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366 lines
12 KiB
C++
366 lines
12 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QHEADERVIEW_P_H
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#define QHEADERVIEW_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include "qabstractitemview_p.h"
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#ifndef QT_NO_ITEMVIEWS
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#include "QtCore/qbitarray.h"
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#include "QtGui/qapplication.h"
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#include "QtGui/qlabel.h"
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QT_BEGIN_NAMESPACE
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class QHeaderViewPrivate: public QAbstractItemViewPrivate
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{
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Q_DECLARE_PUBLIC(QHeaderView)
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public:
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enum StateVersion { VersionMarker = 0xff };
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QHeaderViewPrivate()
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: state(NoState),
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offset(0),
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sortIndicatorOrder(Qt::DescendingOrder),
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sortIndicatorSection(0),
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sortIndicatorShown(false),
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lastPos(-1),
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firstPos(-1),
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originalSize(-1),
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section(-1),
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target(-1),
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pressed(-1),
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hover(-1),
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length(0),
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sectionCount(0),
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movableSections(false),
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clickableSections(false),
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highlightSelected(false),
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stretchLastSection(false),
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cascadingResizing(false),
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resizeRecursionBlock(false),
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stretchSections(0),
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contentsSections(0),
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minimumSectionSize(-1),
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lastSectionSize(0),
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sectionIndicatorOffset(0),
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sectionIndicator(0),
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globalResizeMode(QHeaderView::Interactive)
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{}
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int lastVisibleVisualIndex() const;
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int sectionHandleAt(int position);
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void setupSectionIndicator(int section, int position);
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void updateSectionIndicator(int section, int position);
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void updateHiddenSections(int logicalFirst, int logicalLast);
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void resizeSections(QHeaderView::ResizeMode globalMode, bool useGlobalMode = false);
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void _q_sectionsRemoved(const QModelIndex &,int,int);
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void _q_layoutAboutToBeChanged();
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void _q_layoutChanged();
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bool isSectionSelected(int section) const;
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inline bool rowIntersectsSelection(int row) const {
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return (selectionModel ? selectionModel->rowIntersectsSelection(row, root) : false);
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}
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inline bool columnIntersectsSelection(int column) const {
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return (selectionModel ? selectionModel->columnIntersectsSelection(column, root) : false);
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}
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inline bool sectionIntersectsSelection(int logical) const {
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return (orientation == Qt::Horizontal ? columnIntersectsSelection(logical) : rowIntersectsSelection(logical));
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}
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inline bool isRowSelected(int row) const {
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return (selectionModel ? selectionModel->isRowSelected(row, root) : false);
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}
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inline bool isColumnSelected(int column) const {
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return (selectionModel ? selectionModel->isColumnSelected(column, root) : false);
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}
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inline void prepareSectionSelected() {
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if (!selectionModel || !selectionModel->hasSelection())
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sectionSelected.clear();
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else if (sectionSelected.count() != sectionCount * 2)
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sectionSelected.fill(false, sectionCount * 2);
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else sectionSelected.fill(false);
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}
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inline bool reverse() const {
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return orientation == Qt::Horizontal && q_func()->isRightToLeft();
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}
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inline int logicalIndex(int visualIndex) const {
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return logicalIndices.isEmpty() ? visualIndex : logicalIndices.at(visualIndex);
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}
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inline int visualIndex(int logicalIndex) const {
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return visualIndices.isEmpty() ? logicalIndex : visualIndices.at(logicalIndex);
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}
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inline void setDefaultValues(Qt::Orientation o) {
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orientation = o;
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defaultSectionSize = (o == Qt::Horizontal ? 100
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: qMax(q_func()->minimumSectionSize(), 30));
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defaultAlignment = (o == Qt::Horizontal
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? Qt::Alignment(Qt::AlignCenter)
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: Qt::AlignLeft|Qt::AlignVCenter);
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}
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inline bool isVisualIndexHidden(int visual) const {
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return !sectionHidden.isEmpty() && sectionHidden.at(visual);
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}
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inline void setVisualIndexHidden(int visual, bool hidden) {
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if (!sectionHidden.isEmpty()) sectionHidden.setBit(visual, hidden);
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}
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inline bool hasAutoResizeSections() const {
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return stretchSections || stretchLastSection || contentsSections;
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}
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QStyleOptionHeader getStyleOption() const;
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inline void invalidateCachedSizeHint() const {
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cachedSizeHint = QSize();
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}
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inline void initializeIndexMapping() const {
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if (visualIndices.count() != sectionCount
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|| logicalIndices.count() != sectionCount) {
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visualIndices.resize(sectionCount);
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logicalIndices.resize(sectionCount);
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for (int s = 0; s < sectionCount; ++s) {
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visualIndices[s] = s;
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logicalIndices[s] = s;
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}
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}
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}
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inline void clearCascadingSections() {
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firstCascadingSection = sectionCount;
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lastCascadingSection = 0;
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cascadingSectionSize.clear();
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}
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inline void saveCascadingSectionSize(int visual, int size) {
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if (!cascadingSectionSize.contains(visual)) {
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cascadingSectionSize.insert(visual, size);
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firstCascadingSection = qMin(firstCascadingSection, visual);
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lastCascadingSection = qMax(lastCascadingSection, visual);
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}
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}
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inline bool sectionIsCascadable(int visual) const {
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return headerSectionResizeMode(visual) == QHeaderView::Interactive;
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}
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inline int modelSectionCount() const {
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return (orientation == Qt::Horizontal
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? model->columnCount(root)
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: model->rowCount(root));
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}
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inline bool modelIsEmpty() const {
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return (model->rowCount(root) == 0 || model->columnCount(root) == 0);
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}
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inline void doDelayedResizeSections() {
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if (!delayedResize.isActive())
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delayedResize.start(0, q_func());
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}
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inline void executePostedResize() const {
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if (delayedResize.isActive() && state == NoState) {
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const_cast<QHeaderView*>(q_func())->resizeSections();
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}
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}
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void clear();
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void flipSortIndicator(int section);
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void cascadingResize(int visual, int newSize);
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enum State { NoState, ResizeSection, MoveSection, SelectSections, NoClear } state;
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int offset;
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Qt::Orientation orientation;
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Qt::SortOrder sortIndicatorOrder;
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int sortIndicatorSection;
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bool sortIndicatorShown;
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mutable QVector<int> visualIndices; // visualIndex = visualIndices.at(logicalIndex)
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mutable QVector<int> logicalIndices; // logicalIndex = row or column in the model
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mutable QBitArray sectionSelected; // from logical index to bit
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mutable QBitArray sectionHidden; // from visual index to bit
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mutable QHash<int, int> hiddenSectionSize; // from logical index to section size
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mutable QHash<int, int> cascadingSectionSize; // from visual index to section size
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mutable QSize cachedSizeHint;
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mutable QBasicTimer delayedResize;
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int firstCascadingSection;
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int lastCascadingSection;
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int lastPos;
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int firstPos;
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int originalSize;
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int section; // used for resizing and moving sections
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int target;
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int pressed;
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int hover;
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int length;
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int sectionCount;
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bool movableSections;
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bool clickableSections;
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bool highlightSelected;
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bool stretchLastSection;
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bool cascadingResizing;
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bool resizeRecursionBlock;
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int stretchSections;
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int contentsSections;
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int defaultSectionSize;
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int minimumSectionSize;
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int lastSectionSize; // $$$
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int sectionIndicatorOffset;
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Qt::Alignment defaultAlignment;
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QLabel *sectionIndicator;
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QHeaderView::ResizeMode globalResizeMode;
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QList<QPersistentModelIndex> persistentHiddenSections;
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// header section spans
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struct SectionSpan {
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int size;
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int count;
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QHeaderView::ResizeMode resizeMode;
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inline SectionSpan() : size(0), count(0), resizeMode(QHeaderView::Interactive) {}
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inline SectionSpan(int length, int sections, QHeaderView::ResizeMode mode)
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: size(length), count(sections), resizeMode(mode) {}
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inline int sectionSize() const { return (count > 0 ? size / count : 0); }
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#ifndef QT_NO_DATASTREAM
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inline void write(QDataStream &out) const
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{ out << size; out << count; out << (int)resizeMode; }
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inline void read(QDataStream &in)
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{ in >> size; in >> count; int m; in >> m; resizeMode = (QHeaderView::ResizeMode)m; }
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#endif
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};
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QVector<SectionSpan> sectionSpans;
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void createSectionSpan(int start, int end, int size, QHeaderView::ResizeMode mode);
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void removeSectionsFromSpans(int start, int end);
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void resizeSectionSpan(int visualIndex, int oldSize, int newSize);
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void setDefaultSectionSize(int size);
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inline int headerSectionCount() const { // for debugging
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int count = 0;
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for (int i = 0; i < sectionSpans.count(); ++i)
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count += sectionSpans.at(i).count;
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return count;
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}
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inline int headerLength() const { // for debugging
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int len = 0;
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for (int i = 0; i < sectionSpans.count(); ++i)
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len += sectionSpans.at(i).size;
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return len;
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}
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inline void removeSpans(const QList<int> &spans) {
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for (int i = spans.count() - 1; i >= 0; --i) {
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length -= sectionSpans.at(spans.at(i)).size;
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sectionSpans.remove(spans.at(i));
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}
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}
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inline int sectionSpanIndex(int visual) const {
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int section_start = 0;
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for (int i = 0; i < sectionSpans.count(); ++i) {
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int section_end = section_start + sectionSpans.at(i).count - 1;
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if (visual >= section_start && visual <= section_end)
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return i;
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section_start = section_end + 1;
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}
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return -1;
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}
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int headerSectionSize(int visual) const;
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int headerSectionPosition(int visual) const;
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int headerVisualIndexAt(int position) const;
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// resize mode
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void setHeaderSectionResizeMode(int visual, QHeaderView::ResizeMode mode);
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QHeaderView::ResizeMode headerSectionResizeMode(int visual) const;
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void setGlobalHeaderResizeMode(QHeaderView::ResizeMode mode);
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// other
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int viewSectionSizeHint(int logical) const;
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int adjustedVisualIndex(int visualIndex) const;
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#ifndef QT_NO_DATASTREAM
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void write(QDataStream &out) const;
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bool read(QDataStream &in);
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#endif
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};
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QT_END_NAMESPACE
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#endif // QT_NO_ITEMVIEWS
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#endif // QHEADERVIEW_P_H
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