populate pixel dims + dpi in PaneEntry

This makes those fields usable in `wezterm cli list --format json`.

This doesn't change the ABI of the mux protocol, but prior to
this commit, those fields were always 0.

refs: #2319

mux/src/renderable.rs

@@ -40,6 +40,8 @@ pub struct RenderableDimensions {
     /// expressed as a stable index.
     pub scrollback_top: StableRowIndex,
     pub dpi: u32,
+    pub pixel_width: usize,
+    pub pixel_height: usize,
 }
 impl_lua_conversion_dynamic!(RenderableDimensions);
 
@@ -127,6 +129,7 @@ pub fn terminal_get_lines(
 
 /// Implements Pane::get_dimensions for Terminal
 pub fn terminal_get_dimensions(term: &mut Terminal) -> RenderableDimensions {
+    let size = term.get_size();
     let screen = term.screen();
     RenderableDimensions {
         cols: screen.physical_cols,
@@ -135,5 +138,7 @@ pub fn terminal_get_dimensions(term: &mut Terminal) -> RenderableDimensions {
         physical_top: screen.visible_row_to_stable_row(0),
         scrollback_top: screen.phys_to_stable_row_index(0),
         dpi: screen.dpi,
+        pixel_width: size.pixel_width,
+        pixel_height: size.pixel_height,
     }
 }

mux/src/tab.rs

@@ -220,9 +220,9 @@ fn pane_tree(
                 size: TerminalSize {
                     cols: dims.cols,
                     rows: dims.viewport_rows,
-                    pixel_height: 0,
-                    pixel_width: 0,
-                    dpi: 0,
+                    pixel_height: dims.pixel_height,
+                    pixel_width: dims.pixel_width,
+                    dpi: dims.dpi,
                 },
                 working_dir: working_dir.map(Into::into),
                 workspace: workspace.to_string(),

term/src/terminalstate/mod.rs

@@ -844,6 +844,17 @@ impl TerminalState {
         }
     }
 
+    pub fn get_size(&self) -> TerminalSize {
+        let screen = self.screen();
+        TerminalSize {
+            dpi: self.dpi,
+            pixel_width: self.pixel_width,
+            pixel_height: self.pixel_height,
+            rows: screen.physical_rows,
+            cols: screen.physical_cols,
+        }
+    }
+
     /// When dealing with selection, mark a range of lines as dirty
     pub fn make_all_lines_dirty(&mut self) {
         let seqno = self.seqno;

wezterm-client/src/pane/clientpane.rs

@@ -74,6 +74,8 @@ impl ClientPane {
                     physical_top: 0,
                     scrollback_top: 0,
                     dpi: size.dpi,
+                    pixel_width: size.pixel_width,
+                    pixel_height: size.pixel_height,
                 },
                 title,
                 fetch_limiter,

wezterm-gui/src/termwindow/render.rs

@@ -951,6 +951,8 @@ impl super::TermWindow {
                     scrollback_top: 0,
                     viewport_rows: 1,
                     dpi: self.terminal_size.dpi,
+                    pixel_height: self.render_metrics.cell_size.height as usize,
+                    pixel_width: self.terminal_size.pixel_width,
                 },
                 config: &self.config,
                 cursor_border_color: LinearRgba::default(),

wezterm/src/main.rs

@@ -575,6 +575,9 @@ async fn resolve_pane_id(client: &Client, pane_id: Option<PaneId>) -> anyhow::Re
 struct CliListResultPtySize {
     rows: usize,
     cols: usize,
+    pixel_width: usize,
+    pixel_height: usize,
+    dpi: u32,
 }
 // This will be serialized to JSON via the 'List' command.
 // As such it is intended to be a stable output format,
@@ -600,7 +603,14 @@ impl From<mux::tab::PaneEntry> for CliListResultItem {
             workspace,
             title,
             working_dir,
-            size: TerminalSize { rows, cols, .. },
+            size:
+                TerminalSize {
+                    rows,
+                    cols,
+                    pixel_width,
+                    pixel_height,
+                    dpi,
+                },
             ..
         } = pane;
 
@@ -609,7 +619,13 @@ impl From<mux::tab::PaneEntry> for CliListResultItem {
             tab_id,
             pane_id,
             workspace,
-            size: CliListResultPtySize { rows, cols },
+            size: CliListResultPtySize {
+                rows,
+                cols,
+                pixel_width,
+                pixel_height,
+                dpi,
+            },
             title,
             cwd: working_dir
                 .as_ref()