+
+ function resize() {
+ ww = window.innerWidth - 4;
+ if (ww > window.innerHeight) ww = window.innerHeight;
+ wh = ww / 2;
+ canvas.width = ww;
+ canvas.height = wh;
+ canvas.style.width = ww + "px";
+ canvas.style.height = wh + "px";
+ redraw();
+ }
+
+ function daystart(date) {
+ date.setMilliseconds(0);
+ date.setSeconds(0);
+ date.setMinutes(0);
+ date.setHours(0);
+ return date;
+ }
+
+ function prevweek() {
+ var tdy = daystart(new Date());
+ var dow = tdy.getDay();
+ var wstart, wend;
+
+ wstart = new Date(1*tdy - 86400000 * (dow + 7));
+ wend = new Date(1*wstart + 86400000 * 7);
+ sendquery(wstart.toISOString(), wend.toISOString());
+ }
+
+ function thisweek() {
+ var tdy = daystart(new Date());
+ var dow = tdy.getDay();
+ var wstart, wend;
+
+ wstart = new Date(1*tdy - 86400000 * dow);
+ wend = new Date(1*wstart + 86400000 * 7);
+ sendquery(wstart.toISOString(), wend.toISOString());
+ }
+
+ function beforeyesterday() {
+ var tdy = daystart(new Date());
+ var ytd = new Date(1*tdy - 86400000);
+ var byd = new Date(1*ytd - 86400000);
+ sendquery(byd.toISOString(), ytd.toISOString());
+ }
+
+ function yesterday() {
+ var tdy = daystart(new Date());
+ var ytd = new Date(1*tdy - 86400000);
+ sendquery(ytd.toISOString(), tdy.toISOString());
+ }
+
+ function today() {
+ var tdy = daystart(new Date());
+ var tmr = new Date(1*tdy + 86400000);
+ sendquery(tdy.toISOString(), tmr.toISOString());
+ }
+
+ function initialize() {
+ var qstr = window.location.search;
+
+ dbg = document.getElementById("debug");
+ errordiv = document.getElementById("errormsg");
+ canvas = document.getElementById("plot");
+ ctx = canvas.getContext("2d");
+ resize();
+ if (qstr) sendreq(qstr);
+ else today();
+
+ document.getElementById("today").onclick = today;
+ document.getElementById("yesterday").onclick = yesterday;
+ document.getElementById("beforeyesterday").onclick = beforeyesterday;
+ document.getElementById("thisweek").onclick = thisweek;
+ document.getElementById("prevweek").onclick = prevweek;
+ }
+
+ /* Set up */
+ window.onload = initialize;
+ window.onresize = resize;