libs/m5ui: Add M5Dropdown support.

Signed-off-by: lbuque <[email protected]>

Author: lbuque

docs/en/m5ui/dropdown.rst

@@ -39,6 +39,7 @@ Classes
     calendar.rst
     canvas.rst
     checkbox.rst
+    dropdown.rst
     image.rst
     keyboard.rst
     label.rst

docs/en/m5ui/index.rst

@@ -0,0 +1,38 @@
+.. |cores3_dropdown_directions_example.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/cores3_dropdown_directions_example.png
+
+.. |add_option.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/add_option.png
+.. |align_to.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/align_to.png
+.. |clear_options.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/clear_options.png
+.. |event.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/event.png
+.. |get_height.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/get_height.png
+.. |get_option_count.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/get_option_count.png
+.. |get_option_index.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/get_option_index.png
+.. |get_options.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/get_options.png
+.. |get_selected.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/get_selected.png
+.. |get_selected_str.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/get_selected_str.png
+.. |get_text.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/get_text.png
+.. |get_width.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/get_width.png
+.. |set_default_size.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_default_size.png
+.. |set_dir.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_dir.png
+.. |set_flag.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_flag.png
+.. |set_height.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_height.png
+.. |set_options.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_options.png
+.. |set_pos.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_pos.png
+.. |set_selected_highlight.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_selected_highlight.png
+.. |set_size.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_size.png
+.. |set_state.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_state.png
+.. |set_text.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_text.png
+.. |set_width.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_width.png
+.. |set_x.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_x.png
+.. |set_y.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/set_y.png
+.. |toggle_flag.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/toggle_flag.png
+.. |toggle_state.png| image:: https://static-cdn.m5stack.com/mpy_docs/m5ui/dropdown/toggle_state.png
+
+.. |cores3_dropdown_directions_example.m5f2| raw:: html
+
+    <a
+        href="https://uiflow2.m5stack.com/?example=https://raw.githubusercontent.com/m5stack/uiflow-micropython/develop/examples/m5ui/dropdown/cores3_dropdown_directions_example.m5f2"
+        target="_blank"
+    >
+        cores3_dropdown_directions_example.m5f2
+    </a>