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web/chart: fix sample (#909)
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@@ -41,11 +41,12 @@ class SelectionScatterPlotHighlight extends StatelessWidget {
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final List<charts.Series> seriesList;
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final bool animate;
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SelectionScatterPlotHighlight(this.seriesList, {this.animate});
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const SelectionScatterPlotHighlight(this.seriesList, {this.animate, Key key})
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: super(key: key);
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/// Creates a [ScatterPlotChart] with sample data and no transition.
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factory SelectionScatterPlotHighlight.withSampleData() {
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return new SelectionScatterPlotHighlight(
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return SelectionScatterPlotHighlight(
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_createSampleData(),
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// Disable animations for image tests.
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animate: false,
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@@ -57,49 +58,49 @@ class SelectionScatterPlotHighlight extends StatelessWidget {
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// It is used for creating random series data to demonstrate animation in
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// the example app only.
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factory SelectionScatterPlotHighlight.withRandomData() {
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return new SelectionScatterPlotHighlight(_createRandomData());
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return SelectionScatterPlotHighlight(_createRandomData());
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}
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/// Create random data.
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static List<charts.Series<LinearSales, num>> _createRandomData() {
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final random = new Random();
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final random = Random();
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final makeRadius = (int value) => (random.nextInt(value) + 2).toDouble();
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makeRadius(int value) => (random.nextInt(value) + 2).toDouble();
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final data = [
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new LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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'circle', null, null),
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new LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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null, null, null),
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new LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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null, null, null),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6), null,
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null, null),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6), null,
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null, null),
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// Render a hollow circle, filled in with white.
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new LinearSales(random.nextInt(100), random.nextInt(100),
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makeRadius(4) + 4, 'circle', charts.MaterialPalette.white, 2.0),
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new LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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null, null, null),
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new LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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null, null, null),
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new LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(4) + 4,
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'circle', charts.MaterialPalette.white, 2.0),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6), null,
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null, null),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6), null,
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null, null),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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'circle', null, null),
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new LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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null, null, null),
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new LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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null, null, null),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6), null,
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null, null),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6), null,
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null, null),
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// Render a hollow circle, filled in with white.
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new LinearSales(random.nextInt(100), random.nextInt(100),
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makeRadius(4) + 4, 'circle', charts.MaterialPalette.white, 2.0),
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new LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6),
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null, null, null),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(4) + 4,
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'circle', charts.MaterialPalette.white, 2.0),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(6), null,
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null, null),
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// Render a hollow square, filled in with white.
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new LinearSales(random.nextInt(100), random.nextInt(100),
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makeRadius(4) + 4, null, charts.MaterialPalette.white, 2.0),
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LinearSales(random.nextInt(100), random.nextInt(100), makeRadius(4) + 4,
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null, charts.MaterialPalette.white, 2.0),
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];
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final maxMeasure = 100;
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const maxMeasure = 100;
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return [
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new charts.Series<LinearSales, int>(
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charts.Series<LinearSales, int>(
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id: 'Sales',
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colorFn: (LinearSales sales, _) {
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// Color bucket the measure column value into 3 distinct colors.
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@@ -131,7 +132,7 @@ class SelectionScatterPlotHighlight extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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return new charts.ScatterPlotChart(seriesList,
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return charts.ScatterPlotChart(seriesList,
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animate: animate,
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behaviors: [
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// Optional - Configures a [LinePointHighlighter] behavior with
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@@ -143,7 +144,7 @@ class SelectionScatterPlotHighlight extends StatelessWidget {
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// in an empty list. An empty list is necessary because passing in a
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// null value will be treated the same as not passing in a value at
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// all.
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new charts.LinePointHighlighter(
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charts.LinePointHighlighter(
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showHorizontalFollowLine:
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charts.LinePointHighlighterFollowLineType.nearest,
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showVerticalFollowLine:
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@@ -153,44 +154,42 @@ class SelectionScatterPlotHighlight extends StatelessWidget {
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// highlighter. Changing the trigger to tap and drag allows the
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// highlighter to follow the dragging gesture but it is not
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// recommended to be used when pan/zoom behavior is enabled.
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new charts.SelectNearest(
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charts.SelectNearest(
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eventTrigger: charts.SelectionTrigger.tapAndDrag),
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],
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// Configure the point renderer to have a map of custom symbol
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// renderers.
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defaultRenderer:
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new charts.PointRendererConfig<num>(customSymbolRenderers: {
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'circle': new charts.CircleSymbolRenderer(),
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'rect': new charts.RectSymbolRenderer(),
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charts.PointRendererConfig<num>(customSymbolRenderers: {
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'circle': charts.CircleSymbolRenderer(),
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'rect': charts.RectSymbolRenderer(),
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}));
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}
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/// Create one series with sample hard coded data.
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static List<charts.Series<LinearSales, int>> _createSampleData() {
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final data = [
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new LinearSales(0, 5, 3.0, 'circle', null, null),
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new LinearSales(10, 25, 5.0, null, null, null),
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new LinearSales(12, 75, 4.0, null, null, null),
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LinearSales(0, 5, 3.0, 'circle', null, null),
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LinearSales(10, 25, 5.0, null, null, null),
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LinearSales(12, 75, 4.0, null, null, null),
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// Render a hollow circle, filled in with white.
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new LinearSales(
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13, 225, 5.0, 'circle', charts.MaterialPalette.white, 2.0),
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new LinearSales(16, 50, 4.0, null, null, null),
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new LinearSales(24, 75, 3.0, null, null, null),
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new LinearSales(25, 100, 3.0, 'circle', null, null),
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new LinearSales(34, 150, 5.0, null, null, null),
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new LinearSales(37, 10, 4.5, null, null, null),
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LinearSales(13, 225, 5.0, 'circle', charts.MaterialPalette.white, 2.0),
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LinearSales(16, 50, 4.0, null, null, null),
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LinearSales(24, 75, 3.0, null, null, null),
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LinearSales(25, 100, 3.0, 'circle', null, null),
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LinearSales(34, 150, 5.0, null, null, null),
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LinearSales(37, 10, 4.5, null, null, null),
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// Render a hollow circle, filled in with white.
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new LinearSales(
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45, 300, 8.0, 'circle', charts.MaterialPalette.white, 2.0),
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new LinearSales(52, 15, 4.0, null, null, null),
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LinearSales(45, 300, 8.0, 'circle', charts.MaterialPalette.white, 2.0),
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LinearSales(52, 15, 4.0, null, null, null),
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// Render a hollow square, filled in with white.
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new LinearSales(56, 200, 7.0, null, charts.MaterialPalette.white, 2.0),
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LinearSales(56, 200, 7.0, null, charts.MaterialPalette.white, 2.0),
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];
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final maxMeasure = 300;
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const maxMeasure = 300;
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return [
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new charts.Series<LinearSales, int>(
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charts.Series<LinearSales, int>(
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id: 'Sales',
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// Providing a color function is optional.
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colorFn: (LinearSales sales, _) {
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