jpgraph.php

来自「eGroupWare is a multi-user, web-based gr」· PHP 代码 · 共 1,955 行 · 第 1/5 页

	$this->x = $aXAbsPos;
	$this->y = $aYAbsPos;
    }
//---------------
// PUBLIC METHODS	
    // Set the string in the text object
    function Set($aTxt) {
	$this->t = $aTxt;
    }
	
    // Specify the position and alignment for the text object
    function Pos($aXAbsPos=0,$aYAbsPos=0,$aHAlign="left",$aVAlign="top") {
	$this->x = $aXAbsPos;
	$this->y = $aYAbsPos;
	$this->halign = $aHAlign;
	$this->valign = $aVAlign;
    }
	
    // Specify alignment for the text
    function Align($aHAlign,$aVAlign="top") {
	$this->halign = $aHAlign;
	$this->valign = $aVAlign;
    }		

    // Specifies the alignment for a multi line text
    function ParagraphAlign($aAlign) {
	$this->paragraph_align = $aAlign;
    }
	
    // Specify that the text should be boxed. fcolor=frame color, bcolor=border color,
    // $shadow=drop shadow should be added around the text.
    function SetBox($aFrameColor=array(255,255,255),$aBorderColor=array(0,0,0),$aShadow=false) {
	if( $aFrameColor==false )
	    $this->boxed=false;
	else
	    $this->boxed=true;
	$this->fcolor=$aFrameColor;
	$this->bcolor=$aBorderColor;
	$this->shadow=$aShadow;
    }
	
    // Hide the text
    function Hide($aHide=true) {
	$this->hide=$aHide;
    }
	
    // This looks ugly since it's not a very orthogonal design 
    // but I added this "inverse" of Hide() to harmonize
    // with some classes which I designed more recently (especially) 
    // jpgraph_gantt
    function Show($aShow=true) {
	$this->hide=!$aShow;
    }
	
    // Specify font
    function SetFont($aFamily,$aStyle=FS_NORMAL,$aSize=10) {
	$this->font_family=$aFamily;
	$this->font_style=$aStyle;
	$this->font_size=$aSize;
    }
			
    // Center the text between $left and $right coordinates
    function Center($aLeft,$aRight,$aYAbsPos=false) {
	$this->x = $aLeft + ($aRight-$aLeft	)/2;
	$this->halign = "center";
	if( is_numeric($aYAbsPos) )
	    $this->y = $aYAbsPos;		
    }
	
    // Set text color
    function SetColor($aColor) {
	$this->color = $aColor;
    }
	
    // Orientation of text. Note only TTF fonts can have an arbitrary angle
    function SetOrientation($aDirection=0) {
	if( is_numeric($aDirection) )
	    $this->dir=$aDirection;	
	elseif( $aDirection=="h" )
	    $this->dir = 0;
	elseif( $aDirection=="v" )
	    $this->dir = 90;
	else JpGraphError::Raise("<b>JpGraph Error:</b> Invalid direction specified for text.");
    }
	
    // Total width of text
    function GetWidth(&$aImg) {
	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);		
	return $aImg->GetTextWidth($this->t);
    }
	
    // Hight of font
    function GetFontHeight(&$aImg) {
	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);		
	return $aImg->GetFontHeight();
    }

    function GetTextHeight(&$aImg) {
	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);		
	return $aImg->GetTextHeight($this->t);
    }
	
    // Display text in image
    function Stroke(&$aImg,$x=-1,$y=-1) {
	if( $x>-1 ) $this->x = $x;
	if( $y>-1 ) $this->y = $y;

	// If position been given as a fraction of the image size
	// calculate the absolute position
	if( $this->x < 1 ) $this->x *= $aImg->width;
	if( $this->y < 1 ) $this->y *= $aImg->height;

	$aImg->PushColor($this->color);	
	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);
	$aImg->SetTextAlign($this->halign,$this->valign);
	if( $this->boxed ) {
	    if( $this->fcolor=="nofill" ) $this->fcolor=false;		
	    $aImg->StrokeBoxedText($this->x,$this->y,$this->t,
	    $this->dir,$this->fcolor,$this->bcolor,$this->shadow,
	    $this->paragraph_align);
	}
	else {
	    $aImg->StrokeText($this->x,$this->y,$this->t,$this->dir,
	    $this->paragraph_align);
	}
	$aImg->PopColor($this->color);	
    }
} // Class

//===================================================
// CLASS Grid
// Description: responsible for drawing grid lines in graph
//===================================================
class Grid {
    var $img;
    var $scale;
    var $grid_color=array(196,196,196);
    var $type="solid";
    var $show=false, $showMinor=false,$weight=1;
//---------------
// CONSTRUCTOR
    function Grid(&$aAxis) {
	$this->scale = &$aAxis->scale;
	$this->img = &$aAxis->img;
    }
//---------------
// PUBLIC METHODS
    function SetColor($aColor) {
	$this->grid_color=$aColor;
    }
	
    function SetWeight($aWeight) {
	$this->weight=$aWeight;
    }
	
    // Specify if grid should be dashed, dotted or solid
    function SetLineStyle($aType) {
	$this->type = $aType;
    }
	
    // Decide if both major and minor grid should be displayed
    function Show($aShowMajor=true,$aShowMinor=false) {
	$this->show=$aShowMajor;
	$this->showMinor=$aShowMinor;
    }
	
    // Display the grid
    function Stroke() {
	if( $this->showMinor ) 
	    $this->DoStroke($this->scale->ticks->ticks_pos);
	else
	    $this->DoStroke($this->scale->ticks->maj_ticks_pos);
    }
	
//--------------
// Private methods	
    // Draw the grid
    function DoStroke(&$aTicksPos) {
	if( !$this->show )
	    return;	
	$this->img->SetColor($this->grid_color);
	$this->img->SetLineWeight($this->weight);
	$nbrgrids = count($aTicksPos);					
	if( $this->scale->type=="y" ) {
	    $xl=$this->img->left_margin;
	    $xr=$this->img->width-$this->img->right_margin;
	    for($i=0; $i<$nbrgrids; ++$i) {
		$y=$aTicksPos[$i];
		if( $this->type == "solid" )
		    $this->img->Line($xl,$y,$xr,$y);
		elseif( $this->type == "dotted" )
		    $this->img->DashedLine($xl,$y,$xr,$y,1,6);
		elseif( $this->type == "dashed" )
		    $this->img->DashedLine($xl,$y,$xr,$y,2,4);
		elseif( $this->type == "longdashed" )
		    $this->img->DashedLine($xl,$y,$xr,$y,8,6);
	    }
	}
				
	if( $this->scale->type=="x" ) {	
	    $yu=$this->img->top_margin;
	    $yl=$this->img->height-$this->img->bottom_margin;
	    $x=$aTicksPos[0];
	    $limit=$this->img->width-$this->img->right_margin;
	    $i=0;
	    // We must also test for limit since we might have
	    // an offset and the number of ticks is calculated with
	    // assumption offset==0 so we might end up drawing one
	    // to many gridlines
	    while( $x<=$limit && $i<count($aTicksPos)) {
		$x=$aTicksPos[$i];
		if( $this->type == "solid" )				
		    $this->img->Line($x,$yl,$x,$yu);
		elseif( $this->type == "dotted" )
		    $this->img->DashedLine($x,$yl,$x,$yu,1,6);
		elseif( $this->type == "dashed" )
		    $this->img->DashedLine($x,$yl,$x,$yu,2,4);
		elseif( $this->type == "longdashed" )
		    $this->img->DashedLine($x,$yl,$x,$yu,8,6);									
		++$i;									
	    }
	}		
	return true;
    }
} // Class

//===================================================
// CLASS Axis
// Description: Defines X and Y axis. Notes that at the
// moment the code is not really good since the axis on
// several occasion must know wheter it's an X or Y axis.
// This was a design decision to make the code easier to
// follow. 
//===================================================
class Axis {
    var $pos = false;
    var $weight=1;
    var $color=array(0,0,0),$label_color=array(0,0,0);
    var $img=null,$scale=null; 
    var $hide=false;
    var $ticks_label=false;
    var $show_first_label=true;
    var $label_step=1; // Used by a text axis to specify what multiple of major steps
    // should be labeled.
    var $tick_step=1;
    var $labelPos=0;   // Which side of the axis should the labels be?
    var $title=null,$title_adjust,$title_margin,$title_side=SIDE_LEFT;
    var $font_family=FF_FONT1,$font_style=FS_NORMAL,$font_size=12,$label_angle=0;
    var $tick_label_margin=6;
//---------------
// CONSTRUCTOR
    function Axis(&$img,&$aScale,$color=array(0,0,0)) {
	$this->img = &$img;
	$this->scale = &$aScale;
	$this->color = $color;
	$this->title=new Text("");
		
	if( $aScale->type=="y" ) {
	    $this->title_margin = 25;
	    $this->title_adjust="middle";
	    $this->title->SetOrientation(90);
	    $this->tick_label_margin=6;
	}
	else {
	    $this->title_margin = 5;
	    $this->title_adjust="high";
	    $this->title->SetOrientation(0);			
	    $this->tick_label_margin=3;
	}
    }
//---------------
// PUBLIC METHODS	

    // Utility function to set the direction for tick marks
    function SetTickDirection($aDir) {
	$this->scale->ticks->SetDirection($aDir);
    }
	
    function SetLabelFormatString($aFormStr) {
	$this->scale->ticks->SetLabelFormat($aFormStr);
    }
	
    function SetLabelFormatCallback($aFuncName) {
	$this->scale->ticks->SetFormatCallback($aFuncName);
    }

    // Don't display the first label
    function HideFirstTickLabel($aHide=false) {
	$this->show_first_label=$aHide;
    }
	
    // Hide the axis
    function Hide($aHide=true) {
	$this->hide=$aHide;
    }

    // Weight of axis
    function SetWeight($aWeight) {
	$this->weight = $aWeight;
    }

    // Axis color
    function SetColor($aColor,$aLabelColor=false) {
	$this->color = $aColor;
	if( !$aLabelColor ) $this->label_color = $aColor;
	else $this->label_color = $aLabelColor;
    }
	
    // Title on axis
    function SetTitle($aTitle,$aAdjustAlign="high") {
	$this->title->Set($aTitle);
	$this->title_adjust=$aAdjustAlign;
    }
	
    // Specify distance from the axis
    function SetTitleMargin($aMargin) {
	$this->title_margin=$aMargin;
    }
	
    // Specify text labels for the ticks. One label for each data point
    function SetTickLabels($aLabelArray) {
	$this->ticks_label = $aLabelArray;
    }
	
    // How far from the axis should the labels be drawn
    function SetTickLabelMargin($aMargin) {
	$this->tick_label_margin=$aMargin;
    }
	
    // Specify that every $step of the ticks should be displayed starting
    // at $start
    // DEPRECATED FUNCTION: USE SetTextTickInterval() INSTEAD
    function SetTextTicks($step,$start=0) {
	JpGraphError::Raise("<b>JpGraph Error:</b> SetTextTicks() is deprecated. Use SetTextTickInterval() instead.");		
    }

    // Specify that every $step of the ticks should be displayed starting
    // at $start	
    function SetTextTickInterval($aStep,$aStart=0) {
	$this->scale->ticks->SetTextLabelStart($aStart);
	$this->tick_step=$aStep;
    }
	
    // Specify that every $step tick mark should have a label 
    // should be displayed starting
    function SetTextLabelInterval($aStep) {
	if( $aStep < 1 )
	    JpGraphError::Raise("<b>JpGraph Error:</b> Text label interval must be specified >= 1.");
	$this->label_step=$aStep;
    }
	
	
    // Which side of the axis should the labels be on?
    function SetLabelPos($aSidePos) {
	$this->labelPos=$aSidePos;
    }
	
    // Set the font
    function SetFont($aFamily,$aStyle=FS_NORMAL,$aSize=10) {
	$this->font_family = $aFamily;
	$this->font_style = $aStyle;
	$this->font_size = $aSize;
    }
	
    // Which side of the axis should the axis title be?
    function SetTitleSide($aSideOfAxis) {
	$this->title_side = $aSideOfAxis;
    }
	
    // Stroke the axis.
    function Stroke($aOtherAxisScale) {		
	if( $this->hide ) return;		
	if( is_numeric($this->pos) ) {
	    $pos=$aOtherAxisScale->Translate($this->pos);
	}
	else {	// Default to minimum of other scale if pos not set
	    if( $aOtherAxisScale->GetMinVal() >= 0 || $this->pos=="min" ) {
		$pos = $aOtherAxisScale->scale_abs[0];
	    }
	    else { // If negative set x-axis at 0
		$this->pos=0;
		$pos=$aOtherAxisScale->Translate(0);
	    }
	}	
	$this->img->SetLineWeight($this->weight);
	$this->img->SetColor($this->color);		
	$this->img->SetFont($this->font_family,$this->font_style,$this->font_size);
	if( $this->scale->type == "x" ) {
	    $this->img->FilledRectangle($this->img->left_margin,$pos,
	    $this->img->width-$this->img->right_margin,$pos+$this->weight-1);
	    $y=$pos+$this->img->GetFontHeight()+$this->title_margin;