Subversion-Projekte lars-tiefland.php_share

<?php

// $Header: /cvsroot/html2ps/box.list-item.php,v 1.34 2006/09/07 18:38:12 Konstantin Exp $

class ListItemBox extends BlockBox {

  var $size;

  function &create(&$root, &$pipeline) {

    $box = new ListItemBox($root, $pipeline);

    $box->readCSS($pipeline->get_current_css_state());

    /**

     * Create text box containing item number

     */

    $css_state =& $pipeline->get_current_css_state();

    $css_state->pushState();

    //    $css_state->set_property(CSS_COLOR, CSSColor::parse('transparent'));

    $list_style = $css_state->get_property(CSS_LIST_STYLE);

    $box->str_number_box = TextBox::create(CSSListStyleType::format_number($list_style->type,

                                                                           $css_state->get_property(CSS_HTML2PS_LIST_COUNTER)).". ",

                                            'iso-8859-1',

                                            $pipeline);

    $box->str_number_box->readCSS($pipeline->get_current_css_state());

    $box->str_number_box->baseline = $box->str_number_box->default_baseline;

    $css_state->popState();

    /**

     * Create nested items

     */

    $box->create_content($root, $pipeline);

    return $box;

  }

  function readCSS(&$state) {

    parent::readCSS($state);

    $this->_readCSS($state,

                    array(CSS_LIST_STYLE));

    // Pseudo-CSS properties

    // '-list-counter'

    // increase counter value

    $value = $state->get_property(CSS_HTML2PS_LIST_COUNTER) + 1;

    $state->set_property(CSS_HTML2PS_LIST_COUNTER, $value);

    $state->set_property_on_level(CSS_HTML2PS_LIST_COUNTER, CSS_PROPERTY_LEVEL_PARENT, $value);

    // open the marker image if specified

    $list_style = $this->get_css_property(CSS_LIST_STYLE);

    if (!$list_style->image->is_default()) {

      $this->marker_image = new ImgBox($list_style->image->_image);

      $state->pushDefaultState();

      $this->marker_image->readCSS($state);

      $state->popState();

      $this->marker_image->_setupSize();

    } else {

      $this->marker_image = null;

    };

  }

  function ListItemBox(&$root, &$pipeline) {

    // Call parent constructor

    $this->BlockBox($root);

  }

  function reflow(&$parent, &$context) {

    $list_style = $this->get_css_property(CSS_LIST_STYLE);

    // If list-style-position is inside, we'll need to move marker box inside the

    // list-item box and offset all content by its size;

    if ($list_style->position === LSP_INSIDE) {

      // Add marker box width to text-indent value

      $this->_additional_text_indent = $this->get_marker_box_width();

    };

    // Procees with normal block box flow algorithm

    BlockBox::reflow($parent, $context);

  }

  function reflow_text(&$driver) {

    if (is_null($this->str_number_box->reflow_text($driver))) {

      return null;

    };

    return GenericContainerBox::reflow_text($driver);

  }

  function show(&$viewport) {

    // draw generic block box

    if (is_null(BlockBox::show($viewport))) {

      return null;

    };

    // Draw marker

    /**

     * Determine the marker box base X coordinate

     * If possible, the marker box should be drawn immediately to the left of the first word in this

     * box; this means that marker should be tied to the first text box, not to the left

     * edge of the list block box

     */

    $child = $this->get_first_data();

    if (is_null($child)) {

      $x = $this->get_left();

      $list_style = $this->get_css_property(CSS_LIST_STYLE);

      // If list-style-position is inside, we'll need to move marker box inside the

      // list-item box and offset all content by its size;

      if ($list_style->position === LSP_INSIDE) {

        $x += $this->get_marker_box_width();

      };

    } else {

      $x = $child->get_left();

    };

    // Determine the base Y coordinate of marker box

    $element = $this->get_first_data();

    if ($element) {

      $y = $element->get_top() - $element->default_baseline;

    } else {

      $y = $this->get_top();

    }

    if (!is_null($this->marker_image)) {

      $this->mb_image($viewport, $x, $y);

    } else {

      $list_style = $this->get_css_property(CSS_LIST_STYLE);

      switch ($list_style->type) {

      case LST_NONE:

        // No marker at all

        break;

      case LST_DISC:

        $this->mb_disc($viewport, $x, $y);

        break;

      case LST_CIRCLE:

        $this->mb_circle($viewport, $x, $y);

        break;

      case LST_SQUARE:

        $this->mb_square($viewport, $x, $y);

        break;

      default:

        $this->mb_string($viewport, $x, $y);

        break;

      }

    };

    return true;

  }

  function get_marker_box_width() {

    $list_style = $this->get_css_property(CSS_LIST_STYLE);

    switch ($list_style->type) {

    case LST_NONE:

      // no marker box will be rendered at all

      return 0;

    case LST_DISC:

    case LST_CIRCLE:

    case LST_SQUARE:

      //  simple graphic marker

      $font = $this->get_css_property(CSS_FONT);

      return $font->size->getPoints();

    default:

      // string marker. Return the width of the marker text

      return $this->str_number_box->get_full_width();

    };

  }

  function mb_string(&$viewport, $x, $y) {

    $this->str_number_box->put_top($y + $this->str_number_box->default_baseline);

    $this->str_number_box->put_left($x - $this->str_number_box->get_full_width());

    $this->str_number_box->show($viewport);

  }

  function mb_disc(&$viewport, $x, $y) {

    $color = $this->get_css_property(CSS_COLOR);

    $color->apply($viewport);

    $font = $this->get_css_property(CSS_FONT);

    $viewport->circle( $x - $font->size->getPoints()*0.5, $y + $font->size->getPoints()*0.4*HEIGHT_KOEFF, $font->size->getPoints() * BULLET_SIZE_KOEFF);

    $viewport->fill();

  }

  function mb_circle(&$viewport, $x, $y) {

    $color = $this->get_css_property(CSS_COLOR);

    $color->apply($viewport);

    $viewport->setlinewidth(0.1);

    $font = $this->get_css_property(CSS_FONT);

    $viewport->circle( $x - $font->size->getPoints()*0.5, $y + $font->size->getPoints()*0.4*HEIGHT_KOEFF, $font->size->getPoints() * BULLET_SIZE_KOEFF);

    $viewport->stroke();

  }

  function mb_square(&$viewport, $x, $y) {

    $color = $this->get_css_property(CSS_COLOR);

    $color->apply($viewport);

    $font = $this->get_css_property(CSS_FONT);

    $viewport->rect($x - $font->size->getPoints()*0.512, $y + $font->size->getPoints()*0.3*HEIGHT_KOEFF, $font->size->getPoints() * 0.25, $font->size->getPoints() * 0.25);

    $viewport->fill();

  }

  function mb_image(&$viewport, $x, $y) {

    $font = $this->get_css_property(CSS_FONT);

    $imagebox =& $this->marker_image;

    $imagebox->moveto($x - $font->size->getPoints()*0.5 - $imagebox->get_width()/2,

                      $y + $font->size->getPoints()*0.4*HEIGHT_KOEFF + $imagebox->get_height()/2);

    $imagebox->show($viewport);

  }

  function isBlockLevel() {

    return true;

  }

}

?>