calamares/src/modules/partition/gui/PartitionSplitterWidget.h
2017-12-20 08:39:09 -05:00

118 lines
3.6 KiB
C++

/* === This file is part of Calamares - <https://github.com/calamares> ===
*
* Copyright 2014-2016, Teo Mrnjavac <teo@kde.org>
*
* Calamares is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Calamares is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Calamares. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PARTITIONSPLITTERWIDGET_H
#define PARTITIONSPLITTERWIDGET_H
#include <QWidget>
#include <functional>
class Device;
struct PartitionSplitterItem
{
enum Status
{
Normal = 0,
Resizing,
ResizingNext
};
QString itemPath;
QColor color;
bool isFreeSpace;
qint64 size;
Status status;
using ChildVector = QVector< PartitionSplitterItem >;
ChildVector children;
static PartitionSplitterItem null() { return { QString(), QColor(), false, 0, Normal, ChildVector() }; }
bool isNull() const { return itemPath.isEmpty() && size == 0 && status == Normal; }
operator bool() const { return !isNull(); }
};
class PartitionSplitterWidget : public QWidget
{
Q_OBJECT
public:
explicit PartitionSplitterWidget( QWidget* parent = nullptr );
void init( Device* dev, bool drawNestedPartitions );
void setSplitPartition( const QString& path,
qint64 minSize,
qint64 maxSize,
qint64 preferredSize );
qint64 splitPartitionSize() const;
qint64 newPartitionSize() const;
QSize sizeHint() const override;
QSize minimumSizeHint() const override;
signals:
void partitionResized( const QString&, qint64, qint64 );
protected:
void paintEvent( QPaintEvent* event ) override;
void mousePressEvent( QMouseEvent* event ) override;
void mouseMoveEvent( QMouseEvent* event ) override;
void mouseReleaseEvent( QMouseEvent* event ) override;
private:
void setupItems( const QVector< PartitionSplitterItem >& items );
void drawPartitions( QPainter* painter,
const QRect& rect,
const QVector< PartitionSplitterItem >& itemList );
void drawSection( QPainter* painter, const QRect& rect_, int x, int width,
const PartitionSplitterItem& item );
void drawResizeHandle( QPainter* painter,
const QRect& rect_,
int x );
PartitionSplitterItem _findItem( QVector< PartitionSplitterItem >& items,
std::function< bool ( PartitionSplitterItem& ) > condition ) const;
int _eachItem( QVector< PartitionSplitterItem >& items,
std::function< bool ( PartitionSplitterItem& ) > operation ) const;
QPair< QVector< PartitionSplitterItem >, qreal >
computeItemsVector( const QVector< PartitionSplitterItem >& originalItems ) const;
QVector< PartitionSplitterItem > m_items;
QString m_itemToResizePath;
PartitionSplitterItem m_itemToResize;
PartitionSplitterItem m_itemToResizeNext;
qint64 m_itemMinSize;
qint64 m_itemMaxSize;
qint64 m_itemPrefSize;
bool m_resizing;
int m_resizeHandleX;
const int HANDLE_SNAP;
bool m_drawNestedPartitions;
};
#endif // PARTITIONSPLITTERWIDGET_H