function get_min_width(&$context)
{
if (isset($this->_cache[CACHE_MIN_WIDTH])) {
return $this->_cache[CACHE_MIN_WIDTH];
}
$content_size = count($this->content);
/**
* If box does not have any context, its minimal width is determined by extra horizontal space:
* padding, border width and margins
*/
if ($content_size == 0) {
$min_width = $this->_get_hor_extra();
$this->_cache[CACHE_MIN_WIDTH] = $min_width;
return $min_width;
}
/**
* If we're in 'nowrap' mode, minimal and maximal width will be equal
*/
$white_space = $this->getCSSProperty(CSS_WHITE_SPACE);
$pseudo_nowrap = $this->getCSSProperty(CSS_HTML2PS_NOWRAP);
if ($white_space == WHITESPACE_NOWRAP || $pseudo_nowrap == NOWRAP_NOWRAP) {
$min_width = $this->get_min_nowrap_width($context);
$this->_cache[CACHE_MIN_WIDTH] = $min_width;
return $min_width;
}
/**
* We need to add text indent size to the with of the first item
*/
$start_index = 0;
while ($start_index < $content_size && $this->content[$start_index]->out_of_flow()) {
$start_index++;
}
if ($start_index < $content_size) {
$ti = $this->getCSSProperty(CSS_TEXT_INDENT);
if (!$ti) {
$ti = CSSTextIndent::default_value();
}
$minw = $ti->calculate($this) + $this->content[$start_index]->get_min_width($context);
} else {
$minw = 0;
}
for ($i = $start_index; $i < $content_size; $i++) {
$item =& $this->content[$i];
if (!$item->out_of_flow()) {
$minw = max($minw, $item->get_min_width_natural($context));
}
}
/**
* Apply width constraint to min width. Return maximal value
*/
$wc = $this->getCSSProperty(CSS_WIDTH);
$min_width = max($minw, $wc->apply($minw, $this->parent->get_width())) + $this->_get_hor_extra();
$this->_cache[CACHE_MIN_WIDTH] = $min_width;
return $min_width;
}
function apply(&$box, &$context)
{
$this->_maxw = 0;
// We need to add text indent to the max width
$text_indent = $box->getCSSProperty(CSS_TEXT_INDENT);
# kornev
if (!$text_indent) {
$text_indent = CSSTextIndent::default_value();
}
$this->_cmaxw = $text_indent->calculate($box);
for ($i = 0, $size = count($box->content); $i < $size; $i++) {
$child =& $box->content[$i];
if ($child->isLineBreak()) {
$this->line_break();
} elseif (!$child->out_of_flow()) {
if (is_inline($child) || $child->getCSSProperty(CSS_FLOAT) !== FLOAT_NONE) {
$this->add_width($child->get_max_width($context, $this->_limit));
} else {
$this->line_break();
$this->add_width($child->get_max_width($context, $this->_limit));
// Process special case with percentage constrained table
$item_wc = $child->getCSSProperty(CSS_WIDTH);
if (is_a($child, "TableBox") && is_a($item_wc, "WCFraction")) {
$this->_cmaxw = max($this->_cmaxw, $item_wc->apply($box->get_width(), $box->parent->get_expandable_width()));
}
$this->line_break();
}
}
}
// Check if last line have maximal width
//
$this->line_break();
// Note that max width cannot differ from constrained width,
// if any width constraints apply
//
$wc = $box->getCSSProperty(CSS_WIDTH);
# kornev
if (!$wc) {
$wc = CSSCompositeWidth::default_value();
}
if ($wc->applicable($box)) {
if ($box->parent) {
$this->_maxw = $wc->apply($this->_maxw, $box->parent->get_width());
} else {
$this->_maxw = $wc->apply($this->_maxw, $this->_maxw);
}
}
return $this->_maxw + $box->_get_hor_extra();
}
function apply(&$box, &$context)
{
$this->_maxw = 0;
// We need to add text indent to the max width
$text_indent = $box->getCSSProperty(CSS_TEXT_INDENT);
if (!$text_indent) {
$text_indent = CSSTextIndent::default_value();
}
$this->_cmaxw = $text_indent->calculate($box);
for ($i = 0, $size = count($box->content); $i < $size; $i++) {
$child =& $box->content[$i];
// Note that while BR-generated box is out of flow,
// it should break the current line
if ($child->isLineBreak()) {
$this->line_break();
} elseif (!$child->out_of_flow()) {
if (is_inline($child)) {
$this->add_width($child->get_max_width_natural($context, $this->_limit));
} elseif ($child->getCSSProperty(CSS_FLOAT) !== FLOAT_NONE) {
$wc = $child->getCSSProperty(CSS_WIDTH);
if (!$wc->isFraction()) {
$delta = $child->get_max_width($context, $this->_limit);
} else {
$delta = $child->get_max_width_natural($context, $this->_limit);
}
$this->add_width($delta);
} else {
$this->_maxw = max($this->_maxw, $this->_cmaxw);
$this->_cmaxw = $child->get_max_width_natural($context, $this->_limit);
// Process special case with percentage constrained table
$item = $child;
$item_wc = $item->getCSSProperty(CSS_WIDTH);
if (is_a($item, "TableBox") && $item_wc->isFraction()) {
if (isset($child->parent) && $child->parent) {
$this->_cmaxw = max($this->_cmaxw, $item_wc->apply($child->get_width(), $child->parent->get_expandable_width()));
} else {
$this->_cmaxw = max($this->_cmaxw, $item_wc->apply($child->get_width(), $child->get_width()));
}
}
$this->line_break();
}
}
}
// Check if last line have maximal width
//
$this->_maxw = max($this->_maxw, $this->_cmaxw);
return $this->_maxw + $box->_get_hor_extra();
}
function apply(&$box, &$context)
{
$this->_maxw = 0;
// We need to add text indent to the width
$ti = $box->getCSSProperty(CSS_TEXT_INDENT);
# kornev
if (!$ti) {
$ti = CSSTextIndent::default_value();
}
$this->add_width($ti->calculate($box));
for ($i = 0, $size = count($box->content); $i < $size; $i++) {
$child =& $box->content[$i];
if ($child->isLineBreak()) {
$this->line_break();
} elseif (!$child->out_of_flow()) {
if (is_inline($child)) {
// Inline boxes content will not be wrapped, so we may calculate its max width
$this->add_width($child->get_max_width($context));
} else {
// Non-inline boxes cause line break
$this->line_break();
$this->add_width($child->get_min_width($context));
$this->line_break();
}
}
}
// Check if last line have maximal width
$this->line_break();
// Apply width constraint to min width. Return maximal value
$wc = $box->getCSSProperty(CSS_WIDTH);
# kornev
if (!$wc) {
$wc = CSSCompositeWidth::default_value();
}
return max($this->_maxw, $wc->apply($this->_maxw, $box->parent->get_width())) + $box->_get_hor_extra();
}
