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<?php
/**
* This file is part of FPDI
*
* @package setasign\Fpdi
* @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
* @license http://opensource.org/licenses/mit-license The MIT License
*/
namespace setasign\Fpdi;
/**
* Trait FpdfTplTrait
*
* This class adds a templating feature to tFPDF.
*/
trait FpdfTplTrait
{
/**
* Data of all created templates.
*
* @var array
*/
protected $templates = [];
/**
* The template id for the currently created template.
*
* @var null|int
*/
protected $currentTemplateId;
/**
* A counter for template ids.
*
* @var int
*/
protected $templateId = 0;
/**
* Set the page format of the current page.
*
* @param array $size An array with two values defining the size.
* @param string $orientation "L" for landscape, "P" for portrait.
* @throws \BadMethodCallException
*/
public function setPageFormat($size, $orientation)
{
if ($this->currentTemplateId !== null) {
throw new \BadMethodCallException('The page format cannot be changed when writing to a template.');
}
if (!\in_array($orientation, ['P', 'L'], true)) {
throw new \InvalidArgumentException(\sprintf(
'Invalid page orientation "%s"! Only "P" and "L" are allowed!',
$orientation
));
}
$size = $this->_getpagesize($size);
if (
$orientation != $this->CurOrientation
|| $size[0] != $this->CurPageSize[0]
|| $size[1] != $this->CurPageSize[1]
) {
// New size or orientation
if ($orientation === 'P') {
$this->w = $size[0];
$this->h = $size[1];
} else {
$this->w = $size[1];
$this->h = $size[0];
}
$this->wPt = $this->w * $this->k;
$this->hPt = $this->h * $this->k;
$this->PageBreakTrigger = $this->h - $this->bMargin;
$this->CurOrientation = $orientation;
$this->CurPageSize = $size;
$this->PageInfo[$this->page]['size'] = array($this->wPt, $this->hPt);
}
}
/**
* Draws a template onto the page or another template.
*
* Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
* aspect ratio.
*
* @param mixed $tpl The template id
* @param array|float|int $x The abscissa of upper-left corner. Alternatively you could use an assoc array
* with the keys "x", "y", "width", "height", "adjustPageSize".
* @param float|int $y The ordinate of upper-left corner.
* @param float|int|null $width The width.
* @param float|int|null $height The height.
* @param bool $adjustPageSize
* @return array The size
* @see FpdfTplTrait::getTemplateSize()
*/
public function useTemplate($tpl, $x = 0, $y = 0, $width = null, $height = null, $adjustPageSize = false)
{
if (!isset($this->templates[$tpl])) {
throw new \InvalidArgumentException('Template does not exist!');
}
if (\is_array($x)) {
unset($x['tpl']);
\extract($x, EXTR_IF_EXISTS);
/** @noinspection NotOptimalIfConditionsInspection */
/** @noinspection PhpConditionAlreadyCheckedInspection */
if (\is_array($x)) {
$x = 0;
}
}
$template = $this->templates[$tpl];
$originalSize = $this->getTemplateSize($tpl);
$newSize = $this->getTemplateSize($tpl, $width, $height);
if ($adjustPageSize) {
$this->setPageFormat($newSize, $newSize['orientation']);
}
$this->_out(
// reset standard values, translate and scale
\sprintf(
'q 0 J 1 w 0 j 0 G 0 g %.4F 0 0 %.4F %.4F %.4F cm /%s Do Q',
($newSize['width'] / $originalSize['width']),
($newSize['height'] / $originalSize['height']),
$x * $this->k,
($this->h - $y - $newSize['height']) * $this->k,
$template['id']
)
);
return $newSize;
}
/**
* Get the size of a template.
*
* Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
* aspect ratio.
*
* @param mixed $tpl The template id
* @param float|int|null $width The width.
* @param float|int|null $height The height.
* @return array|bool An array with following keys: width, height, 0 (=width), 1 (=height), orientation (L or P)
*/
public function getTemplateSize($tpl, $width = null, $height = null)
{
if (!isset($this->templates[$tpl])) {
return false;
}
if ($width === null && $height === null) {
$width = $this->templates[$tpl]['width'];
$height = $this->templates[$tpl]['height'];
} elseif ($width === null) {
$width = $height * $this->templates[$tpl]['width'] / $this->templates[$tpl]['height'];
}
if ($height === null) {
$height = $width * $this->templates[$tpl]['height'] / $this->templates[$tpl]['width'];
}
if ($height <= 0. || $width <= 0.) {
throw new \InvalidArgumentException('Width or height parameter needs to be larger than zero.');
}
return [
'width' => $width,
'height' => $height,
0 => $width,
1 => $height,
'orientation' => $width > $height ? 'L' : 'P'
];
}
/**
* Begins a new template.
*
* @param float|int|null $width The width of the template. If null, the current page width is used.
* @param float|int|null $height The height of the template. If null, the current page height is used.
* @param bool $groupXObject Define the form XObject as a group XObject to support transparency (if used).
* @return int A template identifier.
*/
public function beginTemplate($width = null, $height = null, $groupXObject = false)
{
if ($width === null) {
$width = $this->w;
}
if ($height === null) {
$height = $this->h;
}
$templateId = $this->getNextTemplateId();
// initiate buffer with current state of FPDF
$buffer = "2 J\n"
. \sprintf('%.2F w', $this->LineWidth * $this->k) . "\n";
if ($this->FontFamily) {
$buffer .= \sprintf("BT /F%d %.2F Tf ET\n", $this->CurrentFont['i'], $this->FontSizePt);
}
if ($this->DrawColor !== '0 G') {
$buffer .= $this->DrawColor . "\n";
}
if ($this->FillColor !== '0 g') {
$buffer .= $this->FillColor . "\n";
}
if ($groupXObject && \version_compare('1.4', $this->PDFVersion, '>')) {
$this->PDFVersion = '1.4';
}
$this->templates[$templateId] = [
'objectNumber' => null,
'id' => 'TPL' . $templateId,
'buffer' => $buffer,
'width' => $width,
'height' => $height,
'groupXObject' => $groupXObject,
'state' => [
'x' => $this->x,
'y' => $this->y,
'AutoPageBreak' => $this->AutoPageBreak,
'bMargin' => $this->bMargin,
'tMargin' => $this->tMargin,
'lMargin' => $this->lMargin,
'rMargin' => $this->rMargin,
'h' => $this->h,
'w' => $this->w,
'FontFamily' => $this->FontFamily,
'FontStyle' => $this->FontStyle,
'FontSizePt' => $this->FontSizePt,
'FontSize' => $this->FontSize,
'underline' => $this->underline,
'TextColor' => $this->TextColor,
'DrawColor' => $this->DrawColor,
'FillColor' => $this->FillColor,
'ColorFlag' => $this->ColorFlag
]
];
$this->SetAutoPageBreak(false);
$this->currentTemplateId = $templateId;
$this->h = $height;
$this->w = $width;
$this->SetXY($this->lMargin, $this->tMargin);
$this->SetRightMargin($this->w - $width + $this->rMargin);
return $templateId;
}
/**
* Ends a template.
*
* @return bool|int|null A template identifier.
*/
public function endTemplate()
{
if ($this->currentTemplateId === null) {
return false;
}
$templateId = $this->currentTemplateId;
$template = $this->templates[$templateId];
$state = $template['state'];
$this->SetXY($state['x'], $state['y']);
$this->tMargin = $state['tMargin'];
$this->lMargin = $state['lMargin'];
$this->rMargin = $state['rMargin'];
$this->h = $state['h'];
$this->w = $state['w'];
$this->SetAutoPageBreak($state['AutoPageBreak'], $state['bMargin']);
$this->FontFamily = $state['FontFamily'];
$this->FontStyle = $state['FontStyle'];
$this->FontSizePt = $state['FontSizePt'];
$this->FontSize = $state['FontSize'];
$this->TextColor = $state['TextColor'];
$this->DrawColor = $state['DrawColor'];
$this->FillColor = $state['FillColor'];
$this->ColorFlag = $state['ColorFlag'];
$this->underline = $state['underline'];
$fontKey = $this->FontFamily . $this->FontStyle;
if ($fontKey) {
$this->CurrentFont =& $this->fonts[$fontKey];
} else {
unset($this->CurrentFont);
}
$this->currentTemplateId = null;
return $templateId;
}
/**
* Get the next template id.
*
* @return int
*/
protected function getNextTemplateId()
{
return $this->templateId++;
}
/* overwritten FPDF methods: */
/**
* @inheritdoc
*/
public function AddPage($orientation = '', $size = '', $rotation = 0)
{
if ($this->currentTemplateId !== null) {
throw new \BadMethodCallException('Pages cannot be added when writing to a template.');
}
parent::AddPage($orientation, $size, $rotation);
}
/**
* @inheritdoc
*/
public function Link($x, $y, $w, $h, $link)
{
if ($this->currentTemplateId !== null) {
throw new \BadMethodCallException('Links cannot be set when writing to a template.');
}
parent::Link($x, $y, $w, $h, $link);
}
/**
* @inheritdoc
*/
public function SetLink($link, $y = 0, $page = -1)
{
if ($this->currentTemplateId !== null) {
throw new \BadMethodCallException('Links cannot be set when writing to a template.');
}
return parent::SetLink($link, $y, $page);
}
/**
* @inheritdoc
*/
public function SetDrawColor($r, $g = null, $b = null)
{
parent::SetDrawColor($r, $g, $b);
if ($this->page === 0 && $this->currentTemplateId !== null) {
$this->_out($this->DrawColor);
}
}
/**
* @inheritdoc
*/
public function SetFillColor($r, $g = null, $b = null)
{
parent::SetFillColor($r, $g, $b);
if ($this->page === 0 && $this->currentTemplateId !== null) {
$this->_out($this->FillColor);
}
}
/**
* @inheritdoc
*/
public function SetLineWidth($width)
{
parent::SetLineWidth($width);
if ($this->page === 0 && $this->currentTemplateId !== null) {
$this->_out(\sprintf('%.2F w', $width * $this->k));
}
}
/**
* @inheritdoc
*/
public function SetFont($family, $style = '', $size = 0)
{
parent::SetFont($family, $style, $size);
if ($this->page === 0 && $this->currentTemplateId !== null) {
$this->_out(\sprintf('BT /F%d %.2F Tf ET', $this->CurrentFont['i'], $this->FontSizePt));
}
}
/**
* @inheritdoc
*/
public function SetFontSize($size)
{
parent::SetFontSize($size);
if ($this->page === 0 && $this->currentTemplateId !== null) {
$this->_out(sprintf('BT /F%d %.2F Tf ET', $this->CurrentFont['i'], $this->FontSizePt));
}
}
/**
* @inheritdoc
*/
protected function _putimages()
{
parent::_putimages();
foreach ($this->templates as $key => $template) {
$this->_newobj();
$this->templates[$key]['objectNumber'] = $this->n;
$this->_put('<</Type /XObject /Subtype /Form /FormType 1');
$this->_put(\sprintf(
'/BBox[0 0 %.2F %.2F]',
$template['width'] * $this->k,
$template['height'] * $this->k
));
$this->_put('/Resources 2 0 R'); // default resources dictionary of FPDF
if ($this->compress) {
$buffer = \gzcompress($template['buffer']);
$this->_put('/Filter/FlateDecode');
} else {
$buffer = $template['buffer'];
}
$this->_put('/Length ' . \strlen($buffer));
if ($template['groupXObject']) {
$this->_put('/Group <</Type/Group/S/Transparency>>');
}
$this->_put('>>');
$this->_putstream($buffer);
$this->_put('endobj');
}
}
/**
* @inheritdoc
*/
protected function _putxobjectdict()
{
foreach ($this->templates as $key => $template) {
$this->_put('/' . $template['id'] . ' ' . $template['objectNumber'] . ' 0 R');
}
parent::_putxobjectdict();
}
/**
* @inheritdoc
*/
public function _out($s)
{
if ($this->currentTemplateId !== null) {
$this->templates[$this->currentTemplateId]['buffer'] .= $s . "\n";
} else {
parent::_out($s);
}
}
}