UIVerticalLayout

Class

Source: UIVerticalLayout.h

Inherits from: UILayout

Description

Vertical layout container with scroll support.

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

Inheritance

UILayout → UIVerticalLayout

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 upButton, uint8_t downButton)

Description:

Sets the navigation button indices.

Parameters:

• upButton: Button index for UP navigation.
• downButton: Button index for DOWN navigation.

void calculateContentHeight()

Description:

Calculates the total content height.

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.