The web page uses a custom font which is not installed on my PC. In such case, WebView seems to use the default font of the operation system.
But I have the font file "xx.ttf". How can I embed the font into my application and tell WebView to use it to identify the font on the page?
Load the font:
Font.loadFont(
CustomFontWebView.class.getResource("TRON.TTF").toExternalForm(),
10
);
before you use it in the WebView:
style='font-family:"TRON"';
Here is a complete example.
The example relies on a TRON.TTF font which you can download from dafont.
Once you have downloaded the TRON.TTF font, place it in the same directory as CustomFontWebView.java and ensure that your build system copies the TRON.TTF file to the class output directory.
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.text.Font;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
// demonstrates the use of a custom font in a WebView.
public class CustomFontWebView extends Application {
public static void main(String[] args) { launch(args); }
#Override public void start(Stage stage) {
stage.setTitle("TRON Synopsis");
// load the tron font.
Font.loadFont(
CustomFontWebView.class.getResource("TRON.TTF").toExternalForm(),
10
);
// use the tron font in a WebView.
WebView webView = new WebView();
webView.getEngine().loadContent(
"<body bgcolor='silver'>" +
"<div align='center'>" +
"<p style='font-family:'TRON'; font-size:20;'>" + "TRON" +
"</p>" +
"<img src='http://ia.media-imdb.com/images/M/MV5BMTY5NjM2MjAwOV5BMl5BanBnXkFtZTYwMTgyMzA5.V1.SY317.jpg' width='259' height='457'/>" +
"<p style='font-family:'TRON'; font-size:10;'>" +
"A sci-fi flick set in an alternate reality." +
"</p>" +
"</div>" +
"</body>"
);
// layout the scene.
final Scene scene = new Scene(webView, 400, 575);
stage.setScene(scene);
stage.show();
}
}
On use of the Microsoft YaHei font specifically
Microsoft YaHei works fine for me (Windows 7). My Win7 install comes with the font (and it can't be removed), so it doesn't need to be explicitly loaded - just reference the correct font family from your html and it will just work for such a Win7 install. I have a standard US edition of Win7 Pro, not a Chinese version. I did copy the msyh.ttf file from my windows/fonts directory into my project and load it via JavaFX just to make sure the loading via JavaFX works and that also worked fine. The font-family I used to set the html style css font-family specifier was "Microsoft YaHei" (instead of TRON used in the above answer example). The text I displayed to test it was 微软雅黑 and I compared the rendered text by the JavaFX app against the same text rendered in WordPad with Microsoft YaHei selected and the glyphs were identical.
Note that with JavaFX 3.0 is seems you will be able to use the css #font-face mechanism, which means you could declare the font reference in the web page's css rather than in Java code as I did in the above example. Here is a link to the relevant jira issue to track progress on implementation of this feature.
Related
In Vaadin 14, we can set some CSS values programmatically in our Java code.
We can call getElement, then getStyle, and set the name of the CSS property along with a value.
For example, here we set the background color to green.
public class MainView extends VerticalLayout
{
public MainView ( )
{
this.getElement().getStyle().set( "background-color" , "Green" );
How do we do this for a CSS property like background-image that takes an argument of the CSS function named url?
Hard-coding the CSS path does not work.
public class MainView extends VerticalLayout
{
public MainView ( )
{
this.getElement().getStyle().set( "background-image" , "cat.jpg" );
➥ In Vaadin Flow, how to do we use Java to get CSS to find an image such as "cat.jpg"?
Furthermore, what should be the relative or absolute path to that image file be? I understand that the usual place for static images in Vaadin web app is in the src/main/resources folder.
In case of a "Plain Java Servlet" (non-Spring, non-CDI) Vaadin project, the file should go under /src/main/webapp
In case of Spring: /src/main/resources/META-INF/resources/img
Taken from official docs here: Resource Cheat Sheet
And, as #symlink has noticed in the comments, you should use a url('filename') syntax to reference an image in css : CSS background-image Property
For example, if I have a file named cat.jpg inside a /src/main/webapp/images, then this sets it getElement().getStyle().set("background-image","url('images/cat.jpg')");
Here is another example, with the picture file cat.jpg in src/main/webapp without nesting in an images folder. This is a Vaadin 14.0.10 web app, using the Plain Java Servlet technology stack option on the Start a new project with Vaadin page.
Below is the source code for an entire view using this image as a background.
Notice the first line of the constructor, where we pass "url('cat.jpg')" as an argument. See how we used single-quote marks around the file name to embed in a Java string without escaping. Fortunately the CSS specification allows for either single quotes (') or double quotes (") — quite convenient for Vaadin programmers embedding CSS within Java code.
package work.basil.example;
import com.vaadin.flow.component.button.Button;
import com.vaadin.flow.component.notification.Notification;
import com.vaadin.flow.component.orderedlayout.VerticalLayout;
import com.vaadin.flow.router.Route;
import com.vaadin.flow.server.PWA;
/**
* The main view contains a button and a click listener.
*/
#Route ( "" )
#PWA ( name = "Project Base for Vaadin", shortName = "Project Base" )
public class MainView extends VerticalLayout
{
public MainView ( )
{
this.getElement().getStyle().set( "background-image" , "url('cat.jpg')" );
Button button = new Button( "Click me" , event -> Notification.show( "Clicked!" ) );
add( button );
}
}
And a screenshot of this web app in action. The image is cropped because of the short height of the VerticalLayout. The layout is short because it contains only a button, whose label Click me can be seen faintly in blue text on the left edge. The cropped cat’s face is repeated across the page as is the default with CSS.
I'm trying to skin my Java app with Apple's San Francisco font. I've tried every approach I've found, but remain unable to load the SF font while other custom fonts appear to work.
Following is my CSS code, which works if I use the TRON font from this answer but not with the SF fonts. The element with the ID title is a Label object where the text is set in the constructor and in addition to setting the ID, no other operations are performed. From here, I understand that this should work. Any idea why it does not?
(Please note that whenever applicable, I've also tried "San Francisco", "SF, "SF UI" and "SF UI Text" in place of "SF UI Text Regular".)
#font-face {
src: url("SFText-Regular.otf");
}
#title .text {
-fx-font-family: "SF UI Text Regular";
}
I'm using Java 1.8.0_121-b13 and JavaFX 8.0.121-b13.
Other approaches I've tried
The old CSS approach, to no avail:
#font-face {
font-family: "SF";
src: url("SFText-Regular.otf");
}
#title .text {
-fx-font-family: "SF";
}
Loading and setting the font in-line (from here):
title.setFont(Font.loadFont("file:SFText-Regular.otf", 10));
title.setStyle("-fx-font-family: 'SF UI Text Regular';");
And finally separately loading the font (from here):
Font.loadFont(ControlPane.class.getResource("SFText-Regular.otf").toExternalForm(), 10);
title2.setStyle("-fx-font-family: 'San Francisco';");
All of the above work for the TRON font but not for the SF fonts. Is it possible that this issue stems from their design or something like that?
This worked for me:
Downloaded font from:
https://www.fontify.me/cm/28ea2e32b70da0a2480848ba03cd6146/SF-UI-Text-Regular.ttf
That is just a random link from the internet, I don't know if it will stay good.
Placed the downloaded font in the same directory as the sample code below.
Right clicked on the file in OS X and chose "Get Info" to find out the font name.
In this case it is: SF UI Text Regular.
Ran the sample code.
With the SF UI Text Regular font:
With the default font on my OS X 10.9.5 box (commenting out the setStyle line in the code):
The difference is subtle from the low quality screenshots provided, but more apparent when running the two side by side on my PC.
The font I used is a .ttf font rather than a .otf font. I don't know if that makes a difference or not.
Unfortunately, I can't sufficiently explain why the apple falls from the tree.
san-fran.css
#font-face {
src: url("SF-UI-Text-Regular.ttf");
}
SanFranFont.java
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class SanFranFont extends Application {
#Override
public void start(final Stage stage) throws Exception {
Label text = new Label("After dinner, the weather being warm, we went into the garden and drank thea, under the shade of some apple trees...he told me, he was just in the same situation, as when formerly, the notion of gravitation came into his mind. It was occasion'd by the fall of an apple, as he sat in contemplative mood. Why should that apple always descend perpendicularly to the ground, thought he to himself...");
text.setWrapText(true);
text.setPrefWidth(400);
final Scene layout = new Scene(new StackPane(text));
layout.getStylesheets().add(
getClass().getResource("san-fran.css").toExternalForm()
);
text.setStyle("-fx-font-family: \"SF UI Text Regular\";");
stage.setScene(layout);
stage.show();
}
public static void main(String[] args) throws Exception {
launch(args);
}
}
Firstly, I am quite a new guy in coding. I need to embed a font in my java FXML-based app and don't know how to do it. I have pasted the font, fontName.ttf in a "resources" folder in the root of the sources of my project, ie App/src/app/resources. I have set the CSS for the component (text) as
#text {
-fx-font-family: url(resources/fontName.ttf);
}
I have also tried adding inverted commas in the url, ie url("resources/fontName.ttf");, but it doesn't work. I have also set the CSS id for the component, so that can't be the problem. Is there any other working way to do so? I have seen http://fxexperience.com/2010/05/how-to-embed-fonts/, but it doesn't work since I have JDK 1.7 u21. Any ideas for a correct way to embed fonts?
Solution Approach
I updated the sample from Javafx How to display custom font in webview? to demonstrate using a custom true-type font in JavaFX controls styled using CSS.
Key points are:
Place the font in the same location as your application class and ensure your build system places it in your binary build package (e.g. application jar file).
Load the code font in your JavaFX code before you apply a style which uses it.
Font.loadFont(CustomFontApp.class.getResource("TRON.TTF").toExternalForm(), 10);
To use the custom font in a style class use the -fx-font-family css attribute and just reference the name of the font (e.g. in this case "TRON").
Create and load a stylesheet which defines the style classes.
Apply style classes to your controls.
Additional Information
If you are using Java 8, you may be interested in Use web(Google) fonts in JavaFX.
Font Collections
If your font file is in .ttc format, containing multiple fonts in a single file, then use the Font.loadFonts API (instead of Font.loadFont). Note that Font.loadFonts is only available since JDK 9 and is not available in earlier releases.
Sample Output Using a Custom Font
Sample Code
The example relies on a TRON.TTF font which you can download from dafont.
CustomFontApp.java
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.image.*;
import javafx.scene.layout.VBox;
import javafx.scene.text.*;
import javafx.stage.Stage;
// demonstrates the use of a custom font.
public class CustomFontApp extends Application {
public static void main(String[] args) { launch(args); }
#Override public void start(Stage stage) {
stage.setTitle("TRON Synopsis");
// load the tron font.
Font.loadFont(
CustomFontApp.class.getResource("TRON.TTF").toExternalForm(),
10
);
Label title = new Label("TRON");
title.getStyleClass().add("title");
Label caption = new Label("A sci-fi flick set in an alternate reality.");
caption.getStyleClass().add("caption");
caption.setMaxWidth(220);
caption.setWrapText(true);
caption.setTextAlignment(TextAlignment.CENTER);
VBox layout = new VBox(10);
layout.setStyle("-fx-padding: 20px; -fx-background-color: silver");
layout.setAlignment(Pos.CENTER);
layout.getChildren().setAll(
title,
new ImageView(
new Image(
"http://ia.media-imdb.com/images/M/MV5BMTY5NjM2MjAwOV5BMl5BanBnXkFtZTYwMTgyMzA5.V1.SY317.jpg"
)
),
caption
);
// layout the scene.
final Scene scene = new Scene(layout);
scene.getStylesheets().add(getClass().getResource("custom-font-styles.css").toExternalForm());
stage.setScene(scene);
stage.show();
}
}
custom-font-styles.css
/** file: custom-font-styles.css
* Place in same directory as CustomFontApp.java
*/
.title {
-fx-font-family: "TRON";
-fx-font-size: 20;
}
.caption {
-fx-font-family: "TRON";
-fx-font-size: 10;
}
On FXML Usage
Font.loadFont(url, size) is a static method taking two parameters. I don't think you can invoke font.loadFont from FXML and wouldn't advise it if you could. Instead, load the font in Java code (as I have done in my answer) before you load your FXML or style sheet which requires the font.
I know you didn't ask for a pure programmatic way to use a custom TTF font in a java fx application but i thought maybe it helps someone to see a programmatic version:
public class Test2 extends Application {
public static void main(String[] args) {
launch(args);
}
public void start(final Stage primaryStage) {
Group rootGroup = new Group();
// create a label to show some text
Label label = new Label("Demo Text");
try {
// load a custom font from a specific location (change path!)
// 12 is the size to use
final Font f = Font.loadFont(new FileInputStream(new File("./myFonts/TRON.TTF")), 12);
label.setFont(f); // use this font with our label
} catch (FileNotFoundException e) {
e.printStackTrace();
}
rootGroup.getChildren().add(label);
// create scene, add root group and show stage
Scene scene = new Scene(rootGroup, 640, 480, Color.WHITE);
primaryStage.setScene(scene);
primaryStage.show();
}
}
That did the job for me. You can place the font wherever you want just make sure you adapt the path.
You can find a lot more about using fonts inside java fx apps here.
HTH
I mean like in file managers, when you would click, drag the mouse, creating a rectangle selection and after the mouse released selection is created?
I could do that like this (pseude-code like):
onMousePressed:
setGestureStarted(true)
onMouseMoved:
if isGestureStarted:
changeRectangle(event.getX, event.getY)
onMouseReleased:
select(getSelectionRectange())
But I thought that it's pretty common behavior and maybe it's already in framework.
EDIT1:
I was trying to do zoomable linechart. And I actually came across library to do that.
It's pretty good, but could be better though.
Right now I'm considering the actual worth of javaFX in our web project, because I don't like how such thing as zoomable chart is not in the library. Probably would be better with javascript (except I should learn it first, but It shouldn't be that hard).
You would probably need to make your own implementation for this. I found your pseudo code is quiet good. If you like to select for any component then you need to first create a simple rectangular boundary which is easily possible by your pseudo code.
Now for finding out either your node is inside that boundary then you need to do iteration of all the nodes/children of certain Parent Object by using this function: Node Intersect check
I would suggest to use that function after the onMouseReleased or if you like to see things in realtime then it is preferable in onMouseMoved
Your question asks "Is there any implementation of rectangle selection in JavaFX?"
The answer is "yes".
SceneBuilder implements drag-select functionality.
SceneBuilder is open source, so take a look through the source if you are interested on how this behaviour is achieved in JavaFX by SceneBuilder.
SceneBuilderKit is the framework from which SceneBuilder is derived, its source is at the link I provided.
From the SceneBuilder release notes:
JavaFX Scene Builder Kit is an API that allows the integration of Scene Builder panels and functionalities directly into the GUI of a larger application, or a Java IDE, such as NetBeans, IntelliJ, and Eclipse.
where is documentation?
From the release notes:
The javafx_scenebuilder_kit_javadoc-2_0-ea--.zip file, which contains an API javadoc for the JavaFX Scene Builder Kit. You can download the zip file from http://www.oracle.com/technetwork/java/javafx/downloads/devpreview-1429449.html.
The javafx_scenebuilder_kit_samples-2_0-ea--.zip file, which contains the SceneBuilderHello sample application that shows a minimal Java source code example of how the Scene Builder Kit API can be used. This sample is delivered as a NetBeans project. It can be downloaded from http://www.oracle.com/technetwork/java/javafx/downloads/devpreview-1429449.html.
Perhaps after you investigate, SceneBuilder and SceneBuilderKit might not be what you are looking for. In which case, edit your question to make it more explicit and perhaps include source for your rectangle selection implementation attempt and more detail on your requirements (what you intending to select, an image showing how the feature works, etc).
yes, in jfxtras-labs project via:
MouseControlUtil.addSelectionRectangleGesture(Parent root, Rectangle rect)
or
MouseControlUtil.addSelectionRectangleGesture(Parent root, Rectangle rect, EventHandler<MouseEvent> dragHandler, EventHandler<MouseEvent> pressHandler, EventHandler<MouseEvent> releaseHandler)
more info: http://jfxtras.org/doc/8.0labs/jfxtras/labs/util/event/MouseControlUtil.html
Note that selection behavior is extremely application specific and the class above is just a helper class to help you with selection gesture implementations. In the end you have to implement selection behavior yourself.
For a more detailed and matured example of node selection in JavaFx see my other answer here.
Edit: Basic Demo
This is the basic usage. Note that it's just a demo and should NOT be considered final or production ready! For more complex implementation of selection behavior you should tailor it (mostly mouse handlers) on your own based on your application's specific requirements.
import java.util.ArrayList;
import java.util.List;
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.AnchorPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Rectangle;
import javafx.scene.shape.Shape;
import javafx.stage.Stage;
import jfxtras.labs.util.event.MouseControlUtil;
public class ShapeSelectionExample extends Application {
private List<Shape> selected = new ArrayList<>();
#Override
public void start(Stage primaryStage) {
final Group shapesGroup = new Group();
final AnchorPane root = new AnchorPane(shapesGroup);
// Add whatever shapes you like...
Rectangle shape1 = new Rectangle(200, 20, 50, 50);
Rectangle shape2 = new Rectangle(300, 60, 50, 50);
Circle shape3 = new Circle(100, 100, 30);
shapesGroup.getChildren().addAll(shape1, shape2, shape3);
final Rectangle selectionRect = new Rectangle(10, 10, Color.TRANSPARENT);
selectionRect.setStroke(Color.BLACK);
EventHandler<MouseEvent> mouseDragHanlder = new EventHandler<MouseEvent>() {
public void handle(MouseEvent event) {
for (Node shape : shapesGroup.getChildren()) {
handleSelection(selectionRect, (Shape) shape);
}
}
};
// Add selection gesture
MouseControlUtil.addSelectionRectangleGesture(root, selectionRect, mouseDragHanlder, null, null);
primaryStage.setScene(new Scene(root, 400, 300));
primaryStage.show();
}
private void handleSelection(Rectangle selectionRect, Shape shape) {
if(selectionRect.getBoundsInParent().intersects(shape.getBoundsInParent())) {
shape.setFill(Color.RED);
if(!this.selected.contains(shape))
this.selected.add(shape);
} else {
shape.setFill(Color.BLACK);
this.selected.remove(shape);
}
System.out.println("number of selected items:" + this.selected.size());
}
public static void main(String[] args) {
launch(args);
}
}
This is how the result would look like:
You could also write mouse press and release handlers (currently null in this code) to handle selection behavior while mouse button is pressed or released (which is different to mouse drag).
Maybe a simple question but I'm having alot of trouble making a button change the view of a Flex blackberry playbook app. I am coding it entirely in actionscript, no MXML.
myButton.addEventListener(MouseEvent.CLICK, doSomethingOnClick);
private function doSomethingOnClick(e:MouseEvent):void {
navigator.pushView(view.Login, "testdata");
}
When I try this I get:
1120: Access of undefined property navigator.
Which is weird as it works in a MXML file. How do I change views in actionscript?
Thanks
Phil
EDIT:
Cheer J_A_X, but now i have:
navigator = new ViewNavigator();
navigator.pushView(net.airpoint.assessments.view.Login, " ");
TypeError: Error #1009: Cannot access a property or method of a null object reference.
Apologies, as I realise this is really simple stuff but it just isnt clicking!
Update 2
*Assessments.as*
package
{
import flash.display.Sprite;
import flash.events.Event;
import net.airpoint.assessments.view.*;
import qnx.ui.core.Container;
import qnx.ui.core.ContainerAlign;
import qnx.ui.core.ContainerFlow;
import qnx.ui.core.Containment;
import qnx.ui.text.Label;
import spark.components.ViewNavigator;
[SWF(height="600", width="1024", frameRate="30", backgroundColor="#FFFFFF")]
/* Main Layout */
public class Assessments extends Sprite
{
//containers
private var main:Container;
private var menu:Container
private var firstLabel:Label;
private var navigator:ViewNavigator;
public function Assessments()
{
initializeUI();
}
private function initializeUI():void
{
main = new Container();
main.padding = Vector.<Number>([20,20,20,20]);
main.flow = ContainerFlow.HORIZONTAL;
main.debugColor = 0xFFCC00;
firstLabel = new Label();
firstLabel.text = "First label";
firstLabel.size=35;
main.addChild(firstLabel);
addChild(main);
navigator = new ViewNavigator();
navigator.pushView(Login, " ");
}
}
}
Login.as
package net.airpoint.assessments.view
{
import flash.display.Sprite;
import flash.events.MouseEvent;
import qnx.ui.buttons.Button;
import qnx.ui.core.Container;
import qnx.ui.text.Label;
import qnx.ui.text.TextInput;
import spark.components.View;
public class Login extends View
{
private var usernameLabel:Label;
public function Login()
{
initializeUI();
}
public function initializeUI():void
{
usernameLabel.text = "test";
this.addChild(usernameLabel);
}
}
}
Something isn't right. If it's a Flex Mobile Project, you need an Application at the top level (you know, like how Flash Builder created the project with an mxml file). Either you create an actionscript file that extends Application as mentioned here or you just use an mxml file for the root component.
However, your argument to 'not use mxml' is redundant if you're using Flex components. If you're using Flex components, you're using mxml no matter what, so there's no performance increase. If anything, RIM is recommending to use AS only because their SDK is AS only (which is idiotic anyways). You could always add their UI component through AS in mxml files.
So really, the point is moot and you should just use mxml anyways since it's better than straight AS for UI layout and skinning. Either that or go Pure AS with no Flex components.
I think using Sprite is ok in an ActionScript project.
But if you're using ActionScript instead of Flex just because of the QNX components, then you could switch your project to Flex and follow these instructions to use the QNX components there: Using qnx.ui.picker.Picker in mobile Flex Hero project for Blackberry Playbook