tdesktop/Telegram/SourceFiles/chat_helpers/emoji_suggestions_widget.cpp

627 lines
17 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 "chat_helpers/emoji_suggestions_widget.h"
#include "chat_helpers/emoji_suggestions_helper.h"
#include "ui/effects/ripple_animation.h"
#include "ui/widgets/shadow.h"
#include "ui/widgets/inner_dropdown.h"
#include "ui/emoji_config.h"
#include "platform/platform_specific.h"
#include "styles/style_chat_helpers.h"
namespace Ui {
namespace Emoji {
namespace {
constexpr auto kRowLimit = 5;
} // namespace
class SuggestionsWidget::Row {
public:
Row(not_null<EmojiPtr> emoji, const QString &label, const QString &replacement);
Row(const Row &other) = delete;
Row &operator=(const Row &other) = delete;
Row(Row &&other) = default;
Row &operator=(Row &&other) = default;
~Row();
not_null<EmojiPtr> emoji() const {
return _emoji;
}
const QString &label() const {
return _label;
}
const QString &replacement() const {
return _replacement;
}
RippleAnimation *ripple() const {
return _ripple.get();
}
void setRipple(std::unique_ptr<RippleAnimation> ripple) {
_ripple = std::move(ripple);
}
void resetRipple() {
_ripple.reset();
}
private:
not_null<EmojiPtr> _emoji;
QString _label;
QString _replacement;
std::unique_ptr<RippleAnimation> _ripple;
};
SuggestionsWidget::Row::Row(not_null<EmojiPtr> emoji, const QString &label, const QString &replacement)
: _emoji(emoji)
, _label(label)
, _replacement(replacement) {
}
SuggestionsWidget::Row::~Row() = default;
SuggestionsWidget::SuggestionsWidget(QWidget *parent, const style::Menu &st) : TWidget(parent)
, _st(&st)
, _rowHeight(_st->itemPadding.top() + _st->itemFont->height + _st->itemPadding.bottom()) {
setMouseTracking(true);
}
void SuggestionsWidget::showWithQuery(const QString &query) {
if (_query == query) {
return;
}
_query = query;
auto rows = getRowsByQuery();
if (rows.empty()) {
toggleAnimated.notify(false, true);
}
clearSelection();
_rows = std::move(rows);
resizeToRows();
update();
if (!_rows.empty()) {
setSelected(0);
}
if (!_rows.empty()) {
toggleAnimated.notify(true, true);
}
}
std::vector<SuggestionsWidget::Row> SuggestionsWidget::getRowsByQuery() const {
auto result = std::vector<Row>();
if (_query.isEmpty()) {
return result;
}
auto suggestions = GetSuggestions(QStringToUTF16(_query));
if (suggestions.empty()) {
return result;
}
auto count = suggestions.size();
auto suggestionsEmoji = std::vector<EmojiPtr>(count, nullptr);
for (auto i = 0; i != count; ++i) {
suggestionsEmoji[i] = Find(QStringFromUTF16(suggestions[i].emoji()));
}
auto recents = 0;
auto &recent = GetRecent();
for (auto &item : recent) {
auto emoji = item.first->original();
if (!emoji) emoji = item.first;
auto it = std::find(suggestionsEmoji.begin(), suggestionsEmoji.end(), emoji);
if (it != suggestionsEmoji.end()) {
auto index = (it - suggestionsEmoji.begin());
if (index >= recents) {
if (index > recents) {
auto recentEmoji = suggestionsEmoji[index];
auto recentSuggestion = suggestions[index];
for (auto i = index; i != recents; --i) {
suggestionsEmoji[i] = suggestionsEmoji[i - 1];
suggestions[i] = suggestions[i - 1];
}
suggestionsEmoji[recents] = recentEmoji;
suggestions[recents] = recentSuggestion;
}
++recents;
}
}
}
result.reserve(kRowLimit);
auto index = 0;
for (auto &item : suggestions) {
if (auto emoji = suggestionsEmoji[index++]) {
if (emoji->hasVariants()) {
auto it = cEmojiVariants().constFind(emoji->nonColoredId());
if (it != cEmojiVariants().cend()) {
emoji = emoji->variant(it.value());
}
}
result.emplace_back(emoji, QStringFromUTF16(item.label()), QStringFromUTF16(item.replacement()));
if (result.size() == kRowLimit) {
break;
}
}
}
return result;
}
void SuggestionsWidget::resizeToRows() {
auto newWidth = 0;
for (auto &row : _rows) {
accumulate_max(newWidth, countWidth(row));
}
newWidth = snap(newWidth, _st->widthMin, _st->widthMax);
auto newHeight = _st->skip + (_rows.size() * _rowHeight) + _st->skip;
resize(newWidth, newHeight);
}
int SuggestionsWidget::countWidth(const Row &row) {
auto textw = _st->itemFont->width(row.label());
return _st->itemPadding.left() + textw + _st->itemPadding.right();
}
void SuggestionsWidget::paintEvent(QPaintEvent *e) {
Painter p(this);
auto ms = getms();
auto clip = e->rect();
auto topskip = QRect(0, 0, width(), _st->skip);
auto bottomskip = QRect(0, height() - _st->skip, width(), _st->skip);
if (clip.intersects(topskip)) p.fillRect(clip.intersected(topskip), _st->itemBg);
if (clip.intersects(bottomskip)) p.fillRect(clip.intersected(bottomskip), _st->itemBg);
const auto top = _st->skip;
p.setFont(_st->itemFont);
const auto from = floorclamp(clip.top() - top, _rowHeight, 0, _rows.size());
const auto to = ceilclamp(clip.top() + clip.height() - top, _rowHeight, 0, _rows.size());
p.translate(0, top + from * _rowHeight);
for (auto i = from; i != to; ++i) {
auto &row = _rows[i];
const auto selected = (i == _selected || i == _pressed);
p.fillRect(0, 0, width(), _rowHeight, selected ? _st->itemBgOver : _st->itemBg);
if (const auto ripple = row.ripple()) {
ripple->paint(p, 0, 0, width(), ms);
if (ripple->empty()) {
row.resetRipple();
}
}
const auto emoji = row.emoji();
const auto esize = Ui::Emoji::GetSizeLarge();
Ui::Emoji::Draw(
p,
emoji,
esize,
(_st->itemPadding.left() - (esize / cIntRetinaFactor())) / 2,
(_rowHeight - (esize / cIntRetinaFactor())) / 2);
p.setPen(selected ? _st->itemFgOver : _st->itemFg);
p.drawTextLeft(_st->itemPadding.left(), _st->itemPadding.top(), width(), row.label());
p.translate(0, _rowHeight);
}
}
void SuggestionsWidget::keyPressEvent(QKeyEvent *e) {
handleKeyEvent(e->key());
}
void SuggestionsWidget::handleKeyEvent(int key) {
if (key == Qt::Key_Enter || key == Qt::Key_Return || key == Qt::Key_Tab) {
triggerSelectedRow();
return;
}
if ((key != Qt::Key_Up && key != Qt::Key_Down) || _rows.size() < 1) {
return;
}
auto delta = (key == Qt::Key_Down ? 1 : -1), start = _selected;
if (start < 0 || start >= _rows.size()) {
start = (delta > 0) ? (_rows.size() - 1) : 0;
}
auto newSelected = start + delta;
if (newSelected < 0) {
newSelected += _rows.size();
} else if (newSelected >= _rows.size()) {
newSelected -= _rows.size();
}
_mouseSelection = false;
setSelected(newSelected);
}
void SuggestionsWidget::setSelected(int selected) {
if (selected >= _rows.size()) {
selected = -1;
}
if (_selected != selected) {
updateSelectedItem();
_selected = selected;
updateSelectedItem();
}
}
void SuggestionsWidget::setPressed(int pressed) {
if (pressed >= _rows.size()) {
pressed = -1;
}
if (_pressed != pressed) {
_pressed = pressed;
}
}
void SuggestionsWidget::clearMouseSelection() {
if (_mouseSelection) {
clearSelection();
}
}
void SuggestionsWidget::clearSelection() {
_mouseSelection = false;
setSelected(-1);
}
int SuggestionsWidget::itemTop(int index) {
if (index > _rows.size()) {
index = _rows.size();
}
return _st->skip + (_rowHeight * index);
}
void SuggestionsWidget::updateItem(int index) {
if (index >= 0 && index < _rows.size()) {
update(0, itemTop(index), width(), _rowHeight);
}
}
void SuggestionsWidget::updateSelectedItem() {
updateItem(_selected);
}
void SuggestionsWidget::mouseMoveEvent(QMouseEvent *e) {
auto inner = rect().marginsRemoved(QMargins(0, _st->skip, 0, _st->skip));
auto localPosition = e->pos();
if (inner.contains(localPosition)) {
_mouseSelection = true;
updateSelection(e->globalPos());
} else {
clearMouseSelection();
}
}
void SuggestionsWidget::updateSelection(QPoint globalPosition) {
if (!_mouseSelection) return;
auto p = mapFromGlobal(globalPosition) - QPoint(0, _st->skip);
auto selected = (p.y() >= 0) ? (p.y() / _rowHeight) : -1;
setSelected((selected >= 0 && selected < _rows.size()) ? selected : -1);
}
void SuggestionsWidget::mousePressEvent(QMouseEvent *e) {
if (!_mouseSelection) {
return;
}
if (_selected >= 0 && _selected < _rows.size()) {
setPressed(_selected);
if (!_rows[_pressed].ripple()) {
auto mask = RippleAnimation::rectMask(QSize(width(), _rowHeight));
_rows[_pressed].setRipple(std::make_unique<RippleAnimation>(_st->ripple, std::move(mask), [this, selected = _pressed] {
updateItem(selected);
}));
}
_rows[_pressed].ripple()->add(mapFromGlobal(QCursor::pos()) - QPoint(0, itemTop(_pressed)));
}
}
void SuggestionsWidget::mouseReleaseEvent(QMouseEvent *e) {
if (_pressed >= 0 && _pressed < _rows.size()) {
auto pressed = _pressed;
setPressed(-1);
if (_rows[pressed].ripple()) {
_rows[pressed].ripple()->lastStop();
}
if (pressed == _selected) {
triggerRow(_rows[_selected]);
}
}
}
void SuggestionsWidget::triggerSelectedRow() {
if (_selected >= 0 && _selected < _rows.size()) {
triggerRow(_rows[_selected]);
}
}
void SuggestionsWidget::triggerRow(const Row &row) {
triggered.notify(row.emoji()->text(), true);
}
void SuggestionsWidget::enterEventHook(QEvent *e) {
auto mouse = QCursor::pos();
if (!rect().marginsRemoved(QMargins(0, _st->skip, 0, _st->skip)).contains(mapFromGlobal(mouse))) {
clearMouseSelection();
}
return TWidget::enterEventHook(e);
}
void SuggestionsWidget::leaveEventHook(QEvent *e) {
clearMouseSelection();
return TWidget::leaveEventHook(e);
}
SuggestionsController::SuggestionsController(QWidget *parent, not_null<QTextEdit*> field)
: QObject(nullptr)
, _field(field)
, _container(parent, st::emojiSuggestionsDropdown)
, _suggestions(_container->setOwnedWidget(object_ptr<Ui::Emoji::SuggestionsWidget>(parent, st::emojiSuggestionsMenu))) {
_container->setAutoHiding(false);
setReplaceCallback(nullptr);
_field->installEventFilter(this);
connect(_field, &QTextEdit::textChanged, this, [this] { handleTextChange(); });
connect(_field, &QTextEdit::cursorPositionChanged, this, [this] { handleCursorPositionChange(); });
subscribe(_suggestions->toggleAnimated, [this](bool visible) { suggestionsUpdated(visible); });
subscribe(_suggestions->triggered, [this](QString replacement) { replaceCurrent(replacement); });
updateForceHidden();
handleTextChange();
}
void SuggestionsController::setReplaceCallback(
Fn<void(
int from,
int till,
const QString &replacement)> callback) {
if (callback) {
_replaceCallback = std::move(callback);
} else {
_replaceCallback = [=](int from, int till, const QString &replacement) {
auto cursor = _field->textCursor();
cursor.setPosition(from);
cursor.setPosition(till, QTextCursor::KeepAnchor);
cursor.insertText(replacement);
};
}
}
void SuggestionsController::handleTextChange() {
_ignoreCursorPositionChange = true;
InvokeQueued(this, [this] { _ignoreCursorPositionChange = false; });
auto query = getEmojiQuery();
if (query.isEmpty() || _textChangeAfterKeyPress) {
_suggestions->showWithQuery(query);
}
}
QString SuggestionsController::getEmojiQuery() {
if (!Global::SuggestEmoji()) {
return QString();
}
auto cursor = _field->textCursor();
if (cursor.hasSelection()) {
return QString();
}
auto position = cursor.position();
auto findTextPart = [this, &position] {
auto document = _field->document();
auto block = document->findBlock(position);
for (auto i = block.begin(); !i.atEnd(); ++i) {
auto fragment = i.fragment();
if (!fragment.isValid()) continue;
auto from = fragment.position();
auto till = from + fragment.length();
if (from >= position || till < position) {
continue;
}
if (fragment.charFormat().isImageFormat()) {
continue;
}
position -= from;
_queryStartPosition = from;
return fragment.text();
}
return QString();
};
auto text = findTextPart();
if (text.isEmpty()) {
return QString();
}
const auto isUpperCaseLetter = [](QChar ch) {
return (ch >= 'A' && ch <= 'Z');
};
const auto isLetter = [](QChar ch) {
return (ch >= 'a' && ch <= 'z')
|| (ch >= 'A' && ch <= 'Z')
|| (ch >= '0' && ch <= '9');
};
const auto isSuggestionChar = [](QChar ch) {
return (ch >= 'a' && ch <= 'z')
|| (ch >= 'A' && ch <= 'Z')
|| (ch >= '0' && ch <= '9')
|| (ch == '_')
|| (ch == '-')
|| (ch == '+');
};
const auto isGoodCharBeforeSuggestion = [&](QChar ch) {
return !isSuggestionChar(ch) || (ch == 0);
};
Assert(position > 0 && position <= text.size());
for (auto i = position; i != 0;) {
auto ch = text[--i];
if (ch == ':') {
auto beforeColon = (i < 1) ? QChar(0) : text[i - 1];
if (isGoodCharBeforeSuggestion(beforeColon)) {
// At least one letter after colon.
if (position > i + 1) {
// Skip colon and the first letter.
_queryStartPosition += i + 2;
const auto length = position - i;
auto result = text.mid(i, length);
const auto upperCaseLetters = std::count_if(
result.begin(),
result.end(),
isUpperCaseLetter);
const auto letters = std::count_if(
result.begin(),
result.end(),
isLetter);
if (letters == upperCaseLetters && letters == 1) {
// No upper case single letter suggestions.
// We don't want to suggest emoji on :D and :-P
return QString();
}
return result.toLower();
}
}
return QString();
}
if (position - i > kSuggestionMaxLength) {
return QString();
}
if (!isSuggestionChar(ch)) {
return QString();
}
}
return QString();
}
void SuggestionsController::replaceCurrent(const QString &replacement) {
auto suggestion = getEmojiQuery();
if (suggestion.isEmpty()) {
_suggestions->showWithQuery(QString());
} else {
const auto cursor = _field->textCursor();
const auto position = cursor.position();
const auto from = position - suggestion.size();
_replaceCallback(from, position, replacement);
}
}
void SuggestionsController::handleCursorPositionChange() {
InvokeQueued(this, [this] {
if (_ignoreCursorPositionChange) {
return;
}
_suggestions->showWithQuery(QString());
});
}
void SuggestionsController::suggestionsUpdated(bool visible) {
_shown = visible;
if (_shown) {
_container->resizeToContent();
updateGeometry();
if (!_forceHidden) {
_container->showAnimated(Ui::PanelAnimation::Origin::BottomLeft);
}
} else if (!_forceHidden) {
_container->hideAnimated();
}
}
void SuggestionsController::updateGeometry() {
auto cursor = _field->textCursor();
cursor.setPosition(_queryStartPosition);
auto aroundRect = _field->cursorRect(cursor);
aroundRect.setTopLeft(_field->viewport()->mapToGlobal(aroundRect.topLeft()));
aroundRect.setTopLeft(_container->parentWidget()->mapFromGlobal(aroundRect.topLeft()));
auto boundingRect = _container->parentWidget()->rect();
auto origin = rtl() ? PanelAnimation::Origin::BottomRight : PanelAnimation::Origin::BottomLeft;
auto point = rtl() ? (aroundRect.topLeft() + QPoint(aroundRect.width(), 0)) : aroundRect.topLeft();
point -= rtl() ? QPoint(_container->width() - st::emojiSuggestionsDropdown.padding.right(), _container->height()) : QPoint(st::emojiSuggestionsDropdown.padding.left(), _container->height());
if (rtl()) {
if (point.x() < boundingRect.x()) {
point.setX(boundingRect.x());
}
if (point.x() + _container->width() > boundingRect.x() + boundingRect.width()) {
point.setX(boundingRect.x() + boundingRect.width() - _container->width());
}
} else {
if (point.x() + _container->width() > boundingRect.x() + boundingRect.width()) {
point.setX(boundingRect.x() + boundingRect.width() - _container->width());
}
if (point.x() < boundingRect.x()) {
point.setX(boundingRect.x());
}
}
if (point.y() < boundingRect.y()) {
point.setY(aroundRect.y() + aroundRect.height());
origin = (origin == PanelAnimation::Origin::BottomRight) ? PanelAnimation::Origin::TopRight : PanelAnimation::Origin::TopLeft;
}
_container->move(point);
}
void SuggestionsController::updateForceHidden() {
_forceHidden = !_field->isVisible();
if (_forceHidden) {
_container->hideFast();
} else if (_shown) {
_container->showFast();
}
}
bool SuggestionsController::eventFilter(QObject *object, QEvent *event) {
if (object == _field) {
auto type = event->type();
switch (type) {
case QEvent::Move:
case QEvent::Resize: {
if (_shown) {
updateGeometry();
}
} break;
case QEvent::Show:
case QEvent::ShowToParent:
case QEvent::Hide:
case QEvent::HideToParent: {
updateForceHidden();
} break;
case QEvent::KeyPress: {
auto key = static_cast<QKeyEvent*>(event)->key();
switch (key) {
case Qt::Key_Enter:
case Qt::Key_Return:
case Qt::Key_Tab:
case Qt::Key_Up:
case Qt::Key_Down:
if (_shown && !_forceHidden) {
_suggestions->handleKeyEvent(key);
return true;
}
break;
case Qt::Key_Escape:
if (_shown && !_forceHidden) {
_suggestions->showWithQuery(QString());
return true;
}
break;
}
_textChangeAfterKeyPress = true;
InvokeQueued(this, [this] { _textChangeAfterKeyPress = false; });
} break;
}
}
return QObject::eventFilter(object, event);
}
void SuggestionsController::raise() {
_container->raise();
}
} // namespace Emoji
} // namespace Ui