Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2025-02-26 20:30:41 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Bug 1167882 - Add utility functions MaxScaleRatio() and MinScaleRatio() to Units.h. r=kats

Browse Source 
--HG--
extra : source : 17698f57d1cf14958e1ce3006abe5d9671cd18a7
This commit is contained in:
Botond Ballo 2015-05-27 16:53:01 -04:00
parent a1ee749697
commit 9f96d5973b
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
layout/base/Units.h
View File

@ -576,6 +576,21 @@ gfx::MarginTyped<dst> operator/(const gfx::MarginTyped<src>& aMargin, const gfx:
aMargin.left / aScale.xScale);
}
// Calculate the max or min or the ratios of the widths and heights of two
// sizes, returning a scale factor in the correct units.
template<class src, class dst>
gfx::ScaleFactor<src, dst> MaxScaleRatio(const gfx::SizeTyped<dst>& aDestSize, const gfx::SizeTyped<src>& aSrcSize) {
return gfx::ScaleFactor<src, dst>(std::max(aDestSize.width / aSrcSize.width,
aDestSize.height / aSrcSize.height));
}
template<class src, class dst>
gfx::ScaleFactor<src, dst> MinScaleRatio(const gfx::SizeTyped<dst>& aDestSize, const gfx::SizeTyped<src>& aSrcSize) {
return gfx::ScaleFactor<src, dst>(std::min(aDestSize.width / aSrcSize.width,
aDestSize.height / aSrcSize.height));
}
}
#endif