source: trunk/client/modules/Elezioni/grafici/jpgraph_canvtools.php@ 73

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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 1091 2009-01-18 22:57:40Z ljp $
7//
8// Copyright (c) Aditus Consulting. 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 CanvasScale($graph,$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 = $ymax;
44 }
45
46 function Translate($x,$y) {
47 $xp = round(($x-$this->ixmin)/($this->ixmax - $this->ixmin) * $this->w);
48 $yp = round(($y-$this->iymin)/($this->iymax - $this->iymin) * $this->h);
49 return array($xp,$yp);
50 }
51
52 function TranslateX($x) {
53 $xp = round(($x-$this->ixmin)/($this->ixmax - $this->ixmin) * $this->w);
54 return $xp;
55 }
56
57 function TranslateY($y) {
58 $yp = round(($y-$this->iymin)/($this->iymax - $this->iymin) * $this->h);
59 return $yp;
60 }
61
62}
63
64
65//===================================================
66// CLASS Shape
67// Description: Methods to draw shapes on canvas
68//===================================================
69class Shape {
70 private $img,$scale;
71
72 function Shape($aGraph,$scale) {
73 $this->img = $aGraph->img;
74 $this->img->SetColor('black');
75 $this->scale = $scale;
76 }
77
78 function SetColor($aColor) {
79 $this->img->SetColor($aColor);
80 }
81
82 function Line($x1,$y1,$x2,$y2) {
83 list($x1,$y1) = $this->scale->Translate($x1,$y1);
84 list($x2,$y2) = $this->scale->Translate($x2,$y2);
85 $this->img->Line($x1,$y1,$x2,$y2);
86 }
87
88 function Polygon($p,$aClosed=false) {
89 $n=count($p);
90 for($i=0; $i < $n; $i+=2 ) {
91 $p[$i] = $this->scale->TranslateX($p[$i]);
92 $p[$i+1] = $this->scale->TranslateY($p[$i+1]);
93 }
94 $this->img->Polygon($p,$aClosed);
95 }
96
97 function FilledPolygon($p) {
98 $n=count($p);
99 for($i=0; $i < $n; $i+=2 ) {
100 $p[$i] = $this->scale->TranslateX($p[$i]);
101 $p[$i+1] = $this->scale->TranslateY($p[$i+1]);
102 }
103 $this->img->FilledPolygon($p);
104 }
105
106
107 // Draw a bezier curve with defining points in the $aPnts array
108 // using $aSteps steps.
109 // 0=x0, 1=y0
110 // 2=x1, 3=y1
111 // 4=x2, 5=y2
112 // 6=x3, 7=y3
113 function Bezier($p,$aSteps=40) {
114 $x0 = $p[0];
115 $y0 = $p[1];
116 // Calculate coefficients
117 $cx = 3*($p[2]-$p[0]);
118 $bx = 3*($p[4]-$p[2])-$cx;
119 $ax = $p[6]-$p[0]-$cx-$bx;
120 $cy = 3*($p[3]-$p[1]);
121 $by = 3*($p[5]-$p[3])-$cy;
122 $ay = $p[7]-$p[1]-$cy-$by;
123
124 // Step size
125 $delta = 1.0/$aSteps;
126
127 $x_old = $x0;
128 $y_old = $y0;
129 for($t=$delta; $t<=1.0; $t+=$delta) {
130 $tt = $t*$t; $ttt=$tt*$t;
131 $x = $ax*$ttt + $bx*$tt + $cx*$t + $x0;
132 $y = $ay*$ttt + $by*$tt + $cy*$t + $y0;
133 $this->Line($x_old,$y_old,$x,$y);
134 $x_old = $x;
135 $y_old = $y;
136 }
137 $this->Line($x_old,$y_old,$p[6],$p[7]);
138 }
139
140 function Rectangle($x1,$y1,$x2,$y2) {
141 list($x1,$y1) = $this->scale->Translate($x1,$y1);
142 list($x2,$y2) = $this->scale->Translate($x2,$y2);
143 $this->img->Rectangle($x1,$y1,$x2,$y2);
144 }
145
146 function FilledRectangle($x1,$y1,$x2,$y2) {
147 list($x1,$y1) = $this->scale->Translate($x1,$y1);
148 list($x2,$y2) = $this->scale->Translate($x2,$y2);
149 $this->img->FilledRectangle($x1,$y1,$x2,$y2);
150 }
151
152 function Circle($x1,$y1,$r) {
153 list($x1,$y1) = $this->scale->Translate($x1,$y1);
154 if( $r >= 0 )
155 $r = $this->scale->TranslateX($r);
156 else
157 $r = -$r;
158 $this->img->Circle($x1,$y1,$r);
159 }
160
161 function FilledCircle($x1,$y1,$r) {
162 list($x1,$y1) = $this->scale->Translate($x1,$y1);
163 if( $r >= 0 )
164 $r = $this->scale->TranslateX($r);
165 else
166 $r = -$r;
167 $this->img->FilledCircle($x1,$y1,$r);
168 }
169
170 function RoundedRectangle($x1,$y1,$x2,$y2,$r=null) {
171 list($x1,$y1) = $this->scale->Translate($x1,$y1);
172 list($x2,$y2) = $this->scale->Translate($x2,$y2);
173
174 if( $r == null )
175 $r = 5;
176 elseif( $r >= 0 )
177 $r = $this->scale->TranslateX($r);
178 else
179 $r = -$r;
180 $this->img->RoundedRectangle($x1,$y1,$x2,$y2,$r);
181 }
182
183 function FilledRoundedRectangle($x1,$y1,$x2,$y2,$r=null) {
184 list($x1,$y1) = $this->scale->Translate($x1,$y1);
185 list($x2,$y2) = $this->scale->Translate($x2,$y2);
186
187 if( $r == null )
188 $r = 5;
189 elseif( $r > 0 )
190 $r = $this->scale->TranslateX($r);
191 else
192 $r = -$r;
193 $this->img->FilledRoundedRectangle($x1,$y1,$x2,$y2,$r);
194 }
195
196 function ShadowRectangle($x1,$y1,$x2,$y2,$fcolor=false,$shadow_width=null,$shadow_color=array(102,102,102)) {
197 list($x1,$y1) = $this->scale->Translate($x1,$y1);
198 list($x2,$y2) = $this->scale->Translate($x2,$y2);
199 if( $shadow_width == null )
200 $shadow_width=4;
201 else
202 $shadow_width=$this->scale->TranslateX($shadow_width);
203 $this->img->ShadowRectangle($x1,$y1,$x2,$y2,$fcolor,$shadow_width,$shadow_color);
204 }
205
206 function SetTextAlign($halign,$valign="bottom") {
207 $this->img->SetTextAlign($halign,$valign="bottom");
208 }
209
210 function StrokeText($x1,$y1,$txt,$dir=0,$paragraph_align="left") {
211 list($x1,$y1) = $this->scale->Translate($x1,$y1);
212 $this->img->StrokeText($x1,$y1,$txt,$dir,$paragraph_align);
213 }
214
215 // A rounded rectangle where one of the corner has been moved "into" the
216 // rectangle 'iw' width and 'ih' height. Corners:
217 // 0=Top left, 1=top right, 2=bottom right, 3=bottom left
218 function IndentedRectangle($xt,$yt,$w,$h,$iw=0,$ih=0,$aCorner=3,$aFillColor="",$r=4) {
219
220 list($xt,$yt) = $this->scale->Translate($xt,$yt);
221 list($w,$h) = $this->scale->Translate($w,$h);
222 list($iw,$ih) = $this->scale->Translate($iw,$ih);
223
224 $xr = $xt + $w - 0;
225 $yl = $yt + $h - 0;
226
227 switch( $aCorner ) {
228 case 0: // Upper left
229
230 // Bottom line, left & right arc
231 $this->img->Line($xt+$r,$yl,$xr-$r,$yl);
232 $this->img->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
233 $this->img->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
234
235 // Right line, Top right arc
236 $this->img->Line($xr,$yt+$r,$xr,$yl-$r);
237 $this->img->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
238
239 // Top line, Top left arc
240 $this->img->Line($xt+$iw+$r,$yt,$xr-$r,$yt);
241 $this->img->Arc($xt+$iw+$r,$yt+$r,$r*2,$r*2,180,270);
242
243 // Left line
244 $this->img->Line($xt,$yt+$ih+$r,$xt,$yl-$r);
245
246 // Indent horizontal, Lower left arc
247 $this->img->Line($xt+$r,$yt+$ih,$xt+$iw-$r,$yt+$ih);
248 $this->img->Arc($xt+$r,$yt+$ih+$r,$r*2,$r*2,180,270);
249
250 // Indent vertical, Indent arc
251 $this->img->Line($xt+$iw,$yt+$r,$xt+$iw,$yt+$ih-$r);
252 $this->img->Arc($xt+$iw-$r,$yt+$ih-$r,$r*2,$r*2,0,90);
253
254 if( $aFillColor != '' ) {
255 $bc = $this->img->current_color_name;
256 $this->img->PushColor($aFillColor);
257 $this->img->FillToBorder($xr-$r,$yl-$r,$bc);
258 $this->img->PopColor();
259 }
260
261 break;
262
263 case 1: // Upper right
264
265 // Bottom line, left & right arc
266 $this->img->Line($xt+$r,$yl,$xr-$r,$yl);
267 $this->img->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
268 $this->img->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
269
270 // Left line, Top left arc
271 $this->img->Line($xt,$yt+$r,$xt,$yl-$r);
272 $this->img->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
273
274 // Top line, Top right arc
275 $this->img->Line($xt+$r,$yt,$xr-$iw-$r,$yt);
276 $this->img->Arc($xr-$iw-$r,$yt+$r,$r*2,$r*2,270,360);
277
278 // Right line
279 $this->img->Line($xr,$yt+$ih+$r,$xr,$yl-$r);
280
281 // Indent horizontal, Lower right arc
282 $this->img->Line($xr-$iw+$r,$yt+$ih,$xr-$r,$yt+$ih);
283 $this->img->Arc($xr-$r,$yt+$ih+$r,$r*2,$r*2,270,360);
284
285 // Indent vertical, Indent arc
286 $this->img->Line($xr-$iw,$yt+$r,$xr-$iw,$yt+$ih-$r);
287 $this->img->Arc($xr-$iw+$r,$yt+$ih-$r,$r*2,$r*2,90,180);
288
289 if( $aFillColor != '' ) {
290 $bc = $this->img->current_color_name;
291 $this->img->PushColor($aFillColor);
292 $this->img->FillToBorder($xt+$r,$yl-$r,$bc);
293 $this->img->PopColor();
294 }
295
296 break;
297
298 case 2: // Lower right
299 // Top line, Top left & Top right arc
300 $this->img->Line($xt+$r,$yt,$xr-$r,$yt);
301 $this->img->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
302 $this->img->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
303
304 // Left line, Bottom left arc
305 $this->img->Line($xt,$yt+$r,$xt,$yl-$r);
306 $this->img->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
307
308 // Bottom line, Bottom right arc
309 $this->img->Line($xt+$r,$yl,$xr-$iw-$r,$yl);
310 $this->img->Arc($xr-$iw-$r,$yl-$r,$r*2,$r*2,0,90);
311
312 // Right line
313 $this->img->Line($xr,$yt+$r,$xr,$yl-$ih-$r);
314
315 // Indent horizontal, Lower right arc
316 $this->img->Line($xr-$r,$yl-$ih,$xr-$iw+$r,$yl-$ih);
317 $this->img->Arc($xr-$r,$yl-$ih-$r,$r*2,$r*2,0,90);
318
319 // Indent vertical, Indent arc
320 $this->img->Line($xr-$iw,$yl-$r,$xr-$iw,$yl-$ih+$r);
321 $this->img->Arc($xr-$iw+$r,$yl-$ih+$r,$r*2,$r*2,180,270);
322
323 if( $aFillColor != '' ) {
324 $bc = $this->img->current_color_name;
325 $this->img->PushColor($aFillColor);
326 $this->img->FillToBorder($xt+$r,$yt+$r,$bc);
327 $this->img->PopColor();
328 }
329
330 break;
331
332 case 3: // Lower left
333 // Top line, Top left & Top right arc
334 $this->img->Line($xt+$r,$yt,$xr-$r,$yt);
335 $this->img->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
336 $this->img->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
337
338 // Right line, Bottom right arc
339 $this->img->Line($xr,$yt+$r,$xr,$yl-$r);
340 $this->img->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
341
342 // Bottom line, Bottom left arc
343 $this->img->Line($xt+$iw+$r,$yl,$xr-$r,$yl);
344 $this->img->Arc($xt+$iw+$r,$yl-$r,$r*2,$r*2,90,180);
345
346 // Left line
347 $this->img->Line($xt,$yt+$r,$xt,$yl-$ih-$r);
348
349 // Indent horizontal, Lower left arc
350 $this->img->Line($xt+$r,$yl-$ih,$xt+$iw-$r,$yl-$ih);
351 $this->img->Arc($xt+$r,$yl-$ih-$r,$r*2,$r*2,90,180);
352
353 // Indent vertical, Indent arc
354 $this->img->Line($xt+$iw,$yl-$ih+$r,$xt+$iw,$yl-$r);
355 $this->img->Arc($xt+$iw-$r,$yl-$ih+$r,$r*2,$r*2,270,360);
356
357 if( $aFillColor != '' ) {
358 $bc = $this->img->current_color_name;
359 $this->img->PushColor($aFillColor);
360 $this->img->FillToBorder($xr-$r,$yt+$r,$bc);
361 $this->img->PopColor();
362 }
363
364 break;
365 }
366 }
367}
368
369
370//===================================================
371// CLASS RectangleText
372// Description: Draws a text paragraph inside a
373// rounded, possible filled, rectangle.
374//===================================================
375class CanvasRectangleText {
376 private $ix,$iy,$iw,$ih,$ir=4;
377 private $iTxt,$iColor='black',$iFillColor='',$iFontColor='black';
378 private $iParaAlign='center';
379 private $iAutoBoxMargin=5;
380 private $iShadowWidth=3,$iShadowColor='';
381
382 function CanvasRectangleText($aTxt='',$xl=0,$yt=0,$w=0,$h=0) {
383 $this->iTxt = new Text($aTxt);
384 $this->ix = $xl;
385 $this->iy = $yt;
386 $this->iw = $w;
387 $this->ih = $h;
388 }
389
390 function SetShadow($aColor='gray',$aWidth=3) {
391 $this->iShadowColor = $aColor;
392 $this->iShadowWidth = $aWidth;
393 }
394
395 function SetFont($FontFam,$aFontStyle,$aFontSize=12) {
396 $this->iTxt->SetFont($FontFam,$aFontStyle,$aFontSize);
397 }
398
399 function SetTxt($aTxt) {
400 $this->iTxt->Set($aTxt);
401 }
402
403 function ParagraphAlign($aParaAlign) {
404 $this->iParaAlign = $aParaAlign;
405 }
406
407 function SetFillColor($aFillColor) {
408 $this->iFillColor = $aFillColor;
409 }
410
411 function SetAutoMargin($aMargin) {
412 $this->iAutoBoxMargin=$aMargin;
413 }
414
415 function SetColor($aColor) {
416 $this->iColor = $aColor;
417 }
418
419 function SetFontColor($aColor) {
420 $this->iFontColor = $aColor;
421 }
422
423 function SetPos($xl=0,$yt=0,$w=0,$h=0) {
424 $this->ix = $xl;
425 $this->iy = $yt;
426 $this->iw = $w;
427 $this->ih = $h;
428 }
429
430 function Pos($xl=0,$yt=0,$w=0,$h=0) {
431 $this->ix = $xl;
432 $this->iy = $yt;
433 $this->iw = $w;
434 $this->ih = $h;
435 }
436
437 function Set($aTxt,$xl,$yt,$w=0,$h=0) {
438 $this->iTxt->Set($aTxt);
439 $this->ix = $xl;
440 $this->iy = $yt;
441 $this->iw = $w;
442 $this->ih = $h;
443 }
444
445 function SetCornerRadius($aRad=5) {
446 $this->ir = $aRad;
447 }
448
449 function Stroke($aImg,$scale) {
450
451 // If coordinates are specifed as negative this means we should
452 // treat them as abolsute (pixels) coordinates
453 if( $this->ix > 0 ) {
454 $this->ix = $scale->TranslateX($this->ix) ;
455 }
456 else {
457 $this->ix = -$this->ix;
458 }
459
460 if( $this->iy > 0 ) {
461 $this->iy = $scale->TranslateY($this->iy) ;
462 }
463 else {
464 $this->iy = -$this->iy;
465 }
466
467 list($this->iw,$this->ih) = $scale->Translate($this->iw,$this->ih) ;
468
469 if( $this->iw == 0 )
470 $this->iw = round($this->iTxt->GetWidth($aImg) + $this->iAutoBoxMargin);
471 if( $this->ih == 0 ) {
472 $this->ih = round($this->iTxt->GetTextHeight($aImg) + $this->iAutoBoxMargin);
473 }
474
475 if( $this->iShadowColor != '' ) {
476 $aImg->PushColor($this->iShadowColor);
477 $aImg->FilledRoundedRectangle($this->ix+$this->iShadowWidth,
478 $this->iy+$this->iShadowWidth,
479 $this->ix+$this->iw-1+$this->iShadowWidth,
480 $this->iy+$this->ih-1+$this->iShadowWidth,
481 $this->ir);
482 $aImg->PopColor();
483 }
484
485 if( $this->iFillColor != '' ) {
486 $aImg->PushColor($this->iFillColor);
487 $aImg->FilledRoundedRectangle($this->ix,$this->iy,
488 $this->ix+$this->iw-1,
489 $this->iy+$this->ih-1,
490 $this->ir);
491 $aImg->PopColor();
492 }
493
494 if( $this->iColor != '' ) {
495 $aImg->PushColor($this->iColor);
496 $aImg->RoundedRectangle($this->ix,$this->iy,
497 $this->ix+$this->iw-1,
498 $this->iy+$this->ih-1,
499 $this->ir);
500 $aImg->PopColor();
501 }
502
503 $this->iTxt->Align('center','center');
504 $this->iTxt->ParagraphAlign($this->iParaAlign);
505 $this->iTxt->SetColor($this->iFontColor);
506 $this->iTxt->Stroke($aImg, $this->ix+$this->iw/2, $this->iy+$this->ih/2);
507
508 return array($this->iw, $this->ih);
509
510 }
511
512}
513
514
515?>
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