<?php
  /**
   * DOMPDF - PHP5 HTML to PDF renderer
   *
   * File: $RCSfile: inline_renderer.cls.php,v $
   * Created on: 2004-06-30
   *
   * 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: inline_renderer.cls.php 332 2010-11-27 14:06:34Z fabien.menager $ */
  
  /**
   * Renders inline frames
   *
   * @access private
   * @package dompdf
   */
  class Inline_Renderer extends Abstract_Renderer {
    
    //........................................................................
  
    function render(Frame $frame) {
      $style = $frame->get_style();
  
      if ( !$frame->get_first_child() )
        return; // No children, no service
      
      // Draw the left border if applicable
      $bp = $style->get_border_properties();
      $widths = array($style->length_in_pt($bp["top"]["width"]),
                      $style->length_in_pt($bp["right"]["width"]),
                      $style->length_in_pt($bp["bottom"]["width"]),
                      $style->length_in_pt($bp["left"]["width"]));
  
      // Draw the background & border behind each child.  To do this we need
      // to figure out just how much space each child takes:
      list($x, $y) = $frame->get_first_child()->get_position();
      $w = null;
      $h = 0;
  //     $x += $widths[3];
  //     $y += $widths[0];
      
      $this->_set_opacity( $frame->get_opacity( $style->opacity ) );
      
      $first_row = true;
  
      foreach ($frame->get_children() as $child) {
        list($child_x, $child_y, $child_w, $child_h) = $child->get_padding_box();
        
        if ( !is_null($w) && $child_x < $x + $w ) {
          //This branch seems to be supposed to being called on the first part
          //of an inline html element, and the part after the if clause for the
          //parts after a line break.
          //But because $w initially mostly is 0, and gets updated only on the next
          //round, this seem to be never executed and the common close always.
  
          // The next child is on another line.  Draw the background &
          // borders on this line.
  
          // Background:
          if ( ($bg = $style->background_color) !== "transparent" )
            $this->_canvas->filled_rectangle( $x, $y, $w, $h, $bg);
  
          if ( ($url = $style->background_image) && $url !== "none" ) {
            $this->_background_image($url, $x, $y, $w, $h, $style);
          }
  
          // If this is the first row, draw the left border
          if ( $first_row ) {
  
            if ( $bp["left"]["style"] !== "none" && $bp["left"]["color"] !== "transparent" && $bp["left"]["width"] > 0 ) {
              $method = "_border_" . $bp["left"]["style"];            
              $this->$method($x, $y, $h + $widths[0] + $widths[2], $bp["left"]["color"], $widths, "left");
            }
            $first_row = false;
          }
  
          // Draw the top & bottom borders
          if ( $bp["top"]["style"] !== "none" && $bp["top"]["color"] !== "transparent" && $bp["top"]["width"] > 0 ) {
            $method = "_border_" . $bp["top"]["style"];
            $this->$method($x, $y, $w + $widths[1] + $widths[3], $bp["top"]["color"], $widths, "top");
          }
          
          if ( $bp["bottom"]["style"] !== "none" && $bp["bottom"]["color"] !== "transparent" && $bp["bottom"]["width"] > 0 ) {
            $method = "_border_" . $bp["bottom"]["style"];
            $this->$method($x, $y + $h + $widths[0] + $widths[2], $w + $widths[1] + $widths[3], $bp["bottom"]["color"], $widths, "bottom");
          }
  
          // Handle anchors & links
          if ( $frame->get_node()->nodeName === "a" ) {
            if ( $href = $frame->get_node()->getAttribute("href") )
              $this->_canvas->add_link($href, $x, $y, $w, $h);
          }
  
          $x = $child_x;
          $y = $child_y;
          $w = $child_w;
          $h = $child_h;
          continue;
        }
  
        if ( is_null($w) )
          $w = $child_w;
        else
          $w += $child_w;
        
        $h = max($h, $child_h);
      }
  
      
      // Handle the last child
      if ( ($bg = $style->background_color) !== "transparent" ) 
        $this->_canvas->filled_rectangle( $x + $widths[3], $y + $widths[0], $w, $h, $bg);
  
      //On continuation lines (after line break) of inline elements, the style got copied.
      //But a non repeatable background image should not be repeated on the next line.
      //But removing the background image above has never an effect, and removing it below
      //removes it always, even on the initial line.
      //Need to handle it elsewhere, e.g. on certain ...clone()... usages.    
      // Repeat not given: default is Style::__construct
      // ... && (!($repeat = $style->background_repeat) || $repeat === "repeat" ...
      //different position? $this->_background_image($url, $x, $y, $w, $h, $style);
      if ( ($url = $style->background_image) && $url !== "none" )           
        $this->_background_image($url, $x + $widths[3], $y + $widths[0], $w, $h, $style);
          
      // Add the border widths
      $w += $widths[1] + $widths[3];
      $h += $widths[0] + $widths[2];
  
      // make sure the border and background start inside the left margin
      $left_margin = $style->length_in_pt($style->margin_left);
      $x += $left_margin;
  
      // If this is the first row, draw the left border too
      if ( $first_row && $bp["left"]["style"] !== "none" && $bp["left"]["color"] !== "transparent" && $widths[3] > 0 ) {
        $method = "_border_" . $bp["left"]["style"];
        $this->$method($x, $y, $h, $bp["left"]["color"], $widths, "left");
      }
      
      // Draw the top & bottom borders
      if ( $bp["top"]["style"] !== "none" && $bp["top"]["color"] !== "transparent" && $widths[0] > 0 ) {
        $method = "_border_" . $bp["top"]["style"];
        $this->$method($x, $y, $w, $bp["top"]["color"], $widths, "top");
      }
      
      if ( $bp["bottom"]["style"] !== "none" && $bp["bottom"]["color"] !== "transparent" && $widths[2] > 0 ) {
        $method = "_border_" . $bp["bottom"]["style"];
        $this->$method($x, $y + $h, $w, $bp["bottom"]["color"], $widths, "bottom");
      }
  
      //    pre_var_dump(get_class($frame->get_next_sibling()));
      //    $last_row = get_class($frame->get_next_sibling()) !== 'Inline_Frame_Decorator';
      // Draw the right border if this is the last row
      if ( $bp["right"]["style"] !== "none" && $bp["right"]["color"] !== "transparent" && $widths[1] > 0 ) {
        $method = "_border_" . $bp["right"]["style"];
        $this->$method($x + $w, $y, $h, $bp["right"]["color"], $widths, "right");
      }
  
      $node = $frame->get_node();
      
      // Handle anchors & links
      if ( $node->nodeName === "a" ) {
        if ( $name = $node->getAttribute("name") )
          $this->_canvas->add_named_dest($name);
  
        if ( $href = $node->getAttribute("href") )
          $this->_canvas->add_link($href, $x, $y, $w, $h);
      }
      
      if (DEBUG_LAYOUT && DEBUG_LAYOUT_INLINE) {
        $this->_debug_layout($child->get_border_box(), "blue");
        if (DEBUG_LAYOUT_PADDINGBOX) {
          $this->_debug_layout($child->get_padding_box(), "blue", array(0.5, 0.5));
        }
      }
    }
  }