104 lines
3.3 KiB
C++
104 lines
3.3 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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* Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef STRETCHHEADERVIEW_H
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#define STRETCHHEADERVIEW_H
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#include <QObject>
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#include <QByteArray>
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#include <QHeaderView>
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#include <QList>
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#include <QString>
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#include <QVector>
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class QWidget;
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class QAbstractItemModel;
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class QMouseEvent;
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class QResizeEvent;
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class StretchHeaderView : public QHeaderView {
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Q_OBJECT
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public:
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explicit StretchHeaderView(const Qt::Orientation orientation, QWidget *parent = nullptr);
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using ColumnWidthType = double;
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static const int kMinimumColumnWidth;
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static const int kMagicNumber;
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void setModel(QAbstractItemModel *model) override;
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// Serialises the proportional and actual column widths.
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// Use these instead of QHeaderView::restoreState and QHeaderView::saveState to persist the proportional values directly and avoid floating point errors over time.
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bool RestoreState(const QByteArray &sdata);
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QByteArray SaveState() const;
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QByteArray ResetState();
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// Hides a section and resizes all other sections to fill the gap. Does nothing if you try to hide the last section.
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void HideSection(const int logical);
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// Shows a section and resizes all other sections to make room.
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void ShowSection(const int logical);
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// Calls either HideSection or ShowSection.
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void SetSectionHidden(const int logical, const bool hidden);
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// Sets the width of the given column and resizes other columns appropriately.
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// width is the proportion of the entire width from 0.0 to 1.0.
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void SetColumnWidth(const int logical, const ColumnWidthType width);
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bool is_stretch_enabled() const { return stretch_enabled_; }
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public slots:
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// Changes the stretch mode.
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// Enabling stretch mode will initialize the proportional column widths from the current state of the header.
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void ToggleStretchEnabled();
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void SetStretchEnabled(const bool enabled);
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signals:
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// Emitted when the stretch mode is changed.
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void StretchEnabledChanged(bool enabled);
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protected:
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// QWidget
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void mouseMoveEvent(QMouseEvent *e) override;
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void resizeEvent(QResizeEvent *e) override;
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private:
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// Scales column_widths_ values so the total is 1.0.
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void NormaliseWidths(const QList<int> §ions = QList<int>());
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// Resizes the actual columns to make them match the proportional values in column_widths_.
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void UpdateWidths(const QList<int> §ions = QList<int>());
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private slots:
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void SectionResized(const int logical, const int old_size, const int new_size);
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private:
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bool stretch_enabled_;
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QVector<ColumnWidthType> column_widths_;
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bool in_mouse_move_event_;
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};
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#endif // STRETCHHEADERVIEW_H
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