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/*
This file is part of the KTextTemplate library
SPDX-FileCopyrightText: 2010 Stephen Kelly <steveire@gmail.com>
SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "comboboxdelegate.h"
#include "comboboxdelegate_p.h"
#include <QApplication>
#include <QDebug>
ComboBoxEditorCreator::ComboBoxEditorCreator(const QStringList &data, ComboBoxDelegate::Type type)
: QItemEditorCreatorBase()
, m_data(data)
, m_type(type)
{
}
ComboBoxEditorCreator::~ComboBoxEditorCreator()
{
}
QWidget *ComboBoxEditorCreator::createWidget(QWidget *parent) const
{
ViewComboBox *vcb = new ViewComboBox(parent);
vcb->addItems(m_data);
if (m_type == ComboBoxDelegate::Editable)
vcb->setEditable(true);
return vcb;
}
QByteArray ComboBoxEditorCreator::valuePropertyName() const
{
return QByteArray("choice");
}
ViewComboBox::ViewComboBox(QWidget *parent)
: QComboBox(parent)
{
}
QString ViewComboBox::choice() const
{
return currentText();
}
void ViewComboBox::setChoice(const QString &choice)
{
const int index = findData(choice, Qt::DisplayRole, Qt::MatchFixedString);
if (index >= 0)
setCurrentIndex(index);
else
setEditText(choice);
}
ComboBoxDelegate::ComboBoxDelegate(const QStringList &data, Type type, QObject *parent)
: QItemDelegate(parent)
{
QItemEditorFactory *factory = new QItemEditorFactory;
QItemEditorCreatorBase *creator = new ComboBoxEditorCreator(data, type);
factory->registerEditor(QMetaType::QString, creator);
setItemEditorFactory(factory);
}
QWidget *ComboBoxDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QWidget *w = QItemDelegate::createEditor(parent, option, index);
ViewComboBox *viewComboBox = qobject_cast<ViewComboBox *>(w);
Q_ASSERT(viewComboBox);
return viewComboBox;
}
static QSize textSize(const QFont &font, const QString &text)
{
QFontMetrics fm(font);
QSize size = fm.size(Qt::TextSingleLine, text);
const int textMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameHMargin) + 1;
return QSize(size.width() + 2 * textMargin, size.height());
}
QSize ComboBoxDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
if (m_sizes.contains(index.row())) {
return m_sizes.value(index.row());
}
QSize sz;
QVariant fontData = index.data(Qt::FontRole);
QFont fnt = qvariant_cast<QFont>(fontData).resolve(option.font);
for (int i = 0; i < sizeof sTypes / sizeof *sTypes; ++i) {
QString text = *(sTypes + i);
QSize s = textSize(fnt, text);
sz = sz.expandedTo(s);
}
QStyleOptionComboBox opt;
opt.editable = true;
opt.frame = true;
opt.currentText = index.data().toString();
sz = qApp->style()->sizeFromContents(QStyle::CT_ComboBox, &opt, sz);
m_sizes.insert(index.row(), sz);
return sz;
}
#include "moc_comboboxdelegate.cpp"
#include "moc_comboboxdelegate_p.cpp"
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