UI/Qt: Shrink navigation toolbar buttons

Reduce toolbar button height alongside the recently tightened browser
chrome. Keep all standard toolbar controls aligned by applying the same
size to navigation, sidebar, downloads, and menu buttons. Adjust the
styled bounds and menu glyph position to preserve visual centering.

Author: awesomekling

UI/Qt/ChromeStyle.cpp

@@ -348,10 +348,10 @@ QWidget#LadybirdNavigationToolbar QToolButton {{
     color: {5};
     background: transparent;
     border: 1px solid transparent;
-    border-radius: 17px;
-    min-width: 34px;
-    min-height: 34px;
-    margin: 1px 0;
+    border-radius: 16px;
+    min-width: 32px;
+    min-height: 32px;
+    margin: 0 0 2px 0;
     padding: 0;
 }}
 
@@ -376,6 +376,10 @@ QWidget#LadybirdNavigationToolbar QToolButton::menu-indicator {{
     image: none;
 }}
 
+QWidget#LadybirdNavigationToolbar QToolButton#LadybirdHamburgerButton {{
+    margin: 1px 0;
+}}
+
 QPushButton#LadybirdPrivateBadge {{
     color: {5};
     background: {10};

UI/Qt/Icon.cpp

@@ -263,9 +263,9 @@ static QPixmap create_chrome_icon_pixmap(ChromeIcon icon, QColor color, qreal de
         break;
     case ChromeIcon::Menu:
         painter.setPen(chrome_icon_pen(color, 1.55));
-        painter.drawLine(QPointF(4.1, 6.2), QPointF(15.9, 6.2));
-        painter.drawLine(QPointF(4.1, 10.0), QPointF(15.9, 10.0));
-        painter.drawLine(QPointF(4.1, 13.8), QPointF(15.9, 13.8));
+        painter.drawLine(QPointF(4.1, 5.7), QPointF(15.9, 5.7));
+        painter.drawLine(QPointF(4.1, 9.5), QPointF(15.9, 9.5));
+        painter.drawLine(QPointF(4.1, 13.3), QPointF(15.9, 13.3));
         break;
     case ChromeIcon::Star:
         draw_star_icon(painter, color, false);

UI/Qt/Tab.cpp

@@ -156,14 +156,16 @@ class DownloadsButton final : public QToolButton {
     QIcon m_progress_icon;
 };
 
+static constexpr int TOOLBAR_BUTTON_SIZE = 34;
+
 static QToolButton* create_toolbar_button(QWidget& parent, QAction& action)
 {
     auto* button = new QToolButton(&parent);
     button->setDefaultAction(&action);
     button->setAutoRaise(true);
     button->setFocusPolicy(Qt::NoFocus);
     button->setIconSize({ 20, 20 });
-    button->setFixedSize(36, 36);
+    button->setFixedSize(TOOLBAR_BUTTON_SIZE, TOOLBAR_BUTTON_SIZE);
 
     // FIXME: In Menu.cpp, we set the initial visibility of the action before we've associated it with this QToolButton.
     //        It would be nicer if we didn't have to do this here.
@@ -599,7 +601,7 @@ Tab::Tab(BrowserWindow* window, RefPtr<WebView::WebContentClient> parent_client,
     m_downloads_button->setAutoRaise(true);
     m_downloads_button->setFocusPolicy(Qt::NoFocus);
     m_downloads_button->setIconSize({ 20, 20 });
-    m_downloads_button->setFixedSize(36, 36);
+    m_downloads_button->setFixedSize(TOOLBAR_BUTTON_SIZE, TOOLBAR_BUTTON_SIZE);
     m_downloads_button->setVisible(m_open_downloads_page_action->isVisible());
     QObject::connect(m_downloads_button, &QToolButton::clicked, this, [this] {
         show_downloads_popover();
@@ -617,11 +619,12 @@ Tab::Tab(BrowserWindow* window, RefPtr<WebView::WebContentClient> parent_client,
     });
 
     m_hamburger_button = new HamburgerButton(m_toolbar);
+    m_hamburger_button->setObjectName("LadybirdHamburgerButton");
     m_hamburger_button->setText("Show &Menu");
     m_hamburger_button->setToolTip("Show Menu");
     m_hamburger_button->setIcon(create_chrome_icon(ChromeIcon::Menu, palette()));
     m_hamburger_button->setIconSize({ 20, 20 });
-    m_hamburger_button->setFixedSize(36, 36);
+    m_hamburger_button->setFixedSize(TOOLBAR_BUTTON_SIZE, TOOLBAR_BUTTON_SIZE);
     m_hamburger_button->setAutoRaise(true);
     m_hamburger_button->setFocusPolicy(Qt::NoFocus);
     m_hamburger_button->setPopupMode(QToolButton::InstantPopup);