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