New release v5.3 - Micropython support, New object types, new features

What has happened since v5.2?

LittlevGL integrations

• Espressif officially supports LittlevGL as a GUI library for ESP32. Read more in this post.
• Zephyr](https://www.zephyrproject.org/), a popular RTOS for IoT, has integrated LittlevGL. Here is getting started example.

Community and Website updates

• Blog LittlevGL’s Blog has been launched. It’s for you to share your projects, tutorials, tips, and tricks. Read here how to add your post.
• Forum Our Forum is opened. Please use it for “how-to” questions and open GitHub issues for development related topics.
• Documentation The documentation is moved to a public repository where you can send pull requests to improve it. The documentation is available Online and Offline.

Some metrics

• LittlevGL is getting more popular. According to the GitHub statistics LittlevGL is cloned in every 10 minutes. (Not counting direct downloaded from littlevgl.com)
• LittlevGL was a Top trending repository of GitHub. It means it was among the top 25 most popular repositories even if compared with all languages not only C.

Micropython support

Thanks to @amirgon, from now you can use LittlevGL with Micropython (a Python implementation for embedded systems). Read more in this post. You can try it on Linux and or with ESP32 using this ready to use repository.

New objects:

• lv_tileview container for smartwatch like designs
• lv_spinbox set numeric value with + and - buttons or keys
• lv_table create lightweight tables
• lv_canvas draw to a buffer and display it as an image

New object features

• lv_obj add realign feature (save the last lv_obj_align data and re-apply)
• lv_obj add lv_obj_align_origo to align the center of the object (work with realign)
• lv_chart LV_CHART_TYPE_VERTICAL_LINE when the point count is equal to the chart width to draw only vertical lines
• lv_chart lv_chart: add LV_CHART_POINT_DEF special value to not draw a point
• lv_sw animated move (lv_sw_set_anim_time(), lv_sw_on/off_anim())
• lv_btnm add lv_btnm_get_pressed()
• lv_btnm add recolor feature with lv_btnm_set_recolor
• lv_ta support LV_GROUP_KEY_BACKSPACE
• lv_ddlist add down arrow symbol option with lv_ddlist_set_draw_arrow
• lv_ddlist add ability to set label alignment
• lv_list remeber the last seleceted button (only if the list is in a group)
• lv_list allow single button selection mode
• lv_list, lv_ta, lv_page scroll propagation feature to scroll the parent on “overscrolling”
• lv_list, lv_ta, lv_page edge flash effect to show circle on the edge on “overscrolling”
• lv_preload add lv_preload_set_animation_type() and LV_PRELOAD_TYPE_FILLSPIN_ARC
• lv_imgbtn add tiled option to set width dynamically by repeating the middle part
• lv_calendar add lv_calendar_get_pressed_date
• lv_tabview add lv_tabview_set_hidden to hidet tab buttons

New other features

• lv_lang multi-langue interface to change UI’s language run-time
• lv_group add LV_GROUP_KEY_BACKSPACE
• lv_anim add overshoot and bounce path
• lv_anim add add lv_anim_count_running
• lv_anim lv_anim: add lv_anim_count_running
• lv_indev add lv_indev_set_feeback to add callback when something happened with an object
• lv_vdb add true double bufferig feature to work woth only frame buffer address swapping
• lv_style add LV_BORDER_INTERNAL to remove the borders on teh edges
• lv_porting add display, indev, file siystem porting skeleton functionú

Plans for v6.0

• Multi-display support
• Run time screen configuration (instead of hard coded defines)
• Generic action handling (lv_obj will have an action)
• Better GPU handling
• Image rotation
• Better internationalization support (i18n)

You can track the progress in this issue

Related posts

• Espressif officially supports LittlevGL on ESP32! Let’s try it!.
• Micropython + LittlevGL