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#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
#define NCOLORS 6
Image *colors[NCOLORS];
void
eresized(int)
{
if(getwindow(display, Refnone) < 0)
sysfatal("resize failed");
}
int
loadimg(char *name)
{
Image *b;
int fd;
if((fd = open(name, OREAD)) < 0)
return -1;
if((b = readimage(display, fd, 0)) == nil){
close(fd);
return -1;
}
draw(screen, screen->r, b, 0, b->r.min);
flushimage(display, 1);
freeimage(b);
close(fd);
return 0;
}
int
saveimg(char *name)
{
int fd;
if((fd = create(name, OWRITE|OTRUNC, 0666)) < 0)
return -1;
writeimage(fd, screen, 0);
close(fd);
return 0;
}
void
main(int argc, char *argv[])
{
Event e;
Point last;
int b = 1;
int c = 0;
int cn, f;
int haslast = 0;
char brush[128];
char color[NCOLORS];
char file[128];
char fill[NCOLORS];
if(initdraw(0, 0, "paint") < 0){
fprint(2, "paint: initdraw failed: %r\n");
exits("initdraw");
}
einit(Emouse | Ekeyboard);
draw(screen, screen->r, display->white, 0, ZP);
flushimage(display, 1);
colors[0] = display->black;
colors[1] = display->white;
colors[2] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DRed);
colors[3] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DGreen);
colors[4] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DBlue);
colors[5] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DYellow);
ARGBEGIN{
default:
goto Usage;
}ARGEND
switch(argc){
default:
Usage:
fprint(2, "Usage: [file]\n");
exits("usage");
case 0:
break;
case 1:
snprint(file, sizeof(file), "%s", argv[0]);
if(loadimg(file) < 0)
sysfatal("%r");
break;
}
while(1){
switch(event(&e)){
case Emouse:
if(e.mouse.buttons & 1){
if(haslast)
line(screen, last, e.mouse.xy, Enddisc, Enddisc, b, colors[c], ZP);
else
fillellipse(screen, e.mouse.xy, b, b, colors[c], ZP);
last = e.mouse.xy;
haslast = 1;
flushimage(display, 1);
} else
haslast = 0;
break;
case Ekeyboard:
if(e.kbdc == 'b'){
if(eenter("Brush", brush, sizeof(brush), &e.mouse) <= 0)
break;
b = atoi(brush);
}
if(e.kbdc == 'c'){
if(eenter("Color", color, sizeof(color), &e.mouse) <= 0)
break;
cn = atoi(color);
if(cn >= 0 && cn < NCOLORS)
c = cn;
}
if(e.kbdc == 'f'){
if(eenter("Fill", fill, sizeof(fill), &e.mouse) <= 0)
break;
f = atoi(fill);
if(f >= 0 && f < NCOLORS)
draw(screen, screen->r, colors[f], 0, ZP);
}
if(e.kbdc == 'o'){
if(eenter("Open file", file, sizeof(file), &e.mouse) <= 0)
break;
if(loadimg(file) < 0){
rerrstr(file, sizeof(file));
eenter(file, 0, 0, &e.mouse);
}
}
if(e.kbdc == 'q')
exits(nil);
if(e.kbdc == 's'){
if(eenter("Save to", file, sizeof(file), &e.mouse) <= 0)
break;
if(saveimg(file) < 0){
rerrstr(file, sizeof(file));
eenter(file, 0, 0, &e.mouse);
}
}
break;
}
}
}
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