inspector: termio pause/resume

src/inspector/Inspector.zig

@@ -1094,8 +1094,18 @@ fn renderTermioWindow(self: *Inspector) void {
         cimgui.c.ImGuiWindowFlags_NoFocusOnAppearing,
     )) return;
 
-    list: {
     const popup_filter = "Filter";
+
+    list: {
+        const pause_play: [:0]const u8 = if (self.vt_stream.handler.active)
+            "Pause##pause_play"
+        else
+            "Resume##pause_play";
+        if (cimgui.c.igButton(pause_play.ptr, .{ .x = 0, .y = 0 })) {
+            self.vt_stream.handler.active = !self.vt_stream.handler.active;
+        }
+
+        cimgui.c.igSameLine(0, cimgui.c.igGetStyle().*.ItemInnerSpacing.x);
         if (cimgui.c.igButton("Filter", .{ .x = 0, .y = 0 })) {
             cimgui.c.igOpenPopup_Str(
                 popup_filter,
@@ -1103,6 +1113,59 @@ fn renderTermioWindow(self: *Inspector) void {
             );
         }
 
+        if (!self.vt_events.empty()) {
+            cimgui.c.igSameLine(0, cimgui.c.igGetStyle().*.ItemInnerSpacing.x);
+            if (cimgui.c.igButton("Clear", .{ .x = 0, .y = 0 })) {
+                var it = self.vt_events.iterator(.forward);
+                while (it.next()) |v| v.deinit(self.surface.alloc);
+                self.vt_events.clear();
+            }
+        }
+
+        if (self.vt_events.empty()) {
+            cimgui.c.igText("Waiting for events...");
+            break :list;
+        }
+
+        cimgui.c.igSeparator();
+
+        _ = cimgui.c.igBeginTable(
+            "table_vt_events",
+            2,
+            cimgui.c.ImGuiTableFlags_RowBg |
+                cimgui.c.ImGuiTableFlags_Borders,
+            .{ .x = 0, .y = 0 },
+            0,
+        );
+        defer cimgui.c.igEndTable();
+
+        cimgui.c.igTableSetupColumn(
+            "Kind",
+            cimgui.c.ImGuiTableColumnFlags_WidthFixed,
+            0,
+            0,
+        );
+        cimgui.c.igTableSetupColumn(
+            "Description",
+            cimgui.c.ImGuiTableColumnFlags_WidthStretch,
+            0,
+            0,
+        );
+
+        var it = self.vt_events.iterator(.reverse);
+        while (it.next()) |ev| {
+            // Need to push an ID so that our selectable is unique.
+            cimgui.c.igPushID_Ptr(ev);
+            defer cimgui.c.igPopID();
+
+            cimgui.c.igTableNextRow(cimgui.c.ImGuiTableRowFlags_None, 0);
+            _ = cimgui.c.igTableSetColumnIndex(0);
+            cimgui.c.igText("%s", @tagName(ev.kind).ptr);
+            _ = cimgui.c.igTableSetColumnIndex(1);
+            cimgui.c.igText("%s", ev.str.ptr);
+        }
+    } // table
+
     if (cimgui.c.igBeginPopupModal(
         popup_filter,
         null,
@@ -1158,57 +1221,4 @@ fn renderTermioWindow(self: *Inspector) void {
             cimgui.c.igCloseCurrentPopup();
         }
     } // filter popup
-
-        if (!self.vt_events.empty()) {
-            cimgui.c.igSameLine(0, cimgui.c.igGetStyle().*.ItemInnerSpacing.x);
-            if (cimgui.c.igButton("Clear", .{ .x = 0, .y = 0 })) {
-                var it = self.vt_events.iterator(.forward);
-                while (it.next()) |v| v.deinit(self.surface.alloc);
-                self.vt_events.clear();
-            }
-        }
-
-        if (self.vt_events.empty()) {
-            cimgui.c.igText("Waiting for events...");
-            break :list;
-        }
-
-        cimgui.c.igSeparator();
-
-        _ = cimgui.c.igBeginTable(
-            "table_vt_events",
-            2,
-            cimgui.c.ImGuiTableFlags_RowBg |
-                cimgui.c.ImGuiTableFlags_Borders,
-            .{ .x = 0, .y = 0 },
-            0,
-        );
-        defer cimgui.c.igEndTable();
-
-        cimgui.c.igTableSetupColumn(
-            "Kind",
-            cimgui.c.ImGuiTableColumnFlags_WidthFixed,
-            0,
-            0,
-        );
-        cimgui.c.igTableSetupColumn(
-            "Description",
-            cimgui.c.ImGuiTableColumnFlags_WidthStretch,
-            0,
-            0,
-        );
-
-        var it = self.vt_events.iterator(.reverse);
-        while (it.next()) |ev| {
-            // Need to push an ID so that our selectable is unique.
-            cimgui.c.igPushID_Ptr(ev);
-            defer cimgui.c.igPopID();
-
-            cimgui.c.igTableNextRow(cimgui.c.ImGuiTableRowFlags_None, 0);
-            _ = cimgui.c.igTableSetColumnIndex(0);
-            cimgui.c.igText("%s", @tagName(ev.kind).ptr);
-            _ = cimgui.c.igTableSetColumnIndex(1);
-            cimgui.c.igText("%s", ev.str.ptr);
-        }
-    } // table
 }

src/inspector/termio.zig

@@ -66,6 +66,9 @@ pub const VTHandler = struct {
     /// of the inspector because this is pointer-stable.
     surface: *Surface,
 
+    /// True if the handler is currently recording.
+    active: bool = true,
+
     /// Exclude certain actions by tag.
     filter_exclude: ActionTagSet = ActionTagSet.initMany(&.{.print}),
     filter_text: *cimgui.c.ImGuiTextFilter,
@@ -87,6 +90,9 @@ pub const VTHandler = struct {
     pub fn handleManually(self: *VTHandler, action: terminal.Parser.Action) !bool {
         const insp = self.surface.inspector orelse return false;
 
+        // If we're pausing, then we ignore all events.
+        if (!self.active) return true;
+
         // We ignore certain action types that are too noisy.
         switch (action) {
             .dcs_put, .apc_put => return true,