对slider控件的小修改

发布于 2013-08-29 11:24:53 浏览：2761 订阅该版

7 个回答

grissiom 2013-08-29

这家伙很懒，什么也没写！

nongxiaoming 2013-08-31

rt-thread大师兄

fm0826 2013-08-31

这家伙很懒，什么也没写！

刚看了touch.c文件里
void touch_timeout(void* parameter)
{
    static unsigned int touched_down = 0;
    struct rtgui_event_mouse emouse;
    static struct _touch_previous
    {
        rt_uint32_t x;
        rt_uint32_t y;
    } touch_previous;

/* touch time is too short and we lost the position already. */
    if ((!touched_down) && GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_6) != 0)
        return;

if (GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_6) != 0)
    {
        int tmer = RT_TICK_PER_SECOND/8 ;
        EXTI_Enable(1);
        emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
        emouse.button = (RTGUI_MOUSE_BUTTON_LEFT |RTGUI_MOUSE_BUTTON_UP);

/* use old value */
        emouse.x = touch->x;
        emouse.y = touch->y;

/* stop timer */
        rt_timer_stop(touch->poll_timer);
        //rt_kprintf("touch up: (%d, %d)\n", emouse.x, emouse.y);
        touched_down = 0;

if ((touch->calibrating == RT_TRUE) && (touch->calibration_func != RT_NULL))
        {
            /* callback function */
            touch->calibration_func(emouse.x, emouse.y);
        }
        rt_timer_control(touch->poll_timer , RT_TIMER_CTRL_SET_TIME , &tmer);
    }
    else
    {
        if(touched_down == 0)
        {
            int tmer = RT_TICK_PER_SECOND/20 ;
            /* calculation */
            rtgui_touch_calculate();

/* send mouse event */
            emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
            emouse.parent.sender = RT_NULL;

emouse.x = touch->x;
            emouse.y = touch->y;

touch_previous.x = touch->x;
            touch_previous.y = touch->y;

/* init mouse button */
            emouse.button = (RTGUI_MOUSE_BUTTON_LEFT |RTGUI_MOUSE_BUTTON_DOWN);

//rt_kprintf("touch down: (%d, %d)\n", emouse.x, emouse.y);
            touched_down = 1;
            rt_timer_control(touch->poll_timer , RT_TIMER_CTRL_SET_TIME , &tmer);
        }
        else
        {
            /* calculation */
            rtgui_touch_calculate();

#define previous_keep      8
            //?????????à????·?????previous_keep,?????ó??×÷.
            if(
                (touch_previous.x<touch->x+previous_keep)
                && (touch_previous.x>touch->x-previous_keep)
                && (touch_previous.y<touch->y+previous_keep)
                && (touch_previous.y>touch->y-previous_keep)  )
            {
                return;
            }

touch_previous.x = touch->x;
            touch_previous.y = touch->y;

/* send mouse event */
            emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON ;
            emouse.parent.sender = RT_NULL;

emouse.x = touch->x;
            emouse.y = touch->y;

/* init mouse button */
            emouse.button = (RTGUI_MOUSE_BUTTON_RIGHT |RTGUI_MOUSE_BUTTON_DOWN);
            //rt_kprintf("touch motion: (%d, %d)\n", emouse.x, emouse.y);
        }
    }

/* send event to server */
    if (touch->calibrating != RT_TRUE)
        rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
}
函数，我理解的是根据 emouse.button来判断是第一次按下，还是练习按下（滑动）。
有看来realtouch里static void touch_thread_entry(void *parameter)函数，怎么判断是第一次按下还是滑动有点不解。如何是移动一个窗口呢？这样感觉好像不行吧。