fix(header_bar): increase compact height

Increases Compact header height to 40 (from 36), to better accommodate larger widgets (e.g. the search bar). This makes it distinct from the SSD header, which is now addressed by the `_` match case.
Also makes the horizontal header padding fixed at 8, so that the app window padding can also be 8.

src/app/core.rs

@@ -3,7 +3,7 @@
 
 use std::collections::HashMap;
 
-use crate::{config::CosmicTk, widget::nav_bar};
+use crate::widget::nav_bar;
 use cosmic_config::CosmicConfigEntry;
 use cosmic_theme::ThemeMode;
 use iced::window;

src/app/mod.rs

@@ -48,8 +48,6 @@ pub mod message {
 pub use self::command::Command;
 pub use self::core::Core;
 pub use self::settings::Settings;
-use crate::config::interface_density;
-use crate::cosmic_theme::Density;
 use crate::prelude::*;
 use crate::theme::THEME;
 use crate::widget::{context_drawer, horizontal_space, id_container, menu, nav_bar, popover};
@@ -654,11 +652,6 @@ impl<App: Application> ApplicationExt for App {
             .focused_window()
             .is_some_and(|i| i == self.main_window_id());
 
-        let padding = match interface_density() {
-            Density::Compact => 2,
-            _ => 8,
-        };
-
         let content_row = crate::widget::row::with_children({
             let mut widgets = Vec::with_capacity(4);
 
@@ -739,7 +732,7 @@ impl<App: Application> ApplicationExt for App {
         let content: Element<_> = if core.window.content_container {
             content_row
                 .apply(crate::widget::container)
-                .padding([0, padding, padding, padding])
+                .padding([0, 8, 8, 8])
                 .width(iced::Length::Fill)
                 .height(iced::Length::Fill)
                 .style(crate::theme::Container::WindowBackground)

src/widget/header_bar.rs

@@ -277,10 +277,10 @@ impl<'a, Message: Clone + 'static> HeaderBar<'a, Message> {
         end.push(widget::horizontal_space(Length::Fixed(12.0)).into());
         end.push(self.window_controls());
 
-        let (height, padding) = match self.density.unwrap_or_else(crate::config::header_size) {
-            Density::Compact => (36.0, 2.0),
-            Density::Spacious => (48.0, 8.0),
-            Density::Standard => (48.0, 8.0),
+        let height = match self.density.unwrap_or_else(crate::config::header_size) {
+            Density::Compact => 40.0,
+            Density::Spacious => 48.0,
+            Density::Standard => 48.0,
         };
 
         // Creates the headerbar widget.
@@ -316,8 +316,8 @@ impl<'a, Message: Clone + 'static> HeaderBar<'a, Message> {
             )
             .align_items(iced::Alignment::Center)
             .height(Length::Fixed(height))
-            .padding(padding)
-            .spacing(padding)
+            .padding([0, 8])
+            .spacing(8)
             .apply(widget::container)
             .style(crate::theme::Container::HeaderBar {
                 focused: self.focused,
@@ -387,13 +387,6 @@ impl<'a, Message: Clone + 'static> HeaderBar<'a, Message> {
             }};
         }
 
-        let density = self.density.unwrap_or_else(crate::config::header_size);
-        let spacing = if matches!(density, Density::Compact) {
-            2
-        } else {
-            8
-        };
-
         widget::row::with_capacity(3)
             .push_maybe(
                 self.on_minimize
@@ -410,7 +403,7 @@ impl<'a, Message: Clone + 'static> HeaderBar<'a, Message> {
                     .take()
                     .map(|m| icon!("window-close-symbolic", 16, m)),
             )
-            .spacing(spacing)
+            .spacing(8)
             .apply(widget::container)
             .height(Length::Fill)
             .center_y()

src/widget/nav_bar_toggle.rs

@@ -29,12 +29,12 @@ impl<'a, Message: 'static + Clone> From<NavBarToggle<Message>> for Element<'a, M
     fn from(nav_bar_toggle: NavBarToggle<Message>) -> Self {
         let icon = if nav_bar_toggle.active {
             widget::icon::from_svg_bytes(
-                &include_bytes!("../../res/icons/close-menu-symbolic.svg")[..],
+                &include_bytes!("../../res/icons/navbar-open-symbolic.svg")[..],
             )
             .symbolic(true)
         } else {
             widget::icon::from_svg_bytes(
-                &include_bytes!("../../res/icons/open-menu-symbolic.svg")[..],
+                &include_bytes!("../../res/icons/navbar-closed-symbolic.svg")[..],
             )
             .symbolic(true)
         };

src/widget/text_input/input.rs

@@ -101,7 +101,7 @@ where
     let spacing = THEME.lock().unwrap().cosmic().space_xxs();
 
     TextInput::new(placeholder, value)
-        .padding([0, spacing, 0, spacing])
+        .padding([0, spacing])
         .style(crate::theme::TextInput::Search)
         .leading_icon(
             crate::widget::icon::from_name("system-search-symbolic")
@@ -125,7 +125,7 @@ where
 {
     let spacing = THEME.lock().unwrap().cosmic().space_xxs();
     let mut input = TextInput::new(placeholder, value)
-        .padding([0, spacing, 0, spacing])
+        .padding([0, spacing])
         .style(crate::theme::TextInput::Default)
         .leading_icon(
             crate::widget::icon::from_name("system-lock-screen-symbolic")
@@ -170,7 +170,7 @@ where
 
     TextInput::new(placeholder, value)
         .style(crate::theme::TextInput::Inline)
-        .padding([spacing, spacing, spacing, spacing])
+        .padding(spacing)
 }
 
 #[cfg(feature = "wayland")]
@@ -246,7 +246,7 @@ where
             select_on_focus: false,
             font: None,
             width: Length::Fill,
-            padding: [spacing, spacing, spacing, spacing].into(),
+            padding: spacing.into(),
             size: None,
             helper_size: 10.0,
             helper_line_height: text::LineHeight::Absolute(14.0.into()),