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php绘制柱状图

时间：2021-07-01 10:21:17 帮助过：24人阅读

  1. /***
  2. * @project Bar Graph Program
  3. * @license GPL
  4. * @package
  5. * @file GrapBar.php
  6. * @date 2007-4-3
  7. * @version 1.0
  8. * @last modified
  10. * 定义 柱状图（柱形图） 类
  11. *
  12. * 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
  13. *
  14. * 智能化的柱状图程序，用于报表等
  15. *
  16. ***/
  18. define("DEFAULT_FONT_PATH", "c:/windows/fonts/simhei.ttf");
  19. class SingleBar
  20. {
  21. private $_x;
  22. private $_y;
  23. private $_h;
  24. public $_l = 50;
  25. private $_w = null;
  26. private $_srcPoints = array();
  27. private $_points = array();
  29. public function __construct($x, $y, $h, $l = 50, $w = null)
  30. {
  31. $this->_x = $x;
  32. $this->_y = $y;
  33. $this->_h = $h;
  34. $this->_l = $l;
  35. $this->_w = $w;
  36. $this->_srcPoints = $this->getSrcPoints();
  37. $this->_points = $this->getPoints();
  38. }
  40. public function getSrcPoints()
  41. {
  42. return array(
  43. array($this->_x , $this->_y),
  44. array($this->_x+$this->_l , $this->_y),
  45. array($this->_x+(1.35*$this->_l), $this->_y-(0.35*$this->_l)),
  46. array($this->_x+(0.35*$this->_l), $this->_y-(0.35*$this->_l)),
  47. array($this->_x , $this->_y+$this->_h),
  48. array($this->_x+$this->_l , $this->_y+$this->_h),
  49. array($this->_x+(1.35*$this->_l), $this->_y+$this->_h-(0.35*$this->_l))
  50. );
  51. }
  53. public function getPoints()
  54. {
  55. $points = array();
  56. foreach($this->_srcPoints as $key => $val)
  57. {
  58. $points[] = $val[0];
  59. $points[] = $val[1];
  60. }
  61. return $points;
  62. }
  64. public function getTopPoints()
  65. {
  66. return array_slice($this->_points, 0, 8); //顶坐标
  67. }
  69. public function getBelowPoints()
  70. {
  71. return array_merge(array_slice($this->_points, 0, 2), array_slice($this->_points, 8, 4), array_slice($this->_points, 2, 2)); //下坐标
  72. }
  74. public function getRightSidePoints()
  75. {
  76. return array_merge(array_slice($this->_points, 2, 2), array_slice($this->_points, 10, 4), array_slice($this->_points, 4, 2)); //右侧坐标
  77. }
  79. public function draw($image, $topColor, $belowColor, $sideColor, $borderColor = null, $type = 'LEFT')
  80. {
  81. if (is_null($borderColor))
  82. {
  83. $borderColor = 0xcccccc;
  84. }
  86. $top_rgb = $this->getRGB($topColor);
  87. $below_rgb = $this->getRGB($belowColor);
  88. $side_rgb = $this->getRGB($sideColor);
  89. $top_color = imagecolorallocate($image, $top_rgb['R'], $top_rgb['G'], $top_rgb['B']);
  90. $below_color = imagecolorallocate($image, $below_rgb['R'], $below_rgb['G'], $below_rgb['B']);
  91. $side_color = imagecolorallocate($image, $side_rgb['R'], $side_rgb['G'], $side_rgb['B']);
  93. imagefilledpolygon($image, $this->getTopPoints(), 4, $top_color); //画顶面
  94. imagepolygon($image, $this->getTopPoints(), 4, $borderColor); //画顶面边线
  96. imagefilledpolygon($image, $this->getBelowPoints(), 4, $below_color); //画下面
  97. imagepolygon($image, $this->getBelowPoints(), 4, $borderColor); //画下面边线
  99. if ($type == 'LEFT')
  100. {
  101. imagefilledpolygon($image, $this->getRightSidePoints(), 4, $side_color); //画右侧面
  102. imagepolygon($image, $this->getRightSidePoints(), 4, $borderColor); //画侧面边线
  103. }
  104. }
  106. public function getRGB($color)
  107. {
  108. $ar = array();
  109. $color = hexdec($color);
  110. $ar['R'] = ($color>>16) & 0xff;
  111. $ar['G'] = ($color>>8) & 0xff;
  112. $ar['B'] = ($color) & 0xff;
  113. return $ar;
  114. }
  115. }
  117. class Bar
  118. {
  119. private $_W;
  120. private $_H;
  121. private $_bgColor = "ffffff";
  122. private $_barHeights = array();
  123. private $_barTexts = array();
  124. private $_barColors = array();
  125. public $_title;
  126. public $_paddingTop = 30;
  127. public $_paddingBottom = 100;
  128. public $_paddingLeft = 45;
  129. public $_paddingRight = 2;
  130. public $_barL = 50;
  131. public $image;
  133. public function __construct($imgW, $imgH, $barHeights, $barTexts = null, $barColors = null)
  134. {
  135. $this->_W = $imgW;
  136. $this->_H = $imgH;
  137. $this->_barHeights = $barHeights;
  138. $this->_barTexts = $barTexts;
  139. $this->_barColors = $barColors;
  140. $this->_paddingBottom = $this->resetPaddingBottom();
  141. $this->_H = $this->resetHeight();
  142. $this->image = imagecreatetruecolor($this->_W, $this->_H);
  143. }
  145. public function stroke()
  146. {
  147. $this->drawBg();
  148. $this->drawBars();
  149. $this->drawTitle();
  150. $this->drawLables();
  151. ob_start();
  152. //header("Content-type: image/png");
  153. //imagepng($this->image);
  154. header("Content-type: " . image_type_to_mime_type(IMAGETYPE_JPEG));
  155. imagejpeg($this->image);
  156. imagedestroy($this->image);
  157. }
  159. public function drawBg()
  160. {
  161. $img_w = $this->_W;
  162. $img_h = $this->_H;
  163. $paddingTop = $this->_paddingTop;
  164. $paddingBottom = $this->_paddingBottom;
  165. $paddingLeft = $this->_paddingLeft;
  166. $paddingRight = $this->_paddingRight;
  167. $rgb = $this->getRGB($this->_bgColor);
  168. $bg = imagecolorallocate($this->image,$rgb['R'], $rgb['G'], $rgb['B']);
  169. imagefilledrectangle($this->image, 0, 0, $img_w, $img_h, $bg);
  170. $side_bg = imagecolorallocatealpha($this->image, 220, 220, 220, 75);
  171. $side_bg2 = imagecolorallocate($this->image, 220, 220, 220);
  172. $border_color = imagecolorallocate($this->image, 190, 190, 190);
  173. $line_color = imagecolorallocate($this->image, 236, 236, 236);
  174. $dial_color = imagecolorallocate($this->image, 131, 131, 131);
  176. $x1 = $paddingLeft;
  177. $y1 = $paddingTop;
  178. $x2 = $img_w - $paddingRight;
  179. $y2 = $img_h - $paddingBottom;
  180. imagerectangle($this->image, $x1, $y1, $x2, $y2, $border_color);
  181. imagefilledpolygon($this->image, array($x1-5,$y1+10, $x1-5,$y2+10, $x1,$y2, $x1,$y1), 4, $side_bg);
  182. imagepolygon($this->image, array($x1-5,$y1+10, $x1-5,$y2+10, $x1,$y2, $x1,$y1), 4, $border_color);
  183. imagefilledpolygon($this->image, array($x1-5,$y2+10, $x2-5,$y2+10, $x2,$y2, $x1,$y2), 4, $side_bg);
  184. imagepolygon($this->image, array($x1-5,$y2+10, $x2-5,$y2+10, $x2,$y2, $x1,$y2), 4, $border_color);
  185. imageline($this->image, $x1, $y2, $x2, $y2, $side_bg2);
  187. $total_h = $img_h - $paddingTop - $paddingBottom;
  188. $every_h = $total_h/11;
  189. for($i=1; $i<=10; $i++)
  190. {
  191. imageline($this->image, $x1, $y1+($every_h*$i), $x2, $y1+($every_h*$i), $line_color); //画网线
  192. }
  194. $max_h = max($this->_barHeights);
  195. for($i=1; $i<=10; $i++)
  196. {
  197. $value = $max_h - (($max_h/10)*($i-1));
  198. $value = strval($value);
  199. $str_w = strlen($value)*5;
  200. imageline($this->image, $x1-5-3, $y1+10+($every_h*$i), $x1-3+1, $y1+10+($every_h*$i), $dial_color); //画刻度线
  201. imagestring($this->image, 3, $x1-5-3-$str_w-1, $y1+10+($every_h*$i)-5, $value, 0x000000);
  202. }
  203. }
  206. public function drawBars()
  207. {
  208. $counts = count($this->_barHeights);
  209. if (empty($this->_barColors))
  210. {
  211. $color = $this->setColor();
  212. $this->_barColors = array_slice($color, 0, $counts);
  213. //shuffle($this->_barColors);
  214. }
  215. $every_w = ($this->_W - $this->_paddingLeft - $this->_paddingRight)/$counts; //每一段宽
  216. $barL = $every_w;
  217. $barL = ($barL > $this->_barL*1.35+6) ? $this->_barL : $barL/1.35 - 6;
  218. $max_h = max($this->_barHeights);
  219. $ruler_h = $this->_H - $this->_paddingTop - $this->_paddingBottom; //标尺总高度
  220. $stander_h = $ruler_h - ($ruler_h/11); //标尺10等分的高度
  221. $i = 0;
  222. foreach ($this->_barHeights as $val)
  223. {
  224. $h = ($stander_h/$max_h)*$val;
  225. $x = $this->_paddingLeft + ($every_w*$i) + (($every_w - ($barL*1.35))/2);;
  226. $y = $this->_H - $this->_paddingBottom + 10 - $h;
  227. //$t_color = $this->_barColors[$i];
  228. $b_color = $this->_barColors[$i];
  229. //$s_color = $this->_barColors[$i];
  232. $rgb = $this->getRGB($this->_barColors[$i]);
  233. $R = $rgb['R'] * 0.7;
  234. $G = $rgb['G'] * 0.7;
  235. $B = $rgb['B'] * 0.7;
  237. $c1 = $R > 0 ? dechex($R) : '00';
  238. $c2 = $G > 0 ? dechex($G) : '00';
  239. $c3 = $B > 0 ? dechex($B) : '00';
  241. $t_color = $b_color;
  242. $s_color = $c1. $c2 . $c3;
  244. $SingleBar = new SingleBar($x, $y, $h, $barL);
  245. $SingleBar->draw($this->image, $t_color, $b_color, $s_color);
  246. $i++;
  247. }
  248. }
  250. public function drawTitle()
  251. {
  252. if (empty($this->_title))
  253. {
  254. return;
  255. }
  256. $font = 5;
  257. $font_w = imagefontwidth($font);
  258. $len = strlen($this->_title);
  259. $x = ($this->_W + $this->_paddingLeft - $this->_paddingRight)/2;
  260. $x -= ($len*$font_w)/2;
  261. $y = ($this->_paddingTop - $font_w)/2 + 12;
  262. //imagestring($this->image, $font, $x, $y, $title, 0x000000);
  263. imagettftext($this->image, 12, 0, $x, $y, 0x000000, DEFAULT_FONT_PATH, $this->_title);
  264. }
  266. public function drawLables()
  267. {
  268. $x1 = $this->_paddingLeft - 5;
  269. $y1 = $this->_H - $this->_paddingBottom + 20;
  270. $x2 = $this->_W - $this->_paddingRight;
  271. $y2 = $this->_H - 10;
  272. //imagefilledrectangle($this->image, $x1, $y1, $x2, $y2, 0xffffff);
  273. imagerectangle($this->image, $x1, $y1, $x2, $y2, 0x000000);
  274. $space = 5;
  275. $x = $x1 + 3;
  276. $y = $y1 + 3;
  277. foreach ($this->_barTexts as $key => $val)
  278. {
  279. $color = $this->_barColors[$key];
  280. $rgb = $this->getRGB($color);
  281. $bg = imagecolorallocate($this->image,$rgb['R'], $rgb['G'], $rgb['B']);
  282. imagefilledrectangle($this->image, $x, $y, $x+12, $y+12, $bg); //绘12*12的矩形
  283. imagerectangle($this->image, $x, $y, $x+12, $y+12, 0x000000); //绘12*12的矩形框
  284. imagettftext($this->image, 12, 0, $x+12+3, $y+12, 0x000000, DEFAULT_FONT_PATH, $val);
  285. $x += 12 + $space + (strlen($val)*8) + $space;
  286. if ($x + (strlen($val)*8) >= $this->_W - $this->_paddingLeft - $this->_paddingRight)
  287. {
  288. $x = $x1 + 3;
  289. $y = $y + 12 + 3;
  290. }
  291. }
  292. }
  294. public function resetPaddingBottom()
  295. {
  296. $ruler_w = $this->_W - $this->_paddingLeft - $this->_paddingRight;
  297. $label_w = $this->getLableTotalWidth();
  298. $lines = ceil($label_w / $ruler_w);
  299. $h = 12 * $lines + (3 * ($lines + 1)) + 30;
  300. return $h;
  301. }
  303. public function resetHeight()
  304. {
  305. $padding_bottom = $this->resetPaddingBottom();
  306. if ($this->_H - $padding_bottom < 222)
  307. {
  308. return 222 + $padding_bottom;
  309. }
  310. return $this->_H;
  311. }
  314. public function getLableTotalWidth()
  315. {
  316. $counts = count($this->_barTexts);
  317. $space = 5;
  318. $total_len = 0;
  319. foreach ($this->_barTexts as $val)
  320. {
  321. $total_len += strlen($val);
  322. }
  324. $tx_w = ($total_len * 9) + ((12 + 3 + $space) * $counts);
  325. return $tx_w;
  326. }
  328. public function setBg($color)
  329. {
  330. $this->_bgColor = $color;
  331. }
  333. public function setTitle($title)
  334. {
  335. $this->_title = $title;
  336. }
  338. public function setColor()
  339. {
  340. $ar = array('ff', '00', '33', '66', '99', 'cc');
  341. $color = array();
  342. for ($i=0; $i<6; $i++)
  343. {
  344. for ($j=0; $j<6; $j++)
  345. {
  346. for($k=0; $k<6; $k++)
  347. {
  348. $color[] = $ar[$i] . $ar[$j] . $ar[$k];
  349. }
  350. }
  351. }
  353. $color2 = array();
  354. for ($i=1; $i<216; $i += 4)
  355. {
  356. $color2[] = $color[$i];
  357. }
  359. return $color2;
  360. }
  362. public function getRGB($color)
  363. {
  364. $ar = array();
  365. $color = hexdec($color);
  366. $ar['R'] = ($color>>16) & 0xff;
  367. $ar['G'] = ($color>>8) & 0xff;
  368. $ar['B'] = ($color) & 0xff;
  369. return $ar;
  370. }
  371. }
  373. /***/
  374. $bar = new Bar(500, 300, array(600, 300, 30, 500, 400, 250, 350, 360), array('AAAAA', 'BBBBB', 'CCCCC', 'DDDDD', 'EEEEEE', 'FFFFFF', 'GGGGGGG', 'HHHHHHHHH'));
  375. $bar->setTitle('打造完美柱状图!');
  376. $bar->stroke();
  377. /***/
  378. ?>



柱状图, php

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