Taskbar+LibGUI+WindowServer: Shrink taskbar by one pixel

Make the taskbar 27 pixels tall instead of 28. This makes the button
icons and applets vertically centered.

On a related note, this required touching *way* too many places..

Userland/Libraries/LibGUI/Desktop.h

@@ -27,7 +27,7 @@ public:
 
     Gfx::IntRect rect() const { return m_rect; }
 
-    int taskbar_height() const { return 28; }
+    int taskbar_height() const { return 27; }
 
     void did_receive_screen_rect(Badge<WindowServerConnection>, const Gfx::IntRect&);
 

Userland/Services/Taskbar/ClockWidget.cpp

@@ -23,7 +23,7 @@ ClockWidget::ClockWidget()
 
     m_time_width = font().width("22:22:22");
 
-    set_fixed_size(m_time_width + 20, 22);
+    set_fixed_size(m_time_width + 20, 21);
 
     m_timer = add<Core::Timer>(1000, [this] {
         static time_t last_update_time;
@@ -179,7 +179,7 @@ void ClockWidget::paint_event(GUI::PaintEvent& event)
     auto time_text = Core::DateTime::now().to_string("%T");
     GUI::Painter painter(*this);
     painter.add_clip_rect(frame_inner_rect());
-    painter.draw_text(event.rect(), time_text, Gfx::FontDatabase::default_font(), Gfx::TextAlignment::Center, palette().window_text());
+    painter.draw_text(frame_inner_rect().translated(0, 1), time_text, Gfx::FontDatabase::default_font(), Gfx::TextAlignment::Center, palette().window_text());
 }
 
 void ClockWidget::mousedown_event(GUI::MouseEvent& event)

Userland/Services/Taskbar/TaskbarWindow.cpp

@@ -67,7 +67,7 @@ TaskbarWindow::TaskbarWindow(NonnullRefPtr<GUI::Menu> start_menu)
     m_start_button = GUI::Button::construct("Serenity");
     m_start_button->set_font(Gfx::FontDatabase::default_bold_font());
     m_start_button->set_icon_spacing(0);
-    m_start_button->set_fixed_size(80, 22);
+    m_start_button->set_fixed_size(80, 21);
     auto app_icon = GUI::Icon::default_icon("ladyball");
     m_start_button->set_icon(app_icon.bitmap_for_size(16));
     m_start_button->set_menu(m_start_menu);
@@ -170,8 +170,8 @@ void TaskbarWindow::update_applet_area()
 NonnullRefPtr<GUI::Button> TaskbarWindow::create_button(const WindowIdentifier& identifier)
 {
     auto& button = m_task_button_container->add<TaskbarButton>(identifier);
-    button.set_min_size(20, 22);
-    button.set_max_size(140, 22);
+    button.set_min_size(20, 21);
+    button.set_max_size(140, 21);
     button.set_text_alignment(Gfx::TextAlignment::CenterLeft);
     button.set_icon(*m_default_icon);
     return button;
@@ -315,7 +315,7 @@ void TaskbarWindow::wm_event(GUI::WMEvent& event)
     case GUI::Event::WM_AppletAreaSizeChanged: {
         auto& changed_event = static_cast<GUI::WMAppletAreaSizeChangedEvent&>(event);
         m_applet_area_size = changed_event.size();
-        m_applet_area_container->set_fixed_size(changed_event.size().width() + 8, 22);
+        m_applet_area_container->set_fixed_size(changed_event.size().width() + 8, 21);
         update_applet_area();
         break;
     }

Userland/Services/Taskbar/TaskbarWindow.h

@@ -16,7 +16,7 @@ class TaskbarWindow final : public GUI::Window {
 public:
     virtual ~TaskbarWindow() override;
 
-    static int taskbar_height() { return 28; }
+    static int taskbar_height() { return 27; }
 
 private:
     explicit TaskbarWindow(NonnullRefPtr<GUI::Menu> start_menu);

Userland/Services/WindowServer/AppletManager.cpp

@@ -101,7 +101,7 @@ void AppletManager::add_applet(Window& applet)
 void AppletManager::relayout()
 {
     constexpr int applet_spacing = 4;
-    constexpr int applet_window_height = 20;
+    constexpr int applet_window_height = 19;
     int total_width = 0;
     for (auto& existing_applet : m_applets) {
         total_width += max(0, existing_applet->size().width()) + applet_spacing;