tdesktop/Telegram/SourceFiles/ui/boxes/country_select_box.cpp

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/*
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 "ui/boxes/country_select_box.h"
#include "lang/lang_keys.h"
#include "ui/widgets/scroll_area.h"
#include "ui/widgets/multi_select.h"
#include "ui/effects/ripple_animation.h"
#include "countries/countries_instance.h"
#include "styles/style_layers.h"
#include "styles/style_boxes.h"
#include "styles/style_intro.h"
#include <QtCore/QRegularExpression>
namespace Ui {
namespace {
QString LastValidISO;
} // namespace
class CountrySelectBox::Inner : public RpWidget {
public:
Inner(QWidget *parent, const QString &iso, Type type);
~Inner();
void updateFilter(QString filter = QString());
void selectSkip(int32 dir);
void selectSkipPage(int32 h, int32 dir);
void chooseCountry();
void refresh();
[[nodiscard]] rpl::producer<Entry> countryChosen() const {
return _countryChosen.events();
}
[[nodiscard]] rpl::producer<ScrollToRequest> mustScrollTo() const {
return _mustScrollTo.events();
}
protected:
void paintEvent(QPaintEvent *e) override;
void enterEventHook(QEnterEvent *e) override;
void leaveEventHook(QEvent *e) override;
void mouseMoveEvent(QMouseEvent *e) override;
void mousePressEvent(QMouseEvent *e) override;
void mouseReleaseEvent(QMouseEvent *e) override;
private:
void init();
void updateSelected() {
updateSelected(mapFromGlobal(QCursor::pos()));
}
void updateSelected(QPoint localPos);
void updateSelectedRow();
void updateRow(int index);
void setPressed(int pressed);
const std::vector<Entry> &current() const;
Type _type = Type::Phones;
int _rowHeight = 0;
int _selected = -1;
int _pressed = -1;
QString _filter;
bool _mouseSelection = false;
std::vector<std::unique_ptr<RippleAnimation>> _ripples;
std::vector<Entry> _list;
std::vector<Entry> _filtered;
base::flat_map<QChar, std::vector<int>> _byLetter;
std::vector<std::vector<QString>> _namesList;
rpl::event_stream<Entry> _countryChosen;
rpl::event_stream<ScrollToRequest> _mustScrollTo;
};
CountrySelectBox::CountrySelectBox(QWidget*)
: CountrySelectBox(nullptr, QString(), Type::Phones) {
}
CountrySelectBox::CountrySelectBox(QWidget*, const QString &iso, Type type)
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: _select(this, st::defaultMultiSelect, tr::lng_country_ph())
, _ownedInner(this, iso, type) {
}
rpl::producer<QString> CountrySelectBox::countryChosen() const {
Expects(_ownedInner != nullptr || _inner != nullptr);
return (_ownedInner
? _ownedInner.data()
: _inner.data())->countryChosen() | rpl::map([](const Entry &e) {
return e.iso2;
});
}
rpl::producer<CountrySelectBox::Entry> CountrySelectBox::entryChosen() const {
Expects(_ownedInner != nullptr || _inner != nullptr);
return (_ownedInner
? _ownedInner.data()
: _inner.data())->countryChosen();
}
void CountrySelectBox::prepare() {
setTitle(tr::lng_country_select());
_select->resizeToWidth(st::boxWidth);
_select->setQueryChangedCallback([=](const QString &query) {
applyFilterUpdate(query);
});
_select->setSubmittedCallback([=](Qt::KeyboardModifiers) {
submit();
});
_inner = setInnerWidget(
std::move(_ownedInner),
st::countriesScroll,
_select->height());
addButton(tr::lng_close(), [=] { closeBox(); });
setDimensions(st::boxWidth, st::boxMaxListHeight);
_inner->mustScrollTo(
) | rpl::start_with_next([=](ScrollToRequest request) {
scrollToY(request.ymin, request.ymax);
}, lifetime());
}
void CountrySelectBox::submit() {
_inner->chooseCountry();
}
void CountrySelectBox::keyPressEvent(QKeyEvent *e) {
if (e->key() == Qt::Key_Down) {
_inner->selectSkip(1);
} else if (e->key() == Qt::Key_Up) {
_inner->selectSkip(-1);
} else if (e->key() == Qt::Key_PageDown) {
_inner->selectSkipPage(height() - _select->height(), 1);
} else if (e->key() == Qt::Key_PageUp) {
_inner->selectSkipPage(height() - _select->height(), -1);
} else {
BoxContent::keyPressEvent(e);
}
}
void CountrySelectBox::resizeEvent(QResizeEvent *e) {
BoxContent::resizeEvent(e);
_select->resizeToWidth(width());
_select->moveToLeft(0, 0);
_inner->resizeToWidth(width());
}
void CountrySelectBox::applyFilterUpdate(const QString &query) {
scrollToY(0);
_inner->updateFilter(query);
}
void CountrySelectBox::setInnerFocus() {
_select->setInnerFocus();
}
CountrySelectBox::Inner::Inner(
QWidget *parent,
const QString &iso,
Type type)
: RpWidget(parent)
, _type(type)
, _rowHeight(st::countryRowHeight) {
setAttribute(Qt::WA_OpaquePaintEvent);
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const auto &byISO2 = Countries::Instance().byISO2();
if (byISO2.contains(iso)) {
LastValidISO = iso;
}
rpl::single(
) | rpl::then(
Countries::Instance().updated()
) | rpl::start_with_next([=] {
_mustScrollTo.fire(ScrollToRequest(0, 0));
_list.clear();
_namesList.clear();
init();
const auto filter = _filter;
_filter = u"a"_q;
updateFilter(filter);
}, lifetime());
}
void CountrySelectBox::Inner::init() {
const auto &byISO2 = Countries::Instance().byISO2();
const auto extractEntries = [&](const Countries::Info &info) {
for (const auto &code : info.codes) {
_list.push_back(Entry{
.country = info.name,
.iso2 = info.iso2,
.code = code.callingCode,
.alternativeName = info.alternativeName,
});
}
};
_list.reserve(byISO2.size());
_namesList.reserve(byISO2.size());
const auto l = byISO2.constFind(LastValidISO);
const auto lastValid = (l != byISO2.cend()) ? (*l) : nullptr;
if (lastValid) {
extractEntries(*lastValid);
}
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for (const auto &entry : Countries::Instance().list()) {
if (&entry != lastValid) {
extractEntries(entry);
}
}
auto index = 0;
for (const auto &info : _list) {
auto full = info.country
+ ' '
+ (!info.alternativeName.isEmpty()
? info.alternativeName
: QString());
const auto namesList = std::move(full).toLower().split(
QRegularExpression("[\\s\\-]"),
Qt::SkipEmptyParts);
auto &names = _namesList.emplace_back();
names.reserve(namesList.size());
for (const auto &name : namesList) {
const auto part = name.trimmed();
if (part.isEmpty()) {
continue;
}
const auto ch = part[0];
auto &byLetter = _byLetter[ch];
if (byLetter.empty() || byLetter.back() != index) {
byLetter.push_back(index);
}
names.push_back(part);
}
++index;
}
}
void CountrySelectBox::Inner::paintEvent(QPaintEvent *e) {
Painter p(this);
QRect r(e->rect());
p.setClipRect(r);
const auto &list = current();
if (list.empty()) {
p.fillRect(r, st::boxBg);
p.setFont(st::noContactsFont);
p.setPen(st::noContactsColor);
p.drawText(QRect(0, 0, width(), st::noContactsHeight), tr::lng_country_none(tr::now), style::al_center);
return;
}
const auto l = int(list.size());
if (r.intersects(QRect(0, 0, width(), st::countriesSkip))) {
p.fillRect(r.intersected(QRect(0, 0, width(), st::countriesSkip)), st::countryRowBg);
}
int32 from = std::clamp((r.y() - st::countriesSkip) / _rowHeight, 0, l);
int32 to = std::clamp((r.y() + r.height() - st::countriesSkip + _rowHeight - 1) / _rowHeight, 0, l);
for (int32 i = from; i < to; ++i) {
auto selected = (i == (_pressed >= 0 ? _pressed : _selected));
auto y = st::countriesSkip + i * _rowHeight;
p.fillRect(0, y, width(), _rowHeight, selected ? st::countryRowBgOver : st::countryRowBg);
if (_ripples.size() > i && _ripples[i]) {
_ripples[i]->paint(p, 0, y, width());
if (_ripples[i]->empty()) {
_ripples[i].reset();
}
}
auto code = QString("+") + list[i].code;
auto codeWidth = st::countryRowCodeFont->width(code);
auto name = list[i].country;
auto nameWidth = st::countryRowNameFont->width(name);
auto availWidth = width() - st::countryRowPadding.left() - st::countryRowPadding.right() - codeWidth - st::boxScroll.width;
if (nameWidth > availWidth) {
name = st::countryRowNameFont->elided(name, availWidth);
nameWidth = st::countryRowNameFont->width(name);
}
p.setFont(st::countryRowNameFont);
p.setPen(st::countryRowNameFg);
p.drawTextLeft(st::countryRowPadding.left(), y + st::countryRowPadding.top(), width(), name);
if (_type == Type::Phones) {
p.setFont(st::countryRowCodeFont);
p.setPen(selected ? st::countryRowCodeFgOver : st::countryRowCodeFg);
p.drawTextLeft(st::countryRowPadding.left() + nameWidth + st::countryRowPadding.right(), y + st::countryRowPadding.top(), width(), code);
}
}
}
void CountrySelectBox::Inner::enterEventHook(QEnterEvent *e) {
setMouseTracking(true);
}
void CountrySelectBox::Inner::leaveEventHook(QEvent *e) {
_mouseSelection = false;
setMouseTracking(false);
if (_selected >= 0) {
updateSelectedRow();
_selected = -1;
}
}
void CountrySelectBox::Inner::mouseMoveEvent(QMouseEvent *e) {
_mouseSelection = true;
updateSelected(e->pos());
}
void CountrySelectBox::Inner::mousePressEvent(QMouseEvent *e) {
_mouseSelection = true;
updateSelected(e->pos());
setPressed(_selected);
const auto &list = current();
if (_pressed >= 0 && _pressed < list.size()) {
if (_ripples.size() <= _pressed) {
_ripples.reserve(_pressed + 1);
while (_ripples.size() <= _pressed) {
_ripples.push_back(nullptr);
}
}
if (!_ripples[_pressed]) {
auto mask = RippleAnimation::rectMask(QSize(width(), _rowHeight));
_ripples[_pressed] = std::make_unique<RippleAnimation>(st::countryRipple, std::move(mask), [this, index = _pressed] {
updateRow(index);
});
_ripples[_pressed]->add(e->pos() - QPoint(0, st::countriesSkip + _pressed * _rowHeight));
}
}
}
void CountrySelectBox::Inner::mouseReleaseEvent(QMouseEvent *e) {
auto pressed = _pressed;
setPressed(-1);
updateSelectedRow();
if (e->button() == Qt::LeftButton) {
if ((pressed >= 0) && pressed == _selected) {
chooseCountry();
}
}
}
void CountrySelectBox::Inner::updateFilter(QString filter) {
const auto words = TextUtilities::PrepareSearchWords(filter);
filter = words.isEmpty() ? QString() : words.join(' ');
if (_filter == filter) {
return;
}
_filter = filter;
const auto findWord = [&](
const std::vector<QString> &names,
const QString &word) {
for (const auto &name : names) {
if (name.startsWith(word)) {
return true;
}
}
return false;
};
const auto hasAllWords = [&](const std::vector<QString> &names) {
for (const auto &word : words) {
if (!findWord(names, word)) {
return false;
}
}
return true;
};
if (!_filter.isEmpty()) {
_filtered.clear();
for (const auto index : _byLetter[_filter[0].toLower()]) {
if (hasAllWords(_namesList[index])) {
_filtered.push_back(_list[index]);
}
}
}
refresh();
_selected = current().empty() ? -1 : 0;
update();
}
void CountrySelectBox::Inner::selectSkip(int32 dir) {
_mouseSelection = false;
const auto &list = current();
int cur = (_selected >= 0) ? _selected : -1;
cur += dir;
if (cur <= 0) {
_selected = list.empty() ? -1 : 0;
} else if (cur >= list.size()) {
_selected = -1;
} else {
_selected = cur;
}
if (_selected >= 0) {
_mustScrollTo.fire(ScrollToRequest(
st::countriesSkip + _selected * _rowHeight,
st::countriesSkip + (_selected + 1) * _rowHeight));
}
update();
}
void CountrySelectBox::Inner::selectSkipPage(int32 h, int32 dir) {
int32 points = h / _rowHeight;
if (!points) return;
selectSkip(points * dir);
}
void CountrySelectBox::Inner::chooseCountry() {
const auto &list = current();
_countryChosen.fire_copy((_selected >= 0 && _selected < list.size())
? list[_selected]
: Entry());
}
void CountrySelectBox::Inner::refresh() {
const auto &list = current();
resize(width(), list.empty() ? st::noContactsHeight : (list.size() * _rowHeight + st::countriesSkip));
}
void CountrySelectBox::Inner::updateSelected(QPoint localPos) {
if (!_mouseSelection) return;
auto in = parentWidget()->rect().contains(parentWidget()->mapFromGlobal(QCursor::pos()));
const auto &list = current();
auto selected = (in && localPos.y() >= st::countriesSkip && localPos.y() < st::countriesSkip + list.size() * _rowHeight) ? ((localPos.y() - st::countriesSkip) / _rowHeight) : -1;
if (_selected != selected) {
updateSelectedRow();
_selected = selected;
updateSelectedRow();
}
}
auto CountrySelectBox::Inner::current() const
-> const std::vector<CountrySelectBox::Entry> & {
return _filter.isEmpty() ? _list : _filtered;
}
void CountrySelectBox::Inner::updateSelectedRow() {
updateRow(_selected);
}
void CountrySelectBox::Inner::updateRow(int index) {
if (index >= 0) {
update(0, st::countriesSkip + index * _rowHeight, width(), _rowHeight);
}
}
void CountrySelectBox::Inner::setPressed(int pressed) {
if (_pressed >= 0 && _pressed < _ripples.size() && _ripples[_pressed]) {
_ripples[_pressed]->lastStop();
}
_pressed = pressed;
}
CountrySelectBox::Inner::~Inner() = default;
} // namespace Ui