Struct AndroidPlatform 

pub struct AndroidPlatform { /* private fields */ }

Platform abstraction for Android.

This type manages platform-specific conversions (e.g., density, pointer coordinates) and provides a bridge between Android’s event system and Compose’s logical coordinate space.

Implementations

impl AndroidPlatform

pub fn new() -> Self

Creates a new Android platform with default configuration.

pub fn set_scale_factor(&mut self, scale_factor: f64)

Updates the platform’s scale factor.

This should be called when the device density changes.

pub fn set_input_surface_offset_px(&mut self, x_px: f64, y_px: f64)

Updates the native-surface offset for Android input coordinates.

Android MotionEvent positions are relative to the activity content area, while the renderer draws into the full ANativeWindow. Freeform and desktop window modes can inflate that native surface around the content area for shadows/decor, so input must be shifted into native surface coordinates before density conversion.

pub fn input_surface_offset_px(&self) -> (f64, f64)

Returns the configured native-surface input offset in physical pixels.

pub fn pointer_position(&self, physical_x: f64, physical_y: f64) -> Point

Converts a physical Android pointer position into logical coordinates.

Android provides pointer positions in content-relative physical pixels; this method first shifts them into the native surface coordinate space, then scales them back to logical pixels using the platform’s current scale factor.

pub fn scale_factor(&self) -> f32

Returns the current scale factor (density).

Trait Implementations

impl Clone for AndroidPlatform

fn clone(&self) -> AndroidPlatform

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AndroidPlatform

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for AndroidPlatform

fn default() -> Self

Returns the “default value” for a type.