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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2004 Chris Schoeneman
*
* 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 COPYING 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.
*/
#include "CMSWindowsClipboardBitmapConverter.h"
#include "CLog.h"
//
// CMSWindowsClipboardBitmapConverter
//
CMSWindowsClipboardBitmapConverter::CMSWindowsClipboardBitmapConverter()
{
// do nothing
}
CMSWindowsClipboardBitmapConverter::~CMSWindowsClipboardBitmapConverter()
{
// do nothing
}
IClipboard::EFormat
CMSWindowsClipboardBitmapConverter::getFormat() const
{
return IClipboard::kBitmap;
}
UINT
CMSWindowsClipboardBitmapConverter::getWin32Format() const
{
return CF_DIB;
}
HANDLE
CMSWindowsClipboardBitmapConverter::fromIClipboard(const CString& data) const
{
// copy to memory handle
HGLOBAL gData = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, data.size());
if (gData != NULL) {
// get a pointer to the allocated memory
char* dst = (char*)GlobalLock(gData);
if (dst != NULL) {
memcpy(dst, data.data(), data.size());
GlobalUnlock(gData);
}
else {
GlobalFree(gData);
gData = NULL;
}
}
return gData;
}
CString
CMSWindowsClipboardBitmapConverter::toIClipboard(HANDLE data) const
{
// get datator
const char* src = (const char*)GlobalLock(data);
if (src == NULL) {
return CString();
}
UInt32 srcSize = (UInt32)GlobalSize(data);
// check image type
const BITMAPINFO* bitmap = reinterpret_cast<const BITMAPINFO*>(src);
LOG((CLOG_INFO "bitmap: %dx%d %d", bitmap->bmiHeader.biWidth, bitmap->bmiHeader.biHeight, (int)bitmap->bmiHeader.biBitCount));
if (bitmap->bmiHeader.biPlanes == 1 &&
(bitmap->bmiHeader.biBitCount == 24 ||
bitmap->bmiHeader.biBitCount == 32) &&
bitmap->bmiHeader.biCompression == BI_RGB) {
// already in canonical form
CString image(src, srcSize);
GlobalUnlock(data);
return image;
}
// create a destination DIB section
LOG((CLOG_INFO "convert image from: depth=%d comp=%d", bitmap->bmiHeader.biBitCount, bitmap->bmiHeader.biCompression));
void* raw;
BITMAPINFOHEADER info;
LONG w = bitmap->bmiHeader.biWidth;
LONG h = bitmap->bmiHeader.biHeight;
info.biSize = sizeof(BITMAPINFOHEADER);
info.biWidth = w;
info.biHeight = h;
info.biPlanes = 1;
info.biBitCount = 32;
info.biCompression = BI_RGB;
info.biSizeImage = 0;
info.biXPelsPerMeter = 1000;
info.biYPelsPerMeter = 1000;
info.biClrUsed = 0;
info.biClrImportant = 0;
HDC dc = GetDC(NULL);
HBITMAP dst = CreateDIBSection(dc, (BITMAPINFO*)&info,
DIB_RGB_COLORS, &raw, NULL, 0);
// find the start of the pixel data
const char* srcBits = (const char*)bitmap + bitmap->bmiHeader.biSize;
if (bitmap->bmiHeader.biBitCount >= 16) {
if (bitmap->bmiHeader.biCompression == BI_BITFIELDS &&
(bitmap->bmiHeader.biBitCount == 16 ||
bitmap->bmiHeader.biBitCount == 32)) {
srcBits += 3 * sizeof(DWORD);
}
}
else if (bitmap->bmiHeader.biClrUsed != 0) {
srcBits += bitmap->bmiHeader.biClrUsed * sizeof(RGBQUAD);
}
else {
srcBits += (1 << bitmap->bmiHeader.biBitCount) * sizeof(RGBQUAD);
}
// copy source image to destination image
HDC dstDC = CreateCompatibleDC(dc);
HGDIOBJ oldBitmap = SelectObject(dstDC, dst);
SetDIBitsToDevice(dstDC, 0, 0, w, h, 0, 0, 0, h,
srcBits, bitmap, DIB_RGB_COLORS);
SelectObject(dstDC, oldBitmap);
DeleteDC(dstDC);
GdiFlush();
// extract data
CString image((const char*)&info, info.biSize);
image.append((const char*)raw, 4 * w * h);
// clean up GDI
DeleteObject(dst);
ReleaseDC(NULL, dc);
// release handle
GlobalUnlock(data);
return image;
}
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