# Paddle 组件
某些时候，工具栏长度会超过屏幕宽度，这样会导致工具栏内容被遮挡。paddle组件在工具栏内容被屏幕遮挡时会在工具栏两端显示按钮，点击两个按钮左右翻动工具栏就可以显示被隐藏的内容。
箭头是paddle button:
# 代码示例
<html>
<template id="layout-template">
<webpdf>
<toolbar>
<paddle>
<div class="flex-div">
<hand-button></hand-button>
<selection-button></selection-button>
<zoom-dropdown></zoom-dropdown>
<create-note-button></create-note-button>
<create-text-highlight-button></create-text-highlight-button>
<create-strikeout-button></create-strikeout-button>
<create-underline-button></create-underline-button>
<create-squiggly-button></create-squiggly-button>
<create-replace-button></create-replace-button>
<create-caret-button></create-caret-button>
<create-typewriter-button></create-typewriter-button>
<create-callout-button></create-callout-button>
<create-textbox-button></create-textbox-button>
<create-drawings-dropdown></create-drawings-dropdown>
<create-area-highlight-button></create-area-highlight-button>
<create-pencil-button></create-pencil-button>
<eraser-button></eraser-button>
<stamp-dropdown></stamp-dropdown>
<create-measure-dropdown></create-measure-dropdown>
<create-attachment-button></create-attachment-button>
<create-image-button></create-image-button>
<create-link-button></create-link-button>
</div>
</paddle>
</toolbar>
<div class="fv__ui-body">
<viewer></viewer>
</div>
</webpdf>
</template>
</html>
<style>
.flex-div {
display: flex;
}
.fv__ui-toolbar {
border: 1px solid #ddd;
}
</style>
<script>
var CustomAppearance = UIExtension.appearances.Appearance.extend({
getLayoutTemplate: function() {
return document.getElementById('layout-template').innerHTML;
},
disableAll: function(){}
});
var libPath = window.top.location.origin + '/lib';
var pdfui = new UIExtension.PDFUI({
viewerOptions: {
libPath: libPath,
jr: {
licenseSN: licenseSN,
licenseKey: licenseKey
}
},
renderTo: document.body,
appearance: CustomAppearance,
addons: []
});
</script>
paddle 组件的 exclude-devices 参数可以配置在指定的设备类型上隐藏左右翻动按钮，并允许用户在触摸屏上左右拖动显示被遮挡的内容。
<html>
<template id="layout-template">
<webpdf>
<toolbar>
<!-- exclude all tablet devices -->
<paddle exclude-devices="tablet">
<div class="flex-div">
<hand-button></hand-button>
<selection-button></selection-button>
<zoom-dropdown></zoom-dropdown>
<create-note-button></create-note-button>
<create-text-highlight-button></create-text-highlight-button>
<create-strikeout-button></create-strikeout-button>
<create-underline-button></create-underline-button>
<create-squiggly-button></create-squiggly-button>
<create-replace-button></create-replace-button>
<create-caret-button></create-caret-button>
<create-typewriter-button></create-typewriter-button>
<create-callout-button></create-callout-button>
<create-textbox-button></create-textbox-button>
<create-drawings-dropdown></create-drawings-dropdown>
<create-area-highlight-button></create-area-highlight-button>
<create-pencil-button></create-pencil-button>
<eraser-button></eraser-button>
<stamp-dropdown></stamp-dropdown>
<create-measure-dropdown></create-measure-dropdown>
<create-attachment-button></create-attachment-button>
<create-image-button></create-image-button>
<create-link-button></create-link-button>
</div>
</paddle>
</toolbar>
<div class="fv__ui-body">
<viewer></viewer>
</div>
</webpdf>
</template>
</html>
<style>
.flex-div {
display: flex;
}
.fv__ui-toolbar {
border: 1px solid #ddd;
}
/* use native scrollbar in tablet device */
.fv__ui-tablet .fv__ui-toolbar {
overflow-y: auto;
}
</style>
<script>
var CustomAppearance = UIExtension.appearances.Appearance.extend({
getLayoutTemplate: function() {
return document.getElementById('layout-template').innerHTML;
},
disableAll: function(){}
});
var libPath = window.top.location.origin + '/lib';
var pdfui = new UIExtension.PDFUI({
viewerOptions: {
libPath: libPath,
jr: {
licenseSN: licenseSN,
licenseKey: licenseKey
}
},
renderTo: document.body,
appearance: CustomAppearance,
addons: []
});
</script>
可使用的设备值包括：
mac,ios,iphone,ipad,ipod,android,webos,kindle,tablet,mobile,desktop,xiaomi,huawei,touch;
默认情况下，连续单击工具栏尾端的paddle button会将工具移动到最开始或最尾端的位置。然而，当工具栏长度是屏幕宽度两倍时，中间工具将不会显示。为了避免此问题，您可以在paddle组件中设置步长。
<html>
<template id="layout-template">
<webpdf>
<toolbar>
<paddle step="200">
<div class="flex-div">
<hand-button></hand-button>
<selection-button></selection-button>
<zoom-dropdown></zoom-dropdown>
<create-note-button></create-note-button>
<create-text-highlight-button></create-text-highlight-button>
<create-strikeout-button></create-strikeout-button>
<create-underline-button></create-underline-button>
<create-squiggly-button></create-squiggly-button>
<create-replace-button></create-replace-button>
<create-caret-button></create-caret-button>
<create-typewriter-button></create-typewriter-button>
<create-callout-button></create-callout-button>
<create-textbox-button></create-textbox-button>
<create-drawings-dropdown></create-drawings-dropdown>
<create-area-highlight-button></create-area-highlight-button>
<create-pencil-button></create-pencil-button>
<eraser-button></eraser-button>
<stamp-dropdown></stamp-dropdown>
<create-measure-dropdown></create-measure-dropdown>
<create-attachment-button></create-attachment-button>
<create-image-button></create-image-button>
<create-link-button></create-link-button>
</div>
</paddle>
</toolbar>
<div class="fv__ui-body">
<viewer></viewer>
</div>
</webpdf>
</template>
</html>
<style>
.flex-div {
display: flex;
}
.fv__ui-toolbar {
border: 1px solid #ddd;
}
</style>
<script>
var CustomAppearance = UIExtension.appearances.Appearance.extend({
getLayoutTemplate: function() {
return document.getElementById('layout-template').innerHTML;
},
disableAll: function(){}
});
var libPath = window.top.location.origin + '/lib';
var pdfui = new UIExtension.PDFUI({
viewerOptions: {
libPath: libPath,
jr: {
licenseSN: licenseSN,
licenseKey: licenseKey
}
},
renderTo: document.body,
appearance: CustomAppearance,
addons: []
});
</script>