lib_ui/ui/toast/toast_manager.cpp
2020-04-30 13:16:15 +04:00

147 lines
3.3 KiB
C++

// This file is part of Desktop App Toolkit,
// a set of libraries for developing nice desktop applications.
//
// For license and copyright information please follow this link:
// https://github.com/desktop-app/legal/blob/master/LEGAL
//
#include "ui/toast/toast_manager.h"
#include "ui/toast/toast_widget.h"
namespace Ui {
namespace Toast {
namespace internal {
namespace {
base::flat_map<not_null<QObject*>, not_null<Manager*>> ManagersMap;
} // namespace
Manager::Manager(not_null<QWidget*> parent, const CreateTag &)
: QObject(parent)
, _hideTimer([=] { hideByTimer(); }) {
}
bool Manager::eventFilter(QObject *o, QEvent *e) {
if (e->type() == QEvent::Resize) {
for (auto i = _toastByWidget.cbegin(), e = _toastByWidget.cend(); i != e; ++i) {
if (i->first->parentWidget() == o) {
i->first->onParentResized();
}
}
}
return QObject::eventFilter(o, e);
}
not_null<Manager*> Manager::instance(not_null<QWidget*> parent) {
auto i = ManagersMap.find(parent);
if (i == end(ManagersMap)) {
i = ManagersMap.emplace(
parent,
Ui::CreateChild<Manager>(parent.get(), CreateTag())
).first;
}
return i->second;
}
base::weak_ptr<Instance> Manager::addToast(
std::unique_ptr<Instance> &&toast) {
_toasts.push_back(std::move(toast));
const auto t = _toasts.back().get();
const auto widget = t->_widget.get();
_toastByWidget.emplace(widget, t);
connect(widget, &QObject::destroyed, [=] {
toastWidgetDestroyed(widget);
});
if (const auto parent = widget->parentWidget()) {
auto found = false;
for (auto i = _toastParents.begin(); i != _toastParents.cend();) {
if (*i == parent) {
found = true;
break;
} else if (!*i) {
i = _toastParents.erase(i);
} else {
++i;
}
}
if (!found) {
_toastParents.push_back(parent);
parent->installEventFilter(this);
}
}
const auto nearestHide = _toastByHideTime.empty()
? 0LL
: _toastByHideTime.begin()->first;
_toastByHideTime.emplace(t->_hideAt, t);
if (!nearestHide || _toastByHideTime.begin()->first < nearestHide) {
startNextHideTimer();
}
return make_weak(t);
}
void Manager::hideByTimer() {
auto now = crl::now();
for (auto i = _toastByHideTime.begin(); i != _toastByHideTime.cend();) {
if (i->first <= now) {
const auto toast = i->second;
i = _toastByHideTime.erase(i);
toast->hideAnimated();
} else {
break;
}
}
startNextHideTimer();
}
void Manager::toastWidgetDestroyed(QObject *widget) {
const auto i = _toastByWidget.find(static_cast<Widget*>(widget));
if (i == _toastByWidget.cend()) {
return;
}
const auto toast = i->second;
_toastByWidget.erase(i);
toast->_widget.release();
for (auto i = begin(_toastByHideTime); i != end(_toastByHideTime); ++i) {
if (i->second == toast) {
_toastByHideTime.erase(i);
break;
}
}
const auto j = ranges::find(
_toasts,
toast.get(),
&std::unique_ptr<Instance>::get);
if (j != end(_toasts)) {
_toasts.erase(j);
}
}
void Manager::startNextHideTimer() {
if (_toastByHideTime.empty()) {
return;
}
auto ms = crl::now();
if (ms >= _toastByHideTime.begin()->first) {
crl::on_main(this, [=] {
hideByTimer();
});
} else {
_hideTimer.callOnce(_toastByHideTime.begin()->first - ms);
}
}
Manager::~Manager() {
ManagersMap.remove(parent());
_toastByWidget.clear();
_toasts.clear();
}
} // namespace internal
} // namespace Toast
} // namespace Ui