public static function Create()
{
// Initial setup
$string = self::GenerateCode();
$font_file = INCLUDES_DIR . '/' . self::FONT;
$box = imagettfbboxextended(self::FONT_SIZE, 0, $font_file, $string);
$width = $box['width'] + self::PADDING_LEFT * 2;
$height = $box['height'] + self::PADDING_TOP * 2;
// Generate colors
//self::$foreground_color = array(rand(0,100),rand(0,100),rand(0,100));
//self::$background_color = array(rand(200,255),rand(200,255),rand(200,255));
// Setup the image
$image = imagecreatetruecolor($width, $height);
$foreground = imagecolorallocate($image, self::$foreground_color[0], self::$foreground_color[1], self::$foreground_color[2]);
$background = imagecolorallocate($image, self::$background_color[0], self::$background_color[1], self::$background_color[2]);
imagealphablending($image, true);
imagefill($image, 0, 0, $background);
// Draw characters
$offset = 0;
for ($i = 0; $i < strlen($string); $i++) {
$bb = imagettfbboxextended(self::FONT_SIZE, 0, $font_file, $string[$i]);
imagettftext($image, self::FONT_SIZE, 0, $box['x'] + self::PADDING_LEFT + $offset, $box['y'] + self::PADDING_TOP + rand(-5, 5), $foreground, $font_file, $string[$i]);
$offset += $bb['width'] + self::CHAR_OFFSET;
}
// Warp the text
$image = self::Warp($image, $width, $height);
// Set CAPTCHA cookie
$session = sha1(uniqid(rand(), true));
setcookie(self::COOKIE, $session, time() + self::EXPIRES, Config::Get('cookie_path'), Config::Get('cookie_domain'));
// Insert code into database
$DB = GetDB();
$DB->Update('DELETE FROM # WHERE `timestamp` < ?', array(self::TABLE, time() - self::EXPIRES));
$DB->Update("INSERT INTO # VALUES (?,?,?)", array(self::TABLE, $session, $string, time()));
// Output the image
if (function_exists('imagepng')) {
header('Content-type: image/png');
imagepng($image);
} else {
header('Content-type: image/jpeg');
imagejpeg($image, null, 95);
}
}
function GenerateAndDisplay()
{
global $C;
// Initial setup
$string = $this->GenerateCode();
$font_file = DIR_ASSETS . '/' . CAPTCHA_FONT;
$box = imagettfbboxextended(CAPTCHA_FONT_SIZE, 0, $font_file, $string);
$width = $box['width'] + CAPTCHA_PADDING_LEFT * 2;
$height = $box['height'] + CAPTCHA_PADDING_TOP * 2;
// Setup the image
$image = imagecreatetruecolor($width, $height);
$foreground = imagecolorallocate($image, $this->foreground_color[0], $this->foreground_color[1], $this->foreground_color[2]);
$background = imagecolorallocate($image, $this->background_color[0], $this->background_color[1], $this->background_color[2]);
imagealphablending($image, true);
imagefill($image, 0, 0, $background);
// Draw characters
$offset = 0;
for ($i = 0; $i < strlen($string); $i++) {
$bb = imagettfbboxextended(CAPTCHA_FONT_SIZE, 0, $font_file, $string[$i]);
imagettftext($image, CAPTCHA_FONT_SIZE, 0, $box['x'] + CAPTCHA_PADDING_LEFT + $offset, $box['y'] + CAPTCHA_PADDING_TOP + rand(-5, 5), $foreground, $font_file, $string[$i]);
$offset += $bb['width'] + CAPTCHA_CHAR_OFFSET;
}
// Warp the text
$image = $this->Warp($image, $width, $height);
// Set CAPTCHA cookie
$session = sha1(uniqid(rand(), true));
setcookie(CAPTCHA_COOKIE, $session, time() + CAPTCHA_EXPIRES, $C['cookie_path'], $C['cookie_domain']);
require_once 'textdb.php';
$db = new CaptchasDB();
$db->Add(array('session' => $session, 'code' => $string, 'timestamp' => time()));
// Output the image
if (function_exists('imagepng')) {
header('Content-type: image/png');
imagepng($image);
} else {
header('Content-type: image/jpeg');
imagejpeg($image, null, 95);
}
}
/**
* Draw the chord according to given parameters
*
*/
function draw($fname)
{
//header('Content-type: image/png');
$img = imagecreatetruecolor($this->width, $this->height);
if (!$img) {
throw new Exception('Cannot Initialize new GD image stream');
}
// Values computed and used for the drawing
//count number of strings and compute space between strings
$nbStrings = count($this->data);
$realWidth = $this->width - $this->margin['left'] - $this->margin['right'];
$stringSpacing = $realWidth / ($nbStrings - 1);
$upperSymbolSize = intval(round($stringSpacing * $this->upperSymbolSize));
//space needed to draw the "o" or "x"
$totalTopMargin = $this->margin['top'] + $upperSymbolSize;
$titleMargin = 0;
//if theres a title, compute additionnal top margin induced
if (!empty($this->title)) {
if (is_int($this->fontTitle)) {
$titleMargin = imagefontheight($this->fontTitle);
} else {
$box = imagettfbboxextended($this->fontTitleSize, 0, $this->fontTitle, $this->title);
$titleMargin = $box['height'];
}
}
$totalTopMargin += $titleMargin;
$realHeight = $this->height - $totalTopMargin - $this->margin['bottom'];
$fretsSpacing = $realHeight / $this->maxFrets;
//create colors
$bgColor = imagecolorallocate($img, $this->bgColor[0], $this->bgColor[1], $this->bgColor[2]);
$gridColor = imagecolorallocate($img, $this->gridColor[0], $this->gridColor[1], $this->gridColor[2]);
$symbolColor = imagecolorallocate($img, $this->symbolColor[0], $this->symbolColor[1], $this->symbolColor[2]);
//clear image with background color
imagefilledrectangle($img, 0, 0, $this->width, $this->height, $bgColor);
//if there is a background picture, set it
if (!empty($this->bgPicture)) {
$bg = file_get_contents($this->bgPicture);
if ($bg) {
$bgPic = imagecreatefromstring($bg);
if ($bgPic) {
imagecopy($img, $bgPic, 0, 0, 0, 0, $this->width, $this->height);
imagedestroy($bgPic);
}
}
}
//if there's a title, draw it
if (!empty($this->title)) {
if (is_int($this->fontTitle)) {
$font_width = imagefontwidth($this->fontTitle);
imagestring($img, $this->fontTitle, ($this->width - $font_width) / 2.0, $this->margin['top'], $this->title, $symbolColor);
} else {
$box = imagettfbboxextended($this->fontTitleSize, 0, $this->fontTitle, $this->title);
$font_width = $box['width'];
imagettftext($img, $this->fontTitleSize, 0, ($this->width - $font_width) / 2.0, $this->margin['top'] + $box['top'] - 4, $symbolColor, $this->fontTitle, $this->title);
}
}
//draw the strings
$xoffset = 0;
for ($i = 0; $i < $nbStrings; $i++) {
imageline($img, $this->margin['left'] + $xoffset, $totalTopMargin, $this->margin['left'] + $xoffset, $this->height - $this->margin['bottom'], $gridColor);
$xoffset += $stringSpacing;
}
//draw the frets
$yoffset = 0;
for ($i = 0; $i <= $this->maxFrets; $i++) {
if ($i == 0 && $this->startingFret == 0) {
//if the starting fret is 0 then we draw the nut
imagefilledrectangle($img, $this->margin['left'], $totalTopMargin + $yoffset, $this->width - $this->margin['right'], $totalTopMargin + $fretsSpacing * $this->nutSize, $gridColor);
} else {
imageline($img, $this->margin['left'], $totalTopMargin + $yoffset, $this->width - $this->margin['right'], $totalTopMargin + $yoffset, $gridColor);
}
$yoffset += $fretsSpacing;
}
//if the starting fret isn't 0 add a mention with a 2 pixel margin
if ($this->startingFret != 0) {
$str = sprintf('%dfr.', $this->startingFret);
if (is_int($this->fontStartingFret)) {
$font_height = imagefontheight($this->fontStartingFret);
imagestring($img, $this->fontStartingFret, $this->width - $this->margin['right'] + 2, $totalTopMargin - $font_height / 2.0, $str, $symbolColor);
} else {
$box = imagettfbboxextended($this->fontStartingFretSize, 0, $this->fontStartingFret, $str);
imagettftext($img, $this->fontStartingFretSize, 0, $this->width - $this->margin['right'] + 2, $totalTopMargin - $box['height'] / 2.0 + $box['top'], $symbolColor, $this->fontStartingFret, $str);
}
}
//draw chord
$xoffset = 0;
for ($i = 0; $i < $nbStrings; $i++) {
if ($this->data[$i] === 'x') {
if ($this->showUnstrummedStrings) {
imagecross($img, $this->margin['left'] + $xoffset - $upperSymbolSize / 2.0, $this->margin['top'] + $titleMargin - 1, $this->margin['left'] + $xoffset + $upperSymbolSize / 2.0, $this->margin['top'] + $titleMargin + $upperSymbolSize, $symbolColor);
}
} else {
$stringPos = intval($this->data[$i]);
if ($stringPos) {
$yoffset = $fretsSpacing / 2 + $fretsSpacing * ($stringPos - 1 - $this->startingFret);
//imagefilledellipse($img, $this->margin['left']+$xoffset, $this->margin['top'] + $yoffset, $fretsSpacing*$this->circleSize, $fretsSpacing*$this->circleSize, $gridColor);
imagesmoothcircle($img, $this->margin['left'] + $xoffset, $totalTopMargin + $yoffset, intval(round($fretsSpacing * $this->circleSize / 2.0)), array('R' => $this->symbolColor[0], 'G' => $this->symbolColor[1], 'B' => $this->symbolColor[2]));
} else {
if ($this->showZeros) {
imageellipse($img, $this->margin['left'] + $xoffset, $this->margin['top'] + $upperSymbolSize / 2.0 - 1 + $titleMargin, $upperSymbolSize, $upperSymbolSize, $symbolColor);
}
}
}
$xoffset += $stringSpacing;
}
//draw barre chords
if (count($this->barre)) {
$x1 = 0;
$x2 = 0;
$yoffset = 0;
foreach ($this->barre as $fret => $bar) {
$yoffset = $fretsSpacing / 2 + $fretsSpacing * ($fret - 1 - $this->startingFret);
$x1 = ($bar[0] - 1) * $stringSpacing;
$x2 = ($bar[1] - 1) * $stringSpacing;
imagesmoothcircle($img, $this->margin['left'] + $x1, $totalTopMargin + $yoffset, intval(round($fretsSpacing * $this->barreSize / 2.0)), array('R' => $this->symbolColor[0], 'G' => $this->symbolColor[1], 'B' => $this->symbolColor[2]));
imagesmoothcircle($img, $this->margin['left'] + $x2, $totalTopMargin + $yoffset, intval(round($fretsSpacing * $this->barreSize / 2.0)), array('R' => $this->symbolColor[0], 'G' => $this->symbolColor[1], 'B' => $this->symbolColor[2]));
imagefilledrectangle($img, $this->margin['left'] + $x1, $totalTopMargin + $yoffset - intval(round($fretsSpacing * $this->barreSize / 2.0)), $this->margin['left'] + $x2, $totalTopMargin + $yoffset + intval(round($fretsSpacing * $this->barreSize / 2.0)), $symbolColor);
}
}
$fname = str_replace('/', '_', $fname);
$fullfname = base_path() . '/public/images/chords/' . $fname . '.png';
imagepng($img, $fullfname);
imagedestroy($img);
}
