try alternate line algorithm

src/canvas/components/time_graph.rs

@@ -104,7 +104,7 @@ impl TimeGraph<'_> {
         if self.hide_x_labels {
             Axis::default().bounds(adjusted_x_bounds)
         } else {
-            let x_bound_left = ((-self.x_min) as u64 / 1000).to_string();
+            let x_bound_left = ((-self.x_min) as u64).to_string();
             let x_bound_right = "0s";
 
             let x_labels = vec![

src/canvas/components/time_graph/time_chart/canvas.rs

@@ -33,14 +33,14 @@ pub trait Shape {
 
 impl Shape for CanvasLine {
     fn draw(&self, painter: &mut Painter<'_, '_>) {
-        let (x1, y1) = match painter.get_point(self.x1, self.y1) {
-            Some(c) => c,
-            None => return,
+        let Some((x1, y1)) = painter.get_point(self.x1, self.y1) else {
+            return;
         };
-        let (x2, y2) = match painter.get_point(self.x2, self.y2) {
-            Some(c) => c,
-            None => return,
+
+        let Some((x2, y2)) = painter.get_point(self.x2, self.y2) else {
+            return;
         };
+
         let (dx, x_range) = if x2 >= x1 {
             (x2 - x1, x1..=x2)
         } else {
@@ -71,6 +71,39 @@ impl Shape for CanvasLine {
         } else {
             draw_line_high(painter, x1, y1, x2, y2, self.color);
         }
+
+        draw_line(painter, x1, y1, x2, y2, self.color);
+    }
+}
+
+/// Based on <https://github.com/gizak/termui/blob/master/drawille/drawille.go>
+fn draw_line(
+    painter: &mut Painter<'_, '_>, x1: usize, y1: usize, x2: usize, y2: usize, colour: Color,
+) {
+    let (left_point, right_point) = if x1 < x2 {
+        ((x1, y1), (x2, y2))
+    } else {
+        ((x2, y2), (x1, y1))
+    };
+
+    let dx = (left_point.0 as isize - right_point.0 as isize).abs();
+    let dy = (left_point.1 as isize - right_point.1 as isize).abs();
+
+    let slope = dy as f64 / dx as f64;
+    let slope_sign: isize = if left_point.1 < right_point.1 { 1 } else { -1 };
+
+    let mut target_y = left_point.1 as f64;
+    let mut current_y = left_point.1 as isize;
+
+    for current_x in (left_point.0)..(right_point.0) {
+        painter.paint(current_x, current_y as usize, colour);
+
+        target_y += slope * slope_sign as f64;
+
+        while current_y != target_y as isize && current_y >= 0 {
+            painter.paint(current_x, current_y as usize, colour);
+            current_y += slope_sign;
+        }
     }
 }
 

src/canvas/components/time_graph/time_chart/points.rs

@@ -46,7 +46,7 @@ impl TimeChart<'_> {
                 .iter_along_base(times)
                 .rev()
                 .map(|(&time, &val)| {
-                    let from_start = current_time.duration_since(time).as_millis() as f64 * -1.0;
+                    let from_start = current_time.duration_since(time).as_secs_f64() * -1.0;
 
                     // XXX: Should this be generic over dataset.graph_type instead? That would allow us to move
                     // transformations behind a type - however, that also means that there's some complexity added.

src/canvas/widgets/cpu_graph.rs

@@ -180,7 +180,7 @@ impl Painter {
             let data = app_state.data_store.get_data();
 
             let border_style = self.get_border_style(widget_id, app_state.current_widget.widget_id);
-            let x_min = -(cpu_widget_state.current_display_time as f64);
+            let x_min = -(cpu_widget_state.current_display_time as f64) / 1000.0;
             let hide_x_labels = should_hide_x_label(
                 app_state.app_config_fields.hide_time,
                 app_state.app_config_fields.autohide_time,

src/canvas/widgets/mem_graph.rs

@@ -62,7 +62,7 @@ impl Painter {
 
         if let Some(mem_state) = app_state.states.mem_state.widget_states.get_mut(&widget_id) {
             let border_style = self.get_border_style(widget_id, app_state.current_widget.widget_id);
-            let x_min = -(mem_state.current_display_time as f64);
+            let x_min = -(mem_state.current_display_time as f64) / 1000.0;
             let hide_x_labels = should_hide_x_label(
                 app_state.app_config_fields.hide_time,
                 app_state.app_config_fields.autohide_time,

src/canvas/widgets/network_graph.rs

@@ -67,7 +67,7 @@ impl Painter {
             let rx_points = &(shared_data.timeseries_data.rx);
             let tx_points = &(shared_data.timeseries_data.tx);
             let time = &(shared_data.timeseries_data.time);
-            let time_start = -(network_widget_state.current_display_time as f64);
+            let time_start = -(network_widget_state.current_display_time as f64) / 1000.0;
 
             let border_style = self.get_border_style(widget_id, app_state.current_widget.widget_id);
             let hide_x_labels = should_hide_x_label(