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Added class for radial gradient color animation.

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23rd 2020-11-30 09:17:12 +03:00 • committed by John Preston
parent ee969568ac
commit baea14611e
1 changed files with 50 additions and 0 deletions
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50
ui/effects/animation_value.h
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@ -12,6 +12,7 @@
#include <QtGui/QPainterPath>
#include <QtGui/QLinearGradient>
#include <QtGui/QRadialGradient>
namespace anim {
@ -404,6 +405,55 @@ private:
};
class radial_gradient {
public:
radial_gradient(
std::vector<QColor> colors_from,
std::vector<QColor> colors_to,
QPointF center,
float radius)
: _colors_from(colors_from)
, _colors_to(colors_to)
, _center(center)
, _radius(radius)
, _gradient_from(gradient(colors_from))
, _gradient_to(gradient(colors_to)) {
Expects(colors_from.size() == colors_to.size());
}
QRadialGradient gradient(float64 b_ratio) const {
if (b_ratio == 0.) {
return _gradient_from;
} else if (b_ratio == 1.) {
return _gradient_to;
}
auto colors = std::vector<QColor>(_colors_to.size());
for (auto i = 0; i < colors.size(); i++) {
colors[i] = color(_colors_from[i], _colors_to[i], b_ratio);
}
return gradient(colors);
}
private:
QRadialGradient gradient(const std::vector<QColor> &colors) const {
auto gradient = QRadialGradient(_center, _radius);
const auto size = colors.size();
for (auto i = 0; i < size; i++) {
gradient.setColorAt(i / (size - 1), colors[i]);
}
return gradient;
}
std::vector<QColor> _colors_from;
std::vector<QColor> _colors_to;
QPointF _center;
float _radius;
QRadialGradient _gradient_from;
QRadialGradient _gradient_to;
};
class continuous_value {
public:
continuous_value() = default;