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<?php
/*=======================================================================
// File: JPGRAPH_MGRAPH.PHP
// Description: Class to handle multiple graphs in the same image
// Created: 2006-01-15
// Ver: $Id: jpgraph_mgraph.php 1770 2009-08-17 06:10:22Z ljp $
//
// Copyright (c) Aditus Consulting. All rights reserved.
//========================================================================
*/
//=============================================================================
// CLASS MGraph
// Description: Create a container image that can hold several graph
//=============================================================================
class MGraph {
public $title = null, $subtitle = null, $subsubtitle = null;
protected $img=NULL;
protected $iCnt=0,$iGraphs = array(); // image_handle, x, y, fx, fy, sizex, sizey
protected $iFillColor='white', $iCurrentColor=0;
protected $lm=4,$rm=4,$tm=4,$bm=4;
protected $iDoFrame = FALSE, $iFrameColor = 'black', $iFrameWeight = 1;
protected $iLineWeight = 1;
protected $expired=false;
protected $cache=null,$cache_name = '',$inline=true;
protected $image_format='png',$image_quality=75;
protected $iWidth=NULL,$iHeight=NULL;
protected $background_image='',$background_image_center=true,
$backround_image_format='',$background_image_mix=100,
$background_image_y=NULL, $background_image_x=NULL;
private $doshadow=false, $shadow_width=4, $shadow_color='gray@0.5';
public $footer;
// Create a new instane of the combined graph
function __construct($aWidth=NULL,$aHeight=NULL,$aCachedName='',$aTimeOut=0,$aInline=true) {
$this->iWidth = $aWidth;
$this->iHeight = $aHeight;
// If the cached version exist just read it directly from the
// cache, stream it back to browser and exit
if( $aCachedName!='' && READ_CACHE && $aInline ) {
$this->cache = new ImgStreamCache();
$this->cache->SetTimeOut($aTimeOut);
$image = new Image();
if( $this->cache->GetAndStream($image,$aCachedName) ) {
exit();
}
}
$this->inline = $aInline;
$this->cache_name = $aCachedName;
$this->title = new Text();
$this->title->ParagraphAlign('center');
$this->title->SetFont(FF_FONT2,FS_BOLD);
$this->title->SetMargin(3);
$this->title->SetAlign('center');
$this->subtitle = new Text();
$this->subtitle->ParagraphAlign('center');
$this->subtitle->SetFont(FF_FONT1,FS_BOLD);
$this->subtitle->SetMargin(3);
$this->subtitle->SetAlign('center');
$this->subsubtitle = new Text();
$this->subsubtitle->ParagraphAlign('center');
$this->subsubtitle->SetFont(FF_FONT1,FS_NORMAL);
$this->subsubtitle->SetMargin(3);
$this->subsubtitle->SetAlign('center');
$this->footer = new Footer();
}
// Specify background fill color for the combined graph
function SetFillColor($aColor) {
$this->iFillColor = $aColor;
}
// Add a frame around the combined graph
function SetFrame($aFlg,$aColor='black',$aWeight=1) {
$this->iDoFrame = $aFlg;
$this->iFrameColor = $aColor;
$this->iFrameWeight = $aWeight;
}
// Specify a background image blend
function SetBackgroundImageMix($aMix) {
$this->background_image_mix = $aMix ;
}
// Specify a background image
function SetBackgroundImage($aFileName,$aCenter_aX=NULL,$aY=NULL) {
// Second argument can be either a boolean value or
// a numeric
$aCenter=TRUE;
$aX=NULL;
if( is_numeric($aCenter_aX) ) {
$aX=$aCenter_aX;
}
// Get extension to determine image type
$e = explode('.',$aFileName);
if( !$e ) {
JpGraphError::RaiseL(12002,$aFileName);
//('Incorrect file name for MGraph::SetBackgroundImage() : '.$aFileName.' Must have a valid image extension (jpg,gif,png) when using autodetection of image type');
}
$valid_formats = array('png', 'jpg', 'gif');
$aImgFormat = strtolower($e[count($e)-1]);
if ($aImgFormat == 'jpeg') {
$aImgFormat = 'jpg';
}
elseif (!in_array($aImgFormat, $valid_formats) ) {
JpGraphError::RaiseL(12003,$aImgFormat,$aFileName);
//('Unknown file extension ($aImgFormat) in MGraph::SetBackgroundImage() for filename: '.$aFileName);
}
$this->background_image = $aFileName;
$this->background_image_center=$aCenter;
$this->background_image_format=$aImgFormat;
$this->background_image_x = $aX;
$this->background_image_y = $aY;
}
function _strokeBackgroundImage() {
if( $this->background_image == '' ) return;
$bkgimg = Graph::LoadBkgImage('',$this->background_image);
// Background width & Heoght
$bw = imagesx($bkgimg);
$bh = imagesy($bkgimg);
// Canvas width and height
$cw = imagesx($this->img);
$ch = imagesy($this->img);
if( $this->doshadow ) {
$cw -= $this->shadow_width;
$ch -= $this->shadow_width;
}
if( $this->background_image_x === NULL || $this->background_image_y === NULL ) {
if( $this->background_image_center ) {
// Center original image in the plot area
$x = round($cw/2-$bw/2); $y = round($ch/2-$bh/2);
}
else {
// Just copy the image from left corner, no resizing
$x=0; $y=0;
}
}
else {
$x = $this->background_image_x;
$y = $this->background_image_y;
}
imagecopymerge($this->img,$bkgimg,$x,$y,0,0,$bw,$bh,$this->background_image_mix);
}
function AddMix($aGraph,$x=0,$y=0,$mix=100,$fx=0,$fy=0,$w=0,$h=0) {
$this->_gdImgHandle($aGraph->Stroke( _IMG_HANDLER),$x,$y,$fx=0,$fy=0,$w,$h,$mix);
}
function Add($aGraph,$x=0,$y=0,$fx=0,$fy=0,$w=0,$h=0) {
$this->_gdImgHandle($aGraph->Stroke( _IMG_HANDLER),$x,$y,$fx=0,$fy=0,$w,$h);
}
function _gdImgHandle($agdCanvas,$x,$y,$fx=0,$fy=0,$w=0,$h=0,$mix=100) {
if( $w == 0 ) {
$w = @imagesx($agdCanvas);
}
if( $w === NULL ) {
JpGraphError::RaiseL(12007);
//('Argument to MGraph::Add() is not a valid GD image handle.');
return;
}
if( $h == 0 ) {
$h = @imagesy($agdCanvas);
}
$this->iGraphs[$this->iCnt++] = array($agdCanvas,$x,$y,$fx,$fy,$w,$h,$mix);
}
function SetMargin($lm,$rm,$tm,$bm) {
$this->lm = $lm;
$this->rm = $rm;
$this->tm = $tm;
$this->bm = $bm;
}
function SetExpired($aFlg=true) {
$this->expired = $aFlg;
}
function SetImgFormat($aFormat,$aQuality=75) {
$this->image_format = $aFormat;
$this->image_quality = $aQuality;
}
// Set the shadow around the whole image
function SetShadow($aShowShadow=true,$aShadowWidth=4,$aShadowColor='gray@0.3') {
$this->doshadow = $aShowShadow;
$this->shadow_color = $aShadowColor;
$this->shadow_width = $aShadowWidth;
$this->footer->iBottomMargin += $aShadowWidth;
$this->footer->iRightMargin += $aShadowWidth;
}
function StrokeTitle($image,$w,$h) {
// Stroke title
if( $this->title->t !== '' ) {
$margin = 3;
$y = $this->title->margin;
if( $this->title->halign == 'center' ) {
$this->title->Center(0,$w,$y);
}
elseif( $this->title->halign == 'left' ) {
$this->title->SetPos($this->title->margin+2,$y);
}
elseif( $this->title->halign == 'right' ) {
$indent = 0;
if( $this->doshadow ) {
$indent = $this->shadow_width+2;
}
$this->title->SetPos($w-$this->title->margin-$indent,$y,'right');
}
$this->title->Stroke($image);
// ... and subtitle
$y += $this->title->GetTextHeight($image) + $margin + $this->subtitle->margin;
if( $this->subtitle->halign == 'center' ) {
$this->subtitle->Center(0,$w,$y);
}
elseif( $this->subtitle->halign == 'left' ) {
$this->subtitle->SetPos($this->subtitle->margin+2,$y);
}
elseif( $this->subtitle->halign == 'right' ) {
$indent = 0;
if( $this->doshadow ) {
$indent = $this->shadow_width+2;
}
$this->subtitle->SetPos($this->img->width-$this->subtitle->margin-$indent,$y,'right');
}
$this->subtitle->Stroke($image);
// ... and subsubtitle
$y += $this->subtitle->GetTextHeight($image) + $margin + $this->subsubtitle->margin;
if( $this->subsubtitle->halign == 'center' ) {
$this->subsubtitle->Center(0,$w,$y);
}
elseif( $this->subsubtitle->halign == 'left' ) {
$this->subsubtitle->SetPos($this->subsubtitle->margin+2,$y);
}
elseif( $this->subsubtitle->halign == 'right' ) {
$indent = 0;
if( $this->doshadow ) {
$indent = $this->shadow_width+2;
}
$this->subsubtitle->SetPos($w-$this->subsubtitle->margin-$indent,$y,'right');
}
$this->subsubtitle->Stroke($image);
}
}
function Stroke($aFileName='') {
// Find out the necessary size for the container image
$w=0; $h=0;
for($i=0; $i < $this->iCnt; ++$i ) {
$maxw = $this->iGraphs[$i][1]+$this->iGraphs[$i][5];
$maxh = $this->iGraphs[$i][2]+$this->iGraphs[$i][6];
$w = max( $w, $maxw );
$h = max( $h, $maxh );
}
$w += $this->lm+$this->rm;
$h += $this->tm+$this->bm;
// User specified width,height overrides
if( $this->iWidth !== NULL && $this->iWidth !== 0 ) $w = $this->iWidth;
if( $this->iHeight!== NULL && $this->iHeight !== 0) $h = $this->iHeight;
if( $this->doshadow ) {
$w += $this->shadow_width;
$h += $this->shadow_width;
}
$image = new Image($w,$h);
$image->SetImgFormat( $this->image_format,$this->image_quality);
if( $this->doshadow ) {
$image->SetColor($this->iFrameColor);
$image->ShadowRectangle(0,0,$w-1,$h-1,$this->iFillColor,$this->shadow_width,$this->shadow_color);
$w -= $this->shadow_width;
$h -= $this->shadow_width;
}
else {
$image->SetColor($this->iFillColor);
$image->FilledRectangle(0,0,$w-1,$h-1);
}
$image->SetExpired($this->expired);
$this->img = $image->img;
$this->_strokeBackgroundImage();
if( $this->iDoFrame && ! $this->doshadow ) {
$image->SetColor($this->iFrameColor);
$image->SetLineWeight($this->iFrameWeight);
$image->Rectangle(0,0,$w-1,$h-1);
}
// Copy all sub graphs to the container
for($i=0; $i < $this->iCnt; ++$i ) {
$image->CopyMerge($this->iGraphs[$i][0],
$this->iGraphs[$i][1]+$this->lm,$this->iGraphs[$i][2]+$this->tm,
$this->iGraphs[$i][3],$this->iGraphs[$i][4],
$this->iGraphs[$i][5],$this->iGraphs[$i][6],
-1,-1, /* Full from width and height */
$this->iGraphs[$i][7]);
}
$this->StrokeTitle($image,$w,$h);
$this->footer->Stroke($image);
// Output image
if( $aFileName == _IMG_HANDLER ) {
return $image->img;
}
else {
//Finally stream the generated picture
$this->cache = new ImgStreamCache();
$this->cache->PutAndStream($image,$this->cache_name,$this->inline,$aFileName);
}
}
}
// EOF
?>
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