/**************************************************************************** | |
** | |
** 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 Qt Designer of the Qt Toolkit. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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. | |
** | |
** GNU General Public License Usage | |
** Alternatively, this file may be used under the terms of the GNU General | |
** Public License version 3.0 as published by the Free Software Foundation | |
** and appearing in the file LICENSE.GPL included in the packaging of this | |
** file. Please review the following information to ensure the GNU General | |
** Public License version 3.0 requirements will be met: | |
** http://www.gnu.org/copyleft/gpl.html. | |
** | |
** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
** | |
** | |
** | |
** | |
** | |
** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
#include "dialoggui_p.h" | |
#include <QtGui/QFileIconProvider> | |
#include <QtGui/QIcon> | |
#include <QtGui/QImage> | |
#include <QtGui/QImageReader> | |
#include <QtGui/QPixmap> | |
#include <QtCore/QFileInfo> | |
#include <QtCore/QFile> | |
#include <QtCore/QSet> | |
// QFileDialog on X11 does not provide an image preview. Display icons. | |
#ifdef Q_WS_X11 | |
# define IMAGE_PREVIEW | |
#endif | |
QT_BEGIN_NAMESPACE | |
namespace qdesigner_internal { | |
// Icon provider that reads out the known image formats | |
class IconProvider : public QFileIconProvider { | |
Q_DISABLE_COPY(IconProvider) | |
public: | |
IconProvider(); | |
virtual QIcon icon (const QFileInfo &info) const; | |
inline bool loadCheck(const QFileInfo &info) const; | |
QImage loadImage(const QString &fileName) const; | |
private: | |
QSet<QString> m_imageFormats; | |
}; | |
IconProvider::IconProvider() | |
{ | |
// Determine a list of readable extensions (upper and lower case) | |
typedef QList<QByteArray> ByteArrayList; | |
const ByteArrayList fmts = QImageReader::supportedImageFormats(); | |
const ByteArrayList::const_iterator cend = fmts.constEnd(); | |
for (ByteArrayList::const_iterator it = fmts.constBegin(); it != cend; ++it) { | |
const QString suffix = QString::fromUtf8(it->constData()); | |
m_imageFormats.insert(suffix.toLower()); | |
m_imageFormats.insert(suffix.toUpper()); | |
} | |
} | |
// Check by extension and type if this appears to be a loadable image | |
bool IconProvider::loadCheck(const QFileInfo &info) const | |
{ | |
if (info.isFile() && info.isReadable()) { | |
const QString suffix = info.suffix(); | |
if (!suffix.isEmpty()) | |
return m_imageFormats.contains(suffix); | |
} | |
return false; | |
} | |
QImage IconProvider::loadImage(const QString &fileName) const | |
{ | |
QFile file(fileName); | |
if (file.open(QIODevice::ReadOnly)) { | |
QImageReader imgReader(&file); | |
if (imgReader.canRead()) { | |
QImage image; | |
if (imgReader.read(&image)) | |
return image; | |
} | |
} | |
return QImage(); | |
} | |
QIcon IconProvider::icon (const QFileInfo &info) const | |
{ | |
// Don't get stuck on large images. | |
const qint64 maxSize = 131072; | |
if (loadCheck(info) && info.size() < maxSize) { | |
const QImage image = loadImage(info.absoluteFilePath()); | |
if (!image.isNull()) | |
return QIcon(QPixmap::fromImage(image, Qt::ThresholdDither|Qt::AutoColor)); | |
} | |
return QFileIconProvider::icon(info); | |
} | |
// ---------------- DialogGui | |
DialogGui::DialogGui() : | |
m_iconProvider(0) | |
{ | |
} | |
DialogGui::~DialogGui() | |
{ | |
delete m_iconProvider; | |
} | |
QFileIconProvider *DialogGui::ensureIconProvider() | |
{ | |
if (!m_iconProvider) | |
m_iconProvider = new IconProvider; | |
return m_iconProvider; | |
} | |
QMessageBox::StandardButton | |
DialogGui::message(QWidget *parent, Message /*context*/, QMessageBox::Icon icon, | |
const QString &title, const QString &text, QMessageBox::StandardButtons buttons, | |
QMessageBox::StandardButton defaultButton) | |
{ | |
QMessageBox::StandardButton rc = QMessageBox::NoButton; | |
switch (icon) { | |
case QMessageBox::Information: | |
rc = QMessageBox::information(parent, title, text, buttons, defaultButton); | |
break; | |
case QMessageBox::Warning: | |
rc = QMessageBox::warning(parent, title, text, buttons, defaultButton); | |
break; | |
case QMessageBox::Critical: | |
rc = QMessageBox::critical(parent, title, text, buttons, defaultButton); | |
break; | |
case QMessageBox::Question: | |
rc = QMessageBox::question(parent, title, text, buttons, defaultButton); | |
break; | |
case QMessageBox::NoIcon: | |
break; | |
} | |
return rc; | |
} | |
QMessageBox::StandardButton | |
DialogGui::message(QWidget *parent, Message /*context*/, QMessageBox::Icon icon, | |
const QString &title, const QString &text, const QString &informativeText, | |
QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton) | |
{ | |
QMessageBox msgBox(icon, title, text, buttons, parent); | |
msgBox.setDefaultButton(defaultButton); | |
msgBox.setInformativeText(informativeText); | |
return static_cast<QMessageBox::StandardButton>(msgBox.exec()); | |
} | |
QMessageBox::StandardButton | |
DialogGui::message(QWidget *parent, Message /*context*/, QMessageBox::Icon icon, | |
const QString &title, const QString &text, const QString &informativeText, const QString &detailedText, | |
QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton) | |
{ | |
QMessageBox msgBox(icon, title, text, buttons, parent); | |
msgBox.setDefaultButton(defaultButton); | |
msgBox.setInformativeText(informativeText); | |
msgBox.setDetailedText(detailedText); | |
return static_cast<QMessageBox::StandardButton>(msgBox.exec()); | |
} | |
QString DialogGui::getExistingDirectory(QWidget *parent, const QString &caption, const QString &dir, QFileDialog::Options options) | |
{ | |
return QFileDialog::getExistingDirectory(parent, caption, dir, options); | |
} | |
QString DialogGui::getOpenFileName(QWidget *parent, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options) | |
{ | |
return QFileDialog::getOpenFileName(parent, caption, dir, filter, selectedFilter, options); | |
} | |
QStringList DialogGui::getOpenFileNames(QWidget *parent, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options) | |
{ | |
return QFileDialog::getOpenFileNames(parent, caption, dir, filter, selectedFilter, options); | |
} | |
QString DialogGui::getSaveFileName(QWidget *parent, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options) | |
{ | |
return QFileDialog::getSaveFileName(parent, caption, dir, filter, selectedFilter, options); | |
} | |
void DialogGui::initializeImageFileDialog(QFileDialog &fileDialog, QFileDialog::Options options, QFileDialog::FileMode fm) | |
{ | |
fileDialog.setConfirmOverwrite( !(options & QFileDialog::DontConfirmOverwrite) ); | |
fileDialog.setResolveSymlinks( !(options & QFileDialog::DontResolveSymlinks) ); | |
fileDialog.setIconProvider(ensureIconProvider()); | |
fileDialog.setFileMode(fm); | |
} | |
QString DialogGui::getOpenImageFileName(QWidget *parent, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options ) | |
{ | |
#ifdef IMAGE_PREVIEW | |
QFileDialog fileDialog(parent, caption, dir, filter); | |
initializeImageFileDialog(fileDialog, options, QFileDialog::ExistingFile); | |
if (fileDialog.exec() != QDialog::Accepted) | |
return QString(); | |
const QStringList selectedFiles = fileDialog.selectedFiles(); | |
if (selectedFiles.empty()) | |
return QString(); | |
if (selectedFilter) | |
*selectedFilter = fileDialog.selectedFilter(); | |
return selectedFiles.front(); | |
#else | |
return getOpenFileName(parent, caption, dir, filter, selectedFilter, options); | |
#endif | |
} | |
QStringList DialogGui::getOpenImageFileNames(QWidget *parent, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options ) | |
{ | |
#ifdef IMAGE_PREVIEW | |
QFileDialog fileDialog(parent, caption, dir, filter); | |
initializeImageFileDialog(fileDialog, options, QFileDialog::ExistingFiles); | |
if (fileDialog.exec() != QDialog::Accepted) | |
return QStringList(); | |
const QStringList selectedFiles = fileDialog.selectedFiles(); | |
if (!selectedFiles.empty() && selectedFilter) | |
*selectedFilter = fileDialog.selectedFilter(); | |
return selectedFiles; | |
#else | |
return getOpenFileNames(parent, caption, dir, filter, selectedFilter, options); | |
#endif | |
} | |
} | |
QT_END_NAMESPACE |