89 lines
2 KiB
C++
89 lines
2 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#include "ui/paint/blobs.h"
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#include "ui/painter.h"
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namespace Ui::Paint {
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Blobs::Blobs(
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std::vector<BlobData> blobDatas,
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float levelDuration,
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float maxLevel)
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: _maxLevel(maxLevel)
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, _blobDatas(blobDatas)
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, _levelValue(levelDuration) {
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init();
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}
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void Blobs::init() {
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for (const auto &data : _blobDatas) {
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auto blob = Paint::BlobBezier(data.segmentsCount, data.minScale);
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blob.setMinRadius(data.minRadius);
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blob.setMaxRadius(data.maxRadius);
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blob.generateBlob();
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_blobs.push_back(std::move(blob));
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}
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}
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float Blobs::maxRadius() const {
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const auto maxOfRadiuses = [](const BlobData data) {
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return std::max(data.maxRadius, data.minRadius);
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};
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const auto max = *ranges::max_element(
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_blobDatas,
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std::less<>(),
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maxOfRadiuses);
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return maxOfRadiuses(max);
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}
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int Blobs::size() const {
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return _blobs.size();
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}
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void Blobs::setRadiusAt(
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rpl::producer<float> &&radius,
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int index,
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bool isMax) {
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Expects(index >= 0 && index < size());
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std::move(
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radius
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) | rpl::start_with_next([=](float r) {
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if (isMax) {
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_blobs[index].setMaxRadius(r);
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} else {
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_blobs[index].setMinRadius(r);
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}
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}, _lifetime);
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}
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void Blobs::setLevel(float value) {
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const auto to = std::min(_maxLevel, value) / _maxLevel;
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_levelValue.start(to);
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}
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void Blobs::paint(Painter &p, const QBrush &brush) {
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const auto opacity = p.opacity();
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for (auto i = 0; i < _blobs.size(); i++) {
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_blobs[i].update(_levelValue.current(), _blobDatas[i].speedScale);
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const auto alpha = _blobDatas[i].alpha;
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if (alpha != 1.) {
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p.setOpacity(opacity * alpha);
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}
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_blobs[i].paint(p, brush);
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}
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}
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void Blobs::updateLevel(crl::time dt) {
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_levelValue.update((dt > 20) ? 17 : dt);
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}
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float64 Blobs::currentLevel() const {
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return _levelValue.current();
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}
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} // namespace Ui::Paint
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