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Add safe area and document coordinate systems (#3890)

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Added `Window::safe_area`, which describes the area of the surface that
is unobstructed by notches, bezels etc. The drawing code in the examples
have been updated to draw a star inside the safe area, and the plain
background outside of it.

Also renamed `Window::inner_position` to `Window::surface_position`, and
changed it to from screen coordinates to window coordinates, to better
align how these coordinate systems work together.

Finally, added some SVG images and documentation to describe how all of
this works.

This is fully implemented on macOS and iOS, and partially on the web.

Co-authored-by: daxpedda <daxpedda@gmail.com>
This commit is contained in:
Mads Marquart
2024-11-21 17:37:03 +01:00
committed by GitHub
parent d0c6c34eaa
commit dbcdb6f1b4
30 changed files with 797 additions and 212 deletions
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11
src/platform_impl/linux/x11/util/geometry.rs
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@@ -67,15 +67,20 @@ pub struct FrameExtentsHeuristic {
}
impl FrameExtentsHeuristic {
pub fn inner_pos_to_outer(&self, x: i32, y: i32) -> (i32, i32) {
pub fn surface_position(&self) -> (i32, i32) {
use self::FrameExtentsHeuristicPath::*;
if self.heuristic_path != UnsupportedBordered {
(x - self.frame_extents.left as i32, y - self.frame_extents.top as i32)
(self.frame_extents.left as i32, self.frame_extents.top as i32)
} else {
(x, y)
(0, 0)
}
}
pub fn inner_pos_to_outer(&self, x: i32, y: i32) -> (i32, i32) {
let (left, top) = self.surface_position();
(x - left, y - top)
}
pub fn surface_size_to_outer(&self, width: u32, height: u32) -> (u32, u32) {
(
width.saturating_add(