93 lines
3.3 KiB
PHP
Executable File
93 lines
3.3 KiB
PHP
Executable File
<?php
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require_once(HTML2PS_DIR.'filter.post.positioned.class.php');
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class LayoutEngineDefault extends LayoutEngine {
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function process(&$box, &$media, &$driver, &$context) {
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// Calculate the size of text boxes
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if (is_null($box->reflow_text($driver))) {
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error_log("LayoutEngineDefault::process: reflow_text call failed");
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return null;
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};
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// Explicitly remove any height declarations from the BODY-generated box;
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// BODY should always fill last page completely. Percentage height of the BODY is meaningless
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// on the paged media.
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$box->_height_constraint = new HCConstraint(null, null, null);
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$margin = $box->getCSSProperty(CSS_MARGIN);
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$margin->calcPercentages(mm2pt($media->width() - $media->margins['left'] - $media->margins['right']));
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$box->setCSSProperty(CSS_MARGIN, $margin);
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$box->width = mm2pt($media->width() - $media->margins['left'] - $media->margins['right']) -
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$box->_get_hor_extra();
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$box->setCSSProperty(CSS_WIDTH, new WCConstant($box->width));
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$box->height = mm2pt($media->real_height()) - $box->_get_vert_extra();
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$box->put_top(mm2pt($media->height() -
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$media->margins['top']) -
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$box->get_extra_top());
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$box->put_left(mm2pt($media->margins['left']) +
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$box->get_extra_left());
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$flag = false;
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$whitespace_flag = false;
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$box->reflow_whitespace($flag, $whitespace_flag);
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$box->pre_reflow_images();
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$viewport = new FlowViewport();
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$viewport->left = mm2pt($media->margins['left']);
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$viewport->top = mm2pt($media->height() - $media->margins['top']);
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$viewport->width = mm2pt($media->width() - $media->margins['left'] - $media->margins['right']);
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$viewport->height = mm2pt($media->height() - $media->margins['top'] - $media->margins['bottom']);
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$fake_parent = null;
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$context->push_viewport($viewport);
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$box->reflow($fake_parent, $context);
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// Make the top-level box competely fill the last page
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$page_real_height = mm2pt($media->real_height());
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// Note we cannot have less than 1 page in our doc; max() call
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// is required as we, in general, CAN have the content height strictly equal to 0.
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// In this case wi still render the very first page
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$pages = max(1,ceil($box->get_full_height() / $page_real_height));
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/**
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* Set body box height so it will fit the page exactly
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*/
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$box->height = $pages * $page_real_height - $box->_get_vert_extra();
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$driver->set_expected_pages($pages);
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$driver->anchors = array();
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$box->reflow_anchors($driver, $driver->anchors);
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/**
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* Flow absolute-positioned boxes;
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* note that we should know the number of expected pages at this moment, unless
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* we will not be able to calculate positions for elements using 'bottom: ...' CSS property
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*/
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for ($i=0, $num_positioned = count($context->absolute_positioned); $i < $num_positioned; $i++) {
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$context->push();
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$context->absolute_positioned[$i]->reflow_absolute($context);
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$context->pop();
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};
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// Flow fixed-positioned box
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for ($i=0, $num_positioned = count($context->fixed_positioned); $i < $num_positioned; $i++) {
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$context->push();
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$context->fixed_positioned[$i]->reflow_fixed($context);
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$context->pop();
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};
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$box->reflow_inline();
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return true;
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}
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}
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?>
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