implement simple log view

2 files changed, 49 insertions, 0 deletions

diff --git a/src/widgets/logview.rs b/src/widgets/logview.rs
new file mode 100644
index 0000000..4259e35
--- /dev/null
+++ b/src/widgets/logview.rs
@@ -0,0 +1,48 @@
+use ratatui::{text::ToSpan, widgets::{block::BlockExt, Block, Widget}};
+
+use crate::lua::iobuffer::iobuffer;
+
+
+pub struct LogView<'a> {
+    block: Option<Block<'a>>
+}
+
+impl<'a> LogView<'a> {
+    pub fn new() -> Self {
+        Self { block: None }
+    }
+
+    pub fn block(mut self, block: Block<'a>) -> Self {
+        self.block = Some(block);
+        self
+    }
+}
+
+impl Widget for &mut LogView<'_> {
+    fn render(self, area: ratatui::prelude::Rect, buf: &mut ratatui::prelude::Buffer)
+    where
+        Self: Sized {
+        self.block.render(area, buf);
+        let inner_area = self.block.inner_if_some(area);
+
+        let lines = {
+            let buffer = iobuffer().read().unwrap();
+            buffer.get()
+        };
+
+        let mut line_area = inner_area.clone();
+        line_area.height = 1;
+        line_area.y = inner_area.y + inner_area.height - 1;
+
+        for line in lines.lines().rev() {
+            let line = line.to_span();
+            line.render(line_area, buf);
+
+            line_area.y -= 1;
+
+            if !inner_area.contains(line_area.into()) {
+                break;
+            }
+        }
+    }
+}
diff --git a/src/widgets/mod.rs b/src/widgets/mod.rs
index 8a9b1a0..48e6854 100644
--- a/src/widgets/mod.rs
+++ b/src/widgets/mod.rs
@@ -1,2 +1,3 @@
 pub mod sheetview;
 pub mod luaeditor;
+pub mod logview;