php打造智能化的柱状图程序，用于报表等

<?php 
/*** 
 * @project bar graph program 
 * @license gpl 
 * @package 
 * @file grapbar.php 
 * @date 2007-4-3 
 * @version 1.0 
 * @last modified 
  
 * 定义 柱状图（柱形图） 类 
 * 
 * 注意，使用前请确保字体路径存在并允许访问，如果出错，还要检查在php.ini配置中的open_basedir项，如果没此路径请添加，或在程序中设置包含 
 * 
 * 智能化的柱状图程序，用于报表等 
 * 
 ***/ 
  
define("default_font_path", "c:/windows/fonts/simhei.ttf"); 
class singlebar 
{ 
 private $_x; 
 private $_y; 
 private $_h; 
 public $_l = 50; 
 private $_w = null; 
 private $_srcpoints = array(); 
 private $_points = array(); 
  
 public function __construct($x, $y, $h, $l = 50, $w = null) 
 { 
 $this->_x = $x; 
 $this->_y = $y; 
 $this->_h = $h; 
 $this->_l = $l; 
 $this->_w = $w; 
 $this->_srcpoints = $this->getsrcpoints(); 
 $this->_points = $this->getpoints(); 
 } 
  
 public function getsrcpoints() 
 { 
 return array( 
  array($this->_x         , $this->_y), 
  array($this->_x+$this->_l    , $this->_y), 
  array($this->_x+(1.35*$this->_l), $this->_y-(0.35*$this->_l)), 
  array($this->_x+(0.35*$this->_l), $this->_y-(0.35*$this->_l)), 
  array($this->_x         , $this->_y+$this->_h), 
  array($this->_x+$this->_l    , $this->_y+$this->_h), 
  array($this->_x+(1.35*$this->_l), $this->_y+$this->_h-(0.35*$this->_l)) 
 ); 
 } 
  
 public function getpoints() 
 { 
 $points = array(); 
 foreach($this->_srcpoints as $key => $val) 
 { 
  $points[] = $val[0]; 
  $points[] = $val[1]; 
 } 
 return $points; 
 } 
  
 public function gettoppoints() 
 { 
 return array_slice($this->_points, 0, 8); //顶坐标 
 } 
  
 public function getbelowpoints() 
 { 
 return array_merge(array_slice($this->_points, 0, 2), array_slice($this->_points, 8, 4), array_slice($this->_points, 2, 2)); //下坐标 
 } 
  
 public function getrightsidepoints() 
 { 
 return array_merge(array_slice($this->_points, 2, 2), array_slice($this->_points, 10, 4), array_slice($this->_points, 4, 2)); //右侧坐标 
 } 
  
 public function draw($image, $topcolor, $belowcolor, $sidecolor, $bordercolor = null, $type = 'left') 
 { 
 if (is_null($bordercolor)) 
 { 
  $bordercolor = 0xcccccc; 
 } 
   
 $top_rgb = $this->getrgb($topcolor); 
 $below_rgb = $this->getrgb($belowcolor); 
 $side_rgb = $this->getrgb($sidecolor); 
 $top_color = imagecolorallocate($image, $top_rgb['r'], $top_rgb['g'], $top_rgb['b']); 
 $below_color = imagecolorallocate($image, $below_rgb['r'], $below_rgb['g'], $below_rgb['b']); 
 $side_color = imagecolorallocate($image, $side_rgb['r'], $side_rgb['g'], $side_rgb['b']); 
   
 imagefilledpolygon($image, $this->gettoppoints(), 4, $top_color); //画顶面 
 imagepolygon($image, $this->gettoppoints(), 4, $bordercolor); //画顶面边线 
   
 imagefilledpolygon($image, $this->getbelowpoints(), 4, $below_color); //画下面 
 imagepolygon($image, $this->getbelowpoints(), 4, $bordercolor); //画下面边线 
   
 if ($type == 'left') 
 { 
  imagefilledpolygon($image, $this->getrightsidepoints(), 4, $side_color); //画右侧面 
  imagepolygon($image, $this->getrightsidepoints(), 4, $bordercolor); //画侧面边线 
 }  
 } 
  
 public function getrgb($color) 
 { 
 $ar = array(); 
 $color = hexdec($color); 
 $ar['r'] = ($color>>16) & 0xff; 
 $ar['g'] = ($color>>8) & 0xff; 
 $ar['b'] = ($color) & 0xff; 
 return $ar; 
 } 
} 
  
class bar 
{ 
 private $_w; 
 private $_h; 
 private $_bgcolor = "ffffff"; 
 private $_barheights = array(); 
 private $_bartexts = array(); 
 private $_barcolors = array(); 
 public $_title; 
 public $_paddingtop = 30; 
 public $_paddingbottom = 100; 
 public $_paddingleft = 45; 
 public $_paddingright = 2; 
 public $_barl = 50; 
 public $image; 
  
 public function __construct($imgw, $imgh, $barheights, $bartexts = null, $barcolors = null) 
 { 
 $this->_w = $imgw; 
 $this->_h = $imgh; 
 $this->_barheights = $barheights; 
 $this->_bartexts  = $bartexts; 
 $this->_barcolors = $barcolors; 
 $this->_paddingbottom = $this->resetpaddingbottom(); 
 $this->_h = $this->resetheight(); 
 $this->image = imagecreatetruecolor($this->_w, $this->_h); 
 } 
  
 public function stroke() 
 { 
 $this->drawbg(); 
 $this->drawbars(); 
 $this->drawtitle(); 
 $this->drawlables(); 
 ob_start(); 
 //header("content-type: image/png"); 
 //imagepng($this->image); 
 header("content-type: " . image_type_to_mime_type(imagetype_jpeg)); 
    imagejpeg($this->image); 
 imagedestroy($this->image); 
 } 
  
 public function drawbg() 
 { 
 $img_w = $this->_w; 
 $img_h = $this->_h; 
 $paddingtop  = $this->_paddingtop; 
 $paddingbottom = $this->_paddingbottom; 
 $paddingleft  = $this->_paddingleft; 
 $paddingright = $this->_paddingright; 
 $rgb = $this->getrgb($this->_bgcolor); 
 $bg = imagecolorallocate($this->image,$rgb['r'], $rgb['g'], $rgb['b']); 
 imagefilledrectangle($this->image, 0, 0, $img_w, $img_h, $bg); 
 $side_bg = imagecolorallocatealpha($this->image, 220, 220, 220, 75); 
 $side_bg2 = imagecolorallocate($this->image, 220, 220, 220); 
 $border_color = imagecolorallocate($this->image, 190, 190, 190); 
 $line_color = imagecolorallocate($this->image, 236, 236, 236); 
 $dial_color = imagecolorallocate($this->image, 131, 131, 131); 
   
 $x1 = $paddingleft; 
 $y1 = $paddingtop; 
 $x2 = $img_w - $paddingright; 
 $y2 = $img_h - $paddingbottom; 
 imagerectangle($this->image, $x1, $y1, $x2, $y2, $border_color); 
 imagefilledpolygon($this->image, array($x1-5,$y1+10, $x1-5,$y2+10, $x1,$y2, $x1,$y1), 4, $side_bg); 
    imagepolygon($this->image, array($x1-5,$y1+10, $x1-5,$y2+10, $x1,$y2, $x1,$y1), 4, $border_color); 
 imagefilledpolygon($this->image, array($x1-5,$y2+10, $x2-5,$y2+10, $x2,$y2, $x1,$y2), 4, $side_bg); 
    imagepolygon($this->image, array($x1-5,$y2+10, $x2-5,$y2+10, $x2,$y2, $x1,$y2), 4, $border_color); 
 imageline($this->image, $x1, $y2, $x2, $y2, $side_bg2); 
   
 $total_h = $img_h - $paddingtop - $paddingbottom; 
 $every_h = $total_h/11; 
 for($i=1; $i<=10; $i++) 
 { 
  imageline($this->image, $x1, $y1+($every_h*$i), $x2, $y1+($every_h*$i), $line_color); //画网线 
 } 
   
 $max_h = max($this->_barheights); 
 for($i=1; $i<=10; $i++) 
 { 
  $value = $max_h - (($max_h/10)*($i-1)); 
  $value = strval($value); 
  $str_w = strlen($value)*5; 
  imageline($this->image, $x1-5-3, $y1+10+($every_h*$i), $x1-3+1, $y1+10+($every_h*$i), $dial_color); //画刻度线 
  imagestring($this->image, 3, $x1-5-3-$str_w-1, $y1+10+($every_h*$i)-5, $value, 0x000000); 
 } 
 } 
  
  
 public function drawbars() 
 { 
 $counts = count($this->_barheights); 
 if (empty($this->_barcolors)) 
 { 
  $color = $this->setcolor(); 
  $this->_barcolors = array_slice($color, 0, $counts); 
  //shuffle($this->_barcolors); 
 } 
 $every_w = ($this->_w - $this->_paddingleft - $this->_paddingright)/$counts; //每一段宽 
 $barl = $every_w; 
 $barl = ($barl > $this->_barl*1.35+6) ? $this->_barl : $barl/1.35 - 6; 
 $max_h = max($this->_barheights); 
 $ruler_h = $this->_h - $this->_paddingtop - $this->_paddingbottom; //标尺总高度 
 $stander_h = $ruler_h - ($ruler_h/11); //标尺10等分的高度 
 $i = 0; 
 foreach ($this->_barheights as $val) 
 { 
  $h = ($stander_h/$max_h)*$val; 
  $x = $this->_paddingleft + ($every_w*$i) + (($every_w - ($barl*1.35))/2);; 
  $y = $this->_h - $this->_paddingbottom + 10 - $h; 
  //$t_color = $this->_barcolors[$i]; 
  $b_color = $this->_barcolors[$i]; 
  //$s_color = $this->_barcolors[$i]; 
  
   
  $rgb = $this->getrgb($this->_barcolors[$i]); 
  $r = $rgb['r'] * 0.7; 
  $g = $rgb['g'] * 0.7; 
  $b = $rgb['b'] * 0.7; 
   
  $c1 = $r > 0 ? dechex($r) : '00'; 
  $c2 = $g > 0 ? dechex($g) : '00'; 
  $c3 = $b > 0 ? dechex($b) : '00'; 
  
  $t_color = $b_color; 
  $s_color = $c1. $c2 . $c3; 
  
  $singlebar = new singlebar($x, $y, $h, $barl); 
  $singlebar->draw($this->image, $t_color, $b_color, $s_color); 
  $i++; 
 } 
 } 
  
 public function drawtitle() 
 { 
 if (empty($this->_title)) 
 { 
  return; 
 } 
 $font = 5; 
 $font_w = imagefontwidth($font); 
 $len = strlen($this->_title); 
 $x = ($this->_w + $this->_paddingleft - $this->_paddingright)/2; 
 $x -= ($len*$font_w)/2; 
 $y = ($this->_paddingtop - $font_w)/2 + 12; 
 //imagestring($this->image, $font, $x, $y, $title, 0x000000); 
 imagettftext($this->image, 12, 0, $x, $y, 0x000000, default_font_path, $this->_title); 
 } 
  
 public function drawlables() 
 { 
 $x1 = $this->_paddingleft - 5; 
 $y1 = $this->_h - $this->_paddingbottom + 20; 
 $x2 = $this->_w - $this->_paddingright; 
 $y2 = $this->_h - 10; 
 //imagefilledrectangle($this->image, $x1, $y1, $x2, $y2, 0xffffff); 
 imagerectangle($this->image, $x1, $y1, $x2, $y2, 0x000000); 
 $space = 5; 
 $x = $x1 + 3; 
 $y = $y1 + 3; 
 foreach ($this->_bartexts as $key => $val) 
 { 
  $color = $this->_barcolors[$key]; 
  $rgb = $this->getrgb($color); 
  $bg = imagecolorallocate($this->image,$rgb['r'], $rgb['g'], $rgb['b']); 
  imagefilledrectangle($this->image, $x, $y, $x+12, $y+12, $bg); //绘12*12的矩形 
     imagerectangle($this->image, $x, $y, $x+12, $y+12, 0x000000); //绘12*12的矩形框 
  imagettftext($this->image, 12, 0, $x+12+3, $y+12, 0x000000, default_font_path, $val); 
  $x += 12 + $space + (strlen($val)*8) + $space; 
  if ($x + (strlen($val)*8) >= $this->_w - $this->_paddingleft - $this->_paddingright) 
  { 
  $x = $x1 + 3; 
  $y = $y + 12 + 3; 
  } 
 } 
 } 
  
 public function resetpaddingbottom() 
 { 
 $ruler_w = $this->_w - $this->_paddingleft - $this->_paddingright; 
 $label_w = $this->getlabletotalwidth(); 
 $lines = ceil($label_w / $ruler_w); 
 $h = 12 * $lines + (3 * ($lines + 1)) + 30; 
 return $h; 
 } 
  
 public function resetheight() 
 { 
 $padding_bottom = $this->resetpaddingbottom(); 
 if ($this->_h - $padding_bottom < 222) 
 { 
  return 222 + $padding_bottom; 
 } 
 return $this->_h; 
 } 
  
  
 public function getlabletotalwidth() 
 { 
 $counts = count($this->_bartexts); 
 $space = 5; 
 $total_len = 0; 
 foreach ($this->_bartexts as $val) 
 { 
  $total_len += strlen($val); 
 } 
   
 $tx_w = ($total_len * 9) + ((12 + 3 + $space) * $counts); 
 return $tx_w; 
 } 
  
 public function setbg($color) 
 { 
 $this->_bgcolor = $color; 
 } 
  
 public function settitle($title) 
 { 
 $this->_title = $title; 
 } 
  
 public function setcolor() 
 { 
 $ar = array('ff', '00', '33', '66', '99', 'cc'); 
 $color = array(); 
 for ($i=0; $i<6; $i++) 
 { 
  for ($j=0; $j<6; $j++) 
  { 
  for($k=0; $k<6; $k++) 
  { 
   $color[] = $ar[$i] . $ar[$j] . $ar[$k]; 
  } 
  } 
 } 
   
 $color2 = array(); 
 for ($i=1; $i<216; $i += 4) 
 { 
  $color2[] = $color[$i]; 
 } 
  
 return $color2; 
 } 
  
 public function getrgb($color) 
 { 
 $ar = array(); 
 $color = hexdec($color); 
 $ar['r'] = ($color>>16) & 0xff; 
 $ar['g'] = ($color>>8) & 0xff; 
 $ar['b'] = ($color) & 0xff; 
 return $ar; 
 } 
} 
  
/***/ 
$bar = new bar(500, 300, array(600, 300, 30, 500, 400, 250, 350, 360), array('aaaaa', 'bbbbb', 'ccccc', 'ddddd', 'eeeeee', 'ffffff', 'ggggggg', 'hhhhhhhhh')); 
$bar->settitle('打造完美柱状图!'); 
$bar->stroke(); 
/***/ 
?>