138 lines
3.3 KiB
C++
138 lines
3.3 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 3-clause BSD License
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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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qreal heightForWidth( qreal width ) const override;
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qreal widthForHeight( qreal height ) const override;
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void transpose();
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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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qreal Control::heightForWidth( qreal width ) const
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{
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return width / m_aspectRatio;
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}
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qreal Control::widthForHeight( qreal height ) const
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{
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return height * m_aspectRatio;
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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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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 < count(); 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, Qt::AlignCenter );
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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( QskRgbValue::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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QObject::connect( button, &QskPushButton::clicked, box, &Box::flip );
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addItem( button, Qt::AlignTop | Qt::AlignLeft );
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addItem( box );
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}
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