2017-03-22 10:05:10 +00:00
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use cairo;
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use ui_model::Color;
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2017-03-23 15:04:24 +00:00
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use ui::UI;
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2017-03-22 10:05:10 +00:00
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use shell::{Shell, NvimMode};
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2017-03-24 19:23:22 +00:00
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use nvim::{RepaintMode, RedrawEvents};
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2017-03-23 15:04:24 +00:00
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use std::sync::{Arc, Mutex};
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2017-03-22 10:05:10 +00:00
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2017-03-22 15:37:34 +00:00
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use glib;
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2017-03-23 15:04:24 +00:00
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struct Alpha(f64);
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impl Alpha {
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pub fn show(&mut self, step: f64) -> bool {
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self.0 += step;
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if self.0 > 1.0 {
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self.0 = 1.0;
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false
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} else {
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true
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}
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}
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pub fn hide(&mut self, step: f64) -> bool {
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self.0 -= step;
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if self.0 < 0.0 {
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self.0 = 0.0;
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false
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} else {
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true
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}
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}
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}
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enum AnimPhase {
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2017-03-24 19:23:22 +00:00
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Shown(i32),
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2017-03-23 15:04:24 +00:00
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Hide,
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2017-03-24 19:23:22 +00:00
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Hidden(i32),
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2017-03-23 15:04:24 +00:00
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Show,
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}
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2017-03-24 19:23:22 +00:00
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impl AnimPhase {
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fn sub(&mut self, step: i32) -> bool {
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match self {
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&mut AnimPhase::Shown(ref mut val) |
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&mut AnimPhase::Hidden(ref mut val) => {
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*val -= step;
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if *val <= 0 {
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false
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} else {
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true
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}
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}
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_ => false,
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}
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}
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}
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2017-03-23 15:04:24 +00:00
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pub struct State {
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alpha: Alpha,
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anim_phase: AnimPhase,
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}
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impl State {
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pub fn new() -> State {
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2017-03-24 19:23:22 +00:00
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State {
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2017-03-23 15:04:24 +00:00
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alpha: Alpha(1.0),
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2017-03-24 19:23:22 +00:00
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anim_phase: AnimPhase::Shown(500),
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2017-03-23 15:04:24 +00:00
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}
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}
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}
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2017-03-22 10:05:10 +00:00
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pub struct Cursor {
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2017-03-23 15:04:24 +00:00
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timer: Option<glib::SourceId>,
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state: Arc<Mutex<State>>,
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2017-03-22 10:05:10 +00:00
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}
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impl Cursor {
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pub fn new() -> Cursor {
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2017-03-24 19:23:22 +00:00
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2017-03-23 15:04:24 +00:00
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Cursor {
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timer: None,
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state: Arc::new(Mutex::new(State::new())),
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}
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}
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pub fn start(&mut self) {
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if self.timer.is_none() {
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let state = self.state.clone();
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self.timer = Some(glib::timeout_add(100, move || {
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let mut mut_state = state.lock().unwrap();
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2017-03-24 19:23:22 +00:00
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// wait
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// [TODO]: Implement wait through new timeout - 2017-03-24 10:21
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if mut_state.anim_phase.sub(100) {
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return glib::Continue(true);
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}
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2017-03-23 15:04:24 +00:00
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match mut_state.anim_phase {
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2017-03-24 19:23:22 +00:00
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AnimPhase::Shown(_) => {
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2017-03-23 15:04:24 +00:00
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mut_state.anim_phase = AnimPhase::Hide;
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}
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AnimPhase::Hide => {
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2017-03-24 19:23:22 +00:00
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if !mut_state.alpha.hide(0.3) {
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mut_state.anim_phase = AnimPhase::Hidden(300);
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2017-03-23 15:04:24 +00:00
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}
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}
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2017-03-24 19:23:22 +00:00
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AnimPhase::Hidden(_) => {
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2017-03-23 15:04:24 +00:00
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mut_state.anim_phase = AnimPhase::Show;
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}
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AnimPhase::Show => {
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2017-03-24 19:23:22 +00:00
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if !mut_state.alpha.show(0.3) {
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mut_state.anim_phase = AnimPhase::Shown(500);
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2017-03-23 15:04:24 +00:00
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}
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}
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}
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SHELL!(&shell = {
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2017-03-24 19:23:22 +00:00
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let point = shell.model.cur_point();
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shell.on_redraw(&RepaintMode::Area(point));
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2017-03-23 15:04:24 +00:00
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});
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glib::Continue(true)
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}));
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}
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2017-03-22 10:05:10 +00:00
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}
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2017-03-24 19:23:22 +00:00
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pub fn draw(&self,
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ctx: &cairo::Context,
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shell: &Shell,
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char_width: f64,
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line_height: f64,
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line_y: f64,
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double_width: bool,
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bg: &Color) {
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2017-03-23 15:04:24 +00:00
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2017-03-22 10:05:10 +00:00
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let current_point = ctx.get_current_point();
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2017-03-23 15:04:24 +00:00
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let state = self.state.lock().unwrap();
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2017-03-24 19:23:22 +00:00
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ctx.set_source_rgba(1.0 - bg.0, 1.0 - bg.1, 1.0 - bg.2, 0.6 * state.alpha.0);
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2017-03-22 10:05:10 +00:00
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let cursor_width = if shell.mode == NvimMode::Insert {
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char_width / 5.0
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} else {
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if double_width {
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char_width * 2.0
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} else {
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char_width
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}
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};
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ctx.rectangle(current_point.0, line_y, cursor_width, line_height);
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ctx.fill();
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}
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}
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2017-03-22 15:37:34 +00:00
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2017-03-23 15:04:24 +00:00
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impl Drop for Cursor {
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fn drop(&mut self) {
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if let Some(timer_id) = self.timer {
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glib::source_remove(timer_id);
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2017-03-22 15:37:34 +00:00
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}
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}
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}
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