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<?php
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class StrategyWidthMax {
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var $_limit;
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var $_maxw;
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var $_cmaxw;
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function StrategyWidthMax($limit = 10E6) {
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$this->_limit = $limit;
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}
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function add_width($delta) {
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if ($this->_cmaxw + $delta > $this->_limit) {
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$this->line_break();
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};
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$this->_cmaxw += $delta;
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}
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function line_break() {
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$this->_maxw = max($this->_maxw, $this->_cmaxw);
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$this->_cmaxw = 0;
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}
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function apply(&$box, &$context) {
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$this->_maxw = 0;
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// We need to add text indent to the max width
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$text_indent = $box->get_css_property(CSS_TEXT_INDENT);
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$this->_cmaxw = $text_indent->calculate($box);
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for ($i=0, $size = count($box->content); $i<$size; $i++) {
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$child =& $box->content[$i];
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if ($child->isLineBreak()) {
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$this->line_break();
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} elseif (!$child->out_of_flow()) {
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if (is_inline($child) ||
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$child->get_css_property(CSS_FLOAT) !== FLOAT_NONE) {
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$this->add_width($child->get_max_width($context, $this->_limit));
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} else {
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$this->line_break();
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$this->add_width($child->get_max_width($context, $this->_limit));
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// Process special case with percentage constrained table
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$item_wc = $child->get_css_property(CSS_WIDTH);
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if (is_a($child, "TableBox") &&
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is_a($item_wc, "WCFraction")) {
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$this->_cmaxw = max($this->_cmaxw,
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$item_wc->apply($box->get_width(),
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$box->parent->get_expandable_width()));
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};
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$this->line_break();
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};
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};
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}
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// Check if last line have maximal width
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//
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$this->line_break();
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// Note that max width cannot differ from constrained width,
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// if any width constraints apply
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//
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$wc = $box->get_css_property(CSS_WIDTH);
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if ($wc->applicable($box)) {
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if ($box->parent) {
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$this->_maxw = $wc->apply($this->_maxw, $box->parent->get_width());
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} else {
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$this->_maxw = $wc->apply($this->_maxw, $this->_maxw);
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};
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};
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return $this->_maxw + $box->_get_hor_extra();
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}
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}
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?>
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