--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/designer/src/lib/shared/dialoggui.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,265 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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