applyAspectRatio function
Implementation
Size applyAspectRatio(Rect src, double aspectRatio) {
double width = src.longestSide;
double height;
// If the width is infinite infer the height from the width.
if (width.isFinite) {
height = width / aspectRatio;
} else {
height = src.height;
width = height * aspectRatio;
}
if (width > src.width) {
width = src.width;
height = width / aspectRatio;
}
if (height > src.height) {
height = src.height;
width = height * aspectRatio;
}
return Size(width, height);
}