I'm using ::RunAppModalLoopForWindow(WindowPtr) to run a carbon window as modal. But at some point I need to show/hide all application's windows with:
NSArray* windowNumbers = [NSWindow windowNumbersWithOptions:0];
for (NSNumber* windowNumber in windowNumbers)
{
NSWindow* window = [[NSApplication sharedApplication] windowWithWindowNumber:[windowNumber integerValue]];
[window setAlphaValue:CGFloat(showFlag)];
}
But window is NSCarbonWindow* that does not respond to setAlphaValue, and thus, the window is not changing its visibility.
Also, I don't know where NSCarbonWindow is defined so I can cast from NSWindow to NSCarbonWindow.
How about:
if ([window respondsToSelector: #selector(setAlphaValue:)])
[window setAlphaValue:CGFloat(showFlag)];
else if (showFlag)
ShowWindow( [window windowRef] );
else
HideWindow( [window windowRef] );
Related
I can show my custom NSWindowController as modal window by code:
TSAppDelegate* appDelegate = (TSAppDelegate*) [[NSApplication sharedApplication] delegate];
NSWindow* mainWindow = appDelegate.window;
[NSApp beginSheet: [self window]
modalForWindow: mainWindow
modalDelegate: NULL
didEndSelector: NULL
contextInfo: NULL];
int acceptedModal = (int)[NSApp runModalForWindow: [self window]];
[NSApp endSheet: [self window]];
[[self window] close];
It works. But I need non modal window. It has to appear as modal (see pic) and be NON MODAL.
I tried
TSAppDelegate* appDelegate = (TSAppDelegate*) [[NSApplication sharedApplication] delegate];
NSWindow* mainWindow = appDelegate.window;
[[self window] setParentWindow: mainWindow];
or
[mainWindow addChildWindow: [self window] ordered: NSWindowAbove];
It works as non modal but appears as normal popup window.
Is it possible?
It seems that you just want a window to come down over your view but not be modal.
Rather than use a sheet, you could just use a separate view that you animate into and out of position.
You'll have to do some work yourself: setting the correct position, animating the view, responding to events, etc.
I am switching my NSWindow from normal mode to fullscreen, by setting its frame (I know there is a method for the view to go fullscreen, but it needs to be this way)
In my NSOpenGLView I am tracking the onMouseMove event...
After switching to fullscreen (or back), I have to click the view (inside window), to receive the mouseMove event. It looks like it is going out of focus, but I don't understand why (I am just using setFrame) and how to make it focused again, without the user needing to click the window.
Code in my NSOpenGLView (NSView):
if (!fullscreenOn) {
//!switch to fullscreen mode
NSRect mainDisplayRect = [[[self window] screen] frame];
[[self window] setStyleMask:NSBorderlessWindowMask];
[[self window] setFrame:[[self window] frameRectForContentRect:mainDisplayRect] display:YES animate:NO];
[[NSApplication sharedApplication] setPresentationOptions: NSApplicationPresentationAutoHideMenuBar | NSApplicationPresentationAutoHideDock];
fullscreenOn = YES;
} else {
[[self window] setStyleMask:NSTitledWindowMask | NSClosableWindowMask | NSMiniaturizableWindowMask | NSTexturedBackgroundWindowMask];
[[NSApplication sharedApplication] setPresentationOptions: NSApplicationPresentationDefault];
... some code for the right size ...
[[self window] setFrame:frame display: YES animate: YES];
fullscreenOn = NO;
}
the problem was with setting [[self window] setStyleMask:NSBorderlessWindowMask]; which cause this behaviour... making the window borderless by default fixed the problem
I have a custom NSWindow subclass that the user can toggle the display of with the click of a button. I'd also like the window to disappear when the window resigns key status (e.g. by the user clicking outside the window).
I have a delegate that implements windowDidResignKey: but I find that this delegate method is only invoked the first time the window resigns key.
Here's how I toggle the display of the window (via user action or windowDidResignKey):
- (void) toggleWindowAtPoint:(NSPoint)point
{
// Attach/detach window.
if (!attachedWindow)
{
attachedWindow = [[CustomWindow alloc] attachedToPoint:point];
attachedWindow.delegate = self;
[attachedWindow setLevel:NSMainMenuWindowLevel+1]; // show window in front of all other apps on desktop
[attachedWindow makeKeyAndOrderFront:self];
}
else
{
attachedWindow.delegate = nil;
[attachedWindow orderOut:self];
[attachedWindow release];
attachedWindow = nil;
}
}
Here's my implementation of windowDidResignKey:
- (void) windowDidResignKey:(NSNotification *)note
{
[self toggleWindowAtPoint:NSMakePoint(0, 0)];
}
I'm finding that the first time the custom window is displayed, windowDidResignKey: gets called. Every time the custom window is re-displayed after that, windowDidResignKey: is not getting invoked.
The issue was that in some cases, the custom window was not actually becoming the key window after calling [attachedWindow makeKeyAndOrderFront:self].
I fixed this by adding the following line before re-creating the window:
[[NSApplication sharedApplication] activateIgnoringOtherApps:YES];
In the context of the code snippet above:
- (void) toggleWindowAtPoint:(NSPoint)point
{
// Attach/detach window.
if (!attachedWindow)
{
[[NSApplication sharedApplication] activateIgnoringOtherApps:YES];
attachedWindow = [[CustomWindow alloc] attachedToPoint:point];
....
Have you tried calling [attachedWindow makeFirstResponder:attachedWindow] in your toggle method?
If you want to activate a window without using activateIgnoringOtherApps: you should use a NSPanel with a NSNonactivatingPanelMask:
[[CustomPanel alloc]
initWithContentRect: NSZeroRect
styleMask: NSNonactivatingPanelMask
backing: NSBackingStoreBuffered
defer: NO];
I am attempting to create two UIWindows because I would like two UINavigationControllers on screen at the same time on my app. I initialize two windows in my app delegate but only one window's view is displayed. Does anyone know why this is so?
Here is the code I used:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UIViewController * controller1 = [[UIViewController alloc] init];
[controller1.view setBackgroundColor:[UIColor grayColor]];
UINavigationController * nav1 = [[UINavigationController alloc] initWithRootViewController:controller1];
[window addSubview:nav1.view];
[window makeKeyAndVisible];
UIWindow * window2 = [[UIWindow alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
UIViewController * controller2 = [[UIViewController alloc] init];
[controller2.view setBackgroundColor:[UIColor yellowColor]];
UINavigationController * nav2 = [[UINavigationController alloc] initWithRootViewController:controller2];
[window2 addSubview:nav2.view];
[window2 makeKeyAndVisible];
NSLog(#"%#", [[UIApplication sharedApplication] windows]);
return YES;
}
The gray from the first window is visible, but the yellow from the second is not. The output from this is:
"<UIWindow: 0x591e650; frame = (0 0; 768 1024); opaque = NO; autoresize = RM+BM; layer = <CALayer: 0x591e7a0>>",
"<UIWindow: 0x5923920; frame = (0 0; 100 100); layer = <CALayer: 0x59239a0>>"
which means the second window is created and added to the application, but just not displayed. Does anyone know why this is so?
Thanks in advance!
The two UIWindow's windowLevel property is equal, they are all UIWindowLevelNormal.
If you want the second UIWindow display font of the first UIWindow, You should set the second UIWindow's windowLevel value bigger. Like:
window2.windowLevel = UIWindowLevelNormal + 1;
PS:
[window makeKeyAndVisible];
...
[window2 makeKeyAndVisible];
There is only one keyWindow at a time, The key window is the one that is designated to receive keyboard and other non-touch related events. Only one window at a time may be the key window.
Just use a UISplitViewController.
Or try MGSplitVIewController if you need to customization. It might have what you need.
I've discovered how to get the second UIWindow to display. You must set the clipsToBound property to YES. Otherwise, the view from one of the windows will completely cover the other view. The two windows were properly added and visible after all.
This might be a really old post but I just run into the same problem. Some coding mistakes where already answered but the main issue we have here is how you instantiating the UIWindow.
Here is a Swift example how to display another UIWindow correctly.
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow? = UIWindow(frame: UIScreen.mainScreen().bounds)
let newWindow = UIWindow(frame: UIScreen.mainScreen().bounds)
// save a reference to your Window so it won't be released by ARC
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
self.window!.rootViewController = SomeViewController()
self.window!.makeKeyAndVisible()
// in your example you have created the window inside this method,
// which executes correctly and at the end of this method just releases the window,
// because you never saved the reference to the window
self.newWindow.rootViewController = SomeOtherViewController()
self.newWindow.windowLevel = UIWindowLevelStatusBar + 1.0
self.newWindow.hidden = false
return true
}
}
Btw. you don't have to create a UIWindow in AppDelegate. It depends on your code behavior.
try this code...
id delegate = [[UIApplication sharedApplication] delegate];
[[delegate FirstView] presentModalViewController:SecondView animated:YES];
I'm creating a reusable framework for displaying notifications in an iOS application. I'd like the notification views to be added over the top of everything else in the application, sort of like a UIAlertView. When I init the manager that listens for NSNotification events and adds views in response, I need to get a reference to the top-most view in the application. This is what I have at the moment:
_topView = [[[[UIApplication sharedApplication] keyWindow] subviews] lastObject];
Would this work for any iOS application or is their a safer/better way to get the top view?
Whenever I want to display some overlay on top of everything else, I just add it on top of the Application Window directly:
[[[UIApplication sharedApplication] keyWindow] addSubview:someView]
There are two parts of the problem: Top window, top view on top window.
All the existing answers missed the top window part. But [[UIApplication sharedApplication] keyWindow] is not guaranteed to be the top window.
Top window. It is very unlikely that there will be two windows with the same windowLevel coexist for an app, so we can sort all the windows by windowLevel and get the topmost one.
UIWindow *topWindow = [[[UIApplication sharedApplication].windows sortedArrayUsingComparator:^NSComparisonResult(UIWindow *win1, UIWindow *win2) {
return win1.windowLevel - win2.windowLevel;
}] lastObject];
Top view on top window. Just to be complete. As already pointed out in the question:
UIView *topView = [[topWindow subviews] lastObject];
Usually that will give you the top view, but there's no guarantee that it's visible to the user. It could be off the screen, have an alpha of 0.0, or could be have size of 0x0 for example.
It could also be that the keyWindow has no subviews, so you should probably test for that first. This would be unusual, but it's not impossible.
UIWindow is a subclass of UIView, so if you want to make sure your notification is visible to the user, you can add it directly to the keyWindow using addSubview: and it will instantly be the top most view. I'm not sure if this is what you're looking to do though. (Based on your question, it looks like you already know this.)
Actually there could be more than one UIWindow in your application. For example, if a keyboard is on screen then [[UIApplication sharedApplication] windows] will contain at least two windows (your key-window and the keyboard window).
So if you want your view to appear ontop of both of them then you gotta do something like:
[[[[UIApplication sharedApplication] windows] lastObject] addSubview:view];
(Assuming lastObject contains the window with the highest windowLevel priority).
I'm sticking to the question as the title states and not the discussion. Which view is top visible on any given point?
#implementation UIView (Extra)
- (UIView *)findTopMostViewForPoint:(CGPoint)point
{
for(int i = self.subviews.count - 1; i >= 0; i--)
{
UIView *subview = [self.subviews objectAtIndex:i];
if(!subview.hidden && CGRectContainsPoint(subview.frame, point))
{
CGPoint pointConverted = [self convertPoint:point toView:subview];
return [subview findTopMostViewForPoint:pointConverted];
}
}
return self;
}
- (UIWindow *)topmostWindow
{
UIWindow *topWindow = [[[UIApplication sharedApplication].windows sortedArrayUsingComparator:^NSComparisonResult(UIWindow *win1, UIWindow *win2) {
return win1.windowLevel - win2.windowLevel;
}] lastObject];
return topWindow;
}
#end
Can be used directly with any UIWindow as receiver or any UIView as receiver.
If you are adding a loading view (an activity indicator view for instance), make sure you have an object of UIWindow class. If you show an action sheet just before you show your loading view, the keyWindow will be the UIActionSheet and not UIWindow. And since the action sheet will go away, the loading view will go away with it. Or that's what was causing me problems.
UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
if (![NSStringFromClass([keyWindow class]) isEqualToString:#"UIWindow"]) {
// find uiwindow in windows
NSArray *windows = [UIApplication sharedApplication].windows;
for (UIWindow *window in windows) {
if ([NSStringFromClass([window class]) isEqualToString:#"UIWindow"]) {
keyWindow = window;
break;
}
}
}
If your application only works in portrait orientation, this is enough:
[[[UIApplication sharedApplication] keyWindow] addSubview:yourView]
And your view will not be shown over keyboard and status bar.
If you want to get a topmost view that over keyboard or status bar, or you want the topmost view can rotate correctly with devices, please try this framework:
https://github.com/HarrisonXi/TopmostView
It supports iOS7/8/9.
Just use this code if you want to add a view above of everything in the screen.
[[UIApplication sharedApplication].keyWindow addSubView: yourView];
try this
UIWindow *window = [[[UIApplication sharedApplication] windows] lastObject];
UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
if (![NSStringFromClass([keyWindow class]) isEqualToString:#"UIWindow"]) {
NSArray *windows = [UIApplication sharedApplication].windows;
for (UIWindow *window in windows) {
if ([NSStringFromClass([window class]) isEqualToString:#"UIWindow"]) {
keyWindow = window;
break;
}
}
}