1 files changed, 134 insertions, 0 deletions
diff --git a/src/lib/platform/OSXClipboardBMPConverter.cpp b/src/lib/platform/OSXClipboardBMPConverter.cpp
new file mode 100644
index 0000000..51c44ec
--- /dev/null
+++ b/src/lib/platform/OSXClipboardBMPConverter.cpp
@@ -0,0 +1,134 @@
+/*
+ * barrier -- mouse and keyboard sharing utility
+ * Copyright (C) 2014-2016 Symless Ltd.
+ * Patch by Ryan Chapman
+ *
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file LICENSE that should have accompanied this file.
+ *
+ * This package is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "platform/OSXClipboardBMPConverter.h"
+#include "base/Log.h"
+
+// BMP file header structure
+struct CBMPHeader {
+public:
+    UInt16                type;
+    UInt32                size;
+    UInt16                reserved1;
+    UInt16                reserved2;
+    UInt32                offset;
+};
+
+// BMP is little-endian
+static inline
+UInt32
+fromLEU32(const UInt8* data)
+{
+    return static_cast<UInt32>(data[0]) |
+            (static_cast<UInt32>(data[1]) << 8) |
+            (static_cast<UInt32>(data[2]) << 16) |
+            (static_cast<UInt32>(data[3]) << 24);
+}
+
+static
+void
+toLE(UInt8*& dst, char src)
+{
+    dst[0] = static_cast<UInt8>(src);
+    dst += 1;
+}
+
+static
+void
+toLE(UInt8*& dst, UInt16 src)
+{
+    dst[0] = static_cast<UInt8>(src & 0xffu);
+    dst[1] = static_cast<UInt8>((src >> 8) & 0xffu);
+    dst += 2;
+}
+
+static
+void
+toLE(UInt8*& dst, UInt32 src)
+{
+    dst[0] = static_cast<UInt8>(src & 0xffu);
+    dst[1] = static_cast<UInt8>((src >> 8) & 0xffu);
+    dst[2] = static_cast<UInt8>((src >> 16) & 0xffu);
+    dst[3] = static_cast<UInt8>((src >> 24) & 0xffu);
+    dst += 4;
+}
+
+OSXClipboardBMPConverter::OSXClipboardBMPConverter()
+{
+    // do nothing
+}
+
+OSXClipboardBMPConverter::~OSXClipboardBMPConverter()
+{
+    // do nothing
+}
+
+IClipboard::EFormat
+OSXClipboardBMPConverter::getFormat() const
+{
+    return IClipboard::kBitmap;
+}
+
+CFStringRef
+OSXClipboardBMPConverter::getOSXFormat() const
+{
+    // TODO: does this only work with Windows?
+    return CFSTR("com.microsoft.bmp");
+}
+
+String
+OSXClipboardBMPConverter::fromIClipboard(const String& bmp) const
+{
+    LOG((CLOG_DEBUG1 "ENTER OSXClipboardBMPConverter::doFromIClipboard()"));
+    // create BMP image
+    UInt8 header[14];
+    UInt8* dst = header;
+    toLE(dst, 'B');
+    toLE(dst, 'M');
+    toLE(dst, static_cast<UInt32>(14 + bmp.size()));
+    toLE(dst, static_cast<UInt16>(0));
+    toLE(dst, static_cast<UInt16>(0));
+    toLE(dst, static_cast<UInt32>(14 + 40));
+    return String(reinterpret_cast<const char*>(header), 14) + bmp;
+}
+
+String
+OSXClipboardBMPConverter::toIClipboard(const String& bmp) const
+{
+    // make sure data is big enough for a BMP file
+    if (bmp.size() <= 14 + 40) {
+        return String();
+    }
+
+    // check BMP file header
+    const UInt8* rawBMPHeader = reinterpret_cast<const UInt8*>(bmp.data());
+    if (rawBMPHeader[0] != 'B' || rawBMPHeader[1] != 'M') {
+        return String();
+    }
+
+    // get offset to image data
+    UInt32 offset = fromLEU32(rawBMPHeader + 10);
+
+    // construct BMP
+    if (offset == 14 + 40) {
+        return bmp.substr(14);
+    }
+    else {
+        return bmp.substr(14, 40) + bmp.substr(offset, bmp.size() - offset);
+    }
+}