1<?php
2/*=======================================================================
3 // File:        JPGRAPH_CANVTOOLS.PHP
4 // Description: Some utilities for text and shape drawing on a canvas
5 // Created:     2002-08-23
6 // Ver:         $Id: jpgraph_canvtools.php 1857 2009-09-28 14:38:14Z ljp $
7 //
8 // Copyright (c) Asial Corporation. All rights reserved.
9 //========================================================================
10 */
11
12define('CORNER_TOPLEFT',0);
13define('CORNER_TOPRIGHT',1);
14define('CORNER_BOTTOMRIGHT',2);
15define('CORNER_BOTTOMLEFT',3);
16
17
18//===================================================
19// CLASS CanvasScale
20// Description: Define a scale for canvas so we
21// can abstract away with absolute pixels
22//===================================================
23
24class CanvasScale {
25    private $g;
26    private $w,$h;
27    private $ixmin=0,$ixmax=10,$iymin=0,$iymax=10;
28
29    function __construct($graph,$xmin=0,$xmax=10,$ymin=0,$ymax=10) {
30        $this->g = $graph;
31        $this->w = $graph->img->width;
32        $this->h = $graph->img->height;
33        $this->ixmin = $xmin;
34        $this->ixmax = $xmax;
35        $this->iymin = $ymin;
36        $this->iymax = $ymax;
37    }
38
39    function Set($xmin=0,$xmax=10,$ymin=0,$ymax=10) {
40        $this->ixmin = $xmin;
41        $this->ixmax = $xmax;
42        $this->iymin = $ymin;
43        $this->iymax = $ymax;
44    }
45
46    function Get() {
47        return array($this->ixmin,$this->ixmax,$this->iymin,$this->iymax);
48    }
49
50    function Translate($x,$y) {
51        $xp = round(($x-$this->ixmin)/($this->ixmax - $this->ixmin) * $this->w);
52        $yp = round(($y-$this->iymin)/($this->iymax - $this->iymin) * $this->h);
53        return array($xp,$yp);
54    }
55
56    function TranslateX($x) {
57        $xp = round(($x-$this->ixmin)/($this->ixmax - $this->ixmin) * $this->w);
58        return $xp;
59    }
60
61    function TranslateY($y) {
62        $yp = round(($y-$this->iymin)/($this->iymax - $this->iymin) * $this->h);
63        return $yp;
64    }
65
66}
67
68
69//===================================================
70// CLASS Shape
71// Description: Methods to draw shapes on canvas
72//===================================================
73class Shape {
74    private $img,$scale;
75
76    function __construct($aGraph,$scale) {
77        $this->img = $aGraph->img;
78        $this->img->SetColor('black');
79        $this->scale = $scale;
80    }
81
82    function SetColor($aColor) {
83        $this->img->SetColor($aColor);
84    }
85
86    function Line($x1,$y1,$x2,$y2) {
87        list($x1,$y1) = $this->scale->Translate($x1,$y1);
88        list($x2,$y2) = $this->scale->Translate($x2,$y2);
89        $this->img->Line($x1,$y1,$x2,$y2);
90    }
91
92    function SetLineWeight($aWeight) {
93        $this->img->SetLineWeight($aWeight);
94    }
95
96    function Polygon($p,$aClosed=false) {
97        $n=count($p);
98        for($i=0; $i < $n; $i+=2 ) {
99            $p[$i]   = $this->scale->TranslateX($p[$i]);
100            $p[$i+1] = $this->scale->TranslateY($p[$i+1]);
101        }
102        $this->img->Polygon($p,$aClosed);
103    }
104
105    function FilledPolygon($p) {
106        $n=count($p);
107        for($i=0; $i < $n; $i+=2 ) {
108            $p[$i]   = $this->scale->TranslateX($p[$i]);
109            $p[$i+1] = $this->scale->TranslateY($p[$i+1]);
110        }
111        $this->img->FilledPolygon($p);
112    }
113
114
115    // Draw a bezier curve with defining points in the $aPnts array
116    // using $aSteps steps.
117    // 0=x0, 1=y0
118    // 2=x1, 3=y1
119    // 4=x2, 5=y2
120    // 6=x3, 7=y3
121    function Bezier($p,$aSteps=40) {
122        $x0 = $p[0];
123        $y0 = $p[1];
124        // Calculate coefficients
125        $cx = 3*($p[2]-$p[0]);
126        $bx = 3*($p[4]-$p[2])-$cx;
127        $ax = $p[6]-$p[0]-$cx-$bx;
128        $cy = 3*($p[3]-$p[1]);
129        $by = 3*($p[5]-$p[3])-$cy;
130        $ay = $p[7]-$p[1]-$cy-$by;
131
132        // Step size
133        $delta = 1.0/$aSteps;
134
135        $x_old = $x0;
136        $y_old = $y0;
137        for($t=$delta; $t<=1.0; $t+=$delta) {
138            $tt = $t*$t; $ttt=$tt*$t;
139            $x  = $ax*$ttt + $bx*$tt + $cx*$t + $x0;
140            $y = $ay*$ttt + $by*$tt + $cy*$t + $y0;
141            $this->Line($x_old,$y_old,$x,$y);
142            $x_old = $x;
143            $y_old = $y;
144        }
145        $this->Line($x_old,$y_old,$p[6],$p[7]);
146    }
147
148    function Rectangle($x1,$y1,$x2,$y2) {
149        list($x1,$y1) = $this->scale->Translate($x1,$y1);
150        list($x2,$y2)   = $this->scale->Translate($x2,$y2);
151        $this->img->Rectangle($x1,$y1,$x2,$y2);
152    }
153
154    function FilledRectangle($x1,$y1,$x2,$y2) {
155        list($x1,$y1) = $this->scale->Translate($x1,$y1);
156        list($x2,$y2)   = $this->scale->Translate($x2,$y2);
157        $this->img->FilledRectangle($x1,$y1,$x2,$y2);
158    }
159
160    function Circle($x1,$y1,$r) {
161        list($x1,$y1) = $this->scale->Translate($x1,$y1);
162        if( $r >= 0 )
163        $r   = $this->scale->TranslateX($r);
164        else
165        $r = -$r;
166        $this->img->Circle($x1,$y1,$r);
167    }
168
169    function FilledCircle($x1,$y1,$r) {
170        list($x1,$y1) = $this->scale->Translate($x1,$y1);
171        if( $r >= 0 )
172        $r   = $this->scale->TranslateX($r);
173        else
174        $r = -$r;
175        $this->img->FilledCircle($x1,$y1,$r);
176    }
177
178    function RoundedRectangle($x1,$y1,$x2,$y2,$r=null) {
179        list($x1,$y1) = $this->scale->Translate($x1,$y1);
180        list($x2,$y2)   = $this->scale->Translate($x2,$y2);
181
182        if( $r == null )
183        $r = 5;
184        elseif( $r >= 0 )
185        $r = $this->scale->TranslateX($r);
186        else
187        $r = -$r;
188        $this->img->RoundedRectangle($x1,$y1,$x2,$y2,$r);
189    }
190
191    function FilledRoundedRectangle($x1,$y1,$x2,$y2,$r=null) {
192        list($x1,$y1) = $this->scale->Translate($x1,$y1);
193        list($x2,$y2)   = $this->scale->Translate($x2,$y2);
194
195        if( $r == null )
196        $r = 5;
197        elseif( $r > 0 )
198        $r = $this->scale->TranslateX($r);
199        else
200        $r = -$r;
201        $this->img->FilledRoundedRectangle($x1,$y1,$x2,$y2,$r);
202    }
203
204    function ShadowRectangle($x1,$y1,$x2,$y2,$fcolor=false,$shadow_width=null,$shadow_color=array(102,102,102)) {
205        list($x1,$y1) = $this->scale->Translate($x1,$y1);
206        list($x2,$y2) = $this->scale->Translate($x2,$y2);
207        if( $shadow_width == null )
208        $shadow_width=4;
209        else
210        $shadow_width=$this->scale->TranslateX($shadow_width);
211        $this->img->ShadowRectangle($x1,$y1,$x2,$y2,$fcolor,$shadow_width,$shadow_color);
212    }
213
214    function SetTextAlign($halign,$valign="bottom") {
215        $this->img->SetTextAlign($halign,$valign="bottom");
216    }
217
218    function StrokeText($x1,$y1,$txt,$dir=0,$paragraph_align="left") {
219        list($x1,$y1) = $this->scale->Translate($x1,$y1);
220        $this->img->StrokeText($x1,$y1,$txt,$dir,$paragraph_align);
221    }
222
223    // A rounded rectangle where one of the corner has been moved "into" the
224    // rectangle 'iw' width and 'ih' height. Corners:
225    // 0=Top left, 1=top right, 2=bottom right, 3=bottom left
226    function IndentedRectangle($xt,$yt,$w,$h,$iw=0,$ih=0,$aCorner=3,$aFillColor="",$r=4) {
227
228        list($xt,$yt) = $this->scale->Translate($xt,$yt);
229        list($w,$h)   = $this->scale->Translate($w,$h);
230        list($iw,$ih) = $this->scale->Translate($iw,$ih);
231
232        $xr = $xt + $w - 0;
233        $yl = $yt + $h - 0;
234
235        switch( $aCorner ) {
236            case 0: // Upper left
237
238                // Bottom line, left &  right arc
239                $this->img->Line($xt+$r,$yl,$xr-$r,$yl);
240                $this->img->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
241                $this->img->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
242
243                // Right line, Top right arc
244                $this->img->Line($xr,$yt+$r,$xr,$yl-$r);
245                $this->img->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
246
247                // Top line, Top left arc
248                $this->img->Line($xt+$iw+$r,$yt,$xr-$r,$yt);
249                $this->img->Arc($xt+$iw+$r,$yt+$r,$r*2,$r*2,180,270);
250
251                // Left line
252                $this->img->Line($xt,$yt+$ih+$r,$xt,$yl-$r);
253
254                // Indent horizontal, Lower left arc
255                $this->img->Line($xt+$r,$yt+$ih,$xt+$iw-$r,$yt+$ih);
256                $this->img->Arc($xt+$r,$yt+$ih+$r,$r*2,$r*2,180,270);
257
258                // Indent vertical, Indent arc
259                $this->img->Line($xt+$iw,$yt+$r,$xt+$iw,$yt+$ih-$r);
260                $this->img->Arc($xt+$iw-$r,$yt+$ih-$r,$r*2,$r*2,0,90);
261
262                if( $aFillColor != '' ) {
263                    $bc = $this->img->current_color_name;
264                    $this->img->PushColor($aFillColor);
265                    $this->img->FillToBorder($xr-$r,$yl-$r,$bc);
266                    $this->img->PopColor();
267                }
268
269                break;
270
271            case 1: // Upper right
272
273                // Bottom line, left &  right arc
274                $this->img->Line($xt+$r,$yl,$xr-$r,$yl);
275                $this->img->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
276                $this->img->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
277
278                // Left line, Top left arc
279                $this->img->Line($xt,$yt+$r,$xt,$yl-$r);
280                $this->img->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
281
282                // Top line, Top right arc
283                $this->img->Line($xt+$r,$yt,$xr-$iw-$r,$yt);
284                $this->img->Arc($xr-$iw-$r,$yt+$r,$r*2,$r*2,270,360);
285
286                // Right line
287                $this->img->Line($xr,$yt+$ih+$r,$xr,$yl-$r);
288
289                // Indent horizontal, Lower right arc
290                $this->img->Line($xr-$iw+$r,$yt+$ih,$xr-$r,$yt+$ih);
291                $this->img->Arc($xr-$r,$yt+$ih+$r,$r*2,$r*2,270,360);
292
293                // Indent vertical, Indent arc
294                $this->img->Line($xr-$iw,$yt+$r,$xr-$iw,$yt+$ih-$r);
295                $this->img->Arc($xr-$iw+$r,$yt+$ih-$r,$r*2,$r*2,90,180);
296
297                if( $aFillColor != '' ) {
298                    $bc = $this->img->current_color_name;
299                    $this->img->PushColor($aFillColor);
300                    $this->img->FillToBorder($xt+$r,$yl-$r,$bc);
301                    $this->img->PopColor();
302                }
303
304                break;
305
306            case 2: // Lower right
307                // Top line, Top left & Top right arc
308                $this->img->Line($xt+$r,$yt,$xr-$r,$yt);
309                $this->img->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
310                $this->img->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
311
312                // Left line, Bottom left arc
313                $this->img->Line($xt,$yt+$r,$xt,$yl-$r);
314                $this->img->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
315
316                // Bottom line, Bottom right arc
317                $this->img->Line($xt+$r,$yl,$xr-$iw-$r,$yl);
318                $this->img->Arc($xr-$iw-$r,$yl-$r,$r*2,$r*2,0,90);
319
320                // Right line
321                $this->img->Line($xr,$yt+$r,$xr,$yl-$ih-$r);
322
323                // Indent horizontal, Lower right arc
324                $this->img->Line($xr-$r,$yl-$ih,$xr-$iw+$r,$yl-$ih);
325                $this->img->Arc($xr-$r,$yl-$ih-$r,$r*2,$r*2,0,90);
326
327                // Indent vertical, Indent arc
328                $this->img->Line($xr-$iw,$yl-$r,$xr-$iw,$yl-$ih+$r);
329                $this->img->Arc($xr-$iw+$r,$yl-$ih+$r,$r*2,$r*2,180,270);
330
331                if( $aFillColor != '' ) {
332                    $bc = $this->img->current_color_name;
333                    $this->img->PushColor($aFillColor);
334                    $this->img->FillToBorder($xt+$r,$yt+$r,$bc);
335                    $this->img->PopColor();
336                }
337
338                break;
339
340            case 3: // Lower left
341                // Top line, Top left & Top right arc
342                $this->img->Line($xt+$r,$yt,$xr-$r,$yt);
343                $this->img->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
344                $this->img->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
345
346                // Right line, Bottom right arc
347                $this->img->Line($xr,$yt+$r,$xr,$yl-$r);
348                $this->img->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
349
350                // Bottom line, Bottom left arc
351                $this->img->Line($xt+$iw+$r,$yl,$xr-$r,$yl);
352                $this->img->Arc($xt+$iw+$r,$yl-$r,$r*2,$r*2,90,180);
353
354                // Left line
355                $this->img->Line($xt,$yt+$r,$xt,$yl-$ih-$r);
356
357                // Indent horizontal, Lower left arc
358                $this->img->Line($xt+$r,$yl-$ih,$xt+$iw-$r,$yl-$ih);
359                $this->img->Arc($xt+$r,$yl-$ih-$r,$r*2,$r*2,90,180);
360
361                // Indent vertical, Indent arc
362                $this->img->Line($xt+$iw,$yl-$ih+$r,$xt+$iw,$yl-$r);
363                $this->img->Arc($xt+$iw-$r,$yl-$ih+$r,$r*2,$r*2,270,360);
364
365                if( $aFillColor != '' ) {
366                    $bc = $this->img->current_color_name;
367                    $this->img->PushColor($aFillColor);
368                    $this->img->FillToBorder($xr-$r,$yt+$r,$bc);
369                    $this->img->PopColor();
370                }
371
372                break;
373        }
374    }
375}
376
377
378//===================================================
379// CLASS RectangleText
380// Description: Draws a text paragraph inside a
381// rounded, possible filled, rectangle.
382//===================================================
383class CanvasRectangleText {
384    private $ix,$iy,$iw,$ih,$ir=4;
385    private $iTxt,$iColor='black',$iFillColor='',$iFontColor='black';
386    private $iParaAlign='center';
387    private $iAutoBoxMargin=5;
388    private $iShadowWidth=3,$iShadowColor='';
389
390    function __construct($aTxt='',$xl=0,$yt=0,$w=0,$h=0) {
391        $this->iTxt = new Text($aTxt);
392        $this->ix = $xl;
393        $this->iy = $yt;
394        $this->iw = $w;
395        $this->ih = $h;
396    }
397
398    function SetShadow($aColor='gray',$aWidth=3) {
399        $this->iShadowColor = $aColor;
400        $this->iShadowWidth = $aWidth;
401    }
402
403    function SetFont($FontFam,$aFontStyle,$aFontSize=12) {
404        $this->iTxt->SetFont($FontFam,$aFontStyle,$aFontSize);
405    }
406
407    function SetTxt($aTxt) {
408        $this->iTxt->Set($aTxt);
409    }
410
411    function ParagraphAlign($aParaAlign) {
412        $this->iParaAlign = $aParaAlign;
413    }
414
415    function SetFillColor($aFillColor) {
416        $this->iFillColor = $aFillColor;
417    }
418
419    function SetAutoMargin($aMargin) {
420        $this->iAutoBoxMargin=$aMargin;
421    }
422
423    function SetColor($aColor) {
424        $this->iColor = $aColor;
425    }
426
427    function SetFontColor($aColor) {
428        $this->iFontColor = $aColor;
429    }
430
431    function SetPos($xl=0,$yt=0,$w=0,$h=0) {
432        $this->ix = $xl;
433        $this->iy = $yt;
434        $this->iw = $w;
435        $this->ih = $h;
436    }
437
438    function Pos($xl=0,$yt=0,$w=0,$h=0) {
439        $this->ix = $xl;
440        $this->iy = $yt;
441        $this->iw = $w;
442        $this->ih = $h;
443    }
444
445    function Set($aTxt,$xl,$yt,$w=0,$h=0) {
446        $this->iTxt->Set($aTxt);
447        $this->ix = $xl;
448        $this->iy = $yt;
449        $this->iw = $w;
450        $this->ih = $h;
451    }
452
453    function SetCornerRadius($aRad=5) {
454        $this->ir = $aRad;
455    }
456
457    function Stroke($aImg,$scale) {
458
459        // If coordinates are specifed as negative this means we should
460        // treat them as abolsute (pixels) coordinates
461        if( $this->ix > 0 ) {
462            $this->ix = $scale->TranslateX($this->ix) ;
463        }
464        else {
465            $this->ix = -$this->ix;
466        }
467
468        if( $this->iy > 0 ) {
469            $this->iy = $scale->TranslateY($this->iy) ;
470        }
471        else {
472            $this->iy = -$this->iy;
473        }
474
475        list($this->iw,$this->ih) = $scale->Translate($this->iw,$this->ih) ;
476
477        if( $this->iw == 0 )
478        $this->iw = round($this->iTxt->GetWidth($aImg) + $this->iAutoBoxMargin);
479        if( $this->ih == 0 ) {
480            $this->ih = round($this->iTxt->GetTextHeight($aImg) + $this->iAutoBoxMargin);
481        }
482
483        if( $this->iShadowColor != '' ) {
484            $aImg->PushColor($this->iShadowColor);
485            $aImg->FilledRoundedRectangle($this->ix+$this->iShadowWidth,
486            $this->iy+$this->iShadowWidth,
487            $this->ix+$this->iw-1+$this->iShadowWidth,
488            $this->iy+$this->ih-1+$this->iShadowWidth,
489            $this->ir);
490            $aImg->PopColor();
491        }
492
493        if( $this->iFillColor != '' ) {
494            $aImg->PushColor($this->iFillColor);
495            $aImg->FilledRoundedRectangle($this->ix,$this->iy,
496            $this->ix+$this->iw-1,
497            $this->iy+$this->ih-1,
498            $this->ir);
499            $aImg->PopColor();
500        }
501
502        if( $this->iColor != '' ) {
503            $aImg->PushColor($this->iColor);
504            $aImg->RoundedRectangle($this->ix,$this->iy,
505            $this->ix+$this->iw-1,
506            $this->iy+$this->ih-1,
507            $this->ir);
508            $aImg->PopColor();
509        }
510
511        $this->iTxt->Align('center','center');
512        $this->iTxt->ParagraphAlign($this->iParaAlign);
513        $this->iTxt->SetColor($this->iFontColor);
514        $this->iTxt->Stroke($aImg, $this->ix+$this->iw/2, $this->iy+$this->ih/2);
515
516        return array($this->iw, $this->ih);
517
518    }
519
520}
521
522
523?>
524