force size to be non-negative

Author: wash2

cosmic-panel-bin/src/space/layout.rs

@@ -328,14 +328,15 @@ impl PanelSpace {
             .sum::<i32>() as f64
             * self.scale
             + spacing_scaled * windows_left.len().saturating_sub(1) as f64;
-        let left_sum_scaled = if let Some(left_button) = left_overflow_button.as_ref() {
+        let mut left_sum_scaled = if let Some(left_button) = left_overflow_button.as_ref() {
             let size = left_button.geometry().size.to_f64() * self.scale;
             left_sum_scaled
                 + if self.config.is_horizontal() { size.w } else { size.h }
                 + spacing_scaled
         } else {
             left_sum_scaled
         };
+        left_sum_scaled = left_sum_scaled.max(0.0);
 
         let center =
             windows_center.iter().map(|e| map_fn(e, anchor, Alignment::Center, applet_padding));
@@ -346,14 +347,15 @@ impl PanelSpace {
             * self.scale
             + spacing_scaled * windows_center.len().saturating_sub(1) as f64;
 
-        let center_sum_scaled = if let Some(center_button) = center_overflow_button.as_ref() {
+        let mut center_sum_scaled = if let Some(center_button) = center_overflow_button.as_ref() {
             let size = center_button.geometry().size.to_f64() * self.scale;
             center_sum_scaled
                 + if self.config.is_horizontal() { size.w } else { size.h }
                 + spacing_scaled
         } else {
             center_sum_scaled
         };
+        center_sum_scaled = center_sum_scaled.max(0.0);
 
         let right =
             windows_right.iter().map(|e| map_fn(e, anchor, Alignment::Right, applet_padding));
@@ -364,14 +366,15 @@ impl PanelSpace {
             * self.scale
             + spacing_scaled * windows_right.len().saturating_sub(1) as f64;
 
-        let right_sum_scaled = if let Some(right_button) = right_overflow_button.as_ref() {
+        let mut right_sum_scaled = if let Some(right_button) = right_overflow_button.as_ref() {
             let size = right_button.geometry().size.to_f64() * self.scale;
             right_sum_scaled
                 + if self.config.is_horizontal() { size.w } else { size.h }
                 + spacing_scaled
         } else {
             right_sum_scaled
         };
+        right_sum_scaled = right_sum_scaled.max(0.0);
 
         let total_sum_scaled = left_sum_scaled + center_sum_scaled + right_sum_scaled;
         let new_list_length = (total_sum_scaled