adding micropython examples (#2286)

* adding micropython examples

* adding micropython examples

examples/widgets/label/lv_example_label_1.py

@@ -1,14 +1,19 @@
+#
+# Show line wrap, re-color, line align and text scrolling.
+#
 label1 = lv.label(lv.scr_act())
-label1.set_long_mode(lv.label.LONG.BREAK)     # Break the long lines
+label1.set_long_mode(lv.label.LONG.WRAP);     # Break the long lines*/
 label1.set_recolor(True)                      # Enable re-coloring by commands in the text
-label1.set_align(lv.label.ALIGN.CENTER)       # Center aligned lines
-label1.set_text("#000080 Re-color# #0000ff words# #6666ff of a# label " +
-                "and  wrap long text automatically.")
-label1.set_width(150)
-label1.align(None, lv.ALIGN.CENTER, 0, -30)
+label1.set_text("#0000ff Re-color# #ff00ff words# #ff0000 of a# label, align the lines to the center"
+                              "and  wrap long text automatically.")
+label1.set_width(150)                         # Set smaller width to make the lines wrap
+label1.set_style_text_align(lv.ALIGN.CENTER, 0)
+label1.align(lv.ALIGN.CENTER, 0, -40)
+
 
 label2 = lv.label(lv.scr_act())
-label2.set_long_mode(lv.label.LONG.SROLL_CIRC)     # Circular scroll
+label2.set_long_mode(lv.label.LONG.SCROLL_CIRCULAR) # Circular scroll
 label2.set_width(150)
 label2.set_text("It is a circularly scrolling text. ")
-label2.align(None, lv.ALIGN.CENTER, 0, 30)
+label2.align(lv.ALIGN.CENTER, 0, 40)
+

examples/widgets/label/lv_example_label_2.py

@@ -1,24 +1,30 @@
+#
+# Create a fake text shadow
+#
+
 # Create a style for the shadow
-label_style = lv.style_t()
-lv.style_copy(label_style, lv.style_plain)
-label_style.text.opa = lv.OPA._50
+style_shadow = lv.style_t()
+style_shadow.init()
+style_shadow.set_text_opa(lv.OPA._30)
+style_shadow.set_text_color(lv.color_black())
 
 # Create a label for the shadow first (it's in the background)
 shadow_label = lv.label(lv.scr_act())
-shadow_label.set_style(lv.label.STYLE.MAIN, label_style)
+shadow_label.add_style(style_shadow, 0)
 
 # Create the main label
 main_label = lv.label(lv.scr_act())
-main_label.set_text("A simple method to create\n" +
-                              "shadows on text\n" +
-                              "It even works with\n\n" +
-                              "newlines     and spaces.")
+main_label.set_text("A simple method to create\n"
+                   "shadows on a text.\n"
+                   "It even works with\n\n"
+                   "newlines     and spaces.")
 
 # Set the same text for the shadow label
-shadow_label.set_text(main_label.get_text())
+shadow_label.set_text(lv.label.get_text(main_label))
 
 # Position the main label
-main_label.align(None, lv.ALIGN.CENTER, 0, 0)
+main_label.align(lv.ALIGN.CENTER, 0, 0)
+
+# Shift the second label down and to the right by 2 pixel
+shadow_label.align_to(main_label, lv.ALIGN.TOP_LEFT, 2, 2)
 
-# Shift the second label down and to the right by 1 pixel
-shadow_label.align(main_label, lv.ALIGN.IN_TOP_LEFT, 1, 1)

examples/widgets/label/lv_example_label_3.py

@@ -0,0 +1,36 @@
+import fs_driver
+#
+# Show mixed LTR, RTL and Chinese label
+#
+
+ltr_label = lv.label(lv.scr_act())
+ltr_label.set_text("In modern terminology, a microcontroller is similar to a system on a chip (SoC).");
+# ltr_label.set_style_text_font(ltr_label, &lv_font_montserrat_16, 0);
+
+fs_drv = lv.fs_drv_t()
+fs_driver.fs_register(fs_drv, 'S')
+
+try:
+    ltr_label.set_style_text_font(ltr_label, lv.font_montserrat_16, 0)
+except:
+    font_montserrat_16 = lv.font_load("S:../../assets/font/montserrat-16.bin")
+    ltr_label.set_style_text_font(font_montserrat_16, 0)
+    
+ltr_label.set_width(310)
+ltr_label.align(lv.ALIGN.TOP_LEFT, 5, 5)
+
+rtl_label = lv.label(lv.scr_act())
+rtl_label.set_text("מעבד, או בשמו המלא יחידת עיבוד מרכזית (באנגלית: CPU - Central Processing Unit).")
+rtl_label.set_style_base_dir(lv.BASE_DIR.RTL, 0)
+rtl_label.set_style_text_font(lv.font_dejavu_16_persian_hebrew, 0)
+rtl_label.set_width(310)
+rtl_label.align(lv.ALIGN.LEFT_MID, 5, 0)
+
+font_simsun_16_cjk = lv.font_load("S:../../assets/font/lv_font_simsun_16_cjk.bin")
+
+cz_label = lv.label(lv.scr_act())
+cz_label.set_style_text_font(font_simsun_16_cjk, 0)
+cz_label.set_text("嵌入式系统（Embedded System），\n是一种嵌入机械或电气系统内部、具有专一功能和实时计算性能的计算机系统。")    
+cz_label.set_width(310)
+cz_label.align(lv.ALIGN.BOTTOM_LEFT, 5, -5)
+