slate

[grave hatch]

You need to set the world to the editor preview world of the bp for that to populate

The option at the bottom will only give you editor worlds, not preview ones,

Iirc correctly, one of the fundamental drawbacks of the actor picker (and possibly the component picker?) is that the property editor module doesn't allow you to specify the world.

Even though the underlying widget it uses does allow that.

You encounter all these fun things making asset editors! 😄

[gray jolt]

Oh, that's interesting, I'll have to figure out how to grab a reference to that.

[grave hatch]

It's all in the property editor module. And most of it is private.

[gray jolt]

https://tenor.com/view/laugh-crying-gif-24196106

[grave hatch]

Somebody feels my pain!!! 🙂

[gray jolt]

Well, looks like I've found the option for the scene outliner to be able to specify the UWorld
FInitializationOptions::SpecifiedWorldToDisplay

Now to test

Actually, now to duplicate the component picker since it doesn't allow for those options to be passed through to the scene outliner :/

[celest locust]

Literally me when I found out that STimelineEditor was a thing then finding out its private

[grave hatch]

Iirc correctly, one of the fundamental drawbacks of the actor picker (and possibly the component picker?) is that the property editor module doesn't allow you to specify the world.
Even though the underlying widget it uses does allow that.
THE PAIN

[spiral latch]

Hello all 👋
How can I get UWorld context in a case where I'm binding a function to a FToolMenuEntry button.
Basically want to instantiate (GetWorld()->SpawnActor ... )a bunch of actors on clicking the shelf button available (InitializeActorsImpl is already being called on click)

    PluginCommands->MapAction(
        FMyCommands::Get().InitializeActors,
        FExecuteAction::CreateRaw(this, &IModuleMyEditor::InitializeActorsImpl),
        FCanExecuteAction());

^ Nevermind I was able to get it with UWorld* World = GWorld;
Is this safe? 🤔

[grave hatch]

In the level editor?

Just use gworld.

[gray jolt]

So I manually iterated through GEngine->GetWorldContexts() (of which there were 3 with only my test actor blueprint open) using live coding but haven't found a world that appears to present my actor blueprint's hierarchy. I did confirm though that the world types were [EWorldType::Editor, EWorldType::EditorPreview, EWorldType::EditorPreview].

It doesn't seem as if the blueprint actor editor UWorld generates the edited actor the same way as as a map's UWorld making it so the SceneOutliner widget doesn't work in that context... I'll probably have to abandon SceneOutliner or duplicate and modify it.

[edgy zinc]

Hi guys, I have a newbie question 👋

I am just getting to know Slate by following Unreal official tutorial on Slate, which simply create a new plugin, open up a new tab with a vertical box inside and add a button to that box and bind the button with a method to print log. Then when you press the button, the engine will print log in Output Log window.

My question is, how can I show something in that same box instead of printing to Output Log? The Construct method is only called once and I don't know how to update the tab when I press that button. I tried add a STextBlock but that will only show the default text, and not update when I press the button.

[grave hatch]

You need a reference to the text block in your button. You can set it as a construct parameter.

Of course, you have to add a class variable and a slate argument too.

Or use the container you're adding the button in. Store a reference to the text there. You probably already have a method like this to do your log.

[slate spoke]

do i need unbind my UWidget before pending kill?

UStoragePanelWidget::~UStoragePanelWidget()
{
    UE_LOG(LogTemp, Warning, TEXT("[UStoragePanelWidget::~UStoragePanelWidget]"));
    if (IsValid(StorageComponent))
    {
        StorageComponent->OnStorageSlotsUpdated.RemoveDynamic(this, &UStoragePanelWidget::OnStorageSlotsUpdated);
    }
}

[kind bronze]

I am trying to override the on paint of a custom sCompoundWidget subclass to allow me to draw lines in it. However I am not able to get the lines to draw. My code for the on paint override is as below :

int32 SPlotTicks::OnPaint(const FPaintArgs& Args, const FGeometry& AllottedGeometry,
const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, 
int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) {
FSlateDrawElement::MakeLines(
OutDrawElements,
LayerId,
AllottedGeometry.ToPaintGeometry(),
TArray<FVector2D>{FVector2D(0,100), FVector2D(100, 0)},
ESlateDrawEffect::NoPixelSnapping, 
FLinearColor(1,0,0,1),
false,
10
);
return 1;
}

Wow that came out several orders of magnitude worse that I thought it would. I’ll fix the kerning once I get to a desktop.

[grave hatch]

Bindings to UObjects should remove themselves, but it's never a bad idea to make sure.

[slate spoke]

i get this crash, and don't know, where is problem?

[grave hatch]

Change this so it has proper indentation. 😦

Also I believe you return LayerId, not just 1.

[kind bronze]

Yeah, I was posting from my phone, so I need to get to a desktop to fix it.

[undone scarab]

Hello everyone, I am currently attempting to create a custom color picker widget. I started by copying and pasting the SColorPicker code into my own color picker code for testing purposes. However, when I try to build it, I keep receiving errors regarding SEyeDropper and SColorThemes

[grave hatch]

You can't do it.

Not normally anyway.

Those 2 widgets are private, maybe?, within the Property Editor module.

Or the color themes one might be, the eye dropped you can use I think.

Either way, check their classes. Check where they are defined (private/public) and if they have the property editor API macro.

I know some of the colour picker code is unusable outside of the property editor module because I've implemented my own colour picker. It was something to do with themes. You can update the theme widget or osmething.

[undone scarab]

SEyeDropperButton is located in the private folder but SColorthemes isn't

[grave hatch]

The headers, yeah?

You can look at the dropper code to re-use it. Nothing about how it actually works is unusable, it's just the widget itself.

[undone scarab]

I copied and pasted SEyeDropperButton and SColorThemes like SMyEyeDropper, SMyColorthemes and my custom color picker widget compiled successfully

Yes header is located in the private folder

Is it right way to implement the custom color picker widget?

I just wondering whether am I doing right or wrong..

[grave hatch]

Shrug

The right way with the property editor module died a long time ago.

[undone scarab]

Oh.. I see..

Anyway, thank you!

[grave hatch]

Np. Good luck!

[edgy zinc]

Thank you, you helped me a lot 😄

[grave hatch]

Np!

[celest locust]

is it possible to use IDetailCustomization or whatever the custom property detail thing is, in normal slate? i want to have it show in a k2 node instead of a details panel

[grave hatch]

Everything is possible!

Though I'm not sure how you'd get a blueprint graph node into normal slate.

[celest locust]

you can override TSharedPtr<SGraphNode> CreateVisualWidget() to make custom slate that represents the node

[grave hatch]

So you're creating regular slate in a blueprint graph?

[celest locust]

ye

[grave hatch]

You could literally create a details panel inside hte node 😄

[celest locust]

ye i tried to have a look how its done but maybe i was looking in the wrong sections. i had to create SDetailSingleItemRow which needs FDetailLayoutCustomization which itself needs a bunch of other stuff

id like to just give it a USTRUCT and have it spit out the details slate for me 😅

[grave hatch]

Do you have your own customisation, or are you just trying to use anything built into the engine?

You could use the struct details builder.

[celest locust]

basically just trying to use whats built into the engine

[celest locust]

never heard of this. is that whats used in the engine to build a details panel from a ustruct?

[grave hatch]

Yes.

I don't know where it is or what it's actually called.

But basically there's a create single property thing on the property editor module, but it doesn't work for structs.

You need to use that builder.

[celest locust]

very interesting

ill try to look into this more, thanks

[grave hatch]

Np

[grave hatch]

@celest locust did you find the thing?

[celest locust]

nope lmao. had a look through FPropertyModule at some of the functions that take a UStruct* and the DetailLayoutHelper namespace and didnt find anything

[grave hatch]

@celest locust see this message, it's discussed here somewhere

In fact, it's in that exact message.

[celest locust]

ah thank you so much. ill read up on how to make a IDetailChildBuilder

[grave hatch]

Tbh, it might even be on the IDetailBuilder

Or whatever it is.

[cobalt kestrel]

SBox::ComputeDesiredSize() inside SWidget::CacheDesiredSize(InLayoutScaleMultiplier) computes different desired sizes for the same widget (root is sizeBox with overridden maximum and minimum width) which stays unchanged (by unchanged I mean no relative functions were called by my code) resulting in widget resizing for several ticks.
I doubt that is intentional.
Has anyone encountered such a problem? Should I report that as bug?

Im unable to debug further at the moment as SBox::ComputeDesiredSize() is somewhat recursive and even just evaluated variables can not be watched (debugGame configuration)

[celest locust]

man this is honestly a giant big ass rabbit hole

[celest locust]

is there a way to make SSpinBox expand its width to be the size of its parent?

[celest locust]

how do i make this not resize and turn into a wideboi? using SGridPanel and SSpinBox

[celest locust]

turns out wrapping the SSpinBox in SBox and setting the width solves literally all of my problems

[grave hatch]

SBox is godly.

It's the size box from umg.

[celest locust]

ye.. this is my graphnode source right now

for the graph node in the video i posted

because i cant figure out how to iterate over a struct and pump out slate for it's properties

[grave hatch]

FYourStruct::StaticStruct()->GetProperties() or some such

[celest locust]

ye i know how to iterate over the properties, but i dont know how to generate slate from those which is why i wanted to look at the custom details thingo

[grave hatch]

FPropertyEditorModule::CreateSingleProperty(...)

[celest locust]

am i on crack

[grave hatch]

Probably?

[celest locust]

ngl after writing this entire piece of junk out by hand a bunch of times, i think im actually over slate for a good while. i dont even think i have it in me to rewrite this :( but ill add a trello card to revisit it because this is a maintenance nightmare

[grave hatch]

I've done this multiple times.

It's super fun.

I'm going to do it again today because I need to rework somebody else's code who does the asme thing.

[celest locust]

i mean.. its not like i dont at least partially enjoy it, but by the 5th or 6th iteration of hundreds of lines of code you kind of get over it for a bit. i know its my fault for not exploring this further but still..

[grave hatch]

The hardest part is just the boilerplate that's required to go around it, tbh.

[celest locust]

Ye that's true. I was so tempted to make some macros for it but by the time I wrote all the different macros out it would have taken me ages but would have been quicker to iterate over.

[grave hatch]

Heh

Lambdas! Macros with style.

[celest locust]

Ye but lambdas would force me to write proper c++, with macros I can give it a partial property name like "bar.baz" and have it write out all the slate for property "MyClassPtr->xyz.bar.baz" which is more helpful to this abomination

[wheat dagger]

Anyone know what would cause this to be spammed in the log?
Query 'SlateUI' not ready

[celest locust]

SlateUI not being ready perhaps?

[wild lichen]

~ key doesn't open up the console during play but the shortcut is set in Editor Settings. Is this something related to NVidia cards?

[grave hatch]

Probably not nvidia related.

[kind bronze]

I am making an swidget but no matter what I do the first item I put in the childslot has an actual size of 0,0. The desired size is right, but changing the alignment of the first item has no effect, even including the whole swidget in a size box has no effect. The Swidget itself has the right size but the sbox and everything under it is 0,0

[grave hatch]

"Making an swidget" ?

[kind bronze]

Making a subclass of scompoundwidget

[grave hatch]

The "first item" you put in the child slot?

It only has a single child slot. Are you changing the content?

[kind bronze]

In the childSlot I make an sbox of the size I want the scompoundwidget to be. Then I put the soverlays that include sub scompoundwidgets with their respective sizes

[grave hatch]

Do you specify the size of the sbox?

And what are you adding your custom widget to?

[kind bronze]

I specify the width and height override and a top and left alignment for the sbox. The custom widget is added to an swindow by setting the swindow’s content to be that scompoundwidget as created by SNew(name).

[grave hatch]

Hmm. Should work? 😦

Maybe wrap the widget in an sbox: SWidget -> SBox -> YourWidget

[kind bronze]

Yeah, I am comparing what I have now to other scompoundwidgets I have made that did work, but I am following it closely.

I get the idea that you want to make it hard to hard code sizes instead of allowing for easy scaling, but it shouldn’t be this hard to do that anyways.

[grave hatch]

It's not hard to code specific sizes!

If it still being a dick, try using an SCanvas ? You can literally set the position and size of every element inside it.

SConstraintCanvas is the regular UMG canvas and is a lot harder to work with.

[kind bronze]

At this point I’m not even trying to do specific sizes, I just want a non-zero size.

[kind bronze]

Ok, I think I’ve figured it out. All my windows are “autosized” meaning they take up the minimum needed space. But for some reason the size boxes are not changing the size requested for auto sizing.

I now know why the issue is happening, and knowing is 90% of the battle.

[grave hatch]

Autosize, I think, ignores the set sizes and just calculates the size of the contents and uses that

And if your sbox has no size, its contents may not try to get a size and that means your sbox doesn't need a size

And so on.

[edgy zinc]

How could I create a derived class from SGraphNode? Since Unreal don't support adding that class I added it manually then compiler starts spill out a ton of weird error messages

Here is the header

{
public:
    SLATE_BEGIN_ARGS(STestGraphNode)
        {
        }

    SLATE_END_ARGS()

    /** Constructs this widget with InArgs */
    void Construct(const FArguments& InArgs, UTestEdGraphNode* InNode);
};

And the cpp

BEGIN_SLATE_FUNCTION_BUILD_OPTIMIZATION
void STestGraphNode::Construct(const FArguments& InArgs, UTestEdGraphNode* InNode)
{
    GraphNode = InNode;
    this->GetOrAddSlot(ENodeZone::Center)
    .HAlign(HAlign_Fill)
    .VAlign(VAlign_Fill)
    [
        SNew(STextBlock)
        .Text(FText::FromString("AAAAA"))
    ];
}
END_SLATE_FUNCTION_BUILD_OPTIMIZATION

[upbeat orchid]

Has anyone seen/know of a way to do this?
https://forums.unrealengine.com/t/split-viewport-into-areas-of-different-contents/335038

[grave hatch]

In the editor or at runtime?

[grave hatch]

What are the errors?

[upbeat orchid]

in the shipping game at runtime

[grave hatch]

It's probably possible. You'd have to change how the game's window is set up, though.

[edgy zinc]

Here they are, sir. There are a few more lines below but just the same unresolved errors.

[thick pasture]

Linker errors mean you’re either missing a module dependency, a header file, or didn’t implement a function

Usually a module dependency

[edgy zinc]

Hmm... wonder what am I missing here...

Already included everything that should be enough, really don't know what is missing since all this is just an experiment and no guide to follow 😋

[edgy zinc]

Alright, I'm an idiot

Tried to find some plugin that uses custom graph node and see what module they included that I didn't. Looks like "GraphEditor" is the missing module. Problem solved.

Thank you @grave hatch and @thick pasture 😁

That rises the question, how could I know which module to include when using some engine class, like SGraphNode?

[craggy holly]

Usually you can look at the source class and check the name of the ####_API macro before the class name

In some cases it's missing, but usually the name or the root folder is the same as the module name.

[edgy zinc]

Oh, that's new. I didn't notice that before, thank you a lot 🤗

[edgy zinc]

Next question, is there any setup I need to do in order to use FAppStyle? I tried to mimic the blueprint editor but when I call
&FAppStyle::Get().GetWidgetStyle<FDockTabStyle>("Docking.Tab");
It returns a struct with null resource object, thus doesn't change anything in slate appearance.

[grave hatch]

Are you sure it actually does anything in the editor either?

All you need to do is include the app style header.

[orchid nova]

Does anyone happen to know if SColorPicker can be wrapped into a UMG component to use ingame, or is there some limitations with that?

[grave hatch]

It's a runtime widget.

Only things in /Editor/ are restricted

[edgy zinc]

I'm not sure about it doing anything, really. I means, I don't know how to check if it is working correctly.
I did include the header "Styling/AppStyle.h", still not working

On the other hand, FEditorStyle does work, so things becomes even weirder, since AppStyle::Get() just return a FEditorStyle instance...

Beside, where can I get all the strings that can be pass into FEditorStyle? Does the engine store it somewhere, config file maybe?

[grave hatch]

Search for starship.

[edgy zinc]

Oh, got it, thank you very much :3

[coral schooner]

Anybody familiar with the Common UI Plugin?
Trying to setup the CommonWidgetCarousel with a ..NavBar. The NavBar requires a button widget to be set. I created on that inherits from the UCommonBoundActionButton type and can be set to the to the NavBar.

Though the button itself fails to compile as it says it requires a variable Text_ActionName be set. That variable is read only in Blueprints but has a meta tag 'BindWidget'. The Designer does not allow me to set the variable.

[grave hatch]

Can you set an action?

[coral schooner]

I can give the button blueprint an action, but then every instance of that button would have that action by default. Neither does it set the missing reference

Within c++ there is no way of setting the variable either. It is just queried. The only hint is the 'BindWidget' meta data

[grave hatch]

Oh

You need to create widget called Text_ActionName (a text widget in umg) I think

Or ActionName

It will bind that widget to that variable.

[thick pasture]

The widget needs to be the same name as the binded variable in C++

So in that case Text_ActionName

You can see the binded actions for a widget under the “Bindings” / “Binded Widgets” tab

[coral schooner]

Thanks Cade, that fixed the compile issue. Where do I find that Tab?

[thick pasture]

It would be in the Unreal UMG Designer next to the hierarchy tab

[coral schooner]

Also thanks @grave hatch. Definitely not intuitive

Found it, never new that existed

[grave hatch]

I had forgotten as well. I don't use UMG!

[coral schooner]

So I assume the text is supposed to get the name of an action when auto spawned by the carousel NavBar. Yet they don't get set to anything. How do it set those actions?

Its actually pretty weird, as the buttons already navigate the carousel, thus they don't need actions

[grave hatch]

So just leave the text blank.

[coral schooner]

They are not supposed to be blank. There is no use of a blank button. If I was about to create a settings menu, they should tell "Audio | Graphics | Gameplay | .."

[grave hatch]

Maybe they're not automatic shrug

[coral schooner]

Well, the Widget can't know what it is supposed to name the buttons with. So it definitely requires some additional data from the user.

By statisfying another binding of the Button, I managed to get the default text of the buttons cleared. It overrides the text from a bound action, that the button gets from an action handle. The action handle can only be set via C++...

Seems you still need to do lots of work around that plugin to make it usefull

[grave hatch]

Like a lot of things in UE, it's designed for a specific purpose.

If you deviate, you're going to need to do extra stuff.

[coral schooner]

The specific purpose of that Navbar is to show buttons with (in this specific case) text on it, which is not fullfilled. ^^

[thick pasture]

I might be able to take a look at it later today

[grave hatch]

It might be a misconfiguration.

[coral schooner]

I'm not excluding that possibility.

In order to set the action handle to the buttons, you would need to get the buttons from the NavBar, what is not possible, as the buttons are protected and there is not function or event that gives you access to the buttons. The only way I see is to inherit from the NavBar in C++ first 😢

@thick pasture if you want to take that burden uppon you, that would be nice.

[thick pasture]

Are you trying to create a settings menu with this widget?

I was able to get it working, but yeah I'm not sure if it's possible out of the box to set the button text for each page/tab

None of the functions are virtual either so I'm not sure how you could easily do it either without an engine change or creating your own separate classes

[coral schooner]

Yeah, thats as far as I got. Thank you anyway @thick pasture

[shut trench]

Hi, apologies, I understand this is the slate channel, it just seems closest.
Has anyone managed to set CommonUI up in a workable fashion? I've followed the youtube tutorials and combed the documentation (which, let's face it, doesn't take long), and have reached a situation where:
when I push a settings widget onto my menu stack, it
a) doesn't recieve focus, despite being pushed with exactly the same code as the underlying title or pause widgets, and
b) Only recieves and executes 'back' input on the title menu, not the pause menu, with the only difference I can see being that the pause menu is in-level and therefor has an underlying default pawn, though it is in UI only mode.
I'm really hoping someone here has had similar issues and managed to crack them. If not, still trying. Thanks in advance.

[shut trench]

For anyone wondering you can solve this in the least elegant way possible by setting keyboard focus shortly after activation, and overriding the OnKeyDown event like it's 1995 and you're doing everything straight in DirectX. You can't show your face in public afterwards, but it works.

[grave hatch]

Lol

[thick pasture]

Have you taken a look at Lyra? It has a functional CommonUI setup

It has an additional layer on top of it for layer pushing with ConmonGame, but the core is still there and working

[shut trench]

Yep, downloaded and went through it. That example is a lot more complex than my requirements, and the additional setup they've done appears to be what's driving the success of the system, not the actual core system itself. It does lend a lot of credence to something the Epic team demo said, in that a lot of what's shown in the settings and blueprints actually also requires hooking things together in C++ as well. I have a functional implementation now, but my 2c at least is that something as fundamental as input to UI really should work pretty much straight out of the box. I am a huge fan of Enhanced Input though, that works great.

[celest locust]

It will probably get better over time. Isn't common ui still kind of new?

[thick pasture]

It was added in 4.26 iirc, but yes it will be expanded upon and updated

[celest locust]

maybe by the time 6.x rolls around

[shut trench]

I'm sure it'll improve. Hell, even just expanding the docs will help a lot.

[crimson bone]

Hello all, is there any way to detect with a raycast, or with the widget interaction component, if you are hitting a button inside a widget? Thank you kindly.

[crimson bone]

after continuing my investigation, now I know that the Slate UI framework has the answers...but some enlightenment would be appreciated

[grave hatch]

Honestly no idea. I would go about it something like: Get the point where the ray hits the widget. Convert that to local widget space. Check the area of the button against the hit location in local space.

Or, in that very particular case there, just have 3 widget components.

If it hits any part of each component, it's over the button.

[narrow terrace]

Oh boy... I just finished that section of the compendium, basically the widget component does some extra math to convert it from world space into widget space and then the widget navigation path.
The image is an excerpt from that section(waiting for approval from work to post it, they always approve it because it follows the guidelines but they have to double check for legal reasons)

[shut trench]

Replying to myself with the solution, because that's what all the cool kids do.

1. Your base UI widget should not be a child of class UCommonActivatableWidget, it should be of class UCommonUserWidget.
2. The first menu popped onto the stack should be marked as "As Modal", not just the conifrmation pop-up prompts.

[wind cloud]

Hi guys!
Is it possible to add UUserWidget into slate's construct function?
Like this:

SBorder::Construct(
        SBorder::FArguments()
        .BorderImage(this, &SMultiCodeEdit::GetBorderImage)
        .BorderBackgroundColor(this, &SMultiCodeEdit::DetermineBackgroundColor)
        .ForegroundColor(this, &SMultiCodeEdit::DetermineForegroundColor)
        .Padding(this, &SMultiCodeEdit::DeterminePadding)
        [
            [‘Assign UUserWidget here’]
        ]
)

[grave hatch]

No.

Unless you constructed it somewhere, kept a reference to the uwidget and then added the underlying / backing widget.

[wind cloud]

Do you have an example for this?

[grave hatch]

Is there a reason you need to use a uuserwidget?

[celest locust]

https://tenor.com/view/mr-gold-ouat-gold-rumple-reasons-gif-10731869

[grave hatch]

I'm like sure if you create a widget in umg and then try to just add it to slate, none of the events will work.

(the ones you set up in umg)

[brisk fern]

Where can I find this in UE5?

I remember there was a EpicGames Livestream where they showed I believe a upgraded version of this.

[grave hatch]

I don't think I've ever seen that.

[limber stump]

it was renamed to Starship, and is now found in the insights menu

[grave hatch]

Huh.

Neat

[narrow terrace]

Not just insights, you can open it in the editor or as a standalone app

[grave hatch]

There's also a super useful texture atlas in the widget debugger.

And a plugin called slate icon browser that's cool too

[limber stump]

not for long, lmao https://github.com/EpicGames/UnrealEngine/commit/383ccba5386af95fcdd5e791c777e2e0991f1291

[grave hatch]

I see a plugin coming out to fix that in the future.

[solemn saffron]

What are some things I must include in my code to add a button to the toolbar of a custom editor window?

I want to put a button next to the Save and Browse buttons, similar to what is shown in the below picture (from Epic's Pose Search plugin). I've looked into various source files to try to find the correct approach. I keep thinking I've got it, and my code compiles, but nothing shows up in my asset.

I currently have a child class of the FAssetEditorToolkit class. I initialize, bind commands, extend the tool bar, and fill the tool bar. I must be missing something somewhere though.

Any ideas?

[grave hatch]

Seems you have your button? Or is Build Index not yours?

[solemn saffron]

That's a button from Epic's Pose Search plugin. I was aiming to create something like it for my class.

Thankfully, I managed to get the button on the toolbar to display a few moments ago; however, now I have another issue.

My custom asset is based off the UAnimationAsset class, and I want to keep the same default layout. When using the InitAssetEditor function, how can I tell the engine to use the layout of the UAnimationAsset class? In the below picture, I'm not sure what to place in the red-text portion. I don't need a custom layout.

@grave hatch, whoops, I meant to ping you in my response.

The below picture is the format/layout I want to keep. (The pic is pre-button implementation. To get the button to show, I used InitAssetEditor, but that messed up the entire format.)

[grave hatch]

Just extend the animation asset editor then

[solemn saffron]

I'm not sure why I didn't think of that initially. 🤦🏻‍♂️ Okay, I'll try that now.

Thanks, by the way.

[grave hatch]

Np

[solemn saffron]

I got it. I actually just needed to add tab spawners. This is my first rodeo with editor stuff, so I'm probably stating the obvious.

[gaunt turtle]

I'm trying to use the technique described by BenUI here: https://benui.ca/unreal/button-custom-hitbox/ to get a custom hitbox, however I ran into an issue. I'm trying to do the same for checkboxes instead of buttons and it seems like even if I mark the checkbox as Non hit-testable (Self-only) it still triggers when I hover over it.

Upon some more investigation, it seems like I'm actually hitting an SCheckbox that is inside the UMG checkbox. However I can't find a way to change the visibility of that checkbox, while keeping the other children hit-testable.

Any ideas?

[tired valley]

im making a loading screen in C++, and i want it to fade in over time

but i cant figure out how to change the opacity inside of the slate thread

or more generally, how to tick inside the slate thread. Tick seems to run in the game thread for a SWidget

[grave hatch]

You'd have to store a reference in whatever is running in the slate thread.

Slate in general runs entirely on the game thread.

[warm vault]

I'm trying to change the cursor hit detection for buttons for example with FSlateApplication::Get().SetCursorRadius(30.f);, but it's not working, I tried a bigger value like 200 but doesn't working

[grave hatch]

Have you checked if that cursor radius actually affects if you're hovered over buttons?!

[warm vault]

yep :/

[kind bronze]

To make slate items I need to be in the game thread or slate thread. However, I often want to make a new slate item in response to a user action, not at construction. Is there a way to do this without manually changing the thread, or am I thinking about this the wrong way? I also may need to make multiple new widgets, not just one.

[grave hatch]

All user interaction occurs in the game thread.

And slate doesn't have its own thread outside of loading screens.

[kind bronze]

Yeah, so if I start a game thread with a while loop it hangs, since it continually does that thread and never goes back to the main game thread.

[grave hatch]

You don't start a game thread, the engine does that for you.

I assume you mean, if you do a while loop in the game thread, then, yes, it will block the game thread while that loop executes.

[sick pier]

Hi, is it possible to use the default slate UI components in a game, basically to use the slate window, tabs, menu and toolbars and other widgets inside a UE5 game? Any links on how it would be done? I found some info on how to use slate to write a typical windows app, but that's not what I want to do.

[grave hatch]

You can't use any code inside the editor or developer folders in a game. You can't just use the editor in a game. You can recreate as much of it as you like, though, so it's totally possible to do whatever you like.

[sick pier]

I thought the slate ui was separate to the editor?

[grave hatch]

It is, but you might find things are implemented in the editor.

You aren't going to find the details panel in a game module, for instance.

You can create applications in slate, though. The Epic Launcher, for instance.

[sick pier]

Is the source for that available to us?

[calm ravine]

HI, im trying to dock my SDockTab with: DockTab->GetDockArea()->AddTabToSidebar(DockTab); but it keeps saying " pointer to incomplete class type SDockingArea is not allowed" , anyone know how to start a widget docked ?

[grave hatch]

Of the launcher? No.

[grave hatch]

Include the header for SDockingArea?

[calm ravine]

I tried but even with the header I get the same error :S

[grave hatch]

Which header did you include?

It's probably because hte docking area is in the private slate folder, despite it being exported.

Good luck with that.

I suggest looking for something that calls AddTabToSidebar from another class maybe

Or adding the slate private folder to your build.cs

[calm ravine]

#include "Framework/Docking/SDockingArea.h"
I tried calling it from TabManager, its the same.
okay thanks, I'll try and add the private folder.. 👍

[grave hatch]

Yes

[warm vault]

hey, I tried to change the cursor radius with FSlateApplication::Get().SetCursorRadius(100.f); but the cursor has the same radius, any idea?

[fervent plume]

Is there a way to get the user widget which owns a slate widget if you have a SWidget pointer?

[grave hatch]

Not easily, no.

You have to assume that the slate widget is actually directly owned by the user widget and it's not a child of the one that is owned.

Or it just gets very messy.

[fervent plume]

What would be a way to find/check who the owner of the slate widget is from SWidget? nothing struck me looking through the class

[grave hatch]

GetParentWidget() ?

[narrow terrace]

Yeah it's very one way sort of thing without saving the UWidget that the slate widget is tied to as well

SWidget knows nothing about the UObject framework but UWidget's know about SWidget's

[hasty rapids]

o/ How one goes about fixing this: No focus target for leaf-most node

alos: Attempting to focus a widget that isn't in the tree and visible.

[grave hatch]

Is that from UMG?

And is the widget you're trying to focus actually visible?

[hasty rapids]

No, this is from FActivatableTreeRoot, yes, widgets are ofc visible.
OnInputMethodChangedNative seems activating FActivatableTreeRoot::FocusLeafmostNode() which then resets focus to Viewport

[grave hatch]

Ah. I have no idea then, sorry. 😦

[thick pasture]

Do your activatable widgets have a desired widget to focus set?

[reef cradle]

lets say i have a SColorBlock, how can i chaange its size and color based on some vars held by lets say the player controller?
Im searching my ass of on how to animate slate, and i cant seem to hold a correct pointer to the SColorBlock in the widget.
any hints on either how to do it or where to look?

[grave hatch]

Sure

You'd animate its container or slot for its size

And use a binding for its color

Or set it every tick etc

[reef cradle]

can u explain that? like, how to set up the dynamic stuff for color/size

or link a doc, where this is actually described

[grave hatch]

SNew(SColorBlock)
.ColorAndOpacity(this &SYourWidget::GetColorBlockColor)


FLinearColor SYourWidget::GetColorBlockColor() const { return some color / do your animation stuff / whatever; }```

How you actually do your animation is up to you.

[reef cradle]

gotcha

[grave hatch]

You could also store a reference to your color block

[reef cradle]

huh, yes pls, how

[grave hatch]

TsharedPtr<SColorBlock> MyColorBlock;

SAssignNew(MyColorBlock, SColorBlock);

MyColorBlock->SetColorAndOpacity(some color);``` if that method even exists, check the api.

For the size, you might use a canvas component where you can manually set position and size. Or a constraint canvas where you can set relative position and size.

[reef cradle]

ah, yeah, i wanted to cache the sharedptr as a member var

but that threw a couple erros regarding private shared ref stuff from slate

[grave hatch]

The SConstraintCanvas is the thing used in UMG as a "Canvas"

[reef cradle]

so i could change it in tick

[grave hatch]

SCanvas is a lot simpler.

Of course.

[reef cradle]

SNew(SColorBlock).Color(FLinearColor(0, 0, 0, 1)).Size(FVector2D(20, 20))

the colorblock is pretty neat already in terms of size and color

use slot for align, done

[grave hatch]

You can use the slot for size, too.

You don't need to set a size directly on the color block.

By default (well, depending on teh slot) it will just fill the slot. So change the slot size.

[reef cradle]

yea, i thought it was neater to have it one one obj tho, nothing speaks against it api wise right?

[grave hatch]

Nope.

If the colorblock has a size property, of course.

[grave hatch]

You can generaelly expose the slot itself by doing .Expose(SomeMemberVar) on your SNew/SAssignNew

[reef cradle]

that is weird tho right?

[grave hatch]

And then change properties on teh slot.

No.

Lots of widgets have construction-time inputs that can't be changed later.

[reef cradle]

mkay, so i cant even change the color of the block, hmmm

so gotta go with slot and image?

[grave hatch]

You can definitely change the color.

Using the method I first described, a binding.

[reef cradle]

yeah, with bindings i can do w/e, but weird tho that its not exposed then

just trying to understand WHY its not exposed if i could change it anyways

[grave hatch]

This ^ Just add an FLinearColor member to your class and return that. You can even use a lambda like .ColorAndOpacity_Lambda([this](){ return SomeColorVar; })

(instead of .ColorAndOpacity)

[reef cradle]

yup, already tried and worked, just wanted to decipher this a bit

[reef cradle]

thx a bunch btw

[grave hatch]

Np

[misty summit]

does anyone know how to implement custom shader effects to slate? i'm implementing adobe animates texture atlas support, but in order to properly add filters i need to do some post processing effects on top of different parts of the widget. i've looked at UBackgroundBlur, and slate has FSlateDrawElement::MakePostProcessPass, but as far as i can tell so far this function is specifically tailored to work with background blur, and not for doing actual post process effects?

[thick pasture]

I would check to see what the underlying slate is for UMG’s Retainer Box

[misty summit]

Thanks, i'll take a look

[cobalt kestrel]

Can I somehow tie my code to SWidget::Prepass_Internal() or SWidget::SetDesiredSize() from UUserWidget? I need to manually call USizeBox::SetWidthOverride() after any desired size change

I need to keep button square-sized with a side equal to the height of the text nearby. Height is maintained by fill alignment. If there is a better solution, I would love to hear it :)

UPD I ended up using scaleBox

[celest locust]

For slate you would use SBox which is the same thing. Also your picture gives flashbacks

[grave hatch]

In umg that's a size box

[fiery mural]

I'm trying to change my Slate Brush's ZOrder in Blueprint. Is there a way? I can't seem to find any info about it

[grave hatch]

Blueprint and Slate don't interact.

[mortal vessel]

Hello, Im new to Unreals UI and I am trying to just make a Utexture2D to just like spawn and be the background on my scene. I currently have the texture imported using "FImageUtils::ImportFileAsTexture2D". Is there a way to make that happen with pure c++ without having to create widgets and blueprints and all that ?(I'm sorry if my question is a bit weird)

[grave hatch]

You can use Slate, which is the c++ backer for UMG.

It sounds more like you want a postprocess material or wipe/clear material, though.

[mortal vessel]

So I will need a 3d mesh you mean to apply that material to it ? Is there not a way to have it instantiated in the scene like a 2D Sprite ?
The purpose of this Texture is to be the map background of an Isometric 2D game basically, with a grid on top to place other images on the grid.

[grave hatch]

Seems like a 2d plane is what you want then...

A 3d 2d plane 😂

[astral flicker]

I'm making a lot of Utility Widgets these days. Does anyone know of any market place assets that copy all the UI slate stylings of the Editor so I don't have to recreate those styles if I want them to match in my Utility widgets?

[grave hatch]

Why not just use the editor styles?

[astral flicker]

What do you mean exactly? Are there default styles???

[grave hatch]

The editor has a load of styles for everything.

Search for starship.

[astral flicker]

My apologies "starship"? Search in editor?

[grave hatch]

In the editor c++ code.

Just to check, this is the slate channel, so it's all about c++.

Not umg.

(mostly)

[astral flicker]

I just wanted to know If I had access to the slate styles directly in editor without having to get into the C++

[grave hatch]

No.

[astral flicker]

Well, there you have it.

haha

[grave hatch]

I'm not sure how you're using slate at all without getting into the c++.

[misty summit]

So figured i'd lay some updates here about my progress for any people who search for similar issue, It took me awhile, but slate widgets have an FSlateDrawElement::MakeCustom(which has no goddamn documentation surrounding, and i barely found any examples at all of it's use in the wild). that you can add a custom drawing class to hook into, this gives you an RHICommandList interface and a render target to where to draw your results into(but not the damn widget for some reason, so i had to use a TQueue to push/pop which widget i wanted to draw in order). then after writing a handful of shaders and render passes, i can now have nice blur/drop shadows/etc all exported pretty closely to how adobe animate exports the texture scene.

For example here's what a simple object looks like in adobe animate:

and here's what it looks like in unreal:

[grave hatch]

By custom shader effects do you mean something you might see in a material?

[grave hatch]

That's pretty cool!

[misty summit]

no, i've currently hardcoded the shaders right now, it might be possible to extend with custom filter materials using the material editor, but atm i'm just focusing on trying to get a 1:1 scene export from animate.

[grave hatch]

Ah. I was just thinking you can use materials on slate widgets if you wanted to write custom shader code into a material.

[grave hatch]

You'd have to get the underlying slate widget from the userwidget

Or just use a regular blueprint-based timer

(on your userwidget)

[grave hatch]

Leverage what, exactly? That register tick function from a userwidget? Or leverage the regular tick? Or what exactly do you want to do?

[grave hatch]

Expose them with a bp library.

[grave hatch]

You can.,,

[trail prism]

Heyo! I wanna use SThrobber in loadingscreen to have it moving even during loading. When I launch the project in editor with -game, the throbber is stuck most of the time.

is it an editor behavior or would that happen in build aswell? Whats up with that?

I thought native Throbber works on a different thread

[grave hatch]

Slate works on the game thread. You can set up a different thread for loading screens.

[kind bronze]

I am making a slate overlay with three different items. The first two are made with the declarative syntax, the last is made using SAssignNew on the overlay and adding a slot outside of the declarative syntax to allow me to add it conditionally. Is there a way to manually set the SOverlay slot order or should I do all of this outside of the declarative syntax?

[grave hatch]

You can clear the children and add them in the correct order.

I don't think you can rearrange.

You might be better off just calling the "create in correct order" method in the construct method and be done with it.

[kind bronze]

Yeah based on what I have seen that looks right

So just SAssignNew everything and add it back in one function.

[grave hatch]

It's not like it's a heavy operation. If you store the other 2 widgets in their owner TSharedPtrs on your class, you don't have to recreate them.

Yeah.

[kind bronze]

I guess, it just isn’t as syntactically clean as I would like.

[grave hatch]

You could create 3 widget siwtchers and then 3 copies of each widget and set the widget switchers to the correct widget 😂

[trail prism]

I did make a separate thread to sustain the spinning circle animation but it ensures on the FRunnable not being a slate thread. Wat do!

[granite fjord]

Hi, I am having alignment and size issue in my widget
I have written only functionality in C++ but it gets distorted in Canvas panel even if I set it anchors.
1st Image: Before Compile
2nd Image : After Compile.

I am getting random padding values on compile.

I havent used slate, Do I need to use it if I am doing with C++
https://cdn.discordapp.com/attachments/221799467689574410/1088439541536407593/image.png
https://cdn.discordapp.com/attachments/221799467689574410/1088439541863559198/OnCompileimage.png

[grave hatch]

Honestly I've never created a loading screen slate thread. Try Google. 😦

[grave hatch]

Are you using live coding or hot reload? Is that a skate widget used in umg or directly in slate?

[granite fjord]

I am not using slate, its a UUSerWidget.

Do I need to ?

[grave hatch]

#umg

There's no need to use slate just because you're using c++. Just use some blueprints as well to handle your ui with umg.

[granite fjord]

oh okay, thanks

[chilly nymph]

hello how can I add resources from content browser to the slate I am creating? I am trying to add a texture to an image.

[grave hatch]

An SImage with a FSlateImageBrush

[chilly nymph]

Thanks for the response. How can I fill the FSlateImageBrush with the texture I want?

[grave hatch]

Load the reference the same way you would with any other c++ asset.

And just pass the reference to the slate image constructor

https://docs.unrealengine.com/5.1/en-US/API/Runtime/SlateCore/Brushes/FSlateImageBrush/__ctor/13/

[chilly nymph]

does this look correct?

[grave hatch]

Right click on the image you want to use and do 'copy reference'

Then put that in the TEXT() macro

Put InitialTexture where TEXT("ss") is.

And remove the third line.

[chilly nymph]

i couldnt make it work with FSlateImageBrush but it worked with FSlateDynamicImageBrush

[grave hatch]

👍

[timber belfry]

Is there a function I can set center of the widget to other relative location without transporting widget?

[ocean palm]

when slate refers to absolute coordinates and local coordinates what exactly is it referring to?

• local = based on game/viewport resolution
• absolute = based on monitor resolution

is that correct?

or is is it more like:

• local = based on the widget's parent
• absolute = based on game/viewport resolution

?

[grave hatch]

local would be based on its container

absolute will be the viewport, I guess?

[ocean palm]

I see

[simple delta]

You can't create a separate render thread yourself. You have to use MoviePlayer to play loading screen on a separate render thread.

You create a FLoadingScreenAttributes and set all the attributes yo want. One of the attribute is Widget, that's where you would create your slate widget - SNew(SThrobber).

Then you would do GetMoviePlayer() - >SetupLoadingScreen(Attributes)

And then - optionally - GetMoviePlayer() - >PlayMovie.

[trail prism]

Hey @simple delta, that's exactly what I did already and it gets stuck while loading

no 100% cpu though

So it should still spin

Like, thats what I did before even delving into threads

Because I took MoviePlayer slate thread for granted

I dont know what im doing wrong. The managing of loading is on my own GameInstanceSubsystem

where I create FLoadingScreenAttributes, spawn a SCompoundWidget of my own

not just a throbber but a whole screen, and the SNew(Throbber) within, I hope that's fine

loading tip, text, the throbber, and so on..

[simple delta]

Do you have Slate Global Invalidation enabled by any chance?

Is the line where you do GetMoviePlayer() - >PlayMovie getting hit before it starts loading of map?

[trail prism]

I do have it enabled

the invalidation, globally

I wanted to manually wrap some spammy elements in InvalidationBox

[simple delta]

Yeah, disable it

It should work

[trail prism]

but then I said screw it and did it globally

Huh okay, thank you!! Ill try

[simple delta]

What I do is disable it before loading and enable it right after

[trail prism]

Yes yes, and the movie in the BG plays aswell

and the throbber spins

but then, it often stops completely

[simple delta]

Fortnite enables it just where performance matters - in game hud

[trail prism]

Yeah same here, HUD is pretty chunky already

Aight ill try it, thank you very much!!

[hollow dagger]

how would I add a class selector in my slate UI, preferrably the same one that you see in blueprint editor UI to select a class that extends another one

what's the widget name ^

[grave hatch]

SObjectPickerWIdget probably

Or something like tha t.

Go tools -> debug -> widget reflector and use that to see what the class is in the bp editor.

[ripe lava]

Does anyone know how to create a button that uses an image as its hitbox? I tried looking through SButton's cpp, but I don't really know anything about slate. If someone could point me in the right direction, I would really appreciate that! (to reiterate more clearly, I'm trying to make a button with a non-square hitbox)

[grave hatch]

Use the "SimpleButton" style and put an SImage as its contents.

[ripe lava]

I apologize, but I'm not quite understanding what "SimpleButton" style is or how to use it. Could you do into a bit more detail? I couldn't find anything online.

[grave hatch]

Best place to learn about slate is the engine source. Just search for that string in the code.

[ripe lava]

Okay, Thank you!

[ripe lava]

So I gave it my best shot, but now can't get it to compile and I'm not sure why.

Also are you sure this will achieve this? (Hitbox example):

[grave hatch]

Oooh.

You mean you actually have to click on the light bulb or it doens't register?

Or what?

[ripe lava]

Yes. Like if the button uses a PNG image, the click/hover only registers on the visible image, not the masked out areas. I'm trying to make a point and click game template.

[grave hatch]

Oh erm. I'm not sure that's very easy to do at all.

[ripe lava]

Its possible though, right?

[grave hatch]

Sure. You have 2 options. You either look at the image data or you set up an estimate by covering the image with triangles and hit testing the triangles.

Something like that.

How you do that is your issue! 🙂

[ripe lava]

Alright, well thank you for your help and pushing me in the right direction! If i do end up figuring this out, i'll be sure to share it here.

[grave hatch]

🙂

[true forge]

Does anyone know if there is a problem with the drawbox function

Draw line works perfectly

Tho even if I replace the size and position with just const numbers it still fails to draw

my brush is valid from my understanding

and my paint context works fine for DrawLine

this is getting called on NativePaint

[grave hatch]

Have you tried just drawing an image with your brush instead of a box?

[true forge]

will try that!

[kind bronze]

I am using textures to set the image of an SImage. I have checked that the asset exists in the packaged project, I load the texture with static load object, and all the textures are uproperties so they shouldn’t be garbage collected. In the editor this works fine. In the packaged project I get a “Attempted to access resource for texture which is pending kill, unreachable, or pending destroy” after 0-60 seconds, which I think means it is garbage collected. Is there an easy way to debug or fix this?

[grave hatch]

UPROPERTYs on what?

A UPROPERTY on a non-uobject won't cause a compile error, but also won't actually do anything.

[kind bronze]

On the UTexture2D, and the FSlateBrush that the texture is applied to so I can set the SImage to that.

I also use it on the TCHAR* for the name of the resource but like you said that apparently does nothing, which may be the issue.

[grave hatch]

Don't use uproperty. Get rid of that.

Make your texture member a TStrongObjectPtr<UTexture>

Then it won't be gc'd.

[kind bronze]

I changed the uproperty UTexture2D into a TStrongObjectPtr<UTexture2D> but it still looks like it garbage collects. Does the texture need to be a texture instead of texture2D?

Oh, I didn’t change the SImages to strongptrs. I will do that first.

[true forge]

yea works perfectly in bp

[grave hatch]

Odd!

[kind bronze]

Do I need to be using an fslatedynamicimagebrush for the SImage, or can I use a FSlateBrush instead?

[serene silo]

I am porting some code from 4.27 to 5.1, and it appears SCustomDialog has been removed (UnrealEd package), does anyone know if there is equivalent functionality in another control? I'm just looking for a dialog with configurable buttons.

[grave hatch]

FImageBrush should work.

Probably?

[grave hatch]

That's definitely still in the engine. It may have just been renamed.

[grave hatch]

FMessageDialog::Open

[serene silo]

cheers

[kind bronze]

That worked. Thanks again Daekesh!

[grave hatch]

Np

[ruby remnant]

Is slate going to get deprecated in near future and get replaced completely by UMG? Just asking

[grave hatch]

Not a chance.

It would be, in fact, impossible.

UMG is just a blueprint-accessible wrapper for Slate.

It's not either or.

• the entire editor is written in Slate.

[ruby remnant]

Great

[narrow terrace]

Yeah removing slate, removes UMG

[ripe lava]

So I ended up figuring this out (sort of), but it crashes when packaged because I'm calling the function to read the texture data on the Slate widgets construct (I'm getting access violation error, even though I'm locking the texture data). my gut feeling says i'm calling it too early, where else could I call this from? I thought about doing it in the UMG counterpart (UImageButton), but I really dont know if that would work better, nor do I know how to call a function inside of a slate widget from its UMG counterpart.
`
void SImageButton::SetImageData()
{
const FSlateBrush* ImageBrush = GetBorderImage();
UTexture2D* Texture = Cast<UTexture2D>(ImageBrush->GetResourceObject());
if (Texture)
{
FTexturePlatformData* PlatformData = Texture->GetPlatformData();
if (PlatformData)
{
int32 TextureWidth = Texture->GetSizeX();
int32 TextureHeight = Texture->GetSizeY();

        const FColor* PixelColor = reinterpret_cast<const FColor*>(PlatformData->Mips[0].BulkData.Lock(LOCK_READ_ONLY));
        if (PixelColor)
        {
            AlphaChannelData.SetNumUninitialized(TextureWidth * TextureHeight);
            for (int32 Y = 0; Y < TextureHeight; ++Y)
            {
                for (int32 X = 0; X < TextureWidth; ++X)
                {
                    int32 PixelIndex = X + Y * TextureWidth;
                    AlphaChannelData[PixelIndex] = PixelColor[PixelIndex].A;
                }
            }

            PlatformData->Mips[0].BulkData.Unlock();
        }
    }
}

}
`

Forgot to mention, I added that "if (PixelColor)" and now it doesnt crash, but it just doesnt work in packaged builds.

[grave hatch]

Are you sure your image is being packaged?

[ripe lava]

It shows up in the game (after i made the "if (PixelColor)" change, other wise it crashed when the texture tried to load.)

Here's the error and where it crashes: https://i.imgur.com/LqMIxx1.png

[grave hatch]

Shrug

[ripe lava]

I think it'll work if i can figure out a delayed way to call the function.

[ripe lava]

Okay, so I managed to do it finally!
I abandoned the method of using "BulkData" and switched to using "RHI".
RHI stuff can only be called in the render thread to my understanding, and I managed to get around that with these two snippets of code:

"ENQUEUE_RENDER_COMMAND(SetImageData)([this, Texture](FRHICommandListImmediate& RHICmdList) { "Your code here" });"

and

"if (IsInRenderingThread())"

I'll post the whole thing once I clean it up

[grave hatch]

Nice!

[summer drift]

Anyone here know how I can get the image data from a FSlateMaterialBrush? Such as the material rendered in the preview window?

Writing it to a render target makes the colors wrong, so if it's possible to get just the image data that I can convert myself, it'd be ideal

[grave hatch]

You can't get the result of a material directly. You have to render it to something.

Materials aren't textures.

How are the colours wrong?

[summer drift]

This is in the viewport, the second is the exported image. Way too washed out

[grave hatch]

I think it may be applying gamma twice.

There will be some render target options to adjust that.

[summer drift]

UTextureRenderTarget2D, I didn't change any settings as I pretty much copied from a post lmao

[grave hatch]

If it comes down to it, you can just "unapply" the gamma.

Hmm. Maybe create a render target in the editor and look at the options.

It's a lot easier than examining the cpp source.

[summer drift]

Should I have the widget renderer set bUseGammaCorrection to false instead of true?

[grave hatch]

That's probably it.

[summer drift]

I somehow broke something as now when I try to use the UImageWriteBlueprintLibrary::ExportToDisk function it just tells me "Invalid texture supplied"

[summer drift]

this is without gamma correction, so also not right

[grave hatch]

So it's applying too much gamma?

[summer drift]

I guess so

[grave hatch]

It will be some setting on the render target. Sadly I'm not sure which. 😦

[summer drift]

Might you know why when I try to do the Blueprint trick for doing this, the rendered mat becomes stretched like this?

[grave hatch]

Is Size correct?

[summer drift]

I'd think so, I've set Size to (512, 512) because the main texture is 512x512 and that's the output size I have. And screen position is 0,0 because that should be top left.

changed it to this to not use size in case

I just don't get how in BP the gamma is correct, but in C++ it's not

[grave hatch]

Check what the BP node does...

[spring depot]

Please help me , how can i change jpg file which is stored locally on pc or android and change it to texture and then to slate brush struct so that i can use it to display on widget

[grave hatch]

You want to display a jpg on a slate widget?

[spring depot]

Yes i want to display jog on widget

[grave hatch]

On a slate widget?

[spring depot]

No simple widget

[grave hatch]

What is a "simple widget"?

[spring depot]

I want my jpg file to converted to texture in runtime

This is the thing i facing from a lot of time

Plz help

[grave hatch]

You can load an image with FSlateImageBrush("path", FVector2D(size)) at runtime.

You should probably use FPaths as well to get your content folder's location. Or whatever folder you use.

I would suggest not using content for things that arne't uassets.

[spring depot]

So this will load jpg file directly to slate inage brush ?

[grave hatch]

Yes

[spring depot]

Okk ok plzzz be online for sonetime

I do like this
FSlateBrush * Brush = the code u give

@grave hatch but it shows white color only

[grave hatch]

Checked your output log?

[spring depot]

Nothing come in log

Plszz help

[grave hatch]

No idea.

I assume your path is wrong.

Try stepping through the function.

[spring depot]

File path is correct , i check it

[grave hatch]

^

[spring depot]

Everything seems correct 🥺i stuck in this from many days

[grave hatch]

Did you step through the function?

[spring depot]

Step through the func means ??

Means calling function

Yess

[grave hatch]

No.

It means adding a breakpoint and then pressing f11 a lot.

[spring depot]

Nope , i dont know how to do that

[grave hatch]

https://www.youtube.com/watch?v=oZHMeCaHizY

This might be helpful. Or not. Idk.

[spring depot]

Okk ill check

[mental dawn]

Hello yall, I'm starting to learn Slate and to do so I'm following this Unreal Tutorial https://docs.unrealengine.com/5.0/en-US/slate-editor-window-quickstart-guide-for-unreal-engine/
The problem is: when I open my plugin window, it appears AND the WidgetDebugger displays the EditorMenu but nothing appears on screen..
Do someone knows what I did wrong here ?
Thx in advance

[grave hatch]

That'll be a problem in your spline editor class, not the tab code.

[mental dawn]

in the header file ?

Because when I put the Construct code directly into the Tab content (where _menu is), everything works fine

[grave hatch]

Show your code for the actual spline editor widget.

Oh you did

Ah.

I see your problem.

In your menu you're creating a vertical box but you're not actually putting it in anything

it's the equivalent of: cpp class Moo { Moo() { int x = 5; } };

And then wondering why Moo->x doesn't work.

Your menu widget should extend from SCompoundWidget

And then your construct function should be:

{
  ChildSlot
  [
    SNew(SVerticalBox)
    ...
  ];
}```

[mental dawn]

man...

An entire day wanting to die

you saved my heckin life

god bless your soul 🙏🙏🙏🙏🙏🙏🙏🙏

[grave hatch]

🙂

[sick pier]

Hi, can I open a slate window seperate to the game window so tha tit can be draged to another monitor, and then used UMG in that slate window?

[thick pasture]

and then used UMG in that slate window?

What do you mean by this?

[sick pier]

pop open a slate window, and then use UMG widget system to make a ui in the window.

I am assuming it can't be done in umg itself, opening t he second window that is

[grave hatch]

You can.

You can use FSlateApplication to create a window.

FSlateApplication::Get().somethingsomethingdarkwindow

[spring cape]

Styling Question: I am trying to implement centred button-tabs like Epic did for the Landscape Mode for my own Plugin. Does anyone have any pointers on how to implement this type of styling (and to learn in the process?)

I already have slat based button tabs... but I am using flat styling and they span full width sadly.

[grave hatch]

Use a wrap box?

[spring crescent]

Have you tried pointing the Widget Inspector at that widget?

[spring cape]

Truly thank you - its the Widget 'Reflector' that allows me to understand how things are built.

[spring cape]

They seem to be using SBorder and SText... so I will ditch my SButtons

[spring crescent]

Ah yeah, Reflector, sorry. 😅 Glad to be of help.

[grave hatch]

I always call it the inspector.

[spring cape]

Reflector seems a bit odd of a name imho

[grave hatch]

Yeah.

[cobalt laurel]

Somewhat random but does anyone know if the Quixel plugin ui is a webview or a built with fully custom rendered slate components? Just looking at some different directions for plugin UI development

[low bluff]

Easiest way for you to check that is to open the WidgetReflector and to hover that Window

[grave hatch]

Does the widget reflector even work on the launcher?

[odd copper]

@grave hatch Hi! Would you know why the CustomizeChildren’s content cannot be drawn when using IDetailsView to display the FInstancedStruct variable? I found that ChildBuilder had successfully added the properties by debugging.

[grave hatch]

Do you have a correct base struct set?

[odd copper]

Yes.

[grave hatch]

I don't know, sorry, I've never customised an instanced struct.

Does it work in the regular details panel with instanced structs?

[odd copper]

Yes.

Could you check whether my window creation code is correct?

the window

Create the window

[grave hatch]

I don't see anything particularly wrong with it.

What I would do is put a breakpoint in the customisation code fro your struct and then open something in the regular details view.

See the code path it's following to get to your customisation and what is required to get there.

[grave hatch]

Check the call stack as well.

Go through each call and examine it.

The code and variable values.

[odd copper]

Ok. Thank you!

[grave hatch]

Any luck?

[strong bluff]

If I wanted to make a text tooltip with lots of custom behavior that can create its own children, do you guys think it'd be better to:

1. build off of SToolTip somehow
2. use mouse-entered/etc. events on STextBlock to display a custom widget derived from some other class
3. something else entirely

I'm thinking 2 is probably the best option but I don't know for sure. Pretty new to Slate, not sure what's going to bite me in the long run.

[grave hatch]

I haven't looked at SToolTip, but the only requirement seems to be that you inherit from IToolTip.

If SToolTip basically just does that and adds a standard background and a text field, you can probably re-use it and just replace the contents.

[strong bluff]

I'm guessing most of the functionality I'd want in a more "generic" class is probably also provided to SToolTip through SCompoundWidget, right?

(or by using its child slot, if nothing else)

[grave hatch]

Yeah. Most likely.

You can, in fact, just construct SToolTip with arbitrary content

Using .Content() [ stuff ]

So, yeah, you should probably use SToolTip

[strong bluff]

Neat. Thanks!

[odd copper]

@grave hatch No. But I did some tests

[grave hatch]

So it works perfectly fine if it's not an instanced struct?

[odd copper]

No. See FActorCustom

ActorMoldA

[grave hatch]

I see.

So it just doesn't work at all.

I still think you need to go through the call stack and find where they diverge.

[odd copper]

Okay, I'll try tracing the call stack again. There is so much obscure code that it takes a lot of time to try to make sense of it, but otherwise there is no other way.

[craggy holly]

Do you have a customisation defined for FActorCustom?

Best guess is that a customisation for that is hiding it's properties

[grave hatch]

It apparently works in the main details panel, but not in his custom one.

[craggy holly]

Ooof

[grave hatch]

Exactly.

[livid tendon]

I'm trying to fix a very low framerate in SWebBrowser. Doesn't appear to be a 'real' performance bottleneck, and the browser-based animations run at solid 60fps in chrome, firefox and edge. Things I've tried:

• Subclassing, overriding RebuildWidget to set BrowserFrameRate to 60. No improvement. Verified that it is hooked up correctly by trying framerate of 1, which did in fact run at 1fps.
• Setting "Volatile" for the relevant Slate object(s), which didn't have any perceivable effect

at a bit of a loss what to even try next, any thoughts?

[grave hatch]

It might be our good ol' friend slate throttling.

There's a console command to disable it, I think. Not a clue what it is.

[livid tendon]

hey it's something, thanks!!

[livid tendon]

seems like the issue is probably not throttling, assuming Slate.bAllowThrottling 0 is what disables it

[grave hatch]

Yeah, I think so.

Oh well. 😦

[odd copper]

@craggy holly No. But I found a weird thing. Initially, it can display child layouts.

However, even when I comment out these lines of code, child layouts are still displayed correctly. The only issue is that ComponentAddons is not being drawn properly.

I spent too much time tracing the code without finding a solution, so I decided to proceed to other work.

[pure cave]

So I followed a course. In there a SListView is added to a custom SCompundWidget. I wanted to do the same but instead of creating a new custom widget I just want it to be added to a SDockTab that I create inside the delegate that spawns the tab for my plugin
So I register the tab

FGlobalTabmanager::Get()->RegisterNomadTabSpawner(CourseExampleTabName, FOnSpawnTab::CreateRaw(this, &FCourseExampleModule::OnSpawnPluginTab))
.SetDisplayName(LOCTEXT("FCourseExampleTabTitle", "CourseExample"))
.SetMenuType(ETabSpawnerMenuType::Hidden);

And create the SDockTab in the delegate

return SNew(SDockTab)
  .TabRole(ETabRole::NomadTab)
  [
...
...
+SSplitter::Slot()
[
  SNew(SScrollBox)
  +SScrollBox::Slot()
  [
    SNew( SListView<TSharedPtr<FAssetData>>)
    .ItemHeight(24)
    .ListItemsSource(&SelectedAssets)
    .OnGenerateRow(this, &FCourseExampleModule::GenerateItemRow)
  ]                    
  ]
]

And generate the actual rows

TSharedRef<ITableRow> FCourseExampleModule::GenerateItemRow(TSharedPtr<FAssetData> Item, const TSharedRef<STableViewBase>& OwnerTable)
{
    return SNew(STableRow<TSharedPtr<FAssetData>>, OwnerTable)
        [
            SNew(STextBlock)
            .Text(FText::FromString("Hi"))
        ];
}

But I get an error

So I followed the course and it works if you create a custom widget. Looking at SWidget it turns out that's because it inherits from public TSharedFromThis<SWidget> // Enables 'this->AsShared()'?

And at this point I am totally confused because I don't understand anything anymore

[grave hatch]

class FCourseExampleModule : public TSharedFromThis<FCourseExampleModule>

[pure cave]

Wasn't sure what implications that would have so I didn't do it. So I did that class FCourseExampleModule : public IModuleInterface, public TSharedFromThis<FCourseExampleModule> and it now fails at this

     * Provides access to a shared reference to this object.  Note that is only valid to call
     * this after a shared reference (or shared pointer) to the object has already been created.
     * Also note that it is illegal to call this in the object's destructor.
     *
     * @return    Returns this object as a shared pointer
     */
    [[nodiscard]] TSharedRef< ObjectType, Mode > AsShared()
    {
        TSharedPtr< ObjectType, Mode > SharedThis( WeakThis.Pin() );

        //
        // If the following assert goes off, it means one of the following:
        //
        //     - You tried to request a shared pointer before the object was ever assigned to one. (e.g. constructor)
        //     - You tried to request a shared pointer while the object is being destroyed (destructor chain)
        //
        // To fix this, make sure you create at least one shared reference to your object instance before requested,
        // and also avoid calling this function from your object's destructor.
        //
        check( SharedThis.Get() == this );```

I think I have to take a break from it because I've been looking at this for way too long. Brain just says no and I can't think for myself RN 😓. But thanks Daekesh 👍

[grave hatch]

I think you might be using your module wrong.

[pure cave]

Was curious if I can use a lambda for SCheckBox::OnCheckStateChanged and found that there is SCheckBox::OnCheckStateChanged_Lambda but it's not in the class? using VAX goto implementation goes to SCheckBox::OnCheckStateChanged 😮

[odd copper]

Figure out🙂

But😵‍💫

[grave hatch]

Just use _Lambda. They all have them. They aren't necessarily listed.

[grave hatch]

So you were missing some code?

[pure cave]

I just wonder what other magical functions exist and how to find them

[grave hatch]

_UObject _Raw _Static probably

[pure cave]

I just stumbled over them because I used visual studio search to search the entire solution for lambda 😅

[grave hatch]

The default version is the SP version.

[odd copper]

My previous code. DataRegistryId, bool, and etc were drawn correctly.

[snow relic]

Hi guys! Doe anyone have example of SMeshWidget using? I have found only particles. https://forums.unrealengine.com/t/smeshwidget-hardware-instanced-slate-meshes-thread/58020/6

[hollow dagger]

how can I access another slate widget from a seperate one

even though they don't really know about each other

is there a way I can get all slate widgets visible of a specific class

or is there possibly a way for me to hold a reference to these widgets on creation?

so like on Construct() I'd add them to some sort of static array of widget refs

though I'd need to remove them on Deconstruct somehow

[grave hatch]

No. Unless you add such a feature yourself.

[grave hatch]

Yes. That's what people generally do.

[grave hatch]

Use the destructor?

[hollow dagger]

where should I handle adding and removing

[hollow dagger]

are slate widgets deconstructed whenever they are off-screen? didnt know that

[grave hatch]

I think you're going about tihs very wrong, btw.

[hollow dagger]

I explained it poorly but its probably the right way

[grave hatch]

If you need 2 widgets which have no idea about each other to reference each other, your system probably needs to change.

[hollow dagger]

eh

[grave hatch]

No, they aren't.

They destructed it when all the shared pointers to them are destroyed.

[hollow dagger]

whenever I start a drag I want to look if any inventory widget has something to do with the dragged item, and if it does set a boolean

there can be any amount of inventories on the screen at once

[grave hatch]

Then I would use delegates.

Have a static delegate, something like, "OnMyTHingDragStarted" and have your inventory subscribe to it and your drag operation trigger it.

[hollow dagger]

is there such thing as a global delegate?

oh that's sick

[grave hatch]

Delegates in c++ are 100x more flexible than in BP.

[hollow dagger]

yeah looks like it

I should stop using TFunction aswell lmao

[grave hatch]

Probably

[hollow dagger]

thanks for the help

[grave hatch]

Np

[strong bluff]

Can someone explain (or link to some reference) how SNew can be used with constructor arguments? Or can it? I'm trying to figure out how IsInteractive works with SToolTip, but I'm not sure. Should I just be making my own class with default constructor values, deriving from SToolTip (or implementing IToolTip, either way it's more or less the same I guess).

[grave hatch]

void Construct(FArguments Args (or whatever it's called), Type1 Arg1, Type2 Arg2)

SNew(YourType, Arg1, Arg2)

Personally I like to make mandatory parameters as construct arguments and anything optional as slate_argument/attributes/etc.

[strong bluff]

Does that work similarly to C macros, where I can't pick and choose optionals if they're out of order? i.e. either manually enter defaults until I reach the arg I'm changing, or pass null if applicable

[grave hatch]

I'm pretty sure it does __VA_ARGS__ and then forwards those args to the Construct method.

You need to match the argument list exactly, like any other function.

(other than the FArguments one which is provided by the macro)

[strong bluff]

Alright yeah, that's what I kinda figured. Kinda sucks, but I get it (and understand the mandatory thing you mentioned above a bit better now).

Thanks.

[grave hatch]

Np

[strong bluff]

Alright, still pretty confused.
I figured out it's a slate attribute, so I should be able to set it, and this does seem to work:

return SNew(STextBlock)
            .Text(InRunInfo.Content)
            .TextStyle(&TextStyle)
            .ToolTip(SNew(SToolTip)
                [
                    SNew(STextBlock)
                    .Text(FText::FromString(InRunInfo.MetaData[TEXT("text")]))
                    .TextStyle(&TooltipTextStyle)
                ]
                .IsInteractive(true)
            );```
but all this does is break the tooltip after one use.

Am I misunderstanding what `IsInteractive` actually does? I'm trying to allow the player to interact with the contents of the tooltip, which (according to the docs) is supposed to happen using ctrl when `IsInteractive` is enabled.

[grave hatch]

You have, at least, your ) in the wrong place.

Is "IsInteractive" a property of the outer textblock or the tooltip textblock?

[strong bluff]

It's an attribute of the SToolTip, so it's in the right place. That compiles, at least.

[grave hatch]

Fair enough!

[strong bluff]

Whether or not that's a fault of the macro's leniency or it being actually correct, I have no clue.

[grave hatch]

I'm just used to putting properties before slot stuff, I guess!

[strong bluff]

Didn't even know that worked, the whole slot syntax is mega confusing.

[grave hatch]

E.g. I'd put it before that [, rather than after ]. If it's valid than that's cool.

[strong bluff]

So you're saying:

.ToolTip(SNew(SToolTip)
                .IsInteractive(true)
                [
                    SNew(STextBlock)
                    .Text(FText::FromString(InRunInfo.MetaData[TEXT("text")]))
                    .TextStyle(&TooltipTextStyle)
                ]```

(which also does seem to compile, so fair enough - I do agree that looks a bit cleaner, even though it kinda blows my mind that it works both ways)

Issue remains either way, the attribute being true just breaks the functionality and the ctrl key doesn't seem to do anything at all.

[grave hatch]

That's what I'd do, yeah. But it doesn't overly matter.

It would look even cleaner if you put a newline before SNew 😛

[strong bluff]

True. And Discord kinda screwed the tabs there anyways, but you get the general idea.

[grave hatch]

Yeah!

[strong bluff]

Still mainly confused about the intended functionality, if I'm misunderstanding the behavior of that attribute, or if it's maybe a bug? I dunno.

[grave hatch]

Though I'm not sure what ctrl not working has to do with your original question about construct arguments!

[strong bluff]

Nothing really - it's just what I was trying to get working. Wanted to make sure it wasn't the way I was writing it that was breaking it.

[grave hatch]

I may have been conflating Construct arguments with the slate parameters. Sorry if that was confusing.

[strong bluff]

I initially thought it was a constructor-only argument, rather than an argument and an attribute, which is what it ended up being.

[grave hatch]

What are you expecting to happen? And what actually happens?

[strong bluff]

I assumed the weird/broken(?) behavior was due to me fucking up the syntax and needing to use the constructor, rather than it being just... The behavior in general.

[grave hatch]

Slate is weird/broken in a lot of ways! 😄

[strong bluff]

The docs for IsInteractive seem to indicate that the user holding ctrl would allow them to interact with the tooltip, but setting that doesn't allow that AND it makes the tooltip only fire one time (and then it's disabled indefinitely).

[grave hatch]

Have you had a look at the source to see what it actually does?

[strong bluff]

I wouldn't even know where to look, honestly

[grave hatch]

In the source for SToolTip.

A lot of Slate programming involves checking sources to find out what things actually do.

And copying patterns from the engine!

[strong bluff]

I guess I just have no idea what it actually does, it just looks like a boolean attribute. The source looks like it just uses it to return the value in the function IsInteractive(), which is just a getter of the attribute.

So I'm guessing the functionality is somewhere else, and I'm not sure how I'd search for that. Just ctrl+shift+F for "IsInteractive" and hope it appears somewhere in the project's engine code? I don't know how much of that is hidden away in libraries/the engine itself or whatever, I guess. Still pretty new to this.

[grave hatch]

It should be in the SToolTip class itself.

You'd hope...

[strong bluff]

bool SToolTip::IsInteractive() const
{
    return bIsInteractive.Get();
}```
is all that exists, outside of the constructor/arguments/etc. that handle the SLATE_ATTRIBUTE itself

[grave hatch]

IsInteractive() isn't used anywhere else in teh tooltip code?

[strong bluff]

Nope.

[grave hatch]

Lol

Then, erm, ctrl+shift+f TO VICTORY

[strong bluff]

there's a TON of classes that have their own IsInteractive, none of which are tooltip related or that implement IToolTip
this is going to be SO much fun

thank you cliffy B, thank you unreal engine devs

[grave hatch]

Look at things which implement IToolTip.

Probably your best bet.

[strong bluff]

Yeah. The documentation code, which I'm guessing is the docs viewer... In the editor? Seems to have some custom tooltip logic that uses it. So I guess I'm going there, but nothing useful so far.

[grave hatch]

:/

What exactly do you want to do in your tooltip?

[strong bluff]

Basically, I'm implementing some rich text stuff, using URichTextBlockDecorator. The decorator widgets can spawn tooltips as well, so I'm trying to generate rich text blocks INSIDE that tooltip.

So let's say you've got text that reads "Welcome to New York City!"
you could hover over "New York City" and it'd have a little description
but let's say inside that description is text like "A city full of commerce and skyscrapers, like the Empire State Building"
then you could hover over THAT tooltip's text and it'd open ANOTHER tooltip with a description
and so on, until you run out of patience or links to follow or screenspace

And so far all I can seem to get is the first tooltip, and it's starting to seem like I might just have to use hover events to implement my own, rather than relying on SToolTip at all. Or heavily modify how/when the tooltips spawn, if that'd even be possible.

I'd also want to change the keybind from ctrl to some other behavior probably, but I at least figured I'd give Unreal's default approach a try before I went trying to modify that. But here we are, lol.

[grave hatch]

So you want tooltips to have tooltips?

[strong bluff]

Pretty much. Here's an implementation I did in Godot, although I didn't finish implementing the "close" behavior yet, among other things. Shameless Morrowind placeholder text.

[grave hatch]

I'm not sure that's even supported. Idk.

[strong bluff]

It will be by the time I'm done with it.
...or maybe not, but I'm going to try at least lmfao

I think given the discovery that IsInteractive is maybe not what I was expecting, I'll probably just have to implement this all myself

[hollow dagger]

I'm trying to add a widget at runtime, using GEngine->GameViewport->AddViewportWidgetContent but it crashes with a weird exception

in some random place

ObjectMacros.h 575

[grave hatch]

And the callstack is?

[hollow dagger]

let me get it

huh

[grave hatch]

That'd a GC'd object.

And how are you adding your widget?

Show the code.

[hollow dagger]

Holder is a TOptional<TSharedRef<SWidget>>

thought that'd be able to hold on it

I guess I need to hold the ptr itself

[grave hatch]

Yes...

Also you should use .ToSharedRef() not .GetValue()

[hollow dagger]

GetValue is for TOptional

[grave hatch]

I see.

And where is the widget coming from?

[hollow dagger]

does SNew return the TSharedPtr?

[hollow dagger]

wdym coming from

[grave hatch]

No, it returns a TSharedRef

why is Holder a TOptional...?

[hollow dagger]

well it's a TSharedPtr now but I still use TOptional to reference other widgets

if I do TSharedRef<SWidget> it doesn't compile

it tries to initialize SWidget for some reason

[grave hatch]

Becuase you can't have a TSharedRef without a value...

Is it a class member?

[hollow dagger]

yes

but I'm storing it on Construct

[grave hatch]

Use a TSharedPtr.

[hollow dagger]

from a parent widget

can't really

SharedThis(this) returns a ref

[grave hatch]

Yes you can.

[hollow dagger]

Draggable Window
-> SNew(Window Header)
.Parent(SharedThis(this))

so the header holds a ref to its parent window

so it can move it on drag

is that bad design?

[grave hatch]

No.

[hollow dagger]

huh

[grave hatch]

That's basically what you're meant to do. However, you should store the .Parent value in the window header as a TWeakPtr

[hollow dagger]

I still get the error with TSharedPtr

here's the code

same callstack

[grave hatch]

The declaration of Holder is?

[hollow dagger]

TSharedPtr<SWidget> Holder;

[grave hatch]

Alright. Seems legit.

And what is the object that contains that?

[hollow dagger]

an SItemWidget which I'm certain is still alive when this is called

[grave hatch]

"certain"

[hollow dagger]

well

[grave hatch]

How do you know?

[hollow dagger]

it's held on in like 10 places

plus it's still rendered

there's no reason for it to die

[grave hatch]

Fair.

[hollow dagger]

I can move this somewhere else if you want to double check

[grave hatch]

Are you using UObjects anywhere?

Because you got a UObject crash.

[hollow dagger]

yes but it's not related to this widget I don't think

SItemWidget references a UObject

[grave hatch]

Then it migth not be related to this widget at all.

Something, somewhere, crashed because it's resource object (UTexture/UMaterial) was gc'd.

[hollow dagger]

any way to help debug that?

[grave hatch]

Find any and all references to UObjects you use in slate and check they are referenced properly.

[hollow dagger]

if I remove the spawning of it it all works fine

is that enough to guarantee the issue is within it and not another widget?

[grave hatch]

Probably.

What if you spawn a different type of widget?

Like just an STextBlock instead of the window?

[hollow dagger]

spawning it on Construct instead of OnDoubleClick doesn't crash but it eventually does

will do

I'm just trying to see how the widget looks ingame why is it this painful lmao

[grave hatch]

Why are you using Slate for game ui is the question.

[hollow dagger]

idk I don't like UMG

other than it being a client's request

TextBlock works fine

[grave hatch]

What's the font you're using?

Your Font variable.

[hollow dagger]

for STextBlock?

I'm just using default

not setting it

let me try setting it with my variable

[grave hatch]

For the window...

[hollow dagger]

oh

[hollow dagger]

it's a font defined by UMG theoritically

and it works fine in other areas

[grave hatch]

Font could also be a UObject...

Might not be in this case, but still.

[hollow dagger]

I see

oh it could very well be content

i'm passing that by TSharedRef

[grave hatch]

That shouldn't be a problem.

[hollow dagger]

huh

wouldn't the textblock die?

[grave hatch]

The window will hold a reference to its content automatically. (A regular SWindow would, but this is your class, which may not...)

[hollow dagger]

oh

makes sense yeah

here's the draggable window, might help

huh content is a sharedptr

let me fix that

[grave hatch]

That's "fine"

[hollow dagger]

seems like I fixed it hold on

I had a brush as a FSlateBrush* and it was null

[grave hatch]

That'll do it.

It's checking that, which should hold a uobject, but doesn't...

(because it's just completely null)

[hollow dagger]

I see

thanks for the help!

[grave hatch]

Np

[limpid fractal]

class TITANUMG_API UKeyPrompt : public UImage 
{
    GENERATED_BODY()
    
#if WITH_EDITORONLY_DATA

public:

void SetPrompt(FString InPrompt);
    FString GetCurrentPrompt();
    
    UPROPERTY()
FString CurrentPlatform;

private:
    UPROPERTY()
FString CurrentPrompt;

#endif
    
};

any one knows why variables gets reset after compiling / moving the widget around in UMG ?

[hollow dagger]

given a pointer event how would I get the cursor position within the window

not its absolute screenspace

[grave hatch]

There's a thing to get the window for a widget in FSlateApplication. Then you can use the window's absolute position to work out the cursor local position

... if nothing else works.

[hollow dagger]

hm I'm trying to make my own context menu

trying to spawn a canvas panel where the player right clicks

the position of the slot inside of the canvas panel is what I can't achieve atm

do menus work after packaging or would it only be in editor?

FSlateApplication::PushMenu

[grave hatch]

Should be fine?

Unless that's wrapper in #if WITH_EDITOR

[hollow dagger]

I don't think its wrapped

oh well it works well for now

[grave hatch]

Try compiling in shipping. if it works, you're fine.

[hollow dagger]

I have an SImage with a texture assigned to it but for some reason it just doesnt render the image

it's set

[grave hatch]

Use the widget reflector to see if it's actually got any size.

If it doesn't it might be because:

1. it has no desired size
2. It's too big to be displayed in the given space, so its size is set to 0

[hollow dagger]

fixed it

it was because I was copying the object containing the brush

and it was dying in scope

I should think more about memory when doing this for some reason it's an afterthought lmao

[strong bluff]

Anyone know anything about setting up FSlateHyperlinkRun? I'm trying to call SNew to construct an SRichTextHyperlink, and it needs the former as a required arg for the constructor.
It seems to be loop-related information, so I'm not sure if that's something I can pull from a parent widget or if I have to somehow create it and add it to some manager that throws it into the update loop.

(implements ISlateRun, if that's a little less niche to anyone, maybe)

[grave hatch]

What does that class do? The hyperlink run one.

[strong bluff]

Honestly, no idea. I'm tempted just to not touch it because I mostly wanted it for the hover functionality, but I wasn't sure if there was an easy way to set one up.

I'm curious if these hyperlinks wrap, because if they do I'd like to figure out how. Working with Rich Text Decorators and the widgets get inserted in-line, but if it's a text-based widget (e.g. STextBlock or SRichTextBlock) then there's no way for them to inherit the wrapping from their parent text, because they have to return a brand new widget.

[strong bluff]

the main issue I'm really struggling with is the wrapping honestly
if I use a widget via CreateDecoratorWidget, then I lose wrapping functionality
I could use CreateDecoratorText for styling and whatnot, but then I lose the widget boundaries for getting mouse input, so no hover/tooltips/etc.

this is driving me nuts

[grave hatch]

A run seems to be a portion of text with a single style/application.

E.g. a paragraph with the same style or, in this case, a hyperlink.

[strong bluff]

I don't really get that, since it's a required argument for SRichTextHyperlink which would... also be a portion of text, with a single style/application?

I'm so lost on this, I wish there was some useful documentation out there lmao. Like, I can't even find instances/posts online where people have used basic stuff like this. Is Slate just shit for anything that isn't simple box widgets?

[grave hatch]

It's probalby the part that describes the visual representation of the hyperlink.

[hollow dagger]

my OnKeyDown or OnPreviewKeyDown doesn't get called

I have the widget focused with

FSlateApplication::Get().SetKeyboardFocus(SharedThis(this), EFocusCause::SetDirectly);

but still nothing

[grave hatch]

Which widget?

[hollow dagger]

a custom widget

SItemWidget

[grave hatch]

Do you have any subwidgets in there?

[hollow dagger]

yes

[grave hatch]

Are you sure they aren't intercepting your click?

[hollow dagger]

it's a keyboard click should that really matter

is there a way I can make it work regardless of interception

just on key press

[grave hatch]

Intercepting your key press then.

There's a slate debug mode that tells you what's consuming your input events.

I can't remember how to activate it, though.

[hollow dagger]

that's fine

I can probably figure it out some other time

[spark palm]

Hi, I know very little about C++ and Slate but I hope someone might be able to give me a hand. I followed this wiki article on how to create a loading screen https://unrealcommunity.wiki/loading-screen-243mzpq1

Everything works but I can't figure out how to add my own slate widget to display something, rather than the simple stock throbber.

Could anyone show me what I should write to get a custom slate widget to pop up on my loading screen?

I have this in mygameinstance.cpp so far:

#include "MoviePlayer.h"

void UMyGameInstance::Init()
{
Super::Init();

FCoreUObjectDelegates::PreLoadMap.AddUObject(this, &UMyGameInstance::BeginLoadingScreen);
FCoreUObjectDelegates::PostLoadMapWithWorld.AddUObject(this, &UMyGameInstance::EndLoadingScreen);

}

void UMyGameInstance::BeginLoadingScreen(const FString& InMapName)
{
if (!IsRunningDedicatedServer())
{
FLoadingScreenAttributes LoadingScreen;
LoadingScreen.bAutoCompleteWhenLoadingCompletes = false;
LoadingScreen.WidgetLoadingScreen = FLoadingScreenAttributes::NewTestLoadingScreenWidget();

    GetMoviePlayer()->SetupLoadingScreen(LoadingScreen);
    }

}

void UMyGameInstance::EndLoadingScreen(UWorld* InLoadedWorld)
{

}

[hollow dagger]

I'm still having the issue with this :/

if you find the name of that debug tool would really appreciate it

[grave hatch]

It might be in the widget reflector.

SlateDebugger.Event.Start might be it.

[kind bronze]

Is there a way to convert a slate widget to a PNG? I am working on a project with a window that has slate drawn info that I want to put a button in front of to save. However, I don’t want that button itself saved.

[grave hatch]

You can render it to a target target and then expert it to a file.

How you do either of those I have no idea off hand.

[hollow dagger]

so what does this mean

is SLevelViewport consuming my Key Down?

[weary egret]

yes, but that's also the last layer in the input stack

[opal whale]

quick question: I'm currently building a state machine editor (based off a couple of the editors that UE4 provides since I lack knowledge in making editor tools). I wanted to have 3 tabs displayed horizontally (a list view tab, a graph tab and a details tab) though, only the later 2 are opened by default.

This is how I set the tabs:

    ->AddArea
    (
        FTabManager::NewPrimaryArea() ->SetOrientation(Orient_Vertical)
        ->Split
        (
            FTabManager::NewStack()
            ->SetSizeCoefficient(0.1f)
            ->AddTab(InStateMachineEditor->GetToolbarTabId(), ETabState::OpenedTab) 
            ->SetHideTabWell(true) 
        )
        ->Split
        (
            FTabManager::NewSplitter() ->SetOrientation(Orient_Horizontal)
            ->Split
            (
                FTabManager::NewStack()
                ->SetSizeCoefficient(0.2f)
                ->AddTab(AIStateMachineEditorTabs::GraphViewDetailsID, ETabState::OpenedTab)
            )
            ->Split
            (
                FTabManager::NewStack()
                ->SetSizeCoefficient(0.5f)
                ->AddTab(AIStateMachineEditorTabs::GraphEditorID, ETabState::OpenedTab)
            )
            ->Split
            (
                FTabManager::NewSplitter() ->SetOrientation(Orient_Vertical)
                ->SetSizeCoefficient(0.3f)
                ->Split
                (
                    FTabManager::NewStack()
                    ->SetSizeCoefficient(0.6f)
                    ->AddTab(AIStateMachineEditorTabs::GraphDetailsID, ETabState::OpenedTab)
                    //->AddTab(FBehaviorTreeEditorTabs::SearchID, ETabState::ClosedTab)
                )
            )
        )
    );```
Am I missing anything?

I can only open the tab if I go to Window > then click on its name though

[pure cave]

Did you make any changes after you changed the name to Standalone_StateMachine_Layout_v1?

[opal whale]

yes, do I need to change the name everytime I do a change?

[pure cave]

If so, you have to rename it every time you make a change in the layout

not 100% sure where it saves the layout but it is also mentioned somewhere in code

[opal whale]

gotcha, thank you

[grave hatch]

Resetting your editor layout also works.

[warm vault]

what is the use of IPropertyTypeCustomization?

[grave hatch]

To customise how properties are displayed in the details panel?

[warm vault]

TSharedRef<SVerticalBox> widget = SNew(SVerticalBox)
+ SVerticalBox::Slot()
.HAlign(HAlign_Center)
.VAlign(VAlign_Center)
[
SNew(STextBlock)
.Text(FText::FromString(TEXT("Test button"))).Font(FSlateFontInfo("Arial", 36))
];
GEngine->GameViewport->AddViewportWidgetForPlayer(GetWorld()->GetFirstPlayerController()->GetLocalPlayer(), widget, 1);

I am using this code but the text is not rendering properly

[high hedge]

Issue with the font most likely

Incorrect name or something

[warm vault]

Okay, thank you, I'll check it

[warm vault]

Is there a way to set size for font in STextBlock?

Okay, got it. Size is a blueprint type with No accessibility through any C++ function. Would need to probably set widget through BP

[grave hatch]

You set the size via the font.

Not on the text block directly

[warm vault]

Yes but how do I set size on FSlateFontInfo?

[grave hatch]

In the constructor.

[warm vault]

And what has to be argument for font name?

[grave hatch]

Good question. I only use the default font in the engine.

Bear in mind that you'd have to import the font you want to use if it isn't in the engine already.

[warm vault]

I was making a mistake. I feel today is not the best day. I could simply make a var FSlateFontInfo MYFont and set it's Size

I made the mistake of calling it as a funnction. lol