Struct wlroots::utils::region::PixmanRegion32

pub struct PixmanRegion32 {
    pub region: pixman_region32_t,
}

A thin wrapper around a 32 bit Pixman region.

Fields

region: pixman_region32_t

Methods

impl PixmanRegion32

pub fn new() -> Self

Construct a new Pixman region.

pub fn scale(&self, dest: &mut PixmanRegion32, scale: c_float)

Scales a region, ie. multiplies all its coordinates by scale and write out the result to dest.

The resulting coordinates are rounded up or down so that the new region is at least as big as the original one.

pub fn transform(     &self,     dest: &mut PixmanRegion32,     transform: wl_output_transform,     width: c_int,     height: c_int )

Applies a transform to a region inside a box of size width x height. Writes the result to dest.

pub fn expand(&self, dest: &mut PixmanRegion32, distance: c_int)

Expands the region of distance. If distance is negative, it shrinks the region. Writes the result to the dest.

pub fn rotated_bounds(     &self,     dest: &mut PixmanRegion32,     rotation: c_float,     ox: c_int,     oy: c_int )

Builds the smallest possible region that contains the region rotated about the point in output space (ox, oy). Writes the result to the dest.

pub fn confine(     &mut self,     x1: c_double,     y1: c_double,     x2: c_double,     y2: c_double ) -> Result<(c_double, c_double), ()>

Confines a region to the box formed by the points.

If it could not be confined by the points it will return an error.