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Add hover and click support to PartitionBarsView.

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This commit is contained in:
Teo Mrnjavac 2015-12-04 18:02:19 +01:00
parent a9e241d288
commit cc5520edda
2 changed files with 135 additions and 18 deletions
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140
src/modules/partition/gui/PartitionBarsView.cpp
View File

@ -23,11 +23,13 @@
#include <kpmcore/core/device.h>
#include "utils/CalamaresUtilsGui.h"
#include <utils/CalamaresUtilsGui.h>
#include <utils/Logger.h>
// Qt
#include <QDebug>
#include <QMouseEvent>
#include <QPainter>
@ -38,9 +40,18 @@ static const int EXTENDED_PARTITION_MARGIN = 4;
PartitionBarsView::PartitionBarsView( QWidget* parent )
: QAbstractItemView( parent )
, m_hoveredRow( -1 )
{
setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
setFrameStyle( QFrame::NoFrame );
// Debug
connect( this, &PartitionBarsView::clicked,
this, [=]( const QModelIndex& index )
{
cDebug() << "Clicked row" << index.row();
} );
setMouseTracking( true );
}
@ -79,8 +90,8 @@ PartitionBarsView::paintEvent( QPaintEvent* event )
}
static void
drawSection( QPainter* painter, const QRect& rect_, int x, int width, const QModelIndex& index )
void
PartitionBarsView::drawSection( QPainter* painter, const QRect& rect_, int x, int width, const QModelIndex& index )
{
QColor color = index.isValid() ?
index.data( Qt::DecorationRole ).value< QColor >() :
@ -99,7 +110,13 @@ drawSection( QPainter* painter, const QRect& rect_, int x, int width, const QMod
rect.adjust( 0, 0, -1, -1 );
const QColor borderColor = color.darker();
painter->setPen( borderColor );
painter->setBrush( color );
if ( index.row() == m_hoveredRow )
painter->setBrush( color.lighter( 105 ) );
else
painter->setBrush( color );
painter->drawRoundedRect( rect, radius, radius );
// Draw shade
@ -129,21 +146,10 @@ PartitionBarsView::drawPartitions( QPainter* painter, const QRect& rect, const Q
const int count = modl->rowCount( parent );
const int totalWidth = rect.width();
qDebug() << "count:" << count << "totalWidth:" << totalWidth;
struct Item
{
qreal size;
QModelIndex index;
};
QVector< Item > items( count );
qreal total = 0;
for ( int row = 0; row < count; ++row )
{
QModelIndex index = modl->index( row, 0, parent );
qreal size = index.data( PartitionModel::SizeRole ).toLongLong();
total += size;
items[ row ] = { size, index };
}
auto pair = computeItemsVector( parent );
QVector< PartitionBarsView::Item >& items = pair.first;
qreal& total = pair.second;
int x = rect.x();
for ( int row = 0; row < count; ++row )
{
@ -181,6 +187,54 @@ PartitionBarsView::drawPartitions( QPainter* painter, const QRect& rect, const Q
QModelIndex
PartitionBarsView::indexAt( const QPoint& point ) const
{
return indexAt( point, rect(), QModelIndex() );
}
QModelIndex
PartitionBarsView::indexAt( const QPoint &point, const QRect &rect, const QModelIndex& parent ) const
{
PartitionModel* modl = qobject_cast< PartitionModel* >( model() );
if ( !modl )
return QModelIndex();
const int count = modl->rowCount( parent );
const int totalWidth = rect.width();
auto pair = computeItemsVector( parent );
QVector< PartitionBarsView::Item >& items = pair.first;
qreal& total = pair.second;
int x = rect.x();
for ( int row = 0; row < count; ++row )
{
const auto& item = items[ row ];
int width;
if ( row < count - 1 )
width = totalWidth * ( item.size / total );
else
// Make sure we fill the last pixel column
width = rect.right() - x + 1;
QRect thisItemRect( x, rect.y(), width, rect.height() );
if ( thisItemRect.contains( point ) )
{
if ( modl->hasChildren( item.index ) )
{
QRect subRect(
x + EXTENDED_PARTITION_MARGIN,
rect.y() + EXTENDED_PARTITION_MARGIN,
width - 2 * EXTENDED_PARTITION_MARGIN,
rect.height() - 2 * EXTENDED_PARTITION_MARGIN
);
if ( subRect.contains( point ) )
return indexAt( point, subRect, item.index );
return item.index;
}
else // contains but no children, we win
return item.index;
}
x += width;
}
return QModelIndex();
}
@ -239,8 +293,58 @@ PartitionBarsView::setSelection( const QRect& rect, QItemSelectionModel::Selecti
}
void
PartitionBarsView::mouseMoveEvent( QMouseEvent* event )
{
QModelIndex candidateIndex = indexAt( event->pos() );
int oldHoveredRow = m_hoveredRow;
if ( candidateIndex.isValid() )
{
m_hoveredRow = candidateIndex.row();
}
else
m_hoveredRow = -1;
if ( oldHoveredRow != m_hoveredRow )
{
viewport()->repaint();
}
}
void
PartitionBarsView::leaveEvent( QEvent* event )
{
if ( m_hoveredRow > -1 )
{
m_hoveredRow = -1;
viewport()->repaint();
}
}
void
PartitionBarsView::updateGeometries()
{
updateGeometry(); //get a new rect() for redrawing all the labels
}
QPair< QVector< PartitionBarsView::Item >, qreal >
PartitionBarsView::computeItemsVector( const QModelIndex& parent ) const
{
const int count = model()->rowCount( parent );
QVector< PartitionBarsView::Item > items( count );
qreal total = 0;
for ( int row = 0; row < count; ++row )
{
QModelIndex index = model()->index( row, 0, parent );
qreal size = index.data( PartitionModel::SizeRole ).toLongLong();
total += size;
items[ row ] = { size, index };
}
return qMakePair( items, total );
}

13
src/modules/partition/gui/PartitionBarsView.h
View File

@ -54,11 +54,24 @@ protected:
QModelIndex moveCursor( CursorAction cursorAction, Qt::KeyboardModifiers modifiers ) override;
void setSelection( const QRect& rect, QItemSelectionModel::SelectionFlags flags ) override;
void mouseMoveEvent( QMouseEvent* event ) override;
void leaveEvent( QEvent* event ) override;
protected slots:
void updateGeometries() override;
private:
void drawPartitions( QPainter* painter, const QRect& rect, const QModelIndex& parent );
void drawSection( QPainter* painter, const QRect& rect_, int x, int width, const QModelIndex& index );
QModelIndex indexAt( const QPoint& point, const QRect& rect, const QModelIndex& parent ) const;
struct Item
{
qreal size;
QModelIndex index;
};
inline QPair< QVector< Item >, qreal > computeItemsVector( const QModelIndex& parent ) const;
int m_hoveredRow;
};
#endif /* PARTITIONPREVIEW_H */