///<summary>
/// Sync AC and DC brightness settings in the current power scheme.
/// The sync mutex is NOT acquired by this function.
/// Call SyncBrightness() instead to prevent a race condition when multiple instances.
///</summary>
void SyncBrightness_NoMutex()
{
// Get the current power scheme's AC & DC brightness levels
BrightnessInfo current = GetBrightness();
if (current == null)
{
Console.WriteLine("Cannot read current brightness information. Doing nothing.");
return;
}
ShowCurrentBrightnessInfo(ref current);
if (current.AC == current.DC)
{
Console.WriteLine("Already in sync.");
return;
}
// Sync
if (current.isAC)
{
Console.WriteLine("Changing DC brightness to " + current.AC + ".");
SetBrightness(PowerType.DC, current.AC);
}
else
{
Console.WriteLine("Changing AC brightness to " + current.DC + ".");
SetBrightness(PowerType.AC, current.DC);
}
}
public SliderViewModel(BrightnessInfo info, int id)
{
Name = "Monitor";
Minimum = info.Minimum;
Maximum = info.Maximum;
Current = info.Current;
Id = id;
}
/// <summary>
/// Returns the capabilities of the monitor
/// </summary>
private BrightnessInfo getCapabilities()
{
var info = new BrightnessInfo();
try
{
using (var monitors = new MonitorsCollector())
Dxva2.GetMonitorBrightness(monitors.Primary.hPhysicalMonitor, ref info.Minimum, ref info.Current, ref info.Maximum);
info.Minimum = 0;
info.Maximum = 100;
}
catch { }
return(info);
}
void ShowCurrentBrightnessInfo(ref BrightnessInfo current)
{
ShowHeader();
Console.WriteLine("Current power source: " + (current.isAC ? "AC" : "DC"));
if (current.isAC || opt_verbose)
{
Console.WriteLine("AC brightness: " + current.AC);
}
if (!current.isAC || opt_verbose)
{
Console.WriteLine("DC brightness: " + current.DC);
}
}
BrightnessInfo GetBrightness()
{
uint result;
IntPtr pGuid = NULL;
BrightnessInfo info = new BrightnessInfo();
SYSTEM_POWER_STATUS stat;
if (!GetSystemPowerStatus(out stat) || (stat._ACLineStatus != 0 && stat._ACLineStatus != 1))
{
Console.WriteLine("Cannot determine the power mode. Doing nothing.");
return(null);
}
info.isAC = (stat._ACLineStatus == 1);
result = PowerGetActiveScheme(NULL, ref pGuid);
if (result != 0)
{
Console.WriteLine("Could not get the active power scheme.");
return(null);
}
Guid activeScheme = (Guid)Marshal.PtrToStructure(pGuid, typeof(Guid));
IntPtr brightness = NULL;
int type = 0;
uint size = 4;
result = PowerReadACValue(NULL, activeScheme, VideoSubgroup, BrightnessKey, ref type, ref brightness, ref size);
if (result != 0)
{
Console.WriteLine("Could not get the brightness of AC.");
return(null);
}
info.AC = (int)brightness;
result = PowerReadDCValue(NULL, activeScheme, VideoSubgroup, BrightnessKey, ref type, ref brightness, ref size);
if (result != 0)
{
Console.WriteLine("Could not get the brightness of DC.");
return(null);
}
info.DC = (int)brightness;
return(info);
}
public DisplayController()
{
this.wmiDriver.BrightnessChanged += (level) => this.BrightnessChanged?.Invoke(level);
this.Capabilities = this.getCapabilities();
}