166 lines
4.7 KiB
C++
166 lines
4.7 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 "QskPushButtonSkinlet.h"
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#include "QskPushButton.h"
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#include "QskGraphic.h"
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#include "QskTextOptions.h"
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#include <qfontmetrics.h>
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#include <qmath.h>
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QskPushButtonSkinlet::QskPushButtonSkinlet( QskSkin* skin )
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: Inherited( skin )
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{
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setNodeRoles( { PanelRole, GraphicRole, TextRole } );
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}
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QskPushButtonSkinlet::~QskPushButtonSkinlet() = default;
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QRectF QskPushButtonSkinlet::subControlRect(
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const QskSkinnable* skinnable, QskAspect::Subcontrol subControl ) const
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{
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const auto button = static_cast< const QskPushButton* >( skinnable );
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if ( subControl == QskPushButton::Text )
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{
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return textRect( button );
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}
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else if ( subControl == QskPushButton::Graphic )
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{
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return graphicRect( button );
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}
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else if ( subControl == QskPushButton::Panel )
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{
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return button->contentsRect();
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}
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return Inherited::subControlRect( skinnable, subControl );
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}
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QSGNode* QskPushButtonSkinlet::updateSubNode(
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const QskSkinnable* skinnable, quint8 nodeRole, QSGNode* node ) const
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{
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const auto button = static_cast< const QskPushButton* >( 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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return updateBoxNode( button, node, QskPushButton::Panel );
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}
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case TextRole:
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{
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return updateTextNode( button, node );
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}
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case GraphicRole:
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{
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return updateGraphicNode( button, node,
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button->graphic(), QskPushButton::Graphic );
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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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QRectF QskPushButtonSkinlet::textRect( const QskPushButton* button ) const
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{
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// buttonShift -> TODO
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QRectF r = button->innerBox( QskPushButton::Panel,
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subControlRect( button, QskPushButton::Panel ) );
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if ( button->hasGraphic() )
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{
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// in case of having text + graphic we put the text at the bottom
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qreal h = QFontMetricsF( button->effectiveFont( QskPushButton::Text ) ).height();
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if ( h < r.height() )
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r.setTop( r.bottom() - h );
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}
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return r;
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}
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QRectF QskPushButtonSkinlet::graphicRect( const QskPushButton* button ) const
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{
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// buttonShift -> TODO
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QRectF r = button->innerBox( QskPushButton::Panel, button->contentsRect() );
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if ( !button->text().isEmpty() )
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{
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qreal h = textRect( button ).height() +
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button->metric( QskPushButton::Panel | QskAspect::Spacing );
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if ( h < r.height() )
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r.setBottom( r.bottom() - h );
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else
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r.setHeight( 0 );
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}
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const auto maxSize = button->graphicSourceSize();
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if ( maxSize.width() >= 0 || maxSize.height() >= 0 )
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{
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// limiting the size by graphicSize
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const qreal maxW = maxSize.width();
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const qreal maxH = maxSize.height();
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if ( maxW >= 0.0 && maxW < r.width() )
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{
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r.setX( r.center().x() - 0.5 * maxW );
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r.setWidth( maxW );
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}
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if ( maxH >= 0.0 && maxH < r.height() )
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{
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r.setY( r.center().y() - 0.5 * maxH );
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r.setHeight( maxH );
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}
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}
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const QSizeF sz = button->graphic().defaultSize();
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if ( !( r.isEmpty() || sz.isEmpty() ) )
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{
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// inner rectangle according to the aspect ratio
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const double scaleFactor =
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qMin( r.width() / sz.width(), r.height() / sz.height() );
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// early aligning to avoid pointless operations, that finally will
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// have no effect, when drawing to an integer based paint device
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const int w = qFloor( scaleFactor * sz.width() );
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const int h = qFloor( scaleFactor * sz.height() );
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const int x = qFloor( r.center().x() - 0.5 * w );
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const int y = qFloor( r.center().y() - 0.5 * h );
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r = QRectF( x, y, w, h );
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}
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return r;
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}
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QSGNode* QskPushButtonSkinlet::updateTextNode(
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const QskPushButton* button, QSGNode* node ) const
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{
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const auto rect = subControlRect( button, QskPushButton::Text ).toAlignedRect();
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const QFontMetricsF fm( button->effectiveFont( QskPushButton::Text ) );
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if ( !button->clip() && ( rect.height() < fm.height() ) )
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return nullptr;
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const auto alignment = button->flagHint< Qt::Alignment >(
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QskPushButton::Text | QskAspect::Alignment, Qt::AlignCenter );
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return QskSkinlet::updateTextNode( button, node, rect, alignment,
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button->text(), button->textOptions(), QskPushButton::Text );
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}
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#include "moc_QskPushButtonSkinlet.cpp"
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