| 1 | /** |
| 2 | * @fileoverview Test cases for toDomCoords/toDataCoords |
| 3 | * |
| 4 | * @author danvk@google.com (Dan Vanderkam) |
| 5 | */ |
| 6 | |
| 7 | var ToDomCoordsTestCase = TestCase("to-dom-coords"); |
| 8 | |
| 9 | var _origFunc = Dygraph.getContext; |
| 10 | ToDomCoordsTestCase.prototype.setUp = function() { |
| 11 | document.body.innerHTML = "<div id='graph'></div>"; |
| 12 | Dygraph.getContext = function(canvas) { |
| 13 | return new Proxy(_origFunc(canvas)); |
| 14 | } |
| 15 | }; |
| 16 | |
| 17 | ToDomCoordsTestCase.prototype.tearDown = function() { |
| 18 | Dygraph.getContext = _origFunc; |
| 19 | }; |
| 20 | |
| 21 | // Checks that toDomCoords and toDataCoords are inverses of one another. |
| 22 | ToDomCoordsTestCase.prototype.checkForInverses = function(g) { |
| 23 | var x_range = g.xAxisRange(); |
| 24 | var y_range = g.yAxisRange(); |
| 25 | for (var i = 0; i <= 10; i++) { |
| 26 | var x = x_range[0] + i / 10.0 * (x_range[1] - x_range[0]); |
| 27 | for (var j = 0; j <= 10; j++) { |
| 28 | var y = y_range[0] + j / 10.0 * (y_range[1] - y_range[0]); |
| 29 | assertEquals(x, g.toDataXCoord(g.toDomXCoord(x))); |
| 30 | assertEquals(y, g.toDataYCoord(g.toDomYCoord(y))); |
| 31 | } |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | ToDomCoordsTestCase.prototype.testPlainChart = function() { |
| 36 | var opts = { |
| 37 | drawXAxis: false, |
| 38 | drawYAxis: false, |
| 39 | drawXGrid: false, |
| 40 | drawYGrid: false, |
| 41 | rightGap: 0, |
| 42 | valueRange: [0, 100], |
| 43 | dateWindow: [0, 100], |
| 44 | width: 400, |
| 45 | height: 400, |
| 46 | colors: ['#ff0000'] |
| 47 | } |
| 48 | |
| 49 | var graph = document.getElementById("graph"); |
| 50 | g = new Dygraph(graph, [ [0,0], [100,100] ], opts); |
| 51 | |
| 52 | assertEquals([0, 100], g.toDataCoords(0, 0)); |
| 53 | assertEquals([0, 0], g.toDataCoords(0, 400)); |
| 54 | assertEquals([100, 100], g.toDataCoords(400, 0)); |
| 55 | assertEquals([100, 0], g.toDataCoords(400, 400)); |
| 56 | |
| 57 | this.checkForInverses(g); |
| 58 | |
| 59 | // TODO(konigsberg): This doesn't really belong here. Move to its own test. |
| 60 | var htx = g.hidden_ctx_; |
| 61 | assertEquals(1, CanvasAssertions.numLinesDrawn(htx, '#ff0000')); |
| 62 | } |
| 63 | |
| 64 | ToDomCoordsTestCase.prototype.testChartWithAxes = function() { |
| 65 | var opts = { |
| 66 | drawXAxis: true, |
| 67 | xAxisHeight: 50, |
| 68 | drawYAxis: true, |
| 69 | yAxisLabelWidth: 100, |
| 70 | axisTickSize: 0, |
| 71 | drawXGrid: false, |
| 72 | drawYGrid: false, |
| 73 | rightGap: 0, |
| 74 | valueRange: [0, 100], |
| 75 | dateWindow: [0, 100], |
| 76 | width: 500, |
| 77 | height: 450, |
| 78 | colors: ['#ff0000'] |
| 79 | } |
| 80 | |
| 81 | var graph = document.getElementById("graph"); |
| 82 | g = new Dygraph(graph, [ [0,0], [100,100] ], opts); |
| 83 | |
| 84 | assertEquals([0, 100], g.toDataCoords(100, 0)); |
| 85 | assertEquals([0, 0], g.toDataCoords(100, 400)); |
| 86 | assertEquals([100, 100], g.toDataCoords(500, 0)); |
| 87 | assertEquals([100, 0], g.toDataCoords(500, 400)); |
| 88 | |
| 89 | this.checkForInverses(g); |
| 90 | } |
| 91 | |
| 92 | ToDomCoordsTestCase.prototype.testChartWithAxesAndLabels = function() { |
| 93 | var opts = { |
| 94 | drawXAxis: true, |
| 95 | xAxisHeight: 50, |
| 96 | drawYAxis: true, |
| 97 | yAxisLabelWidth: 100, |
| 98 | axisTickSize: 0, |
| 99 | drawXGrid: false, |
| 100 | drawYGrid: false, |
| 101 | rightGap: 0, |
| 102 | valueRange: [0, 100], |
| 103 | dateWindow: [0, 100], |
| 104 | width: 500, |
| 105 | height: 500, |
| 106 | colors: ['#ff0000'], |
| 107 | ylabel: 'This is the y-axis', |
| 108 | xlabel: 'This is the x-axis', |
| 109 | xLabelHeight: 25, |
| 110 | title: 'This is the title of the chart', |
| 111 | titleHeight: 25 |
| 112 | } |
| 113 | |
| 114 | var graph = document.getElementById("graph"); |
| 115 | g = new Dygraph(graph, [ [0,0], [100,100] ], opts); |
| 116 | |
| 117 | assertEquals([0, 100], g.toDataCoords(100, 25)); |
| 118 | assertEquals([0, 0], g.toDataCoords(100, 425)); |
| 119 | assertEquals([100, 100], g.toDataCoords(500, 25)); |
| 120 | assertEquals([100, 0], g.toDataCoords(500, 425)); |
| 121 | |
| 122 | this.checkForInverses(g); |
| 123 | } |
| 124 | |
| 125 | ToDomCoordsTestCase.prototype.testYAxisLabelWidth = function() { |
| 126 | var opts = { |
| 127 | yAxisLabelWidth: 100, |
| 128 | axisTickSize: 0, |
| 129 | rightGap: 0, |
| 130 | valueRange: [0, 100], |
| 131 | dateWindow: [0, 100], |
| 132 | width: 500, |
| 133 | height: 500 |
| 134 | } |
| 135 | |
| 136 | var graph = document.getElementById("graph"); |
| 137 | g = new Dygraph(graph, [ [0,0], [100,100] ], opts); |
| 138 | |
| 139 | assertEquals([100, 0], g.toDomCoords(0, 100)); |
| 140 | assertEquals([500, 486], g.toDomCoords(100, 0)); |
| 141 | |
| 142 | g.updateOptions({ yAxisLabelWidth: 50 }); |
| 143 | assertEquals([50, 0], g.toDomCoords(0, 100)); |
| 144 | assertEquals([500, 486], g.toDomCoords(100, 0)); |
| 145 | } |
| 146 | |
| 147 | ToDomCoordsTestCase.prototype.testAxisTickSize = function() { |
| 148 | var opts = { |
| 149 | yAxisLabelWidth: 100, |
| 150 | axisTickSize: 0, |
| 151 | rightGap: 0, |
| 152 | valueRange: [0, 100], |
| 153 | dateWindow: [0, 100], |
| 154 | width: 500, |
| 155 | height: 500 |
| 156 | } |
| 157 | |
| 158 | var graph = document.getElementById("graph"); |
| 159 | g = new Dygraph(graph, [ [0,0], [100,100] ], opts); |
| 160 | |
| 161 | assertEquals([100, 0], g.toDomCoords(0, 100)); |
| 162 | assertEquals([500, 486], g.toDomCoords(100, 0)); |
| 163 | |
| 164 | g.updateOptions({ axisTickSize : 50 }); |
| 165 | assertEquals([200, 0], g.toDomCoords(0, 100)); |
| 166 | assertEquals([500, 386], g.toDomCoords(100, 0)); |
| 167 | } |