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/* This file is part of KDevelop
Copyright 2013 Aleix Pol <aleixpol@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "projectmodelitemdelegate.h"
#include "vcsoverlayproxymodel.h"
#include <debug.h>
#include <project/projectmodel.h>
#include <language/duchain/duchainutils.h>
#include <language/duchain/duchainlock.h>
#include <language/duchain/duchain.h>
#include <language/util/navigationtooltip.h>
#include <util/path.h>
#include <QHelpEvent>
#include <QToolTip>
#include <QAbstractItemView>
#include <QPainter>
using namespace KDevelop;
ProjectModelItemDelegate::ProjectModelItemDelegate(QObject* parent)
: QItemDelegate(parent)
{}
static QIcon::Mode IconMode( QStyle::State state )
{
if (!(state & QStyle::State_Enabled)) {
return QIcon::Disabled;
} else if (state & QStyle::State_Selected) {
return QIcon::Selected;
} else {
return QIcon::Normal;
}
}
static QIcon::State IconState(QStyle::State state)
{
return (state & QStyle::State_Open) ? QIcon::On : QIcon::Off;
}
void ProjectModelItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& opt, const QModelIndex& index) const
{
// Qt5.5 HiDPI Fix part (1/2)
// This fix is based on how Qt5.5's QItemDelegate::paint implementation deals with the same issue
// Unfortunately, there doesn't seem to be a clean way to use the base implementation
// and have the added functionality this class provides
QPixmap decoData;
QRect decorationRect;
QIcon icon;
QIcon::Mode mode = QIcon::Mode::Disabled;
QIcon::State state = QIcon::State::Off;
{
QVariant value;
value = index.data(Qt::DecorationRole);
if (value.isValid()) {
decoData = decoration(opt, value);
if (value.type() == QVariant::Icon) {
icon = qvariant_cast<QIcon>(value);
mode = IconMode(opt.state);
state = IconState(opt.state);
QSize size = icon.actualSize( opt.decorationSize, mode, state );
if (size.isEmpty()) {
// For items with an empty icon, set size to opt.decorationSize to make them have the same indent as items with a valid icon
size = opt.decorationSize;
}
decorationRect = QRect(QPoint(0, 0), size);
} else {
decorationRect = QRect(QPoint(0, 0), decoData.size());
}
} else {
decorationRect = QRect();
}
}
QRect checkRect; //unused in practice
QRect spaceLeft = opt.rect;
spaceLeft.setLeft(decorationRect.right());
QString displayData = index.data(Qt::DisplayRole).toString();
QRect displayRect = textRectangle(painter, spaceLeft, opt.font, displayData);
displayRect.setLeft(spaceLeft.left());
QRect branchNameRect(displayRect.topRight(), opt.rect.bottomRight());
doLayout(opt, &checkRect, &decorationRect, &displayRect, false);
branchNameRect.setLeft(branchNameRect.left() + displayRect.left());
branchNameRect.setTop(displayRect.top());
drawStyledBackground(painter, opt);
// drawCheck(painter, opt, checkRect, checkState);
// Qt5.5 HiDPI Fix part (2/2)
// use the QIcon from above if possible
if (!icon.isNull()) {
icon.paint(painter, decorationRect, opt.decorationAlignment, mode, state );
} else {
drawDecoration(painter, opt, decorationRect, decoData);
}
drawDisplay(painter, opt, displayRect, displayData);
/// FIXME: this can apparently trigger a nested eventloop, see
/// https://bugs.kde.org/show_bug.cgi?id=355099
QString branchNameData = index.data(VcsOverlayProxyModel::VcsStatusRole).toString();
drawBranchName(painter, opt, branchNameRect, branchNameData);
drawFocus(painter, opt, displayRect);
}
void ProjectModelItemDelegate::drawBranchName(QPainter* painter, const QStyleOptionViewItem& option,
const QRect& rect, const QString& branchName) const
{
QString text = option.fontMetrics.elidedText(branchName, Qt::ElideRight, rect.width());
bool selected = option.state & QStyle::State_Selected;
QPalette::ColorGroup colorGroup = selected ? QPalette::Active : QPalette::Disabled;
painter->save();
painter->setPen(option.palette.color(colorGroup, QPalette::Text));
painter->drawText(rect, text);
painter->restore();
}
void ProjectModelItemDelegate::drawStyledBackground(QPainter* painter, const QStyleOptionViewItem& option) const
{
QStyleOptionViewItem opt(option);
QStyle *style = opt.widget->style();
style->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter, opt.widget);
}
void ProjectModelItemDelegate::drawDisplay(QPainter* painter, const QStyleOptionViewItem& option,
const QRect& rect, const QString& text) const
{
QPalette::ColorGroup cg = (option.state & QStyle::State_Enabled)
? QPalette::Normal : QPalette::Disabled;
if (option.state & QStyle::State_Editing) {
painter->save();
painter->setPen(option.palette.color(cg, QPalette::Text));
painter->drawRect(rect.adjusted(0, 0, -1, -1));
painter->restore();
}
if(text.isEmpty()) {
return;
}
if (cg == QPalette::Normal && !(option.state & QStyle::State_Active)) {
cg = QPalette::Inactive;
}
if (option.state & QStyle::State_Selected) {
painter->setPen(option.palette.color(cg, QPalette::HighlightedText));
} else {
painter->setPen(option.palette.color(cg, QPalette::Text));
}
QFontMetrics fm(painter->fontMetrics());
painter->drawText(rect, fm.elidedText(text, Qt::ElideRight, rect.width()));
}
bool ProjectModelItemDelegate::helpEvent(QHelpEvent* event,
QAbstractItemView* view, const QStyleOptionViewItem& option,
const QModelIndex& index)
{
if (!event || !view) {
return false;
}
if (event->type() == QEvent::ToolTip) {
// explicitly close current tooltip, as its autoclose margins overlap items
if ((m_tooltippedIndex != index) && m_tooltip) {
m_tooltip->close();
m_tooltip.clear();
}
const ProjectBaseItem* it = index.data(ProjectModel::ProjectItemRole).value<ProjectBaseItem*>();
// show navigation tooltip for files
if (it && it->file()) {
if (!m_tooltip) {
m_tooltippedIndex = index;
KDevelop::DUChainReadLocker lock(KDevelop::DUChain::lock());
const TopDUContext* top = DUChainUtils::standardContextForUrl(it->file()->path().toUrl());
if (top) {
if (auto* navigationWidget = top->createNavigationWidget()) {
// force possible existing normal tooltip for other list item to hide
// Seems that is still only done with a small delay though,
// but the API seems not to allow more control.
QToolTip::hideText();
m_tooltip = new KDevelop::NavigationToolTip(view, event->globalPos() + QPoint(40, 0), navigationWidget);
m_tooltip->resize(navigationWidget->sizeHint() + QSize(10, 10));
auto rect = view->visualRect(m_tooltippedIndex);
rect.moveTopLeft(view->mapToGlobal(rect.topLeft()));
m_tooltip->setHandleRect(rect);
ActiveToolTip::showToolTip(m_tooltip);
}
}
}
// tooltip successfully handled by us?
if (m_tooltip) {
return true;
}
}
}
return QItemDelegate::helpEvent(event, view, option, index);
}
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