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Tohur
2025-11-18 14:18:26 -07:00
parent 33eb6e3707
commit 27277ec342
6106 changed files with 3571167 additions and 0 deletions
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3rdparty/plutosvg/plutovg/source/plutovg-paint.c vendored Normal file
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#include "plutovg-private.h"
#include "plutovg-utils.h"
#include <ctype.h>
void plutovg_color_init_rgb(plutovg_color_t* color, float r, float g, float b)
{
plutovg_color_init_rgba(color, r, g, b, 1.f);
}
void plutovg_color_init_rgba(plutovg_color_t* color, float r, float g, float b, float a)
{
color->r = plutovg_clamp(r, 0.f, 1.f);
color->g = plutovg_clamp(g, 0.f, 1.f);
color->b = plutovg_clamp(b, 0.f, 1.f);
color->a = plutovg_clamp(a, 0.f, 1.f);
}
void plutovg_color_init_rgb8(plutovg_color_t* color, int r, int g, int b)
{
plutovg_color_init_rgba8(color, r, g, b, 255);
}
void plutovg_color_init_rgba8(plutovg_color_t* color, int r, int g, int b, int a)
{
plutovg_color_init_rgba(color, r / 255.f, g / 255.f, b / 255.f, a / 255.f);
}
void plutovg_color_init_rgba32(plutovg_color_t* color, unsigned int value)
{
uint8_t r = (value >> 24) & 0xFF;
uint8_t g = (value >> 16) & 0xFF;
uint8_t b = (value >> 8) & 0xFF;
uint8_t a = (value >> 0) & 0xFF;
plutovg_color_init_rgba8(color, r, g, b, a);
}
void plutovg_color_init_argb32(plutovg_color_t* color, unsigned int value)
{
uint8_t a = (value >> 24) & 0xFF;
uint8_t r = (value >> 16) & 0xFF;
uint8_t g = (value >> 8) & 0xFF;
uint8_t b = (value >> 0) & 0xFF;
plutovg_color_init_rgba8(color, r, g, b, a);
}
void plutovg_color_init_hsl(plutovg_color_t* color, float h, float s, float l)
{
plutovg_color_init_hsla(color, h, s, l, 1.f);
}
static inline float hsl_component(float h, float s, float l, float n)
{
const float k = fmodf(n + h / 30.f, 12.f);
const float a = s * plutovg_min(l, 1.f - l);
return l - a * plutovg_max(-1.f, plutovg_min(1.f, plutovg_min(k - 3.f, 9.f - k)));
}
void plutovg_color_init_hsla(plutovg_color_t* color, float h, float s, float l, float a)
{
h = fmodf(h, 360.f);
if(h < 0.f) { h += 360.f; }
float r = hsl_component(h, s, l, 0);
float g = hsl_component(h, s, l, 8);
float b = hsl_component(h, s, l, 4);
plutovg_color_init_rgba(color, r, g, b, a);
}
unsigned int plutovg_color_to_rgba32(const plutovg_color_t* color)
{
uint32_t r = lroundf(color->r * 255);
uint32_t g = lroundf(color->g * 255);
uint32_t b = lroundf(color->b * 255);
uint32_t a = lroundf(color->a * 255);
return (r << 24) | (g << 16) | (b << 8) | (a);
}
unsigned int plutovg_color_to_argb32(const plutovg_color_t* color)
{
uint32_t a = lroundf(color->a * 255);
uint32_t r = lroundf(color->r * 255);
uint32_t g = lroundf(color->g * 255);
uint32_t b = lroundf(color->b * 255);
return (a << 24) | (r << 16) | (g << 8) | (b);
}
static inline uint8_t hex_digit(uint8_t c)
{
if(c >= '0' && c <= '9')
return c - '0';
if(c >= 'a' && c <= 'f')
return 10 + c - 'a';
if(c >= 'A' && c <= 'F')
return 10 + c - 'A';
return 0;
}
static inline uint8_t hex_byte(uint8_t c1, uint8_t c2)
{
uint8_t h1 = hex_digit(c1);
uint8_t h2 = hex_digit(c2);
return (h1 << 4) | h2;
}
#define MAX_NAME 20
typedef struct {
const char* name;
uint32_t value;
} color_entry_t;
static int color_entry_compare(const void* a, const void* b)
{
const char* name = a;
const color_entry_t* entry = b;
return strcmp(name, entry->name);
}
static bool parse_rgb_component(const char** begin, const char* end, float* component)
{
float value = 0;
if(!plutovg_parse_number(begin, end, &value))
return false;
if(plutovg_skip_delim(begin, end, '%'))
value *= 2.55f;
*component = plutovg_clamp(value, 0.f, 255.f) / 255.f;
return true;
}
static bool parse_alpha_component(const char** begin, const char* end, float* component)
{
float value = 0;
if(!plutovg_parse_number(begin, end, &value))
return false;
if(plutovg_skip_delim(begin, end, '%'))
value /= 100.f;
*component = plutovg_clamp(value, 0.f, 1.f);
return true;
}
int plutovg_color_parse(plutovg_color_t* color, const char* data, int length)
{
if(length == -1)
length = strlen(data);
const char* it = data;
const char* end = it + length;
plutovg_skip_ws(&it, end);
if(plutovg_skip_delim(&it, end, '#')) {
int r, g, b, a = 255;
const char* begin = it;
while(it < end && isxdigit(*it))
++it;
int count = it - begin;
if(count == 3 || count == 4) {
r = hex_byte(begin[0], begin[0]);
g = hex_byte(begin[1], begin[1]);
b = hex_byte(begin[2], begin[2]);
if(count == 4) {
a = hex_byte(begin[3], begin[3]);
}
} else if(count == 6 || count == 8) {
r = hex_byte(begin[0], begin[1]);
g = hex_byte(begin[2], begin[3]);
b = hex_byte(begin[4], begin[5]);
if(count == 8) {
a = hex_byte(begin[6], begin[7]);
}
} else {
return 0;
}
plutovg_color_init_rgba8(color, r, g, b, a);
} else {
int name_length = 0;
char name[MAX_NAME + 1];
while(it < end && name_length < MAX_NAME && isalpha(*it))
name[name_length++] = tolower(*it++);
name[name_length] = '\0';
if(strcmp(name, "transparent") == 0) {
plutovg_color_init_rgba(color, 0, 0, 0, 0);
} else if(strcmp(name, "rgb") == 0 || strcmp(name, "rgba") == 0) {
if(!plutovg_skip_ws_and_delim(&it, end, '('))
return 0;
float r, g, b, a = 1.f;
if(!parse_rgb_component(&it, end, &r)
|| !plutovg_skip_ws_and_comma(&it, end)
|| !parse_rgb_component(&it, end, &g)
|| !plutovg_skip_ws_and_comma(&it, end)
|| !parse_rgb_component(&it, end, &b)) {
return 0;
}
if(plutovg_skip_ws_and_comma(&it, end)
&& !parse_alpha_component(&it, end, &a)) {
return 0;
}
plutovg_skip_ws(&it, end);
if(!plutovg_skip_delim(&it, end, ')'))
return 0;
plutovg_color_init_rgba(color, r, g, b, a);
} else if(strcmp(name, "hsl") == 0 || strcmp(name, "hsla") == 0) {
if(!plutovg_skip_ws_and_delim(&it, end, '('))
return 0;
float h, s, l, a = 1.f;
if(!plutovg_parse_number(&it, end, &h)
|| !plutovg_skip_ws_and_comma(&it, end)
|| !parse_alpha_component(&it, end, &s)
|| !plutovg_skip_ws_and_comma(&it, end)
|| !parse_alpha_component(&it, end, &l)) {
return 0;
}
if(plutovg_skip_ws_and_comma(&it, end)
&& !parse_alpha_component(&it, end, &a)) {
return 0;
}
plutovg_skip_ws(&it, end);
if(!plutovg_skip_delim(&it, end, ')'))
return 0;
plutovg_color_init_hsla(color, h, s, l, a);
} else {
static const color_entry_t colormap[] = {
{"aliceblue", 0xF0F8FF},
{"antiquewhite", 0xFAEBD7},
{"aqua", 0x00FFFF},
{"aquamarine", 0x7FFFD4},
{"azure", 0xF0FFFF},
{"beige", 0xF5F5DC},
{"bisque", 0xFFE4C4},
{"black", 0x000000},
{"blanchedalmond", 0xFFEBCD},
{"blue", 0x0000FF},
{"blueviolet", 0x8A2BE2},
{"brown", 0xA52A2A},
{"burlywood", 0xDEB887},
{"cadetblue", 0x5F9EA0},
{"chartreuse", 0x7FFF00},
{"chocolate", 0xD2691E},
{"coral", 0xFF7F50},
{"cornflowerblue", 0x6495ED},
{"cornsilk", 0xFFF8DC},
{"crimson", 0xDC143C},
{"cyan", 0x00FFFF},
{"darkblue", 0x00008B},
{"darkcyan", 0x008B8B},
{"darkgoldenrod", 0xB8860B},
{"darkgray", 0xA9A9A9},
{"darkgreen", 0x006400},
{"darkgrey", 0xA9A9A9},
{"darkkhaki", 0xBDB76B},
{"darkmagenta", 0x8B008B},
{"darkolivegreen", 0x556B2F},
{"darkorange", 0xFF8C00},
{"darkorchid", 0x9932CC},
{"darkred", 0x8B0000},
{"darksalmon", 0xE9967A},
{"darkseagreen", 0x8FBC8F},
{"darkslateblue", 0x483D8B},
{"darkslategray", 0x2F4F4F},
{"darkslategrey", 0x2F4F4F},
{"darkturquoise", 0x00CED1},
{"darkviolet", 0x9400D3},
{"deeppink", 0xFF1493},
{"deepskyblue", 0x00BFFF},
{"dimgray", 0x696969},
{"dimgrey", 0x696969},
{"dodgerblue", 0x1E90FF},
{"firebrick", 0xB22222},
{"floralwhite", 0xFFFAF0},
{"forestgreen", 0x228B22},
{"fuchsia", 0xFF00FF},
{"gainsboro", 0xDCDCDC},
{"ghostwhite", 0xF8F8FF},
{"gold", 0xFFD700},
{"goldenrod", 0xDAA520},
{"gray", 0x808080},
{"green", 0x008000},
{"greenyellow", 0xADFF2F},
{"grey", 0x808080},
{"honeydew", 0xF0FFF0},
{"hotpink", 0xFF69B4},
{"indianred", 0xCD5C5C},
{"indigo", 0x4B0082},
{"ivory", 0xFFFFF0},
{"khaki", 0xF0E68C},
{"lavender", 0xE6E6FA},
{"lavenderblush", 0xFFF0F5},
{"lawngreen", 0x7CFC00},
{"lemonchiffon", 0xFFFACD},
{"lightblue", 0xADD8E6},
{"lightcoral", 0xF08080},
{"lightcyan", 0xE0FFFF},
{"lightgoldenrodyellow", 0xFAFAD2},
{"lightgray", 0xD3D3D3},
{"lightgreen", 0x90EE90},
{"lightgrey", 0xD3D3D3},
{"lightpink", 0xFFB6C1},
{"lightsalmon", 0xFFA07A},
{"lightseagreen", 0x20B2AA},
{"lightskyblue", 0x87CEFA},
{"lightslategray", 0x778899},
{"lightslategrey", 0x778899},
{"lightsteelblue", 0xB0C4DE},
{"lightyellow", 0xFFFFE0},
{"lime", 0x00FF00},
{"limegreen", 0x32CD32},
{"linen", 0xFAF0E6},
{"magenta", 0xFF00FF},
{"maroon", 0x800000},
{"mediumaquamarine", 0x66CDAA},
{"mediumblue", 0x0000CD},
{"mediumorchid", 0xBA55D3},
{"mediumpurple", 0x9370DB},
{"mediumseagreen", 0x3CB371},
{"mediumslateblue", 0x7B68EE},
{"mediumspringgreen", 0x00FA9A},
{"mediumturquoise", 0x48D1CC},
{"mediumvioletred", 0xC71585},
{"midnightblue", 0x191970},
{"mintcream", 0xF5FFFA},
{"mistyrose", 0xFFE4E1},
{"moccasin", 0xFFE4B5},
{"navajowhite", 0xFFDEAD},
{"navy", 0x000080},
{"oldlace", 0xFDF5E6},
{"olive", 0x808000},
{"olivedrab", 0x6B8E23},
{"orange", 0xFFA500},
{"orangered", 0xFF4500},
{"orchid", 0xDA70D6},
{"palegoldenrod", 0xEEE8AA},
{"palegreen", 0x98FB98},
{"paleturquoise", 0xAFEEEE},
{"palevioletred", 0xDB7093},
{"papayawhip", 0xFFEFD5},
{"peachpuff", 0xFFDAB9},
{"peru", 0xCD853F},
{"pink", 0xFFC0CB},
{"plum", 0xDDA0DD},
{"powderblue", 0xB0E0E6},
{"purple", 0x800080},
{"rebeccapurple", 0x663399},
{"red", 0xFF0000},
{"rosybrown", 0xBC8F8F},
{"royalblue", 0x4169E1},
{"saddlebrown", 0x8B4513},
{"salmon", 0xFA8072},
{"sandybrown", 0xF4A460},
{"seagreen", 0x2E8B57},
{"seashell", 0xFFF5EE},
{"sienna", 0xA0522D},
{"silver", 0xC0C0C0},
{"skyblue", 0x87CEEB},
{"slateblue", 0x6A5ACD},
{"slategray", 0x708090},
{"slategrey", 0x708090},
{"snow", 0xFFFAFA},
{"springgreen", 0x00FF7F},
{"steelblue", 0x4682B4},
{"tan", 0xD2B48C},
{"teal", 0x008080},
{"thistle", 0xD8BFD8},
{"tomato", 0xFF6347},
{"turquoise", 0x40E0D0},
{"violet", 0xEE82EE},
{"wheat", 0xF5DEB3},
{"white", 0xFFFFFF},
{"whitesmoke", 0xF5F5F5},
{"yellow", 0xFFFF00},
{"yellowgreen", 0x9ACD32}
};
const color_entry_t* entry = bsearch(name, colormap, sizeof(colormap) / sizeof(color_entry_t), sizeof(color_entry_t), color_entry_compare);
if(entry == NULL)
return 0;
plutovg_color_init_argb32(color, 0xFF000000 | entry->value);
}
}
plutovg_skip_ws(&it, end);
return it - data;
}
static void* plutovg_paint_create(plutovg_paint_type_t type, size_t size)
{
plutovg_paint_t* paint = malloc(size);
paint->ref_count = 1;
paint->type = type;
return paint;
}
plutovg_paint_t* plutovg_paint_create_rgb(float r, float g, float b)
{
return plutovg_paint_create_rgba(r, g, b, 1.f);
}
plutovg_paint_t* plutovg_paint_create_rgba(float r, float g, float b, float a)
{
plutovg_solid_paint_t* solid = plutovg_paint_create(PLUTOVG_PAINT_TYPE_COLOR, sizeof(plutovg_solid_paint_t));
solid->color.r = plutovg_clamp(r, 0.f, 1.f);
solid->color.g = plutovg_clamp(g, 0.f, 1.f);
solid->color.b = plutovg_clamp(b, 0.f, 1.f);
solid->color.a = plutovg_clamp(a, 0.f, 1.f);
return &solid->base;
}
plutovg_paint_t* plutovg_paint_create_color(const plutovg_color_t* color)
{
return plutovg_paint_create_rgba(color->r, color->g, color->b, color->a);
}
static plutovg_gradient_paint_t* plutovg_gradient_create(plutovg_gradient_type_t type, plutovg_spread_method_t spread, const plutovg_gradient_stop_t* stops, int nstops, const plutovg_matrix_t* matrix)
{
plutovg_gradient_paint_t* gradient = plutovg_paint_create(PLUTOVG_PAINT_TYPE_GRADIENT, sizeof(plutovg_gradient_paint_t) + nstops * sizeof(plutovg_gradient_stop_t));
gradient->type = type;
gradient->spread = spread;
gradient->matrix = matrix ? *matrix : PLUTOVG_IDENTITY_MATRIX;
gradient->stops = (plutovg_gradient_stop_t*)(gradient + 1);
gradient->nstops = nstops;
float prev_offset = 0.f;
for(int i = 0; i < nstops; ++i) {
const plutovg_gradient_stop_t* stop = stops + i;
gradient->stops[i].offset = plutovg_max(prev_offset, plutovg_clamp(stop->offset, 0.f, 1.f));
gradient->stops[i].color.r = plutovg_clamp(stop->color.r, 0.f, 1.f);
gradient->stops[i].color.g = plutovg_clamp(stop->color.g, 0.f, 1.f);
gradient->stops[i].color.b = plutovg_clamp(stop->color.b, 0.f, 1.f);
gradient->stops[i].color.a = plutovg_clamp(stop->color.a, 0.f, 1.f);
prev_offset = gradient->stops[i].offset;
}
return gradient;
}
plutovg_paint_t* plutovg_paint_create_linear_gradient(float x1, float y1, float x2, float y2, plutovg_spread_method_t spread, const plutovg_gradient_stop_t* stops, int nstops, const plutovg_matrix_t* matrix)
{
plutovg_gradient_paint_t* gradient = plutovg_gradient_create(PLUTOVG_GRADIENT_TYPE_LINEAR, spread, stops, nstops, matrix);
gradient->values[0] = x1;
gradient->values[1] = y1;
gradient->values[2] = x2;
gradient->values[3] = y2;
return &gradient->base;
}
plutovg_paint_t* plutovg_paint_create_radial_gradient(float cx, float cy, float cr, float fx, float fy, float fr, plutovg_spread_method_t spread, const plutovg_gradient_stop_t* stops, int nstops, const plutovg_matrix_t* matrix)
{
plutovg_gradient_paint_t* gradient = plutovg_gradient_create(PLUTOVG_GRADIENT_TYPE_RADIAL, spread, stops, nstops, matrix);
gradient->values[0] = cx;
gradient->values[1] = cy;
gradient->values[2] = cr;
gradient->values[3] = fx;
gradient->values[4] = fy;
gradient->values[5] = fr;
return &gradient->base;
}
plutovg_paint_t* plutovg_paint_create_texture(plutovg_surface_t* surface, plutovg_texture_type_t type, float opacity, const plutovg_matrix_t* matrix)
{
plutovg_texture_paint_t* texture = plutovg_paint_create(PLUTOVG_PAINT_TYPE_TEXTURE, sizeof(plutovg_texture_paint_t));
texture->type = type;
texture->opacity = plutovg_clamp(opacity, 0.f, 1.f);
texture->matrix = matrix ? *matrix : PLUTOVG_IDENTITY_MATRIX;
texture->surface = plutovg_surface_reference(surface);
return &texture->base;
}
plutovg_paint_t* plutovg_paint_reference(plutovg_paint_t* paint)
{
if(paint == NULL)
return NULL;
++paint->ref_count;
return paint;
}
void plutovg_paint_destroy(plutovg_paint_t* paint)
{
if(paint == NULL)
return;
if(--paint->ref_count == 0) {
if(paint->type == PLUTOVG_PAINT_TYPE_TEXTURE) {
plutovg_texture_paint_t* texture = (plutovg_texture_paint_t*)(paint);
plutovg_surface_destroy(texture->surface);
}
free(paint);
}
}
int plutovg_paint_get_reference_count(const plutovg_paint_t* paint)
{
if(paint)
return paint->ref_count;
return 0;
}