Revision control
Copy as Markdown
// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#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()
{
icon.entries.clear();
}
bool QQuickIconImagePrivate::updateDevicePixelRatio(qreal targetDevicePixelRatio, bool scalable)
{
if (isThemeIcon) {
devicePixelRatio = effectiveDevicePixelRatio();
return true;
}
return QQuickImagePrivate::updateDevicePixelRatio(targetDevicePixelRatio, scalable);
}
void QQuickIconImage::load()
{
Q_D(QQuickIconImage);
// Both geometryChange() and QQuickImageBase::sourceSizeChanged()
// (which we connect to load() in the constructor) can be called as a result
// of load() changing the various sizes, so we must check that we're not recursing.
if (d->updatingIcon)
return;
d->updatingIcon = true;
QSize size = d->sourcesize;
// If no size is specified for theme icons, it will use the smallest available size.
if (size.width() <= 0)
size.setWidth(width());
if (size.height() <= 0)
size.setHeight(height());
const qreal dpr = d->devicePixelRatioForLoading();
if (const auto *entry = QIconLoaderEngine::entryForSize(d->icon, size * dpr, qCeil(dpr))) {
// First, try to load an icon from the theme (index.theme).
QQmlContext *context = qmlContext(this);
const QUrl entryUrl = QUrl::fromLocalFile(entry->filename);
d->url = context ? context->resolvedUrl(entryUrl) : entryUrl;
d->isThemeIcon = true;
} else if (d->source.isEmpty()) {
// Then, try loading it through a platform icon engine.
std::unique_ptr<QIconEngine> iconEngine(QIconLoader::instance()->iconEngine(d->icon.iconName));
if (iconEngine && !iconEngine->isNull()) {
// ### TODO that's the best we can do for now to select different pixmaps based on the
// QuickItem's state. QQuickIconImage cannot know about the state of the control that
// uses it without adding more properties that are then synced up with the control.
const QIcon::Mode mode = isEnabled() ? QIcon::Normal : QIcon::Disabled;
const QImage image = iconEngine->scaledPixmap(size, mode, QIcon::Off, dpr).toImage();
d->devicePixelRatio = image.devicePixelRatio();
d->setImage(image);
}
} else {
// Either we failed to load a named icon or the source was set instead; use that.
d->url = d->source;
d->isThemeIcon = false;
}
if (!d->url.isEmpty())
QQuickImage::load();
d->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(currentPix->width(), currentPix->height()) / effectiveDevicePixelRatio();
if (pixmapSize.width() > q->width() || pixmapSize.height() > q->height())
q->setFillMode(QQuickImage::PreserveAspectFit);
else
q->setFillMode(QQuickImage::Pad);
updatingFillMode = false;
}
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.entries.clear();
d->icon = QIconLoader::instance()->loadIcon(name);
if (d->icon.iconName.isEmpty())
d->icon.iconName = name;
if (isComponentComplete())
load();
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())
load();
emit colorChanged();
}
void QQuickIconImage::setSource(const QUrl &source)
{
Q_D(QQuickIconImage);
if (d->source == source)
return;
d->source = source;
if (isComponentComplete())
load();
emit sourceChanged(source);
}
void QQuickIconImage::snapPositionTo(QPointF pos)
{
// Ensure that we are placed on an integer position relative to the owning control. We assume
// that there is exactly one intermediate parent item between us and the control (in practice,
// the contentItem). The idea is to enable the app, by placing the controls at integer
// positions, to avoid the image being smoothed over pixel boundaries in the basic, DPR=1 case.
QPointF offset;
if (parentItem())
offset = parentItem()->position();
QPointF offsetPos(std::round(offset.x() + pos.x()), std::round(offset.y() + pos.y()));
setPosition(offsetPos - offset);
}
void QQuickIconImage::componentComplete()
{
QQuickImage::componentComplete();
load();
}
void QQuickIconImage::geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry)
{
QQuickImage::geometryChange(newGeometry, oldGeometry);
if (isComponentComplete() && newGeometry.size() != oldGeometry.size())
load();
}
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->currentPix->image();
if (!image.isNull()) {
QPainter painter(&image);
painter.setCompositionMode(QPainter::CompositionMode_SourceIn);
painter.fillRect(image.rect(), d->color);
d->currentPix->setImage(image);
}
}
}
QT_END_NAMESPACE
#include "moc_qquickiconimage_p.cpp"