function reflow(Frame_Decorator $block = null)
{
// Check if a page break is forced
$page = $this->_frame->get_root();
$page->check_forced_page_break($this->_frame);
// Bail if the page is full
if ($page->is_full()) {
return;
}
// Generated content
$this->_set_content();
// Collapse margins if required
$this->_collapse_margins();
$style = $this->_frame->get_style();
$cb = $this->_frame->get_containing_block();
if ($style->counter_increment && ($increment = $style->counter_increment) !== "none") {
$this->_frame->increment_counter($increment);
}
if ($style->position === "fixed") {
$cb = $this->_frame->get_root()->get_containing_block();
}
// Determine the constraints imposed by this frame: calculate the width
// of the content area:
list($w, $left_margin, $right_margin, $left, $right) = $this->_calculate_restricted_width();
// Store the calculated properties
$style->width = $w . "pt";
$style->margin_left = $left_margin . "pt";
$style->margin_right = $right_margin . "pt";
$style->left = $left . "pt";
$style->right = $right . "pt";
// Update the position
$this->_frame->position();
list($x, $y) = $this->_frame->get_position();
// Adjust the first line based on the text-indent property
$indent = $style->length_in_pt($style->text_indent, $cb["w"]);
$this->_frame->increase_line_width($indent);
// Determine the content edge
$top = $style->length_in_pt(array($style->margin_top, $style->padding_top, $style->border_top_width), $cb["h"]);
$bottom = $style->length_in_pt(array($style->border_bottom_width, $style->margin_bottom, $style->padding_bottom), $cb["h"]);
$cb_x = $x + $left_margin + $style->length_in_pt(array($style->border_left_width, $style->padding_left), $cb["w"]);
$cb_y = $y + $top;
$cb_h = $cb["h"] + $cb["y"] - $bottom - $cb_y;
// Set the y position of the first line in this block
$this->_frame->set_current_line($cb_y);
$floating_children = array();
// Set the containing blocks and reflow each child
foreach ($this->_frame->get_children() as $child) {
// Bail out if the page is full
if ($page->is_full()) {
break;
}
// Floating siblings
if (DOMPDF_ENABLE_CSS_FLOAT && count($floating_children)) {
$offset_left = 0;
$offset_right = 0;
// We need to reflow the child to know its initial x position
$child->set_containing_block($cb_x, $cb_y, $w, $cb_h);
$child->reflow($this->_frame);
$current_line = $this->_frame->get_current_line();
foreach ($floating_children as $child_key => $floating_child) {
$float = $floating_child->get_style()->float;
$floating_width = $floating_child->get_margin_width();
$floating_x = $floating_child->get_position("x");
if ($float === "left") {
if ($current_line["left"] + $child->get_position("x") > $floating_x + $floating_width) {
continue;
}
} else {
if ($current_line["left"] + $child->get_position("x") + $child->get_margin_width() < $w - $floating_width - $current_line["right"]) {
continue;
}
}
// If the child is still shifted by the floating element
if ($floating_child->get_position("y") + $floating_child->get_margin_height() > $current_line["y"]) {
if ($float === "left") {
$offset_left += $floating_width;
} else {
$offset_right += $floating_width;
}
} else {
unset($floating_children[$child_key]);
}
}
if ($offset_left) {
$this->_frame->set_current_line(array("left" => $offset_left));
}
if ($offset_right) {
$this->_frame->set_current_line(array("right" => $offset_right));
}
}
$child->set_containing_block($cb_x, $cb_y, $w, $cb_h);
$child->reflow($this->_frame);
// Don't add the child to the line if a page break has occurred
if ($page->check_page_break($child)) {
break;
}
$child_style = $child->get_style();
if (DOMPDF_ENABLE_CSS_FLOAT && $child_style->float !== "none") {
$floating_children[] = $child;
// Remove next frame's beginning whitespace
$next = $child->get_next_sibling();
if ($next && $next instanceof Text_Frame_Decorator) {
$next->set_text(ltrim($next->get_text()));
}
$float_x = $cb_x;
$float_y = $this->_frame->get_current_line("y");
$child_style = $child->get_style();
switch ($child_style->float) {
case "left":
break;
case "right":
$width = $w;
$float_x += $width - $child->get_margin_width();
break;
}
$child->set_position($float_x, $float_y);
}
}
// Determine our height
list($height, $margin_top, $margin_bottom, $top, $bottom) = $this->_calculate_restricted_height();
$style->height = $height;
$style->margin_top = $margin_top;
$style->margin_bottom = $margin_bottom;
$style->top = $top;
$style->bottom = $bottom;
$this->_text_align();
$this->vertical_align();
if ($block) {
$block->add_frame_to_line($this->_frame);
}
}
function reflow(Frame_Decorator $block = null)
{
// Check if a page break is forced
$page = $this->_frame->get_root();
$page->check_forced_page_break($this->_frame);
// Bail if the page is full
if ($page->is_full()) {
return;
}
// Generated content
$this->_set_content();
// Collapse margins if required
$this->_collapse_margins();
$style = $this->_frame->get_style();
$cb = $this->_frame->get_containing_block();
if ($style->position === "fixed") {
$cb = $this->_frame->get_root()->get_containing_block();
}
// Determine the constraints imposed by this frame: calculate the width
// of the content area:
list($w, $left_margin, $right_margin, $left, $right) = $this->_calculate_restricted_width();
// Store the calculated properties
$style->width = $w . "pt";
$style->margin_left = $left_margin . "pt";
$style->margin_right = $right_margin . "pt";
$style->left = $left . "pt";
$style->right = $right . "pt";
// Update the position
$this->_frame->position();
list($x, $y) = $this->_frame->get_position();
// Adjust the first line based on the text-indent property
$indent = $style->length_in_pt($style->text_indent, $cb["w"]);
$this->_frame->increase_line_width($indent);
// Determine the content edge
$top = $style->length_in_pt(array($style->margin_top, $style->padding_top, $style->border_top_width), $cb["h"]);
$bottom = $style->length_in_pt(array($style->border_bottom_width, $style->margin_bottom, $style->padding_bottom), $cb["h"]);
$cb_x = $x + $left_margin + $style->length_in_pt(array($style->border_left_width, $style->padding_left), $cb["w"]);
$cb_y = $y + $top;
$cb_h = $cb["h"] + $cb["y"] - $bottom - $cb_y;
// Set the y position of the first line in this block
$this->_frame->set_current_line($cb_y);
$this->_frame->get_current_line_box()->get_float_offsets();
// Set the containing blocks and reflow each child
foreach ($this->_frame->get_children() as $child) {
// Bail out if the page is full
if ($page->is_full()) {
break;
}
$child->set_containing_block($cb_x, $cb_y, $w, $cb_h);
$this->process_clear($child);
$child->reflow($this->_frame);
// Don't add the child to the line if a page break has occurred
if ($page->check_page_break($child)) {
break;
}
$this->process_float($child, $cb_x, $w);
}
// Determine our height
list($height, $margin_top, $margin_bottom, $top, $bottom) = $this->_calculate_restricted_height();
$style->height = $height;
$style->margin_top = $margin_top;
$style->margin_bottom = $margin_bottom;
$style->top = $top;
$style->bottom = $bottom;
$needs_reposition = $style->position === "absolute" && ($style->right !== "auto" || $style->bottom !== "auto");
// Absolute positioning measurement
if ($needs_reposition) {
$orig_style = $this->_frame->get_original_style();
if ($orig_style->width === "auto" && ($orig_style->left === "auto" || $orig_style->right === "auto")) {
$width = 0;
foreach ($this->_frame->get_line_boxes() as $line) {
$width = max($line->w, $width);
}
$style->width = $width;
}
$style->left = $orig_style->left;
$style->right = $orig_style->right;
}
$this->_text_align();
$this->vertical_align();
// Absolute positioning
if ($needs_reposition) {
list($x, $y) = $this->_frame->get_position();
$this->_frame->position();
list($new_x, $new_y) = $this->_frame->get_position();
$this->_frame->move($new_x - $x, $new_y - $y, true);
}
if ($block && $this->_frame->is_in_flow()) {
$block->add_frame_to_line($this->_frame);
// May be inline-block
if ($style->display === "block") {
$block->add_line();
}
}
}
/**
* Adjust the justification of each of our lines.
* http://www.w3.org/TR/CSS21/text.html#propdef-text-align
*/
protected function _text_align()
{
$style = $this->_frame->get_style();
$w = $this->_frame->get_containing_block("w");
$width = $style->length_in_pt($style->width, $w);
switch ($style->text_align) {
default:
case "left":
foreach ($this->_frame->get_line_boxes() as $line) {
if (!$line->left) {
continue;
}
foreach ($line->get_frames() as $frame) {
if ($frame instanceof Block_Frame_Decorator) {
continue;
}
$frame->set_position($frame->get_position("x") + $line->left);
}
}
return;
case "right":
foreach ($this->_frame->get_line_boxes() as $line) {
// Move each child over by $dx
$dx = $width - $line->w - $line->right;
foreach ($line->get_frames() as $frame) {
// Block frames are not aligned by text-align
if ($frame instanceof Block_Frame_Decorator) {
continue;
}
$frame->set_position($frame->get_position("x") + $dx);
}
}
break;
case "justify":
// We justify all lines except the last one
$lines = $this->_frame->get_line_boxes();
// needs to be a variable (strict standards)
array_pop($lines);
foreach ($lines as $i => $line) {
if ($line->br) {
unset($lines[$i]);
}
}
// One space character's width. Will be used to get a more accurate spacing
$space_width = Font_Metrics::get_text_width(" ", $style->font_family, $style->font_size);
foreach ($lines as $line) {
if ($line->left) {
foreach ($line->get_frames() as $frame) {
if (!$frame instanceof Text_Frame_Decorator) {
continue;
}
$frame->set_position($frame->get_position("x") + $line->left);
}
}
// Only set the spacing if the line is long enough. This is really
// just an aesthetic choice ;)
//if ( $line["left"] + $line["w"] + $line["right"] > self::MIN_JUSTIFY_WIDTH * $width ) {
// Set the spacing for each child
if ($line->wc > 1) {
$spacing = ($width - ($line->left + $line->w + $line->right) + $space_width) / ($line->wc - 1);
} else {
$spacing = 0;
}
$dx = 0;
foreach ($line->get_frames() as $frame) {
if (!$frame instanceof Text_Frame_Decorator) {
continue;
}
$text = $frame->get_text();
$spaces = mb_substr_count($text, " ");
$char_spacing = $style->length_in_pt($style->letter_spacing);
$_spacing = $spacing + $char_spacing;
$frame->set_position($frame->get_position("x") + $dx);
$frame->set_text_spacing($_spacing);
$dx += $spaces * $_spacing;
}
// The line (should) now occupy the entire width
$line->w = $width;
//}
}
break;
case "center":
case "centre":
foreach ($this->_frame->get_line_boxes() as $line) {
// Centre each line by moving each frame in the line by:
$dx = ($width + $line->left - $line->w - $line->right) / 2;
foreach ($line->get_frames() as $frame) {
// Block frames are not aligned by text-align
if ($frame instanceof Block_Frame_Decorator) {
continue;
}
$frame->set_position($frame->get_position("x") + $dx);
}
}
break;
}
}
