lvgl-rs/examples/demo/include/lv_conf.h

#ifndef LV_CONF_H
#define LV_CONF_H
/* clang-format off */

#include <stdint.h>

/*====================
   Graphical settings
 *====================*/

/* Maximal horizontal and vertical resolution to support by the library.*/
#define LV_HOR_RES_MAX          (240)
#define LV_VER_RES_MAX          (240)

/* Color depth:
 * - 1:  1 byte per pixel
 * - 8:  RGB233
 * - 16: RGB565
 * - 32: ARGB8888
 */
#define LV_COLOR_DEPTH     32

/* Swap the 2 bytes of RGB565 color.
 * Useful if the display has a 8 bit interface (e.g. SPI)*/
#define LV_COLOR_16_SWAP   0

/* 1: Enable screen transparency.
 * Useful for OSD or other overlapping GUIs.
 * Requires `LV_COLOR_DEPTH = 32` colors and the screen's style should be modified: `style.body.opa = ...`*/
#define LV_COLOR_SCREEN_TRANSP    0

/*Images pixels with this color will not be drawn (with chroma keying)*/
#define LV_COLOR_TRANSP    LV_COLOR_LIME         /*LV_COLOR_LIME: pure green*/

/* Enable chroma keying for indexed images. */
#define LV_INDEXED_CHROMA    1

/* Enable anti-aliasing (lines, and radiuses will be smoothed) */
#define LV_ANTIALIAS        1

/* Default display refresh period.
 * Can be changed in the display driver (`lv_disp_drv_t`).*/
#define LV_DISP_DEF_REFR_PERIOD      30      /*[ms]*/

/* Dot Per Inch: used to initialize default sizes.
 * E.g. a button with width = LV_DPI / 2 -> half inch wide
 * (Not so important, you can adjust it to modify default sizes and spaces)*/
#define LV_DPI              298     /*[px]*/

/* Type of coordinates. Should be `int16_t` (or `int32_t` for extreme cases) */
typedef int16_t lv_coord_t;

/*=========================
   Memory manager settings
 *=========================*/

/* LittelvGL's internal memory manager's settings.
 * The graphical objects and other related data are stored here. */

/* 1: use custom malloc/free, 0: use the built-in `lv_mem_alloc` and `lv_mem_free` */
#define LV_MEM_CUSTOM      0
#if LV_MEM_CUSTOM == 0
/* Size of the memory used by `lv_mem_alloc` in bytes (>= 2kB)*/
#  define LV_MEM_SIZE    (4U * 1024U)

/* Complier prefix for a big array declaration */
#  define LV_MEM_ATTR

/* Set an address for the memory pool instead of allocating it as an array.
 * Can be in external SRAM too. */
#  define LV_MEM_ADR          0

/* Automatically defrag. on free. Defrag. means joining the adjacent free cells. */
#  define LV_MEM_AUTO_DEFRAG  1
#else       /*LV_MEM_CUSTOM*/
#  define LV_MEM_CUSTOM_INCLUDE <stdlib.h>   /*Header for the dynamic memory function*/
#  define LV_MEM_CUSTOM_ALLOC   malloc       /*Wrapper to malloc*/
#  define LV_MEM_CUSTOM_FREE    free         /*Wrapper to free*/
#endif     /*LV_MEM_CUSTOM*/

/* Garbage Collector settings
 * Used if lvgl is binded to higher level language and the memory is managed by that language */
#define LV_ENABLE_GC 0
#if LV_ENABLE_GC != 0
#  define LV_GC_INCLUDE "gc.h"                           /*Include Garbage Collector related things*/
#  define LV_MEM_CUSTOM_REALLOC   your_realloc           /*Wrapper to realloc*/
#  define LV_MEM_CUSTOM_GET_SIZE  your_mem_get_size      /*Wrapper to lv_mem_get_size*/
#endif /* LV_ENABLE_GC */

/*=======================
   Input device settings
 *=======================*/

/* Input device default settings.
 * Can be changed in the Input device driver (`lv_indev_drv_t`)*/

/* Input device read period in milliseconds */
#define LV_INDEV_DEF_READ_PERIOD          30

/* Drag threshold in pixels */
#define LV_INDEV_DEF_DRAG_LIMIT           10

/* Drag throw slow-down in [%]. Greater value -> faster slow-down */
#define LV_INDEV_DEF_DRAG_THROW           20

/* Long press time in milliseconds.
 * Time to send `LV_EVENT_LONG_PRESSSED`) */
#define LV_INDEV_DEF_LONG_PRESS_TIME      400

/* Repeated trigger period in long press [ms]
 * Time between `LV_EVENT_LONG_PRESSED_REPEAT */
#define LV_INDEV_DEF_LONG_PRESS_REP_TIME  100

/*==================
 * Feature usage
 *==================*/

/*1: Enable the Animations */
#define LV_USE_ANIMATION        1
#if LV_USE_ANIMATION

/*Declare the type of the user data of animations (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_anim_user_data_t;

#endif

/* 1: Enable shadow drawing*/
#define LV_USE_SHADOW           1

/* 1: Enable object groups (for keyboard/encoder navigation) */
#define LV_USE_GROUP            1
#if LV_USE_GROUP
typedef void * lv_group_user_data_t;
#endif  /*LV_USE_GROUP*/

/* 1: Enable GPU interface*/
#define LV_USE_GPU              0

/* 1: Enable file system (might be required for images */
#define LV_USE_FILESYSTEM       0
#if LV_USE_FILESYSTEM
/*Declare the type of the user data of file system drivers (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_fs_drv_user_data_t;
#endif

/*1: Add a `user_data` to drivers and objects*/
#define LV_USE_USER_DATA        1

/*========================
 * Image decoder and cache
 *========================*/

/* 1: Enable indexed (palette) images */
#define LV_IMG_CF_INDEXED       1

/* 1: Enable alpha indexed images */
#define LV_IMG_CF_ALPHA         1

/* Default image cache size. Image caching keeps the images opened.
 * If only the built-in image formats are used there is no real advantage of caching.
 * (I.e. no new image decoder is added)
 * With complex image decoders (e.g. PNG or JPG) caching can save the continuous open/decode of images.
 * However the opened images might consume additional RAM.
 * LV_IMG_CACHE_DEF_SIZE must be >= 1 */
#define LV_IMG_CACHE_DEF_SIZE       1

/*Declare the type of the user data of image decoder (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_img_decoder_user_data_t;

/*=====================
 *  Compiler settings
 *====================*/
/* Define a custom attribute to `lv_tick_inc` function */
#define LV_ATTRIBUTE_TICK_INC

/* Define a custom attribute to `lv_task_handler` function */
#define LV_ATTRIBUTE_TASK_HANDLER

/* With size optimization (-Os) the compiler might not align data to
 * 4 or 8 byte boundary. This alignment will be explicitly applied where needed.
 * E.g. __attribute__((aligned(4))) */
#define LV_ATTRIBUTE_MEM_ALIGN

/* Attribute to mark large constant arrays for example
 * font's bitmaps */
#define LV_ATTRIBUTE_LARGE_CONST

/* Export integer constant to binding.
 * This macro is used with constants in the form of LV_<CONST> that
 * should also appear on lvgl binding API such as Micropython
 *
 * The default value just prevents a GCC warning.
 */
#define LV_EXPORT_CONST_INT(int_value) struct _silence_gcc_warning

/*===================
 *  HAL settings
 *==================*/

/* 1: use a custom tick source.
 * It removes the need to manually update the tick with `lv_tick_inc`) */
#define LV_TICK_CUSTOM     0
#if LV_TICK_CUSTOM == 1
#define LV_TICK_CUSTOM_INCLUDE  "something.h"       /*Header for the sys time function*/
#define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis())     /*Expression evaluating to current systime in ms*/
#endif   /*LV_TICK_CUSTOM*/

typedef void * lv_disp_drv_user_data_t;             /*Type of user data in the display driver*/
typedef void * lv_indev_drv_user_data_t;            /*Type of user data in the input device driver*/

/*================
 * Log settings
 *===============*/

/*1: Enable the log module*/
#define LV_USE_LOG      0
#if LV_USE_LOG
/* How important log should be added:
 * LV_LOG_LEVEL_TRACE       A lot of logs to give detailed information
 * LV_LOG_LEVEL_INFO        Log important events
 * LV_LOG_LEVEL_WARN        Log if something unwanted happened but didn't cause a problem
 * LV_LOG_LEVEL_ERROR       Only critical issue, when the system may fail
 * LV_LOG_LEVEL_NONE        Do not log anything
 */
#  define LV_LOG_LEVEL    LV_LOG_LEVEL_WARN

/* 1: Print the log with 'printf';
 * 0: user need to register a callback with `lv_log_register_print_cb`*/
#  define LV_LOG_PRINTF   0
#endif  /*LV_USE_LOG*/

/*=================
 * Debug settings
 *================*/

/* If Debug is enabled LittelvGL validates the parameters of the functions.
 * If an invalid parameter is found an error log message is printed and
 * the MCU halts at the error. (`LV_USE_LOG` should be enabled)
 * If you are debugging the MCU you can pause
 * the debugger to see exactly where  the issue is.
 *
 * The behavior of asserts can be overwritten by redefining them here.
 * E.g. #define LV_ASSERT_MEM(p)  <my_assert_code>
 */
#define LV_USE_DEBUG        0
#if LV_USE_DEBUG

/*Check if the parameter is NULL. (Quite fast) */
#define LV_USE_ASSERT_NULL      1

/*Checks is the memory is successfully allocated or no. (Quite fast)*/
#define LV_USE_ASSERT_MEM       1

/* Check the strings.
 * Search for NULL, very long strings, invalid characters, and unnatural repetitions. (Slow)
 * If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
#define LV_USE_ASSERT_STR       0

/* Check NULL, the object's type and existence (e.g. not deleted). (Quite slow)
 * If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
#define LV_USE_ASSERT_OBJ       0

/*Check if the styles are properly initialized. (Fast)*/
#define LV_USE_ASSERT_STYLE     1

#endif /*LV_USE_DEBUG*/

/*================
 *  THEME USAGE
 *================*/
#define LV_THEME_LIVE_UPDATE    0   /*1: Allow theme switching at run time. Uses 8..10 kB of RAM*/

#define LV_USE_THEME_TEMPL      0   /*Just for test*/
#define LV_USE_THEME_DEFAULT    0   /*Built mainly from the built-in styles. Consumes very few RAM*/
#define LV_USE_THEME_ALIEN      0   /*Dark futuristic theme*/
#define LV_USE_THEME_NIGHT      0   /*Dark elegant theme*/
#define LV_USE_THEME_MONO       0   /*Mono color theme for monochrome displays*/
#define LV_USE_THEME_MATERIAL   0   /*Flat theme with bold colors and light shadows*/
#define LV_USE_THEME_ZEN        0   /*Peaceful, mainly light theme */
#define LV_USE_THEME_NEMO       0   /*Water-like theme based on the movie "Finding Nemo"*/

/*==================
 *    FONT USAGE
 *===================*/

/* The built-in fonts contains the ASCII range and some Symbols with  4 bit-per-pixel.
 * The symbols are available via `LV_SYMBOL_...` defines
 * More info about fonts: https://docs.littlevgl.com/#Fonts
 * To create a new font go to: https://littlevgl.com/ttf-font-to-c-array
 */

/* Robot fonts with bpp = 4
 * https://fonts.google.com/specimen/Roboto  */
#define LV_FONT_ROBOTO_12    0
#define LV_FONT_ROBOTO_16    0
#define LV_FONT_ROBOTO_22    0
#define LV_FONT_ROBOTO_28    1

/* Demonstrate special features */
#define LV_FONT_ROBOTO_12_SUBPX 1
#define LV_FONT_ROBOTO_28_COMPRESSED 1  /*bpp = 3*/

/*Pixel perfect monospace font
 * http://pelulamu.net/unscii/ */
#define LV_FONT_UNSCII_8     0

/* Optionally declare your custom fonts here.
 * You can use these fonts as default font too
 * and they will be available globally. E.g.
 * #define LV_FONT_CUSTOM_DECLARE LV_FONT_DECLARE(my_font_1) \
 *                                LV_FONT_DECLARE(my_font_2)
 */
#define LV_FONT_CUSTOM_DECLARE

/*Always set a default font from the built-in fonts*/
#define LV_FONT_DEFAULT        &lv_font_roboto_28

/* Enable it if you have fonts with a lot of characters.
 * The limit depends on the font size, font face and bpp
 * but with > 10,000 characters if you see issues probably you need to enable it.*/
#define LV_FONT_FMT_TXT_LARGE   0

/* Set the pixel order of the display.
 * Important only if "subpx fonts" are used.
 * With "normal" font it doesn't matter.
 */
#define LV_FONT_SUBPX_BGR    0

/*Declare the type of the user data of fonts (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_font_user_data_t;

/*=================
 *  Text settings
 *=================*/

/* Select a character encoding for strings.
 * Your IDE or editor should have the same character encoding
 * - LV_TXT_ENC_UTF8
 * - LV_TXT_ENC_ASCII
 * */
#define LV_TXT_ENC LV_TXT_ENC_UTF8

/*Can break (wrap) texts on these chars*/
#define LV_TXT_BREAK_CHARS                  " ,.;:-_"


/* If a word is at least this long, will break wherever "prettiest"
 * To disable, set to a value <= 0 */
#define LV_TXT_LINE_BREAK_LONG_LEN          12

/* Minimum number of characters in a long word to put on a line before a break.
 * Depends on LV_TXT_LINE_BREAK_LONG_LEN. */
#define LV_TXT_LINE_BREAK_LONG_PRE_MIN_LEN  3

/* Minimum number of characters in a long word to put on a line after a break.
 * Depends on LV_TXT_LINE_BREAK_LONG_LEN. */
#define LV_TXT_LINE_BREAK_LONG_POST_MIN_LEN 3

/* The control character to use for signalling text recoloring. */
#define LV_TXT_COLOR_CMD "#"

/* Support bidirectional texts.
 * Allows mixing Left-to-Right and Right-to-Left texts.
 * The direction will be processed according to the Unicode Bidirectioanl Algorithm:
 * https://www.w3.org/International/articles/inline-bidi-markup/uba-basics*/
#define LV_USE_BIDI     0
#if LV_USE_BIDI
/* Set the default direction. Supported values:
 * `LV_BIDI_DIR_LTR` Left-to-Right
 * `LV_BIDI_DIR_RTL` Right-to-Left
 * `LV_BIDI_DIR_AUTO` detect texts base direction */
#define LV_BIDI_BASE_DIR_DEF  LV_BIDI_DIR_AUTO
#endif

/*Change the built in (v)snprintf functions*/
#define LV_SPRINTF_CUSTOM   0
#if LV_SPRINTF_CUSTOM
#  define LV_SPRINTF_INCLUDE <stdio.h>
#  define lv_snprintf     snprintf
#  define lv_vsnprintf    vsnprintf
#endif  /*LV_SPRINTF_CUSTOM*/

/*===================
 *  LV_OBJ SETTINGS
 *==================*/

/*Declare the type of the user data of object (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_obj_user_data_t;

/*1: enable `lv_obj_realaign()` based on `lv_obj_align()` parameters*/
#define LV_USE_OBJ_REALIGN          1

/* Enable to make the object clickable on a larger area.
 * LV_EXT_CLICK_AREA_OFF or 0: Disable this feature
 * LV_EXT_CLICK_AREA_TINY: The extra area can be adjusted horizontally and vertically (0..255 px)
 * LV_EXT_CLICK_AREA_FULL: The extra area can be adjusted in all 4 directions (-32k..+32k px)
 */
#define LV_USE_EXT_CLICK_AREA  LV_EXT_CLICK_AREA_OFF

/*==================
 *  LV OBJ X USAGE
 *================*/
/*
 * Documentation of the object types: https://docs.littlevgl.com/#Object-types
 */

/*Arc (dependencies: -)*/
#define LV_USE_ARC      1

/*Bar (dependencies: -)*/
#define LV_USE_BAR      1

/*Button (dependencies: lv_cont*/
#define LV_USE_BTN      1
#if LV_USE_BTN != 0
/*Enable button-state animations - draw a circle on click (dependencies: LV_USE_ANIMATION)*/
#  define LV_BTN_INK_EFFECT   0
#endif

/*Button matrix (dependencies: -)*/
#define LV_USE_BTNM     1

/*Calendar (dependencies: -)*/
#define LV_USE_CALENDAR 1

/*Canvas (dependencies: lv_img)*/
#define LV_USE_CANVAS   1

/*Check box (dependencies: lv_btn, lv_label)*/
#define LV_USE_CB       1

/*Chart (dependencies: -)*/
#define LV_USE_CHART    1
#if LV_USE_CHART
#  define LV_CHART_AXIS_TICK_LABEL_MAX_LEN    20
#endif

/*Container (dependencies: -*/
#define LV_USE_CONT     1

/*Color picker (dependencies: -*/
#define LV_USE_CPICKER   1

/*Drop down list (dependencies: lv_page, lv_label, lv_symbol_def.h)*/
#define LV_USE_DDLIST    1
#if LV_USE_DDLIST != 0
/*Open and close default animation time [ms] (0: no animation)*/
#  define LV_DDLIST_DEF_ANIM_TIME     200
#endif

/*Gauge (dependencies:lv_bar, lv_lmeter)*/
#define LV_USE_GAUGE    1

/*Image (dependencies: lv_label*/
#define LV_USE_IMG      1

/*Image Button (dependencies: lv_btn*/
#define LV_USE_IMGBTN   1
#if LV_USE_IMGBTN
/*1: The imgbtn requires left, mid and right parts and the width can be set freely*/
#  define LV_IMGBTN_TILED 0
#endif

/*Keyboard (dependencies: lv_btnm)*/
#define LV_USE_KB       1

/*Label (dependencies: -*/
#define LV_USE_LABEL    1
#if LV_USE_LABEL != 0
/*Hor, or ver. scroll speed [px/sec] in 'LV_LABEL_LONG_ROLL/ROLL_CIRC' mode*/
#  define LV_LABEL_DEF_SCROLL_SPEED       25

/* Waiting period at beginning/end of animation cycle */
#  define LV_LABEL_WAIT_CHAR_COUNT        3

/*Enable selecting text of the label */
#  define LV_LABEL_TEXT_SEL               0

/*Store extra some info in labels (12 bytes) to speed up drawing of very long texts*/
#  define LV_LABEL_LONG_TXT_HINT          0
#endif

/*LED (dependencies: -)*/
#define LV_USE_LED      1

/*Line (dependencies: -*/
#define LV_USE_LINE     1

/*List (dependencies: lv_page, lv_btn, lv_label, (lv_img optionally for icons ))*/
#define LV_USE_LIST     1
#if LV_USE_LIST != 0
/*Default animation time of focusing to a list element [ms] (0: no animation)  */
#  define LV_LIST_DEF_ANIM_TIME  100
#endif

/*Line meter (dependencies: *;)*/
#define LV_USE_LMETER   1

/*Message box (dependencies: lv_rect, lv_btnm, lv_label)*/
#define LV_USE_MBOX     1

/*Page (dependencies: lv_cont)*/
#define LV_USE_PAGE     1
#if LV_USE_PAGE != 0
/*Focus default animation time [ms] (0: no animation)*/
#  define LV_PAGE_DEF_ANIM_TIME     400
#endif

/*Preload (dependencies: lv_arc, lv_anim)*/
#define LV_USE_PRELOAD      1
#if LV_USE_PRELOAD != 0
#  define LV_PRELOAD_DEF_ARC_LENGTH   60      /*[deg]*/
#  define LV_PRELOAD_DEF_SPIN_TIME    1000    /*[ms]*/
#  define LV_PRELOAD_DEF_ANIM         LV_PRELOAD_TYPE_SPINNING_ARC
#endif

/*Roller (dependencies: lv_ddlist)*/
#define LV_USE_ROLLER    1
#if LV_USE_ROLLER != 0
/*Focus animation time [ms] (0: no animation)*/
#  define LV_ROLLER_DEF_ANIM_TIME     200

/*Number of extra "pages" when the roller is infinite*/
#  define LV_ROLLER_INF_PAGES         7
#endif

/*Slider (dependencies: lv_bar)*/
#define LV_USE_SLIDER    1

/*Spinbox (dependencies: lv_ta)*/
#define LV_USE_SPINBOX       1

/*Switch (dependencies: lv_slider)*/
#define LV_USE_SW       1

/*Text area (dependencies: lv_label, lv_page)*/
#define LV_USE_TA       1
#if LV_USE_TA != 0
#  define LV_TA_DEF_CURSOR_BLINK_TIME 400     /*ms*/
#  define LV_TA_DEF_PWD_SHOW_TIME     1500    /*ms*/
#endif

/*Table (dependencies: lv_label)*/
#define LV_USE_TABLE    1
#if LV_USE_TABLE
#  define LV_TABLE_COL_MAX    12
#endif

/*Tab (dependencies: lv_page, lv_btnm)*/
#define LV_USE_TABVIEW      1
#  if LV_USE_TABVIEW != 0
/*Time of slide animation [ms] (0: no animation)*/
#  define LV_TABVIEW_DEF_ANIM_TIME    300
#endif

/*Tileview (dependencies: lv_page) */
#define LV_USE_TILEVIEW     1
#if LV_USE_TILEVIEW
/*Time of slide animation [ms] (0: no animation)*/
#  define LV_TILEVIEW_DEF_ANIM_TIME   300
#endif

/*Window (dependencies: lv_cont, lv_btn, lv_label, lv_img, lv_page)*/
#define LV_USE_WIN      1

/*==================
 * Non-user section
 *==================*/

#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)    /* Disable warnings for Visual Studio*/
#  define _CRT_SECURE_NO_WARNINGS
#endif

/*--END OF LV_CONF_H--*/

/*Be sure every define has a default value*/
#include "lvgl/src/lv_conf_checker.h"

#endif /*LV_CONF_H*/