Differentiate between scale and dimensions (#570)

* Differentiate between scale and dimensions

* Fix layout and naming of properties

editor/src/document/properties_panel_message.rs

@@ -22,6 +22,8 @@ pub enum PropertiesPanelMessage {
 pub enum TransformOp {
 	X,
 	Y,
+	ScaleX,
+	ScaleY,
 	Width,
 	Height,
 	Rotation,

editor/src/document/properties_panel_message_handler.rs

@@ -18,10 +18,10 @@ use std::f64::consts::PI;
 use std::rc::Rc;
 
 trait DAffine2Utils {
-	fn width(&self) -> f64;
+	fn scale_x(&self) -> f64;
-	fn update_width(self, new_width: f64) -> Self;
+	fn update_scale_x(self, new_width: f64) -> Self;
-	fn height(&self) -> f64;
+	fn scale_y(&self) -> f64;
-	fn update_height(self, new_height: f64) -> Self;
+	fn update_scale_y(self, new_height: f64) -> Self;
 	fn x(&self) -> f64;
 	fn update_x(self, new_x: f64) -> Self;
 	fn y(&self) -> f64;
@@ -31,20 +31,20 @@ trait DAffine2Utils {
 }
 
 impl DAffine2Utils for DAffine2 {
-	fn width(&self) -> f64 {
+	fn scale_x(&self) -> f64 {
 		self.transform_vector2((1., 0.).into()).length()
 	}
 
-	fn update_width(self, new_width: f64) -> Self {
+	fn update_scale_x(self, new_width: f64) -> Self {
-		self * DAffine2::from_scale((new_width / self.width(), 1.).into())
+		self * DAffine2::from_scale((new_width / self.scale_x(), 1.).into())
 	}
 
-	fn height(&self) -> f64 {
+	fn scale_y(&self) -> f64 {
 		self.transform_vector2((0., 1.).into()).length()
 	}
 
-	fn update_height(self, new_height: f64) -> Self {
+	fn update_scale_y(self, new_height: f64) -> Self {
-		self * DAffine2::from_scale((1., new_height / self.height()).into())
+		self * DAffine2::from_scale((1., new_height / self.scale_y()).into())
 	}
 
 	fn x(&self) -> f64 {
@@ -66,14 +66,14 @@ impl DAffine2Utils for DAffine2 {
 	}
 
 	fn rotation(&self) -> f64 {
-		let cos = self.matrix2.col(0).x / self.width();
+		let cos = self.matrix2.col(0).x / self.scale_x();
-		let sin = self.matrix2.col(0).y / self.width();
+		let sin = self.matrix2.col(0).y / self.scale_x();
 		sin.atan2(cos)
 	}
 
 	fn update_rotation(self, new_rotation: f64) -> Self {
-		let width = self.width();
+		let width = self.scale_x();
-		let height = self.height();
+		let height = self.scale_y();
 		let half_width = width / 2.;
 		let half_height = height / 2.;
 
@@ -138,15 +138,21 @@ impl MessageHandler<PropertiesPanelMessage, &GrapheneDocument> for PropertiesPan
 				let action = match transform_op {
 					X => DAffine2::update_x,
 					Y => DAffine2::update_y,
-					Width => DAffine2::update_width,
+					ScaleX | Width => DAffine2::update_scale_x,
-					Height => DAffine2::update_height,
+					ScaleY | Height => DAffine2::update_scale_y,
 					Rotation => DAffine2::update_rotation,
 				};
 
+				let scale = match transform_op {
+					Width => layer.bounding_transform().scale_x() / layer.transform.scale_x(),
+					Height => layer.bounding_transform().scale_y() / layer.transform.scale_y(),
+					_ => 1.,
+				};
+
 				responses.push_back(
 					Operation::SetLayerTransform {
 						path: path.clone(),
-						transform: action(layer.transform, value).to_cols_array(),
+						transform: action(layer.transform, value / scale).to_cols_array(),
 					}
 					.into(),
 				);
@@ -297,7 +303,7 @@ fn node_section_transform(layer: &Layer) -> LayoutRow {
 				name: "".into(),
 				widgets: vec![
 					WidgetHolder::new(Widget::TextLabel(TextLabel {
-						value: "Position".into(),
+						value: "Location".into(),
 						..TextLabel::default()
 					})),
 					WidgetHolder::new(Widget::Separator(Separator {
@@ -336,6 +342,75 @@ fn node_section_transform(layer: &Layer) -> LayoutRow {
 					})),
 				],
 			},
+			LayoutRow::Row {
+				name: "".into(),
+				widgets: vec![
+					WidgetHolder::new(Widget::TextLabel(TextLabel {
+						value: "Rotation".into(),
+						..TextLabel::default()
+					})),
+					WidgetHolder::new(Widget::Separator(Separator {
+						separator_type: SeparatorType::Unrelated,
+						direction: SeparatorDirection::Horizontal,
+					})),
+					WidgetHolder::new(Widget::NumberInput(NumberInput {
+						value: layer.transform.rotation() * 180. / PI,
+						label: "".into(),
+						unit: "°".into(),
+						on_update: WidgetCallback::new(|number_input: &NumberInput| {
+							PropertiesPanelMessage::ModifyTransform {
+								value: number_input.value / 180. * PI,
+								transform_op: TransformOp::Rotation,
+							}
+							.into()
+						}),
+						..NumberInput::default()
+					})),
+				],
+			},
+			LayoutRow::Row {
+				name: "".into(),
+				widgets: vec![
+					WidgetHolder::new(Widget::TextLabel(TextLabel {
+						value: "Scale".into(),
+						..TextLabel::default()
+					})),
+					WidgetHolder::new(Widget::Separator(Separator {
+						separator_type: SeparatorType::Unrelated,
+						direction: SeparatorDirection::Horizontal,
+					})),
+					WidgetHolder::new(Widget::NumberInput(NumberInput {
+						value: layer.transform.scale_x(),
+						label: "X".into(),
+						unit: "".into(),
+						on_update: WidgetCallback::new(|number_input: &NumberInput| {
+							PropertiesPanelMessage::ModifyTransform {
+								value: number_input.value,
+								transform_op: TransformOp::ScaleX,
+							}
+							.into()
+						}),
+						..NumberInput::default()
+					})),
+					WidgetHolder::new(Widget::Separator(Separator {
+						separator_type: SeparatorType::Related,
+						direction: SeparatorDirection::Horizontal,
+					})),
+					WidgetHolder::new(Widget::NumberInput(NumberInput {
+						value: layer.transform.scale_y(),
+						label: "Y".into(),
+						unit: "".into(),
+						on_update: WidgetCallback::new(|number_input: &NumberInput| {
+							PropertiesPanelMessage::ModifyTransform {
+								value: number_input.value,
+								transform_op: TransformOp::ScaleY,
+							}
+							.into()
+						}),
+						..NumberInput::default()
+					})),
+				],
+			},
 			LayoutRow::Row {
 				name: "".into(),
 				widgets: vec![
@@ -348,7 +423,7 @@ fn node_section_transform(layer: &Layer) -> LayoutRow {
 						direction: SeparatorDirection::Horizontal,
 					})),
 					WidgetHolder::new(Widget::NumberInput(NumberInput {
-						value: layer.transform.width(),
+						value: layer.bounding_transform().scale_x(),
 						label: "W".into(),
 						unit: " px".into(),
 						on_update: WidgetCallback::new(|number_input: &NumberInput| {
@@ -365,7 +440,7 @@ fn node_section_transform(layer: &Layer) -> LayoutRow {
 						direction: SeparatorDirection::Horizontal,
 					})),
 					WidgetHolder::new(Widget::NumberInput(NumberInput {
-						value: layer.transform.height(),
+						value: layer.bounding_transform().scale_y(),
 						label: "H".into(),
 						unit: " px".into(),
 						on_update: WidgetCallback::new(|number_input: &NumberInput| {
@@ -379,32 +454,6 @@ fn node_section_transform(layer: &Layer) -> LayoutRow {
 					})),
 				],
 			},
-			LayoutRow::Row {
-				name: "".into(),
-				widgets: vec![
-					WidgetHolder::new(Widget::TextLabel(TextLabel {
-						value: "Rotation".into(),
-						..TextLabel::default()
-					})),
-					WidgetHolder::new(Widget::Separator(Separator {
-						separator_type: SeparatorType::Unrelated,
-						direction: SeparatorDirection::Horizontal,
-					})),
-					WidgetHolder::new(Widget::NumberInput(NumberInput {
-						value: layer.transform.rotation() * 180. / PI,
-						label: "R".into(),
-						unit: "°".into(),
-						on_update: WidgetCallback::new(|number_input: &NumberInput| {
-							PropertiesPanelMessage::ModifyTransform {
-								value: number_input.value / 180. * PI,
-								transform_op: TransformOp::Rotation,
-							}
-							.into()
-						}),
-						..NumberInput::default()
-					})),
-				],
-			},
 		],
 	}
 }

editor/src/document/transformation.rs

@@ -221,7 +221,7 @@ impl<'a> Selected<'a> {
 					.document
 					.layer(path)
 					.unwrap()
-					.current_bounding_box_with_transform(multiplied_transform)
+					.aabounding_box_for_transform(multiplied_transform)
 					.unwrap_or([multiplied_transform.translation; 2]);
 
 				(bounds[0] + bounds[1]) / 2.

editor/src/viewport_tools/tools/gradient_tool.rs

@@ -81,7 +81,7 @@ impl Default for GradientToolFsmState {
 
 /// Computes the transform from gradient space to layer space (where gradient space is 0..1 in layer space)
 fn gradient_space_transform(path: &[LayerId], layer: &Layer, document: &DocumentMessageHandler) -> DAffine2 {
-	let bounds = layer.current_bounding_box().unwrap();
+	let bounds = layer.aabounding_box().unwrap();
 	let bound_transform = DAffine2::from_scale_angle_translation(bounds[1] - bounds[0], 0., bounds[0]);
 
 	document.graphene_document.multiply_transforms(&path[..path.len() - 1]).unwrap() * bound_transform

editor/src/viewport_tools/tools/text_tool.rs

@@ -166,7 +166,7 @@ fn update_overlays(document: &DocumentMessageHandler, data: &mut TextToolData, r
 			.graphene_document
 			.layer(layer_path)
 			.unwrap()
-			.current_bounding_box_with_transform(document.graphene_document.multiply_transforms(layer_path).unwrap())
+			.aabounding_box_for_transform(document.graphene_document.multiply_transforms(layer_path).unwrap())
 			.unwrap();
 
 		let operation = Operation::SetLayerTransformInViewport {

graphene/src/layers/layer_info.rs

@@ -146,12 +146,23 @@ impl Layer {
 		self.data.intersects_quad(transformed_quad, path, intersections)
 	}
 
-	pub fn current_bounding_box_with_transform(&self, transform: DAffine2) -> Option<[DVec2; 2]> {
+	pub fn aabounding_box_for_transform(&self, transform: DAffine2) -> Option<[DVec2; 2]> {
 		self.data.bounding_box(transform)
 	}
 
-	pub fn current_bounding_box(&self) -> Option<[DVec2; 2]> {
+	pub fn aabounding_box(&self) -> Option<[DVec2; 2]> {
-		self.current_bounding_box_with_transform(self.transform)
+		self.aabounding_box_for_transform(self.transform)
+	}
+	pub fn bounding_transform(&self) -> DAffine2 {
+		let scale = match self.aabounding_box_for_transform(DAffine2::IDENTITY) {
+			Some([a, b]) => {
+				let dimensions = b - a;
+				DAffine2::from_scale(dimensions)
+			}
+			_ => DAffine2::IDENTITY,
+		};
+
+		self.transform * scale
 	}
 
 	pub fn as_folder_mut(&mut self) -> Result<&mut FolderLayer, DocumentError> {