X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/58ab93541c70de4fa7cbb90dc3423cfec556dc38..d0c71a1435bc9d:/src/kitemviews/kitemlistcontroller.cpp diff --git a/src/kitemviews/kitemlistcontroller.cpp b/src/kitemviews/kitemlistcontroller.cpp index afa70e60c..1733eeab5 100644 --- a/src/kitemviews/kitemlistcontroller.cpp +++ b/src/kitemviews/kitemlistcontroller.cpp @@ -1,48 +1,90 @@ -/*************************************************************************** - * Copyright (C) 2011 by Peter Penz * - * * - * Based on the Itemviews NG project from Trolltech Labs: * - * http://qt.gitorious.org/qt-labs/itemviews-ng * - * * - * 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 + * SPDX-FileCopyrightText: 2012 Frank Reininghaus + * + * Based on the Itemviews NG project from Trolltech Labs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ #include "kitemlistcontroller.h" -#include "kitemlistview.h" #include "kitemlistselectionmanager.h" +#include "kitemlistview.h" +#include "private/kitemlistkeyboardsearchmanager.h" +#include "private/kitemlistrubberband.h" +#include "private/ktwofingerswipe.h" +#include "private/ktwofingertap.h" +#include "views/draganddrophelper.h" -#include +#include +#include +#include +#include +#include #include -#include +#include +#include +#include -#include - -KItemListController::KItemListController(QObject* parent) : +KItemListController::KItemListController(KItemModelBase* model, KItemListView* view, QObject* parent) : QObject(parent), + m_singleClickActivationEnforced(false), + m_selectionTogglePressed(false), + m_clearSelectionIfItemsAreNotDragged(false), + m_isSwipeGesture(false), + m_dragActionOrRightClick(false), + m_scrollerIsScrolling(false), + m_pinchGestureInProgress(false), + m_mousePress(false), m_selectionBehavior(NoSelection), - m_model(0), - m_view(0), + m_autoActivationBehavior(ActivationAndExpansion), + m_mouseDoubleClickAction(ActivateItemOnly), + m_model(nullptr), + m_view(nullptr), m_selectionManager(new KItemListSelectionManager(this)), - m_pressedIndex(-1) + m_keyboardManager(new KItemListKeyboardSearchManager(this)), + m_pressedIndex(-1), + m_pressedMousePos(), + m_autoActivationTimer(nullptr), + m_swipeGesture(Qt::CustomGesture), + m_twoFingerTapGesture(Qt::CustomGesture), + m_lastSource(Qt::MouseEventNotSynthesized), + m_oldSelection(), + m_keyboardAnchorIndex(-1), + m_keyboardAnchorPos(0) { + connect(m_keyboardManager, &KItemListKeyboardSearchManager::changeCurrentItem, + this, &KItemListController::slotChangeCurrentItem); + connect(m_selectionManager, &KItemListSelectionManager::currentChanged, + m_keyboardManager, &KItemListKeyboardSearchManager::slotCurrentChanged); + connect(m_selectionManager, &KItemListSelectionManager::selectionChanged, + m_keyboardManager, &KItemListKeyboardSearchManager::slotSelectionChanged); + + m_autoActivationTimer = new QTimer(this); + m_autoActivationTimer->setSingleShot(true); + m_autoActivationTimer->setInterval(-1); + connect(m_autoActivationTimer, &QTimer::timeout, this, &KItemListController::slotAutoActivationTimeout); + + setModel(model); + setView(view); + + m_swipeGesture = QGestureRecognizer::registerRecognizer(new KTwoFingerSwipeRecognizer()); + m_twoFingerTapGesture = QGestureRecognizer::registerRecognizer(new KTwoFingerTapRecognizer()); + view->grabGesture(m_swipeGesture); + view->grabGesture(m_twoFingerTapGesture); + view->grabGesture(Qt::TapGesture); + view->grabGesture(Qt::TapAndHoldGesture); + view->grabGesture(Qt::PinchGesture); } KItemListController::~KItemListController() { + setView(nullptr); + Q_ASSERT(!m_view); + + setModel(nullptr); + Q_ASSERT(!m_model); } void KItemListController::setModel(KItemModelBase* model) @@ -52,7 +94,14 @@ void KItemListController::setModel(KItemModelBase* model) } KItemModelBase* oldModel = m_model; + if (oldModel) { + oldModel->deleteLater(); + } + m_model = model; + if (m_model) { + m_model->setParent(this); + } if (m_view) { m_view->setModel(m_model); @@ -80,11 +129,19 @@ void KItemListController::setView(KItemListView* view) } KItemListView* oldView = m_view; + if (oldView) { + disconnect(oldView, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged); + oldView->deleteLater(); + } + m_view = view; if (m_view) { + m_view->setParent(this); m_view->setController(this); m_view->setModel(m_model); + connect(m_view, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged); + updateExtendedSelectionRegion(); } emit viewChanged(m_view, oldView); @@ -98,6 +155,7 @@ KItemListView* KItemListController::view() const void KItemListController::setSelectionBehavior(SelectionBehavior behavior) { m_selectionBehavior = behavior; + updateExtendedSelectionRegion(); } KItemListController::SelectionBehavior KItemListController::selectionBehavior() const @@ -105,272 +163,950 @@ KItemListController::SelectionBehavior KItemListController::selectionBehavior() return m_selectionBehavior; } -bool KItemListController::showEvent(QShowEvent* event) +void KItemListController::setAutoActivationBehavior(AutoActivationBehavior behavior) { - Q_UNUSED(event); - return false; + m_autoActivationBehavior = behavior; } -bool KItemListController::hideEvent(QHideEvent* event) +KItemListController::AutoActivationBehavior KItemListController::autoActivationBehavior() const { - Q_UNUSED(event); - return false; + return m_autoActivationBehavior; } -bool KItemListController::keyPressEvent(QKeyEvent* event) +void KItemListController::setMouseDoubleClickAction(MouseDoubleClickAction action) { - switch (event->key()) { - case Qt::Key_Home: - m_selectionManager->setCurrentItem(0); - break; - case Qt::Key_End: - m_selectionManager->setCurrentItem(m_model->count() - 1); - break; + m_mouseDoubleClickAction = action; +} + +KItemListController::MouseDoubleClickAction KItemListController::mouseDoubleClickAction() const +{ + return m_mouseDoubleClickAction; +} + +int KItemListController::indexCloseToMousePressedPosition() const +{ + QHashIterator it(m_view->m_visibleGroups); + while (it.hasNext()) { + it.next(); + KItemListGroupHeader *groupHeader = it.value(); + const QPointF mappedToGroup = groupHeader->mapFromItem(nullptr, m_pressedMousePos); + if (groupHeader->contains(mappedToGroup)) { + return it.key()->index(); + } } - return false; + return -1; } -bool KItemListController::inputMethodEvent(QInputMethodEvent* event) +void KItemListController::setAutoActivationDelay(int delay) { - Q_UNUSED(event); - return false; + m_autoActivationTimer->setInterval(delay); } -bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform) +int KItemListController::autoActivationDelay() const { - const QPointF pos = transform.map(event->pos()); - m_pressedIndex = m_view->itemAt(pos); + return m_autoActivationTimer->interval(); +} - if (m_view->isAboveExpansionToggle(m_pressedIndex, pos)) { - return true; +void KItemListController::setSingleClickActivationEnforced(bool singleClick) +{ + m_singleClickActivationEnforced = singleClick; +} + +bool KItemListController::singleClickActivationEnforced() const +{ + return m_singleClickActivationEnforced; +} + +bool KItemListController::keyPressEvent(QKeyEvent* event) +{ + int index = m_selectionManager->currentItem(); + int key = event->key(); + + // Handle the expanding/collapsing of items + if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) { + if (key == Qt::Key_Right) { + if (m_model->setExpanded(index, true)) { + return true; + } + } else if (key == Qt::Key_Left) { + if (m_model->setExpanded(index, false)) { + return true; + } + } } const bool shiftPressed = event->modifiers() & Qt::ShiftModifier; const bool controlPressed = event->modifiers() & Qt::ControlModifier; const bool shiftOrControlPressed = shiftPressed || controlPressed; + const bool navigationPressed = key == Qt::Key_Home || key == Qt::Key_End || + key == Qt::Key_PageUp || key == Qt::Key_PageDown || + key == Qt::Key_Up || key == Qt::Key_Down || + key == Qt::Key_Left || key == Qt::Key_Right; - if (!shiftOrControlPressed || m_selectionBehavior == SingleSelection) { - m_selectionManager->clearSelection(); + const int itemCount = m_model->count(); + + // For horizontal scroll orientation, transform + // the arrow keys to simplify the event handling. + if (m_view->scrollOrientation() == Qt::Horizontal) { + switch (key) { + case Qt::Key_Up: key = Qt::Key_Left; break; + case Qt::Key_Down: key = Qt::Key_Right; break; + case Qt::Key_Left: key = Qt::Key_Up; break; + case Qt::Key_Right: key = Qt::Key_Down; break; + default: break; + } } - if (!shiftPressed) { - // Finish the anchored selection before the current index is changed - m_selectionManager->endAnchoredSelection(); + const bool selectSingleItem = m_selectionBehavior != NoSelection && itemCount == 1 && navigationPressed; + + if (selectSingleItem) { + const int current = m_selectionManager->currentItem(); + m_selectionManager->setSelected(current); + return true; } - if (m_pressedIndex >= 0) { - m_selectionManager->setCurrentItem(m_pressedIndex); + switch (key) { + case Qt::Key_Home: + index = 0; + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); + break; - switch (m_selectionBehavior) { - case NoSelection: - return true; - case SingleSelection: - m_selectionManager->setSelected(m_pressedIndex); - return true; - case MultiSelection: - if (controlPressed) { - m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle); - m_selectionManager->beginAnchoredSelection(m_pressedIndex); + case Qt::Key_End: + index = itemCount - 1; + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); + break; + + case Qt::Key_Left: + if (index > 0) { + const int expandedParentsCount = m_model->expandedParentsCount(index); + if (expandedParentsCount == 0) { + --index; + } else { + // Go to the parent of the current item. + do { + --index; + } while (index > 0 && m_model->expandedParentsCount(index) == expandedParentsCount); } - else { - if (shiftPressed && m_selectionManager->isAnchoredSelectionActive()) { - // The anchored selection is continued automatically by calling - // m_selectionManager->setCurrentItem(m_pressedIndex), see above -> nothing more to do here - return true; - } + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); + } + break; - // Select the pressed item and start a new anchored selection - m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select); - m_selectionManager->beginAnchoredSelection(m_pressedIndex); + case Qt::Key_Right: + if (index < itemCount - 1) { + ++index; + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); + } + break; + + case Qt::Key_Up: + updateKeyboardAnchor(); + index = previousRowIndex(index); + break; + + case Qt::Key_Down: + updateKeyboardAnchor(); + index = nextRowIndex(index); + break; + + case Qt::Key_PageUp: + if (m_view->scrollOrientation() == Qt::Horizontal) { + // The new current index should correspond to the first item in the current column. + int newIndex = qMax(index - 1, 0); + while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() < m_view->itemRect(index).topLeft().y()) { + index = newIndex; + newIndex = qMax(index - 1, 0); } + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); + } else { + const qreal currentItemBottom = m_view->itemRect(index).bottomLeft().y(); + const qreal height = m_view->geometry().height(); + + // The new current item should be the first item in the current + // column whose itemRect's top coordinate is larger than targetY. + const qreal targetY = currentItemBottom - height; + + updateKeyboardAnchor(); + int newIndex = previousRowIndex(index); + do { + index = newIndex; + updateKeyboardAnchor(); + newIndex = previousRowIndex(index); + } while (m_view->itemRect(newIndex).topLeft().y() > targetY && newIndex != index); } + break; - return true; + case Qt::Key_PageDown: + if (m_view->scrollOrientation() == Qt::Horizontal) { + // The new current index should correspond to the last item in the current column. + int newIndex = qMin(index + 1, m_model->count() - 1); + while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() > m_view->itemRect(index).topLeft().y()) { + index = newIndex; + newIndex = qMin(index + 1, m_model->count() - 1); + } + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); + } else { + const qreal currentItemTop = m_view->itemRect(index).topLeft().y(); + const qreal height = m_view->geometry().height(); + + // The new current item should be the last item in the current + // column whose itemRect's bottom coordinate is smaller than targetY. + const qreal targetY = currentItemTop + height; + + updateKeyboardAnchor(); + int newIndex = nextRowIndex(index); + do { + index = newIndex; + updateKeyboardAnchor(); + newIndex = nextRowIndex(index); + } while (m_view->itemRect(newIndex).bottomLeft().y() < targetY && newIndex != index); + } + break; + + case Qt::Key_Enter: + case Qt::Key_Return: { + const KItemSet selectedItems = m_selectionManager->selectedItems(); + if (selectedItems.count() >= 2) { + emit itemsActivated(selectedItems); + } else if (selectedItems.count() == 1) { + emit itemActivated(selectedItems.first()); + } else { + emit itemActivated(index); + } + break; } - return false; -} + case Qt::Key_Menu: { + // Emit the signal itemContextMenuRequested() in case if at least one + // item is selected. Otherwise the signal viewContextMenuRequested() will be emitted. + const KItemSet selectedItems = m_selectionManager->selectedItems(); + int index = -1; + if (selectedItems.count() >= 2) { + const int currentItemIndex = m_selectionManager->currentItem(); + index = selectedItems.contains(currentItemIndex) + ? currentItemIndex : selectedItems.first(); + } else if (selectedItems.count() == 1) { + index = selectedItems.first(); + } -bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform) -{ - Q_UNUSED(event); - Q_UNUSED(transform); - return false; -} + if (index >= 0) { + const QRectF contextRect = m_view->itemContextRect(index); + const QPointF pos(m_view->scene()->views().first()->mapToGlobal(contextRect.bottomRight().toPoint())); + emit itemContextMenuRequested(index, pos); + } else { + emit viewContextMenuRequested(QCursor::pos()); + } + break; + } -bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform) -{ - if (m_view) { - const QPointF pos = transform.map(event->pos()); - const int index = m_view->itemAt(pos); - const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier || event->modifiers() & Qt::ControlModifier; - - if (index >= 0 && index == m_pressedIndex) { - // The release event is done above the same item as the press event - bool emitItemClicked = true; - if (event->button() & Qt::LeftButton) { - if (m_view->isAboveExpansionToggle(index, pos)) { - emit itemExpansionToggleClicked(index); - emitItemClicked = false; - } - else if (shiftOrControlPressed) { - // The mouse click should only update the selection, not trigger the item - emitItemClicked = false; + case Qt::Key_Escape: + if (m_selectionBehavior != SingleSelection) { + m_selectionManager->clearSelection(); + } + m_keyboardManager->cancelSearch(); + emit escapePressed(); + break; + + case Qt::Key_Space: + if (m_selectionBehavior == MultiSelection) { + if (controlPressed) { + // Toggle the selection state of the current item. + m_selectionManager->endAnchoredSelection(); + m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle); + m_selectionManager->beginAnchoredSelection(index); + break; + } else { + // Select the current item if it is not selected yet. + const int current = m_selectionManager->currentItem(); + if (!m_selectionManager->isSelected(current)) { + m_selectionManager->setSelected(current); + break; } } + } + Q_FALLTHROUGH(); // fall through to the default case and add the Space to the current search string. + default: + m_keyboardManager->addKeys(event->text()); + // Make sure unconsumed events get propagated up the chain. #302329 + event->ignore(); + return false; + } - if (emitItemClicked) { - emit itemClicked(index, event->button()); - } - } else if (!shiftOrControlPressed) { + if (m_selectionManager->currentItem() != index) { + switch (m_selectionBehavior) { + case NoSelection: + m_selectionManager->setCurrentItem(index); + break; + + case SingleSelection: + m_selectionManager->setCurrentItem(index); m_selectionManager->clearSelection(); + m_selectionManager->setSelected(index, 1); + break; + + case MultiSelection: + if (controlPressed) { + m_selectionManager->endAnchoredSelection(); + } + + m_selectionManager->setCurrentItem(index); + + if (!shiftOrControlPressed) { + m_selectionManager->clearSelection(); + m_selectionManager->setSelected(index, 1); + } + + if (!shiftPressed) { + m_selectionManager->beginAnchoredSelection(index); + } + break; } } - m_pressedIndex = -1; - return false; + if (navigationPressed) { + m_view->scrollToItem(index); + } + return true; } -bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform) +void KItemListController::slotChangeCurrentItem(const QString& text, bool searchFromNextItem) { - Q_UNUSED(event); - Q_UNUSED(transform); - return false; -} + if (!m_model || m_model->count() == 0) { + return; + } + int index; + if (searchFromNextItem) { + const int currentIndex = m_selectionManager->currentItem(); + index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count()); + } else { + index = m_model->indexForKeyboardSearch(text, 0); + } + if (index >= 0) { + m_selectionManager->setCurrentItem(index); -bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) -{ - Q_UNUSED(event); - Q_UNUSED(transform); - return false; -} + if (m_selectionBehavior != NoSelection) { + m_selectionManager->replaceSelection(index); + m_selectionManager->beginAnchoredSelection(index); + } -bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) -{ - Q_UNUSED(event); - Q_UNUSED(transform); - return false; + m_view->scrollToItem(index); + } } -bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) +void KItemListController::slotAutoActivationTimeout() { - Q_UNUSED(event); - Q_UNUSED(transform); - return false; -} + if (!m_model || !m_view) { + return; + } -bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) -{ - Q_UNUSED(event); - Q_UNUSED(transform); - return false; + const int index = m_autoActivationTimer->property("index").toInt(); + if (index < 0 || index >= m_model->count()) { + return; + } + + /* m_view->isUnderMouse() fixes a bug in the Folder-View-Panel and in the + * Places-Panel. + * + * Bug: When you drag a file onto a Folder-View-Item or a Places-Item and + * then move away before the auto-activation timeout triggers, than the + * item still becomes activated/expanded. + * + * See Bug 293200 and 305783 + */ + if (m_model->supportsDropping(index) && m_view->isUnderMouse()) { + if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) { + const bool expanded = m_model->isExpanded(index); + m_model->setExpanded(index, !expanded); + } else if (m_autoActivationBehavior != ExpansionOnly) { + emit itemActivated(index); + } + } } -bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform) +bool KItemListController::inputMethodEvent(QInputMethodEvent* event) { - Q_UNUSED(event); - Q_UNUSED(transform); + Q_UNUSED(event) return false; } -bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform) +bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform) { - // The implementation assumes that only one item can get hovered no matter - // whether they overlap or not. + m_mousePress = true; + m_lastSource = event->source(); - Q_UNUSED(transform); - if (!m_model || !m_view) { + if (event->source() == Qt::MouseEventSynthesizedByQt) { return false; } - // Search the previously hovered item that might get unhovered - KItemListWidget* unhoveredWidget = 0; - foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { - if (widget->isHovered()) { - unhoveredWidget = widget; - break; - } + if (!m_view) { + return false; } - // Search the currently hovered item - KItemListWidget* hoveredWidget = 0; - foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { - const QPointF mappedPos = widget->mapFromItem(m_view, event->pos()); + m_pressedMousePos = transform.map(event->pos()); + m_pressedIndex = m_view->itemAt(m_pressedMousePos); - const bool hovered = widget->contains(mappedPos) && - !widget->expansionToggleRect().contains(mappedPos) && - !widget->selectionToggleRect().contains(mappedPos); - if (hovered) { - hoveredWidget = widget; - break; - } + const Qt::MouseButtons buttons = event->buttons(); + + if (!onPress(event->screenPos(), event->pos(), event->modifiers(), buttons)) { + startRubberBand(); + return false; + } + + if (buttons & (Qt::BackButton | Qt::ForwardButton)) { + // Do not select items when clicking the back/forward buttons, see + // https://bugs.kde.org/show_bug.cgi?id=327412. + return true; + } + + return true; +} + +bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform) +{ + if (!m_view) { + return false; } - if (unhoveredWidget != hoveredWidget) { - if (unhoveredWidget) { - unhoveredWidget->setHovered(false); - emit itemUnhovered(unhoveredWidget->index()); + if (m_view->m_tapAndHoldIndicator->isActive()) { + m_view->m_tapAndHoldIndicator->setActive(false); + } + + if (event->source() == Qt::MouseEventSynthesizedByQt && !m_dragActionOrRightClick) { + return false; + } + + if (m_pressedIndex >= 0) { + // Check whether a dragging should be started + if (event->buttons() & Qt::LeftButton) { + const QPointF pos = transform.map(event->pos()); + if ((pos - m_pressedMousePos).manhattanLength() >= QApplication::startDragDistance()) { + if (!m_selectionManager->isSelected(m_pressedIndex)) { + // Always assure that the dragged item gets selected. Usually this is already + // done on the mouse-press event, but when using the selection-toggle on a + // selected item the dragged item is not selected yet. + m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle); + } else { + // A selected item has been clicked to drag all selected items + // -> the selection should not be cleared when the mouse button is released. + m_clearSelectionIfItemsAreNotDragged = false; + } + startDragging(); + m_mousePress = false; + } } + } else { + KItemListRubberBand* rubberBand = m_view->rubberBand(); + if (rubberBand->isActive()) { + QPointF endPos = transform.map(event->pos()); - if (hoveredWidget) { - hoveredWidget->setHovered(true); - emit itemHovered(hoveredWidget->index()); + // Update the current item. + const int newCurrent = m_view->itemAt(endPos); + if (newCurrent >= 0) { + // It's expected that the new current index is also the new anchor (bug 163451). + m_selectionManager->endAnchoredSelection(); + m_selectionManager->setCurrentItem(newCurrent); + m_selectionManager->beginAnchoredSelection(newCurrent); + } + + if (m_view->scrollOrientation() == Qt::Vertical) { + endPos.ry() += m_view->scrollOffset(); + if (m_view->itemSize().width() < 0) { + // Use a special rubberband for views that have only one column and + // expand the rubberband to use the whole width of the view. + endPos.setX(m_view->size().width()); + } + } else { + endPos.rx() += m_view->scrollOffset(); + } + rubberBand->setEndPosition(endPos); } } return false; } -bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform) +bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform) { - Q_UNUSED(event); - Q_UNUSED(transform); + m_mousePress = false; - if (!m_model || !m_view) { + if (!m_view) { return false; } - foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { - if (widget->isHovered()) { - widget->setHovered(false); - emit itemUnhovered(widget->index()); + if (m_view->m_tapAndHoldIndicator->isActive()) { + m_view->m_tapAndHoldIndicator->setActive(false); + } + + KItemListRubberBand* rubberBand = m_view->rubberBand(); + if (event->source() == Qt::MouseEventSynthesizedByQt && !rubberBand->isActive()) { + return false; + } + + emit mouseButtonReleased(m_pressedIndex, event->buttons()); + + return onRelease(transform.map(event->pos()), event->modifiers(), event->button(), false); +} + +bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform) +{ + const QPointF pos = transform.map(event->pos()); + const int index = m_view->itemAt(pos); + + // Expand item if desired - See Bug 295573 + if (m_mouseDoubleClickAction != ActivateItemOnly) { + if (m_view && m_model && m_view->supportsItemExpanding() && m_model->isExpandable(index)) { + const bool expanded = m_model->isExpanded(index); + m_model->setExpanded(index, !expanded); + } + } + + if (event->button() & Qt::RightButton) { + m_selectionManager->clearSelection(); + if (index >= 0) { + m_selectionManager->setSelected(index); + emit itemContextMenuRequested(index, event->screenPos()); + } else { + const QRectF headerBounds = m_view->headerBoundaries(); + if (headerBounds.contains(event->pos())) { + emit headerContextMenuRequested(event->screenPos()); + } else { + emit viewContextMenuRequested(event->screenPos()); + } } + return true; + } + + bool emitItemActivated = !(m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced) && + (event->button() & Qt::LeftButton) && + index >= 0 && index < m_model->count(); + if (emitItemActivated) { + emit itemActivated(index); } return false; } -bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform) +bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) { - Q_UNUSED(event); - Q_UNUSED(transform); + Q_UNUSED(event) + Q_UNUSED(transform) + + DragAndDropHelper::clearUrlListMatchesUrlCache(); + return false; } -bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform) +bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) { - Q_UNUSED(event); - Q_UNUSED(transform); + Q_UNUSED(event) + Q_UNUSED(transform) + + m_autoActivationTimer->stop(); + m_view->setAutoScroll(false); + m_view->hideDropIndicator(); + + KItemListWidget* widget = hoveredWidget(); + if (widget) { + widget->setHovered(false); + emit itemUnhovered(widget->index()); + } return false; } -bool KItemListController::processEvent(QEvent* event, const QTransform& transform) +bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) { - if (!event) { + if (!m_model || !m_view) { return false; } - switch (event->type()) { - case QEvent::KeyPress: - return keyPressEvent(static_cast(event)); - case QEvent::InputMethod: - return inputMethodEvent(static_cast(event)); - case QEvent::GraphicsSceneMousePress: - return mousePressEvent(static_cast(event), QTransform()); - case QEvent::GraphicsSceneMouseMove: - return mouseMoveEvent(static_cast(event), QTransform()); - case QEvent::GraphicsSceneMouseRelease: - return mouseReleaseEvent(static_cast(event), QTransform()); - case QEvent::GraphicsSceneWheel: + + QUrl hoveredDir = m_model->directory(); + KItemListWidget* oldHoveredWidget = hoveredWidget(); + + const QPointF pos = transform.map(event->pos()); + KItemListWidget* newHoveredWidget = widgetForPos(pos); + + if (oldHoveredWidget != newHoveredWidget) { + m_autoActivationTimer->stop(); + + if (oldHoveredWidget) { + oldHoveredWidget->setHovered(false); + emit itemUnhovered(oldHoveredWidget->index()); + } + } + + if (newHoveredWidget) { + bool droppingBetweenItems = false; + if (m_model->sortRole().isEmpty()) { + // The model supports inserting items between other items. + droppingBetweenItems = (m_view->showDropIndicator(pos) >= 0); + } + + const int index = newHoveredWidget->index(); + + if (m_model->isDir(index)) { + hoveredDir = m_model->url(index); + } + + if (!droppingBetweenItems) { + if (m_model->supportsDropping(index)) { + // Something has been dragged on an item. + m_view->hideDropIndicator(); + if (!newHoveredWidget->isHovered()) { + newHoveredWidget->setHovered(true); + emit itemHovered(index); + } + + if (!m_autoActivationTimer->isActive() && m_autoActivationTimer->interval() >= 0) { + m_autoActivationTimer->setProperty("index", index); + m_autoActivationTimer->start(); + } + } + } else { + m_autoActivationTimer->stop(); + if (newHoveredWidget && newHoveredWidget->isHovered()) { + newHoveredWidget->setHovered(false); + emit itemUnhovered(index); + } + } + } else { + m_view->hideDropIndicator(); + } + + if (DragAndDropHelper::urlListMatchesUrl(event->mimeData()->urls(), hoveredDir)) { + event->setDropAction(Qt::IgnoreAction); + event->ignore(); + } else { + event->setDropAction(event->proposedAction()); + event->accept(); + } + return false; +} + +bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform) +{ + if (!m_view) { + return false; + } + + m_autoActivationTimer->stop(); + m_view->setAutoScroll(false); + + const QPointF pos = transform.map(event->pos()); + + int dropAboveIndex = -1; + if (m_model->sortRole().isEmpty()) { + // The model supports inserting of items between other items. + dropAboveIndex = m_view->showDropIndicator(pos); + } + + if (dropAboveIndex >= 0) { + // Something has been dropped between two items. + m_view->hideDropIndicator(); + emit aboveItemDropEvent(dropAboveIndex, event); + } else if (!event->mimeData()->hasFormat(m_model->blacklistItemDropEventMimeType())) { + // Something has been dropped on an item or on an empty part of the view. + emit itemDropEvent(m_view->itemAt(pos), event); + } + + QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropEnd); + QAccessible::updateAccessibility(&accessibilityEvent); + + return true; +} + +bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform) +{ + Q_UNUSED(event) + Q_UNUSED(transform) + return false; +} + +bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform) +{ + Q_UNUSED(transform) + if (!m_model || !m_view) { + return false; + } + + KItemListWidget* oldHoveredWidget = hoveredWidget(); + const QPointF pos = transform.map(event->pos()); + KItemListWidget* newHoveredWidget = widgetForPos(pos); + + if (oldHoveredWidget != newHoveredWidget) { + if (oldHoveredWidget) { + oldHoveredWidget->setHovered(false); + emit itemUnhovered(oldHoveredWidget->index()); + } + + if (newHoveredWidget) { + newHoveredWidget->setHovered(true); + const QPointF mappedPos = newHoveredWidget->mapFromItem(m_view, pos); + newHoveredWidget->setHoverPosition(mappedPos); + emit itemHovered(newHoveredWidget->index()); + } + } else if (oldHoveredWidget) { + const QPointF mappedPos = oldHoveredWidget->mapFromItem(m_view, pos); + oldHoveredWidget->setHoverPosition(mappedPos); + } + + return false; +} + +bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform) +{ + Q_UNUSED(event) + Q_UNUSED(transform) + + m_mousePress = false; + + if (!m_model || !m_view) { + return false; + } + + foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { + if (widget->isHovered()) { + widget->setHovered(false); + emit itemUnhovered(widget->index()); + } + } + return false; +} + +bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform) +{ + Q_UNUSED(event) + Q_UNUSED(transform) + return false; +} + +bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform) +{ + Q_UNUSED(event) + Q_UNUSED(transform) + return false; +} + +bool KItemListController::gestureEvent(QGestureEvent* event, const QTransform& transform) +{ + if (!m_view) { + return false; + } + + //you can touch on different views at the same time, but only one QWidget gets a mousePressEvent + //we use this to get the right QWidget + //the only exception is a tap gesture with state GestureStarted, we need to reset some variable + if (!m_mousePress) { + if (QGesture* tap = event->gesture(Qt::TapGesture)) { + QTapGesture* tapGesture = static_cast(tap); + if (tapGesture->state() == Qt::GestureStarted) { + tapTriggered(tapGesture, transform); + } + } + return false; + } + + bool accepted = false; + + if (QGesture* tap = event->gesture(Qt::TapGesture)) { + tapTriggered(static_cast(tap), transform); + accepted = true; + } + if (event->gesture(Qt::TapAndHoldGesture)) { + tapAndHoldTriggered(event, transform); + accepted = true; + } + if (event->gesture(Qt::PinchGesture)) { + pinchTriggered(event, transform); + accepted = true; + } + if (event->gesture(m_swipeGesture)) { + swipeTriggered(event, transform); + accepted = true; + } + if (event->gesture(m_twoFingerTapGesture)) { + twoFingerTapTriggered(event, transform); + accepted = true; + } + return accepted; +} + +void KItemListController::tapTriggered(QTapGesture* tap, const QTransform& transform) +{ + static bool scrollerWasActive = false; + + if (tap->state() == Qt::GestureStarted) { + m_dragActionOrRightClick = false; + m_isSwipeGesture = false; + m_pinchGestureInProgress = false; + m_lastSource = Qt::MouseEventSynthesizedByQt; + scrollerWasActive = m_scrollerIsScrolling; + } + + if (tap->state() == Qt::GestureFinished) { + m_mousePress = false; + + //if at the moment of the gesture start the QScroller was active, the user made the tap + //to stop the QScroller and not to tap on an item + if (scrollerWasActive) { + return; + } + + if (m_view->m_tapAndHoldIndicator->isActive()) { + m_view->m_tapAndHoldIndicator->setActive(false); + } + + m_pressedMousePos = transform.map(tap->position()); + m_pressedIndex = m_view->itemAt(m_pressedMousePos); + + if (m_dragActionOrRightClick) { + onPress(tap->hotSpot().toPoint(), tap->position().toPoint(), Qt::NoModifier, Qt::RightButton); + onRelease(transform.map(tap->position()), Qt::NoModifier, Qt::RightButton, false); + m_dragActionOrRightClick = false; + } + else { + onPress(tap->hotSpot().toPoint(), tap->position().toPoint(), Qt::NoModifier, Qt::LeftButton); + onRelease(transform.map(tap->position()), Qt::NoModifier, Qt::LeftButton, true); + } + } +} + +void KItemListController::tapAndHoldTriggered(QGestureEvent* event, const QTransform& transform) +{ + + //the Qt TabAndHold gesture is triggerable with a mouse click, we don't want this + if (m_lastSource == Qt::MouseEventNotSynthesized) { + return; + } + + const QTapAndHoldGesture* tap = static_cast(event->gesture(Qt::TapAndHoldGesture)); + if (tap->state() == Qt::GestureFinished) { + //if a pinch gesture is in progress we don't want a TabAndHold gesture + if (m_pinchGestureInProgress) { + return; + } + m_pressedMousePos = transform.map(event->mapToGraphicsScene(tap->position())); + m_pressedIndex = m_view->itemAt(m_pressedMousePos); + + if (m_pressedIndex >= 0 && !m_selectionManager->isSelected(m_pressedIndex)) { + m_selectionManager->clearSelection(); + m_selectionManager->setSelected(m_pressedIndex); + } else if (m_pressedIndex == -1) { + m_selectionManager->clearSelection(); + startRubberBand(); + } + + emit scrollerStop(); + + m_view->m_tapAndHoldIndicator->setStartPosition(m_pressedMousePos); + m_view->m_tapAndHoldIndicator->setActive(true); + + m_dragActionOrRightClick = true; + } +} + +void KItemListController::pinchTriggered(QGestureEvent* event, const QTransform& transform) +{ + Q_UNUSED(transform) + + const QPinchGesture* pinch = static_cast(event->gesture(Qt::PinchGesture)); + const qreal sensitivityModifier = 0.2; + static qreal counter = 0; + + if (pinch->state() == Qt::GestureStarted) { + m_pinchGestureInProgress = true; + counter = 0; + } + if (pinch->state() == Qt::GestureUpdated) { + //if a swipe gesture was recognized or in progress, we don't want a pinch gesture to change the zoom + if (m_isSwipeGesture) { + return; + } + counter = counter + (pinch->scaleFactor() - 1); + if (counter >= sensitivityModifier) { + emit increaseZoom(); + counter = 0; + } else if (counter <= -sensitivityModifier) { + emit decreaseZoom(); + counter = 0; + } + } +} + +void KItemListController::swipeTriggered(QGestureEvent* event, const QTransform& transform) +{ + Q_UNUSED(transform) + + const KTwoFingerSwipe* swipe = static_cast(event->gesture(m_swipeGesture)); + + if (!swipe) { + return; + } + if (swipe->state() == Qt::GestureStarted) { + m_isSwipeGesture = true; + } + + if (swipe->state() == Qt::GestureCanceled) { + m_isSwipeGesture = false; + } + + if (swipe->state() == Qt::GestureFinished) { + emit scrollerStop(); + + if (swipe->swipeAngle() <= 20 || swipe->swipeAngle() >= 340) { + emit mouseButtonPressed(m_pressedIndex, Qt::BackButton); + } else if (swipe->swipeAngle() <= 200 && swipe->swipeAngle() >= 160) { + emit mouseButtonPressed(m_pressedIndex, Qt::ForwardButton); + } else if (swipe->swipeAngle() <= 110 && swipe->swipeAngle() >= 60) { + emit swipeUp(); + } + m_isSwipeGesture = true; + } +} + +void KItemListController::twoFingerTapTriggered(QGestureEvent* event, const QTransform& transform) +{ + const KTwoFingerTap* twoTap = static_cast(event->gesture(m_twoFingerTapGesture)); + + if (!twoTap) { + return; + } + + if (twoTap->state() == Qt::GestureStarted) { + m_pressedMousePos = transform.map(twoTap->pos()); + m_pressedIndex = m_view->itemAt(m_pressedMousePos); + if (m_pressedIndex >= 0) { + onPress(twoTap->screenPos().toPoint(), twoTap->pos().toPoint(), Qt::ControlModifier, Qt::LeftButton); + onRelease(transform.map(twoTap->pos()), Qt::ControlModifier, Qt::LeftButton, false); + } + + } +} + +bool KItemListController::processEvent(QEvent* event, const QTransform& transform) +{ + if (!event) { + return false; + } + + switch (event->type()) { + case QEvent::KeyPress: + return keyPressEvent(static_cast(event)); + case QEvent::InputMethod: + return inputMethodEvent(static_cast(event)); + case QEvent::GraphicsSceneMousePress: + return mousePressEvent(static_cast(event), QTransform()); + case QEvent::GraphicsSceneMouseMove: + return mouseMoveEvent(static_cast(event), QTransform()); + case QEvent::GraphicsSceneMouseRelease: + return mouseReleaseEvent(static_cast(event), QTransform()); + case QEvent::GraphicsSceneMouseDoubleClick: + return mouseDoubleClickEvent(static_cast(event), QTransform()); + case QEvent::GraphicsSceneWheel: return wheelEvent(static_cast(event), QTransform()); case QEvent::GraphicsSceneDragEnter: return dragEnterEvent(static_cast(event), QTransform()); @@ -388,6 +1124,8 @@ bool KItemListController::processEvent(QEvent* event, const QTransform& transfor return hoverLeaveEvent(static_cast(event), QTransform()); case QEvent::GraphicsSceneResize: return resizeEvent(static_cast(event), transform); + case QEvent::Gesture: + return gestureEvent(static_cast(event), transform); default: break; } @@ -395,4 +1133,492 @@ bool KItemListController::processEvent(QEvent* event, const QTransform& transfor return false; } -#include "kitemlistcontroller.moc" +void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous) +{ + if (!m_view) { + return; + } + + KItemListRubberBand* rubberBand = m_view->rubberBand(); + if (rubberBand->isActive()) { + const qreal diff = current - previous; + // TODO: Ideally just QCursor::pos() should be used as + // new end-position but it seems there is no easy way + // to have something like QWidget::mapFromGlobal() for QGraphicsWidget + // (... or I just missed an easy way to do the mapping) + QPointF endPos = rubberBand->endPosition(); + if (m_view->scrollOrientation() == Qt::Vertical) { + endPos.ry() += diff; + } else { + endPos.rx() += diff; + } + + rubberBand->setEndPosition(endPos); + } +} + +void KItemListController::slotRubberBandChanged() +{ + if (!m_view || !m_model || m_model->count() <= 0) { + return; + } + + const KItemListRubberBand* rubberBand = m_view->rubberBand(); + const QPointF startPos = rubberBand->startPosition(); + const QPointF endPos = rubberBand->endPosition(); + QRectF rubberBandRect = QRectF(startPos, endPos).normalized(); + + const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical); + if (scrollVertical) { + rubberBandRect.translate(0, -m_view->scrollOffset()); + } else { + rubberBandRect.translate(-m_view->scrollOffset(), 0); + } + + if (!m_oldSelection.isEmpty()) { + // Clear the old selection that was available before the rubberband has + // been activated in case if no Shift- or Control-key are pressed + const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier || + QApplication::keyboardModifiers() & Qt::ControlModifier; + if (!shiftOrControlPressed) { + m_oldSelection.clear(); + } + } + + KItemSet selectedItems; + + // Select all visible items that intersect with the rubberband + foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) { + const int index = widget->index(); + + const QRectF widgetRect = m_view->itemRect(index); + if (widgetRect.intersects(rubberBandRect)) { + const QRectF iconRect = widget->iconRect().translated(widgetRect.topLeft()); + const QRectF textRect = widget->textRect().translated(widgetRect.topLeft()); + if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) { + selectedItems.insert(index); + } + } + } + + // Select all invisible items that intersect with the rubberband. Instead of + // iterating all items only the area which might be touched by the rubberband + // will be checked. + const bool increaseIndex = scrollVertical ? + startPos.y() > endPos.y(): startPos.x() > endPos.x(); + + int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1; + bool selectionFinished = false; + do { + const QRectF widgetRect = m_view->itemRect(index); + if (widgetRect.intersects(rubberBandRect)) { + selectedItems.insert(index); + } + + if (increaseIndex) { + ++index; + selectionFinished = (index >= m_model->count()) || + ( scrollVertical && widgetRect.top() > rubberBandRect.bottom()) || + (!scrollVertical && widgetRect.left() > rubberBandRect.right()); + } else { + --index; + selectionFinished = (index < 0) || + ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) || + (!scrollVertical && widgetRect.right() < rubberBandRect.left()); + } + } while (!selectionFinished); + + if (QApplication::keyboardModifiers() & Qt::ControlModifier) { + // If Control is pressed, the selection state of all items in the rubberband is toggled. + // Therefore, the new selection contains: + // 1. All previously selected items which are not inside the rubberband, and + // 2. all items inside the rubberband which have not been selected previously. + m_selectionManager->setSelectedItems(m_oldSelection ^ selectedItems); + } + else { + m_selectionManager->setSelectedItems(selectedItems + m_oldSelection); + } +} + +void KItemListController::startDragging() +{ + if (!m_view || !m_model) { + return; + } + + const KItemSet selectedItems = m_selectionManager->selectedItems(); + if (selectedItems.isEmpty()) { + return; + } + + QMimeData* data = m_model->createMimeData(selectedItems); + if (!data) { + return; + } + + // The created drag object will be owned and deleted + // by QApplication::activeWindow(). + QDrag* drag = new QDrag(QApplication::activeWindow()); + drag->setMimeData(data); + + const QPixmap pixmap = m_view->createDragPixmap(selectedItems); + drag->setPixmap(pixmap); + + const QPoint hotSpot((pixmap.width() / pixmap.devicePixelRatio()) / 2, 0); + drag->setHotSpot(hotSpot); + + drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::CopyAction); + + QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropStart); + QAccessible::updateAccessibility(&accessibilityEvent); +} + +KItemListWidget* KItemListController::hoveredWidget() const +{ + Q_ASSERT(m_view); + + foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { + if (widget->isHovered()) { + return widget; + } + } + + return nullptr; +} + +KItemListWidget* KItemListController::widgetForPos(const QPointF& pos) const +{ + Q_ASSERT(m_view); + + foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) { + const QPointF mappedPos = widget->mapFromItem(m_view, pos); + + const bool hovered = widget->contains(mappedPos) && + !widget->expansionToggleRect().contains(mappedPos); + if (hovered) { + return widget; + } + } + + return nullptr; +} + +void KItemListController::updateKeyboardAnchor() +{ + const bool validAnchor = m_keyboardAnchorIndex >= 0 && + m_keyboardAnchorIndex < m_model->count() && + keyboardAnchorPos(m_keyboardAnchorIndex) == m_keyboardAnchorPos; + if (!validAnchor) { + const int index = m_selectionManager->currentItem(); + m_keyboardAnchorIndex = index; + m_keyboardAnchorPos = keyboardAnchorPos(index); + } +} + +int KItemListController::nextRowIndex(int index) const +{ + if (m_keyboardAnchorIndex < 0) { + return index; + } + + const int maxIndex = m_model->count() - 1; + if (index == maxIndex) { + return index; + } + + // Calculate the index of the last column inside the row of the current index + int lastColumnIndex = index; + while (keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex)) { + ++lastColumnIndex; + if (lastColumnIndex >= maxIndex) { + return index; + } + } + + // Based on the last column index go to the next row and calculate the nearest index + // that is below the current index + int nextRowIndex = lastColumnIndex + 1; + int searchIndex = nextRowIndex; + qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(nextRowIndex)); + while (searchIndex < maxIndex && keyboardAnchorPos(searchIndex + 1) > keyboardAnchorPos(searchIndex)) { + ++searchIndex; + const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex)); + if (searchDiff < minDiff) { + minDiff = searchDiff; + nextRowIndex = searchIndex; + } + } + + return nextRowIndex; +} + +int KItemListController::previousRowIndex(int index) const +{ + if (m_keyboardAnchorIndex < 0 || index == 0) { + return index; + } + + // Calculate the index of the first column inside the row of the current index + int firstColumnIndex = index; + while (keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex)) { + --firstColumnIndex; + if (firstColumnIndex <= 0) { + return index; + } + } + + // Based on the first column index go to the previous row and calculate the nearest index + // that is above the current index + int previousRowIndex = firstColumnIndex - 1; + int searchIndex = previousRowIndex; + qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(previousRowIndex)); + while (searchIndex > 0 && keyboardAnchorPos(searchIndex - 1) < keyboardAnchorPos(searchIndex)) { + --searchIndex; + const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex)); + if (searchDiff < minDiff) { + minDiff = searchDiff; + previousRowIndex = searchIndex; + } + } + + return previousRowIndex; +} + +qreal KItemListController::keyboardAnchorPos(int index) const +{ + const QRectF itemRect = m_view->itemRect(index); + if (!itemRect.isEmpty()) { + return (m_view->scrollOrientation() == Qt::Vertical) ? itemRect.x() : itemRect.y(); + } + + return 0; +} + +void KItemListController::updateExtendedSelectionRegion() +{ + if (m_view) { + const bool extend = (m_selectionBehavior != MultiSelection); + KItemListStyleOption option = m_view->styleOption(); + if (option.extendedSelectionRegion != extend) { + option.extendedSelectionRegion = extend; + m_view->setStyleOption(option); + } + } +} + +bool KItemListController::onPress(const QPoint& screenPos, const QPointF& pos, const Qt::KeyboardModifiers modifiers, const Qt::MouseButtons buttons) +{ + emit mouseButtonPressed(m_pressedIndex, buttons); + + if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) { + m_selectionManager->endAnchoredSelection(); + m_selectionManager->setCurrentItem(m_pressedIndex); + m_selectionManager->beginAnchoredSelection(m_pressedIndex); + return true; + } + + m_selectionTogglePressed = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos); + if (m_selectionTogglePressed) { + m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle); + // The previous anchored selection has been finished already in + // KItemListSelectionManager::setSelected(). We can safely change + // the current item and start a new anchored selection now. + m_selectionManager->setCurrentItem(m_pressedIndex); + m_selectionManager->beginAnchoredSelection(m_pressedIndex); + return true; + } + + const bool shiftPressed = modifiers & Qt::ShiftModifier; + const bool controlPressed = modifiers & Qt::ControlModifier; + + // The previous selection is cleared if either + // 1. The selection mode is SingleSelection, or + // 2. the selection mode is MultiSelection, and *none* of the following conditions are met: + // a) Shift or Control are pressed. + // b) The clicked item is selected already. In that case, the user might want to: + // - start dragging multiple items, or + // - open the context menu and perform an action for all selected items. + const bool shiftOrControlPressed = shiftPressed || controlPressed; + const bool pressedItemAlreadySelected = m_pressedIndex >= 0 && m_selectionManager->isSelected(m_pressedIndex); + const bool clearSelection = m_selectionBehavior == SingleSelection || + (!shiftOrControlPressed && !pressedItemAlreadySelected); + if (clearSelection) { + m_selectionManager->clearSelection(); + } else if (pressedItemAlreadySelected && !shiftOrControlPressed && (buttons & Qt::LeftButton)) { + // The user might want to start dragging multiple items, but if he clicks the item + // in order to trigger it instead, the other selected items must be deselected. + // However, we do not know yet what the user is going to do. + // -> remember that the user pressed an item which had been selected already and + // clear the selection in mouseReleaseEvent(), unless the items are dragged. + m_clearSelectionIfItemsAreNotDragged = true; + + if (m_selectionManager->selectedItems().count() == 1 && m_view->isAboveText(m_pressedIndex, m_pressedMousePos)) { + emit selectedItemTextPressed(m_pressedIndex); + } + } + + if (!shiftPressed) { + // Finish the anchored selection before the current index is changed + m_selectionManager->endAnchoredSelection(); + } + + if (buttons & Qt::RightButton) { + // Stop rubber band from persisting after right-clicks + KItemListRubberBand* rubberBand = m_view->rubberBand(); + if (rubberBand->isActive()) { + disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged); + rubberBand->setActive(false); + m_view->setAutoScroll(false); + } + } + + if (m_pressedIndex >= 0) { + m_selectionManager->setCurrentItem(m_pressedIndex); + + switch (m_selectionBehavior) { + case NoSelection: + break; + + case SingleSelection: + m_selectionManager->setSelected(m_pressedIndex); + break; + + case MultiSelection: + if (controlPressed && !shiftPressed) { + m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle); + m_selectionManager->beginAnchoredSelection(m_pressedIndex); + } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) { + // Select the pressed item and start a new anchored selection + m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select); + m_selectionManager->beginAnchoredSelection(m_pressedIndex); + } + break; + + default: + Q_ASSERT(false); + break; + } + + if (buttons & Qt::RightButton) { + emit itemContextMenuRequested(m_pressedIndex, screenPos); + } + + return true; + } + + if (buttons & Qt::RightButton) { + const QRectF headerBounds = m_view->headerBoundaries(); + if (headerBounds.contains(pos)) { + emit headerContextMenuRequested(screenPos); + } else { + emit viewContextMenuRequested(screenPos); + } + return true; + } + + return false; +} + +bool KItemListController::onRelease(const QPointF& pos, const Qt::KeyboardModifiers modifiers, const Qt::MouseButtons buttons, bool touch) +{ + const bool isAboveSelectionToggle = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos); + if (isAboveSelectionToggle) { + m_selectionTogglePressed = false; + return true; + } + + if (!isAboveSelectionToggle && m_selectionTogglePressed) { + m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle); + m_selectionTogglePressed = false; + return true; + } + + const bool shiftOrControlPressed = modifiers & Qt::ShiftModifier || + modifiers & Qt::ControlModifier; + + KItemListRubberBand* rubberBand = m_view->rubberBand(); + if (rubberBand->isActive()) { + disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged); + rubberBand->setActive(false); + m_oldSelection.clear(); + m_view->setAutoScroll(false); + } + + const int index = m_view->itemAt(pos); + + if (index >= 0 && index == m_pressedIndex) { + // The release event is done above the same item as the press event + + if (m_clearSelectionIfItemsAreNotDragged) { + // A selected item has been clicked, but no drag operation has been started + // -> clear the rest of the selection. + m_selectionManager->clearSelection(); + m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select); + m_selectionManager->beginAnchoredSelection(m_pressedIndex); + } + + if (buttons & Qt::LeftButton) { + bool emitItemActivated = true; + if (m_view->isAboveExpansionToggle(index, pos)) { + const bool expanded = m_model->isExpanded(index); + m_model->setExpanded(index, !expanded); + + emit itemExpansionToggleClicked(index); + emitItemActivated = false; + } else if (shiftOrControlPressed) { + // The mouse click should only update the selection, not trigger the item + emitItemActivated = false; + } else if (!(m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced)) { + if (touch) { + emitItemActivated = true; + } else { + emitItemActivated = false; + } + } + if (emitItemActivated) { + emit itemActivated(index); + } + } else if (buttons & Qt::MiddleButton) { + emit itemMiddleClicked(index); + } + } + + m_pressedMousePos = QPointF(); + m_pressedIndex = -1; + m_clearSelectionIfItemsAreNotDragged = false; + return false; +} + +void KItemListController::startRubberBand() +{ + if (m_selectionBehavior == MultiSelection) { + QPointF startPos = m_pressedMousePos; + if (m_view->scrollOrientation() == Qt::Vertical) { + startPos.ry() += m_view->scrollOffset(); + if (m_view->itemSize().width() < 0) { + // Use a special rubberband for views that have only one column and + // expand the rubberband to use the whole width of the view. + startPos.setX(0); + } + } else { + startPos.rx() += m_view->scrollOffset(); + } + + m_oldSelection = m_selectionManager->selectedItems(); + KItemListRubberBand* rubberBand = m_view->rubberBand(); + rubberBand->setStartPosition(startPos); + rubberBand->setEndPosition(startPos); + rubberBand->setActive(true); + connect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged); + m_view->setAutoScroll(true); + } +} + +void KItemListController::slotStateChanged(QScroller::State newState) +{ + if (newState == QScroller::Scrolling) { + m_scrollerIsScrolling = true; + } else if (newState == QScroller::Inactive) { + m_scrollerIsScrolling = false; + } +}