175 lines
8.0 KiB
JavaScript
175 lines
8.0 KiB
JavaScript
/* eslint-disable max-len */
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/**
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* @file ext-overview_window.js
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*
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* @license MIT
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*
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* @copyright 2013 James Sacksteder
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*
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*/
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import { dragmove } from './dragmove/dragmove.js';
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export default {
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name: 'overview_window',
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init ({ _$, isChrome }) {
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const svgEditor = this;
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const { $id } = svgEditor.svgCanvas;
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const overviewWindowGlobals = {};
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// Disabled in Chrome 48-, see https://github.com/SVG-Edit/svgedit/issues/26 and
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// https://code.google.com/p/chromium/issues/detail?id=565120.
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if (isChrome()) {
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const verIndex = navigator.userAgent.indexOf('Chrome/') + 7;
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const chromeVersion = Number.parseInt(navigator.userAgent.substring(verIndex));
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if (chromeVersion < 49) {
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return undefined;
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}
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}
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// Define and insert the base html element.
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const propsWindowHtml =
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'<div id="overview_window_content_pane" style="width:100%; ' +
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'word-wrap:break-word; display:inline-block; margin-top:20px;">' +
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'<div id="overview_window_content" style="position:relative; ' +
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'left:12px; top:0px;">' +
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'<div style="background-color:#A0A0A0; display:inline-block; ' +
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'overflow:visible;">' +
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'<svg id="overviewMiniView" width="150" height="100" x="0" ' +
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'y="0" viewBox="0 0 4800 3600" ' +
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'xmlns="http://www.w3.org/2000/svg" ' +
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'xmlns:xlink="http://www.w3.org/1999/xlink">' +
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'<use x="0" y="0" xlink:href="#svgroot"> </use>' +
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'</svg>' +
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'<div id="overview_window_view_box" style="min-width:50px; ' +
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'min-height:50px; position:absolute; top:30px; left:30px; ' +
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'z-index:5; background-color:rgba(255,0,102,0.3);">' +
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'</div>' +
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'</div>' +
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'</div>' +
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'</div>';
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// eslint-disable-next-line no-unsanitized/method
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$id("sidepanels").insertAdjacentHTML( 'beforeend', propsWindowHtml );
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// Define dynamic animation of the view box.
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const updateViewBox = function () {
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const warea = document.getElementById('workarea');
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const portHeight = parseFloat(getComputedStyle(warea, null).height.replace("px", ""));
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const portWidth = parseFloat(getComputedStyle(warea, null).width.replace("px", ""));
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const portX = warea.scrollLeft;
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const portY = warea.scrollTop;
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const windowWidth = parseFloat(getComputedStyle($id("svgcanvas"), null).width.replace("px", ""));
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const windowHeight = parseFloat(getComputedStyle($id("svgcanvas"), null).height.replace("px", ""));
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const overviewWidth = parseFloat(getComputedStyle($id("overviewMiniView"), null).width.replace("px", ""));
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const overviewHeight = parseFloat(getComputedStyle($id("overviewMiniView"), null).height.replace("px", ""));
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const viewBoxX = portX / windowWidth * overviewWidth;
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const viewBoxY = portY / windowHeight * overviewHeight;
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const viewBoxWidth = portWidth / windowWidth * overviewWidth;
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const viewBoxHeight = portHeight / windowHeight * overviewHeight;
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$id("overview_window_view_box").style.minWidth = viewBoxWidth + 'px';
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$id("overview_window_view_box").style.minHeight = viewBoxHeight + 'px';
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$id("overview_window_view_box").style.top = viewBoxY + 'px';
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$id("overview_window_view_box").style.left = viewBoxX + 'px';
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};
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document.getElementById('workarea').addEventListener('scroll', () => {
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if (!(overviewWindowGlobals.viewBoxDragging)) {
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updateViewBox();
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}
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});
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document.getElementById('workarea').addEventListener('resize', updateViewBox);
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updateViewBox();
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// Compensate for changes in zoom and canvas size.
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const updateViewDimensions = function () {
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const viewWidth = parseFloat(getComputedStyle($id("svgroot"), null).width.replace("px", ""));
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const viewHeight = parseFloat(getComputedStyle($id("svgroot"), null).height.replace("px", ""));
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const viewX = 640;
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const viewY = 480;
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const svgWidthOld = parseFloat(getComputedStyle($id("overviewMiniView"), null).width.replace("px", ""));
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const svgHeightNew = viewHeight / viewWidth * svgWidthOld;
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$id('overviewMiniView').setAttribute('viewBox', viewX + ' ' + viewY + ' ' + viewWidth + ' ' + viewHeight);
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$id('overviewMiniView').setAttribute('height', svgHeightNew);
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updateViewBox();
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};
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updateViewDimensions();
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// Set up the overview window as a controller for the view port.
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overviewWindowGlobals.viewBoxDragging = false;
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const updateViewPortFromViewBox = function () {
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const windowWidth = parseFloat(getComputedStyle($id("svgcanvas"), null).width.replace("px", ""));
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const windowHeight = parseFloat(getComputedStyle($id("svgcanvas"), null).height.replace("px", ""));
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const overviewWidth = parseFloat(getComputedStyle($id("overviewMiniView"), null).width.replace("px", ""));
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const overviewHeight = parseFloat(getComputedStyle($id("overviewMiniView"), null).height.replace("px", ""));
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const viewBoxX = parseFloat(getComputedStyle($id("overview_window_view_box"), null).getPropertyValue('left').replace("px", ""));
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const viewBoxY = parseFloat(getComputedStyle($id("overview_window_view_box"), null).getPropertyValue('top').replace("px", ""));
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const portX = viewBoxX / overviewWidth * windowWidth;
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const portY = viewBoxY / overviewHeight * windowHeight;
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$id('workarea').scrollLeft = portX;
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$id('workarea').scrollTop = portY;
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};
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const onStart = () => {
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overviewWindowGlobals.viewBoxDragging = true;
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updateViewPortFromViewBox();
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};
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const onEnd = (el, parent, _x, _y) => {
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if((el.offsetLeft + el.offsetWidth) > parseFloat(getComputedStyle(parent, null).width.replace("px", ""))){
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el.style.left = (parseFloat(getComputedStyle(parent, null).width.replace("px", "")) - el.offsetWidth) + 'px';
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} else if(el.offsetLeft < 0){
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el.style.left = "0px";
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}
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if((el.offsetTop + el.offsetHeight) > parseFloat(getComputedStyle(parent, null).height.replace("px", ""))){
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el.style.top = (parseFloat(getComputedStyle(parent, null).height.replace("px", "")) - el.offsetHeight) + 'px';
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} else if(el.offsetTop < 0){
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el.style.top = "0px";
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}
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overviewWindowGlobals.viewBoxDragging = false;
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updateViewPortFromViewBox();
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};
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const onDrag = function () {
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updateViewPortFromViewBox();
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};
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const dragElem = document.querySelector("#overview_window_view_box");
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const parentElem = document.querySelector("#overviewMiniView");
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dragmove(dragElem, dragElem, parentElem, onStart, onEnd, onDrag);
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$id("overviewMiniView").addEventListener("click", (evt) => {
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// Firefox doesn't support evt.offsetX and evt.offsetY.
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const mouseX = (evt.offsetX || evt.originalEvent.layerX);
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const mouseY = (evt.offsetY || evt.originalEvent.layerY);
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const overviewWidth = parseFloat(getComputedStyle($id("overviewMiniView"), null).width.replace("px", ""));
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const overviewHeight = parseFloat(getComputedStyle($id("overviewMiniView"), null).height.replace("px", ""));
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const viewBoxWidth = parseFloat(getComputedStyle($id("overview_window_view_box"), null).getPropertyValue('min-width').replace("px", ""));
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const viewBoxHeight = parseFloat(getComputedStyle($id("overview_window_view_box"), null).getPropertyValue('min-height').replace("px", ""));
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let viewBoxX = mouseX - 0.5 * viewBoxWidth;
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let viewBoxY = mouseY - 0.5 * viewBoxHeight;
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// deal with constraints
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if (viewBoxX < 0) {
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viewBoxX = 0;
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}
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if (viewBoxY < 0) {
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viewBoxY = 0;
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}
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if (viewBoxX + viewBoxWidth > overviewWidth) {
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viewBoxX = overviewWidth - viewBoxWidth;
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}
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if (viewBoxY + viewBoxHeight > overviewHeight) {
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viewBoxY = overviewHeight - viewBoxHeight;
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}
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$id("overview_window_view_box").style.top = viewBoxY + 'px';
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$id("overview_window_view_box").style.left = viewBoxX + 'px';
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updateViewPortFromViewBox();
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});
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return {
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name: 'overview window',
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canvasUpdated: updateViewDimensions,
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workareaResized: updateViewBox
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};
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}
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};
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