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function resize, crop

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Доработана функция resize
Оптимизирован код функции crop
This commit is contained in:
Евгений
2013-11-28 13:57:19 +06:00
parent 9f8d7f5198
commit 950b816ca6
1 changed files with 31 additions and 41 deletions
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72
libraries/Gelato/Image/Image.php
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@@ -176,6 +176,7 @@ class Image
$width = (int) $width;
$height = ($height === null) ? null : (int) $height;
$aspect_ratio = ($aspect_ratio === null) ? null : (int) $aspect_ratio;
$xpos = $ypos = 0;
// Resizes the image to {$width}% of the original size
if ($height === null) {
@@ -186,13 +187,18 @@ class Image
} else {
// Resizes the image to the smalles possible dimension while maintaining aspect ratio
if ($aspect_ratio === Image::AUTO) {
if ($aspect_ratio === Image::AUTO || $aspect_ratio === null) {
// Calculate smallest size based on given height and width while maintaining aspect ratio
$percentage = min(($width / $this->width), ($height / $this->height));
$new_width = round($this->width * $percentage);
$new_height = round($this->height * $percentage);
if ($aspect_ratio === null) {
$xpos = (int)(($width - $new_width) / 2);
$ypos = (int)(($height - $new_height) / 2);
}
// Resizes the image using the width to maintain aspect ratio
} elseif ($aspect_ratio === Image::WIDTH) {
@@ -216,31 +222,27 @@ class Image
}
}
// Create a new true color image width new width and height
$resized = imagecreatetruecolor($new_width, $new_height);
$transPng = imagecolorallocatealpha($resized, 0, 0, 0, 127);
imagefill($resized, 0, 0, $transPng);
$old_image = $this->image;
if ($aspect_ratio === null) {
$this->image = imagecreatetruecolor($width, $height);
} else {
$this->image = imagecreatetruecolor($new_width, $new_height);
}
if ($this->type === IMAGETYPE_PNG) {
$bgcolor = imagecolorallocatealpha($this->image, 0, 0, 0, 127);
} else {
$bgcolor = imagecolorallocate($this->image, 255, 255, 255);
}
imagefill($this->image, 0, 0, $bgcolor);
// Copy and resize part of an image with resampling
imagecopyresampled($resized, $this->image, 0, 0, 0, 0, $new_width, $new_height, $this->width, $this->height);
imagecopyresampled($this->image, $old_image, $xpos, $ypos, 0, 0, $new_width, $new_height, $this->width, $this->height);
// Destroy an image
imagedestroy($this->image);
// Create a new true color image width new width and height
$this->image = imagecreatetruecolor($new_width, $new_height);
$transPng = imagecolorallocatealpha($this->image, 0, 0, 0, 127);
imagefill($this->image, 0, 0, $transPng);
// Copy and resize part of an image with resampling
imagecopyresampled($this->image, $resized, 0, 0, 0, 0, $new_width, $new_height, $new_width, $new_height);
// Destroy an image
imagedestroy($resized);
// Save new width and height
$this->width = $new_width;
$this->height = $new_height;
imagedestroy($old_image);
return $this;
}
@@ -271,31 +273,19 @@ class Image
if ($y + $height > $this->height) $height = $this->height - $y;
if ($width <= 0 || $height <= 0) return false;
// Create a new true color image
$crop = imagecreatetruecolor($width, $height);
$transPng = imagecolorallocatealpha($crop, 0, 0, 0, 127);
imagefill($crop, 0, 0, $transPng);
// Copy and resize part of an image with resampling
imagecopyresampled($crop, $this->image, 0, 0, $x, $y, $this->width, $this->height, $this->width, $this->height);
// Destroy an image
imagedestroy($this->image);
$old_image = $this->image;
// Create a new true color image
$this->image = imagecreatetruecolor($width, $height);
$transPng = imagecolorallocatealpha($this->image, 0, 0, 0, 127);
imagefill($this->image, 0, 0, $transPng);
$transparent = imagecolorallocatealpha($this->image, 0, 0, 0, 127);
imagefill($this->image, 0, 0, $transparent);
// Copy and resize part of an image with resampling
imagecopyresampled($this->image, $crop, 0, 0, 0, 0, $width, $height, $width, $height);
imagecopyresampled($this->image, $old_image, 0, 0, 0, 0, $width, $height, $width, $height);
// Destroy an image
imagedestroy($crop);
// Save new width and height
$this->width = $width;
$this->height = $height;
imagedestroy($old_image);
return $this;
}