【RealTouch应用开发教程】第八讲、rtgui字库的使用

发布于 2012-11-27 00:21:04 浏览：9323 订阅该版

6 个回答

prife 2012-11-27

这家伙很懒，什么也没写！

发一个山寨版本，直接使用rtgui，不需要realtouch硬件亦可以工作。

```

#include <rtthread.h>

#include <rtgui/rtgui.h>
#include <rtgui/rtgui_app.h>
#include <rtgui/widgets/window.h>
#include <rtgui/widgets/label.h>
#include <rtgui/widgets/button.h>
#include <rtgui/dc.h>
#include <rtgui/font.h>
#include <rtgui/driver.h>

/* 在LCD上创建一个主窗口，这是第一个窗口 */

#define MIN(x,y) ((x) > (y) ? (y) : (x))

struct rtgui_hz_file_font hz24=
{
	{RT_NULL},              /* cache root       */
	0,                      /* cache size       */
	24,                     /* font size        */
	(24*24/8),              /* font data size   */
	-1,                     /* fd               */
	"/hz24.fnt"   /* font_fn          */
};

struct rtgui_font rtgui_font_hz24 =
{
	"hz",               /* family */
	24,                 /* height */
	1,                  /* refer count */
	&rtgui_hz_file_font_engine,/* font engine */
	(void *) &hz24,     /* font private data */
};

static int dc_draw(struct rtgui_widget *object)
{
	struct rtgui_rect rect, size;
	struct rtgui_dc * dc;
	rtgui_graphic_driver_get_rect(rtgui_graphic_driver_get_default(), &rect);

dc = rtgui_dc_begin_drawing(object);

/* draw English word */
	RTGUI_DC_FC(dc) = RTGUI_RGB(0xFF, 0, 0);
	size.x1 = rect.x2/4;
	size.y1 = rect.y2/4;
	size.x2 = rect.x2;
	size.y2 = rect.y2/2;
	rtgui_dc_draw_text(dc, "hello, world", &size);

/* draw Chinese word */
	RTGUI_DC_FC(dc) = RTGUI_RGB(0, 0, 0xFF);
	RTGUI_WIDGET_FONT(object) = rtgui_font_refer("hz", 24);
	size.x1 = rect.x2/4;
	size.y1 = rect.y2/2;
	size.x2 = rect.x2;
	size.y2 = rect.y2/4 * 3;
	rtgui_dc_draw_text(dc, "我是中国人, I am Chinese.", &size);

rtgui_dc_end_drawing(dc);
	return 0;
}

static rt_bool_t event_handle(struct rtgui_object * object,struct rtgui_event * event)
{
	switch(event->type)
	{
	case RTGUI_EVENT_PAINT:
		rt_kprintf("RTGUI_EVENT_PAINT
");
		rtgui_win_event_handler((struct rtgui_object*)object, event);
		dc_draw(object);

return 0;
	default:
		rt_kprintf("other type <%d>
", object->type);
	}

return rtgui_win_event_handler(object,event);
}

static void win_thread_entry(void* parameter)
{
	struct rtgui_app* app;
	struct rtgui_win *win;
	struct rtgui_rect rect;

app = rtgui_app_create(rt_thread_self(), "MyApp");
	RT_ASSERT(app != RT_NULL);

/* create a full screen window */
	rtgui_graphic_driver_get_rect(rtgui_graphic_driver_get_default(), &rect);
	win = rtgui_win_create(RT_NULL, "MainWin", &rect,
		RTGUI_WIN_STYLE_NO_BORDER | RTGUI_WIN_STYLE_NO_TITLE);
	if (win == RT_NULL)
	{
		rtgui_app_destroy(app);
		return;
	}

/* 加载外部字体 */
	rtgui_font_system_add_font(&rtgui_font_hz24);

/* 绑定消息处理函数 */
	rtgui_object_set_event_handler(RTGUI_OBJECT(win), event_handle);

/* 显示主窗口 */
	rtgui_win_show(win, RT_FALSE);

/* 循环 */
	rtgui_app_run(app);

_err:
	rtgui_win_destroy(win);
	rtgui_app_destroy(app);
	rt_kprintf("MyApp Quit.
");
}

int gui5()
{
	rt_thread_t tid;

tid = rt_thread_create("win", win_thread_entry, RT_NULL, 
		2048, 20, 20);
	if (tid != RT_NULL)
	{
		rt_thread_startup(tid);
	}

return 0;
}
#include <finsh.h>
FINSH_FUNCTION_EXPORT(gui5, gui run)

```

在simulator测试效果如下所示