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Code Issues Releases Wiki Activity

Scroll suggestions by dragging.

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This commit is contained in:
John Preston
2019-04-01 14:35:32 +04:00
parent 9ba65e9ca0
commit 1da9385fe2
2 changed files with 32 additions and 5 deletions
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34
Telegram/SourceFiles/chat_helpers/emoji_suggestions_widget.cpp
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@@ -56,6 +56,7 @@ void SuggestionsWidget::showWithQuery(const QString &query, bool force) {
_toggleAnimated.fire(false);
}
clearSelection();
setPressed(-1);
_rows = std::move(rows);
resizeToRows();
update();
@@ -318,6 +319,9 @@ void SuggestionsWidget::setPressed(int pressed) {
}
if (_pressed != pressed) {
_pressed = pressed;
if (_pressed >= 0) {
_mousePressPosition = QCursor::pos();
}
}
}
@@ -361,6 +365,24 @@ QPoint SuggestionsWidget::mapToInner(QPoint globalPosition) const {
void SuggestionsWidget::mouseMoveEvent(QMouseEvent *e) {
const auto globalPosition = e->globalPos();
if (_dragScrollStart >= 0) {
const auto delta = (_mousePressPosition.x() - globalPosition.x());
const auto scroll = snap(
_dragScrollStart + (rtl() ? -1 : 1) * delta,
0,
_scrollMax);
if (_scroll != scroll) {
_scroll = scroll;
update();
}
return;
} else if ((_pressed >= 0)
&& (_scrollMax > 0)
&& ((_mousePressPosition - globalPosition).manhattanLength()
>= QApplication::startDragDistance())) {
_dragScrollStart = _scroll;
_mousePressPosition = globalPosition;
}
if (inner().contains(mapToInner(globalPosition))) {
if (!_lastMousePosition) {
_lastMousePosition = globalPosition;
@@ -385,23 +407,25 @@ void SuggestionsWidget::selectByMouse(QPoint globalPosition) {
void SuggestionsWidget::mousePressEvent(QMouseEvent *e) {
selectByMouse(e->globalPos());
if (_selected >= 0 && _selected < _rows.size()) {
if (_selected >= 0) {
setPressed(_selected);
}
}
void SuggestionsWidget::mouseReleaseEvent(QMouseEvent *e) {
if (_pressed >= 0 && _pressed < _rows.size()) {
auto pressed = _pressed;
if (_pressed >= 0) {
const auto pressed = _pressed;
setPressed(-1);
if (pressed == _selected) {
if (_dragScrollStart >= 0) {
_dragScrollStart = -1;
} else if (pressed == _selected) {
triggerRow(_rows[_selected]);
}
}
}
bool SuggestionsWidget::triggerSelectedRow() const {
if (_selected >= 0 && _selected < _rows.size()) {
if (_selected >= 0) {
triggerRow(_rows[_selected]);
return true;
}