diff options
Diffstat (limited to 'src/widgets/itemviews/qfileiconprovider.cpp')
| -rw-r--r-- | src/widgets/itemviews/qfileiconprovider.cpp | 163 |
1 files changed, 114 insertions, 49 deletions
diff --git a/src/widgets/itemviews/qfileiconprovider.cpp b/src/widgets/itemviews/qfileiconprovider.cpp index 14948111e5..1cc3a2a905 100644 --- a/src/widgets/itemviews/qfileiconprovider.cpp +++ b/src/widgets/itemviews/qfileiconprovider.cpp @@ -1,7 +1,7 @@ /**************************************************************************** ** -** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ ** ** This file is part of the QtWidgets module of the Qt Toolkit. ** @@ -10,9 +10,9 @@ ** 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 Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. +** 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 @@ -23,8 +23,8 @@ ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** $QT_END_LICENSE$ @@ -39,6 +39,7 @@ #include <qpixmapcache.h> #include <private/qfunctions_p.h> #include <private/qguiapplication_p.h> +#include <private/qicon_p.h> #include <qpa/qplatformintegration.h> #include <qpa/qplatformservices.h> #include <qpa/qplatformtheme.h> @@ -57,6 +58,105 @@ QT_BEGIN_NAMESPACE +static bool isCacheable(const QFileInfo &fi); + +class QFileIconEngine : public QPixmapIconEngine +{ +public: + QFileIconEngine(const QFileIconProvider *fip, const QFileInfo &info) + : QPixmapIconEngine(), m_fileIconProvider(fip), m_fileInfo(info) + { } + + QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state) Q_DECL_OVERRIDE + { + Q_UNUSED(mode); + Q_UNUSED(state); + QPixmap pixmap; + + if (!size.isValid()) + return pixmap; + + const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme(); + if (!theme) + return pixmap; + + const QString &keyBase = QLatin1String("qt_.") + m_fileInfo.suffix().toUpper(); + + bool cacheable = isCacheable(m_fileInfo); + if (cacheable) { + QPixmapCache::find(keyBase + QString::number(size.width()), pixmap); + if (!pixmap.isNull()) + return pixmap; + } + + QPlatformTheme::IconOptions iconOptions; + if (m_fileIconProvider->options() & QFileIconProvider::DontUseCustomDirectoryIcons) + iconOptions |= QPlatformTheme::DontUseCustomDirectoryIcons; + + pixmap = theme->fileIconPixmap(m_fileInfo, size, iconOptions); + if (!pixmap.isNull()) { + if (cacheable) + QPixmapCache::insert(keyBase + QString::number(size.width()), pixmap); + } + + return pixmap; + } + + QList<QSize> availableSizes(QIcon::Mode mode = QIcon::Normal, QIcon::State state = QIcon::Off) const Q_DECL_OVERRIDE + { + Q_UNUSED(mode); + Q_UNUSED(state); + static QList<QSize> sizes; + static QPlatformTheme *theme = 0; + if (!theme) { + theme = QGuiApplicationPrivate::platformTheme(); + if (!theme) + return sizes; + + QList<int> themeSizes = theme->themeHint(QPlatformTheme::IconPixmapSizes).value<QList<int> >(); + if (themeSizes.isEmpty()) + return sizes; + + foreach (int size, themeSizes) + sizes << QSize(size, size); + } + return sizes; + } + + QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state) Q_DECL_OVERRIDE + { + const QList<QSize> &sizes = availableSizes(mode, state); + const int numberSizes = sizes.length(); + if (numberSizes == 0) + return QSize(); + + // Find the smallest available size whose area is still larger than the input + // size. Otherwise, use the largest area available size. (We don't assume the + // platform theme sizes are sorted, hence the extra logic.) + const int sizeArea = size.width() * size.height(); + QSize actualSize = sizes.first(); + int actualArea = actualSize.width() * actualSize.height(); + for (int i = 1; i < numberSizes; ++i) { + const QSize &s = sizes.at(i); + const int a = s.width() * s.height(); + if ((sizeArea <= a && a < actualArea) || (actualArea < sizeArea && actualArea < a)) { + actualSize = s; + actualArea = a; + } + } + + if (!actualSize.isNull() && (actualSize.width() > size.width() || actualSize.height() > size.height())) + actualSize.scale(size, Qt::KeepAspectRatio); + + return actualSize; + } + +private: + const QFileIconProvider *m_fileIconProvider; + QFileInfo m_fileInfo; +}; + + /*! \class QFileIconProvider @@ -86,8 +186,8 @@ QT_BEGIN_NAMESPACE cause a big performance impact over network or removable drives. */ -QFileIconProviderPrivate::QFileIconProviderPrivate() : - homePath(QDir::home().absolutePath()) +QFileIconProviderPrivate::QFileIconProviderPrivate(QFileIconProvider *q) : + q_ptr(q), homePath(QDir::home().absolutePath()) { } @@ -153,7 +253,7 @@ QIcon QFileIconProviderPrivate::getIcon(QStyle::StandardPixmap name) const */ QFileIconProvider::QFileIconProvider() - : d_ptr(new QFileIconProviderPrivate) + : d_ptr(new QFileIconProviderPrivate(this)) { } @@ -238,53 +338,18 @@ static bool isCacheable(const QFileInfo &fi) QIcon QFileIconProviderPrivate::getIcon(const QFileInfo &fi) const { - QIcon retIcon; const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme(); if (!theme) - return retIcon; + return QIcon(); QList<int> sizes = theme->themeHint(QPlatformTheme::IconPixmapSizes).value<QList<int> >(); if (sizes.isEmpty()) - return retIcon; - - const QString keyBase = QLatin1String("qt_.") + fi.suffix().toUpper(); - - bool cacheable = isCacheable(fi); - if (cacheable) { - QPixmap pixmap; - QPixmapCache::find(keyBase + QString::number(sizes.at(0)), pixmap); - if (!pixmap.isNull()) { - bool iconIsComplete = true; - retIcon.addPixmap(pixmap); - for (int i = 1; i < sizes.count(); i++) - if (QPixmapCache::find(keyBase + QString::number(sizes.at(i)), pixmap)) { - retIcon.addPixmap(pixmap); - } else { - iconIsComplete = false; - break; - } - if (iconIsComplete) - return retIcon; - } - } - - QPlatformTheme::IconOptions iconOptions; - if (options & QFileIconProvider::DontUseCustomDirectoryIcons) - iconOptions |= QPlatformTheme::DontUseCustomDirectoryIcons; - - Q_FOREACH (int size, sizes) { - QPixmap pixmap = theme->fileIconPixmap(fi, QSizeF(size, size), iconOptions); - if (!pixmap.isNull()) { - retIcon.addPixmap(pixmap); - if (cacheable) - QPixmapCache::insert(keyBase + QString::number(size), pixmap); - } - } + return QIcon(); - return retIcon; + Q_Q(const QFileIconProvider); + return QIcon(new QFileIconEngine(q, fi)); } - /*! Returns an icon for the file described by \a info. */ |