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