<?php
  /**
   * DOMPDF - PHP5 HTML to PDF renderer
   *
   * File: $RCSfile: table_cell_renderer.cls.php,v $
   * Created on: 2004-06-09
   *
   * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca>
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with this library in the file LICENSE.LGPL; if not, write to the
   * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   * 02111-1307 USA
   *
   * Alternatively, you may distribute this software under the terms of the
   * PHP License, version 3.0 or later.  A copy of this license should have
   * been distributed with this file in the file LICENSE.PHP .  If this is not
   * the case, you can obtain a copy at http://www.php.net/license/3_0.txt.
   *
   * The latest version of DOMPDF might be available at:
   * http://www.dompdf.com/
   *
   * @link http://www.dompdf.com/
   * @copyright 2004 Benj Carson
   * @author Benj Carson <benjcarson@digitaljunkies.ca>
   * @package dompdf
  
   */
  
  /* $Id: table_cell_renderer.cls.php 311 2010-09-05 20:02:01Z fabien.menager $ */
  
  /**
   * Renders table cells
   *
   * @access private
   * @package dompdf
   */
  class Table_Cell_Renderer extends Block_Renderer {
  
    //........................................................................
  
    function render(Frame $frame) {
      $style = $frame->get_style();
  
      $this->_set_opacity( $frame->get_opacity( $style->opacity ) );
      
      // Draw our background, border and content
      if ( ($bg = $style->background_color) !== "transparent" ) {
        list($x, $y, $w, $h) = $frame->get_padding_box();
        $this->_canvas->filled_rectangle( $x, $y, $w, $h, $bg );
      }
      else {
        list($x, $y, $w, $h) = $frame->get_padding_box();
      }
  
      if ( ($url = $style->background_image) && $url !== "none" ) {
        $this->_background_image($url, $x, $y, $w, $h, $style);
      }
  
      if ( $style->border_collapse !== "collapse" ) {
        $this->_render_border($frame, "bevel");
        $this->_render_outline($frame, "bevel");
        return;
      }
  
      // The collapsed case is slightly complicated...
      // @todo Add support for outlines here
  
      $cellmap = Table_Frame_Decorator::find_parent_table($frame)->get_cellmap();
      $cells = $cellmap->get_spanned_cells($frame);
      $num_rows = $cellmap->get_num_rows();
      $num_cols = $cellmap->get_num_cols();
  
      // Determine the top row spanned by this cell
      $i = $cells["rows"][0];
      $top_row = $cellmap->get_row($i);
  
      // Determine if this cell borders on the bottom of the table.  If so,
      // then we draw its bottom border.  Otherwise the next row down will
      // draw its top border instead.
      if (in_array( $num_rows - 1, $cells["rows"])) {
        $draw_bottom = true;
        $bottom_row = $cellmap->get_row($num_rows - 1);
      } else
        $draw_bottom = false;
  
  
      // Draw the horizontal borders
      foreach ( $cells["columns"] as $j ) {
        $bp = $cellmap->get_border_properties($i, $j);
  
        $y = $top_row["y"] - $bp["top"]["width"] / 2;
  
        $col = $cellmap->get_column($j);
        $x = $col["x"] - $bp["left"]["width"] / 2;
        $w = $col["used-width"] + ($bp["left"]["width"] + $bp["right"]["width"] ) / 2;
  
        if ( $bp["top"]["style"] !== "none" && $bp["top"]["width"] > 0 ) {
          $widths = array($bp["top"]["width"],
                          $bp["right"]["width"],
                          $bp["bottom"]["width"],
                          $bp["left"]["width"]);
          $method = "_border_". $bp["top"]["style"];
          $this->$method($x, $y, $w, $bp["top"]["color"], $widths, "top", "square");
        }
  
        if ( $draw_bottom ) {
          $bp = $cellmap->get_border_properties($num_rows - 1, $j);
          if ( $bp["bottom"]["style"] === "none" || $bp["bottom"]["width"] <= 0 )
            continue;
  
          $y = $bottom_row["y"] + $bottom_row["height"] + $bp["bottom"]["width"] / 2;
  
          $widths = array($bp["top"]["width"],
                          $bp["right"]["width"],
                          $bp["bottom"]["width"],
                          $bp["left"]["width"]);
          $method = "_border_". $bp["bottom"]["style"];
          $this->$method($x, $y, $w, $bp["bottom"]["color"], $widths, "bottom", "square");
  
        }
      }
  
      $j = $cells["columns"][0];
  
      $left_col = $cellmap->get_column($j);
  
      if (in_array($num_cols - 1, $cells["columns"])) {
        $draw_right = true;
        $right_col = $cellmap->get_column($num_cols - 1);
      } else
        $draw_right = false;
  
      // Draw the vertical borders
      foreach ( $cells["rows"] as $i ) {
        $bp = $cellmap->get_border_properties($i, $j);
  
        $x = $left_col["x"] - $bp["left"]["width"] / 2;
  
        $row = $cellmap->get_row($i);
  
        $y = $row["y"] - $bp["top"]["width"] / 2;
        $h = $row["height"] + ($bp["top"]["width"] + $bp["bottom"]["width"])/ 2;
  
        if ( $bp["left"]["style"] !== "none" && $bp["left"]["width"] > 0 ) {
  
          $widths = array($bp["top"]["width"],
                          $bp["right"]["width"],
                          $bp["bottom"]["width"],
                          $bp["left"]["width"]);
  
          $method = "_border_" . $bp["left"]["style"];
          $this->$method($x, $y, $h, $bp["left"]["color"], $widths, "left", "square");
        }
  
        if ( $draw_right ) {
          $bp = $cellmap->get_border_properties($i, $num_cols - 1);
          if ( $bp["right"]["style"] === "none" || $bp["right"]["width"] <= 0 )
            continue;
  
          $x = $right_col["x"] + $right_col["used-width"] + $bp["right"]["width"] / 2;
  
          $widths = array($bp["top"]["width"],
                          $bp["right"]["width"],
                          $bp["bottom"]["width"],
                          $bp["left"]["width"]);
  
          $method = "_border_" . $bp["right"]["style"];
          $this->$method($x, $y, $h, $bp["right"]["color"], $widths, "right", "square");
  
        }
      }
  
    }
  }