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web/chart: fix sample (#909)
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@@ -22,11 +22,12 @@ class SelectionLineHighlight extends StatelessWidget {
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final List<charts.Series> seriesList;
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final bool animate;
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SelectionLineHighlight(this.seriesList, {this.animate});
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const SelectionLineHighlight(this.seriesList, {this.animate, Key key})
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: super(key: key);
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/// Creates a [LineChart] with sample data and no transition.
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factory SelectionLineHighlight.withSampleData() {
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return new SelectionLineHighlight(
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return SelectionLineHighlight(
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_createSampleData(),
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// Disable animations for image tests.
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animate: false,
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@@ -38,22 +39,22 @@ class SelectionLineHighlight 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 SelectionLineHighlight.withRandomData() {
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return new SelectionLineHighlight(_createRandomData());
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return SelectionLineHighlight(_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 data = [
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new LinearSales(0, random.nextInt(100)),
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new LinearSales(1, random.nextInt(100)),
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new LinearSales(2, random.nextInt(100)),
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new LinearSales(3, random.nextInt(100)),
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LinearSales(0, random.nextInt(100)),
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LinearSales(1, random.nextInt(100)),
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LinearSales(2, random.nextInt(100)),
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LinearSales(3, random.nextInt(100)),
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];
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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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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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@@ -75,7 +76,7 @@ class SelectionLineHighlight extends StatelessWidget {
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//
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// As an alternative, [defaultInteractions] can be set to true to include
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// the default chart interactions, including a LinePointHighlighter.
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return new charts.LineChart(seriesList, animate: animate, behaviors: [
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return charts.LineChart(seriesList, animate: animate, behaviors: [
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// Optional - Configures a [LinePointHighlighter] behavior with a
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// vertical follow line. A vertical follow line is included by
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// default, but is shown here as an example configuration.
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@@ -84,7 +85,7 @@ class SelectionLineHighlight extends StatelessWidget {
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// set by providing a [dashPattern] or it can be turned off by passing in
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// an empty list. An empty list is necessary because passing in a null
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// value will be treated the same as not passing in a value at 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.none,
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showVerticalFollowLine:
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@@ -94,21 +95,21 @@ class SelectionLineHighlight 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(eventTrigger: charts.SelectionTrigger.tapAndDrag)
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charts.SelectNearest(eventTrigger: charts.SelectionTrigger.tapAndDrag)
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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),
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new LinearSales(1, 25),
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new LinearSales(2, 100),
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new LinearSales(3, 75),
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LinearSales(0, 5),
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LinearSales(1, 25),
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LinearSales(2, 100),
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LinearSales(3, 75),
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];
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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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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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