New UI and logic for Alongside autopartitioning+install.

src/modules/partition/gui/PartitionSplitterWidget.h

@@ -0,0 +1,88 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2014, 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>
+
+struct PartitionSplitterItem
+{
+    QString itemPath;
+    QColor color;
+    bool isFreeSpace;
+    qint64 size;
+
+    QList< PartitionSplitterItem > children;
+};
+
+class PartitionSplitterWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit PartitionSplitterWidget( QWidget* parent = nullptr );
+
+    void init( const QList< PartitionSplitterItem >& items );
+
+    void setSplitPartition( const QString& path,
+                            qint64 minSize,
+                            qint64 maxSize,
+                            qint64 preferredSize,
+                            const QString& newLabel );
+
+    qint64 splitPartitionSize() const;
+    qint64 newPartitionSize() const;
+
+    QSize sizeHint() 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 drawPartitions( QPainter* painter,
+                         const QRect& rect,
+                         const QList< PartitionSplitterItem >& items );
+    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( QList< PartitionSplitterItem >& items, auto condition );
+
+    QList< 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;
+};
+
+#endif // PARTITIONSPLITTERWIDGET_H