Как загрузить изображения из файла CSS в JavaFX 8

Question

У меня есть этот файл CSS, который загружает изображения в JavaFX 8 приложения:

#pill-left { 
    -fx-padding: 5; 
    -fx-border-image-source: url("/com/dx57dc/images/left-btn.png"); 
    -fx-border-image-slice: 4 4 4 4 fill; 
    -fx-border-image-width: 4 4 4 4; 
    -fx-border-image-insets: 0; 
    -fx-border-image-repeat: stretch; 
    -fx-background-color: null !important; 
} 
#pill-left:selected { -fx-border-image-source: url("/com/dx57dc/images/left-btn-selected.png"); } 
#pill-left .label { 
    -fx-text-fill: #d3d3d3; 
    -fx-effect: dropshadow(one-pass-box , rgba(0,0,0,0.75) , 0, 0.0 , 0 , -1); 
} 
#pill-left:selected .label { 
    /* -fx-text-fill: black; */ 
    -fx-text-fill: white; 
    -fx-effect: dropshadow(one-pass-box , white , 0, 0.0 , 0 , 1); 
} 
#pill-center { 
    -fx-padding: 5; 
    -fx-border-image-source: url("/com/dx57dc/images/center-btn.png"); 
    -fx-border-image-slice: 4 4 4 4 fill; 
    -fx-border-image-width: 4 4 4 4; 
    -fx-border-image-insets: 0; 
    -fx-border-image-repeat: stretch; 
    -fx-background-color: null !important; 
} 
#pill-center:selected { -fx-border-image-source: url("/com/dx57dc/images/center-btn-selected.png"); } 
#pill-center .label { 
    -fx-text-fill: #d3d3d3; 
    -fx-effect: dropshadow(one-pass-box , rgba(0,0,0,0.75) , 0, 0.0 , 0 , -1); 
} 
#pill-center:selected .label { 
    -fx-text-fill: black; 
    -fx-effect: dropshadow(one-pass-box , white , 0, 0.0 , 0 , 1); 
} 
#pill-right { 
    -fx-padding: 5; 
    -fx-border-image-source: url("/com/dx57dc/images/right-btn.png"); 
    -fx-border-image-slice: 4 4 4 4 fill; 
    -fx-border-image-width: 4 4 4 4; 
    -fx-border-image-insets: 0; 
    -fx-border-image-repeat: stretch; 
    -fx-background-color: null !important; 
} 
#pill-right:selected { -fx-border-image-source: url("/com/dx57dc/images/right-btn-selected.png"); } 
#pill-right .label { 
    -fx-text-fill: #d3d3d3; 
    -fx-effect: dropshadow(one-pass-box , rgba(0,0,0,0.75) , 0, 0.0 , 0 , -1); 
} 
#pill-right:selected .label { 
    -fx-text-fill: black; 
    -fx-effect: dropshadow(one-pass-box , white , 0, 0.0 , 0 , 1); 
} 

Изображения расположены в пакете Java com.dx57dc.images

в Java 7_25 этот код работает, как ожидалось, но в JavaFX 8 B99 Я получаю эту ошибку:

ava.lang.NullPointerException 

at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1129) 

at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:1598) 

at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1520) 

at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:233) 

at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:199) 

at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1249) 

at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:1598) 

at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1520) 

at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:233) 

at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:199) 

at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1249) 

at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:1598) 

at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1520) 

at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:99) 

at com.sun.javafx.tk.quantum.AbstractPainter.paintImpl(AbstractPainter.java:210) 

at com.sun.javafx.tk.quantum.PresentingPainter.run(PresentingPainter.java:95) 

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) 

at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304) 

at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58) 

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 

at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:129) 

at java.lang.Thread.run(Thread.java:724) 

D3D Vram Pool: 13,331,480 used (5.0%), 13,331,480 managed (5.0%), 268,435,456 total 

20 total resources being managed 

4 permanent resources (20.0%) 

1 resources locked (5.0%) 

7 resources contain interesting data (35.0%) 

0 resources disappeared (0.0%) 



D3D Vram Pool: 13,331,480 used (5.0%), 13,331,480 managed (5.0%), 268,435,456 total 

20 total resources being managed 

4 permanent resources (20.0%) 

1 resources locked (5.0%) 

7 resources contain interesting data (35.0%) 

0 resources disappeared (0.0%) 



D3D Vram Pool: 13,331,480 used (5.0%), 13,331,480 managed (5.0%), 268,435,456 total 

20 total resources being managed 

4 permanent resources (20.0%) 

1 resources locked (5.0%) 

7 resources contain interesting data (35.0%) 

0 resources disappeared (0.0%) 

Что такое правильный способ загрузки изображений с помощью CSS в Java 8?

Answer 1

У меня есть структура вроде этого:

view 
|--css 
| |- style.css 
| 
|--img 
    |- image.png 

И использовать изображение, как это:

-fx-background-image: url("../img/image.png"); 

Итак, если

/com/dx57dc/images/

уже по отношению к файлу CSS попробовать предыдущая точка ["./com/dx57dc/images/"], вернитесь в свою общую родительскую папку с (несколькими) "../"

Клаус