/**
* @return string
*/
public function getAveragePixelColor()
{
$this->intervention->resize(1, 1);
$color = substr($this->intervention->pickColor(0, 0, 'hex'), 1);
$this->intervention->reset();
return $color;
}
/**
* Calculates checksum of given image
*
* @param \Intervention\Image\Image $image
* @return boolean
*/
public function execute($image)
{
$colors = array();
$size = $image->getSize();
for ($x = 0; $x <= $size->width - 1; $x++) {
for ($y = 0; $y <= $size->height - 1; $y++) {
$colors[] = $image->pickColor($x, $y, 'array');
}
}
$this->setOutput(md5(serialize($colors)));
return true;
}
/**
* Applies an alpha mask to an image
*
* @param \Intervention\Image\Image $image
* @return boolean
*/
public function execute($image)
{
$mask_source = $this->argument(0)->value();
$mask_w_alpha = $this->argument(1)->type('bool')->value(false);
$image_size = $image->getSize();
// create empty canvas
$canvas = $image->getDriver()->newImage($image_size->width, $image_size->height, array(0, 0, 0, 0));
// build mask image from source
$mask = $image->getDriver()->init($mask_source);
$mask_size = $mask->getSize();
// resize mask to size of current image (if necessary)
if ($mask_size != $image_size) {
$mask->resize($image_size->width, $image_size->height);
}
imagealphablending($canvas->getCore(), false);
if (!$mask_w_alpha) {
// mask from greyscale image
imagefilter($mask->getCore(), IMG_FILTER_GRAYSCALE);
}
// redraw old image pixel by pixel considering alpha map
for ($x = 0; $x < $image_size->width; $x++) {
for ($y = 0; $y < $image_size->height; $y++) {
$color = $image->pickColor($x, $y, 'array');
$alpha = $mask->pickColor($x, $y, 'array');
if ($mask_w_alpha) {
$alpha = $alpha[3];
// use alpha channel as mask
} else {
if ($alpha[3] == 0) {
// transparent as black
$alpha = 0;
} else {
// $alpha = floatval(round((($alpha[0] + $alpha[1] + $alpha[3]) / 3) / 255, 2));
// image is greyscale, so channel doesn't matter (use red channel)
$alpha = floatval(round($alpha[0] / 255, 2));
}
}
// preserve alpha of original image...
if ($color[3] < $alpha) {
$alpha = $color[3];
}
// replace alpha value
$color[3] = $alpha;
// redraw pixel
$canvas->pixel($color, $x, $y);
}
}
// replace current image with masked instance
$image->setCore($canvas->getCore());
return true;
}
/**
* Trims away parts of an image
*
* @param \Intervention\Image\Image $image
* @return boolean
*/
public function execute($image)
{
$base = $this->argument(0)->type('string')->value();
$away = $this->argument(1)->value();
$tolerance = $this->argument(2)->type('numeric')->value(0);
$feather = $this->argument(3)->type('numeric')->value(0);
$width = $image->getWidth();
$height = $image->getHeight();
// default values
$checkTransparency = false;
// define borders to trim away
if (is_null($away)) {
$away = array('top', 'right', 'bottom', 'left');
} elseif (is_string($away)) {
$away = array($away);
}
// lower border names
foreach ($away as $key => $value) {
$away[$key] = strtolower($value);
}
// define base color position
switch (strtolower($base)) {
case 'transparent':
case 'trans':
$checkTransparency = true;
$base_x = 0;
$base_y = 0;
break;
case 'bottom-right':
case 'right-bottom':
$base_x = $width - 1;
$base_y = $height - 1;
break;
default:
case 'top-left':
case 'left-top':
$base_x = 0;
$base_y = 0;
break;
}
// pick base color
if ($checkTransparency) {
$color = new Color();
// color will only be used to compare alpha channel
} else {
$color = $image->pickColor($base_x, $base_y, 'object');
}
$top_x = 0;
$top_y = 0;
$bottom_x = $width;
$bottom_y = $height;
// search upper part of image for colors to trim away
if (in_array('top', $away)) {
for ($y = 0; $y < ceil($height / 2); $y++) {
for ($x = 0; $x < $width; $x++) {
$checkColor = $image->pickColor($x, $y, 'object');
if ($checkTransparency) {
$checkColor->r = $color->r;
$checkColor->g = $color->g;
$checkColor->b = $color->b;
}
if ($color->differs($checkColor, $tolerance)) {
$top_y = max(0, $y - $feather);
break 2;
}
}
}
}
// search left part of image for colors to trim away
if (in_array('left', $away)) {
for ($x = 0; $x < ceil($width / 2); $x++) {
for ($y = $top_y; $y < $height; $y++) {
$checkColor = $image->pickColor($x, $y, 'object');
if ($checkTransparency) {
$checkColor->r = $color->r;
$checkColor->g = $color->g;
$checkColor->b = $color->b;
}
if ($color->differs($checkColor, $tolerance)) {
$top_x = max(0, $x - $feather);
break 2;
}
}
}
}
// search lower part of image for colors to trim away
if (in_array('bottom', $away)) {
for ($y = $height - 1; $y >= floor($height / 2) - 1; $y--) {
for ($x = $top_x; $x < $width; $x++) {
$checkColor = $image->pickColor($x, $y, 'object');
if ($checkTransparency) {
$checkColor->r = $color->r;
$checkColor->g = $color->g;
$checkColor->b = $color->b;
}
if ($color->differs($checkColor, $tolerance)) {
$bottom_y = min($height, $y + 1 + $feather);
break 2;
}
}
}
}
// search right part of image for colors to trim away
if (in_array('right', $away)) {
for ($x = $width - 1; $x >= floor($width / 2) - 1; $x--) {
for ($y = $top_y; $y < $bottom_y; $y++) {
$checkColor = $image->pickColor($x, $y, 'object');
if ($checkTransparency) {
$checkColor->r = $color->r;
$checkColor->g = $color->g;
$checkColor->b = $color->b;
}
if ($color->differs($checkColor, $tolerance)) {
$bottom_x = min($width, $x + 1 + $feather);
break 2;
}
}
}
}
// trim parts of image
return $this->modify($image, 0, 0, $top_x, $top_y, $bottom_x - $top_x, $bottom_y - $top_y, $bottom_x - $top_x, $bottom_y - $top_y);
}
public function testBackupKeepTransparency($value = '')
{
$img = new Image('public/circle.png');
$img->backup();
$img->reset();
$transparent = array('r' => 0, 'g' => 0, 'b' => 0, 'a' => 0.0);
$this->assertEquals($transparent, $img->pickColor(0, 0, 'array'));
}
/**
* Picks and formats color at position
*
* @param int $x
* @param int $y
* @param string $format
* @return mixed
* @static
*/
public static function pickColor($x, $y, $format = null)
{
return \Intervention\Image\Image::pickColor($x, $y, $format);
}
/**
* Trims away parts of an image
*
* @param \Intervention\Image\Image $image
* @return boolean
*/
public function execute($image)
{
$base = $this->argument(0)->type('string')->value();
$away = $this->argument(1)->value();
$tolerance = $this->argument(2)->type('numeric')->value(0);
$feather = $this->argument(3)->type('numeric')->value(0);
$width = $image->getWidth();
$height = $image->getHeight();
$checkTransparency = false;
// define borders to trim away
if (is_null($away)) {
$away = array('top', 'right', 'bottom', 'left');
} elseif (is_string($away)) {
$away = array($away);
}
// lower border names
foreach ($away as $key => $value) {
$away[$key] = strtolower($value);
}
// define base color position
switch (strtolower($base)) {
case 'transparent':
case 'trans':
$checkTransparency = true;
$base_x = 0;
$base_y = 0;
break;
case 'bottom-right':
case 'right-bottom':
$base_x = $width - 1;
$base_y = $height - 1;
break;
default:
case 'top-left':
case 'left-top':
$base_x = 0;
$base_y = 0;
break;
}
// pick base color
if ($checkTransparency) {
$base_color = new Color();
// color will only be used to compare alpha channel
} else {
$base_color = $image->pickColor($base_x, $base_y, 'object');
}
// trim on clone to get only coordinates
$trimed = clone $image->getCore();
// add border to trim specific color
$trimed->borderImage($base_color->getPixel(), 1, 1);
// trim image
$trimed->trimImage(65850 / 100 * $tolerance);
// get coordinates of trim
$imagePage = $trimed->getImagePage();
list($crop_x, $crop_y) = array($imagePage['x'] - 1, $imagePage['y'] - 1);
// $trimed->setImagePage(0, 0, 0, 0);
list($crop_width, $crop_height) = array($trimed->width, $trimed->height);
// adjust settings if right should not be trimed
if (!in_array('right', $away)) {
$crop_width = $crop_width + ($width - ($width - $crop_x));
}
// adjust settings if bottom should not be trimed
if (!in_array('bottom', $away)) {
$crop_height = $crop_height + ($height - ($height - $crop_y));
}
// adjust settings if left should not be trimed
if (!in_array('left', $away)) {
$crop_width = $crop_width + $crop_x;
$crop_x = 0;
}
// adjust settings if top should not be trimed
if (!in_array('top', $away)) {
$crop_height = $crop_height + $crop_y;
$crop_y = 0;
}
// add feather
$crop_width = min($width, $crop_width + $feather * 2);
$crop_height = min($height, $crop_height + $feather * 2);
$crop_x = max(0, $crop_x - $feather);
$crop_y = max(0, $crop_y - $feather);
// finally crop based on page
$image->getCore()->cropImage($crop_width, $crop_height, $crop_x, $crop_y);
$image->getCore()->setImagePage(0, 0, 0, 0);
$trimed->destroy();
return true;
}
public function testInsertPng8WithAlphaChannel()
{
$img = new Image(null, 16, 16, '#ff0000');
$img->insert('public/png8.png');
$this->assertEquals('#ff0000', $img->pickColor(0, 0, 'hex'));
$this->assertEquals('#8c8c8c', $img->pickColor(10, 10, 'hex'));
}
public function testBackup()
{
$img = new Image(null, 800, 600, '#0000ff');
$img->fill('#00ff00');
$img->backup();
$img->resize(200, 200);
$img->reset();
$this->assertInternalType('int', $img->width);
$this->assertInternalType('int', $img->height);
$this->assertEquals($img->width, 800);
$this->assertEquals($img->height, 600);
$this->assertEquals('#00ff00', $img->pickColor(0, 0, 'hex'));
$img = new Image('public/tile.png');
$img->resize(10, 10);
$img->fill('#00ff00');
$img->backup();
$img->resize(5, 5);
$img->reset();
$this->assertInternalType('int', $img->width);
$this->assertInternalType('int', $img->height);
$this->assertEquals($img->width, 10);
$this->assertEquals($img->height, 10);
$this->assertEquals('#00ff00', $img->pickColor(0, 0, 'hex'));
}
