+++ /dev/null
-// 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%
-
- if (!(event.offsetX && event.offsetY)){
- event.offsetX = event.layerX - event.target.offsetLeft;
- event.offsetY = event.layerY - event.target.offsetTop;
- }
-
- 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;
-
- if (!(event.offsetX && event.offsetY)){
- event.offsetX = event.layerX - event.target.offsetLeft;
- event.offsetY = event.layerY - event.target.offsetTop;
- }
-
- 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);
-
- Dygraph.Interaction.startTouch(event, g, context);
-
- Dygraph.Interaction.moveTouch(event, g, context);
-
- Dygraph.Interaction.endTouch(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 graphPos = Dygraph.findPos(g.graphDiv);
- var canvasx = Dygraph.pageX(event) - graphPos.x;
- var canvasy = Dygraph.pageY(event) - graphPos.y;
-
- 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;
- }
- }
- }
- }
- }
-}
-
-function upV4(event, g, context) {
- if (v4Active) {
- v4Active = false;
- }
-}
-
-function dblClickV4(event, g, context) {
- restorePositioning(g);
-}
-
-function drawV4(x, y) {
- var ctx = v4Canvas;
-
- ctx.strokeStyle = "#000000";
- //ctx.fillStyle = "#FFFF00";
- ctx.fillStyle = "#FF0000";
- 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
- });
-}
-
-function newDygraphTouchstart(event, g, context) {
-// This right here is what prevents IOS from doing its own zoom/touch behavior
-// It stops the node from being selected too
-event.preventDefault(); // touch browsers are all nice.
-
-if (event.touches.length > 1) {
-// If the user ever puts two fingers down, it's not a double tap.
-context.startTimeForDoubleTapMs = null;
-}
-
-var touches = [];
-for (var i = 0; i < event.touches.length; i++) {
-var t = event.touches[i];
-// we dispense with 'dragGetX_' because all touchBrowsers support pageX
-touches.push({
-pageX: t.pageX,
-pageY: t.pageY,
-dataX: g.toDataXCoord(t.pageX),
-dataY: g.toDataYCoord(t.pageY)
-// identifier: t.identifier
-});
-}
-context.initialTouches = touches;
-
-if (touches.length == 1) {
-// This is just a swipe.
-context.initialPinchCenter = touches[0];
-context.touchDirections = { x: true, y: true };
-
-// ADDITION - this needs to select the points
-//var closestTouchP = g.findClosestPoint(touches[0].pageX,touches[0].pageY);
-//if(closestTouchP) {
-//var selectionChanged = g.setSelection(closestTouchP.row, closestTouchP.seriesName);
-//}
-g.mouseMove_(event);
-
-} else if (touches.length >= 2) {
-// It's become a pinch!
-// In case there are 3+ touches, we ignore all but the "first" two.
-
-// only screen coordinates can be averaged (data coords could be log scale).
-context.initialPinchCenter = {
-pageX: 0.5 * (touches[0].pageX + touches[1].pageX),
-pageY: 0.5 * (touches[0].pageY + touches[1].pageY),
-
-// TODO(danvk): remove
-dataX: 0.5 * (touches[0].dataX + touches[1].dataX),
-dataY: 0.5 * (touches[0].dataY + touches[1].dataY)
-};
-
-// Make pinches in a 45-degree swath around either axis 1-dimensional zooms.
-var initialAngle = 180 / Math.PI * Math.atan2(
-context.initialPinchCenter.pageY - touches[0].pageY,
-touches[0].pageX - context.initialPinchCenter.pageX);
-
-// use symmetry to get it into the first quadrant.
-initialAngle = Math.abs(initialAngle);
-if (initialAngle > 90) initialAngle = 90 - initialAngle;
-
-context.touchDirections = {
-x: (initialAngle < (90 - 45/2)),
-y: (initialAngle > 45/2)
-};
-}
-
-// save the full x & y ranges.
-context.initialRange = {
-x: g.xAxisRange(),
-y: g.yAxisRange()
-};
-};
\ No newline at end of file
Code Review / policy / engine.git / blobdiff