private MgdRenderingOptions CreateRenderingOptions(MgViewerRenderingOptions renderOpts)
{
if (null == _lastRenderOpts)
{
_lastRenderOpts = new MgdRenderingOptions(renderOpts.Format, renderOpts.Behavior, renderOpts.Color);
}
else
{
var color = _lastRenderOpts.GetSelectionColor();
if (!(color.Red == renderOpts.Color.Red &&
color.Green == renderOpts.Color.Green &&
color.Blue == renderOpts.Color.Blue &&
color.Alpha == renderOpts.Color.Alpha &&
_lastRenderOpts.GetBehavior() == renderOpts.Behavior &&
_lastRenderOpts.GetImageFormat() == renderOpts.Format))
{
_lastRenderOpts = new MgdRenderingOptions(renderOpts.Format, renderOpts.Behavior, renderOpts.Color);
}
}
return _lastRenderOpts;
}
public abstract MgByteReader RenderDynamicOverlay(MgSelectionBase selection, MgViewerRenderingOptions args);
private void UpdateSelectionRenderingOptions()
{
var value = this.SelectionColor;
if (_selectionRenderOpts != null)
{
var color = _selectionRenderOpts.Color;
if (color != null && (color.Red != value.R ||
color.Green != value.G ||
color.Blue != value.B))
{
_selectionRenderOpts = null;
_selectionRenderOpts = CreateSelectionRenderingOptions(value.R, value.G, value.B);
//Trace.TraceInformation("Selection color updated to ({0}, {1}, {2})", value.R, value.G, value.B);
}
}
}
/// <summary>
/// Initializes this viewer with the specified viewer provider, if the provider contains a map
/// it will load that as well. Otherwise a call to <see cref="LoadMap"/> is required afterwards
/// </summary>
/// <param name="provider">The provider.</param>
public void Init(MgMapViewerProvider provider)
{
if (_agfRW == null)
_agfRW = new MgAgfReaderWriter();
if (_wktRW == null)
_wktRW = new MgWktReaderWriter();
if (_geomFact == null)
_geomFact = new MgGeometryFactory();
_provider = provider;
if (_resSvc != null) //Forward looking, dispose the existing one as it may be of a different implementation
{
_resSvc.Dispose();
_resSvc = null;
}
_resSvc = (MgResourceService)_provider.CreateService(MgServiceType.ResourceService);
_overlayRenderOpts = CreateMapRenderingOptions(0, 0, 255);
_selectionRenderOpts = CreateSelectionRenderingOptions(0, 0, 255);
if (_provider != null)
{
_provider.MapLoaded -= OnMapSetOnProvider;
_provider = null;
}
_provider = provider;
_provider.MapLoaded += OnMapSetOnProvider;
var map = _provider.GetMap();
if (map != null)
OnMapSetOnProvider(this, EventArgs.Empty);
}
public override OSGeo.MapGuide.MgByteReader RenderDynamicOverlay(OSGeo.MapGuide.MgSelectionBase selection, MgViewerRenderingOptions args)
{
return _renderSvc.RenderDynamicOverlay(_implMap, selection as MgdSelection, CreateRenderingOptions(args));
}
public abstract MgByteReader RenderDynamicOverlay(MgSelectionBase selection, MgViewerRenderingOptions args);
