Help Lỗi background thành đen khi chuyển ảnh sang GIF

Careless · 26/05/2017

Mình dùng PHPIMAGEWORKSHOP khi chuyển sang gif thì ảnh thành màu đen.
Ảnh sau khi chy\uyển sang GIF:

Các thành phần:

Blank.png

Code của mình:

PHP:

<?php
$rootpath = ''; 
require('main/_connect.php');
	use PHPImageWorkshop\ImageWorkshop;
	require_once($phpbb_root_path.'PHPImageWorkshop/ImageWorkshop.php');
	class GifCreator
{
    /**
     * @var string The gif string source (old: this->GIF)
     */
    private $gif;
    
    /**
     * @var string Encoder version (old: this->VER)
     */
	private $version;
    
    /**
     * @var boolean Check the image is build or not (old: this->IMG)
     */
    private $imgBuilt;

    /**
     * @var array Frames string sources (old: this->BUF)
     */
	private $frameSources;
    
    /**
     * @var integer Gif loop (old: this->LOP)
     */
	private $loop;
    
    /**
     * @var integer Gif dis (old: this->DIS)
     */
	private $dis;
    
    /**
     * @var integer Gif color (old: this->COL)
     */
	private $colour;
    
    /**
     * @var array (old: this->ERR)
     */
	private $errors;
 
    // Methods
    // ===================================================================================
    
    /**
     * Constructor
     */
    public function __construct()
    {
        $this->reset();
        
        // Static data
        $this->version = 'GifCreator: Under development';
        $this->errors = array(
            'ERR00' => 'Does not supported function for only one image.',
    		'ERR01' => 'Source is not a GIF image.',
    		'ERR02' => 'You have to give resource image variables, image URL or image binary sources in $frames array.',
    		'ERR03' => 'Does not make animation from animated GIF source.',
        );
    }

	/**
     * Create the GIF string (old: GIFEncoder)
     * 
     * @param array $frames An array of frame: can be file paths, resource image variables, binary sources or image URLs
     * @param array $durations An array containing the duration of each frame
     * @param integer $loop Number of GIF loops before stopping animation (Set 0 to get an infinite loop)
     * 
     * @return string The GIF string source
     */
	public function create($frames = array(), $durations = array(), $loop = 0)
    {
		if (!is_array($frames) && !is_array($GIF_tim)) {
            
            throw new \Exception($this->version.': '.$this->errors['ERR00']);
		}
        
		$this->loop = ($loop > -1) ? $loop : 0;
		$this->dis = 2;
        
		for ($i = 0; $i < count($frames); $i++) {
		  
			if (is_resource($frames[$i])) { // Resource var
                
                $resourceImg = $frames[$i];
                
                ob_start();
                imagegif($frames[$i]);
                $this->frameSources[] = ob_get_contents();
                ob_end_clean();
                
            } elseif (is_string($frames[$i])) { // File path or URL or Binary source code
			     
                if (file_exists($frames[$i]) || filter_var($frames[$i], FILTER_VALIDATE_URL)) { // File path
                    
                    $frames[$i] = file_get_contents($frames[$i]);                    
                }
                
                $resourceImg = imagecreatefromstring($frames[$i]);
                
                ob_start();
                imagegif($resourceImg);
                $this->frameSources[] = ob_get_contents();
                ob_end_clean();
                 
			} else { // Fail
                
                throw new \Exception($this->version.': '.$this->errors['ERR02'].' ('.$mode.')');
			}
            
            if ($i == 0) {
                
                $colour = imagecolortransparent($resourceImg);
            }
            
			if (substr($this->frameSources[$i], 0, 6) != 'GIF87a' && substr($this->frameSources[$i], 0, 6) != 'GIF89a') {
			 
                throw new \Exception($this->version.': '.$i.' '.$this->errors['ERR01']);
			}
            
			for ($j = (13 + 3 * (2 << (ord($this->frameSources[$i] { 10 }) & 0x07))), $k = TRUE; $k; $j++) {
			 
				switch ($this->frameSources[$i] { $j }) {
				    
					case '!':
                    
						if ((substr($this->frameSources[$i], ($j + 3), 8)) == 'NETSCAPE') {
                            
                            throw new \Exception($this->version.': '.$this->errors['ERR03'].' ('.($i + 1).' source).');
						}
                        
					break;
                        
					case ';':
                    
						$k = false;
					break;
				}
			}
            
            unset($resourceImg);
		}
		
        if (isset($colour)) {
            
            $this->colour = $colour;
                                    
        } else {
            
            $red = $green = $blue = 0;
            $this->colour = ($red > -1 && $green > -1 && $blue > -1) ? ($red | ($green << 8) | ($blue << 16)) : -1;
        }
        
		$this->gifAddHeader();
        
		for ($i = 0; $i < count($this->frameSources); $i++) {
		  
			$this->addGifFrames($i, $durations[$i]);
		}
        
		$this->gifAddFooter();
        
        return $this->gif;
	}
    
    // Internals
    // ===================================================================================
    
	/**
     * Add the header gif string in its source (old: GIFAddHeader)
     */
	public function gifAddHeader()
    {
		$cmap = 0;

		if (ord($this->frameSources[0] { 10 }) & 0x80) {
		  
			$cmap = 3 * (2 << (ord($this->frameSources[0] { 10 }) & 0x07));

			$this->gif .= substr($this->frameSources[0], 6, 7);
			$this->gif .= substr($this->frameSources[0], 13, $cmap);
			$this->gif .= "!\377\13NETSCAPE2.0\3\1".$this->encodeAsciiToChar($this->loop)."\0";
		}
	}
    
	/**
     * Add the frame sources to the GIF string (old: GIFAddFrames)
     * 
     * @param integer $i
     * @param integer $d
     */
	public function addGifFrames($i, $d)
    {
		$Locals_str = 13 + 3 * (2 << (ord($this->frameSources[ $i ] { 10 }) & 0x07));

		$Locals_end = strlen($this->frameSources[$i]) - $Locals_str - 1;
		$Locals_tmp = substr($this->frameSources[$i], $Locals_str, $Locals_end);

		$Global_len = 2 << (ord($this->frameSources[0 ] { 10 }) & 0x07);
		$Locals_len = 2 << (ord($this->frameSources[$i] { 10 }) & 0x07);

		$Global_rgb = substr($this->frameSources[0], 13, 3 * (2 << (ord($this->frameSources[0] { 10 }) & 0x07)));
		$Locals_rgb = substr($this->frameSources[$i], 13, 3 * (2 << (ord($this->frameSources[$i] { 10 }) & 0x07)));

		$Locals_ext = "!\xF9\x04".chr(($this->dis << 2) | 1 + 0).chr(($d >> 0 ) & 0xFF).chr(($d >> 8) & 0xFF)."\x0\x0";

		if ($this->colour > -1 && ord($this->frameSources[$i] { 10 }) & 0x80) {
		  
			for ($j = 0; $j < (2 << (ord($this->frameSources[$i] { 10 } ) & 0x07)); $j++) {
			 
				if (ord($Locals_rgb { 3 * $j + 0 }) == (($this->colour >> 16) & 0xFF) &&
					ord($Locals_rgb { 3 * $j + 1 }) == (($this->colour >> 8) & 0xFF) &&
					ord($Locals_rgb { 3 * $j + 2 }) == (($this->colour >> 0) & 0xFF)
				) {
					$Locals_ext = "!\xF9\x04".chr(($this->dis << 2) + 1).chr(($d >> 0) & 0xFF).chr(($d >> 8) & 0xFF).chr($j)."\x0";
					break;
				}
			}
		}
        
		switch ($Locals_tmp { 0 }) {
		  
			case '!':
            
				$Locals_img = substr($Locals_tmp, 8, 10);
				$Locals_tmp = substr($Locals_tmp, 18, strlen($Locals_tmp) - 18);
                                
			break;
                
			case ',':
            
				$Locals_img = substr($Locals_tmp, 0, 10);
				$Locals_tmp = substr($Locals_tmp, 10, strlen($Locals_tmp) - 10);
                                
			break;
		}
        
		if (ord($this->frameSources[$i] { 10 }) & 0x80 && $this->imgBuilt) {
		  
			if ($Global_len == $Locals_len) {
			 
				if ($this->gifBlockCompare($Global_rgb, $Locals_rgb, $Global_len)) {
				    
					$this->gif .= $Locals_ext.$Locals_img.$Locals_tmp;
                    
				} else {
				    
					$byte = ord($Locals_img { 9 });
					$byte |= 0x80;
					$byte &= 0xF8;
					$byte |= (ord($this->frameSources[0] { 10 }) & 0x07);
					$Locals_img { 9 } = chr($byte);
					$this->gif .= $Locals_ext.$Locals_img.$Locals_rgb.$Locals_tmp;
				}
                
			} else {
			 
				$byte = ord($Locals_img { 9 });
				$byte |= 0x80;
				$byte &= 0xF8;
				$byte |= (ord($this->frameSources[$i] { 10 }) & 0x07);
				$Locals_img { 9 } = chr($byte);
				$this->gif .= $Locals_ext.$Locals_img.$Locals_rgb.$Locals_tmp;
			}
            
		} else {
		  
			$this->gif .= $Locals_ext.$Locals_img.$Locals_tmp;
		}
        
		$this->imgBuilt = true;
	}
    
	/**
     * Add the gif string footer char (old: GIFAddFooter)
     */
	public function gifAddFooter()
    {
		$this->gif .= ';';
	}
    
	/**
     * Compare two block and return the version (old: GIFBlockCompare)
     * 
     * @param string $globalBlock
     * @param string $localBlock
     * @param integer $length
     * 
     * @return integer
	 */
	public function gifBlockCompare($globalBlock, $localBlock, $length)
    {
		for ($i = 0; $i < $length; $i++) {
		  
			if ($globalBlock { 3 * $i + 0 } != $localBlock { 3 * $i + 0 } ||
				$globalBlock { 3 * $i + 1 } != $localBlock { 3 * $i + 1 } ||
				$globalBlock { 3 * $i + 2 } != $localBlock { 3 * $i + 2 }) {
				
                return 0;
			}
		}

		return 1;
	}
    
	/**
     * Encode an ASCII char into a string char (old: GIFWord)
     * 
     * $param integer $char ASCII char
     * 
     * @return string
	 */
	public function encodeAsciiToChar($char)
    {
		return (chr($char & 0xFF).chr(($char >> 8) & 0xFF));
	}
    
    /**
     * Reset and clean the current object
     */
    public function reset()
    {
        $this->frameSources;
        $this->gif = 'GIF89a'; // the GIF header
        $this->imgBuilt = false;
        $this->loop = 0;
        $this->dis = 2;
        $this->colour = -1;
    }
    
    // Getter / Setter
    // ===================================================================================
    
	/**
     * Get the final GIF image string (old: GetAnimation)
     * 
     * @return string
	 */
	public function getGif()
    {
		return $this->gif;
	}
}
$base = ImageWorkshop::initFromPath($rootpath.'/learnecom/images/blank.png'); //tao anh trong
$base2 = ImageWorkshop::initFromPath($rootpath.'/learnecom/images/blank.png'); //tao anh trong (2)


$canh=ImageWorkshop::initFromPath($rootpath.'/learnecom/images/canh/2.png');
$base->addLayerOnTop($canh, 0, 10, "LB");


$canh=ImageWorkshop::initFromPath($rootpath.'/learnecom/equip/quanao/m/5.png');
$base->addLayerOnTop($canh, 0, 0, "LB");
$base2->addLayerOnTop($canh, 0, 0, "LB");
$canh=ImageWorkshop::initFromPath($rootpath.'/learnecom/equip/bieucam/m/3.png');
$base->addLayerOnTop($canh, 0, 0, "LB");
$canh=ImageWorkshop::initFromPath($rootpath.'/learnecom/equip/bieucam/m/3-2.png');
$base2->addLayerOnTop($canh, 0, 0, "LB");
$canh=ImageWorkshop::initFromPath($rootpath.'/learnecom/images/toc/1.png');
$base->addLayerOnTop($canh, 0, 0, "LB");
$base2->addLayerOnTop($canh, 0, 0, "LB");

$canh=ImageWorkshop::initFromPath($rootpath.'/learnecom/images/kinh/7.png');
$base->addLayerOnTop($canh, 0, 0, "LB");


$canh=ImageWorkshop::initFromPath($rootpath.'/learnecom/images/non/25.png');
$base->addLayerOnTop($canh, 0, 0, "LB");


$canh=ImageWorkshop::initFromPath($rootpath.'/learnecom/images/vukhi/2.png');
$base->addLayerOnTop($canh, 0, 0, "LB");

$desiredWidth = 120;
$desiredHeight = 150;
$image = $base->getResult();
$image2 = $base2->getResult();
$frames = array($image,$image2);
$durations = array(150, 50);
$gc = new GifCreator();
$gc->create($frames, $durations, 0);
$gifBinary = $gc->getGif();
header('Content-type: image/gif');
echo $gifBinary;
exit;
?>

Cảm ơn, nếu như sai box BQT nhắc nhở hộ ạ, thực sự mình đã loay hoay mãi mà k sao fix được

aviaiva · 26/05/2017

thêm một thuộc tính bakground:white vào sau khung đựng cái ảnh đó xem có được không

Careless · 26/05/2017

Mình cần background trong suốt cơ

Careless · 26/05/2017

aviaiva nói:
thêm một thuộc tính bakground:white vào sau khung đựng cái ảnh đó xem có được không

Mình cần background trong suốt cơ

aviaiva · 26/05/2017

Careless nói:
Mình cần background trong suốt cơ

background của cái ảnh thì nó vẫn trong suốt, nhưng khung đựng cái ảnh đó thì để background là white xem nó còn bị đen nữa không.

Careless · 26/05/2017

aviaiva nói:
background của cái ảnh thì nó vẫn trong suốt, nhưng khung đựng cái ảnh đó thì để background là white xem nó còn bị đen nữa không.

Mình làm được rồi nhưng bây giờ nó lại bị nhòe @@

Mã:

$image = $base->getResult();
$image2 = $base2->getResult();

ob_start();
$fill = imagecolorallocate($image, 255, 255, 255,127);
imagecolortransparent($image, $fill);
imagefill($image, 0, 0, $fill);
imagealphablending($image, false);
imagesavealpha($image, true);
imagegif($image);
$frames[]=ob_get_contents();
$framed[]=150; // Delay in the animation.
ob_end_clean();
ob_start();
$fill = imagecolorallocate($image2, 100,100,100, 127);
imagecolortransparent($image2, $fill);
imagefill($image2, 0, 0, $fill);
imagealphablending($image2, false);
imagesavealpha($image2, true);
imagegif($image2);
$frames[]=ob_get_contents();
$framed[]=50; // Delay in the animation.
ob_end_clean();

$gif = new GIFEncoder($frames,$framed,0,2,0,0,0,'bin');

header('Content-type: image/gif');
echo $gif->GetAnimation();
exit;

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Help Lỗi background thành đen khi chuyển ảnh sang GIF

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