AdwHeaderBar layout rules: button placement, flat/icon-only buttons, tooltips, title widgets, split buttons. Use when designing or fixing a GNOME app's header bar.
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Adw.HeaderBar {
centering-policy: strict;
show-start-title-buttons: false;
show-end-title-buttons: false;
title-widget: Adw.WindowTitle {
title: _("My App");
};
}
| Slot | Position | Content |
|---|---|---|
[start] | Left | Primary actions (New, Open, Back) |
title-widget | Center | WindowTitle or ViewSwitcher |
[end] | Right | Menu button, secondary actions |
.flat style (no visible background)tooltip-texticon-name="document-new-symbolic"GtkBox with spacingicon-name="open-menu-symbolic" on a GtkMenuButtonAdw.HeaderBar {
centering-policy: strict;
title-widget: Adw.WindowTitle { title: _("My App"); };
[start]
Button {
icon-name: "document-open-symbolic";
tooltip-text: _("Open");
styles ["flat"];
clicked => $on_open_cb(template);
}
[start]
Button {
icon-name: "tab-new-symbolic";
tooltip-text: _("New Tab");
styles ["flat"];
action-name: "session.new-draft";
}
[end]
MenuButton {
icon-name: "open-menu-symbolic";
tooltip-text: _("Main Menu");
menu-model: primary_menu;
}
}
| Policy | Behavior |
|---|---|
strict | Title strictly centered (Weather) |
loose | Title shifts to avoid overlap |
<object class="AdwHeaderBar">
<property name="title-widget">
<object class="GtkBox">
<property name="orientation">vertical</property>
<property name="valign">center</property>
<child>
<object class="GtkCenterBox">
<child type="start">
<object class="GtkLabel" id="modified_indicator">
<property name="label">•</property>
</object>
</child>
<child type="center">
<object class="GtkLabel" id="title">
<property name="ellipsize">middle</property>
<style><class name="title"/></style>
</object>
</child>
</object>
</child>
<child>
<object class="GtkCenterBox">
<child type="center">
<object class="GtkLabel" id="subtitle">
<property name="ellipsize">middle</property>
<style><class name="subtitle"/></style>
</object>
</child>
</object>
</child>
</object>
</property>
</object>
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Add a standard AdwAboutDialog wired to app metadata, plus the AppStream metainfo file it should share data with. Use when adding an About entry, release notes, credits, or preparing app metadata.
中文简介正在准备中。当前显示原文说明。
Make a GTK4/libadwaita app accessible — accessible labels and roles, tooltips on icon-only buttons, keyboard navigation, contrast, and testing with Orca/Accerciser. Use when fixing a11y issues or running the accessibility category of a HIG audit.
中文简介正在准备中。当前显示原文说明。
Responsive GNOME layouts: AdwBreakpoint conditions, BreakpointBin, MultiLayoutView, BottomSheet, narrow/wide layout swaps. Use when making an app work on phones or narrow windows.
中文简介正在准备中。当前显示原文说明。
Onboarding tour with AdwCarousel and navigation dots, skippable welcome screens. Use when adding a first-run tour or feature showcase to a GNOME app.
中文简介正在准备中。当前显示原文说明。
Implement GNOME's 4-tier destructive-action pattern: undo toasts instead of confirmation dialogs, AdwAlertDialog for irreversible actions. Use when adding delete, remove, clear, or other destructive actions.
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Loading, empty, and error states with AdwStatusPage and AdwSpinner — placeholder icons, titles, action buttons. Use when an app view can be empty, loading, or failed.
中文简介正在准备中。当前显示原文说明。