69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
/*
|
|
This file is part of Telegram Desktop,
|
|
the official desktop application for the Telegram messaging service.
|
|
|
|
For license and copyright information please follow this link:
|
|
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
|
|
*/
|
|
#include "statistics/chart_line_view_context.h"
|
|
|
|
namespace Statistic {
|
|
namespace {
|
|
constexpr auto kAlphaDuration = float64(200);
|
|
} // namespace
|
|
|
|
void ChartLineViewContext::setEnabled(int id, bool enabled, crl::time now) {
|
|
const auto it = _entries.find(id);
|
|
if (it == end(_entries)) {
|
|
_entries[id] = Entry{ .enabled = enabled, .startedAt = now };
|
|
} else if (it->second.enabled != enabled) {
|
|
auto &entry = it->second;
|
|
entry.enabled = enabled;
|
|
entry.startedAt = now
|
|
- kAlphaDuration * (enabled ? entry.alpha : (1. - entry.alpha));
|
|
}
|
|
_isFinished = false;
|
|
}
|
|
|
|
bool ChartLineViewContext::isFinished() const {
|
|
return _isFinished;
|
|
}
|
|
|
|
bool ChartLineViewContext::isEnabled(int id) const {
|
|
const auto it = _entries.find(id);
|
|
return (it == end(_entries)) ? true : it->second.enabled;
|
|
}
|
|
|
|
float64 ChartLineViewContext::alpha(int id) const {
|
|
const auto it = _entries.find(id);
|
|
return (it == end(_entries)) ? 1. : it->second.alpha;
|
|
}
|
|
|
|
void ChartLineViewContext::tick(crl::time now) {
|
|
auto finishedCount = 0;
|
|
auto idsToRemove = std::vector<int>();
|
|
for (auto &[id, entry] : _entries) {
|
|
if (!entry.startedAt) {
|
|
continue;
|
|
}
|
|
const auto progress = (now - entry.startedAt) / kAlphaDuration;
|
|
entry.alpha = std::clamp(
|
|
entry.enabled ? progress : (1. - progress),
|
|
0.,
|
|
1.);
|
|
if (entry.alpha == 1.) {
|
|
idsToRemove.push_back(id);
|
|
}
|
|
if (progress >= 1.) {
|
|
finishedCount++;
|
|
}
|
|
}
|
|
_isFinished = (finishedCount == _entries.size());
|
|
for (const auto &id : idsToRemove) {
|
|
_entries.remove(id);
|
|
}
|
|
}
|
|
|
|
|
|
} // namespace Statistic
|