void UrlDialogTreeWidget::paintEvent(QPaintEvent * event)
{
QPainter * p = new QPainter(viewport());
QStyleOptionViewItem option = viewOptions();
QRect rect = event->rect();
#ifdef COMPILE_PSEUDO_TRANSPARENCY
if(KVI_OPTION_BOOL(KviOption_boolUseCompositingForTransparency) && g_pApp->supportsCompositing())
{
p->save();
p->setCompositionMode(QPainter::CompositionMode_Source);
QColor col = KVI_OPTION_COLOR(KviOption_colorGlobalTransparencyFade);
col.setAlphaF((float)((float)KVI_OPTION_UINT(KviOption_uintGlobalTransparencyChildFadeFactor) / (float)100));
p->fillRect(rect, col);
p->restore();
}
else if(g_pShadedChildGlobalDesktopBackground)
{
QPoint pnt = ((KviWindow *)parent())->isDocked() ? viewport()->mapTo(g_pMainWindow, rect.topLeft()) : viewport()->mapTo((KviWindow *)parent(), rect.topLeft());
p->drawTiledPixmap(rect, *(g_pShadedChildGlobalDesktopBackground), pnt);
}
else
{
#endif
//FIXME this is not the treewindowlist
p->fillRect(rect, KVI_OPTION_COLOR(KviOption_colorTreeWindowListBackground));
#ifdef COMPILE_PSEUDO_TRANSPARENCY
}
#endif
delete p;
//call paint on all children
QTreeWidget::paintEvent(event);
}
bool MyTableView::viewportEvent(QEvent * event)
{
if ( event->type() == QEvent::ToolTip )
{
qDebug() << "3";
QHelpEvent *hev = static_cast<QHelpEvent *>(event);
int col = columnAt(hev->x());
int row = rowAt(hev->y());
qDebug() << "col = " << col << ", row = " << row;
QModelIndex idx = model()->index(row, col, QModelIndex());
QString text = idx.data().toString();
QFont font = viewOptions().font;
QFontMetrics fm(font);
int requiredWidth = fm.width(text);
qDebug() << "require width = " << requiredWidth;
qDebug() << "col width = " << columnWidth(col);
if ( columnWidth(col) > requiredWidth )
{
// don't show the tooltip if all text is visible
return true;
}
}
return QTableView::viewportEvent(event);
}
void QmlConsoleView::mousePressEvent(QMouseEvent *event)
{
QPoint pos = event->pos();
QModelIndex index = indexAt(pos);
if (index.isValid()) {
ConsoleItem::ItemType type = (ConsoleItem::ItemType)index.data(
QmlConsoleItemModel::TypeRole).toInt();
bool handled = false;
if (type == ConsoleItem::UndefinedType) {
bool showTypeIcon = index.parent() == QModelIndex();
ConsoleItemPositions positions(visualRect(index), viewOptions().font, showTypeIcon,
true);
if (positions.expandCollapseIcon().contains(pos)) {
if (isExpanded(index))
setExpanded(index, false);
else
setExpanded(index, true);
handled = true;
}
}
if (!handled)
Utils::TreeView::mousePressEvent(event);
} else {
selectionModel()->setCurrentIndex(model()->index(model()->rowCount() - 1, 0),
QItemSelectionModel::ClearAndSelect);
}
}
QWidget* fastEdit(const QModelIndex &i) // Consider this as QAbstractItemView::edit( )
{
QWidget *v = itemDelegate()->createEditor(viewport(), viewOptions(), i);
if (v)
itemDelegate()->setEditorData(v, i);
return v;
}
void TreeView::startDrag(Qt::DropActions supportedActions)
{
QModelIndex index = selectedIndexes().value(0);
if (!index.isValid())
return;
QMimeData *data = model()->mimeData(QModelIndexList() << index);
if (!data)
return;
QRect rect;
QPixmap pixmap;
QPoint point;
{
QAbstractItemDelegate *delegate = itemDelegate(index);
QStyleOptionViewItemV4 option = viewOptions();
option.locale = this->locale();
option.locale.setNumberOptions(QLocale::OmitGroupSeparator);
option.widget = this;
option.state |= QStyle::State_Selected;
option.rect = visualRect(index);
point = option.rect.topLeft();
option.rect.moveTo(0, 0);
option.rect.setSize(delegate->sizeHint(option, index));
rect = option.rect;
pixmap = QPixmap(rect.size());
pixmap.fill(Qt::transparent);
QPainter painter(&pixmap);
delegate->paint(&painter, option, index);
}
QDrag *drag = new QDrag(this);
drag->setPixmap(pixmap);
drag->setMimeData(data);
point = QCursor::pos() - viewport()->mapToGlobal(point);
drag->setHotSpot(point);
// drag->setHotSpot(QCursor::pos() - rect.topLeft());
Qt::DropAction setDefaultDropAction = QAbstractItemView::defaultDropAction();
Qt::DropAction defaultDropAction = Qt::IgnoreAction;
if (setDefaultDropAction != Qt::IgnoreAction && (supportedActions & setDefaultDropAction))
defaultDropAction = setDefaultDropAction;
else if (supportedActions & Qt::CopyAction && dragDropMode() != QAbstractItemView::InternalMove)
defaultDropAction = Qt::CopyAction;
if (drag->exec(supportedActions, defaultDropAction) == Qt::IgnoreAction
&& index.data(ItemTypeRole).toInt() == ContactType) {
if (QWidget *widget = QApplication::topLevelAt(QCursor::pos())) {
if (widget->window() == this->window())
return;
}
Event ev("contact-list-drop",
QCursor::pos() - point,
index.data(BuddyRole));
ev.send();
}
// debug() << "DropAction" << drag->exec(supportedActions, defaultDropAction);
// if (drag->exec(supportedActions, defaultDropAction) == Qt::MoveAction)
// d->clearOrRemove();
// {}
}
void ImageView::paintEvent(QPaintEvent *event)
{
//QItemSelectionModel *selections = selectionModel();
QStyleOptionViewItem option = viewOptions();
//QStyle::State state = option.state;
//QBrush background = option.palette.base();
QPen foreground(option.palette.color(QPalette::WindowText));
//QBrush highlight(option.palette.color(QPalette::Highlight));
//p.fillRect(event->rect(),background);
if (!model())
return;
QPainter p(viewport());
int n = model()->rowCount();
p.translate(-horizontalOffset(),-verticalOffset());
for (int i=0;i<n;i++)
{
QModelIndex index = model()->index(i,0);
QRect rect = itemRect(index);
p.setPen(foreground);
//p.drawRect(rect);
QVariant decoration = model()->data(index,Qt::DecorationRole);
if (decoration.type() == QVariant::Pixmap)
{
QPixmap pixmap = qvariant_cast<QPixmap>(decoration);
if (!pixmap.isNull())
{
QSize pixmapSize = pixmap.size();
QSize itemSize = rect.size();
pixmapSize.scale(itemSize,Qt::KeepAspectRatio);
QSize rest = (itemSize - pixmapSize)/2;
QRect pixmapRect(QPoint(rest.width(),rest.height()),pixmapSize);
pixmapRect.translate(rect.topLeft());
p.drawPixmap(pixmapRect,pixmap);
}
}
if (index == currentIndex())
{
QColor color(option.palette.color(QPalette::Highlight));
color.setAlpha(100);
p.fillRect(rect,color);
}
//qDebug() << rect << foreground.color() << background.color();
//p.drawText(rect,Qt::AlignCenter,QString::number(i));
}
event->accept();
}
QModelIndex PieView::indexAt(const QPoint &point) const
{
if (validItems == 0)
return QModelIndex();
int wx = point.x() + horizontalScrollBar()->value();
int wy = point.y() + verticalScrollBar()->value();
if (wx < totalSize) {
double cx = wx - totalSize/2;
double cy = totalSize/2 - wy;
double d = pow(pow(cx, 2) + pow(cy, 2), 0.5);
if (d == 0 || d > pieSize/2)
return QModelIndex();
double angle = (180 / M_PI) * acos(cx/d);
if (cy < 0)
angle = 360 - angle;
double startAngle = 0.0;
for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
double value = model()->data(index).toDouble();
if (value > 0.0) {
double sliceAngle = 360*value/totalValue;
if (angle >= startAngle && angle < (startAngle + sliceAngle))
return model()->index(row, 1, rootIndex());
startAngle += sliceAngle;
}
}
} else {
double itemHeight = QFontMetrics(viewOptions().font).height();
int listItem = int((wy - margin) / itemHeight);
int validRow = 0;
for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
if (model()->data(index).toDouble() > 0.0) {
if (listItem == validRow)
return model()->index(row, 0, rootIndex());
validRow++;
}
}
}
return QModelIndex();
}
bool AlbumSelectionTreeView::viewportEvent(QEvent* event)
{
// let the base class handle the event if it is not a tool tip request
if (event->type() != QEvent::ToolTip)
{
return AlbumTreeView::viewportEvent(event);
}
// only show tool tips if requested
if (!d->enableToolTips)
{
return false;
}
// check that we got a correct event
QHelpEvent* const helpEvent = dynamic_cast<QHelpEvent*> (event);
if (!helpEvent)
{
qCDebug(DIGIKAM_GENERAL_LOG) << "Unable to determine the correct type of the event. "
<< "This should not happen.";
return false;
}
// find the item this tool tip belongs to
QModelIndex index = indexAt(helpEvent->pos());
if (!index.isValid())
{
return true;
}
PAlbum* const album = albumForIndex(index);
if (!album || album->isRoot() || album->isAlbumRoot())
{
// there was no album so we really don't want to show a tooltip.
return true;
}
QRect itemRect = visualRect(index);
if (!itemRect.contains(helpEvent->pos()))
{
return true;
}
QStyleOptionViewItem option = viewOptions();
option.rect = itemRect;
// visualRect can be larger than viewport, intersect with viewport rect
option.rect &= viewport()->rect();
option.state |= (index == currentIndex() ? QStyle::State_HasFocus : QStyle::State_None);
d->toolTip->show(option, index);
return true;
}
/**
* QT 4.7.1 拖拽的函数默认调用过程:
*
* Model.supportedDropActions()
*
* View.startDrag()
* Model.mimeData() // 获取拖拽数据
* Model.supportedDragActions()
* Model.supportedDropActions()
* QDrag.exec() // 阻塞，直到拖拽结束
*
* // 在拖拽过程中，如果拖拽进入某个节点
* View.dragEnterEvent() // 默认实现会拒绝拖拽，需要重写并调用 QDragEnterEvent.acceptProposedAction()
* Model.mimeTypes()
* View.dragMoveEvent()
* Model.mimeTypes()
* View.dragLeaveEvent()
*
* // 拖拽结束后
* View.dropEvent()
* Model.dropMimeData() // QT用来接收数据
*
* // exec()执行完后，如果是 MoveAction，则调用
* Model.removeSelectedRows() // QT用来删除数据
*
* 上述默认过程对跨 View 拖放支持不好, 下面的startDrag()函数摘自默认实现，并
* 将部分代码替换掉以免调用removeSelectedRows()函数
*/
void DirectoryTree::startDrag(Qt::DropActions)
{
const QModelIndexList indexes = selectedIndexes();
if (indexes.count() == 0)
return;
// setup pixmap
QRect rect = visualRect(indexes.at(0));
QList<QRect> rects;
for (size_t i = 0, s = indexes.count(); i < s; ++i)
{
rects.append(visualRect(indexes.at(i)));
rect |= rects.at(i);
}
rect = rect.intersected(viewport()->rect());
QPixmap pixmap(rect.size());
pixmap.fill(palette().base().color());
QPainter painter(&pixmap);
QStyleOptionViewItem option = viewOptions();
option.state |= QStyle::State_Selected;
for (size_t j = 0, s = indexes.count(); j < s; ++j)
{
option.rect = QRect(rects.at(j).topLeft() - rect.topLeft(),
rects.at(j).size());
itemDelegate()->paint(&painter, option, indexes.at(j));
}
painter.end();
// create drag object
QDrag *drag = new QDrag(this);
drag->setPixmap(pixmap);
drag->setMimeData(model()->mimeData(indexes));
drag->setHotSpot(viewport()->mapFromGlobal(QCursor::pos()) - rect.topLeft());
/**
* 在拖动之前，先把 parent 和 row 保存下来，
* 在 Model.dropMimeData() 中统一进行底层数据和视图层数据的修改，
* 避免索引混乱
*/
DirectoryTreeModel *m = (DirectoryTreeModel*) model();
QModelIndex parent = indexes.at(0).parent();
int row = indexes.at(0).row();
m->prepare_draging_drop(parent, row);
/*
* 这里的原来的实现 removeSelectedRows() 是我们不需要的, 且 QDrag->start() 总是允许 Qt::CopyAction
* 而我们需要的是，内部用 Qt::MoveAction，外部用 Qt::CopyAction且内部不支持 Qt::CopyAction且内部不支持
* Qt::CopyAction，否则导致错误
*
if (drag->start(supportedActions) == Qt::MoveAction)
removeSelectedRows();
*/
drag->exec(Qt::MoveAction | Qt::CopyAction, Qt::MoveAction);
}
bool KoResourceItemView::viewportEvent(QEvent *event)
{
if (event->type() == QEvent::ToolTip && model()) {
QHelpEvent *he = static_cast<QHelpEvent *>(event);
QStyleOptionViewItem option = viewOptions();
QModelIndex index = model()->buddy(indexAt(he->pos()));
if (index.isValid()) {
option.rect = visualRect(index);
m_tip.showTip(this, he->pos(), option, index);
return true;
}
}
return QTableView::viewportEvent(event);
}
void QgsLocatorResultsView::recalculateSize()
{
// try to show about 20 rows
int rowSize = 20 * itemDelegate()->sizeHint( viewOptions(), model()->index( 0, 0 ) ).height();
// try to take up a sensible portion of window width (about half)
int width = std::max( 300, window()->size().width() / 2 );
QSize newSize( width, rowSize + frameWidth() * 2 );
// resize the floating widget this is contained within
parentWidget()->resize( newSize );
QTreeView::resize( newSize );
header()->resizeSection( 0, width / 2 );
header()->resizeSection( 1, 0 );
}
void ItemList::startDrag(Qt::DropActions supportedActions)
{
const QModelIndexList indexes = selectedIndexes();
if (indexes.count() == 0)
return;
// setup pixmap
QRect rect = visualRect(indexes.at(0));
QList<QRect> rects;
for (size_t i = 0, s = indexes.count(); i < s; ++i)
{
rects.append(visualRect(indexes.at(i)));
rect |= rects.at(i);
}
rect = rect.intersected(viewport()->rect());
QPixmap pixmap(rect.size());
pixmap.fill(palette().base().color());
QPainter painter(&pixmap);
QStyleOptionViewItem option = viewOptions();
option.state |= QStyle::State_Selected;
for (size_t j = 0, s = indexes.count(); j < s; ++j)
{
option.rect = QRect(rects.at(j).topLeft() - rect.topLeft(),
rects.at(j).size());
itemDelegate()->paint(&painter, option, indexes.at(j));
}
painter.end();
// create drag object
QDrag *drag = new QDrag(this);
drag->setPixmap(pixmap);
drag->setMimeData(model()->mimeData(indexes));
drag->setHotSpot(viewport()->mapFromGlobal(QCursor::pos()) - rect.topLeft());
/*
* 这里的原来的实现被注释掉
if (drag->start(supportedActions) == Qt::MoveAction)
removeSelectedRows();
*/
ItemListModel *m = dynamic_cast<ItemListModel*>(model());
assert(NULL != m); /// QAbstractItemModel::supportedDragActions()居然不是虚函数，我C了!!!
Qt::DropAction rs = drag->exec(Qt::MoveAction | Qt::CopyAction, Qt::MoveAction);
if (rs == Qt::MoveAction)
{
assert(indexes.count() != 0);
m->_remove_after_drag(indexes.at(0).row());
}
}
void KDPropertyView::drawBranches(QPainter* painter, const QRect& rect, const QModelIndex& index) const
{
QStyleOptionViewItem opt = viewOptions();
QStyleOptionViewItem option = opt;
const QAbstractItemModel * const m = model();
if ( index.column() == 0 && m && m->data( index, KDPropertyModel::ChangedRole ) == true )
option.font.setBold(true);
/*
if ( m && m->data(index,KDPropertyModel::SeparatorRole) == true ) {
painter->fillRect(rect, option.palette.dark());
} else if (selectionModel()->isSelected(index)) {
painter->fillRect(rect, option.palette.brush(QPalette::Highlight));
}
*/
if( m && m->parent(index) == QModelIndex() ) {
painter->fillRect(rect, option.palette.color(QPalette::AlternateBase));
} else {
QRect topr = QRect( rect.topLeft(), QPoint( rect.left()+indentation(), rect.bottom() ) );
painter->fillRect( topr, option.palette.color(QPalette::AlternateBase));
//painter->drawLine( rect.x()+indentation(), rect.top(), rect.x()+indentation(), rect.bottom());
painter->fillRect( QRect( topr.topRight(), rect.bottomRight() ), option.palette.base());
painter->setPen( option.palette.color(QPalette::AlternateBase) );
painter->drawLine( topr.right(), rect.bottom(), rect.right(), rect.bottom());
}
if (m && m->hasChildren(index)) {
static const int size = 9;
opt.state |= QStyle::State_Children;
opt.rect.setRect(rect.width() - (indentation() + size) / 2,
rect.y() + (rect.height() - size) / 2, size, size);
if (isExpanded(index))
opt.state |= QStyle::State_Open;
QColor bg;
QVariant bgv = m->data( index,
Qt::BackgroundColorRole);
if( qVariantCanConvert<QColor>(bgv) ) {
bg = qVariantValue<QColor>(bgv);
} else {
bg = option.palette.color( QPalette::Background );
}
painter->fillRect(opt.rect, bg);
style()->drawPrimitive(QStyle::PE_IndicatorBranch, &opt, painter, this);
}
}
int MovableTableWidget::sizeHintForColumn(int column) const
{
ensurePolished();
QStyleOptionViewItem option = viewOptions();
int hint = 0;
QModelIndex index;
for (int row = 0; row <= rowCount(); ++row) {
index = indexFromItem(item(row, column));
hint = qMax(hint, itemDelegate(index)->sizeHint(option, index).width());
}
return showGrid() ? hint + 1 : hint;
}
// returns the selected item whose checkbox lies under 'pos'
// returns 0 if not selected, no item at pos, or does not fit inside checkbox
bool QMultiSelectWidget::isCheckBoxUnderPosition(const QPoint &pos)
{
QListWidgetItem* item = itemAt(pos);
if (item) {
// with the help of styles, check if checkbox rect contains 'pos'
QStyleOptionButton opt;
opt.QStyleOption::operator=(viewOptions());
opt.rect = visualItemRect(item);
QRect r = style()->subElementRect(QStyle::SE_ViewItemCheckIndicator, &opt);
// assure that the item is also selected
if (r.contains(pos)) {
return true;
}
}
return false;
}
QListWidgetItem* PluginListWidget::selectedCheckStateItem(const QPoint& pos){
QListWidgetItem* item = itemAt(pos);
if (item)
{
// with the help of styles, check if checkbox rect contains 'pos'
QStyleOptionButton opt;
opt.QStyleOption::operator=(viewOptions());
opt.rect = visualItemRect(item);
QRect r = style()->subElementRect(QStyle::SE_ViewItemCheckIndicator, &opt);
// assure that the item is also selected
if (selectedItems().contains(item) && r.contains(pos))
{
return item;
}
}
return 0;
}
int QCustomTableWidget::sizeHintForColumn(int column) const
{
QStyleOptionViewItem option(viewOptions());
int hint = 0;
QAbstractItemDelegate *delegate = itemDelegate();
QAbstractItemModel *itemModel = model();
for(int row = 0; row < rowCount(); row++)
{
hint = qMax(hint, delegate->sizeHint(option, itemModel->index(row,column)).width());
}
if (showGrid())
{
hint++;
}
return hint;
}
QSize CodeCompleterListView::calculateSize() const
{
static const int maxVisibleItems = 10;
// Determine size by calculating the space of the visible items
const int visibleItems = qMin(model()->rowCount(), maxVisibleItems);
const int firstVisibleRow = verticalScrollBar()->value();
const QStyleOptionViewItem &option = viewOptions();
QSize shint;
for (int i = 0; i < visibleItems; ++i) {
QSize tmp = itemDelegate()->sizeHint(option, model()->index(i + firstVisibleRow, 0));
if (shint.width() < tmp.width())
shint = tmp;
}
shint.rheight() *= visibleItems;
return shint;
}
bool TracksView::viewportEvent(QEvent *event)
{
if (event->type() == QEvent::ToolTip) {
QHelpEvent *helpEvent = static_cast<QHelpEvent *>(event);
QModelIndex index = indexAt(helpEvent->pos());
if (index.isValid()) {
QSize sizeHint = itemDelegate(index)->sizeHint(viewOptions(), index);
QRect rItem(0, 0, sizeHint.width(), sizeHint.height());
QRect rVisual = visualRect(index);
if (rItem.width() <= rVisual.width()) {
QToolTip::hideText();
return false;
}
}
}
return QTableView::viewportEvent(event);
}
int CustomTreeView::sizeHintForColumn(int col) const {
if (!model() || col > 0)
return -1;
ensurePolished();
int hint = 0;
QModelIndex index = model()->index(0,col);
while (index.isValid()) {
if (viewport()->rect().contains(visualRect(index))) {
hint = qMax(hint, visualRect(index).x() + itemDelegate(index)->sizeHint(viewOptions(), index).width());
}
index = indexBelow(index);
}
return qMin(hint, viewport()->rect().width());
}
//-----------------------------------------------------------------------------
void vktraceviewer_QTimelineView::drawTimelineItem(QPainter* painter, const QModelIndex &index)
{
QRectF rect = viewportRect(index);
// don't draw if the rect is outside the viewport
if (!rect.isValid() ||
rect.bottom() < 0 ||
rect.y() > viewport()->height() ||
rect.x() > viewport()->width() ||
rect.right() < 0)
{
return;
}
QStyleOptionViewItem option = viewOptions();
option.rect = rect.toRect();
if (selectionModel()->isSelected(index))
option.state |= QStyle::State_Selected;
if (currentIndex() == index)
option.state |= QStyle::State_HasFocus;
// check mask to determine if this item should be drawn, or if something has already covered it's pixels
vktrace_trace_packet_header* pHeader = (vktrace_trace_packet_header*)index.internalPointer();
QVector<int>& mask = m_threadMask[pHeader->thread_id];
bool drawItem = false;
int x = option.rect.x();
int right = qMin( qMax(x, option.rect.right()), viewport()->width()-1);
for (int pixel = qMax(0, x); pixel <= right; pixel++)
{
if (mask[pixel] == 0)
{
drawItem = true;
mask[pixel] = 1;
}
}
// draw item if it should be visible
if (drawItem)
{
itemDelegate()->paint(painter, option, index);
}
}
void TiledListView::paintEvent(QPaintEvent*)
{
QPainter painter(viewport());
painter.setRenderHints(QPainter::Antialiasing|
QPainter::TextAntialiasing);
for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 0, rootIndex());
QRectF rect = viewportRectForRow(row);
if (!rect.isValid() || rect.bottom() < 0 ||
rect.y() > viewport()->height())
continue;
QStyleOptionViewItem option = viewOptions();
option.rect = rect.toRect();
if (selectionModel()->isSelected(index))
option.state |= QStyle::State_Selected;
if (currentIndex() == index)
option.state |= QStyle::State_HasFocus;
itemDelegate()->paint(&painter, option, index);
paintOutline(&painter, rect);
}
}
QRect PieView::itemRect(const QModelIndex &index) const
{
if (!index.isValid())
return QRect();
// Check whether the index's row is in the list of rows represented
// by slices.
QModelIndex valueIndex;
if (index.column() != 1)
valueIndex = model()->index(index.row(), 1, rootIndex());
else
valueIndex = index;
if (model()->data(valueIndex).toDouble() > 0.0) {
int listItem = 0;
for (int row = index.row()-1; row >= 0; --row) {
if (model()->data(model()->index(row, 1, rootIndex())).toDouble() > 0.0)
listItem++;
}
double itemHeight;
switch (index.column()) {
case 0:
itemHeight = QFontMetrics(viewOptions().font).height();
return QRect(totalSize,
int(margin + listItem*itemHeight),
totalSize - margin, int(itemHeight));
case 1:
return viewport()->rect();
}
}
return QRect();
}
int NavigableTableView::sizeHintForRow(int row) const {
if (!model())
return -1;
ensurePolished();
int left = qMax(0, horizontalHeader()->visualIndexAt(0));
int right = horizontalHeader()->visualIndexAt(viewport()->width());
if (right < 0) right = model()->columnCount();
int hint = 0;
for (int column = left; column <= right; ++column) {
if (horizontalHeader()->isSectionHidden(column))
continue;
QModelIndex index = model()->index(row, column);
hint = qMax(hint, itemDelegate(index)->sizeHint(viewOptions(), index).height());
}
return hint;
}
bool TreeWidget::viewportEvent(QEvent* event)
{
if (event->type() == QEvent::ToolTip) {
QHelpEvent* he = static_cast<QHelpEvent*>(event);
TreeItem* item = static_cast<TreeItem*>(itemAt(he->pos()));
if (item && !item->parentItem() && !item->toolTip(0).isEmpty()) {
QStyleOptionViewItem opt = viewOptions();
opt.icon = item->icon(0);
opt.rect = visualItemRect(item);
opt.features |= QStyleOptionViewItem::HasDecoration;
QRect rect = style()->subElementRect(QStyle::SE_ItemViewItemDecoration, &opt, this);
if (rect.contains(he->pos())) {
#if QT_VERSION >= 0x050200
QToolTip::showText(he->globalPos(), item->toolTip(0), this, rect, 1250);
#else
QToolTip::showText(he->globalPos(), item->toolTip(0), this, rect);
#endif
}
}
return true;
}
return QTreeWidget::viewportEvent(event);
}
void LayerTreeWidget::mousePressEvent(QMouseEvent *event)
{
if (event->button()== Qt::RightButton)
return;
else
{
QTreeWidgetItem* item = itemAt(event->pos());
if (rectCheckbox.isEmpty() || rectCheckbox.width() <= 0)
{
QStyleOptionViewItem option = viewOptions();
if (item)
rectCheckbox = m_itemDelegate->GetCheckBoxRect(indexFromItem(item), option);
}
if (item && item->childCount() == 0
&& event->x() < rectCheckbox.right() && event->x() > rectCheckbox.left())
{
m_bCheckBoxClicked = true;
return;
}
QTreeWidget::mousePressEvent(event);
}
}
int NavigableTableView::sizeHintForColumn(int col) const {
if (!model())
return -1;
ensurePolished();
int top = qMax(0, verticalHeader()->visualIndexAt(0));
int bottom = verticalHeader()->visualIndexAt(viewport()->height());
int hint = 0;
if (bottom == -1 || (bottom+10) >= model()->rowCount()) {
bottom = model()->rowCount() - 1;
}
else {
bottom += 10;
}
for (int row = top; row <= bottom; ++row) {
QModelIndex index = model()->index(row, col);
hint = qMax(hint, itemDelegate(index)->sizeHint(viewOptions(), index).width());
}
return hint;
}
void KNMusicAlbumView::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event)
//Initial the painter.
QPainter painter(viewport());
painter.setRenderHints(QPainter::Antialiasing |
QPainter::TextAntialiasing |
QPainter::SmoothPixmapTransform,
true);
//Get the option view item.
QStyleOptionViewItem option=viewOptions();
//Check if we need to paint the background.
if(autoFillBackground())
{
painter.fillRect(rect(), option.palette.base());
}
//Update the parameters of the view first.
updateParameters();
//Check the model first.
if(m_proxyModel==nullptr)
{
return;
}
//Get the row count.
int albumCount=m_proxyModel->rowCount();
//Calculate the line count.
m_lineCount=(albumCount+m_maxColumnCount-1)/m_maxColumnCount;
//Check the album count first.
if(albumCount==0)
{
return;
}
int currentColumn=0,
currentLeft=m_spacing,
currentLine=verticalScrollBar()->value()/m_itemSpacingHeight, //Skip the before.
currentTop=m_spacing+currentLine*m_itemSpacingHeight,
currentRow=currentLine*m_maxColumnCount,
heightSurplus=height()+m_itemSpacingHeight;
//Change the origin of coordinate.
painter.translate(0, -verticalScrollBar()->value());
//Draw all the albums.
while(currentRow < albumCount && heightSurplus > 0)
{
//Get the source index of the item.
QModelIndex proxyIndex=m_proxyModel->index(currentRow, 0);
//If the source index is not the current index, then draw the album.
if(m_proxyModel->mapToSource(proxyIndex)!=m_selectedIndex)
{
paintAlbum(painter,
QPoint(currentLeft, currentTop),
proxyIndex);
}
//Add current row and column.
currentRow++;
currentColumn++;
//Check if we need to move to next row.
if(currentColumn>=m_maxColumnCount)
{
//Add one line.
currentLine++;
//Reset the column.
currentColumn=0;
//Change the position.
currentLeft=m_spacing;
currentTop+=m_itemSpacingHeight;
heightSurplus-=m_itemSpacingHeight;
}
else
{
//Move to next column position.
currentLeft+=m_itemSpacingWidth;
}
}
//Update the scroll bar value.
updateGeometries();
}
void ColorGridView::paintEvent(QPaintEvent *event)
{
// To make it clear, we do not use delegate at all
// QItemSelectionModel *selections = selectionModel();
QStyleOptionViewItem option = viewOptions();
QStyle::State state = option.state;
QBrush background = option.palette.base();
QPen foreground(option.palette.color(QPalette::WindowText));
QPen textPen(option.palette.color(QPalette::Text));
QPen highlightedPen(option.palette.color(QPalette::HighlightedText));
QPainter painter(viewport());
// close anti aliasing to make it more clear
// painter.setRenderHint(QPainter::Antialiasing);
painter.fillRect(event->rect(), background);
painter.setPen(Qt::white);
QBrush brush;
brush.setTextureImage(backgroundImg);
painter.setBrush(brush);
painter.translate(margin - horizontalScrollBar()->value(),
margin - verticalScrollBar()->value());
for(int i = 0; i<gridCount; ++i){
for(int j=0; j<gridCount; ++j){
painter.drawImage(i*(gridMargin+gridWidth),j*(gridMargin+gridWidth),
backgroundImg);
}
}
if( !model() )return;
for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
for(int column = 0; column < model()->columnCount(rootIndex()); ++column)
{
QModelIndex index = model()->index(row, column, rootIndex());
QColor color = model()->data(index).value<QColor>();
int j = index.row();
int i = index.column();
if(color.isValid()){
//draw white background to prevent disturbings of background if transparent color
painter.setBrush(Qt::white);
painter.drawRect(i*(gridMargin+gridWidth),j*(gridMargin+gridWidth),
gridWidth,gridWidth);
painter.setBrush(color);
painter.drawRect(i*(gridMargin+gridWidth),j*(gridMargin+gridWidth),
gridWidth,gridWidth);
}
}
}
QModelIndexList list = selectedIndexes();
if( !list.isEmpty() ){
QModelIndex index = list.at(0);
// Qt::ItemFlags flags = index.flags();
// if(flags.testFlag(QItemSelectionModel::Select)){
painter.setPen(textPen);
// }
// if(flags.testFlag(QItemSelectionModel::Toggle)){
// painter.setPen(highlightedPen);
// }
int row = index.row();
int column = index.column();
// QPointF start(column*(gridMargin+gridWidth),row*(gridMargin+gridWidth));
// QRadialGradient gradient(start+QPointF(gridWidth/2,gridWidth/2),0.1,start+QPointF(gridWidth,gridWidth));
// gradient.setColorAt(0.5,Qt::transparent);
// gradient.setColorAt(1.0,Qt::black);
// foreground = QPen(Qt::black);
// QBrush brush(gradient);
// brush.setStyle(Qt::RadialGradientPattern);
painter.setBrush(Qt::NoBrush);
// painter.setBrush(brush);
painter.drawRect(column*(gridMargin+gridWidth),row*(gridMargin+gridWidth),
gridWidth,gridWidth);
}
}
void KNMusicAlbumView::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event)
//Initial the painter.
QPainter painter(viewport());
painter.setRenderHints(QPainter::Antialiasing |
QPainter::TextAntialiasing |
QPainter::SmoothPixmapTransform,
true);
//Check if we need to paint the background.
if(autoFillBackground())
{
painter.fillRect(rect(), viewOptions().palette.base());
}
//Check the model first.
if(m_proxyModel==nullptr)
{
return;
}
//Get the row count.
int albumCount=m_proxyModel->rowCount();
//Check the album count first.
if(albumCount==0)
{
return;
}
//Calculate the line count.
m_lineCount=(albumCount+m_maxColumnCount-1)/m_maxColumnCount;
//Generate the parameters.
int currentColumn=0,
currentLeft=m_spacing,
currentLine=verticalScrollBar()->value()/m_itemSpacingHeight,
currentTop=m_spacing+currentLine*m_itemSpacingHeight,
currentRow=currentLine*m_maxColumnCount,
heightSurplus=height()+m_itemSpacingHeight;
/*
* currentColumn
* |
* +-------------------------------------------------+
* | +---+ +---+ +---+ +---+ +---+ +---+ +---+ +---+ |
* | | | | | | | | | | | | | | | | | |
* | +---+ +---+ +---+ +---+ +---+ +---+ +---+ +---+ |
* | |
* | +---+ +---+ xxxxx-currentTop |
* | | | | | xxxxx | - currentLine
* | +---+ +---+ xxxxx |
* | | | | -+
* | currentLeft-+ | | |
* | +--QModelIndex(25252, 0) | |
* | | | |
* | currentRow | +-heightSurplus
* | | |
* | | |
* | | |
* +-------------------------------------------------+ -+
*/
//Change the origin of coordinate.
painter.translate(0, -verticalScrollBar()->value());
//Draw all the albums, until there's no album left, no height surplus.
while(currentRow < albumCount && heightSurplus > 0)
{
//Get the source index of the item.
QModelIndex &&proxyIndex=m_proxyModel->index(currentRow, 0);
//If the source index is not the current index, then draw the album.
if(m_proxyModel->mapToSource(proxyIndex)!=m_selectedIndex)
{
//Draw the unselect album.
paintAlbum(painter, currentLeft, currentTop, proxyIndex);
}
//Add current row to the next album model row.
++currentRow;
//Add current column to the next position.
++currentColumn;
//Check if we need to move to next row.
if(currentColumn>=m_maxColumnCount)
{
//Add current line.
++currentLine;
//Reset the column.
currentColumn=0;
//Change the position.
currentLeft=m_spacing;
currentTop+=m_itemSpacingHeight;
heightSurplus-=m_itemSpacingHeight;
}
else
{
//Move to next column position.
currentLeft+=m_itemSpacingWidth;
}
}
//Update the scroll bar value.
updateGeometries();
}