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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using MonoTouch.CoreGraphics;
using MonoTouch.Foundation;
using MonoTouch.ObjCRuntime;
using MonoTouch.UIKit;
namespace IPadClient.Controls {
public class TvOutManager : NSObject {
private static TvOutManager sharedInstance;
UIWindow deviceWindow;
private UIWindow tvoutWindow;
NSTimer updateTimer;
UIImage image;
UIImageView mirrorView;
bool done;
bool tvSafeMode;
CGAffineTransform startingTransform;
private int kFPS = 15;
private bool kUseBackgroundThread = true;
public bool UsePrivateAPI = false;
public static TvOutManager SharedInstance() {
if (sharedInstance == null) {
sharedInstance = new TvOutManager();
}
return sharedInstance;
}
public TvOutManager()
: base() {
NSNotificationCenter.DefaultCenter.RemoveObserver(this);
NSNotificationCenter.DefaultCenter.AddObserver(this, new Selector("ScreenDidConnectNotification:"), "UIScreenDidConnectNotification", null);
NSNotificationCenter.DefaultCenter.AddObserver(this, new Selector("ScreenDidDisconnectNotification:"), "UIScreenDidDisconnectNotification ", null);
NSNotificationCenter.DefaultCenter.AddObserver(this, new Selector("ScreenModeDidChangeNotification:"), "UIScreenModeDidChangeNotification ", null);
UIDevice.CurrentDevice.BeginGeneratingDeviceOrientationNotifications();
NSNotificationCenter.DefaultCenter.AddObserver(this, new Selector("DeviceOrientationDidChange:"),
"UIDeviceOrientationDidChangeNotification", null);
}
public void SetTvSafeMode(bool val) {
if (tvoutWindow != null) {
if (tvSafeMode && val == false) {
UIView.BeginAnimations("zoomIn");
tvoutWindow.Transform = CGAffineTransform.MakeScale(1.25f, 1.25f);
UIView.CommitAnimations();
tvoutWindow.SetNeedsDisplay();
} else if (tvSafeMode == false && val == true) {
UIView.BeginAnimations("zoomOut");
tvoutWindow.Transform = CGAffineTransform.MakeScale(.8f, .8f);
UIView.CommitAnimations();
tvoutWindow.SetNeedsDisplay();
}
}
tvSafeMode = val;
}
public void StartTvOut() {
if (UIApplication.SharedApplication.KeyWindow == null)
return;
var screens = UIScreen.Screens;
if (screens.Count() <= 1) {
Console.WriteLine("TVOutManager: startTVOut failed (no external screens detected)");
return;
}
if (tvoutWindow != null)
tvoutWindow.Dispose();
tvoutWindow = null;
if (tvoutWindow == null) {
deviceWindow = UIApplication.SharedApplication.KeyWindow;
SizeF max = new SizeF();
max.Width = 0;
max.Height = 0;
UIScreenMode maxScreenMode = null;
UIScreen external = UIScreen.Screens[1];
for (int i = 0; i < external.AvailableModes.Count(); i++) {
UIScreenMode current = UIScreen.Screens[1].AvailableModes[i];
if (current.Size.Width > max.Width) {
max = current.Size;
maxScreenMode = current;
}
}
external.CurrentMode = maxScreenMode;
tvoutWindow = new UIWindow(new RectangleF(0, 0, max.Width, max.Height));
tvoutWindow.UserInteractionEnabled = false;
tvoutWindow.Screen = external;
// size the mirrorView to expand to fit the external screen
var mirrorRect = UIScreen.MainScreen.Bounds;
var horiz = max.Width / mirrorRect.Width;
var vert = max.Height / mirrorRect.Height;
var bigScale = horiz < vert ? horiz : vert;
mirrorRect = new RectangleF(mirrorRect.X, mirrorRect.Y, mirrorRect.Size.Width * bigScale, mirrorRect.Size.Height * bigScale);
mirrorView = new UIImageView(mirrorRect);
mirrorView.Center = tvoutWindow.Center;
// TV safe area -- scale the window by 20% -- for composite / component, not needed for VGA output
if (tvSafeMode) tvoutWindow.Transform = CGAffineTransform.MakeScale(.8f, .8f);
tvoutWindow.AddSubview(mirrorView);
tvoutWindow.MakeKeyAndVisible();
tvoutWindow.Hidden = false;
tvoutWindow.BackgroundColor = UIColor.DarkGray;
//orient the view properly
if (UIDevice.CurrentDevice.Orientation == UIDeviceOrientation.LandscapeLeft) {
mirrorView.Transform = CGAffineTransform.MakeRotation((float)Math.PI * 1.5f);
} else if (UIDevice.CurrentDevice.Orientation == UIDeviceOrientation.LandscapeRight) {
mirrorView.Transform = CGAffineTransform.MakeRotation((float)Math.PI * -1.5f);
}
startingTransform = mirrorView.Transform;
deviceWindow.MakeKeyAndVisible();
this.UpdateTvOut();
if (kUseBackgroundThread){
new Thread(UpdateLoop).Start();
}
else{
updateTimer = NSTimer.CreateScheduledTimer(1.0/kFPS,this,new Selector("UpdateTvOut:"),null, true );
}
}
}
public void StopTvOut(){
done = true;
if (updateTimer != null){
updateTimer.Invalidate();
updateTimer.Dispose();
updateTimer = null;
}
if (tvoutWindow != null){
tvoutWindow.Dispose();
tvoutWindow = null;
mirrorView = null;
}
}
[Export("UpdateTvOut:")]
public void UpdateTvOut(){
// UIGetScreenImage() is no longer allowed in shipping apps, see https://devforums.apple.com/thread/61338
// however, it's better for demos, since it includes the status bar and captures animated transitions
if (UsePrivateAPI){
CGImage cgScreen = UIGetScreenImage();
if (cgScreen != null){
var sImage = UIImage.FromImage(cgScreen);
mirrorView.Image = sImage;
cgScreen.Dispose();
}
}
else{
UIGraphics.BeginImageContext(deviceWindow.Bounds.Size);
var context = UIGraphics.GetCurrentContext();
foreach (var window in UIApplication.SharedApplication.Windows) {
if ((!window.RespondsToSelector(new Selector("screen"))) || (window.Screen == UIScreen.MainScreen)) {
context.SaveState();
context.TranslateCTM(window.Center.X, window.Center.Y);
context.ConcatCTM(window.Transform);
context.TranslateCTM(-window.Bounds.Size.Width * window.Layer.AnchorPoint.X, -window.Bounds.Size.Height * window.Layer.AnchorPoint.Y);
window.Layer.RenderInContext(context);
context.RestoreState();
}
}
image = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
mirrorView.Image = image;
}
}
private CGImage UIGetScreenImage(){
return CGImage.ScreenImage;
}
[Export("UpdateLoop:")]
public void UpdateLoop(){
using (NSAutoreleasePool pool = new NSAutoreleasePool()){
done = false;
while (!done){
this.InvokeOnMainThread(UpdateTvOut);
Thread.Sleep(67);
}
}
}
[Export("ScreenDidConnectNotification:")]
public void ScreenDidConnectNotification(NSNotification notification){
Console.WriteLine("Screen Connected: " + notification.Object);
this.StartTvOut();
}
[Export("ScreenDidDisconnectNotification:")]
public void ScreenDidDisconnectNotification(NSNotification notification) {
Console.WriteLine("Screen disconnected: " + notification.Object);
this.StopTvOut();
}
[Export("ScreenModeDidChangeNotification:")]
public void ScreenModeDidChangeNotification(NSNotification notification) {
Console.WriteLine("Screen mode changed: " + notification.Object);
this.StartTvOut();
}
[Export("DeviceOrientationDidChange:")]
public void DeviceOrientationDidChange(NSNotification notification){
if (mirrorView == null || done == true)
return;
if (UIDevice.CurrentDevice.Orientation == UIDeviceOrientation.LandscapeLeft){
UIView.BeginAnimations("turnLeft");
mirrorView.Transform = CGAffineTransform.MakeRotation((float)Math.PI * 1.5f);
UIView.CommitAnimations();
}else if (UIDevice.CurrentDevice.Orientation == UIDeviceOrientation.LandscapeRight){
UIView.BeginAnimations("turnRight");
mirrorView.Transform = CGAffineTransform.MakeRotation((float)Math.PI * -1.5f);
UIView.CommitAnimations();
}else{
UIView.BeginAnimations("turnUp");
mirrorView.Transform = CGAffineTransform.MakeIdentity();
UIView.CommitAnimations();
}
}
}
}
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