lib_ui/ui/toast/toast_manager.cpp
2019-09-20 11:04:55 +03:00

127 lines
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.key()->parentWidget() == o) {
i.key()->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;
}
void Manager::addToast(std::unique_ptr<Instance> &&toast) {
_toasts.push_back(toast.release());
Instance *t = _toasts.back();
Widget *widget = t->_widget.get();
_toastByWidget.insert(widget, t);
connect(widget, SIGNAL(destroyed(QObject*)), this, SLOT(onToastWidgetDestroyed(QObject*)));
if (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.insert(parent);
parent->installEventFilter(this);
}
}
auto oldHideNearestMs = _toastByHideTime.isEmpty() ? 0LL : _toastByHideTime.firstKey();
_toastByHideTime.insert(t->_hideAtMs, t);
if (!oldHideNearestMs || _toastByHideTime.firstKey() < oldHideNearestMs) {
startNextHideTimer();
}
}
void Manager::hideByTimer() {
auto now = crl::now();
for (auto i = _toastByHideTime.begin(); i != _toastByHideTime.cend();) {
if (i.key() <= now) {
auto toast = i.value();
i = _toastByHideTime.erase(i);
toast->hideAnimated();
} else {
break;
}
}
startNextHideTimer();
}
void Manager::onToastWidgetDestroyed(QObject *widget) {
auto i = _toastByWidget.find(static_cast<Widget*>(widget));
if (i != _toastByWidget.cend()) {
auto toast = i.value();
_toastByWidget.erase(i);
toast->_widget.release();
int index = _toasts.indexOf(toast);
if (index >= 0) {
_toasts.removeAt(index);
delete toast;
}
}
}
void Manager::startNextHideTimer() {
if (_toastByHideTime.isEmpty()) return;
auto ms = crl::now();
if (ms >= _toastByHideTime.firstKey()) {
crl::on_main(this, [=] {
hideByTimer();
});
} else {
_hideTimer.callOnce(_toastByHideTime.firstKey() - ms);
}
}
Manager::~Manager() {
ManagersMap.remove(parent());
}
} // namespace internal
} // namespace Toast
} // namespace Ui