public AdornmentLayerElement(AdornmentPositioningBehavior behavior, SnapshotSpan? visualSpan, object tag, UIElement adornment, AdornmentRemovedCallback removedCallback) {
Adornment = adornment;
Behavior = behavior;
RemovedCallback = removedCallback;
Tag = tag;
VisualSpan = visualSpan;
}
public AdornmentLayerElement(AdornmentPositioningBehavior behavior, SnapshotSpan?visualSpan, object tag, UIElement adornment, AdornmentRemovedCallback removedCallback)
{
Adornment = adornment;
Behavior = behavior;
RemovedCallback = removedCallback;
Tag = tag;
VisualSpan = visualSpan;
}
public AdornmentAndData(AdornmentPositioningBehavior behavior, SnapshotSpan?visualSpan, object tag, AdornmentElement element, AdornmentRemovedCallback removedCallback)
{
_behavior = behavior;
_visualSpan = visualSpan;
_tag = tag;
_element = element;
_removedCallback = removedCallback;
}
public Marker(IWpfTextView textView, IAdornmentLayer adornmentLayer)
{
if (textView == null)
{
throw new ArgumentNullException(nameof(textView));
}
if (adornmentLayer == null)
{
throw new ArgumentNullException(nameof(adornmentLayer));
}
this.textView = textView;
this.adornmentLayer = adornmentLayer;
this.toMarkedLine = new Dictionary <object, MarkedLine>();
this.markedSpans = NullMarkerSpanCollection.Instance;
this.adornmentRemovedCallback = OnAdornmentRemoved;
}
bool AddAdornment(AdornmentTagInfo adornmentInfo)
{
var oldSize = adornmentInfo.TopUIElement.DesiredSize;
SizeChangedEventHandler sizeChanged = (a, e) => {
if (e.NewSize == oldSize)
{
return;
}
// Sometimes the size just gets changed very little, eg. from 400 to 399.95.....
const double d = 0.5;
if (Math.Abs(e.NewSize.Height - oldSize.Height) < d && Math.Abs(e.NewSize.Width - oldSize.Width) < d)
{
return;
}
oldSize = e.NewSize;
tagger?.RefreshSpans(new SnapshotSpanEventArgs(adornmentInfo.Span));
};
adornmentInfo.TopUIElement.SizeChanged += sizeChanged;
AdornmentRemovedCallback removedCallback = (a, b) => {
adornmentTagInfos.Remove(adornmentInfo);
adornmentInfo.TopUIElement.SizeChanged -= sizeChanged;
adornmentInfo.TopUIElement.OnRemoved();
adornmentInfo.TagSpan.Tag.RemovalCallback?.Invoke(adornmentInfo.TagSpan, b);
};
Debug.Assert(!adornmentTagInfos.Contains(adornmentInfo));
adornmentTagInfos.Add(adornmentInfo);
// Use OwnerControlled because there are corner cases that the adornment layer can't handle,
// eg. an adornment with buffer span length == 0 that is shown on its own line (word wrap).
bool added = layer.AddAdornment(AdornmentPositioningBehavior.OwnerControlled, null, adornmentInfo, adornmentInfo.TopUIElement, removedCallback);
if (!added)
{
removedCallback(null, adornmentInfo.TopUIElement);
}
return(added);
}
public bool AddAdornment(AdornmentPositioningBehavior behavior, SnapshotSpan? visualSpan, object tag, UIElement adornment, AdornmentRemovedCallback removedCallback) {
if (adornment == null)
throw new ArgumentNullException(nameof(adornment));
if (visualSpan == null && behavior == AdornmentPositioningBehavior.TextRelative)
throw new ArgumentNullException(nameof(visualSpan));
if ((uint)behavior > (uint)AdornmentPositioningBehavior.TextRelative)
throw new ArgumentOutOfRangeException(nameof(behavior));
if (layerKind != LayerKind.Normal) {
if (behavior != AdornmentPositioningBehavior.OwnerControlled)
throw new ArgumentOutOfRangeException(nameof(behavior), "Special layers must use AdornmentPositioningBehavior.OwnerControlled");
if (visualSpan != null)
throw new ArgumentOutOfRangeException(nameof(visualSpan), "Special layers must use a null visual span");
}
bool canAdd = visualSpan == null || TextView.TextViewLines.IntersectsBufferSpan(visualSpan.Value);
if (canAdd) {
var layerElem = new AdornmentLayerElement(behavior, visualSpan, tag, adornment, removedCallback);
layerElem.OnLayoutChanged(TextView.TextSnapshot);
Children.Add(layerElem.Adornment);
adornmentLayerElements.Add(layerElem);
}
return canAdd;
}
public LinkViewerLinkTag(UIElement adornment, AdornmentRemovedCallback removalCallback, PositionAffinity?affinity) : base(adornment, removalCallback, affinity)
{
}
public LinkViewerLinkTag(UIElement adornment, AdornmentRemovedCallback removalCallback) : base(adornment, removalCallback)
{
}
public bool AddAdornment(AdornmentPositioningBehavior behavior, SnapshotSpan?visualSpan, object tag, UIElement adornment, AdornmentRemovedCallback removedCallback)
{
throw new NotImplementedException();
}
public LinkViewerLinkTag(UIElement adornment, AdornmentRemovedCallback removalCallback, double?topSpace, double?baseline, double?textHeight, double?bottomSpace, PositionAffinity?affinity) : base(adornment, removalCallback, topSpace, baseline, textHeight, bottomSpace, affinity)
{
}
public static void AddAdornment(this IAdornmentLayer self, object tag, UIElement adornment,
AdornmentRemovedCallback removedCallback = null)
{
self.AddAdornment(AdornmentPositioningBehavior.OwnerControlled, null, tag, adornment, null);
}
public bool AddAdornment(AdornmentPositioningBehavior behavior, SnapshotSpan?visualSpan, object tag, UIElement adornment, AdornmentRemovedCallback removedCallback)
{
if (adornment == null)
{
throw new ArgumentNullException(nameof(adornment));
}
if (visualSpan == null && behavior == AdornmentPositioningBehavior.TextRelative)
{
throw new ArgumentNullException(nameof(visualSpan));
}
if ((uint)behavior > (uint)AdornmentPositioningBehavior.TextRelative)
{
throw new ArgumentOutOfRangeException(nameof(behavior));
}
if (layerKind != LayerKind.Normal)
{
if (behavior != AdornmentPositioningBehavior.OwnerControlled)
{
throw new ArgumentOutOfRangeException(nameof(behavior), "Special layers must use AdornmentPositioningBehavior.OwnerControlled");
}
if (visualSpan != null)
{
throw new ArgumentOutOfRangeException(nameof(visualSpan), "Special layers must use a null visual span");
}
}
bool canAdd = visualSpan == null || TextView.TextViewLines.IntersectsBufferSpan(visualSpan.Value);
if (canAdd)
{
var layerElem = new AdornmentLayerElement(behavior, visualSpan, tag, adornment, removedCallback);
layerElem.OnLayoutChanged(TextView.TextSnapshot);
Children.Add(layerElem.Adornment);
adornmentLayerElements.Add(layerElem);
}
return(canAdd);
}
public bool AddAdornment(AdornmentPositioningBehavior behavior, SnapshotSpan? visualSpan, object tag, UIElement adornment, AdornmentRemovedCallback removedCallback) {
throw new NotImplementedException();
}
public LinkViewerLinkTag(UIElement adornment, AdornmentRemovedCallback removalCallback, double? topSpace, double? baseline, double? textHeight, double? bottomSpace, PositionAffinity? affinity)
: base(adornment, removalCallback, topSpace, baseline, textHeight, bottomSpace, affinity)
{
}
public bool AddAdornment(AdornmentPositioningBehavior behavior, SnapshotSpan?visualSpan, object tag, AdornmentElement element, AdornmentRemovedCallback removedCallback)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
if (_isOverlayLayer && behavior != AdornmentPositioningBehavior.OwnerControlled)
{
throw new ArgumentOutOfRangeException("behavior", "Only AdornmentPositioningBehavior.OwnerControlled is supported");
}
if (IsTextRelative(behavior) && !visualSpan.HasValue)
{
throw new ArgumentNullException("visualSpan");
}
bool visible = true;
if (visualSpan.HasValue)
{
//Does the visual span intersect anything visible?
visible = _view.TextViewLines.IntersectsBufferSpan(visualSpan.Value);
}
if (visible)
{
AdornmentAndData data = new AdornmentAndData(behavior, visualSpan, tag, element, removedCallback);
_elements.Add(data);
Children.Add(element);
}
return(visible);
}
public LinkViewerLinkTag(UIElement adornment, AdornmentRemovedCallback removalCallback)
: base(adornment, removalCallback)
{
}
public LinkViewerLinkTag(UIElement adornment, AdornmentRemovedCallback removalCallback, PositionAffinity? affinity)
: base(adornment, removalCallback, affinity)
{
}
