diff options
Diffstat (limited to 'helix-view')
| -rw-r--r-- | helix-view/src/graphics.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/helix-view/src/graphics.rs b/helix-view/src/graphics.rs index 5138e923..ed530533 100644 --- a/helix-view/src/graphics.rs +++ b/helix-view/src/graphics.rs @@ -64,22 +64,27 @@ impl Rect { }
}
+ #[inline]
pub fn area(self) -> u16 {
self.width * self.height
}
+ #[inline]
pub fn left(self) -> u16 {
self.x
}
+ #[inline]
pub fn right(self) -> u16 {
self.x.saturating_add(self.width)
}
+ #[inline]
pub fn top(self) -> u16 {
self.y
}
+ #[inline]
pub fn bottom(self) -> u16 {
self.y.saturating_add(self.height)
}
@@ -97,7 +102,18 @@ impl Rect { }
}
+ /// Calculate the union between two [`Rect`]s.
pub fn union(self, other: Rect) -> Rect {
+ // Example:
+ //
+ // If `Rect` A is positioned at `(0, 0)` with a width and height of `5`,
+ // and `Rect` B is positioned at `(5, 0)` with a width and height of `2`,
+ // then this is the resulting union:
+ //
+ // x1 = min(0, 5) => x1 = 0
+ // y1 = min(0, 0) => y1 = 0
+ // x2 = max(0 + 5, 5 + 2) => x2 = 7
+ // y2 = max(0 + 5, 0 + 2) => y2 = 5
let x1 = min(self.x, other.x);
let y1 = min(self.y, other.y);
let x2 = max(self.x + self.width, other.x + other.width);
@@ -110,7 +126,18 @@ impl Rect { }
}
+ /// Calculate the intersection between two [`Rect`]s.
pub fn intersection(self, other: Rect) -> Rect {
+ // Example:
+ //
+ // If `Rect` A is positioned at `(0, 0)` with a width and height of `5`,
+ // and `Rect` B is positioned at `(5, 0)` with a width and height of `2`,
+ // then this is the resulting intersection:
+ //
+ // x1 = max(0, 5) => x1 = 5
+ // y1 = max(0, 0) => y1 = 0
+ // x2 = min(0 + 5, 5 + 2) => x2 = 5
+ // y2 = min(0 + 5, 0 + 2) => y2 = 2
let x1 = max(self.x, other.x);
let y1 = max(self.y, other.y);
let x2 = min(self.x + self.width, other.x + other.width);
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