/// <summary>
/// Transforms for single component.
/// </summary>
/// <param name="ls">Layout state.</param>
/// <param name="rrea">Refresh request.</param>
protected void ComponentTransforms(LayoutState ls, RefreshRequestEventArgs rrea)
{
if (rrea.Component is IRequireTransforms irt)
{
var rect = ls.Layout.For(rrea.Component);
_trace.Verbose($"component-transforms {rrea.Component} {rrea.Axis} {rect}");
var ctx = new DefaultRenderContext(Surface, Components, ls.LayoutDimensions, rect, ls.Layout.RemainingRect, DataContext)
{
Type = RenderType.TransformsOnly
};
irt.Transforms(ctx);
}
}
/// <summary>
/// Component is requesting a refresh.
/// Mark the chart's data source dirty and render chart.
/// TODO get the DS to just refresh this CC.
/// This method is invoke-safe; it MAY be called from a different thread.
/// </summary>
/// <param name="cc">Component requesting refresh.</param>
/// <param name="rrea">The request parameter.</param>
private async void ChartComponent_RefreshRequest(ChartComponent cc, RefreshRequestEventArgs rrea)
{
_trace.Verbose($"refresh-request-cc '{cc.Name}' {cc} r:{rrea.Request} a:{rrea.Axis}");
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => {
if (Surface == null)
{
return;
}
try {
if (cc is IProvideDataSourceRenderer ipdsr)
{
var ds = DataSources.SingleOrDefault(dds => dds.Name == ipdsr.Renderer.DataSourceName);
if (ds != null)
{
ds.IsDirty = true;
}
RenderComponents(CurrentLayout);
}
else if (cc is IDataSourceRenderer idsr)
{
var ds = DataSources.SingleOrDefault(dds => dds.Name == idsr.DataSourceName);
if (ds != null)
{
ds.IsDirty = true;
}
RenderComponents(CurrentLayout);
}
else
{
// dispatch other kinds of refresh requests
if (rrea.Request == RefreshRequestType.LayoutDirty && rrea.Component is IRequireLayout)
{
ComponentRender(CurrentLayout, rrea);
}
else if (rrea.Request == RefreshRequestType.ValueDirty && rrea.Component is IRequireRender)
{
ComponentRender(CurrentLayout, rrea);
}
else if (rrea.Request == RefreshRequestType.TransformsDirty && cc is IRequireTransforms)
{
ComponentTransforms(CurrentLayout, rrea);
}
}
}
catch (Exception ex) {
_trace.Verbose($"{Name} ChartComponent_RefreshRequest.unhandled: {ex}");
}
});
}
/// <summary>
/// Render for single component.
/// </summary>
/// <param name="ls">Layout state.</param>
/// <param name="rrea">Refresh request.</param>
protected void ComponentRender(LayoutState ls, RefreshRequestEventArgs rrea)
{
if (rrea.Component is IRequireRender irr)
{
var rect = ls.Layout.For(rrea.Component);
_trace.Verbose($"component-render {rrea.Component} {rrea.Axis} {rect}");
if (rrea.Axis != AxisUpdateState.None)
{
// put axis limits into correct state for IRequireRender components
Phase_ResetAxes();
//Phase_AxisLimits((cc2) => cc2 is DataSeries && (cc2 is IProvideValueExtents));
Phase_AxisLimits(ValueExtents_DataSeries.Items);
}
var ctx = new DefaultRenderContext(Surface, Components, ls.LayoutDimensions, rect, ls.Layout.RemainingRect, DataContext)
{
Type = RenderType.Component
};
irr.Render(ctx);
if (rrea.Axis != AxisUpdateState.None)
{
// axes MUST be re-evaluated because this thing changed.
//Phase_AxisLimits((cc2) => !(cc2 is DataSeries) && (cc2 is IProvideValueExtents));
Phase_AxisLimits(ValueExtents_NotDataSeries.Items);
Phase_AxesFinalized(ls);
Phase_RenderPostAxesFinalized(ls);
Phase_RenderAxes(ls);
Phase_Transforms(ls);
}
else
{
if (rrea.Component is IRequireTransforms irt)
{
irt.Transforms(ctx);
}
}
}
}
