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);
}

rtgui_view_t *demo_view_progressbar(rtgui_workbench_t* workbench)
{
	rtgui_view_t *view;
	rtgui_rect_t rect;
	rtgui_label_t *label;
	
	/* create a demo view */
	view = demo_view(workbench);
	
	/* get demo view rect */
	demo_view_get_rect(view, &rect);
	label = rtgui_label_create("horizontal progress bar:");
	rtgui_container_add_child(RTGUI_CONTAINER(view), 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(RTGUI_CONTAINER(view), RTGUI_WIDGET(hbar));

	/* get demo view rect */
	demo_view_get_rect(view, &rect);
	label = rtgui_label_create("vertical progress bar:");
	rtgui_container_add_child(RTGUI_CONTAINER(view), 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(RTGUI_CONTAINER(view), RTGUI_WIDGET(vbar));

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

	return view;
}