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Allow .darker and .brighter on Brush

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Olivier Goffart 2022-04-12 10:07:56 +02:00 • committed by Olivier Goffart
parent c825eee228
commit 54a6cb22ee
8 changed files with 113 additions and 15 deletions
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46
api/cpp/include/slint_brush.h
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@ -82,6 +82,15 @@ public:
/// of the first stop.
inline Color color() const;
/// Returns a new version of this brush that has the brightness increased
/// by the specified factor. This is done by calling Color::brighter on
/// all the colors of this brush.
inline Brush brighter(float factor) const;
/// Returns a new version of this color that has the brightness decreased
/// by the specified factor. This is done by calling Color::darker on
/// all the colors of this brush.
inline Brush darker(float factor) const;
/// Returns true if \a a is equal to \a b. If \a a holds a color, then \a b must also hold a
/// color that is identical to \a a's color. If it holds a gradient, then the gradients must be
/// identical. Returns false if the brushes differ in what they hold or their respective color
@ -113,4 +122,41 @@ Color Brush::color() const
return result;
}
inline Brush Brush::brighter(float factor) const
{
Brush result = *this;
switch (data.tag) {
case Tag::SolidColor: {
cbindgen_private::types::slint_color_brighter(&data.solid_color._0, factor,
&result.data.solid_color._0);
break;
}
case Tag::LinearGradient:
for (std::size_t i = 1; i < data.linear_gradient._0.size(); ++i) {
cbindgen_private::types::slint_color_brighter(&data.linear_gradient._0[i].color, factor,
&result.data.linear_gradient._0[i].color);
}
break;
}
return result;
}
inline Brush Brush::darker(float factor) const
{
Brush result = *this;
switch (data.tag) {
case Tag::SolidColor: {
cbindgen_private::types::slint_color_darker(&data.solid_color._0, factor,
&result.data.solid_color._0);
break;
}
case Tag::LinearGradient:
for (std::size_t i = 1; i < data.linear_gradient._0.size(); ++i) {
cbindgen_private::types::slint_color_darker(&data.linear_gradient._0[i].color, factor,
&result.data.linear_gradient._0[i].color);
}
break;
}
return result;
}
}