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// Author: cirakg & claude ai
// Summary: The Add code form (README 10.2): reads the code* fields, and CodeCheck, the job that proves a code encodes and fits.
//
// read() checks the fields that need no encoding (name, symbology, length).
// Whether the contents are valid for the symbology is decided by the real
// encoder (README 12.1), in CodeCheck:
// * Linear codes encode at once; the encoder's message ("EAN-13: check
// digit should be 7, got 3. Choose 'Fix if wrong' to correct it") becomes
// the status, and its note ("check digit 7 added") a remark.
// * 2D codes run their MatrixJob step by step (the watchdog), then the
// matrix is packed for the encrypted cache in a step of its own, so the
// first opening on the watch is instant.
// * A code that encodes but doesn't fit this screen is still added, with
// the "Too large for this screen" warning (README 12.2).
import Toybox.Lang;
import Toybox.System;
module CodeForm {
const SWITCH = "codeAdd";
const STATUS = "codeStatus";
const PAYLOAD = "codePayload";
const NAME_MAX_BYTES = Entry.MAX_NAME_BYTES;
const FIELDS = ["codeName", "codeSymbology", "codePayload", "codeEcLevel", "codeCheckDigit", "codeShowText", "codeGroup",
"codeLocked"];
// Field values after a reset (resources/settings/properties.xml);
// the contents first.
function defaults() as Dictionary<String, String or Number or Boolean> {
return {
PAYLOAD => "",
"codeName" => "",
"codeSymbology" => Codes.QR,
"codeEcLevel" => 1,
"codeCheckDigit" => Codes.CHECK_ADD_VERIFY,
"codeShowText" => true,
"codeGroup" => "",
"codeLocked" => false
} as Dictionary<String, String or Number or Boolean>;
}
// The entry described by the form (not yet checked by the encoder).
function read(store as Forms.Store) as Forms.Parsed {
var parsed = new Forms.Parsed("code");
for (var i = 0; i < FIELDS.size(); i++) {
parsed.content.add(store.get(FIELDS[i] as String));
}
var e = new Entry();
e.kind = Entry.KIND_CODE;
e.source = Entry.SOURCE_MANUAL;
e.name = Forms.text(store, "codeName");
e.group = Forms.text(store, "codeGroup");
e.locked = Forms.flag(store, "codeLocked");
if (e.name.length() == 0) {
return parsed.fail("Name: enter a name for the card");
}
var problem = Forms.checkName("Name", e.name, NAME_MAX_BYTES);
if (problem == null) {
problem = Forms.checkName("Group", e.group, Entry.MAX_GROUP_BYTES);
}
if (problem != null) {
return parsed.fail(problem);
}
var symbology = Forms.number(store, "codeSymbology");
if (symbology == null || symbology < Codes.QR || symbology > Codes.AZTEC) {
return parsed.fail("Type: choose one of the 12 barcode types");
}
e.type = symbology;
var ec = Forms.number(store, "codeEcLevel");
var check = Forms.number(store, "codeCheckDigit");
if (ec == null || ec < 0 || ec > Codes.OPT_EC_MASK) {
ec = 1;
}
if (check == null || check < Codes.CHECK_ADD_VERIFY || check > Codes.CHECK_OFF) {
check = Codes.CHECK_ADD_VERIFY;
}
e.options = ec | (check << Codes.OPT_CHECK_SHIFT) | (Forms.flag(store, "codeShowText") ? Codes.OPT_SHOW_TEXT : 0);
var payload = contents(Forms.rawText(store, PAYLOAD), symbology);
if (payload instanceof String) {
return parsed.fail(payload);
}
e.payload = payload;
parsed.entry = e;
return parsed;
}
// The contents as stored (trimmed for linear codes, whose digits are
// often typed with spaces around), or the problem.
function contents(text as String, symbology as Number) as ByteArray or String {
var value = Codes.isLinear(symbology) ? Text.trim(text) : text;
if (Text.trim(value).length() == 0) {
return "Contents: missing";
}
var bytes = Bytes.fromUtf8(value);
if (bytes.size() > Entry.MAX_PAYLOAD_BYTES) {
return "Contents: too long (" + bytes.size() + " bytes, at most " + Entry.MAX_PAYLOAD_BYTES + ")";
}
return bytes;
}
function reset(store as Forms.Store, everything as Boolean) as Void {
store.set(PAYLOAD, "");
if (everything) {
var d = defaults();
var keys = d.keys();
for (var i = 0; i < keys.size(); i++) {
store.set(keys[i], d[keys[i]] as String or Number or Boolean);
}
}
store.set(SWITCH, false);
}
}
// Encodes a code once to prove it is valid and to check that it fits this
// screen. When step() returns true: error is set, or the code is fine
// (notes may hold remarks) and, for 2D codes, cache holds the packed matrix
// (Codes.Packed).
class CodeCheck extends Jobs.Job {
// Linear codes draw with 10 quiet modules on each side (CodeView).
static const LINEAR_QUIET = 10;
var error as String? = null;
var notes as Array<String> = [] as Array<String>;
var cache as ByteArray? = null;
private var _symbology as Number;
private var _payload as String;
private var _options as Number;
private var _job as Codes.MatrixJob? = null;
private var _packer as Codes.Packer? = null;
private var _started as Boolean = false;
private var _w as Number;
private var _h as Number;
private var _round as Boolean;
function initialize(symbology as Number, payload as String, options as Number) {
Job.initialize();
_symbology = symbology;
_payload = payload;
_options = options;
var screen = System.getDeviceSettings();
_w = screen.screenWidth;
_h = screen.screenHeight;
_round = screen.screenShape == System.SCREEN_SHAPE_ROUND;
}
function step(budget as Number) as Boolean {
if (!_started) {
_started = true;
if (!Codes.isMatrix(_symbology)) {
checkLinear();
return true;
}
_job = Codes.matrixJob(_symbology, _payload, _options, _w, _h, _round);
_payload = "";
return false;
}
var packer = _packer;
if (packer != null) {
// Packing runs in steps of its own (it visits every module).
if (!packer.step(budget)) {
return false;
}
cache = packer.result;
_packer = null;
return true;
}
var job = _job as Codes.MatrixJob;
if (!job.step(budget)) {
return false;
}
_job = null;
var m = job.matrix();
var err = job.error;
if (err != null || m == null) {
error = withName(err != null ? err : "could not encode");
return true;
}
var totalW = m.width + 2 * m.quiet;
var totalH = m.drawnHeight() + 2 * m.quiet;
var px = Codes.minModulePx(_symbology);
if (!Codes.fits(totalW, totalH, px, _w, _h, _round)) {
notes.add("Too large for this screen: needs " + px + " px per module, " + totalW * px + " x " + totalH * px + " px");
}
_packer = new Codes.Packer(m);
return false;
}
private function checkLinear() as Void {
var result = Codes.encode(_symbology, _payload, _options);
_payload = "";
if (result instanceof Codes.CodeError) {
error = withName(result.message);
return;
}
var note = result.note;
if (note != null) {
notes.add(note);
}
// The widest band is a little under the screen width on round
// screens (CodeView measures it exactly when drawing).
var available = _round ? _w * 96 / 100 : _w - 4;
var needed = result.modules.size() + 2 * LINEAR_QUIET;
if (needed > available) {
notes.add("Too large for this screen: needs " + needed + " px, " + available + " px available");
}
}
// "too long for QR..." becomes "QR: too long for QR...", but a message
// that already names the symbology is kept as it is.
private function withName(message as String) as String {
var name = Codes.name(_symbology);
return message.find(name) == 0 ? message : name + ": " + message;
}
}
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