rt-thread/examples/gui/demo_listview.c

/*
 * 程序清单：列表视图演示
 *
 * 这个例子会先创建出一个演示用的view，当点击上面的按钮时会按照模式显示的形式显示
 * 新的列表视图
 */
#include "demo_view.h"
#include <rtgui/widgets/label.h>
#include <rtgui/widgets/button.h>
#include <rtgui/widgets/window.h>
#include <rtgui/widgets/list_view.h>

static rtgui_workbench_t* workbench = RT_NULL;
static rtgui_list_view_t* _view = RT_NULL;
static rtgui_image_t* return_image = RT_NULL;

/* 列表项的动作函数 */
static void listitem_action(rtgui_widget_t *widget, void* parameter)
{
	char label_text[32];
	rtgui_win_t *win;
	rtgui_label_t *label;
	rtgui_rect_t rect = {0, 0, 150, 80};
	int no = (int)parameter;

	rtgui_rect_moveto(&rect, 20, 50);

	/* 显示消息窗口 */
	win = rtgui_win_create(RTGUI_TOPLEVEL(workbench),
		"窗口", &rect, RTGUI_WIN_STYLE_DEFAULT);

	rect.x1 += 20;
	rect.x2 -= 5;
	rect.y1 += 5;
	rect.y2 = rect.y1 + 20;

	/* 添加相应的标签 */
	rt_sprintf(label_text, "动作 %d", no);
	label = rtgui_label_create(label_text);

	rtgui_widget_set_rect(RTGUI_WIDGET(label), &rect);
	rtgui_container_add_child(RTGUI_CONTAINER(win), RTGUI_WIDGET(label));

	/* 非模态显示窗口 */
	rtgui_win_show(win, RT_FALSE);
}

/* 返回功能的动作函数 */
static void return_action(rtgui_widget_t* widget, void* parameter)
{
	rtgui_view_end_modal(RTGUI_VIEW(_view), RTGUI_MODAL_OK);
}

/* 各个列表项定义 */
static struct rtgui_list_item items[] =
{
	{"列表项1", RT_NULL, listitem_action, (void*)1},
	{"列表项2", RT_NULL, listitem_action, (void*)2},
	{"列表项3", RT_NULL, listitem_action, (void*)3},
	{"列表项4", RT_NULL, listitem_action, (void*)4},
	{"列表项5", RT_NULL, listitem_action, (void*)5},
	{"返回",    RT_NULL, return_action,    RT_NULL},
};

/* 打开列表视图用的按钮触发函数 */
static void open_btn_onbutton(rtgui_widget_t* widget, struct rtgui_event* event)
{
	rtgui_rect_t rect;

	/* 获得顶层的workbench */
	workbench = RTGUI_WORKBENCH(rtgui_widget_get_toplevel(widget));
	rtgui_widget_get_rect(RTGUI_WIDGET(workbench), &rect);

	/* 创建一个列表视图， 项指定为items */
	_view = rtgui_list_view_create(items, sizeof(items)/sizeof(struct rtgui_list_item),
		&rect, RTGUI_LIST_VIEW_LIST);
	/* 在workbench中添加相应的视图 */
	rtgui_workbench_add_view(workbench, RTGUI_VIEW(_view));

	/* 模式显示视图 */
	rtgui_view_show(RTGUI_VIEW(_view), RT_TRUE);
	rtgui_view_destroy(RTGUI_VIEW(_view));
	_view = RT_NULL;
}

/* 创建用于演示列表视图的视图 */
rtgui_view_t* demo_listview_view(rtgui_workbench_t* workbench)
{
	rtgui_rect_t rect;
	rtgui_view_t *view;
	rtgui_button_t* open_btn;

	view = demo_view(workbench, "列表视图演示");

	/* 添加动作按钮 */
	demo_view_get_rect(view, &rect);
	rect.x1 += 5;
	rect.x2 = rect.x1 + 80;
	rect.y1 += 30;
	rect.y2 = rect.y1 + 20;
	open_btn = rtgui_button_create("打开列表");
	rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(open_btn));
	rtgui_widget_set_rect(RTGUI_WIDGET(open_btn), &rect);
	rtgui_button_set_onbutton(open_btn, open_btn_onbutton);

	return view;
}