1use core::fmt::Debug;
2use derive_more::{Add, AddAssign, Div, Mul, Sub, SubAssign};
3use refineable::Refineable;
4use std::ops::{Add, AddAssign, Div, Mul, MulAssign, Sub, SubAssign};
5
6#[derive(Refineable, Default, Add, AddAssign, Sub, SubAssign, Copy, Debug, PartialEq, Eq, Hash)]
7#[refineable(debug)]
8#[repr(C)]
9pub struct Point<T: Clone + Debug> {
10 pub x: T,
11 pub y: T,
12}
13
14pub fn point<T: Clone + Debug>(x: T, y: T) -> Point<T> {
15 Point { x, y }
16}
17
18impl<T: Clone + Debug> Point<T> {
19 pub fn new(x: T, y: T) -> Self {
20 Self { x, y }
21 }
22
23 pub fn map<U: Clone + Debug, F: Fn(T) -> U>(&self, f: F) -> Point<U> {
24 Point {
25 x: f(self.x.clone()),
26 y: f(self.y.clone()),
27 }
28 }
29}
30
31impl Point<Pixels> {
32 pub fn scale(&self, factor: f32) -> Point<ScaledPixels> {
33 Point {
34 x: self.x.scale(factor),
35 y: self.y.scale(factor),
36 }
37 }
38}
39
40impl<T, Rhs> Mul<Rhs> for Point<T>
41where
42 T: Mul<Rhs, Output = T> + Clone + Debug,
43 Rhs: Clone + Debug,
44{
45 type Output = Point<T>;
46
47 fn mul(self, rhs: Rhs) -> Self::Output {
48 Point {
49 x: self.x * rhs.clone(),
50 y: self.y * rhs,
51 }
52 }
53}
54
55impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Point<T> {
56 fn mul_assign(&mut self, rhs: S) {
57 self.x = self.x.clone() * rhs.clone();
58 self.y = self.y.clone() * rhs;
59 }
60}
61
62impl<T: Clone + Debug + Sub<Output = T>> SubAssign<Size<T>> for Point<T> {
63 fn sub_assign(&mut self, rhs: Size<T>) {
64 self.x = self.x.clone() - rhs.width;
65 self.y = self.y.clone() - rhs.height;
66 }
67}
68
69impl<T: Clone + Debug + Add<Output = T> + Copy> AddAssign<T> for Point<T> {
70 fn add_assign(&mut self, rhs: T) {
71 self.x = self.x.clone() + rhs;
72 self.y = self.y.clone() + rhs;
73 }
74}
75
76impl<T: Clone + Debug + Div<S, Output = T>, S: Clone> Div<S> for Point<T> {
77 type Output = Self;
78
79 fn div(self, rhs: S) -> Self::Output {
80 Self {
81 x: self.x / rhs.clone(),
82 y: self.y / rhs,
83 }
84 }
85}
86
87impl<T: Clone + Debug + std::cmp::PartialOrd> Point<T> {
88 pub fn max(&self, other: &Self) -> Self {
89 Point {
90 x: if self.x >= other.x {
91 self.x.clone()
92 } else {
93 other.x.clone()
94 },
95 y: if self.y >= other.y {
96 self.y.clone()
97 } else {
98 other.y.clone()
99 },
100 }
101 }
102}
103
104impl<T: Clone + Debug> Clone for Point<T> {
105 fn clone(&self) -> Self {
106 Self {
107 x: self.x.clone(),
108 y: self.y.clone(),
109 }
110 }
111}
112
113#[derive(Refineable, Default, Clone, Copy, Debug, PartialEq, Div, Hash)]
114#[refineable(debug)]
115#[repr(C)]
116pub struct Size<T: Clone + Debug> {
117 pub width: T,
118 pub height: T,
119}
120
121pub fn size<T: Clone + Debug>(width: T, height: T) -> Size<T> {
122 Size { width, height }
123}
124
125impl<T: Clone + Debug> Size<T> {
126 pub fn map<U: Clone + Debug, F: Fn(T) -> U>(&self, f: F) -> Size<U> {
127 Size {
128 width: f(self.width.clone()),
129 height: f(self.height.clone()),
130 }
131 }
132}
133
134impl Size<Pixels> {
135 pub fn scale(&self, factor: f32) -> Size<ScaledPixels> {
136 Size {
137 width: self.width.scale(factor),
138 height: self.height.scale(factor),
139 }
140 }
141}
142
143impl<T: Clone + Debug + Ord> Size<T> {
144 pub fn max(&self, other: &Self) -> Self {
145 Size {
146 width: if self.width >= other.width {
147 self.width.clone()
148 } else {
149 other.width.clone()
150 },
151 height: if self.height >= other.height {
152 self.height.clone()
153 } else {
154 other.height.clone()
155 },
156 }
157 }
158}
159
160impl<T, Rhs> Mul<Rhs> for Size<T>
161where
162 T: Mul<Rhs, Output = Rhs> + Debug + Clone,
163 Rhs: Debug + Clone,
164{
165 type Output = Size<Rhs>;
166
167 fn mul(self, rhs: Rhs) -> Self::Output {
168 Size {
169 width: self.width * rhs.clone(),
170 height: self.height * rhs,
171 }
172 }
173}
174
175impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Size<T> {
176 fn mul_assign(&mut self, rhs: S) {
177 self.width = self.width.clone() * rhs.clone();
178 self.height = self.height.clone() * rhs;
179 }
180}
181
182impl<T: Eq + Debug + Clone> Eq for Size<T> {}
183
184impl From<Size<Option<Pixels>>> for Size<Option<f32>> {
185 fn from(val: Size<Option<Pixels>>) -> Self {
186 Size {
187 width: val.width.map(|p| p.0 as f32),
188 height: val.height.map(|p| p.0 as f32),
189 }
190 }
191}
192
193impl Size<Length> {
194 pub fn full() -> Self {
195 Self {
196 width: relative(1.).into(),
197 height: relative(1.).into(),
198 }
199 }
200}
201
202impl Size<DefiniteLength> {
203 pub fn zero() -> Self {
204 Self {
205 width: px(0.).into(),
206 height: px(0.).into(),
207 }
208 }
209}
210
211impl Size<Length> {
212 pub fn auto() -> Self {
213 Self {
214 width: Length::Auto,
215 height: Length::Auto,
216 }
217 }
218}
219
220#[derive(Refineable, Clone, Default, Debug, Eq, PartialEq)]
221#[refineable(debug)]
222#[repr(C)]
223pub struct Bounds<T: Clone + Debug> {
224 pub origin: Point<T>,
225 pub size: Size<T>,
226}
227
228impl<T, Rhs> Mul<Rhs> for Bounds<T>
229where
230 T: Mul<Rhs, Output = Rhs> + Clone + Debug,
231 Point<T>: Mul<Rhs, Output = Point<Rhs>>,
232 Rhs: Clone + Debug,
233{
234 type Output = Bounds<Rhs>;
235
236 fn mul(self, rhs: Rhs) -> Self::Output {
237 Bounds {
238 origin: self.origin * rhs.clone(),
239 size: self.size * rhs,
240 }
241 }
242}
243
244impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Bounds<T> {
245 fn mul_assign(&mut self, rhs: S) {
246 self.origin *= rhs.clone();
247 self.size *= rhs;
248 }
249}
250
251impl<T: Clone + Debug + Div<S, Output = T>, S: Clone> Div<S> for Bounds<T>
252where
253 Size<T>: Div<S, Output = Size<T>>,
254{
255 type Output = Self;
256
257 fn div(self, rhs: S) -> Self {
258 Self {
259 origin: self.origin / rhs.clone(),
260 size: self.size / rhs,
261 }
262 }
263}
264
265impl<T: Clone + Debug + Add<T, Output = T>> Bounds<T> {
266 pub fn upper_right(&self) -> Point<T> {
267 Point {
268 x: self.origin.x.clone() + self.size.width.clone(),
269 y: self.origin.y.clone(),
270 }
271 }
272
273 pub fn lower_right(&self) -> Point<T> {
274 Point {
275 x: self.origin.x.clone() + self.size.width.clone(),
276 y: self.origin.y.clone() + self.size.height.clone(),
277 }
278 }
279}
280
281impl<T: Clone + Debug + PartialOrd + Add<T, Output = T>> Bounds<T> {
282 pub fn contains_point(&self, point: Point<T>) -> bool {
283 point.x >= self.origin.x
284 && point.x <= self.origin.x.clone() + self.size.width.clone()
285 && point.y >= self.origin.y
286 && point.y <= self.origin.y.clone() + self.size.height.clone()
287 }
288
289 pub fn map<U: Clone + Debug, F: Fn(T) -> U>(&self, f: F) -> Bounds<U> {
290 Bounds {
291 origin: self.origin.map(&f),
292 size: self.size.map(f),
293 }
294 }
295}
296
297impl Bounds<Pixels> {
298 pub fn scale(&self, factor: f32) -> Bounds<ScaledPixels> {
299 Bounds {
300 origin: self.origin.scale(factor),
301 size: self.size.scale(factor),
302 }
303 }
304}
305
306impl<T: Clone + Debug + Copy> Copy for Bounds<T> {}
307
308#[derive(Refineable, Clone, Default, Debug, Eq, PartialEq)]
309#[refineable(debug)]
310#[repr(C)]
311pub struct Edges<T: Clone + Debug> {
312 pub top: T,
313 pub right: T,
314 pub bottom: T,
315 pub left: T,
316}
317
318impl<T: Clone + Debug + Mul<Output = T>> Mul for Edges<T> {
319 type Output = Self;
320
321 fn mul(self, rhs: Self) -> Self::Output {
322 Self {
323 top: self.top.clone() * rhs.top,
324 right: self.right.clone() * rhs.right,
325 bottom: self.bottom.clone() * rhs.bottom,
326 left: self.left.clone() * rhs.left,
327 }
328 }
329}
330
331impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Edges<T> {
332 fn mul_assign(&mut self, rhs: S) {
333 self.top = self.top.clone() * rhs.clone();
334 self.right = self.right.clone() * rhs.clone();
335 self.bottom = self.bottom.clone() * rhs.clone();
336 self.left = self.left.clone() * rhs.clone();
337 }
338}
339
340impl<T: Clone + Debug + Copy> Copy for Edges<T> {}
341
342impl<T: Clone + Debug> Edges<T> {
343 pub fn map<U: Clone + Debug, F: Fn(&T) -> U>(&self, f: F) -> Edges<U> {
344 Edges {
345 top: f(&self.top),
346 right: f(&self.right),
347 bottom: f(&self.bottom),
348 left: f(&self.left),
349 }
350 }
351
352 pub fn any<F: Fn(&T) -> bool>(&self, predicate: F) -> bool {
353 predicate(&self.top)
354 || predicate(&self.right)
355 || predicate(&self.bottom)
356 || predicate(&self.left)
357 }
358}
359
360impl Edges<Length> {
361 pub fn auto() -> Self {
362 Self {
363 top: Length::Auto,
364 right: Length::Auto,
365 bottom: Length::Auto,
366 left: Length::Auto,
367 }
368 }
369
370 pub fn zero() -> Self {
371 Self {
372 top: px(0.).into(),
373 right: px(0.).into(),
374 bottom: px(0.).into(),
375 left: px(0.).into(),
376 }
377 }
378}
379
380impl Edges<DefiniteLength> {
381 pub fn zero() -> Self {
382 Self {
383 top: px(0.).into(),
384 right: px(0.).into(),
385 bottom: px(0.).into(),
386 left: px(0.).into(),
387 }
388 }
389}
390
391impl Edges<AbsoluteLength> {
392 pub fn zero() -> Self {
393 Self {
394 top: px(0.).into(),
395 right: px(0.).into(),
396 bottom: px(0.).into(),
397 left: px(0.).into(),
398 }
399 }
400
401 pub fn to_pixels(&self, rem_size: Pixels) -> Edges<Pixels> {
402 Edges {
403 top: self.top.to_pixels(rem_size),
404 right: self.right.to_pixels(rem_size),
405 bottom: self.bottom.to_pixels(rem_size),
406 left: self.left.to_pixels(rem_size),
407 }
408 }
409}
410
411#[derive(Refineable, Clone, Default, Debug, Eq, PartialEq)]
412#[refineable(debug)]
413#[repr(C)]
414pub struct Corners<T: Clone + Debug> {
415 pub top_left: T,
416 pub top_right: T,
417 pub bottom_right: T,
418 pub bottom_left: T,
419}
420
421impl<T: Clone + Debug> Corners<T> {
422 pub fn map<U: Clone + Debug, F: Fn(&T) -> U>(&self, f: F) -> Corners<U> {
423 Corners {
424 top_left: f(&self.top_left),
425 top_right: f(&self.top_right),
426 bottom_right: f(&self.bottom_right),
427 bottom_left: f(&self.bottom_left),
428 }
429 }
430}
431
432impl<T: Clone + Debug + Mul<Output = T>> Mul for Corners<T> {
433 type Output = Self;
434
435 fn mul(self, rhs: Self) -> Self::Output {
436 Self {
437 top_left: self.top_left.clone() * rhs.top_left,
438 top_right: self.top_right.clone() * rhs.top_right,
439 bottom_right: self.bottom_right.clone() * rhs.bottom_right,
440 bottom_left: self.bottom_left.clone() * rhs.bottom_left,
441 }
442 }
443}
444
445impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Corners<T> {
446 fn mul_assign(&mut self, rhs: S) {
447 self.top_left = self.top_left.clone() * rhs.clone();
448 self.top_right = self.top_right.clone() * rhs.clone();
449 self.bottom_right = self.bottom_right.clone() * rhs.clone();
450 self.bottom_left = self.bottom_left.clone() * rhs;
451 }
452}
453
454impl<T: Clone + Debug + Copy> Copy for Corners<T> {}
455
456#[derive(Clone, Copy, Default, Add, AddAssign, Sub, SubAssign, Div, PartialEq, PartialOrd)]
457#[repr(transparent)]
458pub struct Pixels(pub(crate) f32);
459
460impl Mul<f32> for Pixels {
461 type Output = Pixels;
462
463 fn mul(self, other: f32) -> Pixels {
464 Pixels(self.0 * other)
465 }
466}
467
468impl Mul<Pixels> for f32 {
469 type Output = Pixels;
470
471 fn mul(self, rhs: Pixels) -> Self::Output {
472 Pixels(self * rhs.0)
473 }
474}
475
476impl MulAssign<f32> for Pixels {
477 fn mul_assign(&mut self, other: f32) {
478 self.0 *= other;
479 }
480}
481
482impl Pixels {
483 pub fn round(&self) -> Self {
484 Self(self.0.round())
485 }
486
487 pub fn floor(&self) -> Self {
488 Self(self.0.floor())
489 }
490
491 pub fn scale(&self, factor: f32) -> ScaledPixels {
492 ScaledPixels(self.0 * factor)
493 }
494}
495
496impl Mul<Pixels> for Pixels {
497 type Output = Pixels;
498
499 fn mul(self, rhs: Pixels) -> Self::Output {
500 Pixels(self.0 * rhs.0)
501 }
502}
503
504impl Eq for Pixels {}
505
506impl Ord for Pixels {
507 fn cmp(&self, other: &Self) -> std::cmp::Ordering {
508 self.0.partial_cmp(&other.0).unwrap()
509 }
510}
511
512impl std::hash::Hash for Pixels {
513 fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
514 self.0.to_bits().hash(state);
515 }
516}
517
518impl From<f64> for Pixels {
519 fn from(val: f64) -> Self {
520 Pixels(val as f32)
521 }
522}
523
524impl From<f32> for Pixels {
525 fn from(val: f32) -> Self {
526 Pixels(val)
527 }
528}
529
530impl Debug for Pixels {
531 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
532 write!(f, "{} px", self.0)
533 }
534}
535
536impl From<Pixels> for f32 {
537 fn from(pixels: Pixels) -> Self {
538 pixels.0
539 }
540}
541
542impl From<&Pixels> for f32 {
543 fn from(pixels: &Pixels) -> Self {
544 pixels.0
545 }
546}
547
548impl From<Pixels> for f64 {
549 fn from(pixels: Pixels) -> Self {
550 pixels.0 as f64
551 }
552}
553
554#[derive(
555 Add,
556 AddAssign,
557 Clone,
558 Copy,
559 Debug,
560 Default,
561 Div,
562 Eq,
563 Hash,
564 Ord,
565 PartialEq,
566 PartialOrd,
567 Sub,
568 SubAssign,
569)]
570#[repr(transparent)]
571pub struct DevicePixels(pub(crate) i32);
572
573impl DevicePixels {
574 pub fn to_bytes(&self, bytes_per_pixel: u8) -> u32 {
575 self.0 as u32 * bytes_per_pixel as u32
576 }
577}
578
579impl From<DevicePixels> for i32 {
580 fn from(device_pixels: DevicePixels) -> Self {
581 device_pixels.0
582 }
583}
584
585impl From<i32> for DevicePixels {
586 fn from(val: i32) -> Self {
587 DevicePixels(val)
588 }
589}
590
591impl From<DevicePixels> for u64 {
592 fn from(device_pixels: DevicePixels) -> Self {
593 device_pixels.0 as u64
594 }
595}
596
597impl From<u64> for DevicePixels {
598 fn from(val: u64) -> Self {
599 DevicePixels(val as i32)
600 }
601}
602
603#[derive(Clone, Copy, Default, Add, AddAssign, Sub, SubAssign, Div, PartialEq, PartialOrd)]
604#[repr(transparent)]
605pub struct ScaledPixels(pub(crate) f32);
606
607impl Eq for ScaledPixels {}
608
609impl Debug for ScaledPixels {
610 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
611 write!(f, "{} px (scaled)", self.0)
612 }
613}
614
615impl From<ScaledPixels> for DevicePixels {
616 fn from(scaled: ScaledPixels) -> Self {
617 DevicePixels(scaled.0.ceil() as i32)
618 }
619}
620
621impl From<DevicePixels> for ScaledPixels {
622 fn from(device: DevicePixels) -> Self {
623 ScaledPixels(device.0 as f32)
624 }
625}
626
627#[derive(Clone, Copy, Default, Add, Sub, Mul, Div)]
628pub struct Rems(f32);
629
630impl Mul<Pixels> for Rems {
631 type Output = Pixels;
632
633 fn mul(self, other: Pixels) -> Pixels {
634 Pixels(self.0 * other.0)
635 }
636}
637
638impl Debug for Rems {
639 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
640 write!(f, "{} rem", self.0)
641 }
642}
643
644#[derive(Clone, Copy, Debug)]
645pub enum AbsoluteLength {
646 Pixels(Pixels),
647 Rems(Rems),
648}
649
650impl AbsoluteLength {
651 pub fn is_zero(&self) -> bool {
652 match self {
653 AbsoluteLength::Pixels(px) => px.0 == 0.,
654 AbsoluteLength::Rems(rems) => rems.0 == 0.,
655 }
656 }
657}
658
659impl From<Pixels> for AbsoluteLength {
660 fn from(pixels: Pixels) -> Self {
661 AbsoluteLength::Pixels(pixels)
662 }
663}
664
665impl From<Rems> for AbsoluteLength {
666 fn from(rems: Rems) -> Self {
667 AbsoluteLength::Rems(rems)
668 }
669}
670
671impl AbsoluteLength {
672 pub fn to_pixels(&self, rem_size: Pixels) -> Pixels {
673 match self {
674 AbsoluteLength::Pixels(pixels) => *pixels,
675 AbsoluteLength::Rems(rems) => *rems * rem_size,
676 }
677 }
678}
679
680impl Default for AbsoluteLength {
681 fn default() -> Self {
682 px(0.).into()
683 }
684}
685
686/// A non-auto length that can be defined in pixels, rems, or percent of parent.
687#[derive(Clone, Copy)]
688pub enum DefiniteLength {
689 Absolute(AbsoluteLength),
690 /// A fraction of the parent's size between 0 and 1.
691 Fraction(f32),
692}
693
694impl DefiniteLength {
695 pub fn to_pixels(&self, base_size: AbsoluteLength, rem_size: Pixels) -> Pixels {
696 match self {
697 DefiniteLength::Absolute(size) => size.to_pixels(rem_size),
698 DefiniteLength::Fraction(fraction) => match base_size {
699 AbsoluteLength::Pixels(px) => px * *fraction,
700 AbsoluteLength::Rems(rems) => rems * rem_size * *fraction,
701 },
702 }
703 }
704}
705
706impl Debug for DefiniteLength {
707 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
708 match self {
709 DefiniteLength::Absolute(length) => Debug::fmt(length, f),
710 DefiniteLength::Fraction(fract) => write!(f, "{}%", (fract * 100.0) as i32),
711 }
712 }
713}
714
715impl From<Pixels> for DefiniteLength {
716 fn from(pixels: Pixels) -> Self {
717 Self::Absolute(pixels.into())
718 }
719}
720
721impl From<Rems> for DefiniteLength {
722 fn from(rems: Rems) -> Self {
723 Self::Absolute(rems.into())
724 }
725}
726
727impl From<AbsoluteLength> for DefiniteLength {
728 fn from(length: AbsoluteLength) -> Self {
729 Self::Absolute(length)
730 }
731}
732
733impl Default for DefiniteLength {
734 fn default() -> Self {
735 Self::Absolute(AbsoluteLength::default())
736 }
737}
738
739/// A length that can be defined in pixels, rems, percent of parent, or auto.
740#[derive(Clone, Copy)]
741pub enum Length {
742 Definite(DefiniteLength),
743 Auto,
744}
745
746impl Debug for Length {
747 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
748 match self {
749 Length::Definite(definite_length) => write!(f, "{:?}", definite_length),
750 Length::Auto => write!(f, "auto"),
751 }
752 }
753}
754
755pub fn relative(fraction: f32) -> DefiniteLength {
756 DefiniteLength::Fraction(fraction).into()
757}
758
759/// Returns the Golden Ratio, i.e. `~(1.0 + sqrt(5.0)) / 2.0`.
760pub fn phi() -> DefiniteLength {
761 relative(1.61803398875)
762}
763
764pub fn rems(rems: f32) -> Rems {
765 Rems(rems)
766}
767
768pub fn px(pixels: f32) -> Pixels {
769 Pixels(pixels)
770}
771
772pub fn auto() -> Length {
773 Length::Auto
774}
775
776impl From<Pixels> for Length {
777 fn from(pixels: Pixels) -> Self {
778 Self::Definite(pixels.into())
779 }
780}
781
782impl From<Rems> for Length {
783 fn from(rems: Rems) -> Self {
784 Self::Definite(rems.into())
785 }
786}
787
788impl From<DefiniteLength> for Length {
789 fn from(length: DefiniteLength) -> Self {
790 Self::Definite(length)
791 }
792}
793
794impl From<AbsoluteLength> for Length {
795 fn from(length: AbsoluteLength) -> Self {
796 Self::Definite(length.into())
797 }
798}
799
800impl Default for Length {
801 fn default() -> Self {
802 Self::Definite(DefiniteLength::default())
803 }
804}
805
806impl From<()> for Length {
807 fn from(_: ()) -> Self {
808 Self::Definite(DefiniteLength::default())
809 }
810}
811
812pub trait IsZero {
813 fn is_zero(&self) -> bool;
814}
815
816impl IsZero for DevicePixels {
817 fn is_zero(&self) -> bool {
818 self.0 == 0
819 }
820}
821
822impl IsZero for ScaledPixels {
823 fn is_zero(&self) -> bool {
824 self.0 == 0.
825 }
826}
827
828impl IsZero for Pixels {
829 fn is_zero(&self) -> bool {
830 self.0 == 0.
831 }
832}
833
834impl IsZero for Rems {
835 fn is_zero(&self) -> bool {
836 self.0 == 0.
837 }
838}
839
840impl IsZero for AbsoluteLength {
841 fn is_zero(&self) -> bool {
842 match self {
843 AbsoluteLength::Pixels(pixels) => pixels.is_zero(),
844 AbsoluteLength::Rems(rems) => rems.is_zero(),
845 }
846 }
847}
848
849impl IsZero for DefiniteLength {
850 fn is_zero(&self) -> bool {
851 match self {
852 DefiniteLength::Absolute(length) => length.is_zero(),
853 DefiniteLength::Fraction(fraction) => *fraction == 0.,
854 }
855 }
856}
857
858impl IsZero for Length {
859 fn is_zero(&self) -> bool {
860 match self {
861 Length::Definite(length) => length.is_zero(),
862 Length::Auto => false,
863 }
864 }
865}
866
867impl<T: IsZero + Debug + Clone> IsZero for Point<T> {
868 fn is_zero(&self) -> bool {
869 self.x.is_zero() && self.y.is_zero()
870 }
871}
872
873impl<T: IsZero + Debug + Clone> IsZero for Size<T> {
874 fn is_zero(&self) -> bool {
875 self.width.is_zero() && self.height.is_zero()
876 }
877}
878
879impl<T: IsZero + Debug + Clone> IsZero for Bounds<T> {
880 fn is_zero(&self) -> bool {
881 self.origin.is_zero() && self.size.is_zero()
882 }
883}