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If the image is small don't scale

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Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>
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Šimon Brandner 2021-04-26 13:47:06 +02:00
parent 33107a1f47
commit b741b3112a
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1 changed files with 12 additions and 7 deletions
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19
src/components/views/elements/ImageView.tsx
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@ -123,21 +123,26 @@ export default class ImageView extends React.Component<IProps, IState> {
const zoomX = imageWrapper.clientWidth / width;
const zoomY = imageWrapper.clientHeight / height;
// If the image is smaller in both dimensions set its the zoom to 1 to
// display it in its original size
if (zoomX >= 1 && zoomY >= 1) {
this.setState({
zoom: 1,
minZoom: 1,
maxZoom: 1,
});
return;
}
// We set minZoom to the min of the zoomX and zoomY to avoid overflow in
// any direction. We also multiply by MAX_SCALE to get a gap around the
// image by default
const minZoom = Math.min(zoomX, zoomY) * MAX_SCALE;
// If minZoom is bigger or equal to 1, it means we scaling the image up
// to fit the viewport and therefore we want to disable zooming, so we
// set the maxZoom to be the same as the minZoom. Otherwise, we are
// scaling the image down - we want the user to be allowed to zoom to
// 100%
const maxZoom = minZoom >= 1 ? minZoom : 1;
if (this.state.zoom <= this.state.minZoom) this.setState({zoom: minZoom});
this.setState({
minZoom: minZoom,
maxZoom: maxZoom,
maxZoom: 1,
});
}