<?php
namespace crmeb\utils;
use crmeb\traits\LogicTrait;
/**
* Class Canvas
* @package crmeb\utils
* @method $this setFileName(string $fileName) 设置文件名
* @method $this setPath(string $path) 设置存放路径
* @method $this setImageType(string $imageType) 设置图片类型
* @method $this setBackgroundHeight(int $backgroundHeight) 设置背景高
* @method $this setBackgroundWidth(int $backgroundWidth) 设置背景宽
* @method $this setFontSize(int $fontSize) 设置字体大小
* @method $this setFontColor($fontColor) 设置字体颜色
* @method $this setFontLeft(int $fontLeft) 设置字体距离左侧位置
* @method $this setFontTop(int $fontTop) 设置字体距离顶部位置
* @method $this setFontText(string $fontText) 设置文字
* @method $this setFontPath(string $fontPath) 设置字体文件路径
* @method $this setFontAngle(int $fontAngle) 设置字体角度
* @method $this setImageUrl(string $imageUrl) 设置图片路径
* @method $this setImageLeft(int $imageLeft) 设置图片距离左侧位置
* @method $this setImageTop(int $imageTop) 设置图片距离顶部位置
* @method $this setImageRight(int $imageRight) 设置图片距离左侧位置
* @method $this setImageStream(bool $imageStream) 设置图片是否未流文件
* @method $this setImageBottom(int $imageBottom) 设置图片距离底部位置
* @method $this setImageWidth(int $imageWidth) 设置图片宽
* @method $this setImageHeight(int $imageHeight) 设置图片高
* @method $this setImageOpacity(int $imageOpacity) 设置图片透明度
*/
class Canvas
{
use LogicTrait;
const FONT = 'static/font/Alibaba-PuHuiTi-Regular.otf';
/**
* 背景宽
* @var int
*/
protected $backgroundWidth = 600;
/**
* 背景高
* @var int
*/
protected $backgroundHeight = 1000;
/**
* 图片类型
* @var string
*/
protected $imageType = 'jpeg';
/**
* 保存地址
* @var string
*/
protected $path = 'uploads/routine/';
/**
* 文件名
* @var string
*/
protected $fileName;
/**
* 规则
* @var array
*/
protected $propsRule = ['fileName', 'path', 'imageType', 'backgroundHeight', 'backgroundWidth'];
/**
* 字体数据集
* @var array
*/
protected $fontValue = [];
/**
* 字体默认可设置vlaue
* @var array
*/
protected $defaultFontValue = [
'fontSize' => 0,
'fontColor' => '231,180,52',
'fontLeft' => 0,
'fontTop' => 0,
'fontText' => '',
'fontPath' => self::FONT,
'fontAngle' => 0,
];
protected $defaultFont;
/**
* 图片数据集
* @var array
*/
protected $imageValue = [];
/**
* 图片可设置属性
* @var array
*/
protected $defaultImageValue = [
'imageUrl' => '',
'imageLeft' => 0,
'imageTop' => 0,
'imageRight' => 0,
'imageBottom' => 0,
'imageWidth' => 0,
'imageHeight' => 0,
'imageOpacity' => 0,
'imageStream' => false,
];
protected $defaultImage;
protected function __construct()
{
$this->defaultImage = $this->defaultImageValue;
$this->defaultFont = $this->defaultFontValue;
}
/**
* 创建一个新图象
* @param string $file
* @return array
*/
public function createFrom(string $file): array
{
$imagesize = getimagesize($file);
$type = image_type_to_extension($imagesize[2], true);
switch ($type) {
case '.png':
$canvas = imagecreatefrompng($file);
break;
case '.jpeg':
$canvas = imagecreatefromjpeg($file);
break;
case '.jpg':
$canvas = imagecreatefromjpeg($file);
break;
case '.gif':
$canvas = imagecreatefromgif($file);
break;
}
return [$canvas, $imagesize];
}
/**
* 放入字体
* @return $this
*/
public function pushFontValue()
{
array_push($this->fontValue, $this->defaultFontValue);
$this->defaultFontValue = $this->defaultFont;
return $this;
}
/**
* 放入图片
* @return $this
*/
public function pushImageValue()
{
array_push($this->imageValue, $this->defaultImageValue);
$this->defaultImageValue = $this->defaultImage;
return $this;
}
/**
* 创建背景
* @param int $w
* @param int $h
* @return false|resource
*/
public function createTrueColor(int $w = 0, int $h = 0)
{
return imagecreatetruecolor($w ? $w : $this->backgroundWidth, $h ? $h : $this->backgroundHeight);
}
/**
* 开始画图
* @param bool $force 生成错误时是否抛出异常
* @return string
* @throws \Exception
*/
public function starDrawChart(bool $force = false): string
{
try {
$image = $this->createTrueColor();
foreach ($this->imageValue as $item) {
if ($item['imageUrl']) {
if ($item['imageStream']) {
$res = getimagesizefromstring($item['imageUrl']);
$mer = imagecreatefromstring($item['imageUrl']);
} else {
[$mer, $res] = $this->createFrom($item['imageUrl']);
}
if ($mer && $res) {
$scrW = $res[0] ?? 0;
$scrH = $res[1] ?? 0;
$imageWidth = $item['imageWidth'] ?: $scrW;
$imageHeight = $item['imageHeight'] ?: $scrH;
imagecopyresampled($image, $mer, $item['imageLeft'], $item['imageTop'], $item['imageRight'], $item['imageBottom'], $imageWidth, $imageHeight, $scrW, $scrH);
unset($scrW, $scrH, $imageWidth, $imageHeight, $res, $mer);
}
}
}
foreach ($this->fontValue as $val) {
if (!is_array($val['fontColor']))
$fontColor = explode(',', $val['fontColor']);
else
$fontColor = $val['fontColor'];
if (count($fontColor) < 3)
throw new \RuntimeException('fontColor Separation of thousand bits');
[$r, $g, $b] = $fontColor;
$fontColor = imagecolorallocate($image, $r, $g, $b);
$val['fontLeft'] = $val['fontLeft'] < 0 ? $this->backgroundWidth - abs($val['fontLeft']) : $val['fontLeft'];
$val['fontTop'] = $val['fontTop'] < 0 ? $this->backgroundHeight - abs($val['fontTop']) : $val['fontTop'];
imagettftext($image, $val['fontSize'], $val['fontAngle'], $val['fontLeft'], $val['fontTop'], $fontColor, $val['fontPath'], $val['fontText']);
unset($r, $g, $b, $fontColor);
}
if (is_null($this->fileName)) {
$this->fileName = md5(time());
}
$strlen = stripos($this->path, 'uploads');
$path = $this->path;
if ($strlen !== false) {
$path = substr($this->path, 8);
}
make_path($path, 4, true);
$save_file = $this->path . $this->fileName . '.' . $this->imageType;
switch ($this->imageType) {
case 'jpeg':
case 'jpg':
imagejpeg($image, $save_file, 70);
break;
case 'png':
imagepng($image, $save_file, 70);
break;
case 'gif':
imagegif($image, $save_file, 70);
break;
default:
throw new \RuntimeException('Incorrect type set:' . $this->imageType);
}
imagedestroy($image);
return $save_file;
} catch (\Throwable $e) {
if ($force || $e instanceof \RuntimeException)
throw new \Exception($e->getMessage());
return '';
}
}
/**
* Magic access..
*
* @param $method
* @param $args
* @return $this
*/
public function __call($method, $args): self
{
if (0 === stripos($method, 'set') && strlen($method) > 3) {
$method = lcfirst(substr($method, 3));
}
$imageValueKes = array_keys($this->defaultImageValue);
$fontValueKes = array_keys($this->defaultFontValue);
if (in_array($method, $imageValueKes)) {
$this->defaultImageValue[$method] = array_shift($args);
}
if (in_array($method, $fontValueKes)) {
$this->defaultFontValue[$method] = array_shift($args);
}
if (in_array($method, $this->propsRule)) {
$this->{$method} = array_shift($args);
}
return $this;
}
}