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892 lines
31 KiB
892 lines
31 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 "xdgiconloader_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/QDir>
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#include <QtCore/QSettings>
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#include <QtGui/QPainter>
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#include <QImageReader>
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#include <QXmlStreamReader>
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#ifdef Q_DEAD_CODE_FROM_QT4_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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Q_GLOBAL_STATIC(XdgIconLoader, 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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const QString theme = themeHint.toString();
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if (theme != QLatin1String("hicolor"))
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return theme;
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}
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}
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return QString();
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}
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#ifdef QT_NO_LIBRARY
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static bool gSupportsSvg = false;
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#else
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static bool gSupportsSvg = true;
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#endif //QT_NO_LIBRARY
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void XdgIconLoader::setFollowColorScheme(bool enable)
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{
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if (m_followColorScheme != enable)
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{
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QIconLoader::instance()->invalidateKey();
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m_followColorScheme = enable;
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}
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}
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XdgIconLoader *XdgIconLoader::instance()
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{
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QIconLoader::instance()->ensureInitialized();
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return iconLoaderInstance();
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}
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/*!
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\class QIconCacheGtkReader
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\internal
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Helper class that reads and looks up into the icon-theme.cache generated with
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gtk-update-icon-cache. If at any point we detect a corruption in the file
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(because the offsets point at wrong locations for example), the reader
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is marked as invalid.
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*/
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class QIconCacheGtkReader
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{
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public:
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explicit QIconCacheGtkReader(const QString &themeDir);
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QVector<const char *> lookup(const QStringRef &);
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bool isValid() const { return m_isValid; }
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private:
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QFile m_file;
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const unsigned char *m_data;
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quint64 m_size;
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bool m_isValid;
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quint16 read16(uint offset)
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{
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if (offset > m_size - 2 || (offset & 0x1)) {
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m_isValid = false;
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return 0;
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}
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return m_data[offset+1] | m_data[offset] << 8;
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}
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quint32 read32(uint offset)
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{
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if (offset > m_size - 4 || (offset & 0x3)) {
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m_isValid = false;
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return 0;
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}
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return m_data[offset+3] | m_data[offset+2] << 8
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| m_data[offset+1] << 16 | m_data[offset] << 24;
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}
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};
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QIconCacheGtkReader::QIconCacheGtkReader(const QString &dirName)
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: m_isValid(false)
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{
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QFileInfo info(dirName + QLatin1String("/icon-theme.cache"));
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if (!info.exists() || info.lastModified() < QFileInfo(dirName).lastModified())
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return;
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m_file.setFileName(info.absoluteFilePath());
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if (!m_file.open(QFile::ReadOnly))
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return;
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m_size = m_file.size();
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m_data = m_file.map(0, m_size);
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if (!m_data)
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return;
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if (read16(0) != 1) // VERSION_MAJOR
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return;
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m_isValid = true;
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// Check that all the directories are older than the cache
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auto lastModified = info.lastModified();
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quint32 dirListOffset = read32(8);
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quint32 dirListLen = read32(dirListOffset);
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for (uint i = 0; i < dirListLen; ++i) {
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quint32 offset = read32(dirListOffset + 4 + 4 * i);
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if (!m_isValid || offset >= m_size || lastModified < QFileInfo(dirName + QLatin1Char('/')
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+ QString::fromUtf8(reinterpret_cast<const char*>(m_data + offset))).lastModified()) {
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m_isValid = false;
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return;
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}
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}
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}
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static quint32 icon_name_hash(const char *p)
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{
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quint32 h = static_cast<signed char>(*p);
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for (p += 1; *p != '\0'; p++)
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h = (h << 5) - h + *p;
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return h;
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}
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/*! \internal
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lookup the icon name and return the list of subdirectories in which an icon
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with this name is present. The char* are pointers to the mapped data.
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For example, this would return { "32x32/apps", "24x24/apps" , ... }
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*/
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QVector<const char *> QIconCacheGtkReader::lookup(const QStringRef &name)
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{
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QVector<const char *> ret;
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if (!isValid())
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return ret;
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QByteArray nameUtf8 = name.toUtf8();
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quint32 hash = icon_name_hash(nameUtf8.data());
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quint32 hashOffset = read32(4);
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quint32 hashBucketCount = read32(hashOffset);
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if (!isValid() || hashBucketCount == 0) {
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m_isValid = false;
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return ret;
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}
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quint32 bucketIndex = hash % hashBucketCount;
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quint32 bucketOffset = read32(hashOffset + 4 + bucketIndex * 4);
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while (bucketOffset > 0 && bucketOffset <= m_size - 12) {
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quint32 nameOff = read32(bucketOffset + 4);
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if (nameOff < m_size && strcmp(reinterpret_cast<const char*>(m_data + nameOff), nameUtf8.constData()) == 0) {
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quint32 dirListOffset = read32(8);
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quint32 dirListLen = read32(dirListOffset);
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quint32 listOffset = read32(bucketOffset+8);
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quint32 listLen = read32(listOffset);
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if (!m_isValid || listOffset + 4 + 8 * listLen > m_size) {
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m_isValid = false;
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return ret;
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}
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ret.reserve(listLen);
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for (uint j = 0; j < listLen && m_isValid; ++j) {
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quint32 dirIndex = read16(listOffset + 4 + 8 * j);
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quint32 o = read32(dirListOffset + 4 + dirIndex*4);
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if (!m_isValid || dirIndex >= dirListLen || o >= m_size) {
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m_isValid = false;
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return ret;
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}
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ret.append(reinterpret_cast<const char*>(m_data) + o);
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}
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return ret;
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}
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bucketOffset = read32(bucketOffset);
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}
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return ret;
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}
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XdgIconTheme::XdgIconTheme(const QString &themeName)
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: m_valid(false)
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, m_followsColorScheme(false)
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{
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QFile themeIndex;
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const 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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QFileInfo themeDirInfo(themeDir);
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if (themeDirInfo.isDir()) {
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m_contentDirs << themeDir;
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m_gtkCaches << QSharedPointer<QIconCacheGtkReader>::create(themeDir);
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}
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if (!m_valid) {
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themeIndex.setFileName(themeDir + QLatin1String("/index.theme"));
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if (themeIndex.exists())
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m_valid = true;
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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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m_followsColorScheme = indexReader.value(QStringLiteral("Icon Theme/FollowsColorScheme"), false).toBool();
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const QStringList keys = indexReader.allKeys();
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for (auto const &key : keys) {
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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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m_parents.removeAll(QLatin1String("hicolor"));
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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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}
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#endif //QT_NO_SETTINGS
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}
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/* WARNING:
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*
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* https://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html
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*
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* <cite>
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* The dash “-” character is used to separate levels of specificity in icon
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* names, for all contexts other than MimeTypes. For instance, we use
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* “input-mouse” as the generic item for all mouse devices, and we use
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* “input-mouse-usb” for a USB mouse device. However, if the more specific
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* item does not exist in the current theme, and does exist in a parent
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* theme, the generic icon from the current theme is preferred, in order
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* to keep consistent style.
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* </cite>
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*
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* But we believe, that using the more specific icon (even from parents)
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* is better for user experience. So we are violating the standard
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* intentionally.
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*
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* Ref.
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* https://github.com/lxde/lxqt/issues/1252
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* https://github.com/lxde/libqtxdg/pull/116
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*/
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QThemeIconInfo XdgIconLoader::findIconHelper(const QString &themeName,
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const QString &iconName,
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QStringList &visited,
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bool dashFallback) const
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{
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QThemeIconInfo info;
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Q_ASSERT(!themeName.isEmpty());
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// Used to protect against potential recursions
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visited << themeName;
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XdgIconTheme &theme = themeList[themeName];
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if (!theme.isValid()) {
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theme = XdgIconTheme(themeName);
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if (!theme.isValid()) {
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const QString fallback = fallbackTheme();
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if (!fallback.isEmpty())
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theme = XdgIconTheme(fallback);
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}
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}
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const QStringList contentDirs = theme.contentDirs();
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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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QStringRef 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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QVector<QIconDirInfo> subDirs = theme.keyList();
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// Try to reduce the amount of subDirs by looking in the GTK+ cache in order to save
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// a massive amount of file stat (especially if the icon is not there)
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auto cache = theme.m_gtkCaches.at(i);
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if (cache->isValid()) {
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const auto result = cache->lookup(iconNameFallback);
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if (cache->isValid()) {
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const QVector<QIconDirInfo> subDirsCopy = subDirs;
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subDirs.clear();
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subDirs.reserve(result.count());
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for (const char *s : result) {
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QString path = QString::fromUtf8(s);
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auto it = std::find_if(subDirsCopy.cbegin(), subDirsCopy.cend(),
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[&](const QIconDirInfo &info) {
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return info.path == path; } );
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if (it != subDirsCopy.cend()) {
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subDirs.append(*it);
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}
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}
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}
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}
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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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const QString subDir = contentDir + dirInfo.path + QLatin1Char('/');
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const QString pngPath = subDir + pngIconName;
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if (QFile::exists(pngPath)) {
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PixmapEntry *iconEntry = new PixmapEntry;
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iconEntry->dir = dirInfo;
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iconEntry->filename = pngPath;
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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 {
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const QString svgPath = subDir + svgIconName;
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if (gSupportsSvg && QFile::exists(svgPath)) {
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ScalableEntry *iconEntry = (followColorScheme() && theme.followsColorScheme()) ? new ScalableFollowsColorEntry : new ScalableEntry;
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iconEntry->dir = dirInfo;
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iconEntry->filename = svgPath;
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info.entries.append(iconEntry);
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}
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}
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const QString xpmPath = subDir + xpmIconName;
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if (QFile::exists(xpmPath)) {
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PixmapEntry *iconEntry = new PixmapEntry;
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iconEntry->dir = dirInfo;
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iconEntry->filename = xpmPath;
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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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}
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if (!info.entries.isEmpty())
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info.iconName = iconNameFallback.toString();
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break;
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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 (dashFallback && info.entries.isEmpty()) {
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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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iconNameFallback.truncate(indexOfDash);
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QStringList _visited;
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info = findIconHelper(themeName, iconNameFallback.toString(), _visited, true);
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}
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}
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return info;
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}
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QThemeIconInfo XdgIconLoader::unthemedFallback(const QString &iconName, const QStringList &searchPaths) const
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{
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QThemeIconInfo info;
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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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for (const auto &contentDir : searchPaths) {
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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 (gSupportsSvg &&
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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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} 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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}
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}
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return info;
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}
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QThemeIconInfo XdgIconLoader::loadIcon(const QString &name) const
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{
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const QString theme_name = QIconLoader::instance()->themeName();
|
|
if (!theme_name.isEmpty()) {
|
|
QStringList visited;
|
|
auto info = findIconHelper(theme_name, name, visited, true);
|
|
if (info.entries.isEmpty()) {
|
|
const auto hicolorInfo = findIconHelper(QLatin1String("hicolor"), name, visited, true);
|
|
if (hicolorInfo.entries.isEmpty()) {
|
|
const auto unthemedInfo = unthemedFallback(name, QIcon::themeSearchPaths());
|
|
if (unthemedInfo.entries.isEmpty()) {
|
|
/* Freedesktop standard says to look in /usr/share/pixmaps last */
|
|
const QStringList pixmapPath = (QStringList() << QString::fromLatin1("/usr/share/pixmaps"));
|
|
const auto pixmapInfo = unthemedFallback(name, pixmapPath);
|
|
if (pixmapInfo.entries.isEmpty()) {
|
|
return QThemeIconInfo();
|
|
} else {
|
|
return pixmapInfo;
|
|
}
|
|
} else {
|
|
return unthemedInfo;
|
|
}
|
|
} else {
|
|
return hicolorInfo;
|
|
}
|
|
} else {
|
|
return info;
|
|
}
|
|
}
|
|
|
|
return QThemeIconInfo();
|
|
}
|
|
|
|
|
|
// -------- Icon Loader Engine -------- //
|
|
|
|
|
|
XdgIconLoaderEngine::XdgIconLoaderEngine(const QString& iconName)
|
|
: m_iconName(iconName), m_key(0)
|
|
{
|
|
}
|
|
|
|
XdgIconLoaderEngine::~XdgIconLoaderEngine()
|
|
{
|
|
qDeleteAll(m_info.entries);
|
|
}
|
|
|
|
XdgIconLoaderEngine::XdgIconLoaderEngine(const XdgIconLoaderEngine &other)
|
|
: QIconEngine(other),
|
|
m_iconName(other.m_iconName),
|
|
m_key(0)
|
|
{
|
|
}
|
|
|
|
QIconEngine *XdgIconLoaderEngine::clone() const
|
|
{
|
|
return new XdgIconLoaderEngine(*this);
|
|
}
|
|
|
|
bool XdgIconLoaderEngine::read(QDataStream &in) {
|
|
in >> m_iconName;
|
|
return true;
|
|
}
|
|
|
|
bool XdgIconLoaderEngine::write(QDataStream &out) const
|
|
{
|
|
out << m_iconName;
|
|
return true;
|
|
}
|
|
|
|
bool XdgIconLoaderEngine::hasIcon() const
|
|
{
|
|
return !(m_info.entries.isEmpty());
|
|
}
|
|
|
|
// Lazily load the icon
|
|
void XdgIconLoaderEngine::ensureLoaded()
|
|
{
|
|
if (!(QIconLoader::instance()->themeKey() == m_key)) {
|
|
qDeleteAll(m_info.entries);
|
|
m_info.entries.clear();
|
|
m_info.iconName.clear();
|
|
|
|
Q_ASSERT(m_info.entries.size() == 0);
|
|
m_info = XdgIconLoader::instance()->loadIcon(m_iconName);
|
|
m_key = QIconLoader::instance()->themeKey();
|
|
}
|
|
}
|
|
|
|
void XdgIconLoaderEngine::paint(QPainter *painter, const QRect &rect,
|
|
QIcon::Mode mode, QIcon::State state)
|
|
{
|
|
QSize pixmapSize = rect.size();
|
|
#if defined(Q_DEAD_CODE_FROM_QT4_MAC)
|
|
pixmapSize *= qt_mac_get_scalefactor();
|
|
#endif
|
|
painter->drawPixmap(rect, pixmap(pixmapSize, mode, state));
|
|
}
|
|
|
|
/*
|
|
* This algorithm is defined by the freedesktop spec:
|
|
* http://standards.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html
|
|
*/
|
|
static bool directoryMatchesSize(const QIconDirInfo &dir, int iconsize)
|
|
{
|
|
if (dir.type == QIconDirInfo::Fixed) {
|
|
return dir.size == iconsize;
|
|
|
|
} else if (dir.type == QIconDirInfo::Scalable) {
|
|
return iconsize <= dir.maxSize &&
|
|
iconsize >= dir.minSize;
|
|
|
|
} else if (dir.type == QIconDirInfo::Threshold) {
|
|
return iconsize >= dir.size - dir.threshold &&
|
|
iconsize <= dir.size + dir.threshold;
|
|
}
|
|
|
|
Q_ASSERT(1); // Not a valid value
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* This algorithm is defined by the freedesktop spec:
|
|
* http://standards.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html
|
|
*/
|
|
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 *XdgIconLoaderEngine::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 XdgIconLoaderEngine::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 || dynamic_cast<ScalableEntry *>(entry))
|
|
return size;
|
|
else {
|
|
int dir_size = dir.size;
|
|
//Note: fallback for directories that don't have its content size defined
|
|
// -> get the actual size based on the image if possible
|
|
PixmapEntry * pix_e;
|
|
if (0 == dir_size && nullptr != (pix_e = dynamic_cast<PixmapEntry *>(entry)))
|
|
{
|
|
QSize pix_size = pix_e->basePixmap.size();
|
|
dir_size = qMin(pix_size.width(), pix_size.height());
|
|
}
|
|
int result = qMin(dir_size, qMin(size.width(), size.height()));
|
|
return QSize(result, result);
|
|
}
|
|
}
|
|
return {0, 0};
|
|
}
|
|
|
|
// XXX: duplicated from qiconloader.cpp, because this symbol isn't exported :(
|
|
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;
|
|
}
|
|
|
|
// XXX: duplicated from qiconloader.cpp, because this symbol isn't exported :(
|
|
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);
|
|
}
|
|
|
|
|
|
// XXX: duplicated from qicon.cpp, because the symbol qt_iconEngineFactoryLoader isn't exported :(
|
|
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, qt_iconEngineFactoryLoader,
|
|
(QIconEngineFactoryInterface_iid, QLatin1String("/iconengines"), Qt::CaseInsensitive))
|
|
//extern QFactoryLoader *qt_iconEngineFactoryLoader(); // qicon.cpp
|
|
|
|
QPixmap ScalableFollowsColorEntry::pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state)
|
|
{
|
|
QIcon & icon = QIcon::Selected == mode ? svgSelectedIcon : svgIcon;
|
|
if (icon.isNull())
|
|
{
|
|
// The following lines are adapted and updated from KDE's "kiconloader.cpp" ->
|
|
// KIconLoaderPrivate::processSvg() and KIconLoaderPrivate::createIconImage().
|
|
// They read the SVG color scheme of SVG icons and give images based on the icon mode.
|
|
QByteArray processedContents;
|
|
QFile device{filename};;
|
|
if (device.open(QIODevice::ReadOnly))
|
|
{
|
|
const QPalette pal = qApp->palette();
|
|
QString styleSheet = QStringLiteral(".ColorScheme-Text{color:%1;}")
|
|
.arg(mode == QIcon::Selected
|
|
? pal.highlightedText().color().name()
|
|
: pal.windowText().color().name());
|
|
QXmlStreamReader xmlReader(&device);
|
|
QXmlStreamWriter writer(&processedContents);
|
|
while (!xmlReader.atEnd())
|
|
{
|
|
if (xmlReader.readNext() == QXmlStreamReader::StartElement
|
|
&& xmlReader.qualifiedName() == QLatin1String("style")
|
|
&& xmlReader.attributes().value(QLatin1String("id")) == QLatin1String("current-color-scheme"))
|
|
{
|
|
writer.writeStartElement(QLatin1String("style"));
|
|
writer.writeAttributes(xmlReader.attributes());
|
|
writer.writeCharacters(styleSheet);
|
|
writer.writeEndElement();
|
|
while (xmlReader.tokenType() != QXmlStreamReader::EndElement)
|
|
xmlReader.readNext();
|
|
}
|
|
else if (xmlReader.tokenType() != QXmlStreamReader::Invalid)
|
|
writer.writeCurrentToken(xmlReader);
|
|
}
|
|
}
|
|
// use the QSvgIconEngine
|
|
// - assemble the content as it is done by the QSvgIconEngine::write() (operator <<)
|
|
// - create the QIcon with QSvgIconEngine initialized from the content
|
|
const int index = qt_iconEngineFactoryLoader()->indexOf(QStringLiteral("svg"));
|
|
if (index != -1)
|
|
{
|
|
if (QIconEnginePlugin * factory = qobject_cast<QIconEnginePlugin*>(qt_iconEngineFactoryLoader()->instance(index)))
|
|
{
|
|
if (QIconEngine * engine = factory->create())
|
|
{
|
|
QByteArray engine_arr;
|
|
QDataStream str{&engine_arr, QIODevice::WriteOnly};
|
|
str.setVersion(QDataStream::Qt_4_4);
|
|
QHash<int, QString> filenames;
|
|
filenames[0] = filename;
|
|
QHash<int, QByteArray> svg_buffers;
|
|
svg_buffers[0] = processedContents;
|
|
str << filenames << static_cast<int>(0)/*isCompressed*/ << svg_buffers << static_cast<int>(0)/*hasAddedPimaps*/;
|
|
|
|
QDataStream str_read{&engine_arr, QIODevice::ReadOnly};
|
|
str_read.setVersion(QDataStream::Qt_4_4);
|
|
|
|
engine->read(str_read);
|
|
icon = QIcon{engine};
|
|
}
|
|
}
|
|
}
|
|
|
|
// load the icon directly from file, if still null
|
|
if (icon.isNull())
|
|
icon = QIcon(filename);
|
|
}
|
|
|
|
return icon.pixmap(size, mode, state);
|
|
}
|
|
|
|
QPixmap XdgIconLoaderEngine::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 XdgIconLoaderEngine::key() const
|
|
{
|
|
return QLatin1String("XdgIconLoaderEngine");
|
|
}
|
|
|
|
void XdgIconLoaderEngine::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_info.iconName;
|
|
}
|
|
break;
|
|
#if QT_VERSION >= QT_VERSION_CHECK(5, 7, 0)
|
|
case QIconEngine::IsNullHook:
|
|
{
|
|
*reinterpret_cast<bool*>(data) = m_info.entries.isEmpty();
|
|
}
|
|
break;
|
|
#endif
|
|
default:
|
|
QIconEngine::virtual_hook(id, data);
|
|
}
|
|
}
|
|
|
|
|
|
//QT_END_NAMESPACE
|
|
|
|
#endif //QT_NO_ICON
|