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Bug 1726620 Part 1 - Generalize IntCoordTyped template to take a parameter as the underlying type. r=botond

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This shouldn't change the behavior, but it allows us to define 64-bit
`IntCoordTyped` in Part 2.

Differential Revision: https://phabricator.services.mozilla.com/D123265
This commit is contained in:
Ting-Yu Lin 2021-08-24 17:19:21 +00:00
parent d6e6c4a9a2
commit 8035e9dde5
1 changed files with 10 additions and 10 deletions
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20
gfx/2d/Coord.h
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@ -21,7 +21,7 @@ struct IsPixel;
namespace gfx {
template <class units>
template <class units, class Rep = int32_t>
struct IntCoordTyped;
template <class units, class F = Float>
struct CoordTyped;
@ -37,9 +37,9 @@ struct CoordTyped;
template <class coord, class primitive>
struct CommonType;
template <class units, class primitive>
struct CommonType<IntCoordTyped<units>, primitive> {
using type = decltype(int32_t() + primitive());
template <class units, class Rep, class primitive>
struct CommonType<IntCoordTyped<units, Rep>, primitive> {
using type = decltype(Rep() + primitive());
};
template <class units, class F, class primitive>
@ -85,19 +85,19 @@ struct CoordOperatorsHelper<true, coord, primitive> {
// 'scale / coord' is intentionally omitted because it doesn't make sense.
};
template <class units>
template <class units, class Rep>
struct IntCoordTyped
: public BaseCoord<int32_t, IntCoordTyped<units>>,
: public BaseCoord<Rep, IntCoordTyped<units, Rep>>,
public units,
public CoordOperatorsHelper<true, IntCoordTyped<units>, float>,
public CoordOperatorsHelper<true, IntCoordTyped<units>, double> {
public CoordOperatorsHelper<true, IntCoordTyped<units, Rep>, float>,
public CoordOperatorsHelper<true, IntCoordTyped<units, Rep>, double> {
static_assert(IsPixel<units>::value,
"'units' must be a coordinate system tag");
using Super = BaseCoord<int32_t, IntCoordTyped<units>>;
using Super = BaseCoord<Rep, IntCoordTyped<units, Rep>>;
constexpr IntCoordTyped() : Super() {}
constexpr MOZ_IMPLICIT IntCoordTyped(int32_t aValue) : Super(aValue) {}
constexpr MOZ_IMPLICIT IntCoordTyped(Rep aValue) : Super(aValue) {}
};
template <class units, class F>