diff options
author | J-P Nurmi <jpnurmi@qt.io> | 2016-10-25 16:44:54 +0200 |
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committer | J-P Nurmi <jpnurmi@qt.io> | 2016-10-26 09:19:56 +0000 |
commit | 31674ff67823f416497039a2fc029ccde113f055 (patch) | |
tree | 6c5bac9356b6066913ed5af06bf785fddfa8e563 /src/quicktemplates2/qquickpopuppositioner.cpp | |
parent | eb9bde6d803b1b46ff3bd63fd1a6b40758cd7f4f (diff) |
Move QQuickPopupPositioner out of qquickpopup.*
qquickpopup.cpp has grown massive.
Change-Id: Ibbc83331b642d854d4f7dc2aebe8b3fc46ec7bee
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Diffstat (limited to 'src/quicktemplates2/qquickpopuppositioner.cpp')
-rw-r--r-- | src/quicktemplates2/qquickpopuppositioner.cpp | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/quicktemplates2/qquickpopuppositioner.cpp b/src/quicktemplates2/qquickpopuppositioner.cpp new file mode 100644 index 00000000..f9d12865 --- /dev/null +++ b/src/quicktemplates2/qquickpopuppositioner.cpp @@ -0,0 +1,148 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPLv3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or later as published by the Free +** Software Foundation and appearing in the file LICENSE.GPL included in +** the packaging of this file. Please review the following information to +** ensure the GNU General Public License version 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qquickpopuppositioner_p_p.h" +#include "qquickpopup_p_p.h" + +#include <QtQuick/private/qquickitem_p.h> + +QT_BEGIN_NAMESPACE + +static const QQuickItemPrivate::ChangeTypes AncestorChangeTypes = QQuickItemPrivate::Geometry + | QQuickItemPrivate::Parent + | QQuickItemPrivate::Children; + +static const QQuickItemPrivate::ChangeTypes ItemChangeTypes = QQuickItemPrivate::Geometry + | QQuickItemPrivate::Parent; + +QQuickPopupPositioner::QQuickPopupPositioner(QQuickPopupPrivate *popup) : + m_parentItem(nullptr), + m_popup(popup) +{ +} + +QQuickPopupPositioner::~QQuickPopupPositioner() +{ + if (m_parentItem) { + QQuickItemPrivate::get(m_parentItem)->removeItemChangeListener(this, ItemChangeTypes); + removeAncestorListeners(m_parentItem->parentItem()); + } +} + +QQuickItem *QQuickPopupPositioner::parentItem() const +{ + return m_parentItem; +} + +void QQuickPopupPositioner::setParentItem(QQuickItem *parent) +{ + if (m_parentItem == parent) + return; + + if (m_parentItem) { + QQuickItemPrivate::get(m_parentItem)->removeItemChangeListener(this, ItemChangeTypes); + removeAncestorListeners(m_parentItem->parentItem()); + } + + m_parentItem = parent; + + if (!parent) + return; + + QQuickItemPrivate::get(parent)->addItemChangeListener(this, ItemChangeTypes); + addAncestorListeners(parent->parentItem()); + + if (m_popup->popupItem->isVisible()) + m_popup->reposition(); +} + +void QQuickPopupPositioner::itemGeometryChanged(QQuickItem *, QQuickGeometryChange, const QRectF &) +{ + if (m_parentItem && m_popup->popupItem->isVisible()) + m_popup->reposition(); +} + +void QQuickPopupPositioner::itemParentChanged(QQuickItem *, QQuickItem *parent) +{ + addAncestorListeners(parent); +} + +void QQuickPopupPositioner::itemChildRemoved(QQuickItem *item, QQuickItem *child) +{ + if (isAncestor(child)) + removeAncestorListeners(item); +} + +void QQuickPopupPositioner::removeAncestorListeners(QQuickItem *item) +{ + if (item == m_parentItem) + return; + + QQuickItem *p = item; + while (p) { + QQuickItemPrivate::get(p)->removeItemChangeListener(this, AncestorChangeTypes); + p = p->parentItem(); + } +} + +void QQuickPopupPositioner::addAncestorListeners(QQuickItem *item) +{ + if (item == m_parentItem) + return; + + QQuickItem *p = item; + while (p) { + QQuickItemPrivate::get(p)->addItemChangeListener(this, AncestorChangeTypes); + p = p->parentItem(); + } +} + +// TODO: use QQuickItem::isAncestorOf() in dev/5.7 +bool QQuickPopupPositioner::isAncestor(QQuickItem *item) const +{ + if (!m_parentItem) + return false; + + QQuickItem *parent = m_parentItem; + while (parent) { + if (parent == item) + return true; + parent = parent->parentItem(); + } + return false; +} + +QT_END_NAMESPACE |