149 lines
4.2 KiB
C++
149 lines
4.2 KiB
C++
/******************************************************************************
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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 "QskTextLabelSkinlet.h"
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#include "QskTextLabel.h"
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#include "QskTextOptions.h"
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#include "QskTextRenderer.h"
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#include <qfontmetrics.h>
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#include <qmath.h>
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QskTextLabelSkinlet::QskTextLabelSkinlet( QskSkin* skin )
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: Inherited( skin )
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{
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setNodeRoles( { PanelRole, TextRole } );
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}
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QskTextLabelSkinlet::~QskTextLabelSkinlet() = default;
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QRectF QskTextLabelSkinlet::subControlRect( const QskSkinnable* skinnable,
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const QRectF& contentsRect, QskAspect::Subcontrol subControl ) const
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{
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if ( subControl == QskTextLabel::Panel )
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{
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return contentsRect;
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}
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else if ( subControl == QskTextLabel::Text )
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{
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const auto label = static_cast< const QskTextLabel* >( skinnable );
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if ( label->hasPanel() )
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{
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return label->subControlContentsRect(
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contentsRect, QskTextLabel::Panel );
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}
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return contentsRect;
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}
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return Inherited::subControlRect( skinnable, contentsRect, subControl );
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}
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QSGNode* QskTextLabelSkinlet::updateSubNode(
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const QskSkinnable* skinnable, quint8 nodeRole, QSGNode* node ) const
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{
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const auto label = static_cast< const QskTextLabel* >( skinnable );
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switch ( nodeRole )
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{
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case PanelRole:
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{
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if ( !label->hasPanel() )
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return nullptr;
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return updateBoxNode( label, node, QskTextLabel::Panel );
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}
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case TextRole:
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{
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return updateTextNode( label, node,
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label->text(), QskTextLabel::Text );
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}
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}
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return Inherited::updateSubNode( skinnable, nodeRole, node );
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}
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QSizeF QskTextLabelSkinlet::sizeHint( const QskSkinnable* skinnable,
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Qt::SizeHint which, const QSizeF& constraint ) const
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{
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if ( which != Qt::PreferredSize )
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return QSizeF();
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const auto label = static_cast< const QskTextLabel* >( skinnable );
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const auto font = label->effectiveFont( QskTextLabel::Text );
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auto textOptions = label->textOptions();
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textOptions.setFormat( label->effectiveTextFormat() );
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const auto text = label->text();
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QSizeF hint;
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const qreal lineHeight = QFontMetricsF( font ).height();
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if ( text.isEmpty() )
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{
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if ( constraint.height() < 0.0 )
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hint.setHeight( qCeil( lineHeight ) );
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}
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else if ( constraint.width() >= 0.0 )
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{
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if ( textOptions.effectiveElideMode() != Qt::ElideNone )
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{
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hint.setHeight( qCeil( lineHeight ) );
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}
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else
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{
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/*
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In case of QskTextOptions::NoWrap we could count
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the line numbers and calculate the height from
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lineHeight. TODO ...
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*/
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qreal maxHeight = std::numeric_limits< qreal >::max();
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if ( maxHeight / lineHeight > textOptions.maximumLineCount() )
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{
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// be careful with overflows
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maxHeight = textOptions.maximumLineCount() * lineHeight;
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}
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QSizeF size( constraint.width(), maxHeight );
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size = QskTextRenderer::textSize( text, font, textOptions, size );
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if ( label->hasPanel() )
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size = label->outerBoxSize( QskTextLabel::Panel, size );
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hint.setHeight( qCeil( size.height() ) );
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}
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}
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else if ( constraint.height() >= 0.0 )
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{
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const qreal maxWidth = std::numeric_limits< qreal >::max();
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QSizeF size( maxWidth, constraint.height() );
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size = QskTextRenderer::textSize( text, font, textOptions, size );
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if ( label->hasPanel() )
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size = label->outerBoxSize( QskTextLabel::Panel, size );
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hint.setWidth( qCeil( size.width() ) );
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}
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else
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{
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hint = QskTextRenderer::textSize( text, font, textOptions );
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if ( label->hasPanel() )
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hint = label->outerBoxSize( QskTextLabel::Panel, hint );
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}
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return hint;
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}
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#include "moc_QskTextLabelSkinlet.cpp"
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