function ncurses_show_text($title, $text, $question, $keys = TRUE)
{
// prepare text
$textH = count($text);
$textW = 1;
$textLEN = array();
for ($i = 0; $i < $textH; $i++) {
$textLEN[$i] = strlen($text[$i]);
if ($textLEN[$i] > $textW) {
$textW = $textLEN[$i];
}
}
// create text pad (invisible window)
$textWIN = ncurses_newpad($textH, $textW);
// fill it with text
for ($i = 0; $i < $textH; $i++) {
ncurses_mvwaddstr($textWIN, $i, 0, $text[$i]);
}
// prepare question
$questionH = count($question);
$questionLastW = strlen($question[$questionH - 1]);
// initialize...
$posX = $posY = 0;
$screenH = $screenW = 0;
// loop around...
while (1) {
// get actual screen size
$oldH = $screenH;
$oldW = $screenW;
ncurses_getmaxyx(STDSCR, $screenH, $screenW);
// something changed?
if ($screenH != $oldH || $screenW != $oldW) {
if ($oldH > 0) {
ncurses_delwin($upperWIN);
ncurses_delwin($lowerWIN);
}
ncurses_erase();
ncurses_refresh(STDSCR);
$upperWIN = ncurses_newwin($screenH - (2 + $questionH), $screenW, 0, 0);
$lowerWIN = ncurses_newwin(2 + $questionH, $screenW, $screenH - (2 + $questionH), 0);
$upperH = $screenH - (4 + $questionH);
$upperW = $screenW - 2;
$copyH = $upperH > $textH ? $textH : $upperH;
$copyW = $upperW > $textW ? $textW : $upperW;
// border lower window
ncurses_wborder($lowerWIN, 0, 0, 0, 0, 0, 0, 0, 0);
// print text in lower window
for ($i = 0; $i < $questionH; $i++) {
ncurses_mvwaddstr($lowerWIN, $i + 1, 1, $question[$i]);
}
}
// check and fix positions
if ($posY < 0 || $upperH >= $textH) {
$posY = 0;
} else {
if ($upperH + $posY > $textH) {
$posY = $textH - $upperH;
}
}
if ($posX < 0 || $upperW >= $textW) {
$posX = 0;
} else {
if ($upperW + $posX > $textW) {
$posX = $textW - $upperW;
}
}
// border upper window
ncurses_wborder($upperWIN, 0, 0, 0, 0, 0, 0, 0, 0);
// draw title and info line
ncurses_wattron($upperWIN, NCURSES_A_REVERSE);
ncurses_mvwaddstr($upperWIN, 0, 2, ' ' . $title . ' ');
if ($upperH < $textH) {
ncurses_mvwaddstr($upperWIN, $upperH + 1, 2, ' line ' . ($posY + 1) . '-' . ($posY + $copyH) . '/' . $textH . ' ');
}
ncurses_wattroff($upperWIN, NCURSES_A_REVERSE);
// draw < and > at left/right side when horizontal scrolling is nesseccary
if ($upperW < $textW) {
for ($i = 0; $i < $copyH; $i++) {
if ($textLEN[$i + $posY] > $copyW + $posX) {
ncurses_mvwaddstr($upperWIN, $i + 1, $screenW - 1, '>');
}
if ($posX > 0 && $textLEN[$i + $posY] > 0) {
ncurses_mvwaddstr($upperWIN, $i + 1, 0, '<');
}
}
}
// draw upper window
ncurses_wrefresh($upperWIN);
// copy a part of the text (pad) to the screen
ncurses_prefresh($textWIN, $posY, $posX, 1, 1, $upperH, $upperW);
// move cursor to end of last line of question
ncurses_wmove($lowerWIN, $questionH, $questionLastW + 1);
// draw lower window
ncurses_wrefresh($lowerWIN);
// get a character and do...
$char = ncurses_getch();
if (is_array($keys) && array_search($char, $keys) !== FALSE) {
break;
} else {
if ($char == NCURSES_KEY_UP) {
$posY--;
} else {
if ($char == NCURSES_KEY_DOWN) {
$posY++;
} else {
if ($char == NCURSES_KEY_LEFT) {
$posX--;
} else {
if ($char == NCURSES_KEY_RIGHT) {
$posX++;
} else {
if ($char == NCURSES_KEY_PPAGE) {
$posY -= $copyH - 1;
} else {
if ($char == NCURSES_KEY_NPAGE) {
$posY += $copyH - 1;
} else {
if ($char == 362) {
// HOME
$posX = 0;
} else {
if ($char == 385) {
// END
$posX = 99999;
} else {
if ($char == 410 || $char == -1) {
// these "characters" are pressed on resizing
} else {
if ($keys === TRUE) {
break;
}
}
}
}
}
}
}
}
}
}
}
}
//end loop
// free all resources
ncurses_delwin($textWIN);
ncurses_delwin($upperWIN);
ncurses_delwin($lowerWIN);
// return the pressed character
return $char;
}
/**
* {@inheritdoc}
*/
public function refresh()
{
if (null === $this->pad) {
$this->createPad();
}
ncurses_werase($this->pad);
ncurses_wmove($this->pad, 0, 0);
$this->renderStackTrace($this->stackTrace);
ncurses_prefresh($this->pad, $this->decY, $this->decX, $this->padPositionY, $this->padPositionX, $this->padHeight + $this->padPositionY - 1, $this->padWidth - 1);
}
/**
* Refresh search pad content
*/
protected function refreshSearchPad()
{
if (!$this->showSearchPad) {
return;
}
$backgroundColor = $this->editSearchPad ? NCURSES_COLOR_YELLOW : NCURSES_COLOR_MAGENTA;
$length = 1;
if ($this->editSearchPad) {
// edit mode
$labels = array("ESC" => "Cancel", "ENTER" => "Done");
} else {
// not in edit mode
$labels = array("F9" => "Edit");
}
ncurses_werase($this->padSearch);
// write an empty space
ncurses_wattron($this->padSearch, NCURSES_A_REVERSE);
ncurses_wcolor_set($this->padSearch, $backgroundColor);
ncurses_waddstr($this->padSearch, " ");
ncurses_wattroff($this->padSearch, NCURSES_A_REVERSE);
// write key/labels
foreach ($labels as $key => $label) {
ncurses_wcolor_set($this->padSearch, 0);
ncurses_waddstr($this->padSearch, $key);
ncurses_wattron($this->padSearch, NCURSES_A_REVERSE);
ncurses_wcolor_set($this->padSearch, $backgroundColor);
ncurses_waddstr($this->padSearch, "{$label} ");
ncurses_wattroff($this->padSearch, NCURSES_A_REVERSE);
$length += strlen($key);
$length += strlen($label);
$length += 1;
}
// search box
$length += 2;
ncurses_wcolor_set($this->padSearch, 0);
ncurses_waddstr($this->padSearch, " ");
ncurses_wattron($this->padSearch, NCURSES_A_REVERSE);
ncurses_wcolor_set($this->padSearch, $backgroundColor);
if (!$this->editSearchPad) {
// show found occurences
$text = " [{$this->searchFoundOccurences} found]";
$length += strlen($text);
ncurses_waddstr($this->padSearch, $text);
}
ncurses_waddstr($this->padSearch, str_pad(" Search: {$this->searchText}", $this->padWidth - $length, " ", STR_PAD_RIGHT));
ncurses_wattroff($this->padSearch, NCURSES_A_REVERSE);
// display pad
ncurses_prefresh($this->padSearch, 0, 0, $this->padHeight + $this->padPositionY - 1, $this->padPositionX, $this->padHeight + $this->padPositionY - 1, $this->padWidth - 1);
}