143 lines
3.1 KiB
C++
143 lines
3.1 KiB
C++
/*
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* synergy -- mouse and keyboard sharing utility
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* Copyright (C) 2004 Chris Schoeneman, Nick Bolton, Sorin Sbarnea
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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 COPYING 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 "CXWindowsClipboardBMPConverter.h"
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// BMP file header structure
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struct CBMPHeader {
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public:
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UInt16 type;
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UInt32 size;
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UInt16 reserved1;
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UInt16 reserved2;
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UInt32 offset;
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};
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// BMP is little-endian
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static inline
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UInt32
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fromLEU32(const UInt8* data)
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{
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return static_cast<UInt32>(data[0]) |
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(static_cast<UInt32>(data[1]) << 8) |
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(static_cast<UInt32>(data[2]) << 16) |
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(static_cast<UInt32>(data[3]) << 24);
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}
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static
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void
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toLE(UInt8*& dst, char src)
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{
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dst[0] = static_cast<UInt8>(src);
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dst += 1;
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}
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static
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void
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toLE(UInt8*& dst, UInt16 src)
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{
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dst[0] = static_cast<UInt8>(src & 0xffu);
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dst[1] = static_cast<UInt8>((src >> 8) & 0xffu);
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dst += 2;
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}
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static
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void
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toLE(UInt8*& dst, UInt32 src)
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{
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dst[0] = static_cast<UInt8>(src & 0xffu);
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dst[1] = static_cast<UInt8>((src >> 8) & 0xffu);
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dst[2] = static_cast<UInt8>((src >> 16) & 0xffu);
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dst[3] = static_cast<UInt8>((src >> 24) & 0xffu);
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dst += 4;
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}
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//
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// CXWindowsClipboardBMPConverter
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//
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CXWindowsClipboardBMPConverter::CXWindowsClipboardBMPConverter(
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Display* display) :
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m_atom(XInternAtom(display, "image/bmp", False))
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{
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// do nothing
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}
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CXWindowsClipboardBMPConverter::~CXWindowsClipboardBMPConverter()
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{
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// do nothing
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}
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IClipboard::EFormat
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CXWindowsClipboardBMPConverter::getFormat() const
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{
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return IClipboard::kBitmap;
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}
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Atom
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CXWindowsClipboardBMPConverter::getAtom() const
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{
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return m_atom;
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}
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int
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CXWindowsClipboardBMPConverter::getDataSize() const
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{
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return 8;
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}
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CString
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CXWindowsClipboardBMPConverter::fromIClipboard(const CString& bmp) const
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{
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// create BMP image
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UInt8 header[14];
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UInt8* 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>(14 + bmp.size()));
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toLE(dst, static_cast<UInt16>(0));
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toLE(dst, static_cast<UInt16>(0));
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toLE(dst, static_cast<UInt32>(14 + 40));
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return CString(reinterpret_cast<const char*>(header), 14) + bmp;
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}
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CString
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CXWindowsClipboardBMPConverter::toIClipboard(const CString& 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 CString();
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}
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// check BMP file header
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const UInt8* rawBMPHeader = reinterpret_cast<const UInt8*>(bmp.data());
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if (rawBMPHeader[0] != 'B' || rawBMPHeader[1] != 'M') {
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return CString();
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}
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// get offset to image data
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UInt32 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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}
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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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