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// $Header: /cvsroot/html2ps/box.table.cell.php,v 1.40 2007/01/24 18:55:45 Konstantin Exp $
class TableCellBox extends GenericContainerBox {
var $colspan;
var $rowspan;
var $column;
var $_suppress_first;
var $_suppress_last;
function get_min_width(&$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);
$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 $min_width;
}
function readCSS(&$state) {
parent::readCSS($state);
$this->_readCSS($state,
array(CSS_BORDER_COLLAPSE));
$this->_readCSSLengths($state,
array(CSS_HTML2PS_CELLPADDING,
CSS_HTML2PS_CELLSPACING,
CSS_HTML2PS_TABLE_BORDER));
}
function isCell() {
return true;
}
function is_fake() {
return false;
}
function &create(&$root, &$pipeline) {
$css_state = $pipeline->getCurrentCSSState();
$box =& new TableCellBox();
$box->readCSS($css_state);
// Use cellspacing / cellpadding values from the containing table
$cellspacing = $box->getCSSProperty(CSS_HTML2PS_CELLSPACING);
$cellpadding = $box->getCSSProperty(CSS_HTML2PS_CELLPADDING);
// FIXME: I'll need to resolve that issue with COLLAPSING border model. Now borders
// are rendered separated
// if not border set explicitly, inherit value set via border attribute of TABLE tag
$border_handler = CSS::get_handler(CSS_BORDER);
if ($border_handler->is_default($box->getCSSProperty(CSS_BORDER))) {
$table_border = $box->getCSSProperty(CSS_HTML2PS_TABLE_BORDER);
$box->setCSSProperty(CSS_BORDER, $table_border);
};
$margin =& CSS::get_handler(CSS_MARGIN);
$box->setCSSProperty(CSS_MARGIN, $margin->default_value());
$h_padding =& CSS::get_handler(CSS_PADDING);
$padding = $box->getCSSProperty(CSS_PADDING);
if ($h_padding->is_default($padding)) {
$padding->left->_units = $cellpadding;
$padding->left->auto = false;
$padding->left->percentage = null;
$padding->right->_units = $cellpadding;
$padding->right->auto = false;
$padding->right->percentage = null;
$padding->top->_units = $cellpadding;
$padding->top->auto = false;
$padding->top->percentage = null;
$padding->bottom->_units = $cellpadding;
$padding->bottom->auto = false;
$padding->bottom->percentage = null;
/**
* Note that cellpadding/cellspacing values never use font-size based units
* ('em' and 'ex'), so we may pass 0 as base_font_size parameter - it
* will not be used anyway
*/
$padding->units2pt(0);
$box->setCSSProperty(CSS_PADDING, $padding);
};
if ($box->getCSSProperty(CSS_BORDER_COLLAPSE) != BORDER_COLLAPSE) {
$margin_value = $box->getCSSProperty(CSS_MARGIN);
if ($margin->is_default($margin_value)) {
$length = $cellspacing->copy();
$length->scale(0.5);
$margin_value->left->_units = $length;
$margin_value->left->auto = false;
$margin_value->left->percentage = null;
$margin_value->right->_units = $length;
$margin_value->right->auto = false;
$margin_value->right->percentage = null;
$margin_value->top->_units = $length;
$margin_value->top->auto = false;
$margin_value->top->percentage = null;
$margin_value->bottom->_units = $length;
$margin_value->bottom->auto = false;
$margin_value->bottom->percentage = null;
/**
* Note that cellpadding/cellspacing values never use font-size based units
* ('em' and 'ex'), so we may pass 0 as base_font_size parameter - it
* will not be used anyway
*/
$margin_value->units2pt(0);
$box->setCSSProperty(CSS_MARGIN, $margin_value);
}
};
// Save colspan and rowspan information
$box->colspan = max(1,(int)$root->get_attribute('colspan'));
$box->rowspan = max(1,(int)$root->get_attribute('rowspan'));
// Create content
// 'vertical-align' CSS value is not inherited from the table cells
$css_state->pushState();
$handler =& CSS::get_handler(CSS_VERTICAL_ALIGN);
$handler->replace($handler->default_value(),
$css_state);
$box->create_content($root, $pipeline);
global $g_config;
if ($g_config['mode'] == "quirks") {
// QUIRKS MODE:
// H1-H6 and P elements should have their top/bottom margin suppressed if they occur as the first/last table cell child
// correspondingly; note that we cannot do it usung CSS rules, as there's no selectors for the last child.
//
$child = $root->first_child();
if ($child) {
while ($child && $child->node_type() != XML_ELEMENT_NODE) {
$child = $child->next_sibling();
};
if ($child) {
if (array_search(strtolower($child->tagname()), array("h1","h2","h3","h4","h5","h6","p"))) {
$box->_suppress_first = true;
}
};
};
$child = $root->last_child();
if ($child) {
while ($child && $child->node_type() != XML_ELEMENT_NODE) {
$child = $child->previous_sibling();
};
if ($child) {
if (array_search(strtolower($child->tagname()), array("h1","h2","h3","h4","h5","h6","p"))) {
$box->_suppress_last = true;
}
};
};
};
// pop the default vertical-align value
$css_state->popState();
return $box;
}
function TableCellBox() {
// Call parent constructor
$this->GenericContainerBox();
$this->_suppress_first = false;
$this->_suppress_last = false;
$this->colspan = 1;
$this->rowspan = 1;
// This value will be overwritten in table 'normalize_parent' method
//
$this->column = 0;
$this->row = 0;
}
// Inherited from GenericFormattedBox
function get_cell_baseline() {
$content = $this->get_first_data();
if (is_null($content)) {
return 0;
}
return $content->baseline;
}
// Flow-control
function reflow(&$parent, &$context) {
GenericFormattedBox::reflow($parent, $context);
global $g_config;
$size = count($this->content);
if ($g_config['mode'] == "quirks" && $size > 0) {
// QUIRKS MODE:
// H1-H6 and P elements should have their top/bottom margin suppressed if they occur as the first/last table cell child
// correspondingly; note that we cannot do it usung CSS rules, as there's no selectors for the last child.
//
$first =& $this->get_first();
if (!is_null($first) && $this->_suppress_first && $first->isBlockLevel()) {
$first->margin->top->value = 0;
$first->margin->top->percentage = null;
};
$last =& $this->get_last();
if (!is_null($last) && $this->_suppress_last && $last->isBlockLevel()) {
$last->margin->bottom->value = 0;
$last->margin->bottom->percentage = null;
};
};
// Determine upper-left _content_ corner position of current box
$this->put_left($parent->_current_x + $this->get_extra_left());
// NOTE: Table cell margin is used as a cell-spacing value
$border = $this->getCSSProperty(CSS_BORDER);
$padding = $this->getCSSProperty(CSS_PADDING);
$this->put_top($parent->_current_y -
$border->top->get_width() -
$padding->top->value);
// CSS 2.1:
// Floats, absolutely positioned elements, inline-blocks, table-cells, and elements with 'overflow' other than
// 'visible' establish new block formatting contexts.
$context->push();
$context->push_container_uid($this->uid);
// Reflow cell content
$this->reflow_content($context);
// Extend the table cell height to fit all contained floats
//
// Determine the bottom edge corrdinate of the bottommost float
//
$float_bottom = $context->float_bottom();
if (!is_null($float_bottom)) {
$this->extend_height($float_bottom);
};
// Restore old context
$context->pop_container_uid();
$context->pop();
}
}
?> |