/* globals jQuery */
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/**
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* 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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export default {
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name: 'overview_window',
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init ({isChrome, isIE}) {
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const $ = jQuery;
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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 = parseInt(navigator.userAgent.substring(verIndex), 10);
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if (chromeVersion < 49) {
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return;
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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%; word-wrap:break-word; display:inline-block; margin-top:20px;">' +
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'<div id="overview_window_content" style="position:relative; left:12px; top:0px;">' +
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'<div style="background-color:#A0A0A0; display:inline-block; overflow:visible;">' +
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'<svg id="overviewMiniView" width="150" 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">' +
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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; min-height:50px; position:absolute; top:30px; left:30px; 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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$('#sidepanels').append(propsWindowHtml);
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// Define dynamic animation of the view box.
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const updateViewBox = function () {
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const portHeight = parseFloat($('#workarea').css('height'));
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const portWidth = parseFloat($('#workarea').css('width'));
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const portX = $('#workarea').scrollLeft();
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const portY = $('#workarea').scrollTop();
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const windowWidth = parseFloat($('#svgcanvas').css('width'));
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const windowHeight = parseFloat($('#svgcanvas').css('height'));
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const overviewWidth = $('#overviewMiniView').attr('width');
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const overviewHeight = $('#overviewMiniView').attr('height');
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const viewBoxX = portX / windowWidth * overviewWidth;
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const viewBoxY = portY / windowHeight * overviewHeight;
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const viewBoxWidth = portWidth / windowWidth * overviewWidth;
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const viewBoxHeight = portHeight / windowHeight * overviewHeight;
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$('#overview_window_view_box').css('min-width', viewBoxWidth + 'px');
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$('#overview_window_view_box').css('min-height', viewBoxHeight + 'px');
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$('#overview_window_view_box').css('top', viewBoxY + 'px');
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$('#overview_window_view_box').css('left', viewBoxX + 'px');
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};
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$('#workarea').scroll(function () {
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if (!(overviewWindowGlobals.viewBoxDragging)) {
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updateViewBox();
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}
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});
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$('#workarea').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 = $('#svgroot').attr('width');
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const viewHeight = $('#svgroot').attr('height');
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let viewX = 640;
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let viewY = 480;
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if (isIE()) {
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// This has only been tested with Firefox 10 and IE 9 (without chrome frame).
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// I am not sure if if is Firefox or IE that is being non compliant here.
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// Either way the one that is noncompliant may become more compliant later.
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// TAG:HACK
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// TAG:VERSION_DEPENDENT
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// TAG:BROWSER_SNIFFING
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viewX = 0;
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viewY = 0;
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}
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const svgWidthOld = $('#overviewMiniView').attr('width');
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const svgHeightNew = viewHeight / viewWidth * svgWidthOld;
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$('#overviewMiniView').attr('viewBox', viewX + ' ' + viewY + ' ' + viewWidth + ' ' + viewHeight);
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$('#overviewMiniView').attr('height', svgHeightNew);
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updateViewBox();
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};
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updateViewDimensions();
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// Set up the overview window as a controller for the view port.
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overviewWindowGlobals.viewBoxDragging = false;
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const updateViewPortFromViewBox = function () {
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const windowWidth = parseFloat($('#svgcanvas').css('width'));
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const windowHeight = parseFloat($('#svgcanvas').css('height'));
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const overviewWidth = $('#overviewMiniView').attr('width');
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const overviewHeight = $('#overviewMiniView').attr('height');
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const viewBoxX = parseFloat($('#overview_window_view_box').css('left'));
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const viewBoxY = parseFloat($('#overview_window_view_box').css('top'));
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const portX = viewBoxX / overviewWidth * windowWidth;
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const portY = viewBoxY / overviewHeight * windowHeight;
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$('#workarea').scrollLeft(portX);
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$('#workarea').scrollTop(portY);
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};
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$('#overview_window_view_box').draggable({
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containment: 'parent',
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drag: updateViewPortFromViewBox,
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start () { overviewWindowGlobals.viewBoxDragging = true; },
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stop () { overviewWindowGlobals.viewBoxDragging = false; }
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});
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$('#overviewMiniView').click(function (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 = $('#overviewMiniView').attr('width');
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const overviewHeight = $('#overviewMiniView').attr('height');
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const viewBoxWidth = parseFloat($('#overview_window_view_box').css('min-width'));
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const viewBoxHeight = parseFloat($('#overview_window_view_box').css('min-height'));
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let viewBoxX = mouseX - 0.5 * viewBoxWidth;
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let viewBoxY = mouseY - 0.5 * viewBoxHeight;
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// deal with constraints
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if (viewBoxX < 0) {
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viewBoxX = 0;
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}
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if (viewBoxY < 0) {
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viewBoxY = 0;
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}
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if (viewBoxX + viewBoxWidth > overviewWidth) {
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viewBoxX = overviewWidth - viewBoxWidth;
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}
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if (viewBoxY + viewBoxHeight > overviewHeight) {
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viewBoxY = overviewHeight - viewBoxHeight;
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}
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$('#overview_window_view_box').css('top', viewBoxY + 'px');
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$('#overview_window_view_box').css('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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