commit popup centered

README.md

@@ -19,7 +19,7 @@ Over the last 2 years my go to GUI tool for this was [fork](https://git-fork.com
 * [x] support staging
 * [x] show added files on working dir changes
 * [x] support committing
-* [ ] popup centered
+* [x] popup centered
 * [ ] crash: adding a pic to index crashes
 * [ ] crash: renamed files cannot be added to index
 * [ ] allow selecting/diff index items

src/app.rs

@@ -186,7 +186,7 @@ impl App {
                     .block(Block::default().title("Commit").borders(Borders::ALL))
                     .alignment(Alignment::Left),
             )
-            .render(f, Rect::new(20, 0, 100, 10));
+            .render(f, git_utils::centered_rect(60, 20, f.size()));
         }
     }
 

src/git_utils.rs

@@ -1,5 +1,6 @@
 use git2::{DiffFormat, DiffOptions, Repository};
 use std::path::Path;
+use tui::layout::{Constraint, Direction, Layout, Rect};
 
 ///
 #[derive(Copy, Clone, PartialEq)]
@@ -103,3 +104,31 @@ pub fn commit(msg: &String) {
     )
     .unwrap();
 }
+
+/// use layouts to create a rects that
+/// centers inside `r` and sizes `percent_x`/`percent_x` of `r`
+pub fn centered_rect(percent_x: u16, percent_y: u16, r: Rect) -> Rect {
+    let popup_layout = Layout::default()
+        .direction(Direction::Vertical)
+        .constraints(
+            [
+                Constraint::Percentage((100 - percent_y) / 2),
+                Constraint::Percentage(percent_y),
+                Constraint::Percentage((100 - percent_y) / 2),
+            ]
+            .as_ref(),
+        )
+        .split(r);
+
+    Layout::default()
+        .direction(Direction::Horizontal)
+        .constraints(
+            [
+                Constraint::Percentage((100 - percent_x) / 2),
+                Constraint::Percentage(percent_x),
+                Constraint::Percentage((100 - percent_x) / 2),
+            ]
+            .as_ref(),
+        )
+        .split(popup_layout[1])[1]
+}