98 lines
2.8 KiB
Rust
98 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 Line {
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fsm_state: LineToolFsmState,
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data: LineToolData,
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}
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impl Tool for Line {
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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 LineToolFsmState {
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Ready,
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LmbDown,
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}
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impl Default for LineToolFsmState {
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fn default() -> Self {
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LineToolFsmState::Ready
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}
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}
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#[derive(Clone, Debug, Default)]
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struct LineToolData {
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drag_start: ViewportPosition,
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}
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impl Fsm for LineToolFsmState {
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type ToolData = LineToolData;
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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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match (self, event) {
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(LineToolFsmState::Ready, Event::LmbDown(mouse_state)) => {
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data.drag_start = mouse_state.position;
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operations.push(Operation::MountWorkingFolder { path: vec![] });
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LineToolFsmState::LmbDown
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}
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(LineToolFsmState::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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LineToolFsmState::Ready
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}
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(LineToolFsmState::LmbDown, Event::MouseMove(mouse_state)) => {
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operations.push(Operation::ClearWorkingFolder);
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let start = data.drag_start;
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let end = mouse_state;
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operations.push(Operation::AddLine {
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path: vec![],
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insert_index: -1,
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x0: start.x as f64,
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y0: start.y as f64,
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x1: end.x as f64,
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y1: end.y as f64,
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style: style::PathStyle::new(Some(style::Stroke::new(tool_data.primary_color, 5.)), None),
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});
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LineToolFsmState::LmbDown
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}
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(LineToolFsmState::LmbDown, Event::LmbUp(mouse_state)) => {
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let distance = data.drag_start.distance(&mouse_state.position);
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log::info!("draw Line with distance: {:.2}", distance);
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operations.push(Operation::ClearWorkingFolder);
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let start = data.drag_start;
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let end = mouse_state.position;
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operations.push(Operation::AddLine {
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path: vec![],
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insert_index: -1,
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x0: start.x as f64,
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y0: start.y as f64,
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x1: end.x as f64,
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y1: end.y as f64,
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style: style::PathStyle::new(Some(style::Stroke::new(tool_data.primary_color, 5.)), None),
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});
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operations.push(Operation::CommitTransaction);
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LineToolFsmState::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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