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Colors（颜色）
显示原文 The color module handles all color-related functions like changing color depth, creating colors from hex code, converting between color depths, mixing colors, etc. The type lv_color_t is used to store a color in RGB888 format. This type and format is used in almost all APIs regardless to LV_COLOR_DEPTH. 颜色模块处理所有与颜色相关的功能，如改变颜色深度、从十六进制代码创建颜色、在颜色深度之间转换、混合颜色等。 类型 lv_color_t 用于以RGB888格式存储颜色。无论 LV_COLOR_DEPTH 如何，几乎所有 API 中都使用此类型和格式。 Creating colors（创造色彩） RGB（三原色） 显示原文Create colors from Red, Green and Blue channel values: 从红色、绿色和蓝色通道值创建颜色 /*All channels are 0-255*/ lv_color_t c = lv_color_make(red, green, blue); /*Same but can be used for const initialization too */ lv_color_t c = LV_COLOR_MAKE(red, green, blue); /*From hex code 0x000000..0xFFFFFF interpreted as RED + GREEN + BLUE*/ lv_color_t c = lv_color_hex(0x123456); /*From 3 digits. Same as lv_color_hex(0x112233)*/ lv_color_t c = lv_color_hex3(0x123); HSV（色调饱和值-Hue Saturation Value） 显示原文Create colors from Hue, Saturation and Value values: 根据色相、饱和度和值创建颜色 //h = 0..359, s = 0..100, v = 0..100 lv_color_t c = lv_color_hsv_to_rgb(h, s, v); //All channels are 0-255 lv_color_hsv_t c_hsv = lv_color_rgb_to_hsv(r, g, b); //From lv_color_t variable lv_color_hsv_t c_hsv = lv_color_to_hsv(color); Palette（调色板） 显示原文LVGL includes Material Design's palette of colors. In this system all named colors have a nominal main color as well as four darker and five lighter variants. The names of the colors are as follows: LV_PALETTE_RED LV_PALETTE_PINK LV_PALETTE_PURPLE LV_PALETTE_DEEP_PURPLE LV_PALETTE_INDIGO LV_PALETTE_BLUE LV_PALETTE_LIGHT_BLUE LV_PALETTE_CYAN LV_PALETTE_TEAL LV_PALETTE_GREEN LV_PALETTE_LIGHT_GREEN LV_PALETTE_LIME LV_PALETTE_YELLOW LV_PALETTE_AMBER LV_PALETTE_ORANGE LV_PALETTE_DEEP_ORANGE LV_PALETTE_BROWN LV_PALETTE_BLUE_GREY LV_PALETTE_GREY To get the main color use lv_color_t c = lv_palette_main(LV_PALETTE_...). For the lighter variants of a palette color use lv_color_t c = lv_palette_lighten(LV_PALETTE_..., v). v can be 1..5. For the darker variants of a palette color use lv_color_t c = lv_palette_darken(LV_PALETTE_..., v). v can be 1..4. LVGL中包含 Material Design's palette 的颜色。在这个系统中，所有命名的颜色都有一个名义上的主要颜色，以及四种较暗和五种较浅的变体。 颜色的名称如下： LV_PALETTE_RED LV_PALETTE_PINK LV_PALETTE_PURPLE LV_PALETTE_DEEP_PURPLE LV_PALETTE_INDIGO LV_PALETTE_BLUE LV_PALETTE_LIGHT_BLUE LV_PALETTE_CYAN LV_PALETTE_TEAL LV_PALETTE_GREEN LV_PALETTE_LIGHT_GREEN LV_PALETTE_LIME LV_PALETTE_YELLOW LV_PALETTE_AMBER LV_PALETTE_ORANGE LV_PALETTE_DEEP_ORANGE LV_PALETTE_BROWN LV_PALETTE_BLUE_GREY LV_PALETTE_GREY 要获取主要颜色，请使用 lv_color_t c = lv_palette_main(LV_PALETTE_...). 要获得调整亮度后的调色板颜色，请使用 lv_color_t c = lv_palette_lighten(LV_PALETTE_..., v). v 可以是1到5。 要获得调整深度后的调色板颜色，请使用 lv_color_t c = lv_palette_darken(LV_PALETTE_..., v). v 可以是1到4。 Modify and mix colors（修改和混合颜色） 显示原文The following functions can modify a color: 以下函数可以修改颜色： // Lighten a color. 0: no change, 255: white lv_color_t c = lv_color_lighten(c, lvl); // Darken a color. 0: no change, 255: black lv_color_t c = lv_color_darken(lv_color_t c, lv_opa_t lvl); // Lighten or darken a color. 0: black, 128: no change 255: white lv_color_t c = lv_color_change_lightness(lv_color_t c, lv_opa_t lvl); // Mix two colors with a given ratio 0: full c2, 255: full c1, 128: half c1 and half c2 lv_color_t c = lv_color_mix(c1, c2, ratio); Built-in colors（内置颜色） 显示原文lv_color_white() and lv_color_black() return 0xFFFFFF and 0x000000 respectively. lv_color_white() 和 lv_color_black() 分别返回 0xFFFFFF 和 0x000000。 Opacity（不透明度） 显示原文To describe opacity the lv_opa_t type is created from uint8_t. Some special purpose defines are also introduced: LV_OPA_TRANSP Value: 0, means no opacity making the color completely transparent LV_OPA_10 Value: 25, means the color covers only a little LV_OPA_20 ... OPA_80 follow logically LV_OPA_90 Value: 229, means the color near completely covers LV_OPA_COVER Value: 255, means the color completely covers (full opacity) You can also use the LV_OPA_* defines in lv_color_mix() as a mixing ratio. 描述不透明度时，创建了 lv_opa_t 类型，该类型由 uint8_t 创建。 还引入了一些特殊目的的定义： LV_OPA_TRANSP 值为0，表示完全透明，使颜色完全透明 LV_OPA_10 值为25，表示颜色仅覆盖一小部分 LV_OPA_20 ... OPA_80 遵循逻辑 LV_OPA_90 值为229，表示颜色几乎完全覆盖 LV_OPA_COVER 值为255，表示颜色完全覆盖（完全不透明） 您还可以在 lv_color_mix() 中使用 LV_OPA_* 定义作为混合的 比例。 APIlv_color.h lv_color_op.h lv_blend_neon.h |
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