fix(panes): show visual error when failing to resize panes (#2036)

* fix(panes): show visual error when failing to resize pane vertically/horizontally

* fix(resize): retry pane resize on rounding errors

* fix(resize): proper error when resizing other panes into fixed panes

* style(fmt): rustfmt

2 files changed, 12 insertions, 0 deletions

diff --git a/zellij-utils/src/errors.rs b/zellij-utils/src/errors.rs
index 4b7149ecc..d0e4fad25 100644
--- a/zellij-utils/src/errors.rs
+++ b/zellij-utils/src/errors.rs
@@ -495,6 +495,14 @@ open an issue on GitHub:
         source: anyhow::Error,
     },
 
+    // this is a temporary hack until we're able to merge custom errors from within the various
+    // crates themselves without having to move their payload types here
+    #[error("Cannot resize fixed panes")]
+    CantResizeFixedPanes { pane_ids: Vec<(u32, bool)> }, // bool: 0 => terminal_pane, 1 =>
+    // plugin_pane
+    #[error("Pane size remains unchanged")]
+    PaneSizeUnchanged,
+
     #[error("an error occured")]
     GenericError { source: anyhow::Error },
 }
diff --git a/zellij-utils/src/pane_size.rs b/zellij-utils/src/pane_size.rs
index 048ae3d65..66f66ad5a 100644
--- a/zellij-utils/src/pane_size.rs
+++ b/zellij-utils/src/pane_size.rs
@@ -79,6 +79,10 @@ impl Dimension {
         }
     }
 
+    pub fn set_percent(&mut self, percent: f64) {
+        self.constraint = Constraint::Percent(percent);
+    }
+
     pub fn set_inner(&mut self, inner: usize) {
         self.inner = inner;
     }