Viewing file:  ListBullet.php (6.93 KB) -rw-r--r--
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<?php
/**
* @package dompdf
* @link https://github.com/dompdf/dompdf
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
namespace Dompdf\Renderer;
use Dompdf\Helpers;
use Dompdf\Frame;
use Dompdf\FrameDecorator\ListBullet as ListBulletFrameDecorator;
use Dompdf\FrameDecorator\ListBulletImage;
use Dompdf\Image\Cache;
/**
* Renders list bullets
*
* @package dompdf
*/
class ListBullet extends AbstractRenderer
{
/**
* @param $type
* @return mixed|string
*/
static function get_counter_chars($type)
{
static $cache = [];
if (isset($cache[$type])) {
return $cache[$type];
}
$uppercase = false;
$text = "";
switch ($type) {
case "decimal-leading-zero":
case "decimal":
case "1":
return "0123456789";
case "upper-alpha":
case "upper-latin":
case "A":
$uppercase = true;
case "lower-alpha":
case "lower-latin":
case "a":
$text = "abcdefghijklmnopqrstuvwxyz";
break;
case "upper-roman":
case "I":
$uppercase = true;
case "lower-roman":
case "i":
$text = "ivxlcdm";
break;
case "lower-greek":
for ($i = 0; $i < 24; $i++) {
$text .= Helpers::unichr($i + 944);
}
break;
}
if ($uppercase) {
$text = strtoupper($text);
}
return $cache[$type] = "$text.";
}
/**
* @param int $n
* @param string $type
* @param int|null $pad
*
* @return string
*/
private function make_counter($n, $type, $pad = null)
{
$n = intval($n);
$text = "";
$uppercase = false;
switch ($type) {
case "decimal-leading-zero":
case "decimal":
case "1":
if ($pad) {
$text = str_pad($n, $pad, "0", STR_PAD_LEFT);
} else {
$text = $n;
}
break;
case "upper-alpha":
case "upper-latin":
case "A":
$uppercase = true;
case "lower-alpha":
case "lower-latin":
case "a":
$text = chr((($n - 1) % 26) + ord('a'));
break;
case "upper-roman":
case "I":
$uppercase = true;
case "lower-roman":
case "i":
$text = Helpers::dec2roman($n);
break;
case "lower-greek":
$text = Helpers::unichr($n + 944);
break;
}
if ($uppercase) {
$text = strtoupper($text);
}
return "$text.";
}
/**
* @param ListBulletFrameDecorator $frame
*/
function render(Frame $frame)
{
$li = $frame->get_parent();
$style = $frame->get_style();
$this->_set_opacity($frame->get_opacity($style->opacity));
// Don't render bullets twice if the list item was split
if ($li->is_split_off) {
return;
}
$font_family = $style->font_family;
$font_size = $style->font_size;
$baseline = $this->_canvas->get_font_baseline($font_family, $font_size);
// Handle list-style-image
// If list style image is requested but missing, fall back to predefined types
if ($frame instanceof ListBulletImage && !Cache::is_broken($img = $frame->get_image_url())) {
[$x, $y] = $frame->get_position();
$w = $frame->get_width();
$h = $frame->get_height();
$y += $baseline - $h;
$this->_canvas->image($img, $x, $y, $w, $h);
} else {
$bullet_style = $style->list_style_type;
switch ($bullet_style) {
default:
case "disc":
case "circle":
[$x, $y] = $frame->get_position();
$offset = $font_size * ListBulletFrameDecorator::BULLET_OFFSET;
$r = ($font_size * ListBulletFrameDecorator::BULLET_SIZE) / 2;
$x += $r;
$y += $baseline - $r - $offset;
$o = $font_size * ListBulletFrameDecorator::BULLET_THICKNESS;
$this->_canvas->circle($x, $y, $r, $style->color, $o, null, $bullet_style !== "circle");
break;
case "square":
[$x, $y] = $frame->get_position();
$offset = $font_size * ListBulletFrameDecorator::BULLET_OFFSET;
$w = $font_size * ListBulletFrameDecorator::BULLET_SIZE;
$y += $baseline - $w - $offset;
$this->_canvas->filled_rectangle($x, $y, $w, $w, $style->color);
break;
case "decimal-leading-zero":
case "decimal":
case "lower-alpha":
case "lower-latin":
case "lower-roman":
case "lower-greek":
case "upper-alpha":
case "upper-latin":
case "upper-roman":
case "1": // HTML 4.0 compatibility
case "a":
case "i":
case "A":
case "I":
$pad = null;
if ($bullet_style === "decimal-leading-zero") {
$pad = strlen($li->get_parent()->get_node()->getAttribute("dompdf-children-count"));
}
$node = $frame->get_node();
if (!$node->hasAttribute("dompdf-counter")) {
return;
}
$index = $node->getAttribute("dompdf-counter");
$text = $this->make_counter($index, $bullet_style, $pad);
if (trim($text) === "") {
return;
}
$word_spacing = $style->word_spacing;
$letter_spacing = $style->letter_spacing;
$text_width = $this->_dompdf->getFontMetrics()->getTextWidth($text, $font_family, $font_size, $word_spacing, $letter_spacing);
[$x, $y] = $frame->get_position();
// Correct for static frame width applied by positioner
$x += $frame->get_width() - $text_width;
$this->_canvas->text($x, $y, $text,
$font_family, $font_size,
$style->color, $word_spacing, $letter_spacing);
case "none":
break;
}
}
$id = $frame->get_node()->getAttribute("id");
if (strlen($id) > 0) {
$this->_canvas->add_named_dest($id);
}
}
}
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