diff options
Diffstat (limited to 'src/gui/image/qiconloader.cpp')
| -rw-r--r-- | src/gui/image/qiconloader.cpp | 573 |
1 files changed, 0 insertions, 573 deletions
diff --git a/src/gui/image/qiconloader.cpp b/src/gui/image/qiconloader.cpp deleted file mode 100644 index 19be636e9c..0000000000 --- a/src/gui/image/qiconloader.cpp +++ /dev/null @@ -1,573 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ -#ifndef QT_NO_ICON -#include <private/qiconloader_p.h> - -#include <private/qguiapplication_p.h> -#include <private/qicon_p.h> -#include <private/qguiplatformplugin_p.h> - -#include <QtGui/QIconEnginePlugin> -#include <QtGui/QPixmapCache> -#include <QtGui/QIconEngine> -#include <QtGui/QStyleOption> -#include <QtCore/QList> -#include <QtCore/QHash> -#include <QtCore/QDir> -#include <QtCore/QSettings> -#include <QtGui/QPainter> - -#ifdef Q_WS_MAC -#include <private/qt_cocoa_helpers_mac_p.h> -#endif - -#ifdef Q_WS_X11 -#include <private/qt_x11_p.h> -#endif - -#include <private/qhexstring_p.h> - -QT_BEGIN_NAMESPACE - -Q_GLOBAL_STATIC(QIconLoader, iconLoaderInstance) - -/* Theme to use in last resort, if the theme does not have the icon, neither the parents */ -static QString fallbackTheme() -{ -#ifdef Q_WS_X11 - if (X11->desktopEnvironment == DE_GNOME) { - return QLatin1String("gnome"); - } else if (X11->desktopEnvironment == DE_KDE) { - return X11->desktopVersion >= 4 - ? QString::fromLatin1("oxygen") - : QString::fromLatin1("crystalsvg"); - } else { - return QLatin1String("hicolor"); - } -#endif - return QString(); -} - -QIconLoader::QIconLoader() : - m_themeKey(1), m_supportsSvg(false), m_initialized(false) -{ -} - -// We lazily initialize the loader to make static icons -// work. Though we do not officially support this. -void QIconLoader::ensureInitialized() -{ - if (!m_initialized) { - m_initialized = true; - - Q_ASSERT(qApp); - - m_systemTheme = qt_guiPlatformPlugin()->systemIconThemeName(); - if (m_systemTheme.isEmpty()) - m_systemTheme = fallbackTheme(); -#ifndef QT_NO_LIBRARY - QFactoryLoader iconFactoryLoader(QIconEngineFactoryInterfaceV2_iid, - QLatin1String("/iconengines"), - Qt::CaseInsensitive); - if (iconFactoryLoader.keys().contains(QLatin1String("svg"))) - m_supportsSvg = true; -#endif //QT_NO_LIBRARY - } -} - -QIconLoader *QIconLoader::instance() -{ - return iconLoaderInstance(); -} - -// Queries the system theme and invalidates existing -// icons if the theme has changed. -void QIconLoader::updateSystemTheme() -{ - // Only change if this is not explicitly set by the user - if (m_userTheme.isEmpty()) { - QString theme = qt_guiPlatformPlugin()->systemIconThemeName(); - if (theme.isEmpty()) - theme = fallbackTheme(); - if (theme != m_systemTheme) { - m_systemTheme = theme; - invalidateKey(); - } - } -} - -void QIconLoader::setThemeName(const QString &themeName) -{ - m_userTheme = themeName; - invalidateKey(); -} - -void QIconLoader::setThemeSearchPath(const QStringList &searchPaths) -{ - m_iconDirs = searchPaths; - themeList.clear(); - invalidateKey(); -} - -QStringList QIconLoader::themeSearchPaths() const -{ - if (m_iconDirs.isEmpty()) { - m_iconDirs = qt_guiPlatformPlugin()->iconThemeSearchPaths(); - // Always add resource directory as search path - m_iconDirs.append(QLatin1String(":/icons")); - } - return m_iconDirs; -} - -QIconTheme::QIconTheme(const QString &themeName) - : m_valid(false) -{ - QFile themeIndex; - - QList <QIconDirInfo> keyList; - QStringList iconDirs = QIcon::themeSearchPaths(); - for ( int i = 0 ; i < iconDirs.size() ; ++i) { - QDir iconDir(iconDirs[i]); - QString themeDir = iconDir.path() + QLatin1Char('/') + themeName; - themeIndex.setFileName(themeDir + QLatin1String("/index.theme")); - if (themeIndex.exists()) { - m_contentDir = themeDir; - m_valid = true; - break; - } - } -#ifndef QT_NO_SETTINGS - if (themeIndex.exists()) { - const QSettings indexReader(themeIndex.fileName(), QSettings::IniFormat); - QStringListIterator keyIterator(indexReader.allKeys()); - while (keyIterator.hasNext()) { - - const QString key = keyIterator.next(); - if (key.endsWith(QLatin1String("/Size"))) { - // Note the QSettings ini-format does not accept - // slashes in key names, hence we have to cheat - if (int size = indexReader.value(key).toInt()) { - QString directoryKey = key.left(key.size() - 5); - QIconDirInfo dirInfo(directoryKey); - dirInfo.size = size; - QString type = indexReader.value(directoryKey + - QLatin1String("/Type") - ).toString(); - - if (type == QLatin1String("Fixed")) - dirInfo.type = QIconDirInfo::Fixed; - else if (type == QLatin1String("Scalable")) - dirInfo.type = QIconDirInfo::Scalable; - else - dirInfo.type = QIconDirInfo::Threshold; - - dirInfo.threshold = indexReader.value(directoryKey + - QLatin1String("/Threshold"), - 2).toInt(); - - dirInfo.minSize = indexReader.value(directoryKey + - QLatin1String("/MinSize"), - size).toInt(); - - dirInfo.maxSize = indexReader.value(directoryKey + - QLatin1String("/MaxSize"), - size).toInt(); - m_keyList.append(dirInfo); - } - } - } - - // Parent themes provide fallbacks for missing icons - m_parents = indexReader.value( - QLatin1String("Icon Theme/Inherits")).toStringList(); - - // Ensure a default platform fallback for all themes - if (m_parents.isEmpty()) - m_parents.append(fallbackTheme()); - - // Ensure that all themes fall back to hicolor - if (!m_parents.contains(QLatin1String("hicolor"))) - m_parents.append(QLatin1String("hicolor")); - } -#endif //QT_NO_SETTINGS -} - -QThemeIconEntries QIconLoader::findIconHelper(const QString &themeName, - const QString &iconName, - QStringList &visited) const -{ - QThemeIconEntries entries; - Q_ASSERT(!themeName.isEmpty()); - - QPixmap pixmap; - - // Used to protect against potential recursions - visited << themeName; - - QIconTheme theme = themeList.value(themeName); - if (!theme.isValid()) { - theme = QIconTheme(themeName); - if (!theme.isValid()) - theme = QIconTheme(fallbackTheme()); - - themeList.insert(themeName, theme); - } - - QString contentDir = theme.contentDir() + QLatin1Char('/'); - QList<QIconDirInfo> subDirs = theme.keyList(); - - const QString svgext(QLatin1String(".svg")); - const QString pngext(QLatin1String(".png")); - - // Add all relevant files - for (int i = 0; i < subDirs.size() ; ++i) { - const QIconDirInfo &dirInfo = subDirs.at(i); - QString subdir = dirInfo.path; - QDir currentDir(contentDir + subdir); - if (currentDir.exists(iconName + pngext)) { - PixmapEntry *iconEntry = new PixmapEntry; - iconEntry->dir = dirInfo; - iconEntry->filename = currentDir.filePath(iconName + pngext); - // Notice we ensure that pixmap entries always come before - // scalable to preserve search order afterwards - entries.prepend(iconEntry); - } else if (m_supportsSvg && - currentDir.exists(iconName + svgext)) { - ScalableEntry *iconEntry = new ScalableEntry; - iconEntry->dir = dirInfo; - iconEntry->filename = currentDir.filePath(iconName + svgext); - entries.append(iconEntry); - } - } - - if (entries.isEmpty()) { - const QStringList parents = theme.parents(); - // Search recursively through inherited themes - for (int i = 0 ; i < parents.size() ; ++i) { - - const QString parentTheme = parents.at(i).trimmed(); - - if (!visited.contains(parentTheme)) // guard against recursion - entries = findIconHelper(parentTheme, iconName, visited); - - if (!entries.isEmpty()) // success - break; - } - } - return entries; -} - -QThemeIconEntries QIconLoader::loadIcon(const QString &name) const -{ - if (!themeName().isEmpty()) { - QStringList visited; - return findIconHelper(themeName(), name, visited); - } - - return QThemeIconEntries(); -} - - -// -------- Icon Loader Engine -------- // - - -QIconLoaderEngine::QIconLoaderEngine(const QString& iconName) - : m_iconName(iconName), m_key(0) -{ -} - -QIconLoaderEngine::~QIconLoaderEngine() -{ - while (!m_entries.isEmpty()) - delete m_entries.takeLast(); - Q_ASSERT(m_entries.size() == 0); -} - -QIconLoaderEngine::QIconLoaderEngine(const QIconLoaderEngine &other) - : QIconEngineV2(other), - m_iconName(other.m_iconName), - m_key(0) -{ -} - -QIconEngineV2 *QIconLoaderEngine::clone() const -{ - return new QIconLoaderEngine(*this); -} - -bool QIconLoaderEngine::read(QDataStream &in) { - in >> m_iconName; - return true; -} - -bool QIconLoaderEngine::write(QDataStream &out) const -{ - out << m_iconName; - return true; -} - -bool QIconLoaderEngine::hasIcon() const -{ - return !(m_entries.isEmpty()); -} - -// Lazily load the icon -void QIconLoaderEngine::ensureLoaded() -{ - - iconLoaderInstance()->ensureInitialized(); - - if (!(iconLoaderInstance()->themeKey() == m_key)) { - - while (!m_entries.isEmpty()) - delete m_entries.takeLast(); - - Q_ASSERT(m_entries.size() == 0); - m_entries = iconLoaderInstance()->loadIcon(m_iconName); - m_key = iconLoaderInstance()->themeKey(); - } -} - -void QIconLoaderEngine::paint(QPainter *painter, const QRect &rect, - QIcon::Mode mode, QIcon::State state) -{ - QSize pixmapSize = rect.size(); -#if defined(Q_WS_MAC) - pixmapSize *= qt_mac_get_scalefactor(); -#endif - painter->drawPixmap(rect, pixmap(pixmapSize, mode, state)); -} - -/* - * 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 dir.size <= 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 *QIconLoaderEngine::entryForSize(const QSize &size) -{ - int iconsize = qMin(size.width(), size.height()); - - // Note that m_entries are sorted so that png-files - // come first - - // Search for exact matches first - for (int i = 0; i < m_entries.count(); ++i) { - QIconLoaderEngineEntry *entry = m_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 < m_entries.count(); ++i) { - QIconLoaderEngineEntry *entry = m_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 QIconLoaderEngine::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 QIconEngineV2::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); - -#if 0 // ### Qt5 - int actualSize = qMin(size.width(), size.height()); - QString key = QLatin1Literal("$qt_theme_") - % HexString<qint64>(basePixmap.cacheKey()) - % HexString<int>(mode) - % HexString<qint64>(qApp->palette().cacheKey()) - % HexString<int>(actualSize); - - QPixmap cachedPixmap; - if (QPixmapCache::find(key, &cachedPixmap)) { - return cachedPixmap; - } else { - QStyleOption opt(0); - opt.palette = qApp->palette(); - cachedPixmap = qApp->style()->generatedIconPixmap(mode, basePixmap, &opt); - QPixmapCache::insert(key, cachedPixmap); - } - return cachedPixmap; -#else - return basePixmap; -#endif -} - -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 QIconLoaderEngine::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 QIconLoaderEngine::key() const -{ - return QLatin1String("QIconLoaderEngine"); -} - -void QIconLoaderEngine::virtual_hook(int id, void *data) -{ - ensureLoaded(); - - switch (id) { - case QIconEngineV2::AvailableSizesHook: - { - QIconEngineV2::AvailableSizesArgument &arg - = *reinterpret_cast<QIconEngineV2::AvailableSizesArgument*>(data); - const QList<QIconDirInfo> directoryKey = iconLoaderInstance()->theme().keyList(); - arg.sizes.clear(); - - // Gets all sizes from the DirectoryInfo entries - for (int i = 0 ; i < m_entries.size() ; ++i) { - int size = m_entries.at(i)->dir.size; - arg.sizes.append(QSize(size, size)); - } - } - break; - case QIconEngineV2::IconNameHook: - { - QString &name = *reinterpret_cast<QString*>(data); - name = m_iconName; - } - break; - default: - QIconEngineV2::virtual_hook(id, data); - } -} - -QT_END_NAMESPACE - -#endif //QT_NO_ICON |