UIHorizontalLayout

Class

Source: UIHorizontalLayout.h

Inherits from: UILayout

Description

Horizontal layout container with scroll support.

Organizes UI elements horizontally, one next to another. Supports scrolling when content exceeds the visible viewport. Handles keyboard/D-pad navigation automatically.

Inheritance

UILayout → UIHorizontalLayout

Methods

void setScrollEnabled(bool enable)

Description:

Enables or disables scrolling.

Parameters:

• enable: True to enable scrolling.

void enableScroll(bool enable)

Description:

Enables or disables scrolling (alias for setScrollEnabled).

Parameters:

• enable: True to enable scrolling.

int getSelectedIndex() const

Description:

Gets the currently selected element index.

Returns: Selected index, or -1 if none selected.

void setSelectedIndex(int index)

Description:

Sets the selected element index.

Parameters:

• index: Index to select (-1 to deselect).

UIElement* getSelectedElement() const

Description:

Gets the selected element.

Returns: Pointer to selected element, or nullptr if none selected.

void setNavigationButtons(uint8_t leftButton, uint8_t rightButton)

Description:

Sets the navigation button indices.

Parameters:

• leftButton: Button index for LEFT navigation.
• rightButton: Button index for RIGHT navigation.

void calculateContentWidth()

Description:

Calculates the total content width.

void updateElementVisibility()

Description:

Updates element visibility based on scroll position.

void ensureSelectedVisible()

Description:

Ensures the selected element is visible by adjusting scroll.

void clampScrollOffset()

Description:

Clamps scroll offset to valid range.