diff options
Diffstat (limited to 'src/gui/text/qtextimagehandler.cpp')
| -rw-r--r-- | src/gui/text/qtextimagehandler.cpp | 228 |
1 files changed, 63 insertions, 165 deletions
diff --git a/src/gui/text/qtextimagehandler.cpp b/src/gui/text/qtextimagehandler.cpp index 27112d3000..5c56c30711 100644 --- a/src/gui/text/qtextimagehandler.cpp +++ b/src/gui/text/qtextimagehandler.cpp @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtGui 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #include "qtextimagehandler_p.h" @@ -51,164 +15,96 @@ QT_BEGIN_NAMESPACE -extern QString qt_findAtNxFile(const QString &baseFileName, qreal targetDevicePixelRatio, - qreal *sourceDevicePixelRatio); -static QString resolveFileName(QString fileName, QUrl *url, qreal targetDevicePixelRatio, - qreal *sourceDevicePixelRatio) -{ - // We might use the fileName for loading if url loading fails - // try to make sure it is a valid file path. - // Also, QFile{Info}::exists works only on filepaths (not urls) - - if (url->isValid()) { - if (url->scheme() == QLatin1String("qrc")) { - fileName = fileName.right(fileName.length() - 3); - } - else if (url->scheme() == QLatin1String("file")) { - fileName = url->toLocalFile(); - } - } +using namespace Qt::StringLiterals; - if (targetDevicePixelRatio <= 1.0) - return fileName; - - // try to find a Nx version - return qt_findAtNxFile(fileName, targetDevicePixelRatio, sourceDevicePixelRatio); +static inline QString findAtNxFileOrResource(const QString &baseFileName, + qreal targetDevicePixelRatio, + qreal *sourceDevicePixelRatio) +{ + // qt_findAtNxFile expects a file name that can be tested with QFile::exists. + // so if the format.name() is a file:/ or qrc:/ URL, then we need to strip away the schema. + QString localFile; + const QUrl url(baseFileName); + if (url.isLocalFile()) + localFile = url.toLocalFile(); + else if (baseFileName.startsWith("qrc:/"_L1)) + localFile = baseFileName.sliced(3); + else + localFile = baseFileName; + extern QString qt_findAtNxFile(const QString &baseFileName, qreal targetDevicePixelRatio, + qreal *sourceDevicePixelRatio); + return qt_findAtNxFile(localFile, targetDevicePixelRatio, sourceDevicePixelRatio); } - -static QPixmap getPixmap(QTextDocument *doc, const QTextImageFormat &format, const qreal devicePixelRatio = 1.0) +static inline QUrl fromLocalfileOrResources(QString path) { - QPixmap pm; + if (path.startsWith(":/"_L1)) // auto-detect resources and convert them to url + path = path.prepend("qrc"_L1); + return QUrl(path); +} - QString name = format.name(); - if (name.startsWith(QLatin1String(":/"))) // auto-detect resources and convert them to url - name.prepend(QLatin1String("qrc")); - QUrl url = QUrl(name); +template<typename T> +static T getAs(QTextDocument *doc, const QTextImageFormat &format, const qreal devicePixelRatio = 1.0) +{ qreal sourcePixelRatio = 1.0; - name = resolveFileName(name, &url, devicePixelRatio, &sourcePixelRatio); - const QVariant data = doc->resource(QTextDocument::ImageResource, url); - if (data.userType() == QMetaType::QPixmap || data.userType() == QMetaType::QImage) { - pm = qvariant_cast<QPixmap>(data); - } else if (data.userType() == QMetaType::QByteArray) { - pm.loadFromData(data.toByteArray()); - } - - if (pm.isNull()) { - QImage img; - if (name.isEmpty() || !img.load(name)) - return QPixmap(QLatin1String(":/qt-project.org/styles/commonstyle/images/file-16.png")); + const QString name = findAtNxFileOrResource(format.name(), devicePixelRatio, &sourcePixelRatio); + const QUrl url = fromLocalfileOrResources(name); - pm = QPixmap::fromImage(img); - doc->addResource(QTextDocument::ImageResource, url, pm); + const QVariant data = doc->resource(QTextDocument::ImageResource, url); + T result; + if (data.userType() == QMetaType::QPixmap || data.userType() == QMetaType::QImage) + result = data.value<T>(); + else if (data.metaType() == QMetaType::fromType<QByteArray>()) + result.loadFromData(data.toByteArray()); + + if (result.isNull()) { + if (name.isEmpty() || !result.load(name)) + return T(":/qt-project.org/styles/commonstyle/images/file-16.png"_L1); + doc->addResource(QTextDocument::ImageResource, url, result); } - if (name.contains(QLatin1String("@2x"))) - pm.setDevicePixelRatio(sourcePixelRatio); - - return pm; + if (sourcePixelRatio != 1.0) + result.setDevicePixelRatio(sourcePixelRatio); + return result; } -static QSize getPixmapSize(QTextDocument *doc, const QTextImageFormat &format) +template<typename T> +static QSize getSize(QTextDocument *doc, const QTextImageFormat &format) { - QPixmap pm; - const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth); const int width = qRound(format.width()); const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight); const int height = qRound(format.height()); + T source; QSize size(width, height); if (!hasWidth || !hasHeight) { - pm = getPixmap(doc, format); - const int pmWidth = pm.width() / pm.devicePixelRatio(); - const int pmHeight = pm.height() / pm.devicePixelRatio(); + source = getAs<T>(doc, format); + const QSizeF sourceSize = source.deviceIndependentSize(); if (!hasWidth) { if (!hasHeight) - size.setWidth(pmWidth); + size.setWidth(sourceSize.width()); else - size.setWidth(qRound(height * (pmWidth / (qreal) pmHeight))); + size.setWidth(qRound(height * (sourceSize.width() / qreal(sourceSize.height())))); } if (!hasHeight) { if (!hasWidth) - size.setHeight(pmHeight); + size.setHeight(sourceSize.height()); else - size.setHeight(qRound(width * (pmHeight / (qreal) pmWidth))); + size.setHeight(qRound(width * (sourceSize.height() / qreal(sourceSize.width())))); } } qreal scale = 1.0; QPaintDevice *pdev = doc->documentLayout()->paintDevice(); if (pdev) { - if (pm.isNull()) - pm = getPixmap(doc, format); - if (!pm.isNull()) - scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi()); - } - size *= scale; - - return size; -} - -static QImage getImage(QTextDocument *doc, const QTextImageFormat &format, const qreal devicePixelRatio = 1.0) -{ - QImage image; - - QString name = format.name(); - if (name.startsWith(QLatin1String(":/"))) // auto-detect resources - name.prepend(QLatin1String("qrc")); - QUrl url = QUrl(name); - qreal sourcePixelRatio = 1.0; - name = resolveFileName(name, &url, devicePixelRatio, &sourcePixelRatio); - const QVariant data = doc->resource(QTextDocument::ImageResource, url); - if (data.userType() == QMetaType::QImage) { - image = qvariant_cast<QImage>(data); - } else if (data.userType() == QMetaType::QByteArray) { - image.loadFromData(data.toByteArray()); - } - - if (image.isNull()) { - if (name.isEmpty() || !image.load(name)) - return QImage(QLatin1String(":/qt-project.org/styles/commonstyle/images/file-16.png")); - - doc->addResource(QTextDocument::ImageResource, url, image); - } - - if (sourcePixelRatio != 1.0) - image.setDevicePixelRatio(sourcePixelRatio); - - return image; -} - -static QSize getImageSize(QTextDocument *doc, const QTextImageFormat &format) -{ - QImage image; - - const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth); - const int width = qRound(format.width()); - const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight); - const int height = qRound(format.height()); - - QSize size(width, height); - if (!hasWidth || !hasHeight) { - image = getImage(doc, format); - if (!hasWidth) - size.setWidth(image.width() / image.devicePixelRatio()); - if (!hasHeight) - size.setHeight(image.height() / image.devicePixelRatio()); - } - - qreal scale = 1.0; - QPaintDevice *pdev = doc->documentLayout()->paintDevice(); - if (pdev) { - if (image.isNull()) - image = getImage(doc, format); - if (!image.isNull()) + if (source.isNull()) + source = getAs<T>(doc, format); + if (!source.isNull()) scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi()); } size *= scale; - return size; } @@ -223,15 +119,15 @@ QSizeF QTextImageHandler::intrinsicSize(QTextDocument *doc, int posInDocument, c const QTextImageFormat imageFormat = format.toImageFormat(); if (QCoreApplication::instance()->thread() != QThread::currentThread()) - return getImageSize(doc, imageFormat); - return getPixmapSize(doc, imageFormat); + return getSize<QImage>(doc, imageFormat); + return getSize<QPixmap>(doc, imageFormat); } QImage QTextImageHandler::image(QTextDocument *doc, const QTextImageFormat &imageFormat) { Q_ASSERT(doc != nullptr); - return getImage(doc, imageFormat); + return getAs<QImage>(doc, imageFormat); } void QTextImageHandler::drawObject(QPainter *p, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format) @@ -240,12 +136,14 @@ void QTextImageHandler::drawObject(QPainter *p, const QRectF &rect, QTextDocumen const QTextImageFormat imageFormat = format.toImageFormat(); if (QCoreApplication::instance()->thread() != QThread::currentThread()) { - const QImage image = getImage(doc, imageFormat, p->device()->devicePixelRatio()); + const QImage image = getAs<QImage>(doc, imageFormat, p->device()->devicePixelRatio()); p->drawImage(rect, image, image.rect()); } else { - const QPixmap pixmap = getPixmap(doc, imageFormat, p->device()->devicePixelRatio()); + const QPixmap pixmap = getAs<QPixmap>(doc, imageFormat, p->device()->devicePixelRatio()); p->drawPixmap(rect, pixmap, pixmap.rect()); } } QT_END_NAMESPACE + +#include "moc_qtextimagehandler_p.cpp" |