Navigation
Breadcrumb
Shows the trail to the current location and lets people go back up the hierarchy.
Example
Usage
BreadcrumbSize
Standard uses the compact 20 px row; Large uses the 40 px row and larger item padding.
#include <FluentQt/Navigation.h>
using namespace fluent::navigation;
const QStringList path{"Home", "Documents", "Images"};
auto* standard = new Breadcrumb(this);
standard->setItems(path);
standard->setBreadcrumbSize(Breadcrumb::BreadcrumbSize::Standard);
standard->setFixedHeight(20);
auto* large = new Breadcrumb(this);
large->setItems(path);
large->setBreadcrumbSize(Breadcrumb::BreadcrumbSize::Large);
large->setFixedHeight(40);import fluentqt
path = ["Home", "Documents", "Images"]
standard = fluentqt.Breadcrumb()
standard.setItems(path)
standard.setBreadcrumbSize(fluentqt.Breadcrumb.BreadcrumbSize.Standard)
standard.setFixedHeight(20)
large = fluentqt.Breadcrumb()
large.setItems(path)
large.setBreadcrumbSize(fluentqt.Breadcrumb.BreadcrumbSize.Large)
large.setFixedHeight(40)API
DeclarationNo matching API members.
fluent::navigation::Breadcrumb
Inherits QWidget · FluentElement · QMLPlus
Breadcrumb navigation control with overflow handling and item sizing.
Constructors
Properties
int itemCountNumber of items exposed by the navigation control.
ReaditemCount()NotifyitemsChanged()BreadcrumbSize breadcrumbSizeVisual density used by breadcrumb items.
ReadbreadcrumbSize()WritesetBreadcrumbSize()NotifybreadcrumbSizeChanged()OverflowMode overflowModeOverflow behavior used by breadcrumb items.
ReadoverflowMode()WritesetOverflowMode()NotifyoverflowModeChanged()bool autoTruncateOnItemClickWhether breadcrumb items collapse after item activation.
ReadautoTruncateOnItemClick()WritesetAutoTruncateOnItemClick()NotifyautoTruncateOnItemClickChanged()Typography::FontRole standardFontRoleTypography role used by standard breadcrumb items.
ReadstandardFontRole()WritesetStandardFontRole()NotifystandardFontRoleChanged()Typography::FontRole largeFontRoleTypography role used by large breadcrumb items.
ReadlargeFontRole()WritesetLargeFontRole()NotifylargeFontRoleChanged()
Methods
int itemCount() constNumber of items exposed by the navigation control.
BreadcrumbSize breadcrumbSize() constVisual density used by breadcrumb items.
void setBreadcrumbSize(BreadcrumbSize size)Visual density used by breadcrumb items.
OverflowMode overflowMode() constOverflow behavior used by breadcrumb items.
void setOverflowMode(OverflowMode mode)Overflow behavior used by breadcrumb items.
bool autoTruncateOnItemClick() constWhether breadcrumb items collapse after item activation.
void setAutoTruncateOnItemClick(bool enabled)Whether breadcrumb items collapse after item activation.
Typography::FontRole standardFontRole() constTypography role used by standard breadcrumb items.
void setStandardFontRole(Typography::FontRole role)Typography role used by standard breadcrumb items.
Typography::FontRole largeFontRole() constTypography role used by large breadcrumb items.
void setLargeFontRole(Typography::FontRole role)Typography role used by large breadcrumb items.
Signals
void itemsChanged()Number of items exposed by the navigation control.
void breadcrumbSizeChanged(BreadcrumbSize size)Visual density used by breadcrumb items.
void overflowModeChanged(OverflowMode mode)Overflow behavior used by breadcrumb items.
void autoTruncateOnItemClickChanged(bool enabled)Whether breadcrumb items collapse after item activation.
void standardFontRoleChanged(Typography::FontRole role)Typography role used by standard breadcrumb items.
void largeFontRoleChanged(Typography::FontRole role)Typography role used by large breadcrumb items.
Enumerations
enum class BreadcrumbSizeStandardLarge
enum class OverflowModeNoneBeginningMiddle
Subclass interfaces
Methods
Inherited from fluent::FluentElement
Methods
static void setTheme(Theme theme)Updates the global theme and notifies active FluentElement instances.
static void setThemeDeferred(Theme theme)Schedules a visible-first batched theme refresh without blocking the current interaction.
static Theme currentTheme()Returns the currently active global theme.
static bool themeUsesDarkAppearance(Theme theme)Returns whether a theme uses dark-backed chrome and material tokens.
static void refreshTheme()Re-broadcasts the current theme to repaint after a design-token change.
static int themeGeneration()Monotonic counter bumped on every theme change, for staleness checks.
Theme effectiveTheme() constResolves the theme used by this element, honoring an inherited QWidget override.
bool effectiveThemeUsesDarkAppearance() constReturns whether this element's effective theme uses dark-backed chrome.
bool setThemeOverrides(const QJsonObject& overrides)Component-facing token accessors.
QJsonObject themeOverrides() constReturns this element's authored overrides.
void clearThemeOverrides()Restores all token fields to global theme defaults.
const Colors& themeColorsRef() constNon-copying access to the active color set (for hot paint paths).
Material::AcrylicToken themeAcrylic() constMaterial, elevation, and adaptive layout tokens.
QColor themeBackdrop(bool active) constWindow-chrome backdrop color for the given activation state.
virtual void onThemeUpdated()Called after the global theme changes.
Enumerations
enum ThemeGlobal visual theme used when resolving design tokens.
Light = 0Dark = 1HighContrast = 2
Types and aliases
struct ColorsDesign token snapshots returned to components.
Inherited from fluent::QMLPlus
Methods
AnchorLayout::Anchors* anchors()Returns mutable anchors for the QWidget host.
void setState(const QString& name)Applies a named state, or clears state when name is empty.
void addState(const QMLState& state)Registers or replaces a named state definition.
void evaluateStates()Reevaluates conditions; the first registered true condition wins.
QMLPlusRuntime* runtime()Returns the lazy host-owned state observation object.
void setAnchors(const AnchorLayout::Anchors& anchors)Replaces all host anchors and invalidates the parent layout.
void resetAnchors()Clears all host anchors and invalidates the parent layout.
void bind(const char* targetProp, QObject* source, const char* sourceProp, PropertyBinder::Direction dir = PropertyBinder::OneWay)Binds a source property to a property on the QWidget host.
BindingHandle bindManaged(const char* targetProp, QObject* source, const char* sourceProp, PropertyBinder::Direction direction = PropertyBinder::OneWay, BindingOptions options = {})Installs a managed direct binding on this QWidget host.
BindingHandle bindComputed(const char* targetProp, const QVector<BindingDependency>& dependencies, std::function<QVariant()> evaluate, BindingOptions options = {})Installs an explicit-dependency C++ expression on this QWidget host.
void addTransition(const StateTransition& transition)Registers a state transition in precedence order.
void setBehavior(const char* propertyName, const PropertyAnimation& animation)Sets the default animation for this host's managed property writes.
void clearBehavior(const char* propertyName)Removes the default animation for future managed writes.
bool writeProperty(const char* propertyName, const QVariant& value)Writes a host property through Behavior without removing its binding.
All inherited Qt members：QWidget