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Implement wrapping to new line for partition preview color labels.

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This commit is contained in:
Teo Mrnjavac 2015-04-23 18:00:56 +02:00
parent 45d5c5bbde
commit 6c62d6f6d2
2 changed files with 132 additions and 44 deletions
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167
src/modules/partition/gui/PartitionPreview.cpp
View File

@ -32,6 +32,8 @@ static const int VIEW_HEIGHT = 30;
static const int LAYOUT_MARGIN = 8;
static const int CORNER_RADIUS = 3;
static const int EXTENDED_PARTITION_MARGIN = 4;
static const int LABELS_MARGIN = 40;
static const int LABEL_PARTITION_SQUARE_MARGIN = 18;
PartitionPreview::PartitionPreview( QWidget* parent )
@ -58,8 +60,12 @@ PartitionPreview::minimumSizeHint() const
QSize
PartitionPreview::sizeHint() const
{
if ( m_showLabels )
return QSize( -1, VIEW_HEIGHT + LAYOUT_MARGIN + labelsHeight() );
QAbstractItemModel* modl = model();
if ( m_showLabels && modl )
{
return QSize( -1, VIEW_HEIGHT + LAYOUT_MARGIN +
sizeForAllLabels( rect().width() ).height() );
}
return QSize( -1, VIEW_HEIGHT );
}
@ -182,6 +188,27 @@ drawPartitionSquare( QPainter* painter, const QRect& rect, const QBrush& brush )
}
QModelIndexList
PartitionPreview::getIndexesToDraw( const QModelIndex& parent ) const
{
QModelIndexList list;
QAbstractItemModel* modl = model();
if ( !modl )
return list;
for ( int row = 0; row < modl->rowCount( parent ); ++row )
{
QModelIndex index = modl->index( row, 0, parent );
if ( modl->hasChildren( index ) )
list.append( getIndexesToDraw( index ) );
else
list.append( index );
}
return list;
}
void
PartitionPreview::drawLabels( QPainter* painter, const QRect& rect, const QModelIndex& parent )
{
@ -189,61 +216,108 @@ PartitionPreview::drawLabels( QPainter* painter, const QRect& rect, const QModel
if ( !modl )
return;
std::function< QModelIndexList ( const QModelIndex& ) > gatherIndexes =
[ modl, &gatherIndexes ]( const QModelIndex& parent ) -> QModelIndexList
{
QModelIndexList list;
for ( int row = 0; row < modl->rowCount( parent ); ++row )
{
QModelIndex index = modl->index( row, 0, parent );
if ( modl->hasChildren( index ) )
list.append( gatherIndexes( index ) );
else
list.append( index );
}
return list;
};
QModelIndexList indexesToDraw = gatherIndexes( parent );
int h = rect.height();
QModelIndexList indexesToDraw = getIndexesToDraw( parent );
int label_x = rect.x();
int label_y = rect.y();
foreach ( const QModelIndex& index, indexesToDraw )
{
painter->setPen( Qt::black );
QStringList texts = { index.data().toString(),
index.sibling( index.row(), PartitionModel::SizeColumn ).data().toString() };
QFont nameFont;
nameFont.setPointSize( CalamaresUtils::defaultFontSize() );
painter->setFont( nameFont );
int vertOffset = 0;
int width = 0;
foreach ( const QString& text, texts )
QSize labelSize = sizeForLabel( texts );
QColor labelColor = index.data( Qt::DecorationRole ).value< QColor >();
if ( label_x + labelSize.width() > rect.width() ) //wrap to new line if overflow
{
QSize textSize = painter->fontMetrics().size( Qt::TextSingleLine, text );
painter->drawText( label_x+18, rect.y() + vertOffset + textSize.height() / 2, text );
vertOffset += textSize.height();
painter->setFont( QFont() );
painter->setPen( Qt::gray );
width = qMax( width, textSize.width() );
label_x = 0;
label_y += labelSize.height();
}
QColor color = index.data( Qt::DecorationRole ).value< QColor >();
drawPartitionSquare( painter, QRect( label_x, rect.y() - 3,
13, 13 ), color );
label_x += width + 40; // 40 is a margin between labels
//FIXME: handle overflow
}
drawLabel( painter, texts, labelColor, QPoint( label_x, label_y ) );
label_x += labelSize.width() + LABELS_MARGIN;
}
}
int
PartitionPreview::labelsHeight()
QSize
PartitionPreview::sizeForAllLabels( int maxLineWidth ) const
{
return CalamaresUtils::defaultFontHeight() * 2;
QAbstractItemModel* modl = model();
if ( !modl )
return QSize();
QModelIndexList indexesToDraw = getIndexesToDraw( QModelIndex() );
int lineLength = 0;
int numLines = 1;
int singleLabelHeight = 0;
foreach ( const QModelIndex& index, indexesToDraw )
{
QStringList texts = { index.data().toString(),
index.sibling( index.row(), PartitionModel::SizeColumn ).data().toString() };
QSize labelSize = sizeForLabel( texts );
if ( lineLength + labelSize.width() > maxLineWidth )
{
numLines++;
lineLength = labelSize.width();
}
else
{
lineLength += LABELS_MARGIN + labelSize.width();
}
singleLabelHeight = qMax( singleLabelHeight, labelSize.height() );
}
int totalHeight = numLines * singleLabelHeight;
return QSize( maxLineWidth, totalHeight );
}
QSize
PartitionPreview::sizeForLabel( const QStringList& text ) const
{
int vertOffset = 0;
int width = 0;
foreach ( const QString& textLine, text )
{
QSize textSize = fontMetrics().size( Qt::TextSingleLine, textLine );
if ( vertOffset == 0 )
vertOffset = textSize.height() / 2;
vertOffset += textSize.height();
width = qMax( width, textSize.width() );
}
width += LABEL_PARTITION_SQUARE_MARGIN; //for the color square
return QSize( width, vertOffset );
}
void
PartitionPreview::drawLabel( QPainter* painter,
const QStringList& text,
const QColor& color,
const QPoint& pos )
{
painter->setPen( Qt::black );
int vertOffset = 0;
int width = 0;
foreach ( const QString& textLine, text )
{
QSize textSize = painter->fontMetrics().size( Qt::TextSingleLine, textLine );
painter->drawText( pos.x()+LABEL_PARTITION_SQUARE_MARGIN,
pos.y() + vertOffset + textSize.height() / 2,
textLine );
vertOffset += textSize.height();
painter->setPen( Qt::gray );
width = qMax( width, textSize.width() );
}
drawPartitionSquare( painter, QRect( pos.x(), pos.y() - 3,
13, 13 ), color );
painter->setPen( Qt::black );
}
@ -292,6 +366,7 @@ void
PartitionPreview::setLabelsVisible( bool visible )
{
m_showLabels = visible;
updateGeometry();
repaint();
}
@ -315,3 +390,9 @@ PartitionPreview::setSelection( const QRect& rect, QItemSelectionModel::Selectio
{
}
void
PartitionPreview::updateGeometries()
{
updateGeometry(); //get a new rect() for redrawing all the labels
}

9
src/modules/partition/gui/PartitionPreview.h
View File

@ -56,10 +56,17 @@ protected:
QModelIndex moveCursor( CursorAction cursorAction, Qt::KeyboardModifiers modifiers ) override;
void setSelection( const QRect& rect, QItemSelectionModel::SelectionFlags flags ) override;
protected slots:
void updateGeometries() override;
private:
void drawPartitions( QPainter* painter, const QRect& rect, const QModelIndex& parent );
void drawLabels( QPainter* painter, const QRect& rect, const QModelIndex& parent );
static int labelsHeight();
QSize sizeForAllLabels( int maxLineWidth ) const;
QSize sizeForLabel( const QStringList& text ) const;
void drawLabel( QPainter* painter, const QStringList& text, const QColor& color, const QPoint& pos );
QModelIndexList getIndexesToDraw( const QModelIndex& parent ) const;
bool m_showLabels;
};