public ActionResult GetChartImage(ChartFormModel chartFormModel)
{
if (chartFormModel == null)
{
return(null);
}
byte[] chartBytes = null;
switch (chartFormModel.ChartName)
{
case "FuelEfficiency":
chartBytes = GetChartBytes(chartFormModel.UserId, x => x.AverageFuelEfficiency, Resources.ChartController_AverageFuelEfficiencyChart_Title, chartFormModel);
break;
case "TotalDistance":
chartBytes = GetChartBytes(chartFormModel.UserId, x => x.TotalDistance, Resources.ChartController_TotalDistance_Title, chartFormModel);
break;
case "TotalCost":
chartBytes = GetChartBytes(chartFormModel.UserId, x => x.TotalCost, Resources.ChartController_TotalCost_Title, chartFormModel);
break;
}
if (chartBytes != null)
{
return(new FileContentResult(chartBytes, "image/jpeg"));
}
return(new FilePathResult(this.Url.Content("~/Content/trans_pixel.gif"), "image/gif"));
}
private ActionResult SetupChartFormModel(ChartFormModel chartFormModel)
{
chartFormModel.AllVehicleModels = Using <GetVehicleListForUser>()
.Execute(chartFormModel.UserId).ToArray();
//Set default chart values
if (string.IsNullOrEmpty(chartFormModel.ChartName))
{
chartFormModel.ChartName = "FuelEfficiency";
var firstModel = chartFormModel.AllVehicleModels.FirstOrDefault();
if (firstModel != null)
{
chartFormModel.VehicleIds.Add(firstModel.VehicleId);
}
}
return(new ContentTypeAwareResult(chartFormModel));
}
public ActionResult Index(ChartFormModel chartFormModel)
{
chartFormModel.UserId = this.CurrentUser.Id;
return(SetupChartFormModel(chartFormModel));
}
private byte[] GetChartBytes(int userId, Func <StatisticSeriesEntry, double> yValueAccessor, string chartTitle, ChartFormModel chartFormModel)
{
Debug.Assert(yValueAccessor != null);
int chartWidth = DESKTOP_CHART_WIDTH;
int chartHeight = DESKTOP_CHART_HEIGHT;
StatisticSeries seriesData = new StatisticSeries();
if (Request.Browser.IsMobileDevice)
{
chartWidth = Math.Min(Request.Browser.ScreenPixelsWidth, MOBILE_CHART_MAXWIDTH);
foreach (var vehicleId in chartFormModel.VehicleIds)
{
var seriesDataForVehicle = this.chartDataService.CalculateSeriesForVehicle(userId, vehicleId, chartFormModel.StartDate, chartFormModel.EndDate);
foreach (StatisticSeriesEntry statisticSeriesEntry in seriesDataForVehicle.Entries)
{
seriesData.Entries.Add(statisticSeriesEntry);
}
}
}
else
{
seriesData = this.chartDataService.CalculateSeriesForUser(userId, DateTime.UtcNow.AddMonths(-12), null);
}
var selectedVehicleColors = new List <string>();
if (chartFormModel.Positions == null)
{
selectedVehicleColors.Add(colors[0]);
}
else
{
foreach (var position in chartFormModel.Positions)
{
selectedVehicleColors.Add(colors[position]);
}
}
var themeColors = string.Join(";", selectedVehicleColors);
var theme = string.Format(CHARTS_THEME, themeColors);
var myChart = GetChartInstance(chartWidth, chartHeight, theme);
if (!Request.Browser.IsMobileDevice)
{
myChart.AddTitle(chartTitle).AddLegend();
}
if (PlotMultipleChartLine(myChart, seriesData.Entries, yValueAccessor))
{
return(myChart.GetBytes("jpeg"));
}
return(null);
}
