線上編輯二維碼並發送到熱感式印表機列印-php教程-PHP中文網

線上編輯二維碼並發送到熱感式印表機列印

WBOY

發布： 2016-07-25 08:46:27

原創

2710 人瀏覽過

單引號的可使用 chr('0xFE') 進行轉換

線上編輯

使用到的 js 外掛：

qrcodesvg

根據資訊繪製二維碼插件 colorPicker

用於顏色選擇，js綁定事件更改二維碼（svg）的顏色 canvg

用於將svg格式的二維碼轉換成 html5 的 canvas ，之後使用 toDataURL 方法產生二維碼圖片的 base64 編碼資料，透過 Ajax 傳送給後端熱感式印表機列印二維碼

圖片要轉換成BMP格式。轉換圖片到BMP的類別：

/**
* 類別jpg、gif、png =========> BMP
*
* { 說明:-
* 調整jpg、gif 或png 大小並轉換為bmp
* }
* 欲了解更多信息，請聯繫我(mahabub1212@yahoo.com )
* 您可以修改或使用或重新分發此類。
*/
class ToBmp{
// new image width
var🎜 $new_width;
// new image height
var $new_height;
// image resources
var $new_height;
// image resources
var $image_resource; $img_info = getimagesize($source_image);
switch ($img_info['mime']){
case "image/jpeg": { $this->image_resource = imagecreatefromjpeg source_image); break; }
case "image/gif": { $this->image_resource = imagecreatefromgif ($source_image); break; }
case "image/png": { $this->image_resource = imagecreate case "image/png": { $this->image_resource = imagecreate ($source_image); break; }
default: {die("圖片錯誤");}
}
}
public function imagebmp($file_path'') {
if(!$this->image_resource) die("圖片錯誤");
$picture_width = imagesx($this->image_resource);
$picture_height = imagesy($this- >image_resource);
if(!imageistruecolor($this->image_resource)){
$tmp_img_reource = imagecreatetruecolor($picture_width,$picture_height); this->image_resource, 0, 0, 0, 0, $picture_width, $picture_height);
imagedestroy($this->image_resource);
$this->image_resource = $tmp_image_resource);
$this->image_resource = $tmp_img_reource
; }
if((int) $this->new_width >0 && (int) $this->new_height > 0){
$image_resized = imagecreatetruecolor($$this-this> new_width, $this->new_height);
imagecopyresampled($image_resized,$this->image_resource,0,0,0,0,$this->new_width,$this->new_height,$picture_widight,$picture_height);
$this->image_resource = $image_resized;
}
$result = ''； biBPLine = ((int) $this->new_width >0 &&(int)$this->new_height > 0) ? $this->new_width * 3 : $picture_width * 3;
$biStride = ($biBPLine 3) & ~3;
$biSizeImage = ((int) $this->new_width >0 &&(int)$this->new_height > 0) ? $biStride * $this->new_height : $biStride * $picture_height;
$bfOffBits = 54;
$bfSize = $bfOffBits $biSizeImage;
$result .= substr('BM', 0, 2);
$result .= substr('BM', 0, 2);
$packresult . ', $bfSize, 0, 0, $bfOffBits);
$result .= ((int) $this->new_width >0 &&(int)$this->new_height > 0) ? pack ('VVVvvVVVVVV', 40, $this->new_width, $this->new_height, 1, 24, 0, $biSizeImage, 0, 0, 0, 0) : pack ('VVVvvVVVVVVV', 40, $picture_width, $picture_heightVVVVVVV', 40, $picture_width, $picture_height, 11, 110 0, $biSizeImage, 0, 0, 0, 0);
$numpad = $biStride - $biBPLine;
$h = ((int) $this->new_width >0 &&& (int)$this->new_height > 0) ? $this->new_height : $picture_height;
$w = ((int) $this->new_width >0 &&(int)$this->new_height > 0) ? $this->new_width : $picture_width;
for ($y = $h - 1; $y >= 0; --$y) {
for ($x = 0; $x $col = imagecolorat ($this->image_resource, $x, $y);
$result .= substr(pack ('V', $col), 0, 3);
}
for ($i = 0; $i $result .= pack ('C', 0);
}
}
if($file_path == ''){
header("Content-type: image/bmp");
echo $result;
} else {
$fp = fopen($file_path,"wb");
fwrite($fp,$result);
fclose($fp);
//===== ==========
}
return ;
}
}
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