/* eslint-disable max-len */
/**
* @file ext-overview_window.js
*
* @license MIT
*
* @copyright 2013 James Sacksteder
*
*/
import { dragmove } from './dragmove/dragmove.js';
export default {
name: 'overview_window',
init ({ _$ }) {
const svgEditor = this;
const { $id } = svgEditor.svgCanvas;
const overviewWindowGlobals = {};
// Define and insert the base html element.
const propsWindowHtml =
'<div id="overview_window_content_pane" style="width:100%; word-wrap:break-word; display:inline-block; margin-top:20px;">' +
'<div id="overview_window_content" style="position:relative; padding-left:15px; top:0px;">' +
'<div style="background-color:#A0A0A0; display:inline-block; overflow:visible;">' +
'<svg id="overviewMiniView" width="132" height="100" x="0" y="0" viewBox="0 0 4800 3600" ' +
'xmlns="http://www.w3.org/2000/svg" ' +
'xmlns:xlink="http://www.w3.org/1999/xlink">' +
'<use x="0" y="0" xlink:href="#svgroot"> </use>' +
'</svg>' +
'<div id="overview_window_view_box" style="min-width:50px; min-height:50px; position:absolute; top:30px; left:30px; z-index:5; background-color:rgba(255,0,102,0.3);">' +
'</div>' +
'</div>' +
'</div>' +
'</div>';
// eslint-disable-next-line no-unsanitized/method
$id("sidepanel_content").insertAdjacentHTML( 'beforeend', propsWindowHtml );
// Define dynamic animation of the view box.
const updateViewBox = () => {
const { workarea } = svgEditor;
const portHeight = parseFloat(getComputedStyle(workarea, null).height.replace("px", ""));
const portWidth = parseFloat(getComputedStyle(workarea, null).width.replace("px", ""));
const portX = workarea.scrollLeft;
const portY = workarea.scrollTop;
const windowWidth = parseFloat(getComputedStyle($id("svgcanvas"), null).width.replace("px", ""));
const windowHeight = parseFloat(getComputedStyle($id("svgcanvas"), null).height.replace("px", ""));
const overviewWidth = parseFloat(getComputedStyle($id("overviewMiniView"), null).width.replace("px", ""));
const overviewHeight = parseFloat(getComputedStyle($id("overviewMiniView"), null).height.replace("px", ""));
const viewBoxX = portX / windowWidth * overviewWidth;
const viewBoxY = portY / windowHeight * overviewHeight;
const viewBoxWidth = portWidth / windowWidth * overviewWidth;
const viewBoxHeight = portHeight / windowHeight * overviewHeight;
$id("overview_window_view_box").style.minWidth = viewBoxWidth + 'px';
$id("overview_window_view_box").style.minHeight = viewBoxHeight + 'px';
$id("overview_window_view_box").style.top = viewBoxY + 'px';
$id("overview_window_view_box").style.left = viewBoxX + 'px';
};
$id('workarea').addEventListener('scroll', () => {
if (!(overviewWindowGlobals.viewBoxDragging)) {
updateViewBox();
}
});
$id('workarea').addEventListener('resize', updateViewBox);
updateViewBox();
// Compensate for changes in zoom and canvas size.
const updateViewDimensions = function () {
const viewWidth = parseFloat(getComputedStyle($id("svgroot"), null).width.replace("px", ""));
const viewHeight = parseFloat(getComputedStyle($id("svgroot"), null).height.replace("px", ""));
const viewX = 640;
const viewY = 480;
const svgWidthOld = parseFloat(getComputedStyle($id("overviewMiniView"), null).width.replace("px", ""));
const svgHeightNew = viewHeight / viewWidth * svgWidthOld;
$id('overviewMiniView').setAttribute('viewBox', viewX + ' ' + viewY + ' ' + viewWidth + ' ' + viewHeight);
$id('overviewMiniView').setAttribute('height', svgHeightNew);
updateViewBox();
};
updateViewDimensions();
// Set up the overview window as a controller for the view port.
overviewWindowGlobals.viewBoxDragging = false;
const updateViewPortFromViewBox = function () {
const windowWidth = parseFloat(getComputedStyle($id("svgcanvas"), null).width.replace("px", ""));
const windowHeight = parseFloat(getComputedStyle($id("svgcanvas"), null).height.replace("px", ""));
const overviewWidth = parseFloat(getComputedStyle($id("overviewMiniView"), null).width.replace("px", ""));
const overviewHeight = parseFloat(getComputedStyle($id("overviewMiniView"), null).height.replace("px", ""));
const viewBoxX = parseFloat(getComputedStyle($id("overview_window_view_box"), null).getPropertyValue('left').replace("px", ""));
const viewBoxY = parseFloat(getComputedStyle($id("overview_window_view_box"), null).getPropertyValue('top').replace("px", ""));
const portX = viewBoxX / overviewWidth * windowWidth;
const portY = viewBoxY / overviewHeight * windowHeight;
$id('workarea').scrollLeft = portX;
$id('workarea').scrollTop = portY;
};
const onStart = () => {
overviewWindowGlobals.viewBoxDragging = true;
updateViewPortFromViewBox();
};
const onEnd = (el, parent, _x, _y) => {
if((el.offsetLeft + el.offsetWidth) > parseFloat(getComputedStyle(parent, null).width.replace("px", ""))){
el.style.left = (parseFloat(getComputedStyle(parent, null).width.replace("px", "")) - el.offsetWidth) + 'px';
} else if(el.offsetLeft < 0){
el.style.left = "0px";
}
if((el.offsetTop + el.offsetHeight) > parseFloat(getComputedStyle(parent, null).height.replace("px", ""))){
el.style.top = (parseFloat(getComputedStyle(parent, null).height.replace("px", "")) - el.offsetHeight) + 'px';
} else if(el.offsetTop < 0){
el.style.top = "0px";
}
overviewWindowGlobals.viewBoxDragging = false;
updateViewPortFromViewBox();
};
const onDrag = function () {
updateViewPortFromViewBox();
};
const dragElem = document.querySelector("#overview_window_view_box");
const parentElem = document.querySelector("#overviewMiniView");
dragmove(dragElem, dragElem, parentElem, onStart, onEnd, onDrag);
$id("overviewMiniView").addEventListener("click", (evt) => {
// Firefox doesn't support evt.offsetX and evt.offsetY.
const mouseX = (evt.offsetX || evt.originalEvent.layerX);
const mouseY = (evt.offsetY || evt.originalEvent.layerY);
const overviewWidth = parseFloat(getComputedStyle($id("overviewMiniView"), null).width.replace("px", ""));
const overviewHeight = parseFloat(getComputedStyle($id("overviewMiniView"), null).height.replace("px", ""));
const viewBoxWidth = parseFloat(getComputedStyle($id("overview_window_view_box"), null).getPropertyValue('min-width').replace("px", ""));
const viewBoxHeight = parseFloat(getComputedStyle($id("overview_window_view_box"), null).getPropertyValue('min-height').replace("px", ""));
let viewBoxX = mouseX - 0.5 * viewBoxWidth;
let viewBoxY = mouseY - 0.5 * viewBoxHeight;
// deal with constraints
if (viewBoxX < 0) {
viewBoxX = 0;
}
if (viewBoxY < 0) {
viewBoxY = 0;
}
if (viewBoxX + viewBoxWidth > overviewWidth) {
viewBoxX = overviewWidth - viewBoxWidth;
}
if (viewBoxY + viewBoxHeight > overviewHeight) {
viewBoxY = overviewHeight - viewBoxHeight;
}
$id("overview_window_view_box").style.top = viewBoxY + 'px';
$id("overview_window_view_box").style.left = viewBoxX + 'px';
updateViewPortFromViewBox();
});
return {
name: 'overview window',
canvasUpdated: updateViewDimensions,
workareaResized: updateViewBox
};
}
};