Merge branch 'master' into dev

docs/ROADMAP.md

@@ -32,24 +32,26 @@ Planned to September/October 2020
 ## v8.1
 - Add radio button widget
 
-## v9
+## v8.x
-- Simplify `group`s. Discussion is [here](https://forum.lvgl.io/t/lv-group-tabindex/2927/3).
 - Unit testing (gtest?). See [#1658](https://github.com/lvgl/lvgl/issues/1658)
 - Benchmarking (gem5?). See [#1660](https://github.com/lvgl/lvgl/issues/1660)
+
+## v9
+- Simplify `group`s. Discussion is [here](https://forum.lvgl.io/t/lv-group-tabindex/2927/3).
 - Consider direct binary font format support
 - Remove the copy paramter from create functions
 - Style selectors and style-based states See [#1832](https://github.com/lvgl/lvgl/issues/1832)
+- Optimize line and cirle drawing and masking
+- Reconsider color format management for run time color format setting, and custom color format usage. (Also [RGB888](https://github.com/lvgl/lvgl/issues/1722))
+- 9-patch support for `lv_imgbtn`.
 
 ## v10
 - Remove property level states
 
 
 ## Ideas
-- 9-patch support for `lv_imgbtn`.
 - lv_mem_alloc_aligned(size, align)
 - Text node. See [#1701](https://github.com/lvgl/lvgl/issues/1701#issuecomment-699479408)
-- RGB888 support [#1722](https://github.com/lvgl/lvgl/issues/1722)
-- Consider ARGB4444, ARGB1555 format
 - CPP binding. See [Forum](https://forum.lvgl.io/t/is-it-possible-to-officially-support-optional-cpp-api/2736)
 - Optmize font decompression
 - Switch to RGBA colors in styles

src/lv_widgets/lv_btnmatrix.c

@@ -774,7 +774,7 @@ static lv_design_res_t lv_btnmatrix_design(lv_obj_t * btnm, const lv_area_t * cl
             /*Get the size of the Arabic text and process it*/
             size_t len_ap = _lv_txt_ap_calc_bytes_cnt(txt);
             if(len_ap < txt_ap_size) {
-                _lv_txt_ap_proc(txt_ap, txt);
+                _lv_txt_ap_proc(txt, txt_ap);
                 txt = txt_ap;
             }
 #endif