Port QMacPrintEngine and QCoreGraphicsPaintEngine from Qt 4 to Qt 5

Copy qprintengine_mac_p.h, qprintengine_mac.mm, qpaintengine_mac_p.h,
and qpaintengine_mac.cpp (as qpaintengine_mac.mm) from src/gui/painting/
in the 4.8 branch of http://git.gitorious.org/qt/qt.git at commit
e6bd33d4aef0e4538d7918e7ab130624c911b553.

The following changes are necessary to port these files to the Qt 5 API:

- The copyright notice on these files has been updated to match the
  header.LGPL template.

- Fix #includes for qprintengine_mac* and qpaintengine_mac*, as some
  headers have moved in Qt 5.

- Remove extern forward declarations for functions that no longer exist.

- Remove friend declarations for classes/functions that are not part of
  the Cocoa platform plugin.

- Remove QT_MAC_USE_COCOA blocks. Qt is always using Cocoa now, there
  is no need to keep the non-Cocoa code paths anymore. The
  QMacPrintEngine::shouldSuppressStatus() method was also removed,
  since it is no longer used.

- Do not use Qt::UniteClip, it was removed in commit
  01b72952c38b9193138eabdab6bdab632cd75ebd

- Use QCocoaAutoReleasePool in qprintengine_mac.mm

- Use QPlatformPrintSupport::convert*() functions in QMacPrintEngine,
  since we cannot use non-exported functions from QtPrintSupport in the
  Cocoa plugin.

- Use qt_mac_image_to_cg_image() to convert QPixmap to CGImageRef. First
  convert QPixmap to QImage (cheap, since the Cocoa platform plugin
  uses QRasterPlatformPixmap), and then convert the QImage to CFImageRef
  using the existing helper function.

- Copy qt_mac_cg_context() to the Cocoa platform plugin from
  qmacstyle_mac.mm, adding a note at each location about the
  duplication.

- Add qt_mac_QRegionToHIMutableShape() helper. Adapt the Qt 4.x code for
  QRegion::toHIMutableShape(), and use this in QCoreGraphicsPaintEngine.

- Add qt_mac_drawCGImage() and qt_mac_get_scalefactor() helper. These
  functions are copied directly from the 4.8 branch of
  http://git.gitorious.org/qt/qt.git at the same revision shown above.

- Add qt_mac_create_imagemask() helper in qpaintengine_mac.cpp.  This
  helper is based on the function with the same name from the 4.8
  branch of http://git.gitorious.org/qt/qt.git at the same revision
  shown above. The correctness of the implementation has not yet been
  verified.

Since these files use the QPrinter API from QtPrintSupport, the Cocoa
plugin now needs to link to that library as well.

Change-Id: I90b9bbe201327489ef9e1b3294e68e91ddda27bd
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

1 files changed, 157 insertions, 0 deletions

diff --git a/src/plugins/platforms/cocoa/qprintengine_mac_p.h b/src/plugins/platforms/cocoa/qprintengine_mac_p.h
new file mode 100644
index 0000000000..38bce4ff67
--- /dev/null
+++ b/src/plugins/platforms/cocoa/qprintengine_mac_p.h
@@ -0,0 +1,157 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the plugins 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.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPRINTENGINE_MAC_P_H
+#define QPRINTENGINE_MAC_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QT_NO_PRINTER
+
+#include <QtPrintSupport/qprinter.h>
+#include <QtPrintSupport/qprintengine.h>
+#include <QtGui/private/qpainter_p.h>
+
+#include "qpaintengine_mac_p.h"
+
+#ifdef __OBJC__
+@class NSPrintInfo;
+#else
+typedef void NSPrintInfo;
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QPrinterPrivate;
+class QMacPrintEnginePrivate;
+class QMacPrintEngine : public QPaintEngine, public QPrintEngine
+{
+    Q_DECLARE_PRIVATE(QMacPrintEngine)
+public:
+    QMacPrintEngine(QPrinter::PrinterMode mode);
+
+    Qt::HANDLE handle() const;
+
+    bool begin(QPaintDevice *dev);
+    bool end();
+    virtual QPaintEngine::Type type() const { return QPaintEngine::MacPrinter; }
+
+    QPaintEngine *paintEngine() const;
+
+    void setProperty(PrintEnginePropertyKey key, const QVariant &value);
+    QVariant property(PrintEnginePropertyKey key) const;
+
+    QPrinter::PrinterState printerState() const;
+
+    bool newPage();
+    bool abort();
+    int metric(QPaintDevice::PaintDeviceMetric) const;
+
+    //forwarded functions
+
+    void updateState(const QPaintEngineState &state);
+
+    virtual void drawLines(const QLineF *lines, int lineCount);
+    virtual void drawRects(const QRectF *r, int num);
+    virtual void drawPoints(const QPointF *p, int pointCount);
+    virtual void drawEllipse(const QRectF &r);
+    virtual void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
+    virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
+    virtual void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr, Qt::ImageConversionFlags flags);
+    virtual void drawTextItem(const QPointF &p, const QTextItem &ti);
+    virtual void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);
+    virtual void drawPath(const QPainterPath &);
+};
+
+class QMacPrintEnginePrivate : public QPaintEnginePrivate
+{
+    Q_DECLARE_PUBLIC(QMacPrintEngine)
+public:
+    QPrinter::PrinterMode mode;
+    QPrinter::PrinterState state;
+    QPrinter::Orientation orient;
+    NSPrintInfo *printInfo;
+    PMPageFormat format;
+    PMPrintSettings settings;
+    PMPrintSession session;
+    PMResolution resolution;
+    QString outputFilename;
+    bool fullPage;
+    QPaintEngine *paintEngine;
+    bool hasCustomPaperSize;
+    QSizeF customSize;
+    bool hasCustomPageMargins;
+    qreal leftMargin;
+    qreal topMargin;
+    qreal rightMargin;
+    qreal bottomMargin;
+    QHash<QMacPrintEngine::PrintEnginePropertyKey, QVariant> valueCache;
+    QMacPrintEnginePrivate() : mode(QPrinter::ScreenResolution), state(QPrinter::Idle),
+                               orient(QPrinter::Portrait), printInfo(0), format(0), settings(0),
+                               session(0), paintEngine(0),
+                               hasCustomPaperSize(false), hasCustomPageMargins(false) {}
+    ~QMacPrintEnginePrivate();
+    void initialize();
+    void releaseSession();
+    bool newPage_helper();
+    void setPaperSize(QPrinter::PaperSize ps);
+    QPrinter::PaperSize paperSize() const;
+    QList<QVariant> supportedResolutions() const;
+    inline bool isPrintSessionInitialized() const
+    {
+        return printInfo != 0;
+    }
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_PRINTER
+
+#endif // QPRINTENGINE_WIN_P_H