forked from aweiland/pChart-php5
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pChart.php
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pChart.php
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<?php
/**
* pChart - a PHP class to build charts!
* Copyright (C) 2008 Jean-Damien POGOLOTTI
* Version 2.0
*
* http://pchart.sourceforge.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 1,2,3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
require_once(dirname(__FILE__).'/ConversionHelpers.php');
require_once(dirname(__FILE__).'/ShadowProperties.php');
require_once(dirname(__FILE__).'/Color.php');
require_once(dirname(__FILE__).'/Palette.php');
require_once(dirname(__FILE__).'/ICanvas.php');
require_once(dirname(__FILE__).'/GridStyle.php');
require_once(dirname(__FILE__).'/ScaleStyle.php');
/* Declare some script wide constants */
define ( "SCALE_NORMAL", 1 );
define ( "SCALE_ADDALL", 2 );
define ( "SCALE_START0", 3 );
define ( "SCALE_ADDALLSTART0", 4 );
define ( "PIE_PERCENTAGE", 1 );
define ( "PIE_LABELS", 2 );
define ( "PIE_NOLABEL", 3 );
define ( "PIE_PERCENTAGE_LABEL", 4 );
define ( "TARGET_GRAPHAREA", 1 );
define ( "TARGET_BACKGROUND", 2 );
define ( "ALIGN_TOP_LEFT", 1 );
define ( "ALIGN_TOP_CENTER", 2 );
define ( "ALIGN_TOP_RIGHT", 3 );
define ( "ALIGN_LEFT", 4 );
define ( "ALIGN_CENTER", 5 );
define ( "ALIGN_RIGHT", 6 );
define ( "ALIGN_BOTTOM_LEFT", 7 );
define ( "ALIGN_BOTTOM_CENTER", 8 );
define ( "ALIGN_BOTTOM_RIGHT", 9 );
/**
* pChart class definition
*/
class pChart {
protected $palette;
/* Some static vars used in the class */
protected $XSize = NULL;
protected $YSize = NULL;
protected $Picture = NULL;
protected $ImageMap = NULL;
/* Error management */
protected $ErrorReporting = FALSE;
protected $ErrorInterface = "CLI";
protected $Errors = NULL;
protected $ErrorFontName = "Fonts/pf_arma_five.ttf";
protected $ErrorFontSize = 6;
/* vars related to the graphing area */
protected $GArea_X1 = NULL;
protected $GArea_Y1 = NULL;
protected $GArea_X2 = NULL;
protected $GArea_Y2 = NULL;
protected $GAreaXOffset = NULL;
protected $VMax = NULL;
protected $VMin = NULL;
protected $VXMax = NULL;
protected $VXMin = NULL;
protected $Divisions = NULL;
protected $XDivisions = NULL;
protected $DivisionHeight = NULL;
protected $XDivisionHeight = NULL;
protected $DivisionCount = NULL;
protected $XDivisionCount = NULL;
protected $DivisionRatio = NULL;
protected $XDivisionRatio = NULL;
protected $DivisionWidth = NULL;
protected $DataCount = NULL;
/* Text format related vars */
protected $FontName = NULL;
protected $FontSize = NULL;
protected $DateFormat = "d/m/Y";
/* Lines format related vars */
protected $LineWidth = 1;
protected $LineDotSize = 0;
/* Shadow settings */
private $shadowProperties;
/* Image Map settings */
protected $BuildMap = FALSE;
protected $MapFunction = NULL;
protected $tmpFolder = "tmp/";
protected $MapID = NULL;
/**
* @brief An abstract ICanvas onto which we draw the chart
*
* @todo This probably shouldn't be protected, I'm still working
* on how the modules are going to break down between the various
* chart types.
*/
protected $canvas = null;
/**
* This function create the background picture
*/
function __construct($XSize, $YSize, ICanvas $canvas) {
$this->palette = Palette::defaultPalette();
$this->XSize = $XSize;
$this->YSize = $YSize;
$this->setFontProperties ( "tahoma.ttf", 8 );
$this->shadowProperties = ShadowProperties::FromDefaults();
$this->canvas = $canvas;
}
/**
* Set if warnings should be reported
*/
function reportWarnings($Interface = "CLI") {
$this->ErrorReporting = TRUE;
$this->ErrorInterface = $Interface;
}
/**
* Set the font properties
*/
function setFontProperties($FontName, $FontSize) {
$this->FontName = $FontName;
$this->FontSize = $FontSize;
}
public function setPalette(Palette $newPalette) {
$this->palette = $newPalette;
}
/**
* Set the shadow properties
*/
function setShadowProperties($XDistance = 1, $YDistance = 1, Color $color = null, $Alpha = 50, $Blur = 0) {
if ($color == null) {
$color = new Color(60, 60, 60);
}
$this->shadowProperties = ShadowProperties::FromSettings($XDistance,
$YDistance,
$color,
$Alpha,
$Blur);
}
/**
* Remove shadow option
*/
function clearShadow() {
$this->shadowProperties = ShadowProperties::FromDefaults();
}
/**
* Load Color Palette from file
*/
function loadColorPalette($FileName, $Delimiter = ",") {
$handle = @fopen ( $FileName, "r" );
if ($handle == null) {
throw new Exception("Failed to open file in loadColorPalette");
}
$ColorID = 0;
if ($handle) {
while ( ! feof ( $handle ) ) {
$buffer = fgets ( $handle, 4096 );
$buffer = str_replace ( chr ( 10 ), "", $buffer );
$buffer = str_replace ( chr ( 13 ), "", $buffer );
$Values = explode ( $Delimiter, $buffer );
if (count ( $Values ) == 3) {
$this->palette->colors[$ColorID] = new Color($Values[0],
$Values[1],
$Values[2]);
$ColorID ++;
}
}
}
}
/**
* Set line style
*/
function setLineStyle($Width = 1, $DotSize = 0) {
$this->LineWidth = $Width;
$this->LineDotSize = $DotSize;
}
/**
* Set the graph area location
*/
function setGraphArea($X1, $Y1, $X2, $Y2) {
$this->GArea_X1 = $X1;
$this->GArea_Y1 = $Y1;
$this->GArea_X2 = $X2;
$this->GArea_Y2 = $Y2;
}
/**
* Prepare the graph area
*/
private function drawGraphArea(BackgroundStyle $style) {
$this->canvas->drawFilledRectangle(new Point($this->GArea_X1, $this->GArea_Y1),
new Point($this->GArea_X2, $this->GArea_Y2),
$style->getBackgroundColor(),
$this->shadowProperties, FALSE );
$this->canvas->drawRectangle(new Point($this->GArea_X1, $this->GArea_Y1),
new Point($this->GArea_X2, $this->GArea_Y2),
$style->getBackgroundColor()->addRGBIncrement(-40),
$style->getBorderWidth(),
$style->getBorderDotSize(),
$this->shadowProperties);
if ($style->useStripe()) {
$color2 = $style->getBackgroundColor()->addRGBIncrement(-15);
$SkewWidth = $this->GArea_Y2 - $this->GArea_Y1 - 1;
for($i = $this->GArea_X1 - $SkewWidth; $i <= $this->GArea_X2; $i = $i + 4) {
$X1 = $i;
$Y1 = $this->GArea_Y2;
$X2 = $i + $SkewWidth;
$Y2 = $this->GArea_Y1;
if ($X1 < $this->GArea_X1) {
$X1 = $this->GArea_X1;
$Y1 = $this->GArea_Y1 + $X2 - $this->GArea_X1 + 1;
}
if ($X2 >= $this->GArea_X2) {
$Y2 = $this->GArea_Y1 + $X2 - $this->GArea_X2 + 1;
$X2 = $this->GArea_X2 - 1;
}
$this->canvas->drawLine(new Point($X1, $Y1),
new Point($X2, $Y2 + 1),
$color2,
1,
0,
ShadowProperties::NoShadow());
}
}
}
public function drawGraphBackground(BackgroundStyle $style) {
$this->drawGraphArea($style);
$this->drawGraphAreaGradient($style);
}
/**
* Allow you to clear the scale : used if drawing multiple charts
*/
function clearScale() {
$this->VMin = NULL;
$this->VMax = NULL;
$this->VXMin = NULL;
$this->VXMax = NULL;
$this->Divisions = NULL;
$this->XDivisions = NULL;
}
/**
* Allow you to fix the scale, use this to bypass the automatic scaling
*/
function setFixedScale($VMin, $VMax, $Divisions = 5, $VXMin = 0, $VXMax = 0, $XDivisions = 5) {
$this->VMin = $VMin;
$this->VMax = $VMax;
$this->Divisions = $Divisions;
if (! $VXMin == 0) {
$this->VXMin = $VXMin;
$this->VXMax = $VXMax;
$this->XDivisions = $XDivisions;
}
}
/**
* Wrapper to the drawScale() function allowing a second scale to
* be drawn
*/
function drawRightScale(pData $data, ScaleStyle $style, $Angle = 0, $Decimals = 1, $WithMargin = FALSE, $SkipLabels = 1) {
$this->drawScale($data, $style, $Angle, $Decimals, $WithMargin, $SkipLabels, TRUE );
}
/**
* Compute and draw the scale
*/
function drawScale(pData $Data, ScaleStyle $style, $Angle = 0, $Decimals = 1, $WithMargin = FALSE, $SkipLabels = 1, $RightScale = FALSE) {
/* Validate the Data and DataDescription array */
$this->validateData ( "drawScale", $Data->getData() );
$this->canvas->drawLine(new Point($this->GArea_X1, $this->GArea_Y1),
new Point($this->GArea_X1, $this->GArea_Y2),
$style->getColor(),
$style->getLineWidth(),
$style->getLineDotSize(),
$this->shadowProperties);
$this->canvas->drawLine(new Point($this->GArea_X1, $this->GArea_Y2),
new Point($this->GArea_X2, $this->GArea_Y2),
$style->getColor(),
$style->getLineWidth(),
$style->getLineDotSize(),
$this->shadowProperties);
if ($this->VMin == NULL && $this->VMax == NULL) {
$Divisions = $this->calculateDivisions($Data, $style);
} else
$Divisions = $this->Divisions;
$this->DivisionCount = $Divisions;
$DataRange = $this->VMax - $this->VMin;
if ($DataRange == 0) {
$DataRange = .1;
}
$this->DivisionHeight = ($this->GArea_Y2 - $this->GArea_Y1) / $Divisions;
$this->DivisionRatio = ($this->GArea_Y2 - $this->GArea_Y1) / $DataRange;
$this->GAreaXOffset = 0;
if (count ( $Data->getData() ) > 1) {
if ($WithMargin == FALSE)
$this->DivisionWidth = ($this->GArea_X2 - $this->GArea_X1) / (count ( $Data->getData() ) - 1);
else {
$this->DivisionWidth = ($this->GArea_X2 - $this->GArea_X1) / (count ( $Data->getData() ));
$this->GAreaXOffset = $this->DivisionWidth / 2;
}
} else {
$this->DivisionWidth = $this->GArea_X2 - $this->GArea_X1;
$this->GAreaXOffset = $this->DivisionWidth / 2;
}
$this->DataCount = count ( $Data->getData() );
if ($style->getDrawTicks() == FALSE)
return (0);
$YPos = $this->GArea_Y2;
$XMin = NULL;
for($i = 1; $i <= $Divisions + 1; $i ++) {
if ($RightScale)
$this->canvas->drawLine(new Point($this->GArea_X2, $YPos),
new Point($this->GArea_X2 + 5, $YPos),
$style->getColor(),
$style->getLineWidth(),
$style->getLineDotSize(),
$this->shadowProperties);
else
$this->canvas->drawLine(new Point($this->GArea_X1, $YPos),
new Point($this->GArea_X1 - 5, $YPos),
$style->getColor(),
$style->getLineWidth(),
$style->getLineDotSize(),
$this->shadowProperties);
$Value = $this->VMin + ($i - 1) * (($this->VMax - $this->VMin) / $Divisions);
$Value = round ( $Value * pow ( 10, $Decimals ) ) / pow ( 10, $Decimals );
$Value = $this->convertValueForDisplay($Value,
$Data->getDataDescription()->getYFormat(),
$Data->getDataDescription()->getYUnit());
$Position = imageftbbox ( $this->FontSize, 0, $this->FontName, $Value );
$TextWidth = $Position [2] - $Position [0];
if ($RightScale) {
$this->canvas->drawText($this->FontSize, 0,
new Point($this->GArea_X2 + 10,
$YPos + ($this->FontSize / 2)),
$style->getColor(),
$this->FontName,
$Value,
ShadowProperties::NoShadow());
if ($XMin < $this->GArea_X2 + 15 + $TextWidth || $XMin == NULL) {
$XMin = $this->GArea_X2 + 15 + $TextWidth;
}
} else {
$this->canvas->drawText($this->FontSize,
0,
new Point($this->GArea_X1 - 10 - $TextWidth,
$YPos + ($this->FontSize / 2)),
$style->getColor(),
$this->FontName,
$Value,
ShadowProperties::NoShadow());
if ($XMin > $this->GArea_X1 - 10 - $TextWidth || $XMin == NULL) {
$XMin = $this->GArea_X1 - 10 - $TextWidth;
}
}
$YPos = $YPos - $this->DivisionHeight;
}
/* Write the Y Axis caption if set */
if ($Data->getDataDescription()->getYAxisName() != '') {
$Position = imageftbbox ( $this->FontSize, 90, $this->FontName, $Data->getDataDescription()->getYAxisName() );
$TextHeight = abs ( $Position [1] ) + abs ( $Position [3] );
$TextTop = (($this->GArea_Y2 - $this->GArea_Y1) / 2) + $this->GArea_Y1 + ($TextHeight / 2);
if ($RightScale) {
$this->canvas->drawText($this->FontSize, 90,
new Point($XMin + $this->FontSize,
$TextTop),
$style->getColor(), $this->FontName,
$Data->getDataDescription()->getYAxisName(),
ShadowProperties::NoShadow());
}
else {
$this->canvas->drawText($this->FontSize, 90,
new Point($XMin - $this->FontSize,
$TextTop),
$style->getColor(), $this->FontName,
$Data->getDataDescription()->getYAxisName(),
ShadowProperties::NoShadow());
}
}
/* Horizontal Axis */
$XPos = $this->GArea_X1 + $this->GAreaXOffset;
$ID = 1;
$YMax = NULL;
foreach ( $Data->getData() as $Values ) {
if ($ID % $SkipLabels == 0) {
$this->canvas->drawLine(new Point(floor($XPos), $this->GArea_Y2),
new Point(floor($XPos), $this->GArea_Y2 + 5),
$style->getColor(),
$style->getLineWidth(),
$style->getLineDotSize(),
$this->shadowProperties);
$Value = $Values[$Data->getDataDescription()->getPosition()];
$Value = $this->convertValueForDisplay($Value,
$Data->getDataDescription()->getXFormat(),
$Data->getDataDescription()->getXUnit());
$Position = imageftbbox ( $this->FontSize, $Angle, $this->FontName, $Value );
$TextWidth = abs ( $Position [2] ) + abs ( $Position [0] );
$TextHeight = abs ( $Position [1] ) + abs ( $Position [3] );
if ($Angle == 0) {
$YPos = $this->GArea_Y2 + 18;
$this->canvas->drawText($this->FontSize,
$Angle,
new Point(floor ( $XPos ) - floor ( $TextWidth / 2 ),
$YPos),
$style->getColor(),
$this->FontName,
$Value,
ShadowProperties::NoShadow());
} else {
$YPos = $this->GArea_Y2 + 10 + $TextHeight;
if ($Angle <= 90) {
$this->canvas->drawText($this->FontSize,
$Angle,
new Point(floor($XPos) - $TextWidth + 5,
$YPos),
$style->getColor(),
$this->FontName,
$Value,
ShadowProperties::NoShadow());
}
else {
$this->canvas->drawText($this->FontSize,
$Angle,
new Point(floor ( $XPos ) + $TextWidth + 5,
$YPos),
$style->getColor(),
$this->FontName,
$Value,
ShadowProperties::NoShadow());
}
}
if ($YMax < $YPos || $YMax == NULL) {
$YMax = $YPos;
}
}
$XPos = $XPos + $this->DivisionWidth;
$ID ++;
}
/* Write the X Axis caption if set */
if ($Data->getDataDescription()->getXAxisName() != '') {
$Position = imageftbbox ( $this->FontSize, 90,
$this->FontName,
$Data->getDataDescription()->getXAxisName());
$TextWidth = abs ( $Position [2] ) + abs ( $Position [0] );
$TextLeft = (($this->GArea_X2 - $this->GArea_X1) / 2) + $this->GArea_X1 + ($TextWidth / 2);
$this->canvas->drawText($this->FontSize, 0,
new Point($TextLeft,
$YMax + $this->FontSize + 5),
$style->getColor(), $this->FontName,
$Data->getDataDescription()->getXAxisName(),
ShadowProperties::NoShadow());
}
}
/**
* Calculate the number of divisions that the Y axis will be
* divided into. This is a function of the range of Y values the
* data covers, as well as the scale style. Divisions should have
* some minimum size in screen coordinates in order that the
* divisions are clearly visible, so this is also a function of
* the graph size in screen coordinates.
*
* This method returns the number of divisions, but it also has
* side-effects on some class data members. This needs to be
* refactored to make it clearer what is and isn't affected.
*/
private function calculateDivisions(pData $Data, ScaleStyle $style) {
if (isset ( $Data->getDataDescription()->values[0] )) {
/* Pointless temporary is necessary because you can't
* directly apply an array index to the return value
* of a function in PHP */
$dataArray = $Data->getData();
$this->VMin = $dataArray[0] [$Data->getDataDescription()->values[0]];
$this->VMax = $dataArray[0] [$Data->getDataDescription()->values[0]];
} else {
$this->VMin = 2147483647;
$this->VMax = - 2147483647;
}
/* Compute Min and Max values */
if ($style->getScaleMode() == SCALE_NORMAL
|| $style->getScaleMode() == SCALE_START0) {
if ($style->getScaleMode() == SCALE_START0) {
$this->VMin = 0;
}
foreach ( $Data->getData() as $Values ) {
foreach ( $Data->getDataDescription()->values as $ColName ) {
if (isset ( $Values[$ColName] )) {
$Value = $Values[$ColName];
if (is_numeric ( $Value )) {
if ($this->VMax < $Value) {
$this->VMax = $Value;
}
if ($this->VMin > $Value) {
$this->VMin = $Value;
}
}
}
}
}
} elseif ($style->getScaleMode() == SCALE_ADDALL || $style->getScaleMode() == SCALE_ADDALLSTART0 ) /* Experimental */ {
if ($style->getScaleMode() == SCALE_ADDALLSTART0) {
$this->VMin = 0;
}
foreach ( $Data->getData() as $Values ) {
$Sum = 0;
foreach ( $Data->getDataDescription()->values as $ColName ) {
$dataArray = $Data->getData();
if (isset ( $Values[$ColName] )) {
$Value = $Values[$ColName];
if (is_numeric ( $Value ))
$Sum += $Value;
}
}
if ($this->VMax < $Sum) {
$this->VMax = $Sum;
}
if ($this->VMin > $Sum) {
$this->VMin = $Sum;
}
}
}
$this->VMax = ceil($this->VMax);
/* If all values are the same */
if ($this->VMax == $this->VMin) {
if ($this->VMax >= 0) {
$this->VMax ++;
} else {
$this->VMin --;
}
}
$DataRange = $this->VMax - $this->VMin;
if ($DataRange == 0) {
$DataRange = .1;
}
$this->calculateScales($Scale, $Divisions);
if (! isset ( $Divisions ))
$Divisions = 2;
if ($Scale == 1 && $Divisions % 2 == 1)
$Divisions --;
return $Divisions;
}
/**
* Compute and draw the scale for X/Y charts
*/
function drawXYScale(pData $Data, ScaleStyle $style, $YSerieName, $XSerieName, $Angle = 0, $Decimals = 1) {
/* Validate the Data and DataDescription array */
$this->validateData ( "drawScale", $Data->getData());
$this->canvas->drawLine(new Point($this->GArea_X1, $this->GArea_Y1),
new Point($this->GArea_X1, $this->GArea_Y2),
$style->getColor(),
$style->getLineWidth(),
$style->getLineDotSize(),
$this->shadowProperties);
$this->canvas->drawLine(new Point($this->GArea_X1, $this->GArea_Y2),
new Point($this->GArea_X2, $this->GArea_Y2),
$style->getColor(),
$style->getLineWidth(),
$style->getLineDotSize(),
$this->shadowProperties);
/* Process Y scale */
if ($this->VMin == NULL && $this->VMax == NULL) {
$this->VMin = $Data->getSeriesMin($YSerieName);
$this->VMax = $Data->getSeriesMax($YSerieName);
/** @todo The use of ceil() here is questionable if all
* the values are much less than 1, AIUI */
$this->VMax = ceil($this->VMax);
$DataRange = $this->VMax - $this->VMin;
if ($DataRange == 0) {
$DataRange = .1;
}
self::computeAutomaticScaling($this->GArea_Y1,
$this->GArea_Y2,
$this->VMin,
$this->VMax,
$Divisions);
} else
$Divisions = $this->Divisions;
$this->DivisionCount = $Divisions;
$DataRange = $this->VMax - $this->VMin;
if ($DataRange == 0) {
$DataRange = .1;
}
$this->DivisionHeight = ($this->GArea_Y2 - $this->GArea_Y1) / $Divisions;
$this->DivisionRatio = ($this->GArea_Y2 - $this->GArea_Y1) / $DataRange;
$YPos = $this->GArea_Y2;
$XMin = NULL;
for($i = 1; $i <= $Divisions + 1; $i ++) {
$this->canvas->drawLine(new Point($this->GArea_X1, $YPos),
new Point($this->GArea_X1 - 5, $YPos),
$style->getColor(),
$style->getLineWidth(),
$style->getLineDotSize(),
$this->shadowProperties);
$Value = $this->VMin + ($i - 1) * (($this->VMax - $this->VMin) / $Divisions);
$Value = round ( $Value * pow ( 10, $Decimals ) ) / pow ( 10, $Decimals );
$Value = $this->convertValueForDisplay($Value,
$Data->getDataDescription()->getYFormat(),
$Data->getDataDescription()->getYUnit());
$Position = imageftbbox ( $this->FontSize, 0, $this->FontName, $Value );
$TextWidth = $Position [2] - $Position [0];
$this->canvas->drawText($this->FontSize,
0,
new Point($this->GArea_X1 - 10 - $TextWidth,
$YPos + ($this->FontSize / 2)),
$style->getColor(),
$this->FontName,
$Value,
$this->shadowProperties);
if ($XMin > $this->GArea_X1 - 10 - $TextWidth || $XMin == NULL) {
$XMin = $this->GArea_X1 - 10 - $TextWidth;
}
$YPos = $YPos - $this->DivisionHeight;
}
/* Process X scale */
if ($this->VXMin == NULL && $this->VXMax == NULL) {
$this->VXMax = $Data->getSeriesMax($XSerieName);
$this->VXMin = $Data->getSeriesMin($XSerieName);
$this->VXMax = ceil($this->VXMax);
$DataRange = $this->VMax - $this->VMin;
if ($DataRange == 0) {
$DataRange = .1;
}
/* Compute automatic scaling */
self::computeAutomaticScaling($this->GArea_X1, $this->GArea_X2,
$this->VXMin, $this->VXMax,
$XDivisions);
} else
$XDivisions = $this->XDivisions;
$this->XDivisionCount = $Divisions;
$this->DataCount = $Divisions + 2;
$XDataRange = $this->VXMax - $this->VXMin;
if ($XDataRange == 0) {
$XDataRange = .1;
}
$this->DivisionWidth = ($this->GArea_X2 - $this->GArea_X1) / $XDivisions;
$this->XDivisionRatio = ($this->GArea_X2 - $this->GArea_X1) / $XDataRange;
$XPos = $this->GArea_X1;
$YMax = NULL;
for($i = 1; $i <= $XDivisions + 1; $i ++) {
$this->canvas->drawLine(new Point($XPos, $this->GArea_Y2),
new Point($XPos, $this->GArea_Y2 + 5),
$style->getColor(),
$style->getLineWidth(),
$style->getLineDotSize(),
$this->shadowProperties);
$Value = $this->VXMin + ($i - 1) * (($this->VXMax - $this->VXMin) / $XDivisions);
$Value = round ( $Value * pow ( 10, $Decimals ) ) / pow ( 10, $Decimals );
$Value = $this->convertValueForDisplay($Value,
$Data->getDataDescription()->getYFormat(),
$Data->getDataDescription()->getYUnit());
$Position = imageftbbox ( $this->FontSize, $Angle, $this->FontName, $Value );
$TextWidth = abs ( $Position [2] ) + abs ( $Position [0] );
$TextHeight = abs ( $Position [1] ) + abs ( $Position [3] );
if ($Angle == 0) {
$YPos = $this->GArea_Y2 + 18;
$this->canvas->drawText($this->FontSize,
$Angle,
new Point(floor ( $XPos ) - floor ( $TextWidth / 2 ),
$YPos),
$style->getColor(),
$this->FontName,
$Value,
$this->shadowProperties);
} else {
$YPos = $this->GArea_Y2 + 10 + $TextHeight;
if ($Angle <= 90) {
$this->canvas->drawText($this->FontSize,
$Angle,
new Point(floor ( $XPos ) - $TextWidth + 5,
$YPos),
$style->getColor(),
$this->FontName,
$Value,
$this->shadowProperties);
}
else {
$this->canvas->drawText($this->FontSize,
$Angle,
new Point(floor ( $XPos ) + $TextWidth + 5,
$YPos),
$style->getColor(),
$this->FontName,
$Value,
$this->shadowProperties);
}
}
if ($YMax < $YPos || $YMax == NULL) {
$YMax = $YPos;
}
$XPos = $XPos + $this->DivisionWidth;
}
/* Write the Y Axis caption if set */
if ($Data->getDataDescription()->getYAxisName() != '') {
$Position = imageftbbox ( $this->FontSize, 90, $this->FontName,
$Data->getDataDescription()->getYAxisName());
$TextHeight = abs ( $Position [1] ) + abs ( $Position [3] );
$TextTop = (($this->GArea_Y2 - $this->GArea_Y1) / 2) + $this->GArea_Y1 + ($TextHeight / 2);
$this->canvas->drawText($this->FontSize,
90,
new Point($XMin - $this->FontSize,
$TextTop),
$style->getColor(),
$this->FontName,
$Data->getDataDescription()->getYAxisName(),
$this->shadowProperties);
}
/* Write the X Axis caption if set */
$this->writeScaleXAxisCaption($Data, $style, $YMax);
}
private function drawGridMosaic(GridStyle $style, $divisionCount, $divisionHeight) {
$LayerHeight = $this->GArea_Y2 - $this->GArea_Y1;
$YPos = $LayerHeight - 1; //$this->GArea_Y2-1;
$LastY = $YPos;
for($i = 0; $i < $divisionCount; $i ++) {
$LastY = $YPos;
$YPos = $YPos - $divisionHeight;
if ($YPos <= 0) {
$YPos = 1;
}
if ($i % 2 == 0) {
$this->canvas->drawFilledRectangle(new Point($this->GArea_X1 + 1,
$this->GArea_Y1 + $YPos),
new Point($this->GArea_X2 - 1,
$this->GArea_Y1 + $LastY),
new Color(250, 250, 250),
ShadowProperties::NoShadow(),
false,
$style->getAlpha());
}
}
}
/**
* Write the X Axis caption on the scale, if set
*/
private function writeScaleXAxisCaption(pData $data, ScaleStyle $style, $YMax) {
if ($data->getDataDescription()->getXAxisName() != '') {
$Position = imageftbbox ( $this->FontSize, 90, $this->FontName, $data->getDataDescription()->getXAxisName());
$TextWidth = abs ( $Position [2] ) + abs ( $Position [0] );
$TextLeft = (($this->GArea_X2 - $this->GArea_X1) / 2) + $this->GArea_X1 + ($TextWidth / 2);
$this->canvas->drawText($this->FontSize,
0,
new Point($TextLeft,
$YMax + $this->FontSize + 5),
$style->getColor(),
$this->FontName,
$data->getDataDescription()->getXAxisName(),
$this->shadowProperties);
}
}
/**
* Compute and draw the scale
*/
function drawGrid(GridStyle $style) {
/* Draw mosaic */
if ($style->getMosaic()) {
$this->drawGridMosaic($style, $this->DivisionCount, $this->DivisionHeight);
}
/* Horizontal lines */
$YPos = $this->GArea_Y2 - $this->DivisionHeight;
for($i = 1; $i <= $this->DivisionCount; $i ++) {
if ($YPos > $this->GArea_Y1 && $YPos < $this->GArea_Y2)
$this->canvas->drawDottedLine(new Point($this->GArea_X1, $YPos),
new Point($this->GArea_X2, $YPos),
$style->getLineWidth(),
$this->LineWidth,
$style->getColor(),
ShadowProperties::NoShadow());
/** @todo There's some inconsistency here. The parameter
* $lineWidth appears to be used to control the dot size,
* not the line width? This is the same way it's always
* been done, although now it's more obvious that there's
* a problem. */
$YPos = $YPos - $this->DivisionHeight;
}
/* Vertical lines */
if ($this->GAreaXOffset == 0) {
$XPos = $this->GArea_X1 + $this->DivisionWidth + $this->GAreaXOffset;
$ColCount = $this->DataCount - 2;
} else {
$XPos = $this->GArea_X1 + $this->GAreaXOffset;
$ColCount = floor ( ($this->GArea_X2 - $this->GArea_X1) / $this->DivisionWidth );
}
for($i = 1; $i <= $ColCount; $i ++) {
if ($XPos > $this->GArea_X1 && $XPos < $this->GArea_X2)
$this->canvas->drawDottedLine(new Point(floor($XPos), $this->GArea_Y1),
new Point(floor($XPos), $this->GArea_Y2),
$style->getLineWidth(),
$this->LineWidth,
$style->getcolor(),
$this->shadowProperties);
$XPos = $XPos + $this->DivisionWidth;
}
}
/**
* retrieve the legends size
*/
public function getLegendBoxSize($DataDescription) {
if (! isset ( $DataDescription->description))
return (- 1);
/* <-10->[8]<-4->Text<-10-> */
$MaxWidth = 0;
$MaxHeight = 8;
foreach ( $DataDescription->description as $Value ) {
$Position = imageftbbox ( $this->FontSize, 0, $this->FontName, $Value );
$TextWidth = $Position [2] - $Position [0];
$TextHeight = $Position [1] - $Position [7];
if ($TextWidth > $MaxWidth) {
$MaxWidth = $TextWidth;
}
$MaxHeight = $MaxHeight + $TextHeight + 4;
}
$MaxHeight = $MaxHeight - 3;
$MaxWidth = $MaxWidth + 32;
return (array ($MaxWidth, $MaxHeight ));
}
/**
* Draw the data legends
*/
public function drawLegend($XPos, $YPos, $DataDescription, Color $color, Color $color2 = null, Color $color3 = null, $Border = TRUE) {
if ($color2 == null) {
$color2 = $color->addRGBIncrement(-30);
}
if ($color3 == null) {
$color3 = new Color(0, 0, 0);
}
/* Validate the Data and DataDescription array */
$this->validateDataDescription("drawLegend", $DataDescription);
if (! isset ( $DataDescription->description))
return (- 1);
/* <-10->[8]<-4->Text<-10-> */
$MaxWidth = 0;
$MaxHeight = 8;
foreach ( $DataDescription->description as $Key => $Value ) {
$Position = imageftbbox ( $this->FontSize, 0, $this->FontName, $Value );
$TextWidth = $Position [2] - $Position [0];
$TextHeight = $Position [1] - $Position [7];
if ($TextWidth > $MaxWidth) {
$MaxWidth = $TextWidth;
}
$MaxHeight = $MaxHeight + $TextHeight + 4;
}
$MaxHeight = $MaxHeight - 5;
$MaxWidth = $MaxWidth + 32;
if ($Border) {
$this->canvas->drawFilledRoundedRectangle(new Point($XPos + 1, $YPos + 1),
new Point($XPos + $MaxWidth + 1,
$YPos + $MaxHeight + 1),
5, $color2,
$this->LineWidth,
$this->LineDotSize,
$this->shadowProperties);
$this->canvas->drawFilledRoundedRectangle(new Point($XPos, $YPos),
new Point($XPos + $MaxWidth,
$YPos + $MaxHeight),
5, $color,
$this->LineWidth,
$this->LineDotSize,
$this->shadowProperties);
}
$YOffset = 4 + $this->FontSize;
$ID = 0;
foreach ( $DataDescription->description as $Key => $Value ) {
$this->canvas->drawFilledRoundedRectangle(new Point($XPos + 10,
$YPos + $YOffset - 4),
new Point($XPos + 14,
$YPos + $YOffset - 4),
2,
$this->palette->colors[$ID],
$this->LineWidth,
$this->LineDotSize,
$this->shadowProperties);
$this->canvas->drawText($this->FontSize,
0,