/**
* Applies a mask on the copy of source image
*
* @param WideImage_Image $image
* @param WideImage_Image $mask
* @param smart_coordinate $left
* @param smart_coordinate $top
* @return WideImage_Image
*/
function execute($image, $mask, $left = 0, $top = 0)
{
$left = WideImage_Coordinate::fix($left, $image->getWidth(), $mask->getWidth());
$top = WideImage_Coordinate::fix($top, $image->getHeight(), $mask->getHeight());
$width = $image->getWidth();
$mask_width = $mask->getWidth();
$height = $image->getHeight();
$mask_height = $mask->getHeight();
$result = $image->asTrueColor();
$result->alphaBlending(false);
$result->saveAlpha(true);
$srcTransparentColor = $result->getTransparentColor();
if ($srcTransparentColor >= 0) {
# this was here. works without.
#$trgb = $image->getColorRGB($srcTransparentColor);
#$trgb['alpha'] = 127;
#$destTransparentColor = $result->allocateColorAlpha($trgb);
#$result->setTransparentColor($destTransparentColor);
$destTransparentColor = $srcTransparentColor;
} else {
$destTransparentColor = $result->allocateColorAlpha(255, 255, 255, 127);
}
for ($x = 0; $x < $width; $x++) {
for ($y = 0; $y < $height; $y++) {
$mx = $x - $left;
$my = $y - $top;
if ($mx >= 0 && $mx < $mask_width && $my >= 0 && $my < $mask_height) {
$srcColor = $image->getColorAt($x, $y);
if ($srcColor == $srcTransparentColor) {
$destColor = $destTransparentColor;
} else {
$maskRGB = $mask->getRGBAt($mx, $my);
if ($maskRGB['red'] == 0) {
$destColor = $destTransparentColor;
} elseif ($srcColor >= 0) {
$imageRGB = $image->getRGBAt($x, $y);
$level = $maskRGB['red'] / 255 * (1 - $imageRGB['alpha'] / 127);
$imageRGB['alpha'] = 127 - round($level * 127);
if ($imageRGB['alpha'] == 127) {
$destColor = $destTransparentColor;
} else {
$destColor = $result->allocateColorAlpha($imageRGB);
}
} else {
$destColor = $destTransparentColor;
}
}
$result->setColorAt($x, $y, $destColor);
}
}
}
return $result;
}
/**
* Writes text onto an image
*
* @param WideImage_Image $image
* @param mixed $x smart coordinate
* @param mixed $y smart coordinate
* @param string $text
* @param int $angle Angle in degrees clockwise
*/
function writeText($image, $x, $y, $text, $angle = 0)
{
if ($image->isTrueColor()) {
$image->alphaBlending(true);
}
$box = imageftbbox($this->size, $angle, $this->face, $text);
$obox = array('left' => min($box[0], $box[2], $box[4], $box[6]), 'top' => min($box[1], $box[3], $box[5], $box[7]), 'right' => max($box[0], $box[2], $box[4], $box[6]) - 1, 'bottom' => max($box[1], $box[3], $box[5], $box[7]) - 1);
$obox['width'] = abs($obox['left']) + abs($obox['right']);
$obox['height'] = abs($obox['top']) + abs($obox['bottom']);
$x = WideImage_Coordinate::fix($x, $image->getWidth(), $obox['width']);
$y = WideImage_Coordinate::fix($y, $image->getHeight(), $obox['height']);
$fixed_x = $x - $obox['left'];
$fixed_y = $y - $obox['top'];
imagettftext($image->getHandle(), $this->size, $angle, $fixed_x, $fixed_y, $this->color, $this->face, $text);
}
/**
* Returns an image with a resized canvas
*
* The image is filled with $color. Use $scale to determine, when to resize.
*
* @param WideImage_Image $img
* @param smart_coordinate $width
* @param smart_coordinate $height
* @param smart_coordinate $left
* @param smart_coordinate $top
* @param int $color
* @param string $scale 'up', 'down', 'any'
* @param boolean $merge
* @return WideImage_Image
*/
function execute($img, $width, $height, $left, $top, $color, $scale, $merge)
{
$new_width = WideImage_Coordinate::fix($width, $img->getWidth());
$new_height = WideImage_Coordinate::fix($height, $img->getHeight());
if ($scale == 'down') {
$new_width = min($new_width, $img->getWidth());
$new_height = min($new_height, $img->getHeight());
} elseif ($scale == 'up') {
$new_width = max($new_width, $img->getWidth());
$new_height = max($new_height, $img->getHeight());
}
$new = WideImage::createTrueColorImage($new_width, $new_height);
if ($img->isTrueColor()) {
if ($color === null) {
$color = $new->allocateColorAlpha(0, 0, 0, 127);
}
} else {
imagepalettecopy($new->getHandle(), $img->getHandle());
if ($img->isTransparent()) {
$new->copyTransparencyFrom($img);
$tc_rgb = $img->getTransparentColorRGB();
$t_color = $new->allocateColorAlpha($tc_rgb);
}
if ($color === null) {
if ($img->isTransparent()) {
$color = $t_color;
} else {
$color = $new->allocateColorAlpha(255, 0, 127, 127);
}
imagecolortransparent($new->getHandle(), $color);
}
}
$new->fill(0, 0, $color);
$x = WideImage_Coordinate::fix($left, $new->getWidth(), $img->getWidth());
$y = WideImage_Coordinate::fix($top, $new->getHeight(), $img->getHeight());
// blending for truecolor images
if ($img->isTrueColor()) {
$new->alphaBlending($merge);
}
// not-blending for palette images
if (!$merge && !$img->isTrueColor() && isset($t_color)) {
$new->getCanvas()->filledRectangle($x, $y, $x + $img->getWidth(), $y + $img->getHeight(), $t_color);
}
$img->copyTo($new, $x, $y);
return $new;
}
/**
* Prepares and corrects smart coordinates
*
* @param WideImage_Image $img
* @param smart_coordinate $width
* @param smart_coordinate $height
* @param string $fit
* @return array
*/
protected function prepareDimensions($img, $width, $height, $fit)
{
if ($width === null && $height === null) {
$width = $img->getWidth();
$height = $img->getHeight();
}
if ($width !== null) {
$width = WideImage_Coordinate::fix($width, $img->getWidth());
}
if ($height !== null) {
$height = WideImage_Coordinate::fix($height, $img->getHeight());
}
if ($width === null) {
$width = floor($img->getWidth() * $height / $img->getHeight());
}
if ($height === null) {
$height = floor($img->getHeight() * $width / $img->getWidth());
}
if ($width === 0 || $height === 0) {
return array('width' => 0, 'height' => 0);
}
if ($fit == null) {
$fit = 'inside';
}
$dim = array();
if ($fit == 'fill') {
$dim['width'] = $width;
$dim['height'] = $height;
} elseif ($fit == 'inside' || $fit == 'outside') {
$rx = $img->getWidth() / $width;
$ry = $img->getHeight() / $height;
if ($fit == 'inside') {
$ratio = $rx > $ry ? $rx : $ry;
} else {
$ratio = $rx < $ry ? $rx : $ry;
}
$dim['width'] = round($img->getWidth() / $ratio);
$dim['height'] = round($img->getHeight() / $ratio);
} else {
throw new WideImage_Operation_InvalidFitMethodException("{$fit} is not a valid resize-fit method.");
}
return $dim;
}
/**
* Returns a merged image
*
* @param WideImage_Image $base
* @param WideImage_Image $overlay
* @param smart_coordinate $left
* @param smart_coordinate $top
* @param numeric $pct
* @return WideImage_Image
*/
function execute($base, $overlay, $left, $top, $pct)
{
$x = WideImage_Coordinate::fix($left, $base->getWidth(), $overlay->getWidth());
$y = WideImage_Coordinate::fix($top, $base->getHeight(), $overlay->getHeight());
$result = $base->asTrueColor();
$result->alphaBlending(true);
$result->saveAlpha(true);
if ($pct <= 0) {
return $result;
}
if ($pct < 100) {
if (!imagecopymerge($result->getHandle(), $overlay->getHandle(), $x, $y, 0, 0, $overlay->getWidth(), $overlay->getHeight(), $pct)) {
throw new WideImage_GDFunctionResultException("imagecopymerge() returned false");
}
} else {
if (!imagecopy($result->getHandle(), $overlay->getHandle(), $x, $y, 0, 0, $overlay->getWidth(), $overlay->getHeight())) {
throw new WideImage_GDFunctionResultException("imagecopy() returned false");
}
}
return $result;
}
/**
* Returns a cropped image
*
* @param WideImage_Image $img
* @param smart_coordinate $left
* @param smart_coordinate $top
* @param smart_coordinate $width
* @param smart_coordinate $height
* @return WideImage_Image
*/
function execute($img, $left, $top, $width, $height)
{
$width = WideImage_Coordinate::fix($width, $img->getWidth(), $width);
$height = WideImage_Coordinate::fix($height, $img->getHeight(), $height);
$left = WideImage_Coordinate::fix($left, $img->getWidth(), $width);
$top = WideImage_Coordinate::fix($top, $img->getHeight(), $height);
if ($left < 0) {
$width = $left + $width;
$left = 0;
}
if ($width > $img->getWidth() - $left) {
$width = $img->getWidth() - $left;
}
if ($top < 0) {
$height = $top + $height;
$top = 0;
}
if ($height > $img->getHeight() - $top) {
$height = $img->getHeight() - $top;
}
if ($width <= 0 || $height <= 0) {
throw new WideImage_Exception("Can't crop outside of an image.");
}
$new = $img->doCreate($width, $height);
if ($img->isTransparent() || $img instanceof WideImage_PaletteImage) {
$new->copyTransparencyFrom($img);
if (!imagecopyresized($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height)) {
throw new WideImage_GDFunctionResultException("imagecopyresized() returned false");
}
} else {
$new->alphaBlending(false);
$new->saveAlpha(true);
if (!imagecopyresampled($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height)) {
throw new WideImage_GDFunctionResultException("imagecopyresampled() returned false");
}
}
return $new;
}
