source: trunk/client/modules/Elezioni/grafici/gd_image.inc.php@ 392

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1<?php
2//=======================================================================
3// File: GD_IMAGE.INC.PHP
4// Description: PHP Graph Plotting library. Low level image drawing routines
5// Created: 2001-01-08, refactored 2008-03-29
6// Ver: $Id: gd_image.inc.php 1922 2010-01-11 11:42:50Z ljp $
7//
8// Copyright (c) Asial Corporation. All rights reserved.
9//========================================================================
10
11require_once 'jpgraph_rgb.inc.php';
12require_once 'jpgraph_ttf.inc.php';
13require_once 'imageSmoothArc.php';
14require_once 'jpgraph_errhandler.inc.php';
15
16// Line styles
17define('LINESTYLE_SOLID',1);
18define('LINESTYLE_DOTTED',2);
19define('LINESTYLE_DASHED',3);
20define('LINESTYLE_LONGDASH',4);
21
22// The DEFAULT_GFORMAT sets the default graphic encoding format, i.e.
23// PNG, JPG or GIF depending on what is installed on the target system
24// in that order.
25if( !DEFINED("DEFAULT_GFORMAT") ) {
26 define("DEFAULT_GFORMAT","auto");
27}
28
29//========================================================================
30// CLASS Image
31// Description: The very coor image drawing class that encapsulates all
32// calls to the GD library
33// Note: The class used by the library is the decendant
34// class RotImage which extends the Image class with transparent
35// rotation.
36//=========================================================================
37class Image {
38 public $img=null;
39 public $rgb=null;
40 public $img_format;
41 public $ttf=null;
42 public $line_style=LINESTYLE_SOLID;
43 public $current_color,$current_color_name;
44 public $original_width=0, $original_height=0;
45 public $plotwidth=0,$plotheight=0;
46
47 // for __get, __set
48 private $_left_margin=30,$_right_margin=30,$_top_margin=20,$_bottom_margin=30;
49 //private $_plotwidth=0,$_plotheight=0;
50 private $_width=0, $_height=0;
51 private $_line_weight=1;
52
53 protected $expired=true;
54 protected $lastx=0, $lasty=0;
55 protected $obs_list=array();
56 protected $font_size=12,$font_family=FF_DEFAULT, $font_style=FS_NORMAL;
57 protected $font_file='';
58 protected $text_halign="left",$text_valign="bottom";
59 protected $use_anti_aliasing=false;
60 protected $quality=null;
61 protected $colorstack=array(),$colorstackidx=0;
62 protected $canvascolor = 'white' ;
63 protected $langconv = null ;
64 protected $iInterlace=false;
65 protected $bbox_cache = array(); // STore the last found tetx bounding box
66 protected $ff_font0;
67 protected $ff_font0_bold;
68 protected $ff_font1;
69 protected $ff_font1_bold;
70 protected $ff_font2;
71 protected $ff_font2_bold;
72
73
74 //---------------
75 // CONSTRUCTOR
76 function __construct($aWidth=0,$aHeight=0,$aFormat=DEFAULT_GFORMAT,$aSetAutoMargin=true) {
77
78 $this->original_width = $aWidth;
79 $this->original_height = $aHeight;
80 $this->CreateImgCanvas($aWidth, $aHeight);
81
82 if( $aSetAutoMargin ) {
83 $this->SetAutoMargin();
84 }
85
86 if( !$this->SetImgFormat($aFormat) ) {
87 JpGraphError::RaiseL(25081,$aFormat);//("JpGraph: Selected graphic format is either not supported or unknown [$aFormat]");
88 }
89 $this->ttf = new TTF();
90 $this->langconv = new LanguageConv();
91
92 $this->ff_font0 = imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT0.gdf");
93 $this->ff_font1 = imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT1.gdf");
94 $this->ff_font2 = imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT2.gdf");
95 $this->ff_font1_bold = imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT1-Bold.gdf");
96 $this->ff_font2_bold = imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT2-Bold.gdf");
97 }
98
99 // Enable interlacing in images
100 function SetInterlace($aFlg=true) {
101 $this->iInterlace=$aFlg;
102 }
103
104 // Should we use anti-aliasing. Note: This really slows down graphics!
105 function SetAntiAliasing($aFlg=true) {
106 $this->use_anti_aliasing = $aFlg;
107 if( function_exists('imageantialias') ) {
108 imageantialias($this->img,$aFlg);
109 }
110 else {
111 JpGraphError::RaiseL(25128);//('The function imageantialias() is not available in your PHP installation. Use the GD version that comes with PHP and not the standalone version.')
112 }
113 }
114
115 function GetAntiAliasing() {
116 return $this->use_anti_aliasing ;
117 }
118
119 function CreateRawCanvas($aWidth=0,$aHeight=0) {
120
121 $aWidth *= SUPERSAMPLING_SCALE;
122 $aHeight *= SUPERSAMPLING_SCALE;
123
124 if( $aWidth <= 1 || $aHeight <= 1 ) {
125 JpGraphError::RaiseL(25082,$aWidth,$aHeight);//("Illegal sizes specified for width or height when creating an image, (width=$aWidth, height=$aHeight)");
126 }
127
128 $this->img = @imagecreatetruecolor($aWidth, $aHeight);
129 if( $this->img < 1 ) {
130 JpGraphError::RaiseL(25126);
131 //die("Can't create truecolor image. Check that you really have GD2 library installed.");
132 }
133 $this->SetAlphaBlending();
134
135 if( $this->iInterlace ) {
136 imageinterlace($this->img,1);
137 }
138 if( $this->rgb != null ) {
139 $this->rgb->img = $this->img ;
140 }
141 else {
142 $this->rgb = new RGB($this->img);
143 }
144 }
145
146 function CloneCanvasH() {
147 $oldimage = $this->img;
148 $this->CreateRawCanvas($this->width,$this->height);
149 imagecopy($this->img,$oldimage,0,0,0,0,$this->width,$this->height);
150 return $oldimage;
151 }
152
153 function CreateImgCanvas($aWidth=0,$aHeight=0) {
154
155 $old = array($this->img,$this->width,$this->height);
156
157 $aWidth = round($aWidth);
158 $aHeight = round($aHeight);
159
160 $this->width=$aWidth;
161 $this->height=$aHeight;
162
163
164 if( $aWidth==0 || $aHeight==0 ) {
165 // We will set the final size later.
166 // Note: The size must be specified before any other
167 // img routines that stroke anything are called.
168 $this->img = null;
169 $this->rgb = null;
170 return $old;
171 }
172
173 $this->CreateRawCanvas($aWidth,$aHeight);
174 // Set canvas color (will also be the background color for a
175 // a pallett image
176 $this->SetColor($this->canvascolor);
177 $this->FilledRectangle(0,0,$this->width-1,$this->height-1);
178
179 return $old ;
180 }
181
182 function CopyCanvasH($aToHdl,$aFromHdl,$aToX,$aToY,$aFromX,$aFromY,$aWidth,$aHeight,$aw=-1,$ah=-1) {
183 if( $aw === -1 ) {
184 $aw = $aWidth;
185 $ah = $aHeight;
186 $f = 'imagecopyresized';
187 }
188 else {
189 $f = 'imagecopyresampled';
190 }
191 $f($aToHdl,$aFromHdl,$aToX,$aToY,$aFromX,$aFromY, $aWidth,$aHeight,$aw,$ah);
192 }
193
194 function Copy($fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth=-1,$fromHeight=-1) {
195 $this->CopyCanvasH($this->img,$fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth,$fromHeight);
196 }
197
198 function CopyMerge($fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth=-1,$fromHeight=-1,$aMix=100) {
199 if( $aMix == 100 ) {
200 $this->CopyCanvasH($this->img,$fromImg,
201 $toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth,$fromHeight);
202 }
203 else {
204 if( ($fromWidth != -1 && ($fromWidth != $toWidth)) || ($fromHeight != -1 && ($fromHeight != $fromHeight)) ) {
205 // Create a new canvas that will hold the re-scaled original from image
206 if( $toWidth <= 1 || $toHeight <= 1 ) {
207 JpGraphError::RaiseL(25083);//('Illegal image size when copying image. Size for copied to image is 1 pixel or less.');
208 }
209
210 $tmpimg = @imagecreatetruecolor($toWidth, $toHeight);
211
212 if( $tmpimg < 1 ) {
213 JpGraphError::RaiseL(25084);//('Failed to create temporary GD canvas. Out of memory ?');
214 }
215 $this->CopyCanvasH($tmpimg,$fromImg,0,0,0,0,
216 $toWidth,$toHeight,$fromWidth,$fromHeight);
217 $fromImg = $tmpimg;
218 }
219 imagecopymerge($this->img,$fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$aMix);
220 }
221 }
222
223 static function GetWidth($aImg) {
224 return imagesx($aImg);
225 }
226
227 static function GetHeight($aImg) {
228 return imagesy($aImg);
229 }
230
231 static function CreateFromString($aStr) {
232 $img = imagecreatefromstring($aStr);
233 if( $img === false ) {
234 JpGraphError::RaiseL(25085);
235 //('An image can not be created from the supplied string. It is either in a format not supported or the string is representing an corrupt image.');
236 }
237 return $img;
238 }
239
240 function SetCanvasH($aHdl) {
241 $this->img = $aHdl;
242 $this->rgb->img = $aHdl;
243 }
244
245 function SetCanvasColor($aColor) {
246 $this->canvascolor = $aColor ;
247 }
248
249 function SetAlphaBlending($aFlg=true) {
250 ImageAlphaBlending($this->img,$aFlg);
251 }
252
253 function SetAutoMargin() {
254 $min_bm=5;
255 $lm = min(40,$this->width/7);
256 $rm = min(20,$this->width/10);
257 $tm = max(5,$this->height/7);
258 $bm = max($min_bm,$this->height/6);
259 $this->SetMargin($lm,$rm,$tm,$bm);
260 }
261
262 //---------------
263 // PUBLIC METHODS
264
265 function SetFont($family,$style=FS_NORMAL,$size=10) {
266 $this->font_family=$family;
267 $this->font_style=$style;
268 $this->font_size=$size*SUPERSAMPLING_SCALE;
269 $this->font_file='';
270 if( ($this->font_family==FF_FONT1 || $this->font_family==FF_FONT2) && $this->font_style==FS_BOLD ){
271 ++$this->font_family;
272 }
273 if( $this->font_family > FF_FONT2+1 ) { // A TTF font so get the font file
274
275 // Check that this PHP has support for TTF fonts
276 if( !function_exists('imagettfbbox') ) {
277 // use internal font when php is configured without '--with-ttf'
278 $this->font_family = FF_FONT1;
279// JpGraphError::RaiseL(25087);//('This PHP build has not been configured with TTF support. You need to recompile your PHP installation with FreeType support.');
280 } else {
281 $this->font_file = $this->ttf->File($this->font_family,$this->font_style);
282 }
283 }
284 }
285
286 // Get the specific height for a text string
287 function GetTextHeight($txt="",$angle=0) {
288 $tmp = preg_split('/\n/',$txt);
289 $n = count($tmp);
290 $m=0;
291 for($i=0; $i< $n; ++$i) {
292 $m = max($m,strlen($tmp[$i]));
293 }
294
295 if( $this->font_family <= FF_FONT2+1 ) {
296 if( $angle==0 ) {
297 $h = imagefontheight($this->font_family);
298 if( $h === false ) {
299 JpGraphError::RaiseL(25088);//('You have a misconfigured GD font support. The call to imagefontwidth() fails.');
300 }
301
302 return $n*$h;
303 }
304 else {
305 $w = @imagefontwidth($this->font_family);
306 if( $w === false ) {
307 JpGraphError::RaiseL(25088);//('You have a misconfigured GD font support. The call to imagefontwidth() fails.');
308 }
309
310 return $m*$w;
311 }
312 }
313 else {
314 $bbox = $this->GetTTFBBox($txt,$angle);
315 return $bbox[1]-$bbox[5]+1;
316 }
317 }
318
319 // Estimate font height
320 function GetFontHeight($angle=0) {
321 $txt = "XOMg";
322 return $this->GetTextHeight($txt,$angle);
323 }
324
325 // Approximate font width with width of letter "O"
326 function GetFontWidth($angle=0) {
327 $txt = 'O';
328 return $this->GetTextWidth($txt,$angle);
329 }
330
331 // Get actual width of text in absolute pixels. Note that the width is the
332 // texts projected with onto the x-axis. Call with angle=0 to get the true
333 // etxt width.
334 function GetTextWidth($txt,$angle=0) {
335
336 $tmp = preg_split('/\n/',$txt);
337 $n = count($tmp);
338 if( $this->font_family <= FF_FONT2+1 ) {
339
340 $m=0;
341 for($i=0; $i < $n; ++$i) {
342 $l=strlen($tmp[$i]);
343 if( $l > $m ) {
344 $m = $l;
345 }
346 }
347
348 if( $angle==0 ) {
349 $w = @imagefontwidth($this->font_family);
350 if( $w === false ) {
351 JpGraphError::RaiseL(25088);//('You have a misconfigured GD font support. The call to imagefontwidth() fails.');
352 }
353 return $m*$w;
354 }
355 else {
356 // 90 degrees internal so height becomes width
357 $h = @imagefontheight($this->font_family);
358 if( $h === false ) {
359 JpGraphError::RaiseL(25089);//('You have a misconfigured GD font support. The call to imagefontheight() fails.');
360 }
361 return $n*$h;
362 }
363 }
364 else {
365 // For TTF fonts we must walk through a lines and find the
366 // widest one which we use as the width of the multi-line
367 // paragraph
368 $m=0;
369 for( $i=0; $i < $n; ++$i ) {
370 $bbox = $this->GetTTFBBox($tmp[$i],$angle);
371 $mm = $bbox[2] - $bbox[0];
372 if( $mm > $m )
373 $m = $mm;
374 }
375 return $m;
376 }
377 }
378
379
380 // Draw text with a box around it
381 function StrokeBoxedText($x,$y,$txt,$dir=0,$fcolor="white",$bcolor="black",
382 $shadowcolor=false,$paragraph_align="left",
383 $xmarg=6,$ymarg=4,$cornerradius=0,$dropwidth=3) {
384
385 $oldx = $this->lastx;
386 $oldy = $this->lasty;
387
388 if( !is_numeric($dir) ) {
389 if( $dir=="h" ) $dir=0;
390 elseif( $dir=="v" ) $dir=90;
391 else JpGraphError::RaiseL(25090,$dir);//(" Unknown direction specified in call to StrokeBoxedText() [$dir]");
392 }
393
394 if( $this->font_family >= FF_FONT0 && $this->font_family <= FF_FONT2+1) {
395 $width=$this->GetTextWidth($txt,$dir) ;
396 $height=$this->GetTextHeight($txt,$dir) ;
397 }
398 else {
399 $width=$this->GetBBoxWidth($txt,$dir) ;
400 $height=$this->GetBBoxHeight($txt,$dir) ;
401 }
402
403 $height += 2*$ymarg;
404 $width += 2*$xmarg;
405
406 if( $this->text_halign=="right" ) $x -= $width;
407 elseif( $this->text_halign=="center" ) $x -= $width/2;
408
409 if( $this->text_valign=="bottom" ) $y -= $height;
410 elseif( $this->text_valign=="center" ) $y -= $height/2;
411
412 $olda = $this->SetAngle(0);
413
414 if( $shadowcolor ) {
415 $this->PushColor($shadowcolor);
416 $this->FilledRoundedRectangle($x-$xmarg+$dropwidth,$y-$ymarg+$dropwidth,
417 $x+$width+$dropwidth,$y+$height-$ymarg+$dropwidth,
418 $cornerradius);
419 $this->PopColor();
420 $this->PushColor($fcolor);
421 $this->FilledRoundedRectangle($x-$xmarg,$y-$ymarg,
422 $x+$width,$y+$height-$ymarg,
423 $cornerradius);
424 $this->PopColor();
425 $this->PushColor($bcolor);
426 $this->RoundedRectangle($x-$xmarg,$y-$ymarg,
427 $x+$width,$y+$height-$ymarg,$cornerradius);
428 $this->PopColor();
429 }
430 else {
431 if( $fcolor ) {
432 $oc=$this->current_color;
433 $this->SetColor($fcolor);
434 $this->FilledRoundedRectangle($x-$xmarg,$y-$ymarg,$x+$width,$y+$height-$ymarg,$cornerradius);
435 $this->current_color=$oc;
436 }
437 if( $bcolor ) {
438 $oc=$this->current_color;
439 $this->SetColor($bcolor);
440 $this->RoundedRectangle($x-$xmarg,$y-$ymarg,$x+$width,$y+$height-$ymarg,$cornerradius);
441 $this->current_color=$oc;
442 }
443 }
444
445 $h=$this->text_halign;
446 $v=$this->text_valign;
447 $this->SetTextAlign("left","top");
448
449 $debug=false;
450 $this->StrokeText($x, $y, $txt, $dir, $paragraph_align,$debug);
451
452 $bb = array($x-$xmarg,$y+$height-$ymarg,$x+$width,$y+$height-$ymarg,
453 $x+$width,$y-$ymarg,$x-$xmarg,$y-$ymarg);
454 $this->SetTextAlign($h,$v);
455
456 $this->SetAngle($olda);
457 $this->lastx = $oldx;
458 $this->lasty = $oldy;
459
460 return $bb;
461 }
462
463 // Draw text with a box around it. This time the box will be rotated
464 // with the text. The previous method will just make a larger enough non-rotated
465 // box to hold the text inside.
466 function StrokeBoxedText2($x,$y,$txt,$dir=0,$fcolor="white",$bcolor="black",
467 $shadowcolor=false,$paragraph_align="left",
468 $xmarg=6,$ymarg=4,$cornerradius=0,$dropwidth=3) {
469
470 // This version of boxed text will stroke a rotated box round the text
471 // thta will follow the angle of the text.
472 // This has two implications:
473 // 1) This methos will only support TTF fonts
474 // 2) The only two alignment that makes sense are centered or baselined
475
476 if( $this->font_family <= FF_FONT2+1 ) {
477 JpGraphError::RaiseL(25131);//StrokeBoxedText2() Only support TTF fonts and not built in bitmap fonts
478 }
479
480 $oldx = $this->lastx;
481 $oldy = $this->lasty;
482 $dir = $this->NormAngle($dir);
483
484 if( !is_numeric($dir) ) {
485 if( $dir=="h" ) $dir=0;
486 elseif( $dir=="v" ) $dir=90;
487 else JpGraphError::RaiseL(25090,$dir);//(" Unknown direction specified in call to StrokeBoxedText() [$dir]");
488 }
489
490 $width=$this->GetTextWidth($txt,0) + 2*$xmarg;
491 $height=$this->GetTextHeight($txt,0) + 2*$ymarg ;
492 $rect_width=$this->GetBBoxWidth($txt,$dir) ;
493 $rect_height=$this->GetBBoxHeight($txt,$dir) ;
494
495 $baseline_offset = $this->bbox_cache[1]-1;
496
497 if( $this->text_halign=="center" ) {
498 if( $dir >= 0 && $dir <= 90 ) {
499
500 $x -= $rect_width/2;
501 $x += sin($dir*M_PI/180)*$height;
502 $y += $rect_height/2;
503
504 } elseif( $dir >= 270 && $dir <= 360 ) {
505
506 $x -= $rect_width/2;
507 $y -= $rect_height/2;
508 $y += cos($dir*M_PI/180)*$height;
509
510 } elseif( $dir >= 90 && $dir <= 180 ) {
511
512 $x += $rect_width/2;
513 $y += $rect_height/2;
514 $y += cos($dir*M_PI/180)*$height;
515
516 }
517 else {
518 // $dir > 180 && $dir < 270
519 $x += $rect_width/2;
520 $x += sin($dir*M_PI/180)*$height;
521 $y -= $rect_height/2;
522 }
523 }
524
525 // Rotate the box around this point
526 $this->SetCenter($x,$y);
527 $olda = $this->SetAngle(-$dir);
528
529 // We need to use adjusted coordinats for the box to be able
530 // to draw the box below the baseline. This cannot be done before since
531 // the rotating point must be the original x,y since that is arounbf the
532 // point where the text will rotate and we cannot change this since
533 // that is where the GD/GreeType will rotate the text
534
535
536 // For smaller <14pt font we need to do some additional
537 // adjustments to make it look good
538 if( $this->font_size < 14 ) {
539 $x -= 2;
540 $y += 2;
541 }
542 else {
543 // $y += $baseline_offset;
544 }
545
546 if( $shadowcolor ) {
547 $this->PushColor($shadowcolor);
548 $this->FilledRectangle($x-$xmarg+$dropwidth,$y+$ymarg+$dropwidth-$height,
549 $x+$width+$dropwidth,$y+$ymarg+$dropwidth);
550 //$cornerradius);
551 $this->PopColor();
552 $this->PushColor($fcolor);
553 $this->FilledRectangle($x-$xmarg, $y+$ymarg-$height,
554 $x+$width, $y+$ymarg);
555 //$cornerradius);
556 $this->PopColor();
557 $this->PushColor($bcolor);
558 $this->Rectangle($x-$xmarg,$y+$ymarg-$height,
559 $x+$width,$y+$ymarg);
560 //$cornerradius);
561 $this->PopColor();
562 }
563 else {
564 if( $fcolor ) {
565 $oc=$this->current_color;
566 $this->SetColor($fcolor);
567 $this->FilledRectangle($x-$xmarg,$y+$ymarg-$height,$x+$width,$y+$ymarg);//,$cornerradius);
568 $this->current_color=$oc;
569 }
570 if( $bcolor ) {
571 $oc=$this->current_color;
572 $this->SetColor($bcolor);
573 $this->Rectangle($x-$xmarg,$y+$ymarg-$height,$x+$width,$y+$ymarg);//,$cornerradius);
574 $this->current_color=$oc;
575 }
576 }
577
578 if( $this->font_size < 14 ) {
579 $x += 2;
580 $y -= 2;
581 }
582 else {
583
584 // Restore the original y before we stroke the text
585 // $y -= $baseline_offset;
586
587 }
588
589 $this->SetCenter(0,0);
590 $this->SetAngle($olda);
591
592 $h=$this->text_halign;
593 $v=$this->text_valign;
594 if( $this->text_halign == 'center') {
595 $this->SetTextAlign('center','basepoint');
596 }
597 else {
598 $this->SetTextAlign('basepoint','basepoint');
599 }
600
601 $debug=false;
602 $this->StrokeText($x, $y, $txt, $dir, $paragraph_align,$debug);
603
604 $bb = array($x-$xmarg, $y+$height-$ymarg,
605 $x+$width, $y+$height-$ymarg,
606 $x+$width, $y-$ymarg,
607 $x-$xmarg, $y-$ymarg);
608
609 $this->SetTextAlign($h,$v);
610 $this->SetAngle($olda);
611
612 $this->lastx = $oldx;
613 $this->lasty = $oldy;
614
615 return $bb;
616 }
617
618 // Set text alignment
619 function SetTextAlign($halign,$valign="bottom") {
620 $this->text_halign=$halign;
621 $this->text_valign=$valign;
622 }
623
624 function _StrokeBuiltinFont($x,$y,$txt,$dir,$paragraph_align,&$aBoundingBox,$aDebug=false) {
625
626 if( is_numeric($dir) && $dir!=90 && $dir!=0)
627 JpGraphError::RaiseL(25091);//(" Internal font does not support drawing text at arbitrary angle. Use TTF fonts instead.");
628
629 $h=$this->GetTextHeight($txt);
630 $fh=$this->GetFontHeight();
631 $w=$this->GetTextWidth($txt);
632
633 if( $this->text_halign=="right") {
634 $x -= $dir==0 ? $w : $h;
635 }
636 elseif( $this->text_halign=="center" ) {
637 // For center we subtract 1 pixel since this makes the middle
638 // be prefectly in the middle
639 $x -= $dir==0 ? $w/2-1 : $h/2;
640 }
641 if( $this->text_valign=="top" ) {
642 $y += $dir==0 ? $h : $w;
643 }
644 elseif( $this->text_valign=="center" ) {
645 $y += $dir==0 ? $h/2 : $w/2;
646 }
647
648 $use_font = $this->font_family;
649
650 if( $dir==90 ) {
651 imagestringup($this->img,$use_font,$x,$y,$txt,$this->current_color);
652 $aBoundingBox = array(round($x),round($y),round($x),round($y-$w),round($x+$h),round($y-$w),round($x+$h),round($y));
653 if( $aDebug ) {
654 // Draw bounding box
655 $this->PushColor('green');
656 $this->Polygon($aBoundingBox,true);
657 $this->PopColor();
658 }
659 }
660 else {
661 if( preg_match('/\n/',$txt) ) {
662 $tmp = preg_split('/\n/',$txt);
663 for($i=0; $i < count($tmp); ++$i) {
664 $w1 = $this->GetTextWidth($tmp[$i]);
665 if( $paragraph_align=="left" ) {
666 imagestring($this->img,$use_font,$x,$y-$h+1+$i*$fh,$tmp[$i],$this->current_color);
667 }
668 elseif( $paragraph_align=="right" ) {
669 imagestring($this->img,$use_font,$x+($w-$w1),$y-$h+1+$i*$fh,$tmp[$i],$this->current_color);
670 }
671 else {
672 imagestring($this->img,$use_font,$x+$w/2-$w1/2,$y-$h+1+$i*$fh,$tmp[$i],$this->current_color);
673 }
674 }
675 }
676 else {
677 //Put the text
678 imagestring($this->img,$use_font,$x,$y-$h+1,$txt,$this->current_color);
679 }
680 if( $aDebug ) {
681 // Draw the bounding rectangle and the bounding box
682 $p1 = array(round($x),round($y),round($x),round($y-$h),round($x+$w),round($y-$h),round($x+$w),round($y));
683
684 // Draw bounding box
685 $this->PushColor('green');
686 $this->Polygon($p1,true);
687 $this->PopColor();
688
689 }
690 $aBoundingBox=array(round($x),round($y),round($x),round($y-$h),round($x+$w),round($y-$h),round($x+$w),round($y));
691 }
692 }
693
694 function AddTxtCR($aTxt) {
695 // If the user has just specified a '\n'
696 // instead of '\n\t' we have to add '\r' since
697 // the width will be too muchy otherwise since when
698 // we print we stroke the individually lines by hand.
699 $e = explode("\n",$aTxt);
700 $n = count($e);
701 for($i=0; $i<$n; ++$i) {
702 $e[$i]=str_replace("\r","",$e[$i]);
703 }
704 return implode("\n\r",$e);
705 }
706
707 function NormAngle($a) {
708 // Normalize angle in degrees
709 // Normalize angle to be between 0-360
710 while( $a > 360 )
711 $a -= 360;
712 while( $a < -360 )
713 $a += 360;
714 if( $a < 0 )
715 $a = 360 + $a;
716 return $a;
717 }
718
719 function imagettfbbox_fixed($size, $angle, $fontfile, $text) {
720
721
722 if( ! USE_LIBRARY_IMAGETTFBBOX ) {
723
724 $bbox = @imagettfbbox($size, $angle, $fontfile, $text);
725 if( $bbox === false ) {
726 JpGraphError::RaiseL(25092,$this->font_file);
727 //("There is either a configuration problem with TrueType or a problem reading font file (".$this->font_file."). Make sure file exists and is in a readable place for the HTTP process. (If 'basedir' restriction is enabled in PHP then the font file must be located in the document root.). It might also be a wrongly installed FreeType library. Try uppgrading to at least FreeType 2.1.13 and recompile GD with the correct setup so it can find the new FT library.");
728 }
729 $this->bbox_cache = $bbox;
730 return $bbox;
731 }
732
733 // The built in imagettfbbox is buggy for angles != 0 so
734 // we calculate this manually by getting the bounding box at
735 // angle = 0 and then rotate the bounding box manually
736 $bbox = @imagettfbbox($size, 0, $fontfile, $text);
737 if( $bbox === false ) {
738 JpGraphError::RaiseL(25092,$this->font_file);
739 //("There is either a configuration problem with TrueType or a problem reading font file (".$this->font_file."). Make sure file exists and is in a readable place for the HTTP process. (If 'basedir' restriction is enabled in PHP then the font file must be located in the document root.). It might also be a wrongly installed FreeType library. Try uppgrading to at least FreeType 2.1.13 and recompile GD with the correct setup so it can find the new FT library.");
740 }
741
742 $angle = $this->NormAngle($angle);
743
744 $a = $angle*M_PI/180;
745 $ca = cos($a);
746 $sa = sin($a);
747 $ret = array();
748
749 // We always add 1 pixel to the left since the left edge of the bounding
750 // box is sometimes coinciding with the first pixel of the text
751 //$bbox[0] -= 1;
752 //$bbox[6] -= 1;
753
754 // For roatated text we need to add extra width for rotated
755 // text since the kerning and stroking of the TTF is not the same as for
756 // text at a 0 degree angle
757
758 if( $angle > 0.001 && abs($angle-360) > 0.001 ) {
759 $h = abs($bbox[7]-$bbox[1]);
760 $w = abs($bbox[2]-$bbox[0]);
761
762 $bbox[0] -= 2;
763 $bbox[6] -= 2;
764 // The width is underestimated so compensate for that
765 $bbox[2] += round($w*0.06);
766 $bbox[4] += round($w*0.06);
767
768 // and we also need to compensate with increased height
769 $bbox[5] -= round($h*0.1);
770 $bbox[7] -= round($h*0.1);
771
772 if( $angle > 90 ) {
773 // For angles > 90 we also need to extend the height further down
774 // by the baseline since that is also one more problem
775 $bbox[1] += round($h*0.15);
776 $bbox[3] += round($h*0.15);
777
778 // and also make it slighty less height
779 $bbox[7] += round($h*0.05);
780 $bbox[5] += round($h*0.05);
781
782 // And we need to move the box slightly top the rright (from a tetx perspective)
783 $bbox[0] += round($w*0.02);
784 $bbox[6] += round($w*0.02);
785
786 if( $angle > 180 ) {
787 // And we need to move the box slightly to the left (from a text perspective)
788 $bbox[0] -= round($w*0.02);
789 $bbox[6] -= round($w*0.02);
790 $bbox[2] -= round($w*0.02);
791 $bbox[4] -= round($w*0.02);
792
793 }
794
795 }
796 for($i = 0; $i < 7; $i += 2) {
797 $ret[$i] = round($bbox[$i] * $ca + $bbox[$i+1] * $sa);
798 $ret[$i+1] = round($bbox[$i+1] * $ca - $bbox[$i] * $sa);
799 }
800 $this->bbox_cache = $ret;
801 return $ret;
802 }
803 else {
804 $this->bbox_cache = $bbox;
805 return $bbox;
806 }
807 }
808
809 // Deprecated
810 function GetTTFBBox($aTxt,$aAngle=0) {
811 $bbox = $this->imagettfbbox_fixed($this->font_size,$aAngle,$this->font_file,$aTxt);
812 return $bbox;
813 }
814
815 function GetBBoxTTF($aTxt,$aAngle=0) {
816 // Normalize the bounding box to become a minimum
817 // enscribing rectangle
818
819 $aTxt = $this->AddTxtCR($aTxt);
820
821 if( !is_readable($this->font_file) ) {
822 JpGraphError::RaiseL(25093,$this->font_file);
823 //('Can not read font file ('.$this->font_file.') in call to Image::GetBBoxTTF. Please make sure that you have set a font before calling this method and that the font is installed in the TTF directory.');
824 }
825 $bbox = $this->imagettfbbox_fixed($this->font_size,$aAngle,$this->font_file,$aTxt);
826
827 if( $aAngle==0 ) return $bbox;
828
829 if( $aAngle >= 0 ) {
830 if( $aAngle <= 90 ) { //<=0
831 $bbox = array($bbox[6],$bbox[1],$bbox[2],$bbox[1],
832 $bbox[2],$bbox[5],$bbox[6],$bbox[5]);
833 }
834 elseif( $aAngle <= 180 ) { //<= 2
835 $bbox = array($bbox[4],$bbox[7],$bbox[0],$bbox[7],
836 $bbox[0],$bbox[3],$bbox[4],$bbox[3]);
837 }
838 elseif( $aAngle <= 270 ) { //<= 3
839 $bbox = array($bbox[2],$bbox[5],$bbox[6],$bbox[5],
840 $bbox[6],$bbox[1],$bbox[2],$bbox[1]);
841 }
842 else {
843 $bbox = array($bbox[0],$bbox[3],$bbox[4],$bbox[3],
844 $bbox[4],$bbox[7],$bbox[0],$bbox[7]);
845 }
846 }
847 elseif( $aAngle < 0 ) {
848 if( $aAngle <= -270 ) { // <= -3
849 $bbox = array($bbox[6],$bbox[1],$bbox[2],$bbox[1],
850 $bbox[2],$bbox[5],$bbox[6],$bbox[5]);
851 }
852 elseif( $aAngle <= -180 ) { // <= -2
853 $bbox = array($bbox[0],$bbox[3],$bbox[4],$bbox[3],
854 $bbox[4],$bbox[7],$bbox[0],$bbox[7]);
855 }
856 elseif( $aAngle <= -90 ) { // <= -1
857 $bbox = array($bbox[2],$bbox[5],$bbox[6],$bbox[5],
858 $bbox[6],$bbox[1],$bbox[2],$bbox[1]);
859 }
860 else {
861 $bbox = array($bbox[0],$bbox[3],$bbox[4],$bbox[3],
862 $bbox[4],$bbox[7],$bbox[0],$bbox[7]);
863 }
864 }
865 return $bbox;
866 }
867
868 function GetBBoxHeight($aTxt,$aAngle=0) {
869 $box = $this->GetBBoxTTF($aTxt,$aAngle);
870 return abs($box[7]-$box[1]);
871 }
872
873 function GetBBoxWidth($aTxt,$aAngle=0) {
874 $box = $this->GetBBoxTTF($aTxt,$aAngle);
875 return $box[2]-$box[0]+1;
876 }
877
878
879 function _StrokeTTF($x,$y,$txt,$dir,$paragraph_align,&$aBoundingBox,$debug=false) {
880
881 // Setup default inter line margin for paragraphs to be
882 // 3% of the font height.
883 $ConstLineSpacing = 0.03 ;
884
885 // Remember the anchor point before adjustment
886 if( $debug ) {
887 $ox=$x;
888 $oy=$y;
889 }
890
891 if( !preg_match('/\n/',$txt) || ($dir>0 && preg_match('/\n/',$txt)) ) {
892 // Format a single line
893
894 $txt = $this->AddTxtCR($txt);
895 $bbox=$this->GetBBoxTTF($txt,$dir);
896 $width = $this->GetBBoxWidth($txt,$dir);
897 $height = $this->GetBBoxHeight($txt,$dir);
898
899 // The special alignment "basepoint" is mostly used internally
900 // in the library. This will put the anchor position at the left
901 // basepoint of the tetx. This is the default anchor point for
902 // TTF text.
903
904 if( $this->text_valign != 'basepoint' ) {
905 // Align x,y ot lower left corner of bbox
906
907
908 if( $this->text_halign=='right' ) {
909 $x -= $width;
910 $x -= $bbox[0];
911 }
912 elseif( $this->text_halign=='center' ) {
913 $x -= $width/2;
914 $x -= $bbox[0];
915 }
916 elseif( $this->text_halign=='baseline' ) {
917 // This is only support for text at 90 degree !!
918 // Do nothing the text is drawn at baseline by default
919 }
920
921 if( $this->text_valign=='top' ) {
922 $y -= $bbox[1]; // Adjust to bottom of text
923 $y += $height;
924 }
925 elseif( $this->text_valign=='center' ) {
926 $y -= $bbox[1]; // Adjust to bottom of text
927 $y += $height/2;
928 }
929 elseif( $this->text_valign=='baseline' ) {
930 // This is only support for text at 0 degree !!
931 // Do nothing the text is drawn at baseline by default
932 }
933 }
934 ImageTTFText ($this->img, $this->font_size, $dir, $x, $y,
935 $this->current_color,$this->font_file,$txt);
936
937 // Calculate and return the co-ordinates for the bounding box
938 $box = $this->imagettfbbox_fixed($this->font_size,$dir,$this->font_file,$txt);
939 $p1 = array();
940
941 for($i=0; $i < 4; ++$i) {
942 $p1[] = round($box[$i*2]+$x);
943 $p1[] = round($box[$i*2+1]+$y);
944 }
945 $aBoundingBox = $p1;
946
947 // Debugging code to highlight the bonding box and bounding rectangle
948 // For text at 0 degrees the bounding box and bounding rectangle are the
949 // same
950 if( $debug ) {
951 // Draw the bounding rectangle and the bounding box
952
953 $p = array();
954 $p1 = array();
955
956 for($i=0; $i < 4; ++$i) {
957 $p[] = $bbox[$i*2]+$x ;
958 $p[] = $bbox[$i*2+1]+$y;
959 $p1[] = $box[$i*2]+$x ;
960 $p1[] = $box[$i*2+1]+$y ;
961 }
962
963 // Draw bounding box
964 $this->PushColor('green');
965 $this->Polygon($p1,true);
966 $this->PopColor();
967
968 // Draw bounding rectangle
969 $this->PushColor('darkgreen');
970 $this->Polygon($p,true);
971 $this->PopColor();
972
973 // Draw a cross at the anchor point
974 $this->PushColor('red');
975 $this->Line($ox-15,$oy,$ox+15,$oy);
976 $this->Line($ox,$oy-15,$ox,$oy+15);
977 $this->PopColor();
978 }
979 }
980 else {
981 // Format a text paragraph
982 $fh=$this->GetFontHeight();
983
984 // Line margin is 25% of font height
985 $linemargin=round($fh*$ConstLineSpacing);
986 $fh += $linemargin;
987 $w=$this->GetTextWidth($txt);
988
989 $y -= $linemargin/2;
990 $tmp = preg_split('/\n/',$txt);
991 $nl = count($tmp);
992 $h = $nl * $fh;
993
994 if( $this->text_halign=='right') {
995 $x -= $dir==0 ? $w : $h;
996 }
997 elseif( $this->text_halign=='center' ) {
998 $x -= $dir==0 ? $w/2 : $h/2;
999 }
1000
1001 if( $this->text_valign=='top' ) {
1002 $y += $dir==0 ? $h : $w;
1003 }
1004 elseif( $this->text_valign=='center' ) {
1005 $y += $dir==0 ? $h/2 : $w/2;
1006 }
1007
1008 // Here comes a tricky bit.
1009 // Since we have to give the position for the string at the
1010 // baseline this means thaht text will move slightly up
1011 // and down depending on any of it's character descend below
1012 // the baseline, for example a 'g'. To adjust the Y-position
1013 // we therefore adjust the text with the baseline Y-offset
1014 // as used for the current font and size. This will keep the
1015 // baseline at a fixed positoned disregarding the actual
1016 // characters in the string.
1017 $standardbox = $this->GetTTFBBox('Gg',$dir);
1018 $yadj = $standardbox[1];
1019 $xadj = $standardbox[0];
1020 $aBoundingBox = array();
1021 for($i=0; $i < $nl; ++$i) {
1022 $wl = $this->GetTextWidth($tmp[$i]);
1023 $bbox = $this->GetTTFBBox($tmp[$i],$dir);
1024 if( $paragraph_align=='left' ) {
1025 $xl = $x;
1026 }
1027 elseif( $paragraph_align=='right' ) {
1028 $xl = $x + ($w-$wl);
1029 }
1030 else {
1031 // Center
1032 $xl = $x + $w/2 - $wl/2 ;
1033 }
1034
1035 // In theory we should adjust with full pre-lead to get the lines
1036 // lined up but this doesn't look good so therfore we only adjust with
1037 // half th pre-lead
1038 $xl -= $bbox[0]/2;
1039 $yl = $y - $yadj;
1040 //$xl = $xl- $xadj;
1041 ImageTTFText($this->img, $this->font_size, $dir, $xl, $yl-($h-$fh)+$fh*$i,
1042 $this->current_color,$this->font_file,$tmp[$i]);
1043
1044 // echo "xl=$xl,".$tmp[$i]." <br>";
1045 if( $debug ) {
1046 // Draw the bounding rectangle around each line
1047 $box=@ImageTTFBBox($this->font_size,$dir,$this->font_file,$tmp[$i]);
1048 $p = array();
1049 for($j=0; $j < 4; ++$j) {
1050 $p[] = $bbox[$j*2]+$xl;
1051 $p[] = $bbox[$j*2+1]+$yl-($h-$fh)+$fh*$i;
1052 }
1053
1054 // Draw bounding rectangle
1055 $this->PushColor('darkgreen');
1056 $this->Polygon($p,true);
1057 $this->PopColor();
1058 }
1059 }
1060
1061 // Get the bounding box
1062 $bbox = $this->GetBBoxTTF($txt,$dir);
1063 for($j=0; $j < 4; ++$j) {
1064 $bbox[$j*2]+= round($x);
1065 $bbox[$j*2+1]+= round($y - ($h-$fh) - $yadj);
1066 }
1067 $aBoundingBox = $bbox;
1068
1069 if( $debug ) {
1070 // Draw a cross at the anchor point
1071 $this->PushColor('red');
1072 $this->Line($ox-25,$oy,$ox+25,$oy);
1073 $this->Line($ox,$oy-25,$ox,$oy+25);
1074 $this->PopColor();
1075 }
1076
1077 }
1078 }
1079
1080 function StrokeText($x,$y,$txt,$dir=0,$paragraph_align="left",$debug=false) {
1081
1082 $x = round($x);
1083 $y = round($y);
1084
1085 // Do special language encoding
1086 $txt = $this->langconv->Convert($txt,$this->font_family);
1087
1088 if( !is_numeric($dir) ) {
1089 JpGraphError::RaiseL(25094);//(" Direction for text most be given as an angle between 0 and 90.");
1090 }
1091
1092 if( $this->font_family >= FF_FONT0 && $this->font_family <= FF_FONT2+1) {
1093 $this->_StrokeBuiltinFont($x,$y,$txt,$dir,$paragraph_align,$boundingbox,$debug);
1094 }
1095 elseif( $this->font_family >= _FIRST_FONT && $this->font_family <= _LAST_FONT) {
1096 $this->_StrokeTTF($x,$y,$txt,$dir,$paragraph_align,$boundingbox,$debug);
1097 }
1098 else {
1099 JpGraphError::RaiseL(25095);//(" Unknown font font family specification. ");
1100 }
1101 return $boundingbox;
1102 }
1103
1104 function SetMargin($lm,$rm,$tm,$bm) {
1105
1106 $this->left_margin=$lm;
1107 $this->right_margin=$rm;
1108 $this->top_margin=$tm;
1109 $this->bottom_margin=$bm;
1110
1111 $this->plotwidth = $this->width - $this->left_margin - $this->right_margin;
1112 $this->plotheight = $this->height - $this->top_margin - $this->bottom_margin;
1113
1114 if( $this->width > 0 && $this->height > 0 ) {
1115 if( $this->plotwidth < 0 || $this->plotheight < 0 ) {
1116 JpGraphError::RaiseL(25130, $this->plotwidth, $this->plotheight);
1117 //JpGraphError::raise("To small plot area. ($lm,$rm,$tm,$bm : $this->plotwidth x $this->plotheight). With the given image size and margins there is to little space left for the plot. Increase the plot size or reduce the margins.");
1118 }
1119 }
1120 }
1121
1122 function SetTransparent($color) {
1123 imagecolortransparent ($this->img,$this->rgb->allocate($color));
1124 }
1125
1126 function SetColor($color,$aAlpha=0) {
1127 $this->current_color_name = $color;
1128 $this->current_color=$this->rgb->allocate($color,$aAlpha);
1129 if( $this->current_color == -1 ) {
1130 $tc=imagecolorstotal($this->img);
1131 JpGraphError::RaiseL(25096);
1132 //("Can't allocate any more colors. Image has already allocated maximum of <b>$tc colors</b>. This might happen if you have anti-aliasing turned on together with a background image or perhaps gradient fill since this requires many, many colors. Try to turn off anti-aliasing. If there is still a problem try downgrading the quality of the background image to use a smaller pallete to leave some entries for your graphs. You should try to limit the number of colors in your background image to 64. If there is still problem set the constant DEFINE(\"USE_APPROX_COLORS\",true); in jpgraph.php This will use approximative colors when the palette is full. Unfortunately there is not much JpGraph can do about this since the palette size is a limitation of current graphic format and what the underlying GD library suppports.");
1133 }
1134 return $this->current_color;
1135 }
1136
1137 function PushColor($color) {
1138 if( $color != "" ) {
1139 $this->colorstack[$this->colorstackidx]=$this->current_color_name;
1140 $this->colorstack[$this->colorstackidx+1]=$this->current_color;
1141 $this->colorstackidx+=2;
1142 $this->SetColor($color);
1143 }
1144 else {
1145 JpGraphError::RaiseL(25097);//("Color specified as empty string in PushColor().");
1146 }
1147 }
1148
1149 function PopColor() {
1150 if( $this->colorstackidx < 1 ) {
1151 JpGraphError::RaiseL(25098);//(" Negative Color stack index. Unmatched call to PopColor()");
1152 }
1153 $this->current_color=$this->colorstack[--$this->colorstackidx];
1154 $this->current_color_name=$this->colorstack[--$this->colorstackidx];
1155 }
1156
1157
1158 function SetLineWeight($weight) {
1159 $old = $this->line_weight;
1160 imagesetthickness($this->img,$weight);
1161 $this->line_weight = $weight;
1162 return $old;
1163 }
1164
1165 function SetStartPoint($x,$y) {
1166 $this->lastx=round($x);
1167 $this->lasty=round($y);
1168 }
1169
1170 function Arc($cx,$cy,$w,$h,$s,$e) {
1171 // GD Arc doesn't like negative angles
1172 while( $s < 0) $s += 360;
1173 while( $e < 0) $e += 360;
1174 imagearc($this->img,round($cx),round($cy),round($w),round($h),$s,$e,$this->current_color);
1175 }
1176
1177 function FilledArc($xc,$yc,$w,$h,$s,$e,$style='') {
1178 $s = round($s);
1179 $e = round($e);
1180 while( $s < 0 ) $s += 360;
1181 while( $e < 0 ) $e += 360;
1182 if( $style=='' )
1183 $style=IMG_ARC_PIE;
1184 if( abs($s-$e) > 0 ) {
1185 imagefilledarc($this->img,round($xc),round($yc),round($w),round($h),$s,$e,$this->current_color,$style);
1186// $this->DrawImageSmoothArc($this->img,round($xc),round($yc),round($w),round($h),$s,$e,$this->current_color,$style);
1187 }
1188 }
1189
1190 function FilledCakeSlice($cx,$cy,$w,$h,$s,$e) {
1191 $this->CakeSlice($cx,$cy,$w,$h,$s,$e,$this->current_color_name);
1192 }
1193
1194 function CakeSlice($xc,$yc,$w,$h,$s,$e,$fillcolor="",$arccolor="") {
1195 $s = round($s); $e = round($e);
1196 $w = round($w); $h = round($h);
1197 $xc = round($xc); $yc = round($yc);
1198 if( $s == $e ) {
1199 // A full circle. We draw this a plain circle
1200 $this->PushColor($fillcolor);
1201 imagefilledellipse($this->img,$xc,$yc,2*$w,2*$h,$this->current_color);
1202
1203 // If antialiasing is used then we often don't have any color no the surrounding
1204 // arc. So, we need to check for this special case so we don't send an empty
1205 // color to the push function. In this case we use the fill color for the arc as well
1206 if( $arccolor != '' ) {
1207 $this->PopColor();
1208 $this->PushColor($arccolor);
1209 }
1210 imageellipse($this->img,$xc,$yc,2*$w,2*$h,$this->current_color);
1211 $this->Line($xc,$yc,cos($s*M_PI/180)*$w+$xc,$yc+sin($s*M_PI/180)*$h);
1212 $this->PopColor();
1213 }
1214 else {
1215 $this->PushColor($fillcolor);
1216 $this->FilledArc($xc,$yc,2*$w,2*$h,$s,$e);
1217 $this->PopColor();
1218 if( $arccolor != "" ) {
1219 $this->PushColor($arccolor);
1220 // We add 2 pixels to make the Arc() better aligned with
1221 // the filled arc.
1222 imagefilledarc($this->img,$xc,$yc,2*$w,2*$h,$s,$e,$this->current_color,IMG_ARC_NOFILL | IMG_ARC_EDGED ) ;
1223 $this->PopColor();
1224 }
1225 }
1226 }
1227
1228 function Ellipse($xc,$yc,$w,$h) {
1229 $this->Arc($xc,$yc,$w,$h,0,360);
1230 }
1231
1232 function Circle($xc,$yc,$r) {
1233 imageellipse($this->img,round($xc),round($yc),$r*2,$r*2,$this->current_color);
1234// $this->DrawImageSmoothArc($this->img,round($xc),round($yc),$r*2+1,$r*2+1,0,360,$this->current_color);
1235// $this->imageSmoothCircle($this->img, round($xc),round($yc), $r*2+1, $this->current_color);
1236 }
1237
1238 function FilledCircle($xc,$yc,$r) {
1239 imagefilledellipse($this->img,round($xc),round($yc),2*$r,2*$r,$this->current_color);
1240// $this->DrawImageSmoothArc($this->img, round($xc), round($yc), 2*$r, 2*$r, 0, 360, $this->current_color);
1241 }
1242
1243 // Linear Color InterPolation
1244 function lip($f,$t,$p) {
1245 $p = round($p,1);
1246 $r = $f[0] + ($t[0]-$f[0])*$p;
1247 $g = $f[1] + ($t[1]-$f[1])*$p;
1248 $b = $f[2] + ($t[2]-$f[2])*$p;
1249 return array($r,$g,$b);
1250 }
1251
1252 // Set line style dashed, dotted etc
1253 function SetLineStyle($s) {
1254 if( is_numeric($s) ) {
1255 if( $s<1 || $s>4 ) {
1256 JpGraphError::RaiseL(25101,$s);//(" Illegal numeric argument to SetLineStyle(): ($s)");
1257 }
1258 }
1259 elseif( is_string($s) ) {
1260 if( $s == "solid" ) $s=1;
1261 elseif( $s == "dotted" ) $s=2;
1262 elseif( $s == "dashed" ) $s=3;
1263 elseif( $s == "longdashed" ) $s=4;
1264 else {
1265 JpGraphError::RaiseL(25102,$s);//(" Illegal string argument to SetLineStyle(): $s");
1266 }
1267 }
1268 else {
1269 JpGraphError::RaiseL(25103,$s);//(" Illegal argument to SetLineStyle $s");
1270 }
1271 $old = $this->line_style;
1272 $this->line_style=$s;
1273 return $old;
1274 }
1275
1276 // Same as Line but take the line_style into account
1277 function StyleLine($x1,$y1,$x2,$y2,$aStyle='', $from_grid_class = false) {
1278 if( $this->line_weight <= 0 ) return;
1279
1280 if( $aStyle === '' ) {
1281 $aStyle = $this->line_style;
1282 }
1283
1284 $dashed_line_method = 'DashedLine';
1285 if ($from_grid_class) {
1286 $dashed_line_method = 'DashedLineForGrid';
1287 }
1288
1289 // Add error check since dashed line will only work if anti-alias is disabled
1290 // this is a limitation in GD
1291
1292 if( $aStyle == 1 ) {
1293 // Solid style. We can handle anti-aliasing for this
1294 $this->Line($x1,$y1,$x2,$y2);
1295 }
1296 else {
1297 // Since the GD routines doesn't handle AA for styled line
1298 // we have no option than to turn it off to get any lines at
1299 // all if the weight > 1
1300 $oldaa = $this->GetAntiAliasing();
1301 if( $oldaa && $this->line_weight > 1 ) {
1302 $this->SetAntiAliasing(false);
1303 }
1304
1305 switch( $aStyle ) {
1306 case 2: // Dotted
1307 $this->$dashed_line_method($x1,$y1,$x2,$y2,2,6);
1308 break;
1309 case 3: // Dashed
1310 $this->$dashed_line_method($x1,$y1,$x2,$y2,5,9);
1311 break;
1312 case 4: // Longdashes
1313 $this->$dashed_line_method($x1,$y1,$x2,$y2,9,13);
1314 break;
1315 default:
1316 JpGraphError::RaiseL(25104,$this->line_style);//(" Unknown line style: $this->line_style ");
1317 break;
1318 }
1319 if( $oldaa ) {
1320 $this->SetAntiAliasing(true);
1321 }
1322 }
1323 }
1324
1325 function DashedLine($x1,$y1,$x2,$y2,$dash_length=1,$dash_space=4) {
1326
1327 if( $this->line_weight <= 0 ) return;
1328
1329 // Add error check to make sure anti-alias is not enabled.
1330 // Dashed line does not work with anti-alias enabled. This
1331 // is a limitation in GD.
1332 if( $this->use_anti_aliasing ) {
1333// JpGraphError::RaiseL(25129); // Anti-alias can not be used with dashed lines. Please disable anti-alias or use solid lines.
1334 }
1335
1336 $x1 = round($x1);
1337 $x2 = round($x2);
1338 $y1 = round($y1);
1339 $y2 = round($y2);
1340
1341 $dash_length *= SUPERSAMPLING_SCALE;
1342 $dash_space *= SUPERSAMPLING_SCALE;
1343
1344 $style = array_fill(0,$dash_length,$this->current_color);
1345 $style = array_pad($style,$dash_space,IMG_COLOR_TRANSPARENT);
1346 imagesetstyle($this->img, $style);
1347 imageline($this->img, $x1, $y1, $x2, $y2, IMG_COLOR_STYLED);
1348
1349 $this->lastx = $x2;
1350 $this->lasty = $y2;
1351 }
1352
1353 function DashedLineForGrid($x1,$y1,$x2,$y2,$dash_length=1,$dash_space=4) {
1354
1355 if( $this->line_weight <= 0 ) return;
1356
1357 // Add error check to make sure anti-alias is not enabled.
1358 // Dashed line does not work with anti-alias enabled. This
1359 // is a limitation in GD.
1360 if( $this->use_anti_aliasing ) {
1361// JpGraphError::RaiseL(25129); // Anti-alias can not be used with dashed lines. Please disable anti-alias or use solid lines.
1362 }
1363
1364 $x1 = round($x1);
1365 $x2 = round($x2);
1366 $y1 = round($y1);
1367 $y2 = round($y2);
1368
1369 /*
1370 $dash_length *= $this->scale;
1371 $dash_space *= $this->scale;
1372 */
1373
1374 $dash_length = 2;
1375 $dash_length = 4;
1376 imagesetthickness($this->img, 1);
1377 $style = array_fill(0,$dash_length, $this->current_color); //hexdec('CCCCCC'));
1378 $style = array_pad($style,$dash_space,IMG_COLOR_TRANSPARENT);
1379 imagesetstyle($this->img, $style);
1380 imageline($this->img, $x1, $y1, $x2, $y2, IMG_COLOR_STYLED);
1381
1382 $this->lastx = $x2;
1383 $this->lasty = $y2;
1384 }
1385
1386 function Line($x1,$y1,$x2,$y2) {
1387
1388 if( $this->line_weight <= 0 ) return;
1389
1390 $x1 = round($x1);
1391 $x2 = round($x2);
1392 $y1 = round($y1);
1393 $y2 = round($y2);
1394
1395 imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
1396// $this->DrawLine($this->img, $x1, $y1, $x2, $y2, $this->line_weight, $this->current_color);
1397 $this->lastx=$x2;
1398 $this->lasty=$y2;
1399 }
1400
1401 function Polygon($p,$closed=FALSE,$fast=FALSE) {
1402
1403 if( $this->line_weight <= 0 ) return;
1404
1405 $n=count($p);
1406 $oldx = $p[0];
1407 $oldy = $p[1];
1408 if( $fast ) {
1409 for( $i=2; $i < $n; $i+=2 ) {
1410 imageline($this->img,$oldx,$oldy,$p[$i],$p[$i+1],$this->current_color);
1411 $oldx = $p[$i];
1412 $oldy = $p[$i+1];
1413 }
1414 if( $closed ) {
1415 imageline($this->img,$p[$n*2-2],$p[$n*2-1],$p[0],$p[1],$this->current_color);
1416 }
1417 }
1418 else {
1419 for( $i=2; $i < $n; $i+=2 ) {
1420 $this->StyleLine($oldx,$oldy,$p[$i],$p[$i+1]);
1421 $oldx = $p[$i];
1422 $oldy = $p[$i+1];
1423 }
1424 if( $closed ) {
1425 $this->StyleLine($oldx,$oldy,$p[0],$p[1]);
1426 }
1427 }
1428 }
1429
1430 function FilledPolygon($pts) {
1431 $n=count($pts);
1432 if( $n == 0 ) {
1433 JpGraphError::RaiseL(25105);//('NULL data specified for a filled polygon. Check that your data is not NULL.');
1434 }
1435 for($i=0; $i < $n; ++$i) {
1436 $pts[$i] = round($pts[$i]);
1437 }
1438 $old = $this->line_weight;
1439 imagesetthickness($this->img,1);
1440 imagefilledpolygon($this->img,$pts,count($pts)/2,$this->current_color);
1441 $this->line_weight = $old;
1442 imagesetthickness($this->img,$old);
1443 }
1444
1445 function Rectangle($xl,$yu,$xr,$yl) {
1446 $this->Polygon(array($xl,$yu,$xr,$yu,$xr,$yl,$xl,$yl,$xl,$yu));
1447 }
1448
1449 function FilledRectangle($xl,$yu,$xr,$yl) {
1450 $this->FilledPolygon(array($xl,$yu,$xr,$yu,$xr,$yl,$xl,$yl));
1451 }
1452
1453 function FilledRectangle2($xl,$yu,$xr,$yl,$color1,$color2,$style=1) {
1454 // Fill a rectangle with lines of two colors
1455 if( $style===1 ) {
1456 // Horizontal stripe
1457 if( $yl < $yu ) {
1458 $t = $yl; $yl=$yu; $yu=$t;
1459 }
1460 for( $y=$yu; $y <= $yl; ++$y) {
1461 $this->SetColor($color1);
1462 $this->Line($xl,$y,$xr,$y);
1463 ++$y;
1464 $this->SetColor($color2);
1465 $this->Line($xl,$y,$xr,$y);
1466 }
1467 }
1468 else {
1469 if( $xl < $xl ) {
1470 $t = $xl; $xl=$xr; $xr=$t;
1471 }
1472 for( $x=$xl; $x <= $xr; ++$x) {
1473 $this->SetColor($color1);
1474 $this->Line($x,$yu,$x,$yl);
1475 ++$x;
1476 $this->SetColor($color2);
1477 $this->Line($x,$yu,$x,$yl);
1478 }
1479 }
1480 }
1481
1482 function ShadowRectangle($xl,$yu,$xr,$yl,$fcolor=false,$shadow_width=4,$shadow_color='darkgray',$useAlpha=true) {
1483 // This is complicated by the fact that we must also handle the case where
1484 // the reactangle has no fill color
1485 $xl = floor($xl);
1486 $yu = floor($yu);
1487 $xr = floor($xr);
1488 $yl = floor($yl);
1489 $this->PushColor($shadow_color);
1490 $shadowAlpha=0;
1491 $this->SetLineWeight(1);
1492 $this->SetLineStyle('solid');
1493 $basecolor = $this->rgb->Color($shadow_color);
1494 $shadow_color = array($basecolor[0],$basecolor[1],$basecolor[2],);
1495 for( $i=0; $i < $shadow_width; ++$i ) {
1496 $this->SetColor($shadow_color,$shadowAlpha);
1497 $this->Line($xr-$shadow_width+$i, $yu+$shadow_width,
1498 $xr-$shadow_width+$i, $yl-$shadow_width-1+$i);
1499 $this->Line($xl+$shadow_width, $yl-$shadow_width+$i,
1500 $xr-$shadow_width+$i, $yl-$shadow_width+$i);
1501 if( $useAlpha ) $shadowAlpha += 1.0/$shadow_width;
1502 }
1503
1504 $this->PopColor();
1505 if( $fcolor==false ) {
1506 $this->Rectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
1507 }
1508 else {
1509 $this->PushColor($fcolor);
1510 $this->FilledRectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
1511 $this->PopColor();
1512 $this->Rectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
1513 }
1514 }
1515
1516 function FilledRoundedRectangle($xt,$yt,$xr,$yl,$r=5) {
1517 if( $r==0 ) {
1518 $this->FilledRectangle($xt,$yt,$xr,$yl);
1519 return;
1520 }
1521
1522 // To avoid overlapping fillings (which will look strange
1523 // when alphablending is enabled) we have no choice but
1524 // to fill the five distinct areas one by one.
1525
1526 // Center square
1527 $this->FilledRectangle($xt+$r,$yt+$r,$xr-$r,$yl-$r);
1528 // Top band
1529 $this->FilledRectangle($xt+$r,$yt,$xr-$r,$yt+$r);
1530 // Bottom band
1531 $this->FilledRectangle($xt+$r,$yl-$r,$xr-$r,$yl);
1532 // Left band
1533 $this->FilledRectangle($xt,$yt+$r,$xt+$r,$yl-$r);
1534 // Right band
1535 $this->FilledRectangle($xr-$r,$yt+$r,$xr,$yl-$r);
1536
1537 // Topleft & Topright arc
1538 $this->FilledArc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
1539 $this->FilledArc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
1540
1541 // Bottomleft & Bottom right arc
1542 $this->FilledArc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
1543 $this->FilledArc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
1544
1545 }
1546
1547 function RoundedRectangle($xt,$yt,$xr,$yl,$r=5) {
1548
1549 if( $r==0 ) {
1550 $this->Rectangle($xt,$yt,$xr,$yl);
1551 return;
1552 }
1553
1554 // Top & Bottom line
1555 $this->Line($xt+$r,$yt,$xr-$r,$yt);
1556 $this->Line($xt+$r,$yl,$xr-$r,$yl);
1557
1558 // Left & Right line
1559 $this->Line($xt,$yt+$r,$xt,$yl-$r);
1560 $this->Line($xr,$yt+$r,$xr,$yl-$r);
1561
1562 // Topleft & Topright arc
1563 $this->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
1564 $this->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
1565
1566 // Bottomleft & Bottomright arc
1567 $this->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
1568 $this->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
1569 }
1570
1571 function FilledBevel($x1,$y1,$x2,$y2,$depth=2,$color1='white@0.4',$color2='darkgray@0.4') {
1572 $this->FilledRectangle($x1,$y1,$x2,$y2);
1573 $this->Bevel($x1,$y1,$x2,$y2,$depth,$color1,$color2);
1574 }
1575
1576 function Bevel($x1,$y1,$x2,$y2,$depth=2,$color1='white@0.4',$color2='black@0.5') {
1577 $this->PushColor($color1);
1578 for( $i=0; $i < $depth; ++$i ) {
1579 $this->Line($x1+$i,$y1+$i,$x1+$i,$y2-$i);
1580 $this->Line($x1+$i,$y1+$i,$x2-$i,$y1+$i);
1581 }
1582 $this->PopColor();
1583
1584 $this->PushColor($color2);
1585 for( $i=0; $i < $depth; ++$i ) {
1586 $this->Line($x1+$i,$y2-$i,$x2-$i,$y2-$i);
1587 $this->Line($x2-$i,$y1+$i,$x2-$i,$y2-$i-1);
1588 }
1589 $this->PopColor();
1590 }
1591
1592 function StyleLineTo($x,$y) {
1593 $this->StyleLine($this->lastx,$this->lasty,$x,$y);
1594 $this->lastx=$x;
1595 $this->lasty=$y;
1596 }
1597
1598 function LineTo($x,$y) {
1599 $this->Line($this->lastx,$this->lasty,$x,$y);
1600 $this->lastx=$x;
1601 $this->lasty=$y;
1602 }
1603
1604 function Point($x,$y) {
1605 imagesetpixel($this->img,round($x),round($y),$this->current_color);
1606 }
1607
1608 function Fill($x,$y) {
1609 imagefill($this->img,round($x),round($y),$this->current_color);
1610 }
1611
1612 function FillToBorder($x,$y,$aBordColor) {
1613 $bc = $this->rgb->allocate($aBordColor);
1614 if( $bc == -1 ) {
1615 JpGraphError::RaiseL(25106);//('Image::FillToBorder : Can not allocate more colors');
1616 }
1617 imagefilltoborder($this->img,round($x),round($y),$bc,$this->current_color);
1618 }
1619
1620 function SetExpired($aFlg=true) {
1621 $this->expired = $aFlg;
1622 }
1623
1624 // Generate image header
1625 function Headers() {
1626
1627 // In case we are running from the command line with the client version of
1628 // PHP we can't send any headers.
1629 $sapi = php_sapi_name();
1630 if( $sapi == 'cli' ) return;
1631
1632 // These parameters are set by headers_sent() but they might cause
1633 // an undefined variable error unless they are initilized
1634 $file='';
1635 $lineno='';
1636 if( headers_sent($file,$lineno) ) {
1637 $file=basename($file);
1638 $t = new ErrMsgText();
1639 $msg = $t->Get(10,$file,$lineno);
1640 die($msg);
1641 }
1642
1643 if ($this->expired) {
1644 header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
1645 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
1646 header("Cache-Control: no-cache, must-revalidate");
1647 header("Pragma: no-cache");
1648 }
1649 header("Content-type: image/$this->img_format");
1650 }
1651
1652 // Adjust image quality for formats that allow this
1653 function SetQuality($q) {
1654 $this->quality = $q;
1655 }
1656
1657 // Stream image to browser or to file
1658 function Stream($aFile=NULL) {
1659 $this->DoSupersampling();
1660
1661 $func="image".$this->img_format;
1662 if( $this->img_format=="jpeg" && $this->quality != null ) {
1663 $res = @$func($this->img,$aFile,$this->quality);
1664
1665 if(!$res){
1666 if($aFile != NULL){
1667 JpGraphError::RaiseL(25107,$aFile);//("Can't write to file '$aFile'. Check that the process running PHP has enough permission.");
1668 }else{
1669 JpGraphError::RaiseL(25108);//("Can't stream image. This is most likely due to a faulty PHP/GD setup. Try to recompile PHP and use the built-in GD library that comes with PHP.");
1670 }
1671
1672 }
1673 }
1674 else {
1675 if( $aFile != NULL ) {
1676 $res = @$func($this->img,$aFile);
1677 if( !$res ) {
1678 JpGraphError::RaiseL(25107,$aFile);//("Can't write to file '$aFile'. Check that the process running PHP has enough permission.");
1679 }
1680 }
1681 else {
1682 $res = @$func($this->img);
1683 if( !$res ) {
1684 JpGraphError::RaiseL(25108);//("Can't stream image. This is most likely due to a faulty PHP/GD setup. Try to recompile PHP and use the built-in GD library that comes with PHP.");
1685 }
1686
1687 }
1688 }
1689 }
1690
1691 // Do SuperSampling using $scale
1692 function DoSupersampling() {
1693 if (SUPERSAMPLING_SCALE <= 1) {
1694 return $this->img;
1695 }
1696
1697 $dst_img = @imagecreatetruecolor($this->original_width, $this->original_height);
1698 imagecopyresampled($dst_img, $this->img, 0, 0, 0, 0, $this->original_width, $this->original_height, $this->width, $this->height);
1699 $this->Destroy();
1700 return $this->img = $dst_img;
1701 }
1702
1703 // Clear resources used by image (this is normally not used since all resources are/should be
1704 // returned when the script terminates
1705 function Destroy() {
1706 imagedestroy($this->img);
1707 }
1708
1709 // Specify image format. Note depending on your installation
1710 // of PHP not all formats may be supported.
1711 function SetImgFormat($aFormat,$aQuality=75) {
1712 $this->quality = $aQuality;
1713 $aFormat = strtolower($aFormat);
1714 $tst = true;
1715 $supported = imagetypes();
1716 if( $aFormat=="auto" ) {
1717 if( $supported & IMG_PNG ) $this->img_format="png";
1718 elseif( $supported & IMG_JPG ) $this->img_format="jpeg";
1719 elseif( $supported & IMG_GIF ) $this->img_format="gif";
1720 elseif( $supported & IMG_WBMP ) $this->img_format="wbmp";
1721 elseif( $supported & IMG_XPM ) $this->img_format="xpm";
1722 else {
1723 JpGraphError::RaiseL(25109);//("Your PHP (and GD-lib) installation does not appear to support any known graphic formats. You need to first make sure GD is compiled as a module to PHP. If you also want to use JPEG images you must get the JPEG library. Please see the PHP docs for details.");
1724 }
1725 return true;
1726 }
1727 else {
1728 if( $aFormat=="jpeg" || $aFormat=="png" || $aFormat=="gif" ) {
1729 if( $aFormat=="jpeg" && !($supported & IMG_JPG) ) $tst=false;
1730 elseif( $aFormat=="png" && !($supported & IMG_PNG) ) $tst=false;
1731 elseif( $aFormat=="gif" && !($supported & IMG_GIF) ) $tst=false;
1732 elseif( $aFormat=="wbmp" && !($supported & IMG_WBMP) ) $tst=false;
1733 elseif( $aFormat=="xpm" && !($supported & IMG_XPM) ) $tst=false;
1734 else {
1735 $this->img_format=$aFormat;
1736 return true;
1737 }
1738 }
1739 else {
1740 $tst=false;
1741 }
1742 if( !$tst ) {
1743 JpGraphError::RaiseL(25110,$aFormat);//(" Your PHP installation does not support the chosen graphic format: $aFormat");
1744 }
1745 }
1746 }
1747
1748 /**
1749 * Draw Line
1750 */
1751 function DrawLine($im, $x1, $y1, $x2, $y2, $weight, $color) {
1752 if ($weight == 1) {
1753 return imageline($im,$x1,$y1,$x2,$y2,$color);
1754 }
1755
1756 $angle=(atan2(($y1 - $y2), ($x2 - $x1)));
1757
1758 $dist_x = $weight * (sin($angle)) / 2;
1759 $dist_y = $weight * (cos($angle)) / 2;
1760
1761 $p1x=ceil(($x1 + $dist_x));
1762 $p1y=ceil(($y1 + $dist_y));
1763 $p2x=ceil(($x2 + $dist_x));
1764 $p2y=ceil(($y2 + $dist_y));
1765 $p3x=ceil(($x2 - $dist_x));
1766 $p3y=ceil(($y2 - $dist_y));
1767 $p4x=ceil(($x1 - $dist_x));
1768 $p4y=ceil(($y1 - $dist_y));
1769
1770 $array=array($p1x,$p1y,$p2x,$p2y,$p3x,$p3y,$p4x,$p4y);
1771 imagefilledpolygon ( $im, $array, (count($array)/2), $color );
1772
1773 // for antialias
1774 imageline($im, $p1x, $p1y, $p2x, $p2y, $color);
1775 imageline($im, $p3x, $p3y, $p4x, $p4y, $color);
1776 return;
1777
1778
1779
1780 return imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
1781 $weight = 8;
1782 if ($weight <= 1) {
1783 return imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
1784 }
1785
1786 $pts = array();
1787
1788 $weight /= 2;
1789
1790 if ($y2 - $y1 == 0) {
1791 // x line
1792 $pts = array();
1793 $pts[] = $x1; $pts[] = $y1 - $weight;
1794 $pts[] = $x1; $pts[] = $y1 + $weight;
1795 $pts[] = $x2; $pts[] = $y2 + $weight;
1796 $pts[] = $x2; $pts[] = $y2 - $weight;
1797
1798 } elseif ($x2 - $x1 == 0) {
1799 // y line
1800 $pts = array();
1801 $pts[] = $x1 - $weight; $pts[] = $y1;
1802 $pts[] = $x1 + $weight; $pts[] = $y1;
1803 $pts[] = $x2 + $weight; $pts[] = $y2;
1804 $pts[] = $x2 - $weight; $pts[] = $y2;
1805
1806 } else {
1807
1808 var_dump($x1, $x2, $y1, $y2);
1809 $length = sqrt(pow($x2 - $x1, 2) + pow($y2 - $y1, 2));
1810 var_dump($length);exit;
1811 exit;
1812
1813/*
1814 $lean = ($y2 - $y1) / ($x2 - $x1);
1815 $lean2 = -1 / $lean;
1816 $sin = $lean / ($y2 - $y1);
1817 $cos = $lean / ($x2 - $x1);
1818
1819 $pts[] = $x1 + (-$weight * $sin); $pts[] = $y1 + (-$weight * $cos);
1820 $pts[] = $x1 + (+$weight * $sin); $pts[] = $y1 + (+$weight * $cos);
1821 $pts[] = $x2 + (+$weight * $sin); $pts[] = $y2 + (+$weight * $cos);
1822 $pts[] = $x2 + (-$weight * $sin); $pts[] = $y2 + (-$weight * $cos);
1823*/
1824 }
1825
1826//print_r($pts);exit;
1827 if (count($pts)/2 < 3) {
1828 return;
1829 }
1830
1831 imagesetthickness($im, 1);
1832 imagefilledpolygon($im, $pts,count($pts)/2, $color);
1833
1834
1835 $weight *= 2;
1836
1837// $this->DrawImageSmoothArc($im, $x1, $y1, $weight, $weight, 0, 360, $color);
1838// $this->DrawImageSmoothArc($im, $x2, $y2, $weight, $weight, 0, 360, $color);
1839 }
1840
1841
1842 function DrawImageSmoothArc($im, $xc, $yc, $w, $h, $s, $e, $color, $style = null) {
1843 $tmp = $s;
1844 $s = (360 - $e) / 180 * M_PI;
1845 $e = (360 - $tmp) / 180 * M_PI;
1846 return imageSmoothArc($im, round($xc), round($yc), round($w), round($h), $this->CreateColorForImageSmoothArc($color), $s, $e);
1847 }
1848
1849 function CreateColorForImageSmoothArc($color) {
1850 $alpha = $color >> 24 & 0xFF;
1851 $red = $color >> 16 & 0xFF;
1852 $green = $color >> 8 & 0xFF;
1853 $blue = $color & 0xFF;
1854
1855//var_dump($alpha, $red, $green, $blue);exit;
1856
1857 return array($red, $green, $blue, $alpha);
1858 }
1859
1860 function imageSmoothCircle( &$img, $cx, $cy, $cr, $color ) {
1861 $ir = $cr;
1862 $ix = 0;
1863 $iy = $ir;
1864 $ig = 2 * $ir - 3;
1865 $idgr = -6;
1866 $idgd = 4 * $ir - 10;
1867 $fill = imageColorExactAlpha( $img, $color[ 'R' ], $color[ 'G' ], $color[ 'B' ], 0 );
1868 imageLine( $img, $cx + $cr - 1, $cy, $cx, $cy, $fill );
1869 imageLine( $img, $cx - $cr + 1, $cy, $cx - 1, $cy, $fill );
1870 imageLine( $img, $cx, $cy + $cr - 1, $cx, $cy + 1, $fill );
1871 imageLine( $img, $cx, $cy - $cr + 1, $cx, $cy - 1, $fill );
1872 $draw = imageColorExactAlpha( $img, $color[ 'R' ], $color[ 'G' ], $color[ 'B' ], 42 );
1873 imageSetPixel( $img, $cx + $cr, $cy, $draw );
1874 imageSetPixel( $img, $cx - $cr, $cy, $draw );
1875 imageSetPixel( $img, $cx, $cy + $cr, $draw );
1876 imageSetPixel( $img, $cx, $cy - $cr, $draw );
1877 while ( $ix <= $iy - 2 ) {
1878 if ( $ig < 0 ) {
1879 $ig += $idgd;
1880 $idgd -= 8;
1881 $iy--;
1882 } else {
1883 $ig += $idgr;
1884 $idgd -= 4;
1885 }
1886 $idgr -= 4;
1887 $ix++;
1888 imageLine( $img, $cx + $ix, $cy + $iy - 1, $cx + $ix, $cy + $ix, $fill );
1889 imageLine( $img, $cx + $ix, $cy - $iy + 1, $cx + $ix, $cy - $ix, $fill );
1890 imageLine( $img, $cx - $ix, $cy + $iy - 1, $cx - $ix, $cy + $ix, $fill );
1891 imageLine( $img, $cx - $ix, $cy - $iy + 1, $cx - $ix, $cy - $ix, $fill );
1892 imageLine( $img, $cx + $iy - 1, $cy + $ix, $cx + $ix, $cy + $ix, $fill );
1893 imageLine( $img, $cx + $iy - 1, $cy - $ix, $cx + $ix, $cy - $ix, $fill );
1894 imageLine( $img, $cx - $iy + 1, $cy + $ix, $cx - $ix, $cy + $ix, $fill );
1895 imageLine( $img, $cx - $iy + 1, $cy - $ix, $cx - $ix, $cy - $ix, $fill );
1896 $filled = 0;
1897 for ( $xx = $ix - 0.45; $xx < $ix + 0.5; $xx += 0.2 ) {
1898 for ( $yy = $iy - 0.45; $yy < $iy + 0.5; $yy += 0.2 ) {
1899 if ( sqrt( pow( $xx, 2 ) + pow( $yy, 2 ) ) < $cr ) $filled += 4;
1900 }
1901 }
1902 $draw = imageColorExactAlpha( $img, $color[ 'R' ], $color[ 'G' ], $color[ 'B' ], ( 100 - $filled ) );
1903 imageSetPixel( $img, $cx + $ix, $cy + $iy, $draw );
1904 imageSetPixel( $img, $cx + $ix, $cy - $iy, $draw );
1905 imageSetPixel( $img, $cx - $ix, $cy + $iy, $draw );
1906 imageSetPixel( $img, $cx - $ix, $cy - $iy, $draw );
1907 imageSetPixel( $img, $cx + $iy, $cy + $ix, $draw );
1908 imageSetPixel( $img, $cx + $iy, $cy - $ix, $draw );
1909 imageSetPixel( $img, $cx - $iy, $cy + $ix, $draw );
1910 imageSetPixel( $img, $cx - $iy, $cy - $ix, $draw );
1911 }
1912 }
1913
1914 function __get($name) {
1915
1916 if (strpos($name, 'raw_') !== false) {
1917 // if $name == 'raw_left_margin' , return $this->_left_margin;
1918 $variable_name = '_' . str_replace('raw_', '', $name);
1919 return $this->$variable_name;
1920 }
1921
1922 $variable_name = '_' . $name;
1923
1924 if (isset($this->$variable_name)) {
1925 return $this->$variable_name * SUPERSAMPLING_SCALE;
1926 } else {
1927 JpGraphError::RaiseL('25132', $name);
1928 }
1929 }
1930
1931 function __set($name, $value) {
1932 $this->{'_'.$name} = $value;
1933 }
1934
1935} // CLASS
1936
1937//===================================================
1938// CLASS RotImage
1939// Description: Exactly as Image but draws the image at
1940// a specified angle around a specified rotation point.
1941//===================================================
1942class RotImage extends Image {
1943 public $a=0;
1944 public $dx=0,$dy=0,$transx=0,$transy=0;
1945 private $m=array();
1946
1947 function __construct($aWidth,$aHeight,$a=0,$aFormat=DEFAULT_GFORMAT,$aSetAutoMargin=true) {
1948 parent::__construct($aWidth,$aHeight,$aFormat,$aSetAutoMargin);
1949 $this->dx=$this->width/2;
1950 $this->dy=$this->height/2;
1951 $this->SetAngle($a);
1952 }
1953
1954 function SetCenter($dx,$dy) {
1955 $old_dx = $this->dx;
1956 $old_dy = $this->dy;
1957 $this->dx=$dx;
1958 $this->dy=$dy;
1959 $this->SetAngle($this->a);
1960 return array($old_dx,$old_dy);
1961 }
1962
1963 function SetTranslation($dx,$dy) {
1964 $old = array($this->transx,$this->transy);
1965 $this->transx = $dx;
1966 $this->transy = $dy;
1967 return $old;
1968 }
1969
1970 function UpdateRotMatrice() {
1971 $a = $this->a;
1972 $a *= M_PI/180;
1973 $sa=sin($a); $ca=cos($a);
1974 // Create the rotation matrix
1975 $this->m[0][0] = $ca;
1976 $this->m[0][1] = -$sa;
1977 $this->m[0][2] = $this->dx*(1-$ca) + $sa*$this->dy ;
1978 $this->m[1][0] = $sa;
1979 $this->m[1][1] = $ca;
1980 $this->m[1][2] = $this->dy*(1-$ca) - $sa*$this->dx ;
1981 }
1982
1983 function SetAngle($a) {
1984 $tmp = $this->a;
1985 $this->a = $a;
1986 $this->UpdateRotMatrice();
1987 return $tmp;
1988 }
1989
1990 function Circle($xc,$yc,$r) {
1991 list($xc,$yc) = $this->Rotate($xc,$yc);
1992 parent::Circle($xc,$yc,$r);
1993 }
1994
1995 function FilledCircle($xc,$yc,$r) {
1996 list($xc,$yc) = $this->Rotate($xc,$yc);
1997 parent::FilledCircle($xc,$yc,$r);
1998 }
1999
2000
2001 function Arc($xc,$yc,$w,$h,$s,$e) {
2002 list($xc,$yc) = $this->Rotate($xc,$yc);
2003 $s += $this->a;
2004 $e += $this->a;
2005 parent::Arc($xc,$yc,$w,$h,$s,$e);
2006 }
2007
2008 function FilledArc($xc,$yc,$w,$h,$s,$e,$style='') {
2009 list($xc,$yc) = $this->Rotate($xc,$yc);
2010 $s += $this->a;
2011 $e += $this->a;
2012 parent::FilledArc($xc,$yc,$w,$h,$s,$e);
2013 }
2014
2015 function SetMargin($lm,$rm,$tm,$bm) {
2016 parent::SetMargin($lm,$rm,$tm,$bm);
2017 $this->UpdateRotMatrice();
2018 }
2019
2020 function Rotate($x,$y) {
2021 // Optimization. Ignore rotation if Angle==0 || Angle==360
2022 if( $this->a == 0 || $this->a == 360 ) {
2023 return array($x + $this->transx, $y + $this->transy );
2024 }
2025 else {
2026 $x1=round($this->m[0][0]*$x + $this->m[0][1]*$y,1) + $this->m[0][2] + $this->transx;
2027 $y1=round($this->m[1][0]*$x + $this->m[1][1]*$y,1) + $this->m[1][2] + $this->transy;
2028 return array($x1,$y1);
2029 }
2030 }
2031
2032 function CopyMerge($fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth=-1,$fromHeight=-1,$aMix=100) {
2033 list($toX,$toY) = $this->Rotate($toX,$toY);
2034 parent::CopyMerge($fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth,$fromHeight,$aMix);
2035
2036 }
2037
2038 function ArrRotate($pnts) {
2039 $n = count($pnts)-1;
2040 for($i=0; $i < $n; $i+=2) {
2041 list ($x,$y) = $this->Rotate($pnts[$i],$pnts[$i+1]);
2042 $pnts[$i] = $x; $pnts[$i+1] = $y;
2043 }
2044 return $pnts;
2045 }
2046
2047 function DashedLine($x1,$y1,$x2,$y2,$dash_length=1,$dash_space=4) {
2048 list($x1,$y1) = $this->Rotate($x1,$y1);
2049 list($x2,$y2) = $this->Rotate($x2,$y2);
2050 parent::DashedLine($x1,$y1,$x2,$y2,$dash_length,$dash_space);
2051 }
2052
2053 function Line($x1,$y1,$x2,$y2) {
2054 list($x1,$y1) = $this->Rotate($x1,$y1);
2055 list($x2,$y2) = $this->Rotate($x2,$y2);
2056 parent::Line($x1,$y1,$x2,$y2);
2057 }
2058
2059 function Rectangle($x1,$y1,$x2,$y2) {
2060 // Rectangle uses Line() so it will be rotated through that call
2061 parent::Rectangle($x1,$y1,$x2,$y2);
2062 }
2063
2064 function FilledRectangle($x1,$y1,$x2,$y2) {
2065 if( $y1==$y2 || $x1==$x2 )
2066 $this->Line($x1,$y1,$x2,$y2);
2067 else
2068 $this->FilledPolygon(array($x1,$y1,$x2,$y1,$x2,$y2,$x1,$y2));
2069 }
2070
2071 function Polygon($pnts,$closed=FALSE,$fast=FALSE) {
2072 // Polygon uses Line() so it will be rotated through that call unless
2073 // fast drawing routines are used in which case a rotate is needed
2074 if( $fast ) {
2075 parent::Polygon($this->ArrRotate($pnts));
2076 }
2077 else {
2078 parent::Polygon($pnts,$closed,$fast);
2079 }
2080 }
2081
2082 function FilledPolygon($pnts) {
2083 parent::FilledPolygon($this->ArrRotate($pnts));
2084 }
2085
2086 function Point($x,$y) {
2087 list($xp,$yp) = $this->Rotate($x,$y);
2088 parent::Point($xp,$yp);
2089 }
2090
2091 function StrokeText($x,$y,$txt,$dir=0,$paragraph_align="left",$debug=false) {
2092 list($xp,$yp) = $this->Rotate($x,$y);
2093 return parent::StrokeText($xp,$yp,$txt,$dir,$paragraph_align,$debug);
2094 }
2095}
2096
2097//=======================================================================
2098// CLASS ImgStreamCache
2099// Description: Handle caching of graphs to files. All image output goes
2100// through this class
2101//=======================================================================
2102class ImgStreamCache {
2103 private $cache_dir, $timeout=0; // Infinite timeout
2104 //---------------
2105 // CONSTRUCTOR
2106 function __construct($aCacheDir=CACHE_DIR) {
2107 $this->cache_dir = $aCacheDir;
2108 }
2109
2110 //---------------
2111 // PUBLIC METHODS
2112
2113 // Specify a timeout (in minutes) for the file. If the file is older then the
2114 // timeout value it will be overwritten with a newer version.
2115 // If timeout is set to 0 this is the same as infinite large timeout and if
2116 // timeout is set to -1 this is the same as infinite small timeout
2117 function SetTimeout($aTimeout) {
2118 $this->timeout=$aTimeout;
2119 }
2120
2121 // Output image to browser and also write it to the cache
2122 function PutAndStream($aImage,$aCacheFileName,$aInline,$aStrokeFileName) {
2123
2124 // Check if we should always stroke the image to a file
2125 if( _FORCE_IMGTOFILE ) {
2126 $aStrokeFileName = _FORCE_IMGDIR.GenImgName();
2127 }
2128
2129 if( $aStrokeFileName != '' ) {
2130
2131 if( $aStrokeFileName == 'auto' ) {
2132 $aStrokeFileName = GenImgName();
2133 }
2134
2135 if( file_exists($aStrokeFileName) ) {
2136
2137 // Wait for lock (to make sure no readers are trying to access the image)
2138 $fd = fopen($aStrokeFileName,'w');
2139 $lock = flock($fd, LOCK_EX);
2140
2141 // Since the image write routines only accepts a filename which must not
2142 // exist we need to delete the old file first
2143 if( !@unlink($aStrokeFileName) ) {
2144 $lock = flock($fd, LOCK_UN);
2145 JpGraphError::RaiseL(25111,$aStrokeFileName);
2146 //(" Can't delete cached image $aStrokeFileName. Permission problem?");
2147 }
2148 $aImage->Stream($aStrokeFileName);
2149 $lock = flock($fd, LOCK_UN);
2150 fclose($fd);
2151
2152 }
2153 else {
2154 $aImage->Stream($aStrokeFileName);
2155 }
2156
2157 return;
2158 }
2159
2160 if( $aCacheFileName != '' && USE_CACHE) {
2161
2162 $aCacheFileName = $this->cache_dir . $aCacheFileName;
2163 if( file_exists($aCacheFileName) ) {
2164 if( !$aInline ) {
2165 // If we are generating image off-line (just writing to the cache)
2166 // and the file exists and is still valid (no timeout)
2167 // then do nothing, just return.
2168 $diff=time()-filemtime($aCacheFileName);
2169 if( $diff < 0 ) {
2170 JpGraphError::RaiseL(25112,$aCacheFileName);
2171 //(" Cached imagefile ($aCacheFileName) has file date in the future!!");
2172 }
2173 if( $this->timeout>0 && ($diff <= $this->timeout*60) ) return;
2174 }
2175
2176 // Wait for lock (to make sure no readers are trying to access the image)
2177 $fd = fopen($aCacheFileName,'w');
2178 $lock = flock($fd, LOCK_EX);
2179
2180 if( !@unlink($aCacheFileName) ) {
2181 $lock = flock($fd, LOCK_UN);
2182 JpGraphError::RaiseL(25113,$aStrokeFileName);
2183 //(" Can't delete cached image $aStrokeFileName. Permission problem?");
2184 }
2185 $aImage->Stream($aCacheFileName);
2186 $lock = flock($fd, LOCK_UN);
2187 fclose($fd);
2188
2189 }
2190 else {
2191 $this->MakeDirs(dirname($aCacheFileName));
2192 if( !is_writeable(dirname($aCacheFileName)) ) {
2193 JpGraphError::RaiseL(25114,$aCacheFileName);
2194 //('PHP has not enough permissions to write to the cache file '.$aCacheFileName.'. Please make sure that the user running PHP has write permission for this file if you wan to use the cache system with JpGraph.');
2195 }
2196 $aImage->Stream($aCacheFileName);
2197 }
2198
2199 $res=true;
2200 // Set group to specified
2201 if( CACHE_FILE_GROUP != '' ) {
2202 $res = @chgrp($aCacheFileName,CACHE_FILE_GROUP);
2203 }
2204 if( CACHE_FILE_MOD != '' ) {
2205 $res = @chmod($aCacheFileName,CACHE_FILE_MOD);
2206 }
2207 if( !$res ) {
2208 JpGraphError::RaiseL(25115,$aStrokeFileName);
2209 //(" Can't set permission for cached image $aStrokeFileName. Permission problem?");
2210 }
2211
2212 $aImage->Destroy();
2213 if( $aInline ) {
2214 if ($fh = @fopen($aCacheFileName, "rb") ) {
2215 $aImage->Headers();
2216 fpassthru($fh);
2217 return;
2218 }
2219 else {
2220 JpGraphError::RaiseL(25116,$aFile);//(" Cant open file from cache [$aFile]");
2221 }
2222 }
2223 }
2224 elseif( $aInline ) {
2225 $aImage->Headers();
2226 $aImage->Stream();
2227 return;
2228 }
2229 }
2230
2231 function IsValid($aCacheFileName) {
2232 $aCacheFileName = $this->cache_dir.$aCacheFileName;
2233 if ( USE_CACHE && file_exists($aCacheFileName) ) {
2234 $diff=time()-filemtime($aCacheFileName);
2235 if( $this->timeout>0 && ($diff > $this->timeout*60) ) {
2236 return false;
2237 }
2238 else {
2239 return true;
2240 }
2241 }
2242 else {
2243 return false;
2244 }
2245 }
2246
2247 function StreamImgFile($aImage,$aCacheFileName) {
2248 $aCacheFileName = $this->cache_dir.$aCacheFileName;
2249 if ( $fh = @fopen($aCacheFileName, 'rb') ) {
2250 $lock = flock($fh, LOCK_SH);
2251 $aImage->Headers();
2252 fpassthru($fh);
2253 $lock = flock($fh, LOCK_UN);
2254 fclose($fh);
2255 return true;
2256 }
2257 else {
2258 JpGraphError::RaiseL(25117,$aCacheFileName);//(" Can't open cached image \"$aCacheFileName\" for reading.");
2259 }
2260 }
2261
2262 // Check if a given image is in cache and in that case
2263 // pass it directly on to web browser. Return false if the
2264 // image file doesn't exist or exists but is to old
2265 function GetAndStream($aImage,$aCacheFileName) {
2266 if( $this->Isvalid($aCacheFileName) ) {
2267 return $this->StreamImgFile($aImage,$aCacheFileName);
2268 }
2269 else {
2270 return false;
2271 }
2272 }
2273
2274 //---------------
2275 // PRIVATE METHODS
2276 // Create all necessary directories in a path
2277 function MakeDirs($aFile) {
2278 $dirs = array();
2279 // In order to better work when open_basedir is enabled
2280 // we do not create directories in the root path
2281 while ( $aFile != '/' && !(file_exists($aFile)) ) {
2282 $dirs[] = $aFile.'/';
2283 $aFile = dirname($aFile);
2284 }
2285 for ($i = sizeof($dirs)-1; $i>=0; $i--) {
2286 if(! @mkdir($dirs[$i],0777) ) {
2287 JpGraphError::RaiseL(25118,$aFile);//(" Can't create directory $aFile. Make sure PHP has write permission to this directory.");
2288 }
2289 // We also specify mode here after we have changed group.
2290 // This is necessary if Apache user doesn't belong the
2291 // default group and hence can't specify group permission
2292 // in the previous mkdir() call
2293 if( CACHE_FILE_GROUP != "" ) {
2294 $res=true;
2295 $res =@chgrp($dirs[$i],CACHE_FILE_GROUP);
2296 $res = @chmod($dirs[$i],0777);
2297 if( !$res ) {
2298 JpGraphError::RaiseL(25119,$aFile);//(" Can't set permissions for $aFile. Permission problems?");
2299 }
2300 }
2301 }
2302 return true;
2303 }
2304} // CLASS Cache
2305
2306?>
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