refactoring to draw elements

library/ZendPdf/Drawings/DrawingAbstract.php

@@ -0,0 +1,106 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ * @package   Zend_Pdf
+ */
+
+namespace ZendPdf\Drawings;
+
+use ZendPdf\Page;
+use ZendPdf\Style;
+
+/**
+ * Drawing Abstract
+ *
+ * @package    ZendPdf
+ * @subpackage ZendPdf\Drawings
+ */
+abstract class DrawingAbstract implements DrawingInterface
+{
+    /**
+     * @var float
+     */
+    protected $xPosition;
+    /**
+     * @var float
+     */
+    protected $yPosition;
+    /**
+     * @var Style
+     */
+    protected $style;
+
+    /**
+     * @inheritdoc
+     */
+    public function setPosition($x, $y)
+    {
+        $this->setX($x);
+        $this->setY($y);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function setX($position)
+    {
+        $this->xPosition = (float)$position;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function setY($position)
+    {
+        $this->yPosition = (float)$position;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function setStyle(Style $style)
+    {
+        $this->style = $style;
+        return $this;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    final public function draw(Page $page)
+    {
+        $content = $this->drawStyle($page);
+        $content .= $this->drawElement($page);
+        return $content;
+    }
+
+    /**
+     * Draw element with Pdf elements.
+     * @param Page $page
+     * @return string
+     * @throws \ZendPdf\Exception\ExceptionInterface
+     */
+    abstract protected function drawElement(Page $page);
+
+    /**
+     * Draw style with Pdf elements.
+     * @param Page $page
+     * @return string
+     */
+    protected function drawStyle(Page $page)
+    {
+        if ($this->style == null) {
+            return '';
+        }
+        $page->addProcedureSet('Text');
+        $page->addProcedureSet('PDF');
+        if ($this->style->getFont() !== null) {
+            $page->setFont($this->style->getFont(), $this->style->getFontSize());
+        }
+        return $this->style->instructions();
+    }
+}

library/ZendPdf/Drawings/DrawingInterface.php

@@ -0,0 +1,37 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ * @package   Zend_Pdf
+ */
+
+namespace ZendPdf\Drawings;
+
+use ZendPdf\Page;
+use ZendPdf\Style;
+
+/**
+ * Drawing Interface
+ *
+ * @package    ZendPdf
+ * @subpackage ZendPdf\Drawings
+ */
+interface DrawingInterface extends PositionInterface
+{
+    /**
+     * Set the style to use for current drawing operation
+     * @param Style $style
+     * @return void
+     */
+    public function setStyle(Style $style);
+
+    /**
+     * Translate drawing into Pdf elements.
+     * @param Page $page
+     * @return string
+     */
+    public function draw(Page $page);
+}

library/ZendPdf/Drawings/Ellipse.php

@@ -0,0 +1,179 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ * @package   Zend_Pdf
+ */
+
+namespace ZendPdf\Drawings;
+
+use ZendPdf\InternalType\NumericObject;
+use ZendPdf\Page;
+
+/**
+ * Draw an ellipse at the specified position.
+ *
+ * @package    ZendPdf
+ * @subpackage ZendPdf\Drawings
+ */
+class Ellipse extends ShapeAbstract
+{
+    /**
+     * @var float
+     */
+    protected $startAngle;
+    /**
+     * @var float
+     */
+    protected $endAngle;
+
+    public function __construct($width, $height, $startAngle = null, $endAngle = null, $fillType = self::DRAW_FILL_AND_STROKE)
+    {
+        $this->width = (float)$width;
+        $this->height = (float)$height;
+        $this->fillType = $fillType;
+        $this->startAngle = (float)$startAngle;
+        $this->endAngle = (float)$endAngle;
+    }
+
+    protected function drawElement(Page $page)
+    {
+        $startAngle = $this->startAngle;
+        $endAngle = $this->endAngle;
+        $xCoordinate = $this->xPosition;
+        $yCoordinate = $this->yPosition;
+        $width = $this->width;
+        $height = $this->height;
+
+        $page->addProcedureSet('PDF');
+
+        if ($width < $xCoordinate) {
+            $temp = $xCoordinate;
+            $xCoordinate = $width;
+            $width = $temp;
+        }
+        if ($height < $yCoordinate) {
+            $temp = $yCoordinate;
+            $yCoordinate = $height;
+            $height = $temp;
+        }
+
+        $x = ($xCoordinate + $width) / 2.;
+        $y = ($yCoordinate + $height) / 2.;
+
+        $content = '';
+
+        if ($startAngle !== .0) {
+            $content .= $this->drawClipSector(
+                $x,
+                $y,
+                $width,
+                $height,
+                $xCoordinate,
+                $yCoordinate,
+                $startAngle,
+                $endAngle
+            );
+        }
+
+        $content .= $this->drawEllipse($x, $y, $width, $height, $xCoordinate, $yCoordinate);
+        $content .= $this->drawFillType($this->fillType);
+        $content .= $this->drawCloseEllipse();
+
+        return $content;
+    }
+
+    /**
+     * Get close clip if have start angle.
+     * @return string
+     */
+    private function drawCloseEllipse()
+    {
+        if ($this->startAngle !== .0) {
+            return 'Q' . PHP_EOL;
+        }
+        return '';
+    }
+
+    /**
+     * @param float $x
+     * @param float $y
+     * @param float $width
+     * @param float $height
+     * @param float $xCoordinate
+     * @param float $yCoordinate
+     * @param float $startAngle
+     * @param float $endAngle
+     * @return string
+     */
+    private function drawClipSector($x, $y, $width, $height, $xCoordinate, $yCoordinate, $startAngle, $endAngle)
+    {
+        $xC = new NumericObject($x);
+        $yC = new NumericObject($y);
+
+        $startAngle = fmod($startAngle, M_PI * 2);
+        $endAngle = fmod($endAngle, M_PI * 2);
+
+        if ($startAngle > $endAngle) {
+            $endAngle += M_PI * 2;
+        }
+
+        $clipPath = $xC->toString() . ' ' . $yC->toString() . " m\n";
+        $clipSectors = (int)ceil(($endAngle - $startAngle) / M_PI_4);
+        $clipRadius = max($width - $xCoordinate, $height - $yCoordinate);
+
+        for ($count = 0; $count <= $clipSectors; $count++) {
+            $pAngle = $startAngle + ($endAngle - $startAngle) * $count / (float)$clipSectors;
+
+            $pX = new NumericObject($x + cos($pAngle) * $clipRadius);
+            $pY = new NumericObject($y + sin($pAngle) * $clipRadius);
+            $clipPath .= $pX->toString() . ' ' . $pY->toString() . " l\n";
+        }
+
+        return "q\n" . $clipPath . "h\nW\nn\n";
+    }
+
+    /**
+     * @param float $x
+     * @param float $y
+     * @param float $width
+     * @param float $height
+     * @param float $xCoordinate
+     * @param float $yCoordinate
+     * @return string
+     */
+    private function drawEllipse($x, $y, $width, $height, $xCoordinate, $yCoordinate)
+    {
+        $xC = new NumericObject($x);
+        $yC = new NumericObject($y);
+
+        $xLeft = new NumericObject($xCoordinate);
+        $xRight = new NumericObject($width);
+        $yUp = new NumericObject($height);
+        $yDown = new NumericObject($yCoordinate);
+
+        $xDelta = 2 * (M_SQRT2 - 1) * ($width - $xCoordinate) / 3.;
+        $yDelta = 2 * (M_SQRT2 - 1) * ($height - $yCoordinate) / 3.;
+        $xr = new NumericObject($x + $xDelta);
+        $xl = new NumericObject($x - $xDelta);
+        $yu = new NumericObject($y + $yDelta);
+        $yd = new NumericObject($y - $yDelta);
+
+        return $xC->toString() . ' ' . $yUp->toString() . " m\n"
+        . $xr->toString() . ' ' . $yUp->toString() . ' '
+        . $xRight->toString() . ' ' . $yu->toString() . ' '
+        . $xRight->toString() . ' ' . $yC->toString() . " c\n"
+        . $xRight->toString() . ' ' . $yd->toString() . ' '
+        . $xr->toString() . ' ' . $yDown->toString() . ' '
+        . $xC->toString() . ' ' . $yDown->toString() . " c\n"
+        . $xl->toString() . ' ' . $yDown->toString() . ' '
+        . $xLeft->toString() . ' ' . $yd->toString() . ' '
+        . $xLeft->toString() . ' ' . $yC->toString() . " c\n"
+        . $xLeft->toString() . ' ' . $yu->toString() . ' '
+        . $xl->toString() . ' ' . $yUp->toString() . ' '
+        . $xC->toString() . ' ' . $yUp->toString() . " c\n";
+    }
+}

library/ZendPdf/Drawings/Image.php

@@ -0,0 +1,58 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ * @package   Zend_Pdf
+ */
+
+namespace ZendPdf\Drawings;
+
+use ZendPdf\InternalType\NameObject;
+use ZendPdf\InternalType\NumericObject;
+use ZendPdf\Page;
+use ZendPdf\Resource\Image\AbstractImage;
+
+/**
+ * Draw an image at the specified position.
+ *
+ * @package    ZendPdf
+ * @subpackage ZendPdf\Drawings
+ */
+class Image extends DrawingAbstract
+{
+    protected $image;
+    protected $width;
+    protected $height;
+
+    public function __construct(AbstractImage $image, $width, $height)
+    {
+        $this->image = $image;
+        $this->width = (float)$width;
+        $this->height = (float)$height;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function drawElement(Page $page)
+    {
+        $page->addProcedureSet('PDF');
+
+        $imageName = $page->attachResource('XObject', $this->image);
+        $imageNameObj = new NameObject($imageName);
+
+        $x1Obj = new NumericObject($this->xPosition);
+        $y1Obj = new NumericObject($this->yPosition);
+        $widthObj = new NumericObject($this->width - $this->xPosition);
+        $heightObj = new NumericObject($this->height - $this->yPosition);
+
+        return "q\n"
+        . '1 0 0 1 ' . $x1Obj->toString() . ' ' . $y1Obj->toString() . " cm\n"
+        . $widthObj->toString() . ' 0 0 ' . $heightObj->toString() . " 0 0 cm\n"
+        . $imageNameObj->toString() . " Do\n"
+        . "Q\n";
+    }
+}