var CGP = (function() { 'use strict'; var mouse_move = function(e) { if (this.rrdgraph.mousedown) { var factor = (this.rrdgraph.end - this.rrdgraph.start) / this.rrdgraph.xsize; var x = e.pageX - this.offsetLeft; var diff = x - this.rrdgraph.mousex; var difffactor = Math.abs(Math.round(diff * factor)); if (diff > 0) { this.rrdgraph.end -= difffactor; this.rrdgraph.start -= difffactor; } else { this.rrdgraph.end += difffactor; this.rrdgraph.start += difffactor; } this.rrdgraph.mousex = x; try { this.rrdgraph.graph_paint(); } catch (ex) { console.error('mouse_move:', ex, ex.stack); } } }; var mouse_up = function(e) { this.rrdgraph.mousedown = false; this.style.cursor = 'default'; }; var mouse_down = function(e) { var x = e.pageX - this.offsetLeft; this.rrdgraph.mousedown = true; this.rrdgraph.mousex = x; this.style.cursor = 'move'; }; var mouse_scroll = function(e) { e = e ? e : window.event; var wheel = e.detail ? e.detail * -1 : e.wheelDelta / 40; var cstime = this.stime[this.stidx]; if (wheel < 0) { this.stidx++; if (this.stidx >= this.stlen) this.stidx = this.stlen - 1; } else { this.stidx--; if (this.stidx < 0) this.stidx = 0; } if (cstime !== this.stime[this.stidx]) { var posx = e.clientX - e.target.getBoundingClientRect().left - this.rrdgraph.xorigin; var relx = this.rrdgraph.xsize / Math.min(Math.max(posx, 0), this.rrdgraph.xsize); var cntr = this.rrdgraph.start + Math.abs(Math.round((this.rrdgraph.end - this.rrdgraph.start) / relx)); this.rrdgraph.start = Math.round(cntr - this.stime[this.stidx] / relx); this.rrdgraph.end = this.rrdgraph.start + this.stime[this.stidx]; try { this.rrdgraph.graph_paint(); } catch (ex) { console.error('mouse_scroll:', ex, ex.stack); } } if (e.stopPropagation) e.stopPropagation(); if (e.preventDefault) e.preventDefault(); e.cancelBubble = true; e.cancel = true; e.returnValue = false; return false; }; function prepare_draw(id) { RrdGraph.prototype.mousex = 0; RrdGraph.prototype.mousedown = false; var cmdline = document.getElementById(id).textContent; var gfx = new RrdGfxCanvas(id); var fetch = new RrdDataFile(); var rrdcmdline = null; try { rrdcmdline = new RrdCmdLine(gfx, fetch, cmdline); } catch (e) { console.error('prepare_draw:', e, e.stack); } var rrdgraph = rrdcmdline.graph; gfx.canvas.stime = [300, 600, 900, 1200, 1800, 3600, 7200, 21600, 43200, 86400, 172800, 604800, 2592000, 5184000, 15768000, 31536000]; gfx.canvas.stlen = gfx.canvas.stime.length; gfx.canvas.stidx = 0; gfx.canvas.rrdgraph = rrdgraph; gfx.canvas.removeEventListener('mousemove', mouse_move, false); gfx.canvas.addEventListener('mousemove', mouse_move, false); gfx.canvas.removeEventListener('mouseup', mouse_up, false); gfx.canvas.addEventListener('mouseup', mouse_up, false); gfx.canvas.removeEventListener('mousedown', mouse_down, false); gfx.canvas.addEventListener('mousedown', mouse_down, false); gfx.canvas.removeEventListener('mouseout', mouse_up, false); gfx.canvas.addEventListener('mouseout', mouse_up, false); gfx.canvas.removeEventListener('DOMMouseScroll', mouse_scroll, false); gfx.canvas.addEventListener('DOMMouseScroll', mouse_scroll, false); gfx.canvas.removeEventListener('mousewheel', mouse_scroll, false); gfx.canvas.addEventListener('mousewheel', mouse_scroll, false); var diff = rrdgraph.end - rrdgraph.start; for (var i = 0; i < gfx.canvas.stlen; i++) { if (gfx.canvas.stime[i] >= diff) break; } if (i === gfx.canvas.stlen) gfx.canvas.stidx = gfx.canvas.stlen - 1; else gfx.canvas.stidx = i; return rrdgraph; } function draw(id, async) { var rrdgraph = prepare_draw(id); try { if (async) { rrdgraph.graph_paint_async(); } else { rrdgraph.graph_paint(); } } catch (e) { console.error('draw(' + id + '):', e, e.stack); } } /** * For each canvas.rrd element, initialize a draggable graph. */ function drawAll(async) { var canvases = document.getElementsByClassName('rrd'); for (var i = 0; i < canvases.length; i++) { draw(canvases[i].id, async); if (document.getElementById(canvases[i].id + '-img')) { document.getElementById(canvases[i].id).style.display = 'none'; var dataURL = canvases[i].toDataURL(); document.getElementById(canvases[i].id + '-img').src = dataURL; } } } return { drawAll: drawAll }; }());