mirror of
https://github.com/EGroupware/egroupware.git
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304 lines
7.3 KiB
PHP
304 lines
7.3 KiB
PHP
<?php
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/*******************************************************************\
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* phpGroupWare - GD Image *
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* http://www.phpgroupware.org *
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* *
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* Written by by Bettina Gille [ceb@phpgroupware.org] *
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* *
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* Creates images using GD graphics library *
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* Copyright (C) 2003 Free Software Foundation, Inc *
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* ----------------------------------------------------------------- *
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* This class based on htmlGD.php3 *
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* Double Choco Latte - Source Configuration Management System *
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* Copyright (C) 1999 Michael L. Dean & Tim R. Norman *
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* ----------------------------------------------------------------- *
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* This library is part of the phpGroupWare API *
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* ----------------------------------------------------------------- *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License as *
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* published by the Free Software Foundation; either version 2 of *
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* the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software *
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
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\*******************************************************************/
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/* $Id$ */
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class gdimage
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{
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var $filename;
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var $type;
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var $cur_x;
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var $cur_y;
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var $width;
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var $height;
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var $hImage;
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var $colormap;
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var $hColor;
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var $font;
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function gdimage()
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{
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$this->gd = $this->check_gd();
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if ($this->gd == 0)
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{
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echo 'Your PHP installation does not seem to have the required GD library.
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Please see the PHP documentation on how to install and enable the GD library.';
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exit;
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}
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$this->cur_x = 0;
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$this->cur_y = 0;
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$this->width = 0;
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$this->height = 0;
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$this->hImage = 0;
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$this->colormap = array();
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$this->hColor = 0;
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$this->font = 0;
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$this->type = 'png';
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$this->temp_file = PHPGW_SERVER_ROOT . SEP . 'phpgwapi' . SEP . 'images' . SEP . 'draw_tmp.png';
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}
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function check_gd()
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{
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ob_start();
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phpinfo(8); // Just get the modules loaded
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$a = ob_get_contents();
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ob_end_clean();
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if(preg_match('/.*GD Version.*(1[0-9|\.]+).*/',$a,$m))
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{
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$r=1; //$v=$m[1];
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}
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elseif(preg_match('/.*GD Version.*(2[0-9|\.]+).*/',$a,$m))
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{
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$r=2; //$v=$m[1];
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}
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else
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{
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$r=0; //$v=$m[1];
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}
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return $r;
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}
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function Init()
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{
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$this->hImage = ImageCreate($this->width, $this->height) or die;
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return True;
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}
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function Done()
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{
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ImageDestroy($this->hImage);
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}
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function MoveTo($x, $y)
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{
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if ($x >= 0 && $x <= $this->width && $y >= 0 && $y <= $this->height)
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{
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$this->cur_x = $x;
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$this->cur_y = $y;
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return true;
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}
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return false;
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}
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function LineTo($x, $y, $linestyle = 'solid')
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{
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if ($x >= 0 && $x <= $this->width && $y >= 0 && $y <= $this->height)
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{
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if ($linestyle == 'dashed')
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ImageDashedLine($this->hImage, $this->cur_x, $this->cur_y, $x, $y, $this->hColor);
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else
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ImageLine($this->hImage, $this->cur_x, $this->cur_y, $x, $y, $this->hColor);
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$this->cur_x = $x;
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$this->cur_y = $y;
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return true;
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}
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return false;
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}
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function Line($x1, $y1, $x2, $y2, $linestyle = 'solid')
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{
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if ($x1 >= 0 && $x1 <= $this->width && $y1 >= 0 && $y1 <= $this->height && $x2 >= 0 && $x2 <= $this->width && $y2 >= 0 && $y2 <= $this->height)
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{
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if ($linestyle == 'solid')
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ImageLine($this->hImage, $x1, $y1, $x2, $y2, $this->hColor);
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else
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ImageDashedLine($this->hImage, $x1, $y1, $x2, $y2, $this->hColor);
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$this->cur_x = $x2;
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$this->cur_y = $y2;
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return true;
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}
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return false;
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}
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function SetColor($r, $g, $b, $set_transparent=False)
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{
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$key = "$r,$g,$b";
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if (!IsSet($this->colormap[$key]))
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{
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$this->hColor = ImageColorAllocate($this->hImage, $r, $g, $b);
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$this->colormap[$key] = $this->hColor;
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}
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else
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{
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$this->hColor = $this->colormap[$key];
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}
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if ($set_transparent)
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{
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ImageColorTransparent($this->hImage,$this->hColor);
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}
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return true;
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}
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function SetColorByName($name)
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{
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$r = 0;
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$g = 0;
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$b = 0;
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switch ($name)
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{
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case 'red':
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$r = 180;
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break;
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case 'green':
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$g = 180;
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break;
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case 'blue':
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$b = 180;
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break;
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case 'bright red':
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$r = 255;
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break;
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case 'bright green':
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$g = 255;
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break;
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case 'bright blue':
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$b = 255;
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break;
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case 'dark red':
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$r = 80;
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break;
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case 'dark green':
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$g = 80;
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break;
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case 'dark blue':
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$b = 80;
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break;
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case 'yellow':
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$r = 255;
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$g = 215;
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break;
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}
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return $this->SetColor($r, $g, $b);
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}
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function SetFont($font)
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{
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if ($font < 1 || $font > 5)
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return false;
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$this->font = $font;
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return true;
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}
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function GetFontHeight()
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{
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return ImageFontHeight($this->font);
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}
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function GetFontWidth()
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{
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return ImageFontWidth($this->font);
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}
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function DrawText($params)
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{
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$text = $params['text'];
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$direction = (isset($params['direction'])?$params['direction']:'');
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$justification = (isset($params['justification'])?$params['justification']:'center');
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$margin_left = (isset($params['margin_left'])?$params['margin_left']:'');
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$textwidth = ImageFontWidth($this->font) * strlen($text);
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/*if (isset($margin_left) && $textwidth >= $margin_left)
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{
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$text = strlen($text) - 1 . '.';
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}*/
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if ($justification == 'center')
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{
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if ($direction == 'up')
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{
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$this->cur_y += $textwidth / 2;
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if ($this->cur_y > $this->height)
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$this->cur_y = $this->height;
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}
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else
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{
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$this->cur_x -= $textwidth / 2;
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if ($this->cur_x < 0)
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$this->cur_x = 0;
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}
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}
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else if ($justification == 'right')
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{
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if ($direction == 'up')
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{
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$this->cur_y += $textwidth;
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if ($this->cur_y > $this->height)
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$this->cur_y = $this->height;
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}
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else
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{
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$this->cur_x -= $textwidth;
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if ($this->cur_x < 0)
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$this->cur_x = 0;
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}
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}
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if ($direction == 'up')
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ImageStringUp($this->hImage, $this->font, $this->cur_x, $this->cur_y, $text, $this->hColor);
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else
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ImageString($this->hImage, $this->font, $this->cur_x, $this->cur_y, $text, $this->hColor);
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return true;
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}
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function ToBrowser()
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{
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//header('Content-type: image/' . $this->type);
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switch ($this->type)
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{
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case 'png':
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ImagePNG($this->hImage,$this->temp_file);
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break;
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case 'gif':
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ImageGIF($this->hImage);
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break;
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case 'jpeg':
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ImageJPEG($this->hImage);
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break;
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}
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}
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}
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?>
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