-/***************************************************************************
- * Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com> *
- * *
- * 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 <peter.penz19@gmail.com>
+ *
+ * Based on the Itemviews NG project from Trolltech Labs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
#include "kitemlistcontainer.h"
#include "kitemlistcontroller.h"
#include "kitemlistview.h"
-#include "kitemmodelbase.h"
+#include "private/kitemlistsmoothscroller.h"
+#ifndef QT_NO_ACCESSIBILITY
+#include "accessibility/kitemlistviewaccessible.h"
+#endif
#include <QApplication>
+#include <QFontMetrics>
#include <QGraphicsScene>
#include <QGraphicsView>
-#include <QPropertyAnimation>
#include <QScrollBar>
-#include <QStyle>
-
-#include <KDebug>
-
+#include <QScroller>
+#include <QStyleOption>
+
+/**
+ * Replaces the default viewport of KItemListContainer by a
+ * non-scrollable viewport. The scrolling is done in an optimized
+ * way by KItemListView internally.
+ */
class KItemListContainerViewport : public QGraphicsView
{
+ Q_OBJECT
+
public:
- KItemListContainerViewport(QGraphicsScene* scene, QWidget* parent)
- : QGraphicsView(scene, parent)
- {
- setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
- setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
- setViewportMargins(0, 0, 0, 0);
- setFrameShape(QFrame::NoFrame);
- }
+ KItemListContainerViewport(QGraphicsScene *scene, QWidget *parent);
- void scrollContentsBy(int dx, int dy)
- {
- Q_UNUSED(dx);
- Q_UNUSED(dy);
- // Do nothing. This prevents that e.g. the wheel-event
- // results in a moving of the scene items.
- }
+protected:
+ void wheelEvent(QWheelEvent *event) override;
};
-KItemListContainer::KItemListContainer(KItemListController* controller, QWidget* parent) :
- QAbstractScrollArea(parent),
- m_controller(controller),
- m_scrollBarPressed(false),
- m_smoothScrolling(false),
- m_smoothScrollingAnimation(0)
+KItemListContainerViewport::KItemListContainerViewport(QGraphicsScene *scene, QWidget *parent)
+ : QGraphicsView(scene, parent)
{
- Q_ASSERT(controller);
- controller->setParent(this);
- initialize();
+ setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ setViewportMargins(0, 0, 0, 0);
+ setFrameShape(QFrame::NoFrame);
+}
+
+void KItemListContainerViewport::wheelEvent(QWheelEvent *event)
+{
+ // Assure that the wheel-event gets forwarded to the parent
+ // and not handled at all by QGraphicsView.
+ event->ignore();
}
-KItemListContainer::KItemListContainer(QWidget* parent) :
- QAbstractScrollArea(parent),
- m_controller(0),
- m_scrollBarPressed(false),
- m_smoothScrolling(false),
- m_smoothScrollingAnimation(0)
+KItemListContainer::KItemListContainer(KItemListController *controller, QWidget *parent)
+ : QAbstractScrollArea(parent)
+ , m_controller(controller)
+ , m_horizontalSmoothScroller(nullptr)
+ , m_verticalSmoothScroller(nullptr)
+ , m_scroller(nullptr)
{
- initialize();
+ Q_ASSERT(controller);
+ controller->setParent(this);
+
+ QGraphicsView *graphicsView = new KItemListContainerViewport(new QGraphicsScene(this), this);
+ setViewport(graphicsView);
+
+ m_horizontalSmoothScroller = new KItemListSmoothScroller(horizontalScrollBar(), this);
+ m_verticalSmoothScroller = new KItemListSmoothScroller(verticalScrollBar(), this);
+
+ if (controller->model()) {
+ slotModelChanged(controller->model(), nullptr);
+ }
+ if (controller->view()) {
+ slotViewChanged(controller->view(), nullptr);
+ }
+
+ connect(controller, &KItemListController::modelChanged, this, &KItemListContainer::slotModelChanged);
+ connect(controller, &KItemListController::viewChanged, this, &KItemListContainer::slotViewChanged);
+
+ m_scroller = QScroller::scroller(viewport());
+ m_scroller->grabGesture(viewport());
+ connect(controller, &KItemListController::scrollerStop, this, &KItemListContainer::stopScroller);
+ connect(m_scroller, &QScroller::stateChanged, controller, &KItemListController::slotStateChanged);
}
KItemListContainer::~KItemListContainer()
{
+ // Don't rely on the QObject-order to delete the controller, otherwise
+ // the QGraphicsScene might get deleted before the view.
+ delete m_controller;
+ m_controller = nullptr;
}
-KItemListController* KItemListContainer::controller() const
+KItemListController *KItemListContainer::controller() const
{
return m_controller;
}
-void KItemListContainer::keyPressEvent(QKeyEvent* event)
+void KItemListContainer::setEnabledFrame(bool enable)
+{
+ QGraphicsView *graphicsView = qobject_cast<QGraphicsView *>(viewport());
+ if (enable) {
+ setFrameShape(QFrame::StyledPanel);
+ graphicsView->setPalette(palette());
+ graphicsView->viewport()->setAutoFillBackground(true);
+ } else {
+ setFrameShape(QFrame::NoFrame);
+ // Make the background of the container transparent and apply the window-text color
+ // to the text color, so that enough contrast is given for all color
+ // schemes
+ QPalette p = graphicsView->palette();
+ p.setColor(QPalette::Active, QPalette::Text, p.color(QPalette::Active, QPalette::WindowText));
+ p.setColor(QPalette::Inactive, QPalette::Text, p.color(QPalette::Inactive, QPalette::WindowText));
+ p.setColor(QPalette::Disabled, QPalette::Text, p.color(QPalette::Disabled, QPalette::WindowText));
+ graphicsView->setPalette(p);
+ graphicsView->viewport()->setAutoFillBackground(false);
+ }
+}
+
+bool KItemListContainer::enabledFrame() const
+{
+ const QGraphicsView *graphicsView = qobject_cast<QGraphicsView *>(viewport());
+ return graphicsView->autoFillBackground();
+}
+
+void KItemListContainer::keyPressEvent(QKeyEvent *event)
{
// TODO: We should find a better way to handle the key press events in the view.
// The reasons why we need this hack are:
// 2. By default, the KItemListView does not have the keyboard focus in the QGraphicsScene, so
// simply sending the event to the QGraphicsView which is the KItemListContainer's viewport
// does not work.
- KItemListView* view = m_controller->view();
+ KItemListView *view = m_controller->view();
+ if (view) {
+ QApplication::sendEvent(view, event);
+ }
+}
+
+void KItemListContainer::contextMenuEvent(QContextMenuEvent *event)
+{
+ // Note copied from the keyPressEvent() method above because the same reasons probably also apply here.
+ // TODO: We should find a better way to handle the context menu events in the view.
+ // The reasons why we need this hack are:
+ // 1. Without reimplementing contextMenuEvent() here, the event would not reach the QGraphicsView.
+ // 2. By default, the KItemListView does not have the keyboard focus in the QGraphicsScene, so
+ // simply sending the event to the QGraphicsView which is the KItemListContainer's viewport
+ // does not work.
+ KItemListView *view = m_controller->view();
if (view) {
QApplication::sendEvent(view, event);
}
}
-void KItemListContainer::showEvent(QShowEvent* event)
+void KItemListContainer::showEvent(QShowEvent *event)
{
QAbstractScrollArea::showEvent(event);
updateGeometries();
}
-void KItemListContainer::resizeEvent(QResizeEvent* event)
+void KItemListContainer::resizeEvent(QResizeEvent *event)
{
QAbstractScrollArea::resizeEvent(event);
updateGeometries();
void KItemListContainer::scrollContentsBy(int dx, int dy)
{
- KItemListView* view = m_controller->view();
- if (!view) {
+ m_horizontalSmoothScroller->scrollContentsBy(dx);
+ m_verticalSmoothScroller->scrollContentsBy(dy);
+}
+
+void KItemListContainer::wheelEvent(QWheelEvent *event)
+{
+ if (event->modifiers().testFlag(Qt::ControlModifier)) {
+ event->ignore();
return;
}
- const QScrollBar* scrollBar = (view->scrollOrientation() == Qt::Vertical)
- ? verticalScrollBar() : horizontalScrollBar();
- const qreal currentOffset = view->scrollOffset();
- if (static_cast<int>(currentOffset) == scrollBar->value()) {
- // The current offset is already synchronous to the scrollbar
+ KItemListView *view = m_controller->view();
+ if (!view) {
+ event->ignore();
return;
}
- qreal offsetDiff = (view->scrollOrientation() == Qt::Vertical) ? dy : dx;
-
- const bool animRunning = (m_smoothScrollingAnimation->state() == QAbstractAnimation::Running);
- if (animRunning) {
- // Stopping a running animation means skipping the range from the current offset
- // until the target offset. To prevent skipping of the range the difference
- // is added to the new target offset.
- const qreal oldEndOffset = m_smoothScrollingAnimation->endValue().toReal();
- offsetDiff += (currentOffset - oldEndOffset);
- }
+ const bool scrollHorizontally = (qAbs(event->angleDelta().y()) < qAbs(event->angleDelta().x())) || (!verticalScrollBar()->isVisible());
+ KItemListSmoothScroller *smoothScroller = scrollHorizontally ? m_horizontalSmoothScroller : m_verticalSmoothScroller;
- const qreal endOffset = currentOffset - offsetDiff;
+ smoothScroller->handleWheelEvent(event);
+}
- if (m_smoothScrolling || animRunning) {
- qreal startOffset = currentOffset;
- if (animRunning) {
- // If the animation was running and has been interrupted by assigning a new end-offset
- // one frame must be added to the start-offset to keep the animation smooth. This also
- // assures that animation proceeds even in cases where new end-offset are triggered
- // within a very short timeslots.
- startOffset += (endOffset - currentOffset) * 1000 / (m_smoothScrollingAnimation->duration() * 60);
- }
+void KItemListContainer::focusInEvent(QFocusEvent *event)
+{
+ KItemListView *view = m_controller->view();
+ if (view) {
+ QApplication::sendEvent(view, event);
- m_smoothScrollingAnimation->stop();
- m_smoothScrollingAnimation->setStartValue(startOffset);
- m_smoothScrollingAnimation->setEndValue(endOffset);
- m_smoothScrollingAnimation->setEasingCurve(animRunning ? QEasingCurve::OutQuad : QEasingCurve::InOutQuad);
- m_smoothScrollingAnimation->start();
- view->setScrollOffset(startOffset);
- } else {
- view->setScrollOffset(endOffset);
+ // We need to set the focus to the view or accessibility software will only announce the container (which has no information available itself).
+ // For some reason actively setting the focus to the view needs to be delayed or the focus will immediately go back to this container.
+ QTimer::singleShot(0, this, [this, view]() {
+ if (!isAncestorOf(QApplication::focusWidget())) {
+ view->setFocus();
+ }
+#ifndef QT_NO_ACCESSIBILITY
+ static_cast<KItemListViewAccessible *>(QAccessible::queryAccessibleInterface(view))->setAccessibleFocusAndAnnounceAll();
+#endif
+ });
}
}
-bool KItemListContainer::eventFilter(QObject* obj, QEvent* event)
+void KItemListContainer::focusOutEvent(QFocusEvent *event)
{
- Q_ASSERT(obj == horizontalScrollBar() || obj == verticalScrollBar());
-
- // Check whether the scrollbar has been adjusted by a mouse-event
- // triggered by the user and remember this in m_scrollBarPressed.
- // The smooth scrolling will only get active if m_scrollBarPressed
- // is true (see scrollContentsBy()).
- const bool scrollVertical = (m_controller->view()->scrollOrientation() == Qt::Vertical);
- const bool checkEvent = ( scrollVertical && obj == verticalScrollBar()) ||
- (!scrollVertical && obj == horizontalScrollBar());
- if (checkEvent) {
- switch (event->type()) {
- case QEvent::MouseButtonPress:
- m_scrollBarPressed = true;
- m_smoothScrolling = true;
- break;
-
- case QEvent::MouseButtonRelease:
- m_scrollBarPressed = false;
- m_smoothScrolling = false;
- break;
-
- case QEvent::Wheel:
- wheelEvent(static_cast<QWheelEvent*>(event));
- break;
-
- default:
- break;
- }
+ KItemListView *view = m_controller->view();
+ if (view) {
+ QApplication::sendEvent(view, event);
}
-
- return QAbstractScrollArea::eventFilter(obj, event);
}
-void KItemListContainer::wheelEvent(QWheelEvent* event)
+void KItemListContainer::slotScrollOrientationChanged(Qt::Orientation current, Qt::Orientation previous)
{
- if (event->modifiers().testFlag(Qt::ControlModifier)) {
- event->ignore();
- return;
- }
-
- KItemListView* view = m_controller->view();
-
- if (!view || event->orientation() != view->scrollOrientation()) {
- return;
- }
-
- const int numDegrees = event->delta() / 8;
- const int numSteps = numDegrees / 15;
-
- const bool previous = m_smoothScrolling;
- m_smoothScrolling = true;
- if (view->scrollOrientation() == Qt::Vertical) {
- const int value = verticalScrollBar()->value();
- verticalScrollBar()->setValue(value - numSteps * view->size().height());
- } else {
- const int value = horizontalScrollBar()->value();
- horizontalScrollBar()->setValue(value - numSteps * view->size().width());
- }
- m_smoothScrolling = previous;
-
- event->accept();
+ Q_UNUSED(previous)
+ updateSmoothScrollers(current);
}
-void KItemListContainer::slotModelChanged(KItemModelBase* current, KItemModelBase* previous)
+void KItemListContainer::slotModelChanged(KItemModelBase *current, KItemModelBase *previous)
{
- Q_UNUSED(current);
- Q_UNUSED(previous);
+ Q_UNUSED(current)
+ Q_UNUSED(previous)
}
-void KItemListContainer::slotViewChanged(KItemListView* current, KItemListView* previous)
+void KItemListContainer::slotViewChanged(KItemListView *current, KItemListView *previous)
{
- QGraphicsScene* scene = static_cast<QGraphicsView*>(viewport())->scene();
+ QGraphicsScene *scene = static_cast<QGraphicsView *>(viewport())->scene();
if (previous) {
scene->removeItem(previous);
- disconnect(previous, SIGNAL(scrollOffsetChanged(qreal,qreal)), this, SLOT(updateScrollOffsetScrollBar()));
- disconnect(previous, SIGNAL(maximumScrollOffsetChanged(qreal,qreal)), this, SLOT(updateScrollOffsetScrollBar()));
- disconnect(previous, SIGNAL(itemOffsetChanged(qreal,qreal)), this, SLOT(updateItemOffsetScrollBar()));
- disconnect(previous, SIGNAL(maximumItemOffsetChanged(qreal,qreal)), this, SLOT(updateItemOffsetScrollBar()));
- disconnect(previous, SIGNAL(scrollTo(qreal)), this, SLOT(scrollTo(qreal)));
- m_smoothScrollingAnimation->setTargetObject(0);
+ disconnect(previous, &KItemListView::scrollOrientationChanged, this, &KItemListContainer::slotScrollOrientationChanged);
+ disconnect(previous, &KItemListView::scrollOffsetChanged, this, &KItemListContainer::updateScrollOffsetScrollBar);
+ disconnect(previous, &KItemListView::maximumScrollOffsetChanged, this, &KItemListContainer::updateScrollOffsetScrollBar);
+ disconnect(previous, &KItemListView::itemOffsetChanged, this, &KItemListContainer::updateItemOffsetScrollBar);
+ disconnect(previous, &KItemListView::maximumItemOffsetChanged, this, &KItemListContainer::updateItemOffsetScrollBar);
+ disconnect(previous, &KItemListView::scrollTo, this, &KItemListContainer::scrollTo);
+ disconnect(m_horizontalSmoothScroller, &KItemListSmoothScroller::scrollingStopped, previous, &KItemListView::scrollingStopped);
+ disconnect(m_verticalSmoothScroller, &KItemListSmoothScroller::scrollingStopped, previous, &KItemListView::scrollingStopped);
+ m_horizontalSmoothScroller->setTargetObject(nullptr);
+ m_verticalSmoothScroller->setTargetObject(nullptr);
}
if (current) {
scene->addItem(current);
- connect(current, SIGNAL(scrollOffsetChanged(qreal,qreal)), this, SLOT(updateScrollOffsetScrollBar()));
- connect(current, SIGNAL(maximumScrollOffsetChanged(qreal,qreal)), this, SLOT(updateScrollOffsetScrollBar()));
- connect(current, SIGNAL(itemOffsetChanged(qreal,qreal)), this, SLOT(updateItemOffsetScrollBar()));
- connect(current, SIGNAL(maximumItemOffsetChanged(qreal,qreal)), this, SLOT(updateItemOffsetScrollBar()));
- connect(current, SIGNAL(scrollTo(qreal)), this, SLOT(scrollTo(qreal)));
- m_smoothScrollingAnimation->setTargetObject(current);
- }
-}
-
-void KItemListContainer::slotAnimationStateChanged(QAbstractAnimation::State newState,
- QAbstractAnimation::State oldState)
-{
- Q_UNUSED(oldState);
- if (newState == QAbstractAnimation::Stopped && m_smoothScrolling && !m_scrollBarPressed) {
- m_smoothScrolling = false;
+ connect(current, &KItemListView::scrollOrientationChanged, this, &KItemListContainer::slotScrollOrientationChanged);
+ connect(current, &KItemListView::scrollOffsetChanged, this, &KItemListContainer::updateScrollOffsetScrollBar);
+ connect(current, &KItemListView::maximumScrollOffsetChanged, this, &KItemListContainer::updateScrollOffsetScrollBar);
+ connect(current, &KItemListView::itemOffsetChanged, this, &KItemListContainer::updateItemOffsetScrollBar);
+ connect(current, &KItemListView::maximumItemOffsetChanged, this, &KItemListContainer::updateItemOffsetScrollBar);
+ connect(current, &KItemListView::scrollTo, this, &KItemListContainer::scrollTo);
+ connect(m_horizontalSmoothScroller, &KItemListSmoothScroller::scrollingStopped, current, &KItemListView::scrollingStopped);
+ connect(m_verticalSmoothScroller, &KItemListSmoothScroller::scrollingStopped, current, &KItemListView::scrollingStopped);
+
+ m_horizontalSmoothScroller->setTargetObject(current);
+ m_verticalSmoothScroller->setTargetObject(current);
+ updateSmoothScrollers(current->scrollOrientation());
}
}
-
void KItemListContainer::scrollTo(qreal offset)
{
- const KItemListView* view = m_controller->view();
- if (!view) {
- return;
+ const KItemListView *view = m_controller->view();
+ if (view) {
+ if (view->scrollOrientation() == Qt::Vertical) {
+ m_verticalSmoothScroller->scrollTo(offset);
+ } else {
+ m_horizontalSmoothScroller->scrollTo(offset);
+ }
}
-
- m_smoothScrolling = true;
- QScrollBar* scrollBar = (view->scrollOrientation() == Qt::Vertical)
- ? verticalScrollBar() : horizontalScrollBar();
- scrollBar->setValue(offset);
}
void KItemListContainer::updateScrollOffsetScrollBar()
{
- const KItemListView* view = m_controller->view();
+ const KItemListView *view = m_controller->view();
if (!view) {
return;
}
- QScrollBar* scrollOffsetScrollBar = 0;
- int singleStep = 0;
+ KItemListSmoothScroller *smoothScroller = nullptr;
+ QScrollBar *scrollOffsetScrollBar = nullptr;
int pageStep = 0;
+ int maximum = 0;
if (view->scrollOrientation() == Qt::Vertical) {
+ smoothScroller = m_verticalSmoothScroller;
+ if (smoothScroller->isAnimating()) {
+ return;
+ }
scrollOffsetScrollBar = verticalScrollBar();
- singleStep = view->itemSize().height();
- pageStep = view->size().height();
+
+ // We cannot use view->size().height() because this height might
+ // include the header widget, which is not part of the scrolled area.
+ pageStep = view->verticalPageStep();
+
+ // However, the total height of the view must be considered for the
+ // maximum value of the scroll bar. Note that the view's scrollOffset()
+ // refers to the offset of the top part of the view, which might be
+ // hidden behind the header.
+ maximum = qMax(0, int(view->maximumScrollOffset() - view->size().height()));
} else {
+ smoothScroller = m_horizontalSmoothScroller;
+ if (smoothScroller->isAnimating()) {
+ return;
+ }
scrollOffsetScrollBar = horizontalScrollBar();
- singleStep = view->itemSize().width();
pageStep = view->size().width();
+ maximum = qMax(0, int(view->maximumScrollOffset() - view->size().width()));
}
+ const int singleStep = view->scrollSingleStep();
const int value = view->scrollOffset();
- const int maximum = qMax(0, int(view->maximumScrollOffset() - pageStep));
- if (m_smoothScrollingAnimation->state() == QAbstractAnimation::Running) {
- if (maximum == scrollOffsetScrollBar->maximum()) {
- // The value has been changed by the animation, no update
- // of the scrollbars is required as their target state will be
- // reached with the end of the animation.
- return;
+ if (smoothScroller->requestScrollBarUpdate(maximum)) {
+ const bool updatePolicy = (scrollOffsetScrollBar->maximum() > 0 && maximum == 0) || horizontalScrollBarPolicy() == Qt::ScrollBarAlwaysOn;
+
+ scrollOffsetScrollBar->setSingleStep(singleStep);
+ scrollOffsetScrollBar->setPageStep(pageStep);
+ scrollOffsetScrollBar->setMinimum(0);
+ scrollOffsetScrollBar->setMaximum(maximum);
+ scrollOffsetScrollBar->setValue(value);
+
+ if (updatePolicy) {
+ // Prevent a potential endless layout loop (see bug #293318).
+ updateScrollOffsetScrollBarPolicy();
}
-
- // The maximum has been changed which indicates that the content
- // of the view has been changed. Stop the animation in any case and
- // update the scrollbars immediately.
- m_smoothScrollingAnimation->stop();
}
-
- scrollOffsetScrollBar->setSingleStep(singleStep);
- scrollOffsetScrollBar->setPageStep(pageStep);
- scrollOffsetScrollBar->setMinimum(0);
- scrollOffsetScrollBar->setMaximum(maximum);
- scrollOffsetScrollBar->setValue(value);
}
void KItemListContainer::updateItemOffsetScrollBar()
{
- const KItemListView* view = m_controller->view();
+ const KItemListView *view = m_controller->view();
if (!view) {
return;
}
- QScrollBar* itemOffsetScrollBar = 0;
+ KItemListSmoothScroller *smoothScroller = nullptr;
+ QScrollBar *itemOffsetScrollBar = nullptr;
int singleStep = 0;
int pageStep = 0;
if (view->scrollOrientation() == Qt::Vertical) {
+ smoothScroller = m_horizontalSmoothScroller;
+ if (smoothScroller->isAnimating()) {
+ return;
+ }
itemOffsetScrollBar = horizontalScrollBar();
- singleStep = view->itemSize().width() / 10;
+ singleStep = view->size().width() / 10;
pageStep = view->size().width();
} else {
+ smoothScroller = m_verticalSmoothScroller;
+ if (smoothScroller->isAnimating()) {
+ return;
+ }
itemOffsetScrollBar = verticalScrollBar();
- singleStep = view->itemSize().height() / 10;
+ singleStep = view->size().height() / 10;
pageStep = view->size().height();
}
const int value = view->itemOffset();
const int maximum = qMax(0, int(view->maximumItemOffset()) - pageStep);
+ if (smoothScroller->requestScrollBarUpdate(maximum)) {
+ itemOffsetScrollBar->setSingleStep(singleStep);
+ itemOffsetScrollBar->setPageStep(pageStep);
+ itemOffsetScrollBar->setMinimum(0);
+ itemOffsetScrollBar->setMaximum(maximum);
+ itemOffsetScrollBar->setValue(value);
+ }
+}
- itemOffsetScrollBar->setSingleStep(singleStep);
- itemOffsetScrollBar->setPageStep(pageStep);
- itemOffsetScrollBar->setMinimum(0);
- itemOffsetScrollBar->setMaximum(maximum);
- itemOffsetScrollBar->setValue(value);
+void KItemListContainer::stopScroller()
+{
+ m_scroller->stop();
}
void KItemListContainer::updateGeometries()
{
QRect rect = geometry();
- const int widthDec = verticalScrollBar()->isVisible()
- ? frameWidth() + style()->pixelMetric(QStyle::PM_ScrollBarExtent)
- : frameWidth() * 2;
+ int extra = frameWidth() * 2;
+ QStyleOption option;
+ option.initFrom(this);
+ int scrollbarSpacing = 0;
+ if (style()->styleHint(QStyle::SH_ScrollView_FrameOnlyAroundContents, &option, this)) {
+ scrollbarSpacing = style()->pixelMetric(QStyle::PM_ScrollView_ScrollBarSpacing, &option, this);
+ }
- const int heightDec = horizontalScrollBar()->isVisible()
- ? frameWidth() + style()->pixelMetric(QStyle::PM_ScrollBarExtent)
- : frameWidth() * 2;
+ const int widthDec = verticalScrollBar()->isVisible() ? extra + scrollbarSpacing + style()->pixelMetric(QStyle::PM_ScrollBarExtent, &option, this) : extra;
- rect.adjust(0, 0, -widthDec, -heightDec);
+ const int heightDec =
+ horizontalScrollBar()->isVisible() ? extra + scrollbarSpacing + style()->pixelMetric(QStyle::PM_ScrollBarExtent, &option, this) : extra;
- const QRectF newGeometry(0, 0, rect.width(), rect.height());
+ const QRectF newGeometry(0, 0, rect.width() - widthDec, rect.height() - heightDec);
if (m_controller->view()->geometry() != newGeometry) {
m_controller->view()->setGeometry(newGeometry);
- static_cast<KItemListContainerViewport*>(viewport())->scene()->setSceneRect(0, 0, rect.width(), rect.height());
- static_cast<KItemListContainerViewport*>(viewport())->viewport()->setGeometry(QRect(0, 0, rect.width(), rect.height()));
+ // Get the real geometry of the view again since the scrollbars
+ // visibilities and the view geometry may have changed in re-layout.
+ static_cast<KItemListContainerViewport *>(viewport())->scene()->setSceneRect(m_controller->view()->geometry());
+ static_cast<KItemListContainerViewport *>(viewport())->viewport()->setGeometry(m_controller->view()->geometry().toRect());
updateScrollOffsetScrollBar();
updateItemOffsetScrollBar();
}
}
-void KItemListContainer::initialize()
+void KItemListContainer::updateSmoothScrollers(Qt::Orientation orientation)
{
- if (!m_controller) {
- m_controller = new KItemListController(this);
+ if (orientation == Qt::Vertical) {
+ m_verticalSmoothScroller->setPropertyName("scrollOffset");
+ m_horizontalSmoothScroller->setPropertyName("itemOffset");
+ } else {
+ m_horizontalSmoothScroller->setPropertyName("scrollOffset");
+ m_verticalSmoothScroller->setPropertyName("itemOffset");
}
- connect(m_controller, SIGNAL(modelChanged(KItemModelBase*,KItemModelBase*)),
- this, SLOT(slotModelChanged(KItemModelBase*,KItemModelBase*)));
- connect(m_controller, SIGNAL(viewChanged(KItemListView*,KItemListView*)),
- this, SLOT(slotViewChanged(KItemListView*,KItemListView*)));
+ const bool isRightToLeft = m_controller->view()->layoutDirection() == Qt::RightToLeft;
+ QScrollBar *hScrollBar = horizontalScrollBar();
+ hScrollBar->setInvertedAppearance(isRightToLeft && orientation == Qt::Vertical);
+ hScrollBar->setInvertedControls(!isRightToLeft || orientation == Qt::Vertical);
+}
+
+void KItemListContainer::updateScrollOffsetScrollBarPolicy()
+{
+ const KItemListView *view = m_controller->view();
+ Q_ASSERT(view);
+ const bool vertical = (view->scrollOrientation() == Qt::Vertical);
- QGraphicsView* graphicsView = new KItemListContainerViewport(new QGraphicsScene(this), this);
- setViewport(graphicsView);
+ QStyleOption option;
+ option.initFrom(this);
+ const int scrollBarInc = style()->pixelMetric(QStyle::PM_ScrollBarExtent, &option, this);
- m_smoothScrollingAnimation = new QPropertyAnimation(this, "scrollOffset");
- m_smoothScrollingAnimation->setDuration(300);
- connect(m_smoothScrollingAnimation, SIGNAL(stateChanged(QAbstractAnimation::State,QAbstractAnimation::State)),
- this, SLOT(slotAnimationStateChanged(QAbstractAnimation::State,QAbstractAnimation::State)));
+ QSizeF newViewSize = m_controller->view()->size();
+ if (vertical) {
+ newViewSize.rwidth() += scrollBarInc;
+ } else {
+ newViewSize.rheight() += scrollBarInc;
+ }
- horizontalScrollBar()->installEventFilter(this);
- verticalScrollBar()->installEventFilter(this);
+ const Qt::ScrollBarPolicy policy = view->scrollBarRequired(newViewSize) ? Qt::ScrollBarAlwaysOn : Qt::ScrollBarAsNeeded;
+ if (vertical) {
+ setVerticalScrollBarPolicy(policy);
+ } else {
+ setHorizontalScrollBarPolicy(policy);
+ }
}
#include "kitemlistcontainer.moc"
+#include "moc_kitemlistcontainer.cpp"
projects / dolphin.git / blobdiff