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701 lines
23 KiB
701 lines
23 KiB
/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QT_NO_ICON
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#include "qiconloader_p.h"
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#include <private/qguiapplication_p.h>
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#include <private/qicon_p.h>
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#include <QtGui/QIconEnginePlugin>
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#include <QtGui/QPixmapCache>
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#include <qpa/qplatformtheme.h>
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#include <QtGui/QIconEngine>
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#include <QtGui/QPalette>
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#include <QtCore/QList>
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#include <QtCore/QHash>
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#include <QtCore/QDir>
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#include <QtCore/QSettings>
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#include <QtGui/QPainter>
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#ifdef Q_WS_MAC
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#include <private/qt_cocoa_helpers_mac_p.h>
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#endif
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#include <private/qhexstring_p.h>
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//QT_BEGIN_NAMESPACE
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namespace QtXdg {
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Q_GLOBAL_STATIC(QIconLoader, iconLoaderInstance)
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/* Theme to use in last resort, if the theme does not have the icon, neither the parents */
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static QString fallbackTheme()
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{
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if (const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme()) {
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const QVariant themeHint = theme->themeHint(QPlatformTheme::SystemIconFallbackThemeName);
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if (themeHint.isValid())
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return themeHint.toString();
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}
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return QString("hicolor");
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}
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QIconLoader::QIconLoader() :
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m_themeKey(1), m_supportsSvg(false), m_initialized(false)
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{
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}
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// We lazily initialize the loader to make static icons
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// work. Though we do not officially support this.
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static inline QString systemThemeName()
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{
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if (const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme()) {
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const QVariant themeHint = theme->themeHint(QPlatformTheme::SystemIconThemeName);
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if (themeHint.isValid())
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return themeHint.toString();
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}
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return QIcon::themeName();
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}
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static inline QStringList systemIconSearchPaths()
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{
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if (const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme()) {
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const QVariant themeHint = theme->themeHint(QPlatformTheme::IconThemeSearchPaths);
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if (themeHint.isValid())
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return themeHint.toStringList();
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}
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return QIcon::themeSearchPaths();
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}
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#ifndef QT_NO_LIBRARY
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//extern QFactoryLoader *qt_iconEngineFactoryLoader(); // qicon.cpp
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#endif
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void QIconLoader::ensureInitialized()
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{
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if (!m_initialized) {
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m_initialized = true;
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Q_ASSERT(qApp);
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m_systemTheme = systemThemeName();
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if (m_systemTheme.isEmpty())
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m_systemTheme = fallbackTheme();
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#ifndef QT_NO_LIBRARY
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// if (qt_iconEngineFactoryLoader()->keyMap().key(QLatin1String("svg"), -1) != -1)
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m_supportsSvg = true;
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#endif //QT_NO_LIBRARY
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}
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}
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QIconLoader *QIconLoader::instance()
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{
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iconLoaderInstance()->ensureInitialized();
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return iconLoaderInstance();
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}
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// Queries the system theme and invalidates existing
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// icons if the theme has changed.
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void QIconLoader::updateSystemTheme()
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{
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// Only change if this is not explicitly set by the user
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if (m_userTheme.isEmpty()) {
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QString theme = systemThemeName();
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if (theme.isEmpty())
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theme = fallbackTheme();
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if (theme != m_systemTheme) {
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m_systemTheme = theme;
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invalidateKey();
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}
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}
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}
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void QIconLoader::setThemeName(const QString &themeName)
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{
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m_userTheme = themeName;
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invalidateKey();
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}
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void QIconLoader::setThemeSearchPath(const QStringList &searchPaths)
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{
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m_iconDirs = searchPaths;
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themeList.clear();
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invalidateKey();
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}
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QStringList QIconLoader::themeSearchPaths() const
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{
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if (m_iconDirs.isEmpty()) {
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m_iconDirs = systemIconSearchPaths();
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// Always add resource directory as search path
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m_iconDirs.append(QLatin1String(":/icons"));
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}
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return m_iconDirs;
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}
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QIconTheme::QIconTheme(const QString &themeName)
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: m_valid(false)
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{
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QFile themeIndex;
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QStringList iconDirs = QIcon::themeSearchPaths();
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for ( int i = 0 ; i < iconDirs.size() ; ++i) {
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QDir iconDir(iconDirs[i]);
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QString themeDir = iconDir.path() + QLatin1Char('/') + themeName;
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themeIndex.setFileName(themeDir + QLatin1String("/index.theme"));
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if (themeIndex.exists()) {
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m_contentDirs << themeDir;
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m_valid = true;
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QStringList themeSearchPaths = QIcon::themeSearchPaths();
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foreach (QString path, themeSearchPaths)
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{
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if (!path.startsWith(':') && QFileInfo(path).isDir())
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m_contentDirs.append(path + QLatin1Char('/') + themeName);
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}
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break;
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}
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}
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#ifndef QT_NO_SETTINGS
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if (themeIndex.exists()) {
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const QSettings indexReader(themeIndex.fileName(), QSettings::IniFormat);
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QStringListIterator keyIterator(indexReader.allKeys());
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while (keyIterator.hasNext()) {
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const QString key = keyIterator.next();
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if (key.endsWith(QLatin1String("/Size"))) {
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// Note the QSettings ini-format does not accept
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// slashes in key names, hence we have to cheat
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if (int size = indexReader.value(key).toInt()) {
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QString directoryKey = key.left(key.size() - 5);
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QIconDirInfo dirInfo(directoryKey);
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dirInfo.size = size;
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QString type = indexReader.value(directoryKey +
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QLatin1String("/Type")
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).toString();
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if (type == QLatin1String("Fixed"))
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dirInfo.type = QIconDirInfo::Fixed;
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else if (type == QLatin1String("Scalable"))
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dirInfo.type = QIconDirInfo::Scalable;
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else
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dirInfo.type = QIconDirInfo::Threshold;
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dirInfo.threshold = indexReader.value(directoryKey +
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QLatin1String("/Threshold"),
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2).toInt();
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dirInfo.minSize = indexReader.value(directoryKey +
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QLatin1String("/MinSize"),
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size).toInt();
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dirInfo.maxSize = indexReader.value(directoryKey +
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QLatin1String("/MaxSize"),
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size).toInt();
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m_keyList.append(dirInfo);
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}
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}
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}
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// Parent themes provide fallbacks for missing icons
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m_parents = indexReader.value(
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QLatin1String("Icon Theme/Inherits")).toStringList();
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m_parents.removeAll(QString());
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// Ensure a default platform fallback for all themes
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if (m_parents.isEmpty()) {
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const QString fallback = fallbackTheme();
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if (!fallback.isEmpty())
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m_parents.append(fallback);
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}
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// Ensure that all themes fall back to hicolor
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if (!m_parents.contains(QLatin1String("hicolor")))
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m_parents.append(QLatin1String("hicolor"));
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}
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#endif //QT_NO_SETTINGS
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}
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QThemeIconInfo QIconLoader::findIconHelper(const QString &themeName,
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const QString &iconName,
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QStringList &visited) const
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{
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QThemeIconInfo info;
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Q_ASSERT(!themeName.isEmpty());
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QPixmap pixmap;
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// Used to protect against potential recursions
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visited << themeName;
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QIconTheme theme = themeList.value(themeName);
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if (!theme.isValid()) {
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theme = QIconTheme(themeName);
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if (!theme.isValid())
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theme = QIconTheme(fallbackTheme());
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themeList.insert(themeName, theme);
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}
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const QStringList contentDirs = theme.contentDirs();
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const QVector<QIconDirInfo> subDirs = theme.keyList();
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const QString svgext(QLatin1String(".svg"));
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const QString pngext(QLatin1String(".png"));
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const QString xpmext(QLatin1String(".xpm"));
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QString iconNameFallback = iconName;
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// Iterate through all icon's fallbacks in current theme
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while (info.entries.isEmpty()) {
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const QString svgIconName = iconNameFallback + svgext;
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const QString pngIconName = iconNameFallback + pngext;
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const QString xpmIconName = iconNameFallback + xpmext;
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// Add all relevant files
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for (int i = 0; i < contentDirs.size(); ++i) {
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QString contentDir = contentDirs.at(i) + QLatin1Char('/');
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for (int j = 0; j < subDirs.size() ; ++j) {
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const QIconDirInfo &dirInfo = subDirs.at(j);
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QString subdir = dirInfo.path;
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QDir currentDir(contentDir + subdir);
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if (currentDir.exists(pngIconName)) {
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PixmapEntry *iconEntry = new PixmapEntry;
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iconEntry->dir = dirInfo;
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iconEntry->filename = currentDir.filePath(pngIconName);
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// Notice we ensure that pixmap entries always come before
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// scalable to preserve search order afterwards
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info.entries.prepend(iconEntry);
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} else if (m_supportsSvg &&
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currentDir.exists(svgIconName)) {
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ScalableEntry *iconEntry = new ScalableEntry;
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iconEntry->dir = dirInfo;
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iconEntry->filename = currentDir.filePath(svgIconName);
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info.entries.append(iconEntry);
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} else if(currentDir.exists(iconName + xpmext)) {
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PixmapEntry *iconEntry = new PixmapEntry;
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iconEntry->dir = dirInfo;
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iconEntry->filename = currentDir.filePath(iconName + xpmext);
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// Notice we ensure that pixmap entries always come before
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// scalable to preserve search order afterwards
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info.entries.append(iconEntry);
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break;
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}
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}
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}
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if (!info.entries.isEmpty()) {
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info.iconName = iconNameFallback;
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break;
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}
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// If it's possible - find next fallback for the icon
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const int indexOfDash = iconNameFallback.lastIndexOf(QLatin1Char('-'));
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if (indexOfDash == -1)
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break;
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iconNameFallback.truncate(indexOfDash);
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}
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if (info.entries.isEmpty()) {
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const QStringList parents = theme.parents();
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// Search recursively through inherited themes
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for (int i = 0 ; i < parents.size() ; ++i) {
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const QString parentTheme = parents.at(i).trimmed();
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if (!visited.contains(parentTheme)) // guard against recursion
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info = findIconHelper(parentTheme, iconName, visited);
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if (!info.entries.isEmpty()) // success
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break;
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}
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}
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if (info.entries.isEmpty()) {
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// Search for unthemed icons in main dir of search paths
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QStringList themeSearchPaths = QIcon::themeSearchPaths();
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foreach (QString contentDir, themeSearchPaths) {
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QDir currentDir(contentDir);
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if (currentDir.exists(iconName + pngext)) {
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PixmapEntry *iconEntry = new PixmapEntry;
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iconEntry->filename = currentDir.filePath(iconName + pngext);
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// Notice we ensure that pixmap entries always come before
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// scalable to preserve search order afterwards
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info.entries.prepend(iconEntry);
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} else if (m_supportsSvg &&
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currentDir.exists(iconName + svgext)) {
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ScalableEntry *iconEntry = new ScalableEntry;
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iconEntry->filename = currentDir.filePath(iconName + svgext);
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info.entries.append(iconEntry);
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break;
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} else if (currentDir.exists(iconName + xpmext)) {
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PixmapEntry *iconEntry = new PixmapEntry;
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iconEntry->filename = currentDir.filePath(iconName + xpmext);
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// Notice we ensure that pixmap entries always come before
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// scalable to preserve search order afterwards
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info.entries.append(iconEntry);
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break;
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}
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}
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}
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/*********************************************************************
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Author: Kaitlin Rupert <kaitlin.rupert@intel.com>
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Date: Aug 12, 2010
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Description: Make it so that the QIcon loader honors /usr/share/pixmaps
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directory. This is a valid directory per the Freedesktop.org
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icon theme specification.
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Bug: https://bugreports.qt.nokia.com/browse/QTBUG-12874
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*********************************************************************/
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#ifdef Q_OS_LINUX
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/* Freedesktop standard says to look in /usr/share/pixmaps last */
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if (info.entries.isEmpty()) {
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const QString pixmaps(QLatin1String("/usr/share/pixmaps"));
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const QDir currentDir(pixmaps);
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const QIconDirInfo dirInfo(pixmaps);
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if (currentDir.exists(iconName + pngext)) {
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PixmapEntry *iconEntry = new PixmapEntry;
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iconEntry->dir = dirInfo;
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iconEntry->filename = currentDir.filePath(iconName + pngext);
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// Notice we ensure that pixmap entries always come before
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// scalable to preserve search order afterwards
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info.entries.prepend(iconEntry);
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} else if (m_supportsSvg &&
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currentDir.exists(iconName + svgext)) {
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ScalableEntry *iconEntry = new ScalableEntry;
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iconEntry->dir = dirInfo;
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iconEntry->filename = currentDir.filePath(iconName + svgext);
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info.entries.append(iconEntry);
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} else if (currentDir.exists(iconName + xpmext)) {
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PixmapEntry *iconEntry = new PixmapEntry;
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iconEntry->dir = dirInfo;
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iconEntry->filename = currentDir.filePath(iconName + xpmext);
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// Notice we ensure that pixmap entries always come before
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// scalable to preserve search order afterwards
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info.entries.append(iconEntry);
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}
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}
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#endif
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return info;
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}
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QThemeIconInfo QIconLoader::loadIcon(const QString &name) const
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{
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if (!themeName().isEmpty()) {
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QStringList visited;
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return findIconHelper(themeName(), name, visited);
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}
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return QThemeIconInfo();
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}
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// -------- Icon Loader Engine -------- //
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QIconLoaderEngineFixed::QIconLoaderEngineFixed(const QString& iconName)
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: m_iconName(iconName), m_key(0)
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{
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}
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QIconLoaderEngineFixed::~QIconLoaderEngineFixed()
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{
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qDeleteAll(m_info.entries);
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}
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QIconLoaderEngineFixed::QIconLoaderEngineFixed(const QIconLoaderEngineFixed &other)
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: QIconEngine(other),
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m_iconName(other.m_iconName),
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m_key(0)
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{
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}
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QIconEngine *QIconLoaderEngineFixed::clone() const
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{
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return new QIconLoaderEngineFixed(*this);
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}
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bool QIconLoaderEngineFixed::read(QDataStream &in) {
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in >> m_iconName;
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return true;
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}
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bool QIconLoaderEngineFixed::write(QDataStream &out) const
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{
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out << m_iconName;
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return true;
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}
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bool QIconLoaderEngineFixed::hasIcon() const
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{
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return !(m_info.entries.isEmpty());
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}
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// Lazily load the icon
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void QIconLoaderEngineFixed::ensureLoaded()
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{
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if (!(QIconLoader::instance()->themeKey() == m_key)) {
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qDeleteAll(m_info.entries);
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m_info.entries.clear();
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m_info.iconName.clear();
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Q_ASSERT(m_info.entries.size() == 0);
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m_info = QIconLoader::instance()->loadIcon(m_iconName);
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m_key = QIconLoader::instance()->themeKey();
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}
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}
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void QIconLoaderEngineFixed::paint(QPainter *painter, const QRect &rect,
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QIcon::Mode mode, QIcon::State state)
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{
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QSize pixmapSize = rect.size();
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#if defined(Q_WS_MAC)
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pixmapSize *= qt_mac_get_scalefactor();
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#endif
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painter->drawPixmap(rect, pixmap(pixmapSize, mode, state));
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}
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/*
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* This algorithm is defined by the freedesktop spec:
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* http://standards.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html
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*/
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static bool directoryMatchesSize(const QIconDirInfo &dir, int iconsize)
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{
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if (dir.type == QIconDirInfo::Fixed) {
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return dir.size == iconsize;
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} else if (dir.type == QIconDirInfo::Scalable) {
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return dir.size <= dir.maxSize &&
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iconsize >= dir.minSize;
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} else if (dir.type == QIconDirInfo::Threshold) {
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return iconsize >= dir.size - dir.threshold &&
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iconsize <= dir.size + dir.threshold;
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}
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Q_ASSERT(1); // Not a valid value
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return false;
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}
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/*
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|
* This algorithm is defined by the freedesktop spec:
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* http://standards.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html
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*/
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|
static int directorySizeDistance(const QIconDirInfo &dir, int iconsize)
|
|
{
|
|
if (dir.type == QIconDirInfo::Fixed) {
|
|
return qAbs(dir.size - iconsize);
|
|
|
|
} else if (dir.type == QIconDirInfo::Scalable) {
|
|
if (iconsize < dir.minSize)
|
|
return dir.minSize - iconsize;
|
|
else if (iconsize > dir.maxSize)
|
|
return iconsize - dir.maxSize;
|
|
else
|
|
return 0;
|
|
|
|
} else if (dir.type == QIconDirInfo::Threshold) {
|
|
if (iconsize < dir.size - dir.threshold)
|
|
return dir.minSize - iconsize;
|
|
else if (iconsize > dir.size + dir.threshold)
|
|
return iconsize - dir.maxSize;
|
|
else return 0;
|
|
}
|
|
|
|
Q_ASSERT(1); // Not a valid value
|
|
return INT_MAX;
|
|
}
|
|
|
|
QIconLoaderEngineEntry *QIconLoaderEngineFixed::entryForSize(const QSize &size)
|
|
{
|
|
int iconsize = qMin(size.width(), size.height());
|
|
|
|
// Note that m_info.entries are sorted so that png-files
|
|
// come first
|
|
|
|
const int numEntries = m_info.entries.size();
|
|
|
|
// Search for exact matches first
|
|
for (int i = 0; i < numEntries; ++i) {
|
|
QIconLoaderEngineEntry *entry = m_info.entries.at(i);
|
|
if (directoryMatchesSize(entry->dir, iconsize)) {
|
|
return entry;
|
|
}
|
|
}
|
|
|
|
// Find the minimum distance icon
|
|
int minimalSize = INT_MAX;
|
|
QIconLoaderEngineEntry *closestMatch = 0;
|
|
for (int i = 0; i < numEntries; ++i) {
|
|
QIconLoaderEngineEntry *entry = m_info.entries.at(i);
|
|
int distance = directorySizeDistance(entry->dir, iconsize);
|
|
if (distance < minimalSize) {
|
|
minimalSize = distance;
|
|
closestMatch = entry;
|
|
}
|
|
}
|
|
return closestMatch;
|
|
}
|
|
|
|
/*
|
|
* Returns the actual icon size. For scalable svg's this is equivalent
|
|
* to the requested size. Otherwise the closest match is returned but
|
|
* we can never return a bigger size than the requested size.
|
|
*
|
|
*/
|
|
QSize QIconLoaderEngineFixed::actualSize(const QSize &size, QIcon::Mode mode,
|
|
QIcon::State state)
|
|
{
|
|
ensureLoaded();
|
|
|
|
QIconLoaderEngineEntry *entry = entryForSize(size);
|
|
if (entry) {
|
|
const QIconDirInfo &dir = entry->dir;
|
|
if (dir.type == QIconDirInfo::Scalable)
|
|
return size;
|
|
else {
|
|
int result = qMin<int>(dir.size, qMin(size.width(), size.height()));
|
|
return QSize(result, result);
|
|
}
|
|
}
|
|
return QIconEngine::actualSize(size, mode, state);
|
|
}
|
|
|
|
QPixmap PixmapEntry::pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state)
|
|
{
|
|
Q_UNUSED(state);
|
|
|
|
// Ensure that basePixmap is lazily initialized before generating the
|
|
// key, otherwise the cache key is not unique
|
|
if (basePixmap.isNull())
|
|
basePixmap.load(filename);
|
|
|
|
QSize actualSize = basePixmap.size();
|
|
if (!actualSize.isNull() && (actualSize.width() > size.width() || actualSize.height() > size.height()))
|
|
actualSize.scale(size, Qt::KeepAspectRatio);
|
|
|
|
QString key = QLatin1String("$qt_theme_")
|
|
% HexString<qint64>(basePixmap.cacheKey())
|
|
% HexString<int>(mode)
|
|
% HexString<qint64>(QGuiApplication::palette().cacheKey())
|
|
% HexString<int>(actualSize.width())
|
|
% HexString<int>(actualSize.height());
|
|
|
|
QPixmap cachedPixmap;
|
|
if (QPixmapCache::find(key, &cachedPixmap)) {
|
|
return cachedPixmap;
|
|
} else {
|
|
if (basePixmap.size() != actualSize)
|
|
cachedPixmap = basePixmap.scaled(actualSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
|
|
else
|
|
cachedPixmap = basePixmap;
|
|
if (QGuiApplication *guiApp = qobject_cast<QGuiApplication *>(qApp))
|
|
cachedPixmap = static_cast<QGuiApplicationPrivate*>(QObjectPrivate::get(guiApp))->applyQIconStyleHelper(mode, cachedPixmap);
|
|
QPixmapCache::insert(key, cachedPixmap);
|
|
}
|
|
return cachedPixmap;
|
|
}
|
|
|
|
QPixmap ScalableEntry::pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state)
|
|
{
|
|
if (svgIcon.isNull())
|
|
svgIcon = QIcon(filename);
|
|
|
|
// Simply reuse svg icon engine
|
|
return svgIcon.pixmap(size, mode, state);
|
|
}
|
|
|
|
QPixmap QIconLoaderEngineFixed::pixmap(const QSize &size, QIcon::Mode mode,
|
|
QIcon::State state)
|
|
{
|
|
ensureLoaded();
|
|
|
|
QIconLoaderEngineEntry *entry = entryForSize(size);
|
|
if (entry)
|
|
return entry->pixmap(size, mode, state);
|
|
|
|
return QPixmap();
|
|
}
|
|
|
|
QString QIconLoaderEngineFixed::key() const
|
|
{
|
|
return QLatin1String("QIconLoaderEngineFixed");
|
|
}
|
|
|
|
void QIconLoaderEngineFixed::virtual_hook(int id, void *data)
|
|
{
|
|
ensureLoaded();
|
|
|
|
switch (id) {
|
|
case QIconEngine::AvailableSizesHook:
|
|
{
|
|
QIconEngine::AvailableSizesArgument &arg
|
|
= *reinterpret_cast<QIconEngine::AvailableSizesArgument*>(data);
|
|
const int N = m_info.entries.size();
|
|
QList<QSize> sizes;
|
|
sizes.reserve(N);
|
|
|
|
// Gets all sizes from the DirectoryInfo entries
|
|
for (int i = 0; i < N; ++i) {
|
|
int size = m_info.entries.at(i)->dir.size;
|
|
sizes.append(QSize(size, size));
|
|
}
|
|
arg.sizes.swap(sizes); // commit
|
|
}
|
|
break;
|
|
case QIconEngine::IconNameHook:
|
|
{
|
|
QString &name = *reinterpret_cast<QString*>(data);
|
|
name = m_iconName;
|
|
}
|
|
break;
|
|
default:
|
|
QIconEngine::virtual_hook(id, data);
|
|
}
|
|
}
|
|
|
|
} // QtXdg
|
|
|
|
//QT_END_NAMESPACE
|
|
|
|
#endif //QT_NO_ICON
|