/// <summary>Returns a monitor given its device path.</summary>
/// <param name="devicePath">The monitor device path.</param>
/// <returns>Returns the monitor associated with the specified <paramref name="devicePath"/>, or null.</returns>
public static DisplayMonitor GetMonitorByDevicePath(string devicePath)
{
if (!isInitialized)
{
Update();
}
var adapters = new DisplayAdapter[adaptersByDeviceName.Count];
adaptersByDeviceName.Values.CopyTo(adapters, 0);
var aMax = adapters.Length;
for (var a = 0; a < aMax; ++a)
{
var monitor = adapters[a].GetMonitorByDevicePath(devicePath);
if (monitor != null)
{
return(monitor);
}
}
return(null);
}
/// <summary>Initializes a new <see cref="DisplayMonitor"/> instance.</summary>
/// <param name="displayAdapter">The display adapter this monitor is attached to; must not be null.</param>
/// <param name="displayDevice">A valid <see cref="DisplayDevice"/> structure.</param>
/// <param name="monitorHandle">A handle (HMONITOR) to the monitor.</param>
internal DisplayMonitor(DisplayAdapter displayAdapter, DisplayDevice displayDevice, IntPtr monitorHandle)
: base(ref displayDevice)
{
adapter = displayAdapter ?? throw new ArgumentNullException("displayAdapter");
info = GetInfo(handle = monitorHandle);
}
internal DisplayDeviceManagerEventArgs(DisplayAdapter adapter)
: base()
{
this.adapter = adapter;
}
/// <summary>Refreshes the device list and their state, and raises events.</summary>
public static void Update()
{
configuration.Refresh();
var adaptersToRefresh = new List <DisplayDevice>(adaptersByDeviceName.Count);
var removedAdapters = new List <string>(adaptersByDeviceName.Keys);
var newAdapters = new List <DisplayAdapter>();
var primaryAdapterChanged = false;
DisplayAdapter adapter;
var displayDevices = DisplayAdapter.EnumDisplayDevices(null, false);
var aMax = displayDevices.Count;
for (var a = 0; a < aMax; ++a)
{
var displayDevice = displayDevices[a];
if (adaptersByDeviceName.TryGetValue(displayDevice.DeviceName, out adapter))
{
adaptersToRefresh.Add(displayDevice);
removedAdapters.Remove(adapter.DeviceName);
}
else
{
adapter = new DisplayAdapter(displayDevice);
GetDisplayConfigInfo(adapter);
adaptersByDeviceName.Add(adapter.DeviceName, adapter);
newAdapters.Add(adapter);
}
if (adapter.State.HasFlag(DisplayAdapterStateIndicators.PrimaryDevice) && (primaryAdapterDeviceName != adapter.DeviceName))
{
primaryAdapterChanged = (primaryAdapterDeviceName != null);
primaryAdapterDeviceName = displayDevice.DeviceName;
}
}
while (removedAdapters.Count > 0)
{
var s = removedAdapters[0];
removedAdapters.RemoveAt(0);
adapter = adaptersByDeviceName[s];
adaptersByDeviceName.Remove(s);
adapter.OnRemoved();
AdapterRemoved?.Invoke(null, new DisplayDeviceManagerEventArgs(adapter));
}
while (newAdapters.Count > 0)
{
AdapterAdded?.Invoke(null, new DisplayDeviceManagerEventArgs(newAdapters[0]));
newAdapters.RemoveAt(0);
}
while (adaptersToRefresh.Count > 0)
{
var device = adaptersToRefresh[0];
adaptersToRefresh.RemoveAt(0);
if (adaptersByDeviceName.TryGetValue(device.DeviceName, out adapter))
{
adapter.Refresh(ref device);
GetDisplayConfigInfo(adapter);
}
}
if (primaryAdapterChanged)
{
PrimaryAdapterChanged?.Invoke(null, EventArgs.Empty);
}
isInitialized = true;
}
private static void GetDisplayConfigInfo(DisplayAdapter adapter)
{
var paths = configuration.Paths;
var pMax = paths.Count;
PathInfo path;
PathSourceInfo source;
PathTargetInfo target;
TargetDeviceDescription desc;
DisplayMonitor monitor;
int index;
for (var p = 0; p < pMax; ++p)
{
path = paths[p];
source = path.SourceInfo;
if (source == PathSourceInfo.Empty)
{
continue;
}
if (adapter.DeviceName.Equals(DisplayConfiguration.GetSourceGDIDeviceName(source), StringComparison.OrdinalIgnoreCase))
{
adapter.identifier = source.Identifier;
if (path.SupportsVirtualMode)
{
adapter.cloneGroupId = source.CloneGroupId;
index = source.ModeInfoIndex2;
}
else
{
adapter.cloneGroupId = -1;
index = source.ModeInfoIndex;
}
//if( index == PathSourceInfo.InvalidModeInfoIndex )
// adapter.currentModeFormat = PixelFormat.Undefined;
//else
// adapter.currentModeFormat = configuration.DisplayModes[ index ].Format;
target = path.TargetInfo;
if (target == PathTargetInfo.Empty)
{
continue;
}
desc = DisplayConfiguration.GetTargetDeviceDescription(target);
monitor = adapter.GetMonitorByDevicePath(desc.DevicePath);
if (monitor != null)
{
monitor.identifier = target.Identifier;
if (!string.IsNullOrWhiteSpace(desc.FriendlyName))
{
monitor.DisplayName = desc.FriendlyName;
}
monitor.videoOutputTechnology = target.OutputTechnology;
monitor.scaling = target.Scaling;
monitor.refreshRate = target.RefreshRate;
monitor.scanlineOrdering = target.ScanlineOrdering;
index = path.SupportsVirtualMode ? target.ModeInfoIndex2 : target.ModeInfoIndex;
if (index != PathTargetInfo.InvalidModeInfoIndex)
{
monitor.videoSignalInfo = configuration.DisplayModes[index].VideoSignalInformation;
}
else
{
monitor.videoSignalInfo = VideoSignalInfo.Empty;
}
monitor.Orientation = target.Rotation;
monitor.connectorInstance = desc.ConnectorInstance;
}
}
}
}
//private static DisplayConfiguration registryConfiguration;
/// <summary>Refreshes the device list and states, and raises events.</summary>
public static void Refresh()
{
var removedAdapters = new List<string>( adaptersByDeviceName.Keys );
var addedAdapters = new List<string>();
var adaptersToRefresh = new List<DisplayDevice>( removedAdapters.Count );
var primaryAdapterChanged = false;
DisplayAdapter adapter;
var displayDevices = DisplayAdapter.EnumDisplayDevices( null, false );
for( var a = 0; a < displayDevices.Count; a++ )
{
var displayDevice = displayDevices[ a ];
if( adaptersByDeviceName.TryGetValue( displayDevice.DeviceName, out adapter ) )
{
adaptersToRefresh.Add( displayDevice );
removedAdapters.Remove( adapter.DeviceIdentifier );
}
else
{
adapter = new DisplayAdapter( displayDevice );
adaptersByDeviceName.Add( adapter.DeviceIdentifier, adapter );
addedAdapters.Add( adapter.DeviceIdentifier );
}
if( adapter.State.HasFlag( AdapterStateIndicators.PrimaryDevice ) && ( primaryAdapterDeviceName != adapter.DeviceIdentifier ) )
{
primaryAdapterChanged = ( primaryAdapterDeviceName != null );
primaryAdapterDeviceName = displayDevice.DeviceName;
}
}
if( DisplayConfiguration.IsSupported )
{
if( currentConfiguration == null )
currentConfiguration = DisplayConfiguration.Query( DisplayConfigRequest );
else
currentConfiguration.Refresh();
}
if( removedAdapters.Count > 0 )
{
var adapterRemovedEvent = AdapterRemoved;
while( removedAdapters.Count > 0 )
{
var s = removedAdapters[ 0 ];
removedAdapters.RemoveAt( 0 );
adapter = adaptersByDeviceName[ s ];
adaptersByDeviceName.Remove( s );
adapter.OnRemoved();
if( adapterRemovedEvent != null )
adapterRemovedEvent.Invoke( null, new DisplayDeviceEventArgs( adapter.DeviceIdentifier ) );
}
}
if( addedAdapters.Count > 0 )
{
var adapterAddedEvent = AdapterAdded;
while( addedAdapters.Count > 0 )
{
if( adapterAddedEvent != null )
adapterAddedEvent.Invoke( null, new DisplayDeviceEventArgs( addedAdapters[ 0 ] ) );
addedAdapters.RemoveAt( 0 );
}
}
while( adaptersToRefresh.Count > 0 )
{
var device = adaptersToRefresh[ 0 ];
if( adaptersByDeviceName.TryGetValue( device.DeviceName, out adapter ) )
adapter.Refresh( device );
adaptersToRefresh.RemoveAt( 0 );
}
if( primaryAdapterChanged && PrimaryAdapterChanged != null )
PrimaryAdapterChanged.Invoke( null, EventArgs.Empty );
isInitialized = true;
}
/// <summary>Returns a monitor given its device path.</summary>
/// <param name="devicePath">The monitor device path.</param>
/// <returns>Returns the monitor associated with the specified <paramref name="devicePath"/>, or null.</returns>
public static DisplayMonitor GetMonitorByDevicePath( string devicePath )
{
if( !isInitialized )
Refresh();
var adapters = new DisplayAdapter[ adaptersByDeviceName.Count ];
adaptersByDeviceName.Values.CopyTo( adapters, 0 );
for( var a = 0; a < adapters.Length; a++ )
{
var monitor = adapters[ a ].Monitors.GetMonitorByDevicePath( devicePath );
if( monitor != null )
return monitor;
}
return null;
}
