#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <QTextStream>
#include <QFile>
#include "tiio_svg.h"
#include "tvectorimage.h"
#include "tstroke.h"
#include "tstrokeoutline.h"
#include "tregion.h"
#include "tcurves.h"
#include "tpalette.h"
//=------------------------------------------------------------------------------------------------------------------------------
//=------------------------------------------------------------------------------------------------------------------------------
//=------------------------------------------------------------------------------------------------------------------------------
//=------------------------------------------------------------------------------------------------------------------------------
namespace // svg_parser
{
struct NSVGpath {
float *pts; // Cubic bezier points: x0,y0, [cpx1,cpx1,cpx2,cpy2,x1,y1], ...
int npts; // Total number of bezier points.
char closed; // Flag indicating if shapes should be treated as closed.
struct NSVGpath *next; // Pointer to next path, or NULL if last element.
};
struct NSVGshape {
unsigned int fillColor; // Fill color
unsigned int strokeColor; // Stroke color
float strokeWidth; // Stroke width (scaled)
char hasFill; // Flag indicating if fill exists.
char hasStroke; // Flag indicating id store exists
struct NSVGpath *paths; // Linked list of paths in the image.
struct NSVGshape *next; // Pointer to next shape, or NULL if last element.
};
struct NSVGimage {
float width; // Width of the image, or -1.0f of not set.
float height; // Height of the image, or -1.0f of not set.
char wunits[8]; // Units of the width attribute
char hunits[8]; // Units of the height attribute
struct NSVGshape *shapes; // Linked list of shapes in the image.
};
#define NSVG_PI 3.14159265358979323846264338327f
#define NSVG_KAPPA90 \
0.5522847493f // Lenght proportional to radius of a cubic bezier handle for
// 90deg arcs.
#ifdef _MSC_VER
#pragma warning(disable : 4996) // Switch off security warnings
#pragma warning( \
disable : 4100) // Switch off unreferenced formal parameter warnings
#ifdef __cplusplus
#define NSVG_INLINE inline
#else
#define NSVG_INLINE
#endif
#else
#define NSVG_INLINE inline
#endif
int nsvg__isspace(char c) { return strchr(" \t\n\v\f\r", c) != 0; }
int nsvg__isdigit(char c) { return strchr("0123456789", c) != 0; }
int nsvg__isnum(char c) { return strchr("0123456789+-.eE", c) != 0; }
NSVG_INLINE float nsvg__maxf(float a, float b) { return a > b ? a : b; }
// Simple XML parser
#define NSVG_XML_TAG 1
#define NSVG_XML_CONTENT 2
#define NSVG_XML_MAX_ATTRIBS 256
void nsvg__parseContent(char *s, void (*contentCb)(void *ud, const char *s),
void *ud) {
// Trim start white spaces
while (*s && nsvg__isspace(*s)) s++;
if (!*s) return;
if (contentCb) (*contentCb)(ud, s);
}
void nsvg__parseElement(char *s, void (*startelCb)(void *ud, const char *el,
const char **attr),
void (*endelCb)(void *ud, const char *el), void *ud) {
const char *attr[NSVG_XML_MAX_ATTRIBS];
int nattr = 0;
char *name;
int start = 0;
int end = 0;
// Skip white space after the '<'
while (*s && nsvg__isspace(*s)) s++;
// Check if the tag is end tag
if (*s == '/') {
s++;
end = 1;
} else {
start = 1;
}
// Skip comments, data and preprocessor stuff.
if (!*s || *s == '?' || *s == '!') return;
// Get tag name
name = s;
while (*s && !nsvg__isspace(*s)) s++;
if (*s) {
*s++ = '\0';
}
// Get attribs
while (!end && *s && nattr < NSVG_XML_MAX_ATTRIBS - 3) {
// Skip white space before the attrib name
while (*s && nsvg__isspace(*s)) s++;
if (!*s) break;
if (*s == '/') {
end = 1;
break;
}
attr[nattr++] = s;
// Find end of the attrib name.
while (*s && !nsvg__isspace(*s) && *s != '=') s++;
if (*s) {
*s++ = '\0';
}
// Skip until the beginning of the value.
while (*s && *s != '\"') s++;
if (!*s) break;
s++;
// Store value and find the end of it.
attr[nattr++] = s;
while (*s && *s != '\"') s++;
if (*s) {
*s++ = '\0';
}
}
// List terminator
attr[nattr++] = 0;
attr[nattr++] = 0;
// Call callbacks.
if (start && startelCb) (*startelCb)(ud, name, attr);
if (end && endelCb) (*endelCb)(ud, name);
}
int nsvg__parseXML(char *input, void (*startelCb)(void *ud, const char *el,
const char **attr),
void (*endelCb)(void *ud, const char *el),
void (*contentCb)(void *ud, const char *s), void *ud) {
char *s = input;
char *mark = s;
int state = NSVG_XML_CONTENT;
while (*s) {
if (*s == '<' && state == NSVG_XML_CONTENT) {
// Start of a tag
*s++ = '\0';
nsvg__parseContent(mark, contentCb, ud);
mark = s;
state = NSVG_XML_TAG;
} else if (*s == '>' && state == NSVG_XML_TAG) {
// Start of a content or new tag.
*s++ = '\0';
nsvg__parseElement(mark, startelCb, endelCb, ud);
mark = s;
state = NSVG_XML_CONTENT;
} else {
s++;
}
}
return 1;
}
/* Simple SVG parser. */
#define NSVG_MAX_ATTR 128
struct NSVGAttrib {
float xform[6];
unsigned int fillColor;
unsigned int strokeColor;
float fillOpacity;
float strokeOpacity;
float strokeWidth;
char hasFill;
char hasStroke;
char visible;
};
struct NSVGParser {
struct NSVGAttrib attr[NSVG_MAX_ATTR];
int attrHead;
float *pts;
int npts;
int cpts;
struct NSVGpath *plist;
struct NSVGimage *image;
char pathFlag;
char defsFlag;
};
void nsvg__xformSetIdentity(float *t) {
t[0] = 1.0f;
t[1] = 0.0f;
t[2] = 0.0f;
t[3] = 1.0f;
t[4] = 0.0f;
t[5] = 0.0f;
}
void nsvg__xformSetTranslation(float *t, float tx, float ty) {
t[0] = 1.0f;
t[1] = 0.0f;
t[2] = 0.0f;
t[3] = 1.0f;
t[4] = tx;
t[5] = ty;
}
void nsvg__xformSetScale(float *t, float sx, float sy) {
t[0] = sx;
t[1] = 0.0f;
t[2] = 0.0f;
t[3] = sy;
t[4] = 0.0f;
t[5] = 0.0f;
}
void nsvg__xformSetSkewX(float *t, float a) {
t[0] = 1.0f;
t[1] = 0.0f;
t[2] = tanf(a);
t[3] = 1.0f;
t[4] = 0.0f;
t[5] = 0.0f;
}
void nsvg__xformSetSkewY(float *t, float a) {
t[0] = 1.0f;
t[1] = tanf(a);
t[2] = 0.0f;
t[3] = 1.0f;
t[4] = 0.0f;
t[5] = 0.0f;
}
void nsvg__xformSetRotation(float *t, float a) {
float cs = cosf(a), sn = sinf(a);
t[0] = cs;
t[1] = sn;
t[2] = -sn;
t[3] = cs;
t[4] = 0.0f;
t[5] = 0.0f;
}
void nsvg__xformMultiply(float *t, float *s) {
float t0 = t[0] * s[0] + t[1] * s[2];
float t2 = t[2] * s[0] + t[3] * s[2];
float t4 = t[4] * s[0] + t[5] * s[2] + s[4];
t[1] = t[0] * s[1] + t[1] * s[3];
t[3] = t[2] * s[1] + t[3] * s[3];
t[5] = t[4] * s[1] + t[5] * s[3] + s[5];
t[0] = t0;
t[2] = t2;
t[4] = t4;
}
void nsvg__xformPremultiply(float *t, float *s) {
float s2[6];
memcpy(s2, s, sizeof(float) * 6);
nsvg__xformMultiply(s2, t);
memcpy(t, s2, sizeof(float) * 6);
}
void nsvg__xformPoint(float *dx, float *dy, float x, float y, float *t) {
*dx = x * t[0] + y * t[2] + t[4];
*dy = x * t[1] + y * t[3] + t[5];
}
void nsvg__xformVec(float *dx, float *dy, float x, float y, float *t) {
*dx = x * t[0] + y * t[2];
*dy = x * t[1] + y * t[3];
}
struct NSVGParser *nsvg__createParser() {
struct NSVGParser *p;
p = (struct NSVGParser *)malloc(sizeof(struct NSVGParser));
if (p == NULL) goto error;
memset(p, 0, sizeof(struct NSVGParser));
p->image = (struct NSVGimage *)malloc(sizeof(struct NSVGimage));
if (p->image == NULL) goto error;
memset(p->image, 0, sizeof(struct NSVGimage));
p->image->width = -1.0f;
p->image->height = -1.0f;
// Init style
nsvg__xformSetIdentity(p->attr[0].xform);
p->attr[0].fillColor = 0;
p->attr[0].strokeColor = 0;
p->attr[0].fillOpacity = 1;
p->attr[0].strokeOpacity = 1;
p->attr[0].strokeWidth = 1;
p->attr[0].hasFill = 0;
p->attr[0].hasStroke = 0;
p->attr[0].visible = 1;
return p;
error:
if (p) {
if (p->image) free(p->image);
free(p);
}
return NULL;
}
void nsvg__deletePaths(struct NSVGpath *path) {
while (path) {
struct NSVGpath *next = path->next;
if (path->pts != NULL) free(path->pts);
free(path);
path = next;
}
}
void nsvgDelete(struct NSVGimage *image) {
struct NSVGshape *next, *shape;
if (image == NULL) return;
shape = image->shapes;
while (shape != NULL) {
next = shape->next;
nsvg__deletePaths(shape->paths);
free(shape);
shape = next;
}
free(image);
}
void nsvg__deleteParser(struct NSVGParser *p) {
if (p != NULL) {
nsvg__deletePaths(p->plist);
nsvgDelete(p->image);
free(p->pts);
free(p);
}
}
void nsvg__resetPath(struct NSVGParser *p) { p->npts = 0; }
void nsvg__addPoint(struct NSVGParser *p, float x, float y) {
if (p->npts + 1 > p->cpts) {
p->cpts = p->cpts ? p->cpts * 2 : 8;
p->pts = (float *)realloc(p->pts, p->cpts * 2 * sizeof(float));
if (!p->pts) return;
}
p->pts[p->npts * 2 + 0] = x;
p->pts[p->npts * 2 + 1] = y;
p->npts++;
}
void nsvg__moveTo(struct NSVGParser *p, float x, float y) {
nsvg__addPoint(p, x, y);
}
void nsvg__lineTo(struct NSVGParser *p, float x, float y) {
float px, py, dx, dy;
if (p->npts > 0) {
px = p->pts[(p->npts - 1) * 2 + 0];
py = p->pts[(p->npts - 1) * 2 + 1];
dx = x - px;
dy = y - py;
nsvg__addPoint(p, px + dx / 3.0f, py + dy / 3.0f);
nsvg__addPoint(p, x - dx / 3.0f, y - dy / 3.0f);
nsvg__addPoint(p, x, y);
}
}
void nsvg__cubicBezTo(struct NSVGParser *p, float cpx1, float cpy1, float cpx2,
float cpy2, float x, float y) {
nsvg__addPoint(p, cpx1, cpy1);
nsvg__addPoint(p, cpx2, cpy2);
nsvg__addPoint(p, x, y);
}
struct NSVGAttrib *nsvg__getAttr(struct NSVGParser *p) {
return &p->attr[p->attrHead];
}
void nsvg__pushAttr(struct NSVGParser *p) {
if (p->attrHead < NSVG_MAX_ATTR - 1) {
p->attrHead++;
memcpy(&p->attr[p->attrHead], &p->attr[p->attrHead - 1],
sizeof(struct NSVGAttrib));
}
}
void nsvg__popAttr(struct NSVGParser *p) {
if (p->attrHead > 0) p->attrHead--;
}
void nsvg__addShape(struct NSVGParser *p) {
struct NSVGAttrib *attr = nsvg__getAttr(p);
float scale = 1.0f;
struct NSVGshape *shape, *cur, *prev;
if (p->plist == NULL) return;
shape = (struct NSVGshape *)malloc(sizeof(struct NSVGshape));
if (shape == NULL) goto error;
memset(shape, 0, sizeof(struct NSVGshape));
scale = nsvg__maxf(fabsf(attr->xform[0]), fabsf(attr->xform[3]));
shape->hasFill = attr->hasFill;
shape->hasStroke = attr->hasStroke;
shape->strokeWidth = attr->strokeWidth * scale;
shape->fillColor = attr->fillColor;
if (shape->hasFill)
shape->fillColor |= (unsigned int)(attr->fillOpacity * 255) << 24;
shape->strokeColor = attr->strokeColor;
if (shape->hasStroke)
shape->strokeColor |= (unsigned int)(attr->strokeOpacity * 255) << 24;
shape->paths = p->plist;
p->plist = NULL;
// Add to tail
prev = NULL;
cur = p->image->shapes;
while (cur != NULL) {
prev = cur;
cur = cur->next;
}
if (prev == NULL)
p->image->shapes = shape;
else
prev->next = shape;
return;
error:
if (shape) free(shape);
}
void nsvg__addPath(struct NSVGParser *p, char closed) {
struct NSVGAttrib *attr = nsvg__getAttr(p);
struct NSVGpath *path = NULL;
int i;
if (p->npts == 0) return;
if (closed) nsvg__lineTo(p, p->pts[0], p->pts[1]);
path = (struct NSVGpath *)malloc(sizeof(struct NSVGpath));
if (path == NULL) goto error;
memset(path, 0, sizeof(struct NSVGpath));
path->pts = (float *)malloc(p->npts * 2 * sizeof(float));
if (path->pts == NULL) goto error;
path->closed = closed;
path->npts = p->npts;
// Transform path.
for (i = 0; i < p->npts; ++i)
nsvg__xformPoint(&path->pts[i * 2], &path->pts[i * 2 + 1], p->pts[i * 2],
p->pts[i * 2 + 1], attr->xform);
path->next = p->plist;
p->plist = path;
return;
error:
if (path != NULL) {
if (path->pts != NULL) free(path->pts);
free(path);
}
}
const char *nsvg__getNextPathItem(const char *s, char *it) {
int i = 0;
it[0] = '\0';
// Skip white spaces and commas
while (*s && (nsvg__isspace(*s) || *s == ',')) s++;
if (!*s) return s;
if (*s == '-' || *s == '+' || nsvg__isdigit(*s)) {
// sign
if (*s == '-' || *s == '+') {
if (i < 63) it[i++] = *s;
s++;
}
// integer part
while (*s && nsvg__isdigit(*s)) {
if (i < 63) it[i++] = *s;
s++;
}
if (*s == '.') {
// decimal point
if (i < 63) it[i++] = *s;
s++;
// fraction part
while (*s && nsvg__isdigit(*s)) {
if (i < 63) it[i++] = *s;
s++;
}
}
// exponent
if (*s == 'e' || *s == 'E') {
if (i < 63) it[i++] = *s;
s++;
if (*s == '-' || *s == '+') {
if (i < 63) it[i++] = *s;
s++;
}
while (*s && nsvg__isdigit(*s)) {
if (i < 63) it[i++] = *s;
s++;
}
}
it[i] = '\0';
} else {
// Parse command
it[0] = *s++;
it[1] = '\0';
return s;
}
return s;
}
#define NSVG_RGB(r, g, b) \
(((unsigned int)r) | ((unsigned int)g << 8) | ((unsigned int)b << 16))
unsigned int nsvg__parseColorHex(const char *str) {
unsigned int c = 0, r = 0, g = 0, b = 0;
int n = 0;
str++; // skip #
// Calculate number of characters.
while (str[n] && !nsvg__isspace(str[n])) n++;
if (n == 6) {
sscanf(str, "%x", &c);
} else if (n == 3) {
sscanf(str, "%x", &c);
c = (c & 0xf) | ((c & 0xf0) << 4) | ((c & 0xf00) << 8);
c |= c << 4;
}
r = (c >> 16) & 0xff;
g = (c >> 8) & 0xff;
b = c & 0xff;
return NSVG_RGB(r, g, b);
}
unsigned int nsvg__parseColorRGB(const char *str) {
int r = -1, g = -1, b = -1;
char s1[32] = "", s2[32] = "";
sscanf(str + 4, "%d%[%%, \t]%d%[%%, \t]%d", &r, s1, &g, s2, &b);
if (strchr(s1, '%')) {
return NSVG_RGB((r * 255) / 100, (g * 255) / 100, (b * 255) / 100);
} else {
return NSVG_RGB(r, g, b);
}
}
struct NSVGNamedColor {
const char *name;
unsigned int color;
};
struct NSVGNamedColor nsvg__colors[] = {
{"red", NSVG_RGB(255, 0, 0)},
{"green", NSVG_RGB(0, 128, 0)},
{"blue", NSVG_RGB(0, 0, 255)},
{"yellow", NSVG_RGB(255, 255, 0)},
{"cyan", NSVG_RGB(0, 255, 255)},
{"magenta", NSVG_RGB(255, 0, 255)},
{"black", NSVG_RGB(0, 0, 0)},
{"grey", NSVG_RGB(128, 128, 128)},
{"gray", NSVG_RGB(128, 128, 128)},
{"white", NSVG_RGB(255, 255, 255)},
{"aliceblue", NSVG_RGB(240, 248, 255)},
{"antiquewhite", NSVG_RGB(250, 235, 215)},
{"aqua", NSVG_RGB(0, 255, 255)},
{"aquamarine", NSVG_RGB(127, 255, 212)},
{"azure", NSVG_RGB(240, 255, 255)},
{"beige", NSVG_RGB(245, 245, 220)},
{"bisque", NSVG_RGB(255, 228, 196)},
{"blanchedalmond", NSVG_RGB(255, 235, 205)},
{"blueviolet", NSVG_RGB(138, 43, 226)},
{"brown", NSVG_RGB(165, 42, 42)},
{"burlywood", NSVG_RGB(222, 184, 135)},
{"cadetblue", NSVG_RGB(95, 158, 160)},
{"chartreuse", NSVG_RGB(127, 255, 0)},
{"chocolate", NSVG_RGB(210, 105, 30)},
{"coral", NSVG_RGB(255, 127, 80)},
{"cornflowerblue", NSVG_RGB(100, 149, 237)},
{"cornsilk", NSVG_RGB(255, 248, 220)},
{"crimson", NSVG_RGB(220, 20, 60)},
{"darkblue", NSVG_RGB(0, 0, 139)},
{"darkcyan", NSVG_RGB(0, 139, 139)},
{"darkgoldenrod", NSVG_RGB(184, 134, 11)},
{"darkgray", NSVG_RGB(169, 169, 169)},
{"darkgreen", NSVG_RGB(0, 100, 0)},
{"darkgrey", NSVG_RGB(169, 169, 169)},
{"darkkhaki", NSVG_RGB(189, 183, 107)},
{"darkmagenta", NSVG_RGB(139, 0, 139)},
{"darkolivegreen", NSVG_RGB(85, 107, 47)},
{"darkorange", NSVG_RGB(255, 140, 0)},
{"darkorchid", NSVG_RGB(153, 50, 204)},
{"darkred", NSVG_RGB(139, 0, 0)},
{"darksalmon", NSVG_RGB(233, 150, 122)},
{"darkseagreen", NSVG_RGB(143, 188, 143)},
{"darkslateblue", NSVG_RGB(72, 61, 139)},
{"darkslategray", NSVG_RGB(47, 79, 79)},
{"darkslategrey", NSVG_RGB(47, 79, 79)},
{"darkturquoise", NSVG_RGB(0, 206, 209)},
{"darkviolet", NSVG_RGB(148, 0, 211)},
{"deeppink", NSVG_RGB(255, 20, 147)},
{"deepskyblue", NSVG_RGB(0, 191, 255)},
{"dimgray", NSVG_RGB(105, 105, 105)},
{"dimgrey", NSVG_RGB(105, 105, 105)},
{"dodgerblue", NSVG_RGB(30, 144, 255)},
{"firebrick", NSVG_RGB(178, 34, 34)},
{"floralwhite", NSVG_RGB(255, 250, 240)},
{"forestgreen", NSVG_RGB(34, 139, 34)},
{"fuchsia", NSVG_RGB(255, 0, 255)},
{"gainsboro", NSVG_RGB(220, 220, 220)},
{"ghostwhite", NSVG_RGB(248, 248, 255)},
{"gold", NSVG_RGB(255, 215, 0)},
{"goldenrod", NSVG_RGB(218, 165, 32)},
{"greenyellow", NSVG_RGB(173, 255, 47)},
{"honeydew", NSVG_RGB(240, 255, 240)},
{"hotpink", NSVG_RGB(255, 105, 180)},
{"indianred", NSVG_RGB(205, 92, 92)},
{"indigo", NSVG_RGB(75, 0, 130)},
{"ivory", NSVG_RGB(255, 255, 240)},
{"khaki", NSVG_RGB(240, 230, 140)},
{"lavender", NSVG_RGB(230, 230, 250)},
{"lavenderblush", NSVG_RGB(255, 240, 245)},
{"lawngreen", NSVG_RGB(124, 252, 0)},
{"lemonchiffon", NSVG_RGB(255, 250, 205)},
{"lightblue", NSVG_RGB(173, 216, 230)},
{"lightcoral", NSVG_RGB(240, 128, 128)},
{"lightcyan", NSVG_RGB(224, 255, 255)},
{"lightgoldenrodyellow", NSVG_RGB(250, 250, 210)},
{"lightgray", NSVG_RGB(211, 211, 211)},
{"lightgreen", NSVG_RGB(144, 238, 144)},
{"lightgrey", NSVG_RGB(211, 211, 211)},
{"lightpink", NSVG_RGB(255, 182, 193)},
{"lightsalmon", NSVG_RGB(255, 160, 122)},
{"lightseagreen", NSVG_RGB(32, 178, 170)},
{"lightskyblue", NSVG_RGB(135, 206, 250)},
{"lightslategray", NSVG_RGB(119, 136, 153)},
{"lightslategrey", NSVG_RGB(119, 136, 153)},
{"lightsteelblue", NSVG_RGB(176, 196, 222)},
{"lightyellow", NSVG_RGB(255, 255, 224)},
{"lime", NSVG_RGB(0, 255, 0)},
{"limegreen", NSVG_RGB(50, 205, 50)},
{"linen", NSVG_RGB(250, 240, 230)},
{"maroon", NSVG_RGB(128, 0, 0)},
{"mediumaquamarine", NSVG_RGB(102, 205, 170)},
{"mediumblue", NSVG_RGB(0, 0, 205)},
{"mediumorchid", NSVG_RGB(186, 85, 211)},
{"mediumpurple", NSVG_RGB(147, 112, 219)},
{"mediumseagreen", NSVG_RGB(60, 179, 113)},
{"mediumslateblue", NSVG_RGB(123, 104, 238)},
{"mediumspringgreen", NSVG_RGB(0, 250, 154)},
{"mediumturquoise", NSVG_RGB(72, 209, 204)},
{"mediumvioletred", NSVG_RGB(199, 21, 133)},
{"midnightblue", NSVG_RGB(25, 25, 112)},
{"mintcream", NSVG_RGB(245, 255, 250)},
{"mistyrose", NSVG_RGB(255, 228, 225)},
{"moccasin", NSVG_RGB(255, 228, 181)},
{"navajowhite", NSVG_RGB(255, 222, 173)},
{"navy", NSVG_RGB(0, 0, 128)},
{"oldlace", NSVG_RGB(253, 245, 230)},
{"olive", NSVG_RGB(128, 128, 0)},
{"olivedrab", NSVG_RGB(107, 142, 35)},
{"orange", NSVG_RGB(255, 165, 0)},
{"orangered", NSVG_RGB(255, 69, 0)},
{"orchid", NSVG_RGB(218, 112, 214)},
{"palegoldenrod", NSVG_RGB(238, 232, 170)},
{"palegreen", NSVG_RGB(152, 251, 152)},
{"paleturquoise", NSVG_RGB(175, 238, 238)},
{"palevioletred", NSVG_RGB(219, 112, 147)},
{"papayawhip", NSVG_RGB(255, 239, 213)},
{"peachpuff", NSVG_RGB(255, 218, 185)},
{"peru", NSVG_RGB(205, 133, 63)},
{"pink", NSVG_RGB(255, 192, 203)},
{"plum", NSVG_RGB(221, 160, 221)},
{"powderblue", NSVG_RGB(176, 224, 230)},
{"purple", NSVG_RGB(128, 0, 128)},
{"rosybrown", NSVG_RGB(188, 143, 143)},
{"royalblue", NSVG_RGB(65, 105, 225)},
{"saddlebrown", NSVG_RGB(139, 69, 19)},
{"salmon", NSVG_RGB(250, 128, 114)},
{"sandybrown", NSVG_RGB(244, 164, 96)},
{"seagreen", NSVG_RGB(46, 139, 87)},
{"seashell", NSVG_RGB(255, 245, 238)},
{"sienna", NSVG_RGB(160, 82, 45)},
{"silver", NSVG_RGB(192, 192, 192)},
{"skyblue", NSVG_RGB(135, 206, 235)},
{"slateblue", NSVG_RGB(106, 90, 205)},
{"slategray", NSVG_RGB(112, 128, 144)},
{"slategrey", NSVG_RGB(112, 128, 144)},
{"snow", NSVG_RGB(255, 250, 250)},
{"springgreen", NSVG_RGB(0, 255, 127)},
{"steelblue", NSVG_RGB(70, 130, 180)},
{"tan", NSVG_RGB(210, 180, 140)},
{"teal", NSVG_RGB(0, 128, 128)},
{"thistle", NSVG_RGB(216, 191, 216)},
{"tomato", NSVG_RGB(255, 99, 71)},
{"turquoise", NSVG_RGB(64, 224, 208)},
{"violet", NSVG_RGB(238, 130, 238)},
{"wheat", NSVG_RGB(245, 222, 179)},
{"whitesmoke", NSVG_RGB(245, 245, 245)},
{"yellowgreen", NSVG_RGB(154, 205, 50)},
};
unsigned int nsvg__parseColorName(const char *str) {
int i, ncolors = sizeof(nsvg__colors) / sizeof(struct NSVGNamedColor);
for (i = 0; i < ncolors; i++) {
if (strcmp(nsvg__colors[i].name, str) == 0) {
return nsvg__colors[i].color;
}
}
return NSVG_RGB(128, 128, 128);
}
unsigned int nsvg__parseColor(const char *str) {
int len = 0;
while (*str == ' ') ++str;
len = (int)strlen(str);
if (len >= 1 && *str == '#')
return nsvg__parseColorHex(str);
else if (len >= 4 && str[0] == 'r' && str[1] == 'g' && str[2] == 'b' &&
str[3] == '(')
return nsvg__parseColorRGB(str);
return nsvg__parseColorName(str);
}
float nsvg__parseFloat(const char *str) {
while (*str == ' ') ++str;
return (float)atof(str);
}
int nsvg__parseTransformArgs(const char *str, float *args, int maxNa, int *na) {
const char *end;
const char *ptr;
*na = 0;
ptr = str;
while (*ptr && *ptr != '(') ++ptr;
if (*ptr == 0) return 1;
end = ptr;
while (*end && *end != ')') ++end;
if (*end == 0) return 1;
while (ptr < end) {
if (nsvg__isnum(*ptr)) {
if (*na >= maxNa) return 0;
args[(*na)++] = (float)atof(ptr);
while (ptr < end && nsvg__isnum(*ptr)) ++ptr;
} else {
++ptr;
}
}
return (int)(end - str);
}
int nsvg__parseMatrix(struct NSVGParser *p, const char *str) {
float t[6];
int na = 0;
int len = nsvg__parseTransformArgs(str, t, 6, &na);
if (na != 6) return len;
nsvg__xformPremultiply(nsvg__getAttr(p)->xform, t);
return len;
}
int nsvg__parseTranslate(struct NSVGParser *p, const char *str) {
float args[2];
float t[6];
int na = 0;
int len = nsvg__parseTransformArgs(str, args, 2, &na);
if (na == 1) args[1] = 0.0;
nsvg__xformSetTranslation(t, args[0], args[1]);
nsvg__xformPremultiply(nsvg__getAttr(p)->xform, t);
return len;
}
int nsvg__parseScale(struct NSVGParser *p, const char *str) {
float args[2];
int na = 0;
float t[6];
int len = nsvg__parseTransformArgs(str, args, 2, &na);
if (na == 1) args[1] = args[0];
nsvg__xformSetScale(t, args[0], args[1]);
nsvg__xformPremultiply(nsvg__getAttr(p)->xform, t);
return len;
}
int nsvg__parseSkewX(struct NSVGParser *p, const char *str) {
float args[1];
int na = 0;
float t[6];
int len = nsvg__parseTransformArgs(str, args, 1, &na);
nsvg__xformSetSkewX(t, args[0] / 180.0f * NSVG_PI);
nsvg__xformPremultiply(nsvg__getAttr(p)->xform, t);
return len;
}
int nsvg__parseSkewY(struct NSVGParser *p, const char *str) {
float args[1];
int na = 0;
float t[6];
int len = nsvg__parseTransformArgs(str, args, 1, &na);
nsvg__xformSetSkewY(t, args[0] / 180.0f * NSVG_PI);
nsvg__xformPremultiply(nsvg__getAttr(p)->xform, t);
return len;
}
int nsvg__parseRotate(struct NSVGParser *p, const char *str) {
float args[3];
int na = 0;
float t[6];
int len = nsvg__parseTransformArgs(str, args, 3, &na);
if (na == 1) args[1] = args[2] = 0.0f;
if (na > 1) {
nsvg__xformSetTranslation(t, -args[1], -args[2]);
nsvg__xformPremultiply(nsvg__getAttr(p)->xform, t);
}
nsvg__xformSetRotation(t, args[0] / 180.0f * NSVG_PI);
nsvg__xformPremultiply(nsvg__getAttr(p)->xform, t);
if (na > 1) {
nsvg__xformSetTranslation(t, args[1], args[2]);
nsvg__xformPremultiply(nsvg__getAttr(p)->xform, t);
}
return len;
}
void nsvg__parseTransform(struct NSVGParser *p, const char *str) {
while (*str) {
if (strncmp(str, "matrix", 6) == 0)
str += nsvg__parseMatrix(p, str);
else if (strncmp(str, "translate", 9) == 0)
str += nsvg__parseTranslate(p, str);
else if (strncmp(str, "scale", 5) == 0)
str += nsvg__parseScale(p, str);
else if (strncmp(str, "rotate", 6) == 0)
str += nsvg__parseRotate(p, str);
else if (strncmp(str, "skewX", 5) == 0)
str += nsvg__parseSkewX(p, str);
else if (strncmp(str, "skewY", 5) == 0)
str += nsvg__parseSkewY(p, str);
else
++str;
}
}
void nsvg__parseStyle(struct NSVGParser *p, const char *str);
int nsvg__parseAttr(struct NSVGParser *p, const char *name, const char *value) {
struct NSVGAttrib *attr = nsvg__getAttr(p);
if (!attr) return 0;
if (strcmp(name, "style") == 0) {
nsvg__parseStyle(p, value);
} else if (strcmp(name, "display") == 0) {
if (strcmp(value, "none") == 0)
attr->visible = 0;
else
attr->visible = 1;
} else if (strcmp(name, "fill") == 0) {
if (strcmp(value, "none") == 0) {
attr->hasFill = 0;
} else {
attr->hasFill = 1;
attr->fillColor = nsvg__parseColor(value);
}
} else if (strcmp(name, "fill-opacity") == 0) {
attr->fillOpacity = nsvg__parseFloat(value);
} else if (strcmp(name, "stroke") == 0) {
if (strcmp(value, "none") == 0) {
attr->hasStroke = 0;
} else {
attr->hasStroke = 1;
attr->strokeColor = nsvg__parseColor(value);
}
} else if (strcmp(name, "stroke-width") == 0) {
attr->strokeWidth = nsvg__parseFloat(value);
} else if (strcmp(name, "stroke-opacity") == 0) {
attr->strokeOpacity = nsvg__parseFloat(value);
} else if (strcmp(name, "transform") == 0) {
nsvg__parseTransform(p, value);
} else {
return 0;
}
return 1;
}
int nsvg__parseNameValue(struct NSVGParser *p, const char *start,
const char *end) {
const char *str;
const char *val;
char name[512];
char value[512];
int n;
str = start;
while (str < end && *str != ':') ++str;
val = str;
// Right Trim
while (str > start && (*str == ':' || nsvg__isspace(*str))) --str;
++str;
n = (int)(str - start);
if (n > 511) n = 511;
if (n) memcpy(name, start, n);
name[n] = 0;
while (val < end && (*val == ':' || nsvg__isspace(*val))) ++val;
n = (int)(end - val);
if (n > 511) n = 511;
if (n) memcpy(value, val, n);
value[n] = 0;
return nsvg__parseAttr(p, name, value);
}
void nsvg__parseStyle(struct NSVGParser *p, const char *str) {
const char *start;
const char *end;
while (*str) {
// Left Trim
while (*str && nsvg__isspace(*str)) ++str;
start = str;
while (*str && *str != ';') ++str;
end = str;
// Right Trim
while (end > start && (*end == ';' || nsvg__isspace(*end))) --end;
++end;
nsvg__parseNameValue(p, start, end);
if (*str) ++str;
}
}
void nsvg__parseAttribs(struct NSVGParser *p, const char **attr) {
int i;
for (i = 0; attr[i]; i += 2) {
if (strcmp(attr[i], "style") == 0)
nsvg__parseStyle(p, attr[i + 1]);
else
nsvg__parseAttr(p, attr[i], attr[i + 1]);
}
}
int nsvg__getArgsPerElement(char cmd) {
switch (cmd) {
case 'v':
case 'V':
case 'h':
case 'H':
return 1;
case 'm':
case 'M':
case 'l':
case 'L':
case 't':
case 'T':
return 2;
case 'q':
case 'Q':
case 's':
case 'S':
return 4;
case 'c':
case 'C':
return 6;
case 'a':
case 'A':
return 7;
}
return 0;
}
void nsvg__pathMoveTo(struct NSVGParser *p, float *cpx, float *cpy, float *args,
int rel) {
if (rel) {
*cpx += args[0];
*cpy += args[1];
} else {
*cpx = args[0];
*cpy = args[1];
}
nsvg__moveTo(p, *cpx, *cpy);
}
void nsvg__pathLineTo(struct NSVGParser *p, float *cpx, float *cpy, float *args,
int rel) {
if (rel) {
*cpx += args[0];
*cpy += args[1];
} else {
*cpx = args[0];
*cpy = args[1];
}
nsvg__lineTo(p, *cpx, *cpy);
}
void nsvg__pathHLineTo(struct NSVGParser *p, float *cpx, float *cpy,
float *args, int rel) {
if (rel)
*cpx += args[0];
else
*cpx = args[0];
nsvg__lineTo(p, *cpx, *cpy);
}
void nsvg__pathVLineTo(struct NSVGParser *p, float *cpx, float *cpy,
float *args, int rel) {
if (rel)
*cpy += args[0];
else
*cpy = args[0];
nsvg__lineTo(p, *cpx, *cpy);
}
void nsvg__pathCubicBezTo(struct NSVGParser *p, float *cpx, float *cpy,
float *cpx2, float *cpy2, float *args, int rel) {
float x1, y1, x2, y2, cx1, cy1, cx2, cy2;
x1 = *cpx;
y1 = *cpy;
if (rel) {
cx1 = *cpx + args[0];
cy1 = *cpy + args[1];
cx2 = *cpx + args[2];
cy2 = *cpy + args[3];
x2 = *cpx + args[4];
y2 = *cpy + args[5];
} else {
cx1 = args[0];
cy1 = args[1];
cx2 = args[2];
cy2 = args[3];
x2 = args[4];
y2 = args[5];
}
nsvg__cubicBezTo(p, cx1, cy1, cx2, cy2, x2, y2);
*cpx2 = cx2;
*cpy2 = cy2;
*cpx = x2;
*cpy = y2;
}
void nsvg__pathCubicBezShortTo(struct NSVGParser *p, float *cpx, float *cpy,
float *cpx2, float *cpy2, float *args, int rel) {
float x1, y1, x2, y2, cx1, cy1, cx2, cy2;
x1 = *cpx;
y1 = *cpy;
if (rel) {
cx2 = *cpx + args[0];
cy2 = *cpy + args[1];
x2 = *cpx + args[2];
y2 = *cpy + args[3];
} else {
cx2 = args[0];
cy2 = args[1];
x2 = args[2];
y2 = args[3];
}
cx1 = 2 * x1 - *cpx2;
cy1 = 2 * y1 - *cpy2;
nsvg__cubicBezTo(p, cx1, cy1, cx2, cy2, x2, y2);
*cpx2 = cx2;
*cpy2 = cy2;
*cpx = x2;
*cpy = y2;
}
void nsvg__pathQuadBezTo(struct NSVGParser *p, float *cpx, float *cpy,
float *cpx2, float *cpy2, float *args, int rel) {
float x1, y1, x2, y2, cx, cy;
float cx1, cy1, cx2, cy2;
x1 = *cpx;
y1 = *cpy;
if (rel) {
cx = *cpx + args[0];
cy = *cpy + args[1];
x2 = *cpx + args[2];
y2 = *cpy + args[3];
} else {
cx = args[0];
cy = args[1];
x2 = args[2];
y2 = args[3];
}
// Convert to cubix bezier
cx1 = x1 + 2.0f / 3.0f * (cx - x1);
cy1 = y1 + 2.0f / 3.0f * (cy - y1);
cx2 = x2 + 2.0f / 3.0f * (cx - x2);
cy2 = y2 + 2.0f / 3.0f * (cy - y2);
nsvg__cubicBezTo(p, cx1, cy1, cx2, cy2, x2, y2);
*cpx2 = cx;
*cpy2 = cy;
*cpx = x2;
*cpy = y2;
}
void nsvg__pathQuadBezShortTo(struct NSVGParser *p, float *cpx, float *cpy,
float *cpx2, float *cpy2, float *args, int rel) {
float x1, y1, x2, y2, cx, cy;
float cx1, cy1, cx2, cy2;
x1 = *cpx;
y1 = *cpy;
if (rel) {
x2 = *cpx + args[0];
y2 = *cpy + args[1];
} else {
x2 = args[0];
y2 = args[1];
}
cx = 2 * x1 - *cpx2;
cy = 2 * y1 - *cpy2;
// Convert to cubix bezier
cx1 = x1 + 2.0f / 3.0f * (cx - x1);
cy1 = y1 + 2.0f / 3.0f * (cy - y1);
cx2 = x2 + 2.0f / 3.0f * (cx - x2);
cy2 = y2 + 2.0f / 3.0f * (cy - y2);
nsvg__cubicBezTo(p, cx1, cy1, cx2, cy2, x2, y2);
*cpx2 = cx;
*cpy2 = cy;
*cpx = x2;
*cpy = y2;
}
float nsvg__sqr(float x) { return x * x; }
float nsvg__vmag(float x, float y) { return sqrtf(x * x + y * y); }
float nsvg__vecrat(float ux, float uy, float vx, float vy) {
return (ux * vx + uy * vy) / (nsvg__vmag(ux, uy) * nsvg__vmag(vx, vy));
}
float nsvg__vecang(float ux, float uy, float vx, float vy) {
float r = nsvg__vecrat(ux, uy, vx, vy);
if (r < -1.0f) r = -1.0f;
if (r > 1.0f) r = 1.0f;
return ((ux * vy < uy * vx) ? -1.0f : 1.0f) * acosf(r);
}
void nsvg__pathArcTo(struct NSVGParser *p, float *cpx, float *cpy, float *args,
int rel) {
// Ported from canvg (https://code.google.com/p/canvg/)
float rx, ry, rotx;
float x1, y1, x2, y2, cx, cy, dx, dy, d;
float x1p, y1p, cxp, cyp, s, sa, sb;
float ux, uy, vx, vy, a1, da;
float x, y, tanx, tany, a, px, py, ptanx, ptany, t[6];
float sinrx, cosrx;
int fa, fs;
int i, ndivs;
float hda, kappa;
rx = fabsf(args[0]); // y radius
ry = fabsf(args[1]); // x radius
rotx = args[2] / 180.0f * NSVG_PI; // x rotation engle
fa = fabsf(args[3]) > 1e-6 ? 1 : 0; // Large arc
fs = fabsf(args[4]) > 1e-6 ? 1 : 0; // Sweep direction
x1 = *cpx; // start point
y1 = *cpy;
if (rel) { // end point
x2 = *cpx + args[5];
y2 = *cpy + args[6];
} else {
x2 = args[5];
y2 = args[6];
}
dx = x1 - x2;
dy = y1 - y2;
d = sqrtf(dx * dx + dy * dy);
if (d < 1e-6f || rx < 1e-6f || ry < 1e-6f) {
// The arc degenerates to a line
nsvg__lineTo(p, x2, y2);
*cpx = x2;
*cpy = y2;
return;
}
sinrx = sinf(rotx);
cosrx = cosf(rotx);
// Convert to center point parameterization.
// http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
// 1) Compute x1', y1'
x1p = cosrx * dx / 2.0f + sinrx * dy / 2.0f;
y1p = -sinrx * dx / 2.0f + cosrx * dy / 2.0f;
d = nsvg__sqr(x1p) / nsvg__sqr(rx) + nsvg__sqr(y1p) / nsvg__sqr(ry);
if (d > 1) {
d = sqrtf(d);
rx *= d;
ry *= d;
}
// 2) Compute cx', cy'
s = 0.0f;
sa = nsvg__sqr(rx) * nsvg__sqr(ry) - nsvg__sqr(rx) * nsvg__sqr(y1p) -
nsvg__sqr(ry) * nsvg__sqr(x1p);
sb = nsvg__sqr(rx) * nsvg__sqr(y1p) + nsvg__sqr(ry) * nsvg__sqr(x1p);
if (sa < 0.0f) sa = 0.0f;
if (sb > 0.0f) s = sqrtf(sa / sb);
if (fa == fs) s = -s;
cxp = s * rx * y1p / ry;
cyp = s * -ry * x1p / rx;
// 3) Compute cx,cy from cx',cy'
cx = (x1 + x2) / 2.0f + cosrx * cxp - sinrx * cyp;
cy = (y1 + y2) / 2.0f + sinrx * cxp + cosrx * cyp;
// 4) Calculate theta1, and delta theta.
ux = (x1p - cxp) / rx;
uy = (y1p - cyp) / ry;
vx = (-x1p - cxp) / rx;
vy = (-y1p - cyp) / ry;
a1 = nsvg__vecang(1.0f, 0.0f, ux, uy); // Initial angle
da = nsvg__vecang(ux, uy, vx, vy); // Delta angle
// if (vecrat(ux,uy,vx,vy) <= -1.0f) da = NSVG_PI;
// if (vecrat(ux,uy,vx,vy) >= 1.0f) da = 0;
if (fa) {
// Choose large arc
if (da > 0.0f)
da = da - 2 * NSVG_PI;
else
da = 2 * NSVG_PI + da;
}
// Approximate the arc using cubic spline segments.
t[0] = cosrx;
t[1] = sinrx;
t[2] = -sinrx;
t[3] = cosrx;
t[4] = cx;
t[5] = cy;
// Split arc into max 90 degree segments.
ndivs = (int)(fabsf(da) / (NSVG_PI * 0.5f) + 0.5f);
hda = (da / (float)ndivs) / 2.0f;
kappa = fabsf(4.0f / 3.0f * (1.0f - cosf(hda)) / sinf(hda));
if (da < 0.0f) kappa = -kappa;
for (i = 0; i <= ndivs; i++) {
a = a1 + da * (i / (float)ndivs);
dx = cosf(a);
dy = sinf(a);
nsvg__xformPoint(&x, &y, dx * rx, dy * ry, t); // position
nsvg__xformVec(&tanx, &tany, -dy * rx * kappa, dx * ry * kappa,
t); // tangent
if (i > 0)
nsvg__cubicBezTo(p, px + ptanx, py + ptany, x - tanx, y - tany, x, y);
px = x;
py = y;
ptanx = tanx;
ptany = tany;
}
*cpx = x2;
*cpy = y2;
}
void nsvg__parsePath(struct NSVGParser *p, const char **attr) {
const char *s;
char cmd;
float args[10];
int nargs;
int rargs;
float cpx, cpy, cpx2, cpy2;
const char *tmp[4];
char closedFlag;
int i;
char item[64];
for (i = 0; attr[i]; i += 2) {
if (strcmp(attr[i], "d") == 0) {
s = attr[i + 1];
nsvg__resetPath(p);
cpx = 0;
cpy = 0;
closedFlag = 0;
nargs = 0;
while (*s) {
s = nsvg__getNextPathItem(s, item);
if (!*item) break;
if (nsvg__isnum(item[0])) {
if (nargs < 10) args[nargs++] = (float)atof(item);
if (nargs >= rargs) {
switch (cmd) {
case 'm':
case 'M':
nsvg__pathMoveTo(p, &cpx, &cpy, args, cmd == 'm' ? 1 : 0);
// Moveto can be followed by multiple coordinate pairs,
// which should be treated as linetos.
cmd = (cmd == 'm') ? 'l' : 'L';
rargs = nsvg__getArgsPerElement(cmd);
break;
case 'l':
case 'L':
nsvg__pathLineTo(p, &cpx, &cpy, args, cmd == 'l' ? 1 : 0);
break;
case 'H':
case 'h':
nsvg__pathHLineTo(p, &cpx, &cpy, args, cmd == 'h' ? 1 : 0);
break;
case 'V':
case 'v':
nsvg__pathVLineTo(p, &cpx, &cpy, args, cmd == 'v' ? 1 : 0);
break;
case 'C':
case 'c':
nsvg__pathCubicBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args,
cmd == 'c' ? 1 : 0);
break;
case 'S':
case 's':
nsvg__pathCubicBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args,
cmd == 's' ? 1 : 0);
break;
case 'Q':
case 'q':
nsvg__pathQuadBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args,
cmd == 'q' ? 1 : 0);
break;
case 'T':
case 't':
nsvg__pathQuadBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args,
cmd == 's' ? 1 : 0);
break;
case 'A':
case 'a':
nsvg__pathArcTo(p, &cpx, &cpy, args, cmd == 'a' ? 1 : 0);
break;
default:
if (nargs >= 2) {
cpx = args[nargs - 2];
cpy = args[nargs - 1];
}
break;
}
nargs = 0;
}
} else {
cmd = item[0];
rargs = nsvg__getArgsPerElement(cmd);
if (cmd == 'M' || cmd == 'm') {
// Commit path.
if (p->npts > 0) nsvg__addPath(p, closedFlag);
// Start new subpath.
nsvg__resetPath(p);
closedFlag = 0;
nargs = 0;
} else if (cmd == 'Z' || cmd == 'z') {
closedFlag = 1;
// Commit path.
if (p->npts > 0) nsvg__addPath(p, closedFlag);
// Start new subpath.
nsvg__resetPath(p);
closedFlag = 0;
nargs = 0;
}
}
}
// Commit path.
if (p->npts) nsvg__addPath(p, closedFlag);
} else {
tmp[0] = attr[i];
tmp[1] = attr[i + 1];
tmp[2] = 0;
tmp[3] = 0;
nsvg__parseAttribs(p, tmp);
}
}
nsvg__addShape(p);
}
void nsvg__parseRect(struct NSVGParser *p, const char **attr) {
float x = 0.0f;
float y = 0.0f;
float w = 0.0f;
float h = 0.0f;
float rx = -1.0f; // marks not set
float ry = -1.0f;
int i;
for (i = 0; attr[i]; i += 2) {
if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
if (strcmp(attr[i], "x") == 0) x = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "y") == 0) y = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "width") == 0) w = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "height") == 0) h = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "rx") == 0) rx = fabsf(nsvg__parseFloat(attr[i + 1]));
if (strcmp(attr[i], "ry") == 0) ry = fabsf(nsvg__parseFloat(attr[i + 1]));
}
}
if (rx < 0.0f && ry > 0.0f) rx = ry;
if (ry < 0.0f && rx > 0.0f) ry = rx;
if (rx < 0.0f) rx = 0.0f;
if (ry < 0.0f) ry = 0.0f;
if (rx > w / 2.0f) rx = w / 2.0f;
if (ry > h / 2.0f) ry = h / 2.0f;
if (w != 0.0f && h != 0.0f) {
nsvg__resetPath(p);
if (rx < 0.00001f || ry < 0.0001f) {
nsvg__moveTo(p, x, y);
nsvg__lineTo(p, x + w, y);
nsvg__lineTo(p, x + w, y + h);
nsvg__lineTo(p, x, y + h);
} else {
// Rounded rectangle
nsvg__moveTo(p, x + rx, y);
nsvg__lineTo(p, x + w - rx, y);
nsvg__cubicBezTo(p, x + w - rx * (1 - NSVG_KAPPA90), y, x + w,
y + ry * (1 - NSVG_KAPPA90), x + w, y + ry);
nsvg__lineTo(p, x + w, y + h - ry);
nsvg__cubicBezTo(p, x + w, y + h - ry * (1 - NSVG_KAPPA90),
x + w - rx * (1 - NSVG_KAPPA90), y + h, x + w - rx,
y + h);
nsvg__lineTo(p, x + rx, y + h);
nsvg__cubicBezTo(p, x + rx * (1 - NSVG_KAPPA90), y + h, x,
y + h - ry * (1 - NSVG_KAPPA90), x, y + h - ry);
nsvg__lineTo(p, x, y + ry);
nsvg__cubicBezTo(p, x, y + ry * (1 - NSVG_KAPPA90),
x + rx * (1 - NSVG_KAPPA90), y, x + rx, y);
}
nsvg__addPath(p, 1);
nsvg__addShape(p);
}
}
void nsvg__parseCircle(struct NSVGParser *p, const char **attr) {
float cx = 0.0f;
float cy = 0.0f;
float r = 0.0f;
int i;
for (i = 0; attr[i]; i += 2) {
if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
if (strcmp(attr[i], "cx") == 0) cx = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "cy") == 0) cy = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "r") == 0) r = fabsf(nsvg__parseFloat(attr[i + 1]));
}
}
if (r > 0.0f) {
nsvg__resetPath(p);
nsvg__moveTo(p, cx + r, cy);
nsvg__cubicBezTo(p, cx + r, cy + r * NSVG_KAPPA90, cx + r * NSVG_KAPPA90,
cy + r, cx, cy + r);
nsvg__cubicBezTo(p, cx - r * NSVG_KAPPA90, cy + r, cx - r,
cy + r * NSVG_KAPPA90, cx - r, cy);
nsvg__cubicBezTo(p, cx - r, cy - r * NSVG_KAPPA90, cx - r * NSVG_KAPPA90,
cy - r, cx, cy - r);
nsvg__cubicBezTo(p, cx + r * NSVG_KAPPA90, cy - r, cx + r,
cy - r * NSVG_KAPPA90, cx + r, cy);
nsvg__addPath(p, 1);
nsvg__addShape(p);
}
}
void nsvg__parseEllipse(struct NSVGParser *p, const char **attr) {
float cx = 0.0f;
float cy = 0.0f;
float rx = 0.0f;
float ry = 0.0f;
int i;
for (i = 0; attr[i]; i += 2) {
if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
if (strcmp(attr[i], "cx") == 0) cx = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "cy") == 0) cy = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "rx") == 0) rx = fabsf(nsvg__parseFloat(attr[i + 1]));
if (strcmp(attr[i], "ry") == 0) ry = fabsf(nsvg__parseFloat(attr[i + 1]));
}
}
if (rx > 0.0f && ry > 0.0f) {
nsvg__resetPath(p);
nsvg__moveTo(p, cx + rx, cy);
nsvg__cubicBezTo(p, cx + rx, cy + ry * NSVG_KAPPA90, cx + rx * NSVG_KAPPA90,
cy + ry, cx, cy + ry);
nsvg__cubicBezTo(p, cx - rx * NSVG_KAPPA90, cy + ry, cx - rx,
cy + ry * NSVG_KAPPA90, cx - rx, cy);
nsvg__cubicBezTo(p, cx - rx, cy - ry * NSVG_KAPPA90, cx - rx * NSVG_KAPPA90,
cy - ry, cx, cy - ry);
nsvg__cubicBezTo(p, cx + rx * NSVG_KAPPA90, cy - ry, cx + rx,
cy - ry * NSVG_KAPPA90, cx + rx, cy);
nsvg__addPath(p, 1);
nsvg__addShape(p);
}
}
void nsvg__parseLine(struct NSVGParser *p, const char **attr) {
float x1 = 0.0;
float y1 = 0.0;
float x2 = 0.0;
float y2 = 0.0;
int i;
for (i = 0; attr[i]; i += 2) {
if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
if (strcmp(attr[i], "x1") == 0) x1 = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "y1") == 0) y1 = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "x2") == 0) x2 = nsvg__parseFloat(attr[i + 1]);
if (strcmp(attr[i], "y2") == 0) y2 = nsvg__parseFloat(attr[i + 1]);
}
}
nsvg__resetPath(p);
nsvg__moveTo(p, x1, y1);
nsvg__lineTo(p, x2, y2);
nsvg__addPath(p, 0);
nsvg__addShape(p);
}
void nsvg__parsePoly(struct NSVGParser *p, const char **attr, int closeFlag) {
int i;
const char *s;
float args[2];
int nargs, npts = 0;
char item[64];
nsvg__resetPath(p);
for (i = 0; attr[i]; i += 2) {
if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
if (strcmp(attr[i], "points") == 0) {
s = attr[i + 1];
nargs = 0;
while (*s) {
s = nsvg__getNextPathItem(s, item);
args[nargs++] = (float)atof(item);
if (nargs >= 2) {
if (npts == 0)
nsvg__moveTo(p, args[0], args[1]);
else
nsvg__lineTo(p, args[0], args[1]);
nargs = 0;
npts++;
}
}
}
}
}
nsvg__addPath(p, (char)closeFlag);
nsvg__addShape(p);
}
void nsvg__parseSVG(struct NSVGParser *p, const char **attr) {
int i;
for (i = 0; attr[i]; i += 2) {
if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
if (strcmp(attr[i], "width") == 0) {
p->image->wunits[0] = '\0';
sscanf(attr[i + 1], "%f%s", &p->image->width, p->image->wunits);
} else if (strcmp(attr[i], "height") == 0) {
p->image->hunits[0] = '\0';
sscanf(attr[i + 1], "%f%s", &p->image->height, p->image->hunits);
}
}
}
}
void nsvg__startElement(void *ud, const char *el, const char **attr) {
struct NSVGParser *p = (struct NSVGParser *)ud;
// Skip everything in defs
if (p->defsFlag) return;
if (strcmp(el, "g") == 0) {
nsvg__pushAttr(p);
nsvg__parseAttribs(p, attr);
} else if (strcmp(el, "path") == 0) {
if (p->pathFlag) // Do not allow nested paths.
return;
nsvg__pushAttr(p);
nsvg__parsePath(p, attr);
nsvg__popAttr(p);
} else if (strcmp(el, "rect") == 0) {
nsvg__pushAttr(p);
nsvg__parseRect(p, attr);
nsvg__popAttr(p);
} else if (strcmp(el, "circle") == 0) {
nsvg__pushAttr(p);
nsvg__parseCircle(p, attr);
nsvg__popAttr(p);
} else if (strcmp(el, "ellipse") == 0) {
nsvg__pushAttr(p);
nsvg__parseEllipse(p, attr);
nsvg__popAttr(p);
} else if (strcmp(el, "line") == 0) {
nsvg__pushAttr(p);
nsvg__parseLine(p, attr);
nsvg__popAttr(p);
} else if (strcmp(el, "polyline") == 0) {
nsvg__pushAttr(p);
nsvg__parsePoly(p, attr, 0);
nsvg__popAttr(p);
} else if (strcmp(el, "polygon") == 0) {
nsvg__pushAttr(p);
nsvg__parsePoly(p, attr, 1);
nsvg__popAttr(p);
} else if (strcmp(el, "defs") == 0) {
p->defsFlag = 1;
} else if (strcmp(el, "svg") == 0) {
nsvg__parseSVG(p, attr);
}
}
void nsvg__endElement(void *ud, const char *el) {
struct NSVGParser *p = (struct NSVGParser *)ud;
if (strcmp(el, "g") == 0) {
nsvg__popAttr(p);
} else if (strcmp(el, "path") == 0) {
p->pathFlag = 0;
} else if (strcmp(el, "defs") == 0) {
p->defsFlag = 0;
}
}
void nsvg__content(void *ud, const char *s) {
// empty
}
void dump(struct NSVGimage *image) {
struct NSVGshape *shape;
if (image == NULL) return;
shape = image->shapes;
while (shape != NULL) {
struct NSVGpath *path;
path = shape->paths;
while (path) path = path->next;
shape = shape->next;
}
}
struct NSVGimage *nsvgParse(char *input) {
struct NSVGParser *p;
struct NSVGimage *ret = 0;
p = nsvg__createParser();
if (p == NULL) {
return NULL;
}
nsvg__parseXML(input, nsvg__startElement, nsvg__endElement, nsvg__content, p);
ret = p->image;
p->image = NULL;
dump(ret);
nsvg__deleteParser(p);
return ret;
}
struct NSVGimage *nsvgParseFromFile(const char *filename) {
FILE *fp = NULL;
int size;
char *data = NULL;
struct NSVGimage *image = NULL;
fp = fopen(filename, "rb");
if (!fp) goto error;
fseek(fp, 0, SEEK_END);
size = ftell(fp);
fseek(fp, 0, SEEK_SET);
data = (char *)malloc(size + 1);
if (data == NULL) goto error;
fread(data, size, 1, fp);
data[size] = '\0'; // Must be null terminated.
fclose(fp);
image = nsvgParse(data);
free(data);
return image;
error:
if (fp) fclose(fp);
if (data) free(data);
if (image) nsvgDelete(image);
return NULL;
}
} // namespace svg_parser
//=------------------------------------------------------------------------------------------------------------------------------
//=------------------------------------------------------------------------------------------------------------------------------
//=------------------------------------------------------------------------------------------------------------------------------
//=------------------------------------------------------------------------------------------------------------------------------
class TImageWriterSvg final : public TImageWriter {
public:
TImageWriterSvg(const TFilePath &, TPropertyGroup *);
~TImageWriterSvg() {}
private:
// double m_maxThickness;
// not implemented
TImageWriterSvg(const TImageWriterSvg &);
TImageWriterSvg &operator=(const TImageWriterSvg &src);
public:
void save(const TImageP &) override;
};
//-----------------------------------------------------------------------------
class TImageReaderSvg final : public TImageReader {
TLevelP m_level;
public:
TImageReaderSvg(const TFilePath &path, TLevelP &level)
: TImageReader(path), m_level(level) {}
TImageP load() override;
};
TImageWriterP TLevelWriterSvg::getFrameWriter(TFrameId fid) {
TImageWriterSvg *iwm =
new TImageWriterSvg(m_path.withFrame(fid), getProperties());
return TImageWriterP(iwm);
}
//-----------------------------------------------------------------------------
TImageWriterSvg::TImageWriterSvg(const TFilePath &f, TPropertyGroup *prop)
: TImageWriter(f)
//, m_maxThickness(0)
{
setProperties(prop);
}
//-----------------------------------------------------------------------------
TLevelWriterSvg::TLevelWriterSvg(const TFilePath &path, TPropertyGroup *winfo)
: TLevelWriter(path, winfo)
//, m_pli (0)
//, m_frameNumber (0)
{}
//-----------------------------------------------------------------------------
static void writeRegion(TRegion *r, TPalette *plt, QTextStream &out, double ly) {
if (r->getEdgeCount() == 0) return;
std::vector<const TQuadratic *> quadsOutline;
for (int i = 0; i < (int)r->getEdgeCount(); i++) {
TEdge *e = r->getEdge(i);
TStroke *s = e->m_s;
int index0, index1;
double t0, t1;
double w0 = e->m_w0, w1 = e->m_w1;
if (w0 > w1) {
TStroke *s1 = new TStroke(*s);
s1->changeDirection();
double totalLength = s->getLength();
w0 = s1->getParameterAtLength(totalLength - s->getLength(w0));
w1 = s1->getParameterAtLength(totalLength - s->getLength(w1));
s = s1;
assert(w0 <= w1);
}
s->getChunkAndT(w0, index0, t0);
s->getChunkAndT(w1, index1, t1);
for (int j = index0; j <= index1; j++) {
const TQuadratic *q = s->getChunk(j);
if (j == index0 && t0 != 0) {
TQuadratic q1, *q2 = new TQuadratic();
q->split(t0, q1, *q2);
q = q2;
}
if (j == index1 && t1 != 1) {
TQuadratic *q1 = new TQuadratic(), q2;
q->split(t1, *q1, q2);
q = q1;
}
quadsOutline.push_back(q);
}
}
if (quadsOutline.empty()) return;
out << "<path \n";
TPixel32 col = plt->getStyle(r->getStyle())->getMainColor();
if (col == TPixel::Transparent) col == TPixel::White;
out << "style=\"fill:rgb(" << col.r << "," << col.g << "," << col.b
<< ")\" \n";
out << "d=\"M " << quadsOutline[0]->getP0().x << " "
<< ly - quadsOutline[0]->getP0().y << "\n";
for (int i = 0; i < quadsOutline.size(); i++)
out << "Q " << quadsOutline[i]->getP1().x << ","
<< ly - quadsOutline[i]->getP1().y << "," << quadsOutline[i]->getP2().x
<< "," << ly - quadsOutline[i]->getP2().y << "\n";
out << " \" /> \n";
for (int i = 0; i < (int)r->getSubregionCount(); i++)
writeRegion(r->getSubregion(i), plt, out, ly);
}
//--------------------------------------------------------------------------------------
static void writeOutlineStroke(TStroke *s, TPalette *plt, QTextStream &out, double ly,
double quality) {
if (s->getChunkCount() == 0) return;
if (s->getMaxThickness() == 0) return;
std::vector<TQuadratic *> quadsOutline;
computeOutlines(s, 0, s->getChunkCount() - 1, quadsOutline, quality);
if (quadsOutline.empty()) return;
out << "<path \n";
TPixel32 col = plt->getStyle(s->getStyle())->getMainColor();
out << "style=\"fill:rgb(" << col.r << "," << col.g << "," << col.b
<< ")\" \n";
out << "d=\"M " << quadsOutline[0]->getP0().x << " "
<< ly - quadsOutline[0]->getP0().y << "\n";
for (int i = 0; i < quadsOutline.size(); i++)
out << "Q " << quadsOutline[i]->getP1().x << ","
<< ly - quadsOutline[i]->getP1().y << "," << quadsOutline[i]->getP2().x
<< "," << ly - quadsOutline[i]->getP2().y << "\n";
out << " \" /> \n";
}
//----------------------------------------------------------
static double computeAverageThickness(const TStroke *s) {
int count = s->getControlPointCount();
double resThick = 0;
for (int i = 0; i < s->getControlPointCount(); i++) {
double thick = s->getControlPoint(i).thick;
if (i >= 2 && i < s->getControlPointCount() - 2) resThick += thick;
}
if (count < 6) return s->getControlPoint(count / 2 + 1).thick;
return resThick / (s->getControlPointCount() - 4);
}
//----------------------------------------------------------------
static void writeCenterlineStroke(TStroke *s, TPalette *plt, QTextStream &out,
double ly) {
if (s->getChunkCount() == 0) return;
if (s->getMaxThickness() == 0) return;
double thick = 2 * computeAverageThickness(s);
out << "<path \n";
TPixel32 col = plt->getStyle(s->getStyle())->getMainColor();
out << "style=\"stroke:rgb(" << col.r << "," << col.g << "," << col.b
<< ")\" stroke-width=\"" << thick << " \" \n";
out << "d=\"M " << s->getChunk(0)->getP0().x << " "
<< ly - s->getChunk(0)->getP0().y << "\n";
for (int i = 0; i < s->getChunkCount(); i++)
out << "Q " << s->getChunk(i)->getP1().x << ","
<< ly - s->getChunk(i)->getP1().y << "," << s->getChunk(i)->getP2().x
<< "," << ly - s->getChunk(i)->getP2().y << "\n";
out << " \" /> \n";
}
//----------------------------------------------------------
Tiio::SvgWriterProperties::SvgWriterProperties()
: m_strokeMode("Stroke Mode"), m_outlineQuality("Outline Quality") {
m_strokeMode.addValue(L"Centerline");
m_strokeMode.addValue(L"Outline");
m_outlineQuality.addValue(L"High");
m_outlineQuality.addValue(L"Medium");
m_outlineQuality.addValue(L"Low");
bind(m_strokeMode);
bind(m_outlineQuality);
}
//----------------------------------------------------------------------------
// void writeSvg(QString path, TVectorImageP v)
void TImageWriterSvg::save(const TImageP &img) {
const TVectorImageP v = (const TVectorImageP)img;
if (v->getStrokeCount() == 0) return;
TPalette *plt = v->getPalette();
TRectD r = v->getBBox();
double ly = r.getP00().y + r.getP11().y;
QFile file(this->getFilePath().getQString());
if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) return;
QTextStream out(&file);
out.setRealNumberPrecision(1);
out.setRealNumberNotation(QTextStream::FixedNotation);
out << "<?xml version=\"1.0\"?>\n";
out << "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" "
"\"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n";
out << "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\">\n";
out << "<g transform=\"translate(" << -r.getP00().x << "," << -r.getP00().y
<< ")\" stroke-width=\"0\" fill=\"none\" >\n";
bool isCenterline =
((TEnumProperty *)(m_properties->getProperty("Stroke Mode")))
->getValue() == L"Centerline";
double quality = 1;
if (!isCenterline) {
if (((TEnumProperty *)(m_properties->getProperty("Outline Quality")))
->getValue() == L"Low")
quality = 200;
else if (((TEnumProperty *)(m_properties->getProperty("Outline Quality")))
->getValue() == L"Medium")
quality = 10;
}
for (int j = 0; j < (int)v->getRegionCount(); j++)
writeRegion(v->getRegion(j), plt, out, ly);
for (int j = 0; j < (int)v->getStrokeCount(); j++)
if (isCenterline)
writeCenterlineStroke(v->getStroke(j), plt, out, ly);
else
writeOutlineStroke(v->getStroke(j), plt, out, ly, quality);
out << "</g> \n";
out << "</svg> \n";
}
//-----------------------------------------------------------------------------
namespace {
int addColorToPalette(TPalette *plt, unsigned int _color) {
TPixel color(_color & 0xFF, (_color >> 8) & 0xFF, _color >> 16);
for (int i = 0; i < plt->getStyleCount(); i++)
if (plt->getStyle(i)->getMainColor() == color) return i;
TPalette::Page *page = plt->getPage(0);
int index = page->addStyle(color);
return index; // plt->addStyle(color);
}
int findColor(TPalette *plt, unsigned int _color) {
TPixel color(_color & 0xFF, (_color >> 8) & 0xFF, _color >> 16);
for (int i = 0; i < plt->getStyleCount(); i++)
if (plt->getStyle(i)->getMainColor() == color) return i;
assert(false);
return -1;
}
//-----------------------------------------------------------------------------
TStroke *buildStroke(NSVGpath *path, float width) {
assert((path->npts - 1) % 3 == 0);
TThickPoint p0 = TThickPoint(path->pts[0], -path->pts[1], width);
std::vector<TThickPoint> points;
points.push_back(p0);
for (int i = 1; i < path->npts; i += 3) {
std::vector<TThickQuadratic *> chunkArray;
computeQuadraticsFromCubic(
p0, TThickPoint(path->pts[2 * i], -path->pts[2 * i + 1], width),
TThickPoint(path->pts[2 * i + 2], -path->pts[2 * i + 3], width),
TThickPoint(path->pts[2 * i + 4], -path->pts[2 * i + 5], width), 0.01,
chunkArray);
for (int j = 0; j < chunkArray.size(); j++) {
points.push_back(chunkArray[j]->getP1());
points.push_back(chunkArray[j]->getP2());
}
p0 = chunkArray.back()->getP2();
}
if (points.empty()) return 0;
if (path->closed) {
if (points.back() != points.front()) {
points.push_back(0.5 * (points.back() + points.front()));
points.push_back(points.front());
} else {
int gasp = 0;
}
}
TStroke *s = new TStroke(points);
s->setSelfLoop(path->closed);
return s;
}
} // namespace
//-----------------------------------------------------------------------------
TImageP TImageReaderSvg::load() {
NSVGimage *svgImg =
nsvgParseFromFile(m_path.getQString().toStdString().c_str());
if (!svgImg) return TImageP();
TPalette *plt = m_level->getPalette();
assert(plt);
TVectorImage *vimage = new TVectorImage();
vimage->setPalette(plt);
for (NSVGshape *shape = svgImg->shapes; shape; shape = shape->next) {
int inkIndex, paintIndex;
NSVGpath *path = shape->paths;
if (!path) continue;
// TVectorImageP vapp = new TVectorImage();
// TPalette* appPlt = new TPalette();
// vapp->setPalette(appPlt);
TPixel color(shape->fillColor & 0xFF, (shape->fillColor >> 8) & 0xFF,
shape->fillColor >> 16);
if (!shape->hasFill) {
assert(color == TPixel::Black);
shape->hasFill = true;
}
if (shape->hasStroke) inkIndex = findColor(plt, shape->strokeColor);
if (shape->hasFill) paintIndex = findColor(plt, shape->fillColor);
// vapp->setPalette(plt.getPointer());
int startStrokeIndex = vimage->getStrokeCount();
for (; path; path = path->next) {
TStroke *s = buildStroke(path, shape->hasStroke ? shape->strokeWidth : 0);
if (!s) continue;
s->setStyle(shape->hasStroke ? inkIndex : 0);
vimage->addStroke(s);
}
if (startStrokeIndex == vimage->getStrokeCount()) continue;
vimage->group(startStrokeIndex,
vimage->getStrokeCount() - startStrokeIndex);
if (shape->hasFill) {
vimage->enterGroup(startStrokeIndex);
vimage->selectFill(TRectD(-9999999, -9999999, 9999999, 9999999), 0,
paintIndex, true, true, false);
vimage->exitGroup();
}
/* vapp->findRegions();
if (paintIndex!=-1)
for (int i=0; i<(int)vapp->getRegionCount(); i++)
vapp->getRegion(i)->setStyle(paintIndex);
std::vector<int> indexes(vapp->getStrokeCount());
for (int i=0; i<(int)vapp->getStrokeCount() ;i++)
indexes[i] = vimage->getStrokeCount()+i;
vimage->insertImage(vapp, indexes);*/
// delete appPlt;
}
nsvgDelete(svgImg);
// if (m_level)
// m_level->setPalette(plt);
return TImageP(vimage);
}
//-----------------------------------------------------
TLevelReaderSvg::TLevelReaderSvg(const TFilePath &path) : TLevelReader(path) {}
//-----------------------------------------------------
TImageReaderP TLevelReaderSvg::getFrameReader(TFrameId fid) {
return new TImageReaderSvg(getFilePath().withFrame(fid), m_level);
}
//-----------------------------------------------------
TLevelP TLevelReaderSvg::loadInfo() {
m_level = TLevelReader::loadInfo();
TPalette *plt = new TPalette();
TLevel::Iterator it = m_level->begin();
for (; it != m_level->end(); ++it) {
NSVGimage *svgImg = nsvgParseFromFile(
m_path.withFrame(it->first).getQString().toStdString().c_str());
if (!svgImg) continue;
for (NSVGshape *shape = svgImg->shapes; shape; shape = shape->next) {
if (shape->hasStroke) addColorToPalette(plt, shape->strokeColor);
if (shape->hasFill) addColorToPalette(plt, shape->fillColor);
}
nsvgDelete(svgImg);
}
m_level->setPalette(plt);
return m_level;
}