Windows 10 已于2025年10月14日停止支持。如果您正在使用 Windows 10，参见 这篇文章。

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

搜索 | 用户支持

防范以用户支持为名的诈骗。我们绝对不会要求您拨打电话或发送短信，及提供任何个人信息。请使用“举报滥用”选项报告涉及违规的行为。

详细了解
话题已存档。 如果需要帮助请提出新问题。
已存档

Rendering of images with preserveAspectRatio attribute

Firefox 其他
cor-el 已回复
asturur
asturur

It looks like that rendering of svg with images tags and preserveAspectRaio attribute behaves very different if the image is a png or svg.

I created a svg starting from the example here: http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute

i did this SVG: 

<?xml version="1.0" encoding="UTF-8"?>
  <svg width="450px" height="300px" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" >
  <desc>Example PreserveAspectRatio - illustrates preserveAspectRatio attribute</desc>
  <rect x="1" y="1" width="448" height="298"
        fill="none" stroke="blue"/>
  <g font-size="9">
    <text x="10" y="30">SVG to fit</text>
    <g transform="translate(20,40)"><image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" width="30" height="40" ></image></g>
    <text x="10" y="110">Viewport 1</text>
    <g transform="translate(10,120)"><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/></g>
    <text x="10" y="180">Viewport 2</text>
    <g transform="translate(20,190)"><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/></g>

    <g id="meet-group-1" transform="translate(100, 60)">
      <text x="0" y="-30">--------------- meet ---------------</text>
      <g><text y="-10">xMin*</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMinYMin meet" width="50" height="30"></image></g>
      <g transform="translate(70,0)"><text y="-10">xMid*</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMidYMid meet" 
             width="50" height="30"></image></g>
      <g transform="translate(0,70)"><text y="-10">xMax*</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMaxYMax meet" 
             width="50" height="30"></image></g>
    </g>

    <g id="meet-group-2" transform="translate(250, 60)">
      <text x="0" y="-30">---------- meet ----------</text>
      <g><text y="-10">*YMin</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMinYMin meet" 
             width="30" height="60"></image></g>
      <g transform="translate(50, 0)"><text y="-10">*YMid</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMidYMid meet" 
             width="30" height="60"></image></g>
      <g transform="translate(100, 0)"><text y="-10">*YMax</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMaxYMax meet" 
             width="30" height="60"></image></g>
    </g>

    <g id="slice-group-1" transform="translate(100, 220)">
      <text x="0" y="-30">---------- slice ----------</text>
      <g><text y="-10">xMin*</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMinYMin slice" 
             width="30" height="60"></image></g>
      <g transform="translate(50,0)"><text y="-10">xMid*</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMidYMid slice" 
             width="30" height="60"></image></g>
      <g transform="translate(100,0)"><text y="-10">xMax*</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMaxYMax slice" 
             width="30" height="60"></image></g>
    </g>

    <g id="slice-group-2" transform="translate(250, 220)">
      <text x="0" y="-30">--------------- slice ---------------</text>
      <g><text y="-10">*YMin</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMinYMin slice" 
             width="50" height="30"></image></g>
      <g transform="translate(70,0)"><text y="-10">*YMid</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMidYMid slice" 
             width="50" height="30"></image></g>
      <g transform="translate(140,0)"><text y="-10">*YMax</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/>
        <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMaxYMax slice" 
             width="50" height="30"></image></g>
    </g>   
  </g>
</svg>

It renders bad, images are small and do not respect the preserverAspectRatio attribute.

If i swap in the attribute xlink:href the final .svg with a .png ( other version of same image ) everything works as expected , as the reference image in the link i posted. Every browser render same way, inkscape render it better, respecting the attribute.

Someone knows why?

It looks like that rendering of svg with images tags and preserveAspectRaio attribute behaves very different if the image is a png or svg. I created a svg starting from the example here: http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute i did this SVG: ----------------------------------- <pre><nowiki><?xml version="1.0" encoding="UTF-8"?> <svg width="450px" height="300px" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" > <desc>Example PreserveAspectRatio - illustrates preserveAspectRatio attribute</desc> <rect x="1" y="1" width="448" height="298" fill="none" stroke="blue"/> <g font-size="9"> <text x="10" y="30">SVG to fit</text> <g transform="translate(20,40)"><image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" width="30" height="40" ></image></g> <text x="10" y="110">Viewport 1</text> <g transform="translate(10,120)"><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/></g> <text x="10" y="180">Viewport 2</text> <g transform="translate(20,190)"><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/></g> <g id="meet-group-1" transform="translate(100, 60)"> <text x="0" y="-30">--------------- meet ---------------</text> <g><text y="-10">xMin*</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMinYMin meet" width="50" height="30"></image></g> <g transform="translate(70,0)"><text y="-10">xMid*</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMidYMid meet" width="50" height="30"></image></g> <g transform="translate(0,70)"><text y="-10">xMax*</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMaxYMax meet" width="50" height="30"></image></g> </g> <g id="meet-group-2" transform="translate(250, 60)"> <text x="0" y="-30">---------- meet ----------</text> <g><text y="-10">*YMin</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMinYMin meet" width="30" height="60"></image></g> <g transform="translate(50, 0)"><text y="-10">*YMid</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMidYMid meet" width="30" height="60"></image></g> <g transform="translate(100, 0)"><text y="-10">*YMax</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMaxYMax meet" width="30" height="60"></image></g> </g> <g id="slice-group-1" transform="translate(100, 220)"> <text x="0" y="-30">---------- slice ----------</text> <g><text y="-10">xMin*</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMinYMin slice" width="30" height="60"></image></g> <g transform="translate(50,0)"><text y="-10">xMid*</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMidYMid slice" width="30" height="60"></image></g> <g transform="translate(100,0)"><text y="-10">xMax*</text><rect x='.5' y='.5' width='29' height='59' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMaxYMax slice" width="30" height="60"></image></g> </g> <g id="slice-group-2" transform="translate(250, 220)"> <text x="0" y="-30">--------------- slice ---------------</text> <g><text y="-10">*YMin</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMinYMin slice" width="50" height="30"></image></g> <g transform="translate(70,0)"><text y="-10">*YMid</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMidYMid slice" width="50" height="30"></image></g> <g transform="translate(140,0)"><text y="-10">*YMax</text><rect x='.5' y='.5' width='49' height='29' fill='none' stroke='blue'/> <image xlink:href="http://www.deltalink.it/andreab/fabric/assets/smile.svg" preserveAspectRatio="xMaxYMax slice" width="50" height="30"></image></g> </g> </g> </svg></nowiki></pre> ------------------------- It renders bad, images are small and do not respect the preserverAspectRatio attribute. If i swap in the attribute xlink:href the final .svg with a .png ( other version of same image ) everything works as expected , as the reference image in the link i posted. Every browser render same way, inkscape render it better, respecting the attribute. Someone knows why?

由cor-el于修改

所有回复 (1)

cor-el
cor-el
  • 版主

The only difference I see between Firefox and Google Chrome is that the images are centered in their view boxes in GC and left aligned in Firefox.

You may have zoomed the page(s) by accident. Reset the page zoom on pages that cause problems.

  • View > Zoom > Reset (Ctrl/Command+0 (zero))

Can you attach a screenshot?

  • Use a compressed image type like PNG or JPG to save the screenshot
  • Make sure that you do not exceed the maximum size of 1 MB

A good place to ask advice about web development is at the mozillaZine "Web Development/Standards Evangelism" forum.

The helpers at that forum are more knowledgeable about web development issues. You need to register at the mozillaZine forum site in order to post at that forum.