#include <u.h>#include <libc.h>#include <draw.h>#include <thread.h>#include <mouse.h>#include <keyboard.h>#include "a.h" #define NULL nil#define STBI_NO_STDIO#define STB_IMAGE_IMPLEMENTATION#include "stb_image.h"#define NANOSVG_ALL_COLOR_KEYWORDS#define NANOSVG_IMPLEMENTATION#include "nanosvg.h"#define NANOSVGRAST_IMPLEMENTATION#include "nanosvgrast.h" Image*load9(char *filename){	Image *i;	int fd; 	fd = open(filename, OREAD);	if(fd < 0)		sysfatal("open: %r");	i = readimage(display, fd, 1);	if(i == nil)		sysfatal("readimage: %r");	close(fd);	return i;} Image*loadany(char *filename){	Image *i;	uchar *buf, *out;	int n, w, h, c;	ulong chan; 	buf = readfile(filename, &n);	if(buf == nil)		sysfatal("readfile: %r");	out = stbi_load_from_memory(buf, n, &w, &h, &c, 4);	free(buf);	if(out==nil)		sysfatal("stbi_load_from_memory: %r");	chan = c==3 ? XBGR32 : ABGR32;	lockdisplay(display);	i = eallocimage(w, h, chan, 0, DNofill);	if(loadimage(i, i->r, out, 4*w*h)<0)		sysfatal("loadimage: %r");	unlockdisplay(display);	return i;} Image*loadsvg(char *filename){	Image *i;	NSVGimage *image;	NSVGrasterizer *rast;	uchar *data;	int w, h, sz; 	image = nsvgParseFromFile(filename, "px", 96);	if(image==nil)		sysfatal("svg parse: %r");	w = image->width;	h = image->height;	rast = nsvgCreateRasterizer();	if(rast==nil)		sysfatal("create rasterizer: %r");	sz = w*h*4;	data = malloc(sz);	if(data==nil)		sysfatal("malloc: %r");	nsvgRasterize(rast, image, 0, 0, 1.0, data, w, h, w*4);	nsvgDelete(image);	nsvgDeleteRasterizer(rast);	lockdisplay(display);	i = eallocimage(w, h, ABGR32, 0, DNofill);	if(loadimage(i, i->r, data, sz)<sz)		sysfatal("loadimage: %r");	unlockdisplay(display);	return i;} Image*load(char *filename){	Image *i;	int f; 	i = nil;	f = fileformat(filename);	if(f < 0)		sysfatal("load: %r");	switch(f){	case SVG:		i = loadsvg(filename);		break;			case NINE:		i = load9(filename);		break;	case GIF:	case JPEG:	case PNG:	case BMP:		i = loadany(filename);		break;	}	return i;} intsave(Image *i, char *f){	int fd, r; 	if(access(f, 0) < 0)		fd = create(f, OWRITE, 0644);	else		fd = open(f, OWRITE|OTRUNC);	if(fd < 0)		return -1;	r = writeimage(fd, i, 1);	close(fd);	return r;} intexport(Image *i, char *f){	int fd, pfd[2], r;	Waitmsg *m; 	r = -1;	if(access(f, 0) < 0)		fd = create(f, OWRITE, 0644);	else		fd = open(f, OWRITE|OTRUNC);	if(fd < 0)		return -1;	if(pipe(pfd) < 0){		close(fd);		return -1;	}	switch(rfork(RFFDG|RFPROC)){	case -1:		goto Err;	case 0:		dup(pfd[1], 0);		dup(fd, 1);		close(pfd[1]);		close(pfd[0]);		execl("/bin/rc", "rc", "-c", "topng", nil);		_exits("exec");	}	if(writeimage(pfd[0], i, 1) < 0)		goto Err;	m = wait();	if(m->msg[0] == 0)		r = 0;Err:	close(fd);	close(pfd[1]);	close(pfd[0]);	return r;}