Samuele Locatelli
98 lines
2.7 KiB
Plaintext
98 lines
2.7 KiB
Plaintext
@using MP.Data
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@inject IJSRuntime JSRuntime
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<canvas id="@Id"></canvas>
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@code {
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[Parameter]
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public string Id { get; set; } = "MyTs";
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[Parameter]
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public string Title { get; set; } = "DEMO Pie Chart";
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[Parameter]
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public string LegendPos { get; set; } = "right";
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[Parameter]
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public List<double> Data { get; set; } = new List<double>();
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[Parameter]
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public List<string> Labels { get; set; } = new List<string>();
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[Parameter]
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public List<string> lineColor { get; set; } = new List<string>();
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[Parameter]
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public List<string> backColor { get; set; } = new List<string>();
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[Parameter]
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public double AspRatio { get; set; } = 0;
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/// <summary>
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/// Inizializzazione rendering componente
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///
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/// partendo da qui:
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/// https://www.williamleme.com/posts/2020/003-chartjs-blazor/
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/// https://www.puresourcecode.com/dotnet/blazor/using-chart-js-with-blazor/
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/// https://www.tutorialsteacher.com/csharp/csharp-anonymous-type
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/// </summary>
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/// <param name="firstRender"></param>
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/// <returns></returns>
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protected override async Task OnAfterRenderAsync(bool firstRender)
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{
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await renderChart();
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}
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/// <summary>
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/// Inizializzazione rendering componente
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///
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/// partendo da qui:
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/// https://www.williamleme.com/posts/2020/003-chartjs-blazor/
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/// https://www.puresourcecode.com/dotnet/blazor/using-chart-js-with-blazor/
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/// https://www.tutorialsteacher.com/csharp/csharp-anonymous-type
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/// </summary>
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/// <returns></returns>
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protected async Task renderChart()
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{
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var showLegend = Labels.Count <= 15;
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var options = new Dictionary<string, object>
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{
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["responsive"] = true,
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["animation"] = false,
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["plugins"] = new
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{
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legend = new { display = showLegend, position = LegendPos },
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title = new { display = true, text = Title }
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}
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};
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if (AspRatio != 0)
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{
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options["aspectRatio"] = AspRatio;
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}
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// creazione di un oggetto anonymous type con tutte le opzioni da passare a chart.js
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var config = new
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{
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type = "pie",
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options,
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data = new
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{
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labels = Labels.ToArray(),
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datasets = new[]
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{
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new
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{
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data = Data,
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borderColor = lineColor,
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backgroundColor = backColor,
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hoverBorderWidth = 3
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}
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}
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}
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};
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await Task.Delay(50);
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await JSRuntime.InvokeVoidAsync("setup", Id, config);
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}
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} |