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feat: move absolute/fixed positioned freely on the canvas #140

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feat: move absolute/fixed positioned freely on the canvas #140

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62 changes: 60 additions & 2 deletions frontend/src/components/ComponentEditor.vue
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
:data-component-id="block.componentId"
:class="getStyleClasses"
@click.stop="handleClick"
@mousedown.prevent="handleMove"
>
<!-- Component name label -->
<span
Expand Down Expand Up @@ -94,6 +95,9 @@ import BoxResizer from "@/components/BoxResizer.vue"
import PaddingHandler from "@/components/PaddingHandler.vue"
import MarginHandler from "@/components/MarginHandler.vue"
import Code from "@/components/Code.vue"
import { numberToPx } from "@/utils/helpers";
import setGuides from "../utils/guidesTracker";


import Block from "@/utils/block"
import useStudioStore from "@/stores/studioStore"
Expand Down Expand Up @@ -128,7 +132,8 @@ const resizing = ref(false)
const tracker = ref<Tracker>()

const canvasProps = inject("canvasProps") as CanvasProps

const guides = setGuides(props.target, canvasProps);
const moving = ref(false)
const showMarginPaddingHandlers = computed(() => {
return isBlockSelected.value && !props.block.isRoot() && !resizing.value && !canvasStore.isDragging
})
Expand Down Expand Up @@ -190,6 +195,59 @@ const handleClick = (ev: MouseEvent) => {
}
}


const handleMove = (ev: MouseEvent) => {
if (props.block.isRoot()) return;
const pauseId = canvasStore.activeCanvas?.history?.pause();
const target = ev.target as HTMLElement;
const startX = ev.clientX;
const startY = ev.clientY;
const startLeft = (props.target as HTMLElement).offsetLeft || 0;
const startTop = (props.target as HTMLElement).offsetTop || 0;

moving.value = true;
guides.showX();

// to disable cursor jitter
const docCursor = document.body.style.cursor;
document.body.style.cursor = "grabbing";
target.style.cursor = "grabbing";

const mousemove = async (mouseMoveEvent: MouseEvent) => {
const scale = canvasProps.scale;
const movementX = (mouseMoveEvent.clientX - startX) / scale;
const movementY = (mouseMoveEvent.clientY - startY) / scale;
let finalLeft = startLeft + movementX;
let finalTop = startTop + movementY;
props.block.setStyle("left", numberToPx(finalLeft));
props.block.setStyle("top", numberToPx(finalTop));
const { leftOffset, rightOffset } = guides.getPositionOffset();
if (leftOffset !== 0) {
props.block.setStyle("left", numberToPx(finalLeft + leftOffset));
}
if (rightOffset !== 0) {
props.block.setStyle("left", numberToPx(finalLeft + rightOffset));
}

mouseMoveEvent.preventDefault();
preventClick.value = true;
};
document.addEventListener("mousemove", mousemove);
document.addEventListener(
"mouseup",
(mouseUpEvent) => {
moving.value = false;
document.body.style.cursor = docCursor;
target.style.cursor = "grab";
document.removeEventListener("mousemove", mousemove);
mouseUpEvent.preventDefault();
guides.hideX();
canvasStore.activeCanvas?.history?.resume(pauseId, true);
},
{ once: true },
);
};

watchEffect(() => {
props.block.getStyle("top")
props.block.getStyle("left")
Expand Down Expand Up @@ -316,4 +374,4 @@ onMounted(() => {
defineExpose({
element: editor,
})
</script>
</script>