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| 1 | +use super::utility_types::guide::{Guide, GuideDirection, GuideId}; |
| 2 | +use crate::messages::portfolio::document::guide_message::{GuideMessage, GuideMessageDiscriminant}; |
| 3 | +use crate::messages::portfolio::document::overlays::guide_overlays::guide_overlay; |
| 4 | +use crate::messages::portfolio::document::utility_types::misc::PTZ; |
| 5 | +use crate::messages::prelude::*; |
| 6 | +use glam::DVec2; |
| 7 | + |
| 8 | +#[derive(Clone, Debug, serde::Serialize, serde::Deserialize, ExtractField)] |
| 9 | +#[serde(default)] |
| 10 | +pub struct GuideMessageHandler { |
| 11 | + #[serde(default)] |
| 12 | + pub guides: Vec<Guide>, |
| 13 | + #[serde(default = "default_guides_visible")] |
| 14 | + pub guides_visible: bool, |
| 15 | + #[serde(skip)] |
| 16 | + pub hovered_guide_id: Option<GuideId>, |
| 17 | +} |
| 18 | + |
| 19 | +fn default_guides_visible() -> bool { |
| 20 | + true |
| 21 | +} |
| 22 | + |
| 23 | +impl Default for GuideMessageHandler { |
| 24 | + fn default() -> Self { |
| 25 | + Self { |
| 26 | + guides: Vec::new(), |
| 27 | + guides_visible: true, |
| 28 | + hovered_guide_id: None, |
| 29 | + } |
| 30 | + } |
| 31 | +} |
| 32 | + |
| 33 | +#[derive(ExtractField)] |
| 34 | +pub struct GuideMessageContext<'a> { |
| 35 | + pub navigation_handler: &'a NavigationMessageHandler, |
| 36 | + pub document_ptz: &'a PTZ, |
| 37 | + pub viewport: &'a ViewportMessageHandler, |
| 38 | +} |
| 39 | + |
| 40 | +#[message_handler_data] |
| 41 | +impl MessageHandler<GuideMessage, GuideMessageContext<'_>> for GuideMessageHandler { |
| 42 | + fn actions(&self) -> ActionList { |
| 43 | + actions!(GuideMessageDiscriminant; ToggleGuidesVisibility) |
| 44 | + } |
| 45 | + |
| 46 | + fn process_message(&mut self, message: GuideMessage, responses: &mut VecDeque<Message>, context: GuideMessageContext) { |
| 47 | + let GuideMessageContext { |
| 48 | + navigation_handler, |
| 49 | + document_ptz, |
| 50 | + viewport, |
| 51 | + } = context; |
| 52 | + |
| 53 | + match message { |
| 54 | + GuideMessage::CreateGuide { id, direction, mouse_x, mouse_y } => { |
| 55 | + let document_to_viewport = navigation_handler.calculate_offset_transform(viewport.center_in_viewport_space().into(), document_ptz); |
| 56 | + let viewport_to_document = document_to_viewport.inverse(); |
| 57 | + |
| 58 | + let viewport_point = DVec2::new(mouse_x, mouse_y); |
| 59 | + let document_point = viewport_to_document.transform_point2(viewport_point); |
| 60 | + |
| 61 | + let document_position = match direction { |
| 62 | + GuideDirection::Horizontal => document_point.y, |
| 63 | + GuideDirection::Vertical => document_point.x, |
| 64 | + }; |
| 65 | + |
| 66 | + let guide = Guide::with_id(id, direction, document_position); |
| 67 | + self.guides.push(guide); |
| 68 | + responses.add(OverlaysMessage::Draw); |
| 69 | + responses.add(PortfolioMessage::UpdateDocumentWidgets); |
| 70 | + } |
| 71 | + GuideMessage::MoveGuide { id, mouse_x, mouse_y } => { |
| 72 | + let document_to_viewport = navigation_handler.calculate_offset_transform(viewport.center_in_viewport_space().into(), document_ptz); |
| 73 | + let viewport_to_document = document_to_viewport.inverse(); |
| 74 | + |
| 75 | + let viewport_point = DVec2::new(mouse_x, mouse_y); |
| 76 | + let document_point = viewport_to_document.transform_point2(viewport_point); |
| 77 | + |
| 78 | + if let Some(guide) = self.guides.iter_mut().find(|guide| guide.id == id) { |
| 79 | + guide.position = match guide.direction { |
| 80 | + GuideDirection::Horizontal => document_point.y, |
| 81 | + GuideDirection::Vertical => document_point.x, |
| 82 | + }; |
| 83 | + } |
| 84 | + responses.add(OverlaysMessage::Draw); |
| 85 | + } |
| 86 | + GuideMessage::DeleteGuide { id } => { |
| 87 | + self.guides.retain(|g| g.id != id); |
| 88 | + responses.add(OverlaysMessage::Draw); |
| 89 | + responses.add(PortfolioMessage::UpdateDocumentWidgets); |
| 90 | + } |
| 91 | + GuideMessage::GuideOverlays { context: mut overlay_context } => { |
| 92 | + if self.guides_visible { |
| 93 | + let document_to_viewport = navigation_handler.calculate_offset_transform(overlay_context.viewport.center_in_viewport_space().into(), document_ptz); |
| 94 | + guide_overlay(self, &mut overlay_context, document_to_viewport); |
| 95 | + } |
| 96 | + } |
| 97 | + GuideMessage::ToggleGuidesVisibility => { |
| 98 | + self.guides_visible = !self.guides_visible; |
| 99 | + responses.add(OverlaysMessage::Draw); |
| 100 | + responses.add(PortfolioMessage::UpdateDocumentWidgets); |
| 101 | + responses.add(MenuBarMessage::SendLayout); |
| 102 | + } |
| 103 | + GuideMessage::SetHoveredGuide { id } => { |
| 104 | + if self.hovered_guide_id != id { |
| 105 | + self.hovered_guide_id = id; |
| 106 | + responses.add(OverlaysMessage::Draw); |
| 107 | + } |
| 108 | + } |
| 109 | + } |
| 110 | + } |
| 111 | +} |
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