#
# Copyright (c) 2018 Jan Van Winkel <jan.van_winkel@dxplore.eu>
#
# SPDX-License-Identifier: Apache-2.0
#

config LVGL
	bool "LittlevGL Support"
	help
	  This option enables the LittlevGL GUI library.

if LVGL

module = LVGL
module-str = lvgl
source "subsys/logging/Kconfig.template.log_config"

config LVGL_DISPLAY_DEV_NAME
	string "Display device name"
	default "DISPLAY"
	help
	  Name of the display device to use for rendering.

config LVGL_HOR_RES
	int "Horizontal Screen Resolution"
	default 320
	help
	  Horizontal screen resolution in pixels

config LVGL_VER_RES
	int "Vertical Screen Resolution"
	default 240
	help
	  Vertical screen resolution in pixels

config LVGL_DPI
	int "DPI"
	default 100
	help
	  Dots per inch (DPI)

choice LVGL_COLOR_DEPTH
	prompt "Color Depth"
	default LVGL_COLOR_DEPTH_32
	help
	  Color depth to be used by library

	config LVGL_COLOR_DEPTH_32
		bool "32-bit"

	config LVGL_COLOR_DEPTH_16
		bool "16-bit"

	config LVGL_COLOR_DEPTH_8
		bool "8-bit"

	config LVGL_COLOR_DEPTH_1
		bool "1-bit"

endchoice

config LVGL_BITS_PER_PIXEL
	int "Bits per pixel"
	default 0
	help
	  Number of bits per pixel, in case the number of pixels should be derived
	  from the color depth set the number of pixels to zero.

if LVGL_COLOR_DEPTH_16

config LVGL_COLOR_16_SWAP
	bool "RGB565 byte swap"
	help
	  Swap the 2 bytes of a RGB565 pixel.

endif

if LVGL_COLOR_DEPTH_32

config LVGL_COLOR_SCREEN_TRANSP
	bool "Transparency support"
	help
	  Enable screen transparency. Useful for OSD or other overlapping GUISs.

endif

choice
	prompt "Chroma key color"
	default LVGL_CHROMA_KEY_GREEN
	help
	  Color to to use as chroma key

	config LVGL_CHROMA_KEY_RED
		bool "Red"

	config LVGL_CHROMA_KEY_GREEN
		bool "Green"

	config LVGL_CHROMA_KEY_BLUE
		bool "Blue"

	config LVGL_CHROMA_KEY_CUSTOM
		bool "Custom"

endchoice

if LVGL_CHROMA_KEY_CUSTOM
config LVGL_CUSTOM_CHROMA_KEY_RED
	hex "Chroma Key Red"
	range 0x00 0xFF
	default 0x00
	help
	  Value of the color red to be used in the chroma key

config LVGL_CUSTOM_CHROMA_KEY_GREEN
	hex "Chroma Key Green"
	range 0x00 0xFF
	default 0xFF
	help
	  Value of the color green to be used in the chroma key

config LVGL_CUSTOM_CHROMA_KEY_BLUE
	hex "Chroma Key Blue"
	range 0x00 0xFF
	default 0x00
	help
	  Value of the color blue to be used in the chroma key

endif

choice
	prompt "Memory pool"
	default LVGL_MEM_POOL_HEAP_KERNEL
	help
	  Memory pool to use for lvgl allocated objects

	config LVGL_MEM_POOL_HEAP_KERNEL
		bool "Kernel Heap"
		depends on HEAP_MEM_POOL_SIZE != 0
		help
		  Use k_malloc and k_free to allocate objects on the kernel heap

	config LVGL_MEM_POOL_HEAP_LIB_C
	  bool "C library Heap"
	  depends on NEWLIB_LIBC || (MINIMAL_LIBC_MALLOC_ARENA_SIZE != 0)
	  help
		Use C library malloc and free to allocate objects on the C library heap

	config LVGL_MEM_POOL_KERNEL
		bool "Kernel space lvgl pool"
		help
		  Use a dedicated memory pool in kernel space to allocate lvgl objects
		  on

	config LVGL_MEM_POOL_USER
		bool "User space lvgl pool"
		help
		  Use a dedicated memory pool in user space to allocate lvgl objects on

endchoice

if LVGL_MEM_POOL_KERNEL || LVGL_MEM_POOL_USER

config LVGL_MEM_POOL_MIN_SIZE
	int "Minimum memory pool block size"
	default 16
	help
	  Size of the smallest block in the memory pool in bytes

config LVGL_MEM_POOL_MAX_SIZE
	int "Maximum memory pool block size"
	default 2048
	help
	  Size of the largest block in the memory pool in bytes

config LVGL_MEM_POOL_NUMBER_BLOCKS
	int "Number of max size blocks in memory pool"
	default 1
	help
	  Number of maximum sized blocks in the memory pool.

endif

if !LVGL_TRUE_DOUBLE_BUFFERED
config LVGL_VDB_SIZE
	int "Virtual Display Buffer Size"
	default 10
	range 1 100
	help
	  Virtual Display Buffer (double buffering) size as a percentage of
	  total display size.
endif

config LVGL_VDB_STATIC
	bool "Statically allocate virtual display buffer"
	default y
	help
	  Statically allocate virtual display buffer. If disabled pointer should be
	  passed via lv_vdb_set_adr().

config LVGL_DOUBLE_VDB
	bool "Use 2 Virtual Display Buffers"
	help
	  Use 2 virtual display buffers to render and flush data in parallel

if LVGL_DOUBLE_VDB
config LVGL_TRUE_DOUBLE_BUFFERED
	bool "True double buffered"
	help
	  Use true double buffering, VDB size will be set to 100%.
endif

config LVGL_SCREEN_REFRESH_PERIOD
	int "Screen refresh period"
	default 50
	help
	  Screen refresh period in milliseconds

config LVGL_INPUT_REFRESH_PERIOD
	int "Input device refresh period"
	default 50
	help
	  Refresh period for input devices in milliseconds

config LVGL_INPUT_MARK_PRESSED_POINTS
	bool "Mark pressed points"
	depends on LVGL_DIRECT_DRAW
	help
	  Mark the pressed points on the screen.

config LVGL_INPUT_DRAG_THRESHOLD
	int "Drag Threshold"
	default 10
	help
	  Threshold in pixels before entering drag mode

config LVGL_INPUT_DRAG_THROW_SLOW_DOWN
	int "Drag throw slow-down"
	default 20
	range 0 100
	help
	  Percentage of slow down of a throw following a drag.
	  Greater percentage means faster slow-down.

config LVGL_INPUT_LONG_PRESS_TIME
	int "Long press time"
	default 400
	help
	  Period in milliseconds before a press is seen as a long press

config LVGL_INPUT_LONG_RESS_REPEAT_TIME
	int "Long press repeat time"
	default 100
	help
	  Period in milliseconds after which a new trigger is generated
	  for a long press

config LVGL_UTF_8
	bool "Enable UTF-8 support"
	default y
	help
	  Enable UTF-8 support

config LVGL_TEXT_BREAK_CHARACTERS
	string "Text break characters"
	default " ,.;:-_"
	help
	  Characters on which a text break can take place

config LVGL_TEXT_BREAK_LONG_WORD_SIZE
	int "Long word size for text break"
	default 12
	help
	  Number of characters in a word before considering a word for a text break

config LVGL_TEXT_BREAK_LONG_WORD_PRE_MIN_LEN
	int "Minimum long word length before text break"
	default 3
	help
	  Minimum number of characters of a long word that should be put before a
	  break

config LVGL_TEXT_BREAK_LONG_WORD_POST_MIN_LEN
	int "Minimum long word length after text break"
	default 1
	help
	  Minimum number of characters of a long word that should be placed after a
	  break

config LVGL_ANTIALIAS
	bool "Enable anti-aliasing"
	default y
	help
	  Enable anti-aliasing

config LVGL_ANIMATION
	bool "Enable animations"
	default y
	help
	  Enable animations

config LVGL_SHADOW
	bool "Enable shadows"
	default y
	help
	  Enable shadows

config LVGL_GROUP
	bool "Enable group support"
	default y
	help
	  Enable group support.
	  Used by keyboard and button input

config LVGL_GPU
	bool "Enable GPU support"
	help
	  Enable GPU support

config LVGL_DIRECT_DRAW
	bool "Enable direct draw"
	default y
	help
	  Enable direct draw support.
	  Direct draw bypasses virtual display buffer and directly writes to
	  frame buffer

config LVGL_FILESYSTEM
	bool "Enable file system"
	depends on FILE_SYSTEM
	default y if FILE_SYSTEM
	help
	  Enable LittlevGL file system

config LVGL_MULTI_LANGUAGE
	bool "Multi language support"
	help
	  Enable multi language support

if LVGL_MULTI_LANGUAGE
config LVGL_NBR_OF_LANGUAGES
	int "Number of languages"
	default 1
	help
	  Number of languages to support
endif

config LVGL_VLA_SUPPORT
	bool "Enable variable length array support"
	default y
	help
	  Enable variable length array support

config LVGL_COMPILER_NON_CONST_INIT_SUPPORTED
	bool "Enable non constant init"
	default y
	help
	  Indicate if initialization with non constant values is supported

rsource "Kconfig.themes"

rsource "Kconfig.fonts"

rsource "Kconfig.objects"

config APP_LINK_WITH_LVGL
	bool "Link 'app' with LVGL"
	default y
	help
	  Add LVGL header files to the 'app' include path. It may be
	  disabled if the include paths for LVGL are causing aliasing
	  issues for 'app'.

endif # LVGL