| /**************************************************************************** |
| ** |
| ** 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 |
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| ** GNU Lesser General Public License Usage |
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| ** General Public License version 3 as published by the Free Software |
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| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
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| ** |
| ** 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. |
| ** |
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| ****************************************************************************/ |
| |
| #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 geometryChanged() 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::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) |
| { |
| Q_D(QQuickIconImage); |
| QQuickImage::geometryChanged(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 |