145 lines
3.6 KiB
C++
145 lines
3.6 KiB
C++
/******************************************************************************
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* QSkinny - Copyright (C) The authors
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* SPDX-License-Identifier: BSD-3-Clause
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*****************************************************************************/
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#include "DynamicConstraintsPage.h"
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#include <QskAspect.h>
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#include <QskControl.h>
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#include <QskLinearBox.h>
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#include <QskPushButton.h>
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#include <QskRgbValue.h>
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namespace
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{
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class Control final : public QskControl
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{
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public:
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Control( const char* colorName, QQuickItem* parent = nullptr );
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Control( const char* colorName, qreal aspectRatio, QQuickItem* parent = nullptr );
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void transpose();
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protected:
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QSizeF layoutSizeHint( Qt::SizeHint, const QSizeF& ) const override;
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private:
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qreal m_aspectRatio;
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};
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class Box : public QskLinearBox
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{
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public:
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Box( QQuickItem* parent = nullptr );
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void flip();
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private:
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void addControl( Control* );
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};
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}
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Control::Control( const char* colorName, QQuickItem* parent )
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: QskControl( parent )
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, m_aspectRatio( 1.0 )
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{
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setObjectName( colorName );
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setBackgroundColor( colorName );
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setSizePolicy( QskSizePolicy::MinimumExpanding, QskSizePolicy::Fixed );
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setPreferredSize( 80, 100 );
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}
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Control::Control( const char* colorName, qreal aspectRatio, QQuickItem* parent )
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: QskControl( parent )
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, m_aspectRatio( aspectRatio )
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{
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setObjectName( colorName );
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setBackgroundColor( colorName );
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// setSizePolicy( QskSizePolicy::Constrained, QskSizePolicy::Ignored );
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setSizePolicy( QskSizePolicy::Constrained, QskSizePolicy::Fixed );
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setPreferredHeight( 100 );
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}
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QSizeF Control::layoutSizeHint(
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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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{
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if ( constraint.width() >= 0.0 )
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return QSizeF( -1.0, constraint.width() / m_aspectRatio );
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if ( constraint.height() >= 0.0 )
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return QSizeF( constraint.height() * m_aspectRatio, -1.0 );
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}
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return QSizeF();
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}
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void Control::transpose()
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{
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m_aspectRatio = 1.0 / m_aspectRatio;
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setPreferredSize( preferredSize().transposed() );
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setSizePolicy( sizePolicy().verticalPolicy(), sizePolicy().horizontalPolicy() );
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}
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Box::Box( QQuickItem* parent )
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: QskLinearBox( Qt::Horizontal, 2, parent )
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{
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setObjectName( "Box" );
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setBackgroundColor( Qt::white );
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setDefaultAlignment( Qt::AlignCenter );
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setMargins( 10 );
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setSpacing( 5 );
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addControl( new Control( "Cyan", 2.0 / 3.0 ) );
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addControl( new Control( "DarkCyan" ) );
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addControl( new Control( "Blue", 1.0 ) );
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addControl( new Control( "DarkBlue" ) );
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addControl( new Control( "Red", 3.0 / 2.0 ) );
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addControl( new Control( "DarkRed" ) );
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}
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void Box::flip()
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{
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for ( int i = 0; i < elementCount(); i++ )
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{
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if ( auto control = dynamic_cast< Control* >( itemAtIndex( i ) ) )
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control->transpose();
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}
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transpose();
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}
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void Box::addControl( Control* control )
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{
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addItem( control );
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}
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DynamicConstraintsPage::DynamicConstraintsPage( QQuickItem* parent )
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: QskLinearBox( Qt::Vertical, parent )
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{
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setMargins( 10 );
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setBackgroundColor( QskRgb::LightSteelBlue );
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auto box = new Box();
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auto button = new QskPushButton( "Flip" );
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button->setSizePolicy( Qt::Horizontal, QskSizePolicy::Fixed );
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button->setLayoutAlignmentHint( Qt::AlignTop | Qt::AlignLeft );
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QObject::connect( button, &QskPushButton::clicked, box, &Box::flip );
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addItem( button );
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addItem( box );
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}
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