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controls.js
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controls.js
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let map_data;
let svg_element = document.documentElement;
let current_sea = svg_element.dataset.currentSea;
let lon_0 = "0";
if (svg_element.dataset.lon_0 !== undefined) {
lon_0 = svg_element.dataset.lon_0;
}
let not_zoomed = false;
if (svg_element.dataset.notZoomed !== undefined) {
not_zoomed = true;
} // else {
// const not_zoomed = false;
// }
const svg_width = 500;
// window.alert("hi");
// https://stackoverflow.com/questions/12460378/how-to-get-json-from-url-in-javascript
// https://stackoverflow.com/questions/24468459/sending-a-json-to-server-and-retrieving-a-json-in-return-without-jquery
async function send_json() {
// send json
let xhr = new XMLHttpRequest();
let url = "http://localhost:8123/b4801f52-7f87-454a-9fd7-c6367b976fff/set_json";
xhr.open("POST", url, true);
xhr.send(JSON.stringify(map_data));
}
// get json
function get_json() {
let data;
let xhr = new XMLHttpRequest();
let url = "http://localhost:8123/b4801f52-7f87-454a-9fd7-c6367b976fff/get_json";
xhr.open("GET", url, true);
xhr.onload = function () {
if (xhr.readyState === 4 && xhr.status === 200) {
map_data = JSON.parse(xhr.responseText);
ensure_data_for_current_sea_is_defined(not_zoomed);
refresh_svg(map_data);
};
};
xhr.send();
}
get_json();
function ensure_data_for_current_sea_is_defined(not_zoomed) {
let objects;
if (not_zoomed) {
objects = [["highlighted_ids", []], ["zoomed", false]];
} else {
objects = [["x_offset", 500], ["y_offset", 500], ["width", 1000], ["highlighted_ids", []]];
}
if (current_sea in map_data) {
for (let i=0; i < objects.length; i++) {
let o_k = objects[i][0];
let o_v = objects[i][1];
if (! (o_k in map_data[current_sea])) {
map_data[current_sea][o_k] = o_v;
}
}
} else {
map_data[current_sea] = {};
for (let i=0; i < objects.length; i++) {
let o_k = objects[i][0];
let o_v = objects[i][1];
map_data[current_sea][o_k] = o_v;
}
// override whatever was in the old map_data!
map_data[current_sea]["lon_0"] = lon_0;
}
}
function refresh_svg(map_data) {
// assume that ensure_data_for_current_sea_is_defined has been run
let d = map_data[current_sea];
let x_offset = d.x_offset;
let y_offset = d.y_offset;
let width = d.width;
let highlighted_ids = d.highlighted_ids;
let scale = svg_width/width;
let main_map = document.getElementById("Main_map");
if (main_map !== null) {
main_map.setAttribute("transform", `scale(${scale}) translate(${-x_offset} ${-y_offset})`);
}
let currently_highlighted_elements = document.getElementsByClassName("selected");
while (currently_highlighted_elements.length > 0) {
currently_highlighted_elements[0].setAttribute("fill", "#B3DFF5");
currently_highlighted_elements[0].setAttribute("stroke", "#B3DFF5");
currently_highlighted_elements[0].setAttribute("class", "");
}
for (let i=0; i < highlighted_ids.length; i++) {
if (document.getElementById(highlighted_ids[i]) === null) {
console.log(highlighted_ids[i]);
} else {
document.getElementById(highlighted_ids[i]).setAttribute("fill", "#4790c8");
document.getElementById(highlighted_ids[i]).setAttribute("stroke", "#4790c8");
document.getElementById(highlighted_ids[i]).setAttribute("class", "selected");
}
}
let mini_map_marker_g = document.getElementById("Marker");
if (mini_map_marker_g !== null) {
let mini_map_markers = mini_map_marker_g.children;
let height = 9/16 * width;
for (let i=0; i < mini_map_markers.length; i++) {
m = mini_map_markers[i];
// width of mini_map globe is 1/32 that of the main globe
m.setAttribute("x", x_offset/32);
m.setAttribute("y", y_offset/32);
m.setAttribute("width", width/32);
m.setAttribute("height", height/32);
}
}
document.title = current_sea;
}
function onkeydown(event) {
if (event.ctrlKey) {
return 0;
}
let delta, multiplier;
if (event.shiftKey) {
delta = 1;
multiplier = 1.01;
} else {
delta = 10;
multiplier = 1.05;
}
switch (event.code) {
case "KeyJ":
map_data[current_sea].y_offset += delta;
break;
case "KeyK":
map_data[current_sea].y_offset -= delta;
break;
case "KeyL":
map_data[current_sea].x_offset += delta;
break;
case "KeyH":
map_data[current_sea].x_offset -= delta;
break;
case "Equal":
map_data[current_sea].width *= 1/multiplier;
break;
case "Minus":
map_data[current_sea].width *= multiplier;
break;
case "KeyS":
send_json();
break;
case "KeyA":
// "add"
select_id_to_add();
break;
case "KeyR":
// "remove"
select_id_to_remove();
break;
case "KeyG":
// like "C-g"
stop_mouse_listeners();
break;
case "KeyO":
// ~ "open"
change_current_sea_dialog();
event.preventDefault();
break;
case "KeyC":
// "comment"
comment_dialog();
event.preventDefault();
break;
// default:
// console.log("no!");
// break;
}
refresh_svg(map_data);
}
document.addEventListener("keydown", onkeydown);
function select_id_to_add() {
document.getElementById("Seas").addEventListener("click", highlight_id);
}
function select_id_to_remove() {
document.getElementById("Seas").addEventListener("click", unhighlight_id);
}
function highlight_id(e) {
document.getElementById("Seas").removeEventListener("click", highlight_id);
let elem = e.target;
id = elem.getAttribute("id");
if (id) {
if (!map_data[current_sea].highlighted_ids.includes(id)) {
map_data[current_sea].highlighted_ids.push(id);
refresh_svg(map_data);
window.alert(id);
}
}
}
function unhighlight_id(e) {
document.getElementById("Seas").removeEventListener("click", unhighlight_id);
let elem = e.target;
id = elem.getAttribute("id");
if (id) {
if (map_data[current_sea].highlighted_ids.includes(id)) {
map_data[current_sea].highlighted_ids = map_data[current_sea].highlighted_ids.filter(i => i !== id);
refresh_svg(map_data);
window.alert(id);
}
}
}
function stop_mouse_listeners() {
document.getElementById("Seas").removeEventListener("click", highlight_id);
document.getElementById("Seas").removeEventListener("click", unhighlight_id);
}
function clone_current_sea(old_current_sea, new_current_sea) {
if (new_current_sea in map_data) {
window.alert("Current sea already exists! Switching but not copying.");
} else {
map_data[new_current_sea] = {};
map_data[new_current_sea].x_offset = map_data[old_current_sea].x_offset;
map_data[new_current_sea].y_offset = map_data[old_current_sea].y_offset;
map_data[new_current_sea].width = map_data[old_current_sea].width;
map_data[new_current_sea].lon_0 = map_data[old_current_sea].lon_0;
map_data[new_current_sea].highlighted_ids = [];
// don't copy highlight_ids as that will be changed anyway
}
}
function change_current_sea() {
let old_current_sea = current_sea;
let f = document.getElementById("change_current_sea_dialog_holder");
let textarea = document.getElementById("change_current_sea_dialog");
let new_current_sea = textarea.value;
clone_current_sea(old_current_sea, new_current_sea);
current_sea = new_current_sea;
refresh_svg(map_data);
textarea.remove();
f.remove();
document.removeEventListener("keydown", change_current_sea_keydown);
document.addEventListener("keydown", onkeydown);
}
function change_current_sea_keydown(e) {
if (e.ctrlKey && (e.code === "Enter")) {
change_current_sea();
}
}
function change_current_sea_dialog() {
let f = document.createElementNS("http://www.w3.org/2000/svg", "foreignObject");
let textarea = document.createElementNS("http://www.w3.org/1999/xhtml", "textarea");
f.setAttribute("id", "change_current_sea_dialog_holder");
f.setAttribute("x", 20);
f.setAttribute("y", 90);
f.setAttribute("width", 400);
f.setAttribute("height", 200);
textarea.setAttribute("id", "change_current_sea_dialog");
textarea.value = "";
document.rootElement.append(f);
f.append(textarea);
document.removeEventListener("keydown", onkeydown);
document.addEventListener("keydown", change_current_sea_keydown);
textarea.focus()
}
function add_comment() {
let f = document.getElementById("comment_dialog_holder");
let textarea = document.getElementById("comment_dialog");
let comment = textarea.value;
if (comment !== "") {
map_data[current_sea].comment = comment;
}
textarea.remove();
f.remove();
document.removeEventListener("keydown", comment_keydown);
document.addEventListener("keydown", onkeydown);
}
function comment_keydown(e) {
if (e.ctrlKey && (e.code === "Enter")) {
add_comment();
}
}
function comment_dialog() {
let f = document.createElementNS("http://www.w3.org/2000/svg", "foreignObject");
let textarea = document.createElementNS("http://www.w3.org/1999/xhtml", "textarea");
f.setAttribute("id", "comment_dialog_holder");
f.setAttribute("x", 20);
f.setAttribute("y", 90);
f.setAttribute("width", 400);
f.setAttribute("height", 200);
textarea.setAttribute("id", "comment_dialog");
if ("comment" in map_data[current_sea]) {
textarea.value = map_data[current_sea].comment;
} else {
textarea.value = "";
}
document.rootElement.append(f);
f.append(textarea);
document.removeEventListener("keydown", onkeydown);
document.addEventListener("keydown", comment_keydown);
textarea.focus()
}
// let s = document.getElementById("Seas")
// let cs = s.children;
// for (let i=0; i < cs.length; i++) {
// let c = cs[i]
// if (c.getAttribute("id") === null) {
// c.setAttribute("stroke", "red");
// c.setAttribute("stroke-width", "50px");
// }
// }