/**
* Render a single text box
*
* All markup inside of the given string is considered inline markup (in
* CSS terms). Inline markup should be given as common docbook inline
* markup, like <emphasis>.
*
* Returns a boolean indicator whether the rendering of the full text
* in the available space succeeded or not.
*
* @param ezcDocumentPdfPage $page
* @param ezcDocumentPdfHyphenator $hyphenator
* @param ezcDocumentPdfTokenizer $tokenizer
* @param ezcDocumentLocateableDomElement $text
* @param ezcDocumentPdfMainRenderer $mainRenderer
* @return bool
*
* @todo This method does not respect changes in the available text width,
* if a paragraph is wrapped to the next page. This would require token
* reordering, which is not implemented yet.
*/
public function renderNode(ezcDocumentPdfPage $page, ezcDocumentPdfHyphenator $hyphenator, ezcDocumentPdfTokenizer $tokenizer, ezcDocumentLocateableDomElement $text, ezcDocumentPdfMainRenderer $mainRenderer)
{
// Inference page styles
$styles = $this->styles->inferenceFormattingRules($text);
$width = $mainRenderer->calculateTextWidth($page, $text);
// Evaluate available space
if (($space = $this->evaluateAvailableBoundingBox($page, $styles, $width)) === false) {
return false;
}
// Iterate over tokens and try to fit them in the current line, use
// hyphenator to split words.
$tokens = $this->tokenize($text, $tokenizer);
$lines = $this->fitTokensInLines($tokens, $hyphenator, $space->width);
// Transaction wrapping around temporary page creations
$transaction = $this->driver->startTransaction();
$lineCount = count($lines);
$current = 0;
$position = $space->y;
$pageNr = 0;
$wrap = false;
$pages = array($pageNr => array('page' => $page, 'lines' => array(), 'space' => $space));
for ($line = 0; $line < $lineCount; ++$line) {
// Render on current page, of there is still enough space
if (!$wrap && $position + $lines[$line]['height'] < $pages[$pageNr]['space']->y + $pages[$pageNr]['space']->height) {
++$current;
// Check widows, if we are at the last line
if ($line === $lineCount - 1 && $current < $styles['widows']->value && $lineCount >= $styles['widows']->value) {
$difference = $styles['widows']->value - $current;
$pages[$pageNr - 1]['lines'] = array_slice($pages[$pageNr - 1]['lines'], 0, -$difference, true);
$pages[$pageNr]['lines'] = array();
$line = $lineCount - $styles['widows']->value - 1;
$current = 0;
continue;
}
$pages[$pageNr]['lines'][] = array('position' => $position, 'line' => $lines[$line]);
$position += $lines[$line]['height'] * $styles['line-height']->value;
continue;
}
// Shift to next page
$pages[++$pageNr] = array('page' => $tmpPage = $mainRenderer->getNextRenderingPosition(($pWidth = $mainRenderer->calculateTextWidth($page, $text)) + $styles['text-column-spacing']->value, $pWidth), 'lines' => array(), 'space' => $this->evaluateAvailableBoundingBox($tmpPage, $styles, $width));
$position = $pages[$pageNr]['space']->y;
$current = 0;
$wrap = false;
// Handle orphans
if ($line < $styles['orphans']->value && $line < $lineCount) {
$pages[0]['lines'] = array();
$line = -1;
continue;
}
--$line;
}
$this->driver->revert($transaction);
// Render lines
$lineNr = 0;
foreach ($pages as $nr => $content) {
if ($nr > 0) {
// Get next rendering position
$page = $mainRenderer->getNextRenderingPosition(($pWidth = $mainRenderer->calculateTextWidth($page, $text)) + $styles['text-column-spacing']->value, $pWidth);
}
if (!count($content['lines'])) {
continue;
}
// Render background & border
$space = $content['space'];
$lastLine = end($content['lines']);
$space->height = $lastLine['position'] + $lastLine['line']['height'] - $space->y;
$this->renderBoxBackground($space, $styles);
$this->renderBoxBorder($space, $styles, $nr === 0, $nr + 1 >= count($pages));
$this->setBoxCovered($page, $space, $styles);
// Render actual text contents
foreach ($content['lines'] as $line) {
$this->renderLine($line['position'], $lineNr++, $line['line'], $space, $styles);
}
}
return true;
}
/**
* Process to render the table into its boundings.
*
* @param ezcDocumentPdfPage $page
* @param ezcDocumentPdfHyphenator $hyphenator
* @param ezcDocumentPdfTokenizer $tokenizer
* @param ezcDocumentLocateableDomElement $block
* @param ezcDocumentPdfMainRenderer $mainRenderer
*/
protected function processTable(ezcDocumentPdfPage $page, ezcDocumentPdfHyphenator $hyphenator, ezcDocumentPdfTokenizer $tokenizer, ezcDocumentLocateableDomElement $block, ezcDocumentPdfMainRenderer $mainRenderer)
{
$tableColumnWidths = $this->options->tableColumnWidthCalculator->estimateWidths($block);
$styles = $this->styles->inferenceFormattingRules($block);
$renderWidth = $mainRenderer->calculateTextWidth($page, $block);
$space = $this->evaluateAvailableBoundingBox($page, $styles, $renderWidth);
$this->tableBox = array('box' => $box = clone $space, 'styles' => $styles);
$this->renderTopBorder($styles, $box);
$xpath = new DOMXPath($block->ownerDocument);
$xPosition = $page->x;
foreach ($xpath->query('./*/*/*[local-name() = "row"] | ./*/*[local-name() = "row"]', $block) as $rowNr => $row) {
$xOffset = 0;
$this->cellBoxes = array();
$positions = array();
$pageStartId = $page->orderedId;
$lastPage = array();
foreach ($xpath->query('./*[local-name() = "entry"]', $row) as $nr => $cell) {
list($pageId, $position) = $this->renderCell($page, $hyphenator, $tokenizer, $cell, $styles, $space, $xOffset, $tableColumnWidths[$nr]);
$positions[$pageId][] = $position;
$xOffset += $tableColumnWidths[$nr];
$lastPage[$pageId] = $this->lastPageForCell;
// Go back to page, where each cell in the row shoudl start the
// rendering
$this->driver->selectPage($pageStartId);
}
// Close borders
foreach ($this->additionalBorders as $page => $borders) {
$this->driver->selectPage($page);
foreach ($borders as $border) {
call_user_func_array(array($this, 'renderBoxBorder'), $border);
}
}
$this->additionalBorders = array();
$lastPageId = max(array_keys($positions));
$page = $lastPage[$lastPageId];
// Forward page to last page used during cell rendering
$this->driver->selectPage($lastPageId);
$page->x = $xPosition;
foreach ($this->cellBoxes as $cell) {
$cell['box']->height = max($positions[$lastPageId]) - $cell['box']->y;
$this->renderBoxBorder($cell['box'], $cell['styles'], false);
$this->setCellCovered($page, $cell['box'], $styles);
}
// Set page->y again, since setBoxCovered() increased it, which we
// do not want in this case.
$page->y = max($positions[$lastPageId]);
$space->y = $page->y = $page->y + $cell['styles']['padding']->value['bottom'] + $cell['styles']['border']->value['bottom']['width'] + $cell['styles']['margin']->value['bottom'];
}
$box->height = $space->y - $box->y;
$this->renderBoxBorder($box, $styles, false);
}
