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<template>
<div class="image-comparator" :style="{ height: imageHeight + 'px' }" ref="comparator">
<div class="images">
<!-- Erstes Bild, linke Seite -->
<img
:src="image1"
class="image"
:style="{ clipPath: 'inset(0 ' + (100 - sliderValue) + '% 0 0)' }"
@load="setImageHeight"
/>
<!-- Zweites Bild, rechte Seite -->
<img :src="image2" class="image" :style="{ clipPath: 'inset(0 0 0 ' + sliderValue + '%)' }" />
</div>
<!-- Slider zur Steuerung des Vergleichs -->
<div class="slider-container" @mousedown="startDragging" @touchstart="startDragging">
<div class="thumb" :class="{ dragging: isDragging}" :style="{ left: `${sliderValue}%`, height: imageHeight + 'px' }">
<StudipIcon class="arrow-left" shape="arr_1left" :size="32" role="info_alt" draggable="false" />
<StudipIcon class="arrow-right" shape="arr_1right" :size="32" role="info_alt" draggable="false" />
</div>
</div>
</div>
</template>
<script>
export default {
name: 'ImageComparator',
data() {
return {
sliderValue: 50, // Anfangswert für den Slider (zeigt 50% von beiden Bildern)
imageHeight: 0, // Höhe der Komponente
isDragging: false, // Dragging-Zustand
};
},
props: {
image1: {
type: String,
required: true,
},
image2: {
type: String,
required: true,
},
},
computed: {},
methods: {
setImageHeight(event) {
const img = event.target;
const ratio = img.naturalHeight / img.naturalWidth;
this.imageHeight = this.$refs.comparator.clientWidth * ratio;
},
startDragging(event) {
this.isDragging = true;
this.updateSliderValue(event);
window.addEventListener('mousemove', this.updateSliderValue);
window.addEventListener('touchmove', this.updateSliderValue);
window.addEventListener('mouseup', this.stopDragging);
window.addEventListener('touchend', this.stopDragging);
},
stopDragging() {
this.isDragging = false;
window.removeEventListener('mousemove', this.updateSliderValue);
window.removeEventListener('touchmove', this.updateSliderValue);
window.removeEventListener('mouseup', this.stopDragging);
window.removeEventListener('touchend', this.stopDragging);
},
updateSliderValue(event) {
if (!this.isDragging) return;
const rect = this.$el.getBoundingClientRect();
const x = event.clientX - rect.left; // Position innerhalb des Containers
const width = rect.width;
const newValue = Math.min(Math.max((x / width) * 100, 0), 100); // Wert zwischen 0 und 100
this.sliderValue = newValue; // Sliderwert aktualisieren
},
},
};
</script>
<style lang="scss">
.image-comparator {
position: relative;
width: 100%;
margin: 0 auto;
overflow: hidden;
img {
-webkit-touch-callout: none; /* iOS Safari */
-webkit-user-select: none; /* Safari */
-khtml-user-select: none; /* Konqueror HTML */
-moz-user-select: none; /* Old versions of Firefox */
-ms-user-select: none; /* Internet Explorer/Edge */
user-select: none; /* Non-prefixed version, currently supported by Chrome, Edge, Opera and Firefox */
}
.images {
position: relative;
display: flex;
width: 100%;
height: 100%;
overflow: hidden;
.image {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: auto;
object-fit: cover;
}
}
}
.slider-container {
position: absolute;
top: 0;
left: 0;
right: 0;
transform: translateY(-50%);
display: flex;
align-items: center;
.thumb {
position: absolute;
top: 0;
width: 4px;
background: rgba(0, 0, 0, 0.2);
cursor: grab;
&.dragging {
cursor: grabbing;
}
.arrow-left,
.arrow-right {
position: absolute;
top: 50%;
background-color: rgba(0, 0, 0, 0.2);
padding: 8px 0px;
}
.arrow-left {
left: -32px;
border-top-left-radius: 8px;
border-bottom-left-radius: 8px;
}
.arrow-right {
right: -32px;
border-top-right-radius: 8px;
border-bottom-right-radius: 8px;
}
}
}
</style>
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