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Add Color::brighter/darker functions

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These are exposed in .60 as well as in Rust and C++ and implemented by
converting to HSV color space and adjusting the brightness (value).
This commit is contained in:
Simon Hausmann 2021-02-22 11:05:46 +01:00
parent a42c3a0b01
commit 391d0152f0
13 changed files with 271 additions and 3 deletions
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19
api/sixtyfps-cpp/include/sixtyfps_color.h
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@ -133,6 +133,9 @@ public:
/// Returns the alpha channel of the color as u8 in the range 0..255.
uint8_t alpha() const { return inner.alpha; }
inline Color brighter(float factor) const;
inline Color darker(float factor) const;
/// Returns true if \a lhs has the same values for the individual color channels as \rhs; false
/// otherwise.
friend bool operator==(const Color &lhs, const Color &rhs)
@ -156,7 +159,7 @@ public:
}
// FIXME: we need this to create GradientStop
operator const cbindgen_private::types::Color&() { return inner; }
operator const cbindgen_private::types::Color &() { return inner; }
private:
cbindgen_private::types::Color inner;
@ -164,6 +167,20 @@ private:
friend class Brush;
};
inline Color Color::brighter(float factor) const
{
Color result;
cbindgen_private::types::sixtyfps_color_brighter(&inner, factor, &result.inner);
return result;
}
inline Color Color::darker(float factor) const
{
Color result;
cbindgen_private::types::sixtyfps_color_darker(&inner, factor, &result.inner);
return result;
}
template<>
RgbaColor<uint8_t>::RgbaColor(const Color &color)
{