// NOTE: The code here is highly similar to RemoveChildCore in ModelVisual3D,
// but slightly different because the parent is 2D here.
void IVisual3DContainer.RemoveChild(Visual3D child)
{
int index = child.ParentIndex;
// It is invalid to modify the children collection that we
// might be iterating during a property invalidation tree walk.
if (IsVisualChildrenIterationInProgress)
{
throw new InvalidOperationException(SR.Get(SRID.CannotModifyVisualChildrenDuringTreeWalk));
}
Debug.Assert(child != null);
Debug.Assert(child.InternalVisualParent == this);
VisualDiagnostics.OnVisualChildChanged(this, child, false);
child.SetParent(/* newParent = */ (Visual)null); // CS0121: Call is ambigious without casting null to Visual.
// remove the inheritance context
if (_inheritanceContextForChildren != null)
{
_inheritanceContextForChildren.RemoveSelfAsInheritanceContext(child, null);
}
//
// Remove the child on all channels this visual is marshalled to.
//
for (int i = 0, limit = _proxy3D.Count; i < limit; i++)
{
DUCE.Channel channel = _proxy3D.GetChannel(i);
if (child.CheckFlagsAnd(channel, VisualProxyFlags.IsConnectedToParent))
{
child.SetFlags(channel, false, VisualProxyFlags.IsConnectedToParent);
DUCE.IResource childResource = (DUCE.IResource)child;
childResource.RemoveChildFromParent(this, channel);
childResource.ReleaseOnChannel(channel);
}
}
SetFlagsOnAllChannels(true, VisualProxyFlags.IsContentDirty);
//
// Force a full precompute and render pass for this visual.
//
Visual.PropagateFlags(
this,
VisualFlags.IsSubtreeDirtyForPrecompute,
VisualProxyFlags.IsSubtreeDirtyForRender);
//
child.FireOnVisualParentChanged(this);
OnVisualChildrenChanged(/* visualAdded = */ null, child);
}
/// <summary>
/// DisconnectChild
///
/// Derived classes must call this method to notify the Visual3D layer that a
/// child was removed from the children collection. The Visual3D layer will then call
/// GetVisual3DChild to find out which child has been removed.
///
/// </summary>
protected void RemoveVisual3DChild(Visual3D child)
{
// It is invalid to modify the children collection that we
// might be iterating during a property invalidation tree walk.
if (IsVisualChildrenIterationInProgress)
{
throw new InvalidOperationException(SR.Get(SRID.CannotModifyVisualChildrenDuringTreeWalk));
}
Debug.Assert(child != null);
Debug.Assert(child.InternalVisualParent == this);
child.SetParent(/* newParent = */ (Visual3D) null); // CS0121: Call is ambigious without casting null to Visual3D.
// remove the inheritance context
RemoveSelfAsInheritanceContext(child, null);
//
// Remove the child on all the channels
// this visual is being marshalled to.
//
for (int i = 0, limit = _proxy.Count; i < limit; i++)
{
DUCE.Channel channel = _proxy.GetChannel(i);
if (child.CheckFlagsAnd(channel, VisualProxyFlags.IsConnectedToParent))
{
child.SetFlags(channel, false, VisualProxyFlags.IsConnectedToParent);
DUCE.IResource childResource = (DUCE.IResource)child;
childResource.RemoveChildFromParent(this, channel);
childResource.ReleaseOnChannel(channel);
}
}
//
// Force a full precompute and render pass for this visual.
//
Visual3D.PropagateFlags(
this,
VisualFlags.IsSubtreeDirtyForPrecompute,
VisualProxyFlags.IsSubtreeDirtyForRender);
//
// Fire notifications
child.FireOnVisualParentChanged(this);
OnVisualChildrenChanged(/* visualAdded = */ null , child);
}
/// <summary>
/// Propagates the flags up to the root.
/// </summary>
/// <remarks>
/// The walk stops on a node with all of the required flags set.
/// </remarks>
internal static void PropagateFlags(
Visual3D e,
VisualFlags flags,
VisualProxyFlags proxyFlags)
{
while ((e != null) &&
(!e.CheckFlagsAnd(flags) || !e.CheckFlagsOnAllChannels(proxyFlags)))
{
// These asserts are mostly for documentation when diffing the 2D/3D
// implementations.
Debug.Assert(!e.CheckFlagsOr(VisualFlags.ShouldPostRender),
"Visual3Ds should never be the root of a tree.");
Debug.Assert(!e.CheckFlagsOr(VisualFlags.NodeIsCyclicBrushRoot),
"Visual3Ds should never be the root of an ICyclicBrush.");
e.SetFlags(true, flags);
e.SetFlagsOnAllChannels(true, proxyFlags);
// If our 3D parent is null call back into VisualTreeUtils to potentially
// continue the walk in 2D.
if (e._3DParent == null)
{
Viewport3DVisual viewport = e.InternalVisualParent as Viewport3DVisual;
Debug.Assert((viewport == null) == (e.InternalVisualParent == null),
"Viewport3DVisual is the only supported 2D parent of a 3D visual.");
if(viewport != null)
{
// We must notify the 2D visual that its contents have changed.
// This will cause the 2D visual to set it's content dirty flag
// and continue the propagation of IsDirtyForRender/Precompute.
viewport.Visual3DTreeChanged();
// continue propagating flags up the 2D world
Visual.PropagateFlags(viewport, flags, proxyFlags);
}
// Stop propagating. We are at the root of the 3D subtree.
return;
}
e = e._3DParent;
}
}
internal override void RenderContent(RenderContext ctx, bool isOnChannel)
{
DUCE.Channel channel = ctx.Channel;
//
// At this point, the visual has to be marshalled. Force
// marshalling of the camera and viewport in case we have
// just created a new visual resource.
//
Debug.Assert(IsOnChannel(channel));
VisualProxyFlags flags = _proxy.GetFlags(channel);
//
// Make sure the camera resource is being marshalled properly.
//
if ((flags & VisualProxyFlags.Viewport3DVisual_IsCameraDirty) != 0)
{
Camera camera = Camera;
if (camera != null)
{
DUCE.Viewport3DVisualNode.SetCamera(
((DUCE.IResource) this).GetHandle(channel),
((DUCE.IResource)camera).AddRefOnChannel(channel),
channel);
}
else if (isOnChannel) /* camera == null */
{
DUCE.Viewport3DVisualNode.SetCamera(
((DUCE.IResource) this).GetHandle(channel),
DUCE.ResourceHandle.Null,
channel);
}
SetFlags(channel, false, VisualProxyFlags.Viewport3DVisual_IsCameraDirty);
}
//
// Set the viewport if it's dirty.
//
if ((flags & VisualProxyFlags.Viewport3DVisual_IsViewportDirty) != 0)
{
DUCE.Viewport3DVisualNode.SetViewport(
((DUCE.IResource) this).GetHandle(channel),
Viewport,
channel);
SetFlags(channel, false, VisualProxyFlags.Viewport3DVisual_IsViewportDirty);
}
//we only want to recurse in the children if the visual does not have a bitmap effect
//or we are in the BitmapVisualManager render pass
// Visit children of this node -----------------------------------------------------------------------
Debug.Assert(!CheckFlagsAnd(channel, VisualProxyFlags.IsContentNodeConnected),
"Only HostVisuals are expected to have a content node.");
if (_children != null)
{
for (uint i = 0; i < _children.InternalCount; i++)
{
Visual3D child = _children.InternalGetItem((int)i);
if (child != null)
{
if (child.CheckFlagsAnd(channel, VisualProxyFlags.IsSubtreeDirtyForRender) || // or the visual is dirty
!(child.IsOnChannel(channel))) // or the child has not been marshalled yet.
{
child.RenderRecursive(ctx);
}
if (child.IsOnChannel(channel))
{
if (!child.CheckFlagsAnd(channel, VisualProxyFlags.IsConnectedToParent))
{
DUCE.Visual3DNode.InsertChildAt(
_proxy3D.GetHandle(channel),
((DUCE.IResource)child).GetHandle(channel),
/* iPosition = */ i,
channel);
child.SetFlags(channel, true, VisualProxyFlags.IsConnectedToParent);
}
}
}
}
}
}