121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
/*
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* Deskflow -- mouse and keyboard sharing utility
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* Copyright (C) 2014-2016 Symless Ltd.
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* Patch by Ryan Chapman
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*
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* This package is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* found in the file LICENSE that should have accompanied this file.
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*
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* This package is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "platform/OSXClipboardBMPConverter.h"
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#include "base/Log.h"
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// BMP file header structure
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struct CBMPHeader
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{
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public:
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uint16_t type;
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uint32_t size;
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uint16_t reserved1;
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uint16_t reserved2;
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uint32_t offset;
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};
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// BMP is little-endian
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static inline uint32_t fromLEU32(const uint8_t *data)
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{
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return static_cast<uint32_t>(data[0]) | (static_cast<uint32_t>(data[1]) << 8) |
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(static_cast<uint32_t>(data[2]) << 16) | (static_cast<uint32_t>(data[3]) << 24);
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}
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static void toLE(uint8_t *&dst, char src)
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{
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dst[0] = static_cast<uint8_t>(src);
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dst += 1;
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}
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static void toLE(uint8_t *&dst, uint16_t src)
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{
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dst[0] = static_cast<uint8_t>(src & 0xffu);
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dst[1] = static_cast<uint8_t>((src >> 8) & 0xffu);
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dst += 2;
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}
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static void toLE(uint8_t *&dst, uint32_t src)
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{
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dst[0] = static_cast<uint8_t>(src & 0xffu);
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dst[1] = static_cast<uint8_t>((src >> 8) & 0xffu);
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dst[2] = static_cast<uint8_t>((src >> 16) & 0xffu);
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dst[3] = static_cast<uint8_t>((src >> 24) & 0xffu);
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dst += 4;
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}
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OSXClipboardBMPConverter::OSXClipboardBMPConverter()
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{
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// do nothing
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}
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OSXClipboardBMPConverter::~OSXClipboardBMPConverter()
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{
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// do nothing
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}
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IClipboard::EFormat OSXClipboardBMPConverter::getFormat() const
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{
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return IClipboard::kBitmap;
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}
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CFStringRef OSXClipboardBMPConverter::getOSXFormat() const
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{
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// TODO: does this only work with Windows?
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return CFSTR("com.microsoft.bmp");
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}
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std::string OSXClipboardBMPConverter::fromIClipboard(const std::string &bmp) const
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{
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LOG((CLOG_DEBUG1 "getting data from clipboard"));
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// create BMP image
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uint8_t header[14];
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uint8_t *dst = header;
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toLE(dst, 'B');
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toLE(dst, 'M');
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toLE(dst, static_cast<uint32_t>(14 + bmp.size()));
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toLE(dst, static_cast<uint16_t>(0));
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toLE(dst, static_cast<uint16_t>(0));
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toLE(dst, static_cast<uint32_t>(14 + 40));
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return std::string(reinterpret_cast<const char *>(header), 14) + bmp;
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}
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std::string OSXClipboardBMPConverter::toIClipboard(const std::string &bmp) const
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{
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// make sure data is big enough for a BMP file
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if (bmp.size() <= 14 + 40) {
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return std::string();
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}
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// check BMP file header
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const uint8_t *rawBMPHeader = reinterpret_cast<const uint8_t *>(bmp.data());
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if (rawBMPHeader[0] != 'B' || rawBMPHeader[1] != 'M') {
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return std::string();
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}
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// get offset to image data
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uint32_t offset = fromLEU32(rawBMPHeader + 10);
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// construct BMP
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if (offset == 14 + 40) {
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return bmp.substr(14);
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} else {
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return bmp.substr(14, 40) + bmp.substr(offset, bmp.size() - offset);
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}
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}
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