97 lines
2.8 KiB
Rust
97 lines
2.8 KiB
Rust
use crate::events::{Event, Response};
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use crate::events::{Key, ViewportPosition};
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use crate::tools::{Fsm, Tool};
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use crate::Document;
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use document_core::layers::style;
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use document_core::Operation;
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use super::DocumentToolData;
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#[derive(Default)]
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pub struct Pen {
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fsm_state: PenToolFsmState,
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data: PenToolData,
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}
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impl Tool for Pen {
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fn handle_input(&mut self, event: &Event, document: &Document, tool_data: &DocumentToolData) -> (Vec<Response>, Vec<Operation>) {
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let mut responses = Vec::new();
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let mut operations = Vec::new();
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self.fsm_state = self.fsm_state.transition(event, document, tool_data, &mut self.data, &mut responses, &mut operations);
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(responses, operations)
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}
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}
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#[derive(Clone, Copy, Debug, PartialEq, Eq)]
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enum PenToolFsmState {
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Ready,
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LmbDown,
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}
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impl Default for PenToolFsmState {
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fn default() -> Self {
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PenToolFsmState::Ready
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}
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}
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#[derive(Clone, Debug, Default)]
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struct PenToolData {
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points: Vec<ViewportPosition>,
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}
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impl Fsm for PenToolFsmState {
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type ToolData = PenToolData;
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fn transition(self, event: &Event, document: &Document, tool_data: &DocumentToolData, data: &mut Self::ToolData, _responses: &mut Vec<Response>, operations: &mut Vec<Operation>) -> Self {
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let stroke = style::Stroke::new(tool_data.primary_color, 5.);
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let fill = style::Fill::none();
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let style = style::PathStyle::new(Some(stroke), Some(fill));
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match (self, event) {
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(PenToolFsmState::Ready, Event::LmbDown(mouse_state)) => {
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operations.push(Operation::MountWorkingFolder { path: vec![] });
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data.points.push(mouse_state.position);
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PenToolFsmState::LmbDown
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}
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(PenToolFsmState::Ready, Event::KeyDown(Key::KeyZ)) => {
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if let Some(id) = document.root.list_layers().last() {
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operations.push(Operation::DeleteLayer { path: vec![*id] })
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}
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PenToolFsmState::Ready
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}
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(PenToolFsmState::LmbDown, Event::LmbUp(mouse_state)) => {
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data.points.push(mouse_state.position);
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PenToolFsmState::LmbDown
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}
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(PenToolFsmState::LmbDown, Event::MouseMove(mouse_state)) => {
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let mut points: Vec<_> = data.points.iter().map(|p| (p.x as f64, p.y as f64)).collect();
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points.push((mouse_state.x as f64, mouse_state.y as f64));
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operations.push(Operation::ClearWorkingFolder);
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operations.push(Operation::AddPen {
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path: vec![],
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insert_index: -1,
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points,
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style,
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});
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PenToolFsmState::LmbDown
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}
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(PenToolFsmState::LmbDown, Event::KeyDown(Key::KeyEnter)) => {
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let points = data.points.drain(..).map(|p| (p.x as f64, p.y as f64)).collect();
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operations.push(Operation::ClearWorkingFolder);
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operations.push(Operation::AddPen {
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path: vec![],
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insert_index: -1,
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points,
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style,
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});
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operations.push(Operation::CommitTransaction);
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PenToolFsmState::Ready
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}
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_ => self,
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}
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}
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}
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