qskinny/examples/iotdashboard/PieChartSkinlet.cpp
2021-08-04 09:31:16 +02:00

87 lines
2.5 KiB
C++

/******************************************************************************
* Copyright (C) 2021 Edelhirsch Software GmbH
* This file may be used under the terms of the 3-clause BSD License
*****************************************************************************/
#include "PieChartSkinlet.h"
#include "PieChart.h"
#include <QskBoxNode.h>
#include <QskBoxShapeMetrics.h>
#include <QskBoxBorderMetrics.h>
#include <QskBoxBorderColors.h>
PieChartSkinlet::PieChartSkinlet( QskSkin* skin )
: QskSkinlet( skin )
{
setNodeRoles( { PanelRole, LabelsRole } );
}
QRectF PieChartSkinlet::subControlRect( const QskSkinnable*, const QRectF& contentsRect, QskAspect::Subcontrol ) const
{
return contentsRect;
}
QSGNode* PieChartSkinlet::updateSubNode( const QskSkinnable* skinnable, quint8 nodeRole, QSGNode* node ) const
{
const auto pieChart = static_cast< const PieChart* >( skinnable );
switch( nodeRole )
{
case PanelRole:
return updatePanelNode( pieChart, node );
case LabelsRole:
return updateLabelsNode( pieChart, node );
default:
return nullptr;
}
}
QSGNode* PieChartSkinlet::updatePanelNode( const PieChart* pieChart, QSGNode* node ) const
{
auto boxNode = static_cast< QskBoxNode* >( node );
if( boxNode == nullptr )
{
boxNode = new QskBoxNode;
}
auto panelRect = subControlRect( pieChart, pieChart->contentsRect(), PieChart::Panel );
// ### when displaying a legend we might want to revise this
if( panelRect.width() > panelRect.height() )
{
panelRect.setWidth( panelRect.height() );
}
else if( panelRect.width() < panelRect.height() )
{
panelRect.setHeight( panelRect.width() );
}
const qreal radius = panelRect.width() / 2;
QskBoxShapeMetrics shapeMetrics( radius, radius, radius, radius );
QskBoxBorderMetrics borderMetrics = pieChart->boxBorderMetricsHint( PieChart::Panel );
QskBoxBorderColors borderColors = pieChart->boxBorderColorsHint( PieChart::Panel );
QskGradient gradient = pieChart->gradientHint( PieChart::Panel );
boxNode->setBoxData( panelRect, shapeMetrics, borderMetrics, borderColors, gradient );
return boxNode;
}
QSGNode* PieChartSkinlet::updateLabelsNode( const PieChart* pieChart, QSGNode* /*node*/ ) const
{
const int labelsCount = pieChart->labels().count();
if( labelsCount < 1 )
{
return nullptr;
}
return nullptr;
}
#include "moc_PieChartSkinlet.cpp"