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rgba.c
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/* @license
* This file is part of the Game Closure SDK.
*
* The Game Closure SDK is free software: you can redistribute it and/or modify
* it under the terms of the Mozilla Public License v. 2.0 as published by Mozilla.
* The Game Closure SDK is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Mozilla Public License v. 2.0 for more details.
* You should have received a copy of the Mozilla Public License v. 2.0
* along with the Game Closure SDK. If not, see <http://mozilla.org/MPL/2.0/>.
*/
/**
* @file rgba.c
* @brief
*/
#include "core/rgba.h"
#include "core/log.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "core/deps/uthash/uthash.h"
typedef struct html_color_t {
const char *name;
rgba color;
UT_hash_handle hh;
} html_color;
static html_color *defaults = NULL;
#define ADD_COLOR(color) HASH_ADD_KEYPTR(hh, defaults, (color).name, strlen((color).name), (&color))
static html_color colors[] = {
{"aliceblue", {240, 248, 255, 1}},
{"antiquewhite", {250, 235, 215, 1}},
{"aqua", { 0, 255, 255, 1}},
{"aquamarine", {127, 255, 212, 1}},
{"azure", {240, 255, 255, 1}},
{"beige", {245, 245, 220, 1}},
{"bisque", {255, 228, 196, 1}},
{"black", { 0, 0, 0, 1}},
{"blanchedalmond", {255, 235, 205, 1}},
{"blue", { 0, 0, 255, 1}},
{"blueviolet", {138, 43, 226, 1}},
{"brown", {165, 42, 42, 1}},
{"burlywood", {222, 184, 135, 1}},
{"cadetblue", { 95, 158, 160, 1}},
{"chartreuse", {127, 255, 0, 1}},
{"chocolate", {210, 105, 30, 1}},
{"coral", {255, 127, 80, 1}},
{"cornflowerblue", {100, 149, 237, 1}},
{"cornsilk", {255, 248, 220, 1}},
{"crimson", {220, 20, 60, 1}},
{"cyan", { 0, 255, 255, 1}},
{"darkblue", { 0, 0, 139, 1}},
{"darkcyan", { 0, 139, 139, 1}},
{"darkgoldenrod", {184, 134, 11, 1}},
{"darkgray", {169, 169, 169, 1}},
{"darkgreen", { 0, 100, 0, 1}},
{"darkgrey", {169, 169, 169, 1}},
{"darkkhaki", {189, 183, 107, 1}},
{"darkmagenta", {139, 0, 139, 1}},
{"darkolivegreen", { 85, 107, 47, 1}},
{"darkorange", {255, 140, 0, 1}},
{"darkorchid", {153, 50, 204, 1}},
{"darkred", {139, 0, 0, 1}},
{"darksalmon", {233, 150, 122, 1}},
{"darkseagreen", {143, 188, 143, 1}},
{"darkslateblue", { 72, 61, 139, 1}},
{"darkslategray", { 47, 79, 79, 1}},
{"darkslategrey", { 47, 79, 79, 1}},
{"darkturquoise", { 0, 206, 209, 1}},
{"darkviolet", {148, 0, 211, 1}},
{"deeppink", {255, 20, 147, 1}},
{"deepskyblue", { 0, 191, 255, 1}},
{"dimgray", {105, 105, 105, 1}},
{"dimgrey", {105, 105, 105, 1}},
{"dodgerblue", { 30, 144, 255, 1}},
{"firebrick", {178, 34, 34, 1}},
{"floralwhite", {255, 250, 240, 1}},
{"forestgreen", { 34, 139, 34, 1}},
{"fuchsia", {255, 0, 255, 1}},
{"gainsboro", {220, 220, 220, 1}},
{"ghostwhite", {248, 248, 255, 1}},
{"gold", {255, 215, 0, 1}},
{"goldenrod", {218, 165, 32, 1}},
{"gray", {128, 128, 128, 1}},
{"grey", {128, 128, 128, 1}},
{"green", { 0, 128, 0, 1}},
{"greenyellow", {173, 255, 47, 1}},
{"honeydew", {240, 255, 240, 1}},
{"hotpink", {255, 105, 180, 1}},
{"indianred", {205, 92, 92, 1}},
{"indigo", { 75, 0, 130, 1}},
{"ivory", {255, 255, 240, 1}},
{"khaki", {240, 230, 140, 1}},
{"lavender", {230, 230, 250, 1}},
{"lavenderblush", {255, 240, 245, 1}},
{"lawngreen", {124, 252, 0, 1}},
{"lemonchiffon", {255, 250, 205, 1}},
{"lightblue", {173, 216, 230, 1}},
{"lightcoral", {240, 128, 128, 1}},
{"lightcyan", {224, 255, 255, 1}},
{"lightgoldenrodyellow", {250, 250, 210, 1}},
{"lightgray", {211, 211, 211, 1}},
{"lightgreen", {144, 238, 144, 1}},
{"lightgrey", {211, 211, 211, 1}},
{"lightpink", {255, 182, 193, 1}},
{"lightsalmon", {255, 160, 122, 1}},
{"lightseagreen", { 32, 178, 170, 1}},
{"lightskyblue", {135, 206, 250, 1}},
{"lightslategray", {119, 136, 153, 1}},
{"lightslategrey", {119, 136, 153, 1}},
{"lightsteelblue", {176, 196, 222, 1}},
{"lightyellow", {255, 255, 224, 1}},
{"lime", { 0, 255, 0, 1}},
{"limegreen", { 50, 205, 50, 1}},
{"linen", {250, 240, 230, 1}},
{"magenta", {255, 0, 255, 1}},
{"maroon", {128, 0, 0, 1}},
{"mediumaquamarine", {102, 205, 170, 1}},
{"mediumblue", { 0, 0, 205, 1}},
{"mediumorchid", {186, 85, 211, 1}},
{"mediumpurple", {147, 112, 219, 1}},
{"mediumseagreen", { 60, 179, 113, 1}},
{"mediumslateblue", {123, 104, 238, 1}},
{"mediumspringgreen", { 0, 250, 154, 1}},
{"mediumturquoise", { 72, 209, 204, 1}},
{"mediumvioletred", {199, 21, 133, 1}},
{"midnightblue", { 25, 25, 112, 1}},
{"mintcream", {245, 255, 250, 1}},
{"mistyrose", {255, 228, 225, 1}},
{"moccasin", {255, 228, 181, 1}},
{"navajowhite", {255, 222, 173, 1}},
{"navy", { 0, 0, 128, 1}},
{"oldlace", {253, 245, 230, 1}},
{"olive", {128, 128, 0, 1}},
{"olivedrab", {107, 142, 35, 1}},
{"orange", {255, 165, 0, 1}},
{"orangered", {255, 69, 0, 1}},
{"orchid", {218, 112, 214, 1}},
{"palegoldenrod", {238, 232, 170, 1}},
{"palegreen", {152, 251, 152, 1}},
{"paleturquoise", {175, 238, 238, 1}},
{"palevioletred", {219, 112, 147, 1}},
{"papayawhip", {255, 239, 213, 1}},
{"peachpuff", {255, 218, 185, 1}},
{"peru", {205, 133, 63, 1}},
{"pink", {255, 192, 203, 1}},
{"plum", {221, 160, 221, 1}},
{"powderblue", {176, 224, 230, 1}},
{"purple", {128, 0, 128, 1}},
{"red", {255, 0, 0, 1}},
{"rosybrown", {188, 143, 143, 1}},
{"royalblue", { 65, 105, 225, 1}},
{"saddlebrown", {139, 69, 19, 1}},
{"salmon", {250, 128, 114, 1}},
{"sandybrown", {244, 164, 96, 1}},
{"seagreen", { 46, 139, 87, 1}},
{"seashell", {255, 245, 238, 1}},
{"sienna", {160, 82, 45, 1}},
{"silver", {192, 192, 192, 1}},
{"skyblue", {135, 206, 235, 1}},
{"slateblue", {106, 90, 205, 1}},
{"slategray", {112, 128, 144, 1}},
{"slategrey", {112, 128, 144, 1}},
{"snow", {255, 250, 250, 1}},
{"springgreen", { 0, 255, 127, 1}},
{"steelblue", { 70, 130, 180, 1}},
{"tan", {210, 180, 140, 1}},
{"teal", { 0, 128, 128, 1}},
{"thistle", {216, 191, 216, 1}},
{"tomato", {255, 99, 71, 1}},
{"transparent", { 0, 0, 0, 0}},
{"turquoise", { 64, 224, 208, 1}},
{"violet", {238, 130, 238, 1}},
{"wheat", {245, 222, 179, 1}},
{"white", {255, 255, 255, 1}},
{"whitesmoke", {245, 245, 245, 1}},
{"yellow", {255, 255, 0, 1}},
{"yellowgreen", {154, 205, 50, 1}},
{NULL}
};
/**
* @name rgba_init
* @brief
* @retval NONE
*/
void rgba_init() {
static bool done_rgba_init = false;
if (!done_rgba_init) {
done_rgba_init = true;
int i = 0;
for (; colors[i].name != NULL; i++) {
ADD_COLOR(colors[i]);
}
}
}
/**
* @name rgba_equals
* @brief checks if the given rgba values are equal
* @param a - (rgba *) first rgba to compare
* @param b - (rgba *) second rgba to compare
* @retval bool - (true | false)
*/
bool rgba_equals(rgba *a, rgba *b) {
return a->r == b->r && a->g == b->g && a->b == b->b && a->a == b->a;
}
/**
* @name rgba_parse
* @brief parses the given color string into the given rgba object
* @param color - (rgba *) rgba object which will hold the parsed color string
* @param src - (const char *) color string to be parsed
* @retval NONE
*/
void rgba_parse(rgba *color, const char *src) {
int r = 0, g = 0, b = 0;
float a = 1;
size_t n = strlen(src);
if (src[0] == '#') {
char buf[3];
buf[2] = '\0';
if (n == 4) {
buf[0] = src[1];
buf[1] = src[1];
r = (int)strtol(buf, NULL, 16);
buf[0] = src[2];
buf[1] = src[2];
g = (int)strtol(buf, NULL, 16);
buf[0] = src[3];
buf[1] = src[3];
b = (int)strtol(buf, NULL, 16);
} else if (n >= 7) {
buf[0] = src[1];
buf[1] = src[2];
r = (int)strtol(buf, NULL, 16);
buf[0] = src[3];
buf[1] = src[4];
g = (int)strtol(buf, NULL, 16);
buf[0] = src[5];
buf[1] = src[6];
b = (int)strtol(buf, NULL, 16);
}
if (n == 9) {
buf[0] = src[7];
buf[1] = src[8];
a = strtol(buf, NULL, 16) / 255.0;
}
} else if (src[0] == 'r' && src[1] == 'g' && src[2] == 'b') {
bool has_alpha = (src[3] == 'a');
unsigned int i = 3;
while (src[i++] != '(') {
if (i == n) {
return;
}
}
r = atoi(src + i);
while (src[i++] != ',') {
if (i == n) {
return;
}
}
g = atoi(src + i);
while (src[i++] != ',') {
if (i == n) {
return;
}
}
b = atoi(src + i);
if (has_alpha) {
while (src[i++] != ',') {
if (i == n) {
return;
}
}
a = strtod(src + i, NULL);
}
} else {
html_color *c;
HASH_FIND_STR(defaults, src, c);
if (c) {
r = c->color.r;
b = c->color.b;
g = c->color.g;
a = c->color.a;
} else {
a = 0;
}
}
if (r < 0) {
r = 0;
}
if (r > 255) {
r = 255;
}
if (g < 0) {
g = 0;
}
if (g > 255) {
g = 255;
}
if (b < 0) {
b = 0;
}
if (b > 255) {
b = 255;
}
if (a < 0) {
a = 0;
}
if (a > 1) {
a = 1;
}
color->r = r / 255.0;
color->g = g / 255.0;
color->b = b / 255.0;
color->a = a;
}
/**
* @name rgba_to_string
* @brief converts the given rgba color value into the given string
* @param color - (rgba *) rgba color to convert
* @param buf - (char *) string to be converted into
* @retval int -
*/
int rgba_to_string(rgba *color, char *buf) {
LOGFN("rgba_to_string");
return snprintf(buf, RGBA_MAX_STR_LEN, "rgba(%i, %i, %i, %f)", (int)(color->r * 255), (int)(color->g * 255), (int)(color->b * 255), color->a);
}
/**
* @name rgba_print
* @brief pretty print the given rgba color
* @param color - (rgba *)
* @retval NONE
*/
void rgba_print(rgba *color) {
char buf[RGBA_MAX_STR_LEN];
rgba_to_string(color, buf);
LOG("%s", buf);
}