Home > php教程 > PHP源码 > 图片类 支持GD和Imagick,gif动画类型

图片类 支持GD和Imagick,gif动画类型

PHP中文网
Release: 2016-05-23 08:39:31
Original
1711 people have browsed it





1. [文件]     Image.class.php                                

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

<?php

namespace YBL;

class Image{

    /* 驱动相关常量定义 */

    const IMAGE_GD              =   0; //常量,标识GD库类型

    const IMAGE_IMAGICK         =   1; //常量,标识imagick库类型

 

    /* 缩略图相关常量定义 */

    const IMAGE_THUMB_SCALE     =   0 ; //常量,标识缩略图等比例缩放类型

    const IMAGE_THUMB_FILLED    =   1 ; //常量,标识缩略图缩放后填充类型

    const IMAGE_THUMB_CENTER    =   2 ; //常量,标识缩略图居中裁剪类型

    const IMAGE_THUMB_NORTHWEST =   3 ; //常量,标识缩略图左上角裁剪类型

    const IMAGE_THUMB_SOUTHEAST =   4 ; //常量,标识缩略图右下角裁剪类型

    const IMAGE_THUMB_FIXED     =   5 ; //常量,标识缩略图固定尺寸缩放类型

 

    /* 水印相关常量定义 */

    const IMAGE_WATER_CENTER    =   0 ; //常量,标识居中水印

    const IMAGE_WATER_NORTHWEST =   1 ; //常量,标识左上角水印

    const IMAGE_WATER_NORTH     =   2 ; //常量,标识上居中水印

    const IMAGE_WATER_NORTHEAST =   3 ; //常量,标识右上角水印

    const IMAGE_WATER_EAST      =   4 ; //常量,标识右居中水印

    const IMAGE_WATER_SOUTHEAST =   5 ; //常量,标识右下角水印   

    const IMAGE_WATER_SOUTH     =   6 ; //常量,标识下居中水印   

    const IMAGE_WATER_SOUTHWEST =   7 ; //常量,标识左下角水印

    const IMAGE_WATER_WEST      =   8 ; //常量,标识左居中水印

 

 

    /**

     * 图片资源

     * @var resource

     */

    private $img;

 

    /**

     * 构造方法,用于实例化一个图片处理对象

     * @param string $type 要使用的类库,默认使用GD库

     */

    public function __construct($gif_proess=false,$type = self::IMAGE_GD){

        /* 判断调用库的类型 */

        switch ($type) {

            case self::IMAGE_GD:

                $class = &#39;Gd&#39;;

                break;

            case self::IMAGE_IMAGICK:

                $class =&#39;Imagick&#39;;

                break;

            default:

                exit(&#39;不支持的图片处理库类型&#39;);

        }

 

        /* 引入处理库,实例化图片处理对象 */

        include_once($class.&#39;.class.php&#39;);

        $class = __NAMESPACE__.&#39;\\&#39;.$class;

        $this->img = new $class($gif_proess);

 

    }

 

    /**

     * 打开一幅图像

     * @param  string $imgname 图片路径

     * @return Object          当前图片处理库对象

     */

    public function open($imgname){

        $this->img->open($imgname);

        return $this;

    }

 

    /**

     * 保存图片

     * @param  string  $imgname   图片保存名称

     * @param  string  $type      图片类型

     * @param  integer $quality   图像质量     

     * @param  boolean $interlace 是否对JPEG类型图片设置隔行扫描

     * @return Object             当前图片处理库对象

     */

    public function save($imgname, $type = null, $quality=80,$interlace = true){

        $this->img->save($imgname, $type, $quality,$interlace);

        return $this;

    }

 

    /**

     * 返回图片宽度

     * @return integer 图片宽度

     */

    public function width(){

        return $this->img->width();

    }

 

    /**

     * 返回图片高度

     * @return integer 图片高度

     */

    public function height(){

        return $this->img->height();

    }

 

    /**

     * 返回图像类型

     * @return string 图片类型

     */

    public function type(){

        return $this->img->type();

    }

 

    /**

     * 返回图像MIME类型

     * @return string 图像MIME类型

     */

    public function mime(){

        return $this->img->mime();

    }

 

    /**

     * 返回图像尺寸数组 0 - 图片宽度,1 - 图片高度

     * @return array 图片尺寸

     */

    public function size(){

        return $this->img->size();

    }

 

    /**

     * 裁剪图片

     * @param  integer $w      裁剪区域宽度

     * @param  integer $h      裁剪区域高度

     * @param  integer $x      裁剪区域x坐标

     * @param  integer $y      裁剪区域y坐标

     * @param  integer $width  图片保存宽度

     * @param  integer $height 图片保存高度

     * @return Object          当前图片处理库对象

     */

    public function crop($w, $h, $x = 0, $y = 0, $width = null, $height = null){

        $this->img->crop($w, $h, $x, $y, $width, $height);

        return $this;

    }

 

    /**

     * 生成缩略图

     * @param  integer $width  缩略图最大宽度

     * @param  integer $height 缩略图最大高度

     * @param  integer $type   缩略图裁剪类型

     * @return Object          当前图片处理库对象

     */

    public function thumb($width, $height, $type = self::IMAGE_THUMB_SCALE){

        $this->img->thumb($width, $height, $type);

        return $this;

    }

 

    /**

     * 添加水印

     * @param  string  $source 水印图片路径

     * @param  integer $locate 水印位置

     * @param  integer $alpha  水印透明度

     * @return Object          当前图片处理库对象

     */

    public function water($source, $locate = self::IMAGE_WATER_SOUTHEAST,$alpha=80){

        $this->img->water($source, $locate,$alpha);

        return $this;

    }

 

    /**

     * 图像添加文字

     * @param  string  $text   添加的文字

     * @param  string  $font   字体路径

     * @param  integer $size   字号

     * @param  string  $color  文字颜色

     * @param  integer $locate 文字写入位置

     * @param  integer $offset 文字相对当前位置的偏移量

     * @param  integer $angle  文字倾斜角度

     * @return Object          当前图片处理库对象

     */

    public function text($text, $font, $size, $color = &#39;#00000000&#39;,$locate = self::IMAGE_WATER_SOUTHEAST, $offset = 0, $angle = 0){

        $this->img->text($text, $font, $size, $color, $locate, $offset, $angle);

        return $this;

    }

}

Copy after login

2. [文件] Gd.class.php

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

991

992

993

994

995

996

997

998

999

1000

1001

1002

1003

1004

1005

1006

1007

1008

1009

1010

1011

1012

1013

1014

1015

1016

1017

<?php

namespace YBL;

class Gd{

    /**

     * 图像资源对象

     * @var resource

     */

    private $img;

    /**

     * 图像信息,包括width,height,type,mime,size

     * @var array

     */

    private $info;

    public $error;

    /**

     * 构造方法,可用于打开一张图像

     * @param string $imgname 图像路径

     */

    private $gif_proess;      

    public function __construct($gif_proess=true) {

       $this->gif_proess=$gif_proess;

    }

    /**

     * 打开一张图像

     * @param  string $imgname 图像路径

     */

    public function open($imgname){

        //检测图像文件

        if(!is_file($imgname)){

      $this->error=&#39;不存在的图像文件&#39;;

         return false;

      }

        //获取图像信息

        $info = getimagesize($imgname);

        //检测图像合法性

        if(false === $info || (IMAGETYPE_GIF === $info[2] && empty($info[&#39;bits&#39;]))){

           $this->error=&#39;非法图像文件&#39;;

         return false;

        }

        //设置图像信息

        $this->info = array(

            &#39;width&#39;  => $info[0],

            &#39;height&#39; => $info[1],

            &#39;type&#39;   => image_type_to_extension($info[2], false),

            &#39;mime&#39;   => $info[&#39;mime&#39;],

        );

        //销毁已存在的图像

        empty($this->img) || imagedestroy($this->img);

        //打开图像

        if((&#39;gif&#39; == $this->info[&#39;type&#39;])&&$this->gif_proess){

            $this->gif = new GIF($imgname);

            $this->img = imagecreatefromstring($this->gif->image());

        } else {

            $fun = "imagecreatefrom{$this->info[&#39;type&#39;]}";

            $this->img = $fun($imgname);

        }

    }

    /**

     * 保存图像

     * @param  string  $imgname   图像保存名称

     * @param  string  $type      图像类型

     * @param  integer $quality   图像质量    

     * @param  boolean $interlace 是否对JPEG类型图像设置隔行扫描

     */

    public function save($imgname, $type = null, $quality=80,$interlace = true){

        if(empty($this->img)){

         $this->error=&#39;没有可以被保存的图像资源&#39;;

         return false;

      }

        //自动获取图像类型

        if(is_null($type)){

            $type = $this->info[&#39;type&#39;];

        } else {

            $type = strtolower($type);

        }

        //保存图像

        if(&#39;jpeg&#39; == $type || &#39;jpg&#39; == $type){

            //JPEG图像设置隔行扫描

            imageinterlace($this->img, $interlace);

            imagejpeg($this->img, $imgname,$quality);

        }elseif((&#39;gif&#39; == $type)&& !empty($this->gif)){

            $this->gif->save($imgname);

        }else{

            $fun  =   &#39;image&#39;.$type;

            $fun($this->img, $imgname);

        }

    }

    /**

     * 返回图像宽度

     * @return integer 图像宽度

     */

    public function width(){

        if(empty($this->img)){

         $this->error=&#39;没有指定图像资源&#39;;

         return false;

      }

        return $this->info[&#39;width&#39;];

    }

    /**

     * 返回图像高度

     * @return integer 图像高度

     */

    public function height(){

        if(empty($this->img)){

         $this->error=&#39;没有指定图像资源&#39;;

         return false;

      }

        return $this->info[&#39;height&#39;];

    }

    /**

     * 返回图像类型

     * @return string 图像类型

     */

    public function type(){

        if(empty($this->img)){$this->error=&#39;没有指定图像资源&#39;;

         return false;}

        return $this->info[&#39;type&#39;];

    }

    /**

     * 返回图像MIME类型

     * @return string 图像MIME类型

     */

    public function mime(){

        if(empty($this->img)){

         $this->error=&#39;没有指定图像资源&#39;;

         return false;

      }

        return $this->info[&#39;mime&#39;];

    }

    /**

     * 返回图像尺寸数组 0 - 图像宽度,1 - 图像高度

     * @return array 图像尺寸

     */

    public function size(){

        if(empty($this->img)) {

         $this->error=&#39;没有指定图像资源&#39;;

         return false;

      }

        return array($this->info[&#39;width&#39;], $this->info[&#39;height&#39;]);

    }

    /**

     * 裁剪图像

     * @param  integer $w      裁剪区域宽度

     * @param  integer $h      裁剪区域高度

     * @param  integer $x      裁剪区域x坐标

     * @param  integer $y      裁剪区域y坐标

     * @param  integer $width  图像保存宽度

     * @param  integer $height 图像保存高度

     */

    public function crop($w, $h, $x = 0, $y = 0, $width = null, $height = null){

        if(empty($this->img)){

         $this->error=&#39;没有可以被裁剪的图像资源&#39;;

         return false;

      }

        //设置保存尺寸

        empty($width)  && $width  = $w;

        empty($height) && $height = $h;

        do {

            //创建新图像

            $img = imagecreatetruecolor($width, $height);

            // 调整默认颜色

            $color = imagecolorallocate($img, 255, 255, 255);

            imagefill($img, 0, 0, $color);

            //裁剪

            imagecopyresampled($img, $this->img, 0, 0, $x, $y, $width, $height, $w, $h);

            imagedestroy($this->img); //销毁原图

            //设置新图像

            $this->img = $img;

        } while(!empty($this->gif)&&$this->gifNext());

        $this->info[&#39;width&#39;]  = $width;

        $this->info[&#39;height&#39;] = $height;

    }

    /**

     * 生成缩略图

     * @param  integer $width  缩略图最大宽度

     * @param  integer $height 缩略图最大高度

     * @param  integer $type   缩略图裁剪类型

     */

    public function thumb($width, $height, $type = Image::IMAGE_THUMB_SCALE){

        if(empty($this->img)){

         $this->error=&#39;没有可以被缩略的图像资源&#39;;

         return false;

      }

        //原图宽度和高度

        $w = $this->info[&#39;width&#39;];

        $h = $this->info[&#39;height&#39;];

        /* 计算缩略图生成的必要参数 */

        switch ($type) {

            /* 等比例缩放 */

            case Image::IMAGE_THUMB_SCALE:

                //原图尺寸小于缩略图尺寸则不进行缩略

                if($w < $width && $h < $height) return;

                //计算缩放比例

                $scale = min($width/$w, $height/$h);

                 

                //设置缩略图的坐标及宽度和高度

                $x = $y = 0;

                $width  = $w * $scale;

                $height = $h * $scale;

                break;

            /* 居中裁剪 */

            case Image::IMAGE_THUMB_CENTER:

                //计算缩放比例

                $scale = max($width/$w, $height/$h);

                //设置缩略图的坐标及宽度和高度

                $w = $width/$scale;

                $h = $height/$scale;

                $x = ($this->info[&#39;width&#39;] - $w)/2;

                $y = ($this->info[&#39;height&#39;] - $h)/2;

                break;

            /* 左上角裁剪 */

            case Image::IMAGE_THUMB_NORTHWEST:

                //计算缩放比例

                $scale = max($width/$w, $height/$h);

                //设置缩略图的坐标及宽度和高度

                $x = $y = 0;

                $w = $width/$scale;

                $h = $height/$scale;

                break;

            /* 右下角裁剪 */

            case Image::IMAGE_THUMB_SOUTHEAST:

                //计算缩放比例

                $scale = max($width/$w, $height/$h);

                //设置缩略图的坐标及宽度和高度

                $w = $width/$scale;

                $h = $height/$scale;

                $x = $this->info[&#39;width&#39;] - $w;

                $y = $this->info[&#39;height&#39;] - $h;

                break;

            /* 填充 */

            case Image::IMAGE_THUMB_FILLED:

                //计算缩放比例

                if($w < $width && $h < $height){

                    $scale = 1;

                } else {

                    $scale = min($width/$w, $height/$h);

                }

                //设置缩略图的坐标及宽度和高度

                $neww = $w * $scale;

                $newh = $h * $scale;

                $posx = ($width  - $w * $scale)/2;

                $posy = ($height - $h * $scale)/2;

                do{

                    //创建新图像

                    $img = imagecreatetruecolor($width, $height);

                    // 调整默认颜色

                    $color = imagecolorallocate($img, 255, 255, 255);

                    imagefill($img, 0, 0, $color);

                    //裁剪

                    imagecopyresampled($img, $this->img, $posx, $posy, $x, $y, $neww, $newh, $w, $h);

                    imagedestroy($this->img); //销毁原图

                    $this->img = $img;

                } while(!empty($this->gif)&&$this->gifNext());

                 

                $this->info[&#39;width&#39;]  = $width;

                $this->info[&#39;height&#39;] = $height;

                return;

            /* 固定 */

            case Image::IMAGE_THUMB_FIXED:

                $x = $y = 0;

                break;

            default:

               $this->error=&#39;不支持的缩略图裁剪类型&#39;;

         return false;

        }

        /* 裁剪图像 */

        $this->crop($w, $h, $x, $y, $width, $height);

    }

    /**

     * 添加水印

     * @param  string  $source 水印图片路径

     * @param  integer $locate 水印位置

     * @param  integer $alpha  水印透明度

     */

    public function water($source, $locate = Image::IMAGE_WATER_SOUTHEAST,$alpha=80){

        //资源检测

        if(empty($this->img)) {

           $this->error=&#39;没有可以被添加水印的图像资源&#39;;

         return false;

      }

        if(!is_file($source)) {

         $this->error=&#39;水印图像不存在&#39;;

         return false;

      }

        //获取水印图像信息

        $info = getimagesize($source);

        if(false === $info || (IMAGETYPE_GIF === $info[2] && empty($info[&#39;bits&#39;]))){

            $this->error=&#39;非法水印文件&#39;;

         return false;

        }

        //创建水印图像资源

        $fun   = &#39;imagecreatefrom&#39; . image_type_to_extension($info[2], false);

        $water = $fun($source);

        //设定水印图像的混色模式

        imagealphablending($water, true);

        /* 设定水印位置 */

        switch ($locate) {

            /* 右下角水印 */

            case Image::IMAGE_WATER_SOUTHEAST:

                $x = $this->info[&#39;width&#39;] - $info[0];

                $y = $this->info[&#39;height&#39;] - $info[1];

                break;

            /* 左下角水印 */

            case Image::IMAGE_WATER_SOUTHWEST:

                $x = 0;

                $y = $this->info[&#39;height&#39;] - $info[1];

                break;

            /* 左上角水印 */

            case Image::IMAGE_WATER_NORTHWEST:

                $x = $y = 0;

                break;

            /* 右上角水印 */

            case Image::IMAGE_WATER_NORTHEAST:

                $x = $this->info[&#39;width&#39;] - $info[0];

                $y = 0;

                break;

            /* 居中水印 */

            case Image::IMAGE_WATER_CENTER:

                $x = ($this->info[&#39;width&#39;] - $info[0])/2;

                $y = ($this->info[&#39;height&#39;] - $info[1])/2;

                break;

            /* 下居中水印 */

            case Image::IMAGE_WATER_SOUTH:

                $x = ($this->info[&#39;width&#39;] - $info[0])/2;

                $y = $this->info[&#39;height&#39;] - $info[1];

                break;

            /* 右居中水印 */

            case Image::IMAGE_WATER_EAST:

                $x = $this->info[&#39;width&#39;] - $info[0];

                $y = ($this->info[&#39;height&#39;] - $info[1])/2;

                break;

            /* 上居中水印 */

            case Image::IMAGE_WATER_NORTH:

                $x = ($this->info[&#39;width&#39;] - $info[0])/2;

                $y = 0;

                break;

            /* 左居中水印 */

            case Image::IMAGE_WATER_WEST:

                $x = 0;

                $y = ($this->info[&#39;height&#39;] - $info[1])/2;

                break;

            default:

                /* 自定义水印坐标 */

                if(is_array($locate)){

                    list($x, $y) = $locate;

                } else {$this->error=&#39;不支持的水印位置类型&#39;;

         return false;

                

                }

        }

        do{

            //添加水印

            $src = imagecreatetruecolor($info[0], $info[1]);

            // 调整默认颜色

            $color = imagecolorallocate($src, 255, 255, 255);

            imagefill($src, 0, 0, $color);

            imagecopy($src, $this->img, 0, 0, $x, $y, $info[0], $info[1]);

            imagecopy($src, $water, 0, 0, 0, 0, $info[0], $info[1]);

            imagecopymerge($this->img, $src, $x, $y, 0, 0, $info[0], $info[1], $alpha);

            //销毁零时图片资源

            imagedestroy($src);

        } while(!empty($this->gif)&&$this->gifNext());

        //销毁水印资源

        imagedestroy($water);

    }

    /**

     * 图像添加文字

     * @param  string  $text   添加的文字

     * @param  string  $font   字体路径

     * @param  integer $size   字号

     * @param  string  $color  文字颜色

     * @param  integer $locate 文字写入位置

     * @param  integer $offset 文字相对当前位置的偏移量

     * @param  integer $angle  文字倾斜角度

     */

    public function text($text, $font, $size, $color = &#39;#00000000&#39;,

        $locate = Image::IMAGE_WATER_SOUTHEAST, $offset = 0, $angle = 0){

        //资源检测

        if(empty($this->img)){

         $this->error=&#39;没有可以被写入文字的图像资源&#39;;

         return false;

      }

        if(!is_file($font)){

         $this->error="不存在的字体文件:{$font}";

         return false;

      }

        //获取文字信息

        $info = imagettfbbox($size, $angle, $font, $text);

        $minx = min($info[0], $info[2], $info[4], $info[6]);

        $maxx = max($info[0], $info[2], $info[4], $info[6]);

        $miny = min($info[1], $info[3], $info[5], $info[7]);

        $maxy = max($info[1], $info[3], $info[5], $info[7]);

        /* 计算文字初始坐标和尺寸 */

        $x = $minx;

        $y = abs($miny);

        $w = $maxx - $minx;

        $h = $maxy - $miny;

        /* 设定文字位置 */

        switch ($locate) {

            /* 右下角文字 */

            case Image::IMAGE_WATER_SOUTHEAST:

                $x += $this->info[&#39;width&#39;]  - $w;

                $y += $this->info[&#39;height&#39;] - $h;

                break;

            /* 左下角文字 */

            case Image::IMAGE_WATER_SOUTHWEST:

                $y += $this->info[&#39;height&#39;] - $h;

                break;

            /* 左上角文字 */

            case Image::IMAGE_WATER_NORTHWEST:

                // 起始坐标即为左上角坐标,无需调整

                break;

            /* 右上角文字 */

            case Image::IMAGE_WATER_NORTHEAST:

                $x += $this->info[&#39;width&#39;] - $w;

                break;

            /* 居中文字 */

            case Image::IMAGE_WATER_CENTER:

                $x += ($this->info[&#39;width&#39;]  - $w)/2;

                $y += ($this->info[&#39;height&#39;] - $h)/2;

                break;

            /* 下居中文字 */

            case Image::IMAGE_WATER_SOUTH:

                $x += ($this->info[&#39;width&#39;] - $w)/2;

                $y += $this->info[&#39;height&#39;] - $h;

                break;

            /* 右居中文字 */

            case Image::IMAGE_WATER_EAST:

                $x += $this->info[&#39;width&#39;] - $w;

                $y += ($this->info[&#39;height&#39;] - $h)/2;

                break;

            /* 上居中文字 */

            case Image::IMAGE_WATER_NORTH:

                $x += ($this->info[&#39;width&#39;] - $w)/2;

                break;

            /* 左居中文字 */

            case Image::IMAGE_WATER_WEST:

                $y += ($this->info[&#39;height&#39;] - $h)/2;

                break;

            default:

                /* 自定义文字坐标 */

                if(is_array($locate)){

                    list($posx, $posy) = $locate;

                    $x += $posx;

                    $y += $posy;

                } else {$this->error=&#39;不支持的文字位置类型&#39;;

         return false;

                }

        }

        /* 设置偏移量 */

        if(is_array($offset)){

            $offset = array_map(&#39;intval&#39;, $offset);

            list($ox, $oy) = $offset;

        } else{

            $offset = intval($offset);

            $ox = $oy = $offset;

        }

        /* 设置颜色 */

        if(is_string($color) && 0 === strpos($color, &#39;#&#39;)){

            $color = str_split(substr($color, 1), 2);

            $color = array_map(&#39;hexdec&#39;, $color);

            if(empty($color[3]) || $color[3] > 127){

                $color[3] = 0;

            }

        } elseif (!is_array($color)) {

            $this->error=&#39;错误的颜色值&#39;;

         return false;

        }

        do{

            /* 写入文字 */

            $col = imagecolorallocatealpha($this->img, $color[0], $color[1], $color[2], $color[3]);

            imagettftext($this->img, $size, $angle, $x + $ox, $y + $oy, $col, $font, $text);

        } while(!empty($this->gif)&&$this->gifNext());

    }

    /* 切换到GIF的下一帧并保存当前帧,内部使用 */

    private function gifNext(){

        ob_start();

        ob_implicit_flush(0);

        imagegif($this->img);

        $img = ob_get_clean();

        $this->gif->image($img);

        $next = $this->gif->nextImage();

        if($next){

            $this->img = imagecreatefromstring($next);

            return $next;

        } else {

            $this->img = imagecreatefromstring($this->gif->image());

            return false;

        }

    }

    /**

     * 析构方法,用于销毁图像资源

     */

    public function __destruct() {

        empty($this->img) || imagedestroy($this->img);

    }

}

class GIF{

   /**

    * GIF帧列表

    * @var array

    */

   private $frames = array();

   /**

    * 每帧等待时间列表

    * @var array

    */

   private $delays = array();

   /**

    * 构造方法,用于解码GIF图片

    * @param string $src GIF图片数据

    * @param string $mod 图片数据类型

    */

   public function __construct($src = null, $mod = &#39;url&#39;) {

      if(!is_null($src)){

         if(&#39;url&#39; == $mod && is_file($src)){

            $src = file_get_contents($src);

         }

          

         /* 解码GIF图片 */

         try{

            $de = new GIFDecoder($src);

            $this->frames = $de->GIFGetFrames();

            $this->delays = $de->GIFGetDelays();

         } catch(Exception $e){

            $this->error=&#39;解码GIF图片出错&#39;;

         return false;

         }

      }

   }

   /**

    * 设置或获取当前帧的数据

    * @param  string $stream 二进制数据流

    * @return boolean        获取到的数据

    */

   public function image($stream = null){

      if(is_null($stream)){

         $current = current($this->frames);

         return false === $current ? reset($this->frames) : $current;

      } else {

         $this->frames[key($this->frames)] = $stream;

      }

   }

   /**

    * 将当前帧移动到下一帧

    * @return string 当前帧数据

    */

   public function nextImage(){

      return next($this->frames);

   }

   /**

    * 编码并保存当前GIF图片

    * @param  string $gifname 图片名称

    */

   public function save($gifname){

      $gif = new GIFEncoder($this->frames, $this->delays, 0, 2, 0, 0, 0, &#39;bin&#39;);

      file_put_contents($gifname, $gif->GetAnimation());

   }

}

/*

:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

::

:: GIFEncoder Version 2.0 by László Zsidi, http://gifs.hu

::

:: This class is a rewritten &#39;GifMerge.class.php&#39; version.

::

::  Modification:

::   - Simplified and easy code,

::   - Ultra fast encoding,

::   - Built-in errors,

::   - Stable working

::

::

:: Updated at 2007. 02. 13. &#39;00.05.AM&#39;

::

::

::

::  Try on-line GIFBuilder Form demo based on GIFEncoder.

::

::  http://gifs.hu/phpclasses/demos/GifBuilder/

::

:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

*/

Class GIFEncoder {

   private $GIF = "GIF89a";      /* GIF header 6 bytes  */

   private $VER = "GIFEncoder V2.05"; /* Encoder version    */

   private $BUF = Array ( );

   private $LOP =  0;

   private $DIS =  2;

   private $COL = -1;

   private $IMG = -1;

   private $ERR = Array (

      &#39;ERR00&#39;    => "Does not supported function for only one image!",

      &#39;ERR01&#39;    => "Source is not a GIF image!",

      &#39;ERR02&#39;    => "Unintelligible flag ",

      &#39;ERR03&#39;    => "Does not make animation from animated GIF source",

   );

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFEncoder...

   ::

   */

   public function __construct($GIF_src, $GIF_dly, $GIF_lop, $GIF_dis,$GIF_red, $GIF_grn, $GIF_blu, $GIF_mod) {

      if ( ! is_array ( $GIF_src ) && ! is_array ( $GIF_dly ) ) {

         printf ( "%s: %s", $this->VER, $this->ERR [ &#39;ERR00&#39; ] );

         exit   ( 0 );

      }

      $this->LOP = ( $GIF_lop > -1 ) ? $GIF_lop : 0;

      $this->DIS = ( $GIF_dis > -1 ) ? ( ( $GIF_dis < 3 ) ? $GIF_dis : 3 ) : 2;

      $this->COL = ( $GIF_red > -1 && $GIF_grn > -1 && $GIF_blu > -1 ) ?

                  ( $GIF_red | ( $GIF_grn << 8 ) | ( $GIF_blu << 16 ) ) : -1;

      for ( $i = 0; $i < count ( $GIF_src ); $i++ ) {

         if ( strToLower ( $GIF_mod ) == "url" ) {

            $this->BUF [ ] = fread ( fopen ( $GIF_src [ $i ], "rb" ), filesize ( $GIF_src [ $i ] ) );

         }

         else if ( strToLower ( $GIF_mod ) == "bin" ) {

            $this->BUF [ ] = $GIF_src [ $i ];

         }

         else {

            printf ( "%s: %s ( %s )!", $this->VER, $this->ERR [ &#39;ERR02&#39; ], $GIF_mod );

            exit   ( 0 );

         }

         if ( substr ( $this->BUF [ $i ], 0, 6 ) != "GIF87a" && substr ( $this->BUF [ $i ], 0, 6 ) != "GIF89a" ) {

            printf ( "%s: %d %s", $this->VER, $i, $this->ERR [ &#39;ERR01&#39; ] );

            exit   ( 0 );

         }

         for ( $j = ( 13 + 3 * ( 2 << ( ord ( $this->BUF [ $i ] { 10 } ) & 0x07 ) ) ), $k = TRUE; $k; $j++ ) {

            switch ( $this->BUF [ $i ] { $j } ) {

               case "!":

                  if ( ( substr ( $this->BUF [ $i ], ( $j + 3 ), 8 ) ) == "NETSCAPE" ) {

                     printf ( "%s: %s ( %s source )!", $this->VER, $this->ERR [ &#39;ERR03&#39; ], ( $i + 1 ) );

                     exit   ( 0 );

                  }

                  break;

               case ";":

                  $k = FALSE;

                  break;

            }

         }

      }

      $this->GIFAddHeader ( );

      for ( $i = 0; $i < count ( $this->BUF ); $i++ ) {

         $this->GIFAddFrames ( $i, $GIF_dly [ $i ] );

      }

      $this->GIFAddFooter ( );

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFAddHeader...

   ::

   */

   private function GIFAddHeader ( ) {

      $cmap = 0;

      if ( ord ( $this->BUF [ 0 ] { 10 } ) & 0x80 ) {

         $cmap = 3 * ( 2 << ( ord ( $this->BUF [ 0 ] { 10 } ) & 0x07 ) );

         $this->GIF .= substr ( $this->BUF [ 0 ], 6, 7     );

         $this->GIF .= substr ( $this->BUF [ 0 ], 13, $cmap );

         $this->GIF .= "!\377\13NETSCAPE2.0\3\1" . $this->GIFWord ( $this->LOP ) . "\0";

      }

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFAddFrames...

   ::

   */

   private function GIFAddFrames ( $i, $d ) {

      $Locals_str = 13 + 3 * ( 2 << ( ord ( $this->BUF [ $i ] { 10 } ) & 0x07 ) );

      $Locals_end = strlen ( $this->BUF [ $i ] ) - $Locals_str - 1;

      $Locals_tmp = substr ( $this->BUF [ $i ], $Locals_str, $Locals_end );

      $Global_len = 2 << ( ord ( $this->BUF [ 0  ] { 10 } ) & 0x07 );

      $Locals_len = 2 << ( ord ( $this->BUF [ $i ] { 10 } ) & 0x07 );

      $Global_rgb = substr ( $this->BUF [ 0  ], 13,

                     3 * ( 2 << ( ord ( $this->BUF [ 0  ] { 10 } ) & 0x07 ) ) );

      $Locals_rgb = substr ( $this->BUF [ $i ], 13,

                     3 * ( 2 << ( ord ( $this->BUF [ $i ] { 10 } ) & 0x07 ) ) );

      $Locals_ext = "!\xF9\x04" . chr ( ( $this->DIS << 2 ) + 0 ) .

                  chr ( ( $d >> 0 ) & 0xFF ) . chr ( ( $d >> 8 ) & 0xFF ) . "\x0\x0";

      if ( $this->COL > -1 && ord ( $this->BUF [ $i ] { 10 } ) & 0x80 ) {

         for ( $j = 0; $j < ( 2 << ( ord ( $this->BUF [ $i ] { 10 } ) & 0x07 ) ); $j++ ) {

            if (

                  ord ( $Locals_rgb { 3 * $j + 0 } ) == ( ( $this->COL >> 16 ) & 0xFF ) &&

                  ord ( $Locals_rgb { 3 * $j + 1 } ) == ( ( $this->COL >>  8 ) & 0xFF ) &&

                  ord ( $Locals_rgb { 3 * $j + 2 } ) == ( ( $this->COL >>  0 ) & 0xFF )

               ) {

               $Locals_ext = "!\xF9\x04" . chr ( ( $this->DIS << 2 ) + 1 ) .

                           chr ( ( $d >> 0 ) & 0xFF ) . chr ( ( $d >> 8 ) & 0xFF ) . chr ( $j ) . "\x0";

               break;

            }

         }

      }

      switch ( $Locals_tmp { 0 } ) {

         case "!":

            $Locals_img = substr ( $Locals_tmp, 8, 10 );

            $Locals_tmp = substr ( $Locals_tmp, 18, strlen ( $Locals_tmp ) - 18 );

            break;

         case ",":

            $Locals_img = substr ( $Locals_tmp, 0, 10 );

            $Locals_tmp = substr ( $Locals_tmp, 10, strlen ( $Locals_tmp ) - 10 );

            break;

      }

      if ( ord ( $this->BUF [ $i ] { 10 } ) & 0x80 && $this->IMG > -1 ) {

         if ( $Global_len == $Locals_len ) {

            if ( $this->GIFBlockCompare ( $Global_rgb, $Locals_rgb, $Global_len ) ) {

               $this->GIF .= ( $Locals_ext . $Locals_img . $Locals_tmp );

            }

            else {

               $byte  = ord ( $Locals_img { 9 } );

               $byte |= 0x80;

               $byte &= 0xF8;

               $byte |= ( ord ( $this->BUF [ 0 ] { 10 } ) & 0x07 );

               $Locals_img { 9 } = chr ( $byte );

               $this->GIF .= ( $Locals_ext . $Locals_img . $Locals_rgb . $Locals_tmp );

            }

         }

         else {

            $byte  = ord ( $Locals_img { 9 } );

            $byte |= 0x80;

            $byte &= 0xF8;

            $byte |= ( ord ( $this->BUF [ $i ] { 10 } ) & 0x07 );

            $Locals_img { 9 } = chr ( $byte );

            $this->GIF .= ( $Locals_ext . $Locals_img . $Locals_rgb . $Locals_tmp );

         }

      }

      else {

         $this->GIF .= ( $Locals_ext . $Locals_img . $Locals_tmp );

      }

      $this->IMG  = 1;

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFAddFooter...

   ::

   */

   private function GIFAddFooter ( ) {

      $this->GIF .= ";";

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFBlockCompare...

   ::

   */

   private function GIFBlockCompare ( $GlobalBlock, $LocalBlock, $Len ) {

      for ( $i = 0; $i < $Len; $i++ ) {

         if (

               $GlobalBlock { 3 * $i + 0 } != $LocalBlock { 3 * $i + 0 } ||

               $GlobalBlock { 3 * $i + 1 } != $LocalBlock { 3 * $i + 1 } ||

               $GlobalBlock { 3 * $i + 2 } != $LocalBlock { 3 * $i + 2 }

            ) {

               return ( 0 );

         }

      }

      return ( 1 );

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFWord...

   ::

   */

   private function GIFWord ( $int ) {

      return ( chr ( $int & 0xFF ) . chr ( ( $int >> 8 ) & 0xFF ) );

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GetAnimation...

   ::

   */

   public function GetAnimation ( ) {

      return ( $this->GIF );

   }

}

/*

:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

::

:: GIFDecoder Version 2.0 by László Zsidi, http://gifs.hu

::

:: Created at 2007. 02. 01. &#39;07.47.AM&#39;

::

::

::

::

::  Try on-line GIFBuilder Form demo based on GIFDecoder.

::

::  http://gifs.hu/phpclasses/demos/GifBuilder/

::

:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

*/

Class GIFDecoder {

   private $GIF_buffer = Array ( );

   private $GIF_arrays = Array ( );

   private $GIF_delays = Array ( );

   private $GIF_stream = "";

   private $GIF_string = "";

   private $GIF_bfseek =  0;

   private $GIF_screen = Array ( );

   private $GIF_global = Array ( );

   private $GIF_sorted;

   private $GIF_colorS;

   private $GIF_colorC;

   private $GIF_colorF;

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFDecoder ( $GIF_pointer )

   ::

   */

   public function __construct ( $GIF_pointer ) {

      $this->GIF_stream = $GIF_pointer;

      $this->GIFGetByte ( 6 );   // GIF89a

      $this->GIFGetByte ( 7 );   // Logical Screen Descriptor

      $this->GIF_screen = $this->GIF_buffer;

      $this->GIF_colorF = $this->GIF_buffer [ 4 ] & 0x80 ? 1 : 0;

      $this->GIF_sorted = $this->GIF_buffer [ 4 ] & 0x08 ? 1 : 0;

      $this->GIF_colorC = $this->GIF_buffer [ 4 ] & 0x07;

      $this->GIF_colorS = 2 << $this->GIF_colorC;

      if ( $this->GIF_colorF == 1 ) {

         $this->GIFGetByte ( 3 * $this->GIF_colorS );

         $this->GIF_global = $this->GIF_buffer;

      }

      /*

       *

       *  05.06.2007.

       *  Made a little modification

       *

       *

       - for ( $cycle = 1; $cycle; ) {

       +    if ( GIFDecoder::GIFGetByte ( 1 ) ) {

       -       switch ( $this->GIF_buffer [ 0 ] ) {

       -          case 0x21:

       -             GIFDecoder::GIFReadExtensions ( );

       -             break;

       -          case 0x2C:

       -             GIFDecoder::GIFReadDescriptor ( );

       -             break;

       -          case 0x3B:

       -             $cycle = 0;

       -             break;

       -       }

       -    }

       +    else {

       +       $cycle = 0;

       +    }

       - }

      */

      for ( $cycle = 1; $cycle; ) {

         if ( $this->GIFGetByte ( 1 ) ) {

            switch ( $this->GIF_buffer [ 0 ] ) {

               case 0x21:

                  $this->GIFReadExtensions ( );

                  break;

               case 0x2C:

                  $this->GIFReadDescriptor ( );

                  break;

               case 0x3B:

                  $cycle = 0;

                  break;

            }

         }

         else {

            $cycle = 0;

         }

      }

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFReadExtension ( )

   ::

   */

   private function GIFReadExtensions ( ) {

      $this->GIFGetByte ( 1 );

      for ( ; ; ) {

         $this->GIFGetByte ( 1 );

         if ( ( $u = $this->GIF_buffer [ 0 ] ) == 0x00 ) {

            break;

         }

         $this->GIFGetByte ( $u );

         /*

          * 07.05.2007.

          * Implemented a new line for a new function

          * to determine the originaly delays between

          * frames.

          *

          */

         if ( $u == 4 ) {

            $this->GIF_delays [ ] = ( $this->GIF_buffer [ 1 ] | $this->GIF_buffer [ 2 ] << 8 );

         }

      }

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFReadExtension ( )

   ::

   */

   private function GIFReadDescriptor ( ) {

      $GIF_screen    = Array ( );

      $this->GIFGetByte ( 9 );

      $GIF_screen = $this->GIF_buffer;

      $GIF_colorF = $this->GIF_buffer [ 8 ] & 0x80 ? 1 : 0;

      if ( $GIF_colorF ) {

         $GIF_code = $this->GIF_buffer [ 8 ] & 0x07;

         $GIF_sort = $this->GIF_buffer [ 8 ] & 0x20 ? 1 : 0;

      }

      else {

         $GIF_code = $this->GIF_colorC;

         $GIF_sort = $this->GIF_sorted;

      }

      $GIF_size = 2 << $GIF_code;

      $this->GIF_screen [ 4 ] &= 0x70;

      $this->GIF_screen [ 4 ] |= 0x80;

      $this->GIF_screen [ 4 ] |= $GIF_code;

      if ( $GIF_sort ) {

         $this->GIF_screen [ 4 ] |= 0x08;

      }

      $this->GIF_string = "GIF87a";

      $this->GIFPutByte ( $this->GIF_screen );

      if ( $GIF_colorF == 1 ) {

         $this->GIFGetByte ( 3 * $GIF_size );

         $this->GIFPutByte ( $this->GIF_buffer );

      }

      else {

         $this->GIFPutByte ( $this->GIF_global );

      }

      $this->GIF_string .= chr ( 0x2C );

      $GIF_screen [ 8 ] &= 0x40;

      $this->GIFPutByte ( $GIF_screen );

      $this->GIFGetByte ( 1 );

      $this->GIFPutByte ( $this->GIF_buffer );

      for ( ; ; ) {

         $this->GIFGetByte ( 1 );

         $this->GIFPutByte ( $this->GIF_buffer );

         if ( ( $u = $this->GIF_buffer [ 0 ] ) == 0x00 ) {

            break;

         }

         $this->GIFGetByte ( $u );

         $this->GIFPutByte ( $this->GIF_buffer );

      }

      $this->GIF_string .= chr ( 0x3B );

      /*

         Add frames into $GIF_stream array...

      */

      $this->GIF_arrays [ ] = $this->GIF_string;

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFGetByte ( $len )

   ::

   */

   /*

    *

    *  05.06.2007.

    *  Made a little modification

    *

    *

    - function GIFGetByte ( $len ) {

    -    $this->GIF_buffer = Array ( );

    -

    -    for ( $i = 0; $i < $len; $i++ ) {

    +       if ( $this->GIF_bfseek > strlen ( $this->GIF_stream ) ) {

    +          return 0;

    +       }

    -       $this->GIF_buffer [ ] = ord ( $this->GIF_stream { $this->GIF_bfseek++ } );

    -    }

    +    return 1;

    - }

    */

   private function GIFGetByte ( $len ) {

      $this->GIF_buffer = Array ( );

      for ( $i = 0; $i < $len; $i++ ) {

         if ( $this->GIF_bfseek > strlen ( $this->GIF_stream ) ) {

            return 0;

         }

         $this->GIF_buffer [ ] = ord ( $this->GIF_stream { $this->GIF_bfseek++ } );

      }

      return 1;

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFPutByte ( $bytes )

   ::

   */

   private function GIFPutByte ( $bytes ) {

      for ( $i = 0; $i < count ( $bytes ); $i++ ) {

         $this->GIF_string .= chr ( $bytes [ $i ] );

      }

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: PUBLIC FUNCTIONS

   ::

   ::

   :: GIFGetFrames ( )

   ::

   */

   public function GIFGetFrames ( ) {

      return ( $this->GIF_arrays );

   }

   /*

   :::::::::::::::::::::::::::::::::::::::::::::::::::

   ::

   :: GIFGetDelays ( )

   ::

   */

   public function GIFGetDelays ( ) {

      return ( $this->GIF_delays );

   }

}

Copy after login

3. [文件] Imagick.class.php

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

<?php

namespace YBL;

class Imagick{

    /**

     * 图像资源对象

     * @var resource

     */

    private $img;

    /**

     * 图像信息,包括width,height,type,mime,size

     * @var array

     */

    private $info;

    private $gif_proess;  

    public $error;

    

    /**

     * 构造方法,可用于打开一张图像

     * @param string $imgname 图像路径

     */

    public function __construct($gif_proess=true) {

          $this->gif_proess=$gif_proess;

    }

    /**

     * 打开一张图像

     * @param  string $imgname 图像路径

     */

    public function open($imgname){

        //检测图像文件

        if(!is_file($imgname)){

         $this->error=&#39;不存在的图像文件&#39;;

         return false;

      }

        //销毁已存在的图像

        empty($this->img) || $this->img->destroy();

        //载入图像

        $this->img = new Imagick(realpath($imgname));

        //设置图像信息

        $this->info = array(

            &#39;width&#39;  => $this->img->getImageWidth(),

            &#39;height&#39; => $this->img->getImageHeight(),

            &#39;type&#39;   => strtolower($this->img->getImageFormat()),

            &#39;mime&#39;   => $this->img->getImageMimeType(),

        );

    }

    /**

     * 保存图像

     * @param  string  $imgname   图像保存名称

     * @param  string  $type      图像类型

     * @param  integer $quality   JPEG图像质量     

     * @param  boolean $interlace 是否对JPEG类型图像设置隔行扫描

     */

    public function save($imgname, $type = null, $quality=80,$interlace = true){

        if(empty($this->img)){

         $this->error=&#39;没有可以被保存的图像资源&#39;;

         return false;

      }

        //设置图片类型

        if(is_null($type)){

            $type = $this->info[&#39;type&#39;];

        } else {

            $type = strtolower($type);

            $this->img->setImageFormat($type);

        }

        //JPEG图像设置隔行扫描

        if(&#39;jpeg&#39; == $type || &#39;jpg&#39; == $type){

            $this->img->setImageInterlaceScheme(1);

        }

        // 设置图像质量

        $this->img->setImageCompressionQuality($quality);

        //去除图像配置信息

        $this->img->stripImage();

        //保存图像

        $imgname = realpath(dirname($imgname)) . &#39;/&#39; . basename($imgname); //强制绝对路径

        if ((&#39;gif&#39; == $type)&&$this->gif_proess) {

            $this->img->writeImages($imgname, true);

        } else {

            $this->img->writeImage($imgname);

        }

    }

    /**

     * 返回图像宽度

     * @return integer 图像宽度

     */

    public function width(){

        if(empty($this->img)){

         $this->error=&#39;没有指定图像资源&#39;;

         return false;

      }

        return $this->info[&#39;width&#39;];

    }

    /**

     * 返回图像高度

     * @return integer 图像高度

     */

    public function height(){

        if(empty($this->img)){

         $this->error=&#39;没有指定图像资源&#39;;

         return false;

      }

        return $this->info[&#39;height&#39;];

    }

    /**

     * 返回图像类型

     * @return string 图像类型

     */

    public function type(){

        if(empty($this->img)){

         $this->error=&#39;没有指定图像资源&#39;;

         return false;

      }

        return $this->info[&#39;type&#39;];

    }

    /**

     * 返回图像MIME类型

     * @return string 图像MIME类型

     */

    public function mime(){

        if(empty($this->img)){

         $this->error=&#39;没有指定图像资源&#39;;

         return false;

      }

        return $this->info[&#39;mime&#39;];

    }

    /**

     * 返回图像尺寸数组 0 - 图像宽度,1 - 图像高度

     * @return array 图像尺寸

     */

    public function size(){

        if(empty($this->img)){

         $this->error=&#39;没有指定图像资源&#39;;

         return false;

      }

        return array($this->info[&#39;width&#39;], $this->info[&#39;height&#39;]);

    }

    /**

     * 裁剪图像

     * @param  integer $w      裁剪区域宽度

     * @param  integer $h      裁剪区域高度

     * @param  integer $x      裁剪区域x坐标

     * @param  integer $y      裁剪区域y坐标

     * @param  integer $width  图像保存宽度

     * @param  integer $height 图像保存高度

     */

    public function crop($w, $h, $x = 0, $y = 0, $width = null, $height = null){

        if(empty($this->img)){

         $this->error=&#39;没有可以被裁剪的图像资源&#39;;

         return false;

      }

        //设置保存尺寸

        empty($width)  && $width  = $w;

        empty($height) && $height = $h;

        //裁剪图片

        if((&#39;gif&#39; == $this->info[&#39;type&#39;])&&$this->gif_proess){

            $img = $this->img->coalesceImages();

            $this->img->destroy(); //销毁原图

            //循环裁剪每一帧

            do {

                $this->_crop($w, $h, $x, $y, $width, $height, $img);

            } while ($img->nextImage());

             

            //压缩图片

            $this->img = $img->deconstructImages();

            $img->destroy(); //销毁零时图片

        } else {

            $this->_crop($w, $h, $x, $y, $width, $height);

        }

    }

    /* 裁剪图片,内部调用 */

    private function _crop($w, $h, $x, $y, $width, $height, $img = null){

        is_null($img) && $img = $this->img;

        //裁剪

        $info = $this->info;

        if($x != 0 || $y != 0 || $w != $info[&#39;width&#39;] || $h != $info[&#39;height&#39;]){

            $img->cropImage($w, $h, $x, $y);

            $img->setImagePage($w, $h, 0, 0); //调整画布和图片一致

        }

         

        //调整大小

        if($w != $width || $h != $height){

            $img->sampleImage($width, $height);

        }

        //设置缓存尺寸

        $this->info[&#39;width&#39;]  = $w;

        $this->info[&#39;height&#39;] = $h;

    }

    /**

     * 生成缩略图

     * @param  integer $width  缩略图最大宽度

     * @param  integer $height 缩略图最大高度

     * @param  integer $type   缩略图裁剪类型

     */

    public function thumb($width, $height, $type = Image::IMAGE_THUMB_SCALE){

        if(empty($this->img)){

         $this->error=&#39;没有可以被缩略的图像资源&#39;;

         return false;

      }

        //原图宽度和高度

        $w = $this->info[&#39;width&#39;];

        $h = $this->info[&#39;height&#39;];

        /* 计算缩略图生成的必要参数 */

        switch ($type) {

            /* 等比例缩放 */

            case Image::IMAGE_THUMB_SCALE:

                //原图尺寸小于缩略图尺寸则不进行缩略

                if($w < $width && $h < $height) return;

                //计算缩放比例

                $scale = min($width/$w, $height/$h);

                 

                //设置缩略图的坐标及宽度和高度

                $x = $y = 0;

                $width  = $w * $scale;

                $height = $h * $scale;

                break;

            /* 居中裁剪 */

            case Image::IMAGE_THUMB_CENTER:

                //计算缩放比例

                $scale = max($width/$w, $height/$h);

                //设置缩略图的坐标及宽度和高度

                $w = $width/$scale;

                $h = $height/$scale;

                $x = ($this->info[&#39;width&#39;] - $w)/2;

                $y = ($this->info[&#39;height&#39;] - $h)/2;

                break;

            /* 左上角裁剪 */

            case Image::IMAGE_THUMB_NORTHWEST:

                //计算缩放比例

                $scale = max($width/$w, $height/$h);

                //设置缩略图的坐标及宽度和高度

                $x = $y = 0;

                $w = $width/$scale;

                $h = $height/$scale;

                break;

            /* 右下角裁剪 */

            case Image::IMAGE_THUMB_SOUTHEAST:

                //计算缩放比例

                $scale = max($width/$w, $height/$h);

                //设置缩略图的坐标及宽度和高度

                $w = $width/$scale;

                $h = $height/$scale;

                $x = $this->info[&#39;width&#39;] - $w;

                $y = $this->info[&#39;height&#39;] - $h;

                break;

            /* 填充 */

            case Image::IMAGE_THUMB_FILLED:

                //计算缩放比例

                if($w < $width && $h < $height){

                    $scale = 1;

                } else {

                    $scale = min($width/$w, $height/$h);

                }

                //设置缩略图的坐标及宽度和高度

                $neww = $w * $scale;

                $newh = $h * $scale;

                $posx = ($width  - $w * $scale)/2;

                $posy = ($height - $h * $scale)/2;

                //创建一张新图像

                $newimg = new Imagick();

                $newimg->newImage($width, $height, &#39;white&#39;, $this->info[&#39;type&#39;]);

                if((&#39;gif&#39; == $this->info[&#39;type&#39;])$this->gif_proess){

                    $imgs = $this->img->coalesceImages();

                    $img  = new Imagick();

                    $this->img->destroy(); //销毁原图

                    //循环填充每一帧

                    do {

                        //填充图像

                        $image = $this->_fill($newimg, $posx, $posy, $neww, $newh, $imgs);

                         

                        $img->addImage($image);

                        $img->setImageDelay($imgs->getImageDelay());

                        $img->setImagePage($width, $height, 0, 0);

                        $image->destroy(); //销毁零时图片

                    } while ($imgs->nextImage());

                    //压缩图片

                    $this->img->destroy();

                    $this->img = $img->deconstructImages();

                    $imgs->destroy(); //销毁零时图片

                    $img->destroy(); //销毁零时图片

                } else {

                    //填充图像

                    $img = $this->_fill($newimg, $posx, $posy, $neww, $newh);

                    //销毁原图

                    $this->img->destroy();

                    $this->img = $img;

                }

                //设置新图像属性

                $this->info[&#39;width&#39;]  = $width;

                $this->info[&#39;height&#39;] = $height;

                return;

            /* 固定 */

            case Image::IMAGE_THUMB_FIXED:

                $x = $y = 0;

                break;

            default:$this->error=&#39;不支持的缩略图裁剪类型&#39;;

         return false;

                 

        }

        /* 裁剪图像 */

        $this->crop($w, $h, $x, $y, $width, $height);

    }

    /* 填充指定图像,内部使用 */

    private function _fill($newimg, $posx, $posy, $neww, $newh, $img = null){

        is_null($img) && $img = $this->img;

        /* 将指定图片绘入空白图片 */

        $draw  = new \ImagickDraw();

        $draw->composite($img->getImageCompose(), $posx, $posy, $neww, $newh, $img);

        $image = $newimg->clone();

        $image->drawImage($draw);

        $draw->destroy();

        return $image;

    }

    /**

     * 添加水印

     * @param  string  $source 水印图片路径

     * @param  integer $locate 水印位置

     * @param  integer $alpha  水印透明度

     */

    public function water($source, $locate = Image::IMAGE_WATER_SOUTHEAST,$alpha=80){

        //资源检测

        if(empty($this->img)){$this->error=&#39;没有可以被添加水印的图像资源&#39;;

         return false;}

        if(!is_file($source)){

         $this->error=&#39;水印图像不存在&#39;;

         return false;

      }

        //创建水印图像资源

        $water = new Imagick(realpath($source));

        $info  = array($water->getImageWidth(), $water->getImageHeight());

        /* 设定水印位置 */

        switch ($locate) {

            /* 右下角水印 */

            case Image::IMAGE_WATER_SOUTHEAST:

                $x = $this->info[&#39;width&#39;] - $info[0];

                $y = $this->info[&#39;height&#39;] - $info[1];

                break;

            /* 左下角水印 */

            case Image::IMAGE_WATER_SOUTHWEST:

                $x = 0;

                $y = $this->info[&#39;height&#39;] - $info[1];

                break;

            /* 左上角水印 */

            case Image::IMAGE_WATER_NORTHWEST:

                $x = $y = 0;

                break;

            /* 右上角水印 */

            case Image::IMAGE_WATER_NORTHEAST:

                $x = $this->info[&#39;width&#39;] - $info[0];

                $y = 0;

                break;

            /* 居中水印 */

            case Image::IMAGE_WATER_CENTER:

                $x = ($this->info[&#39;width&#39;] - $info[0])/2;

                $y = ($this->info[&#39;height&#39;] - $info[1])/2;

                break;

            /* 下居中水印 */

            case Image::IMAGE_WATER_SOUTH:

                $x = ($this->info[&#39;width&#39;] - $info[0])/2;

                $y = $this->info[&#39;height&#39;] - $info[1];

                break;

            /* 右居中水印 */

            case Image::IMAGE_WATER_EAST:

                $x = $this->info[&#39;width&#39;] - $info[0];

                $y = ($this->info[&#39;height&#39;] - $info[1])/2;

                break;

            /* 上居中水印 */

            case Image::IMAGE_WATER_NORTH:

                $x = ($this->info[&#39;width&#39;] - $info[0])/2;

                $y = 0;

                break;

            /* 左居中水印 */

            case Image::IMAGE_WATER_WEST:

                $x = 0;

                $y = ($this->info[&#39;height&#39;] - $info[1])/2;

                break;

            default:

                /* 自定义水印坐标 */

                if(is_array($locate)){

                    list($x, $y) = $locate;

                } else {

               $this->error=&#39;不支持的水印位置类型&#39;;

         return false;

                }

        }

        //创建绘图资源

        $draw = new \ImagickDraw();

        $draw->composite($water->getImageCompose(), $x, $y, $info[0], $info[1], $water);

         

        if((&#39;gif&#39; == $this->info[&#39;type&#39;])&&$this->gif_proess){

            $img = $this->img->coalesceImages();

            $this->img->destroy(); //销毁原图

            do{

                //添加水印

                $img->drawImage($draw);

            } while ($img->nextImage());

            //压缩图片

            $this->img = $img->deconstructImages();

            $img->destroy(); //销毁零时图片

        } else {

            //添加水印

            $this->img->drawImage($draw);

        }

        //销毁水印资源

        $draw->destroy();

        $water->destroy();

    }

    /**

     * 图像添加文字

     * @param  string  $text   添加的文字

     * @param  string  $font   字体路径

     * @param  integer $size   字号

     * @param  string  $color  文字颜色

     * @param  integer $locate 文字写入位置

     * @param  integer $offset 文字相对当前位置的偏移量

     * @param  integer $angle  文字倾斜角度

     */

    public function text($text, $font, $size, $color = &#39;#00000000&#39;,

        $locate = Image::IMAGE_WATER_SOUTHEAST, $offset = 0, $angle = 0){

        //资源检测

        if(empty($this->img)){$this->error=&#39;没有可以被写入文字的图像资源&#39;;

         return false;}

        if(!is_file($font)){

         $this->error="不存在的字体文件:{$font}";

         return false;

      }

        //获取颜色和透明度

        if(is_array($color)){

            $color = array_map(&#39;dechex&#39;, $color);

            foreach ($color as &$value) {

                $value = str_pad($value, 2, &#39;0&#39;, STR_PAD_LEFT);

            }

            $color = &#39;#&#39; . implode(&#39;&#39;, $color);

        } elseif(!is_string($color) || 0 !== strpos($color, &#39;#&#39;)) {

            $this->error=&#39;错误的颜色值&#39;;

         return false;

        }

        $col = substr($color, 0, 7);

        $alp = strlen($color) == 9 ? substr($color, -2) : 0;

         

        //获取文字信息

        $draw = new \ImagickDraw();

        $draw->setFont(realpath($font));

        $draw->setFontSize($size);

        $draw->setFillColor($col);

        $draw->setFillAlpha(1-hexdec($alp)/127);

        $draw->setTextAntialias(true);

        $draw->setStrokeAntialias(true);

         

        $metrics = $this->img->queryFontMetrics($draw, $text);

        /* 计算文字初始坐标和尺寸 */

        $x = 0;

        $y = $metrics[&#39;ascender&#39;];

        $w = $metrics[&#39;textWidth&#39;];

        $h = $metrics[&#39;textHeight&#39;];

        /* 设定文字位置 */

        switch ($locate) {

            /* 右下角文字 */

            case Image::IMAGE_WATER_SOUTHEAST:

                $x += $this->info[&#39;width&#39;]  - $w;

                $y += $this->info[&#39;height&#39;] - $h;

                break;

            /* 左下角文字 */

            case Image::IMAGE_WATER_SOUTHWEST:

                $y += $this->info[&#39;height&#39;] - $h;

                break;

            /* 左上角文字 */

            case Image::IMAGE_WATER_NORTHWEST:

                // 起始坐标即为左上角坐标,无需调整

                break;

            /* 右上角文字 */

            case Image::IMAGE_WATER_NORTHEAST:

                $x += $this->info[&#39;width&#39;] - $w;

                break;

            /* 居中文字 */

            case Image::IMAGE_WATER_CENTER:

                $x += ($this->info[&#39;width&#39;]  - $w)/2;

                $y += ($this->info[&#39;height&#39;] - $h)/2;

                break;

            /* 下居中文字 */

            case Image::IMAGE_WATER_SOUTH:

                $x += ($this->info[&#39;width&#39;] - $w)/2;

                $y += $this->info[&#39;height&#39;] - $h;

                break;

            /* 右居中文字 */

            case Image::IMAGE_WATER_EAST:

                $x += $this->info[&#39;width&#39;] - $w;

                $y += ($this->info[&#39;height&#39;] - $h)/2;

                break;

            /* 上居中文字 */

            case Image::IMAGE_WATER_NORTH:

                $x += ($this->info[&#39;width&#39;] - $w)/2;

                break;

            /* 左居中文字 */

            case Image::IMAGE_WATER_WEST:

                $y += ($this->info[&#39;height&#39;] - $h)/2;

                break;

            default:

                /* 自定义文字坐标 */

                if(is_array($locate)){

                    list($posx, $posy) = $locate;

                    $x += $posx;

                    $y += $posy;

                } else {

               $this->error=&#39;不支持的文字位置类型&#39;;

         return false;

                  

                }

        }

        /* 设置偏移量 */

        if(is_array($offset)){

            $offset = array_map(&#39;intval&#39;, $offset);

            list($ox, $oy) = $offset;

        } else{

            $offset = intval($offset);

            $ox = $oy = $offset;

        }

        /* 写入文字 */

        if((&#39;gif&#39; == $this->info[&#39;type&#39;])&&$this->gif_proess){

            $img = $this->img->coalesceImages();

            $this->img->destroy(); //销毁原图

            do{

                $img->annotateImage($draw, $x + $ox, $y + $oy, $angle, $text);

            } while ($img->nextImage());

            //压缩图片

            $this->img = $img->deconstructImages();

            $img->destroy(); //销毁零时图片

        } else {

            $this->img->annotateImage($draw, $x + $ox, $y + $oy, $angle, $text);

        }

        $draw->destroy();

    }

    /**

     * 析构方法,用于销毁图像资源

     */

    public function __destruct() {

        empty($this->img) || $this->img->destroy();

    }

}

Copy after login

4. [文件] image.php

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

<?php

namespace YBL;

set_time_limit(0);

require_once(&#39;../lib/image/Image.class.php&#39;);

$source=&#39;image/ybl.gif&#39;;

$image=new image(1);

//========================================================================

//打开一幅图像

$image->open($source);

echo &#39;图片宽度:&#39;.$image->width(),&#39;<br/>&#39;;

echo &#39;图片高度:&#39;.$image->height(),&#39;<br/>&#39;;

echo &#39;图片类型:&#39;.$image->type(),&#39;<br/>&#39;;

echo &#39;图像MIME类型:&#39;.$image->mime(),&#39;<br/>&#39;;

$size=$image->size();

echo &#39;图片宽度:&#39;.$size[0],&#39;<br/>&#39;;

echo &#39;图片高度:&#39;.$size[1],&#39;<br/>&#39;;

$savename=&#39;image/save.gif&#39;;

//保存图片

//参数 图片保存地址,图片类型,图像质量,是否对JPEG类型图片设置隔行扫描

 $image->save($savename);

$wh=2;

//======================================================================

//生成缩略图

//参数 缩略图最大宽度,缩略图最大高度,缩略图裁剪类型

$image->thumb($size[0]*$wh,$size[1]*$wh,5);

$savename=&#39;image/thumb.gif&#39;;

$image->save($savename);

//=================================================================================

//图像添加文字

$text=&#39;你好!!!文字&#39;;

//字体类型

$fonturl=&#39;image/simhei.ttf&#39;;

//字体大小

$fontsize=&#39;20&#39;;

//字体颜色

$fontcolor=&#39;#FFF&#39;;

//字体倾斜度

$fontxdu=20;

//参数 添加的文字,字体路径,字号,文字颜色,文字写入位置,文字相对当前位置的偏移量,文字倾斜角度

$image->text($text,$fonturl,$fontsize,$fontcolor,array(100,100),0,$fontxdu);

$savename=&#39;image/text.gif&#39;;

$image->save($savename);

//=================================================================================

//打水印

$alpha=80;

$water=&#39;image/water.png&#39;;

//数组表示 水印位置

//数字 水印位置类型

$xy=array(120,20);

//参数  水印图片路径,水印位置,水印透明度

$image->water($water,$xy,$alpha);

$savename=&#39;image/water_aim.gif&#39;;

$image->save($savename);

//=================================================================================

//裁剪图像

//参数  裁剪区域宽度,裁剪区域高度,裁剪区域x坐标,裁剪区域y坐标,图片保存宽度,图片保存高度

$image->crop(100,100,100,100);

$savename=&#39;image/crop.gif&#39;;

$image->save($savename);

Copy after login

                               


                   

Related labels:
php
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template