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app/Http/Controllers/Main.php
Executable file
209
app/Http/Controllers/Main.php
Executable file
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<?php
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/**
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* Created by PhpStorm.
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* User: k
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* Date: 10.02.2017
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* Time: 20:10
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*/
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namespace App\Http\Controllers;
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use App\Paper\HtmlToPos;
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use Illuminate\Support\Facades\DB;
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use Mike42\Escpos\PrintConnectors\FilePrintConnector;
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use Mike42\Escpos\Printer;
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use Intervention\Image\ImageManagerStatic as Image;
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use Mike42\Escpos\EscposImage;
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use Illuminate\Http\Request;
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class Main extends Controller
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{
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public function imagePrint(Request $request)
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{
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if ($request->hasFile('photo')) {
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$file = $request->photo;
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} else {
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$file = $request->input('url');
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}
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$image = Image::make($file);
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if ($image->width() > $image->height()) {
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$image->rotate(90);
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}
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$image = $image->greyscale()
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->resize(300, null, function ($constraint) {
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$constraint->aspectRatio();
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$constraint->upsize();
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});
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$fileName = storage_path('temp.png');
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$image->save($fileName, 100);
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$img = imagecreatefrompng($fileName);
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// imagefilter($img, IMG_FILTER_GRAYSCALE);
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$width = imagesx($img);
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$height = imagesy($img);
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$img_arr = array();
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// Parse image (can be combined with dither stage, but combining them is slower.)
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for ($y = 0; $y < $height; $y++) {
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for ($x = 0; $x < $width; $x++) {
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$img_arr[$x][$y] = imagecolorat($img, $x, $y);
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}
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}
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// make a b/w output image.
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$output = imagecreate($width, $height);
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$black = imagecolorallocate($output, 0, 0, 0); //background color.
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$white = imagecolorallocate($output, 0xff, 0xff, 0xff);
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for ($y = 1; $y < $height - 3; $y++) {
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for ($x = 1; $x < $width - 3; $x++) {
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$old = $img_arr[$x][$y];
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if ($old > 0xffffff * .5) { // This is the b/w threshold. Currently @ halfway between white and black.
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$new = 0xffffff;
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imagesetpixel($output, $x, $y, $white); // Only setting white pixels, because the image is already black.
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} else {
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$new = 0x000000;
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}
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$quant_error = $old - $new;
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$error_diffusion = (1 / 8) * $quant_error; //I can do this because this dither uses 1 value for the applied error diffusion.
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//dithering here.
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$img_arr[$x + 1][$y] += $error_diffusion;
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$img_arr[$x + 2][$y] += $error_diffusion;
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$img_arr[$x - 1][$y + 1] += $error_diffusion;
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$img_arr[$x][$y + 1] += $error_diffusion;
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$img_arr[$x + 1][$y + 1] += $error_diffusion;
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$img_arr[$x][$y + 2] += $error_diffusion;
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}
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}
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// plop out a png of the dithered image.
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// Header("Content-type: image/png");
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imagepng($output, $fileName, 9); //to print to screen
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$connector = new FilePrintConnector("/dev/usb/lp0");
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$printer = new Printer($connector);
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$img = EscposImage::load($fileName, false);
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$printer->bitImage($img);
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$printer->feed(4);
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return back();
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}
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public function listView(Request $request)
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{
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$notes = DB::select('SELECT * FROM note ORDER BY updated_at DESC');
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return view('list', [
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'notes' => $notes,
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'title' => $request->old('title'),
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'text' => $request->old('text')
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]);
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}
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public function form(Request $request)
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{
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return view('create', [
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'title' => $request->old('title'),
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'text' => $request->old('text')
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]);
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}
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public function printText($id)
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{
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$note = DB::table('note')->where('id', $id)->first();
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$this->sendPrint($note->topic, $note->text);
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return back();
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}
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public function edit(Request $request, $id, $slug)
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{
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$note = DB::table('note')->where('id', $id)->first();
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if ($request->isMethod('post')) {
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if ($request->exists('save')) {
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DB::table('note')
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->where('id', $note->id)
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->update([
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'topic' => $request->input('title'),
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'topic_slug' => str_slug($request->input('title'), '_'),
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'text' => $request->input('text'),
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'updated_at' => time(),
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]);
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} elseif ($request->exists('delete')) {
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DB::table('note')
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->where('id', $note->id)
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->delete();
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return redirect()->route('list');
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} elseif ($request->exists('print')) {
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$this->sendPrint($request->input('title'), $request->input('text'));
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}
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return redirect()->route('edit', ['id' => $note->id, 'slug' => $note->topic_slug]);
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} else {
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return view('edit', [
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'title' => $note->topic,
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'text' => $note->text,
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'id' => $note->id,
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'topic_slug' => $note->topic_slug,
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]);
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}
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}
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public function sendPrint($title, $text)
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{
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$connector = new FilePrintConnector("/dev/usb/lp0");
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$printer = new Printer($connector);
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// $printer->setFont(Printer::FONT_B);
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if (strlen($title)) {
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$printer->setDoubleStrike(true);
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$printer->setJustification(Printer::JUSTIFY_CENTER);
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$printer->setEmphasis(true);
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$printer->text($title . "\n\n");
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$printer->setEmphasis(false);
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$printer->setJustification(Printer::JUSTIFY_LEFT);
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$printer->setDoubleStrike(false);
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}
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$htmlToPos = new HtmlToPos();
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$printer->text($htmlToPos->convert($text));
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$printer->feed(4);
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$printer->close();
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}
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public function main(Request $request)
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{
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if ($request->exists('save')) {
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$id = DB::table('note')
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->insertGetId([
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'topic' => $request->input('title'),
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'topic_slug' => str_slug($request->input('title'), '_'),
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'text' => $request->input('text'),
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'created_at' => time(),
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'updated_at' => time()
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]);
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$note = DB::table('note')->where('id', $id)->first();
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return redirect()->route('edit', ['id' => $note->id, 'slug' => $note->topic_slug]);
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} else {
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$this->sendPrint($request->input('title'), $request->input('text'));
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return back()->withInput();
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}
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}
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}
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