128 lines
3.4 KiB
C++
128 lines
3.4 KiB
C++
#include "QskTickmarksNode.h"
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#include "QskScaleTickmarks.h"
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#include <QSGFlatColorMaterial>
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#include <QSGGeometryNode>
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#include <QRectF>
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QSK_QT_PRIVATE_BEGIN
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#include <private/qsgnode_p.h>
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QSK_QT_PRIVATE_END
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static constexpr inline qreal qskTickFactor( QskScaleTickmarks::TickType type )
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{
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using TM = QskScaleTickmarks;
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return type == TM::MinorTick ? 0.7 : ( type == TM::MinorTick ? 0.85 : 1.0 );
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}
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class QskTickmarksNodePrivate final : public QSGGeometryNodePrivate
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{
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public:
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QskTickmarksNodePrivate()
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: geometry( QSGGeometry::defaultAttributes_Point2D(), 0 )
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{
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geometry.setDrawingMode( QSGGeometry::DrawLines );
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geometry.setVertexDataPattern( QSGGeometry::StaticPattern );
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}
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QSGGeometry geometry;
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QSGFlatColorMaterial material;
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QskIntervalF boundaries;
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QskScaleTickmarks tickmarks;
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QRectF rect;
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int lineWidth = 0;
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QskHashValue hash = 0;
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};
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QskTickmarksNode::QskTickmarksNode()
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: QSGGeometryNode( *new QskTickmarksNodePrivate )
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{
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Q_D( QskTickmarksNode );
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setGeometry( &d->geometry );
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setMaterial( &d->material );
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}
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QskTickmarksNode::~QskTickmarksNode()
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{
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}
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void QskTickmarksNode::update(
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const QColor& color, const QRectF& rect,
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const QskIntervalF& boundaries, const QskScaleTickmarks& tickmarks,
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int lineWidth, Qt::Orientation orientation )
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{
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Q_D( QskTickmarksNode );
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if( lineWidth != d->lineWidth )
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{
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d->lineWidth = lineWidth;
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d->geometry.setLineWidth( lineWidth );
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markDirty( QSGNode::DirtyGeometry );
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}
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const auto hash = tickmarks.hash( 17435 );
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if( ( hash != d->hash ) || ( rect != d->rect ) )
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{
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d->hash = hash;
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d->rect = rect;
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d->geometry.allocate( tickmarks.tickCount() * 2 );
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auto vertexData = d->geometry.vertexDataAsPoint2D();
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const qreal min = boundaries.lowerBound();
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const qreal range = boundaries.width();
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using TM = QskScaleTickmarks;
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for( int i = TM::MinorTick; i <= TM::MajorTick; i++ )
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{
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const auto tickType = static_cast< TM::TickType >( i );
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const auto ticks = tickmarks.ticks( tickType );
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if ( orientation == Qt::Horizontal )
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{
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const qreal ratio = rect.width() / range;
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const float len = rect.height() * qskTickFactor( tickType );
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for( const auto tick : ticks )
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{
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const auto x = rect.x() + ( tick - min ) * ratio;
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vertexData[ 0 ].set( x, rect.bottom() );
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vertexData[ 1 ].set( x, rect.bottom() - len );
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vertexData += 2;
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}
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}
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else
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{
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const qreal ratio = rect.height() / range;
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const float len = rect.width() * qskTickFactor( tickType );
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for( const auto tick : ticks )
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{
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const auto y = rect.bottom() - ( tick - min ) * ratio;
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vertexData[ 0 ].set( rect.right(), y );
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vertexData[ 1 ].set( rect.right() - len, y );
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vertexData += 2;
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}
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}
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}
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d->geometry.markVertexDataDirty();
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markDirty( QSGNode::DirtyGeometry );
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}
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if ( color != d->material.color() )
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{
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d->material.setColor( color );
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markDirty( QSGNode::DirtyMaterial );
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}
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}
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