tdesktop/Telegram/SourceFiles/boxes/language_box.cpp at dev · dmitry/tdesktop · GitHub

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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 "boxes/language_box.h"

#include "base/platform/base_platform_info.h"

#include "boxes/abstract_box.h"

#include "boxes/premium_preview_box.h"

#include "boxes/translate_box.h"

#include "core/application.h"

#include "data/data_peer_values.h"

#include "lang/lang_cloud_manager.h"

#include "lang/lang_instance.h"

#include "lang/lang_keys.h"

#include "main/main_session.h"

#include "platform/platform_translate_provider.h"

#include "settings/settings_common.h"

#include "spellcheck/spellcheck_types.h"

#include "storage/localstorage.h"

#include "ui/accessible/ui_accessible_item.h"

#include "ui/boxes/choose_language_box.h"

#include "ui/boxes/confirm_box.h"

#include "ui/effects/ripple_animation.h"

#include "ui/text/text_entity.h"

#include "ui/text/text_options.h"

#include "ui/toast/toast.h"

#include "ui/widgets/box_content_divider.h"

#include "ui/widgets/buttons.h"

#include "ui/widgets/checkbox.h"

#include "ui/widgets/dropdown_menu.h"

#include "ui/widgets/labels.h"

#include "ui/widgets/multi_select.h"

#include "ui/widgets/scroll_area.h"

#include "ui/wrap/slide_wrap.h"

#include "ui/wrap/vertical_layout.h"

#include "ui/painter.h"

#include "ui/screen_reader_mode.h"

#include "ui/ui_utility.h"

#include "ui/vertical_list.h"

#include "window/window_controller.h"

#include "window/window_session_controller.h"

#include "mainwidget.h"

#include "mainwindow.h"

#include "styles/style_boxes.h"

#include "styles/style_chat_helpers.h"

#include "styles/style_info.h"

#include "styles/style_layers.h"

#include "styles/style_menu_icons.h"

#include "styles/style_passport.h"

#include "styles/style_settings.h"

#include <QtGui/QClipboard>

#include <QtGui/QGuiApplication>

namespace {

using Language = Lang::Language;

using Languages = Lang::CloudManager::Languages;

class Rows : public Ui::RpWidget {

public:

Rows(

QWidget *parent,

const Languages &data,

const QString &chosen,

bool areOfficial);

void filter(const QString &query);

int count() const;

int selected() const;

int chosenIndex() const;

void setSelected(int selected);

rpl::producer<bool> hasSelection() const;

rpl::producer<bool> isEmpty() const;

void activateSelected();

void selectSkip(int dir);

rpl::producer<Language> activations() const;

void changeChosen(const QString &chosen);

Ui::ScrollToRequest rowScrollRequest(int index) const;

static int DefaultRowHeight();

QAccessible::Role accessibilityRole() override;

Qt::FocusPolicy accessibilityFocusPolicy() override;

QAccessible::Role accessibilityChildRole() const override;

QAccessible::State accessibilityChildState(int index) const override;

int accessibilityChildCount() const override;

QString accessibilityChildName(int index) const override;

QRect accessibilityChildRect(int index) const override;

int accessibilityChildColumnCount(int row) const override;

QAccessible::Role accessibilityChildSubItemRole() const override;

QString accessibilityChildSubItemName(int row, int column) const override;

QString accessibilityChildSubItemValue(int row, int column) const override;

protected:

int resizeGetHeight(int newWidth) override;

void focusInEvent(QFocusEvent *e) override;

void paintEvent(QPaintEvent *e) override;

void keyPressEvent(QKeyEvent *e) override;

void mouseMoveEvent(QMouseEvent *e) override;

void mousePressEvent(QMouseEvent *e) override;

void mouseReleaseEvent(QMouseEvent *e) override;

void leaveEventHook(QEvent *e) override;

private:

struct Row {

Language data;

Ui::Text::String title = { st::boxWideWidth / 2 };

Ui::Text::String description = { st::boxWideWidth / 2 };

int top = 0;

int height = 0;

mutable std::unique_ptr<Ui::RippleAnimation> ripple;

mutable std::unique_ptr<Ui::RippleAnimation> menuToggleRipple;

bool menuToggleForceRippled = false;

int titleHeight = 0;

int descriptionHeight = 0;

QStringList keywords;

std::unique_ptr<Ui::RadioView> check;

bool removed = false;

};

struct RowSelection {

int index = 0;

inline bool operator==(const RowSelection &other) const {

return (index == other.index);

}

};

struct MenuSelection {

int index = 0;

inline bool operator==(const MenuSelection &other) const {

return (index == other.index);

}

};

using Selection = std::variant<v::null_t, RowSelection, MenuSelection>;

void updateSelected(Selection selected);

void updatePressed(Selection pressed);

Rows::Row &rowByIndex(int index);

const Rows::Row &rowByIndex(int index) const;

Rows::Row &rowBySelection(Selection selected);

const Rows::Row &rowBySelection(Selection selected) const;

std::unique_ptr<Ui::RippleAnimation> &rippleBySelection(

Selection selected);

[[maybe_unused]] const std::unique_ptr<Ui::RippleAnimation> &rippleBySelection(

Selection selected) const;

std::unique_ptr<Ui::RippleAnimation> &rippleBySelection(

not_null<Row*> row,

Selection selected);

[[maybe_unused]] const std::unique_ptr<Ui::RippleAnimation> &rippleBySelection(

not_null<const Row*> row,

Selection selected) const;

void addRipple(Selection selected, QPoint position);

void ensureRippleBySelection(Selection selected);

void ensureRippleBySelection(not_null<Row*> row, Selection selected);

int indexFromSelection(Selection selected) const;

int countAvailableWidth() const;

int countAvailableWidth(int newWidth) const;

QRect menuToggleArea() const;

QRect menuToggleArea(not_null<const Row*> row) const;

void repaint(Selection selected);

void repaint(int index);

void repaint(const Row &row);

void repaintChecked(not_null<const Row*> row);

void activateByIndex(int index);

enum class Announce {

No,

OnChange,

Always,

};

void setSelected(int index, Announce announce);

void showMenu(int index);

void setForceRippled(not_null<Row*> row, bool rippled);

bool canShare(not_null<const Row*> row) const;

bool canRemove(not_null<const Row*> row) const;

bool hasMenu(not_null<const Row*> row) const;

void share(not_null<const Row*> row) const;

void remove(not_null<Row*> row);

void restore(not_null<Row*> row);

std::vector<Row> _rows;

std::vector<not_null<Row*>> _filtered;

Selection _selected;

Selection _pressed;

QString _chosen;

QStringList _query;

bool _areOfficial = false;

bool _mouseSelection = false;

QPoint _globalMousePosition;

base::unique_qptr<Ui::DropdownMenu> _menu;

int _menuShownIndex = -1;

bool _menuOtherEntered = false;

rpl::event_stream<bool> _hasSelection;

rpl::event_stream<Language> _activations;

rpl::event_stream<bool> _isEmpty;

};

[[nodiscard]] bool ForwardListNavigation(

not_null<QKeyEvent*> e,

not_null<Rows*> rows,

int pageHeight) {

const auto key = e->key();

if (key == Qt::Key_Down) {

rows->selectSkip(1);

} else if (key == Qt::Key_Up) {

rows->selectSkip(-1);

} else if (key == Qt::Key_PageDown || key == Qt::Key_PageUp) {

const auto perPage = std::max(

pageHeight / Rows::DefaultRowHeight(),

1);

rows->selectSkip((key == Qt::Key_PageDown) ? perPage : -perPage);

} else {

return false;

}

return true;

}

class Content : public Ui::RpWidget {

public:

Content(

QWidget *parent,

const Languages &recent,

const Languages &official);

Ui::ScrollToRequest jump(int rows);

void filter(const QString &query);

rpl::producer<Language> activations() const;

void changeChosen(const QString &chosen);

void activateBySubmit();

private:

void setupContent(

const Languages &recent,

const Languages &official);

Fn<Ui::ScrollToRequest(int rows)> _jump;

Fn<void(const QString &query)> _filter;

Fn<rpl::producer<Language>()> _activations;

Fn<void(const QString &chosen)> _changeChosen;

Fn<void()> _activateBySubmit;

};

std::pair<Languages, Languages> PrepareLists() {

const auto projId = [](const Language &language) {

return language.id;

};

const auto current = Lang::LanguageIdOrDefault(Lang::Id());

auto official = Lang::CurrentCloudManager().languageList();

auto recent = Local::readRecentLanguages();

ranges::stable_partition(recent, [&](const Language &language) {

return (language.id == current);

});

if (recent.empty() || recent.front().id != current) {

if (ranges::find(official, current, projId) == end(official)) {

const auto generate = [&] {

const auto name = (current == "#custom")

? "Custom lang pack"

: Lang::GetInstance().name();

return Language{

current,

QString(),

name,

Lang::GetInstance().nativeName()

};

recent.insert(begin(recent), generate());

}

auto i = begin(official), e = end(official);

const auto remover = [&](const Language &language) {

auto k = ranges::find(i, e, language.id, projId);

if (k == e) {

return false;

}

for (; k != i; --k) {

std::swap(*k, *(k - 1));

}

++i;

return true;

};

recent.erase(ranges::remove_if(recent, remover), end(recent));

return { std::move(recent), std::move(official) };

}

Rows::Rows(

QWidget *parent,

const Languages &data,

const QString &chosen,

bool areOfficial)

: RpWidget(parent)

, _chosen(chosen)

, _areOfficial(areOfficial) {

const auto descriptionOptions = TextParseOptions{

TextParseMultiline,

Qt::LayoutDirectionAuto

};

_rows.reserve(data.size());

for (const auto &item : data) {

_rows.push_back(Row{ item });

auto &row = _rows.back();

row.check = std::make_unique<Ui::RadioView>(

st::langsRadio,

(row.data.id == _chosen),

[=, row = &row] { repaint(*row); });

row.title.setText(

st::semiboldTextStyle,

item.nativeName,

Ui::NameTextOptions());

row.description.setText(

st::defaultTextStyle,

item.name,

descriptionOptions);

row.keywords = TextUtilities::PrepareSearchWords(

item.name + ' ' + item.nativeName);

}

resizeToWidth(width());

setAttribute(Qt::WA_MouseTracking);

update();

setAccessibleName(tr::lng_languages(tr::now));

}

void Rows::focusInEvent(QFocusEvent *e) {

if (selected() < 0 && count() > 0) {

const auto chosen = chosenIndex();

setSelected(chosen >= 0 ? chosen : 0, Announce::No);

}

RpWidget::focusInEvent(e);

const auto index = selected();

if (index >= 0) {

InvokeQueued(this, [=] {

if (selected() == index && hasFocus()) {

accessibilityChildFocused(index);

}

});

}

void Rows::keyPressEvent(QKeyEvent *e) {

const auto pageHeight = window() ? window()->height() : height();

if (ForwardListNavigation(e, this, pageHeight)) {

return;

}

const auto key = e->key();

if (key == Qt::Key_Home && count() > 0) {

setSelected(0, Announce::Always);

} else if (key == Qt::Key_End && count() > 0) {

setSelected(count() - 1, Announce::Always);

} else if (!e->isAutoRepeat()

&& (key == Qt::Key_Space

|| key == Qt::Key_Return

|| key == Qt::Key_Enter)) {

activateSelected();

} else {

RpWidget::keyPressEvent(e);

}

void Rows::mouseMoveEvent(QMouseEvent *e) {

const auto position = e->globalPos();

if (_menu) {

const auto rect = (_menuShownIndex >= 0)

? menuToggleArea(&rowByIndex(_menuShownIndex))

: QRect();

if (rect.contains(e->pos())) {

if (!_menuOtherEntered) {

_menuOtherEntered = true;

_menu->otherEnter();

}

} else {

if (_menuOtherEntered) {

_menuOtherEntered = false;

_menu->otherLeave();

}

if (!_mouseSelection && position == _globalMousePosition) {

return;

}

_mouseSelection = true;

_globalMousePosition = position;

const auto index = [&] {

const auto y = e->pos().y();

if (y < 0) {

return -1;

}

for (auto i = 0, till = count(); i != till; ++i) {

const auto &row = rowByIndex(i);

if (row.top + row.height > y) {

return i;

}

return -1;

}();

const auto row = (index >= 0) ? &rowByIndex(index) : nullptr;

const auto inMenuToggle = (index >= 0 && hasMenu(row))

? menuToggleArea(row).contains(e->pos())

: false;

if (index < 0) {

updateSelected({});

} else if (inMenuToggle) {

updateSelected(MenuSelection{ index });

} else if (!row->removed) {

updateSelected(RowSelection{ index });

} else {

updateSelected({});

}

void Rows::mousePressEvent(QMouseEvent *e) {

updatePressed(_selected);

if (!v::is_null(_pressed)

&& !rowBySelection(_pressed).menuToggleForceRippled) {

addRipple(_pressed, e->pos());

}

QRect Rows::menuToggleArea() const {

const auto size = st::topBarSearch.width;

const auto top = (DefaultRowHeight() - size) / 2;

const auto skip = st::boxScroll.width

- st::boxScroll.deltax

+ top;

const auto left = width() - skip - size;

return QRect(left, top, size, size);

}

QRect Rows::menuToggleArea(not_null<const Row*> row) const {

return menuToggleArea().translated(0, row->top);

}

void Rows::addRipple(Selection selected, QPoint position) {

Expects(!v::is_null(selected));

ensureRippleBySelection(selected);

const auto menu = v::is<MenuSelection>(selected);

const auto &row = rowBySelection(selected);

const auto menuArea = menuToggleArea(&row);

auto &ripple = rippleBySelection(&row, selected);

const auto topleft = menu ? menuArea.topLeft() : QPoint(0, row.top);

ripple->add(position - topleft);

}

void Rows::ensureRippleBySelection(Selection selected) {

ensureRippleBySelection(&rowBySelection(selected), selected);

}

void Rows::ensureRippleBySelection(not_null<Row*> row, Selection selected) {

auto &ripple = rippleBySelection(row, selected);

if (ripple) {

return;

}

const auto menu = v::is<MenuSelection>(selected);

const auto menuArea = menuToggleArea(row);

auto mask = menu

? Ui::RippleAnimation::EllipseMask(menuArea.size())

: Ui::RippleAnimation::RectMask({ width(), row->height });

ripple = std::make_unique<Ui::RippleAnimation>(

st::defaultRippleAnimation,

std::move(mask),

[=] { repaintChecked(row); });

}

void Rows::mouseReleaseEvent(QMouseEvent *e) {

if (_menu && e->button() == Qt::LeftButton) {

if (_menu->isHiding()) {

_menu->otherEnter();

} else {

_menu->otherLeave();

}

const auto pressed = _pressed;

updatePressed({});

if (pressed == _selected) {

v::match(pressed, [&](RowSelection data) {

activateByIndex(data.index);

}, [&](MenuSelection data) {

showMenu(data.index);

}, [](v::null_t) {});

}

bool Rows::canShare(not_null<const Row*> row) const {

return !_areOfficial && !row->data.id.startsWith('#');

}

bool Rows::canRemove(not_null<const Row*> row) const {

return !_areOfficial && !row->check->checked();

}

bool Rows::hasMenu(not_null<const Row*> row) const {

return canShare(row) || canRemove(row);

}

void Rows::share(not_null<const Row*> row) const {

const auto link = u"https://t.me/setlanguage/"_q + row->data.id;

QGuiApplication::clipboard()->setText(link);

Ui::Toast::Show(tr::lng_username_copied(tr::now));

}

void Rows::remove(not_null<Row*> row) {

row->removed = true;

Local::removeRecentLanguage(row->data.id);

}

void Rows::restore(not_null<Row*> row) {

row->removed = false;

Local::saveRecentLanguages(ranges::views::all(

_rows

) | ranges::views::filter([](const Row &row) {

return !row.removed;

}) | ranges::views::transform([](const Row &row) {

return row.data;

}) | ranges::to_vector);

}

void Rows::showMenu(int index) {

const auto row = &rowByIndex(index);

if (_menu || !hasMenu(row)) {

return;

}

_menu = base::make_unique_q<Ui::DropdownMenu>(

window(),

st::dropdownMenuWithIcons);

const auto weak = _menu.get();

_menu->setHiddenCallback([=] {

weak->deleteLater();

if (_menu == weak) {

setForceRippled(row, false);

_menuShownIndex = -1;

}

});

_menu->setShowStartCallback([=] {

if (_menu == weak) {

setForceRippled(row, true);

_menuShownIndex = index;

}

});

_menu->setHideStartCallback([=] {

if (_menu == weak) {

setForceRippled(row, false);

_menuShownIndex = -1;

}

});

const auto addAction = [&](

const QString &text,

Fn<void()> callback,

const style::icon *icon) {

return _menu->addAction(text, std::move(callback), icon);

};

if (canShare(row)) {

addAction(

tr::lng_proxy_edit_share(tr::now),

[=] { share(row); },

&st::menuIconShare);

}

if (canRemove(row)) {

if (row->removed) {

addAction(tr::lng_proxy_menu_restore(tr::now), [=] {

restore(row);

}, &st::menuIconRestore);

} else {

addAction(tr::lng_proxy_menu_delete(tr::now), [=] {

remove(row);

}, &st::menuIconDelete);

}

const auto toggle = menuToggleArea(row);

const auto parentTopLeft = window()->mapToGlobal(QPoint());

const auto buttonTopLeft = mapToGlobal(toggle.topLeft());

const auto parent = QRect(parentTopLeft, window()->size());

const auto button = QRect(buttonTopLeft, toggle.size());

const auto bottom = button.y()

+ st::proxyDropdownDownPosition.y()

+ _menu->height()

- parent.y();

const auto top = button.y()

+ st::proxyDropdownUpPosition.y()

- _menu->height()

- parent.y();

_menuShownIndex = index;

_menuOtherEntered = true;

if (bottom > parent.height() && top >= 0) {

const auto left = button.x()

+ button.width()

+ st::proxyDropdownUpPosition.x()

- _menu->width()

- parent.x();

_menu->move(left, top);

_menu->showAnimated(Ui::PanelAnimation::Origin::BottomRight);

} else {

const auto left = button.x()

+ button.width()

+ st::proxyDropdownDownPosition.x()

- _menu->width()

- parent.x();

_menu->move(left, bottom - _menu->height());

_menu->showAnimated(Ui::PanelAnimation::Origin::TopRight);

}

void Rows::setForceRippled(not_null<Row*> row, bool rippled) {

if (row->menuToggleForceRippled != rippled) {

row->menuToggleForceRippled = rippled;

auto &ripple = rippleBySelection(row, MenuSelection{});

if (row->menuToggleForceRippled) {

ensureRippleBySelection(row, MenuSelection{});

if (ripple->empty()) {

ripple->addFading();

} else {

ripple->lastUnstop();

}

} else {

if (ripple) {

ripple->lastStop();

}

repaint(*row);

}

void Rows::activateByIndex(int index) {

_chosen = rowByIndex(index).data.id;

_activations.fire_copy(rowByIndex(index).data);

accessibilityChildStateChanged(index, { .checked = true });

accessibilityChildNameChanged(index);

}

void Rows::leaveEventHook(QEvent *e) {

updateSelected({});

if (_menu && _menuOtherEntered) {

_menuOtherEntered = false;

_menu->otherLeave();

}

void Rows::filter(const QString &query) {

updateSelected({});

updatePressed({});

_menu = nullptr;

_menuShownIndex = -1;

_query = TextUtilities::PrepareSearchWords(query);

const auto skip = [](

const QStringList &haystack,

const QStringList &needles) {

const auto find = [](

const QStringList &haystack,

const QString &needle) {

for (const auto &item : haystack) {

if (item.startsWith(needle)) {

return true;

}

return false;

};

for (const auto &needle : needles) {

if (!find(haystack, needle)) {

return true;

}

return false;

};

if (!_query.isEmpty()) {

_filtered.clear();

_filtered.reserve(_rows.size());

for (auto &row : _rows) {

if (!skip(row.keywords, _query)) {

_filtered.push_back(&row);

} else {

row.ripple = nullptr;

}

resizeToWidth(width());

Ui::SendPendingMoveResizeEvents(this);

_isEmpty.fire(count() == 0);

}

int Rows::count() const {

return _query.isEmpty() ? _rows.size() : _filtered.size();

}

int Rows::indexFromSelection(Selection selected) const {

return v::match(selected, [&](RowSelection data) {

return data.index;

}, [&](MenuSelection data) {

return data.index;

}, [](v::null_t) {

return -1;

});

}

int Rows::selected() const {

return indexFromSelection(_selected);

}

int Rows::chosenIndex() const {

for (auto i = 0, n = count(); i < n; ++i) {

if (rowByIndex(i).data.id == _chosen) {

return i;

}

return -1;

}

void Rows::activateSelected() {

const auto index = selected();

if (index >= 0) {

activateByIndex(index);

}

void Rows::selectSkip(int dir) {

const auto limit = count();

auto now = selected();

if (now < 0) {

now = chosenIndex();

}

if (now >= 0) {

const auto changed = now + dir;

if (changed < 0) {

setSelected(0, Announce::Always);

} else if (changed >= limit) {

setSelected(limit - 1, Announce::Always);

} else {

setSelected(changed, Announce::Always);

}

} else if (dir > 0) {

setSelected(0, Announce::Always);

}

rpl::producer<Language> Rows::activations() const {

return _activations.events();

}

void Rows::changeChosen(const QString &chosen) {

const auto oldIndex = chosenIndex();

_chosen = chosen;

for (const auto &row : _rows) {

row.check->setChecked(row.data.id == chosen, anim::type::normal);

}

const auto newIndex = chosenIndex();

if (newIndex != oldIndex && newIndex >= 0) {

accessibilityChildStateChanged(newIndex, { .checked = true });

accessibilityChildNameChanged(newIndex);

}

void Rows::setSelected(int selected) {

setSelected(selected, Announce::OnChange);

}

void Rows::setSelected(int selected, Announce announce) {

_mouseSelection = false;

const auto limit = count();

const auto clamped = (selected >= 0 && selected < limit)

? selected

: -1;

const auto changed = (indexFromSelection(_selected) != clamped)

|| (clamped < 0 && !v::is_null(_selected));

if (clamped >= 0) {

updateSelected(RowSelection{ clamped });

} else {

updateSelected({});

}

const auto shouldAnnounce = (announce == Announce::Always)

|| (announce == Announce::OnChange && changed);

if (shouldAnnounce && clamped >= 0) {

accessibilityChildNameChanged(clamped);

accessibilityChildFocused(clamped);

}

rpl::producer<bool> Rows::hasSelection() const {

return _hasSelection.events();

}

rpl::producer<bool> Rows::isEmpty() const {

return _isEmpty.events_starting_with(

count() == 0

) | rpl::distinct_until_changed();

}

void Rows::repaint(Selection selected) {

v::match(selected, [](v::null_t) {

}, [&](const auto &data) {

repaint(data.index);

});

}

void Rows::repaint(int index) {

if (index >= 0) {

repaint(rowByIndex(index));

}

void Rows::repaint(const Row &row) {

update(0, row.top, width(), row.height);

}

void Rows::repaintChecked(not_null<const Row*> row) {

const auto found = (ranges::find(_filtered, row) != end(_filtered));

if (_query.isEmpty() || found) {

repaint(*row);

}

void Rows::updateSelected(Selection selected) {

const auto changed = (v::is_null(_selected) != v::is_null(selected));

repaint(_selected);

_selected = selected;

repaint(_selected);

if (changed) {

_hasSelection.fire(!v::is_null(_selected));

}

void Rows::updatePressed(Selection pressed) {

if (!v::is_null(_pressed)) {

if (!rowBySelection(_pressed).menuToggleForceRippled) {

if (const auto ripple = rippleBySelection(_pressed).get()) {

ripple->lastStop();

}

_pressed = pressed;

}

Rows::Row &Rows::rowByIndex(int index) {

Expects(index >= 0 && index < count());

return _query.isEmpty() ? _rows[index] : *_filtered[index];

}

const Rows::Row &Rows::rowByIndex(int index) const {

Expects(index >= 0 && index < count());

return _query.isEmpty() ? _rows[index] : *_filtered[index];

}

Rows::Row &Rows::rowBySelection(Selection selected) {

return rowByIndex(indexFromSelection(selected));

}

const Rows::Row &Rows::rowBySelection(Selection selected) const {

return rowByIndex(indexFromSelection(selected));

}

std::unique_ptr<Ui::RippleAnimation> &Rows::rippleBySelection(

Selection selected) {

return rippleBySelection(&rowBySelection(selected), selected);

}

const std::unique_ptr<Ui::RippleAnimation> &Rows::rippleBySelection(

Selection selected) const {

return rippleBySelection(&rowBySelection(selected), selected);

}

std::unique_ptr<Ui::RippleAnimation> &Rows::rippleBySelection(

not_null<Row*> row,

Selection selected) {

return v::is<MenuSelection>(selected)

? row->menuToggleRipple

: row->ripple;

}

const std::unique_ptr<Ui::RippleAnimation> &Rows::rippleBySelection(

not_null<const Row*> row,

Selection selected) const {

return const_cast<Rows*>(this)->rippleBySelection(

const_cast<Row*>(row.get()),

selected);

}

Ui::ScrollToRequest Rows::rowScrollRequest(int index) const {

const auto &row = rowByIndex(index);

return Ui::ScrollToRequest(row.top, row.top + row.height);

}

int Rows::DefaultRowHeight() {

return st::passportRowPadding.top()

+ st::semiboldFont->height

+ st::passportRowSkip

+ st::normalFont->height

+ st::passportRowPadding.bottom();

}

int Rows::resizeGetHeight(int newWidth) {

const auto availableWidth = countAvailableWidth(newWidth);

auto result = 0;

for (auto i = 0, till = count(); i != till; ++i) {

auto &row = rowByIndex(i);

row.top = result;

row.titleHeight = row.title.countHeight(availableWidth);

row.descriptionHeight = row.description.countHeight(availableWidth);

row.height = st::passportRowPadding.top()

+ row.titleHeight

+ st::passportRowSkip

+ row.descriptionHeight

+ st::passportRowPadding.bottom();

result += row.height;

}

return result;

}

int Rows::countAvailableWidth(int newWidth) const {

const auto right = width() - menuToggleArea().x();

return newWidth

- st::passportRowPadding.left()

- st::langsRadio.diameter

- st::passportRowPadding.left()

- right

- st::passportRowIconSkip;

}

int Rows::countAvailableWidth() const {

return countAvailableWidth(width());

}

void Rows::paintEvent(QPaintEvent *e) {

Painter p(this);

const auto clip = e->rect();

const auto checkLeft = st::passportRowPadding.left();

const auto left = checkLeft

+ st::langsRadio.diameter

+ st::passportRowPadding.left();

const auto availableWidth = countAvailableWidth();

const auto menu = menuToggleArea();

const auto selectedIndex = (_menuShownIndex >= 0)

? _menuShownIndex

: indexFromSelection(!v::is_null(_pressed) ? _pressed : _selected);

for (auto i = 0, till = count(); i != till; ++i) {

const auto &row = rowByIndex(i);

if (row.top + row.height <= clip.y()) {

continue;

} else if (row.top >= clip.y() + clip.height()) {

break;

}

p.setOpacity(row.removed ? st::stickersRowDisabledOpacity : 1.);

p.translate(0, row.top);

const auto guard = gsl::finally([&] { p.translate(0, -row.top); });

const auto selected = (selectedIndex == i);

if (selected && !row.removed) {

p.fillRect(0, 0, width(), row.height, st::windowBgOver);

}

if (row.ripple) {

row.ripple->paint(p, 0, 0, width());

if (row.ripple->empty()) {

row.ripple.reset();

}

const auto checkTop = (row.height - st::defaultRadio.diameter) / 2;

row.check->paint(p, checkLeft, checkTop, width());

auto top = st::passportRowPadding.top();

p.setPen(st::passportRowTitleFg);

row.title.drawLeft(p, left, top, availableWidth, width());

top += row.titleHeight + st::passportRowSkip;

p.setPen(selected ? st::windowSubTextFgOver : st::windowSubTextFg);

row.description.drawLeft(p, left, top, availableWidth, width());

top += row.descriptionHeight + st::passportRowPadding.bottom();

if (hasMenu(&row)) {

p.setOpacity(1.);

if (selected && row.removed) {

PainterHighQualityEnabler hq(p);

p.setPen(Qt::NoPen);

p.setBrush(st::windowBgOver);

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tdesktop/Telegram/SourceFiles/boxes/language_box.cpp at dev · dmitry/tdesktop · GitHub

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