mirror of
https://github.com/nomi-san/parsec-vdd.git
synced 2026-08-07 13:50:45 +00:00
Nguyen Duy
411 lines
14 KiB
C#
411 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Globalization;
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using System.Linq;
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using System.Runtime.InteropServices;
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using Microsoft.Win32;
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namespace ParsecVDisplay
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{
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internal class Display
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{
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public enum Orientation
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{
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Angle0 = 0, // landscape
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Angle90, // portrait
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Angle180, // landscape (flipped)
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Angle270 // portrait (flipped)
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}
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public class Mode
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{
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public int Width;
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public int Height;
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public int Hz;
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public Mode()
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{
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}
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public Mode(int width, int height, int hz)
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{
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Width = width;
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Height = height;
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Hz = hz;
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}
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public Mode(ulong bits)
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{
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Width = unchecked((ushort)bits);
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Height = unchecked((ushort)(bits >> 16));
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Hz = unchecked((ushort)(bits >> 32));
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}
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public ulong Bits => (uint)(Width & 0xFFFF)
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| ((ulong)(Height & 0xFFFF) << 16)
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| ((ulong)(Hz & 0xFFFF) << 32);
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public string Resolution => $"{Width} × {Height}";
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public string RefreshRate => $"{Hz} Hz";
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public override string ToString() => $"{Resolution} @ {RefreshRate}";
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}
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public class ModeSet
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{
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public int Width;
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public int Height;
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public List<int> RefreshRates;
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}
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public bool Active;
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public int Identifier;
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public int CloneOf;
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public int Address;
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public DateTime LastArrival;
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public string Adapter;
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public string AdapterInstance;
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public DateTime AdapterArrival;
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public string DeviceName;
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public string DisplayName;
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public Mode CurrentMode;
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public Orientation CurrentOrientation;
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public List<Mode> ModeList;
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public List<ModeSet> SupportedResolutions;
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Display()
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{
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ModeList = new List<Mode>();
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CurrentOrientation = Orientation.Angle0;
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SupportedResolutions = new List<ModeSet>();
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}
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public override string ToString()
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{
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var str = $"[{Identifier}] {DeviceName} ({DisplayName}#{Address})";
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if (CloneOf > 0 && CloneOf < Identifier) str += $" (clone of [{CloneOf}])";
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return str;
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}
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void FetchAllModes()
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{
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var devMode = new Native.DEVMODE();
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devMode.dmSize = (short)Marshal.SizeOf(typeof(Native.DEVMODE));
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var set = new Dictionary<ulong, HashSet<int>>();
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for (int num = -1; Native.EnumDisplaySettings(DeviceName, num, ref devMode); num++)
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{
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var mode = new Mode
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{
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Width = devMode.dmPelsWidth,
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Height = devMode.dmPelsHeight,
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Hz = devMode.dmDisplayFrequency,
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};
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if (num == -1)
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{
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CurrentMode = mode;
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CurrentOrientation = devMode.dmDisplayOrientation;
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}
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else
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{
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ModeList.Add(mode);
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mode.Hz = 0;
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if (set.TryGetValue(mode.Bits, out var rrs))
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{
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rrs.Add(devMode.dmDisplayFrequency);
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}
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else
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{
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set[mode.Bits] = new HashSet<int> { devMode.dmDisplayFrequency };
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}
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}
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}
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foreach (var kv in set)
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{
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var mode = new Mode(kv.Key);
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var rrs = kv.Value.ToList();
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rrs.Sort((a, b) => a - b);
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SupportedResolutions.Add(new ModeSet
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{
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Width = mode.Width,
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Height = mode.Height,
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RefreshRates = rrs,
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});
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}
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SupportedResolutions.Sort((a, b)
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=> b.Width == a.Width ? (b.Height - a.Height) : (b.Width - a.Width));
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}
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public bool ChangeMode(int? width, int? height, int? hz, Orientation? orientation)
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{
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var mode = new Native.DEVMODE();
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mode.dmSize = (short)Marshal.SizeOf(typeof(Native.DEVMODE));
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if (Native.EnumDisplaySettings(DeviceName, -1, ref mode))
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{
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if (width.HasValue) mode.dmPelsWidth = width.Value;
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if (height.HasValue) mode.dmPelsHeight = height.Value;
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if (hz.HasValue) mode.dmDisplayFrequency = hz.Value;
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if (orientation.HasValue)
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{
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var newDO = orientation.Value;
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mode.dmDisplayOrientation = newDO;
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if (((int)newDO + (int)CurrentOrientation) % 2 != 0)
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{
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int t = mode.dmPelsWidth;
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mode.dmPelsWidth = mode.dmPelsHeight;
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mode.dmPelsHeight = t;
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}
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}
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return Native.ChangeDisplaySettingsEx(DeviceName,
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ref mode, IntPtr.Zero, 1, IntPtr.Zero) == 0;
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}
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return false;
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}
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public void TakeScreenshot(string saveFile)
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{
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int width = CurrentMode.Width;
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int height = CurrentMode.Height;
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using (var bmp = new Bitmap(width, height))
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using (var gfx = Graphics.FromImage(bmp))
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{
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var hdc = Native.CreateDC(IntPtr.Zero, DeviceName, IntPtr.Zero, IntPtr.Zero);
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var dstHdc = gfx.GetHdc();
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Native.BitBlt(dstHdc, 0, 0, width, height, hdc, 0, 0, 0x00CC0020);
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gfx.ReleaseHdc(dstHdc);
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bmp.Save(saveFile, System.Drawing.Imaging.ImageFormat.Png);
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Native.DeleteDC(hdc);
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}
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}
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public static string DumpModes(List<Mode> modes)
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{
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return string.Join(",", modes.Select(m => m.Bits.ToString("x")));
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}
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public static List<Mode> ParseModes(string modes)
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{
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var list = new List<Mode>();
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var tokens = modes.Trim().Split(',');
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foreach (var mode in tokens)
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if (ulong.TryParse(mode, NumberStyles.HexNumber, null, out var bits))
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list.Add(new Mode(bits));
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return list;
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}
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public static List<Display> GetAllDisplays()
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{
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var displayMap = new Dictionary<string, Display>(StringComparer.OrdinalIgnoreCase);
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var cloneGroups = new List<Tuple<Display, Display>>();
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var paths = GetDisplayPaths();
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var dd = new Native.DISPLAY_DEVICE();
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dd.cb = Marshal.SizeOf(typeof(Native.DISPLAY_DEVICE));
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for (int i = 0; Native.EnumDisplayDevices(null, i, ref dd, 0); i++)
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{
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Display prevActiveDisplay = null;
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var dd2 = new Native.DISPLAY_DEVICE();
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dd2.cb = Marshal.SizeOf(typeof(Native.DISPLAY_DEVICE));
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for (int j = 0; Native.EnumDisplayDevices(dd.DeviceName, j, ref dd2, Native.EDD_GET_DEVICE_INTERFACE_NAME); j++)
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{
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if ((dd2.StateFlags & Native.DISPLAY_DEVICE_ATTACHED) == 0)
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continue;
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var pathIdx = paths.FindIndex(p => dd2.DeviceID.Contains(p.Replace('\\', '#')));
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if (pathIdx < 0) continue;
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if (!displayMap.ContainsKey(paths[pathIdx]))
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{
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var display = new Display
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{
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Active = (dd2.StateFlags & Native.DISPLAY_DEVICE_ACTIVE) != 0,
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Address = ParseDisplayAddress(paths[pathIdx]),
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DeviceName = dd.DeviceName,
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DisplayName = ParseDisplayCode(dd2.DeviceID),
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};
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if (display.Active)
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{
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if (prevActiveDisplay == null)
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{
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prevActiveDisplay = display;
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}
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else
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{
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cloneGroups.Add(new Tuple<Display, Display>(prevActiveDisplay, display));
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}
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display.FetchAllModes();
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}
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Device.GetDeviceInstance(paths[pathIdx], out uint devInst);
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display.LastArrival = Device.GetDeviceLastArrival(devInst);
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Device.GetParentDeviceInstance(devInst, out uint parentInst, out display.AdapterInstance);
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display.Adapter = Device.GetDeviceDescription(parentInst);
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display.AdapterArrival = Device.GetDeviceLastArrival(parentInst);
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displayMap.Add(paths[pathIdx], display);
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paths.RemoveAt(pathIdx);
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}
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}
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}
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var displays = displayMap.Values.ToList();
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// Sort displays by adapter arrival time
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displays.Sort((a, b) =>
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{
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if (a.AdapterInstance == b.AdapterInstance)
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return a.LastArrival.CompareTo(b.LastArrival);
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return a.AdapterArrival.CompareTo(b.AdapterArrival);
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});
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// Fill display identifier
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for (int i = 0; i < displays.Count; i++)
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displays[i].Identifier = i + 1;
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// Fill clone of identifier
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foreach (var group in cloneGroups)
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{
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group.Item1.CloneOf = group.Item2.Identifier;
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group.Item2.CloneOf = group.Item1.Identifier;
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}
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cloneGroups.Clear();
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return displays;
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}
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static List<string> GetDisplayPaths()
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{
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using (var key = Registry.LocalMachine.OpenSubKey(@"SYSTEM\CurrentControlSet\Services\monitor\Enum", false))
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{
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var paths = new List<string>();
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int count = Convert.ToInt32(key.GetValue("Count", 0));
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for (int i = 0; i < count; ++i)
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{
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var path = key.GetValue($"{i}");
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paths.Add(Convert.ToString(path));
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}
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return paths;
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}
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}
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static int ParseDisplayAddress(string path)
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{
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var index = path.LastIndexOf("uid", StringComparison.OrdinalIgnoreCase);
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int.TryParse(path.Substring(index + 3), out var address);
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return address;
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}
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static string ParseDisplayCode(string id)
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{
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var tokens = id.Split('#');
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return tokens.Length >= 2 ? tokens[1] : tokens[0];
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}
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static class Native
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{
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public const uint EDD_GET_DEVICE_INTERFACE_NAME = 0x1;
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public const uint DISPLAY_DEVICE_ACTIVE = 0x1;
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public const uint DISPLAY_DEVICE_ATTACHED = 0x2;
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool EnumDisplayDevices(string lpDevice, int iDevNum, ref DISPLAY_DEVICE lpDisplayDevice, uint dwFlags);
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[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
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public struct DISPLAY_DEVICE
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{
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public int cb;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string DeviceName;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
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public string DeviceString;
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public uint StateFlags;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
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public string DeviceID;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
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public string DeviceKey;
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}
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool EnumDisplaySettings(string deviceName, int modeNum, ref DEVMODE devMode);
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[DllImport("user32.dll")]
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public static extern int ChangeDisplaySettingsEx(string lpszDeviceName, ref DEVMODE lpDevMode,
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IntPtr hwnd, uint dwflags, IntPtr lParam);
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[StructLayout(LayoutKind.Sequential)]
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public struct DEVMODE
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{
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string dmDeviceName;
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public short dmSpecVersion;
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public short dmDriverVersion;
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public short dmSize;
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public short dmDriverExtra;
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public int dmFields;
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public int dmPositionX;
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public int dmPositionY;
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public Orientation dmDisplayOrientation;
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public int dmDisplayFixedOutput;
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public short dmColor;
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public short dmDuplex;
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public short dmYResolution;
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public short dmTTOption;
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public short dmCollate;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string dmFormName;
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public short dmLogPixels;
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public int dmBitsPerPel;
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public int dmPelsWidth;
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public int dmPelsHeight;
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public int dmDisplayFlags;
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public int dmDisplayFrequency;
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public int dmICMMethod;
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public int dmICMIntent;
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public int dmMediaType;
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public int dmDitherType;
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public int dmReserved1;
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public int dmReserved2;
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public int dmPanningWidth;
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public int dmPanningHeight;
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}
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[DllImport("gdi32.dll")]
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public static extern IntPtr CreateDC(IntPtr pwszDriver, string pwszDevice, IntPtr pszPort, IntPtr devmode);
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[DllImport("gdi32.dll")]
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public static extern int BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, int rasterOperation);
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[DllImport("gdi32.dll")]
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public static extern int DeleteDC(IntPtr hdc);
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}
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}
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} |