computeSizeWithRatio function
Returns a desired dimension of layout
that respect r
aspect ratio
Implementation
Size computeSizeWithRatio(Size layout, double r) {
if (layout.aspectRatio == r) {
return layout;
}
if (layout.aspectRatio > r) {
return Size(layout.height * r, layout.height);
}
if (layout.aspectRatio < r) {
return Size(layout.width, layout.width / r);
}
assert(false, 'An error occured while computing the aspectRatio');
return Size.zero;
}