function position(AbstractFrameDecorator $frame)
{
$style = $frame->get_style();
$cb = $frame->get_containing_block();
$p = $frame->find_block_parent();
if ($p) {
$float = $style->float;
if (!$float || $float === "none") {
$p->add_line(true);
}
$y = $p->get_current_line_box()->y;
} else {
$y = $cb["y"];
}
$x = $cb["x"];
// Relative positionning
if ($style->position === "relative") {
$top = $style->length_in_pt($style->top, $cb["h"]);
//$right = $style->length_in_pt($style->right, $cb["w"]);
//$bottom = $style->length_in_pt($style->bottom, $cb["h"]);
$left = $style->length_in_pt($style->left, $cb["w"]);
$x += $left;
$y += $top;
}
$frame->set_position($x, $y);
}
function position(AbstractFrameDecorator $frame)
{
$cb = $frame->get_containing_block();
$p = $frame->get_prev_sibling();
if ($p) {
$y = $p->get_position("y") + $p->get_margin_height();
} else {
$y = $cb["y"];
}
$frame->set_position($cb["x"], $y);
}
function position(AbstractFrameDecorator $frame)
{
// Bullets & friends are positioned an absolute distance to the left of
// the content edge of their parent element
$cb = $frame->get_containing_block();
// Note: this differs from most frames in that we must position
// ourselves after determining our width
$x = $cb["x"] - $frame->get_width();
$p = $frame->find_block_parent();
$y = $p->get_current_line_box()->y;
// This is a bit of a hack...
$n = $frame->get_next_sibling();
if ($n) {
$style = $n->get_style();
$line_height = $style->length_in_pt($style->line_height, $style->get_font_size());
$offset = $style->length_in_pt($line_height, $n->get_containing_block("h")) - $frame->get_height();
$y += $offset / 2;
}
// Now the position is the left top of the block which should be marked with the bullet.
// We tried to find out the y of the start of the first text character within the block.
// But the top margin/padding does not fit, neither from this nor from the next sibling
// The "bit of a hack" above does not work also.
// Instead let's position the bullet vertically centered to the block which should be marked.
// But for get_next_sibling() the get_containing_block is all zero, and for find_block_parent()
// the get_containing_block is paper width and the entire list as height.
// if ($p) {
// //$cb = $n->get_containing_block();
// $cb = $p->get_containing_block();
// $y += $cb["h"]/2;
// print 'cb:'.$cb["x"].':'.$cb["y"].':'.$cb["w"].':'.$cb["h"].':';
// }
// Todo:
// For now give up on the above. Use Guesswork with font y-pos in the middle of the line spacing
/*$style = $p->get_style();
$font_size = $style->get_font_size();
$line_height = $style->length_in_pt($style->line_height, $font_size);
$y += ($line_height - $font_size) / 2; */
//Position is x-end y-top of character position of the bullet.
$frame->set_position($x, $y);
}
function position(AbstractFrameDecorator $frame)
{
$style = $frame->get_style();
$p = $frame->find_positionned_parent();
list($x, $y, $w, $h) = $frame->get_containing_block();
$top = $style->length_in_pt($style->top, $h);
$right = $style->length_in_pt($style->right, $w);
$bottom = $style->length_in_pt($style->bottom, $h);
$left = $style->length_in_pt($style->left, $w);
if ($p && !($left === "auto" && $right === "auto")) {
// Get the parent's padding box (see http://www.w3.org/TR/CSS21/visuren.html#propdef-top)
list($x, $y, $w, $h) = $p->get_padding_box();
}
list($width, $height) = array($frame->get_margin_width(), $frame->get_margin_height());
$orig_style = $frame->get_original_style();
$orig_width = $orig_style->width;
$orig_height = $orig_style->height;
/****************************
*
* Width auto:
* ____________| left=auto | left=fixed |
* right=auto | A | B |
* right=fixed | C | D |
*
* Width fixed:
* ____________| left=auto | left=fixed |
* right=auto | E | F |
* right=fixed | G | H |
*****************************/
if ($left === "auto") {
if ($right === "auto") {
// A or E - Keep the frame at the same position
$x = $x + $frame->find_block_parent()->get_current_line_box()->w;
} else {
if ($orig_width === "auto") {
// C
$x += $w - $width - $right;
} else {
// G
$x += $w - $width - $right;
}
}
} else {
if ($right === "auto") {
// B or F
$x += $left;
} else {
if ($orig_width === "auto") {
// D - TODO change width
$x += $left;
} else {
// H - Everything is fixed: left + width win
$x += $left;
}
}
}
// The same vertically
if ($top === "auto") {
if ($bottom === "auto") {
// A or E - Keep the frame at the same position
$y = $frame->find_block_parent()->get_current_line_box()->y;
} else {
if ($orig_height === "auto") {
// C
$y += $h - $height - $bottom;
} else {
// G
$y += $h - $height - $bottom;
}
}
} else {
if ($bottom === "auto") {
// B or F
$y += $top;
} else {
if ($orig_height === "auto") {
// D - TODO change height
$y += $top;
} else {
// H - Everything is fixed: top + height win
$y += $top;
}
}
}
$frame->set_position($x, $y);
}
