<?php
/*******************************************************************\
* phpGroupWare - GD Image *
* http://www.phpgroupware.org *
* *
* Written by by Bettina Gille [ceb@phpgroupware.org] *
* *
* Creates images using GD graphics library *
* Copyright (C) 2003 Free Software Foundation, Inc *
* ----------------------------------------------------------------- *
* This class based on htmlGD.php3 *
* Double Choco Latte - Source Configuration Management System *
* Copyright (C) 1999 Michael L. Dean & Tim R. Norman *
* ----------------------------------------------------------------- *
* This library is part of the phpGroupWare API *
* ----------------------------------------------------------------- *
* This library 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 2 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, write to the Free Software *
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
\*******************************************************************/
/* $Id$ */
class gdimage
{
var $filename;
var $type;
var $cur_x;
var $cur_y;
var $width;
var $height;
var $hImage;
var $colormap;
var $hColor;
var $font;
function gdimage()
{
$this->gd = $this->check_gd();
if ($this->gd == 0)
{
echo 'Your PHP installation does not seem to have the required GD library.
Please see the PHP documentation on how to install and enable the GD library.';
exit;
}
$this->cur_x = 0;
$this->cur_y = 0;
$this->width = 0;
$this->height = 0;
$this->hImage = 0;
$this->colormap = array();
$this->hColor = 0;
$this->font = 0;
$this->type = 'png';
$this->temp_file = PHPGW_SERVER_ROOT . SEP . 'phpgwapi' . SEP . 'images' . SEP . 'draw_tmp.png';
}
function check_gd()
{
ob_start();
phpinfo(8); // Just get the modules loaded
$a = ob_get_contents();
ob_end_clean();
if(preg_match('/.*GD Version.*(1[0-9|\.]+).*/',$a,$m))
{
$r=1; //$v=$m[1];
}
elseif(preg_match('/.*GD Version.*(2[0-9|\.]+).*/',$a,$m))
{
$r=2; //$v=$m[1];
}
else
{
$r=0; //$v=$m[1];
}
return $r;
}
function Init()
{
$this->hImage = ImageCreate($this->width, $this->height) or die;
return True;
}
function Done()
{
ImageDestroy($this->hImage);
}
function MoveTo($x, $y)
{
if ($x >= 0 && $x <= $this->width && $y >= 0 && $y <= $this->height)
{
$this->cur_x = $x;
$this->cur_y = $y;
return true;
}
return false;
}
function LineTo($x, $y, $linestyle = 'solid')
{
if ($x >= 0 && $x <= $this->width && $y >= 0 && $y <= $this->height)
{
if ($linestyle == 'dashed')
ImageDashedLine($this->hImage, $this->cur_x, $this->cur_y, $x, $y, $this->hColor);
else
ImageLine($this->hImage, $this->cur_x, $this->cur_y, $x, $y, $this->hColor);
$this->cur_x = $x;
$this->cur_y = $y;
return true;
}
return false;
}
function Line($x1, $y1, $x2, $y2, $linestyle = 'solid')
{
if ($x1 >= 0 && $x1 <= $this->width && $y1 >= 0 && $y1 <= $this->height && $x2 >= 0 && $x2 <= $this->width && $y2 >= 0 && $y2 <= $this->height)
{
if ($linestyle == 'solid')
ImageLine($this->hImage, $x1, $y1, $x2, $y2, $this->hColor);
else
ImageDashedLine($this->hImage, $x1, $y1, $x2, $y2, $this->hColor);
$this->cur_x = $x2;
$this->cur_y = $y2;
return true;
}
return false;
}
function SetColor($r, $g, $b, $set_transparent=False)
{
$key = "$r,$g,$b";
if (!IsSet($this->colormap[$key]))
{
$this->hColor = ImageColorAllocate($this->hImage, $r, $g, $b);
$this->colormap[$key] = $this->hColor;
}
else
{
$this->hColor = $this->colormap[$key];
}
if ($set_transparent)
{
ImageColorTransparent($this->hImage,$this->hColor);
}
return true;
}
function SetColorByName($name)
{
$r = 0;
$g = 0;
$b = 0;
switch ($name)
{
case 'red':
$r = 180;
break;
case 'green':
$g = 180;
break;
case 'blue':
$b = 180;
break;
case 'bright red':
$r = 255;
break;
case 'bright green':
$g = 255;
break;
case 'bright blue':
$b = 255;
break;
case 'dark red':
$r = 80;
break;
case 'dark green':
$g = 80;
break;
case 'dark blue':
$b = 80;
break;
case 'yellow':
$r = 255;
$g = 215;
break;
}
return $this->SetColor($r, $g, $b);
}
function SetFont($font)
{
if ($font < 1 || $font > 5)
return false;
$this->font = $font;
return true;
}
function GetFontHeight()
{
return ImageFontHeight($this->font);
}
function GetFontWidth()
{
return ImageFontWidth($this->font);
}
function DrawText($params)
{
$text = $params['text'];
$direction = (isset($params['direction'])?$params['direction']:'');
$justification = (isset($params['justification'])?$params['justification']:'center');
$margin_left = (isset($params['margin_left'])?$params['margin_left']:'');
$textwidth = ImageFontWidth($this->font) * strlen($text);
/*if (isset($margin_left) && $textwidth >= $margin_left)
{
$text = strlen($text) - 1 . '.';
}*/
if ($justification == 'center')
{
if ($direction == 'up')
{
$this->cur_y += $textwidth / 2;
if ($this->cur_y > $this->height)
$this->cur_y = $this->height;
}
else
{
$this->cur_x -= $textwidth / 2;
if ($this->cur_x < 0)
$this->cur_x = 0;
}
}
else if ($justification == 'right')
{
if ($direction == 'up')
{
$this->cur_y += $textwidth;
if ($this->cur_y > $this->height)
$this->cur_y = $this->height;
}
else
{
$this->cur_x -= $textwidth;
if ($this->cur_x < 0)
$this->cur_x = 0;
}
}
if ($direction == 'up')
ImageStringUp($this->hImage, $this->font, $this->cur_x, $this->cur_y, $text, $this->hColor);
else
ImageString($this->hImage, $this->font, $this->cur_x, $this->cur_y, $text, $this->hColor);
return true;
}
function ToBrowser()
{
//header('Content-type: image/' . $this->type);
switch ($this->type)
{
case 'png':
ImagePNG($this->hImage,$this->temp_file);
break;
case 'gif':
ImageGIF($this->hImage);
break;
case 'jpeg':
ImageJPEG($this->hImage);
break;
}
}
}
?>