PHP _image_decale_composante Examples

Example #1

File: filtres_images_compat.php Project: genma/spip_ynh

function image_decal_couleur($coul, $gamma)
{
    include_spip('filtres/images_lib');
    return _image_decale_composante($coul, $gamma);
}

Example #2

File: images_transforme.php Project: xablen/Semaine14_SPIP_test

function image_gamma($im, $gamma = 0)
{
    include_spip('filtres/images_lib');
    $fonction = array('image_gamma', func_get_args());
    $image = _image_valeurs_trans($im, "gamma-{$gamma}", false, $fonction);
    if (!$image) {
        return "";
    }
    $x_i = $image["largeur"];
    $y_i = $image["hauteur"];
    $im = $image["fichier"];
    $dest = $image["fichier_dest"];
    $creer = $image["creer"];
    if ($creer) {
        // Creation de l'image en deux temps
        // de facon a conserver les GIF transparents
        $im = $image["fonction_imagecreatefrom"]($im);
        imagepalettetotruecolor($im);
        $im_ = imagecreatetruecolor($x_i, $y_i);
        @imagealphablending($im_, false);
        @imagesavealpha($im_, true);
        $color_t = ImageColorAllocateAlpha($im_, 255, 255, 255, 127);
        imagefill($im_, 0, 0, $color_t);
        imagecopy($im_, $im, 0, 0, 0, 0, $x_i, $y_i);
        for ($x = 0; $x < $x_i; $x++) {
            for ($y = 0; $y < $y_i; $y++) {
                $rgb = ImageColorAt($im_, $x, $y);
                $a = $rgb >> 24 & 0xff;
                $r = $rgb >> 16 & 0xff;
                $g = $rgb >> 8 & 0xff;
                $b = $rgb & 0xff;
                $r = _image_decale_composante($r, $gamma);
                $g = _image_decale_composante($g, $gamma);
                $b = _image_decale_composante($b, $gamma);
                $color = ImageColorAllocateAlpha($im_, $r, $g, $b, $a);
                imagesetpixel($im_, $x, $y, $color);
            }
        }
        _image_gd_output($im_, $image);
    }
    return _image_ecrire_tag($image, array('src' => $dest));
}