From a7c5b8d78b636afb639cccef80561cec7b5c68cd Mon Sep 17 00:00:00 2001
From: Danilo Leal <67129314+danilo-leal@users.noreply.github.com>
Date: Fri, 24 Oct 2025 15:11:39 -0300
Subject: [PATCH] Add `ResetAllZoom` and `ResetAgentZoom ` actions (#41124)

Very often, when I'm testing or playing around with the zoom feature,
including the agent panel, I find myself missing one quick action that
would bring everything back to normal. That's what `ResetAllZoom` does.
If you have customized your zoom level in all areas of Zed, that action
returns everything to its default state. Similarly, if you're playing
around with zoom just in the agent panel, `ResetAgentZoom` does the same
in that context.

Release Notes:

- Added the `ResetAllZoom` and `ResetAgentZoom ` actions, allowing to
return the zoom level across the whole app and/or just in the agent
panel to its default/original value.
---
 crates/agent_ui/src/agent_panel.rs | 16 +++++++++++++++-
 crates/zed/src/zed.rs              | 18 ++++++++++++++++++
 crates/zed/src/zed/app_menus.rs    |  4 ++++
 crates/zed_actions/src/lib.rs      | 11 +++++++++++
 4 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/crates/agent_ui/src/agent_panel.rs b/crates/agent_ui/src/agent_panel.rs
index afce4d31c7..997a2bec09 100644
--- a/crates/agent_ui/src/agent_panel.rs
+++ b/crates/agent_ui/src/agent_panel.rs
@@ -72,7 +72,9 @@ use workspace::{
 };
 use zed_actions::{
     DecreaseBufferFontSize, IncreaseBufferFontSize, ResetBufferFontSize,
-    agent::{OpenAcpOnboardingModal, OpenOnboardingModal, OpenSettings, ResetOnboarding},
+    agent::{
+        OpenAcpOnboardingModal, OpenOnboardingModal, OpenSettings, ResetAgentZoom, ResetOnboarding,
+    },
     assistant::{OpenRulesLibrary, ToggleFocus},
 };
 
@@ -193,6 +195,13 @@ pub fn init(cx: &mut App) {
                 })
                 .register_action(|_workspace, _: &ResetTrialEndUpsell, _window, cx| {
                     TrialEndUpsell::set_dismissed(false, cx);
+                })
+                .register_action(|workspace, _: &ResetAgentZoom, window, cx| {
+                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
+                        panel.update(cx, |panel, cx| {
+                            panel.reset_agent_zoom(window, cx);
+                        });
+                    }
                 });
         },
     )
@@ -1102,6 +1111,11 @@ impl AgentPanel {
         }
     }
 
+    pub fn reset_agent_zoom(&mut self, _window: &mut Window, cx: &mut Context<Self>) {
+        theme::reset_agent_ui_font_size(cx);
+        theme::reset_agent_buffer_font_size(cx);
+    }
+
     pub fn toggle_zoom(&mut self, _: &ToggleZoom, window: &mut Window, cx: &mut Context<Self>) {
         if self.zoomed {
             cx.emit(PanelEvent::ZoomOut);
diff --git a/crates/zed/src/zed.rs b/crates/zed/src/zed.rs
index 972b34b17c..12a1bc8d50 100644
--- a/crates/zed/src/zed.rs
+++ b/crates/zed/src/zed.rs
@@ -870,6 +870,24 @@ fn register_actions(
                 }
             }
         })
+        .register_action({
+            let fs = app_state.fs.clone();
+            move |_, action: &zed_actions::ResetAllZoom, _window, cx| {
+                if action.persist {
+                    update_settings_file(fs.clone(), cx, move |settings, _| {
+                        settings.theme.ui_font_size = None;
+                        settings.theme.buffer_font_size = None;
+                        settings.theme.agent_ui_font_size = None;
+                        settings.theme.agent_buffer_font_size = None;
+                    });
+                } else {
+                    theme::reset_ui_font_size(cx);
+                    theme::reset_buffer_font_size(cx);
+                    theme::reset_agent_ui_font_size(cx);
+                    theme::reset_agent_buffer_font_size(cx);
+                }
+            }
+        })
         .register_action(|_, _: &install_cli::RegisterZedScheme, window, cx| {
             cx.spawn_in(window, async move |workspace, cx| {
                 install_cli::register_zed_scheme(cx).await?;
diff --git a/crates/zed/src/zed/app_menus.rs b/crates/zed/src/zed/app_menus.rs
index 2baf4f708c..ac22f97236 100644
--- a/crates/zed/src/zed/app_menus.rs
+++ b/crates/zed/src/zed/app_menus.rs
@@ -20,6 +20,10 @@ pub fn app_menus(cx: &mut App) -> Vec<Menu> {
             "Reset Zoom",
             zed_actions::ResetBufferFontSize { persist: false },
         ),
+        MenuItem::action(
+            "Reset All Zoom",
+            zed_actions::ResetAllZoom { persist: false },
+        ),
         MenuItem::separator(),
         MenuItem::action("Toggle Left Dock", workspace::ToggleLeftDock),
         MenuItem::action("Toggle Right Dock", workspace::ToggleRightDock),
diff --git a/crates/zed_actions/src/lib.rs b/crates/zed_actions/src/lib.rs
index b246ed9c47..3fc9903cdc 100644
--- a/crates/zed_actions/src/lib.rs
+++ b/crates/zed_actions/src/lib.rs
@@ -154,6 +154,15 @@ pub struct ResetUiFontSize {
     pub persist: bool,
 }
 
+/// Resets all zoom levels (UI and buffer font sizes, including in the agent panel) to their default values.
+#[derive(PartialEq, Clone, Default, Debug, Deserialize, JsonSchema, Action)]
+#[action(namespace = zed)]
+#[serde(deny_unknown_fields)]
+pub struct ResetAllZoom {
+    #[serde(default)]
+    pub persist: bool,
+}
+
 pub mod dev {
     use gpui::actions;
 
@@ -311,6 +320,8 @@ pub mod agent {
             /// Add the current selection as context for threads in the agent panel.
             #[action(deprecated_aliases = ["assistant::QuoteSelection", "agent::QuoteSelection"])]
             AddSelectionToThread,
+            /// Resets the agent panel zoom levels (agent UI and buffer font sizes).
+            ResetAgentZoom,
         ]
     );
 }