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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "sheet_delegate_p.h"
#include <QtCore/qabstractitemmodel.h>
#include <QtWidgets/qtreeview.h>
#include <QtWidgets/qstyle.h>
#include <QtGui/qpainter.h>
QT_BEGIN_NAMESPACE
namespace qdesigner_internal {
SheetDelegate::SheetDelegate(QTreeView *view, QWidget *parent)
: QItemDelegate(parent),
m_view(view)
{
}
void SheetDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
const QAbstractItemModel *model = index.model();
Q_ASSERT(model);
if (!model->parent(index).isValid()) {
// this is a top-level item.
QStyleOptionButton buttonOption;
buttonOption.state = option.state;
#ifdef Q_OS_MACOS
buttonOption.state |= QStyle::State_Raised;
#endif
buttonOption.state &= ~QStyle::State_HasFocus;
buttonOption.rect = option.rect;
buttonOption.palette = option.palette;
buttonOption.features = QStyleOptionButton::None;
painter->save();
QColor buttonColor(230, 230, 230);
QBrush buttonBrush = option.palette.button();
if (!buttonBrush.gradient() && buttonBrush.texture().isNull())
buttonColor = buttonBrush.color();
QColor outlineColor = buttonColor.darker(150);
QColor highlightColor = buttonColor.lighter(130);
// Only draw topline if the previous item is expanded
QModelIndex previousIndex = model->index(index.row() - 1, index.column());
bool drawTopline = (index.row() > 0 && m_view->isExpanded(previousIndex));
int highlightOffset = drawTopline ? 1 : 0;
QLinearGradient gradient(option.rect.topLeft(), option.rect.bottomLeft());
gradient.setColorAt(0, buttonColor.lighter(102));
gradient.setColorAt(1, buttonColor.darker(106));
painter->setPen(Qt::NoPen);
painter->setBrush(gradient);
painter->drawRect(option.rect);
painter->setPen(highlightColor);
painter->drawLine(option.rect.topLeft() + QPoint(0, highlightOffset),
option.rect.topRight() + QPoint(0, highlightOffset));
painter->setPen(outlineColor);
if (drawTopline)
painter->drawLine(option.rect.topLeft(), option.rect.topRight());
painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
painter->restore();
QStyleOption branchOption;
static const int i = 9; // ### hardcoded in qcommonstyle.cpp
QRect r = option.rect;
branchOption.rect = QRect(r.left() + i/2, r.top() + (r.height() - i)/2, i, i);
branchOption.palette = option.palette;
branchOption.state = QStyle::State_Children;
if (m_view->isExpanded(index))
branchOption.state |= QStyle::State_Open;
m_view->style()->drawPrimitive(QStyle::PE_IndicatorBranch, &branchOption, painter, m_view);
// draw text
QRect textrect = QRect(r.left() + i*2, r.top(), r.width() - ((5*i)/2), r.height());
QString text = option.fontMetrics.elidedText(model->data(index, Qt::DisplayRole).toString(),
Qt::ElideMiddle,
textrect.width());
m_view->style()->drawItemText(painter, textrect, Qt::AlignCenter,
option.palette, m_view->isEnabled(), text);
} else {
QItemDelegate::paint(painter, option, index);
}
}
QSize SheetDelegate::sizeHint(const QStyleOptionViewItem &opt, const QModelIndex &index) const
{
QSize sz = QItemDelegate::sizeHint(opt, index) + QSize(2, 2);
return sz;
}
} // namespace qdesigner_internal
QT_END_NAMESPACE
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