GWT CustomScrollPanel 示例 [英] GWT CustomScrollPanel example

问题描述

我了解了 GWT 的 CustomScrollPanel 以及如何自定义滚动条，但我找不到任何示例或如何设置它.是否有任何示例显示正在使用的自定义滚动条?

I found out about GWT's CustomScrollPanel and how you can customize the scroll bar, but I can't find any examples or how to set it up. Are there any examples out there that show custom scrollbars in use?

推荐答案

这是您自定义本机滚动条的方式，但是您也可以开发自己的滚动条类，以实现更可自定义的 VerticalScrollbar 和 Horizo​​ntalScrollbar.

This is how you would customize the native scrollbars, however you could also develop your own scrollbar classes that implement VerticalScrollbar and HorizontalScrollbar that are a lot more customizable.

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资源(样式)定义:

Resource (style) definitions:

public class ScrollResourcesContainer {

    public interface ScrollPanelResources extends CustomScrollPanel.Resources
    {
        @Override
        @Source( { "ScrollPanel.css", CustomScrollPanel.Style.DEFAULT_CSS } )
        CustomScrollPanel.Style customScrollPanelStyle();
    }

    public interface HorizontalResources extends NativeHorizontalScrollbar.Resources
    {
        @Override
        @Source( { "HorizontalScrollbar.css", NativeHorizontalScrollbar.StyleTransparant.DEFAULT_CSS } )
        NativeHorizontalScrollbar.Style nativeHorizontalScrollbarStyle();
    }

    public interface VerticalResources extends NativeVerticalScrollbar.Resources
    {
        @Override
        @Source( { "VerticalScrollbar.css", NativeVerticalScrollbar.StyleTransparant.DEFAULT_CSS } )
        NativeVerticalScrollbar.Style nativeVerticalScrollbarStyle();
    }
}

通过 CustomScrollPanel 使用:

    CustomScrollPanel csp = new CustomScrollPanel((ScrollResourcesContainer.ScrollPanelResources) GWT.create(ScrollResourcesContainer.ScrollPanelResources.class));
    csp.setHorizontalScrollbar(new NativeHorizontalScrollbar((HorizontalResources) GWT.create(HorizontalResources.class)),
    AbstractNativeScrollbar.getNativeScrollbarHeight());
    csp.setVerticalScrollbar(new NativeVerticalScrollbar((VerticalResources) GWT.create(VerticalResources.class)),
    AbstractNativeScrollbar.getNativeScrollbarWidth());

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