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Diffstat (limited to 'src/quickcontrols2/qquickiconimage.cpp')
-rw-r--r-- | src/quickcontrols2/qquickiconimage.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/quickcontrols2/qquickiconimage.cpp b/src/quickcontrols2/qquickiconimage.cpp new file mode 100644 index 00000000..885bc7f9 --- /dev/null +++ b/src/quickcontrols2/qquickiconimage.cpp @@ -0,0 +1,220 @@ +/**************************************************************************** +** +** 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 + +QQuickIconImagePrivate::QQuickIconImagePrivate() + : color(Qt::transparent), + updatingIcon(false), + isThemeIcon(false), + updatingFillMode(false) +{ +} + +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(); + + if (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 |