feat(libs): add barcode widget (#3778)

Signed-off-by: pengyiqiang <pengyiqiang@xiaomi.com>
Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>

examples/libs/barcode/index.rst

@@ -0,0 +1,6 @@
+Create a Barcode
+"""""""""""""""""""""""""""""""""""""""""""""""
+
+.. lv_example:: libs/barcode/lv_example_barcode_1
+  :language: c
+

examples/libs/barcode/lv_example_barcode.h

@@ -0,0 +1,38 @@
+/**
+ * @file lv_example_barcode.h
+ *
+ */
+
+#ifndef LV_EXAMPLE_BARCODE_H
+#define LV_EXAMPLE_BARCODE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+void lv_example_barcode_1(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_EXAMPLE_BARCODE_H*/

examples/libs/barcode/lv_example_barcode_1.c

@@ -0,0 +1,28 @@
+#include "../../lv_examples.h"
+#if LV_USE_BARCODE && LV_BUILD_EXAMPLES
+
+/**
+ * Create a Barcode
+ */
+void lv_example_barcode_1(void)
+{
+    lv_color_t bg_color = lv_palette_lighten(LV_PALETTE_LIGHT_BLUE, 5);
+    lv_color_t fg_color = lv_palette_darken(LV_PALETTE_BLUE, 4);
+
+    lv_obj_t * barcode = lv_barcode_create(lv_scr_act());
+    lv_obj_set_height(barcode, 50);
+    lv_obj_center(barcode);
+
+    /*Set color*/
+    lv_barcode_set_dark_color(barcode, fg_color);
+    lv_barcode_set_light_color(barcode, bg_color);
+
+    /*Add a border with bg_color*/
+    lv_obj_set_style_border_color(barcode, bg_color, 0);
+    lv_obj_set_style_border_width(barcode, 5, 0);
+
+    /*Set data*/
+    lv_barcode_update(barcode, "https://lvgl.io");
+}
+
+#endif

examples/libs/barcode/lv_example_barcode_1.py

@@ -0,0 +1,21 @@
+#!/opt/bin/lv_micropython -i
+import lvgl as lv
+import display_driver
+
+bg_color = lv.palette_lighten(lv.PALETTE.LIGHT_BLUE, 5)
+fg_color = lv.palette_darken(lv.PALETTE.BLUE, 4)
+
+barcode = lv.barcode(lv.scr_act())
+barcode.set_height(50)
+barcode.center()
+
+# Set color
+barcode.set_dark_color(fg_color)
+barcode.set_light_color(bg_color)
+
+# Add a border with bg_color
+barcode.set_style_border_color(bg_color, 0)
+barcode.set_style_border_width(5, 0)
+
+# Set data
+barcode.update("https://lvgl.io")

examples/libs/lv_example_libs.h

@@ -13,6 +13,7 @@ extern "C" {
 /*********************
  *      INCLUDES
  *********************/
+#include "barcode/lv_example_barcode.h"
 #include "bmp/lv_example_bmp.h"
 #include "ffmpeg/lv_example_ffmpeg.h"
 #include "freetype/lv_example_freetype.h"