rt-thread/examples/gui/demo_view_benchmark.c

#include <rtgui/dc.h>
#include <rtgui/dc_hw.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/widgets/view.h>
#include "demo_view.h"

#if RTTHREAD_VERSION >= 10000
#define RAND(x1, x2) ((rand() % (x2 - x1)) + x1)

static rtgui_view_t* view = RT_NULL;
static int running = 0;

void _onidle(rtgui_widget_t* widget, rtgui_event_t *event)
{
	rtgui_color_t color;
	rtgui_rect_t rect, draw_rect;
	struct rtgui_dc *dc;

	/* <20><><EFBFBD>ÿؼ<C3BF><D8BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DC */
	// dc = rtgui_dc_hw_create(RTGUI_WIDGET(view)); 
	dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(view));
	if (dc == RT_NULL) return ;

	demo_view_get_logic_rect(RTGUI_VIEW(view), &rect);
	draw_rect.x1 = RAND(rect.x1, rect.x2);
	draw_rect.y1 = RAND(rect.y1, rect.y2);
	draw_rect.x2 = RAND(draw_rect.x1, rect.x2);
	draw_rect.y2 = RAND(draw_rect.y1, rect.y2);

	color = RTGUI_RGB(rand() % 255, rand() % 255, rand() % 255);
	RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(view)) = color;

	rtgui_dc_fill_rect(dc, &draw_rect);

	/* <20><>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> */
	rtgui_dc_end_drawing(dc);
}

void _draw_default(rtgui_widget_t* widget, rtgui_event_t* event)
{
	struct rtgui_dc* dc;
	rtgui_rect_t rect;

	/* <20><>Ϊ<EFBFBD>õ<EFBFBD><C3B5><EFBFBD>demo view<65><77><EFBFBD><EFBFBD><EFBFBD>汾<EFBFBD><E6B1BE><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֿؼ<D6BF><D8BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڻ<EFBFBD>ͼʱ<CDBC><CAB1>Ҫ<EFBFBD><D2AA>demo view<65>Ȼ<EFBFBD>ͼ */
	rtgui_view_event_handler(widget, event);

	/* <20><><EFBFBD>ÿؼ<C3BF><D8BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DC */
	dc = rtgui_dc_begin_drawing(widget);
	if (dc == RT_NULL) /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DC<44><43><EFBFBD><EFBFBD><EFBFBD>أ<EFBFBD><D8A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؼ<EFBFBD><D8BC>򸸿ؼ<F2B8B8BF><D8BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<D7B4><CCAC>DC<44>ǻ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD>ɹ<EFBFBD><C9B9>ģ<EFBFBD> */
		return ;

	/* <20><><EFBFBD><EFBFBD>demo view<65><77><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
	demo_view_get_logic_rect(RTGUI_VIEW(widget), &rect);

	/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
	RTGUI_WIDGET_BACKGROUND(widget) = default_background;
	rtgui_dc_fill_rect(dc, &rect);

	/* <20><>ʾ<EFBFBD><CABE>ʾ */
	rtgui_dc_draw_text(dc, "<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ/ֹͣ<CDA3><D6B9><EFBFBD><EFBFBD>...", &rect);

	/* <20><>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> */
	rtgui_dc_end_drawing(dc);
}

rt_bool_t benchmark_event_handler(rtgui_widget_t* widget, rtgui_event_t *event)
{
	if (event->type == RTGUI_EVENT_PAINT)
	{
		_draw_default(widget, event);
	}
	else if (event->type == RTGUI_EVENT_KBD)
	{
		struct rtgui_event_kbd *kbd = (struct rtgui_event_kbd*)event;

		if (RTGUI_KBD_IS_UP(kbd))
		{
			if (running)
			{
				/* stop */
				rtgui_thread_set_onidle(RT_NULL);
				_draw_default(widget, event);
			}
			else
			{
				/* run */
				rtgui_thread_set_onidle(_onidle);
			}

			running = !running;
		}
		return RT_TRUE;
	}
	else
	{
		/* <20><><EFBFBD><EFBFBD>Ĭ<EFBFBD>ϵ<EFBFBD><CFB5>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
		return rtgui_view_event_handler(widget, event);
	}

	return RT_FALSE;
}

rtgui_view_t *demo_view_benchmark(rtgui_workbench_t* workbench)
{
	srand(100);
	view = demo_view(workbench, "<EFBFBD><EFBFBD>ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
	rtgui_widget_set_event_handler(RTGUI_WIDGET(view), benchmark_event_handler);

	return view;
}
#endif