131 lines
5.7 KiB
C#
131 lines
5.7 KiB
C#
#region --- License ---
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/* Licensed under the MIT/X11 license.
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* Copyright (c) 2006-2008 the OpenTK team.
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* This notice may not be removed.
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* See license.txt for licensing detailed licensing details.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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using OpenTK.Graphics;
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using System.Runtime.InteropServices;
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using System.Diagnostics;
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namespace OpenTK.Platform.Windows
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{
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internal class WinDisplayDeviceDriver : IDisplayDeviceDriver
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{
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static object display_lock = new object();
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static Dictionary<OpenTK.Graphics.DisplayDevice, string> available_device_names =
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new Dictionary<OpenTK.Graphics.DisplayDevice, string>(); // Needed for ChangeDisplaySettingsEx
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#region --- Constructors ---
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/// <summary>Queries available display devices and display resolutions.</summary>
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static WinDisplayDeviceDriver()
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{
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lock (display_lock)
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{
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// To minimize the need to add static methods to OpenTK.Graphics.DisplayDevice
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// we only allow settings to be set through its constructor.
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// Thus, we save all necessary parameters in temporary variables
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// and construct the device when every needed detail is available.
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// The main DisplayDevice constructor adds the newly constructed device
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// to the list of available devices.
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OpenTK.Graphics.DisplayDevice opentk_dev;
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DisplayResolution opentk_dev_current_res = null;
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List<DisplayResolution> opentk_dev_available_res = new List<DisplayResolution>();
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bool opentk_dev_primary = false;
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int device_count = 0, mode_count = 0;
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// Get available video adapters and enumerate all monitors
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WindowsDisplayDevice dev1 = new WindowsDisplayDevice(), dev2 = new WindowsDisplayDevice();
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while (Functions.EnumDisplayDevices(null, device_count++, dev1, 0))
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{
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if ((dev1.StateFlags & DisplayDeviceStateFlags.AttachedToDesktop) == DisplayDeviceStateFlags.None)
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continue;
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DeviceMode monitor_mode = new DeviceMode();
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// The second function should only be executed when the first one fails
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// (e.g. when the monitor is disabled)
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if (Functions.EnumDisplaySettings(dev1.DeviceName.ToString(), DisplayModeSettingsEnum.CurrentSettings, monitor_mode) ||
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Functions.EnumDisplaySettings(dev1.DeviceName.ToString(), DisplayModeSettingsEnum.RegistrySettings, monitor_mode))
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{
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opentk_dev_current_res = new DisplayResolution(monitor_mode.PelsWidth, monitor_mode.PelsHeight,
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monitor_mode.BitsPerPel, monitor_mode.DisplayFrequency);
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opentk_dev_primary =
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(dev1.StateFlags & DisplayDeviceStateFlags.PrimaryDevice) != DisplayDeviceStateFlags.None;
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}
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opentk_dev_available_res.Clear();
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mode_count = 0;
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while (Functions.EnumDisplaySettings(dev1.DeviceName.ToString(), mode_count++, monitor_mode))
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{
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DisplayResolution res = new DisplayResolution(
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monitor_mode.PelsWidth, monitor_mode.PelsHeight,
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monitor_mode.BitsPerPel, monitor_mode.DisplayFrequency);
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opentk_dev_available_res.Add(res);
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}
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// Construct the OpenTK DisplayDevice through the accumulated parameters.
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// The constructor will automatically add the DisplayDevice to the list
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// of available devices.
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opentk_dev = new OpenTK.Graphics.DisplayDevice(opentk_dev_current_res, opentk_dev_primary,
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opentk_dev_available_res);
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available_device_names.Add(opentk_dev, dev1.DeviceName);
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}
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}
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}
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public WinDisplayDeviceDriver()
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{
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}
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#endregion
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#region --- IDisplayDeviceDriver Members ---
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#region public bool TryChangeResolution(OpenTK.Graphics.DisplayDevice device, DisplayResolution resolution)
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public bool TryChangeResolution(OpenTK.Graphics.DisplayDevice device, DisplayResolution resolution)
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{
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DeviceMode mode = null;
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if (resolution != null)
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{
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mode = new DeviceMode();
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mode.PelsWidth = resolution.Width;
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mode.PelsHeight = resolution.Height;
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mode.BitsPerPel = resolution.BitsPerPixel;
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mode.DisplayFrequency = (int)resolution.RefreshRate;
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mode.Fields = Constants.DM_BITSPERPEL
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| Constants.DM_PELSWIDTH
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| Constants.DM_PELSHEIGHT
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| Constants.DM_DISPLAYFREQUENCY;
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}
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return Constants.DISP_CHANGE_SUCCESSFUL ==
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Functions.ChangeDisplaySettingsEx(available_device_names[device], mode, IntPtr.Zero,
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ChangeDisplaySettingsEnum.Fullscreen, IntPtr.Zero);
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}
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#endregion
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#region public TryRestoreResolution TryRestoreResolution(OpenTK.Graphics.DisplayDevice device)
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public bool TryRestoreResolution(OpenTK.Graphics.DisplayDevice device)
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{
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return TryChangeResolution(device, null);
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}
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#endregion
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#endregion
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}
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}
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