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Diffstat (limited to 'src/gui/image/qicon.cpp')
| -rw-r--r-- | src/gui/image/qicon.cpp | 1256 |
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diff --git a/src/gui/image/qicon.cpp b/src/gui/image/qicon.cpp deleted file mode 100644 index 724205f2fc..0000000000 --- a/src/gui/image/qicon.cpp +++ /dev/null @@ -1,1256 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 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 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qicon.h" -#include "qicon_p.h" -#include "qiconengine.h" -#include "qiconengineplugin.h" -#include "private/qfactoryloader_p.h" -#include "private/qiconloader_p.h" -#include "qapplication.h" -#include "qstyleoption.h" -#include "qpainter.h" -#include "qfileinfo.h" -#include "qstyle.h" -#include "qpixmapcache.h" -#include "qvariant.h" -#include "qcache.h" -#include "qdebug.h" -#include "private/qguiplatformplugin_p.h" - -#ifdef Q_WS_MAC -#include <private/qt_mac_p.h> -#include <private/qt_cocoa_helpers_mac_p.h> -#endif - -#ifdef Q_WS_X11 -#include "private/qt_x11_p.h" -#include "private/qkde_p.h" -#endif - -#include "private/qstylehelper_p.h" - -#ifndef QT_NO_ICON -QT_BEGIN_NAMESPACE - -/*! - \enum QIcon::Mode - - This enum type describes the mode for which a pixmap is intended - to be used. The currently defined modes are: - - \value Normal - Display the pixmap when the user is - not interacting with the icon, but the - functionality represented by the icon is available. - \value Disabled - Display the pixmap when the - functionality represented by the icon is not available. - \value Active - Display the pixmap when the - functionality represented by the icon is available and - the user is interacting with the icon, for example, moving the - mouse over it or clicking it. - \value Selected - Display the pixmap when the item represented by the icon is - selected. -*/ - -/*! - \enum QIcon::State - - This enum describes the state for which a pixmap is intended to be - used. The \e state can be: - - \value Off Display the pixmap when the widget is in an "off" state - \value On Display the pixmap when the widget is in an "on" state -*/ - -static QBasicAtomicInt serialNumCounter = Q_BASIC_ATOMIC_INITIALIZER(1); - -static void qt_cleanup_icon_cache(); -namespace { - class IconCache: public QCache<QString, QIcon> - { - public: - IconCache() - { - // ### FIXME: needs to be re-added if qApp is re-created - qAddPostRoutine(qt_cleanup_icon_cache); - } - }; -} -Q_GLOBAL_STATIC(IconCache, qtIconCache) - -static void qt_cleanup_icon_cache() -{ - qtIconCache()->clear(); -} - -QIconPrivate::QIconPrivate() - : engine(0), - serialNum(serialNumCounter.fetchAndAddRelaxed(1)), - detach_no(0), - engine_version(2), - v1RefCount(0) -{ -} - -QPixmapIconEngine::QPixmapIconEngine() -{ -} - -QPixmapIconEngine::QPixmapIconEngine(const QPixmapIconEngine &other) - : QIconEngineV2(other), pixmaps(other.pixmaps) -{ -} - -QPixmapIconEngine::~QPixmapIconEngine() -{ -} - -void QPixmapIconEngine::paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state) -{ - QSize pixmapSize = rect.size(); -#if defined(Q_WS_MAC) - pixmapSize *= qt_mac_get_scalefactor(); -#endif - painter->drawPixmap(rect, pixmap(pixmapSize, mode, state)); -} - -static inline int area(const QSize &s) { return s.width() * s.height(); } - -// returns the smallest of the two that is still larger than or equal to size. -static QPixmapIconEngineEntry *bestSizeMatch( const QSize &size, QPixmapIconEngineEntry *pa, QPixmapIconEngineEntry *pb) -{ - int s = area(size); - if (pa->size == QSize() && pa->pixmap.isNull()) { - pa->pixmap = QPixmap(pa->fileName); - pa->size = pa->pixmap.size(); - } - int a = area(pa->size); - if (pb->size == QSize() && pb->pixmap.isNull()) { - pb->pixmap = QPixmap(pb->fileName); - pb->size = pb->pixmap.size(); - } - int b = area(pb->size); - int res = a; - if (qMin(a,b) >= s) - res = qMin(a,b); - else - res = qMax(a,b); - if (res == a) - return pa; - return pb; -} - -QPixmapIconEngineEntry *QPixmapIconEngine::tryMatch(const QSize &size, QIcon::Mode mode, QIcon::State state) -{ - QPixmapIconEngineEntry *pe = 0; - for (int i = 0; i < pixmaps.count(); ++i) - if (pixmaps.at(i).mode == mode && pixmaps.at(i).state == state) { - if (pe) - pe = bestSizeMatch(size, &pixmaps[i], pe); - else - pe = &pixmaps[i]; - } - return pe; -} - - -QPixmapIconEngineEntry *QPixmapIconEngine::bestMatch(const QSize &size, QIcon::Mode mode, QIcon::State state, bool sizeOnly) -{ - QPixmapIconEngineEntry *pe = tryMatch(size, mode, state); - while (!pe){ - QIcon::State oppositeState = (state == QIcon::On) ? QIcon::Off : QIcon::On; - if (mode == QIcon::Disabled || mode == QIcon::Selected) { - QIcon::Mode oppositeMode = (mode == QIcon::Disabled) ? QIcon::Selected : QIcon::Disabled; - if ((pe = tryMatch(size, QIcon::Normal, state))) - break; - if ((pe = tryMatch(size, QIcon::Active, state))) - break; - if ((pe = tryMatch(size, mode, oppositeState))) - break; - if ((pe = tryMatch(size, QIcon::Normal, oppositeState))) - break; - if ((pe = tryMatch(size, QIcon::Active, oppositeState))) - break; - if ((pe = tryMatch(size, oppositeMode, state))) - break; - if ((pe = tryMatch(size, oppositeMode, oppositeState))) - break; - } else { - QIcon::Mode oppositeMode = (mode == QIcon::Normal) ? QIcon::Active : QIcon::Normal; - if ((pe = tryMatch(size, oppositeMode, state))) - break; - if ((pe = tryMatch(size, mode, oppositeState))) - break; - if ((pe = tryMatch(size, oppositeMode, oppositeState))) - break; - if ((pe = tryMatch(size, QIcon::Disabled, state))) - break; - if ((pe = tryMatch(size, QIcon::Selected, state))) - break; - if ((pe = tryMatch(size, QIcon::Disabled, oppositeState))) - break; - if ((pe = tryMatch(size, QIcon::Selected, oppositeState))) - break; - } - - if (!pe) - return pe; - } - - if (sizeOnly ? (pe->size.isNull() || !pe->size.isValid()) : pe->pixmap.isNull()) { - pe->pixmap = QPixmap(pe->fileName); - if (!pe->pixmap.isNull()) - pe->size = pe->pixmap.size(); - } - - return pe; -} - -QPixmap QPixmapIconEngine::pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state) -{ - QPixmap pm; - QPixmapIconEngineEntry *pe = bestMatch(size, mode, state, false); - if (pe) - pm = pe->pixmap; - - if (pm.isNull()) { - int idx = pixmaps.count(); - while (--idx >= 0) { - if (pe == &pixmaps[idx]) { - pixmaps.remove(idx); - break; - } - } - if (pixmaps.isEmpty()) - return pm; - else - return pixmap(size, mode, state); - } - - QSize actualSize = pm.size(); - if (!actualSize.isNull() && (actualSize.width() > size.width() || actualSize.height() > size.height())) - actualSize.scale(size, Qt::KeepAspectRatio); - - QString key = QLatin1Literal("qt_") - % HexString<quint64>(pm.cacheKey()) - % HexString<uint>(pe->mode) - % HexString<quint64>(QApplication::palette().cacheKey()) - % HexString<uint>(actualSize.width()) - % HexString<uint>(actualSize.height()); - - if (mode == QIcon::Active) { - if (QPixmapCache::find(key % HexString<uint>(mode), pm)) - return pm; // horray - if (QPixmapCache::find(key % HexString<uint>(QIcon::Normal), pm)) { - QStyleOption opt(0); - opt.palette = QApplication::palette(); - QPixmap active = QApplication::style()->generatedIconPixmap(QIcon::Active, pm, &opt); - if (pm.cacheKey() == active.cacheKey()) - return pm; - } - } - - if (!QPixmapCache::find(key % HexString<uint>(mode), pm)) { - if (pm.size() != actualSize) - pm = pm.scaled(actualSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation); - if (pe->mode != mode && mode != QIcon::Normal) { - QStyleOption opt(0); - opt.palette = QApplication::palette(); - QPixmap generated = QApplication::style()->generatedIconPixmap(mode, pm, &opt); - if (!generated.isNull()) - pm = generated; - } - QPixmapCache::insert(key % HexString<uint>(mode), pm); - } - return pm; -} - -QSize QPixmapIconEngine::actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state) -{ - QSize actualSize; - if (QPixmapIconEngineEntry *pe = bestMatch(size, mode, state, true)) - actualSize = pe->size; - - if (actualSize.isNull()) - return actualSize; - - if (!actualSize.isNull() && (actualSize.width() > size.width() || actualSize.height() > size.height())) - actualSize.scale(size, Qt::KeepAspectRatio); - return actualSize; -} - -void QPixmapIconEngine::addPixmap(const QPixmap &pixmap, QIcon::Mode mode, QIcon::State state) -{ - if (!pixmap.isNull()) { - QPixmapIconEngineEntry *pe = tryMatch(pixmap.size(), mode, state); - if(pe && pe->size == pixmap.size()) { - pe->pixmap = pixmap; - pe->fileName.clear(); - } else { - pixmaps += QPixmapIconEngineEntry(pixmap, mode, state); - } - } -} - -void QPixmapIconEngine::addFile(const QString &fileName, const QSize &_size, QIcon::Mode mode, QIcon::State state) -{ - if (!fileName.isEmpty()) { - QSize size = _size; - QPixmap pixmap; - - QString abs = fileName; - if (fileName.at(0) != QLatin1Char(':')) - abs = QFileInfo(fileName).absoluteFilePath(); - - for (int i = 0; i < pixmaps.count(); ++i) { - if (pixmaps.at(i).mode == mode && pixmaps.at(i).state == state) { - QPixmapIconEngineEntry *pe = &pixmaps[i]; - if(size == QSize()) { - pixmap = QPixmap(abs); - size = pixmap.size(); - } - if (pe->size == QSize() && pe->pixmap.isNull()) { - pe->pixmap = QPixmap(pe->fileName); - pe->size = pe->pixmap.size(); - } - if(pe->size == size) { - pe->pixmap = pixmap; - pe->fileName = abs; - return; - } - } - } - QPixmapIconEngineEntry e(abs, size, mode, state); - e.pixmap = pixmap; - pixmaps += e; - } -} - -QString QPixmapIconEngine::key() const -{ - return QLatin1String("QPixmapIconEngine"); -} - -QIconEngineV2 *QPixmapIconEngine::clone() const -{ - return new QPixmapIconEngine(*this); -} - -bool QPixmapIconEngine::read(QDataStream &in) -{ - int num_entries; - QPixmap pm; - QString fileName; - QSize sz; - uint mode; - uint state; - - in >> num_entries; - for (int i=0; i < num_entries; ++i) { - if (in.atEnd()) { - pixmaps.clear(); - return false; - } - in >> pm; - in >> fileName; - in >> sz; - in >> mode; - in >> state; - if (pm.isNull()) { - addFile(fileName, sz, QIcon::Mode(mode), QIcon::State(state)); - } else { - QPixmapIconEngineEntry pe(fileName, sz, QIcon::Mode(mode), QIcon::State(state)); - pe.pixmap = pm; - pixmaps += pe; - } - } - return true; -} - -bool QPixmapIconEngine::write(QDataStream &out) const -{ - int num_entries = pixmaps.size(); - out << num_entries; - for (int i=0; i < num_entries; ++i) { - if (pixmaps.at(i).pixmap.isNull()) - out << QPixmap(pixmaps.at(i).fileName); - else - out << pixmaps.at(i).pixmap; - out << pixmaps.at(i).fileName; - out << pixmaps.at(i).size; - out << (uint) pixmaps.at(i).mode; - out << (uint) pixmaps.at(i).state; - } - return true; -} - -void QPixmapIconEngine::virtual_hook(int id, void *data) -{ - switch (id) { - case QIconEngineV2::AvailableSizesHook: { - QIconEngineV2::AvailableSizesArgument &arg = - *reinterpret_cast<QIconEngineV2::AvailableSizesArgument*>(data); - arg.sizes.clear(); - for (int i = 0; i < pixmaps.size(); ++i) { - QPixmapIconEngineEntry &pe = pixmaps[i]; - if (pe.size == QSize() && pe.pixmap.isNull()) { - pe.pixmap = QPixmap(pe.fileName); - pe.size = pe.pixmap.size(); - } - if (pe.mode == arg.mode && pe.state == arg.state && !pe.size.isEmpty()) - arg.sizes.push_back(pe.size); - } - break; - } - default: - QIconEngineV2::virtual_hook(id, data); - } -} - -#ifndef QT_NO_LIBRARY -Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader, - (QIconEngineFactoryInterface_iid, QLatin1String("/iconengines"), Qt::CaseInsensitive)) -Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loaderV2, - (QIconEngineFactoryInterfaceV2_iid, QLatin1String("/iconengines"), Qt::CaseInsensitive)) -#endif - - - -/*! - \class QIcon - - \brief The QIcon class provides scalable icons in different modes - and states. - - \ingroup painting - \ingroup shared - - - A QIcon can generate smaller, larger, active, and disabled pixmaps - from the set of pixmaps it is given. Such pixmaps are used by Qt - widgets to show an icon representing a particular action. - - The simplest use of QIcon is to create one from a QPixmap file or - resource, and then use it, allowing Qt to work out all the required - icon styles and sizes. For example: - - \snippet doc/src/snippets/code/src_gui_image_qicon.cpp 0 - - To undo a QIcon, simply set a null icon in its place: - - \snippet doc/src/snippets/code/src_gui_image_qicon.cpp 1 - - Use the QImageReader::supportedImageFormats() and - QImageWriter::supportedImageFormats() functions to retrieve a - complete list of the supported file formats. - - When you retrieve a pixmap using pixmap(QSize, Mode, State), and no - pixmap for this given size, mode and state has been added with - addFile() or addPixmap(), then QIcon will generate one on the - fly. This pixmap generation happens in a QIconEngineV2. The default - engine scales pixmaps down if required, but never up, and it uses - the current style to calculate a disabled appearance. By using - custom icon engines, you can customize every aspect of generated - icons. With QIconEnginePluginV2 it is possible to register different - icon engines for different file suffixes, making it possible for - third parties to provide additional icon engines to those included - with Qt. - - \note Since Qt 4.2, an icon engine that supports SVG is included. - - \section1 Making Classes that Use QIcon - - If you write your own widgets that have an option to set a small - pixmap, consider allowing a QIcon to be set for that pixmap. The - Qt class QToolButton is an example of such a widget. - - Provide a method to set a QIcon, and when you draw the icon, choose - whichever pixmap is appropriate for the current state of your widget. - For example: - \snippet doc/src/snippets/code/src_gui_image_qicon.cpp 2 - - You might also make use of the \c Active mode, perhaps making your - widget \c Active when the mouse is over the widget (see \l - QWidget::enterEvent()), while the mouse is pressed pending the - release that will activate the function, or when it is the currently - selected item. If the widget can be toggled, the "On" mode might be - used to draw a different icon. - - \img icon.png QIcon - - \sa {fowler}{GUI Design Handbook: Iconic Label}, {Icons Example} -*/ - - -/*! - Constructs a null icon. -*/ -QIcon::QIcon() - : d(0) -{ -} - -/*! - Constructs an icon from a \a pixmap. - */ -QIcon::QIcon(const QPixmap &pixmap) - :d(0) -{ - addPixmap(pixmap); -} - -/*! - Constructs a copy of \a other. This is very fast. -*/ -QIcon::QIcon(const QIcon &other) - :d(other.d) -{} - -/*! - Constructs an icon from the file with the given \a fileName. The - file will be loaded on demand. - - If \a fileName contains a relative path (e.g. the filename only) - the relevant file must be found relative to the runtime working - directory. - - The file name can be either refer to an actual file on disk or to - one of the application's embedded resources. See the - \l{resources.html}{Resource System} overview for details on how to - embed images and other resource files in the application's - executable. - - Use the QImageReader::supportedImageFormats() and - QImageWriter::supportedImageFormats() functions to retrieve a - complete list of the supported file formats. -*/ -QIcon::QIcon(const QString &fileName) - : d(0) -{ - addFile(fileName); -} - - -/*! - Creates an icon with a specific icon \a engine. The icon takes - ownership of the engine. -*/ -QIcon::QIcon(QIconEngine *engine) - :d(new QIconPrivate) -{ - d->engine_version = 1; - d->engine = engine; - d->v1RefCount = new QAtomicInt(1); -} - -/*! - Creates an icon with a specific icon \a engine. The icon takes - ownership of the engine. -*/ -QIcon::QIcon(QIconEngineV2 *engine) - :d(new QIconPrivate) -{ - d->engine_version = 2; - d->engine = engine; -} - -/*! - Destroys the icon. -*/ -QIcon::~QIcon() -{} - -/*! - Assigns the \a other icon to this icon and returns a reference to - this icon. -*/ -QIcon &QIcon::operator=(const QIcon &other) -{ - d = other.d; - return *this; -} - -/*! - \fn void QIcon::swap(QIcon &other) - \since 4.8 - - Swaps icon \a other with this icon. This operation is very - fast and never fails. -*/ - -/*! - Returns the icon as a QVariant. -*/ -QIcon::operator QVariant() const -{ - return QVariant(QVariant::Icon, this); -} - -/*! \obsolete - - Returns a number that identifies the contents of this - QIcon object. Distinct QIcon objects can have - the same serial number if they refer to the same contents - (but they don't have to). Also, the serial number of - a QIcon object may change during its lifetime. - - Use cacheKey() instead. - - A null icon always has a serial number of 0. - - Serial numbers are mostly useful in conjunction with caching. - - \sa QPixmap::serialNumber() -*/ - -int QIcon::serialNumber() const -{ - return d ? d->serialNum : 0; -} - -/*! - Returns a number that identifies the contents of this QIcon - object. Distinct QIcon objects can have the same key if - they refer to the same contents. - \since 4.3 - - The cacheKey() will change when the icon is altered via - addPixmap() or addFile(). - - Cache keys are mostly useful in conjunction with caching. - - \sa QPixmap::cacheKey() -*/ -qint64 QIcon::cacheKey() const -{ - if (!d) - return 0; - return (((qint64) d->serialNum) << 32) | ((qint64) (d->detach_no)); -} - -/*! - Returns a pixmap with the requested \a size, \a mode, and \a - state, generating one if necessary. The pixmap might be smaller than - requested, but never larger. - - \sa actualSize(), paint() -*/ -QPixmap QIcon::pixmap(const QSize &size, Mode mode, State state) const -{ - if (!d) - return QPixmap(); - return d->engine->pixmap(size, mode, state); -} - -/*! - \fn QPixmap QIcon::pixmap(int w, int h, Mode mode = Normal, State state = Off) const - - \overload - - Returns a pixmap of size QSize(\a w, \a h). The pixmap might be smaller than - requested, but never larger. -*/ - -/*! - \fn QPixmap QIcon::pixmap(int extent, Mode mode = Normal, State state = Off) const - - \overload - - Returns a pixmap of size QSize(\a extent, \a extent). The pixmap might be smaller - than requested, but never larger. -*/ - -/*! Returns the actual size of the icon for the requested \a size, \a - mode, and \a state. The result might be smaller than requested, but - never larger. - - \sa pixmap(), paint() -*/ -QSize QIcon::actualSize(const QSize &size, Mode mode, State state) const -{ - if (!d) - return QSize(); - return d->engine->actualSize(size, mode, state); -} - - -/*! - Uses the \a painter to paint the icon with specified \a alignment, - required \a mode, and \a state into the rectangle \a rect. - - \sa actualSize(), pixmap() -*/ -void QIcon::paint(QPainter *painter, const QRect &rect, Qt::Alignment alignment, Mode mode, State state) const -{ - if (!d || !painter) - return; - QRect alignedRect = QStyle::alignedRect(painter->layoutDirection(), alignment, d->engine->actualSize(rect.size(), mode, state), rect); - d->engine->paint(painter, alignedRect, mode, state); -} - -/*! - \fn void QIcon::paint(QPainter *painter, int x, int y, int w, int h, Qt::Alignment alignment, - Mode mode, State state) const - - \overload - - Paints the icon into the rectangle QRect(\a x, \a y, \a w, \a h). -*/ - -/*! - Returns true if the icon is empty; otherwise returns false. - - An icon is empty if it has neither a pixmap nor a filename. - - Note: Even a non-null icon might not be able to create valid - pixmaps, eg. if the file does not exist or cannot be read. -*/ -bool QIcon::isNull() const -{ - return !d; -} - -/*!\internal - */ -bool QIcon::isDetached() const -{ - return !d || d->ref == 1; -} - -/*! \internal - */ -void QIcon::detach() -{ - if (d) { - if (d->ref != 1) { - QIconPrivate *x = new QIconPrivate; - if (d->engine_version > 1) { - QIconEngineV2 *engine = static_cast<QIconEngineV2 *>(d->engine); - x->engine = engine->clone(); - } else { - x->engine = d->engine; - x->v1RefCount = d->v1RefCount; - x->v1RefCount->ref(); - } - x->engine_version = d->engine_version; - d = x; - } - ++d->detach_no; - } -} - -/*! - Adds \a pixmap to the icon, as a specialization for \a mode and - \a state. - - Custom icon engines are free to ignore additionally added - pixmaps. - - \sa addFile() -*/ -void QIcon::addPixmap(const QPixmap &pixmap, Mode mode, State state) -{ - if (pixmap.isNull()) - return; - if (!d) { - d = new QIconPrivate; - d->engine = new QPixmapIconEngine; - } else { - detach(); - } - d->engine->addPixmap(pixmap, mode, state); -} - - -/*! Adds an image from the file with the given \a fileName to the - icon, as a specialization for \a size, \a mode and \a state. The - file will be loaded on demand. Note: custom icon engines are free - to ignore additionally added pixmaps. - - If \a fileName contains a relative path (e.g. the filename only) - the relevant file must be found relative to the runtime working - directory. - - The file name can be either refer to an actual file on disk or to - one of the application's embedded resources. See the - \l{resources.html}{Resource System} overview for details on how to - embed images and other resource files in the application's - executable. - - Use the QImageReader::supportedImageFormats() and - QImageWriter::supportedImageFormats() functions to retrieve a - complete list of the supported file formats. - - Note: When you add a non-empty filename to a QIcon, the icon becomes - non-null, even if the file doesn't exist or points to a corrupt file. - - \sa addPixmap() - */ -void QIcon::addFile(const QString &fileName, const QSize &size, Mode mode, State state) -{ - if (fileName.isEmpty()) - return; - if (!d) { -#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS) - QFileInfo info(fileName); - QString suffix = info.suffix(); - if (!suffix.isEmpty()) { - // first try version 2 engines.. - if (QIconEngineFactoryInterfaceV2 *factory = qobject_cast<QIconEngineFactoryInterfaceV2*>(loaderV2()->instance(suffix))) { - if (QIconEngine *engine = factory->create(fileName)) { - d = new QIconPrivate; - d->engine = engine; - } - } - // ..then fall back and try to load version 1 engines - if (!d) { - if (QIconEngineFactoryInterface *factory = qobject_cast<QIconEngineFactoryInterface*>(loader()->instance(suffix))) { - if (QIconEngine *engine = factory->create(fileName)) { - d = new QIconPrivate; - d->engine = engine; - d->engine_version = 1; - d->v1RefCount = new QAtomicInt(1); - } - } - } - } -#endif - // ...then fall back to the default engine - if (!d) { - d = new QIconPrivate; - d->engine = new QPixmapIconEngine; - } - } else { - detach(); - } - d->engine->addFile(fileName, size, mode, state); -} - -/*! - \since 4.5 - - Returns a list of available icon sizes for the specified \a mode and - \a state. -*/ -QList<QSize> QIcon::availableSizes(Mode mode, State state) const -{ - if (!d || !d->engine || d->engine_version < 2) - return QList<QSize>(); - QIconEngineV2 *engine = static_cast<QIconEngineV2*>(d->engine); - return engine->availableSizes(mode, state); -} - -/*! - \since 4.7 - - Returns the name used to create the icon, if available. - - Depending on the way the icon was created, it may have an associated - name. This is the case for icons created with fromTheme() or icons - using a QIconEngine which supports the QIconEngineV2::IconNameHook. - - \sa fromTheme(), QIconEngine -*/ -QString QIcon::name() const -{ - if (!d || !d->engine || d->engine_version < 2) - return QString(); - QIconEngineV2 *engine = static_cast<QIconEngineV2*>(d->engine); - return engine->iconName(); -} - -/*! - \since 4.6 - - Sets the search paths for icon themes to \a paths. - \sa themeSearchPaths(), fromTheme(), setThemeName() -*/ -void QIcon::setThemeSearchPaths(const QStringList &paths) -{ - QIconLoader::instance()->setThemeSearchPath(paths); -} - -/*! - \since 4.6 - - Returns the search paths for icon themes. - - The default value will depend on the platform: - - On X11, the search path will use the XDG_DATA_DIRS environment - variable if available. - - By default all platforms will have the resource directory - \c{:\icons} as a fallback. You can use "rcc -project" to generate a - resource file from your icon theme. - - \sa setThemeSearchPaths(), fromTheme(), setThemeName() -*/ -QStringList QIcon::themeSearchPaths() -{ - return QIconLoader::instance()->themeSearchPaths(); -} - -/*! - \since 4.6 - - Sets the current icon theme to \a name. - - The \a name should correspond to a directory name in the - themeSearchPath() containing an index.theme - file describing it's contents. - - \sa themeSearchPaths(), themeName() -*/ -void QIcon::setThemeName(const QString &name) -{ - QIconLoader::instance()->setThemeName(name); -} - -/*! - \since 4.6 - - Returns the name of the current icon theme. - - On X11, the current icon theme depends on your desktop - settings. On other platforms it is not set by default. - - \sa setThemeName(), themeSearchPaths(), fromTheme(), - hasThemeIcon() -*/ -QString QIcon::themeName() -{ - return QIconLoader::instance()->themeName(); -} - -/*! - \since 4.6 - - Returns the QIcon corresponding to \a name in the current - icon theme. If no such icon is found in the current theme - \a fallback is returned instead. - - The latest version of the freedesktop icon specification and naming - specification can be obtained here: - - \list - \o \l{http://standards.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html} - \o \l{http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html} - \endlist - - To fetch an icon from the current icon theme: - - \snippet doc/src/snippets/code/src_gui_image_qicon.cpp 3 - - Or if you want to provide a guaranteed fallback for platforms that - do not support theme icons, you can use the second argument: - - \snippet doc/src/snippets/code/src_gui_image_qicon.cpp 4 - - \note By default, only X11 will support themed icons. In order to - use themed icons on Mac and Windows, you will have to bundle a - compliant theme in one of your themeSearchPaths() and set the - appropriate themeName(). - - \sa themeName(), setThemeName(), themeSearchPaths() -*/ -QIcon QIcon::fromTheme(const QString &name, const QIcon &fallback) -{ - QIcon icon; - - if (qtIconCache()->contains(name)) { - icon = *qtIconCache()->object(name); - } else { - QIcon *cachedIcon = new QIcon(new QIconLoaderEngine(name)); - qtIconCache()->insert(name, cachedIcon); - icon = *cachedIcon; - } - - // Note the qapp check is to allow lazy loading of static icons - // Supporting fallbacks will not work for this case. - if (qApp && icon.availableSizes().isEmpty()) - return fallback; - - return icon; -} - -/*! - \since 4.6 - - Returns true if there is an icon available for \a name in the - current icon theme, otherwise returns false. - - \sa themeSearchPaths(), fromTheme(), setThemeName() -*/ -bool QIcon::hasThemeIcon(const QString &name) -{ - QIcon icon = fromTheme(name); - - return !icon.isNull(); -} - - -/***************************************************************************** - QIcon stream functions - *****************************************************************************/ -#if !defined(QT_NO_DATASTREAM) -/*! - \fn QDataStream &operator<<(QDataStream &stream, const QIcon &icon) - \relates QIcon - \since 4.2 - - Writes the given \a icon to the given \a stream as a PNG - image. If the icon contains more than one image, all images will - be written to the stream. Note that writing the stream to a file - will not produce a valid image file. -*/ - -QDataStream &operator<<(QDataStream &s, const QIcon &icon) -{ - if (s.version() >= QDataStream::Qt_4_3) { - if (icon.isNull()) { - s << QString(); - } else { - if (icon.d->engine_version > 1) { - QIconEngineV2 *engine = static_cast<QIconEngineV2 *>(icon.d->engine); - s << engine->key(); - engine->write(s); - } else { - // not really supported - qWarning("QIcon: Cannot stream QIconEngine. Use QIconEngineV2 instead."); - } - } - } else if (s.version() == QDataStream::Qt_4_2) { - if (icon.isNull()) { - s << 0; - } else { - QPixmapIconEngine *engine = static_cast<QPixmapIconEngine *>(icon.d->engine); - int num_entries = engine->pixmaps.size(); - s << num_entries; - for (int i=0; i < num_entries; ++i) { - s << engine->pixmaps.at(i).pixmap; - s << engine->pixmaps.at(i).fileName; - s << engine->pixmaps.at(i).size; - s << (uint) engine->pixmaps.at(i).mode; - s << (uint) engine->pixmaps.at(i).state; - } - } - } else { - s << QPixmap(icon.pixmap(22,22)); - } - return s; -} - -/*! - \fn QDataStream &operator>>(QDataStream &stream, QIcon &icon) - \relates QIcon - \since 4.2 - - Reads an image, or a set of images, from the given \a stream into - the given \a icon. -*/ - -QDataStream &operator>>(QDataStream &s, QIcon &icon) -{ - if (s.version() >= QDataStream::Qt_4_3) { - icon = QIcon(); - QString key; - s >> key; - if (key == QLatin1String("QPixmapIconEngine")) { - icon.d = new QIconPrivate; - QIconEngineV2 *engine = new QPixmapIconEngine; - icon.d->engine = engine; - engine->read(s); - } else if (key == QLatin1String("QIconLoaderEngine")) { - icon.d = new QIconPrivate; - QIconEngineV2 *engine = new QIconLoaderEngine(); - icon.d->engine = engine; - engine->read(s); -#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS) - } else if (QIconEngineFactoryInterfaceV2 *factory = qobject_cast<QIconEngineFactoryInterfaceV2*>(loaderV2()->instance(key))) { - if (QIconEngineV2 *engine= factory->create()) { - icon.d = new QIconPrivate; - icon.d->engine = engine; - engine->read(s); - } -#endif - } - } else if (s.version() == QDataStream::Qt_4_2) { - icon = QIcon(); - int num_entries; - QPixmap pm; - QString fileName; - QSize sz; - uint mode; - uint state; - - s >> num_entries; - for (int i=0; i < num_entries; ++i) { - s >> pm; - s >> fileName; - s >> sz; - s >> mode; - s >> state; - if (pm.isNull()) - icon.addFile(fileName, sz, QIcon::Mode(mode), QIcon::State(state)); - else - icon.addPixmap(pm, QIcon::Mode(mode), QIcon::State(state)); - } - } else { - QPixmap pm; - s >> pm; - icon.addPixmap(pm); - } - return s; -} - -#endif //QT_NO_DATASTREAM - - -#ifdef QT3_SUPPORT - -static int widths[2] = { 22, 32 }; -static int heights[2] = { 22, 32 }; - -static QSize pixmapSizeHelper(QIcon::Size which) -{ - int i = 0; - if (which == QIcon::Large) - i = 1; - return QSize(widths[i], heights[i]); -} - -/*! - \enum QIcon::Size - \compat - - \value Small Use QStyle::pixelMetric(QStyle::PM_SmallIconSize) instead. - \value Large Use QStyle::pixelMetric(QStyle::PM_LargeIconSize) instead. - \value Automatic N/A. -*/ - -/*! - Use pixmap(QSize(...), \a mode, \a state), where the first - argument is an appropriate QSize instead of a \l Size value. - - \sa pixmapSize() -*/ -QPixmap QIcon::pixmap(Size size, Mode mode, State state) const -{ return pixmap(pixmapSizeHelper(size), mode, state); } - -/*! - Use pixmap(QSize(...), mode, \a state), where the first argument - is an appropriate QSize instead of a \l Size value, and the - second argument is QIcon::Normal or QIcon::Disabled, depending on - the value of \a enabled. - - \sa pixmapSize() -*/ -QPixmap QIcon::pixmap(Size size, bool enabled, State state) const -{ return pixmap(pixmapSizeHelper(size), enabled ? Normal : Disabled, state); } - -/*! - Use one of the other pixmap() overloads. -*/ -QPixmap QIcon::pixmap() const -{ return pixmap(pixmapSizeHelper(Small), Normal, Off); } - -/*! - The pixmap() function now takes a QSize instead of a QIcon::Size, - so there is no need for this function in new code. -*/ -void QIcon::setPixmapSize(Size which, const QSize &size) -{ - int i = 0; - if (which == Large) - i = 1; - widths[i] = size.width(); - heights[i] = size.height(); -} - -/*! - Use QStyle::pixelMetric() with QStyle::PM_SmallIconSize or - QStyle::PM_LargeIconSize as the first argument, depending on \a - which. -*/ -QSize QIcon::pixmapSize(Size which) -{ - return pixmapSizeHelper(which); -} - -/*! - \fn void QIcon::reset(const QPixmap &pixmap, Size size) - - Use the constructor that takes a QPixmap and operator=(). -*/ - -/*! - \fn void QIcon::setPixmap(const QPixmap &pixmap, Size size, Mode mode, State state) - - Use addPixmap(\a pixmap, \a mode, \a state) instead. The \a size - parameter is ignored. -*/ - -/*! - \fn void QIcon::setPixmap(const QString &fileName, Size size, Mode mode, State state) - - Use addFile(\a fileName, \a mode, \a state) instead. The \a size - parameter is ignored. -*/ - -#endif // QT3_SUPPORT - -/*! - \fn DataPtr &QIcon::data_ptr() - \internal -*/ - -/*! - \typedef QIcon::DataPtr - \internal -*/ - -QT_END_NAMESPACE -#endif //QT_NO_ICON |