rt-thread/examples/gui/demo_view.c

#include <rtgui/rtgui.h>
#include <rtgui/rtgui_app.h>

#include <rtgui/widgets/container.h>
#include <rtgui/widgets/notebook.h>
#include <rtgui/widgets/button.h>
#include <rtgui/widgets/staticline.h>
#include <rtgui/widgets/box.h>

extern struct rtgui_notebook *the_notebook;

void demo_view_next(struct rtgui_object *object, struct rtgui_event *event)
{
	rtgui_notebook_set_current_by_index(the_notebook,
			(rtgui_notebook_get_current_index(the_notebook) + 1) %
			rtgui_notebook_get_count(the_notebook));
}

void demo_view_prev(struct rtgui_object *object, struct rtgui_event *event)
{
	rt_int16_t cur_idx = rtgui_notebook_get_current_index(the_notebook);

	if (cur_idx == 0)
		rtgui_notebook_set_current_by_index(the_notebook,
			rtgui_notebook_get_count(the_notebook) - 1);
	else
		rtgui_notebook_set_current_by_index(the_notebook,
			--cur_idx);
}

rtgui_container_t* demo_view(const char *title)
{
	struct rtgui_container  *container;
	struct rtgui_label      *label;
	struct rtgui_staticline *line;
	struct rtgui_button     *next_btn, *prev_btn;
	struct rtgui_rect       rect;

	container = rtgui_container_create();
	if (container == RT_NULL)
		return RT_NULL;

	rtgui_notebook_add(the_notebook, title, RTGUI_WIDGET(container));

	/* 获得视图的位置信息(在加入到 notebook 中时，notebook 会自动调整 container
	 * 的大小) */
	rtgui_widget_get_rect(RTGUI_WIDGET(container), &rect);
	rtgui_widget_rect_to_device(RTGUI_WIDGET(container), &rect);
	rect.x1 += 5;
	rect.y1 += 5;
	rect.x2 -= 5;
	rect.y2 = rect.y1 + 20;

	/* 创建标题用的标签 */
	label = rtgui_label_create(title);
	/* 设置标签位置信息 */
	rtgui_widget_set_rect(RTGUI_WIDGET(label), &rect);
	/* 添加标签到视图中 */
	rtgui_container_add_child(container, RTGUI_WIDGET(label));

	rect.y1 += 20;
	rect.y2 += 20;
	/* 创建一个水平的 staticline 线 */
	line = rtgui_staticline_create(RTGUI_HORIZONTAL);
	/* 设置静态线的位置信息 */
	rtgui_widget_set_rect(RTGUI_WIDGET(line), &rect);
	/* 添加静态线到视图中 */
	rtgui_container_add_child(container, RTGUI_WIDGET(line));

	/* 获得视图的位置信息 */
	rtgui_widget_get_rect(RTGUI_WIDGET(container), &rect);
	rtgui_widget_rect_to_device(RTGUI_WIDGET(container), &rect);
	rect.x2 -= 5;
	rect.y2 -= 5;
	rect.x1 = rect.x2 - 100;
	rect.y1 = rect.y2 - 25;

	/* 创建"下一个"按钮 */
	next_btn = rtgui_button_create("下一个");
	/* 设置onbutton动作到demo_view_next函数 */
	rtgui_button_set_onbutton(next_btn, demo_view_next);
	/* 设置按钮的位置信息 */
	rtgui_widget_set_rect(RTGUI_WIDGET(next_btn), &rect);
	/* 添加按钮到视图中 */
	rtgui_container_add_child(container, RTGUI_WIDGET(next_btn));

	/* 获得视图的位置信息 */
	rtgui_widget_get_rect(RTGUI_WIDGET(container), &rect);
	rtgui_widget_rect_to_device(RTGUI_WIDGET(container), &rect);
	rect.x1 += 5;
	rect.y2 -= 5;
	rect.x2 = rect.x1 + 100;
	rect.y1 = rect.y2 - 25;

	/* 创建"上一个"按钮 */
	prev_btn = rtgui_button_create("上一个");
	/* 设置onbutton动作到demo_view_prev函数 */
	rtgui_button_set_onbutton(prev_btn, demo_view_prev);
	/* 设置按钮的位置信息 */
	rtgui_widget_set_rect(RTGUI_WIDGET(prev_btn), &rect);
	/* 添加按钮到视图中 */
	rtgui_container_add_child(container, RTGUI_WIDGET(prev_btn));

	/* 返回创建的视图 */
	return container;
}

/* 这个函数用于返回演示视图的对外可用区域 */
void demo_view_get_rect(rtgui_container_t* container, rtgui_rect_t *rect)
{
	RT_ASSERT(container != RT_NULL);
	RT_ASSERT(rect != RT_NULL);

	rtgui_widget_get_rect(RTGUI_WIDGET(container), rect);
	rtgui_widget_rect_to_device(RTGUI_WIDGET(container), rect);
	/* 去除演示标题和下方按钮的区域 */
	rect->y1 += 45;
	rect->y2 -= 35;
}

void demo_view_get_logic_rect(rtgui_container_t* container, rtgui_rect_t *rect)
{
	RT_ASSERT(container != RT_NULL);
	RT_ASSERT(rect != RT_NULL);

	rtgui_widget_get_rect(RTGUI_WIDGET(container), rect);
	/* 去除演示标题和下方按钮的区域 */
	rect->y1 += 45;
	rect->y2 -= 35;
}

/* 当是标准版本时，这个函数用于返回自动布局引擎box控件 */
#ifndef RTGUI_USING_SMALL_SIZE
struct rtgui_box* demo_view_create_box(struct rtgui_container *container, int orient)
{
	rtgui_rect_t rect;
	struct rtgui_box* box;

	/* 获得视图的位置信息 */
	rtgui_widget_get_rect(RTGUI_WIDGET(container), &rect);
	rect.y1 += 45;
	rect.y2 -= 25;

	/* 创建一个自动布局引擎 */
	box = rtgui_box_create(orient, 5);
	/* 添加box控件到视图中 */
	rtgui_container_add_child(container, RTGUI_WIDGET(box));

	return box;
}
#endif