[Sommaire] [Imprimer]

   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 781 2006-10-08 08:07:47Z ljp $
   7  //
   8  // Copyright (c) Aditus Consulting. All rights reserved.
   9  //========================================================================
  10  */
  11  
  12  DEFINE('CORNER_TOPLEFT',0);
  13  DEFINE('CORNER_TOPRIGHT',1);
  14  DEFINE('CORNER_BOTTOMRIGHT',2);
  15  DEFINE('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   
  24  class 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  //===================================================
  69  class 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  //===================================================
 375  class 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  ?>