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<?php

//

//  FPDF_TPL - Version 1.2.3

//

//    Copyright 2004-2013 Setasign - Jan Slabon

//

//  Licensed under the Apache License, Version 2.0 (the "License");

//  you may not use this file except in compliance with the License.

//  You may obtain a copy of the License at

//

//      http://www.apache.org/licenses/LICENSE-2.0

//

//  Unless required by applicable law or agreed to in writing, software

//  distributed under the License is distributed on an "AS IS" BASIS,

//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

//  See the License for the specific language governing permissions and

//  limitations under the License.

//

class FPDF_TPL extends FPDF {

    /**

     * Array of Tpl-Data

     * @var array

     */

    var $tpls = array();

    /**

     * Current Template-ID

     * @var int

     */

    var $tpl = 0;

    /**

     * "In Template"-Flag

     * @var boolean

     */

    var $_intpl = false;

    /**

     * Nameprefix of Templates used in Resources-Dictonary

     * @var string A String defining the Prefix used as Template-Object-Names. Have to beginn with an /

     */

    var $tplprefix = "/TPL";

    /**

     * Resources used By Templates and Pages

     * @var array

     */

    var $_res = array();

    /**

     * Last used Template data

     *

     * @var array

     */

    var $lastUsedTemplateData = array();

    /**

     * Start a Template

     *

     * This method starts a template. You can give own coordinates to build an own sized

     * Template. Pay attention, that the margins are adapted to the new templatesize.

     * If you want to write outside the template, for example to build a clipped Template,

     * you have to set the Margins and "Cursor"-Position manual after beginTemplate-Call.

     *

     * If no parameter is given, the template uses the current page-size.

     * The Method returns an ID of the current Template. This ID is used later for using this template.

     * Warning: A created Template is used in PDF at all events. Still if you don't use it after creation!

     *

     * @param int $x The x-coordinate given in user-unit

     * @param int $y The y-coordinate given in user-unit

     * @param int $w The width given in user-unit

     * @param int $h The height given in user-unit

     * @return int The ID of new created Template

     */

    function beginTemplate($x = null, $y = null, $w = null, $h = null) {

            if (is_subclass_of($this, 'TCPDF')) {

                    $this->Error('This method is only usable with FPDF. Use TCPDF methods startTemplate() instead.');

                    return;

            }

        if ($this->page <= 0)

            $this->error("You have to add a page to fpdf first!");

        if ($x == null)

            $x = 0;

        if ($y == null)

            $y = 0;

        if ($w == null)

            $w = $this->w;

        if ($h == null)

            $h = $this->h;

        // Save settings

        $this->tpl++;

        $tpl =& $this->tpls[$this->tpl];

        $tpl = array(

            'o_x' => $this->x,

            'o_y' => $this->y,

            'o_AutoPageBreak' => $this->AutoPageBreak,

            'o_bMargin' => $this->bMargin,

            'o_tMargin' => $this->tMargin,

            'o_lMargin' => $this->lMargin,

            'o_rMargin' => $this->rMargin,

            'o_h' => $this->h,

            'o_w' => $this->w,

            'o_FontFamily' => $this->FontFamily,

            'o_FontStyle' => $this->FontStyle,

            'o_FontSizePt' => $this->FontSizePt,

            'o_FontSize' => $this->FontSize,

            'buffer' => '',

            'x' => $x,

            'y' => $y,

            'w' => $w,

            'h' => $h

        );

        $this->SetAutoPageBreak(false);

        // Define own high and width to calculate possitions correct

        $this->h = $h;

        $this->w = $w;

        $this->_intpl = true;

        $this->SetXY($x + $this->lMargin, $y + $this->tMargin);

        $this->SetRightMargin($this->w - $w + $this->rMargin);

        if ($this->CurrentFont) {

            $fontkey = $this->FontFamily . $this->FontStyle;

                    $this->_res['tpl'][$this->tpl]['fonts'][$fontkey] =& $this->fonts[$fontkey];

                $this->_out(sprintf('BT /F%d %.2f Tf ET', $this->CurrentFont['i'], $this->FontSizePt));

        }

        return $this->tpl;

    }

    /**

     * End Template

     *

     * This method ends a template and reset initiated variables on beginTemplate.

     *

     * @return mixed If a template is opened, the ID is returned. If not a false is returned.

     */

    function endTemplate() {

            if (is_subclass_of($this, 'TCPDF')) {

                $args = func_get_args();

                return call_user_func_array(array($this, 'TCPDF::endTemplate'), $args);

        }

        if ($this->_intpl) {

            $this->_intpl = false; 

            $tpl =& $this->tpls[$this->tpl];

            $this->SetXY($tpl['o_x'], $tpl['o_y']);

            $this->tMargin = $tpl['o_tMargin'];

            $this->lMargin = $tpl['o_lMargin'];

            $this->rMargin = $tpl['o_rMargin'];

            $this->h = $tpl['o_h'];

            $this->w = $tpl['o_w'];

            $this->SetAutoPageBreak($tpl['o_AutoPageBreak'], $tpl['o_bMargin']);

            $this->FontFamily = $tpl['o_FontFamily'];

                        $this->FontStyle = $tpl['o_FontStyle'];

                        $this->FontSizePt = $tpl['o_FontSizePt'];

                        $this->FontSize = $tpl['o_FontSize'];

                        $fontkey = $this->FontFamily . $this->FontStyle;

                        if ($fontkey)

                    $this->CurrentFont =& $this->fonts[$fontkey];

            return $this->tpl;

        } else {

            return false;

        }

    }

    /**

     * Use a Template in current Page or other Template

     *

     * You can use a template in a page or in another template.

     * You can give the used template a new size like you use the Image()-method.

     * All parameters are optional. The width or height is calculated automaticaly

     * if one is given. If no parameter is given the origin size as defined in

     * beginTemplate() is used.

     * The calculated or used width and height are returned as an array.

     *

     * @param int $tplidx A valid template-Id

     * @param int $_x The x-position

     * @param int $_y The y-position

     * @param int $_w The new width of the template

     * @param int $_h The new height of the template

     * @retrun array The height and width of the template

     */

    function useTemplate($tplidx, $_x = null, $_y = null, $_w = 0, $_h = 0) {

        if ($this->page <= 0)

                $this->error('You have to add a page first!');

        if (!isset($this->tpls[$tplidx]))

            $this->error('Template does not exist!');

        if ($this->_intpl) {

            $this->_res['tpl'][$this->tpl]['tpls'][$tplidx] =& $this->tpls[$tplidx];

        }

        $tpl =& $this->tpls[$tplidx];

        $w = $tpl['w'];

        $h = $tpl['h'];

        if ($_x == null)

            $_x = 0;

        if ($_y == null)

            $_y = 0;

        $_x += $tpl['x'];

        $_y += $tpl['y'];

        $wh = $this->getTemplateSize($tplidx, $_w, $_h);

        $_w = $wh['w'];

        $_h = $wh['h'];

        $tData = array(

            'x' => $this->x,

            'y' => $this->y,

            'w' => $_w,

            'h' => $_h,

            'scaleX' => ($_w / $w),

            'scaleY' => ($_h / $h),

            'tx' => $_x,

            'ty' =>  ($this->h - $_y - $_h),

            'lty' => ($this->h - $_y - $_h) - ($this->h - $h) * ($_h / $h)

        );

        $this->_out(sprintf('q %.4F 0 0 %.4F %.4F %.4F cm', $tData['scaleX'], $tData['scaleY'], $tData['tx'] * $this->k, $tData['ty'] * $this->k)); // Translate 

        $this->_out(sprintf('%s%d Do Q', $this->tplprefix, $tplidx));

        $this->lastUsedTemplateData = $tData;

        return array('w' => $_w, 'h' => $_h);

    }

    /**

     * Get The calculated Size of a Template

     *

     * If one size is given, this method calculates the other one.

     *

     * @param int $tplidx A valid template-Id

     * @param int $_w The width of the template

     * @param int $_h The height of the template

     * @return array The height and width of the template

     */

    function getTemplateSize($tplidx, $_w = 0, $_h = 0) {

        if (!isset($this->tpls[$tplidx]))

            return false;

        $tpl =& $this->tpls[$tplidx];

        $w = $tpl['w'];

        $h = $tpl['h'];

        if ($_w == 0 and $_h == 0) {

            $_w = $w;

            $_h = $h;

        }

            if($_w == 0)

                    $_w = $_h * $w / $h;

            if($_h == 0)

                    $_h = $_w * $h / $w;

        return array("w" => $_w, "h" => $_h);

    }

    /**

     * See FPDF/TCPDF-Documentation ;-)

     */

    public function SetFont($family, $style = '', $size = 0) {

        if (is_subclass_of($this, 'TCPDF')) {

                $args = func_get_args();

                return call_user_func_array(array($this, 'TCPDF::SetFont'), $args);

        }

        parent::SetFont($family, $style, $size);

        $fontkey = $this->FontFamily . $this->FontStyle;

        if ($this->_intpl) {

            $this->_res['tpl'][$this->tpl]['fonts'][$fontkey] =& $this->fonts[$fontkey];

        } else {

            $this->_res['page'][$this->page]['fonts'][$fontkey] =& $this->fonts[$fontkey];

        }

    }

    /**

     * See FPDF/TCPDF-Documentation ;-)

     */

    function Image(

                $file, $x = '', $y = '', $w = 0, $h = 0, $type = '', $link = '', $align = '', $resize = false,

                $dpi = 300, $palign = '', $ismask = false, $imgmask = false, $border = 0, $fitbox = false,

                $hidden = false, $fitonpage = false, $alt = false, $altimgs = array()

    ) {

        if (is_subclass_of($this, 'TCPDF')) {

                $args = func_get_args();

                        return call_user_func_array(array($this, 'TCPDF::Image'), $args);

        }

        $ret = parent::Image($file, $x, $y, $w, $h, $type, $link);

        if ($this->_intpl) {

            $this->_res['tpl'][$this->tpl]['images'][$file] =& $this->images[$file];

        } else {

            $this->_res['page'][$this->page]['images'][$file] =& $this->images[$file];

        }

        return $ret;

    }

    /**

     * See FPDF-Documentation ;-)

     *

     * AddPage is not available when you're "in" a template.

     */

    function AddPage($orientation = '', $format = '', $keepmargins = false, $tocpage = false) {

            if (is_subclass_of($this, 'TCPDF')) {

                $args = func_get_args();

                return call_user_func_array(array($this, 'TCPDF::AddPage'), $args);

        }

        if ($this->_intpl)

            $this->Error('Adding pages in templates isn\'t possible!');

        parent::AddPage($orientation, $format);

    }

    /**

     * Preserve adding Links in Templates ...won't work

     */

    function Link($x, $y, $w, $h, $link, $spaces = 0) {

        if (is_subclass_of($this, 'TCPDF')) {

                $args = func_get_args();

                        return call_user_func_array(array($this, 'TCPDF::Link'), $args);

        }

        if ($this->_intpl)

            $this->Error('Using links in templates aren\'t possible!');

        parent::Link($x, $y, $w, $h, $link);

    }

    function AddLink() {

            if (is_subclass_of($this, 'TCPDF')) {

                $args = func_get_args();

                        return call_user_func_array(array($this, 'TCPDF::AddLink'), $args);

        }

        if ($this->_intpl)

            $this->Error('Adding links in templates aren\'t possible!');

        return parent::AddLink();

    }

    function SetLink($link, $y = 0, $page = -1) {

            if (is_subclass_of($this, 'TCPDF')) {

                $args = func_get_args();

                        return call_user_func_array(array($this, 'TCPDF::SetLink'), $args);

        }

        if ($this->_intpl)

            $this->Error('Setting links in templates aren\'t possible!');

        parent::SetLink($link, $y, $page);

    }

    /**

     * Private Method that writes the form xobjects

     */

    function _putformxobjects() {

        $filter=($this->compress) ? '/Filter /FlateDecode ' : '';

            reset($this->tpls);

        foreach($this->tpls AS $tplidx => $tpl) {

            $p=($this->compress) ? gzcompress($tpl['buffer']) : $tpl['buffer'];

                    $this->_newobj();

                    $this->tpls[$tplidx]['n'] = $this->n;

                    $this->_out('<<'.$filter.'/Type /XObject');

            $this->_out('/Subtype /Form');

            $this->_out('/FormType 1');

            $this->_out(sprintf('/BBox [%.2F %.2F %.2F %.2F]',

                // llx

                $tpl['x'] * $this->k,

                // lly

                -$tpl['y'] * $this->k,

                // urx

                ($tpl['w'] + $tpl['x']) * $this->k,

                // ury

                ($tpl['h'] - $tpl['y']) * $this->k

            ));

            if ($tpl['x'] != 0 || $tpl['y'] != 0) {

                $this->_out(sprintf('/Matrix [1 0 0 1 %.5F %.5F]',

                     -$tpl['x'] * $this->k * 2, $tpl['y'] * $this->k * 2

                ));

            }

            $this->_out('/Resources ');

            $this->_out('<</ProcSet [/PDF /Text /ImageB /ImageC /ImageI]');

                if (isset($this->_res['tpl'][$tplidx]['fonts']) && count($this->_res['tpl'][$tplidx]['fonts'])) {

                    $this->_out('/Font <<');

                foreach($this->_res['tpl'][$tplidx]['fonts'] as $font)

                            $this->_out('/F' . $font['i'] . ' ' . $font['n'] . ' 0 R');

                    $this->_out('>>');

            }

                if(isset($this->_res['tpl'][$tplidx]['images']) && count($this->_res['tpl'][$tplidx]['images']) || 

                   isset($this->_res['tpl'][$tplidx]['tpls']) && count($this->_res['tpl'][$tplidx]['tpls']))

                {

                $this->_out('/XObject <<');

                if (isset($this->_res['tpl'][$tplidx]['images']) && count($this->_res['tpl'][$tplidx]['images'])) {

                    foreach($this->_res['tpl'][$tplidx]['images'] as $image)

                                      $this->_out('/I' . $image['i'] . ' ' . $image['n'] . ' 0 R');

                }

                if (isset($this->_res['tpl'][$tplidx]['tpls']) && count($this->_res['tpl'][$tplidx]['tpls'])) {

                    foreach($this->_res['tpl'][$tplidx]['tpls'] as $i => $tpl)

                        $this->_out($this->tplprefix . $i . ' ' . $tpl['n'] . ' 0 R');

                }

                $this->_out('>>');

                }

                $this->_out('>>');

                $this->_out('/Length ' . strlen($p) . ' >>');

                    $this->_putstream($p);

                    $this->_out('endobj');

        }

    }

    /**

     * Overwritten to add _putformxobjects() after _putimages()

     *

     */

    function _putimages() {

        parent::_putimages();

        $this->_putformxobjects();

    }

    function _putxobjectdict() {

        parent::_putxobjectdict();

        if (count($this->tpls)) {

            foreach($this->tpls as $tplidx => $tpl) {

                $this->_out(sprintf('%s%d %d 0 R', $this->tplprefix, $tplidx, $tpl['n']));

            }

        }

    }

    /**

     * Private Method

     */

    function _out($s) {

        if ($this->state == 2 && $this->_intpl) {

            $this->tpls[$this->tpl]['buffer'] .= $s . "\n";

        } else {

            parent::_out($s);

        }

    }

}