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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
** rights.  These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QT_NO_PRINTDIALOG

#include <private/qt_mac_p.h>

#include <qhash.h>
#include <qprintdialog.h>
#include <private/qapplication_p.h>
#include <private/qabstractprintdialog_p.h>
#include <private/qprintengine_mac_p.h>

QT_BEGIN_NAMESPACE

class QPrintDialogPrivate : public QAbstractPrintDialogPrivate
{
    Q_DECLARE_PUBLIC(QPrintDialog)

public:
    QPrintDialogPrivate() : ep(0), printPanel(0)
#ifndef QT_MAC_USE_COCOA
       ,upp(0)
#endif
       {}
#ifndef QT_MAC_USE_COCOA
    ~QPrintDialogPrivate() {
        if (upp) {
            DisposePMSheetDoneUPP(upp);
            upp = 0;
        }
        QHash<PMPrintSession, QPrintDialogPrivate *>::iterator it = sheetCallbackMap.begin();
        while (it != sheetCallbackMap.end()) {
            if (it.value() == this) {
                it = sheetCallbackMap.erase(it);
            } else {
                ++it;
            }
        }
    }
#endif

#ifndef QT_MAC_USE_COCOA
    void openCarbonPrintPanel(Qt::WindowModality modality);
    void closeCarbonPrintPanel();
    static void printDialogSheetDoneCallback(PMPrintSession printSession, WindowRef /*documentWindow*/, Boolean accepted) {
        QPrintDialogPrivate *priv = sheetCallbackMap.value(printSession);
        if (!priv) {
            qWarning("%s:%d: QPrintDialog::exec: Could not retrieve data structure, "
                     "you most likely now have an infinite loop", __FILE__, __LINE__);
            return;
        }
        priv->q_func()->done(accepted ? QDialog::Accepted : QDialog::Rejected);
        priv->closeCarbonPrintPanel();
    }
#else
    void openCocoaPrintPanel(Qt::WindowModality modality);
    void closeCocoaPrintPanel();
#endif
    void initBeforeRun();

    inline QPrintDialog *printDialog() { return q_func(); }

    inline void _q_printToFileChanged(int) {}
    inline void _q_rbPrintRangeToggled(bool) {}
    inline void _q_printerChanged(int) {}
#ifndef QT_NO_MESSAGEBOX
    inline void _q_checkFields() {}
#endif
    inline void _q_chbPrintLastFirstToggled(bool) {}
    inline void _q_paperSizeChanged(int) {}
    inline void _q_btnBrowseClicked() {}
    inline void _q_btnPropertiesClicked() {}

    QMacPrintEnginePrivate *ep;
    NSPrintPanel *printPanel;
#ifndef QT_MAC_USE_COCOA
    PMSheetDoneUPP upp;
    static QHash<PMPrintSession, QPrintDialogPrivate *> sheetCallbackMap;
#endif
};

QT_END_NAMESPACE

QT_USE_NAMESPACE

#ifdef QT_MAC_USE_COCOA

@class QT_MANGLE_NAMESPACE(QCocoaPrintPanelDelegate);

@interface QT_MANGLE_NAMESPACE(QCocoaPrintPanelDelegate) : NSObject {
}
- (void)printPanelDidEnd:(NSPrintPanel *)printPanel
        returnCode:(int)returnCode contextInfo:(void *)contextInfo;
@end

@implementation QT_MANGLE_NAMESPACE(QCocoaPrintPanelDelegate)
- (void)printPanelDidEnd:(NSPrintPanel *)printPanel
        returnCode:(int)returnCode contextInfo:(void *)contextInfo
{
    Q_UNUSED(printPanel);

    QPrintDialogPrivate *d = static_cast<QPrintDialogPrivate *>(contextInfo);
    QPrintDialog *dialog = d->printDialog();

    if (returnCode == NSOKButton) {
        UInt32 frompage, topage;
        PMGetFirstPage(d->ep->settings, &frompage);
        PMGetLastPage(d->ep->settings, &topage);
        topage = qMin(UInt32(INT_MAX), topage);
        dialog->setFromTo(frompage, topage);

        // OK, I need to map these values back let's see
        // If from is 1 and to is INT_MAX, then print it all
        // (Apologies to the folks with more than INT_MAX pages)
        if (dialog->fromPage() == 1 && dialog->toPage() == INT_MAX) {
            dialog->setPrintRange(QPrintDialog::AllPages);
            dialog->setFromTo(0, 0);
        } else {
            dialog->setPrintRange(QPrintDialog::PageRange); // In a way a lie, but it shouldn't hurt.
            // Carbon hands us back a very large number here even for ALL, set it to max
            // in that case to follow the behavior of the other print dialogs.
            if (dialog->maxPage() < dialog->toPage())
                dialog->setFromTo(dialog->fromPage(), dialog->maxPage());
        }
        // Keep us in sync with file output
        PMDestinationType dest;

        // If the user selected print to file, the session has been
        // changed behind our back and our d->ep->session object is a
        // dangling pointer. Update it based on the "current" session
        d->ep->session = static_cast<PMPrintSession>([d->ep->printInfo PMPrintSession]);

        PMSessionGetDestinationType(d->ep->session, d->ep->settings, &dest);
        if (dest == kPMDestinationFile) {
            QCFType<CFURLRef> file;
            PMSessionCopyDestinationLocation(d->ep->session, d->ep->settings, &file);
            UInt8 localFile[2048];  // Assuming there's a POSIX file system here.
            CFURLGetFileSystemRepresentation(file, true, localFile, sizeof(localFile));
            d->ep->outputFilename
                = QString::fromUtf8(reinterpret_cast<const char *>(localFile));
        } else {
            // Keep output format.
            QPrinter::OutputFormat format;
            format = d->printer->outputFormat();
            d->printer->setOutputFileName(QString());
            d->printer->setOutputFormat(format);
        }
    }

    dialog->done((returnCode == NSOKButton) ? QDialog::Accepted : QDialog::Rejected);
}
@end

#endif

QT_BEGIN_NAMESPACE

extern void macStartInterceptWindowTitle(QWidget *window);
extern void macStopInterceptWindowTitle();


void QPrintDialogPrivate::initBeforeRun()
{
    Q_Q(QPrintDialog);
    // If someone is reusing a QPrinter object, the end released all our old
    // information. In this case, we must reinitialize.
    if (ep->session == 0)
        ep->initialize();


    // It seems the only way that PM lets you use all is if the minimum
    // for the page range is 1. This _kind of_ makes sense if you think about
    // it. However, calling PMSetFirstPage() or PMSetLastPage() always enforces
    // the range.
    PMSetPageRange(ep->settings, q->minPage(), q->maxPage());
    if (q->printRange() == QAbstractPrintDialog::PageRange) {
        PMSetFirstPage(ep->settings, q->fromPage(), false);
        PMSetLastPage(ep->settings, q->toPage(), false);
    }
}

#ifndef QT_MAC_USE_COCOA
QHash<PMPrintSession, QPrintDialogPrivate *> QPrintDialogPrivate::sheetCallbackMap;
void QPrintDialogPrivate::openCarbonPrintPanel(Qt::WindowModality modality)
{
    Q_Q(QPrintDialog);
    initBeforeRun();
    sheetCallbackMap.insert(ep->session, this);
    if (modality == Qt::ApplicationModal) {
        QWidget modal_widg(0, Qt::Window);
        modal_widg.setObjectName(QLatin1String(__FILE__ "__modal_dlg"));
        modal_widg.createWinId();
        QApplicationPrivate::enterModal(&modal_widg);
        QApplicationPrivate::native_modal_dialog_active = true;
        Boolean acceptStatus;
        PMSessionPrintDialog(ep->session, ep->settings, ep->format, &acceptStatus);
        QApplicationPrivate::leaveModal(&modal_widg);
        QApplicationPrivate::native_modal_dialog_active = false;
        printDialogSheetDoneCallback(ep->session, 0, acceptStatus);
    } else {
        // Window Modal means that we use a sheet at the moment, there's no other way to do it correctly.
        if (!upp)
            upp = NewPMSheetDoneUPP(QPrintDialogPrivate::printDialogSheetDoneCallback);
        PMSessionUseSheets(ep->session, qt_mac_window_for(q->parentWidget()), upp);
        QApplicationPrivate::native_modal_dialog_active = true;
        Boolean unused;
        PMSessionPrintDialog(ep->session, ep->settings, ep->format, &unused);
    }
}

void QPrintDialogPrivate::closeCarbonPrintPanel()
{
    Q_Q(QPrintDialog);
    QApplicationPrivate::native_modal_dialog_active = false;
    if (q->result() == QDialog::Accepted) {
        UInt32 frompage, topage;
        PMGetFirstPage(ep->settings, &frompage);
        PMGetLastPage(ep->settings, &topage);
        topage = qMin(UInt32(INT_MAX), topage);
        q->setFromTo(frompage, topage);

        // OK, I need to map these values back let's see
        // If from is 1 and to is INT_MAX, then print it all
        // (Apologies to the folks with more than INT_MAX pages)
        // ...that's a joke.
        if (q->fromPage() == 1 && q->toPage() == INT_MAX) {
            q->setPrintRange(QAbstractPrintDialog::AllPages);
            q->setFromTo(0,0);
        } else {
            q->setPrintRange(QAbstractPrintDialog::PageRange); // In a way a lie, but it shouldn't hurt.
            // Carbon hands us back a very large number here even for ALL, set it to max
            // in that case to follow the behavior of the other print dialogs.
            if (q->maxPage() < q->toPage())
                q->setFromTo(q->fromPage(), q->maxPage());
        }
        // Keep us in sync with file output
        PMDestinationType dest;
        PMSessionGetDestinationType(ep->session, ep->settings, &dest);
        if (dest == kPMDestinationFile) {
            QCFType<CFURLRef> file;
            PMSessionCopyDestinationLocation(ep->session, ep->settings, &file);
            UInt8 localFile[2048];  // Assuming there's a POSIX file system here.
            CFURLGetFileSystemRepresentation(file, true, localFile, sizeof(localFile));
            ep->outputFilename = QString::fromUtf8(reinterpret_cast<const char *>(localFile));
        } else {
            ep->outputFilename = QString();
        }
    }
    sheetCallbackMap.remove(ep->session);
}
#else
void QPrintDialogPrivate::openCocoaPrintPanel(Qt::WindowModality modality)
{
    Q_Q(QPrintDialog);

    initBeforeRun();

    QPrintDialog::PrintDialogOptions qtOptions = q->options();
    NSPrintPanelOptions macOptions = NSPrintPanelShowsCopies;
    if (qtOptions & QPrintDialog::PrintPageRange)
        macOptions |= NSPrintPanelShowsPageRange;
    if (qtOptions & QPrintDialog::PrintShowPageSize)
        macOptions |= NSPrintPanelShowsPaperSize | NSPrintPanelShowsPageSetupAccessory
                      | NSPrintPanelShowsOrientation;

    macStartInterceptWindowTitle(q);
    printPanel = [NSPrintPanel printPanel];
    QT_MANGLE_NAMESPACE(QCocoaPrintPanelDelegate) *delegate = [[QT_MANGLE_NAMESPACE(QCocoaPrintPanelDelegate) alloc] init];

    // Call processEvents in case the event dispatcher has been interrupted, and needs to do
    // cleanup of modal sessions. Do this before showing the native dialog, otherwise it will
    // close down during the cleanup (QTBUG-17913):
    qApp->processEvents(QEventLoop::ExcludeUserInputEvents, QEventLoop::ExcludeSocketNotifiers);

    [printPanel setOptions:macOptions];

    if (modality == Qt::ApplicationModal) {
        int rval = [printPanel runModalWithPrintInfo:ep->printInfo];
        [delegate printPanelDidEnd:printPanel returnCode:rval contextInfo:this];
    } else {
        Q_ASSERT(q->parentWidget());
        NSWindow *windowRef = qt_mac_window_for(q->parentWidget());
        [printPanel beginSheetWithPrintInfo:ep->printInfo
                             modalForWindow:windowRef
                                   delegate:delegate
                             didEndSelector:@selector(printPanelDidEnd:returnCode:contextInfo:)
                                contextInfo:this];
    }

    macStopInterceptWindowTitle();
}

void QPrintDialogPrivate::closeCocoaPrintPanel()
{
    // ###
}
#endif

static bool warnIfNotNative(QPrinter *printer)
{
    if (printer->outputFormat() != QPrinter::NativeFormat) {
        qWarning("QPrintDialog: Cannot be used on non-native printers");
        return false;
    }
    return true;
}


QPrintDialog::QPrintDialog(QPrinter *printer, QWidget *parent)
    : QAbstractPrintDialog(*(new QPrintDialogPrivate), printer, parent)
{
    Q_D(QPrintDialog);
    if (!warnIfNotNative(d->printer))
        return;
    d->ep = static_cast<QMacPrintEngine *>(d->printer->paintEngine())->d_func();
}

QPrintDialog::QPrintDialog(QWidget *parent)
    : QAbstractPrintDialog(*(new QPrintDialogPrivate), 0, parent)
{
    Q_D(QPrintDialog);
    if (!warnIfNotNative(d->printer))
        return;
    d->ep = static_cast<QMacPrintEngine *>(d->printer->paintEngine())->d_func();
}

QPrintDialog::~QPrintDialog()
{
}

int QPrintDialog::exec()
{
    Q_D(QPrintDialog);
    if (!warnIfNotNative(d->printer))
        return QDialog::Rejected;

#ifndef QT_MAC_USE_COCOA
    d->openCarbonPrintPanel(Qt::ApplicationModal);
#else
    QMacCocoaAutoReleasePool pool;

    d->openCocoaPrintPanel(Qt::ApplicationModal);
    d->closeCocoaPrintPanel();
#endif
    return result();
}

#ifdef QT3_SUPPORT
QPrinter *QPrintDialog::printer() const
{
    Q_D(const QPrintDialog);
    return d->printer;
}
#endif

/*!
    \reimp
*/
void QPrintDialog::setVisible(bool visible)
{
    Q_D(QPrintDialog);

    bool isCurrentlyVisible = (d->printPanel != 0);

    if (!visible == !isCurrentlyVisible)
        return;

    if (d->printer->outputFormat() != QPrinter::NativeFormat)
        return;

    if (visible) {
#ifndef QT_MAC_USE_COCOA
        d->openCarbonPrintPanel(parentWidget() ? Qt::WindowModal
                                               : Qt::ApplicationModal);
#else
        d->openCocoaPrintPanel(parentWidget() ? Qt::WindowModal
                                              : Qt::ApplicationModal);
#endif
        return;
    } else {
        if (d->printPanel) {
#ifndef QT_MAC_USE_COCOA
            d->closeCarbonPrintPanel();
#else
            d->closeCocoaPrintPanel();
#endif
            return;
        }
    }
}

QT_END_NAMESPACE

#include "moc_qprintdialog.cpp"

#endif // QT_NO_PRINTDIALOG