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SchedulerControl.CustomDrawDayViewAllDayArea Event

Enables the All-Day Area to be painted manually.

Namespace: DevExpress.XtraScheduler

Assembly: DevExpress.XtraScheduler.v22.1.dll

NuGet Package: DevExpress.Win.Scheduler

Declaration

public event CustomDrawObjectEventHandler CustomDrawDayViewAllDayArea

Event Data

The CustomDrawDayViewAllDayArea event's data class is CustomDrawObjectEventArgs. The following properties provide information specific to this event:

Property Description
Bounds Returns the bounding rectangle of the drawing area.
Cache Gets an object which specifies the storage for the pens, fonts and brushes. Use it for custom painting in Scheduler Reports.
Graphics Gets an object used for painting.
Handled Gets or sets whether an event was handled. If it was handled, the default actions are not required.
ObjectInfo Gets information on the painted element.

The event data class exposes the following methods:

Method Description
DrawDefault() Renders the element using the default drawing mechanism.

Remarks

The CustomDrawDayViewAllDayArea event fires before an All-Day Area is painted. The event parameter’s CustomDrawObjectEventArgs.ObjectInfo property provides the information required to paint an area. The value of this property should be typecast to the DevExpress.XtraScheduler.Drawing.SelectableIntervalViewInfo type.

Note

The CustomDrawDayViewAllDayArea event fires only for the Day View and Work Week View views.

Set the CustomDrawObjectEventArgs.Handled property to true to prohibit default area painting.

Example

This example demonstrates how to display scheduled time statistics in the All-Day Area. The IntervalLoadRatioCalculator object calculates work time loads.

CustomDrawDayViewAllDayArea_New

View Example

private void schedulerControl1_CustomDrawDayViewAllDayArea(object sender, DevExpress.XtraScheduler.CustomDrawObjectEventArgs e)
{
    if (schedulerStorage1.Appointments != null)
    {
        AllDayAreaCell cell = (AllDayAreaCell)e.ObjectInfo;
        Resource resource = cell.Resource;
        TimeInterval interval = cell.Interval;
        AppointmentBaseCollection apts = ((SchedulerControl)sender).Storage.GetAppointments(interval);
        float percent = CalcCurrentWorkTimeLoad(apts, interval, resource);
        Brush brush;
        if (percent == 0.0)
            brush = Brushes.LightYellow;
        else if (percent < 0.5)
            brush = Brushes.LightBlue;
        else brush = Brushes.LightCoral;
        e.Cache.FillRectangle(brush, e.Bounds);
        e.Cache.DrawString(string.Format("{0:P}", percent), cell.Appearance.Font, Brushes.Black, e.Bounds, cell.Appearance.TextOptions.GetStringFormat());
        e.Handled = true;
    }
}
private float CalcCurrentWorkTimeLoad(AppointmentBaseCollection apts, TimeInterval interval, Resource resource)
{
    AppointmentBaseCollection aptsByResource = new AppointmentBaseCollection();
    var aptQuery = apts.Where(a => a.ResourceId.Equals(resource.Id));
    aptsByResource.AddRange(aptQuery.ToList());

    IntervalLoadRatioCalculator calc = new IntervalLoadRatioCalculator(interval, aptsByResource);
    return calc.Calculate();
}
See Also