GDC
/**
* GDC
* 我重新改寫的圖片應用函式
* 有縮圖 有合併 有上字 基本的應用
* 把一些常用的功能自動化
* 歡迎取用。
*
* The MIT License (MIT)
*
* Copyright (c) 2016-7-6 henry
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*
*/
class GDC
{
public $font = 'Font/PingFang.ttc';//基本字型
function __construct()
{
}
/**
* [setfont 重新設定字型]
* @param string $font [字型檔的位置]
* @return [type]
*/
public function setfont($font)
{
$this->font = $font; //改變字型
}
/**
* [GDinit 將圖片轉為變數]
* @param [string] $filepath [圖檔的路徑]
* @return [type] 1. array: (變數 , 圖片類型) 2. 0: 為沒有檔案 3. -1: 格式不符
*/
public function GDinit($filepath)
{
// $imageTypeArray = array (0=>'UNKNOWN', 1=>'GIF', 2=>'JPEG', 3=>'PNG', 4=>'SWF', 5=>'PSD', 6=>'BMP', 7=>'TIFF_II', 8=>'TIFF_MM', 9=>'JPC', 10=>'JP2', 11=>'JPX', 12=>'JB2', 13=>'SWC', 14=>'IFF', 15=>'WBMP', 16=>'XBM', 17=>'ICO', 18=>'COUNT');
$type=exif_imagetype($filepath); //取得圖檔類型 參照上方
if (!file_exists($filepath)) {
// throw new InvalidArgumentException('File "'.$filepath.'" not found.');
return 0 ;
break;
}
switch ($type) {
case '3': //PNG
return array(imagecreatefrompng($filepath),'png');
break;
case '2': //JPEG
return array(imagecreatefromjpeg($filepath),'jpg');
break;
case '1': //GIF
return array(imagecreatefromgif($filepath),'gif');
break;
default: //false or 其他
return -1 ;
break;
}
}
/**
* [GDresize 等比例縮小]
* @param [type] $source 已經被轉換的檔
* @param [type] $width 原寬度
* @param [type] $height 原高度
* @param [type] $max 限制最寬跟最高
* @return $thumb
* PS:
* list($w, $h) = getimagesize(檔案路徑);
* 或
* imagesx(圖檔變數) = 寬 & imagesy(圖檔變數) = 高
*/
public function GDresize($source, $width, $height, $max){
// Get new sizes
// 最高最寬不超過 $max 依等比縮小
if($width>$max){
// resize
$newwidth = $max;
$percent = $max / $width;
$newheight = $height * $percent;
}else if($height>$max){
// resize
$newheight = $max;
$percent = $max / $height;
$newwidth = $width * $percent;
}else if($height>=$width){
$newheight = $max;
$percent = $max / $height;
$newwidth = $width * $percent;
}else if($height<$width){
$newwidth = $max;
$percent = $max / $width;
$newheight = $height * $percent;
}
// $newwidth = $width * $percent;
// $newheight = $height * $percent;
// echo $newwidth, $newheight;
// 創造一個真色彩圖檔 黑色底
$thumb = imagecreatetruecolor($newwidth, $newheight);
// Resize 更改原始圖檔大小 ()
/**
* @param [type] $thumb [description]
* @param [type] $source [description]
* @param [type] $newwidth [description]
* @param [type] $newheight[description]
* @param [type] $width [description]
* @param [type] $height [description]
*/
imagecopyResampled($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
// imagecopyResampled
// imagecopyresized // 其他函式方法
return $thumb;
}
/**
* 計算文字寬度，自動換行 (文字高度的有待研究)
* @param [type] $fontsize [description]
* @param [type] $angle [description]
* @param [type] $fontface [description]
* @param [type] $string [description]
* @param [type] $width [description]
* @return [type] [description]
*/
public function autowrap($fontsize, $angle, $string, $width ,$i=2) {
// 字體大小 角度 字串 寬度或高度 (1=高度 2=寬度)
$content = "";
// 將字符傳分拆成一個個chars，再放入letter中
for ($i=0;$i<mb_strlen($string);$i++) {
$letter[] = mb_substr($string, $i, 1);
}
foreach ($letter as $l) {
$teststr = $content." ".$l;
$testbox = imagettfbbox($fontsize, $angle, $this->font, $teststr);
// 判斷串接串後的字串是否超過預設的寬度(or高度)
if (($testbox[$i] > $width) && ($content !== "")) {
$content .= "\n";
}
$content .= $l;
}
return $content;
}
/**
* [GDftext description]
* @param [type] $Image [圖檔變數]
* @param string $text [添加文字]
* @param integer $fontsize [文字大小]
* @param integer $x [文字 X座標]
* @param integer $y [文字 Y座標]
* @param integer $red [文字顏色(紅) 0-255]
* @param integer $green [文字顏色(綠) 0-255]
* @param integer $blue [文字顏色(藍) 0-255]
* @param integer $angle [文字角度]
* @return Image [圖檔變數]
*/
public function GDftext($Image,$text,$fontsize=20,$x=0,$y=0,$red=110,$green=110,$blue=110,$angle=0)
{
// 給文字的字體顏色 通常是黑色
// imagecolorexactalpha ( resource $image , int $red , int $green , int $blue , int $alpha )
$newImageSmallTextColor = imagecolorallocate($Image,$red,$green,$blue);
// fontsize 為字體大小
// angle 為字型的角度，順時鐘計算，0 度為水平，也就是三點鐘的方向 (由左到右)，90 度為上下顛倒
// x,y 為文字的坐標值 (原點為左上角)；
imagettftext($Image, $fontsize, $angle, $x, $y, $newImageSmallTextColor, $this->font , $text); //塞文字
// return $Image; //不用回傳
}
/**
* [GDrotate description] 網路上神人寫的 把那些會莫名其妙顛倒的圖片轉正 (應該是從exif資料去判斷的)
* @param [type] $filename 圖檔路徑
* @param [type] $thumb 圖檔變數 (使用GDinit)
*/
public function GDrotate($filepath,$thumb)
{
$exif = exif_read_data($filepath);
if (!empty($exif['Orientation'])) {
switch ($exif['Orientation']) {
case 3:
$thumb = imagerotate($thumb, 180, 0);
break;
case 6:
$thumb = imagerotate($thumb, -90, 0);
break;
case 8:
$thumb = imagerotate($thumb, 90, 0);
break;
}
}
return $thumb;
}
//==================================================================
// 合併圖檔
//==================================================================
// imagecopy的 - 拷貝圖像的一部分
// imagecopymerge - 拷貝並合併圖像的一部分
// imagecopymergegray - 用灰度拷貝並合併圖像的一部分
// imagecopyresampled - 重採樣拷貝部分圖像並調整大小
// imagecopyresized - 拷貝部分圖像並調整大小
/**
* [合併圖不斷增高]
* @param [type] $array [圖檔變數]
* @param [type] $width [統一的固定寬 自行取最大值 可使用GDmax]
* @return [type] [description]
*/
public function GDmarge_height($array,$width)
{
$gap=10; // gap
$cont_height=0+$gap;
$height=0+$gap;
foreach ($array as $h) {
$cont_height+=imagesy($h);
$cont_height+=$gap;
}
$width+=$gap*2;
$imageResource = imagecreatetruecolor($width, $cont_height);
foreach ($array as $k=> $image) {
imagecopy($imageResource, $image, $gap, $height, 0, 0, $width, $cont_height);
$height=$height+imagesy($image)+$gap; //計算在照片上方有多高了 要移動到這高度才輸出照片 一開始只有間隔
}
return $imageResource;
}
/**
* 合併圖不斷加寬
* @param [type] $array [圖檔變數]
* @param [type] $height [統一的固定高 自行取最大值 可使用GDmax]
* @return [type] [description]
*/
public function GDmarge_width($array,$height)
{
$gap=10; // gap
$cont_width=0+$gap; // 最左邊的空格
$width=0+$gap;
foreach ($array as $w) {
$cont_width+=imagesx($w);
$cont_width+=$gap;
}
$height+=$gap*2;
$imageResource = imagecreatetruecolor($cont_width,$height);
foreach ($array as $k=> $image) {
imagecopy($imageResource, $image, $width ,$gap, 0, 0, $cont_width,$height);
$width=$width+imagesx($image)+$gap;
}
return $imageResource;
}
/**
* [GDmax description]
* @param [type] $array [圖檔變數]
* @param integer $type [1=取最高 其他=取最寬]
*/
public function GDmax($array,$type=1)
{
$max = 0;
foreach ($array as $i) {
if($type===1){$l=imagesx($i);}else{$l=imagesy($i);}
$max=($l>=$max)?$l:$max;
}
return $max;
}
//==================================================================
/**
* Output and free memory 存檔
* @param [type] $thumb 圖檔變數
* @param [type] $savepath 儲存位址 (不存也可以)
* @param [type] $quality 質量(0-100)
* @return [type] true or false
* 加上檔頭就會
* header('Content-Type: image/jpeg');
*/
public function GDoutput($thumb,$savepath=NULL,$quality=70)
{
return imagejpeg($thumb,$savepath,$quality);
imagedestroy($thumb);
}
}