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+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of Qt Designer.  This header
+// file may change from version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef PREVIEWMANAGER_H
+#define PREVIEWMANAGER_H
+
+#include "shared_global_p.h"
+
+#include <QtCore/QObject>
+#include <QtCore/QString>
+#include <QtCore/QSharedDataPointer>
+
+QT_BEGIN_NAMESPACE
+
+class QDesignerFormWindowInterface;
+class QWidget;
+class QPixmap;
+class QAction;
+class QActionGroup;
+class QMenu;
+class QWidget;
+class QDesignerSettingsInterface;
+
+namespace qdesigner_internal {
+
+// ----------- PreviewConfiguration
+
+class PreviewConfigurationData;
+
+class QDESIGNER_SHARED_EXPORT PreviewConfiguration {
+public:
+    PreviewConfiguration();
+    explicit PreviewConfiguration(const QString &style,
+                                  const QString &applicationStyleSheet = QString(),
+                                  const QString &deviceSkin = QString());
+
+    PreviewConfiguration(const PreviewConfiguration&);
+    PreviewConfiguration& operator=(const PreviewConfiguration&);
+    ~PreviewConfiguration();
+
+    QString style() const;
+    void setStyle(const QString &);
+
+    // Style sheet to prepend (to simulate the effect od QApplication::setSyleSheet()).
+    QString applicationStyleSheet() const;
+    void setApplicationStyleSheet(const QString &);
+
+    QString deviceSkin() const;
+    void setDeviceSkin(const QString &);
+
+    void clear();
+    void toSettings(const QString &prefix, QDesignerSettingsInterface *settings) const;
+    void fromSettings(const QString &prefix, const QDesignerSettingsInterface *settings);
+
+private:
+    QSharedDataPointer<PreviewConfigurationData> m_d;
+};
+
+QDESIGNER_SHARED_EXPORT bool operator<(const PreviewConfiguration &pc1, const PreviewConfiguration &pc2);
+QDESIGNER_SHARED_EXPORT bool operator==(const PreviewConfiguration &pc1, const PreviewConfiguration &pc2);
+QDESIGNER_SHARED_EXPORT bool operator!=(const PreviewConfiguration &pc1, const PreviewConfiguration &pc2);
+
+// ----------- Preview window manager.
+// Maintains a list of preview widgets with their associated form windows and configuration.
+
+class PreviewManagerPrivate;
+
+class QDESIGNER_SHARED_EXPORT PreviewManager : public QObject
+{
+    Q_OBJECT
+public:
+
+    enum PreviewMode {
+        // Modal preview. Do not use on Macs as dialogs would have no close button
+        ApplicationModalPreview,
+        // Non modal previewing of one form in different configurations (closes if form window changes)
+        SingleFormNonModalPreview,
+        // Non modal previewing of several forms in different configurations
+        MultipleFormNonModalPreview };
+
+    explicit PreviewManager(PreviewMode mode, QObject *parent);
+    virtual ~PreviewManager();
+
+    // Show preview. Raise existing preview window if there is one with a matching
+    // configuration, else create a new preview.
+    QWidget *showPreview(const QDesignerFormWindowInterface *, const PreviewConfiguration &pc, int deviceProfileIndex /*=-1*/, QString *errorMessage);
+    // Convenience that creates a preview using a configuration taken from the settings.
+    QWidget *showPreview(const QDesignerFormWindowInterface *, const QString &style, int deviceProfileIndex /*=-1*/, QString *errorMessage);
+    QWidget *showPreview(const QDesignerFormWindowInterface *, const QString &style, QString *errorMessage);
+
+    int previewCount() const;
+
+    // Create a pixmap for printing.
+    QPixmap createPreviewPixmap(const QDesignerFormWindowInterface *fw, const PreviewConfiguration &pc, int deviceProfileIndex /*=-1*/, QString *errorMessage);
+    // Convenience that creates a pixmap using a configuration taken from the settings.
+    QPixmap createPreviewPixmap(const QDesignerFormWindowInterface *fw, const QString &style, int deviceProfileIndex /*=-1*/, QString *errorMessage);
+    QPixmap createPreviewPixmap(const QDesignerFormWindowInterface *fw, const QString &style, QString *errorMessage);
+
+    virtual bool eventFilter(QObject *watched, QEvent *event);
+
+public slots:
+    void closeAllPreviews();
+
+signals:
+    void firstPreviewOpened();
+    void lastPreviewClosed();
+
+private slots:
+    void slotZoomChanged(int);
+
+private:
+
+    virtual Qt::WindowFlags previewWindowFlags(const QWidget *widget) const;
+    virtual QWidget *createDeviceSkinContainer(const QDesignerFormWindowInterface *) const;
+
+    QWidget *raise(const QDesignerFormWindowInterface *, const PreviewConfiguration &pc);
+    QWidget *createPreview(const QDesignerFormWindowInterface *,
+                           const PreviewConfiguration &pc,
+                           int deviceProfileIndex /* = -1 */,
+                           QString *errorMessage,
+                           /*Disabled by default, <0 */
+                           int initialZoom = -1);
+
+    void updatePreviewClosed(QWidget *w);
+
+    PreviewManagerPrivate *d;
+
+    PreviewManager(const PreviewManager &other);
+    PreviewManager &operator =(const PreviewManager &other);
+};
+}
+
+QT_END_NAMESPACE
+
+#endif // PREVIEWMANAGER_H