feat: translation (#20836)

src/Avalonia.Base/Rendering/Composition/Server/ServerCompositionVisual/ServerCompositionVisual.Adorners.cs

@@ -52,7 +52,7 @@ partial class ServerCompositionVisual
             // We ignore Visual's RenderTransform completely since it's set by AdornerLayer and can be out of sync
             // with compositor-driver animations
             var ownTransform = MatrixUtils.ComputeTransform(Size, AnchorPoint, CenterPoint, Matrix.Identity, Scale,
-                RotationAngle, Orientation, Offset);
+                RotationAngle, Orientation, Offset + Translation);
             if (
                 AdornerLayer_GetExpectedSharedAncestor(this) is {} sharedAncestor
                 && ComputeTransformFromAncestor(AdornedVisual, sharedAncestor, out var adornerLayerToAdornedVisual))
@@ -63,7 +63,7 @@ partial class ServerCompositionVisual
         }
         else
             _ownTransform = MatrixUtils.ComputeTransform(Size, AnchorPoint, CenterPoint, TransformMatrix, Scale,
-                RotationAngle, Orientation, Offset);
+                RotationAngle, Orientation, Offset + Translation);
 
         
         PropagateFlags(true, true);
@@ -170,4 +170,4 @@ partial class ServerCompositionVisual
             _pools.IntStackPool.Return(ref _adornerPushedClipStack!);
         }
     }
-}
+}

src/Avalonia.Base/Rendering/Composition/Server/ServerCompositionVisual/ServerCompositionVisual.ComputedProperties.cs

@@ -148,7 +148,7 @@ partial class ServerCompositionVisual
         if (_combinedTransformDirty)
         {
             _ownTransform = MatrixUtils.ComputeTransform(Size, AnchorPoint, CenterPoint, TransformMatrix, Scale,
-                RotationAngle, Orientation, Offset);
+                RotationAngle, Orientation, Offset + Translation);
             
             setDirtyForRender = setDirtyBounds = true;
             
@@ -161,4 +161,4 @@ partial class ServerCompositionVisual
         _ownBoundsDirty = _clipSizeDirty = _combinedTransformDirty = _compositionFieldsDirty = false;
         PropagateFlags(setDirtyBounds, setDirtyForRender, setHasExtraDirtyRect);
     }
-}
+}

src/Avalonia.Base/Rendering/Composition/Server/ServerCompositionVisual/ServerCompositionVisual.DirtyInputs.cs

@@ -43,7 +43,9 @@ partial class ServerCompositionVisual
         | CompositionVisualChangedFields.Orientation
         | CompositionVisualChangedFields.OrientationAnimated
         | CompositionVisualChangedFields.Offset
-        | CompositionVisualChangedFields.OffsetAnimated;
+        | CompositionVisualChangedFields.OffsetAnimated
+        | CompositionVisualChangedFields.Translation
+        | CompositionVisualChangedFields.TranslationAnimated;
 
     private const CompositionVisualChangedFields ClipSizeDirtyMask =
         CompositionVisualChangedFields.Size
@@ -100,7 +102,8 @@ partial class ServerCompositionVisual
             || property == s_IdOfScaleProperty
             || property == s_IdOfRotationAngleProperty
             || property == s_IdOfOrientationProperty
-            || property == s_IdOfOffsetProperty) 
+            || property == s_IdOfOffsetProperty
+            || property == s_IdOfTranslationProperty) 
             TriggerCombinedTransformDirty();
 
         if (property == s_IdOfClipToBoundsProperty

src/Avalonia.Base/composition-schema.xml

@@ -22,6 +22,7 @@
         <Property Name="Clip" Type="Avalonia.Platform.IGeometryImpl?" Internal="true" />
         <Property Name="ClipToBounds" Type="bool" Animated="true" DefaultValue="true"/>
         <Property Name="Offset" Type="Vector3D" Animated="true"/>
+        <Property Name="Translation" Type="Vector3D" Animated="true"/>
         <Property Name="Size" Type="Vector" Animated="true"/>
         <Property Name="AnchorPoint" Type="Vector" Animated="true"/>
         <Property Name="CenterPoint" Type="Vector3D" Animated="true"/>