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<?php
/** Libchart - PHP chart library
*
* Copyright (C) 2005-2006 Jean-Marc Tr�meaux (jm.tremeaux at gmail.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
/**
* Text drawing helper
*
* @author Jean-Marc Tr�meaux (jm.tremeaux at gmail.com)
*/
class Text
{
var $HORIZONTAL_LEFT_ALIGN = 1; // PHP4 doesn't support class constants
var $HORIZONTAL_CENTER_ALIGN = 2;
var $HORIZONTAL_RIGHT_ALIGN = 4;
var $VERTICAL_TOP_ALIGN = 8;
var $VERTICAL_CENTER_ALIGN = 16;
var $VERTICAL_BOTTOM_ALIGN = 32;
/**
* Creates a new text drawing helper
*
* @access public
*/
function Text()
{
// Free low-res fonts based on Bitstream Vera <http://dejavu.sourceforge.net/wiki/>
$this->fontCondensed = dirname(__FILE__) . "/../fonts/DejaVuSansCondensed.ttf";
$this->fontCondensedBold = dirname(__FILE__) . "/../fonts/DejaVuSansCondensed-Bold.ttf";
}
/**
* Print text
*
* @access public
* @param Image GD image
* @param integer text coordinate (x)
* @param integer text coordinate (y)
* @param Color text color
* @param string text value
* @param string font file name
* @param bitfield text alignment
*/
function printText($img, $px, $py, $color, $text, $fontFileName, $align = 0)
{
if(!($align & $this->HORIZONTAL_CENTER_ALIGN) && !($align & $this->HORIZONTAL_RIGHT_ALIGN))
$align |= $this->HORIZONTAL_LEFT_ALIGN;
if(!($align & $this->VERTICAL_CENTER_ALIGN) && !($align & $this->VERTICAL_BOTTOM_ALIGN))
$align |= $this->VERTICAL_TOP_ALIGN;
$fontSize = 8;
$lineSpacing = 1;
list($llx, $lly, $lrx, $lry, $urx, $ury, $ulx, $uly) = imageftbbox($fontSize, 0, $fontFileName, $text, array("linespacing" => $lineSpacing));
$textWidth = $lrx - $llx;
$textHeight = $lry - $ury;
$angle = 0;
if($align & $this->HORIZONTAL_CENTER_ALIGN)
$px -= $textWidth / 2;
if($align & $this->HORIZONTAL_RIGHT_ALIGN)
$px -= $textWidth;
if($align & $this->VERTICAL_CENTER_ALIGN)
$py += $textHeight / 2;
if($align & $this->VERTICAL_TOP_ALIGN)
$py += $textHeight;
imagettftext($img, $fontSize, $angle, $px, $py, $color->getColor($img), $fontFileName, $text);
}
/**
* Print text centered horizontally on the image
*
* @access public
* @param Image GD image
* @param integer text coordinate (y)
* @param Color text color
* @param string text value
* @param string font file name
*/
function printCentered($img, $py, $color, $text, $fontFileName)
{
$this->printText($img, imagesx($img) / 2, $py, $color, $text, $fontFileName, $this->HORIZONTAL_CENTER_ALIGN | $this->VERTICAL_CENTER_ALIGN);
}
/**
* Print text in diagonal
*
* @access public
* @param Image GD image
* @param integer text coordinate (x)
* @param integer text coordinate (y)
* @param Color text color
* @param string text value
*/
function printDiagonal($img, $px, $py, $color, $text)
{
$fontSize = 8;
$fontFileName = $this->fontCondensed;
$lineSpacing = 1;
list($lx, $ly, $rx, $ry) = imageftbbox($fontSize, 0, $fontFileName, $text, array("linespacing" => $lineSpacing));
$textWidth = $rx - $lx;
$angle = -45;
imagettftext($img, $fontSize, $angle, $px, $py, $color->getColor($img), $fontFileName, $text);
}
}
?>
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