Extracted common code for gradient classes.
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1 changed files with 53 additions and 177 deletions
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@ -14,78 +14,24 @@
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namespace anim {
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class linear_gradient {
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public:
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linear_gradient(
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std::vector<QColor> colors_from,
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std::vector<QColor> colors_to,
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QPointF point1,
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QPointF point2)
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: _colors_from(colors_from)
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, _colors_to(colors_to)
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, _point1(point1)
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, _point2(point2)
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, _gradient_from(gradient(colors_from))
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, _gradient_to(gradient(colors_to)) {
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Expects(colors_from.size() == colors_to.size());
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}
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QLinearGradient gradient(float64 b_ratio) const {
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if (b_ratio == 0.) {
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return _gradient_from;
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} else if (b_ratio == 1.) {
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return _gradient_to;
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}
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auto colors = std::vector<QColor>(_colors_to.size());
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for (auto i = 0; i < colors.size(); i++) {
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colors[i] = color(_colors_from[i], _colors_to[i], b_ratio);
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}
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return gradient(colors);
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}
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private:
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QLinearGradient gradient(const std::vector<QColor> &colors) const {
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auto gradient = QLinearGradient(_point1, _point2);
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const auto size = colors.size();
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for (auto i = 0; i < size; i++) {
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gradient.setColorAt(i / (size - 1), colors[i]);
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}
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return gradient;
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}
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std::vector<QColor> _colors_from;
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std::vector<QColor> _colors_to;
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QPointF _point1;
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QPointF _point2;
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QLinearGradient _gradient_from;
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QLinearGradient _gradient_to;
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};
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namespace details {
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template <typename T>
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class linear_gradients {
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class gradients {
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public:
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linear_gradients(
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base::flat_map<T, std::vector<QColor>> colors,
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QPointF point1,
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QPointF point2)
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: _colors(colors)
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, _point1(point1)
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, _point2(point2) {
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gradients(base::flat_map<T, std::vector<QColor>> colors)
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: _colors(colors) {
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Expects(_colors.size() > 0);
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cache_gradients();
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}
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QLinearGradient gradient(T state1, T state2, float64 b_ratio) const {
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QGradient gradient(T state1, T state2, float64 b_ratio) const {
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if (b_ratio == 0.) {
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return _gradients.find(state1)->second;
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} else if (b_ratio == 1.) {
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return _gradients.find(state2)->second;
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}
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auto gradient = QLinearGradient(_point1, _point2);
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auto gradient = empty_gradient();
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const auto size = _colors.front().second.size();
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const auto colors1 = _colors.find(state1);
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const auto colors2 = _colors.find(state2);
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@ -100,124 +46,70 @@ public:
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return gradient;
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}
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protected:
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virtual QGradient empty_gradient() const = 0;
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void cache_gradients() {
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_gradients = base::flat_map<T, QGradient>();
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for (const auto &[key, value] : _colors) {
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_gradients.emplace(key, gradient(value));
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}
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}
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QGradient gradient(const std::vector<QColor> &colors) const {
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auto gradient = empty_gradient();
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const auto size = colors.size();
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for (auto i = 0; i < size; i++) {
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gradient.setColorAt(i / (size - 1), colors[i]);
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}
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return gradient;
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}
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base::flat_map<T, std::vector<QColor>> _colors;
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base::flat_map<T, QGradient> _gradients;
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};
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} // namespace details
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template <typename T>
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class linear_gradients final : public details::gradients<T> {
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public:
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linear_gradients(
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base::flat_map<T, std::vector<QColor>> colors,
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QPointF point1,
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QPointF point2)
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: details::gradients<T>(std::move(colors)) {
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set_points(point1, point2);
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}
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void set_points(QPointF point1, QPointF point2) {
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if (_point1 == point1 && _point2 == point2) {
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return;
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}
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_point1 = point1;
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_point2 = point2;
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cache_gradients();
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details::gradients<T>::cache_gradients();
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}
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private:
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void cache_gradients() {
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_gradients = base::flat_map<T, QLinearGradient>();
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for (const auto &[key, value] : _colors) {
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_gradients.emplace(key, gradient(value));
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}
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QGradient empty_gradient() const override {
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return QLinearGradient(_point1, _point2);
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}
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QLinearGradient gradient(const std::vector<QColor> &colors) const {
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auto gradient = QLinearGradient(_point1, _point2);
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const auto size = colors.size();
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for (auto i = 0; i < size; i++) {
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gradient.setColorAt(i / (size - 1), colors[i]);
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}
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return gradient;
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}
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base::flat_map<T, std::vector<QColor>> _colors;
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QPointF _point1;
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QPointF _point2;
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base::flat_map<T, QLinearGradient> _gradients;
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};
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class radial_gradient {
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public:
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radial_gradient(
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std::vector<QColor> colors_from,
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std::vector<QColor> colors_to,
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QPointF center,
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float radius)
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: _colors_from(colors_from)
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, _colors_to(colors_to)
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, _center(center)
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, _radius(radius)
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, _gradient_from(gradient(colors_from))
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, _gradient_to(gradient(colors_to)) {
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Expects(colors_from.size() == colors_to.size());
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}
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QRadialGradient gradient(float64 b_ratio) const {
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if (b_ratio == 0.) {
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return _gradient_from;
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} else if (b_ratio == 1.) {
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return _gradient_to;
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}
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auto colors = std::vector<QColor>(_colors_to.size());
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for (auto i = 0; i < colors.size(); i++) {
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colors[i] = color(_colors_from[i], _colors_to[i], b_ratio);
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}
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return gradient(colors);
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}
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private:
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QRadialGradient gradient(const std::vector<QColor> &colors) const {
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auto gradient = QRadialGradient(_center, _radius);
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const auto size = colors.size();
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for (auto i = 0; i < size; i++) {
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gradient.setColorAt(i / (size - 1), colors[i]);
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}
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return gradient;
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}
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std::vector<QColor> _colors_from;
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std::vector<QColor> _colors_to;
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QPointF _center;
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float _radius;
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QRadialGradient _gradient_from;
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QRadialGradient _gradient_to;
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};
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template <typename T>
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class radial_gradients {
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class radial_gradients final : public details::gradients<T> {
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public:
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radial_gradients(
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base::flat_map<T, std::vector<QColor>> colors,
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QPointF center,
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float radius)
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: _colors(colors)
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, _center(center)
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, _radius(radius) {
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Expects(_colors.size() > 0);
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cache_gradients();
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}
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QRadialGradient gradient(T state1, T state2, float64 b_ratio) const {
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if (b_ratio == 0.) {
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return _gradients.find(state1)->second;
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} else if (b_ratio == 1.) {
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return _gradients.find(state2)->second;
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}
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auto gradient = QRadialGradient(_center, _radius);
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const auto size = _colors.front().second.size();
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const auto colors1 = _colors.find(state1);
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const auto colors2 = _colors.find(state2);
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Assert(colors1 != end(_colors));
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Assert(colors2 != end(_colors));
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for (auto i = 0; i < size; i++) {
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auto c = color(colors1->second[i], colors2->second[i], b_ratio);
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gradient.setColorAt(i / (size - 1), std::move(c));
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}
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return gradient;
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: details::gradients<T>(std::move(colors)) {
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set_points(center, radius);
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}
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void set_points(QPointF center, float radius) {
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@ -226,32 +118,16 @@ public:
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}
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_center = center;
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_radius = radius;
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cache_gradients();
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details::gradients<T>::cache_gradients();
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}
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private:
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void cache_gradients() {
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_gradients = base::flat_map<T, QRadialGradient>();
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for (const auto &[key, value] : _colors) {
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_gradients.emplace(key, gradient(value));
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}
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QGradient empty_gradient() const override {
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return QRadialGradient(_center, _radius);
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}
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QRadialGradient gradient(const std::vector<QColor> &colors) const {
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auto gradient = QRadialGradient(_center, _radius);
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const auto size = colors.size();
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for (auto i = 0; i < size; i++) {
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gradient.setColorAt(i / (size - 1), colors[i]);
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}
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return gradient;
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}
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base::flat_map<T, std::vector<QColor>> _colors;
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QPointF _center;
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float _radius;
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base::flat_map<T, QRadialGradient> _gradients;
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float _radius = 0.;
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};
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} // namespace anim
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