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Diffstat (limited to 'src/gui/itemviews/qheaderview_p.h')
| -rw-r--r-- | src/gui/itemviews/qheaderview_p.h | 370 |
1 files changed, 370 insertions, 0 deletions
diff --git a/src/gui/itemviews/qheaderview_p.h b/src/gui/itemviews/qheaderview_p.h new file mode 100644 index 0000000..fbba69a --- /dev/null +++ b/src/gui/itemviews/qheaderview_p.h @@ -0,0 +1,370 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QHEADERVIEW_P_H +#define QHEADERVIEW_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include "private/qabstractitemview_p.h" + +#ifndef QT_NO_ITEMVIEWS + +#include "QtCore/qbitarray.h" +#include "QtGui/qapplication.h" +#include "QtGui/qlabel.h" + +QT_BEGIN_NAMESPACE + +class QHeaderViewPrivate: public QAbstractItemViewPrivate +{ + Q_DECLARE_PUBLIC(QHeaderView) + +public: + enum StateVersion { VersionMarker = 0xff }; + + QHeaderViewPrivate() + : state(NoState), + offset(0), + sortIndicatorOrder(Qt::DescendingOrder), + sortIndicatorSection(0), + sortIndicatorShown(false), + lastPos(-1), + firstPos(-1), + originalSize(-1), + section(-1), + target(-1), + pressed(-1), + hover(-1), + length(0), + sectionCount(0), + movableSections(false), + clickableSections(false), + highlightSelected(false), + stretchLastSection(false), + cascadingResizing(false), + forceInitializing(false), + stretchSections(0), + contentsSections(0), + minimumSectionSize(-1), + lastSectionSize(0), + sectionIndicatorOffset(0), + sectionIndicator(0), + globalResizeMode(QHeaderView::Interactive) + {} + + + int lastVisibleVisualIndex() const; + int sectionHandleAt(int position); + void setupSectionIndicator(int section, int position); + void updateSectionIndicator(int section, int position); + void updateHiddenSections(int logicalFirst, int logicalLast); + void resizeSections(QHeaderView::ResizeMode globalMode, bool useGlobalMode = false); + void _q_sectionsRemoved(const QModelIndex &,int,int); + void _q_layoutAboutToBeChanged(); + void _q_layoutChanged(); + + bool isSectionSelected(int section) const; + + inline bool rowIntersectsSelection(int row) const { + return (selectionModel ? selectionModel->rowIntersectsSelection(row, root) : false); + } + + inline bool columnIntersectsSelection(int column) const { + return (selectionModel ? selectionModel->columnIntersectsSelection(column, root) : false); + } + + inline bool sectionIntersectsSelection(int logical) const { + return (orientation == Qt::Horizontal ? columnIntersectsSelection(logical) : rowIntersectsSelection(logical)); + } + + inline bool isRowSelected(int row) const { + return (selectionModel ? selectionModel->isRowSelected(row, root) : false); + } + + inline bool isColumnSelected(int column) const { + return (selectionModel ? selectionModel->isColumnSelected(column, root) : false); + } + + inline void prepareSectionSelected() { + if (!selectionModel || !selectionModel->hasSelection()) + sectionSelected.clear(); + else if (sectionSelected.count() != sectionCount * 2) + sectionSelected.fill(false, sectionCount * 2); + else sectionSelected.fill(false); + } + + inline bool reverse() const { + return orientation == Qt::Horizontal && q_func()->isRightToLeft(); + } + + inline int logicalIndex(int visualIndex) const { + return logicalIndices.isEmpty() ? visualIndex : logicalIndices.at(visualIndex); + } + + inline int visualIndex(int logicalIndex) const { + return visualIndices.isEmpty() ? logicalIndex : visualIndices.at(logicalIndex); + } + + inline void setDefaultValues(Qt::Orientation o) { + orientation = o; + defaultSectionSize = (o == Qt::Horizontal ? 100 + : qMax(q_func()->minimumSectionSize(), 30)); + defaultAlignment = (o == Qt::Horizontal + ? Qt::Alignment(Qt::AlignCenter) + : Qt::AlignLeft|Qt::AlignVCenter); + } + + inline bool isVisualIndexHidden(int visual) const { + return !sectionHidden.isEmpty() && sectionHidden.at(visual); + } + + inline void setVisualIndexHidden(int visual, bool hidden) { + if (!sectionHidden.isEmpty()) sectionHidden.setBit(visual, hidden); + } + + inline QHeaderView::ResizeMode visualIndexResizeMode(int visual) const { + return headerSectionResizeMode(visual); + } + + inline bool hasAutoResizeSections() const { + return stretchSections || stretchLastSection || contentsSections; + } + + QStyleOptionHeader getStyleOption() const; + + inline void invalidateCachedSizeHint() const { + cachedSizeHint = QSize(); + } + + inline void initializeIndexMapping() const { + if (visualIndices.count() != sectionCount + || logicalIndices.count() != sectionCount) { + visualIndices.resize(sectionCount); + logicalIndices.resize(sectionCount); + for (int s = 0; s < sectionCount; ++s) { + visualIndices[s] = s; + logicalIndices[s] = s; + } + } + } + + inline void clearCascadingSections() { + firstCascadingSection = sectionCount; + lastCascadingSection = 0; + cascadingSectionSize.clear(); + } + + inline void saveCascadingSectionSize(int visual, int size) { + if (!cascadingSectionSize.contains(visual)) { + cascadingSectionSize.insert(visual, size); + firstCascadingSection = qMin(firstCascadingSection, visual); + lastCascadingSection = qMax(lastCascadingSection, visual); + } + } + + inline bool sectionIsCascadable(int visual) const { + return visualIndexResizeMode(visual) == QHeaderView::Interactive; + } + + inline int modelSectionCount() const { + return (orientation == Qt::Horizontal + ? model->columnCount(root) + : model->rowCount(root)); + } + + inline bool modelIsEmpty() const { + return (model->rowCount(root) == 0 || model->columnCount(root) == 0); + } + + inline void doDelayedResizeSections() { + if (!delayedResize.isActive()) + delayedResize.start(0, q_func()); + } + + inline void executePostedResize() const { + if (delayedResize.isActive() && state == NoState) { + delayedResize.stop(); + const_cast<QHeaderView*>(q_func())->resizeSections(); + } + } + + void clear(); + void flipSortIndicator(int section); + void cascadingResize(int visual, int newSize); + + enum State { NoState, ResizeSection, MoveSection, SelectSections, NoClear } state; + + int offset; + Qt::Orientation orientation; + Qt::SortOrder sortIndicatorOrder; + int sortIndicatorSection; + bool sortIndicatorShown; + + mutable QVector<int> visualIndices; // visualIndex = visualIndices.at(logicalIndex) + mutable QVector<int> logicalIndices; // logicalIndex = row or column in the model + mutable QBitArray sectionSelected; // from logical index to bit + mutable QBitArray sectionHidden; // from visual index to bit + mutable QHash<int, int> hiddenSectionSize; // from logical index to section size + mutable QHash<int, int> cascadingSectionSize; // from visual index to section size + mutable QSize cachedSizeHint; + mutable QBasicTimer delayedResize; + + int firstCascadingSection; + int lastCascadingSection; + + int lastPos; + int firstPos; + int originalSize; + int section; // used for resizing and moving sections + int target; + int pressed; + int hover; + + int length; + int sectionCount; + bool movableSections; + bool clickableSections; + bool highlightSelected; + bool stretchLastSection; + bool cascadingResizing; + bool forceInitializing; + int stretchSections; + int contentsSections; + int defaultSectionSize; + int minimumSectionSize; + int lastSectionSize; // $$$ + int sectionIndicatorOffset; + Qt::Alignment defaultAlignment; + QLabel *sectionIndicator; + QHeaderView::ResizeMode globalResizeMode; + QList<QPersistentModelIndex> persistentHiddenSections; + + // header section spans + + struct SectionSpan { + int size; + int count; + QHeaderView::ResizeMode resizeMode; + inline SectionSpan() : size(0), count(0), resizeMode(QHeaderView::Interactive) {} + inline SectionSpan(int length, int sections, QHeaderView::ResizeMode mode) + : size(length), count(sections), resizeMode(mode) {} + inline int sectionSize() const { return (count > 0 ? size / count : 0); } +#ifndef QT_NO_DATASTREAM + inline void write(QDataStream &out) const + { out << size; out << count; out << (int)resizeMode; } + inline void read(QDataStream &in) + { in >> size; in >> count; int m; in >> m; resizeMode = (QHeaderView::ResizeMode)m; } +#endif + }; + + QVector<SectionSpan> sectionSpans; + + void createSectionSpan(int start, int end, int size, QHeaderView::ResizeMode mode); + void removeSectionsFromSpans(int start, int end); + void resizeSectionSpan(int visualIndex, int oldSize, int newSize); + + inline int headerSectionCount() const { // for debugging + int count = 0; + for (int i = 0; i < sectionSpans.count(); ++i) + count += sectionSpans.at(i).count; + return count; + } + + inline int headerLength() const { // for debugging + int len = 0; + for (int i = 0; i < sectionSpans.count(); ++i) + len += sectionSpans.at(i).size; + return len; + } + + inline void removeSpans(const QList<int> &spans) { + for (int i = spans.count() - 1; i >= 0; --i) { + length -= sectionSpans.at(spans.at(i)).size; + sectionSpans.remove(spans.at(i)); + } + } + + inline int sectionSpanIndex(int visual) const { + int section_start = 0; + for (int i = 0; i < sectionSpans.count(); ++i) { + int section_end = section_start + sectionSpans.at(i).count - 1; + if (visual >= section_start && visual <= section_end) + return i; + section_start = section_end + 1; + } + return -1; + } + + int headerSectionSize(int visual) const; + int headerSectionPosition(int visual) const; + int headerVisualIndexAt(int position) const; + + // resize mode + void setHeaderSectionResizeMode(int visual, QHeaderView::ResizeMode mode); + QHeaderView::ResizeMode headerSectionResizeMode(int visual) const; + void setGlobalHeaderResizeMode(QHeaderView::ResizeMode mode); + + // other + int viewSectionSizeHint(int logical) const; + int adjustedVisualIndex(int visualIndex) const; + +#ifndef QT_NO_DATASTREAM + void write(QDataStream &out) const; + bool read(QDataStream &in); +#endif + +}; + +QT_END_NAMESPACE + +#endif // QT_NO_ITEMVIEWS + +#endif // QHEADERVIEW_P_H |