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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Quick Controls 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 "qquickiconimage_p.h"
#include "qquickiconimage_p_p.h"
#include <QtCore/qmath.h>
#include <QtQuick/private/qquickimagebase_p_p.h>
QT_BEGIN_NAMESPACE
bool QQuickIconImagePrivate::updateDevicePixelRatio(qreal targetDevicePixelRatio)
{
if (isThemeIcon) {
devicePixelRatio = calculateDevicePixelRatio();
return true;
}
return QQuickImagePrivate::updateDevicePixelRatio(targetDevicePixelRatio);
}
void QQuickIconImagePrivate::updateIcon()
{
Q_Q(QQuickIconImage);
// Both geometryChange() and QQuickImageBase::sourceSizeChanged()
// (which we connect to updateIcon() in the constructor) can be called as a result
// of updateIcon() changing the various sizes, so we must check that we're not recursing.
if (updatingIcon)
return;
updatingIcon = true;
QSize size = sourcesize;
// If no size is specified for theme icons, it will use the smallest available size.
if (size.width() <= 0)
size.setWidth(q->width());
if (size.height() <= 0)
size.setHeight(q->height());
const qreal dpr = calculateDevicePixelRatio();
const QIconLoaderEngineEntry *entry = QIconLoaderEngine::entryForSize(icon, size * dpr, qCeil(dpr));
if (entry) {
QQmlContext *context = qmlContext(q);
const QUrl entryUrl = QUrl::fromLocalFile(entry->filename);
url = context ? context->resolvedUrl(entryUrl) : entryUrl;
isThemeIcon = true;
} else {
url = source;
isThemeIcon = false;
}
q->load();
updatingIcon = false;
}
void QQuickIconImagePrivate::updateFillMode()
{
Q_Q(QQuickIconImage);
// If we start with a sourceSize of 28x28 and then set sourceSize.width to 24, the fillMode
// will change to PreserveAspectFit (because pixmapSize.width() > width()), which causes the
// pixmap to be reloaded at its original size of 28x28, which causes the fillMode to change
// to Pad (because pixmapSize.width() <= width()), and so on.
if (updatingFillMode)
return;
updatingFillMode = true;
const QSize pixmapSize = QSize(pix.width(), pix.height()) / calculateDevicePixelRatio();
if (pixmapSize.width() > q->width() || pixmapSize.height() > q->height())
q->setFillMode(QQuickImage::PreserveAspectFit);
else
q->setFillMode(QQuickImage::Pad);
updatingFillMode = false;
}
qreal QQuickIconImagePrivate::calculateDevicePixelRatio() const
{
Q_Q(const QQuickIconImage);
return q->window() ? q->window()->effectiveDevicePixelRatio() : qApp->devicePixelRatio();
}
QQuickIconImage::QQuickIconImage(QQuickItem *parent)
: QQuickImage(*(new QQuickIconImagePrivate), parent)
{
setFillMode(Pad);
}
QString QQuickIconImage::name() const
{
Q_D(const QQuickIconImage);
return d->icon.iconName;
}
void QQuickIconImage::setName(const QString &name)
{
Q_D(QQuickIconImage);
if (d->icon.iconName == name)
return;
d->icon = QIconLoader::instance()->loadIcon(name);
if (isComponentComplete())
d->updateIcon();
emit nameChanged();
}
QColor QQuickIconImage::color() const
{
Q_D(const QQuickIconImage);
return d->color;
}
void QQuickIconImage::setColor(const QColor &color)
{
Q_D(QQuickIconImage);
if (d->color == color)
return;
d->color = color;
if (isComponentComplete())
d->updateIcon();
emit colorChanged();
}
void QQuickIconImage::setSource(const QUrl &source)
{
Q_D(QQuickIconImage);
if (d->source == source)
return;
d->source = source;
if (isComponentComplete())
d->updateIcon();
emit sourceChanged(source);
}
void QQuickIconImage::componentComplete()
{
Q_D(QQuickIconImage);
QQuickImage::componentComplete();
d->updateIcon();
QObjectPrivate::connect(this, &QQuickImageBase::sourceSizeChanged, d, &QQuickIconImagePrivate::updateIcon);
}
void QQuickIconImage::geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry)
{
Q_D(QQuickIconImage);
QQuickImage::geometryChange(newGeometry, oldGeometry);
if (isComponentComplete() && newGeometry.size() != oldGeometry.size())
d->updateIcon();
}
void QQuickIconImage::itemChange(ItemChange change, const ItemChangeData &value)
{
Q_D(QQuickIconImage);
if (change == ItemDevicePixelRatioHasChanged)
d->updateIcon();
QQuickImage::itemChange(change, value);
}
void QQuickIconImage::pixmapChange()
{
Q_D(QQuickIconImage);
QQuickImage::pixmapChange();
d->updateFillMode();
// Don't apply the color if we're recursing (updateFillMode() can cause us to recurse).
if (!d->updatingFillMode && d->color.alpha() > 0) {
QImage image = d->pix.image();
if (!image.isNull()) {
QPainter painter(&image);
painter.setCompositionMode(QPainter::CompositionMode_SourceIn);
painter.fillRect(image.rect(), d->color);
d->pix.setImage(image);
}
}
}
QT_END_NAMESPACE
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