mirror of
https://github.com/dgtlmoon/changedetection.io.git
synced 2025-11-04 08:34:57 +00:00
244 lines
8.9 KiB
JavaScript
244 lines
8.9 KiB
JavaScript
// Copyright (C) 2021 Leigh Morresi (dgtlmoon@gmail.com)
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// All rights reserved.
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// yes - this is really a hack, if you are a front-ender and want to help, please get in touch!
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$(document).ready(function () {
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var current_selected_i;
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var state_clicked = false;
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var c;
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// greyed out fill context
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var xctx;
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// redline highlight context
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var ctx;
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var current_default_xpath = [];
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var x_scale = 1;
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var y_scale = 1;
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var selector_image;
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var selector_image_rect;
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var selector_data;
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$('#visualselector-tab').click(function () {
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$("img#selector-background").off('load');
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state_clicked = false;
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current_selected_i = false;
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bootstrap_visualselector();
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});
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$(document).on('keydown', function (event) {
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if ($("img#selector-background").is(":visible")) {
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if (event.key == "Escape") {
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state_clicked = false;
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ctx.clearRect(0, 0, c.width, c.height);
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}
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}
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});
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// For when the page loads
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if (!window.location.hash || window.location.hash != '#visualselector') {
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$("img#selector-background").attr('src', '');
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return;
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}
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// Handle clearing button/link
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$('#clear-selector').on('click', function (event) {
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if (!state_clicked) {
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alert('Oops, Nothing selected!');
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}
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state_clicked = false;
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ctx.clearRect(0, 0, c.width, c.height);
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xctx.clearRect(0, 0, c.width, c.height);
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$("#include_filters").val('');
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});
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bootstrap_visualselector();
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function bootstrap_visualselector() {
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if (1) {
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// bootstrap it, this will trigger everything else
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$("img#selector-background").bind('load', function () {
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console.log("Loaded background...");
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c = document.getElementById("selector-canvas");
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// greyed out fill context
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xctx = c.getContext("2d");
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// redline highlight context
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ctx = c.getContext("2d");
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if ($("#include_filters").val().trim().length) {
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current_default_xpath = $("#include_filters").val().split(/\r?\n/g);
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} else {
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current_default_xpath = [];
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}
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fetch_data();
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$('#selector-canvas').off("mousemove mousedown");
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// screenshot_url defined in the edit.html template
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}).attr("src", screenshot_url);
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}
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// Tell visualSelector that the image should update
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var s = $("img#selector-background").attr('src')+"?"+ new Date().getTime();
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$("img#selector-background").attr('src',s)
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}
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function fetch_data() {
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// Image is ready
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$('.fetching-update-notice').html("Fetching element data..");
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$.ajax({
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url: watch_visual_selector_data_url,
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context: document.body
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}).done(function (data) {
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$('.fetching-update-notice').html("Rendering..");
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selector_data = data;
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console.log("Reported browser width from backend: " + data['browser_width']);
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state_clicked = false;
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set_scale();
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reflow_selector();
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$('.fetching-update-notice').fadeOut();
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});
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};
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function set_scale() {
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// some things to check if the scaling doesnt work
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// - that the widths/sizes really are about the actual screen size cat elements.json |grep -o width......|sort|uniq
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$("#selector-wrapper").show();
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selector_image = $("img#selector-background")[0];
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selector_image_rect = selector_image.getBoundingClientRect();
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// make the canvas the same size as the image
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$('#selector-canvas').attr('height', selector_image_rect.height);
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$('#selector-canvas').attr('width', selector_image_rect.width);
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$('#selector-wrapper').attr('width', selector_image_rect.width);
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x_scale = selector_image_rect.width / selector_data['browser_width'];
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y_scale = selector_image_rect.height / selector_image.naturalHeight;
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ctx.strokeStyle = 'rgba(255,0,0, 0.9)';
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ctx.fillStyle = 'rgba(255,0,0, 0.1)';
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ctx.lineWidth = 3;
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console.log("scaling set x: " + x_scale + " by y:" + y_scale);
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$("#selector-current-xpath").css('max-width', selector_image_rect.width);
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}
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function reflow_selector() {
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$(window).resize(function () {
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set_scale();
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highlight_current_selected_i();
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});
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var selector_currnt_xpath_text = $("#selector-current-xpath span");
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set_scale();
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console.log(selector_data['size_pos'].length + " selectors found");
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// highlight the default one if we can find it in the xPath list
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// or the xpath matches the default one
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found = false;
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if (current_default_xpath.length) {
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// Find the first one that matches
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// @todo In the future paint all that match
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for (const c of current_default_xpath) {
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for (var i = selector_data['size_pos'].length; i !== 0; i--) {
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if (selector_data['size_pos'][i - 1].xpath === c) {
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console.log("highlighting " + c);
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current_selected_i = i - 1;
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highlight_current_selected_i();
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found = true;
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break;
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}
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}
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if (found) {
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break;
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}
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}
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if (!found) {
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alert("Unfortunately your existing CSS/xPath Filter was no longer found!");
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}
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}
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$('#selector-canvas').bind('mousemove', function (e) {
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if (state_clicked) {
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return;
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}
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ctx.clearRect(0, 0, c.width, c.height);
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current_selected_i = null;
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// Add in offset
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if ((typeof e.offsetX === "undefined" || typeof e.offsetY === "undefined") || (e.offsetX === 0 && e.offsetY === 0)) {
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var targetOffset = $(e.target).offset();
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e.offsetX = e.pageX - targetOffset.left;
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e.offsetY = e.pageY - targetOffset.top;
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}
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// Reverse order - the most specific one should be deeper/"laster"
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// Basically, find the most 'deepest'
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var found = 0;
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ctx.fillStyle = 'rgba(205,0,0,0.35)';
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// Will be sorted by smallest width*height first
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for (var i = 0; i <= selector_data['size_pos'].length; i++) {
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// draw all of them? let them choose somehow?
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var sel = selector_data['size_pos'][i];
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// If we are in a bounding-box
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if (e.offsetY > sel.top * y_scale && e.offsetY < sel.top * y_scale + sel.height * y_scale
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&&
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e.offsetX > sel.left * y_scale && e.offsetX < sel.left * y_scale + sel.width * y_scale
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) {
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// FOUND ONE
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set_current_selected_text(sel.xpath);
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ctx.strokeRect(sel.left * x_scale, sel.top * y_scale, sel.width * x_scale, sel.height * y_scale);
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ctx.fillRect(sel.left * x_scale, sel.top * y_scale, sel.width * x_scale, sel.height * y_scale);
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// no need to keep digging
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// @todo or, O to go out/up, I to go in
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// or double click to go up/out the selector?
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current_selected_i = i;
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found += 1;
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break;
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}
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}
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}.debounce(5));
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function set_current_selected_text(s) {
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selector_currnt_xpath_text[0].innerHTML = s;
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}
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function highlight_current_selected_i() {
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if (state_clicked) {
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state_clicked = false;
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xctx.clearRect(0, 0, c.width, c.height);
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return;
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}
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var sel = selector_data['size_pos'][current_selected_i];
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if (sel[0] == '/') {
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// @todo - not sure just checking / is right
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$("#include_filters").val('xpath:' + sel.xpath);
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} else {
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$("#include_filters").val(sel.xpath);
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}
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xctx.fillStyle = 'rgba(205,205,205,0.95)';
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xctx.strokeStyle = 'rgba(225,0,0,0.9)';
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xctx.lineWidth = 3;
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xctx.fillRect(0, 0, c.width, c.height);
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// Clear out what only should be seen (make a clear/clean spot)
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xctx.clearRect(sel.left * x_scale, sel.top * y_scale, sel.width * x_scale, sel.height * y_scale);
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xctx.strokeRect(sel.left * x_scale, sel.top * y_scale, sel.width * x_scale, sel.height * y_scale);
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state_clicked = true;
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set_current_selected_text(sel.xpath);
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}
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$('#selector-canvas').bind('mousedown', function (e) {
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highlight_current_selected_i();
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});
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}
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}); |