[42] | 1 | <?php |
---|
| 2 | /*======================================================================= |
---|
| 3 | // File: JPGRAPH_CANVAS.PHP |
---|
| 4 | // Description: Canvas drawing extension for JpGraph |
---|
| 5 | // Created: 2001-01-08 |
---|
| 6 | // Ver: $Id: jpgraph_canvas.php 1923 2010-01-11 13:48:49Z ljp $ |
---|
| 7 | // |
---|
| 8 | // Copyright (c) Asial Corporation. All rights reserved. |
---|
| 9 | //======================================================================== |
---|
| 10 | */ |
---|
| 11 | |
---|
| 12 | //=================================================== |
---|
| 13 | // CLASS CanvasGraph |
---|
| 14 | // Description: Creates a simple canvas graph which |
---|
| 15 | // might be used together with the basic Image drawing |
---|
| 16 | // primitives. Useful to auickoly produce some arbitrary |
---|
| 17 | // graphic which benefits from all the functionality in the |
---|
| 18 | // graph liek caching for example. |
---|
| 19 | //=================================================== |
---|
| 20 | class CanvasGraph extends Graph { |
---|
| 21 | //--------------- |
---|
| 22 | // CONSTRUCTOR |
---|
| 23 | function __construct($aWidth=300,$aHeight=200,$aCachedName="",$timeout=0,$inline=1) { |
---|
| 24 | parent::__construct($aWidth,$aHeight,$aCachedName,$timeout,$inline); |
---|
| 25 | } |
---|
| 26 | |
---|
| 27 | //--------------- |
---|
| 28 | // PUBLIC METHODS |
---|
| 29 | |
---|
| 30 | function InitFrame() { |
---|
| 31 | $this->StrokePlotArea(); |
---|
| 32 | } |
---|
| 33 | |
---|
| 34 | // Method description |
---|
| 35 | function Stroke($aStrokeFileName="") { |
---|
| 36 | if( $this->texts != null ) { |
---|
| 37 | for($i=0; $i < count($this->texts); ++$i) { |
---|
| 38 | $this->texts[$i]->Stroke($this->img); |
---|
| 39 | } |
---|
| 40 | } |
---|
| 41 | if( $this->iTables !== null ) { |
---|
| 42 | for($i=0; $i < count($this->iTables); ++$i) { |
---|
| 43 | $this->iTables[$i]->Stroke($this->img); |
---|
| 44 | } |
---|
| 45 | } |
---|
| 46 | $this->StrokeTitles(); |
---|
| 47 | |
---|
| 48 | // If the filename is the predefined value = '_csim_special_' |
---|
| 49 | // we assume that the call to stroke only needs to do enough |
---|
| 50 | // to correctly generate the CSIM maps. |
---|
| 51 | // We use this variable to skip things we don't strictly need |
---|
| 52 | // to do to generate the image map to improve performance |
---|
| 53 | // a best we can. Therefor you will see a lot of tests !$_csim in the |
---|
| 54 | // code below. |
---|
| 55 | $_csim = ($aStrokeFileName===_CSIM_SPECIALFILE); |
---|
| 56 | |
---|
| 57 | // We need to know if we have stroked the plot in the |
---|
| 58 | // GetCSIMareas. Otherwise the CSIM hasn't been generated |
---|
| 59 | // and in the case of GetCSIM called before stroke to generate |
---|
| 60 | // CSIM without storing an image to disk GetCSIM must call Stroke. |
---|
| 61 | $this->iHasStroked = true; |
---|
| 62 | |
---|
| 63 | if( !$_csim ) { |
---|
| 64 | |
---|
| 65 | // Should we do any final image transformation |
---|
| 66 | if( $this->iImgTrans ) { |
---|
| 67 | if( !class_exists('ImgTrans',false) ) { |
---|
| 68 | require_once('jpgraph_imgtrans.php'); |
---|
| 69 | } |
---|
| 70 | |
---|
| 71 | $tform = new ImgTrans($this->img->img); |
---|
| 72 | $this->img->img = $tform->Skew3D($this->iImgTransHorizon,$this->iImgTransSkewDist, |
---|
| 73 | $this->iImgTransDirection,$this->iImgTransHighQ, |
---|
| 74 | $this->iImgTransMinSize,$this->iImgTransFillColor, |
---|
| 75 | $this->iImgTransBorder); |
---|
| 76 | } |
---|
| 77 | |
---|
| 78 | |
---|
| 79 | // If the filename is given as the special _IMG_HANDLER |
---|
| 80 | // then the image handler is returned and the image is NOT |
---|
| 81 | // streamed back |
---|
| 82 | if( $aStrokeFileName == _IMG_HANDLER ) { |
---|
| 83 | return $this->img->img; |
---|
| 84 | } |
---|
| 85 | else { |
---|
| 86 | // Finally stream the generated picture |
---|
| 87 | $this->cache->PutAndStream($this->img,$this->cache_name,$this->inline,$aStrokeFileName); |
---|
| 88 | return true; |
---|
| 89 | } |
---|
| 90 | } |
---|
| 91 | } |
---|
| 92 | } // Class |
---|
| 93 | |
---|
| 94 | /* EOF */ |
---|
| 95 | ?> |
---|