974 lines
27 KiB
C++
974 lines
27 KiB
C++
/* Copyright 2013-2019 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "GroupView.h"
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#include <QPainter>
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#include <QApplication>
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#include <QtMath>
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#include <QMouseEvent>
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#include <QListView>
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#include <QPersistentModelIndex>
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#include <QDrag>
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#include <QMimeData>
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#include <QCache>
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#include <QScrollBar>
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#include "VisualGroup.h"
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#include <QDebug>
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template <typename T> bool listsIntersect(const QList<T> &l1, const QList<T> t2)
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{
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for (auto &item : l1)
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{
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if (t2.contains(item))
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{
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return true;
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}
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}
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return false;
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}
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GroupView::GroupView(QWidget *parent)
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: QAbstractItemView(parent)
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{
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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setAcceptDrops(true);
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setAutoScroll(true);
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}
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GroupView::~GroupView()
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{
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qDeleteAll(m_groups);
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m_groups.clear();
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}
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void GroupView::setModel(QAbstractItemModel *model)
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{
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QAbstractItemView::setModel(model);
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connect(model, &QAbstractItemModel::modelReset, this, &GroupView::modelReset);
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connect(model, &QAbstractItemModel::rowsRemoved, this, &GroupView::rowsRemoved);
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}
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void GroupView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight,
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const QVector<int> &roles)
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{
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scheduleDelayedItemsLayout();
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}
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void GroupView::rowsInserted(const QModelIndex &parent, int start, int end)
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{
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scheduleDelayedItemsLayout();
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}
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void GroupView::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
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{
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scheduleDelayedItemsLayout();
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}
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void GroupView::modelReset()
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{
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scheduleDelayedItemsLayout();
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}
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void GroupView::rowsRemoved()
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{
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scheduleDelayedItemsLayout();
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}
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class LocaleString : public QString
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{
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public:
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LocaleString(const char *s) : QString(s)
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{
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}
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LocaleString(const QString &s) : QString(s)
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{
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}
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};
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inline bool operator<(const LocaleString &lhs, const LocaleString &rhs)
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{
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return (QString::localeAwareCompare(lhs, rhs) < 0);
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}
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void GroupView::updateScrollbar()
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{
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int previousScroll = verticalScrollBar()->value();
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if (m_groups.isEmpty())
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{
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verticalScrollBar()->setRange(0, 0);
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}
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else
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{
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int totalHeight = 0;
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// top margin
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totalHeight += m_categoryMargin;
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int itemScroll = 0;
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for (auto category : m_groups)
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{
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category->m_verticalPosition = totalHeight;
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totalHeight += category->totalHeight() + m_categoryMargin;
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if(!itemScroll && category->totalHeight() != 0)
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{
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itemScroll = category->contentHeight() / category->numRows();
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}
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}
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// do not divide by zero
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if(itemScroll == 0)
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itemScroll = 64;
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totalHeight += m_bottomMargin;
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verticalScrollBar()->setSingleStep ( itemScroll );
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const int rowsPerPage = qMax ( viewport()->height() / itemScroll, 1 );
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verticalScrollBar()->setPageStep ( rowsPerPage * itemScroll );
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verticalScrollBar()->setRange(0, totalHeight - height());
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}
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verticalScrollBar()->setValue(qMin(previousScroll, verticalScrollBar()->maximum()));
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}
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void GroupView::updateGeometries()
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{
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geometryCache.clear();
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QMap<LocaleString, VisualGroup *> cats;
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for (int i = 0; i < model()->rowCount(); ++i)
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{
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const QString groupName = model()->index(i, 0).data(GroupViewRoles::GroupRole).toString();
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if (!cats.contains(groupName))
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{
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VisualGroup *old = this->category(groupName);
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if (old)
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{
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auto cat = new VisualGroup(old);
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cats.insert(groupName, cat);
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cat->update();
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}
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else
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{
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auto cat = new VisualGroup(groupName, this);
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cats.insert(groupName, cat);
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cat->update();
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}
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}
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}
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qDeleteAll(m_groups);
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m_groups = cats.values();
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updateScrollbar();
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viewport()->update();
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}
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bool GroupView::isIndexHidden(const QModelIndex &index) const
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{
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VisualGroup *cat = category(index);
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if (cat)
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{
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return cat->collapsed;
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}
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else
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{
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return false;
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}
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}
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VisualGroup *GroupView::category(const QModelIndex &index) const
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{
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return category(index.data(GroupViewRoles::GroupRole).toString());
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}
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VisualGroup *GroupView::category(const QString &cat) const
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{
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for (auto group : m_groups)
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{
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if (group->text == cat)
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{
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return group;
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}
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}
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return nullptr;
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}
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VisualGroup *GroupView::categoryAt(const QPoint &pos, VisualGroup::HitResults & result) const
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{
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for (auto group : m_groups)
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{
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result = group->hitScan(pos);
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if(result != VisualGroup::NoHit)
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{
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return group;
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}
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}
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result = VisualGroup::NoHit;
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return nullptr;
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}
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QString GroupView::groupNameAt(const QPoint &point)
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{
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VisualGroup::HitResults hitresult;
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auto group = categoryAt(point + offset(), hitresult);
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if(group && (hitresult & (VisualGroup::HeaderHit | VisualGroup::BodyHit)))
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{
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return group->text;
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}
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return QString();
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}
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int GroupView::calculateItemsPerRow() const
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{
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return qFloor((qreal)(contentWidth()) / (qreal)(itemWidth() + m_spacing));
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}
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int GroupView::contentWidth() const
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{
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return width() - m_leftMargin - m_rightMargin;
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}
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int GroupView::itemWidth() const
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{
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return m_itemWidth;
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}
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void GroupView::mousePressEvent(QMouseEvent *event)
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{
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// endCategoryEditor();
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QPoint visualPos = event->pos();
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QPoint geometryPos = event->pos() + offset();
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QPersistentModelIndex index = indexAt(visualPos);
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m_pressedIndex = index;
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m_pressedAlreadySelected = selectionModel()->isSelected(m_pressedIndex);
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m_pressedPosition = geometryPos;
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VisualGroup::HitResults hitresult;
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m_pressedCategory = categoryAt(geometryPos, hitresult);
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if (m_pressedCategory && hitresult & VisualGroup::CheckboxHit)
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{
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setState(m_pressedCategory->collapsed ? ExpandingState : CollapsingState);
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event->accept();
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return;
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}
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if (index.isValid() && (index.flags() & Qt::ItemIsEnabled))
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{
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if(index != currentIndex())
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{
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// FIXME: better!
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m_currentCursorColumn = -1;
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}
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// we disable scrollTo for mouse press so the item doesn't change position
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// when the user is interacting with it (ie. clicking on it)
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bool autoScroll = hasAutoScroll();
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setAutoScroll(false);
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selectionModel()->setCurrentIndex(index, QItemSelectionModel::NoUpdate);
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setAutoScroll(autoScroll);
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QRect rect(visualPos, visualPos);
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setSelection(rect, QItemSelectionModel::ClearAndSelect);
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// signal handlers may change the model
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emit pressed(index);
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}
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else
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{
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// Forces a finalize() even if mouse is pressed, but not on a item
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selectionModel()->select(QModelIndex(), QItemSelectionModel::Select);
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}
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}
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void GroupView::mouseMoveEvent(QMouseEvent *event)
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{
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QPoint topLeft;
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QPoint visualPos = event->pos();
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QPoint geometryPos = event->pos() + offset();
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if (state() == ExpandingState || state() == CollapsingState)
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{
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return;
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}
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if (state() == DraggingState)
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{
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topLeft = m_pressedPosition - offset();
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if ((topLeft - event->pos()).manhattanLength() > QApplication::startDragDistance())
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{
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m_pressedIndex = QModelIndex();
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startDrag(model()->supportedDragActions());
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setState(NoState);
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stopAutoScroll();
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}
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return;
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}
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if (selectionMode() != SingleSelection)
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{
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topLeft = m_pressedPosition - offset();
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}
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else
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{
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topLeft = geometryPos;
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}
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if (m_pressedIndex.isValid() && (state() != DragSelectingState) &&
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(event->buttons() != Qt::NoButton) && !selectedIndexes().isEmpty())
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{
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setState(DraggingState);
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return;
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}
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if ((event->buttons() & Qt::LeftButton) && selectionModel())
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{
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setState(DragSelectingState);
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setSelection(QRect(visualPos, visualPos), QItemSelectionModel::ClearAndSelect);
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QModelIndex index = indexAt(visualPos);
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// set at the end because it might scroll the view
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if (index.isValid() && (index != selectionModel()->currentIndex()) &&
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(index.flags() & Qt::ItemIsEnabled))
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{
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selectionModel()->setCurrentIndex(index, QItemSelectionModel::NoUpdate);
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}
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}
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}
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void GroupView::mouseReleaseEvent(QMouseEvent *event)
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{
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QPoint visualPos = event->pos();
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QPoint geometryPos = event->pos() + offset();
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QPersistentModelIndex index = indexAt(visualPos);
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VisualGroup::HitResults hitresult;
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bool click = (index == m_pressedIndex && index.isValid()) ||
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(m_pressedCategory && m_pressedCategory == categoryAt(geometryPos, hitresult));
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if (click && m_pressedCategory)
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{
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if (state() == ExpandingState)
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{
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m_pressedCategory->collapsed = false;
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updateGeometries();
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viewport()->update();
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event->accept();
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return;
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}
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else if (state() == CollapsingState)
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{
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m_pressedCategory->collapsed = true;
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updateGeometries();
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viewport()->update();
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event->accept();
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return;
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}
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}
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m_ctrlDragSelectionFlag = QItemSelectionModel::NoUpdate;
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setState(NoState);
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if (click)
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{
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if (event->button() == Qt::LeftButton)
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{
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emit clicked(index);
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}
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QStyleOptionViewItem option = viewOptions();
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if (m_pressedAlreadySelected)
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{
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option.state |= QStyle::State_Selected;
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}
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if ((model()->flags(index) & Qt::ItemIsEnabled) &&
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style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick, &option, this))
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{
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emit activated(index);
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}
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}
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}
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void GroupView::mouseDoubleClickEvent(QMouseEvent *event)
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{
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QModelIndex index = indexAt(event->pos());
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if (!index.isValid() || !(index.flags() & Qt::ItemIsEnabled) || (m_pressedIndex != index))
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{
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QMouseEvent me(QEvent::MouseButtonPress, event->localPos(), event->windowPos(),
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event->screenPos(), event->button(), event->buttons(),
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event->modifiers());
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mousePressEvent(&me);
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return;
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}
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// signal handlers may change the model
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QPersistentModelIndex persistent = index;
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emit doubleClicked(persistent);
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QStyleOptionViewItem option = viewOptions();
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if ((model()->flags(index) & Qt::ItemIsEnabled) && !style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick, &option, this))
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{
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emit activated(index);
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}
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}
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void GroupView::paintEvent(QPaintEvent *event)
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{
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executeDelayedItemsLayout();
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QPainter painter(this->viewport());
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QStyleOptionViewItem option(viewOptions());
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option.widget = this;
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int wpWidth = viewport()->width();
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option.rect.setWidth(wpWidth);
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for (int i = 0; i < m_groups.size(); ++i)
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{
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VisualGroup *category = m_groups.at(i);
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int y = category->verticalPosition();
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y -= verticalOffset();
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QRect backup = option.rect;
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int height = category->totalHeight();
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option.rect.setTop(y);
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option.rect.setHeight(height);
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option.rect.setLeft(m_leftMargin);
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option.rect.setRight(wpWidth - m_rightMargin);
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category->drawHeader(&painter, option);
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y += category->totalHeight() + m_categoryMargin;
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option.rect = backup;
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}
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for (int i = 0; i < model()->rowCount(); ++i)
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{
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const QModelIndex index = model()->index(i, 0);
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if (isIndexHidden(index))
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{
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continue;
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}
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Qt::ItemFlags flags = index.flags();
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option.rect = visualRect(index);
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option.features |= QStyleOptionViewItem::WrapText;
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if (flags & Qt::ItemIsSelectable && selectionModel()->isSelected(index))
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{
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option.state |= selectionModel()->isSelected(index) ? QStyle::State_Selected
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: QStyle::State_None;
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}
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else
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{
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option.state &= ~QStyle::State_Selected;
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}
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option.state |= (index == currentIndex()) ? QStyle::State_HasFocus : QStyle::State_None;
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if (!(flags & Qt::ItemIsEnabled))
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{
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option.state &= ~QStyle::State_Enabled;
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}
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itemDelegate()->paint(&painter, option, index);
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}
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/*
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* Drop indicators for manual reordering...
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*/
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#if 0
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if (!m_lastDragPosition.isNull())
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{
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QPair<Group *, int> pair = rowDropPos(m_lastDragPosition);
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Group *category = pair.first;
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int row = pair.second;
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if (category)
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{
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int internalRow = row - category->firstItemIndex;
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QLine line;
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if (internalRow >= category->numItems())
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{
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QRect toTheRightOfRect = visualRect(category->lastItem());
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line = QLine(toTheRightOfRect.topRight(), toTheRightOfRect.bottomRight());
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}
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else
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{
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QRect toTheLeftOfRect = visualRect(model()->index(row, 0));
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line = QLine(toTheLeftOfRect.topLeft(), toTheLeftOfRect.bottomLeft());
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}
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painter.save();
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painter.setPen(QPen(Qt::black, 3));
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painter.drawLine(line);
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painter.restore();
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}
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}
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#endif
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}
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void GroupView::resizeEvent(QResizeEvent *event)
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{
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int newItemsPerRow = calculateItemsPerRow();
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if(newItemsPerRow != m_currentItemsPerRow)
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{
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m_currentCursorColumn = -1;
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m_currentItemsPerRow = newItemsPerRow;
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updateGeometries();
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}
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else
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{
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updateScrollbar();
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}
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}
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void GroupView::dragEnterEvent(QDragEnterEvent *event)
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{
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if (!isDragEventAccepted(event))
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{
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return;
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}
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m_lastDragPosition = event->pos() + offset();
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viewport()->update();
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event->accept();
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}
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void GroupView::dragMoveEvent(QDragMoveEvent *event)
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{
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if (!isDragEventAccepted(event))
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{
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return;
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}
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m_lastDragPosition = event->pos() + offset();
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viewport()->update();
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event->accept();
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}
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void GroupView::dragLeaveEvent(QDragLeaveEvent *event)
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{
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m_lastDragPosition = QPoint();
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viewport()->update();
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}
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void GroupView::dropEvent(QDropEvent *event)
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{
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m_lastDragPosition = QPoint();
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stopAutoScroll();
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setState(NoState);
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if (event->source() == this)
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{
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if(event->possibleActions() & Qt::MoveAction)
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{
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QPair<VisualGroup *, int> dropPos = rowDropPos(event->pos() + offset());
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const VisualGroup *category = dropPos.first;
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const int row = dropPos.second;
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if (row == -1)
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{
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viewport()->update();
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return;
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}
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const QString categoryText = category->text;
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if (model()->dropMimeData(event->mimeData(), Qt::MoveAction, row, 0, QModelIndex()))
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{
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model()->setData(model()->index(row, 0), categoryText,
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GroupViewRoles::GroupRole);
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event->setDropAction(Qt::MoveAction);
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event->accept();
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}
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updateGeometries();
|
|
viewport()->update();
|
|
}
|
|
}
|
|
auto mimedata = event->mimeData();
|
|
|
|
// check if the action is supported
|
|
if (!mimedata)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// files dropped from outside?
|
|
if (mimedata->hasUrls())
|
|
{
|
|
auto urls = mimedata->urls();
|
|
event->accept();
|
|
emit droppedURLs(urls);
|
|
}
|
|
}
|
|
|
|
void GroupView::startDrag(Qt::DropActions supportedActions)
|
|
{
|
|
QModelIndexList indexes = selectionModel()->selectedIndexes();
|
|
if(indexes.count() == 0)
|
|
return;
|
|
|
|
QMimeData *data = model()->mimeData(indexes);
|
|
if (!data)
|
|
{
|
|
return;
|
|
}
|
|
QRect rect;
|
|
QPixmap pixmap = renderToPixmap(indexes, &rect);
|
|
//rect.translate(offset());
|
|
// rect.adjust(horizontalOffset(), verticalOffset(), 0, 0);
|
|
QDrag *drag = new QDrag(this);
|
|
drag->setPixmap(pixmap);
|
|
drag->setMimeData(data);
|
|
Qt::DropAction defaultDropAction = Qt::IgnoreAction;
|
|
if (this->defaultDropAction() != Qt::IgnoreAction &&
|
|
(supportedActions & this->defaultDropAction()))
|
|
{
|
|
defaultDropAction = this->defaultDropAction();
|
|
}
|
|
if (drag->exec(supportedActions, defaultDropAction) == Qt::MoveAction)
|
|
{
|
|
const QItemSelection selection = selectionModel()->selection();
|
|
|
|
for (auto it = selection.constBegin(); it != selection.constEnd(); ++it)
|
|
{
|
|
QModelIndex parent = (*it).parent();
|
|
if ((*it).left() != 0)
|
|
{
|
|
continue;
|
|
}
|
|
if ((*it).right() != (model()->columnCount(parent) - 1))
|
|
{
|
|
continue;
|
|
}
|
|
int count = (*it).bottom() - (*it).top() + 1;
|
|
model()->removeRows((*it).top(), count, parent);
|
|
}
|
|
}
|
|
}
|
|
|
|
QRect GroupView::visualRect(const QModelIndex &index) const
|
|
{
|
|
return geometryRect(index).translated(-offset());
|
|
}
|
|
|
|
QRect GroupView::geometryRect(const QModelIndex &index) const
|
|
{
|
|
if (!index.isValid() || isIndexHidden(index) || index.column() > 0)
|
|
{
|
|
return QRect();
|
|
}
|
|
|
|
int row = index.row();
|
|
if(geometryCache.contains(row))
|
|
{
|
|
return *geometryCache[row];
|
|
}
|
|
|
|
const VisualGroup *cat = category(index);
|
|
QPair<int, int> pos = cat->positionOf(index);
|
|
int x = pos.first;
|
|
// int y = pos.second;
|
|
|
|
QRect out;
|
|
out.setTop(cat->verticalPosition() + cat->headerHeight() + 5 + cat->rowTopOf(index));
|
|
out.setLeft(m_spacing + x * (itemWidth() + m_spacing));
|
|
out.setSize(itemDelegate()->sizeHint(viewOptions(), index));
|
|
geometryCache.insert(row, new QRect(out));
|
|
return out;
|
|
}
|
|
|
|
QModelIndex GroupView::indexAt(const QPoint &point) const
|
|
{
|
|
const_cast<GroupView*>(this)->executeDelayedItemsLayout();
|
|
|
|
for (int i = 0; i < model()->rowCount(); ++i)
|
|
{
|
|
QModelIndex index = model()->index(i, 0);
|
|
if (visualRect(index).contains(point))
|
|
{
|
|
return index;
|
|
}
|
|
}
|
|
return QModelIndex();
|
|
}
|
|
|
|
void GroupView::setSelection(const QRect &rect,
|
|
const QItemSelectionModel::SelectionFlags commands)
|
|
{
|
|
for (int i = 0; i < model()->rowCount(); ++i)
|
|
{
|
|
QModelIndex index = model()->index(i, 0);
|
|
QRect itemRect = visualRect(index);
|
|
if (itemRect.intersects(rect))
|
|
{
|
|
selectionModel()->select(index, commands);
|
|
update(itemRect.translated(-offset()));
|
|
}
|
|
}
|
|
}
|
|
|
|
QPixmap GroupView::renderToPixmap(const QModelIndexList &indices, QRect *r) const
|
|
{
|
|
Q_ASSERT(r);
|
|
auto paintPairs = draggablePaintPairs(indices, r);
|
|
if (paintPairs.isEmpty())
|
|
{
|
|
return QPixmap();
|
|
}
|
|
QPixmap pixmap(r->size());
|
|
pixmap.fill(Qt::transparent);
|
|
QPainter painter(&pixmap);
|
|
QStyleOptionViewItem option = viewOptions();
|
|
option.state |= QStyle::State_Selected;
|
|
for (int j = 0; j < paintPairs.count(); ++j)
|
|
{
|
|
option.rect = paintPairs.at(j).first.translated(-r->topLeft());
|
|
const QModelIndex ¤t = paintPairs.at(j).second;
|
|
itemDelegate()->paint(&painter, option, current);
|
|
}
|
|
return pixmap;
|
|
}
|
|
|
|
QList<QPair<QRect, QModelIndex>> GroupView::draggablePaintPairs(const QModelIndexList &indices,
|
|
QRect *r) const
|
|
{
|
|
Q_ASSERT(r);
|
|
QRect &rect = *r;
|
|
QList<QPair<QRect, QModelIndex>> ret;
|
|
for (int i = 0; i < indices.count(); ++i)
|
|
{
|
|
const QModelIndex &index = indices.at(i);
|
|
const QRect current = geometryRect(index);
|
|
ret += qMakePair(current, index);
|
|
rect |= current;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
bool GroupView::isDragEventAccepted(QDropEvent *event)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
QPair<VisualGroup *, int> GroupView::rowDropPos(const QPoint &pos)
|
|
{
|
|
return qMakePair<VisualGroup*, int>(nullptr, -1);
|
|
}
|
|
|
|
QPoint GroupView::offset() const
|
|
{
|
|
return QPoint(horizontalOffset(), verticalOffset());
|
|
}
|
|
|
|
QRegion GroupView::visualRegionForSelection(const QItemSelection &selection) const
|
|
{
|
|
QRegion region;
|
|
for (auto &range : selection)
|
|
{
|
|
int start_row = range.top();
|
|
int end_row = range.bottom();
|
|
for (int row = start_row; row <= end_row; ++row)
|
|
{
|
|
int start_column = range.left();
|
|
int end_column = range.right();
|
|
for (int column = start_column; column <= end_column; ++column)
|
|
{
|
|
QModelIndex index = model()->index(row, column, rootIndex());
|
|
region += visualRect(index); // OK
|
|
}
|
|
}
|
|
}
|
|
return region;
|
|
}
|
|
|
|
QModelIndex GroupView::moveCursor(QAbstractItemView::CursorAction cursorAction,
|
|
Qt::KeyboardModifiers modifiers)
|
|
{
|
|
auto current = currentIndex();
|
|
if(!current.isValid())
|
|
{
|
|
return current;
|
|
}
|
|
auto cat = category(current);
|
|
int group_index = m_groups.indexOf(cat);
|
|
if(group_index < 0)
|
|
return current;
|
|
|
|
auto real_group = m_groups[group_index];
|
|
int beginning_row = 0;
|
|
for(auto group: m_groups)
|
|
{
|
|
if(group == real_group)
|
|
break;
|
|
beginning_row += group->numRows();
|
|
}
|
|
|
|
QPair<int, int> pos = cat->positionOf(current);
|
|
int column = pos.first;
|
|
int row = pos.second;
|
|
if(m_currentCursorColumn < 0)
|
|
{
|
|
m_currentCursorColumn = column;
|
|
}
|
|
switch(cursorAction)
|
|
{
|
|
case MoveUp:
|
|
{
|
|
if(row == 0)
|
|
{
|
|
int prevgroupindex = group_index-1;
|
|
while(prevgroupindex >= 0)
|
|
{
|
|
auto prevgroup = m_groups[prevgroupindex];
|
|
if(prevgroup->collapsed)
|
|
{
|
|
prevgroupindex--;
|
|
continue;
|
|
}
|
|
int newRow = prevgroup->numRows() - 1;
|
|
int newRowSize = prevgroup->rows[newRow].size();
|
|
int newColumn = m_currentCursorColumn;
|
|
if (m_currentCursorColumn >= newRowSize)
|
|
{
|
|
newColumn = newRowSize - 1;
|
|
}
|
|
return prevgroup->rows[newRow][newColumn];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int newRow = row - 1;
|
|
int newRowSize = cat->rows[newRow].size();
|
|
int newColumn = m_currentCursorColumn;
|
|
if (m_currentCursorColumn >= newRowSize)
|
|
{
|
|
newColumn = newRowSize - 1;
|
|
}
|
|
return cat->rows[newRow][newColumn];
|
|
}
|
|
return current;
|
|
}
|
|
case MoveDown:
|
|
{
|
|
if(row == cat->rows.size() - 1)
|
|
{
|
|
int nextgroupindex = group_index+1;
|
|
while (nextgroupindex < m_groups.size())
|
|
{
|
|
auto nextgroup = m_groups[nextgroupindex];
|
|
if(nextgroup->collapsed)
|
|
{
|
|
nextgroupindex++;
|
|
continue;
|
|
}
|
|
int newRowSize = nextgroup->rows[0].size();
|
|
int newColumn = m_currentCursorColumn;
|
|
if (m_currentCursorColumn >= newRowSize)
|
|
{
|
|
newColumn = newRowSize - 1;
|
|
}
|
|
return nextgroup->rows[0][newColumn];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int newRow = row + 1;
|
|
int newRowSize = cat->rows[newRow].size();
|
|
int newColumn = m_currentCursorColumn;
|
|
if (m_currentCursorColumn >= newRowSize)
|
|
{
|
|
newColumn = newRowSize - 1;
|
|
}
|
|
return cat->rows[newRow][newColumn];
|
|
}
|
|
return current;
|
|
}
|
|
case MoveLeft:
|
|
{
|
|
if(column > 0)
|
|
{
|
|
m_currentCursorColumn = column - 1;
|
|
return cat->rows[row][column - 1];
|
|
}
|
|
// TODO: moving to previous line
|
|
return current;
|
|
}
|
|
case MoveRight:
|
|
{
|
|
if(column < cat->rows[row].size() - 1)
|
|
{
|
|
m_currentCursorColumn = column + 1;
|
|
return cat->rows[row][column + 1];
|
|
}
|
|
// TODO: moving to next line
|
|
return current;
|
|
}
|
|
case MoveHome:
|
|
{
|
|
m_currentCursorColumn = 0;
|
|
return cat->rows[row][0];
|
|
}
|
|
case MoveEnd:
|
|
{
|
|
auto last = cat->rows[row].size() - 1;
|
|
m_currentCursorColumn = last;
|
|
return cat->rows[row][last];
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return current;
|
|
}
|
|
|
|
int GroupView::horizontalOffset() const
|
|
{
|
|
return horizontalScrollBar()->value();
|
|
}
|
|
|
|
int GroupView::verticalOffset() const
|
|
{
|
|
return verticalScrollBar()->value();
|
|
}
|
|
|
|
void GroupView::scrollContentsBy(int dx, int dy)
|
|
{
|
|
scrollDirtyRegion(dx, dy);
|
|
viewport()->scroll(dx, dy);
|
|
}
|
|
|
|
void GroupView::scrollTo(const QModelIndex &index, ScrollHint hint)
|
|
{
|
|
if (!index.isValid())
|
|
return;
|
|
|
|
const QRect rect = visualRect(index);
|
|
if (hint == EnsureVisible && viewport()->rect().contains(rect))
|
|
{
|
|
viewport()->update(rect);
|
|
return;
|
|
}
|
|
|
|
verticalScrollBar()->setValue(verticalScrollToValue(index, rect, hint));
|
|
}
|
|
|
|
int GroupView::verticalScrollToValue(const QModelIndex &index, const QRect &rect,
|
|
QListView::ScrollHint hint) const
|
|
{
|
|
const QRect area = viewport()->rect();
|
|
const bool above = (hint == QListView::EnsureVisible && rect.top() < area.top());
|
|
const bool below = (hint == QListView::EnsureVisible && rect.bottom() > area.bottom());
|
|
|
|
int verticalValue = verticalScrollBar()->value();
|
|
QRect adjusted = rect.adjusted(-spacing(), -spacing(), spacing(), spacing());
|
|
if (hint == QListView::PositionAtTop || above)
|
|
verticalValue += adjusted.top();
|
|
else if (hint == QListView::PositionAtBottom || below)
|
|
verticalValue += qMin(adjusted.top(), adjusted.bottom() - area.height() + 1);
|
|
else if (hint == QListView::PositionAtCenter)
|
|
verticalValue += adjusted.top() - ((area.height() - adjusted.height()) / 2);
|
|
return verticalValue;
|
|
}
|