I have top bar, list and bottom bar.
this.setLayout(new BorderLayout());
this.addComponent(BorderLayout.NORTH, bottomBar);
this.addComponent(BorderLayout.CENTER, list);
this.addComponent(BorderLayout.SOUTH, bottomBar);
List is very long. bottomBar and bottomBar is hide. Scrolling is on the full screen.
How to make that scrolling was only for BorderLayout.CENTER. bottomBar and bottomBar will be visible.
Disable the scrollable in the Form. For example do like this,
Form f = new Form();
f.setLayout(new BorderLayout());
f.setScrollable(false);
f.addComponent(BorderLayout.NORTH, new Label("Top bar"));
f.addComponent(BorderLayout.CENTER, list);
f.addComponent(BorderLayout.SOUTH, new Label("Bottom bar"));
f.show();
Related
How can I implement following design functionality with android standard component bottom sheet:
Image when Bottom sheet dialog fragment will appear:
Image when user scrolled to up to view bottom of content:
I will use ViewPager to scrolling header images and RecyclerView to showing descriptions and other informations. And parallax effect to ImageView(which are placed in ViewPager) when scrolling content vertically. Have a minimum height of the ImageView(and ViewPager), user can't collapse fully it (Look to second screenshot, which is user scrolled until the end of content).
I want stop scrolling ImageView when it will reach to minimum height(look to second one Screenshot), but the content of below ImageView should be continue scrolling
This can be done with an if statement in an on scroll view such as shown below:
ScrollView scrollView = findViewById(R.id.scrollView); //Adjust for your code
ImageView imageView = findViewById(R.id.imageView); //Adjust for your code
boolean imageIsHidden = false;
int threshold = 250;
scrollView.getViewTreeObserver().addOnScrollChangedListener(new OnScrollChangedListener() {
#Override
public void onScrollChanged() {
int scrollY = rootScrollView.getScrollY();
if(scrollY >= threshold){
imageIsHidden = true;
//Move image outside of scroll view so it doesn't scroll
}
else if(scrollY < threshold && imageIsHidden){
imageIsHidden = false;
//Move image inside of scroll view so it does scroll
}
}
});
What this does is has a boolean called imageIsHidden and an integer called threshold. Threshold is where you want it to make it disappear. You will need to play around with this value to find a sweet spot.
You will also need to implement moving the image inside and outside of the scroll view as well in the if and if else statement.
I have a page where I want to have a header always in view at the top and buttons always in view at the bottom. the content in the middle is scrollable.
I thought that this would be easy by doing the following:
StackLayout outer = new StackLayout();
StackLayout inner = new StackLayout();//with all of the content added
ScrollView scroll = new ScrollView();
outer.Children.Add(headerLabel);//non-scrolling
scroll.Content = inner;
outer.Children.Add(scroll); //scrolling
outer.Children.Add(button); //non-scrolling
The headerLabel and the button stay on the corrrect position but the content scrolls right up to the top of the page, over the top of the headerLabel (but beneath/under the button at the bottom).
I am positive it was working correctly but I can't remember changing anything.
Has anyone got any ideas on why this would be happening?
so this fixed it
outer.VerticalOptions = LayoutOptions.End;
and
scroll.IsClippedToBounds=true;
I have an application with two menu bars (application menus and administration menus) on the top row and a search box in between them. The first menu bar is left justified with the search box immediately following while the second menu is right justified. This leaves room for additional application menus without moving the administration menus.
I tried an HBox, but can't get the second menu right justfied.
I tried using an AnchorPane and anchoring the application menu to the left and the admin menu to the right. This works fine until you resize it. When the display gets too small to show both menus it starts truncating letters. I want it to wrap the second menu to the next line.
I tried using a FlowPane which works great for getting one to flow under the other when resized, but I can't get the second menu reliable right justified. I tried a trick of putting a listener on the parent width and calculating the hgap to use, but the first time this gets called, the menu bars have a size of 0 and so the hgap is too big for the actual menus. After I resize it once, that trick works beautifully.
Even better would be a menuBar that could flow automatically so that I didn't have to break it up to allow it to wrap around. But if that capability exists, I've been unable to find it.
AFAIK MenuBar does not support wrapping its Menus.
There can be different approaches to achieve the layout you want. One of them at the below.
To align the second admin flowPane to the right, use HBox.setHgrow for flowPane. To align menu bars in flowPane, use flow.setAlignment(Pos.TOP_RIGHT):
#Override
public void start(Stage primaryStage) {
final Menu menu01 = new Menu("App Menu 1");
final Menu menu02 = new Menu("App Menu 2");
final Menu menu1 = new Menu("Admin Menu 1");
final Menu menu2 = new Menu("Admin Menu 2");
final Menu menu3 = new Menu("Admin Menu 3");
MenuBar menuBar0 = new MenuBar();
menuBar0.getMenus().addAll(menu01, menu02);
menuBar0.setMinWidth(220); // do not shrink
MenuBar menuBar1 = new MenuBar();
menuBar1.getMenus().addAll(menu1);
MenuBar menuBar2 = new MenuBar();
menuBar2.getMenus().addAll(menu2);
MenuBar menuBar3 = new MenuBar();
menuBar3.getMenus().addAll(menu3);
FlowPane flow = new FlowPane(Orientation.HORIZONTAL);
// flow.setStyle("-fx-background-color: gray; -fx-border-color: red"); // visual debug
flow.setAlignment(Pos.TOP_RIGHT);
flow.setHgap(0);
flow.getChildren().addAll(menuBar1, menuBar2, menuBar3);
TextField searchField = new TextField();
searchField.setPromptText("Search here..");
// make it unresizable
searchField.setMinWidth(200);
searchField.setMaxWidth(200);
HBox mainBox = new HBox(5);
mainBox.setAlignment(Pos.CENTER_LEFT);
HBox.setHgrow(flow, Priority.ALWAYS);
mainBox.getChildren().addAll(menuBar0, searchField, flow);
mainBox.setStyle("-fx-background-color: lightgray;");
VBox vBox = new VBox(0);
vBox.getChildren().addAll(mainBox, new Button("Demo"));
Scene scene = new Scene(vBox);
primaryStage.setScene(scene);
primaryStage.show();
}
I have used two scroll bars for controlling brightness and contrast on image after the use i want to reset the scroll bars to their initial value with a button click
I am not getting any links for that to reset scroll bars on button clicks in JavaFX?
The question somewhat unclear. Need explanation of "not getting any links". Some sample code would be helpful. Based on an assumption, try this:
final ScrollBar scrollBar = new ScrollBar();
Button btn = new Button("Reset");
btn.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
scrollBar.setValue(scrollBar.getMin());
// Or if you have stored initial value somewhere use it
scrollBar.setValue(myInitialValue);
}
});
First of all, I'm a long time Java/Swing developer. I recently installed JavaFX 2.2 to play around with.
I'm creating a fairly simple app, whose main window has a toolbar on top and content in the rest of the window. The obvious way to accomplish this is to use a BorderPane, and stick a ToolBar into the top section. So far, so good. However, I would like some of the controls in the toolbar to be at the left edge of the window, and some at the right edge. I can find no way to do this. I can put an invisible spacer object into the toolbar, but I only know how to give it a fixed width; it doesn't resize when the window is resized.
So I thought that instead of using a ToolBar object, I'll just use an HBox; it should be equivalent to a horizontally-oriented Swing Box object, right? And the Swing Box class has a createHorizontalGlue() method that inserts an auto-sizing spacer. Well, I can't find an equivalent in the JavaFX HBox class. Is there no simple way to do this?
I figured out how to do it using an HBox instead of a ToolBar to hold the controls; the key is the HBox.setHgrow() method, which allows you to set a spacer object to grow to fill the available space. I still don't know if it's possible to do this with an actual ToolBar instance.
/**
* Creates and populates the Node that serves as the window toolbar.
*
* #return a newly constructed and populated toolbar component
*/
private Node makeToolbar() {
// Auto-sizing spacer
Region spacer = new Region();
HBox.setHgrow(spacer, Priority.ALWAYS);
// Horizontal box containing toolbar controls
HBox box = new HBox();
box.setPadding(new Insets(8));
box.setAlignment(Pos.CENTER);
box.getChildren().addAll(openButton, spacer, resizeSlider);
// Colored background panel with drop shadow
Pane bgRect = new Pane();
bgRect.setStyle("-fx-background-color: #e0e0e0;");
bgRect.setEffect(DropShadowBuilder.create().width(1).build());
// StackPane to hold box and rectangle
StackPane stack = new StackPane();
stack.getChildren().addAll(bgRect, box);
return stack;
}
i do it this way:
private Node makeFooter(Node left, Node right) {
ToolBar footer = new ToolBar();
Region spacer = new Region();
HBox.setHgrow(spacer, Priority.ALWAYS);
spacer.setMinWidth(Region.USE_PREF_SIZE);
footer.getItems().addAll(left, spacer, right);
return footer;
}
hope i could help someone