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/*
quickitemdelegate.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2014 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Anton Kreuzkamp <anton.kreuzkamp@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include "quickitemdelegate.h"
#include "quickitemmodelroles.h"
#include <ui/uiresources.h>
#include <QPainter>
#include <QIcon>
#include <QVariant>
#include <QAbstractItemView>
#include <QApplication>
using namespace GammaRay;
QuickItemDelegate::QuickItemDelegate(QAbstractItemView *view)
: QStyledItemDelegate(view)
, m_view(view)
{
}
void QuickItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
painter->save();
int flags = index.data(QuickItemModelRole::ItemFlags).value<int>();
QStyleOptionViewItem opt = option;
initStyleOption(&opt, index);
// Disable foreground painting so we can do ourself
opt.text.clear();
opt.icon = QIcon();
QApplication::style()->drawControl(QStyle::CE_ItemViewItem, &opt, painter);
QRect drawRect = option.rect;
painter->setClipRect(option.rect);
painter->setClipping(true); // avoid the icons leaking into the next column
const auto foregroundData = index.data(Qt::ForegroundRole);
const auto inactiveColor = foregroundData.isNull() ? option.palette.text().color() : foregroundData.value<QColor>();
const auto base = option.state
& QStyle::State_Selected
? option.palette.highlightedText().color()
: inactiveColor;
if (m_colors.contains(index.sibling(index.row(), 0))) {
QColor blend = m_colors.value(index.sibling(index.row(), 0));
QColor blended = QColor::fromRgbF(
base.redF() * (1 - blend.alphaF()) + blend.redF() * blend.alphaF(),
base.greenF() * (1 - blend.alphaF()) + blend.greenF() * blend.alphaF(),
base.blueF() * (1 - blend.alphaF()) + blend.blueF() * blend.alphaF());
painter->setPen(blended);
} else {
painter->setPen(base);
}
if (index.column() == 0) {
auto deco = index.data(Qt::DecorationRole);
QVector<QPixmap> icons;
if (deco.canConvert<QPixmap>())
icons.push_back(deco.value<QPixmap>());
else if (deco.canConvert<QIcon>())
icons.push_back(deco.value<QIcon>().pixmap(16, 16));
if ((flags & QuickItemModelRole::PartiallyOutOfView) && (~flags & QuickItemModelRole::Invisible))
icons << UIResources::themedIcon(QStringLiteral("warning.png")).pixmap(16, 16);
if (flags & QuickItemModelRole::HasActiveFocus)
icons << UIResources::themedIcon(QStringLiteral("active-focus.png")).pixmap(16, 16);
if (flags & QuickItemModelRole::HasFocus && ~flags & QuickItemModelRole::HasActiveFocus)
icons << UIResources::themedIcon(QStringLiteral("focus.png")).pixmap(16, 16);
for (int i = 0; i < icons.size() && drawRect.left() < opt.rect.right(); i++) {
painter->drawPixmap(drawRect.topLeft(), icons.at(i));
drawRect.setTopLeft(drawRect.topLeft() + QPoint(20, 0));
}
}
painter->drawText(drawRect, Qt::AlignVCenter, index.data(Qt::DisplayRole).toString());
painter->restore();
}
QSize QuickItemDelegate::sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
Q_UNUSED(option);
// this gets us the cached value for empty cells
const auto sh = index.data(Qt::SizeHintRole);
if (sh.isValid())
return sh.toSize();
QSize textSize = m_view->fontMetrics().size(Qt::TextSingleLine, index.data(Qt::DisplayRole).toString());
QSize decorationSize;
if (index.column() == 0) {
int flags = index.data(QuickItemModelRole::ItemFlags).value<int>();
int icons = 1;
if ((flags & QuickItemModelRole::OutOfView) && (~flags & QuickItemModelRole::Invisible))
icons++;
if (flags & (QuickItemModelRole::HasFocus | QuickItemModelRole::HasActiveFocus))
icons++;
decorationSize = QSize(icons * 20, 16);
}
return { textSize.width() + decorationSize.width() + 5,
qMax(textSize.height(), decorationSize.height()) };
}
void QuickItemDelegate::setTextColor(const QVariant &textColor, const QPersistentModelIndex &index)
{
if (!index.isValid())
return;
m_colors[index] = textColor.value<QColor>();
for (int i = 0; i < m_view->model()->columnCount(); i++)
m_view->update(index.sibling(index.row(), i));
}
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