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Scripts > PHP > GD library > [class] Grafiekjes

[class] Grafiekjes

Auteur: Rubdos - 14 februari 2009 - 18:11 - Gekeurd door: Koen - Hits: 5539 - Aantal punten: 4.50 (2 stemmen)



Voorbeeldje staat er bij, even uitleggen:

Versie 1 RC 1
class graph:
-Methods:
addValue($value as array or point) -> value toevoegen, array van point, of point
parsecolor($img as resouce, $color as string) -> hexadecimale kleur naar gd-kleur
parse([$file as string]) -> zonder argumenten wordt de header image/png...
-vars:
$font: spreekt voor zich ;)
$textheight: hoeveel plaats dat de tekst krijgt
$colorPositive: positive waarden worden standaard groen, hexadecimale kleur!
$colorNegative: standaard rood
$width: een voor-zich-spreker
$height: idem...
$values: array met Points

class point($point as integer, $name as string) -> $point is het nummer, $name is een titel.
In de zelfde map als de class fontbestand uploaden!

Veel plezier, bugs te vermelden!

php source: http://scriptso...graph.phps
php script: http://scriptso....graph.php

Code:
php code - Bekijk de code zonder highlighting - Klap code in 
  1. <?php
  2. class graph{
  3. 	var $font = "ariali.ttf";
  4. 	var $textheight = 90;
  5. 	var $colorPositive  = "#2FFF00";
  6. 	var $colorNegative  = "#FF0000";
  7. 	var $width  = 400;
  8. 	var $height = 250;
  9. 	var $values = array();
  10. 	function addValue($value){
  11. 		if(is_array($value)){
  12. 			for($i=0;$i<count($value);$i++) $this->values[] = $value[$i];
  13. 		}else{
  14. 			$values[] = $value;
  15. 		}
  16. 	}
  17. 	function parsecolor($img,$color){
  18. 		$hex = ereg_replace("#", "", $color);
  19. 		$color = array();
  20. 		$color['r'] = hexdec(substr($hex, 0, 2));
  21. 		$color['g'] = hexdec(substr($hex, 2, 2));
  22. 		$color['b'] = hexdec(substr($hex, 4, 2));
  23. 		return imagecolorallocate($img,$color['r'],$color['g'],$color['b']);
  24. 	}
  25. 	function parse($file = false){
  26. 		$width = $this->width;
  27. 		$height = $this->height;
  28. 		$img = imagecreate($width,$height);
  29. 		$bg  = imagecolorallocate($img,255,255,255);
  30. 		$clr = $this->parsecolor($img,$this->colorPositive);
  31. 		$clrneg = $this->parsecolor($img,$this->colorNegative);
  32. 		$barwidth = (($width - 40) / count($this->values)) - ( (($width - 40) /  count($this->values)) / 4 * 3 );
  33. 		$space = ( (($width - 40) /  count($this->values)) / 4 * 3 );
  34. 		$graphspace = $height - $this->textheight;
  35. 		$highest = 1;
  36. 		$lowest = 0;
  37. 		foreach($this->values as $key => $value){ //hogerlager?
  38. 			if($highest < $value->point){
  39. 				$highest = $value->point;
  40. 			}
  41. 			if($lowest > $value->point){
  42. 				$lowest = $value->point;
  43. 			}
  44. 		}
  45. 		$highest += 1;
  46. 		$lowest += -1;
  47. 		$res = ($graphspace / ($highest + abs($lowest)));
  48. 		$nulpoint = ($highest * $res + abs($lowest * $res)) + $lowest * $res;
  49. 		$res2 = round($res);
  50. 		$aantlijntjes = ($highest + abs($lowest));
  51. 		if($res < 10){
  52. 			$mod = 10 - $res;
  53. 		}else{
  54. 			$mod = 1;
  55. 		}
  56. 		for($i = 0;$i <= $aantlijntjes + 1;$i++){ //lijntjes tekenen, met de nummertjes ervoor
  57. 			if((($i % $mod) == 1) OR ($highest - $i) == 0){
  58. 				$x1 = 20;
  59. 				$y1 = ($i * $res);
  60. 				$x2 = $width - 2;
  61. 				$y2 = ($i * $res);
  62. 				imagestring($img,1,1,$y1-2,$highest - $i,$this->parsecolor($img,"#CACACA"));
  63. 				if(($highest - $i)==0){
  64. 					imageline($img,$x1,$y1,$x2,$y2, $this->parsecolor($img,"#000000"));
  65. 					imagestring($img,1,1,$y1-2,$highest - $i,$this->parsecolor($img,"#000000"));
  66. 				}else{
  67. 					imageline($img,$x1,$y1,$x2,$y2, $this->parsecolor($img,"#CACACA"));
  68. 					imagestring($img,1,1,$y1-2,$highest - $i,$this->parsecolor($img,"#CACACA"));
  69. 				}
  70. 			}
  71. 		}
  72. 		foreach($this->values as $key => $value){
  73. 			$x1 = ($space / 2 + 40) + ($key * $barwidth) + ($key * $space);
  74. 			if($value->point>0){
  75. 				$y1 = $nulpoint - 1;
  76. 				$currcol = $clr;
  77. 			}else{
  78. 				$y1 = $nulpoint + 1;
  79. 				$currcol = $clrneg;
  80. 			}
  81.  
  82. 			$x2 = ($space / 2 + 40) + ($key * $barwidth) + ($key * $space) + $barwidth;
  83. 			$y2 = $nulpoint - ($value->point * $res);
  84. 			imagefilledrectangle($img,$x1,$y1,$x2,$y2,$currcol);
  85. 			$textpoints = imagettfbbox(12,45,$this->font,$value->name);
  86. 			$textx = ($x1 + ($barwidth/2)) - ($textpoints[4] - $textpoints[0]);
  87. 			$texty = ($graphspace + 5) - ($textpoints[5] - $textpoints[1]);
  88. 			imagettftext($img,12,45,$textx,$texty,$this->parsecolor($img,"#CACACA"),$this->font,$value->name);
  89. 		}
  90. 		if($file){
  91. 			imagepng($img,$file);
  92. 		}else{
  93. 			header("content-type: image/png");
  94. 			imagepng($img);
  95. 		}
  96. 	}
  97. }
  98. class point{
  99. 	var $point;
  100. 	var $name;
  101. 	function __construct($point,$name){
  102. 		$this->point = $point;
  103. 		$this->name  = $name;
  104. 	}
  105. }
  106. //VOORBEELD:
  107. $gr = new graph();
  108. $gr->addValue( array(new point(-23.5,"Juni"), new point(25,"Juli"), new point(40,"Augustus"), new point(-20,"September"), new point(23,"Oktober"), new point(21,"November") ) );
  109. $gr->parse();
  110. ?>
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