QskScaleRenderer added ( work in progress )
This commit is contained in:
Uwe Rathmann
parent
8fb18ab145
commit
4803701a56
338
src/nodes/QskScaleRenderer.cpp
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338
src/nodes/QskScaleRenderer.cpp
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/******************************************************************************
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* QSkinny - Copyright (C) 2016 Uwe Rathmann
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* This file may be used under the terms of the QSkinny License, Version 1.0
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*****************************************************************************/
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#include "QskScaleRenderer.h"
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#include "QskSkinlet.h"
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#include "QskSGNode.h"
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#include "QskTickmarksNode.h"
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#include "QskTextNode.h"
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#include "QskGraphicNode.h"
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#include "QskTextOptions.h"
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#include "QskGraphic.h"
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#include "QskControl.h"
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#include "QskFunctions.h"
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#include <qstring.h>
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#include <qfontmetrics.h>
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static QSGNode* qskRemoveTraillingNodes( QSGNode* node, QSGNode* childNode )
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{
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QskSGNode::removeAllChildNodesFrom( node, childNode );
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return nullptr;
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}
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static inline void qskInsertRemoveChild( QSGNode* parentNode,
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QSGNode* oldNode, QSGNode* newNode, bool append )
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{
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if ( newNode == oldNode )
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return;
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if ( oldNode )
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{
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parentNode->removeChildNode( oldNode );
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if ( oldNode->flags() & QSGNode::OwnedByParent )
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delete oldNode;
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}
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if ( newNode )
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{
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if ( append )
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parentNode->appendChildNode( newNode );
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else
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parentNode->prependChildNode( newNode );
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}
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}
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void QskScaleRenderer::setOrientation( Qt::Orientation orientation )
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{
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m_orientation = orientation;
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}
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void QskScaleRenderer::setBoundaries( const QskIntervalF& boundaries )
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{
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m_boundaries = boundaries;
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}
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void QskScaleRenderer::setTickmarks( const QskScaleTickmarks& tickmarks )
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{
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m_tickmarks = tickmarks;
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}
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void QskScaleRenderer::setTickColor( const QColor& color )
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{
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m_tickColor = color;
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}
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void QskScaleRenderer::setTickWidth( qreal width )
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{
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m_tickWidth = width;
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}
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void QskScaleRenderer::setFont( const QFont& font )
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{
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m_font = font;
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}
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void QskScaleRenderer::setTextColors( const QskTextColors& textColors )
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{
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m_textColors = textColors;
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}
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void QskScaleRenderer::setColorFilter( const QskColorFilter& colorFilter )
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{
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m_colorFilter = colorFilter;
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}
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QSGNode* QskScaleRenderer::updateScaleNode(
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const QskSkinnable* skinnable, const QRectF& tickmarksRect,
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const QRectF& labelsRect, QSGNode* node )
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{
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enum Role
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{
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Ticks = 1,
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Labels = 2
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};
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if ( node == nullptr )
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node = new QSGNode();
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{
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QSGNode* oldNode = QskSGNode::findChildNode( node, Ticks );
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QSGNode* newNode = nullptr;
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if ( !tickmarksRect.isEmpty() )
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{
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newNode = updateTicksNode( skinnable, tickmarksRect, oldNode );
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if ( newNode )
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QskSGNode::setNodeRole( newNode, Ticks );
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}
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qskInsertRemoveChild( node, oldNode, newNode, false );
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}
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{
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QSGNode* oldNode = QskSGNode::findChildNode( node, Labels );
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QSGNode* newNode = nullptr;
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if ( !labelsRect.isEmpty() )
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{
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newNode = updateLabelsNode( skinnable, labelsRect, oldNode );
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if ( newNode )
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QskSGNode::setNodeRole( newNode, Labels );
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}
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qskInsertRemoveChild( node, oldNode, newNode, true );
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}
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return node;
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}
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QSGNode* QskScaleRenderer::updateTicksNode(
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const QskSkinnable*, const QRectF& rect, QSGNode* node ) const
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{
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if ( rect.isEmpty() )
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return nullptr;
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auto ticksNode = static_cast< QskTickmarksNode* >( node );
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if( ticksNode == nullptr )
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ticksNode = new QskTickmarksNode;
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ticksNode->update( m_tickColor, rect, m_boundaries,
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m_tickmarks, m_tickWidth, m_orientation );
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return ticksNode;
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}
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QSGNode* QskScaleRenderer::updateLabelsNode(
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const QskSkinnable* skinnable, const QRectF& rect, QSGNode* node ) const
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{
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if ( rect.isEmpty() )
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return nullptr;
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const auto ticks = m_tickmarks.majorTicks();
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if ( ticks.isEmpty() )
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return nullptr;
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if( node == nullptr )
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node = new QSGNode;
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const QFontMetricsF fm( m_font );
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const qreal length = ( m_orientation == Qt::Horizontal ) ? rect.width() : rect.height();
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const qreal ratio = length / m_boundaries.width();
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auto nextNode = node->firstChild();
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for ( auto tick : ticks )
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{
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enum LabelNodeRole
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{
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TextNode = 1,
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GraphicNode = 2
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};
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const auto label = labelAt( tick );
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if ( label.isNull() )
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continue;
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const qreal tickPos = ratio * ( tick - m_boundaries.lowerBound() );
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if ( label.canConvert< QString >() )
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{
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const auto text = label.toString();
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if ( text.isEmpty() )
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continue;
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QRectF r;
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Qt::Alignment alignment;
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if( m_orientation == Qt::Horizontal )
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{
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const auto w = qskHorizontalAdvance( fm, text );
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auto pos = tickPos - 0.5 * w;
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pos = qBound( 0.0, pos, rect.width() - w );
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r = QRectF( rect.x() + pos, rect.y(), w, rect.height() );
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alignment = Qt::AlignLeft;
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}
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else
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{
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const auto h = fm.height();
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/*
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when clipping the label we can expand the clip rectangle
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by the ascent/descent margins, as nothing gets painted there
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anyway.
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*/
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const qreal distTop = h - fm.ascent();
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const qreal distBottom = fm.descent();
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auto pos = rect.height() - ( tickPos + 0.5 * h );
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pos = qBound( -distTop, pos, rect.height() - h + distBottom );
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r = QRectF( rect.x(), rect.y() + pos, rect.width(), rect.height() );
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alignment = Qt::AlignRight;
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}
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if ( nextNode && QskSGNode::nodeRole( nextNode ) != TextNode )
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{
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nextNode = qskRemoveTraillingNodes( node, nextNode );
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}
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if ( nextNode == nullptr )
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{
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nextNode = new QskTextNode;
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QskSGNode::setNodeRole( nextNode, TextNode );
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node->appendChildNode( nextNode );
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}
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auto textNode = static_cast< QskTextNode* >( nextNode );
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textNode->setTextData( skinnable->owningControl(), text, r, m_font,
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QskTextOptions(), m_textColors, alignment, Qsk::Normal );
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nextNode = nextNode->nextSibling();
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}
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else if ( label.canConvert< QskGraphic >() )
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{
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const auto graphic = label.value< QskGraphic >();
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if ( graphic.isNull() )
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continue;
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QRectF r;
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const auto h = fm.height();
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const auto w = graphic.widthForHeight( h );
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Qt::Alignment alignment;
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if( m_orientation == Qt::Horizontal )
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{
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auto pos = tickPos - 0.5 * w;
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pos = qBound( 0.0, pos, rect.width() - w );
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r = QRectF( rect.x() + pos, rect.y(), w, h );
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alignment = Qt::AlignHCenter | Qt::AlignBottom;
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}
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else
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{
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auto pos = rect.height() - ( tickPos + 0.5 * h );
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pos = qBound( 0.0, pos, rect.height() - h );
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r = QRectF( rect.right() - w, rect.y() + pos, w, h );
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alignment = Qt::AlignRight | Qt::AlignVCenter;
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}
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if ( nextNode && QskSGNode::nodeRole( nextNode ) != GraphicNode )
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{
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nextNode = qskRemoveTraillingNodes( node, nextNode );
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}
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if ( nextNode == nullptr )
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{
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nextNode = new QskGraphicNode;
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QskSGNode::setNodeRole( nextNode, GraphicNode );
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node->appendChildNode( nextNode );
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}
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auto graphicNode = static_cast< QskGraphicNode* >( nextNode );
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QskSkinlet::updateGraphicNode(
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skinnable->owningControl(), graphicNode,
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graphic, m_colorFilter, r, alignment );
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nextNode = nextNode->nextSibling();
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}
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}
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qskRemoveTraillingNodes( node, nextNode );
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return node;
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}
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QVariant QskScaleRenderer::labelAt( qreal pos ) const
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{
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return QString::number( pos, 'g' );
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}
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qreal QskScaleRenderer::maxLabelWidth() const
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{
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const auto ticks = m_tickmarks.majorTicks();
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if ( ticks.isEmpty() )
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return 0.0;
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const QFontMetricsF fm( m_font );
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qreal maxWidth = 0.0;
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for ( auto tick : ticks )
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{
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qreal w = 0.0;
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const auto label = labelAt( tick );
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if ( label.isNull() )
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continue;
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if ( label.canConvert< QString >() )
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{
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w = qskHorizontalAdvance( fm, label.toString() );
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}
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else if ( label.canConvert< QskGraphic >() )
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{
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const auto graphic = label.value< QskGraphic >();
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if ( !graphic.isNull() )
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{
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w = graphic.widthForHeight( fm.height() );
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}
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}
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maxWidth = qMax( w, maxWidth );
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}
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return maxWidth;
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}
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68
src/nodes/QskScaleRenderer.h
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68
src/nodes/QskScaleRenderer.h
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/******************************************************************************
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* QSkinny - Copyright (C) 2016 Uwe Rathmann
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* This file may be used under the terms of the QSkinny License, Version 1.0
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*****************************************************************************/
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#ifndef QSK_SCALE_RENDERER_H
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#define QSK_SCALE_RENDERER_H
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#include "QskGlobal.h"
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#include "QskIntervalF.h"
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#include "QskScaleTickmarks.h"
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#include "QskTextColors.h"
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#include "QskColorFilter.h"
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#include <qnamespace.h>
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#include <qfont.h>
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#include <qcolor.h>
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class QskSkinnable;
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class QSGNode;
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class QVariant;
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class QRectF;
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class QSK_EXPORT QskScaleRenderer
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{
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public:
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void setOrientation( Qt::Orientation );
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void setBoundaries( const QskIntervalF& );
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void setTickmarks( const QskScaleTickmarks& );
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void setTickColor( const QColor& );
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void setTickWidth( qreal );
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void setFont( const QFont& );
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void setTextColors( const QskTextColors& );
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void setColorFilter( const QskColorFilter& );
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QSGNode* updateScaleNode( const QskSkinnable*,
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const QRectF& tickmarksRect, const QRectF& labelsRect, QSGNode* );
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virtual QVariant labelAt( qreal pos ) const;
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qreal maxLabelWidth() const;
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virtual QSGNode* updateTicksNode(
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const QskSkinnable*, const QRectF&, QSGNode* ) const;
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virtual QSGNode* updateLabelsNode(
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const QskSkinnable*, const QRectF&, QSGNode* node ) const;
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private:
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Qt::Orientation m_orientation = Qt::Horizontal;
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QskIntervalF m_boundaries;
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QskScaleTickmarks m_tickmarks;
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QColor m_tickColor = Qt::black;
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qreal m_tickWidth = 1.0;
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QFont m_font;
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QskTextColors m_textColors;
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QskColorFilter m_colorFilter;
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};
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#endif
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@ -92,6 +92,7 @@ HEADERS += \
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nodes/QskPaintedNode.h \
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nodes/QskPlainTextRenderer.h \
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nodes/QskRichTextRenderer.h \
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nodes/QskScaleRenderer.h \
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nodes/QskSGNode.h \
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nodes/QskTextNode.h \
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nodes/QskTextRenderer.h \
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@ -110,6 +111,7 @@ SOURCES += \
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nodes/QskPaintedNode.cpp \
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nodes/QskPlainTextRenderer.cpp \
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nodes/QskRichTextRenderer.cpp \
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nodes/QskScaleRenderer.cpp \
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nodes/QskSGNode.cpp \
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nodes/QskTextNode.cpp \
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nodes/QskTextRenderer.cpp \
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