event_handler_ptr handler)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->event_handler = handler;
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}
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void rtgui_widget_get_rect(rtgui_widget_t* widget, rtgui_rect_t *rect)
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{
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RT_ASSERT(widget != RT_NULL);
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if (rect != RT_NULL)
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{
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rect->x1 = rect->y1 = 0;
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rect->x2 = widget->extent.x2 - widget->extent.x1;
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rect->y2 = widget->extent.y2 - widget->extent.y1;
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}
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}
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void rtgui_widget_set_onfocus(rtgui_widget_t* widget, rtgui_event_handler_ptr handler)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->on_focus_in = handler;
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}
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void rtgui_widget_set_onunfocus(rtgui_widget_t* widget, rtgui_event_handler_ptr handler)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->on_focus_out = handler;
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}
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#ifndef RTGUI_USING_SMALL_SIZE
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void rtgui_widget_set_ondraw(rtgui_widget_t* widget, rtgui_event_handler_ptr handler)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->on_draw = handler;
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}
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void rtgui_widget_set_onmouseclick(rtgui_widget_t* widget, rtgui_event_handler_ptr handler)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->on_mouseclick = handler;
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}
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void rtgui_widget_set_onkey(rtgui_widget_t* widget, rtgui_event_handler_ptr handler)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->on_key = handler;
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}
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void rtgui_widget_set_onsize(rtgui_widget_t* widget, rtgui_event_handler_ptr handler)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->on_size = handler;
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}
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void rtgui_widget_set_oncommand(rtgui_widget_t* widget, rtgui_event_handler_ptr handler)
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{
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RT_ASSERT(widget != RT_NULL);
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widget->on_command = handler;
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}
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#endif
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/**
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* @brief Focuses the widget. The focused widget is the widget which can receive the keyboard events
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* @param widget a widget
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* @note The widget has to be attached to a toplevel widget, otherwise it will have no effect
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*/
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void rtgui_widget_focus(rtgui_widget_t *widget)
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{
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rtgui_widget_t *focused;
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rtgui_container_t *parent;
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RT_ASSERT(widget != RT_NULL);
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if (!widget->parent || !RTGUI_WIDGET_IS_FOCUSABLE(widget) || !RTGUI_WIDGET_IS_ENABLE(widget))
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return;
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/* set widget as focused */
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widget->flag |= RTGUI_WIDGET_FLAG_FOCUS;
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/* get parent container */
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parent = RTGUI_CONTAINER(widget->parent);
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/* get old focused widget */
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focused = parent->focused;
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if (focused == widget) return ; /* it's the same focused widget */
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if (focused != RT_NULL)
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rtgui_widget_unfocus(focused);
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/* set widget as focused widget in parent link */
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parent->focused = widget;
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while (RTGUI_WIDGET(parent)->parent != RT_NULL)
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{
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parent = RTGUI_CONTAINER(RTGUI_WIDGET(parent)->parent);
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parent->focused = widget;
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/* if the parent is hide, break it */
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if (RTGUI_WIDGET_IS_HIDE(RTGUI_WIDGET(parent))) break;
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}
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/* invoke on focus in call back */
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if (widget->on_focus_in != RT_NULL)
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widget->on_focus_in(widget, RT_NULL);
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}
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/**
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* @brief Unfocused the widget
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* @param widget a widget
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*/
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void rtgui_widget_unfocus(rtgui_widget_t *widget)
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{
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RT_ASSERT(widget != RT_NULL);
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if (!widget->toplevel || !RTGUI_WIDGET_IS_FOCUSED(widget))
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return;
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widget->flag &= ~RTGUI_WIDGET_FLAG_FOCUS;
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if (widget->on_focus_out != RT_NULL)
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widget->on_focus_out(widget, RT_NULL);
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/* refresh widget */
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rtgui_widget_update(widget);
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}
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void rtgui_widget_point_to_device(rtgui_widget_t* widget, rtgui_point_t* point)
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{
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RT_ASSERT(widget != RT_NULL);
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if (point != RT_NULL)
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{
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point->x += widget->extent.x1;
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point->y += widget->extent.y1;
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}
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}
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void rtgui_widget_rect_to_device(rtgui_widget_t* widget, rtgui_rect_t* rect)
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{
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RT_ASSERT(widget != RT_NULL);
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if (rect != RT_NULL)
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{
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rect->x1 += widget->extent.x1;
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rect->x2 += widget->extent.x1;
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rect->y1 += widget->extent.y1;
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rect->y2 += widget->extent.y1;
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}
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}
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void rtgui_widget_point_to_logic(rtgui_widget_t* widget, rtgui_point_t* point)
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{
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RT_ASSERT(widget != RT_NULL);
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if (point != RT_NULL)
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{
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point->x -= widget->extent.x1;
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point->y -= widget->extent.y1;
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}
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}
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void rtgui_widget_rect_to_logic(rtgui_widget_t* widget, rtgui_rect_t* rect)
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{
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RT_ASSERT(widget != RT_NULL);
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if (rect != RT_NULL)
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{
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rect->x1 -= widget->extent.x1;
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rect->x2 -= widget->extent.x1;
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rect->y1 -= widget->extent.y1;
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rect->y2 -= widget->extent.y1;
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}
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}
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rtgui_widget_t* rtgui_widget_get_toplevel(rtgui_widget_t* widget)
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{
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rtgui_widget_t* r;
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RT_ASSERT(widget != RT_NULL);
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if (widget->toplevel) return widget->toplevel;
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r = widget;
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/* get the toplevel widget */
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while (r->parent != RT_NULL) r = r->parent;
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/* set toplevel */
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widget->toplevel = r;
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return r;
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}
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rt_bool_t rtgui_widget_event_handler(rtgui_widget_t* widget, rtgui_event_t* event)
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{
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#ifndef RTGUI_USING_SMALL_SIZE
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switch (event->type)
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{
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case RTGUI_EVENT_PAINT:
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if (widget->on_draw != RT_NULL) return widget->on_draw(widget, event);
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break;
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case RTGUI_EVENT_KBD:
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if (widget->on_key != RT_NULL) return widget->on_key(widget, event);
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break;
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case RTGUI_EVENT_MOUSE_BUTTON:
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if (widget->on_mouseclick != RT_NULL) return widget->on_mouseclick(widget, event);
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break;
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case RTGUI_EVENT_COMMAND:
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if (widget->on_command != RT_NULL) return widget->on_command(widget, event);
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break;
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case RTGUI_EVENT_RESIZE:
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if (widget->on_size != RT_NULL) return widget->on_size(widget, event);
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break;
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}
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#endif
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return RT_FALSE;
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}
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/*
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* This function updates the clip info of widget
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*/
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void rtgui_widget_update_clip(rtgui_widget_t* widget)
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{
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struct rtgui_list_node* node;
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rtgui_widget_t *parent;
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/* no widget or widget is hide, no update clip */
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if (widget == RT_NULL || RTGUI_WIDGET_IS_HIDE(widget)) return;
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parent = widget->parent;
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/* if there is no parent, do not update clip (please use toplevel widget API) */
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if (parent == RT_NULL) return;
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#ifndef RTGUI_USING_SMALL_SIZE
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/* increase clip sync */
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widget->clip_sync ++;
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#endif
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/* reset clip to extent */
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rtgui_region_reset(&(widget->clip), &(widget->extent));
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/* limit widget extent in parent extent */
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rtgui_region_intersect(&(widget->clip), &(widget->clip), &(parent->clip));
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/* get the no transparent parent */
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while (parent != RT_NULL && parent->flag & RTGUI_WIDGET_FLAG_TRANSPARENT)
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{
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parent = parent->parent;
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}
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if (parent != RT_NULL)
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{
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/* subtract widget clip in parent clip */
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if (!(widget->flag & RTGUI_WIDGET_FLAG_TRANSPARENT))
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{
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rtgui_region_subtract_rect(&(parent->clip), &(parent->clip),
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&(widget->extent));
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}
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}
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/*
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* note: since the layout widget introduction, the sibling widget will not
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* intersect.
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*/
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/* if it's a container object, update the clip info of children */
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if (RTGUI_IS_CONTAINER(widget))
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{
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rtgui_widget_t* child;
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rtgui_list_foreach(node, &(RTGUI_CONTAINER(widget)->children))
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{
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child = rtgui_list_entry(node, rtgui_widget_t, sibling);
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rtgui_widget_update_clip(child);
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}
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}
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}
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void rtgui_widget_show(rtgui_widget_t* widget)
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{
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/* there is no parent or the parent is hide, no show at all */
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if (widget->parent == RT_NULL ||
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RTGUI_WIDGET_IS_HIDE(widget->parent)) return;
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/* update the clip info of widget */
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RTGUI_WIDGET_UNHIDE(widget);
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rtgui_widget_update_clip(widget);
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}
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void rtgui_widget_hide(rtgui_widget_t* widget)
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{
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/* hide this widget */
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RTGUI_WIDGET_HIDE(widget);
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/* update the clip info of widget parent */
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rtgui_widget_update_clip(widget->parent);
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}
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rtgui_color_t rtgui_widget_get_parent_foreground(rtgui_widget_t* widget)
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{
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rtgui_widget_t* parent;
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/* get parent widget */
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parent = widget->parent;
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while (parent->parent != RT_NULL && (RTGUI_WIDGET_FLAG(parent) & RTGUI_WIDGET_FLAG_TRANSPARENT))
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parent = parent->parent;
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/* get parent's color */
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if (parent != RT_NULL)
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return RTGUI_WIDGET_FOREGROUND(parent);
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return RTGUI_WIDGET_FOREGROUND(widget);
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}
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rtgui_color_t rtgui_widget_get_parent_background(rtgui_widget_t* widget)
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{
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rtgui_widget_t* parent;
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/* get parent widget */
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parent = widget->parent;
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while (parent->parent != RT_NULL && (RTGUI_WIDGET_FLAG(parent) & RTGUI_WIDGET_FLAG_TRANSPARENT))
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parent = parent->parent;
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/* get parent's color */
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if (parent != RT_NULL)
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return RTGUI_WIDGET_BACKGROUND(parent);
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return RTGUI_WIDGET_BACKGROUND(widget);
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}
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void rtgui_widget_update(rtgui_widget_t* widget)
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{
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struct rtgui_event_paint paint;
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RTGUI_EVENT_PAINT_INIT(&paint);
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paint.wid = RT_NULL;
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RT_ASSERT(widget != RT_NULL);
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if (widget->event_handler != RT_NULL)
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{
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widget->event_handler(widget, &paint.parent);
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}
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}
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rtgui_widget_t* rtgui_widget_get_next_sibling(rtgui_widget_t* widget)
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{
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rtgui_widget_t* sibling = RT_NULL;
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if (widget->sibling.next != RT_NULL)
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{
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sibling = rtgui_list_entry(widget->sibling.next, rtgui_widget_t, sibling);
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}
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return sibling;
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}
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rtgui_widget_t* rtgui_widget_get_prev_sibling(rtgui_widget_t* widget)
|
|
{
|
|
struct rtgui_list_node* node;
|
|
rtgui_widget_t *sibling, *parent;
|
|
|
|
node = RT_NULL; sibling = RT_NULL;
|
|
parent = widget->parent;
|
|
if (parent != RT_NULL)
|
|
{
|
|
rtgui_list_foreach(node, &(RTGUI_CONTAINER(parent)->children))
|
|
{
|
|
if (node->next == &(widget->sibling))
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (node != RT_NULL)
|
|
sibling = rtgui_list_entry(node, rtgui_widget_t, sibling);
|
|
|
|
return sibling;
|
|
}
|