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<?php
/**
* JoinDraw.php
*--------------------------------------------------------------------
*
* Enable to join 2 BCGDrawing or 2 image object to make only one image.
* There are some options for alignement.
*
*--------------------------------------------------------------------
* Revision History
* v2.0.1 09 mar 2009 Jean-Sébastien Goupil Update for BCG classes
* v1.2.3b 31 dec 2005 Jean-Sébastien Goupil
*--------------------------------------------------------------------
* $Id: JoinDraw.php,v 1.3 2009/03/08 23:12:27 jsgoupil Exp $
*--------------------------------------------------------------------
* Copyright (C) Jean-Sebastien Goupil
* http://www.barcodephp.com
*/
class JoinDraw {
const ALIGN_RIGHT = 0;
const ALIGN_BOTTOM = 0;
const ALIGN_LEFT = 1;
const ALIGN_TOP = 1;
const ALIGN_CENTER = 2;
const POSITION_RIGHT = 0;
const POSITION_BOTTOM = 1;
const POSITION_LEFT = 2;
const POSITION_TOP = 3;
private $image1;
private $image2;
private $alignement;
private $position;
private $space;
private $im;
/**
* Construct the JoinDrawing Object.
* - $image1 and $image2 have to be BCGDrawing object or image object.
* - $space is the space between the two graphics in pixel.
* - $position is the position of the $image2 depending the $image1.
* - $alignment is the alignment of the $image2 if this one is smaller than $image1;
* if $image2 is bigger than $image1, the $image1 will be positionned on the opposite side specified.
*
* @param mixed $image1
* @param mixed $image2
* @param BCGColor $background
* @param int space
* @param int $position
* @param int $alignment
*/
public function __construct($image1, $image2, $background, $space = 10, $position = self::POSITION_RIGHT, $alignment = self::ALIGN_TOP) {
if ($image1 instanceof BCGDrawing) {
$this->image1 = $image1->get_im();
} else {
$this->image1 = $image1;
}
if ($image2 instanceof BCGDrawing) {
$this->image2 = $image2->get_im();
} else {
$this->image2 = $image2;
}
$this->background = $background;
$this->space = (int)$space;
$this->position = (int)$position;
$this->alignment = (int)$alignment;
$this->createIm();
}
public function __destruct() {
imagedestroy($this->im);
}
private function findPosition($size1, $size2, $alignment) {
$rsize1 = max($size1, $size2);
$rsize2 = min($size1, $size2);
if ($alignment === self::ALIGN_LEFT) { // Or TOP
return 0;
} elseif ($alignment === self::ALIGN_CENTER) {
return $rsize1 / 2 - $rsize2 / 2;
} else { // RIGHT or TOP
return $rsize1 - $rsize2;
}
}
private function changeAlignment($alignment) {
if ($alignment === 0) {
return 1;
} elseif ($alignment === 1) {
return 0;
} else {
return 2;
}
}
private function createIm() {
$w1 = imagesx($this->image1);
$w2 = imagesx($this->image2);
$h1 = imagesy($this->image1);
$h2 = imagesy($this->image2);
if ($this->position === self::POSITION_LEFT || $this->position === self::POSITION_RIGHT) {
$w = $w1 + $w2 + $this->space;
$h = max($h1, $h2);
} else {
$w = max($w1, $w2);
$h = $h1 + $h2 + $this->space;
}
$this->im = imagecreatetruecolor($w, $h);
imagefill($this->im, 0, 0, $this->background->allocate($this->im));
// We start defining position of images
if ($this->position === self::POSITION_TOP) {
if ($w1 > $w2) {
$posX1 = 0;
$posX2 = $this->findPosition($w1, $w2, $this->alignment);
} else {
$a = $this->changeAlignment($this->alignment);
$posX1 = $this->findPosition($w1, $w2, $a);
$posX2 = 0;
}
$posY2 = 0;
$posY1 = $h2 + $this->space;
} elseif ($this->position === self::POSITION_LEFT) {
if ($w1 > $w2) {
$posY1 = 0;
$posY2 = $this->findPosition($h1, $h2, $this->alignment);
} else {
$a = $this->changeAlignment($this->alignment);
$posY2 = 0;
$posY1 = $this->findPosition($h1, $h2, $a);
}
$posX2 = 0;
$posX1 = $w2 + $this->space;
} elseif ($this->position === self::POSITION_BOTTOM) {
if ($w1 > $w2) {
$posX2 = $this->findPosition($w1, $w2, $this->alignment);
$posX1 = 0;
} else {
$a = $this->changeAlignment($this->alignment);
$posX2 = 0;
$posX1 = $this->findPosition($w1, $w2, $a);
}
$posY1 = 0;
$posY2 = $h1 + $this->space;
} else { // defaults to RIGHT
if ($w1 > $w2) {
$posY2 = $this->findPosition($h1, $h2, $this->alignment);
$posY1 = 0;
} else {
$a = $this->changeAlignment($this->alignment);
$posY2 = 0;
$posY1 = $this->findPosition($h1, $h2, $a);
}
$posX1 = 0;
$posX2 = $w1 + $this->space;
}
imagecopy($this->im, $this->image1, $posX1, $posY1, 0, 0, $w1, $h1);
imagecopy($this->im, $this->image2, $posX2, $posY2, 0, 0, $w2, $h2);
}
/**
* Returns the new $im created.
*
* @return resource
*/
public function get_im() {
return $this->im;
}
}
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