lv_color.h

Defines

LV_COLOR_NATIVE_WITH_ALPHA_SIZE

LV_OPA_MIN: Opacities below this will be transparent

LV_OPA_MAX: Opacities above this will fully cover

LV_COLOR_FORMAT_GET_BPP(cf)

Get the pixel size of a color format in bits, bpp

See also

lv_color_format_get_bpp

Parameters:

cf -- a color format (LV_COLOR_FORMAT_...)

Returns:

the pixel size in bits

LV_COLOR_FORMAT_GET_SIZE(cf)

Get the pixel size of a color format in bytes

See also

lv_color_format_get_size

Parameters:

cf -- a color format (LV_COLOR_FORMAT_...)

Returns:

the pixel size in bytes

LV_COLOR_FORMAT_IS_ALPHA_ONLY(cf)

LV_COLOR_FORMAT_IS_INDEXED(cf)

LV_COLOR_FORMAT_IS_YUV(cf)

LV_COLOR_INDEXED_PALETTE_SIZE(cf)

LV_COLOR_MAKE(r8, g8, b8)

LV_OPA_MIX2(a1, a2)

LV_OPA_MIX3(a1, a2, a3)

Enums

enum [anonymous]

Opacity percentages.

Values:

enumerator LV_OPA_TRANSP

enumerator LV_OPA_0

enumerator LV_OPA_10

enumerator LV_OPA_20

enumerator LV_OPA_30

enumerator LV_OPA_40

enumerator LV_OPA_50

enumerator LV_OPA_60

enumerator LV_OPA_70

enumerator LV_OPA_80

enumerator LV_OPA_90

enumerator LV_OPA_100

enumerator LV_OPA_COVER

enum lv_color_format_t

Values:

enumerator LV_COLOR_FORMAT_UNKNOWN

enumerator LV_COLOR_FORMAT_RAW

enumerator LV_COLOR_FORMAT_RAW_ALPHA

enumerator LV_COLOR_FORMAT_L8

enumerator LV_COLOR_FORMAT_I1

enumerator LV_COLOR_FORMAT_I2

enumerator LV_COLOR_FORMAT_I4

enumerator LV_COLOR_FORMAT_I8

enumerator LV_COLOR_FORMAT_A8

enumerator LV_COLOR_FORMAT_RGB565

enumerator LV_COLOR_FORMAT_ARGB8565: Not supported by sw renderer yet.

enumerator LV_COLOR_FORMAT_RGB565A8: Color array followed by Alpha array

enumerator LV_COLOR_FORMAT_AL88: L8 with alpha >

enumerator LV_COLOR_FORMAT_RGB888

enumerator LV_COLOR_FORMAT_ARGB8888

enumerator LV_COLOR_FORMAT_XRGB8888

enumerator LV_COLOR_FORMAT_A1

enumerator LV_COLOR_FORMAT_A2

enumerator LV_COLOR_FORMAT_A4

enumerator LV_COLOR_FORMAT_YUV_START

enumerator LV_COLOR_FORMAT_I420

enumerator LV_COLOR_FORMAT_I422

enumerator LV_COLOR_FORMAT_I444

enumerator LV_COLOR_FORMAT_I400

enumerator LV_COLOR_FORMAT_NV21

enumerator LV_COLOR_FORMAT_NV12

enumerator LV_COLOR_FORMAT_YUY2

enumerator LV_COLOR_FORMAT_UYVY

enumerator LV_COLOR_FORMAT_YUV_END

enumerator LV_COLOR_FORMAT_NATIVE

enumerator LV_COLOR_FORMAT_NATIVE_WITH_ALPHA

Functions

uint8_t lv_color_format_get_bpp(lv_color_format_t cf)

Get the pixel size of a color format in bits, bpp

See also

LV_COLOR_FORMAT_GET_BPP

Parameters:: cf -- a color format (LV_COLOR_FORMAT_...)
Returns:: the pixel size in bits

uint8_t lv_color_format_get_size(lv_color_format_t cf)

Get the pixel size of a color format in bytes

See also

LV_COLOR_FORMAT_GET_SIZE

Parameters:: cf -- a color format (LV_COLOR_FORMAT_...)
Returns:: the pixel size in bytes

bool lv_color_format_has_alpha(lv_color_format_t src_cf)

Check if a color format has alpha channel or not

Parameters:: src_cf -- a color format (LV_COLOR_FORMAT_...)
Returns:: true: has alpha channel; false: doesn't have alpha channel

lv_color32_t lv_color_to_32(lv_color_t color, lv_opa_t opa)

Create an ARGB8888 color from RGB888 + alpha

Parameters:

color -- an RGB888 color
opa -- the alpha value

Returns:

the ARGB8888 color

uint32_t lv_color_to_int(lv_color_t c)

Convert an RGB888 color to an integer

Parameters:: c -- an RGB888 color
Returns:: c as an integer

bool lv_color_eq(lv_color_t c1, lv_color_t c2)

Check if two RGB888 color are equal

Parameters:

c1 -- the first color
c2 -- the second color

Returns:

true: equal

bool lv_color32_eq(lv_color32_t c1, lv_color32_t c2)

Check if two ARGB8888 color are equal

Parameters:

c1 -- the first color
c2 -- the second color

Returns:

true: equal

lv_color_t lv_color_hex(uint32_t c)

Create a color from 0x000000..0xffffff input

Parameters:: c -- the hex input
Returns:: the color

lv_color_t lv_color_make(uint8_t r, uint8_t g, uint8_t b)

Create an RGB888 color

Parameters:

r -- the red channel (0..255)
g -- the green channel (0..255)
b -- the blue channel (0..255)

Returns:

the color

lv_color32_t lv_color32_make(uint8_t r, uint8_t g, uint8_t b, uint8_t a)

Create an ARGB8888 color

Parameters:

r -- the red channel (0..255)
g -- the green channel (0..255)
b -- the blue channel (0..255)
a -- the alpha channel (0..255)

Returns:

the color

lv_color_t lv_color_hex3(uint32_t c)

Create a color from 0x000..0xfff input

Parameters:: c -- the hex input (e.g. 0x123 will be 0x112233)
Returns:: the color

uint16_t lv_color_to_u16(lv_color_t color)

Convert am RGB888 color to RGB565 stored in uint16_t

Parameters:: color -- and RGB888 color
Returns:: color as RGB565 on uin16_t

uint32_t lv_color_to_u32(lv_color_t color)

Convert am RGB888 color to XRGB8888 stored in uint32_t

Parameters:: color -- and RGB888 color
Returns:: color as XRGB8888 on uin32_t (the alpha channel is always set to 0xFF)

uint16_t lv_color_16_16_mix(uint16_t c1, uint16_t c2, uint8_t mix)

Mix two RGB565 colors

Parameters:

c1 -- the first color (typically the foreground color)
c2 -- the second color (typically the background color)
mix -- 0..255, or LV_OPA_0/10/20...

Returns:

mix == 0: c2 mix == 255: c1 mix == 128: 0.5 x c1 + 0.5 x c2

lv_color_t lv_color_lighten(lv_color_t c, lv_opa_t lvl)

Mix white to a color

Parameters:

c -- the base color
lvl -- the intensity of white (0: no change, 255: fully white)

Returns:

the mixed color

lv_color_t lv_color_darken(lv_color_t c, lv_opa_t lvl)

Mix black to a color

Parameters:

c -- the base color
lvl -- the intensity of black (0: no change, 255: fully black)

Returns:

the mixed color

lv_color_t lv_color_hsv_to_rgb(uint16_t h, uint8_t s, uint8_t v)

Convert a HSV color to RGB

Parameters:

h -- hue [0..359]
s -- saturation [0..100]
v -- value [0..100]

Returns:

the given RGB color in RGB (with LV_COLOR_DEPTH depth)

lv_color_hsv_t lv_color_rgb_to_hsv(uint8_t r8, uint8_t g8, uint8_t b8)

Convert a 32-bit RGB color to HSV

Parameters:

r8 -- 8-bit red
g8 -- 8-bit green
b8 -- 8-bit blue

Returns:

the given RGB color in HSV

lv_color_hsv_t lv_color_to_hsv(lv_color_t color)

Convert a color to HSV

Parameters:: color -- color
Returns:: the given color in HSV

lv_color_t lv_color_white(void)

A helper for white color

Returns:: a white color

lv_color_t lv_color_black(void)

A helper for black color

Returns:: a black color

void lv_color_premultiply(lv_color32_t *c)

void lv_color16_premultiply(lv_color16_t *c, lv_opa_t a)

uint8_t lv_color_luminance(lv_color_t c)

Get the luminance of a color: luminance = 0.3 R + 0.59 G + 0.11 B

Parameters:: c -- a color
Returns:: the brightness [0..255]

uint8_t lv_color16_luminance(const lv_color16_t c)

Get the luminance of a color16: luminance = 0.3 R + 0.59 G + 0.11 B

Parameters:: c -- a color
Returns:: the brightness [0..255]

uint8_t lv_color24_luminance(const uint8_t *c)

Get the luminance of a color24: luminance = 0.3 R + 0.59 G + 0.11 B

Parameters:: c -- a color
Returns:: the brightness [0..255]

uint8_t lv_color32_luminance(lv_color32_t c)

Get the luminance of a color32: luminance = 0.3 R + 0.59 G + 0.11 B

Parameters:: c -- a color
Returns:: the brightness [0..255]

Variables

const lv_color_filter_dsc_t lv_color_filter_shade

struct lv_color_t

Public Members

uint8_t blue

uint8_t green

uint8_t red

struct lv_color16_t

Public Members

uint16_t blue

uint16_t green

uint16_t red

struct lv_color32_t

Public Members

uint8_t blue

uint8_t green

uint8_t red

uint8_t alpha

struct lv_color_hsv_t

Public Members

uint16_t h

uint8_t s

uint8_t v

struct lv_color16a_t

Public Members

uint8_t lumi

uint8_t alpha