A39模拟器

MXC-A39/lvgl/examples/widgets/spinbox/index.rst

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+C
+^
+
+Simple Spinbox 
+"""""""""""""""""""""""
+
+.. lv_example:: widgets/spinbox/lv_example_spinbox_1
+  :language: c
+
+MicroPython
+^^^^^^^^^^^
+
+No examples yet.

MXC-A39/lvgl/examples/widgets/spinbox/lv_example_spinbox_1.c

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+#include "../../lv_examples.h"
+#if LV_USE_SPINBOX && LV_BUILD_EXAMPLES
+
+static lv_obj_t * spinbox;
+
+
+static void lv_spinbox_increment_event_cb(lv_event_t * e)
+{
+    lv_event_code_t code = lv_event_get_code(e);
+    if(code == LV_EVENT_SHORT_CLICKED || code  == LV_EVENT_LONG_PRESSED_REPEAT) {
+        lv_spinbox_increment(spinbox);
+    }
+}
+
+static void lv_spinbox_decrement_event_cb(lv_event_t * e)
+{
+    lv_event_code_t code = lv_event_get_code(e);
+    if(code == LV_EVENT_SHORT_CLICKED || code == LV_EVENT_LONG_PRESSED_REPEAT) {
+        lv_spinbox_decrement(spinbox);
+    }
+}
+
+
+void lv_example_spinbox_1(void)
+{
+    spinbox = lv_spinbox_create(lv_scr_act());
+    lv_spinbox_set_range(spinbox, -1000, 25000);
+    lv_spinbox_set_digit_format(spinbox, 5, 2);
+    lv_spinbox_step_prev(spinbox);
+    lv_obj_set_width(spinbox, 100);
+    lv_obj_center(spinbox);
+
+    lv_coord_t h = lv_obj_get_height(spinbox);
+
+    lv_obj_t * btn = lv_btn_create(lv_scr_act());
+    lv_obj_set_size(btn, h, h);
+    lv_obj_align_to(btn, spinbox, LV_ALIGN_OUT_RIGHT_MID, 5, 0);
+    lv_obj_set_style_bg_img_src(btn, LV_SYMBOL_PLUS, 0);
+    lv_obj_add_event_cb(btn, lv_spinbox_increment_event_cb, LV_EVENT_ALL,  NULL);
+
+    btn = lv_btn_create(lv_scr_act());
+    lv_obj_set_size(btn, h, h);
+    lv_obj_align_to(btn, spinbox, LV_ALIGN_OUT_LEFT_MID, -5, 0);
+    lv_obj_set_style_bg_img_src(btn, LV_SYMBOL_MINUS, 0);
+    lv_obj_add_event_cb(btn, lv_spinbox_decrement_event_cb, LV_EVENT_ALL, NULL);
+}
+
+#endif

MXC-A39/lvgl/examples/widgets/spinbox/lv_example_spinbox_1.py

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+def event_handler(obj, event):
+    if event == lv.EVENT.VALUE_CHANGED:
+        print("Value: %d" % obj.get_value())
+    elif event == lv.EVENT.CLICKED:
+        # For simple test: Click the spinbox to increment its value
+        obj.increment()
+
+spinbox = lv.spinbox(lv.scr_act())
+spinbox.set_digit_format(5, 3)
+spinbox.step_prev()
+spinbox.set_width(100)
+spinbox.align(None, lv.ALIGN.CENTER, 0, 0)
+spinbox.set_event_cb(event_handler)