Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

11 files changed, 2312 insertions, 0 deletions

diff --git a/vcl/ios/DataFlavorMapping.cxx b/vcl/ios/DataFlavorMapping.cxx
new file mode 100644
index 000000000..05abf2b8a
--- /dev/null
+++ b/vcl/ios/DataFlavorMapping.cxx
@@ -0,0 +1,576 @@
+/* -*- Mode: ObjC; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include "DataFlavorMapping.hxx"
+#include "HtmlFmtFlt.hxx"
+#include <com/sun/star/datatransfer/UnsupportedFlavorException.hpp>
+#include <com/sun/star/datatransfer/XMimeContentType.hpp>
+#include <com/sun/star/datatransfer/MimeContentTypeFactory.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <comphelper/processfactory.hxx>
+
+#include <rtl/ustring.hxx>
+#include <sal/log.hxx>
+#include <osl/endian.h>
+
+#include <cassert>
+#include <cstring>
+
+#include <premac.h>
+#include <UIKit/UIKit.h>
+#include <MobileCoreServices/MobileCoreServices.h>
+#include <postmac.h>
+
+using namespace css::datatransfer;
+using namespace css::uno;
+using namespace css::lang;
+using namespace cppu;
+
+namespace
+{
+/* Determine whether or not a DataFlavor is valid.
+   */
+bool isValidFlavor(const DataFlavor& aFlavor)
+{
+    size_t len = aFlavor.MimeType.getLength();
+    Type dtype = aFlavor.DataType;
+    return ((len > 0)
+            && ((dtype == cppu::UnoType<Sequence<sal_Int8>>::get())
+                || (dtype == cppu::UnoType<OUString>::get())));
+}
+
+OUString NSStringToOUString(const NSString* cfString)
+{
+    assert(cfString && "Invalid parameter");
+
+    const char* utf8Str = [cfString UTF8String];
+    unsigned int len = rtl_str_getLength(utf8Str);
+
+    return OUString(utf8Str, len, RTL_TEXTENCODING_UTF8);
+}
+
+NSString* OUStringToNSString(const OUString& ustring)
+{
+    OString utf8Str = OUStringToOString(ustring, RTL_TEXTENCODING_UTF8);
+    return [NSString stringWithCString:utf8Str.getStr() encoding:NSUTF8StringEncoding];
+}
+
+NSString* PBTYPE_UTF8PLAINTEXT = (__bridge NSString*)kUTTypeUTF8PlainText;
+NSString* PBTYPE_RTF = (__bridge NSString*)kUTTypeRTF;
+NSString* PBTYPE_PNG = (__bridge NSString*)kUTTypePNG;
+NSString* PBTYPE_JPEG = (__bridge NSString*)kUTTypeJPEG;
+NSString* PBTYPE_HTML = (__bridge NSString*)kUTTypeHTML;
+NSString* PBTYPE_PDF = (__bridge NSString*)kUTTypePDF;
+
+const char* FLAVOR_SESX
+    = "application/x-openoffice-embed-source-xml;windows_formatname=\"Star Embed Source (XML)\"";
+const char* FLAVOR_SLSDX = "application/"
+                           "x-openoffice-linksrcdescriptor-xml;windows_formatname=\"Star Link "
+                           "Source Descriptor (XML)\"";
+const char* FLAVOR_LSX
+    = "application/x-openoffice-link-source-xml;windows_formatname=\"Star Link Source (XML)\"";
+const char* FLAVOR_EOX
+    = "application/x-openoffice-embedded-obj-xml;windows_formatname=\"Star Embedded Object (XML)\"";
+const char* FLAVOR_SVXB
+    = "application/x-openoffice-svbx;windows_formatname=\"SVXB (StarView Bitmap/Animation)\"";
+const char* FLAVOR_GDIMF
+    = "application/x-openoffice-gdimetafile;windows_formatname=\"GDIMetaFile\"";
+const char* FLAVOR_SODX = "application/x-openoffice-objectdescriptor-xml;windows_formatname=\"Star "
+                          "Object Descriptor (XML)\"";
+struct FlavorMap
+{
+    NSString* SystemFlavor;
+    const char* OOoFlavor;
+    const char* HumanPresentableName;
+    bool DataTypeOUString; // sequence<byte> otherwise
+};
+
+// The SystemFlavor member is nil for the cases where there is no predefined pasteboard type UTI and
+// we use the internal MIME type (media type) also on the pasteboard. That is OK, there dos not seem
+// to be a requirement that the types are well-formed UTIs even on iOS. For an introduction to UTIs,
+// see for instance
+// https://alastairs-place.net/blog/2012/06/06/utis-are-better-than-you-think-and-heres-why/
+//
+// In those cases the MIME type might actually have parameters appended, separated by semicolons.
+// At least the FLAVOR_SODX one must have at least a typename="%PRODUCTNAME %PRODUCTVERSION
+// Spreadsheet" parameter (with macros expanded and translated) for LO to recognise it. See
+// lcl_TestFormat() in sc/source/ui/view/cellsh.cxx.
+
+static const FlavorMap flavorMap[]
+    = { { PBTYPE_UTF8PLAINTEXT, "text/plain;charset=utf-16", "Unicode Text (UTF-16)", true },
+        { PBTYPE_RTF, "text/rtf", "Rich Text Format", false },
+        { PBTYPE_PNG, "image/png", "Portable Network Graphics", false },
+        { PBTYPE_JPEG, "image/jpeg", "JPEG", false },
+        { PBTYPE_HTML, "text/html", "Plain HTML", false },
+        { PBTYPE_PDF, "application/pdf", "PDF File", false },
+        { nil, FLAVOR_SESX, "Star Embed Source (XML)", false },
+        { nil, FLAVOR_SLSDX, "Star Link Source Descriptor (XML)", false },
+        { nil, FLAVOR_LSX, "Star Link Source (XML)", false },
+        { nil, FLAVOR_EOX, "Star Embedded Object (XML)", false },
+        { nil, FLAVOR_SVXB, "SVXB (StarView Bitmap/Animation", false },
+        { nil, FLAVOR_GDIMF, "GDIMetaFile", false },
+        { nil, FLAVOR_SODX, "Star Object Descriptor (XML)", false } };
+
+#define SIZE_FLAVOR_MAP (sizeof(flavorMap) / sizeof(FlavorMap))
+
+inline bool isByteSequenceType(const Type& theType)
+{
+    return (theType == cppu::UnoType<Sequence<sal_Int8>>::get());
+}
+
+inline bool isOUStringType(const Type& theType)
+{
+    return (theType == cppu::UnoType<OUString>::get());
+}
+
+} // unnamed namespace
+
+/* A base class for other data provider.
+ */
+class DataProviderBaseImpl : public DataProvider
+{
+public:
+    DataProviderBaseImpl(const Any& data);
+    DataProviderBaseImpl(id data);
+    virtual ~DataProviderBaseImpl() override;
+
+protected:
+    Any mData;
+    //NSData* mSystemData;
+    id mSystemData;
+};
+
+DataProviderBaseImpl::DataProviderBaseImpl(const Any& data)
+    : mData(data)
+    , mSystemData(nil)
+{
+}
+
+DataProviderBaseImpl::DataProviderBaseImpl(id data)
+    : mSystemData(data)
+{
+    [mSystemData retain];
+}
+
+DataProviderBaseImpl::~DataProviderBaseImpl()
+{
+    if (mSystemData)
+    {
+        [mSystemData release];
+    }
+}
+
+class Utf8DataProvider : public DataProviderBaseImpl
+{
+public:
+    Utf8DataProvider(const Any& data);
+    Utf8DataProvider(NSData* data);
+
+    NSData* getSystemData() override;
+    Any getOOoData() override;
+};
+
+Utf8DataProvider::Utf8DataProvider(const Any& data)
+    : DataProviderBaseImpl(data)
+{
+}
+
+Utf8DataProvider::Utf8DataProvider(NSData* data)
+    : DataProviderBaseImpl(data)
+{
+}
+
+NSData* Utf8DataProvider::getSystemData()
+{
+    OUString ustr;
+    mData >>= ustr;
+
+    OString strUtf8;
+    ustr.convertToString(&strUtf8, RTL_TEXTENCODING_UTF8, OUSTRING_TO_OSTRING_CVTFLAGS);
+
+    return [NSData dataWithBytes:strUtf8.getStr() length:strUtf8.getLength()];
+}
+
+Any Utf8DataProvider::getOOoData()
+{
+    Any oOOData;
+
+    if (mSystemData)
+    {
+        oOOData <<= OUString(static_cast<const char*>([mSystemData bytes]), [mSystemData length],
+                             RTL_TEXTENCODING_UTF8);
+    }
+    else
+    {
+        oOOData = mData;
+    }
+
+    return oOOData;
+}
+
+class ByteSequenceDataProvider : public DataProviderBaseImpl
+{
+public:
+    ByteSequenceDataProvider(const Any& data);
+    ByteSequenceDataProvider(NSData* data);
+
+    NSData* getSystemData() override;
+    Any getOOoData() override;
+};
+
+ByteSequenceDataProvider::ByteSequenceDataProvider(const Any& data)
+    : DataProviderBaseImpl(data)
+{
+}
+
+ByteSequenceDataProvider::ByteSequenceDataProvider(NSData* data)
+    : DataProviderBaseImpl(data)
+{
+}
+
+NSData* ByteSequenceDataProvider::getSystemData()
+{
+    Sequence<sal_Int8> rawData;
+    mData >>= rawData;
+
+    return [NSData dataWithBytes:rawData.getArray() length:rawData.getLength()];
+}
+
+Any ByteSequenceDataProvider::getOOoData()
+{
+    Any oOOData;
+
+    if (mSystemData)
+    {
+        unsigned int flavorDataLength = [mSystemData length];
+        Sequence<sal_Int8> byteSequence;
+        byteSequence.realloc(flavorDataLength);
+        memcpy(byteSequence.getArray(), [mSystemData bytes], flavorDataLength);
+        oOOData <<= byteSequence;
+    }
+    else
+    {
+        oOOData = mData;
+    }
+
+    return oOOData;
+}
+
+class HTMLFormatDataProvider : public DataProviderBaseImpl
+{
+public:
+    HTMLFormatDataProvider(NSData* data);
+
+    NSData* getSystemData() override;
+    Any getOOoData() override;
+};
+
+HTMLFormatDataProvider::HTMLFormatDataProvider(NSData* data)
+    : DataProviderBaseImpl(data)
+{
+}
+
+NSData* HTMLFormatDataProvider::getSystemData()
+{
+    Sequence<sal_Int8> textHtmlData;
+    mData >>= textHtmlData;
+
+    Sequence<sal_Int8> htmlFormatData = TextHtmlToHTMLFormat(textHtmlData);
+
+    return [NSData dataWithBytes:htmlFormatData.getArray() length:htmlFormatData.getLength()];
+}
+
+Any HTMLFormatDataProvider::getOOoData()
+{
+    Any oOOData;
+
+    if (mSystemData)
+    {
+        unsigned int flavorDataLength = [mSystemData length];
+        Sequence<sal_Int8> unkHtmlData;
+
+        unkHtmlData.realloc(flavorDataLength);
+        memcpy(unkHtmlData.getArray(), [mSystemData bytes], flavorDataLength);
+
+        Sequence<sal_Int8>* pPlainHtml = &unkHtmlData;
+        Sequence<sal_Int8> plainHtml;
+
+        if (isHTMLFormat(unkHtmlData))
+        {
+            plainHtml = HTMLFormatToTextHtml(unkHtmlData);
+            pPlainHtml = &plainHtml;
+        }
+
+        oOOData <<= *pPlainHtml;
+    }
+    else
+    {
+        oOOData = mData;
+    }
+
+    return oOOData;
+}
+
+DataFlavorMapper::DataFlavorMapper()
+{
+    Reference<XComponentContext> xContext = comphelper::getProcessComponentContext();
+    mrXMimeCntFactory = MimeContentTypeFactory::create(xContext);
+}
+
+DataFlavorMapper::~DataFlavorMapper()
+{
+    // release potential NSStrings
+    for (OfficeOnlyTypes::iterator it = maOfficeOnlyTypes.begin(); it != maOfficeOnlyTypes.end();
+         ++it)
+    {
+        [it->second release];
+        it->second = nil;
+    }
+}
+
+DataFlavor DataFlavorMapper::systemToOpenOfficeFlavor(const NSString* systemDataFlavor) const
+{
+    DataFlavor oOOFlavor;
+
+    for (size_t i = 0; i < SIZE_FLAVOR_MAP; i++)
+    {
+        if ((flavorMap[i].SystemFlavor == nil
+             && ([systemDataFlavor
+                     isEqualToString:[NSString stringWithUTF8String:flavorMap[i].OOoFlavor]]
+                 ||
+                 [systemDataFlavor hasPrefix:[[NSString stringWithUTF8String:flavorMap[i].OOoFlavor]
+                                                 stringByAppendingString:@";"]]))
+            || (flavorMap[i].SystemFlavor != nil &&
+                [systemDataFlavor
+                    isEqualToString:const_cast<NSString*>(flavorMap[i].SystemFlavor)]))
+        {
+            if (flavorMap[i].SystemFlavor == nil)
+                oOOFlavor.MimeType = NSStringToOUString(systemDataFlavor);
+            else
+                oOOFlavor.MimeType = OUString::createFromAscii(flavorMap[i].OOoFlavor);
+            oOOFlavor.HumanPresentableName
+                = OUString::createFromAscii(flavorMap[i].HumanPresentableName);
+            oOOFlavor.DataType = flavorMap[i].DataTypeOUString
+                                     ? cppu::UnoType<OUString>::get()
+                                     : cppu::UnoType<Sequence<sal_Int8>>::get();
+            return oOOFlavor;
+        }
+    } // for
+
+    // look if this might be an internal type; if it comes in here it must have
+    // been through openOfficeToSystemFlavor before, so it should then be in the map
+    OUString aTryFlavor(NSStringToOUString(systemDataFlavor));
+    if (maOfficeOnlyTypes.find(aTryFlavor) != maOfficeOnlyTypes.end())
+    {
+        oOOFlavor.MimeType = aTryFlavor;
+        oOOFlavor.HumanPresentableName.clear();
+        oOOFlavor.DataType = cppu::UnoType<Sequence<sal_Int8>>::get();
+    }
+
+    return oOOFlavor;
+}
+
+NSString* DataFlavorMapper::openOfficeToSystemFlavor(const DataFlavor& oOOFlavor,
+                                                     bool& rbInternal) const
+{
+    NSString* sysFlavor = nullptr;
+    rbInternal = false;
+
+    for (size_t i = 0; i < SIZE_FLAVOR_MAP; ++i)
+    {
+        if (oOOFlavor.MimeType.startsWith(OUString::createFromAscii(flavorMap[i].OOoFlavor)))
+        {
+            if (flavorMap[i].SystemFlavor != nil)
+                sysFlavor = flavorMap[i].SystemFlavor;
+            else
+                sysFlavor = OUStringToNSString(oOOFlavor.MimeType);
+        }
+    }
+
+    if (!sysFlavor)
+    {
+        // For some reason, if we allow text/html, we get an OSL_ENSURE failure in xmloff that
+        // apparently is a symptom of something being seriously wrong:
+        // xmloff/source/transform/OOo2Oasis.cxx:1925: duplicate doc handler
+        // Because is then followed a bit later by an assertion failure:
+        // Assertion failed: (!m_pFirst && !m_pLast && "There are still indices registered"), function ~SwIndexReg, file [...]/sw/source/core/bastyp/index.cxx, line 226
+
+        if (oOOFlavor.MimeType == "text/html")
+            return nil;
+
+        rbInternal = true;
+        OfficeOnlyTypes::const_iterator it = maOfficeOnlyTypes.find(oOOFlavor.MimeType);
+
+        if (it == maOfficeOnlyTypes.end())
+            sysFlavor = maOfficeOnlyTypes[oOOFlavor.MimeType]
+                = OUStringToNSString(oOOFlavor.MimeType);
+        else
+            sysFlavor = it->second;
+    }
+
+    return sysFlavor;
+}
+
+NSString* DataFlavorMapper::openOfficeImageToSystemFlavor()
+{
+    if ([[UIPasteboard generalPasteboard] containsPasteboardTypes:@[ PBTYPE_PNG ]])
+        return PBTYPE_PNG;
+    else if ([[UIPasteboard generalPasteboard] containsPasteboardTypes:@[ PBTYPE_JPEG ]])
+        return PBTYPE_JPEG;
+    else if ([[UIPasteboard generalPasteboard] containsPasteboardTypes:@[ PBTYPE_PDF ]])
+        return PBTYPE_PDF;
+    return @"";
+}
+
+DataProviderPtr_t
+DataFlavorMapper::getDataProvider(const NSString* systemFlavor,
+                                  Reference<XTransferable> const& rTransferable) const
+{
+    DataProviderPtr_t dp;
+
+    try
+    {
+        DataFlavor oOOFlavor = systemToOpenOfficeFlavor(systemFlavor);
+
+        Any data = rTransferable->getTransferData(oOOFlavor);
+
+        if (isByteSequenceType(data.getValueType()))
+        {
+            dp = DataProviderPtr_t(new ByteSequenceDataProvider(data));
+        }
+        else // Must be OUString type
+        {
+            SAL_WARN_IF(!isOUStringType(data.getValueType()), "vcl", "must be OUString type");
+            dp = DataProviderPtr_t(new Utf8DataProvider(data));
+        }
+    }
+    catch (const UnsupportedFlavorException& e)
+    {
+        SAL_WARN("vcl.ios.clipboard",
+                 "DataFlavorMapper::getDataProvider(): Exception: " << e.Message);
+        // Somebody violates the contract of the clipboard
+        // interface @see XTransferable
+    }
+
+    return dp;
+}
+
+DataProviderPtr_t DataFlavorMapper::getDataProvider(const NSString* systemFlavor,
+                                                    NSData* systemData)
+{
+    DataProviderPtr_t dp;
+
+    if (systemData == nil)
+        return dp;
+
+    if ([systemFlavor caseInsensitiveCompare:PBTYPE_UTF8PLAINTEXT] == NSOrderedSame)
+    {
+        dp = DataProviderPtr_t(new Utf8DataProvider(systemData));
+    }
+    else if ([systemFlavor caseInsensitiveCompare:PBTYPE_HTML] == NSOrderedSame)
+    {
+        dp = DataProviderPtr_t(new HTMLFormatDataProvider(systemData));
+    }
+    else
+    {
+        dp = DataProviderPtr_t(new ByteSequenceDataProvider(systemData));
+    }
+
+    return dp;
+}
+
+bool DataFlavorMapper::isValidMimeContentType(const OUString& contentType) const
+{
+    bool result = true;
+
+    try
+    {
+        Reference<XMimeContentType> xCntType(mrXMimeCntFactory->createMimeContentType(contentType));
+    }
+    catch (const IllegalArgumentException& e)
+    {
+        SAL_WARN("vcl.ios.clipboard",
+                 "DataFlavorMapper::isValidMimeContentType(): Exception: " << e.Message);
+        result = false;
+    }
+
+    return result;
+}
+
+NSArray* DataFlavorMapper::flavorSequenceToTypesArray(
+    const css::uno::Sequence<css::datatransfer::DataFlavor>& flavors) const
+{
+    const sal_uInt32 nFlavors = flavors.getLength();
+    NSMutableArray* array = [[NSMutableArray alloc] initWithCapacity:1];
+
+    bool bNeedDummyInternalFlavor(false);
+
+    for (sal_uInt32 i = 0; i < nFlavors; i++)
+    {
+        if (flavors[i].MimeType.startsWith("image/bmp"))
+        {
+            [array addObject:PBTYPE_PNG];
+        }
+        else
+        {
+            const NSString* str = openOfficeToSystemFlavor(flavors[i], bNeedDummyInternalFlavor);
+
+            if (str != nil)
+            {
+                [str retain];
+                [array addObject:str];
+            }
+        }
+    }
+
+    return [array autorelease];
+}
+
+css::uno::Sequence<css::datatransfer::DataFlavor>
+DataFlavorMapper::typesArrayToFlavorSequence(NSArray* types) const
+{
+    int nFormats = [types count];
+    Sequence<DataFlavor> flavors;
+
+    for (int i = 0; i < nFormats; i++)
+    {
+        NSString* sysFormat = [types objectAtIndex:i];
+        DataFlavor oOOFlavor = systemToOpenOfficeFlavor(sysFormat);
+
+        if (isValidFlavor(oOOFlavor))
+        {
+            flavors.realloc(flavors.getLength() + 1);
+            flavors.getArray()[flavors.getLength() - 1] = oOOFlavor;
+            SAL_INFO("vcl.ios.clipboard",
+                     "Mapped " << [sysFormat UTF8String] << " to " << oOOFlavor.MimeType);
+        }
+        else
+        {
+            SAL_INFO("vcl.ios.clipboard",
+                     "Was not able to map " << [sysFormat UTF8String] << " to an internal flavour");
+        }
+    }
+
+    return flavors;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/DataFlavorMapping.hxx b/vcl/ios/DataFlavorMapping.hxx
new file mode 100644
index 000000000..dd115575f
--- /dev/null
+++ b/vcl/ios/DataFlavorMapping.hxx
@@ -0,0 +1,124 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/datatransfer/DataFlavor.hpp>
+#include <com/sun/star/datatransfer/XMimeContentTypeFactory.hpp>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/lang/XMultiComponentFactory.hpp>
+
+#include <premac.h>
+#import <UIKit/UIKit.h>
+#include <postmac.h>
+
+#include <memory>
+#include <unordered_map>
+
+/* An interface to get the clipboard data in either
+   system or OOo format.
+ */
+class DataProvider
+{
+public:
+    virtual ~DataProvider(){};
+
+    /* Get the clipboard data in the system format.
+     The caller has to retain/release the returned
+     CFDataRef on demand.
+   */
+    virtual NSData* getSystemData() = 0;
+
+    /* Get the clipboard data in OOo format.
+   */
+    virtual css::uno::Any getOOoData() = 0;
+};
+
+typedef std::unique_ptr<DataProvider> DataProviderPtr_t;
+
+class DataFlavorMapper
+{
+public:
+    /* Initialize a DataFavorMapper instance. Throws a RuntimeException in case the XMimeContentTypeFactory service
+     cannot be created.
+   */
+    DataFlavorMapper();
+    ~DataFlavorMapper();
+
+    /* Map a system data flavor to an OpenOffice data flavor.
+     Return an empty string if there is not suitable
+     mapping from a system data flavor to an OpenOffice data
+     flavor.
+  */
+    css::datatransfer::DataFlavor systemToOpenOfficeFlavor(const NSString* systemDataFlavor) const;
+
+    /* Map an OpenOffice data flavor to a system data flavor.
+     If there is no suitable mapping available NULL will
+     be returned.
+  */
+    NSString* openOfficeToSystemFlavor(const css::datatransfer::DataFlavor& oooDataFlavor,
+                                       bool& rbInternal) const;
+
+    /* Select the best available image data type
+     If there is no suitable mapping available NULL will
+     be returned.
+  */
+    static NSString* openOfficeImageToSystemFlavor();
+
+    /* Get a data provider which is able to provide the data 'rTransferable' offers in a format that can
+     be put on to the system clipboard.
+   */
+    DataProviderPtr_t getDataProvider(
+        const NSString* systemFlavor,
+        const css::uno::Reference<css::datatransfer::XTransferable>& rTransferable) const;
+
+    /* Get a data provider which is able to provide 'systemData' in the OOo expected format.
+   */
+    static DataProviderPtr_t getDataProvider(const NSString* systemFlavor, NSArray* systemData);
+
+    /* Get a data provider which is able to provide 'systemData' in the OOo expected format.
+   */
+    static DataProviderPtr_t getDataProvider(const NSString* systemFlavor, NSData* systemData);
+
+    /* Translate a sequence of DataFlavors into a NSArray of system types.
+     Only those DataFlavors for which a suitable mapping to a system
+     type exist will be contained in the returned types array.
+   */
+    NSArray* flavorSequenceToTypesArray(
+        const css::uno::Sequence<css::datatransfer::DataFlavor>& flavors) const;
+
+    /* Translate a NSArray of system types into a sequence of DataFlavors.
+     Only those types for which a suitable mapping to a DataFlavor
+     exist will be contained in the new DataFlavor Sequence.
+  */
+    css::uno::Sequence<css::datatransfer::DataFlavor>
+    typesArrayToFlavorSequence(NSArray* types) const;
+
+private:
+    /* Determines if the provided Mime content type is valid.
+   */
+    bool isValidMimeContentType(const OUString& contentType) const;
+
+private:
+    css::uno::Reference<css::datatransfer::XMimeContentTypeFactory> mrXMimeCntFactory;
+    typedef std::unordered_map<OUString, NSString*> OfficeOnlyTypes;
+    mutable OfficeOnlyTypes maOfficeOnlyTypes;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/HtmlFmtFlt.cxx b/vcl/ios/HtmlFmtFlt.cxx
new file mode 100644
index 000000000..4f90ced3b
--- /dev/null
+++ b/vcl/ios/HtmlFmtFlt.cxx
@@ -0,0 +1,172 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "HtmlFmtFlt.hxx"
+
+#include <rtl/string.h>
+#include <osl/diagnose.h>
+
+#include <string>
+#include <sstream>
+#include <vector>
+#include <iomanip>
+#include <cassert>
+
+using namespace com::sun::star::uno;
+
+// converts the openoffice text/html clipboard format to the HTML Format
+// well known under MS Windows
+// the MS HTML Format has a header before the real html data
+
+// Version:1.0      Version number of the clipboard. Starting is 0.9
+// StartHTML:       Byte count from the beginning of the clipboard to the start
+//                  of the context, or -1 if no context
+// EndHTML:         Byte count from the beginning of the clipboard to the end
+//                  of the context, or -1 if no context
+// StartFragment:   Byte count from the beginning of the clipboard to the
+//                  start of the fragment
+// EndFragment:     Byte count from the beginning of the clipboard to the
+//                  end of the fragment
+// StartSelection:  Byte count from the beginning of the clipboard to the
+//                  start of the selection
+// EndSelection:    Byte count from the beginning of the clipboard to the
+//                  end of the selection
+
+// StartSelection and EndSelection are optional
+// The fragment should be preceded and followed by the HTML comments
+// <!--StartFragment--> and <!--EndFragment--> (no space between !-- and the
+// text
+
+namespace
+{
+std::string GetHtmlFormatHeader(size_t startHtml, size_t endHtml, size_t startFragment,
+                                size_t endFragment)
+{
+    std::ostringstream htmlHeader;
+    htmlHeader << "Version:1.0" << '\r' << '\n';
+    htmlHeader << "StartHTML:" << std::setw(10) << std::setfill('0') << std::dec << startHtml
+               << '\r' << '\n';
+    htmlHeader << "EndHTML:" << std::setw(10) << std::setfill('0') << std::dec << endHtml << '\r'
+               << '\n';
+    htmlHeader << "StartFragment:" << std::setw(10) << std::setfill('0') << std::dec
+               << startFragment << '\r' << '\n';
+    htmlHeader << "EndFragment:" << std::setw(10) << std::setfill('0') << std::dec << endFragment
+               << '\r' << '\n';
+    return htmlHeader.str();
+}
+}
+
+// the office always writes the start and end html tag in upper cases and
+// without spaces both tags don't allow parameters
+const std::string TAG_HTML = std::string("<html>");
+const std::string TAG_END_HTML = std::string("</html>");
+
+// The body tag may have parameters so we need to search for the
+// closing '>' manually e.g. <BODY param> #92840#
+const std::string TAG_BODY = std::string("<body");
+const std::string TAG_END_BODY = std::string("</body");
+
+Sequence<sal_Int8> SAL_CALL TextHtmlToHTMLFormat(Sequence<sal_Int8> const& aTextHtml)
+{
+    OSL_ASSERT(aTextHtml.getLength() > 0);
+
+    if (aTextHtml.getLength() <= 0)
+        return Sequence<sal_Int8>();
+
+    // fill the buffer with dummy values to calc the exact length
+    std::string dummyHtmlHeader = GetHtmlFormatHeader(0, 0, 0, 0);
+    size_t lHtmlFormatHeader = dummyHtmlHeader.length();
+
+    std::string textHtml(reinterpret_cast<const char*>(aTextHtml.getConstArray()),
+                         reinterpret_cast<const char*>(aTextHtml.getConstArray())
+                             + aTextHtml.getLength());
+
+    std::string::size_type nStartHtml = textHtml.find(TAG_HTML) + lHtmlFormatHeader
+                                        - 1; // we start one before '<HTML>' Word 2000 does also so
+    std::string::size_type nEndHtml = textHtml.find(TAG_END_HTML) + lHtmlFormatHeader
+                                      + TAG_END_HTML.length()
+                                      + 1; // our SOffice 5.2 wants 2 behind </HTML>?
+
+    // The body tag may have parameters so we need to search for the
+    // closing '>' manually e.g. <BODY param> #92840#
+    std::string::size_type nStartFragment
+        = textHtml.find(">", textHtml.find(TAG_BODY)) + lHtmlFormatHeader + 1;
+    std::string::size_type nEndFragment = textHtml.find(TAG_END_BODY) + lHtmlFormatHeader;
+
+    std::string htmlFormat
+        = GetHtmlFormatHeader(nStartHtml, nEndHtml, nStartFragment, nEndFragment);
+    htmlFormat += textHtml;
+
+    Sequence<sal_Int8> byteSequence(htmlFormat.length() + 1); // space the trailing '\0'
+    memset(byteSequence.getArray(), 0, byteSequence.getLength());
+
+    memcpy(static_cast<void*>(byteSequence.getArray()),
+           static_cast<const void*>(htmlFormat.c_str()), htmlFormat.length());
+
+    return byteSequence;
+}
+
+const char* const HtmlStartTag = "<html";
+
+Sequence<sal_Int8> HTMLFormatToTextHtml(const Sequence<sal_Int8>& aHTMLFormat)
+{
+    assert(isHTMLFormat(aHTMLFormat) && "No HTML Format provided");
+
+    Sequence<sal_Int8>& nonconstHTMLFormatRef = const_cast<Sequence<sal_Int8>&>(aHTMLFormat);
+    char* dataStart = reinterpret_cast<char*>(nonconstHTMLFormatRef.getArray());
+    char* dataEnd = dataStart + nonconstHTMLFormatRef.getLength() - 1;
+    const char* htmlStartTag = strcasestr(dataStart, HtmlStartTag);
+
+    assert(htmlStartTag && "Seems to be no HTML at all");
+
+    // It doesn't seem to be HTML? Well then simply return what has been
+    // provided in non-debug builds
+    if (htmlStartTag == nullptr)
+    {
+        return aHTMLFormat;
+    }
+
+    sal_Int32 len = dataEnd - htmlStartTag;
+    Sequence<sal_Int8> plainHtmlData(len);
+
+    memcpy(static_cast<void*>(plainHtmlData.getArray()), htmlStartTag, len);
+
+    return plainHtmlData;
+}
+
+/* A simple format detection. We are just comparing the first few bytes
+   of the provided byte sequence to see whether or not it is the MS
+   Office Html format. If it shows that this is not reliable enough we
+   can improve this
+*/
+const char HtmlFormatStart[] = "Version:";
+int const HtmlFormatStartLen = (sizeof(HtmlFormatStart) - 1);
+
+bool isHTMLFormat(const Sequence<sal_Int8>& aHtmlSequence)
+{
+    if (aHtmlSequence.getLength() < HtmlFormatStartLen)
+        return false;
+
+    return rtl_str_compareIgnoreAsciiCase_WithLength(
+               HtmlFormatStart, HtmlFormatStartLen,
+               reinterpret_cast<const char*>(aHtmlSequence.getConstArray()), HtmlFormatStartLen)
+           == 0;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/HtmlFmtFlt.hxx b/vcl/ios/HtmlFmtFlt.hxx
new file mode 100644
index 000000000..6a2cd6f64
--- /dev/null
+++ b/vcl/ios/HtmlFmtFlt.hxx
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/uno/Sequence.hxx>
+
+/* Transform plain HTML into the format expected by MS Office.
+ */
+css::uno::Sequence<sal_Int8> TextHtmlToHTMLFormat(css::uno::Sequence<sal_Int8> const& aTextHtml);
+
+/* Transform the MS Office HTML format into plain HTML.
+ */
+css::uno::Sequence<sal_Int8> HTMLFormatToTextHtml(const css::uno::Sequence<sal_Int8>& aHTMLFormat);
+
+/* Detects whether the given byte sequence contains the MS Office Html format.
+
+   @returns True if the MS Office Html format will be detected False otherwise.
+ */
+bool isHTMLFormat(const css::uno::Sequence<sal_Int8>& aHtmlSequence);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/clipboard.cxx b/vcl/ios/clipboard.cxx
new file mode 100644
index 000000000..46dfa92bf
--- /dev/null
+++ b/vcl/ios/clipboard.cxx
@@ -0,0 +1,183 @@
+/* -*- Mode: ObjC; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "ios/iosinst.hxx"
+
+#include "clipboard.hxx"
+
+#include "DataFlavorMapping.hxx"
+#include "iOSTransferable.hxx"
+#include <com/sun/star/datatransfer/MimeContentTypeFactory.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <comphelper/processfactory.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+iOSClipboard::iOSClipboard()
+    : WeakComponentImplHelper<XSystemClipboard, XServiceInfo>(m_aMutex)
+{
+    auto xContext = comphelper::getProcessComponentContext();
+
+    mrXMimeCntFactory = css::datatransfer::MimeContentTypeFactory::create(xContext);
+
+    mpDataFlavorMapper.reset(new DataFlavorMapper());
+}
+
+iOSClipboard::~iOSClipboard() {}
+
+css::uno::Reference<css::datatransfer::XTransferable> SAL_CALL iOSClipboard::getContents()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    return css::uno::Reference<css::datatransfer::XTransferable>(
+        new iOSTransferable(mrXMimeCntFactory, mpDataFlavorMapper));
+}
+
+void SAL_CALL iOSClipboard::setContents(
+    const css::uno::Reference<css::datatransfer::XTransferable>& xTransferable,
+    const css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner>& /*xClipboardOwner*/)
+{
+    NSArray* types = xTransferable.is() ? mpDataFlavorMapper->flavorSequenceToTypesArray(
+                                              xTransferable->getTransferDataFlavors())
+                                        : [NSArray array];
+
+    osl::ClearableMutexGuard aGuard(m_aMutex);
+
+    NSMutableDictionary* dict = [NSMutableDictionary dictionaryWithCapacity:1];
+    NSArray* array = @[ dict ];
+
+    for (sal_uInt32 i = 0; i < [types count]; ++i)
+    {
+        DataProviderPtr_t dp = mpDataFlavorMapper->getDataProvider(types[i], xTransferable);
+
+        if (dp.get() != nullptr)
+        {
+            NSData* pBoardData = (NSData*)dp->getSystemData();
+            dict[types[i]] = pBoardData;
+        }
+    }
+    SAL_INFO("vcl.ios.clipboard", "Setting pasteboard items: " << NSDictionaryKeysToOUString(dict));
+    [[UIPasteboard generalPasteboard] setItems:array options:@{}];
+
+    // We don't keep a copy of the clipboard contents around in-process, so fire the lost clipboard
+    // ownership event right away.
+    // fireLostClipboardOwnershipEvent(xClipboardOwner, xTransferable);
+
+    // fireClipboardChangedEvent(xTransferable);
+}
+
+OUString SAL_CALL iOSClipboard::getName() { return OUString(); }
+
+sal_Int8 SAL_CALL iOSClipboard::getRenderingCapabilities() { return 0; }
+
+void SAL_CALL iOSClipboard::addClipboardListener(
+    const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    if (!listener.is())
+        throw css::lang::IllegalArgumentException(
+            "empty reference", static_cast<css::datatransfer::clipboard::XClipboardEx*>(this), 1);
+
+    mClipboardListeners.push_back(listener);
+}
+
+void SAL_CALL iOSClipboard::removeClipboardListener(
+    const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    if (!listener.is())
+        throw css::lang::IllegalArgumentException(
+            "empty reference", static_cast<css::datatransfer::clipboard::XClipboardEx*>(this), 1);
+
+    mClipboardListeners.remove(listener);
+}
+
+void iOSClipboard::fireClipboardChangedEvent(
+    css::uno::Reference<css::datatransfer::XTransferable> xNewContents)
+{
+    osl::ClearableMutexGuard aGuard(m_aMutex);
+
+    std::list<css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>> listeners(
+        mClipboardListeners);
+    css::datatransfer::clipboard::ClipboardEvent aEvent;
+
+    if (!listeners.empty())
+    {
+        aEvent = css::datatransfer::clipboard::ClipboardEvent(static_cast<OWeakObject*>(this),
+                                                              xNewContents);
+    }
+
+    aGuard.clear();
+
+    while (!listeners.empty())
+    {
+        if (listeners.front().is())
+        {
+            try
+            {
+                listeners.front()->changedContents(aEvent);
+            }
+            catch (const css::uno::RuntimeException&)
+            {
+            }
+        }
+        listeners.pop_front();
+    }
+}
+
+void iOSClipboard::fireLostClipboardOwnershipEvent(
+    css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner> const& oldOwner,
+    css::uno::Reference<css::datatransfer::XTransferable> const& oldContent)
+{
+    assert(oldOwner.is());
+
+    try
+    {
+        oldOwner->lostOwnership(static_cast<css::datatransfer::clipboard::XClipboardEx*>(this),
+                                oldContent);
+    }
+    catch (const css::uno::RuntimeException&)
+    {
+    }
+}
+
+OUString SAL_CALL iOSClipboard::getImplementationName()
+{
+    return OUString("com.sun.star.datatransfer.clipboard.iOSClipboard");
+}
+
+sal_Bool SAL_CALL iOSClipboard::supportsService(const OUString& ServiceName)
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+css::uno::Sequence<OUString> SAL_CALL iOSClipboard::getSupportedServiceNames()
+{
+    return { OUString("com.sun.star.datatransfer.clipboard.SystemClipboard") };
+}
+
+css::uno::Reference<css::uno::XInterface>
+IosSalInstance::CreateClipboard(const css::uno::Sequence<css::uno::Any>&)
+{
+    return css::uno::Reference<css::uno::XInterface>(
+        static_cast<cppu::OWeakObject*>(new iOSClipboard()));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/clipboard.hxx b/vcl/ios/clipboard.hxx
new file mode 100644
index 000000000..086840912
--- /dev/null
+++ b/vcl/ios/clipboard.hxx
@@ -0,0 +1,107 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include "DataFlavorMapping.hxx"
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+#include <cppuhelper/compbase.hxx>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardEx.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardListener.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>
+#include <com/sun/star/datatransfer/clipboard/XSystemClipboard.hpp>
+#include <com/sun/star/datatransfer/XMimeContentTypeFactory.hpp>
+#include <com/sun/star/datatransfer/clipboard/XFlushableClipboard.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <cppuhelper/basemutex.hxx>
+#include <com/sun/star/lang/XMultiComponentFactory.hpp>
+
+#include <list>
+
+#include <premac.h>
+#import <UIKit/UIKit.h>
+#include <postmac.h>
+
+class iOSClipboard
+    : public ::cppu::BaseMutex,
+      public ::cppu::WeakComponentImplHelper<css::datatransfer::clipboard::XSystemClipboard,
+                                             css::lang::XServiceInfo>
+{
+public:
+    iOSClipboard();
+
+    virtual ~iOSClipboard() override;
+    iOSClipboard(const iOSClipboard&) = delete;
+    iOSClipboard& operator=(const iOSClipboard&) = delete;
+
+    // XClipboard
+
+    css::uno::Reference<css::datatransfer::XTransferable> SAL_CALL getContents() override;
+
+    void SAL_CALL setContents(
+        const css::uno::Reference<css::datatransfer::XTransferable>& xTransferable,
+        const css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner>& xClipboardOwner)
+        override;
+
+    OUString SAL_CALL getName() override;
+
+    // XClipboardEx
+
+    sal_Int8 SAL_CALL getRenderingCapabilities() override;
+
+    // XClipboardNotifier
+
+    void SAL_CALL addClipboardListener(
+        const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
+        override;
+
+    void SAL_CALL removeClipboardListener(
+        const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
+        override;
+
+    // XServiceInfo
+
+    OUString SAL_CALL getImplementationName() override;
+
+    sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+
+    css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
+
+private:
+    /* Notify the current clipboard owner that he is no longer the clipboard owner. */
+    void fireLostClipboardOwnershipEvent(
+        css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner> const& oldOwner,
+        css::uno::Reference<css::datatransfer::XTransferable> const& oldContent);
+
+    /* Notify all registered XClipboardListener that the clipboard content has changed. */
+    void
+    fireClipboardChangedEvent(css::uno::Reference<css::datatransfer::XTransferable> xNewContents);
+
+private:
+    css::uno::Reference<css::datatransfer::XMimeContentTypeFactory> mrXMimeCntFactory;
+    std::list<css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>>
+        mClipboardListeners;
+    css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner> mXClipboardOwner;
+    std::shared_ptr<DataFlavorMapper> mpDataFlavorMapper;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/dummies.cxx b/vcl/ios/dummies.cxx
new file mode 100644
index 000000000..9e03f598f
--- /dev/null
+++ b/vcl/ios/dummies.cxx
@@ -0,0 +1,120 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#include <vcl/svapp.hxx>
+#include "salprn.hxx"
+#include "quartz/salgdi.h"
+#include "headless/svpinst.hxx"
+#include "unx/fontmanager.hxx"
+#include "unx/gendata.hxx"
+
+std::unique_ptr<SalPrinter> SvpSalInstance::CreatePrinter( SalInfoPrinter* /* pInfoPrinter */ )
+{
+    return nullptr;
+}
+
+OUString SvpSalInstance::GetDefaultPrinter()
+{
+    return OUString();
+}
+
+std::unique_ptr<GenPspGraphics> SvpSalInstance::CreatePrintGraphics()
+{
+    return nullptr;
+}
+
+void SvpSalInstance::PostPrintersChanged()
+{
+}
+
+SalInfoPrinter* SvpSalInstance::CreateInfoPrinter( SalPrinterQueueInfo* /* pQueueInfo */,
+                                                   ImplJobSetup*        /* pJobSetup */ )
+{
+    return NULL;
+}
+
+void SvpSalInstance::DestroyInfoPrinter( SalInfoPrinter* pPrinter )
+{
+    delete pPrinter;
+}
+
+void SvpSalInstance::GetPrinterQueueInfo( ImplPrnQueueList* /* pList */ )
+{
+}
+
+void SvpSalInstance::GetPrinterQueueState( SalPrinterQueueInfo* /* pInfo */ )
+{
+}
+
+std::unique_ptr<SalPrinter> SalGenericInstance::CreatePrinter( SalInfoPrinter* /* pInfoPrinter */ )
+{
+    return nullptr;
+}
+
+OUString SalGenericInstance::GetDefaultPrinter()
+{
+    return OUString();
+}
+
+void SalGenericInstance::PostPrintersChanged()
+{
+}
+
+SalInfoPrinter* SalGenericInstance::CreateInfoPrinter( SalPrinterQueueInfo* /* pQueueInfo */,
+                                                       ImplJobSetup*        /* pJobSetup */ )
+{
+    return NULL;
+}
+
+void SalGenericInstance::DestroyInfoPrinter( SalInfoPrinter* pPrinter )
+{
+    delete pPrinter;
+}
+
+void SalGenericInstance::GetPrinterQueueInfo( ImplPrnQueueList* /* pList */ )
+{
+}
+
+void SalGenericInstance::GetPrinterQueueState( SalPrinterQueueInfo* /* pInfo */ )
+{
+}
+
+void SalGenericInstance::updatePrinterUpdate()
+{
+}
+
+void SalGenericInstance::jobStartedPrinterUpdate()
+{
+}
+
+void SalGenericInstance::jobEndedPrinterUpdate()
+{
+}
+
+using namespace psp;
+
+bool AquaGraphicsBackend::drawNativeControl(ControlType /* nType */,
+                                            ControlPart /* nPart */,
+                                            const tools::Rectangle & /* rControlRegion */,
+                                            ControlState /* nState */,
+                                            const ImplControlValue & /* aValue */)
+{
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/iOSTransferable.cxx b/vcl/ios/iOSTransferable.cxx
new file mode 100644
index 000000000..ece771e7f
--- /dev/null
+++ b/vcl/ios/iOSTransferable.cxx
@@ -0,0 +1,174 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <com/sun/star/datatransfer/UnsupportedFlavorException.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <sal/log.hxx>
+#include <sal/types.h>
+#include <osl/diagnose.h>
+
+#include <quartz/utils.h>
+
+#include "iOSTransferable.hxx"
+
+#include "DataFlavorMapping.hxx"
+
+using namespace osl;
+using namespace cppu;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::lang;
+
+namespace
+{
+bool isValidFlavor(const DataFlavor& aFlavor)
+{
+    size_t len = aFlavor.MimeType.getLength();
+    Type dtype = aFlavor.DataType;
+    return ((len > 0)
+            && ((dtype == cppu::UnoType<Sequence<sal_Int8>>::get())
+                || (dtype == cppu::UnoType<OUString>::get())));
+}
+
+bool cmpAllContentTypeParameter(const Reference<XMimeContentType>& xLhs,
+                                const Reference<XMimeContentType>& xRhs)
+{
+    Sequence<OUString> xLhsFlavors = xLhs->getParameters();
+    Sequence<OUString> xRhsFlavors = xRhs->getParameters();
+
+    // Stop here if the number of parameters is different already
+    if (xLhsFlavors.getLength() != xRhsFlavors.getLength())
+        return false;
+
+    try
+    {
+        OUString pLhs;
+        OUString pRhs;
+
+        for (sal_Int32 i = 0; i < xLhsFlavors.getLength(); i++)
+        {
+            pLhs = xLhs->getParameterValue(xLhsFlavors[i]);
+            pRhs = xRhs->getParameterValue(xLhsFlavors[i]);
+
+            if (!pLhs.equalsIgnoreAsciiCase(pRhs))
+            {
+                return false;
+            }
+        }
+    }
+    catch (IllegalArgumentException&)
+    {
+        return false;
+    }
+
+    return true;
+}
+
+} // unnamed namespace
+
+iOSTransferable::iOSTransferable(const Reference<XMimeContentTypeFactory>& rXMimeCntFactory,
+                                 std::shared_ptr<DataFlavorMapper> pDataFlavorMapper)
+    : mrXMimeCntFactory(rXMimeCntFactory)
+    , mDataFlavorMapper(pDataFlavorMapper)
+{
+    initClipboardItemList();
+}
+
+iOSTransferable::~iOSTransferable() {}
+
+Any SAL_CALL iOSTransferable::getTransferData(const DataFlavor& aFlavor)
+{
+    if (!isValidFlavor(aFlavor) || !isDataFlavorSupported(aFlavor))
+    {
+        throw UnsupportedFlavorException("Unsupported data flavor",
+                                         static_cast<XTransferable*>(this));
+    }
+
+    bool bInternal(false);
+    NSString* sysFormat = (aFlavor.MimeType.startsWith("image/png"))
+                              ? DataFlavorMapper::openOfficeImageToSystemFlavor()
+                              : mDataFlavorMapper->openOfficeToSystemFlavor(aFlavor, bInternal);
+    DataProviderPtr_t dp;
+
+    NSData* sysData = [[UIPasteboard generalPasteboard] dataForPasteboardType:sysFormat];
+    dp = DataFlavorMapper::getDataProvider(sysFormat, sysData);
+
+    if (dp.get() == nullptr)
+    {
+        throw UnsupportedFlavorException("Unsupported data flavor",
+                                         static_cast<XTransferable*>(this));
+    }
+
+    return dp->getOOoData();
+}
+
+Sequence<DataFlavor> SAL_CALL iOSTransferable::getTransferDataFlavors() { return mFlavorList; }
+
+sal_Bool SAL_CALL iOSTransferable::isDataFlavorSupported(const DataFlavor& aFlavor)
+{
+    for (sal_Int32 i = 0; i < mFlavorList.getLength(); i++)
+        if (compareDataFlavors(aFlavor, mFlavorList[i]))
+            return true;
+
+    return false;
+}
+
+void iOSTransferable::initClipboardItemList()
+{
+    NSArray* pboardFormats = [[UIPasteboard generalPasteboard] pasteboardTypes];
+
+    if (pboardFormats == nullptr)
+    {
+        throw RuntimeException("Cannot get clipboard data", static_cast<XTransferable*>(this));
+    }
+
+    SAL_INFO("vcl.ios.clipboard", "Types on clipboard: " << NSStringArrayToOUString(pboardFormats));
+
+    mFlavorList = mDataFlavorMapper->typesArrayToFlavorSequence(pboardFormats);
+}
+
+/* Compares two DataFlavors. Returns true if both DataFlavor have the same media type
+   and the number of parameter and all parameter values do match otherwise false
+   is returned.
+ */
+bool iOSTransferable::compareDataFlavors(const DataFlavor& lhs, const DataFlavor& rhs)
+{
+    try
+    {
+        Reference<XMimeContentType> xLhs(mrXMimeCntFactory->createMimeContentType(lhs.MimeType));
+        Reference<XMimeContentType> xRhs(mrXMimeCntFactory->createMimeContentType(rhs.MimeType));
+
+        if (!xLhs->getFullMediaType().equalsIgnoreAsciiCase(xRhs->getFullMediaType())
+            || !cmpAllContentTypeParameter(xLhs, xRhs))
+        {
+            return false;
+        }
+    }
+    catch (IllegalArgumentException&)
+    {
+        OSL_FAIL("Invalid content type detected");
+        return false;
+    }
+
+    return true;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/iOSTransferable.hxx b/vcl/ios/iOSTransferable.hxx
new file mode 100644
index 000000000..91f4e440e
--- /dev/null
+++ b/vcl/ios/iOSTransferable.hxx
@@ -0,0 +1,69 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <com/sun/star/datatransfer/XMimeContentTypeFactory.hpp>
+#include <com/sun/star/datatransfer/XMimeContentType.hpp>
+
+#include "DataFlavorMapping.hxx"
+
+#include <premac.h>
+#import <UIKit/UIKit.h>
+#include <postmac.h>
+
+#include <memory>
+#include <vector>
+
+class iOSTransferable : public ::cppu::WeakImplHelper<css::datatransfer::XTransferable>
+{
+public:
+    explicit iOSTransferable(
+        css::uno::Reference<css::datatransfer::XMimeContentTypeFactory> const& rXMimeCntFactory,
+        std::shared_ptr<DataFlavorMapper> pDataFlavorMapper);
+
+    virtual ~iOSTransferable() override;
+    iOSTransferable(const iOSTransferable&) = delete;
+    iOSTransferable& operator=(const iOSTransferable&) = delete;
+
+    // XTransferable
+
+    virtual css::uno::Any SAL_CALL
+    getTransferData(const css::datatransfer::DataFlavor& aFlavor) override;
+
+    css::uno::Sequence<css::datatransfer::DataFlavor> SAL_CALL getTransferDataFlavors() override;
+
+    sal_Bool SAL_CALL isDataFlavorSupported(const css::datatransfer::DataFlavor& aFlavor) override;
+
+    // Helper functions not part of the XTransferable interface
+
+    void initClipboardItemList();
+
+    bool compareDataFlavors(const css::datatransfer::DataFlavor& lhs,
+                            const css::datatransfer::DataFlavor& rhs);
+
+private:
+    css::uno::Sequence<css::datatransfer::DataFlavor> mFlavorList;
+    css::uno::Reference<css::datatransfer::XMimeContentTypeFactory> mrXMimeCntFactory;
+    std::shared_ptr<DataFlavorMapper> mDataFlavorMapper;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/iosinst.cxx b/vcl/ios/iosinst.cxx
new file mode 100644
index 000000000..a9fa27e5e
--- /dev/null
+++ b/vcl/ios/iosinst.cxx
@@ -0,0 +1,165 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <premac.h>
+#include <UIKit/UIKit.h>
+#include <postmac.h>
+
+#include "ios/iosinst.hxx"
+#include "headless/svpdummies.hxx"
+#include <osx/saldata.hxx>
+#include "quartz/utils.h"
+#include <vcl/layout.hxx>
+#include <vcl/settings.hxx>
+
+// Totally wrong of course but doesn't seem to harm much in the iOS app.
+static int viewWidth = 1, viewHeight = 1;
+
+void IosSalInstance::GetWorkArea( tools::Rectangle& rRect )
+{
+    rRect = tools::Rectangle( Point( 0, 0 ),
+                       Size( viewWidth, viewHeight ) );
+}
+
+IosSalInstance *IosSalInstance::getInstance()
+{
+    if (!ImplGetSVData())
+        return NULL;
+    return static_cast<IosSalInstance *>(GetSalInstance());
+}
+
+IosSalInstance::IosSalInstance( std::unique_ptr<SalYieldMutex> pMutex )
+    : SvpSalInstance( std::move(pMutex) )
+{
+}
+
+IosSalInstance::~IosSalInstance()
+{
+}
+
+class IosSalSystem : public SvpSalSystem {
+public:
+    IosSalSystem() : SvpSalSystem() {}
+    virtual ~IosSalSystem() {}
+    virtual int ShowNativeDialog( const OUString& rTitle,
+                                  const OUString& rMessage,
+                                  const std::vector< OUString >& rButtons );
+};
+
+SalSystem *IosSalInstance::CreateSalSystem()
+{
+    return new IosSalSystem();
+}
+
+class IosSalFrame : public SvpSalFrame
+{
+public:
+    IosSalFrame( IosSalInstance *pInstance,
+                     SalFrame           *pParent,
+                     SalFrameStyleFlags  nSalFrameStyle)
+        : SvpSalFrame( pInstance, pParent, nSalFrameStyle )
+    {
+        if (pParent == NULL && viewWidth > 1 && viewHeight > 1)
+            SetPosSize(0, 0, viewWidth, viewHeight, SAL_FRAME_POSSIZE_WIDTH | SAL_FRAME_POSSIZE_HEIGHT);
+    }
+
+    virtual void GetWorkArea( tools::Rectangle& rRect ) override
+    {
+        IosSalInstance::getInstance()->GetWorkArea( rRect );
+    }
+
+    virtual void ShowFullScreen( bool, sal_Int32 ) override
+    {
+        SetPosSize( 0, 0, viewWidth, viewHeight,
+                    SAL_FRAME_POSSIZE_WIDTH | SAL_FRAME_POSSIZE_HEIGHT );
+    }
+
+    virtual void UpdateSettings( AllSettings &rSettings ) override
+    {
+        // Clobber the UI fonts
+        vcl::Font aFont( "Helvetica", Size( 0, 10 ) );
+
+        StyleSettings aStyleSet = rSettings.GetStyleSettings();
+        aStyleSet.SetAppFont( aFont );
+        aStyleSet.SetHelpFont( aFont );
+        aStyleSet.SetMenuFont( aFont );
+        aStyleSet.SetToolFont( aFont );
+        aStyleSet.SetLabelFont( aFont );
+        aStyleSet.SetRadioCheckFont( aFont );
+        aStyleSet.SetPushButtonFont( aFont );
+        aStyleSet.SetFieldFont( aFont );
+        aStyleSet.SetIconFont( aFont );
+        aStyleSet.SetTabFont( aFont );
+        aStyleSet.SetGroupFont( aFont );
+
+        Color aBackgroundColor( 0xff, 0xff, 0xff );
+        aStyleSet.BatchSetBackgrounds( aBackgroundColor, false );
+        aStyleSet.SetMenuColor( aBackgroundColor );
+        aStyleSet.SetMenuBarColor( aBackgroundColor );
+        aStyleSet.SetDialogColor( aBackgroundColor );
+
+        rSettings.SetStyleSettings( aStyleSet );
+    }
+};
+
+SalFrame *IosSalInstance::CreateChildFrame( SystemParentData* pParent, SalFrameStyleFlags nStyle )
+{
+    pParent = NULL;
+    return new IosSalFrame( this, NULL, nStyle );
+}
+
+SalFrame *IosSalInstance::CreateFrame( SalFrame* pParent, SalFrameStyleFlags nStyle )
+{
+    return new IosSalFrame( this, pParent, nStyle );
+}
+
+SalData::SalData() :
+    mpFontList( 0 ),
+    mxRGBSpace( CGColorSpaceCreateDeviceRGB() ),
+    mxGraySpace( CGColorSpaceCreateDeviceGray() )
+{
+}
+
+SalData::~SalData()
+{
+    CGColorSpaceRelease(mxRGBSpace);
+    CGColorSpaceRelease(mxGraySpace);
+}
+
+void SalData::ensureThreadAutoreleasePool() {}
+
+extern "C" SalInstance *create_SalInstance()
+{
+    IosSalInstance* pInstance = new IosSalInstance( std::make_unique<SvpSalYieldMutex>() );
+    new SvpSalData(pInstance);
+    return pInstance;
+}
+
+int IosSalSystem::ShowNativeDialog( const OUString& rTitle,
+                                    const OUString& rMessage,
+                                    const std::vector< OUString >& rButtons )
+{
+    (void)rButtons;
+
+    NSLog(@"%@: %@", CreateNSString(rTitle), CreateNSString(rMessage));
+
+    return 0;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/ios/salios.cxx b/vcl/ios/salios.cxx
new file mode 100644
index 000000000..52e94b109
--- /dev/null
+++ b/vcl/ios/salios.cxx
@@ -0,0 +1,584 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+// This file contains the iOS-specific versions of the functions which were touched in the commit to
+// fix tdf#138122. The functions are here (for now) as they were before that commit. The
+// macOS-specific versions of these functions are in vcl/osx/salmacos.cxx.
+
+#include <sal/config.h>
+#include <sal/log.hxx>
+#include <osl/diagnose.h>
+
+#include <vcl/bitmap.hxx>
+
+#include <quartz/salbmp.h>
+#include <quartz/salgdi.h>
+#include <quartz/salvd.h>
+#include <quartz/utils.h>
+
+#include <svdata.hxx>
+
+// From salbmp.cxx
+
+bool QuartzSalBitmap::Create(CGLayerHolder const & rLayerHolder, int nBitmapBits, int nX, int nY, int nWidth, int nHeight, bool bFlipped)
+{
+    SAL_WARN_IF(!rLayerHolder.isSet(), "vcl", "QuartzSalBitmap::Create() from non-layered context");
+
+    // sanitize input parameters
+    if( nX < 0 ) {
+        nWidth += nX;
+        nX = 0;
+    }
+
+    if( nY < 0 ) {
+        nHeight += nY;
+        nY = 0;
+    }
+
+    const CGSize aLayerSize = CGLayerGetSize(rLayerHolder.get());
+
+    if( nWidth >= static_cast<int>(aLayerSize.width) - nX )
+        nWidth = static_cast<int>(aLayerSize.width) - nX;
+
+    if( nHeight >= static_cast<int>(aLayerSize.height) - nY )
+        nHeight = static_cast<int>(aLayerSize.height) - nY;
+
+    if( (nWidth < 0) || (nHeight < 0) )
+        nWidth = nHeight = 0;
+
+    // initialize properties
+    mnWidth  = nWidth;
+    mnHeight = nHeight;
+    mnBits   = nBitmapBits ? nBitmapBits : 32;
+
+    // initialize drawing context
+    CreateContext();
+
+    // copy layer content into the bitmap buffer
+    const CGPoint aSrcPoint = { static_cast<CGFloat>(-nX), static_cast<CGFloat>(-nY) };
+    if (maGraphicContext.isSet()) // remove warning
+    {
+        if( bFlipped )
+        {
+            CGContextTranslateCTM( maGraphicContext.get(), 0, +mnHeight );
+
+            CGContextScaleCTM( maGraphicContext.get(), +1, -1 );
+        }
+
+        CGContextDrawLayerAtPoint(maGraphicContext.get(), aSrcPoint, rLayerHolder.get());
+    }
+    return true;
+}
+
+// From salgdicommon.cxx
+
+void AquaGraphicsBackend::copyBits(const SalTwoRect& rPosAry, SalGraphics *pSrcGraphics)
+{
+    //from unix salgdi2.cxx
+    //[FIXME] find a better way to prevent calc from crashing when width and height are negative
+    if( rPosAry.mnSrcWidth <= 0 ||
+        rPosAry.mnSrcHeight <= 0 ||
+        rPosAry.mnDestWidth <= 0 ||
+        rPosAry.mnDestHeight <= 0 )
+    {
+        return;
+    }
+
+    // If called from idle layout, maContextHolder.get() is NULL, no idea what to do
+    if (!mrShared.maContextHolder.isSet())
+        return;
+
+    AquaSharedAttributes* pSrcShared = nullptr;
+
+    if (pSrcGraphics)
+    {
+        AquaSalGraphics* pSrc = static_cast<AquaSalGraphics*>(pSrcGraphics);
+        pSrcShared = &pSrc->getAquaGraphicsBackend()->GetShared();
+    }
+    else
+        pSrcShared = &mrShared;
+
+    // accelerate trivial operations
+    const bool bSameGraphics = (pSrcShared == &mrShared);
+
+    if( bSameGraphics &&
+        (rPosAry.mnSrcWidth == rPosAry.mnDestWidth) &&
+        (rPosAry.mnSrcHeight == rPosAry.mnDestHeight))
+    {
+        // short circuit if there is nothing to do
+        if( (rPosAry.mnSrcX == rPosAry.mnDestX) &&
+            (rPosAry.mnSrcY == rPosAry.mnDestY))
+        {
+            return;
+        }
+        // use copyArea() if source and destination context are identical
+        copyArea( rPosAry.mnDestX, rPosAry.mnDestY, rPosAry.mnSrcX, rPosAry.mnSrcY,
+                  rPosAry.mnSrcWidth, rPosAry.mnSrcHeight, false/*bWindowInvalidate*/ );
+        return;
+    }
+
+    mrShared.applyXorContext();
+    if (!bSameGraphics)
+        pSrcShared->applyXorContext();
+
+    SAL_WARN_IF (!pSrcShared->maLayer.isSet(), "vcl.quartz",
+                 "AquaSalGraphics::copyBits() from non-layered graphics this=" << this);
+
+    const CGPoint aDstPoint = CGPointMake(+rPosAry.mnDestX - rPosAry.mnSrcX, rPosAry.mnDestY - rPosAry.mnSrcY);
+    if ((rPosAry.mnSrcWidth == rPosAry.mnDestWidth &&
+         rPosAry.mnSrcHeight == rPosAry.mnDestHeight) &&
+        (!mrShared.mnBitmapDepth || (aDstPoint.x + pSrcShared->mnWidth) <= mrShared.mnWidth)
+        && pSrcShared->maLayer.isSet()) // workaround for a Quartz crash
+    {
+        // in XOR mode the drawing context is redirected to the XOR mask
+        // if source and target are identical then copyBits() paints onto the target context though
+        CGContextHolder aCopyContext = mrShared.maContextHolder;
+        if (mrShared.mpXorEmulation && mrShared.mpXorEmulation->IsEnabled())
+        {
+            if (bSameGraphics)
+            {
+                aCopyContext.set(mrShared.mpXorEmulation->GetTargetContext());
+            }
+        }
+        aCopyContext.saveState();
+
+        const CGRect aDstRect = CGRectMake(rPosAry.mnDestX, rPosAry.mnDestY, rPosAry.mnDestWidth, rPosAry.mnDestHeight);
+        CGContextClipToRect(aCopyContext.get(), aDstRect);
+
+        // draw at new destination
+        // NOTE: flipped drawing gets disabled for this, else the subimage would be drawn upside down
+        if (pSrcShared->isFlipped())
+        {
+            CGContextTranslateCTM(aCopyContext.get(), 0, +mrShared.mnHeight);
+            CGContextScaleCTM(aCopyContext.get(), +1, -1);
+        }
+
+        // TODO: pSrc->size() != this->size()
+        CGContextDrawLayerAtPoint(aCopyContext.get(), aDstPoint, pSrcShared->maLayer.get());
+
+        aCopyContext.restoreState();
+        // mark the destination rectangle as updated
+        refreshRect(aDstRect);
+    }
+    else
+    {
+        std::shared_ptr<SalBitmap> pBitmap;
+        if (pSrcGraphics)
+            pBitmap = pSrcGraphics->GetImpl()->getBitmap(rPosAry.mnSrcX, rPosAry.mnSrcY, rPosAry.mnSrcWidth, rPosAry.mnSrcHeight);
+        else
+            pBitmap = getBitmap(rPosAry.mnSrcX, rPosAry.mnSrcY, rPosAry.mnSrcWidth, rPosAry.mnSrcHeight);
+
+        if (pBitmap)
+        {
+            SalTwoRect aPosAry( rPosAry );
+            aPosAry.mnSrcX = 0;
+            aPosAry.mnSrcY = 0;
+            drawBitmap(aPosAry, *pBitmap);
+        }
+    }
+}
+
+void AquaGraphicsBackend::copyArea(tools::Long nDstX, tools::Long nDstY,tools::Long nSrcX, tools::Long nSrcY,
+                               tools::Long nSrcWidth, tools::Long nSrcHeight, bool /*bWindowInvalidate*/)
+{
+    SAL_WARN_IF (!mrShared.maLayer.isSet(), "vcl.quartz",
+                 "AquaSalGraphics::copyArea() for non-layered graphics this=" << this);
+
+    if (!mrShared.maLayer.isSet())
+        return;
+
+    float fScale = mrShared.maLayer.getScale();
+
+    tools::Long nScaledSourceX = nSrcX * fScale;
+    tools::Long nScaledSourceY = nSrcY * fScale;
+
+    tools::Long nScaledTargetX = nDstX * fScale;
+    tools::Long nScaledTargetY = nDstY * fScale;
+
+    tools::Long nScaledSourceWidth = nSrcWidth * fScale;
+    tools::Long nScaledSourceHeight = nSrcHeight * fScale;
+
+    mrShared.applyXorContext();
+
+    mrShared.maContextHolder.saveState();
+
+    // in XOR mode the drawing context is redirected to the XOR mask
+    // copyArea() always works on the target context though
+    CGContextRef xCopyContext = mrShared.maContextHolder.get();
+
+    if (mrShared.mpXorEmulation && mrShared.mpXorEmulation->IsEnabled())
+    {
+        xCopyContext = mrShared.mpXorEmulation->GetTargetContext();
+    }
+
+    // If we have a scaled layer, we need to revert the scaling or else
+    // it will interfere with the coordinate calculation
+    CGContextScaleCTM(xCopyContext, 1.0 / fScale, 1.0 / fScale);
+
+    // drawing a layer onto its own context causes trouble on OSX => copy it first
+    // TODO: is it possible to get rid of this unneeded copy more often?
+    //       e.g. on OSX>=10.5 only this situation causes problems:
+    //          mnBitmapDepth && (aDstPoint.x + pSrc->mnWidth) > mnWidth
+
+    CGLayerHolder sSourceLayerHolder(mrShared.maLayer);
+    {
+        const CGSize aSrcSize = CGSizeMake(nScaledSourceWidth, nScaledSourceHeight);
+        sSourceLayerHolder.set(CGLayerCreateWithContext(xCopyContext, aSrcSize, nullptr));
+
+        const CGContextRef xSrcContext = CGLayerGetContext(sSourceLayerHolder.get());
+
+        CGPoint aSrcPoint = CGPointMake(-nScaledSourceX, -nScaledSourceY);
+        if (mrShared.isFlipped())
+        {
+            CGContextTranslateCTM(xSrcContext, 0, +nScaledSourceHeight);
+            CGContextScaleCTM(xSrcContext, +1, -1);
+            aSrcPoint.y = (nScaledSourceY + nScaledSourceHeight) - (mrShared.mnHeight * fScale);
+        }
+        CGContextSetBlendMode(xSrcContext, kCGBlendModeCopy);
+
+        CGContextDrawLayerAtPoint(xSrcContext, aSrcPoint, mrShared.maLayer.get());
+    }
+
+    // draw at new destination
+    const CGRect aTargetRect = CGRectMake(nScaledTargetX, nScaledTargetY, nScaledSourceWidth, nScaledSourceHeight);
+    CGContextSetBlendMode(xCopyContext, kCGBlendModeCopy);
+    CGContextDrawLayerInRect(xCopyContext, aTargetRect, sSourceLayerHolder.get());
+
+    mrShared.maContextHolder.restoreState();
+
+    // cleanup
+    if (sSourceLayerHolder.get() != mrShared.maLayer.get())
+    {
+        CGLayerRelease(sSourceLayerHolder.get());
+    }
+
+    // mark the destination rectangle as updated
+    mrShared.refreshRect(nDstX, nDstY, nSrcWidth, nSrcHeight);
+}
+
+void AquaSalGraphics::SetVirDevGraphics(SalVirtualDevice* pVirDev, CGLayerHolder const & rLayer, CGContextRef xContext,
+                                        int nBitmapDepth)
+{
+    SAL_INFO( "vcl.quartz", "SetVirDevGraphics() this=" << this << " layer=" << rLayer.get() << " context=" << xContext );
+
+    maShared.mbPrinter = false;
+    maShared.mbVirDev = true;
+
+    // set graphics properties
+    maShared.maLayer = rLayer;
+    maShared.maContextHolder.set(xContext);
+
+    maShared.mnBitmapDepth = nBitmapDepth;
+
+    maShared.mbForeignContext = xContext != NULL;
+
+    mpBackend->UpdateGeometryProvider(pVirDev);
+
+    // return early if the virdev is being destroyed
+    if (!xContext)
+        return;
+
+    // get new graphics properties
+    if (!maShared.maLayer.isSet())
+    {
+        maShared.mnWidth = CGBitmapContextGetWidth(maShared.maContextHolder.get());
+        maShared.mnHeight = CGBitmapContextGetHeight(maShared.maContextHolder.get());
+    }
+    else
+    {
+        const CGSize aSize = CGLayerGetSize(maShared.maLayer.get());
+        maShared.mnWidth = static_cast<int>(aSize.width);
+        maShared.mnHeight = static_cast<int>(aSize.height);
+    }
+
+    // prepare graphics for drawing
+    const CGColorSpaceRef aCGColorSpace = GetSalData()->mxRGBSpace;
+    CGContextSetFillColorSpace(maShared.maContextHolder.get(), aCGColorSpace);
+    CGContextSetStrokeColorSpace(maShared.maContextHolder.get(), aCGColorSpace);
+
+    // re-enable XorEmulation for the new context
+    if (maShared.mpXorEmulation)
+    {
+        maShared.mpXorEmulation->SetTarget(maShared.mnWidth, maShared.mnHeight, maShared.mnBitmapDepth, maShared.maContextHolder.get(), maShared.maLayer.get());
+        if (maShared.mpXorEmulation->IsEnabled())
+        {
+            maShared.maContextHolder.set(maShared.mpXorEmulation->GetMaskContext());
+        }
+    }
+
+    // initialize stack of CGContext states
+    maShared.maContextHolder.saveState();
+    maShared.setState();
+}
+
+void XorEmulation::SetTarget( int nWidth, int nHeight, int nTargetDepth,
+                              CGContextRef xTargetContext, CGLayerRef xTargetLayer )
+{
+    SAL_INFO( "vcl.quartz", "XorEmulation::SetTarget() this=" << this <<
+              " (" << nWidth << "x" << nHeight << ") depth=" << nTargetDepth <<
+              " context=" << xTargetContext << " layer=" << xTargetLayer );
+
+    // prepare to replace old mask+temp context
+    if( m_xMaskContext )
+    {
+        // cleanup the mask context
+        CGContextRelease( m_xMaskContext );
+        delete[] m_pMaskBuffer;
+        m_xMaskContext = nullptr;
+        m_pMaskBuffer = nullptr;
+
+        // cleanup the temp context if needed
+        if( m_xTempContext )
+        {
+            CGContextRelease( m_xTempContext );
+            delete[] m_pTempBuffer;
+            m_xTempContext = nullptr;
+            m_pTempBuffer = nullptr;
+        }
+    }
+
+    // return early if there is nothing more to do
+    if( !xTargetContext )
+    {
+        return;
+    }
+    // retarget drawing operations to the XOR mask
+    m_xTargetLayer = xTargetLayer;
+    m_xTargetContext = xTargetContext;
+
+    // prepare creation of matching CGBitmaps
+    CGColorSpaceRef aCGColorSpace = GetSalData()->mxRGBSpace;
+    CGBitmapInfo aCGBmpInfo = kCGImageAlphaNoneSkipFirst;
+    int nBitDepth = nTargetDepth;
+    if( !nBitDepth )
+    {
+        nBitDepth = 32;
+    }
+    int nBytesPerRow = 4;
+    const size_t nBitsPerComponent = (nBitDepth == 16) ? 5 : 8;
+    if( nBitDepth <= 8 )
+    {
+        aCGColorSpace = GetSalData()->mxGraySpace;
+        aCGBmpInfo = kCGImageAlphaNone;
+        nBytesPerRow = 1;
+    }
+    nBytesPerRow *= nWidth;
+    m_nBufferLongs = (nHeight * nBytesPerRow + sizeof(sal_uLong)-1) / sizeof(sal_uLong);
+
+    // create a XorMask context
+    m_pMaskBuffer = new sal_uLong[ m_nBufferLongs ];
+    m_xMaskContext = CGBitmapContextCreate( m_pMaskBuffer,
+                                            nWidth, nHeight,
+                                            nBitsPerComponent, nBytesPerRow,
+                                            aCGColorSpace, aCGBmpInfo );
+    SAL_WARN_IF( !m_xMaskContext, "vcl.quartz", "mask context creation failed" );
+
+    // reset the XOR mask to black
+    memset( m_pMaskBuffer, 0, m_nBufferLongs * sizeof(sal_uLong) );
+
+    // a bitmap context will be needed for manual XORing
+    // create one unless the target context is a bitmap context
+    if( nTargetDepth )
+    {
+        m_pTempBuffer = static_cast<sal_uLong*>(CGBitmapContextGetData( m_xTargetContext ));
+    }
+    if( !m_pTempBuffer )
+    {
+        // create a bitmap context matching to the target context
+        m_pTempBuffer = new sal_uLong[ m_nBufferLongs ];
+        m_xTempContext = CGBitmapContextCreate( m_pTempBuffer,
+                                                nWidth, nHeight,
+                                                nBitsPerComponent, nBytesPerRow,
+                                                aCGColorSpace, aCGBmpInfo );
+        SAL_WARN_IF( !m_xTempContext, "vcl.quartz", "temp context creation failed" );
+    }
+
+    // initialize XOR mask context for drawing
+    CGContextSetFillColorSpace( m_xMaskContext, aCGColorSpace );
+    CGContextSetStrokeColorSpace( m_xMaskContext, aCGColorSpace );
+    CGContextSetShouldAntialias( m_xMaskContext, false );
+
+    // improve the XorMask's XOR emulation a little
+    // NOTE: currently only enabled for monochrome contexts
+    if( aCGColorSpace == GetSalData()->mxGraySpace )
+    {
+        CGContextSetBlendMode( m_xMaskContext, kCGBlendModeDifference );
+    }
+    // initialize the transformation matrix to the drawing target
+    const CGAffineTransform aCTM = CGContextGetCTM( xTargetContext );
+    CGContextConcatCTM( m_xMaskContext, aCTM );
+    if( m_xTempContext )
+    {
+        CGContextConcatCTM( m_xTempContext, aCTM );
+    }
+    // initialize the default XorMask graphics state
+    CGContextSaveGState( m_xMaskContext );
+}
+
+bool XorEmulation::UpdateTarget()
+{
+    SAL_INFO( "vcl.quartz", "XorEmulation::UpdateTarget() this=" << this );
+
+    if( !IsEnabled() )
+    {
+        return false;
+    }
+    // update the temp bitmap buffer if needed
+    if( m_xTempContext )
+    {
+        SAL_WARN_IF( m_xTargetContext == nullptr, "vcl.quartz", "Target layer is NULL");
+        CGContextDrawLayerAtPoint( m_xTempContext, CGPointZero, m_xTargetLayer );
+    }
+    // do a manual XOR with the XorMask
+    // this approach suffices for simple color manipulations
+    // and also the complex-clipping-XOR-trick used in metafiles
+    const sal_uLong* pSrc = m_pMaskBuffer;
+    sal_uLong* pDst = m_pTempBuffer;
+    for( int i = m_nBufferLongs; --i >= 0;)
+    {
+        *(pDst++) ^= *(pSrc++);
+    }
+    // write back the XOR results to the target context
+    if( m_xTempContext )
+    {
+        CGImageRef xXorImage = CGBitmapContextCreateImage( m_xTempContext );
+        const int nWidth  = static_cast<int>(CGImageGetWidth( xXorImage ));
+        const int nHeight = static_cast<int>(CGImageGetHeight( xXorImage ));
+        // TODO: update minimal changerect
+        const CGRect aFullRect = CGRectMake(0, 0, nWidth, nHeight);
+        CGContextDrawImage( m_xTargetContext, aFullRect, xXorImage );
+        CGImageRelease( xXorImage );
+    }
+
+    // reset the XorMask to black again
+    // TODO: not needed for last update
+    memset( m_pMaskBuffer, 0, m_nBufferLongs * sizeof(sal_uLong) );
+
+    // TODO: return FALSE if target was not changed
+    return true;
+}
+
+/// From salvd.cxx
+
+void AquaSalVirtualDevice::Destroy()
+{
+    SAL_INFO( "vcl.virdev", "AquaSalVirtualDevice::Destroy() this=" << this << " mbForeignContext=" << mbForeignContext );
+
+    if( mbForeignContext )
+    {
+        // Do not delete mxContext that we have received from outside VCL
+        maLayer.set(nullptr);
+        return;
+    }
+
+    if (maLayer.isSet())
+    {
+        if( mpGraphics )
+        {
+            mpGraphics->SetVirDevGraphics(this, nullptr, nullptr);
+        }
+        CGLayerRelease(maLayer.get());
+        maLayer.set(nullptr);
+    }
+
+    if (maBitmapContext.isSet())
+    {
+        void* pRawData = CGBitmapContextGetData(maBitmapContext.get());
+        std::free(pRawData);
+        CGContextRelease(maBitmapContext.get());
+        maBitmapContext.set(nullptr);
+    }
+}
+
+bool AquaSalVirtualDevice::SetSize( tools::Long nDX, tools::Long nDY )
+{
+    SAL_INFO( "vcl.virdev", "AquaSalVirtualDevice::SetSize() this=" << this <<
+              " (" << nDX << "x" << nDY << ") mbForeignContext=" << (mbForeignContext ? "YES" : "NO"));
+
+    if( mbForeignContext )
+    {
+        // Do not delete/resize mxContext that we have received from outside VCL
+        return true;
+    }
+
+    if (maLayer.isSet())
+    {
+        const CGSize aSize = CGLayerGetSize(maLayer.get());
+        if( (nDX == aSize.width) && (nDY == aSize.height) )
+        {
+            // Yay, we do not have to do anything :)
+            return true;
+        }
+    }
+
+    Destroy();
+
+    mnWidth = nDX;
+    mnHeight = nDY;
+
+    // create a CGLayer matching to the intended virdev usage
+    CGContextHolder xCGContextHolder;
+    if( mnBitmapDepth && (mnBitmapDepth < 16) )
+    {
+        mnBitmapDepth = 8;  // TODO: are 1bit vdevs worth it?
+        const int nBytesPerRow = (mnBitmapDepth * nDX + 7) / 8;
+
+        void* pRawData = std::malloc( nBytesPerRow * nDY );
+        maBitmapContext.set(CGBitmapContextCreate( pRawData, nDX, nDY,
+                                                 mnBitmapDepth, nBytesPerRow,
+                                                 GetSalData()->mxGraySpace, kCGImageAlphaNone));
+        xCGContextHolder = maBitmapContext;
+    }
+    else
+    {
+        if (!xCGContextHolder.isSet())
+        {
+            // assert(Application::IsBitmapRendering());
+            mnBitmapDepth = 32;
+
+            const int nBytesPerRow = (mnBitmapDepth * nDX) / 8;
+            void* pRawData = std::malloc( nBytesPerRow * nDY );
+            const int nFlags = kCGImageAlphaNoneSkipFirst | kCGImageByteOrder32Little;
+            maBitmapContext.set(CGBitmapContextCreate(pRawData, nDX, nDY, 8, nBytesPerRow,
+                                                      GetSalData()->mxRGBSpace, nFlags));
+            xCGContextHolder = maBitmapContext;
+        }
+    }
+
+    SAL_WARN_IF(!xCGContextHolder.isSet(), "vcl.quartz", "No context");
+
+    const CGSize aNewSize = { static_cast<CGFloat>(nDX), static_cast<CGFloat>(nDY) };
+    maLayer.set(CGLayerCreateWithContext(xCGContextHolder.get(), aNewSize, nullptr));
+
+    if (maLayer.isSet() && mpGraphics)
+    {
+        // get the matching Quartz context
+        CGContextRef xDrawContext = CGLayerGetContext( maLayer.get() );
+
+        // Here we pass the CGLayerRef that the CGLayerHolder maLayer holds as the first parameter
+        // to SetVirDevGraphics(). That parameter is of type CGLayerHolder, so what we actually pass
+        // is an implicitly constructed *separate* CGLayerHolder. Is that what we want? No idea.
+        // Possibly we could pass just maLayer as such? But doing that does not fix tdf#138122.
+        mpGraphics->SetVirDevGraphics(this, maLayer.get(), xDrawContext, mnBitmapDepth);
+    }
+
+    return maLayer.isSet();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */