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Diffstat (limited to 'src/webengine/api/qquickwebenginefaviconprovider.cpp')
| -rw-r--r-- | src/webengine/api/qquickwebenginefaviconprovider.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/webengine/api/qquickwebenginefaviconprovider.cpp b/src/webengine/api/qquickwebenginefaviconprovider.cpp new file mode 100644 index 000000000..fe8436d6c --- /dev/null +++ b/src/webengine/api/qquickwebenginefaviconprovider.cpp @@ -0,0 +1,187 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtWebEngine module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qquickwebenginefaviconprovider_p_p.h" + +#include "favicon_manager.h" +#include "qquickwebengineview_p.h" +#include "qquickwebengineview_p_p.h" +#include "web_contents_adapter.h" + +#include <QtGui/QIcon> +#include <QtGui/QPixmap> + +QT_BEGIN_NAMESPACE + +using QtWebEngineCore::FaviconInfo; +using QtWebEngineCore::FaviconManager; + +static inline unsigned area(const QSize &size) +{ + return size.width() * size.height(); +} + +QString QQuickWebEngineFaviconProvider::identifier() +{ + return QStringLiteral("favicon"); +} + +QUrl QQuickWebEngineFaviconProvider::faviconProviderUrl(const QUrl &url) +{ + if (url.isEmpty()) + return url; + + QUrl providerUrl; + providerUrl.setScheme(QStringLiteral("image")); + providerUrl.setHost(identifier()); + providerUrl.setPath(QStringLiteral("/%1").arg(url.toString())); + + return providerUrl; +} + +QQuickWebEngineFaviconProvider::QQuickWebEngineFaviconProvider() + : QQuickImageProvider(QQuickImageProvider::Pixmap) + , m_latestView(0) +{ +} + +QQuickWebEngineFaviconProvider::~QQuickWebEngineFaviconProvider() +{ + qDeleteAll(m_iconUrlMap); +} + +QUrl QQuickWebEngineFaviconProvider::attach(QQuickWebEngineView *view, const QUrl &iconUrl) +{ + if (iconUrl.isEmpty()) + return QUrl(); + + m_latestView = view; + + if (!m_iconUrlMap.contains(view)) + m_iconUrlMap.insert(view, new QList<QUrl>()); + + QList<QUrl> *iconUrls = m_iconUrlMap[view]; + if (!iconUrls->contains(iconUrl)) + iconUrls->append(iconUrl); + + return faviconProviderUrl(iconUrl); +} + +void QQuickWebEngineFaviconProvider::detach(QQuickWebEngineView *view) +{ + QList<QUrl> *iconUrls = m_iconUrlMap.take(view); + delete iconUrls; +} + +QPixmap QQuickWebEngineFaviconProvider::requestPixmap(const QString &id, QSize *size, const QSize &requestedSize) +{ + Q_UNUSED(size); + Q_UNUSED(requestedSize); + + QUrl iconUrl(id); + QQuickWebEngineView *view = viewForIconUrl(iconUrl); + + if (!view || iconUrl.isEmpty()) + return QPixmap(); + + FaviconManager *faviconManager = view->d_ptr->adapter->faviconManager(); + + Q_ASSERT(faviconManager); + const FaviconInfo &faviconInfo = faviconManager->getFaviconInfo(iconUrl); + const QIcon &icon = faviconManager->getIcon(faviconInfo.candidate ? QUrl() : iconUrl); + + Q_ASSERT(!icon.isNull()); + const QSize &bestSize = faviconInfo.size; + + // If source size is not specified, use the best quality + if (!requestedSize.isValid()) { + if (size) + *size = bestSize; + + return icon.pixmap(bestSize).copy(); + } + + const QSize &fitSize = findFitSize(icon.availableSizes(), requestedSize, bestSize); + const QPixmap &iconPixmap = icon.pixmap(fitSize); + + if (size) + *size = iconPixmap.size(); + + return iconPixmap.scaled(requestedSize, Qt::KeepAspectRatio, Qt::SmoothTransformation).copy(); +} + +QQuickWebEngineView *QQuickWebEngineFaviconProvider::viewForIconUrl(const QUrl &iconUrl) const +{ + // The most common use case is that the requested iconUrl belongs to the + // latest WebEngineView which was raised an iconChanged signal. + if (m_latestView) { + QList<QUrl> *iconUrls = m_iconUrlMap[m_latestView]; + if (iconUrls->contains(iconUrl)) + return m_latestView; + } + + for (auto it = m_iconUrlMap.cbegin(), end = m_iconUrlMap.cend(); it != end; ++it) { + if (it.value()->contains(iconUrl)) + return it.key(); + } + + return 0; +} + +QSize QQuickWebEngineFaviconProvider::findFitSize(const QList<QSize> &availableSizes, + const QSize &requestedSize, + const QSize &bestSize) const +{ + Q_ASSERT(availableSizes.count()); + if (availableSizes.count() == 1 || area(requestedSize) >= area(bestSize)) + return bestSize; + + QSize fitSize = bestSize; + for (const QSize &size : availableSizes) { + if (area(size) == area(requestedSize)) + return size; + + if (area(requestedSize) < area(size) && area(size) < area(fitSize)) + fitSize = size; + } + + return fitSize; +} + +QT_END_NAMESPACE |