documented/ solved svg rotation bug

This commit is contained in:
Tjark Müller 2023-05-04 13:28:58 +02:00
parent 4da99ef04b
commit 7a5bc222fd

View File

@ -17,19 +17,27 @@
<div class="flipFace back" style="visibility:hidden;"></div>
</div>
<!-- Very tricky problem to scale svgs: see https://css-tricks.com/scale-svg/ -->
<svg class="flipButton backBtn" style="visibility:hidden;" viewBox="0 0 100 100" preserveAspectRatio="xMidYMid meet">
<g stroke-width="8" stroke="white">
<circle cx="50" cy="50" r="44" fill="gray" />
<line x1="30" y1="30" x2="70" y2="70" />
<line x1="30" y1="70" x2="70" y2="30" />
</g>
</svg>
<!-- SVG viewPort interferes with DOMMatrix calculations: see
https://stackoverflow.com/questions/70696387/how-to-get-transform-matrix-of-a-dom-element-->
<div class="flipButton backBtn" style="visibility:hidden;">
<svg viewBox="0 0 100 100" preserveAspectRatio="xMidYMid meet" style="width:inherit; height:inherit;">
<g stroke-width="8" stroke="white">
<circle cx="50" cy="50" r="44" fill="gray" />
<line x1="30" y1="30" x2="70" y2="70" />
<line x1="30" y1="70" x2="70" y2="30" />
</g>
</svg>
</div>
<svg class="flipButton infoBtn" viewBox="0 0 100 100" preserveAspectRatio="xMidYMid meet">
<circle cx="50" cy="50" r="44" stroke="white" stroke-width="8" fill="gray" />
<circle cx="50" cy="32" r="7" fill="white" />
<line x1="50" y1="46" x2="50" y2="78" stroke="white" stroke-width="12" />
</svg>
<div class="flipButton infoBtn">
<svg viewBox="0 0 100 100" preserveAspectRatio="xMidYMid meet" style="width:inherit; height:inherit;">
<circle cx="50" cy="50" r="44" stroke="white" stroke-width="8" fill="gray" />
<circle cx="50" cy="32" r="7" fill="white" />
<line x1="50" y1="46" x2="50" y2="78" stroke="white" stroke-width="12" />
</svg>
</div>
</div>
</template>
@ -46,6 +54,10 @@ via a HTML template that defines the placeholders for front and back views. The
style file "css/flipeffect.css" holds reasonable default styles for this kind of
templates.
</p>
<p>
The SVG buttons have to be wrapped in an HTML DOM element which handles events. Otherwise,
the viewbox of the SVG will interfere with the coordinate transformation.
</p>
<pre><code>
&lt;template id="flipTemplate"&gt;
&lt;div class="flipWrapper"&gt;