Utility to capture screenshots at crazily large sizes required by printers for floor standing banners, etc prior to 2017.03.0p1

ScreenCaptureUtil.cs

using System;
using UnityEngine;

namespace UGS {

	/// <summary>
	/// See <seealso cref="http://docs.unity3d.com/ScriptReference/Application.CaptureScreenshot.html"/>.
	/// N.b. docs now say "Removed in version 2017.3.0p1"
	/// Now API call includes super-size facility https://docs.unity3d.com/ScriptReference/ScreenCapture.CaptureScreenshot.html
	/// </summary>
	public class ScreenCaptureUtil : MonoBehaviour {

		#region Resize

		[Header("Resize")]

		[Tooltip("What key activates resizes the window.")]
		[SerializeField]
		private KeyCode resizeKey = KeyCode.F10;

		[SerializeField]
		private int desiredOutputWidth = 9520, desiredOutputHeight = 23693;

		[SerializeField]
		private KeyCode showSizeToggleKey = KeyCode.F7;

		private bool showSize = false;

		#endregion Resize

		#region Screenshot
		[Header("Screenshot")]

		[Tooltip("What key activates screenshot taking.")]
		[SerializeField]
		private KeyCode takePicKey = KeyCode.F9;

		[Tooltip("Where to save.")]
		[SerializeField]
		private string filename = "SnwScf-screenshot.png";

		[Tooltip("What ration to scale-up to")]
		[SerializeField]
		private int superSize = 8;

		[SerializeField]
		private string filenamePatternForAutomated = "SnwScf-{0}.png";

		private int automatedScreenCapNum;

		#endregion Screenshot

		public void OnGUI() {
			if (!showSize)
				return;

			var sizeMsg = string.Format("Size : {0} x {1}", Screen.width, Screen.height);
			GUI.Label(new Rect(0, 0, 100, 100), sizeMsg);
		}

		public void Update() {
			if (Input.GetKeyDown(takePicKey)) {
				capture(filename);
				return;
			}
			if (Input.GetKeyDown(resizeKey)) {
				resizeWindow();
				return;
			}
			if (Input.GetKeyDown(showSizeToggleKey)) {
				showSize = !showSize;
				return;
			}
		}

		private void capture(string file) {
			Application.CaptureScreenshot(file, superSize);
		}

		private void resizeWindow() {
			int windowWidth = Mathf.CeilToInt(desiredOutputWidth / (float)superSize);
			int windowHeight = Mathf.CeilToInt(desiredOutputHeight / (float)superSize);
			LogR.log(LogR.Level.ALL, "{0} resizing to {1} x {2} (for a x{3} capture to {4} x {5})",
				this, windowWidth, windowHeight, superSize, desiredOutputWidth, desiredOutputHeight);
			Screen.SetResolution(windowWidth, windowHeight, false);
		}

		internal void captureAnotherScreen() {
			var filename = string.Format(filenamePatternForAutomated, automatedScreenCapNum++);
			capture(filename);
		}
	}

}