-// Code for a variety of interaction models. Used in interaction.html, but split out from
-// that file so they can be tested in isolation.
-//
-function downV3(event, g, context) {
- context.initializeMouseDown(event, g, context);
- if (event.altKey || event.shiftKey) {
- Dygraph.startZoom(event, g, context);
- } else {
- Dygraph.startPan(event, g, context);
- }
-}
-
-function moveV3(event, g, context) {
- if (context.isPanning) {
- Dygraph.movePan(event, g, context);
- } else if (context.isZooming) {
- Dygraph.moveZoom(event, g, context);
- }
-}
-
-function upV3(event, g, context) {
- if (context.isPanning) {
- Dygraph.endPan(event, g, context);
- } else if (context.isZooming) {
- Dygraph.endZoom(event, g, context);
- }
-}
-
-// Take the offset of a mouse event on the dygraph canvas and
-// convert it to a pair of percentages from the bottom left.
-// (Not top left, bottom is where the lower value is.)
-function offsetToPercentage(g, offsetX, offsetY) {
- // This is calculating the pixel offset of the leftmost date.
- var xOffset = g.toDomCoords(g.xAxisRange()[0], null)[0];
- var yar0 = g.yAxisRange(0);
-
- // This is calculating the pixel of the higest value. (Top pixel)
- var yOffset = g.toDomCoords(null, yar0[1])[1];
-
- // x y w and h are relative to the corner of the drawing area,
- // so that the upper corner of the drawing area is (0, 0).
- var x = offsetX - xOffset;
- var y = offsetY - yOffset;
-
- // This is computing the rightmost pixel, effectively defining the
- // width.
- var w = g.toDomCoords(g.xAxisRange()[1], null)[0] - xOffset;
-
- // This is computing the lowest pixel, effectively defining the height.
- var h = g.toDomCoords(null, yar0[0])[1] - yOffset;
-
- // Percentage from the left.
- var xPct = w == 0 ? 0 : (x / w);
- // Percentage from the top.
- var yPct = h == 0 ? 0 : (y / h);
-
- // The (1-) part below changes it from "% distance down from the top"
- // to "% distance up from the bottom".
- return [xPct, (1-yPct)];
-}
-
-function dblClickV3(event, g, context) {
- // Reducing by 20% makes it 80% the original size, which means
- // to restore to original size it must grow by 25%
- var percentages = offsetToPercentage(g, event.offsetX, event.offsetY);
- var xPct = percentages[0];
- var yPct = percentages[1];
-
- if (event.ctrlKey) {
- zoom(g, -.25, xPct, yPct);
- } else {
- zoom(g, +.2, xPct, yPct);
- }
-}
-
-var lastClickedGraph = null;
-
-function clickV3(event, g, context) {
- lastClickedGraph = g;
- Dygraph.cancelEvent(event);
-}
-
-function scrollV3(event, g, context) {
- if (lastClickedGraph != g) {
- return;
- }
- var normal = event.detail ? event.detail * -1 : event.wheelDelta / 40;
- // For me the normalized value shows 0.075 for one click. If I took
- // that verbatim, it would be a 7.5%.
- var percentage = normal / 50;
-
- var percentages = offsetToPercentage(g, event.offsetX, event.offsetY);
- var xPct = percentages[0];
- var yPct = percentages[1];
-
- zoom(g, percentage, xPct, yPct);
- Dygraph.cancelEvent(event);
-}
-
-// Adjusts [x, y] toward each other by zoomInPercentage%
-// Split it so the left/bottom axis gets xBias/yBias of that change and
-// tight/top gets (1-xBias)/(1-yBias) of that change.
-//
-// If a bias is missing it splits it down the middle.
-function zoom(g, zoomInPercentage, xBias, yBias) {
- xBias = xBias || 0.5;
- yBias = yBias || 0.5;
- function adjustAxis(axis, zoomInPercentage, bias) {
- var delta = axis[1] - axis[0];
- var increment = delta * zoomInPercentage;
- var foo = [increment * bias, increment * (1-bias)];
- return [ axis[0] + foo[0], axis[1] - foo[1] ];
- }
- var yAxes = g.yAxisRanges();
- var newYAxes = [];
- for (var i = 0; i < yAxes.length; i++) {
- newYAxes[i] = adjustAxis(yAxes[i], zoomInPercentage, yBias);
- }
-
- g.updateOptions({
- dateWindow: adjustAxis(g.xAxisRange(), zoomInPercentage, xBias),
- valueRange: newYAxes[0]
- });
-}
-
-var v4Active = false;
-var v4Canvas = null;
-
-function downV4(event, g, context) {
- context.initializeMouseDown(event, g, context);
- v4Active = true;
- moveV4(event, g, context); // in case the mouse went down on a data point.
-}
-
-var processed = [];
-
-function moveV4(event, g, context) {
- var RANGE = 7;
-
- if (v4Active) {
- var canvasx = Dygraph.pageX(event) - Dygraph.findPosX(g.graphDiv);
- var canvasy = Dygraph.pageY(event) - Dygraph.findPosY(g.graphDiv);
-
- var rows = g.numRows();
- // Row layout:
- // [date, [val1, stdev1], [val2, stdev2]]
- for (var row = 0; row < rows; row++) {
- var date = g.getValue(row, 0);
- var x = g.toDomCoords(date, null)[0];
- var diff = Math.abs(canvasx - x);
- if (diff < RANGE) {
- for (var col = 1; col < 3; col++) {
- // TODO(konigsberg): these will throw exceptions as data is removed.
- var vals = g.getValue(row, col);
- if (vals == null) { continue; }
- var val = vals[0];
- var y = g.toDomCoords(null, val)[1];
- var diff2 = Math.abs(canvasy - y);
- if (diff2 < RANGE) {
- var found = false;
- for (var i in processed) {
- var stored = processed[i];
- if(stored[0] == row && stored[1] == col) {
- found = true;
- break;
- }
- }
- if (!found) {
- processed.push([row, col]);
- drawV4(x, y);
- }
- return;
- }
- }
- }
+/*global Gallery,Dygraph,data */
+/*global NoisyData,downV3,moveV3,upV3,clickV3,dblClickV3,scrollV3,restorePositioning,downV4,moveV4,upV4,dblClickV4,captureCanvas */
+
+Gallery.register(
+ 'interaction',
+ {
+ name: 'Custom interaction models',
+ title: 'title',
+ setup: function(parent) {
+ parent.innerHTML = [
+ "<h3>Default interaction model</h3>",
+ "<div style='width:600px;'>",
+ " <p style='text-align:center;'>",
+ " Zoom: click-drag, Pan: shift-click-drag, Restore: double-click",
+ " </p>",
+ " <div id='div_g' style='width:600px; height:300px;'></div>",
+ "</div>",
+ "",
+ "<h3>Empty interaction model</h3>",
+ "<div style='width:600px;'>",
+ " <p style='text-align:center;'>",
+ " Click and drag all you like, it won't do anything!",
+ " </p>",
+ " <div id='div_g2' style='width:600px; height:300px;'></div>",
+ "</div>",
+ "<div id='g2_console'></div>", // what is this?
+ "",
+ "<h3>Custom interaction model</h3>",
+ "<div style='width:600px;'>",
+ " <p style='text-align:center;'>",
+ " Zoom in: double-click, scroll wheel<br/>",
+ " Zoom out: ctrl-double-click, scroll wheel<br/>",
+ " Standard Zoom: shift-click-drag",
+ " Standard Pan: click-drag<br/>",
+ " Restore zoom level: press button<br/>",
+ " </p>",
+ " <button id='restore3'>Restore position</button>",
+ " <div id='div_g3' style='width:600px; height:300px;'></div>",
+ "</div>",
+ "<h3>Fun model!</h3>",
+ "<div style='width:600px;'>",
+ " <p style='text-align:center;'>",
+ " Keep the mouse button pressed, and hover over all points",
+ " to mark them.",
+ " </p>",
+ " <div id='div_g4' style='width:600px; height:300px;'></div>",
+ "</div>"
+ ].join('\n');
+
+ },
+ run: function() {
+ var lastClickedGraph;
+ document.addEventListener("mousewheel", function() { lastClickedGraph = null; });
+ document.addEventListener("click", function() { lastClickedGraph = null; });
+ new Dygraph(document.getElementById("div_g"),
+ NoisyData, { errorBars : true });
+ new Dygraph(document.getElementById("div_g2"),
+ NoisyData,
+ {
+ errorBars : true,
+ interactionModel: {}
+ });
+ var g3 = new Dygraph(document.getElementById("div_g3"),
+ NoisyData, { errorBars : true, interactionModel : {
+ 'mousedown' : downV3,
+ 'mousemove' : moveV3,
+ 'mouseup' : upV3,
+ 'click' : clickV3,
+ 'dblclick' : dblClickV3,
+ 'mousewheel' : scrollV3
+ }});
+ document.getElementById("restore3").onclick = function() {
+ restorePositioning(g3);
+ };
+ new Dygraph(document.getElementById("div_g4"),
+ NoisyData, {
+ errorBars : true,
+ drawPoints : true,
+ interactionModel : {
+ 'mousedown' : downV4,
+ 'mousemove' : moveV4,
+ 'mouseup' : upV4,
+ 'dblclick' : dblClickV4
+ },
+ underlayCallback : captureCanvas
+ });
+ },
+ clean: function() {
+ document.removeEventListener('mousewheel');
+ document.removeEventListener('click');
}
- }
-}
-
-function upV4(event, g, context) {
- if (v4Active) {
- v4Active = false;
- }
-}
-
-function dblClickV4(event, g, context) {
- restorePositioning(g4);
-}
-
-function drawV4(x, y) {
- var ctx = v4Canvas;
-
- ctx.strokeStyle = "#000000";
- ctx.fillStyle = "#FFFF00";
- ctx.beginPath();
- ctx.arc(x,y,5,0,Math.PI*2,true);
- ctx.closePath();
- ctx.stroke();
- ctx.fill();
-}
-
-function captureCanvas(canvas, area, g) {
- v4Canvas = canvas;
-}
-
-function restorePositioning(g) {
- g.updateOptions({
- dateWindow: null,
- valueRange: null
});
-}
projects / dygraphs.git / blobdiff