243 lines
10 KiB
PHP
243 lines
10 KiB
PHP
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<?php
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/*
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pDraw - pChart core class
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Version : 2.1.0
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Made by : Jean-Damien POGOLOTTI
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Last Update : 26/01/11
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This file can be distributed under the license you can find at :
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http://www.pchart.net/license
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You can find the whole class documentation on the pChart web site.
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*/
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/* The GD extension is mandatory */
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if (!extension_loaded('gd') && !extension_loaded('gd2'))
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{
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echo "GD extension must be loaded. \r\n";
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exit();
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}
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class pImage extends pDraw
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{
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/* Image settings, size, quality, .. */
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var $XSize = NULL; // Width of the picture
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var $YSize = NULL; // Height of the picture
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var $Picture = NULL; // GD picture object
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var $Antialias = TRUE; // Turn antialias on or off
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var $AntialiasQuality = 0; // Quality of the antialiasing implementation (0-1)
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var $Mask = ""; // Already drawn pixels mask (Filled circle implementation)
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var $TransparentBackground = FALSE; // Just to know if we need to flush the alpha channels when rendering
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/* Graph area settings */
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var $GraphAreaX1 = NULL; // Graph area X origin
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var $GraphAreaY1 = NULL; // Graph area Y origin
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var $GraphAreaX2 = NULL; // Graph area bottom right X position
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var $GraphAreaY2 = NULL; // Graph area bottom right Y position
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/* Scale settings */
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var $ScaleMinDivHeight = 20; // Minimum height for scame divs
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/* Font properties */
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var $FontName = "fonts/GeosansLight.ttf"; // Default font file
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var $FontSize = 12; // Default font size
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var $FontBox = NULL; // Return the bounding box of the last written string
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var $FontColorR = 0; // Default color settings
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var $FontColorG = 0; // Default color settings
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var $FontColorB = 0; // Default color settings
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var $FontColorA = 100; // Default transparency
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/* Shadow properties */
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var $Shadow = TRUE; // Turn shadows on or off
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var $ShadowX = NULL; // X Offset of the shadow
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var $ShadowY = NULL; // Y Offset of the shadow
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var $ShadowR = NULL; // R component of the shadow
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var $ShadowG = NULL; // G component of the shadow
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var $ShadowB = NULL; // B component of the shadow
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var $Shadowa = NULL; // Alpha level of the shadow
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/* Data Set */
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var $DataSet = NULL; // Attached dataset
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/* Class constructor */
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function pImage($XSize,$YSize,$DataSet=NULL,$TransparentBackground=FALSE)
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{
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$this->TransparentBackground = $TransparentBackground;
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if ( $DataSet != NULL ) { $this->DataSet = $DataSet; }
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$this->XSize = $XSize;
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$this->YSize = $YSize;
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$this->Picture = imagecreatetruecolor($XSize,$YSize);
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if ( $this->TransparentBackground )
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{
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imagealphablending($this->Picture,FALSE);
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imagefilledrectangle($this->Picture, 0,0,$XSize, $YSize, imagecolorallocatealpha($this->Picture, 255, 255, 255, 127));
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imagealphablending($this->Picture,TRUE);
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imagesavealpha($this->Picture,true);
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}
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else
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{
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$C_White = $this->AllocateColor($this->Picture,255,255,255);
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imagefilledrectangle($this->Picture,0,0,$XSize,$YSize,$C_White);
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}
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}
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/* Enable / Disable and set shadow properties */
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function setShadow($Enabled=TRUE,$Format="")
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{
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$X = isset($Format["X"]) ? $Format["X"] : 2;
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$Y = isset($Format["Y"]) ? $Format["Y"] : 2;
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$R = isset($Format["R"]) ? $Format["R"] : 0;
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$G = isset($Format["G"]) ? $Format["G"] : 0;
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$B = isset($Format["B"]) ? $Format["B"] : 0;
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$Alpha = isset($Format["Alpha"]) ? $Format["Alpha"] : 10;
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$this->Shadow = $Enabled;
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$this->ShadowX = $X;
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$this->ShadowY = $Y;
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$this->ShadowR = $R;
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$this->ShadowG = $G;
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$this->ShadowB = $B;
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$this->Shadowa = $Alpha;
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}
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/* Set the graph area position */
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function setGraphArea($X1,$Y1,$X2,$Y2)
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{
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if ( $X2 < $X1 || $X1 == $X2 || $Y2 < $Y1 || $Y1 == $Y2 ) { return(-1); }
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$this->GraphAreaX1 = $X1; $this->DataSet->Data["GraphArea"]["X1"] = $X1;
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$this->GraphAreaY1 = $Y1; $this->DataSet->Data["GraphArea"]["Y1"] = $Y1;
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$this->GraphAreaX2 = $X2; $this->DataSet->Data["GraphArea"]["X2"] = $X2;
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$this->GraphAreaY2 = $Y2; $this->DataSet->Data["GraphArea"]["Y2"] = $Y2;
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}
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/* Return the width of the picture */
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function getWidth()
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{ return($this->XSize); }
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/* Return the heigth of the picture */
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function getHeight()
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{ return($this->YSize); }
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/* Render the picture to a file */
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function render($FileName)
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{
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if ( $this->TransparentBackground ) { imagealphablending($this->Picture,false); imagesavealpha($this->Picture,true); }
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imagepng($this->Picture,$FileName);
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}
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/* Render the picture to a web browser stream */
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function stroke()
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{
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if ( $this->TransparentBackground ) { imagealphablending($this->Picture,false); imagesavealpha($this->Picture,true); }
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header('Content-type: image/png');
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imagepng($this->Picture);
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}
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/* Automatic output method based on the calling interface */
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function autoOutput($FileName="output.png")
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{
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if (php_sapi_name() == "cli")
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$this->Render($FileName);
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else
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$this->Stroke();
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}
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/* Return the length between two points */
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function getLength($X1,$Y1,$X2,$Y2)
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{ return(sqrt(pow(max($X1,$X2)-min($X1,$X2),2)+pow(max($Y1,$Y2)-min($Y1,$Y2),2))); }
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/* Return the orientation of a line */
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function getAngle($X1,$Y1,$X2,$Y2)
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{
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$Opposite = $Y2 - $Y1; $Adjacent = $X2 - $X1;$Angle = rad2deg(atan2($Opposite,$Adjacent));
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if ($Angle > 0) { return($Angle); } else { return(360-abs($Angle)); }
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}
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/* Return the surrounding box of text area */
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function getTextBox_deprecated($X,$Y,$FontName,$FontSize,$Angle,$Text)
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{
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$Size = imagettfbbox($FontSize,$Angle,$FontName,$Text);
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$Width = $this->getLength($Size[0],$Size[1],$Size[2],$Size[3])+1;
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$Height = $this->getLength($Size[2],$Size[3],$Size[4],$Size[5])+1;
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$RealPos[0]["X"] = $X; $RealPos[0]["Y"] = $Y;
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$RealPos[1]["X"] = cos((360-$Angle)*PI/180)*$Width + $RealPos[0]["X"]; $RealPos[1]["Y"] = sin((360-$Angle)*PI/180)*$Width + $RealPos[0]["Y"];
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$RealPos[2]["X"] = cos((270-$Angle)*PI/180)*$Height + $RealPos[1]["X"]; $RealPos[2]["Y"] = sin((270-$Angle)*PI/180)*$Height + $RealPos[1]["Y"];
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$RealPos[3]["X"] = cos((180-$Angle)*PI/180)*$Width + $RealPos[2]["X"]; $RealPos[3]["Y"] = sin((180-$Angle)*PI/180)*$Width + $RealPos[2]["Y"];
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$RealPos[TEXT_ALIGN_BOTTOMLEFT]["X"] = $RealPos[0]["X"]; $RealPos[TEXT_ALIGN_BOTTOMLEFT]["Y"] = $RealPos[0]["Y"];
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$RealPos[TEXT_ALIGN_BOTTOMRIGHT]["X"] = $RealPos[1]["X"]; $RealPos[TEXT_ALIGN_BOTTOMRIGHT]["Y"] = $RealPos[1]["Y"];
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return($RealPos);
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}
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/* Return the surrounding box of text area */
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function getTextBox($X,$Y,$FontName,$FontSize,$Angle,$Text)
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{
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$coords = imagettfbbox($FontSize, 0, $FontName, $Text);
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$a = deg2rad($Angle); $ca = cos($a); $sa = sin($a); $RealPos = array();
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for($i = 0; $i < 7; $i += 2)
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{
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$RealPos[$i/2]["X"] = $X + round($coords[$i] * $ca + $coords[$i+1] * $sa);
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$RealPos[$i/2]["Y"] = $Y + round($coords[$i+1] * $ca - $coords[$i] * $sa);
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}
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$RealPos[TEXT_ALIGN_BOTTOMLEFT]["X"] = $RealPos[0]["X"]; $RealPos[TEXT_ALIGN_BOTTOMLEFT]["Y"] = $RealPos[0]["Y"];
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$RealPos[TEXT_ALIGN_BOTTOMRIGHT]["X"] = $RealPos[1]["X"]; $RealPos[TEXT_ALIGN_BOTTOMRIGHT]["Y"] = $RealPos[1]["Y"];
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$RealPos[TEXT_ALIGN_TOPLEFT]["X"] = $RealPos[3]["X"]; $RealPos[TEXT_ALIGN_TOPLEFT]["Y"] = $RealPos[3]["Y"];
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$RealPos[TEXT_ALIGN_TOPRIGHT]["X"] = $RealPos[2]["X"]; $RealPos[TEXT_ALIGN_TOPRIGHT]["Y"] = $RealPos[2]["Y"];
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$RealPos[TEXT_ALIGN_BOTTOMMIDDLE]["X"] = ($RealPos[1]["X"]-$RealPos[0]["X"])/2+$RealPos[0]["X"]; $RealPos[TEXT_ALIGN_BOTTOMMIDDLE]["Y"] = ($RealPos[0]["Y"]-$RealPos[1]["Y"])/2+$RealPos[1]["Y"];
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$RealPos[TEXT_ALIGN_TOPMIDDLE]["X"] = ($RealPos[2]["X"]-$RealPos[3]["X"])/2+$RealPos[3]["X"]; $RealPos[TEXT_ALIGN_TOPMIDDLE]["Y"] = ($RealPos[3]["Y"]-$RealPos[2]["Y"])/2+$RealPos[2]["Y"];
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$RealPos[TEXT_ALIGN_MIDDLELEFT]["X"] = ($RealPos[0]["X"]-$RealPos[3]["X"])/2+$RealPos[3]["X"]; $RealPos[TEXT_ALIGN_MIDDLELEFT]["Y"] = ($RealPos[0]["Y"]-$RealPos[3]["Y"])/2+$RealPos[3]["Y"];
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$RealPos[TEXT_ALIGN_MIDDLERIGHT]["X"] = ($RealPos[1]["X"]-$RealPos[2]["X"])/2+$RealPos[2]["X"]; $RealPos[TEXT_ALIGN_MIDDLERIGHT]["Y"] = ($RealPos[1]["Y"]-$RealPos[2]["Y"])/2+$RealPos[2]["Y"];
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$RealPos[TEXT_ALIGN_MIDDLEMIDDLE]["X"] = ($RealPos[1]["X"]-$RealPos[3]["X"])/2+$RealPos[3]["X"]; $RealPos[TEXT_ALIGN_MIDDLEMIDDLE]["Y"] = ($RealPos[0]["Y"]-$RealPos[2]["Y"])/2+$RealPos[2]["Y"];
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return($RealPos);
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}
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/* Set current font properties */
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function setFontProperties($Format="")
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{
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$R = isset($Format["R"]) ? $Format["R"] : -1;
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$G = isset($Format["G"]) ? $Format["G"] : -1;
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$B = isset($Format["B"]) ? $Format["B"] : -1;
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$Alpha = isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
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$FontName = isset($Format["FontName"]) ? $Format["FontName"] : NULL;
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$FontSize = isset($Format["FontSize"]) ? $Format["FontSize"] : NULL;
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if ( $R != -1) { $this->FontColorR = $R; }
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if ( $G != -1) { $this->FontColorG = $G; }
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if ( $B != -1) { $this->FontColorB = $B; }
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if ( $Alpha != NULL) { $this->FontColorA = $Alpha; }
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if ( $FontName != NULL )
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$this->FontName = $FontName;
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if ( $FontSize != NULL )
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$this->FontSize = $FontSize;
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}
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/* Returns the 1st decimal values (used to correct AA bugs) */
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function getFirstDecimal($Value)
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{
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$Values = preg_split("/\./",$Value);
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if ( isset($Values[1]) ) { return(substr($Values[1],0,1)); } else { return(0); }
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}
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/* Attach a dataset to your pChart Object */
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function setDataSet(&$DataSet)
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{ $this->DataSet = $DataSet; }
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/* Print attached dataset contents to STDOUT */
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function printDataSet()
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{ print_r($this->DataSet); }
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}
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?>
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