I've read the documentation of this attribute:
An additional flag to be used with 'snap'. If set, the view will be snapped to its top and bottom margins, as opposed to the edges of the view itself.
https://developer.android.com/reference/com/google/android/material/appbar/AppBarLayout.LayoutParams.html#scroll_flag_snap
But I can't observe any actual effect in my app. What margin are they talking about? Every margin on the CollapsingToolbarLayout (on which this attribute is set) completely destroys the layout.
Not sure if it's useful yet, but here is the difference:)
If you pass snap as scroll flag, then it will move your view (in my case this search bar, it's linearLayout) to it's edge NOT INCLUDING the margin_layout
Then I've tried snap|snapMargin and it moved with the margin
P.S. No idea why snapMargin doesn't work without snap ¯\_(ツ)_/¯
This attribute is responsible for a scrolling behavior of AppBarLayout and its children. You can apply it directly to AppBarLayout or on the inside views, in the xml layout of your AppCompatActivity. It has to be an instance of AppCompatActivity if you want to use AppBar features. Also, the design library must be included in Gradle dependencies, like so: implementation 'com.android.support:design:26.1.0'
Please refer this link:-[https://medium.com/#tonia.tkachuk/appbarlayout-scroll-behavior-with-layout-scrollflags-2eec41b4366b][1]
Related
I am using 'com.android.support.constraint:constraint-layout:2.0.0-alpha5'.
I have a fragment using MotionLayout inside an activity that also carries a BottomNavigationView inside a CoordinatorLayout with a custom behaviour allowing to show and hide when the content is scrolled.
With all fragments, where there is no MotionLayout, this behaviour works perfectly. Only with the MotionLayout, which has a NestedScrollView as a child, and makes use of an onSwipe transition, this swipe seems to be consumed, and does not arrive at the activity's coordinator layout.
Is this a current limitation of how MotionLayout works, and is it possible to extend it to support my use case?
i am new to GWT and GWTP and the question sounds stupid.. Can I make an abstract PresenterWidget or similiar?
Like in normal Java extending the "class" and reuse / extend the logic. But not only the class, the whole thing of View and Presenter. I try to explain my initial situation and maybe you have another idea.
The image hopefully helps to explain it. The "Main-Tab" and every other tab consists of a collection of views which have the same base structure and the same logic.
the base structure consists of
border around EVERYTHING
an image (the wwitch)
a title
a textarea
a PresenterWidget which is added to a contentSlot of the parent (the menu left)
and below the base are view specific components like buttons, text or any other widget. So a main part of the view with logic is repeading. If the switch is "toggled" the view is hidden (the textarea and any childs / view specific components) like the lowest view in the picture. Furthermore the PresenterWidget left changes the color.
The logic is working, but now I am searching a proper way to solve this without repeading code and the possibility to add child elements which are hidden as well by toggling the switch. Can I add to a PresenterWidget child widgets and define where there should be added? like: Even if this is possible, it feels a bit inconvenient.
Thanks in advance.
I just want to post the solution:
I have now a simple Composite (KPICommonView) for the switch, title and the description. It got another FlowPanel below the description, where the specific components will be added later. For this the Composite implements "HasWidgets" and overrides the "add(Widget w)"-method which is called by UiBinder if the Widget is added and has child elements.
<own:KPICommonView title="First Header" description="I am a happy description :)" anchorToken="{nameAnchors.getFirst}">
<g:Label>child component</g:Label>
</own:KPICommonView>
I am not sure if I do a PresenterWidget for every segment and every PresenterWidget has one of the KPICommonView added, or if I do one normal Presenter which adds more than one of the CommonViews.
The CommonView furhter creates the PresenterWidget for the menu item on the side. It gets the attributes from the constructor (anchorToken, title) and adds it to the slot (which happens ugly, because the View has hard coded the parent saved to call "addInSlot()". The repeading code for the switch is handled by the KPICommonView.
Background/Context:
I have a HBox as a parent and many child Nodes (Buttons, TextFields, Labels…). The HBox is a child of other container (BorderPane/VBox/Grid)
My questions:
How do I dynamically remove/exclude the parent (HBox) and all its children from layout?
I am looking for some three-state property on Node (like in Microsoft WPF):
Visible – visible and participate in layout
Collapsed – is not visible and do not participate in layout (applies to its children as well)
Hidden – is not visible but participate in layout
http://msdn.microsoft.com/en-us/library/ms590101.aspx
What options does JavaFX offer?
My solutions so far:
hBox.setManaged(false);
this work only for HBox, its children are still present
root.getChildren().remove(hBoxTop);
root.getChildren().add(hBoxTop);
Well, this looks like it could work.., but for example in case of root being BorderPane, once I remove/add and remove the HBox, the space after it remains unused. I already tried requestLayout() but id does not force thr rrot to fill it. Am I missing something? Is it correct approach to this problem?
Edited:
Well, I got this working.
Dynamically removing and adding for this specific case can be achieved by:
Remove:
root.setTop(null);
Add:
root.setTop(hBoxTop);
When I did not call setTop(null) on removal, BorderPane still reserved space for HBox (even after removal from its children).
IMHO: it is not very good model as it is parent-container specific. For example if I change, BorderPane to VBox a I had to change these methods as well. For VBox, remove/add on children collection works but I need to remember index so that HBox appears at same place after calling add.
Using root.setTop(null) is not a good idea because as you say it's specific to BorderPane.
I think the best solution is to use:
root.getChildren().remove(yourPane);
And use layout methods to place your other childrens as you want.
But maybe you should not use a BorderPane in the first place with the behaviors you want in your application.
Notice you can also do root.getChildren().clear() to remove all component and add it again to your layout but differently.
I'm trying to add a image carousel to my CMS site and in the process learn about Alternatives.
I've go the following content types
BannerImage (TextField and a MediaPicker field)
ImageGallery (Container)
I've created a bunch of images, added them as 'Containables' to a new ImageGallery and
I then create a widget, put it in BeforeContent and it renders as an ugly list (default rendering)
I have been able to customize the images by using the alternative Content-BannerImage.Summary.cshtml, sweet.. so far so good.
BUT I'm not able to customize the rendering of the ImageGallery at all. The alternative
Content-ImageGallery.Summary.cshtml or .Detail or even Widget-Container.cshtml do not work at all.
The alternative that IS being used is Widget.Wrapper.cshtml which came with the theme I'm using. I'm not able to find the correct alternative so I can prevent the ImageGallery from rendering it's name/title (which it does by default from the Widget.Wrapper.cshtml alternative.
Any help is greatly appreciated and before it's mentioned... I've read http://docs.orchardproject.net/Documentation/Accessing-and-rendering-shapes which is a great doco, but I'm too dumb to figure it out :)
Ta
To create an alternate (not alternative) for a widget, you first have to activate the Widget Alternates module.
Once you have done so, create your widget, and activate the Shape Tracing module. Go to the page where the widget appears, click on the shape tracing button on the bottom right corner to show the shape tracing and select your widget.
You should now see a list of possible alternates for your widget. Select one and click the link to create it. Now you just have to edit it to your taste.
Depending on how the image gallery module you're using is working, the shape that you need to override to render the list of images. It is probably the List shape that you need to change. This article should give you a good starting point: http://weblogs.asp.net/bleroy/archive/2011/03/27/taking-over-list-rendering-in-orchard.aspx
I'm using JUNG2 to draw some graphs.
This is the image I get:
http://img841.imageshack.us/img841/205/graphvizkk3312164f020b4.png
I'd like to:
1) change the rendering order (labels should be the last objects to be drawn);
2) add a semi-transparent background to the labels.
3) change background color of the whole image.
Any idea on how to do this?
The JUNG2 documentation is not very extensive on these issues.
Mulone
(1) To do this you'd have to hack the rendering code; I don't believe that we support this at the moment.
UPDATE: I took a closer look. Actually JUNG does support this without hacking the existing libraries; the easiest way is perhaps to subclass BasicRenderer and then override the render() method so that things happen in the order that you want. (I recommend that you render vertices after edges.) Once you do that, you create an instance of your custom Renderer, and call VisualizationViewer.setRenderer(customRenderer).
(2) The labels respect HTML code (i.e., surround your label with <html></html> and then put whatever tags you like in it).
(3) BasicVisualizationServer (and its subclasses, e.g. VisualizationViewer) inherit from JComponent, which defines setBackground(Color).