init Files

libraries/lvgl/examples/widgets/slider/lv_example_slider_1.c

@@ -0,0 +1,34 @@
+#include "../../lv_examples.h"
+#if LV_USE_SLIDER && LV_BUILD_EXAMPLES
+
+static void slider_event_cb(lv_event_t * e);
+static lv_obj_t * slider_label;
+
+/**
+ * A default slider with a label displaying the current value
+ */
+void lv_example_slider_1(void)
+{
+    /*Create a slider in the center of the display*/
+    lv_obj_t * slider = lv_slider_create(lv_screen_active());
+    lv_obj_center(slider);
+    lv_obj_add_event_cb(slider, slider_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
+
+    lv_obj_set_style_anim_duration(slider, 2000, 0);
+    /*Create a label below the slider*/
+    slider_label = lv_label_create(lv_screen_active());
+    lv_label_set_text(slider_label, "0%");
+
+    lv_obj_align_to(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
+}
+
+static void slider_event_cb(lv_event_t * e)
+{
+    lv_obj_t * slider = lv_event_get_target(e);
+    char buf[8];
+    lv_snprintf(buf, sizeof(buf), "%d%%", (int)lv_slider_get_value(slider));
+    lv_label_set_text(slider_label, buf);
+    lv_obj_align_to(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
+}
+
+#endif