Fluent-Qt

Windowing

Window

A Fluent top-level window with custom chrome and theming.

Example

Window: Top-level content host

Usage

Top-level content host

Open a Fluent Window with Mica material and assign caller-owned content to its content host.

#include <FluentQt/Windowing.h>
using namespace fluent::windowing;

auto* window = new Window();
window->setAttribute(Qt::WA_DeleteOnClose);
window->setWindowTitle("Fluent window");
window->setCustomWindowChromeEnabled(true);
window->setBackdropEffect(BackdropEffect::Mica);

auto* content = new QWidget();
content->setAutoFillBackground(false);
window->setContentWidget(content);
window->resize(640, 520);
window->show();

fluent::windowing::Window

Inherits QWidget · FluentElement · QMLPlus

Application shell window with title-bar and content hosting.

Constructors

Properties

QWidget* contentWidget

Caller-owned widget hosted as component content.

Read contentWidget()Write setContentWidget()
BackdropEffect backdropEffect
Read backdropEffect()Write setBackdropEffect()Notify backdropEffectChanged()

Methods

QRect chromeFrameRect() const

Visible chrome/content frame in this window's local coordinates.

QWidget* contentWidget() const

Caller-owned widget hosted as component content.

void setContentWidget(QWidget* widget)

Caller-owned widget hosted as component content.

void setCustomWindowChromeEnabled(bool enabled)

Enables Fluent-managed title-bar/non-client integration.

void reapplySystemBackdrop()

Re-probes and re-applies the configured backdrop.

void setVisible(bool visible) override

Shows or hides the window; a window shown maximized stays maximized.

void prepareForNativeRestore()

Reasserts native chrome while a hidden window is prepared for restore.

void requestForegroundActivation()

Requests foreground activation through Qt and the platform adapter.

void setBackdropEffect(BackdropEffect effect)

Sets the window background effect and re-applies it live.

BackdropState backdropState() const

Effective backdrop state after platform capability resolution.

BackdropCapabilities backdropCapabilities() const

Backdrop capabilities currently advertised by the platform session.

void setChromeInteractive(bool interactive)

Enables/disables user move + resize through the window chrome.

Signals

Destructors

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() const

Resolves the theme used by this element, honoring an inherited QWidget override.

bool effectiveThemeUsesDarkAppearance() const

Returns whether this element's effective theme uses dark-backed chrome.

QJsonObject themeOverrides() const

Returns this element's authored overrides.

void clearThemeOverrides()

Restores all token fields to global theme defaults.

const Colors& themeColorsRef() const

Non-copying access to the active color set (for hot paint paths).

Material::AcrylicToken themeAcrylic() const

Material, elevation, and adaptive layout tokens.

QColor themeBackdrop(bool active) const

Window-chrome backdrop color for the given activation state.

virtual void onThemeUpdated()

Called after the global theme changes.

Enumerations

enum Theme

Global visual theme used when resolving design tokens.

  • Light = 0
  • Dark = 1
  • HighContrast = 2

Types and aliases

struct Colors

Design 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 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