StyleSheet : Reserve space for valueChanged icon

Changes.md

@@ -30,6 +30,7 @@ Fixes
 - Display : Fixed shutdown crashes caused by Python slots connected to `driverCreatedSignal()` and `imageReceivedSignal()` [^1].
 - LightPositionTool : Fixed crash when changing the tool mode with nothing selected [^1].
 - ViewportGadget : Fixed selection issues with Intel GPUs (#901, #2788).
+- TransformTool : Fixed alignment of green "value changed" icon for `orientation` plugs.
 
 API
 ---
@@ -39,6 +40,7 @@ API
   - ProcessorWidget provides a base class for custom widgets, and a factory mechanism for registering them against processors.
   - SimpleProcessorWidget provides a base class for widgets with a simple summary label and optional action links.
 - TractorDispatcher : The `preSpoolSignal()` now provides an additional `taskData` argument to slots, which maps from Tractor tasks to information about the Gaffer tasks they will execute.
+- LabelPlugValueWidget : Added optional `labelPlugValueWidget:showValueChangedIndicator` metadata entry. If a plug has this entry set to `False`, the icon next to the label that indicates the value has changed will not be shown. Defaults to `True` if the value is not set.
 
 Breaking Changes
 ----------------

python/GafferUI/LabelPlugValueWidget.py

@@ -45,6 +45,8 @@
 # Supported plug metadata :
 #
 #  - "renameable"
+#  - "labelPlugValueWidget:showValueChangedIndicator" : If `False`, the indicator that the
+#  plug value has changed will not be shown. Defaults to `True` if not set.
 class LabelPlugValueWidget( GafferUI.PlugValueWidget ) :
 
 	## \todo Remove alignment arguments. Vertically the only alignment that looks good is `Center`, and
@@ -72,6 +74,17 @@ def __init__( self, plug, horizontalAlignment=GafferUI.Label.HorizontalAlignment
 		self.__label._qtWidget().setFixedHeight( 20 )
 		layout.addWidget( self.__label._qtWidget() )
 
+		self.__label._qtWidget().setProperty(
+			"gafferShowValueChangedIndicator",
+			all(
+				(
+					p.direction() == Gaffer.Plug.Direction.In and
+					Gaffer.Metadata.value( p, "labelPlugValueWidget:showValueChangedIndicator" ) != False
+				)
+				for p in self.getPlugs()
+			)
+		)
+
 		self.__editableLabel = None # we'll make this lazily as needed
 
 		# Connecting at front so we're called before the slots

python/GafferUI/SplinePlugValueWidget.py

@@ -98,6 +98,8 @@ def __buttonPress( self, button, event ) :
 	Gaffer.Metadata.registerValue( plugType, "interpolation", "plugValueWidget:type", "GafferUI.PresetsPlugValueWidget" )
 	for name, value in sorted( Gaffer.SplineDefinitionInterpolation.names.items() ):
 		Gaffer.Metadata.registerValue( plugType, "interpolation", "preset:" + name, value )
+	Gaffer.Metadata.registerValue( plugType, "p[0-9]*.x", "labelPlugValueWidget:showValueChangedIndicator", False )
+	Gaffer.Metadata.registerValue( plugType, "p[0-9]*.y", "labelPlugValueWidget:showValueChangedIndicator", False )
 
 ## \todo See comments for `ColorSwatchPlugValueWidget._ColorPlugValueDialogue`.
 # I think the best approach is probably to move the `acquire()` mechanism to the

python/GafferUI/_StyleSheet.py

@@ -239,21 +239,18 @@ def styleColor( key ) :
 		color: #b0d8fb;
 	}
 
-	QLabel#gafferPlugLabel {
+	QLabel#gafferPlugLabel[gafferShowValueChangedIndicator="true"] {
 		/*
-		QLabel's text layout seems to lurch from one approach
-		to another in the presence of non-zero padding. So we
-		need some padding here so that we get a layout that
-		matches the `gafferValueChanged="true"` styling below.
+		Ensure that there is enough space reserved for the `valueChanged`
+		icon whether it is visible or not.
 		*/
-		padding-left: 1px;
+		padding-left: 10px;
 	}
 
-	QLabel#gafferPlugLabel[gafferValueChanged="true"] {
+	QLabel#gafferPlugLabel[gafferShowValueChangedIndicator="true"][gafferValueChanged="true"] {
 		background-image: url(:/valueChanged.png);
 		background-repeat: no-repeat;
 		background-position: left;
-		padding-left: 16px;
 	}
 
 	QLabel#gafferDefaultRowLabel {