diff options
Diffstat (limited to 'ebus/webapp/static/jquery.flot.selection.js')
| -rw-r--r-- | ebus/webapp/static/jquery.flot.selection.js | 344 |
1 files changed, 0 insertions, 344 deletions
diff --git a/ebus/webapp/static/jquery.flot.selection.js b/ebus/webapp/static/jquery.flot.selection.js deleted file mode 100644 index 7f7b326..0000000 --- a/ebus/webapp/static/jquery.flot.selection.js +++ /dev/null @@ -1,344 +0,0 @@ -/* -Flot plugin for selecting regions. - -The plugin defines the following options: - - selection: { - mode: null or "x" or "y" or "xy", - color: color - } - -Selection support is enabled by setting the mode to one of "x", "y" or -"xy". In "x" mode, the user will only be able to specify the x range, -similarly for "y" mode. For "xy", the selection becomes a rectangle -where both ranges can be specified. "color" is color of the selection -(if you need to change the color later on, you can get to it with -plot.getOptions().selection.color). - -When selection support is enabled, a "plotselected" event will be -emitted on the DOM element you passed into the plot function. The -event handler gets a parameter with the ranges selected on the axes, -like this: - - placeholder.bind("plotselected", function(event, ranges) { - alert("You selected " + ranges.xaxis.from + " to " + ranges.xaxis.to) - // similar for yaxis - with multiple axes, the extra ones are in - // x2axis, x3axis, ... - }); - -The "plotselected" event is only fired when the user has finished -making the selection. A "plotselecting" event is fired during the -process with the same parameters as the "plotselected" event, in case -you want to know what's happening while it's happening, - -A "plotunselected" event with no arguments is emitted when the user -clicks the mouse to remove the selection. - -The plugin allso adds the following methods to the plot object: - -- setSelection(ranges, preventEvent) - - Set the selection rectangle. The passed in ranges is on the same - form as returned in the "plotselected" event. If the selection mode - is "x", you should put in either an xaxis range, if the mode is "y" - you need to put in an yaxis range and both xaxis and yaxis if the - selection mode is "xy", like this: - - setSelection({ xaxis: { from: 0, to: 10 }, yaxis: { from: 40, to: 60 } }); - - setSelection will trigger the "plotselected" event when called. If - you don't want that to happen, e.g. if you're inside a - "plotselected" handler, pass true as the second parameter. If you - are using multiple axes, you can specify the ranges on any of those, - e.g. as x2axis/x3axis/... instead of xaxis, the plugin picks the - first one it sees. - -- clearSelection(preventEvent) - - Clear the selection rectangle. Pass in true to avoid getting a - "plotunselected" event. - -- getSelection() - - Returns the current selection in the same format as the - "plotselected" event. If there's currently no selection, the - function returns null. - -*/ - -(function ($) { - function init(plot) { - var selection = { - first: { x: -1, y: -1}, second: { x: -1, y: -1}, - show: false, - active: false - }; - - // FIXME: The drag handling implemented here should be - // abstracted out, there's some similar code from a library in - // the navigation plugin, this should be massaged a bit to fit - // the Flot cases here better and reused. Doing this would - // make this plugin much slimmer. - var savedhandlers = {}; - - var mouseUpHandler = null; - - function onMouseMove(e) { - if (selection.active) { - updateSelection(e); - - plot.getPlaceholder().trigger("plotselecting", [ getSelection() ]); - } - } - - function onMouseDown(e) { - if (e.which != 1) // only accept left-click - return; - - // cancel out any text selections - document.body.focus(); - - // prevent text selection and drag in old-school browsers - if (document.onselectstart !== undefined && savedhandlers.onselectstart == null) { - savedhandlers.onselectstart = document.onselectstart; - document.onselectstart = function () { return false; }; - } - if (document.ondrag !== undefined && savedhandlers.ondrag == null) { - savedhandlers.ondrag = document.ondrag; - document.ondrag = function () { return false; }; - } - - setSelectionPos(selection.first, e); - - selection.active = true; - - // this is a bit silly, but we have to use a closure to be - // able to whack the same handler again - mouseUpHandler = function (e) { onMouseUp(e); }; - - $(document).one("mouseup", mouseUpHandler); - } - - function onMouseUp(e) { - mouseUpHandler = null; - - // revert drag stuff for old-school browsers - if (document.onselectstart !== undefined) - document.onselectstart = savedhandlers.onselectstart; - if (document.ondrag !== undefined) - document.ondrag = savedhandlers.ondrag; - - // no more dragging - selection.active = false; - updateSelection(e); - - if (selectionIsSane()) - triggerSelectedEvent(); - else { - // this counts as a clear - plot.getPlaceholder().trigger("plotunselected", [ ]); - plot.getPlaceholder().trigger("plotselecting", [ null ]); - } - - return false; - } - - function getSelection() { - if (!selectionIsSane()) - return null; - - var r = {}, c1 = selection.first, c2 = selection.second; - $.each(plot.getAxes(), function (name, axis) { - if (axis.used) { - var p1 = axis.c2p(c1[axis.direction]), p2 = axis.c2p(c2[axis.direction]); - r[name] = { from: Math.min(p1, p2), to: Math.max(p1, p2) }; - } - }); - return r; - } - - function triggerSelectedEvent() { - var r = getSelection(); - - plot.getPlaceholder().trigger("plotselected", [ r ]); - - // backwards-compat stuff, to be removed in future - if (r.xaxis && r.yaxis) - plot.getPlaceholder().trigger("selected", [ { x1: r.xaxis.from, y1: r.yaxis.from, x2: r.xaxis.to, y2: r.yaxis.to } ]); - } - - function clamp(min, value, max) { - return value < min ? min: (value > max ? max: value); - } - - function setSelectionPos(pos, e) { - var o = plot.getOptions(); - var offset = plot.getPlaceholder().offset(); - var plotOffset = plot.getPlotOffset(); - pos.x = clamp(0, e.pageX - offset.left - plotOffset.left, plot.width()); - pos.y = clamp(0, e.pageY - offset.top - plotOffset.top, plot.height()); - - if (o.selection.mode == "y") - pos.x = pos == selection.first ? 0 : plot.width(); - - if (o.selection.mode == "x") - pos.y = pos == selection.first ? 0 : plot.height(); - } - - function updateSelection(pos) { - if (pos.pageX == null) - return; - - setSelectionPos(selection.second, pos); - if (selectionIsSane()) { - selection.show = true; - plot.triggerRedrawOverlay(); - } - else - clearSelection(true); - } - - function clearSelection(preventEvent) { - if (selection.show) { - selection.show = false; - plot.triggerRedrawOverlay(); - if (!preventEvent) - plot.getPlaceholder().trigger("plotunselected", [ ]); - } - } - - // function taken from markings support in Flot - function extractRange(ranges, coord) { - var axis, from, to, key, axes = plot.getAxes(); - - for (var k in axes) { - axis = axes[k]; - if (axis.direction == coord) { - key = coord + axis.n + "axis"; - if (!ranges[key] && axis.n == 1) - key = coord + "axis"; // support x1axis as xaxis - if (ranges[key]) { - from = ranges[key].from; - to = ranges[key].to; - break; - } - } - } - - // backwards-compat stuff - to be removed in future - if (!ranges[key]) { - axis = coord == "x" ? plot.getXAxes()[0] : plot.getYAxes()[0]; - from = ranges[coord + "1"]; - to = ranges[coord + "2"]; - } - - // auto-reverse as an added bonus - if (from != null && to != null && from > to) { - var tmp = from; - from = to; - to = tmp; - } - - return { from: from, to: to, axis: axis }; - } - - function setSelection(ranges, preventEvent) { - var axis, range, o = plot.getOptions(); - - if (o.selection.mode == "y") { - selection.first.x = 0; - selection.second.x = plot.width(); - } - else { - range = extractRange(ranges, "x"); - - selection.first.x = range.axis.p2c(range.from); - selection.second.x = range.axis.p2c(range.to); - } - - if (o.selection.mode == "x") { - selection.first.y = 0; - selection.second.y = plot.height(); - } - else { - range = extractRange(ranges, "y"); - - selection.first.y = range.axis.p2c(range.from); - selection.second.y = range.axis.p2c(range.to); - } - - selection.show = true; - plot.triggerRedrawOverlay(); - if (!preventEvent && selectionIsSane()) - triggerSelectedEvent(); - } - - function selectionIsSane() { - var minSize = 5; - return Math.abs(selection.second.x - selection.first.x) >= minSize && - Math.abs(selection.second.y - selection.first.y) >= minSize; - } - - plot.clearSelection = clearSelection; - plot.setSelection = setSelection; - plot.getSelection = getSelection; - - plot.hooks.bindEvents.push(function(plot, eventHolder) { - var o = plot.getOptions(); - if (o.selection.mode != null) { - eventHolder.mousemove(onMouseMove); - eventHolder.mousedown(onMouseDown); - } - }); - - - plot.hooks.drawOverlay.push(function (plot, ctx) { - // draw selection - if (selection.show && selectionIsSane()) { - var plotOffset = plot.getPlotOffset(); - var o = plot.getOptions(); - - ctx.save(); - ctx.translate(plotOffset.left, plotOffset.top); - - var c = $.color.parse(o.selection.color); - - ctx.strokeStyle = c.scale('a', 0.8).toString(); - ctx.lineWidth = 1; - ctx.lineJoin = "round"; - ctx.fillStyle = c.scale('a', 0.4).toString(); - - var x = Math.min(selection.first.x, selection.second.x), - y = Math.min(selection.first.y, selection.second.y), - w = Math.abs(selection.second.x - selection.first.x), - h = Math.abs(selection.second.y - selection.first.y); - - ctx.fillRect(x, y, w, h); - ctx.strokeRect(x, y, w, h); - - ctx.restore(); - } - }); - - plot.hooks.shutdown.push(function (plot, eventHolder) { - eventHolder.unbind("mousemove", onMouseMove); - eventHolder.unbind("mousedown", onMouseDown); - - if (mouseUpHandler) - $(document).unbind("mouseup", mouseUpHandler); - }); - - } - - $.plot.plugins.push({ - init: init, - options: { - selection: { - mode: null, // one of null, "x", "y" or "xy" - color: "#e8cfac" - } - }, - name: 'selection', - version: '1.1' - }); -})(jQuery); |