Allow interaction with folder/files with the stylus again

[dolphin.git] / src / kitemviews / kitemlistview.cpp

diff --git a/src/kitemviews/kitemlistview.cpp b/src/kitemviews/kitemlistview.cpp
index 5dd21615eb50a68a7d38bac8a375d23cd94886b7..4d9bf083f2f056ff4ffde35c6d86ad16d55d52e9 100644 (file)
--- a/src/kitemviews/kitemlistview.cpp
+++ b/src/kitemviews/kitemlistview.cpp
@@ -1,23 +1,10 @@
-/***************************************************************************
- *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
- *                                                                         *
- *   Based on the Itemviews NG project from Trolltech Labs                 *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program is distributed in the hope that it will be useful,       *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
- ***************************************************************************/
+/*
+ * SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
+ *
+ * Based on the Itemviews NG project from Trolltech Labs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
 
 #include "kitemlistview.h"
 
@@ -37,6 +24,7 @@
 #include <QElapsedTimer>
 #include <QGraphicsSceneMouseEvent>
 #include <QGraphicsView>
+#include <QPropertyAnimation>
 #include <QStyleOptionRubberBand>
 #include <QTimer>
 
@@ -93,14 +81,17 @@ KItemListView::KItemListView(QGraphicsWidget* parent) :
     m_oldMaximumItemOffset(0),
     m_skipAutoScrollForRubberBand(false),
     m_rubberBand(nullptr),
+    m_tapAndHoldIndicator(nullptr),
     m_mousePos(),
     m_autoScrollIncrement(0),
     m_autoScrollTimer(nullptr),
     m_header(nullptr),
     m_headerWidget(nullptr),
+    m_indicatorAnimation(nullptr),
     m_dropIndicator()
 {
     setAcceptHoverEvents(true);
+    setAcceptTouchEvents(true);
 
     m_sizeHintResolver = new KItemListSizeHintResolver(this);
 
@@ -118,6 +109,23 @@ KItemListView::KItemListView(QGraphicsWidget* parent) :
     m_rubberBand = new KItemListRubberBand(this);
     connect(m_rubberBand, &KItemListRubberBand::activationChanged, this, &KItemListView::slotRubberBandActivationChanged);
 
+    m_tapAndHoldIndicator = new KItemListRubberBand(this);
+    m_indicatorAnimation = new QPropertyAnimation(m_tapAndHoldIndicator, "endPosition", this);
+    connect(m_tapAndHoldIndicator, &KItemListRubberBand::activationChanged, this, [this](bool active) {
+        if (active) {
+            m_indicatorAnimation->setDuration(150);
+            m_indicatorAnimation->setStartValue(QPointF(1, 1));
+            m_indicatorAnimation->setEndValue(QPointF(40, 40));
+            m_indicatorAnimation->start();
+        }
+        update();
+    });
+    connect(m_tapAndHoldIndicator, &KItemListRubberBand::endPositionChanged, this, [this]() {
+        if (m_tapAndHoldIndicator->isActive()) {
+            update();
+        }
+    });
+
     m_headerWidget = new KItemListHeaderWidget(this);
     m_headerWidget->setVisible(false);
 
@@ -334,11 +342,6 @@ QSizeF KItemListView::itemSize() const
     return m_itemSize;
 }
 
-QSizeF KItemListView::itemSizeHint() const
-{
-    return m_sizeHintResolver->minSizeHint();
-}
-
 const KItemListStyleOption& KItemListView::styleOption() const
 {
     return m_styleOption;
@@ -676,10 +679,22 @@ void KItemListView::paint(QPainter* painter, const QStyleOptionGraphicsItem* opt
         style()->drawControl(QStyle::CE_RubberBand, &opt, painter);
     }
 
+    if (m_tapAndHoldIndicator->isActive()) {
+        const QPointF indicatorSize = m_tapAndHoldIndicator->endPosition();
+        const QRectF rubberBandRect = QRectF(m_tapAndHoldIndicator->startPosition() - indicatorSize,
+                                    (m_tapAndHoldIndicator->startPosition()) + indicatorSize).normalized();
+        QStyleOptionRubberBand opt;
+        initStyleOption(&opt);
+        opt.shape = QRubberBand::Rectangle;
+        opt.opaque = false;
+        opt.rect = rubberBandRect.toRect();
+        style()->drawControl(QStyle::CE_RubberBand, &opt, painter);
+    }
+
     if (!m_dropIndicator.isEmpty()) {
         const QRectF r = m_dropIndicator.toRect();
 
-        QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
+        QColor color = palette().brush(QPalette::Normal, QPalette::Text).color();
         painter->setPen(color);
 
         // TODO: The following implementation works only for a vertical scroll-orientation