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/*****************************************************************************
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2022 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
*****************************************************************************/
"use strict";
import {tools, $} from "../tools.js";
import {wm} from "../wm.js";
export function Ocr(__getGeometry) {
var self = this;
/************************************************************************/
var __start_pos = null;
var __end_pos = null;
var __selection = null;
var __init__ = function() {
tools.el.setOnClick($("stream-ocr-button"), function() {
__resetSelection();
wm.showWindow($("stream-window"));
wm.showWindow($("stream-ocr-window"));
});
$("stream-ocr-lang-selector").addEventListener("change", function() {
tools.storage.set("stream.ocr.lang", $("stream-ocr-lang-selector").value);
});
$("stream-ocr-window").addEventListener("blur", __resetSelection);
$("stream-ocr-window").addEventListener("resize", __resetSelection);
$("stream-ocr-window").close_hook = __resetSelection;
$("stream-ocr-window").onkeyup = function(event) {
event.preventDefault();
if (event.code === "Enter") {
if (__selection) {
__recognizeSelection();
wm.closeWindow($("stream-ocr-window"));
}
} else if (event.code === "Escape") {
wm.closeWindow($("stream-ocr-window"));
}
};
$("stream-ocr-window").onmousedown = __startSelection;
$("stream-ocr-window").onmousemove = __changeSelection;
$("stream-ocr-window").onmouseup = __endSelection;
};
/************************************************************************/
self.setState = function(state) {
let enabled = (state && state.ocr.enabled && navigator.clipboard && !tools.browser.is_mobile);
if (enabled) {
let el = $("stream-ocr-lang-selector");
tools.selector.setValues(el, state.ocr.langs.available);
tools.selector.setSelectedValue(el, tools.storage.get("stream.ocr.lang", state.ocr.langs["default"]));
}
tools.feature.setEnabled($("stream-ocr"), enabled);
$("stream-ocr-led").className = (enabled ? "led-gray" : "hidden");
};
var __startSelection = function(event) {
if (__start_pos === null) {
tools.hidden.setVisible($("stream-ocr-selection"), false);
__start_pos = __getGlobalPosition(event);
__end_pos = null;
}
};
var __changeSelection = function(event) {
if (__start_pos !== null) {
__end_pos = __getGlobalPosition(event);
let width = Math.abs(__start_pos.x - __end_pos.x);
let height = Math.abs(__start_pos.y - __end_pos.y);
let el_selection = $("stream-ocr-selection");
el_selection.style.left = Math.min(__start_pos.x, __end_pos.x) + "px";
el_selection.style.top = Math.min(__start_pos.y, __end_pos.y) + "px";
el_selection.style.width = width + "px";
el_selection.style.height = height + "px";
tools.hidden.setVisible(el_selection, (width > 1 || height > 1));
}
};
var __endSelection = function(event) {
__changeSelection(event);
let el_selection = $("stream-ocr-selection");
let ok = (
el_selection.offsetWidth > 1 && el_selection.offsetHeight > 1
&& __start_pos !== null && __end_pos !== null
);
tools.hidden.setVisible(el_selection, ok);
if (ok) {
let rect = $("stream-box").getBoundingClientRect();
let rel_left = Math.min(__start_pos.x, __end_pos.x) - rect.left;
let rel_right = Math.max(__start_pos.x, __end_pos.x) - rect.left;
let offset = __getNavbarOffset();
let rel_top = Math.min(__start_pos.y, __end_pos.y) - rect.top + offset;
let rel_bottom = Math.max(__start_pos.y, __end_pos.y) - rect.top + offset;
let geo = __getGeometry();
__selection = {
"left": tools.remap(rel_left, geo.x, geo.width, 0, geo.real_width),
"right": tools.remap(rel_right, geo.x, geo.width, 0, geo.real_width),
"top": tools.remap(rel_top, geo.y, geo.height, 0, geo.real_height),
"bottom": tools.remap(rel_bottom, geo.y, geo.height, 0, geo.real_height),
};
} else {
__selection = null;
}
__start_pos = null;
__end_pos = null;
};
var __getGlobalPosition = function(event) {
let rect = $("stream-box").getBoundingClientRect();
let geo = __getGeometry();
let offset = __getNavbarOffset();
return {
"x": Math.min(Math.max(event.clientX, rect.left + geo.x), rect.right - geo.x),
"y": Math.min(Math.max(event.clientY - offset, rect.top + geo.y - offset), rect.bottom - geo.y - offset),
};
};
var __getNavbarOffset = function() {
if (tools.browser.is_firefox) {
// На лисе наблюдается оффсет из-за навбара, хз почему
return wm.getViewGeometry().top;
}
return 0;
};
var __resetSelection = function() {
tools.hidden.setVisible($("stream-ocr-selection"), false);
__start_pos = null;
__end_pos = null;
__selection = null;
};
var __recognizeSelection = function() {
tools.el.setEnabled($("stream-ocr-button"), false);
tools.el.setEnabled($("stream-ocr-lang-selector"), false);
$("stream-ocr-led").className = "led-yellow-rotating-fast";
let lang = $("stream-ocr-lang-selector").value;
let url = `/api/streamer/snapshot?ocr=1&ocr_langs=${lang}`;
url += `&ocr_left=${__selection.left}&ocr_top=${__selection.top}`;
url += `&ocr_right=${__selection.right}&ocr_bottom=${__selection.bottom}`;
let http = tools.makeRequest("GET", url, function() {
if (http.readyState === 4) {
if (http.status === 200) {
navigator.clipboard.writeText(http.responseText).then(function() {
wm.info("The text is copied to the clipboard");
}, function(err) {
wm.error("Can't copy text to the clipboard:<br>", err);
});
} else {
wm.error("OCR error:<br>", http.responseText);
}
tools.el.setEnabled($("stream-ocr-button"), true);
tools.el.setEnabled($("stream-ocr-lang-selector"), true);
$("stream-ocr-led").className = "led-gray";
}
}, null, null, 30000);
};
__init__();
}
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