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