fix(conf): Make LV_COLOR_MIX_ROUND_OFS configurable (#2766)

* fix(config): check macro equal one correctly

1.remove all tabs from lv_conf_internal_gen.py
2.make the generated code align each other

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

* fix(conf): Make LV_COLOR_MIX_ROUND_OFS configurable

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

Kconfig

@@ -48,6 +48,18 @@ menu "LVGL configuration"
                 Requires `LV_COLOR_DEPTH = 32` colors and the screen's `bg_opa` should be set to
                 non LV_OPA_COVER value
 
+        config LV_COLOR_MIX_ROUND_OFS
+            int "Adjust color mix functions rounding"
+            default 128 if !LV_COLOR_DEPTH_32
+            default 0 if LV_COLOR_DEPTH_32
+            range 0 254
+            help
+                0: no adjustment, get the integer part of the result (round down)
+                64: round up from x.75
+                128: round up from half
+                192: round up from x.25
+                254: round up
+
         config LV_COLOR_CHROMA_KEY_HEX
             hex "Images pixels with this color will not be drawn (if they are chroma keyed)."
             range 0x000000 0xFFFFFF

lv_conf_template.h

@@ -34,6 +34,10 @@
  *Requires `LV_COLOR_DEPTH = 32` colors and the screen's `bg_opa` should be set to non LV_OPA_COVER value*/
 #define LV_COLOR_SCREEN_TRANSP 0
 
+/* Adjust color mix functions rounding. GPUs might calculate color mix (blending) differently.
+ * 0: round down, 64: round up from x.75, 128: round up from half, 192: round up from x.25, 254: round up */
+#define LV_COLOR_MIX_ROUND_OFS (LV_COLOR_DEPTH == 32 ? 0: 128)
+
 /*Images pixels with this color will not be drawn if they are chroma keyed)*/
 #define LV_COLOR_CHROMA_KEY lv_color_hex(0x00ff00)         /*pure green*/
 

scripts/lv_conf_internal_gen.py

@@ -88,11 +88,11 @@ for line in fin.read().splitlines():
     name = r[1]
     name = re.sub('\(.*?\)', '', name, 1)    #remove parentheses from macros. E.g. MY_FUNC(5) -> MY_FUNC
 
-    name_and_value = re.sub('.*# *define', '', line, 1)
+    name_and_value = re.sub('[\s]*#[\s]*define', '', line, 1)
 
     #If the value should be 1 (enabled) by default use a more complex structure for Kconfig checks because
     #if a not defined CONFIG_... value should be interpreted as 0 and not the LVGL default
-    is_one = re.search(r'.*#.*define +[A-Z0-9_]+ +1[^0-9]*', line)
+    is_one = re.search(r'[\s]*#[\s]*define[\s]*[A-Z0-9_]+[\s]+1[\s]*$', line)
     if(is_one):
       #1. Use the value if already set from lv_conf.h or anything else (i.e. do nothing)
       #2. In Kconfig environment use the CONFIG_... value if set, else use 0

src/lv_conf_internal.h

@@ -58,13 +58,9 @@
 
 /*Color depth: 1 (1 byte per pixel), 8 (RGB332), 16 (RGB565), 32 (ARGB8888)*/
 #ifndef LV_COLOR_DEPTH
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_COLOR_DEPTH
 #    define LV_COLOR_DEPTH CONFIG_LV_COLOR_DEPTH
 #  else
-#      define LV_COLOR_DEPTH 0
-#    endif
-#  else
 #    define LV_COLOR_DEPTH 16
 #  endif
 #endif
@@ -89,6 +85,16 @@
 #  endif
 #endif
 
+/* Adjust color mix functions rounding. GPUs might calculate color mix (blending) differently.
+ * 0: round down, 64: round up from x.75, 128: round up from half, 192: round up from x.25, 254: round up */
+#ifndef LV_COLOR_MIX_ROUND_OFS
+#  ifdef CONFIG_LV_COLOR_MIX_ROUND_OFS
+#    define LV_COLOR_MIX_ROUND_OFS CONFIG_LV_COLOR_MIX_ROUND_OFS
+#  else
+#    define LV_COLOR_MIX_ROUND_OFS (LV_COLOR_DEPTH == 32 ? 0: 128)
+#  endif
+#endif
+
 /*Images pixels with this color will not be drawn if they are chroma keyed)*/
 #ifndef LV_COLOR_CHROMA_KEY
 #  ifdef CONFIG_LV_COLOR_CHROMA_KEY
@@ -168,13 +174,9 @@
 /*Number of the intermediate memory buffer used during rendering and other internal processing mechanisms.
  *You will see an error log message if there wasn't enough buffers. */
 #ifndef LV_MEM_BUF_MAX_NUM
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_MEM_BUF_MAX_NUM
 #    define LV_MEM_BUF_MAX_NUM CONFIG_LV_MEM_BUF_MAX_NUM
 #  else
-#      define LV_MEM_BUF_MAX_NUM 0
-#    endif
-#  else
 #    define LV_MEM_BUF_MAX_NUM 16
 #  endif
 #endif
@@ -239,13 +241,9 @@
 /*Default Dot Per Inch. Used to initialize default sizes such as widgets sized, style paddings.
  *(Not so important, you can adjust it to modify default sizes and spaces)*/
 #ifndef LV_DPI_DEF
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_DPI_DEF
 #    define LV_DPI_DEF CONFIG_LV_DPI_DEF
 #  else
-#      define LV_DPI_DEF 0
-#    endif
-#  else
 #    define LV_DPI_DEF 130     /*[px/inch]*/
 #  endif
 #endif
@@ -541,24 +539,16 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 /*Enable asserts if an operation is failed or an invalid data is found.
  *If LV_USE_LOG is enabled an error message will be printed on failure*/
 #ifndef LV_USE_ASSERT_NULL
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_USE_ASSERT_NULL
 #    define LV_USE_ASSERT_NULL CONFIG_LV_USE_ASSERT_NULL
 #  else
-#      define LV_USE_ASSERT_NULL 0
-#    endif
-#  else
 #    define LV_USE_ASSERT_NULL          1   /*Check if the parameter is NULL. (Very fast, recommended)*/
 #  endif
 #endif
 #ifndef LV_USE_ASSERT_MALLOC
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_USE_ASSERT_MALLOC
 #    define LV_USE_ASSERT_MALLOC CONFIG_LV_USE_ASSERT_MALLOC
 #  else
-#      define LV_USE_ASSERT_MALLOC 0
-#    endif
-#  else
 #    define LV_USE_ASSERT_MALLOC        1   /*Checks is the memory is successfully allocated or no. (Very fast, recommended)*/
 #  endif
 #endif
@@ -1293,25 +1283,17 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 #endif
 
 #ifndef LV_USE_DROPDOWN
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_USE_DROPDOWN
 #    define LV_USE_DROPDOWN CONFIG_LV_USE_DROPDOWN
 #  else
-#      define LV_USE_DROPDOWN 0
-#    endif
-#  else
 #    define LV_USE_DROPDOWN   1   /*Requires: lv_label*/
 #  endif
 #endif
 
 #ifndef LV_USE_IMG
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_USE_IMG
 #    define LV_USE_IMG CONFIG_LV_USE_IMG
 #  else
-#      define LV_USE_IMG 0
-#    endif
-#  else
 #    define LV_USE_IMG        1   /*Requires: lv_label*/
 #  endif
 #endif
@@ -1329,24 +1311,16 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 #endif
 #if LV_USE_LABEL
 #ifndef LV_LABEL_TEXT_SELECTION
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_LABEL_TEXT_SELECTION
 #    define LV_LABEL_TEXT_SELECTION CONFIG_LV_LABEL_TEXT_SELECTION
 #  else
-#      define LV_LABEL_TEXT_SELECTION 0
-#    endif
-#  else
 #    define LV_LABEL_TEXT_SELECTION 1 /*Enable selecting text of the label*/
 #  endif
 #endif
 #ifndef LV_LABEL_LONG_TXT_HINT
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_LABEL_LONG_TXT_HINT
 #    define LV_LABEL_LONG_TXT_HINT CONFIG_LV_LABEL_LONG_TXT_HINT
 #  else
-#      define LV_LABEL_LONG_TXT_HINT 0
-#    endif
-#  else
 #    define LV_LABEL_LONG_TXT_HINT 1  /*Store some extra info in labels to speed up drawing of very long texts*/
 #  endif
 #endif
@@ -1365,13 +1339,9 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 #endif
 
 #ifndef LV_USE_ROLLER
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_USE_ROLLER
 #    define LV_USE_ROLLER CONFIG_LV_USE_ROLLER
 #  else
-#      define LV_USE_ROLLER 0
-#    endif
-#  else
 #    define LV_USE_ROLLER     1   /*Requires: lv_label*/
 #  endif
 #endif
@@ -1386,13 +1356,9 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 #endif
 
 #ifndef LV_USE_SLIDER
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_USE_SLIDER
 #    define LV_USE_SLIDER CONFIG_LV_USE_SLIDER
 #  else
-#      define LV_USE_SLIDER 0
-#    endif
-#  else
 #    define LV_USE_SLIDER     1   /*Requires: lv_bar*/
 #  endif
 #endif
@@ -1410,25 +1376,17 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 #endif
 
 #ifndef LV_USE_TEXTAREA
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_USE_TEXTAREA
 #    define LV_USE_TEXTAREA CONFIG_LV_USE_TEXTAREA
 #  else
-#      define LV_USE_TEXTAREA 0
-#    endif
-#  else
 #    define LV_USE_TEXTAREA   1   /*Requires: lv_label*/
 #  endif
 #endif
 #if LV_USE_TEXTAREA != 0
 #ifndef LV_TEXTAREA_DEF_PWD_SHOW_TIME
-#  ifdef _LV_KCONFIG_PRESENT
 #  ifdef CONFIG_LV_TEXTAREA_DEF_PWD_SHOW_TIME
 #    define LV_TEXTAREA_DEF_PWD_SHOW_TIME CONFIG_LV_TEXTAREA_DEF_PWD_SHOW_TIME
 #  else
-#      define LV_TEXTAREA_DEF_PWD_SHOW_TIME 0
-#    endif
-#  else
 #    define LV_TEXTAREA_DEF_PWD_SHOW_TIME 1500    /*ms*/
 #  endif
 #endif

src/misc/lv_color.h

@@ -73,23 +73,6 @@ enum {
 #error "Invalid LV_COLOR_DEPTH in lv_conf.h! Set it to 1, 8, 16 or 32!"
 #endif
 
-/**
- * Adjust color mix functions rounding.
- * GPUs might calculate color mix (blending) differently.
- * Should be in range of 0..254
- * 0: no adjustment, get the integer part of the result (round down)
- * 64: round up from x.75
- * 128: round up from half
- * 192: round up from x.25
- * 254: round up*/
-#ifndef LV_COLOR_MIX_ROUND_OFS
-#if LV_COLOR_DEPTH == 32
-#define LV_COLOR_MIX_ROUND_OFS 0
-#else
-#define LV_COLOR_MIX_ROUND_OFS 128
-#endif
-#endif
-
 #if defined(__cplusplus) && !defined(_LV_COLOR_HAS_MODERN_CPP)
 /**
 * MSVC compiler's definition of the __cplusplus indicating 199711L regardless to C++ standard version