clrghouz/app/Classes/Page.php

294 lines
8.4 KiB
PHP

<?php
namespace App\Classes;
use Illuminate\Support\Arr;
/**
* Page layout is as follows
*
* |----------|--------------|
* | LOGO | HEADER |
* | LEFT BOX | TEXT |
* |----------|--------------|
*/
class Page
{
protected const MSG_WIDTH = 78;
private const LOGO_OFFSET_WIDTH = 1;
private Font $header;
private string $header_foot = '';
private bool $header_right;
private int $header_underline = 0;
private Font $left_box;
private ANSI $logo;
private int $step = 0;
private string $text = '';
private bool $text_right = FALSE;
public function __construct(bool $crlf=FALSE)
{
$this->header = new Font;
$this->logo = new ANSI;
$this->left_box = new Font;
$this->crlf = $crlf;
$this->text = '';
}
public function __get($key)
{
switch ($key) {
// Height of the header
case 'header_height':
return $this->header->height+($this->header_foot ? 1 : 0)+($this->header_underline ? 1 : 0);
// The width of the left column
case 'left_width':
return $this->logo->width->max() ?: $this->left_box->width;
// The height of the left column
case 'left_height':
return $this->logo->height+$this->left_box->height+self::LOGO_OFFSET_WIDTH;
// The right width
case 'right_width':
return self::MSG_WIDTH-$this->left_width;
default:
throw new \Exception(sprintf('Unknown key %s',$key));
}
}
/**
* Message header - goes at top, right of logo
*
* @param Font $text
* @param string $foot
* @param bool $right
* @param int $underline
* @throws \Exception
*/
public function addHeader(Font $text,string $foot='',bool $right=FALSE,int $underline=0): void
{
if (($text->width > $this->right_width) || (strlen($foot) > $this->right_width))
throw new \Exception(sprintf('Header or Header Footer greater than available width'));
$this->header = $text;
$this->header_foot = $foot;
$this->header_right = $right;
$this->header_underline = $underline;
}
/**
* Content that can go below logo, to the left of the text, if text $logo_left_border is TRUE
*
* @param Font $text
* @throws \Exception
*/
public function addLeftBoxContent(Font $text): void
{
if ($this->left_width && ($text->width > $this->left_width))
throw new \Exception(sprintf('Leftbox content greater than icon width'));
$this->left_box = $text;
}
/**
* Message logo - goes at top left
*
* @param ANSI $ansi
*/
public function addLogo(ANSI $ansi): void
{
$this->logo = $ansi;
}
/**
* Message text, goes after header, and if a logo, to the right of it
*
* @param string $text Main Body Text
* @param bool $right Right Aligned
*/
public function addText(string $text,bool $right=FALSE)
{
$this->text .= $text;
$this->text_right = $right;
}
/**
* Render the page.
*
* @return string
* @throws \Exception
*/
public function render(): string
{
$result = '';
$result_height = 0;
$current_pos = 0;
$text_length = strlen($this->text);
$this->step = 0; // @todo temp
$text_current_color = NULL;
while (TRUE) {
$result_line = ''; // Line being created
$lc = 0; // Line length count (without ANSI control codes)
// The buffer represents how many spaces need to pad between the left_width and whatever is drawn on the left
if (! $this->step) {
if (($this->left_height > $this->header_height) || ($result_height < $this->header_height-1))
$buffer = $this->left_width+($this->left_width ? self::LOGO_OFFSET_WIDTH*2 : 0);
else
$buffer = 0;
} else {
$buffer = 0;
/*
// @todo
$buffer = $this->step
? $this->logo->width->skip(intdiv($result_height,$this->step)*$this->step)->take($this->step)->max()
: 1;
*/
}
if ($this->left_width) {
// Add our logo
if ($result_height < $this->logo->height) {
$line = ANSI::bin_to_ansi([$this->logo->line($result_height)],FALSE);
$lc = $this->logo->line_width($this->logo->line_raw($result_height),FALSE);
$result_line = str_repeat(' ',self::LOGO_OFFSET_WIDTH)
.$line
.str_repeat(' ',$buffer-$lc-($this->left_width ? self::LOGO_OFFSET_WIDTH : 0));
} elseif (self::LOGO_OFFSET_WIDTH && $this->logo->height && ($result_height === $this->logo->height) && $this->left_box->height) {
$result_line = str_repeat(' ',$buffer);
} elseif ($result_height < $this->left_height-($this->logo->height ? 0 : self::LOGO_OFFSET_WIDTH)) {
$line = $this->left_box->render_line($result_height-($this->logo->height ? self::LOGO_OFFSET_WIDTH : 0)-$this->logo->height);
$lc = $this->left_box->width;
$result_line = str_repeat(' ',($this->left_box->width ? self::LOGO_OFFSET_WIDTH : 0))
.$line
.str_repeat(' ',($this->left_box->width ? $buffer-$lc-($this->left_width ? self::LOGO_OFFSET_WIDTH : 0) : (($current_pos < $text_length) ? $buffer : 0)));
} else {
if ($current_pos < $text_length)
$result_line = str_repeat(' ',$buffer);
}
}
// Add our header
if ($result_height <= $this->header->height-1) {
$result_line .= str_repeat(' ',$this->header_right ? self::MSG_WIDTH-($this->left_width ? self::LOGO_OFFSET_WIDTH*2 : 0)-$this->left_width-$this->header->width : 0)
.$this->header->render_line($result_height);
}
// Add our header footer
if ($x=ANSI::line_width($this->header_foot,FALSE)) {
if ($result_height === $this->header->height) {
$result_line .= str_repeat(' ',($this->header_right ? self::MSG_WIDTH-($this->left_width ? self::LOGO_OFFSET_WIDTH*2 : 0)-$this->left_width-$x : 0))
.ANSI::text_to_ansi($this->header_foot);
}
}
// Add our header underline
if ($this->header_underline) {
if ($result_height === $this->header->height+($this->header_foot ? 1 : 0)) {
$result_line .= str_repeat(chr($this->header_underline),self::MSG_WIDTH-$buffer);
}
}
$subtext = '';
$subtext_ansi = '';
$subtext_length = 0;
if ($current_pos < $text_length) {
if ($result_height >= $this->header_height) {
// Look for a return
$return_pos = strpos($this->text,"\r",$current_pos);
// We have a return
if ($return_pos !== FALSE) {
// If the remaining text is within our width, we'll use it all.
if ($return_pos-$current_pos < self::MSG_WIDTH-$buffer) {
$subtext = substr($this->text,$current_pos,$return_pos-$current_pos);
// Look for the space.
} else {
$space_pos = strrpos(substr($this->text,$current_pos,($return_pos-$current_pos > static::MSG_WIDTH-$this->left_width ? static::MSG_WIDTH-$this->left_width : $return_pos-$current_pos)),' ');
$subtext = substr($this->text,$current_pos,$space_pos);
}
// If the reset of the string will fit on the current line
} elseif ($text_length-$current_pos < static::MSG_WIDTH-$buffer) {
$subtext = substr($this->text,$current_pos);
// Get the next lines worth of chars
} else {
$subtext = $this->text_substr(substr($this->text,$current_pos),static::MSG_WIDTH-$buffer);
// Include the text up to the last space
if (substr($this->text,$current_pos+strlen($subtext),1) !== ' ')
$subtext = substr($subtext,0,strrpos($subtext,' '));
}
$current_pos += strlen($subtext)+1;
}
if ($subtext) {
$subtext_length = ANSI::line_width($subtext,FALSE);
$subtext_ansi = ANSI::text_to_ansi(($text_current_color ? "\x1b".$text_current_color : '').$subtext);
// Get our last color used, for the next line.
$m = [];
preg_match('/^.*(\x1b(.))+(.*?)$/s',$subtext,$m);
if (Arr::get($m,2))
$text_current_color = $m[2];
}
}
if ($result_line || $subtext) {
$result .= $result_line.
($subtext_ansi
? str_repeat(' ',
($this->text_right && ($result_height > $this->header_height-1) ? static::MSG_WIDTH-$subtext_length-$buffer : 0)).$subtext_ansi
: '');
$result .= $this->crlf ? "\n\r" : "\r";
}
$result_height++;
if (($result_height > $this->logo->height) &&
($result_height > $this->left_height) &&
($current_pos >= $text_length))
{
break;
}
}
return $result;
}
private function text_substr(string $text,int $goal): string
{
$chars = $goal;
while (($x=ANSI::line_width($subtext=substr($text,0,$chars),FALSE)) < $goal) {
$chars += ($chars-$x);
}
// If the last char is an escape, we need to more chars until the last char is no longer an escape.
while (preg_match('/\x1b$/',$subtext) && (strlen($subtext) < strlen($text))) {
$subtext .= substr($text,strlen($subtext),2);
}
return $subtext;
}
}