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Code Issues Releases Wiki Activity

Scroll suggestions by dragging.

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
View File

@ -56,6 +56,7 @@ void SuggestionsWidget::showWithQuery(const QString &query, bool force) {
_toggleAnimated.fire(false); _toggleAnimated.fire(false);
} }
clearSelection(); clearSelection();
setPressed(-1);
_rows = std::move(rows); _rows = std::move(rows);
resizeToRows(); resizeToRows();
update(); update();
@ -318,6 +319,9 @@ void SuggestionsWidget::setPressed(int pressed) {
} }
if (_pressed != pressed) { if (_pressed != pressed) {
_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) { void SuggestionsWidget::mouseMoveEvent(QMouseEvent *e) {
const auto globalPosition = e->globalPos(); 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 (inner().contains(mapToInner(globalPosition))) {
if (!_lastMousePosition) { if (!_lastMousePosition) {
_lastMousePosition = globalPosition; _lastMousePosition = globalPosition;
@ -385,23 +407,25 @@ void SuggestionsWidget::selectByMouse(QPoint globalPosition) {
void SuggestionsWidget::mousePressEvent(QMouseEvent *e) { void SuggestionsWidget::mousePressEvent(QMouseEvent *e) {
selectByMouse(e->globalPos()); selectByMouse(e->globalPos());
if (_selected >= 0 && _selected < _rows.size()) { if (_selected >= 0) {
setPressed(_selected); setPressed(_selected);
} }
} }
void SuggestionsWidget::mouseReleaseEvent(QMouseEvent *e) { void SuggestionsWidget::mouseReleaseEvent(QMouseEvent *e) {
if (_pressed >= 0 && _pressed < _rows.size()) { if (_pressed >= 0) {
auto pressed = _pressed; const auto pressed = _pressed;
setPressed(-1); setPressed(-1);
if (pressed == _selected) { if (_dragScrollStart >= 0) {
_dragScrollStart = -1;
} else if (pressed == _selected) {
triggerRow(_rows[_selected]); triggerRow(_rows[_selected]);
} }
} }
} }
bool SuggestionsWidget::triggerSelectedRow() const { bool SuggestionsWidget::triggerSelectedRow() const {
if (_selected >= 0 && _selected < _rows.size()) { if (_selected >= 0) {
triggerRow(_rows[_selected]); triggerRow(_rows[_selected]);
return true; return true;
} }

3
Telegram/SourceFiles/chat_helpers/emoji_suggestions_widget.h
View File

@ -78,6 +78,9 @@ private:
int _oneWidth = 0; int _oneWidth = 0;
QMargins _padding; QMargins _padding;
QPoint _mousePressPosition;
int _dragScrollStart = -1;
rpl::event_stream<bool> _toggleAnimated; rpl::event_stream<bool> _toggleAnimated;
rpl::event_stream<QString> _triggered; rpl::event_stream<QString> _triggered;