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<template>
<div :style="styles" @wheel.stop="onWheelEvt" ref="rootRef">
<tol-tile v-for="(node, idx) in dummyNodes" :key="node.name" class="shrink-0"
:layoutNode="node" :tolMap="tolMap" :nonAbsPos="true" :lytOpts="lytOpts" :uiOpts="uiOpts"
@leaf-click="onTileClick(nodes[idx])" @info-click="onInfoIconClick"/>
</div>
</template>
<script setup lang="ts">
import {ref, computed, watch, onMounted, nextTick, PropType} from 'vue';
import TolTile from './TolTile.vue';
import {TolMap} from '../tol';
import {LayoutNode, LayoutOptions} from '../layout';
import {UiOptions} from '../lib';
// Refs
const rootRef = ref(null as HTMLDivElement | null);
// Props + events
const props = defineProps({
nodes: {type: Array as PropType<LayoutNode[]>, required: true},
vert: {type: Boolean, default: false},
breadth: {type: Number, required: true},
//
lytOpts: {type: Object as PropType<LayoutOptions>, required: true},
uiOpts: {type: Object as PropType<UiOptions>, required: true},
tolMap: {type: Object as PropType<TolMap>, required: true},
});
const emit = defineEmits(['ancestor-click', 'info-click']);
// Computed prop data for display
const imgSz = computed(() =>
props.breadth - props.lytOpts.tileSpacing - props.uiOpts.scrollGap
// Intentionally omitting extra tileSpacing, to allow for scrollGap with less image shrinkage
);
const dummyNodes = computed(() => props.nodes.map(n => {
let newNode = new LayoutNode(n.name, []);
newNode.dims = [imgSz.value, imgSz.value];
return newNode;
}));
// Click handling
function onTileClick(node: LayoutNode){
emit('ancestor-click', node);
}
function onInfoIconClick(data: string){
emit('info-click', data);
}
// Scroll handling
function onWheelEvt(evt: WheelEvent){ // For converting vertical scrolling to horizontal
if (!props.vert && Math.abs(evt.deltaX) < Math.abs(evt.deltaY)){
rootRef.value!.scrollLeft -= (evt.deltaY > 0 ? -30 : 30);
}
}
function scrollToEnd(){
let el = rootRef.value!;
if (props.vert){
el.scrollTop = el.scrollHeight;
} else {
el.scrollLeft = el.scrollWidth;
}
}
watch(props.nodes, () => {
nextTick(() => scrollToEnd());
});
watch(() => props.vert, () => {
nextTick(() => scrollToEnd());
});
onMounted(() => scrollToEnd());
// Styles
const styles = computed(() => ({
// For child layout
display: 'flex',
flexDirection: props.vert ? 'column' : 'row',
alignItems: 'center',
gap: props.lytOpts.tileSpacing + 'px',
padding: props.lytOpts.tileSpacing + 'px',
overflowX: props.vert ? 'hidden' : 'auto',
overflowY: props.vert ? 'auto' : 'hidden',
// Other
backgroundColor: props.uiOpts.ancestryBarBgColor,
boxShadow: props.uiOpts.shadowNormal,
}));
</script>
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