mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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111 lines
3.9 KiB
C++
111 lines
3.9 KiB
C++
/*
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* Copyright (c) 2009, The Mozilla Foundation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the Mozilla Foundation nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY The Mozilla Foundation ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL The Mozilla Foundation BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Contributors:
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* Ted Mielczarek <ted.mielczarek@gmail.com>
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*/
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/*
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* screenshot.cpp : Save a screenshot of the Windows desktop in .png format.
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* If a filename is specified as the first argument on the commandline,
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* then the image will be saved to that filename. Otherwise, the image will
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* be saved as "screenshot.png" in the current working directory.
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*/
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#undef WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <gdiplus.h>
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using namespace Gdiplus;
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// From http://msdn.microsoft.com/en-us/library/ms533843%28VS.85%29.aspx
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static int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
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{
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UINT num = 0; // number of image encoders
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UINT size = 0; // size of the image encoder array in bytes
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ImageCodecInfo* pImageCodecInfo = nullptr;
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GetImageEncodersSize(&num, &size);
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if(size == 0)
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return -1; // Failure
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pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
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if(pImageCodecInfo == nullptr)
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return -1; // Failure
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GetImageEncoders(num, size, pImageCodecInfo);
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for(UINT j = 0; j < num; ++j)
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{
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if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
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{
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*pClsid = pImageCodecInfo[j].Clsid;
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free(pImageCodecInfo);
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return j; // Success
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}
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}
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free(pImageCodecInfo);
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return -1; // Failure
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}
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#ifdef __MINGW32__
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extern "C"
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#endif
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int wmain(int argc, wchar_t** argv)
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{
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GdiplusStartupInput gdiplusStartupInput;
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ULONG_PTR gdiplusToken;
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GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, nullptr);
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HWND desktop = GetDesktopWindow();
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HDC desktopdc = GetDC(desktop);
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HDC mydc = CreateCompatibleDC(desktopdc);
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int width = GetSystemMetrics(SM_CXSCREEN);
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int height = GetSystemMetrics(SM_CYSCREEN);
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HBITMAP mybmp = CreateCompatibleBitmap(desktopdc, width, height);
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HBITMAP oldbmp = (HBITMAP)SelectObject(mydc, mybmp);
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BitBlt(mydc,0,0,width,height,desktopdc,0,0, SRCCOPY|CAPTUREBLT);
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SelectObject(mydc, oldbmp);
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const wchar_t* filename = (argc > 1) ? argv[1] : L"screenshot.png";
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Bitmap* b = Bitmap::FromHBITMAP(mybmp, nullptr);
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CLSID encoderClsid;
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Status stat = GenericError;
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if (b && GetEncoderClsid(L"image/png", &encoderClsid) != -1) {
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stat = b->Save(filename, &encoderClsid, nullptr);
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}
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if (b)
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delete b;
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// cleanup
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GdiplusShutdown(gdiplusToken);
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ReleaseDC(desktop, desktopdc);
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DeleteObject(mybmp);
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DeleteDC(mydc);
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return stat == Ok ? 0 : 1;
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}
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