From d68ec217a81161eb1c331dcfc8a02c4b3b032747 Mon Sep 17 00:00:00 2001
From: Joscha <joscha@plugh.de>
Date: Wed, 23 Feb 2022 18:14:39 +0100
Subject: [PATCH] Resize rooms pane via dragging

---
 cove-tui/src/ui.rs | 45 +++++++++++++++++++++++++++++++++------------
 1 file changed, 33 insertions(+), 12 deletions(-)

diff --git a/cove-tui/src/ui.rs b/cove-tui/src/ui.rs
index 7289d65..c4d2aa0 100644
--- a/cove-tui/src/ui.rs
+++ b/cove-tui/src/ui.rs
@@ -1,10 +1,11 @@
 use std::io::Stdout;
 
-use crossterm::event::{Event, EventStream, KeyCode, KeyEvent, MouseEvent};
+use crossterm::event::{Event, EventStream, KeyCode, KeyEvent, MouseEvent, MouseEventKind};
 use futures::StreamExt;
 use tokio::sync::mpsc::{self, UnboundedReceiver, UnboundedSender};
 use tui::backend::CrosstermBackend;
-use tui::widgets::Paragraph;
+use tui::layout::{Constraint, Direction, Layout};
+use tui::widgets::{Block, Borders, Paragraph};
 use tui::{Frame, Terminal};
 
 pub type Backend = CrosstermBackend<Stdout>;
@@ -22,7 +23,8 @@ enum EventHandleResult {
 
 pub struct Ui {
     event_tx: UnboundedSender<UiEvent>,
-    rooms_width: i32,
+    rooms_width: u16,
+    rooms_dragging: bool,
     log: Vec<String>,
 }
 
@@ -31,6 +33,7 @@ impl Ui {
         Self {
             event_tx,
             rooms_width: 24,
+            rooms_dragging: false,
             log: vec!["Hello world!".to_string()],
         }
     }
@@ -117,26 +120,44 @@ impl Ui {
     }
 
     async fn handle_mouse_event(&mut self, event: MouseEvent) -> anyhow::Result<EventHandleResult> {
-        Ok(match event.kind {
-            // MouseEventKind::Down(_) => todo!(),
-            // MouseEventKind::Up(_) => todo!(),
-            // MouseEventKind::Drag(_) => todo!(),
+        match event.kind {
+            MouseEventKind::Down(_) if event.column == self.rooms_width => {
+                self.rooms_dragging = true;
+            }
+            MouseEventKind::Up(_) => {
+                self.rooms_dragging = false;
+            }
+            MouseEventKind::Drag(_) if self.rooms_dragging => {
+                self.rooms_width = event.column;
+            }
             // MouseEventKind::Moved => todo!(),
             // MouseEventKind::ScrollDown => todo!(),
             // MouseEventKind::ScrollUp => todo!(),
-            _ => EventHandleResult::Continue,
-        })
+            _ => {}
+        }
+        Ok(EventHandleResult::Continue)
     }
 
     async fn render(&mut self, frame: &mut Frame<'_, Backend>) -> anyhow::Result<()> {
-        let scroll = if self.log.len() as u16 > frame.size().height {
-            self.log.len() as u16 - frame.size().height
+        let outer = Layout::default()
+            .direction(Direction::Horizontal)
+            .constraints([
+                Constraint::Length(self.rooms_width),
+                Constraint::Length(1),
+                Constraint::Min(0),
+            ])
+            .split(frame.size());
+
+        frame.render_widget(Block::default().borders(Borders::RIGHT), outer[1]);
+
+        let scroll = if self.log.len() as u16 > outer[2].height {
+            self.log.len() as u16 - outer[2].height
         } else {
             0
         };
         frame.render_widget(
             Paragraph::new(self.log.join("\n")).scroll((scroll, 0)),
-            frame.size(),
+            outer[2],
         );
         Ok(())
     }