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#include "dbtreeitemdelegate.h"
#include "dbtreeitem.h"
#include "dbtreemodel.h"
#include "common/utils_sql.h"
#include "uiconfig.h"
#include "dbtree.h"
#include "dbtreeview.h"
#include <QPainter>
#include <QDebug>
DbTreeItemDelegate::DbTreeItemDelegate(QObject *parent) :
QStyledItemDelegate(parent)
{
}
QSize DbTreeItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QSize size = QStyledItemDelegate::sizeHint(option, index);
QFont f = CFG_UI.Fonts.DbTree.get();
QFontMetrics fm(f);
size.setHeight(qMax(18, fm.height()));
return size;
}
void DbTreeItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QStyleOptionViewItem opt = option;
initStyleOption(&opt, index);
const DbTreeModel* model = dynamic_cast<const DbTreeModel*>(index.model());
DbTreeItem* item = dynamic_cast<DbTreeItem*>(model->itemFromIndex(index));
opt.font = CFG_UI.Fonts.DbTree.get();
opt.fontMetrics = QFontMetrics(opt.font);
QModelIndex currIndex = DBTREE->getView()->selectionModel()->currentIndex();
if (currIndex.isValid() && item->index() == currIndex)
opt.state |= QStyle::State_HasFocus;
QStyledItemDelegate::paint(painter, opt, index);
if (!CFG_UI.General.ShowDbTreeLabels.get())
return;
switch (item->getType())
{
case DbTreeItem::Type::DIR:
break;
case DbTreeItem::Type::DB:
paintDb(painter, opt, index, item);
break;
case DbTreeItem::Type::TABLES:
case DbTreeItem::Type::INDEXES:
case DbTreeItem::Type::TRIGGERS:
case DbTreeItem::Type::VIEWS:
case DbTreeItem::Type::COLUMNS:
paintChildCount(painter, opt, index, item);
break;
case DbTreeItem::Type::TABLE:
paintTableLabel(painter, opt, index, item);
break;
case DbTreeItem::Type::VIRTUAL_TABLE:
paintVirtualTableLabel(painter, opt, index, item);
break;
case DbTreeItem::Type::INDEX:
paintSystemIndexLabel(painter, opt, index, item);
break;
case DbTreeItem::Type::TRIGGER:
case DbTreeItem::Type::VIEW:
case DbTreeItem::Type::COLUMN:
case DbTreeItem::Type::ITEM_PROTOTYPE:
case DbTreeItem::Type::SIGNATURE_OF_THIS:
break;
}
}
void DbTreeItemDelegate::paintDb(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index, DbTreeItem *item) const
{
static const QString versionStringTemplate = QStringLiteral("(%1)");
QString versionString = versionStringTemplate.arg("?");
Db* db = item->getDb();
if (!db)
return;
if (db->isValid())
{
QString t = db->getTypeLabel();
versionString = versionStringTemplate.arg(t);
}
else
{
versionString = versionStringTemplate.arg(tr("error", "dbtree labels"));
}
paintLabel(painter, option, index, item, versionString);
}
void DbTreeItemDelegate::paintChildCount(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index, DbTreeItem *item) const
{
int cnt = item->rowCount();
if (cnt > 0)
paintLabel(painter, option, index, item, QString("(%1)").arg(cnt));
}
void DbTreeItemDelegate::paintTableLabel(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index, DbTreeItem* item) const
{
if (isSystemTable(item->text()))
{
paintLabel(painter, option, index, item, tr("(system table)", "database tree label"));
return;
}
if (!CFG_UI.General.ShowRegularTableLabels.get())
return;
int columnsCount = item->child(0)->rowCount();
int indexesCount = item->child(1)->rowCount();
int triggersCount = item->child(2)->rowCount();
paintLabel(painter, option, index, item, QString("(%1, %2, %3)").arg(columnsCount).arg(indexesCount).arg(triggersCount));
}
void DbTreeItemDelegate::paintVirtualTableLabel(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index, DbTreeItem* item) const
{
if (!CFG_UI.General.ShowVirtualTableLabels.get())
return;
paintLabel(painter, option, index, item, tr("(virtual)", "virtual table label"));
}
void DbTreeItemDelegate::paintSystemIndexLabel(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index, DbTreeItem* item) const
{
Db* db = item->getDb();
if (!db || !db->isValid())
return;
if (!isSystemIndex(item->text()))
return;
paintLabel(painter, option, index, item, tr("(system index)", "database tree label"));
}
void DbTreeItemDelegate::paintLabel(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index, DbTreeItem *item, const QString &label) const
{
QStyleOptionViewItem opt = option;
initStyleOption(&opt, index);
painter->save();
// Colors
painter->setPen(QApplication::style()->standardPalette().link().color());
// Font
opt.font = CFG_UI.Fonts.DbTreeLabel.get();
opt.fontMetrics = QFontMetrics(opt.font);
painter->setFont(opt.font);
// Coords
int x = option.rect.x() + option.fontMetrics.horizontalAdvance(item->text()) + 15 + option.decorationSize.width();
int y = opt.rect.y() + (opt.rect.height() - opt.fontMetrics.descent() - opt.fontMetrics.ascent()) / 2 + opt.fontMetrics.ascent();
// Paint
painter->drawText(QPoint(x, y), label);
painter->restore();
}
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