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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,70 +1 @@ | ||
| //! Handler for the pivot overlay visible on the selected layer(s) whilst using the Select tool which controls the center of rotation/scale and origin of the layer. | ||
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| use super::graph_modification_utils; | ||
| use crate::consts::PIVOT_DIAMETER; | ||
| use crate::messages::layout::utility_types::widget_prelude::*; | ||
| use crate::messages::portfolio::document::overlays::utility_types::OverlayContext; | ||
| use crate::messages::portfolio::document::utility_types::document_metadata::LayerNodeIdentifier; | ||
| use crate::messages::prelude::*; | ||
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| use glam::{DAffine2, DVec2}; | ||
| use std::collections::VecDeque; | ||
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| #[derive(Clone, Debug)] | ||
| pub struct Pivot { | ||
| /// The viewspace pivot position (if applicable) | ||
| pivot: Option<DVec2>, | ||
| viewport_pos: DVec2, | ||
| } | ||
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| impl Default for Pivot { | ||
| fn default() -> Self { | ||
| Self { | ||
| pivot: None, | ||
| viewport_pos: DVec2::ZERO, | ||
| } | ||
| } | ||
| } | ||
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| impl Pivot { | ||
| /// Calculates the transform that gets from normalized pivot to viewspace. | ||
| fn get_layer_pivot_transform(layer: LayerNodeIdentifier, document: &DocumentMessageHandler) -> DAffine2 { | ||
| document.metadata().transform_to_viewport(layer) | ||
| } | ||
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| pub fn update_pivot(&mut self, document: &DocumentMessageHandler, overlay_context: &mut OverlayContext) { | ||
| //log::debug!("adding_overlay for pivot at "); | ||
| if let Some(pivot) = self.pivot { | ||
| let viewport_transform = document.metadata().document_to_viewport; | ||
| let pivot = viewport_transform.transform_point2(pivot); | ||
| self.viewport_pos = pivot; | ||
| //log::debug!("adding_overlay for pivot at {:?}", pivot); | ||
| overlay_context.pivot(pivot); | ||
| } | ||
| } | ||
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| /// Answers if the pivot widget has changed (so we should refresh the tool bar at the top of the canvas). | ||
| pub fn should_refresh_pivot_position(&mut self) -> bool { | ||
| false | ||
| } | ||
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| /// Sets the viewport position of the pivot for all selected layers. | ||
| pub fn set_viewport_position(&mut self, position: DVec2, document: &DocumentMessageHandler, responses: &mut VecDeque<Message>) { | ||
| let viewport_transform = document.metadata().document_to_viewport.inverse(); | ||
| self.pivot = Some(viewport_transform.transform_point2(position)); | ||
| log::debug!("setting pivot to {:?}", self.pivot); | ||
| for layer in document.selected_nodes.selected_visible_layers(document.network(), document.metadata()) { | ||
| let transform = Self::get_layer_pivot_transform(layer, document); | ||
| let pivot = transform.inverse().transform_point2(position); | ||
| // Only update the pivot when computed position is finite. Infinite can happen when scale is 0. | ||
| if pivot.is_finite() { | ||
| responses.add(GraphOperationMessage::TransformSetPivot { layer, pivot }); | ||
| } | ||
| } | ||
| } | ||
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| /// Answers if the pointer is currently positioned over the pivot. | ||
| pub fn is_over(&self, mouse: DVec2) -> bool { | ||
| mouse.distance_squared(self.viewport_pos) < (PIVOT_DIAMETER / 2.).powi(2) | ||
| } | ||
| } |
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