QskDrawer reimplemented, can be open by a swipe gesture now. more work

to do

examples/gallery/main.cpp

@@ -62,7 +62,8 @@ namespace
         Drawer( QQuickItem* parent = nullptr )
             : QskDrawer( parent )
         {
-            auto box = new QskLinearBox( Qt::Vertical );
+            auto box = new QskLinearBox( Qt::Vertical, this );
+
             box->setSection( QskAspect::Header );
             box->setPanel( true );
             box->setPaddingHint( QskBox::Panel, 20 );
@@ -75,8 +76,6 @@ namespace
 
             auto btn = new QskPushButton( "Close", box );
             connect( btn, &QskPushButton::clicked, this, &QskDrawer::close );
-
-            setContent( box );
         }
     };
 

skins/fluent2/QskFluent2Skin.cpp

@@ -606,21 +606,15 @@ void Editor::setupDialogButtonBoxColors(
 void Editor::setupDrawerMetrics()
 {
     using Q = QskDrawer;
-
-    setPadding( Q::Panel, 5 );
-    setHint( Q::Overlay | QskAspect::Style, false );
+    using A = QskAspect;
 
 #if 1
-    setAnimation( Q::Panel | QskAspect::Position, 200 );
+    setAnimation( Q::Panel | A::Metric | A::Position, 200 );
 #endif
 }
 
-void Editor::setupDrawerColors(
-    QskAspect::Section section, const QskFluent2Theme& theme )
+void Editor::setupDrawerColors( QskAspect::Section, const QskFluent2Theme& )
 {
-    using Q = QskDrawer;
-
-    setGradient( Q::Panel | section, theme.palette.background.solid.base );
 }
 
 void Editor::setupFocusIndicatorMetrics()

skins/material3/QskMaterial3Skin.cpp

@@ -809,12 +809,9 @@ void Editor::setupDialogButtonBox()
 void Editor::setupDrawer()
 {
     using Q = QskDrawer;
+    using A = QskAspect;
 
-    setPadding( Q::Panel, 5_dp );
-    setGradient( Q::Panel, m_pal.background );
-    setHint( Q::Overlay | QskAspect::Style, false );
-
-    setAnimation( Q::Panel | QskAspect::Position, qskDuration );
+    setAnimation( Q::Panel | A::Metric | A::Position, qskDuration );
 }
 
 void Editor::setupSlider()

skins/squiek/QskSquiekSkin.cpp

@@ -759,13 +759,12 @@ void Editor::setupDialogButtonBox()
     setBoxShape( Q::Panel, 2 );
 }
 
-void Editor::setupDrawer() {
+void Editor::setupDrawer()
+{
+    using A = QskAspect;
     using Q = QskDrawer;
 
-    setPadding( Q::Panel, 5 );
-    setGradient( Q::Panel, m_pal.darker125 );
-    setAnimation( Q::Panel | QskAspect::Position, qskDuration );
-    setHint( Q::Overlay | QskAspect::Style, false );
+    setAnimation( Q::Panel | A::Metric | A::Position, qskDuration );
 }
 
 void Editor::setupTabButton()

src/controls/QskDrawer.cpp

@@ -1,48 +1,258 @@
+/******************************************************************************
+ * QSkinny - Copyright (C) 2016 Uwe Rathmann
+ *           SPDX-License-Identifier: BSD-3-Clause
+ *****************************************************************************/
+
 #include "QskDrawer.h"
 #include "QskAspect.h"
-#include "QskControl.h"
+#include "QskAnimationHint.h"
+#include "QskQuick.h"
+#include "QskEvent.h"
 
-#include <QskPopup.h>
-#include <QskBox.h>
-#include <QskAnimationHint.h>
-#include <QskQuick.h>
+#include "QskPanGestureRecognizer.h"
+#include "QskGesture.h"
 
+#include <qguiapplication.h>
+#include <qstylehints.h>
+
+QSK_QT_PRIVATE_BEGIN
+#include <private/qquickitem_p.h>
+#include <private/qquickitemchangelistener_p.h>
+QSK_QT_PRIVATE_END
+
+/*
+    Only used for the sliding in animation. Do we want to
+    introduce a specific panel as background ???
+ */
 QSK_SUBCONTROL( QskDrawer, Panel )
-QSK_SUBCONTROL( QskDrawer, Overlay )
+
+static void qskCatchMouseEvents( QQuickItem* item )
+{
+#if 1
+    // manipulating other items - do we really want to do this ?
+    item->setAcceptedMouseButtons( Qt::LeftButton );
+    item->setFiltersChildMouseEvents( true );
+#endif
+}
+
+static bool qskCheckDirection( Qt::Edge edge, const QskPanGesture* gesture )
+{
+    const auto degrees = gesture->angle();
+
+    switch( edge )
+    {
+        case Qt::LeftEdge:
+            return ( degrees < 90.0 ) || ( degrees ) > 270.0;
+
+        case Qt::RightEdge:
+            return ( degrees > 90.0 ) && ( degrees < 270.0 );
+
+        case Qt::TopEdge:
+            return degrees > 180.0;
+
+        case Qt::BottomEdge:
+            return degrees < 180.0;
+    }
+
+    return false;
+}
+
+static void qskLayoutDrawer( const QRectF& rect, QskDrawer* drawer )
+{
+    const auto size = qskSizeConstraint( drawer, Qt::PreferredSize );
+
+    QRectF r( 0.0, 0.0, size.width(), size.height() );
+
+    switch( drawer->edge() )
+    {
+        case Qt::LeftEdge:
+        {
+            r.setHeight( rect.height() );
+            r.moveRight( rect.left() + size.width() );
+            break;
+        }
+        case Qt::RightEdge:
+        {
+            r.setHeight( rect.height() );
+            r.moveLeft( rect.right() - size.width() );
+            break;
+        }
+
+        case Qt::TopEdge:
+        {
+            r.setWidth( rect.width() );
+            r.moveBottom( rect.top() + size.height() );
+            break;
+        }
+
+        case Qt::BottomEdge:
+        {
+            r.setWidth( rect.width() );
+            r.moveTop( rect.bottom() - size.height() );
+            break;
+        }
+    }
+
+    drawer->setGeometry( r );
+}
+
+namespace
+{
+    class GeometryListener final : public QQuickItemChangeListener
+    {
+      public:
+        GeometryListener( QQuickItem* item, QQuickItem* adjustedItem )
+            : m_item( item )
+            , m_adjustedItem( adjustedItem )
+        {
+            adjust();
+            setEnabled( true );
+        }
+
+        ~GeometryListener()
+        {
+            setEnabled( false );
+        }
+
+      private:
+        void itemGeometryChanged( QQuickItem*,
+            QQuickGeometryChange, const QRectF& ) override
+        {
+            adjust();
+        }
+
+      private:
+        void adjust()
+        {
+#if 0
+            const auto pos = m_adjustedItem->mapFromItem( m_item, QPointF() );
+            qskSetItemGeometry( m_adjustedItem,
+                pos.x(), pos.y(), m_item->width(), m_item->height() );
+#else
+            qskLayoutDrawer( QRectF( QPointF(), m_item->size() ),
+                qobject_cast< QskDrawer* >( m_adjustedItem ) );
+#endif
+        }
+
+        void setEnabled( bool on )
+        {
+            const auto changeTypes = QQuickItemPrivate::Geometry;
+
+            auto d = QQuickItemPrivate::get( m_item );
+            if ( on )
+                d->addItemChangeListener( this, changeTypes );
+            else
+                d->removeItemChangeListener( this, changeTypes );
+        }
+
+        QQuickItem* m_item;
+        QQuickItem* m_adjustedItem;
+    };
+}
+
+namespace
+{
+    class GestureRecognizer : public QskPanGestureRecognizer
+    {
+        using Inherited = QskPanGestureRecognizer;
+
+      public:
+        GestureRecognizer( QskDrawer* drawer )
+            : QskPanGestureRecognizer( drawer )
+        {
+            setWatchedItem( drawer->parentItem() );
+            setTargetItem( drawer );
+        }
+
+      protected:
+        bool isAcceptedPos( const QPointF& pos ) const override
+        {
+            auto drawer = qobject_cast< const QskDrawer* >( targetItem() );
+
+            const auto dragMargin = drawer->dragMargin();
+            if ( dragMargin <= 0.0 )
+                return false;
+
+            auto rect = qskItemRect( watchedItem() );
+
+            switch( drawer->edge() )
+            {
+                case Qt::LeftEdge:
+                    rect.setRight( rect.left() + dragMargin );
+                    break;
+
+                case Qt::RightEdge:
+                    rect.setLeft( rect.right() - dragMargin );
+                    break;
+
+                case Qt::TopEdge:
+                    rect.setBottom( rect.top() + dragMargin );
+                    break;
+
+                case Qt::BottomEdge:
+                    rect.setTop( rect.bottom() - dragMargin );
+                    break;
+            }
+
+            return rect.contains( pos );
+        }
+    };
+}
 
 class QskDrawer::PrivateData
 {
   public:
-    QskControl* content = nullptr;
-    QskBox* contentBox = nullptr;
     Qt::Edge edge = Qt::LeftEdge;
+    GestureRecognizer* gestureRecognizer = nullptr;
+    GeometryListener* listener = nullptr;
+
+    // a skin hint ???
+    qreal dragMargin = QGuiApplication::styleHints()->startDragDistance();
 };
 
 QskDrawer::QskDrawer( QQuickItem* parentItem )
     : Inherited ( parentItem )
     , m_data( new PrivateData )
 {
+#if 1
     setZ( 1 );
+#endif
+
+    setOverlay( true );
+    setPolishOnResize( true );
 
     setPopupFlag( PopupFlag::CloseOnPressOutside, true );
+    setFaderAspect( Panel | QskAspect::Position | QskAspect::Metric );
 
-    m_data->contentBox = new QskBox(this);
-    m_data->contentBox->setSubcontrolProxy( QskBox::Panel, Panel );
-    m_data->contentBox->setPanel( true );
+    /*
+        The drawer wants to be on top of the parent - not being
+        layouted into its layoutRect(). So we opt out and do
+        the layout updates manually.
+     */
+    setPlacementPolicy( QskPlacementPolicy::Ignore );
+    if ( parentItem )
+    {
+        m_data->listener = new GeometryListener( parentItem, this );
+        qskCatchMouseEvents( parentItem );
+    }
 
-    setSubcontrolProxy( Inherited::Overlay, Overlay );
+    m_data->gestureRecognizer = new GestureRecognizer( this );
 
-    setFaderAspect( Panel | QskAspect::Metric );
 
-    connect(this, &QskDrawer::closed, this, [this]() {
-        startTransition( Panel | QskAspect::Metric,
-            animationHint( Panel | QskAspect::Position ),
-            0.0, 1.0 );
-    });
+    connect( this, &QskPopup::openChanged, this, &QskDrawer::setFading );
+
+    /*
+        When the content of the parentItem does not fit we will have
+        a difference between fading and normal state. To overcome this problem
+        we need to expand the rectangle of the QQuickDefaultClipNode manually to
+        the window borders: TODO ...
+     */
+    connect( this, &QskPopup::fadingChanged, parentItem, &QQuickItem::setClip );
 }
 
 QskDrawer::~QskDrawer()
 {
+    delete m_data->listener;
 }
 
 Qt::Edge QskDrawer::edge() const
@@ -60,79 +270,166 @@ void QskDrawer::setEdge( Qt::Edge edge )
     edgeChanged( edge );
 }
 
-void QskDrawer::setContent( QskControl* content )
+void QskDrawer::setDragMargin( qreal margin )
 {
-    content->setParentItem( m_data->contentBox );
-    if ( content->parent() == nullptr )
-        content->setParent( m_data->contentBox );
+    margin = std::max( margin, 0.0 );
 
-    m_data->content = content;
+    if ( margin != m_data->dragMargin )
+    {
+        m_data->dragMargin = margin;
+        Q_EMIT dragMarginChanged( margin );
+    }
+}
+
+qreal QskDrawer::dragMargin() const
+{
+    return m_data->dragMargin;
+}
+
+void QskDrawer::gestureEvent( QskGestureEvent* event )
+{
+    if ( event->gesture()->type() == QskGesture::Pan )
+    {
+        /*
+            For the moment we treat the gesture like a swipe gesture
+            without dragging the drawer when moving the mouse. TODO ...
+         */
+        const auto gesture = static_cast< const QskPanGesture* >( event->gesture().get() );
+        if ( gesture->state() == QskGesture::Finished )
+        {
+            if ( qskCheckDirection( m_data->edge, gesture ) )
+                open();
+        }
+
+        return;
+    }
+
+    Inherited::gestureEvent( event );
+}
+
+QSizeF QskDrawer::layoutSizeHint(
+    Qt::SizeHint which, const QSizeF& constraint ) const
+{
+    if ( which == Qt::MaximumSize )
+        return QSizeF();
+
+    qreal w = -1.0;
+    qreal h = -1.0;
+
+    const auto children = childItems();
+
+    for ( const auto child : children )
+    {
+        if ( !qskIsVisibleToLayout( child ) )
+            continue;
+
+        const auto policy = qskSizePolicy( child );
+
+        if ( constraint.width() >= 0.0 && policy.isConstrained( Qt::Vertical ) )
+        {
+            const auto hint = qskSizeConstraint( child, which, constraint );
+            h = qMax( h, hint.height() );
+        }
+        else if ( constraint.height() >= 0.0 && policy.isConstrained( Qt::Horizontal ) )
+        {
+            const auto hint = qskSizeConstraint( child, which, constraint );
+            w = qMax( w, hint.width() );
+        }
+        else
+        {
+            const auto hint = qskSizeConstraint( child, which );
+
+            w = qMax( w, hint.width() );
+            h = qMax( h, hint.height() );
+        }
+    }
+
+    return QSizeF( w, h );
 }
 
 void QskDrawer::updateLayout()
 {
-    if ( !isOpen() && !isFading() )
+    if ( !( isOpen() || isFading() ) || size().isEmpty() )
         return;
 
-    const auto padding = paddingHint( Panel );
+    auto dx = 0.0;
+    auto dy = 0.0;
 
-    auto contentSize = m_data->content->preferredSize();
-    contentSize = contentSize.grownBy( padding );
-
-    const auto parentSize = parentItem()->size();
-
-    switch( m_data->edge )
+    if ( isFading() )
     {
-        case Qt::Edge::LeftEdge:
+        const auto f = metric( faderAspect() );
+
+        switch( m_data->edge )
         {
-            qreal x = metric( faderAspect() ) * contentSize.width() * -1.0;
+            case Qt::LeftEdge:
+                dx = -f * width();
+                break;
 
-            qskSetItemGeometry( m_data->contentBox,
-                x, 0, contentSize.width(), parentSize.height() );
-            break;
-        }
-        case Qt::Edge::RightEdge:
-        {
-            qreal x = ( metric( faderAspect() ) * contentSize.width() )
-                + parentSize.width() - contentSize.width();
+            case Qt::RightEdge:
+                dx = f * width();
+                break;
 
-            qskSetItemGeometry( m_data->contentBox,
-                x, 0, contentSize.width(), parentSize.height() );
-            break;
-        }
+            case Qt::TopEdge:
+                dy = -f * height();
+                break;
 
-        case Qt::Edge::TopEdge:
-        {
-            qreal y = metric( faderAspect() ) * contentSize.height();
-
-            qskSetItemGeometry( m_data->contentBox,
-                0, -y, parentSize.width(), contentSize.height() );
-            break;
-        }
-
-        case Qt::Edge::BottomEdge:
-        {
-            qreal y = metric( faderAspect() ) * contentSize.height() + parentSize.height() -
-                contentSize.height();
-
-            qskSetItemGeometry( m_data->contentBox,
-                0, y, parentSize.width(), contentSize.height() );
-            break;
+            case Qt::BottomEdge:
+                dy = f * height();
+                break;
         }
     }
 
-    m_data->content->setGeometry( QPointF( padding.left(), padding.top() ),
-        m_data->contentBox->size().shrunkBy( padding ) );
+    const QRectF layoutRect( dx, dy, width(), height() );
 
-    Inherited::updateLayout();
+    const auto children = childItems();
+    for ( auto child : children )
+    {
+        if ( qskIsAdjustableByLayout( child ) )
+        {
+            const auto r = qskConstrainedItemRect( child, layoutRect );
+            qskSetItemGeometry( child, r );
+        }
+    }
 }
 
-void QskDrawer::aboutToShow()
+void QskDrawer::itemChange( QQuickItem::ItemChange change,
+    const QQuickItem::ItemChangeData& value )
 {
-    startTransition( Panel | QskAspect::Metric,
-        animationHint( Panel | QskAspect::Position ), 1.0, 0.0 );
+    Inherited::itemChange( change, value );
 
-    Inherited::aboutToShow();
+    switch( static_cast< int >( change ) )
+    {
+        case QQuickItem::ItemParentHasChanged:
+        {
+            if ( parentItem() )
+                qskCatchMouseEvents( parentItem() );
+
+            Q_FALLTHROUGH();
+        }
+        case QQuickItem::ItemVisibleHasChanged:
+        {
+            delete m_data->listener;
+            m_data->listener = nullptr;
+
+            if ( parentItem() && isVisible() )
+                m_data->listener = new GeometryListener( parentItem(), this );
+
+            break;
+        }
+    }
+}
+
+void QskDrawer::setFading( bool on )
+{
+    const qreal from = on ? 1.0 : 0.0;
+    const qreal to = on ? 0.0 : 1.0;
+
+    const auto aspect = faderAspect();
+
+    auto hint = animationHint( aspect );
+    hint.updateFlags = QskAnimationHint::UpdatePolish | QskAnimationHint::UpdateNode;
+
+    startTransition( aspect, hint, from, to );
 }
 
 #include "moc_QskDrawer.cpp"

src/controls/QskDrawer.h

@@ -1,3 +1,8 @@
+/******************************************************************************
+ * QSkinny - Copyright (C) 2016 Uwe Rathmann
+ *           SPDX-License-Identifier: BSD-3-Clause
+ *****************************************************************************/
+
 #ifndef QSK_DRAWER_H
 #define QSK_DRAWER_H
 
@@ -12,8 +17,11 @@ class QSK_EXPORT QskDrawer : public QskPopup
 
     Q_PROPERTY( Qt::Edge edge READ edge WRITE setEdge NOTIFY edgeChanged )
 
+    Q_PROPERTY( qreal dragMargin READ dragMargin
+        WRITE setDragMargin NOTIFY dragMarginChanged )
+
   public:
-    QSK_SUBCONTROLS( Panel, Overlay )
+    QSK_SUBCONTROLS( Panel )
 
     QskDrawer( QQuickItem* = nullptr );
     ~QskDrawer() override;
@@ -21,17 +29,24 @@ class QSK_EXPORT QskDrawer : public QskPopup
     void setEdge( Qt::Edge );
     Qt::Edge edge() const;
 
-    void updateLayout() override;
+    void setDragMargin( qreal );
+    qreal dragMargin() const;
 
-    void setContent( QskControl* );
+    void updateLayout() override;
 
   Q_SIGNALS:
     void edgeChanged( Qt::Edge );
+    void dragMarginChanged( qreal );
 
   protected:
-    void aboutToShow() override;
+    void itemChange( ItemChange, const ItemChangeData& ) override;
+
+    QSizeF layoutSizeHint( Qt::SizeHint, const QSizeF& ) const override;
+    void gestureEvent( QskGestureEvent* ) override;
 
   private:
+    void setFading( bool );
+
     class PrivateData;
     std::unique_ptr< PrivateData > m_data;
 };