rt-thread/examples/gui/demo_view_progressbar.c

#include "demo_view.h"
#include <rtgui/rtgui_system.h>
#include <rtgui/widgets/label.h>
#include <rtgui/widgets/progressbar.h>

static rtgui_progressbar_t *hbar;
static rtgui_progressbar_t *vbar;
static rtgui_timer_t *bar_timer = RT_NULL;

void progressbar_timeout(struct rtgui_timer *timer, void *parameter)
{
    static rt_uint32_t value = 0;

    value++;
    if (value == 100)
        value = 0;

    rtgui_progressbar_set_value(hbar, value);
    rtgui_progressbar_set_value(vbar, value);
}

static rt_bool_t start_timer(struct rtgui_object *object, struct rtgui_event *event)
{
    if (bar_timer != RT_NULL)
        rtgui_timer_start(bar_timer);
    return RT_TRUE;
}

static rt_bool_t stop_timer(struct rtgui_object *object, struct rtgui_event *event)
{
    if (bar_timer != RT_NULL)
        rtgui_timer_stop(bar_timer);
    return RT_TRUE;
}

static rt_bool_t progressbar_event_handler(struct rtgui_object *object, rtgui_event_t *event)
{
    struct rtgui_widget *widget = RTGUI_WIDGET(object);

    if (event->type == RTGUI_EVENT_SHOW)
    {
        rtgui_container_event_handler(object, event);
        start_timer(object, event);
    }
    else if (event->type == RTGUI_EVENT_HIDE)
    {
        rtgui_container_event_handler(object, event);
        stop_timer(object, event);
    }
    else
    {
        /* 调用默认的事件处理函数 */
        return rtgui_progressbar_event_handler(object, event);
    }

    return RT_FALSE;
}

rtgui_container_t *demo_view_progressbar(void)
{
    rtgui_container_t *container;
    rtgui_rect_t rect;
    rtgui_label_t *label;

    /* create a demo container */
    container = demo_view("ProgressBar View");

    /* get demo container rect */
    demo_view_get_rect(container, &rect);
    label = rtgui_label_create("水平进度条:");
    rtgui_container_add_child(container, RTGUI_WIDGET(label));
    rect.x1 += 5;
    rect.x2 -= 5;
    rect.y1 += 5;
    rect.y2 = rect.y1 + 18;
    rtgui_widget_set_rect(RTGUI_WIDGET(label), &rect);
    rect.y1 += 20;
    rect.y2 = rect.y1 + 18;
    hbar = rtgui_progressbar_create(RTGUI_HORIZONTAL, 100, &rect);
    rtgui_container_add_child(container, RTGUI_WIDGET(hbar));

    /* get demo container rect */
    demo_view_get_rect(container, &rect);
    label = rtgui_label_create("垂直进度条:");
    rtgui_container_add_child(container, RTGUI_WIDGET(label));
    rect.x1 += 5;
    rect.x2 -= 5;
    rect.y1 += 45;
    rect.y2 = rect.y1 + 18;
    rtgui_widget_set_rect(RTGUI_WIDGET(label), &rect);
    rect.x1 += 110;
    rect.x2 = rect.x1 + 20;
    rect.y1 += 18 + 5;
    rect.y2 = rect.y1 + 150;
    vbar = rtgui_progressbar_create(RTGUI_VERTICAL, 100, &rect);
    rtgui_container_add_child(container, RTGUI_WIDGET(vbar));

    bar_timer = rtgui_timer_create(50, RT_TIMER_FLAG_PERIODIC,
                                   progressbar_timeout, RT_NULL);

    return container;
}