<?php /*======================================================================= // File: JPGRAPH_CANVTOOLS.PHP // Description: Some utilities for text and shape drawing on a canvas // Created: 2002-08-23 // Author: Johan Persson (johanp@aditus.nu) // Ver: $Id: jpgraph_canvtools.php,v 1.1 2006/07/07 13:37:14 powles Exp $ // // Copyright (c) Aditus Consulting. All rights reserved. //======================================================================== */ DEFINE('CORNER_TOPLEFT',0); DEFINE('CORNER_TOPRIGHT',1); DEFINE('CORNER_BOTTOMRIGHT',2); DEFINE('CORNER_BOTTOMLEFT',3); //=================================================== // CLASS CanvasScale // Description: Define a scale for canvas so we // can abstract away with absolute pixels //=================================================== class CanvasScale { var $g; var $w,$h; var $ixmin=0,$ixmax=10,$iymin=0,$iymax=10; function CanvasScale(&$graph,$xmin=0,$xmax=10,$ymin=0,$ymax=10) { $this->g = &$graph; $this->w = $graph->img->width; $this->h = $graph->img->height; $this->ixmin = $xmin; $this->ixmax = $xmax; $this->iymin = $ymin; $this->iymax = $ymax; } function Set($xmin=0,$xmax=10,$ymin=0,$ymax=10) { $this->ixmin = $xmin; $this->ixmax = $xmax; $this->iymin = $ymin; $this->iymax = $ymax; } function Translate($x,$y) { $xp = round(($x-$this->ixmin)/($this->ixmax - $this->ixmin) * $this->w); $yp = round(($y-$this->iymin)/($this->iymax - $this->iymin) * $this->h); return array($xp,$yp); } function TranslateX($x) { $xp = round(($x-$this->ixmin)/($this->ixmax - $this->ixmin) * $this->w); return $xp; } function TranslateY($y) { $yp = round(($y-$this->iymin)/($this->iymax - $this->iymin) * $this->h); return $yp; } } //=================================================== // CLASS Shape // Description: Methods to draw shapes on canvas //=================================================== class Shape { var $img,$scale; function Shape(&$aGraph,&$scale) { $this->img = &$aGraph->img; $this->img->SetColor('black'); $this->scale = &$scale; } function SetColor($aColor) { $this->img->SetColor($aColor); } function Line($x1,$y1,$x2,$y2) { list($x1,$y1) = $this->scale->Translate($x1,$y1); list($x2,$y2) = $this->scale->Translate($x2,$y2); $this->img->Line($x1,$y1,$x2,$y2); } function Polygon($p,$aClosed=false) { $n=count($p); for($i=0; $i < $n; $i+=2 ) { $p[$i] = $this->scale->TranslateX($p[$i]); $p[$i+1] = $this->scale->TranslateY($p[$i+1]); } $this->img->Polygon($p,$aClosed); } function FilledPolygon($p) { $n=count($p); for($i=0; $i < $n; $i+=2 ) { $p[$i] = $this->scale->TranslateX($p[$i]); $p[$i+1] = $this->scale->TranslateY($p[$i+1]); } $this->img->FilledPolygon($p); } // Draw a bezier curve with defining points in the $aPnts array // using $aSteps steps. // 0=x0, 1=y0 // 2=x1, 3=y1 // 4=x2, 5=y2 // 6=x3, 7=y3 function Bezier($p,$aSteps=40) { $x0 = $p[0]; $y0 = $p[1]; // Calculate coefficients $cx = 3*($p[2]-$p[0]); $bx = 3*($p[4]-$p[2])-$cx; $ax = $p[6]-$p[0]-$cx-$bx; $cy = 3*($p[3]-$p[1]); $by = 3*($p[5]-$p[3])-$cy; $ay = $p[7]-$p[1]-$cy-$by; // Step size $delta = 1.0/$aSteps; $x_old = $x0; $y_old = $y0; for($t=$delta; $t<=1.0; $t+=$delta) { $tt = $t*$t; $ttt=$tt*$t; $x = $ax*$ttt + $bx*$tt + $cx*$t + $x0; $y = $ay*$ttt + $by*$tt + $cy*$t + $y0; $this->Line($x_old,$y_old,$x,$y); $x_old = $x; $y_old = $y; } $this->Line($x_old,$y_old,$p[6],$p[7]); } function Rectangle($x1,$y1,$x2,$y2) { list($x1,$y1) = $this->scale->Translate($x1,$y1); list($x2,$y2) = $this->scale->Translate($x2,$y2); $this->img->Rectangle($x1,$y1,$x2,$y2); } function FilledRectangle($x1,$y1,$x2,$y2) { list($x1,$y1) = $this->scale->Translate($x1,$y1); list($x2,$y2) = $this->scale->Translate($x2,$y2); $this->img->FilledRectangle($x1,$y1,$x2,$y2); } function Circle($x1,$y1,$r) { list($x1,$y1) = $this->scale->Translate($x1,$y1); if( $r >= 0 ) $r = $this->scale->TranslateX($r); else $r = -$r; $this->img->Circle($x1,$y1,$r); } function FilledCircle($x1,$y1,$r) { list($x1,$y1) = $this->scale->Translate($x1,$y1); if( $r >= 0 ) $r = $this->scale->TranslateX($r); else $r = -$r; $this->img->FilledCircle($x1,$y1,$r); } function RoundedRectangle($x1,$y1,$x2,$y2,$r=null) { list($x1,$y1) = $this->scale->Translate($x1,$y1); list($x2,$y2) = $this->scale->Translate($x2,$y2); if( $r == null ) $r = 5; elseif( $r >= 0 ) $r = $this->scale->TranslateX($r); else $r = -$r; $this->img->RoundedRectangle($x1,$y1,$x2,$y2,$r); } function FilledRoundedRectangle($x1,$y1,$x2,$y2,$r=null) { list($x1,$y1) = $this->scale->Translate($x1,$y1); list($x2,$y2) = $this->scale->Translate($x2,$y2); if( $r == null ) $r = 5; elseif( $r > 0 ) $r = $this->scale->TranslateX($r); else $r = -$r; $this->img->FilledRoundedRectangle($x1,$y1,$x2,$y2,$r); } function ShadowRectangle($x1,$y1,$x2,$y2,$fcolor=false,$shadow_width=null,$shadow_color=array(102,102,102)) { list($x1,$y1) = $this->scale->Translate($x1,$y1); list($x2,$y2) = $this->scale->Translate($x2,$y2); if( $shadow_width == null ) $shadow_width=4; else $shadow_width=$this->scale->TranslateX($shadow_width); $this->img->ShadowRectangle($x1,$y1,$x2,$y2,$fcolor,$shadow_width,$shadow_color); } function SetTextAlign($halign,$valign="bottom") { $this->img->SetTextAlign($halign,$valign="bottom"); } function StrokeText($x1,$y1,$txt,$dir=0,$paragraph_align="left") { list($x1,$y1) = $this->scale->Translate($x1,$y1); $this->img->StrokeText($x1,$y1,$txt,$dir,$paragraph_align); } // A rounded rectangle where one of the corner has been moved "into" the // rectangle 'iw' width and 'ih' height. Corners: // 0=Top left, 1=top right, 2=bottom right, 3=bottom left function IndentedRectangle($xt,$yt,$w,$h,$iw=0,$ih=0,$aCorner=3,$aFillColor="",$r=4) { list($xt,$yt) = $this->scale->Translate($xt,$yt); list($w,$h) = $this->scale->Translate($w,$h); list($iw,$ih) = $this->scale->Translate($iw,$ih); $xr = $xt + $w - 0; $yl = $yt + $h - 0; switch( $aCorner ) { case 0: // Upper left // Bottom line, left & right arc $this->img->Line($xt+$r,$yl,$xr-$r,$yl); $this->img->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180); $this->img->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90); // Right line, Top right arc $this->img->Line($xr,$yt+$r,$xr,$yl-$r); $this->img->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360); // Top line, Top left arc $this->img->Line($xt+$iw+$r,$yt,$xr-$r,$yt); $this->img->Arc($xt+$iw+$r,$yt+$r,$r*2,$r*2,180,270); // Left line $this->img->Line($xt,$yt+$ih+$r,$xt,$yl-$r); // Indent horizontal, Lower left arc $this->img->Line($xt+$r,$yt+$ih,$xt+$iw-$r,$yt+$ih); $this->img->Arc($xt+$r,$yt+$ih+$r,$r*2,$r*2,180,270); // Indent vertical, Indent arc $this->img->Line($xt+$iw,$yt+$r,$xt+$iw,$yt+$ih-$r); $this->img->Arc($xt+$iw-$r,$yt+$ih-$r,$r*2,$r*2,0,90); if( $aFillColor != '' ) { $bc = $this->img->current_color_name; $this->img->PushColor($aFillColor); $this->img->FillToBorder($xr-$r,$yl-$r,$bc); $this->img->PopColor(); } break; case 1: // Upper right // Bottom line, left & right arc $this->img->Line($xt+$r,$yl,$xr-$r,$yl); $this->img->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180); $this->img->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90); // Left line, Top left arc $this->img->Line($xt,$yt+$r,$xt,$yl-$r); $this->img->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270); // Top line, Top right arc $this->img->Line($xt+$r,$yt,$xr-$iw-$r,$yt); $this->img->Arc($xr-$iw-$r,$yt+$r,$r*2,$r*2,270,360); // Right line $this->img->Line($xr,$yt+$ih+$r,$xr,$yl-$r); // Indent horizontal, Lower right arc $this->img->Line($xr-$iw+$r,$yt+$ih,$xr-$r,$yt+$ih); $this->img->Arc($xr-$r,$yt+$ih+$r,$r*2,$r*2,270,360); // Indent vertical, Indent arc $this->img->Line($xr-$iw,$yt+$r,$xr-$iw,$yt+$ih-$r); $this->img->Arc($xr-$iw+$r,$yt+$ih-$r,$r*2,$r*2,90,180); if( $aFillColor != '' ) { $bc = $this->img->current_color_name; $this->img->PushColor($aFillColor); $this->img->FillToBorder($xt+$r,$yl-$r,$bc); $this->img->PopColor(); } break; case 2: // Lower right // Top line, Top left & Top right arc $this->img->Line($xt+$r,$yt,$xr-$r,$yt); $this->img->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270); $this->img->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360); // Left line, Bottom left arc $this->img->Line($xt,$yt+$r,$xt,$yl-$r); $this->img->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180); // Bottom line, Bottom right arc $this->img->Line($xt+$r,$yl,$xr-$iw-$r,$yl); $this->img->Arc($xr-$iw-$r,$yl-$r,$r*2,$r*2,0,90); // Right line $this->img->Line($xr,$yt+$r,$xr,$yl-$ih-$r); // Indent horizontal, Lower right arc $this->img->Line($xr-$r,$yl-$ih,$xr-$iw+$r,$yl-$ih); $this->img->Arc($xr-$r,$yl-$ih-$r,$r*2,$r*2,0,90); // Indent vertical, Indent arc $this->img->Line($xr-$iw,$yl-$r,$xr-$iw,$yl-$ih+$r); $this->img->Arc($xr-$iw+$r,$yl-$ih+$r,$r*2,$r*2,180,270); if( $aFillColor != '' ) { $bc = $this->img->current_color_name; $this->img->PushColor($aFillColor); $this->img->FillToBorder($xt+$r,$yt+$r,$bc); $this->img->PopColor(); } break; case 3: // Lower left // Top line, Top left & Top right arc $this->img->Line($xt+$r,$yt,$xr-$r,$yt); $this->img->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270); $this->img->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360); // Right line, Bottom right arc $this->img->Line($xr,$yt+$r,$xr,$yl-$r); $this->img->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90); // Bottom line, Bottom left arc $this->img->Line($xt+$iw+$r,$yl,$xr-$r,$yl); $this->img->Arc($xt+$iw+$r,$yl-$r,$r*2,$r*2,90,180); // Left line $this->img->Line($xt,$yt+$r,$xt,$yl-$ih-$r); // Indent horizontal, Lower left arc $this->img->Line($xt+$r,$yl-$ih,$xt+$iw-$r,$yl-$ih); $this->img->Arc($xt+$r,$yl-$ih-$r,$r*2,$r*2,90,180); // Indent vertical, Indent arc $this->img->Line($xt+$iw,$yl-$ih+$r,$xt+$iw,$yl-$r); $this->img->Arc($xt+$iw-$r,$yl-$ih+$r,$r*2,$r*2,270,360); if( $aFillColor != '' ) { $bc = $this->img->current_color_name; $this->img->PushColor($aFillColor); $this->img->FillToBorder($xr-$r,$yt+$r,$bc); $this->img->PopColor(); } break; } } } //=================================================== // CLASS RectangleText // Description: Draws a text paragraph inside a // rounded, possible filled, rectangle. //=================================================== class CanvasRectangleText { var $ix,$iy,$iw,$ih,$ir=4; var $iTxt,$iColor='black',$iFillColor='',$iFontColor='black'; var $iParaAlign='center'; var $iAutoBoxMargin=5; var $iShadowWidth=3,$iShadowColor=''; function CanvasRectangleText($aTxt='',$xl=0,$yt=0,$w=0,$h=0) { $this->iTxt = new Text($aTxt); $this->ix = $xl; $this->iy = $yt; $this->iw = $w; $this->ih = $h; } function SetShadow($aColor='gray',$aWidth=3) { $this->iShadowColor = $aColor; $this->iShadowWidth = $aWidth; } function SetFont($FontFam,$aFontStyle,$aFontSize=12) { $this->iTxt->SetFont($FontFam,$aFontStyle,$aFontSize); } function SetTxt($aTxt) { $this->iTxt->Set($aTxt); } function ParagraphAlign($aParaAlign) { $this->iParaAlign = $aParaAlign; } function SetFillColor($aFillColor) { $this->iFillColor = $aFillColor; } function SetAutoMargin($aMargin) { $this->iAutoBoxMargin=$aMargin; } function SetColor($aColor) { $this->iColor = $aColor; } function SetFontColor($aColor) { $this->iFontColor = $aColor; } function SetPos($xl=0,$yt=0,$w=0,$h=0) { $this->ix = $xl; $this->iy = $yt; $this->iw = $w; $this->ih = $h; } function Pos($xl=0,$yt=0,$w=0,$h=0) { $this->ix = $xl; $this->iy = $yt; $this->iw = $w; $this->ih = $h; } function Set($aTxt,$xl,$yt,$w=0,$h=0) { $this->iTxt->Set($aTxt); $this->ix = $xl; $this->iy = $yt; $this->iw = $w; $this->ih = $h; } function SetCornerRadius($aRad=5) { $this->ir = $aRad; } function Stroke($aImg,$scale) { // If coordinates are specifed as negative this means we should // treat them as abolsute (pixels) coordinates if( $this->ix > 0 ) { $this->ix = $scale->TranslateX($this->ix) ; } else { $this->ix = -$this->ix; } if( $this->iy > 0 ) { $this->iy = $scale->TranslateY($this->iy) ; } else { $this->iy = -$this->iy; } list($this->iw,$this->ih) = $scale->Translate($this->iw,$this->ih) ; if( $this->iw == 0 ) $this->iw = round($this->iTxt->GetWidth($aImg) + $this->iAutoBoxMargin); if( $this->ih == 0 ) { $this->ih = round($this->iTxt->GetTextHeight($aImg) + $this->iAutoBoxMargin); } if( $this->iShadowColor != '' ) { $aImg->PushColor($this->iShadowColor); $aImg->FilledRoundedRectangle($this->ix+$this->iShadowWidth, $this->iy+$this->iShadowWidth, $this->ix+$this->iw-1+$this->iShadowWidth, $this->iy+$this->ih-1+$this->iShadowWidth, $this->ir); $aImg->PopColor(); } if( $this->iFillColor != '' ) { $aImg->PushColor($this->iFillColor); $aImg->FilledRoundedRectangle($this->ix,$this->iy, $this->ix+$this->iw-1, $this->iy+$this->ih-1, $this->ir); $aImg->PopColor(); } if( $this->iColor != '' ) { $aImg->PushColor($this->iColor); $aImg->RoundedRectangle($this->ix,$this->iy, $this->ix+$this->iw-1, $this->iy+$this->ih-1, $this->ir); $aImg->PopColor(); } $this->iTxt->Align('center','center'); $this->iTxt->ParagraphAlign($this->iParaAlign); $this->iTxt->SetColor($this->iFontColor); $this->iTxt->Stroke($aImg, $this->ix+$this->iw/2, $this->iy+$this->ih/2); return array($this->iw, $this->ih); } } ?>