<marker> - SVG: Scalable Vector Graphics 编辑

The <marker> element defines the graphic that is to be used for drawing arrowheads or polymarkers on a given <path>, <line>, <polyline> or <polygon> element.

Markers are attached to shapes using the marker-start, marker-mid, and marker-end properties.

html,body,svg { height:100% }
<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <!-- arrowhead marker definition -->
    <marker id="arrow" viewBox="0 0 10 10" refX="5" refY="5"
        markerWidth="6" markerHeight="6"
        orient="auto-start-reverse">
      <path d="M 0 0 L 10 5 L 0 10 z" />
    </marker>

    <!-- simple dot marker definition -->
    <marker id="dot" viewBox="0 0 10 10" refX="5" refY="5"
        markerWidth="5" markerHeight="5">
      <circle cx="5" cy="5" r="5" fill="red" />
    </marker>
  </defs>

  <!-- Coordinate axes with a arrowhead in both direction -->
  <polyline points="10,10 10,90 90,90" fill="none" stroke="black"
   marker-start="url(#arrow)" marker-end="url(#arrow)"  />

  <!-- Data line with polymarkers -->
  <polyline points="15,80 29,50 43,60 57,30 71,40 85,15" fill="none" stroke="grey"
   marker-start="url(#dot)" marker-mid="url(#dot)"  marker-end="url(#dot)" />
</svg>

Attributes

markerHeight
This attribute defines the height of the marker viewport.
Value type: <length> ; Default value: 3; Animatable: yes
markerUnits
This attribute defines the coordinate system for the attributes markerWidth, markerHeight and the contents of the <marker>.
Value typeuserSpaceOnUse|strokeWidth ; Default value: strokeWidth; Animatable: yes
markerWidth
This attribute defines the width of the marker viewport.
Value type: <length> ; Default value: 3; Animatable: yes
orient
This attribute defines the orientation of the marker relative to the shape it is attached to.
Value type: auto|auto-start-reverse|<angle> ; Default value: 0; Animatable: yes
preserveAspectRatio
This attribute defines how the svg fragment must be deformed if it is embedded in a container with a different aspect ratio.
Value type: (none| xMinYMin| xMidYMin| xMaxYMin| xMinYMid| xMidYMid| xMaxYMid| xMinYMax| xMidYMax| xMaxYMax) (meet|slice)? ; Default value: xMidYMid meet; Animatable: yes
refX
This attribute defines the x coordinate for the reference point of the marker.
Value type: left|center|right|<coordinate> ; Default value: 0; Animatable: yes
refY
This attribute defines the y coordinate for the reference point of the marker.
Value type: top|center|bottom|<coordinate> ; Default value: 0; Animatable: yes
viewBox
This attribute defines the bound of the SVG viewport for the current SVG fragment.
Value type: <list-of-numbers> ; Default value: none; Animatable: yes

Global attributes

Core Attributes
Most notably: id, tabindex
Styling Attributes
class, style
Conditional Processing Attributes
Most notably: requiredExtensions, systemLanguage
Presentation Attributes
Most notably: clip-path, clip-rule, color, color-interpolation, color-rendering, cursor, display, fill, fill-opacity, fill-rule, filter, mask, opacity, pointer-events, shape-rendering, stroke, stroke-dasharray, stroke-dashoffset, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform, vector-effect, visibility
ARIA Attributes
aria-activedescendant, aria-atomic, aria-autocomplete, aria-busy, aria-checked, aria-colcount, aria-colindex, aria-colspan, aria-controls, aria-current, aria-describedby, aria-details, aria-disabled, aria-dropeffect, aria-errormessage, aria-expanded, aria-flowto, aria-grabbed, aria-haspopup, aria-hidden, aria-invalid, aria-keyshortcuts, aria-label, aria-labelledby, aria-level, aria-live, aria-modal, aria-multiline, aria-multiselectable, aria-orientation, aria-owns, aria-placeholder, aria-posinset, aria-pressed, aria-readonly, aria-relevant, aria-required, aria-roledescription, aria-rowcount, aria-rowindex, aria-rowspan, aria-selected, aria-setsize, aria-sort, aria-valuemax, aria-valuemin, aria-valuenow, aria-valuetext, role

Usage notes

CategoriesContainer element
Permitted contentAny number of the following elements, in any order:
Animation elements
Descriptive elements
Shape elements
Structural elements
Gradient elements
<a>, <altGlyphDef>, <clipPath>, <color-profile>, <cursor>, <filter>, <font>, <font-face>, <foreignObject>, <image>, <marker>, <mask>, <pattern>, <script>, <style>, <switch>, <text>, <view>

Specifications

SpecificationStatusComment
SVG Markers
The definition of '<marker>' in that specification.
Working Draft 
Scalable Vector Graphics (SVG) 2
The definition of '<marker>' in that specification.
Candidate Recommendation 
Scalable Vector Graphics (SVG) 1.1 (Second Edition)
The definition of '<marker>' in that specification.
RecommendationInitial definition

Browser compatibility

BCD tables only load in the browser

See also

如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

扫码二维码加入Web技术交流群

发布评论

需要 登录 才能够评论, 你可以免费 注册 一个本站的账号。
列表为空,暂无数据

词条统计

浏览:115 次

字数:14941

最后编辑:7年前

编辑次数:0 次

    我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站,即表示您同意使用 Cookies 和您的相关数据。
    原文