src/Utils/Monitor.cpp

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2020 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19
  20 #include "stdafx.h"
  21 #include "Monitor.h"
  22 #include <vector>
  23 #include <algorithm>
  24
  25 static BOOL CALLBACK MonitorEnum(HMONITOR hMon, HDC /*hdc*/, LPRECT lprcMonitor, LPARAM pData)
  26 {
  27         MONITORINFOEX miex = { 0 };
  28         miex.cbSize = sizeof(MONITORINFOEX);
  29         GetMonitorInfo(hMon, &miex);
  30
  31         if (miex.dwFlags == DISPLAY_DEVICE_MIRRORING_DRIVER)
  32                 return TRUE;
  33
  34         std::vector<RECT>* pMonRects = reinterpret_cast<std::vector<RECT>*>(pData);
  35         pMonRects->push_back(*lprcMonitor);
  36         return TRUE;
  37 }
  38
  39 std::wstring GetMonitorSetupHash()
  40 {
  41         std::vector<RECT> monRects;
  42         EnumDisplayMonitors(0, 0, MonitorEnum, reinterpret_cast<LPARAM>(&monRects));
  43         std::sort(monRects.begin(), monRects.end(),
  44                 [](const RECT& a, const RECT& b) -> bool {
  45                         if (a.left == b.left)
  46                                 return a.top < b.top;
  47                         return a.left < b.left;
  48                 });
  49         return GetHashText(monRects.data(), monRects.size() * sizeof(RECT), HashType::HashMd5);
  50 }