Added theme support. Oh yeah, you can customize graphs using graph_{line,bar}.def.
<?php
class CGraph {
var $data = array();
//---------------------------------------------
var $graph_areaheight = 100;
var $graph_areawidth = 50;
var $graph_padding = array('left' => 50, 'top' => 20, 'right' => 20, 'bottom' => 20);
var $graph_title = "";
var $graph_titlefont = 3;
var $graph_bgcolor = array(255, 255, 255);
var $graph_bgtransparent = false;
var $graph_transparencylevel = 0;
var $graph_borderwidth = 1;
var $graph_bordercolor = array(218, 218, 239);
var $graph_titlecolor = array(99, 88, 78);
//---------------------------------------------
var $axis_stepX = 1;
var $axis_stepY = 1;
var $axis_stepSize = 3;
var $axis_deepness = 0;
var $axis_maxX = 0;
var $axis_minX = 0;
var $axis_maxY = 0;
var $axis_minY = 0;
var $axis_bordercolor = array(99, 88, 78);
var $axis_bgcolor = array(152, 137, 124);
var $axis_scalefont = 2;
var $axis_scalecolor = array(0, 0, 255);
var $axis_xscalevisible = true;
var $axis_yscalevisible = true;
var $axis_gridlines = true;
var $axis_frontgridlines = true;
var $axis_positions = array(true, false, false, true);
var $axis_modeX = 0; // 0=diference between steps 1=number of steps
var $axis_modeY = 0; // 0=diference between steps 1=number of steps
//---------------------------------------------
var $scale_roundX = 1;
var $scale_roundY = 1;
var $scale_funX = "";
var $scale_funY = "";
//---------------------------------------------
var $legend_visible = false;
var $legend_floating = false;
var $legend_borderwidth = 1;
var $legend_bgcolor = array(255, 255, 255);
var $legend_bordercolor = array(0, 0, 0);
var $legend_width = 0;
var $legend_height = 0;
var $legend_padding = 30;
var $legend_insidepadding = 3;
var $legend_font = 1;
var $legend_position = 3; // 1=bottom left | 2=top left | 3=top right | 4=bottom right
var $legend_color = array(array(0, 0, 255));
var $legend_data = array("Item 1");
function CGraph() {
//nothing @ the moment.. maybe later will set image at startup
}
/****************************************************************
GRAPH
****************************************************************/
function SetGraphAreaHeight($height) {
if ($height > 0) {
$this->graph_areaheight = $height;
$this->graph_height = $this->graph_padding['top'] + $height + $this->graph_padding['bottom'];
}
}
function SetGraphAreaWidth($width) {
if ($width > 0) {
$this->graph_areawidth = $width;
$this->graph_width = $this->graph_padding['left'] + $width + $this->graph_padding['right'];
}
}
function SetGraphPadding($left, $top, $right, $bottom) {
$this->graph_padding = array('left' => (int)$left, 'top' => (int)$top, 'right' => (int)$right, 'bottom' => (int)$bottom);
}
function SetGraphTitle($title) {
$this->graph_title = $title;
}
function SetGraphTitleFont($font) {
$this->graph_titlefont = 0;
switch ($font) {
case 'x-large': $this->graph_titlefont++;
case 'large': $this->graph_titlefont++;
case 'medium': $this->graph_titlefont++;
case 'small': $this->graph_titlefont++;
case 'x-small': $this->graph_titlefont++; break;
default:
$this->graph_titlefont = $font;
}
}
function SetGraphTitleColor($red, $green, $blue) {
$this->graph_titlecolor = array($red, $green, $blue);
}
function SetGraphBorderColor($red, $green, $blue) {
$this->graph_bordercolor = array($red, $green, $blue);
}
function SetGraphBorderWidth($width = 0) {
$this->graph_borderwidth = $width;
}
function SetGraphBackgroundColor($red, $green, $blue) {
$this->graph_bgcolor = array($red, $green, $blue);
}
function SetGraphBackgroundTransparent($addtransparency = true, $red = 255, $green = 0, $blue = 255) {
$this->graph_bgcolor = array($red, $green, $blue);
$this->graph_bgtransparent = ($addtransparency ? true : false);
}
function SetGraphTransparency($percent) {
if ($percent < 0) $percent = 0;
elseif ($percent > 100) $percent = 127;
else $percent = $percent * 1.27;
$this->graph_transparencylevel = $percent;
}
/****************************************************************
AXIS
****************************************************************/
function SetAxisBorderColor($red, $green, $blue) {
$this->axis_bordercolor = array($red, $green, $blue);
}
function SetAxisBackgroundColor($red, $green, $blue) {
$this->axis_bgcolor = array($red, $green, $blue);
}
function SetAxisScaleColor($red, $green, $blue) {
$this->axis_scalecolor = array($red, $green, $blue);
}
function SetAxisStepX($step) {
if ($step > 0) $this->axis_stepX = $step;
}
function SetAxisStepY($step) {
if ($step > 0) $this->axis_stepY = $step;
}
function SetAxisStepSize($size) {
$this->axis_stepSize = (int) $size;
}
function SetAxisScaleXVisibility($state) {
$this->axis_xscalevisible = ($state ? true : false);
}
function SetAxisScaleYVisibility($state) {
$this->axis_yscalevisible = ($state ? true : false);
}
function SetAxisModeX($mode) {
switch ($mode) {
case '0':
case 'value':
$this->axis_modeX = 0; break;
case '1':
case 'dynamic':
$this->axis_modeX = 1; break;
case '2':
case 'pixel':
$this->axis_modeX = 2; break;
}
}
function SetAxisModeY($mode) {
switch ($mode) {
case '0':
case 'value':
$this->axis_modeY = 0; break;
case '1':
case 'dynamic':
$this->axis_modeY = 1; break;
case '2':
case 'pixel':
$this->axis_modeY = 2; break;
}
}
function SetAxisDeepness($deepness) {
$this->axis_deepness = (int) $deepness;
}
function SetAxisScaleFont($font) {
$this->axis_scalefont = 0;
switch ($font) {
case 'x-large': $this->axis_scalefont++;
case 'large': $this->axis_scalefont++;
case 'medium': $this->axis_scalefont++;
case 'small': $this->axis_scalefont++;
case 'x-small': $this->axis_scalefont++; break;
default:
$this->axis_scalefont = $font;
}
}
function SetAxisPositions($positions) {
$positions = explode(",", strtolower($positions));
$this->axis_positions = array(0, 0, 0, 0);
for ($i = 0; $i < count($positions); $i++) {
if ($positions[$i][0] == '-') {
$v = false;
$positions[$i] = substr($positions[$i], 1);
} else $v = true;
switch ($positions[$i]) {
case 'all': $this->axis_positions = array($v, $v, $v, $v); break;
case 'left': $this->axis_positions[0] = $v; break;
case 'top': $this->axis_positions[1] = $v; break;
case 'right': $this->axis_positions[2] = $v; break;
case 'bottom': $this->axis_positions[3] = $v; break;
}
}
}
function SetAxisGridlines($state) {
$this->axis_gridlines = ($state ? true : false);
}
function SetAxisFrontGridlines($state) {
$this->axis_frontgridlines = ($state ? true : false);
}
/****************************************************************
SCALE
****************************************************************/
function SetScaleRoundX($number) {
if ($number < 0) $number = 0;
$this->scale_roundX = (int) $number;
}
function SetScaleRoundY($number) {
if ($number < 0) $number = 0;
$this->scale_roundY = (int) $number;
}
function SetScaleFunctionX($name) {
$this->scale_funX = $name;
}
function SetScaleFunctionY($name) {
$this->scale_funY = $name;
}
/****************************************************************
LEGEND
****************************************************************/
function SetLegendVisible($visible) {
$this->legend_visible = ($visible ? true : false);
}
function SetLegendFloating($floating) {
$this->legend_floating = ($floating ? true : false);
}
function SetLegendBackgroundColor($red, $green, $blue) {
$this->legend_bgcolor = array($red, $green, $blue);
}
function SetLegendBorderColor($red, $green, $blue) {
$this->legend_bordercolor = array($red, $green, $blue);
}
function SetLegendBorderWidth($width = 0) {
$this->legend_borderwidth = $width;
}
function SetLegendColors($colors) {
$this->__SetColorToValue("legend_color", $colors);
}
function SetLegendPadding($padding = 0) {
$this->legend_padding = $padding;
}
function SetLegendInsidePadding($padding = 0) {
$this->legend_insidepadding = $padding;
}
function SetLegendPosition($position) {
switch ($position) {
case 1:
case 'bottom left':
$this->legend_position = 1; break;
case 2:
case 'top left':
$this->legend_position = 2; break;
case 3:
case 'top right':
$this->legend_position = 3; break;
case 4:
case 'bottom right':
$this->legend_position = 4; break;
}
}
function SetLegendData($data) {
if (is_array($data)) {
$this->legend_data = $data;
}
}
function SetLegentFont($font) {
$this->legend_font = 0;
switch ($font) {
case 'x-large': $this->legend_font++;
case 'large': $this->legend_font++;
case 'medium': $this->legend_font++;
case 'small': $this->legend_font++;
case 'x-small': $this->legend_font++; break;
default:
$this->legend_font = $font;
}
}
/****************************************************************
DATA
****************************************************************/
function SetData($data) {
if (is_array($data)) {
$this->data = $data;
}
}
function LoadGraph($path) {
if (($fp = @fopen($path, "r")) !== false) {
$content = "";
while (!feof($fp)) { // I do not use filesize() here
$content .= fread($fp, 4096); // because of remote files. If
} // there is no problem with them
fclose($fp); // please let me know
$this->__LoadGraphDefinitions($content);
return true;
} else return false;
}
function DrawGraph() {
if ($this->graph_transparencylevel) {
imagealphablending($this->im, true);
}
if ($this->legend_visible) {
$maxlength = 0;
for ($i = 0; $i < count($this->legend_data); $i++) {
if (strlen($this->legend_data[$i]) > $maxlength) $maxlength = strlen($this->legend_data[$i]);
}
$this->legend_width = ($this->legend_insidepadding * 4) + ($maxlength * imagefontwidth($this->legend_font));
if (!$this->legend_floating) {
$this->graph_padding[($this->legend_position < 3 ? 'left' : 'right')] += $this->legend_padding + $this->legend_width;
$this->graph_areawidth -= ($this->legend_padding + $this->legend_width);
}
}
$this->__PaintBackground();
$this->__DrawAxis();
}
function DrawGraph2() {
if (strlen($this->graph_title)) {
$this->__AllocateColor("im_graph_titlecolor",
$this->graph_titlecolor,
$this->graph_transparencylevel);
$this->__DrawText($this->graph_title,
floor($this->graph_width / 2),
floor(($this->graph_padding['top'] - $this->axis_deepness - imagefontwidth($this->graph_titlefont)) / 2),
$this->im_graph_titlecolor,
$this->graph_titlefont,
1);
}
$this->__DrawLegend();
}
function __PaintBackground() {
$this->__AllocateColor("im_graph_bgcolor",
$this->graph_bgcolor,
0);
if ($this->graph_bgtransparent) {
imagecolortransparent($this->im, $this->im_graph_bgcolor);
}
imagefilledrectangle($this->im, 0, 0, $this->graph_width, $this->graph_height, $this->im_graph_bgcolor);
if ($this->graph_borderwidth) {
$this->__AllocateColor("im_graph_bordercolor",
$this->graph_bordercolor,
$this->graph_transparencylevel);
for ($i = 0; $i < $this->graph_borderwidth; $i++) {
imagerectangle($this->im,
$i,
$i,
$this->graph_width - 1 - $i,
$this->graph_height - 1 - $i,
$this->im_graph_bordercolor);
}
}
}
function __DrawAxis() {
$this->__AllocateColor("im_axis_bordercolor",
$this->axis_bordercolor,
$this->graph_transparencylevel);
$this->__AllocateColor("im_axis_bgcolor",
$this->axis_bgcolor,
$this->graph_transparencylevel);
$this->__AllocateColor("im_axis_scalecolor",
$this->axis_scalecolor,
$this->graph_transparencylevel);
list($this->axis_minX,
$this->axis_maxX,
$this->axis_minY,
$this->axis_maxY) = $this->__GetMinMaxGraphValue();
if ($this->axis_gridlines) {
$style = array($this->im_axis_bordercolor, $this->im_graph_bgcolor);
imagesetstyle($this->im, $style);
}
if ($this->axis_modeX == 1) {
$this->axis_stepX = ($this->axis_maxX - $this->axis_minX) / $this->axis_stepX;
} elseif ($this->axis_modeX == 2) {
$this->axis_stepX = $this->axis_stepX * ($this->axis_maxX - $this->axis_minX) / $this->graph_areawidth;
}
if ($this->axis_modeY == 1) {
$this->axis_stepY = ($this->axis_maxY - $this->axis_minY) / $this->axis_stepY;
} elseif ($this->axis_modeY == 2) {
$this->axis_stepY = $this->axis_stepY * ($this->axis_maxY - $this->axis_minY) / $this->graph_areaheight;
$rest = abs($this->axis_maxY) % $this->axis_stepY;
// need to center a step on coord 0
}
if (!$this->axis_deepness) {
$this->axis_frontgridlines = 1;
}
if (!$this->axis_xscalevisible) {
$this->axis_positions[1] = 0;
$this->axis_positions[3] = 0;
}
if (!$this->axis_yscalevisible) {
$this->axis_positions[0] = 0;
$this->axis_positions[2] = 0;
}
$this->__CorrectMinMax($this->axis_minX, $this->axis_maxX, $this->axis_stepX);
$this->__CorrectMinMax($this->axis_minY, $this->axis_maxY, $this->axis_stepY);
if ($this->axis_yscalevisible) {
$this->__DrawHorizontalGridlines();
}
$this->__DrawHorizontalGideGridlines();
if ($this->axis_xscalevisible) {
$this->__DrawVerticalGridlines();
}
$this->__DrawVerticalGideGridlines();
// draw lines that separate bars
$total_bars = count($this->data);
if ( min($this->data) >= 0 && get_class($this) == 'BarGraph' )
{
$totalbarwidth = $this->bar_width + ($this->bar_padding * 2);
for ($i = 0; $i < $total_bars; $i++) {
$offset = $this->graph_padding['left'] +
($totalbarwidth * $i);
$this->__DrawPolygon(
array(
$offset + $totalbarwidth, $this->graph_height - $this->graph_padding['bottom'], // top right
$offset, $this->graph_height - $this->graph_padding['bottom'], // top left
$offset + $this->bar_height, $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height, // bottom left
$offset + $this->bar_height + $totalbarwidth, $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height), // bottom right
$this->im_axis_bgcolor, true);
imageline($this->im,
$offset, $this->graph_height - $this->graph_padding['bottom'],
$offset + $this->bar_height - 1, $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height + 1,
$this->im_axis_bordercolor);
}
}
}
function __Draw_LeftBottom_Axis() {
$w = $this->graph_width;
$h = $this->graph_height;
$p = $this->graph_padding;
if ($this->axis_positions[3]) {
$this->__DrawAxisPart($p['left'], $h - $p['bottom'], $w - $p['right'], $h - $p['bottom'],
$this->axis_minX, $this->axis_maxX, $this->axis_stepX,
"right", "bottom");
}
if ($this->axis_positions[0]) {
$this->__DrawAxisPart($p['left'], $p['top'], $p['left'], $h - $p['bottom'],
$this->axis_minY, $this->axis_maxY, $this->axis_stepY,
"up", "left");
}
}
function __Draw_TopRight_Axis() {
$w = $this->graph_width;
$h = $this->graph_height;
$p = $this->graph_padding;
if ($this->axis_positions[1]) {
$this->__DrawAxisPart($p['left'], $p['top'], $w - $p['right'], $p['top'],
$this->axis_minX, $this->axis_maxX, $this->axis_stepX,
"right", "top");
}
if ($this->axis_positions[2]) {
$this->__DrawAxisPart($w - $p['right'], $p['top'], $w - $p['right'], $h - $p['bottom'],
$this->axis_minY, $this->axis_maxY, $this->axis_stepY,
"up", "right");
}
}
function __CorrectMinMax(&$min, &$max, &$step) {
if (($max % $step) != 0) $max += ($step - abs($max % $step));
if (($min % $step) != 0) $min -= abs($min % $step);
}
function __DrawHorizontalGridlines() {
$maxy = $this->graph_height - $this->graph_padding['bottom'];
$miny = $this->graph_padding['top'];
$maxx = $this->graph_width - $this->graph_padding['right'];
$minx = $this->graph_padding['left'];
$offset = ($maxy - $miny) / ($this->axis_maxY - $this->axis_minY) * $this->axis_stepY;
$v = $miny + $offset;
$deep = $this->axis_deepness;
if (!$deep) $grid_offset = $this->axis_stepSize;
else $grid_offset = 1;
while ($v < $maxy) {
imageline($this->im, $minx + $deep + (!$this->axis_positions[0] ? 0 : $grid_offset),
floor($v) - $deep,
$maxx + $deep - (!$this->axis_positions[2] ? 0 : $grid_offset),
floor($v) - $deep, IMG_COLOR_STYLED);
$v += $offset;
}
}
function __DrawHorizontalGideGridlines() {
$maxy = $this->graph_height - $this->graph_padding['bottom'];
$miny = $this->graph_padding['top'];
$maxx = $this->graph_width - $this->graph_padding['right'];
$minx = $this->graph_padding['left'];
$deep = $this->axis_deepness;
if (!$deep) $grid_offset = $this->axis_stepSize;
else $grid_offset = 1;
if (!$this->axis_positions[1]) {
if ($deep) {
imageline($this->im, $minx + $deep + $grid_offset, $miny - $deep,
$maxx + $deep + $grid_offset, $miny - $deep, IMG_COLOR_STYLED);
}
if ($this->axis_frontgridlines) {
imageline($this->im, $minx, $miny, $maxx, $miny, IMG_COLOR_STYLED);
}
}
if (!$this->axis_positions[3]) {
if ($deep) {
imageline($this->im, $minx + $deep + $grid_offset, $maxy - $deep,
$maxx + $deep + $grid_offset, $maxy - $deep, IMG_COLOR_STYLED);
}
if ($this->axis_frontgridlines) {
imageline($this->im, $minx, $maxy, $maxx, $maxy, IMG_COLOR_STYLED);
}
}
}
function __DrawVerticalGridlines() {
$maxy = $this->graph_height - $this->graph_padding['bottom'];
$miny = $this->graph_padding['top'];
$maxx = $this->graph_width - $this->graph_padding['right'];
$minx = $this->graph_padding['left'];
if ( $this->axis_maxX == 0 )
$this->axis_maxX = 1;
$offset = ($maxx - $minx) / ($this->axis_maxX - $this->axis_minX) * $this->axis_stepX;
$v = $minx + $offset;
$deep = $this->axis_deepness;
if (!$deep) $grid_offset = $this->axis_stepSize;
else $grid_offset = 1;
while ($v < $maxx) {
imageline($this->im, floor($v) + $deep,
$miny - $deep + (!$this->axis_positions[1] ? 0 : $grid_offset),
floor($v) + $deep,
$maxy - $deep - (!$this->axis_positions[3] ? 0 : $grid_offset),
IMG_COLOR_STYLED);
$v += $offset;
}
}
function __DrawVerticalGideGridlines() {
$maxy = $this->graph_height - $this->graph_padding['bottom'];
$miny = $this->graph_padding['top'];
$maxx = $this->graph_width - $this->graph_padding['right'];
$minx = $this->graph_padding['left'];
$deep = $this->axis_deepness;
if (!$deep) $grid_offset = $this->axis_stepSize;
else $grid_offset = 1;
if (!$this->axis_positions[0]) {
if ($deep) {
imageline($this->im, $minx + $deep + $grid_offset, $miny - $deep,
$minx + $deep + $grid_offset, $maxy - $deep, IMG_COLOR_STYLED);
}
if ($this->axis_frontgridlines) {
imageline($this->im, $minx, $miny, $minx, $maxy, IMG_COLOR_STYLED);
}
}
if (!$this->axis_positions[2]) {
if ($deep) {
imageline($this->im, $maxx + $deep + $grid_offset, $miny - $deep,
$maxx + $deep + $grid_offset, $maxy - $deep, IMG_COLOR_STYLED);
}
if ($this->axis_frontgridlines) {
imageline($this->im, $maxx, $miny, $maxx, $maxy, IMG_COLOR_STYLED);
}
}
}
function __DrawAxisPart($x1, $y1, $x2, $y2, $scale_start, $scale_end, $scale_step, $scale_direction, $scaletext_side) {
$deep = $this->axis_deepness;
if ($deep > 0) {
$this->__DrawPolygon(array($x1, $y1, $x1 + $deep, $y1 - $deep, $x2 + $deep, $y2 - $deep, $x2, $y2), $this->im_axis_bgcolor, true);
$this->__DrawPolygon(array($x1, $y1, $x1 + $deep, $y1 - $deep, $x2 + $deep, $y2 - $deep, $x2, $y2), $this->im_axis_bordercolor);
} else {
imageline($this->im, $x1, $y1, $x2, $y2, $this->im_axis_bordercolor);
}
// reverse order if needed
if ($x1 == $x2) {
if ($scale_direction == "up") {
$scale_direction = "down";
$v = $scale_start;
$scale_start = $scale_end;
$scale_end = $v;
$scale_step = -$scale_step;
} else $scale_direction = "down";
if ($scaletext_side != "left") $scaletext_side = "right";
} else {
if ($scale_direction == "left") {
$scale_direction = "right";
$v = $scale_start;
$scale_start = $scale_end;
$scale_end = $v;
$scale_step = -$scale_step;
} else $scale_direction = "right";
if ($scaletext_side != "top") $scaletext_side = "bottom";
}
$v = $scale_start;
$total = $scale_end - $v;
if ($x1 == $x2) {
$totalarea = $this->graph_areaheight;
} else {
$totalarea = $this->graph_areawidth;
}
$akeys = array_keys($this->data);
while (($v <= $scale_end && $scale_step > 0) || ($v >= $scale_end && $scale_step < 0)) {
if ($x1 == $x2) {
$offset = ceil($y1 + (($v - $scale_start) * $totalarea / $total));
if (strlen($this->scale_funY)) {
$fun = str_replace("%d", $v, $this->scale_funY);
eval("\$scale_value = " . $fun . ";");
} else {
$scale_value = $this->__RoundNumber($v, $this->scale_roundY);
}
// vertical axis scale text
$this->__DrawText($scale_value, $x1 + ($scaletext_side == "left" ? -6 : 6 + $deep),
$offset, $this->im_axis_scalecolor, $this->axis_scalefont,
($scaletext_side == "left" ? 2 : 0), 1);
if ($v != $scale_start && $v != $scale_end) {
// vertical axis scale line
imageline($this->im, $x1 + ($scaletext_side == "left" ? 1 : -1), $offset,
$x1 + ($scaletext_side == "left" ? $this->axis_stepSize : -$this->axis_stepSize),
$offset - $this->axis_stepSize + ($scaletext_side == "left" ? 1 : -1), $this->im_axis_bordercolor);
}
} else {
$offset = floor($x1 + (($v - $scale_start) * $totalarea / $total));
if (function_exists($this->scale_funX)) {
$fun = $this->scale_funX;
$scale_value = $fun($v, $this);
} else {
$use_int = true;
if ( isset($akeys[$v]) )
if ( is_string($akeys[$v]) && !ctype_digit($akeys[$v]) )
$use_int = false;
$scale_value = $use_int ? $this->__RoundNumber($v, $this->scale_roundX) : $akeys[$v];
}
// horizontal axis scale text
$this->__DrawText($scale_value, $offset, $y1 + ($scaletext_side == "top" ? -6 - $deep : 6),
$this->im_axis_scalecolor, $this->axis_scalefont, 1,
($scaletext_side == "top" ? 2 : 0));
if ($v != $scale_start && $v != $scale_end) {
// horizontal axis scale line
imageline($this->im, $offset, $y1 + ($scaletext_side == "top" ? 1 : -1),
$offset,
$y1 + ($scaletext_side == "top" ? $this->axis_stepSize : -$this->axis_stepSize),
$this->im_axis_bordercolor);
}
}
$v += $scale_step;
}
}
function __DrawText($text, $x, $y, $color, $size = 1, $align = 0, $valign = 0) {
/* Align: 0=left | 1=center | 2=right */
if ($align == 1) $x -= floor(strlen($text) * imagefontwidth($size) / 2);
elseif ($align == 2) $x -= (strlen($text) * imagefontwidth($size));
if ($valign == 1) $y -= floor(imagefontheight($size) / 2);
elseif ($valign == 2) $y -= imagefontheight($size);
imagestring($this->im, $size, $x, $y, $text, $color);
}
function __GetMinMaxGraphValue() {
$arrki = array_keys($this->data);
if (is_array($this->data[$arrki[0]])) {
for ($i = 0; $i < count($arrki); $i++) {
$arrkj = array_keys($this->data[$arrki[$i]]);
if ($i == 0) {
$maxX = $minX = (int) $arrkj[0];
$maxY = $minY = (int) $this->data[$arrki[0]][$arrkj[0]];
}
for ($j = 0; $j < count($arrkj); $j++) {
if ($arrkj[$j] > $maxX) $maxX = $arrkj[$j];
elseif ($arrkj[$j] < $minX) $minX = $arrkj[$j];
if ($this->data[$arrki[$i]][$arrkj[$j]] > $maxY) $maxY = $this->data[$arrki[$i]][$arrkj[$j]];
elseif ($this->data[$arrki[$i]][$arrkj[$j]] < $minY) $minY = $this->data[$arrki[$i]][$arrkj[$j]];
}
}
} else {
$maxY = $minY = (int) $this->data[$arrki[0]];
foreach ($this->data as $x => $y) {
if ($y > $maxY) $maxY = $y;
elseif ($y < $minY) $minY = $y;
}
$minX = 0;
$maxX = count($this->data);
}
if ( $maxY == 0 )
{
$maxY = 10;
}
return array($minX, $maxX, $minY, $maxY);
}
function __DrawPolygon($points, $color, $filled = false) {
if ($filled) {
imagefilledpolygon($this->im, $points, 4, $color);
} else {
imagepolygon($this->im, $points, 4, $color);
}
}
function __LoadGraphDefinitions($text) {
$text = preg_split("/\r?\n/", $text);
$data = array();
$section = '';
for ($i = 0; $i < count($text); $i++) {
if (preg_match("/^\s*#/", $text[$i])) {
//ignore.. it's just a comment
} elseif (preg_match("/^\s*\}\s*/", $text[$i])) {
$section = '';
} elseif (preg_match("/^\s*(\w+)\s*\{\s*$/", $text[$i], $r)) {
$section = $r[1];
$index = -1;
} elseif (preg_match("/^\s*\-\s*$/", $text[$i]) && strlen($section)) {
$index++;
} else {
$p = strpos($text[$i], "=");
if ($p !== false) {
$k = trim(substr($text[$i], 0, $p));
$v = trim(substr($text[$i], $p + 1));
if ($index >= 0) {
$data[$section][$index][$k] = $v;
} else {
if (preg_match("/^\s*\[(.*)\]\s*$/", $v, $r)) {
// array
$data[$section][$k] = explode(";", $r[1]);
} else {
$data[$section][$k] = $v;
}
}
}
}
}
foreach ($data as $key => $settings) {
$func = "__Load" . ucfirst($key) . "Values";
if (method_exists($this, $func)) {
$this->$func($settings);
}
}
if (isset($data['data']) && is_array($data['data'])) {
$this->data = $data['data'];
}
}
function __LoadGraphValues($data) {
foreach ($data as $name => $value) {
$name = strtolower($name);
switch ($name) {
case 'background-color':
$this->__SetColorToValue("graph_bgcolor", $value);
break;
case 'border-color':
$this->__SetColorToValue("graph_bordercolor", $value);
break;
case 'title-color':
$this->__SetColorToValue("graph_titlecolor", $value);
break;
case 'background-transparent':
$this->graph_bgtransparent = ($value == 1 || $value == 'yes' ? 1 : 0);
break;
case 'transparency':
$this->SetGraphTransparency(str_replace('%', '', $value));
break;
case 'title':
$this->graph_title = $value;
break;
case 'title-font':
$this->SetGraphTitleFont($value);
break;
case 'border-width':
$this->graph_borderwidth = (int) $value;
break;
case 'area-height':
$this->graph_areaheight = (int) $value;
$this->graph_height = $this->graph_padding['top'] + (int)$value + $this->graph_padding['bottom'];
break;
case 'area-width':
$this->graph_areawidth = (int) $value;
$this->graph_width = $this->graph_padding['left'] + (int)$value + $this->graph_padding['right'];
break;
default:
if (substr($name, 0, 8) == 'padding-' && strlen($name) > 8) {
$this->graph_padding[substr($name, 8)] = $value;
}
}
}
}
function __LoadAxisValues($data) {
foreach ($data as $name => $value) {
$name = strtolower($name);
switch ($name) {
case 'x-step':
$this->SetAxisStepX($value);
break;
case 'y-step':
$this->SetAxisStepY($value);
break;
case 'step-size':
$this->axis_stepSize = (int) $value;
break;
case 'x-step-mode':
$this->SetAxisModeX($value);
break;
case 'y-step-mode':
$this->SetAxisModeY($value);
break;
case 'background-color':
case 'border-color':
case 'scale-color':
$this->__SetColorToValue("axis_" . str_replace(array("ackground", "-"),
array("g", ""),
$name),
$value);
break;
case 'scale-font':
$this->SetAxisScaleFont($value);
break;
case 'show-xscale':
$this->axis_xscalevisible = ($value == 1 || $value == 'yes' ? 1 : 0);
break;
case 'show-yscale':
$this->axis_yscalevisible = ($value == 1 || $value == 'yes' ? 1 : 0);
break;
case 'gridlines':
$this->axis_gridlines = ($value == 1 || $value == 'yes' ? 1 : 0);
break;
case 'position':
$this->SetAxisPositions($value);
break;
case 'deepness':
$this->axis_deepness = (int) $value;
break;
}
}
}
function __LoadScaleValues($data) {
foreach ($data as $name => $value) {
$name = strtolower($name);
switch ($name) {
case 'x-round':
$this->SetScaleRoundX($value);
break;
case 'y-round':
$this->SetScaleRoundY($value);
break;
case 'x-fun':
$this->SetScaleFunctionX($value);
break;
case 'y-fun':
$this->SetScaleFunctionY($value);
break;
}
}
}
function __LoadLegendValues($data) {
foreach ($data as $name => $value) {
$name = strtolower($name);
switch ($name) {
case 'background-color':
case 'border-color':
case 'color':
$this->__SetColorToValue("legend_" . str_replace(array("ackground", "-"),
array("g", ""),
$name),
$value);
break;
case 'visible':
$this->SetLegendVisible($value);
break;
case 'floating':
$this->SetLegendFloating($value);
break;
case 'position':
$this->SetLegendPosition($value);
break;
case 'borderwidth':
$this->SetLegendBorderWidth($value);
break;
case 'padding':
$this->SetLegendPadding($value);
break;
case 'inside-padding':
$this->SetLegendInsidePadding($value);
break;
case 'data':
$this->SetLegendData($value);
break;
}
}
}
function __SetColorToValue($varname, $color, $index = false) {
if (is_array($color)) {
for ($i = 0; $i < count($color); $i++) {
$this->__SetColorToValue($varname, $color[$i], $i);
}
} else {
if ($color[0] == "#") { // if it's hex (html format), change to rgb array
if (strlen($color) == 4) {
// if only 3 hex values (I assume it's a shade of grey: #ddd)
$color .= substr($color, -3);
}
$color = array(hexdec($color[1].$color[2]),
hexdec($color[3].$color[4]),
hexdec($color[5].$color[6]));
}
if ($index !== false) $this->{$varname}[$index] = $color;
else $this->$varname = $color;
}
}
function __AllocateColor($varname, $color, $alpha, $index = false) {
if ($index !== false) {
$this->{$varname}[$index] = imagecolorallocatealpha($this->im, $color[0], $color[1], $color[2], $alpha);
} else {
$this->$varname = imagecolorallocatealpha($this->im, $color[0], $color[1], $color[2], $alpha);
}
}
function __DrawLegend() {
if (!$this->legend_visible) return;
$this->legend_height = $this->legend_insidepadding + (count($this->legend_data) * (imagefontheight($this->legend_font) + $this->legend_insidepadding));
switch ($this->legend_position) {
case 1:
$x = $this->legend_padding;
$y = $this->graph_height - $this->legend_padding - $this->legend_height;
break;
case 2:
$x = $y = $this->legend_padding;
break;
case 3:
$x = $this->graph_width - $this->legend_padding - $this->legend_width;
$y = $this->legend_padding;
break;
case 4:
$x = $this->graph_width - $this->legend_padding - $this->legend_width;
$y = $this->graph_height - $this->legend_padding - $this->legend_height;
break;
}
if ($this->legend_floating) {
$x = $x + ($this->legend_position < 3 ? $this->graph_padding['left'] : -$this->graph_padding['right']);
$y = $y + ($this->legend_position == 2 || $this->legend_position == 3 ? $this->graph_padding['top'] : -$this->graph_padding['bottom']);
}
$this->__AllocateColor("im_legend_bordercolor",
$this->legend_bordercolor,
$this->graph_transparencylevel);
$this->__AllocateColor("im_legend_bgcolor",
$this->legend_bgcolor,
$this->graph_transparencylevel);
imagefilledrectangle($this->im, $x + 1, $y + 1, $x + $this->legend_width - 1, $y + $this->legend_height - 1, $this->im_legend_bgcolor);
imagerectangle($this->im, $x, $y, $x + $this->legend_width, $y + $this->legend_height, $this->im_legend_bordercolor);
for ($i = 0; $i < count($this->legend_data); $i++) {
$this->__AllocateColor("im_legend_color", $this->legend_color[$i], $this->graph_transparencylevel, $i);
$this->__DrawLegendItem($x, $y, $i, $this->legend_data[$i], $this->im_legend_color[$i]);
}
}
function __DrawLegendItem($legendx, $legendy, $position, $text, $color) {
$x = $legendx + $this->legend_insidepadding * 3;
$y = $legendy + $this->legend_insidepadding + (($this->legend_insidepadding + imagefontheight($this->legend_font)) * $position);
imagefilledrectangle($this->im, $legendx + $this->legend_insidepadding,
$y + ((imagefontheight($this->legend_font) - $this->legend_insidepadding) / 2),
$legendx + $this->legend_insidepadding * 2,
$y + ((imagefontheight($this->legend_font) - $this->legend_insidepadding) / 2) + $this->legend_insidepadding,
$color);
$this->__DrawText($text, $x, $y, $color, $this->legend_font, 0, 0);
}
function __RoundNumber($n, $round = 1) {
if (is_numeric($n)) {
$weights = " KMG";
$p = 0;
while (abs($n) >= 1000) {
$n = $n / 1000;
$p++;
}
return number_format($n, $round) . trim($weights[$p]);
} else return $n;
}
}
?>