source: trunk/xgraph/jpgraph/gd_image.inc.php@ 42

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