+static void transform_preset_record(const char *fn, const char *fn_new) {
+ FILE *f;
+ f= fopen(fn_new,"wb");
+ if (!f) diee("open new transform");
+ if (fwrite(transform,sizeof(transform),1,f) != 1) diee("write transform");
+ if (fclose(f)) diee("fclose new transform");
+ if (rename(fn_new,fn)) diee("install transform");
+}
+
+static void transform_preset_playback(const char *fn) {
+ FILE *f;
+ f= fopen(fn,"rb");
+ if (!f && errno==ENOENT) {
+ fprintf(stderr,"no preset %s\n",fn);
+ XBell(display,100);
+ return;
+ }
+ errno= 0;
+ if (fread(transform,sizeof(transform),1,f) != 1) {
+ perror("read preset!");
+ XBell(display,100);
+ return;
+ }
+ fclose(f);
+ show();
+}
+
+static void event_key(XKeyEvent *e) {
+ KeySym ks;
+ XKeyEvent e_nomod;
+ char buf[10], buf_nomod[10];
+ int r, r_nomod;
+
+ r= XLookupString(e,buf,sizeof(buf)-1,&ks,0);
+ if (!r) {
+ printf("XLookupString keycode=%u state=0x%x gave %d\n",
+ e->keycode, e->state, r);
+ return;
+ }
+
+ if (!strcmp(buf,"q"))
+ exit(0);
+ else if (!strcmp(buf,"p"))
+ pause_updates= !pause_updates;
+ else if (!strcmp(buf,"w")) {
+ wireframe= !wireframe;
+ show();
+ return;
+ } else if (!strcmp(buf,"d")) {
+ eyes_apart= eyes_apart>0 ? eyes_apart_min : eyes_apart_preferred;
+ show();
+ return;
+ }
+
+ e_nomod= *e;
+ e_nomod.state= 0;
+ buf_nomod[0]= 0;
+ r_nomod= XLookupString(&e_nomod,buf_nomod,sizeof(buf_nomod)-1,&ks,0);
+ if (r_nomod && !buf_nomod[1] && buf_nomod[0]>='0' && buf_nomod[0]<='9') {
+ char filename[20], filename_new[25];
+ snprintf(filename,sizeof(filename)-1,".view-preset-%s",buf_nomod);
+ snprintf(filename_new,sizeof(filename_new)-1,"%s.new",filename);
+ printf("transform preset %d %s\n", e->state, filename);
+ if (e->state) transform_preset_record(filename,filename_new);
+ else transform_preset_playback(filename);
+ return;
+ }
+
+ printf("unknown key keycode=%d state=0x%x char=%c 0x%02x "
+ "[rnm=%d bnm[0,1]=0x%02x,%02x]\n",
+ e->keycode, e->state, buf[0]>' ' && buf[0]<127 ? buf[0] : '?',
+ buf[0], r_nomod, buf_nomod[0], buf_nomod[1]);
+ printf("%d %d %d %d\n",
+ r_nomod,
+ !buf_nomod[1],
+ buf_nomod[0]>='0',
+ buf_nomod[0]<='9');
+}
+