/**
* \brief Rectangle corresponding to the color at the given index
*/
QRectF indexRect(int index)
{
QSize rc = rowcols();
if ( index == -1 || !rc.isValid() )
return QRectF();
return indexRect(index, rc, actualColorSize(rc));
}
void AppListView::prepareDropSwap()
{
if (m_lastFakeAni || m_dropThresholdTimer->isActive())
return;
const QModelIndex dropIndex = indexAt(m_dropToPos);
if (!dropIndex.isValid())
return;
const QModelIndex dragStartIndex = indexAt(m_dragStartPos);
if (dragStartIndex == dropIndex)
return;
AppsListModel *listModel = qobject_cast<AppsListModel *>(model());
if (!listModel)
return;
listModel->clearDragingIndex();
listModel->setDragingIndex(dragStartIndex);
listModel->setDragDropIndex(dropIndex);
const int startIndex = dragStartIndex.row();
const bool moveToNext = startIndex <= m_dropToPos;
const int start = moveToNext ? startIndex : m_dropToPos;
const int end = !moveToNext ? startIndex : m_dropToPos;
if (start == end)
return;
for (int i(start + moveToNext); i != end - !moveToNext; ++i)
createFakeAnimation(i, moveToNext);
// last animation
createFakeAnimation(end - !moveToNext, moveToNext, true);
m_dragStartPos = indexRect(dropIndex).center();
}
void AppListView::createFakeAnimation(const int pos, const bool moveNext, const bool isLastAni)
{
const QModelIndex index(indexAt(pos));
QLabel *floatLabel = new QLabel(this);
QPropertyAnimation *ani = new QPropertyAnimation(floatLabel, "pos", this);
const QSize rectSize = index.data(AppsListModel::ItemSizeHintRole).toSize();
const QPixmap iconPix = index.data(AppsListModel::AppIconRole).value<QPixmap>();
QStyleOptionViewItem item;
item.rect = QRect(QPoint(0, 0), rectSize);
item.features |= QStyleOptionViewItem::HasDisplay;
QPixmap pixmap(rectSize);
pixmap.fill(Qt::transparent);
QPainter painter(&pixmap);
itemDelegate()->paint(&painter, item, index);
floatLabel->setFixedSize(rectSize);
floatLabel->setPixmap(pixmap);
// lastLabel->setStyleSheet("background-color:red;");
floatLabel->show();
ani->setStartValue(indexRect(index).topLeft());
ani->setEndValue(indexRect(indexAt(moveNext ? pos - 1 : pos + 1)).topLeft());
ani->setEasingCurve(QEasingCurve::OutQuad);
ani->setDuration(300);
connect(ani, &QPropertyAnimation::finished, floatLabel, &QLabel::deleteLater);
if (isLastAni)
{
m_lastFakeAni = ani;
connect(ani, &QPropertyAnimation::finished, this, &AppListView::dropSwap, Qt::QueuedConnection);
// connect(ani, &QPropertyAnimation::finished, [this] {dropSwap(); m_lastFakeAni = nullptr;});
connect(ani, &QPropertyAnimation::valueChanged, m_dropThresholdTimer, &QTimer::stop);
}
ani->start(QPropertyAnimation::DeleteWhenStopped);
}
/**
* \brief Sets the drop properties
*/
void dropEvent(QDropEvent* event)
{
// Find the output location
drop_index = owner->indexAt(event->pos());
if ( drop_index == -1 )
drop_index = palette.count();
// Gather up the color
if ( event->mimeData()->hasColor() )
{
drop_color = event->mimeData()->colorData().value<QColor>();
}
else if ( event->mimeData()->hasText() )
{
drop_color = QColor(event->mimeData()->text());
}
drop_overwrite = false;
QRectF drop_rect = indexRect(drop_index);
if ( drop_index < palette.count() && drop_rect.isValid() )
{
// 1 column => vertical style
if ( palette.columns() == 1 || forced_columns == 1 )
{
// Dragged to the last quarter of the size of the square, add after
if ( event->posF().y() >= drop_rect.top() + drop_rect.height() * 3.0 / 4 )
drop_index++;
// Dragged to the middle of the square, overwrite existing color
else if ( event->posF().x() > drop_rect.top() + drop_rect.height() / 4 &&
( event->dropAction() != Qt::MoveAction || event->source() != owner ||
palette.colorAt(drop_index) == emptyColor ) )
drop_overwrite = true;
}
else
{
// Dragged to the last quarter of the size of the square, add after
if ( event->posF().x() >= drop_rect.left() + drop_rect.width() * 3.0 / 4 )
drop_index++;
// Dragged to the middle of the square, overwrite existing color
else if ( event->posF().x() > drop_rect.left() + drop_rect.width() / 4 &&
( event->dropAction() != Qt::MoveAction || event->source() != owner ||
palette.colorAt(drop_index) == emptyColor ) )
drop_overwrite = true;
}
}
owner->update();
}
///
/// \brief AppListView::indexYOffset return item Y offset of current view
/// \param index item index
/// \return pixel of Y offset
///
int AppListView::indexYOffset(const QModelIndex &index) const
{
return indexRect(index).y();
}