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Diffstat (limited to 'packages/dspam/pear/Image/Canvas/GD.php')
| -rw-r--r-- | packages/dspam/pear/Image/Canvas/GD.php | 1693 |
1 files changed, 1693 insertions, 0 deletions
diff --git a/packages/dspam/pear/Image/Canvas/GD.php b/packages/dspam/pear/Image/Canvas/GD.php new file mode 100644 index 00000000..40132899 --- /dev/null +++ b/packages/dspam/pear/Image/Canvas/GD.php @@ -0,0 +1,1693 @@ +<?php + +/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ + +/** + * Image_Canvas + * + * Class for handling output in GD compatible format. + * + * Supported formats are PNG, JPEG, GIF and WBMP. + * + * Requires PHP extension GD + * + * PHP versions 4 and 5 + * + * LICENSE: 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., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA + * + * @category Images + * @package Image_Canvas + * @author Jesper Veggerby <pear.nosey@veggerby.dk> + * @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen + * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 + * @version CVS: $Id$ + * @link http://pear.php.net/pepr/pepr-proposal-show.php?id=212 + */ + +/** + * Include file Image/Canvas.php + */ +require_once 'Image/Canvas/WithMap.php'; + +/** + * Include file Image/Canvas/Color.php + */ +require_once 'Image/Canvas/Color.php'; + +/** + * Canvas class to output using PHP GD support. + * + * @category Images + * @package Image_Canvas + * @author Jesper Veggerby <pear.nosey@veggerby.dk> + * @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen + * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 + * @version Release: @package_version@ + * @link http://pear.php.net/pepr/pepr-proposal-show.php?id=212 + * @abstract + */ +class Image_Canvas_GD extends Image_Canvas_WithMap +{ + + /** + * The canvas of the graph + * @var resource + * @access private + */ + var $_canvas; + + /** + * The canvas to use for tiled filling + * @var resource + * @access private + */ + var $_tileImage = null; + + /** + * Is version GD2 installed? + * @var bool + * @access private + */ + var $_gd2 = true; + + /** + * Antialiasing? + * + * Possible values 'off', 'driver' and 'native' + * + * @var string + * @access private + */ + var $_antialias = 'off'; + + var $_alpha = false; + + var $_clipping = array(); + + /** + * Create the GD canvas. + * + * Parameters available: + * + * 'width' The width of the graph on the canvas + * + * 'height' The height of the graph on the canvas + * + * 'left' The left offset of the graph on the canvas + * + * 'top' The top offset of the graph on the canvas + * + * 'antialias' = 'native' enables native GD antialiasing - this + * method has no severe impact on performance (approx +5%). Requires PHP + * 4.3.2 (with bundled GD2) + * + * 'antialias' = {true|'driver'} Image_Graph implemented method. This method + * has a severe impact on performance, drawing an antialiased line this + * way is about XX times slower, with an overall performance impact of + * about +40%. The justification for this method is that if native support + * is not available this can be used, it is also a future feature that this + * method for antialiasing will support line styles. + * + * Use antialiased for best results with a line/area chart having just a few + * datapoints. Native antialiasing does not provide a good appearance with + * short lines, as for example with smoothed charts. Antialiasing does not + * (currently) work with linestyles, neither native nor driver method! + * + * 'noalpha' = true If alpha blending is to be disabled + * + * 'filename' An image to open, on which the graph is created on + * + * 'gd' A GD resource to add the image to, use this option to continue + * working on an already existing GD resource. Make sure this is passed 'by- + * reference' (using &) + * + * 'usemap' Initialize an image map + * + * 'gd' and 'filename' are mutually exclusive with 'gd' as preference + * + * 'width' and 'height' are required unless 'filename' or 'gd' are + * specified, in which case the width and height are taken as the actual + * image width/height. If the latter is the case and 'left' and/or 'top' was + * also specified, the actual 'width'/'height' are altered so that the graph + * fits inside the canvas (i.e 'height' = actual height - top, etc.) + * + * @param array $param Parameter array + */ + function Image_Canvas_GD($param) + { + include_once 'Image/Canvas/Color.php'; + + parent::Image_Canvas_WithMap($param); + + $this->_gd2 = ($this->_version() == 2); + $this->_font = array('font' => 1, 'color' => 'black'); + + if ((isset($param['gd'])) && (is_resource($param['gd']))) { + $this->_canvas =& $param['gd']; + } elseif (isset($param['filename'])) { + $this->_canvas =& $this->_getGD($param['filename']); + } else { + if ($this->_gd2) { + $this->_canvas = ImageCreateTrueColor( + $this->_width, + $this->_height + ); + if ((!isset($param['noalpha'])) || ($param['noalpha'] !== true)) { + ImageAlphaBlending($this->_canvas, true); + $this->_alpha = true; + } + } else { + $this->_canvas = ImageCreate($this->_width, $this->_height); + } + } + + if (isset($param['antialias'])) { + $this->_antialias = $param['antialias']; + } + + if ($this->_antialias === true) { + $this->_antialias = 'driver'; + } + + if (($this->_gd2) && ($this->_antialias === 'native')) { + ImageAntialias($this->_canvas, true); + } + } + + /** + * Get an GD image resource from a file + * + * @param string $filename + * @return mixed The GD image resource + * @access private + */ + function &_getGD($filename) + { + $info = getimagesize($filename); + + $result = null; + switch($info[2]) { + case IMG_PNG: + $result =& ImageCreateFromPNG($filename); + break; + + case IMG_JPG: + $result =& ImageCreateFromJPEG($filename); + break; + + case IMG_GIF: + $result =& ImageCreateFromGIF($filename); + break; + } + return $result; + } + + /** + * Get the color index for the RGB color + * + * @param int $color The color + * @return int The GD image index of the color + * @access private + */ + function _color($color = false) + { + if (($color === false) || ($color === 'opague') || ($color === 'transparent')) { + return ImageColorTransparent($this->_canvas); + } else { + return Image_Canvas_Color::allocateColor($this->_canvas, $color); + } + } + + /** + * Get the GD applicable linestyle + * + * @param mixed $lineStyle The line style to return, false if the one + * explicitly set + * @return mixed A GD compatible linestyle + * @access private + */ + function _getLineStyle($lineStyle = false) + { + if ($this->_gd2) { + ImageSetThickness($this->_canvas, $this->_thickness); + } + + if ($lineStyle == 'transparent') { + return false; + } elseif ($lineStyle === false) { + if (is_array($this->_lineStyle)) { + $colors = array(); + foreach ($this->_lineStyle as $color) { + if ($color === 'transparent') { + $color = false; + } + $colors[] = $this->_color($color); + } + ImageSetStyle($this->_canvas, $colors); + return IMG_COLOR_STYLED; + } else { + return $this->_color($this->_lineStyle); + } + } else { + return $this->_color($lineStyle); + } + } + + /** + * Get the GD applicable fillstyle + * + * @param mixed $fillStyle The fillstyle to return, false if the one + * explicitly set + * @return mixed A GD compatible fillstyle + * @access private + */ + function _getFillStyle($fillStyle = false, $x0 = 0, $y0 = 0, $x1 = 0, $y1 = 0) + { + if ($this->_tileImage != null) { + ImageDestroy($this->_tileImage); + $this->_tileImage = null; + } + if ($fillStyle == 'transparent') { + return false; + } elseif ($fillStyle === false) { + if (is_resource($this->_fillStyle)) { + $x = min($x0, $x1); + $y = min($y0, $y1); + $w = abs($x1 - $x0) + 1; + $h = abs($y1 - $y0) + 1; + if ($this->_gd2) { + $this->_tileImage = ImageCreateTrueColor( + $this->getWidth(), + $this->getHeight() + ); + + ImageCopyResampled( + $this->_tileImage, + $this->_fillStyle, + $x, + $y, + 0, + 0, + $w, + $h, + ImageSX($this->_fillStyle), + ImageSY($this->_fillStyle) + ); + } else { + $this->_tileImage = ImageCreate( + $this->getWidth(), + $this->getHeight() + ); + + ImageCopyResized( + $this->_tileImage, + $this->_fillStyle, + $x, + $y, + 0, + 0, + $w, + $h, + ImageSX($this->_fillStyle), + ImageSY($this->_fillStyle) + ); + } + ImageSetTile($this->_canvas, $this->_tileImage); + return IMG_COLOR_TILED; + } elseif ((is_array($this->_fillStyle)) && (isset($this->_fillStyle['direction']))) { + $width = abs($x1 - $x0) + 1; + $height = abs($y1 - $y0) + 1; + + switch ($this->_fillStyle['direction']) { + case 'horizontal': + $count = $width; + break; + + case 'vertical': + $count = $height; + break; + + case 'horizontal_mirror': + $count = $width / 2; + break; + + case 'vertical_mirror': + $count = $height / 2; + break; + + case 'diagonal_tl_br': + case 'diagonal_bl_tr': + $count = sqrt($width * $width + $height * $height); + break; + + case 'radial': + $count = max($width, $height, sqrt($width * $width + $height * $height)) + 1; + break; + + } + + $count = round($count); + + if ($this->_gd2) { + $this->_tileImage = ImageCreateTrueColor( + $this->getWidth(), + $this->getHeight() + ); + } else { + $this->_tileImage = ImageCreate( + $this->getWidth(), + $this->getHeight() + ); + } + + + $startColor = Image_Canvas_Color::color2RGB( + ($this->_fillStyle['direction'] == 'radial' ? + $this->_fillStyle['end'] : + $this->_fillStyle['start'] + ) + ); + $endColor = Image_Canvas_Color::color2RGB( + ($this->_fillStyle['direction'] == 'radial' ? + $this->_fillStyle['start'] : + $this->_fillStyle['end'] + ) + ); + + $redIncrement = ($endColor[0] - $startColor[0]) / $count; + $greenIncrement = ($endColor[1] - $startColor[1]) / $count; + $blueIncrement = ($endColor[2] - $startColor[2]) / $count; + + $color = false; + for ($i = 0; $i < $count; $i ++) { + unset($color); + if ($i == 0) { + $color = $startColor; + unset($color[3]); + } else { + $color[0] = round(($redIncrement * $i) + + $redIncrement + $startColor[0]); + $color[1] = round(($greenIncrement * $i) + + $greenIncrement + $startColor[1]); + $color[2] = round(($blueIncrement * $i) + + $blueIncrement + $startColor[2]); + } + $color = Image_Canvas_Color::allocateColor( + $this->_tileImage, + $color + ); + + switch ($this->_fillStyle['direction']) { + case 'horizontal': + ImageLine($this->_tileImage, + $x0 + $i, + $y0, + $x0 + $i, + $y1, $color); + break; + + case 'vertical': + ImageLine($this->_tileImage, + $x0, + $y1 - $i, + $x1, + $y1 - $i, $color); + break; + + case 'horizontal_mirror': + if (($x0 + $i) <= ($x1 - $i)) { + ImageLine($this->_tileImage, + $x0 + $i, + $y0, + $x0 + $i, + $y1, $color); + + ImageLine($this->_tileImage, + $x1 - $i, + $y0, + $x1 - $i, + $y1, $color); + } + break; + + case 'vertical_mirror': + if (($y0 + $i) <= ($y1 - $i)) { + ImageLine($this->_tileImage, + $x0, + $y0 + $i, + $x1, + $y0 + $i, $color); + ImageLine($this->_tileImage, + $x0, + $y1 - $i, + $x1, + $y1 - $i, $color); + } + break; + + case 'diagonal_tl_br': + if (($i > $width) && ($i > $height)) { + $polygon = array ( + $x1, $y0 + $i - $width - 1, + $x1, $y1, + $x0 + $i - $height - 1, $y1); + } elseif ($i > $width) { + $polygon = array ( + $x0, $y0 + $i, + $x0, $y1, + $x1, $y1, + $x1, $y0 + $i - $width - 1); + } elseif ($i > $height) { + $polygon = array ( + $x0 + $i - $height - 1, $y1, + $x1, $y1, + $x1, $y0, + $x0 + $i, $y0); + } else { + $polygon = array ( + $x0, $y0 + $i, + $x0, $y1, + $x1, $y1, + $x1, $y0, + $x0 + $i, $y0); + } + ImageFilledPolygon( + $this->_tileImage, + $polygon, + count($polygon) / 2, + $color + ); + break; + + case 'diagonal_bl_tr': + if (($i > $width) && ($i > $height)) { + $polygon = array ( + $x1, $y1 - $i + $width - 1, + $x1, $y0, + $x0 + $i - $height - 1, $y0); + } elseif ($i > $width) { + $polygon = array ( + $x0, $y1 - $i, + $x0, $y0, + $x1, $y0, + $x1, $y1 - $i + $width - 1); + } elseif ($i > $height) { + $polygon = array ( + $x0 + $i - $height - 1, $y0, + $x1, $y0, + $x1, $y1, + $x0 + $i, $y1); + } else { + $polygon = array ( + $x0, $y1 - $i, + $x0, $y0, + $x1, $y0, + $x1, $y1, + $x0 + $i, $y1); + } + ImageFilledPolygon( + $this->_tileImage, + $polygon, + count($polygon) / 2, + $color + ); + break; + + case 'radial': + if (($this->_gd2) && ($i < $count)) { + ImageFilledEllipse( + $this->_tileImage, + $x0 + $width / 2, + $y0 + $height / 2, + $count - $i, + $count - $i, + $color + ); + } + break; + } + } + ImageSetTile($this->_canvas, $this->_tileImage); + return IMG_COLOR_TILED; + } else { + return $this->_color($this->_fillStyle); + } + } else { + return $this->_color($fillStyle); + } + } + + /** + * Sets an image that should be used for filling + * + * @param string $filename The filename of the image to fill with + */ + function setFillImage($filename) + { + $this->_fillStyle =& $this->_getGD($filename); + } + + /** + * Sets the font options. + * + * The $font array may have the following entries: + * + * 'ttf' = the .ttf file (either the basename, filename or full path) + * If 'ttf' is specified, then the following can be specified + * + * 'size' = size in pixels + * + * 'angle' = the angle with which to write the text + * + * @param array $font The font options. + */ + function setFont($fontOptions) + { + parent::setFont($fontOptions); + + if (isset($this->_font['ttf'])) { + $this->_font['file'] = str_replace('\\', '/', Image_Canvas_Tool::fontMap($this->_font['ttf'])); + } elseif (!isset($this->_font['font'])) { + $this->_font['font'] = 1; + } + + if (!isset($this->_font['color'])) { + $this->_font['color'] = 'black'; + } + + if ((isset($this->_font['angle'])) && ($this->_font['angle'] === false)) { + $this->_font['angle'] = 0; + } + } + + /** + * Calculate pixels on a line + * + * @param int $x0 X start point + * @param int $y0 X start point + * @param int $x1 X end point + * @param int $y1 Y end point + * @return array An associated array of x,y points with all pixels on the + * line + * @access private + */ + function &_linePixels($x0, $y0, $x1, $y1) + { + $pixels = array(); + if (abs($x0 - $x1) > abs($y0 - $y1)) { + if ($x1 != $x0) { + $m = ($y1 - $y0) / ($x1 - $x0); + } else { + $m = 0; + } + $b = $y0 - $m * $x0; + $strx = min($x0, $x1); + $endx = max($x0, $x1); + for ($x = $strx; $x <= $endx; $x++) { + $pixels[] = array('X' => $x, 'Y' => ($m * $x + $b)); + } + } else { + if ($y1 != $y0) { + $m = ($x1 - $x0) / ($y1 - $y0); + } else { + $m = 0; + } + $b = $x0 - $m * $y0; + $stry = min($y0, $y1); + $endy = max($y0, $y1); + for ($y = $stry; $y <= $endy; $y++) { + $pixels[] = array('X' => ($m * $y + $b), 'Y' => $y); + } + } + return $pixels; + } + + /** + * Draws an antialiased line + * + * @param int $x0 X start point + * @param int $y0 X start point + * @param int $x1 X end point + * @param int $y1 Y end point + * @param mixed $color The line color, can be omitted + * @access private + */ + function _antialiasedLine($x0, $y0, $x1, $y1, $color = false) + { + if (($line = $this->_getLineStyle($color)) !== false) { + if ($line >= 0) { + $line = ImageColorsForIndex($this->_canvas, $line); + $pixels = &$this->_linePixels($x0, $y0, $x1, $y1); + foreach ($pixels as $point) { + $this->_antialiasedPixel($point['X'], $point['Y'], $line); + } + unset($pixels); + } + } + } + + + /** + * Draws an antialiased pixel + * + * @param int $x X point + * @param int $y Y point + * @param mixed $color The pixel color + * @access private + */ + function _antialiasedPixel($x, $y, $color) + { + $fx = floor($x); + $fy = floor($y); + $cx = ceil($x); + $cy = ceil($y); + $xa = $x - $fx; + $xb = $cx - $x; + $ya = $y - $fy; + $yb = $cy - $y; + if (($cx == $fx) && ($cy == $fy)) { + $this->_antialisedSubPixel($fx, $fy, 0.0, 1.0, $color); + } else { + $this->_antialisedSubPixel($fx, $fy, $xa + $ya, $xb + $yb, $color); + if ($cy != $fy) { + $this->_antialisedSubPixel($fx, $cy, $xa + $yb, $xb + $ya, $color); + } + if ($cx != $fx) { + $this->_antialisedSubPixel($cx, $fy, $xb + $ya, $xa + $yb, $color); + if ($cy != $fy) { + $this->_antialisedSubPixel($cx, $cy, $xb + $yb, $xa + $ya, $color); + } + } + } + } + + /** + * Antialias'es the pixel around x,y with weights a,b + * + * @param int $x X point + * @param int $y Y point + * @param int $a The weight of the current color + * @param int $b The weight of the applied/wanted color + * @param mixed $color The pixel color + * @access private + */ + function _antialisedSubPixel($x, $y, $a, $b, $color) + { + $x = $this->_getX($x); + $y = $this->_getX($y); + if (($x >=0 ) && ($y >= 0) && ($x < $this->getWidth()) && ($y < $this->getHeight())) { + $tempColor = ImageColorsForIndex($this->_canvas, ImageColorAt($this->_canvas, $x, $y)); + + $newColor[0] = min(255, round($tempColor['red'] * $a + $color['red'] * $b)); + $newColor[1] = min(255, round($tempColor['green'] * $a + $color['green'] * $b)); + $newColor[2] = min(255, round($tempColor['blue'] * $a + $color['blue'] * $b)); + //$newColor[3] = 0; + $color = '#'; + foreach ($newColor as $acolor) { + $color .= sprintf('%02s', dechex($acolor)); + } + $newColor = $this->_color($color);//,'rgb(' . $newColor[0] . ',' . $newColor[1] . ',' . $newColor[2] .')'; + + ImageSetPixel($this->_canvas, $x, $y, $newColor); + } + } + + + /** + * Draw a line end + * + * Parameter array: + * + * 'x': int X point + * + * 'y': int Y point + * + * 'end': string The end type of the end + * + * 'size': int The size of the end + * + * 'color': string The color of the end + * + * 'angle': int [optional] The angle with which to draw the end + * + * @param array $params Parameter array + */ + function drawEnd($params) + { + $x = $this->_getX($params['x']); + $y = $this->_getY($params['y']); + $size = $params['size']; + //var_dump($params); + $angle = deg2rad((isset($params['angle']) ? $params['angle'] : 0)); + $pi2 = pi() / 2; + switch ($params['end']) { + case 'lollipop': + case 'circle': + $this->ellipse( + array( + 'x' => $x, + 'y' => $y, + 'rx' => $size / 2, + 'ry' => $size / 2, + 'fill' => $params['color'], + 'line' => $params['color'] + ) + ); + break; + case 'diamond': + $x0 = round($params['x'] + cos($angle) * $size * 0.65); + $y0 = round($params['y'] - sin($angle) * $size * 0.65); + $shape = array( + $x0 + round(cos($angle) * $size * 0.65), + $y0 - round(sin($angle) * $size * 0.65), + $x0 + round(cos($angle + $pi2) * $size * 0.65), + $y0 - round(sin($angle + $pi2) * $size * 0.65), + $x0 + round(cos($angle + pi()) * $size * 0.65), + $y0 - round(sin($angle + pi()) * $size * 0.65), + $x0 + round(cos($angle + 3 * $pi2) * $size * 0.65), + $y0 - round(sin($angle + 3 * $pi2) * $size * 0.65) + ); + break; + case 'line': + $this->line( + array( + 'x0' => $x + round(cos($angle + $pi2) * $size / 2), + 'y0' => $y - round(sin($angle + $pi2) * $size / 2), + 'x1' => $x + round(cos($angle + 3 * $pi2) * $size / 2), + 'y1' => $y - round(sin($angle + 3 * $pi2) * $size / 2), + 'color' => $params['color'] + ) + ); + break; + case 'box': + case 'rectangle': + $x0 = round($params['x'] + cos($angle) * $size / 2); + $y0 = round($params['y'] - sin($angle) * $size / 2); + $pi4 = pi() / 4; + $shape = array( + $x0 + round(cos($angle + $pi4) * $size / 2), + $y0 - round(sin($angle + $pi4) * $size / 2), + $x0 + round(cos($angle + $pi2 + $pi4) * $size / 2), + $y0 - round(sin($angle + $pi2 + $pi4) * $size / 2), + $x0 + round(cos($angle + pi() + $pi4) * $size / 2), + $y0 - round(sin($angle + pi() + $pi4) * $size / 2), + $x0 + round(cos($angle + 3 * $pi2 + $pi4) * $size / 2), + $y0 - round(sin($angle + 3 * $pi2 + $pi4) * $size / 2) + ); + break; + case 'arrow': + $shape = array( + $x + cos($angle) * $size, + $y - sin($angle) * $size, + $x + cos($angle + $pi2) * $size * 0.4, + $y - sin($angle + $pi2) * $size * 0.4, + $x + cos($angle + 3 * $pi2) * $size * 0.4, + $y - sin($angle + 3 * $pi2) * $size * 0.4, + ); + break; + case 'arrow2': + $shape = array( + $x + round(cos($angle) * $size), + $y - round(sin($angle) * $size), + $x + round(cos($angle + $pi2 + deg2rad(45)) * $size), + $y - round(sin($angle + $pi2 + deg2rad(45)) * $size), + $x, + $y, + $x + round(cos($angle + 3 * $pi2 - deg2rad(45)) * $size), + $y - round(sin($angle + 3 * $pi2 - deg2rad(45)) * $size), + ); + break; + } + + if (isset($shape)) { + // output the shape + if (($fill = $this->_getFillStyle($params['color'])) !== false) { + ImageFilledPolygon($this->_canvas, $shape, count($shape)/2, $fill); + } + } + parent::drawEnd($params); + } + + /** + * Draw a line + * + * Parameter array: + * + * 'x0': int X start point + * + * 'y0': int Y start point + * + * 'x1': int X end point + * + * 'y1': int Y end point + * + * 'color': mixed [optional] The line color + * + * @param array $params Parameter array + */ + function line($params) + { + $x0 = $this->_getX($params['x0']); + $y0 = $this->_getY($params['y0']); + $x1 = $this->_getX($params['x1']); + $y1 = $this->_getY($params['y1']); + $color = (isset($params['color']) ? $params['color'] : false); + + $x0 = $this->_getX($x0); + $y0 = $this->_getY($y0); + $x1 = $this->_getX($x1); + $y1 = $this->_getY($y1); + if (($this->_antialias === 'driver') && ($x0 != $x1) && ($y0 != $y1)) { + $this->_antialiasedLine($x0, $y0, $x1, $y1, $color); + } elseif (($line = $this->_getLineStyle($color)) !== false) { + ImageLine($this->_canvas, $x0, $y0, $x1, $y1, $line); + } + parent::line($params); + } + + /** + * Parameter array: + * + * 'connect': bool [optional] Specifies whether the start point should be + * connected to the endpoint (closed polygon) or not (connected line) + * + * 'fill': mixed [optional] The fill color + * + * 'line': mixed [optional] The line color + * @param array $params Parameter array + */ + function polygon($params) + { + include_once 'Image/Canvas/Tool.php'; + + $connectEnds = (isset($params['connect']) ? $params['connect'] : false); + $fillColor = (isset($params['fill']) ? $params['fill'] : false); + $lineColor = (isset($params['line']) ? $params['line'] : false); + + if (!$connectEnds) { + $fillColor = 'transparent'; + } + $style = $this->_getLineStyle($lineColor) . $this->_getFillStyle($fillColor); + + $lastPoint = false; + foreach ($this->_polygon as $point) { + if (($lastPoint) && (isset($lastPoint['P1X'])) && + (isset($lastPoint['P1Y'])) && (isset($lastPoint['P2X'])) && + (isset($lastPoint['P2Y']))) + { + $dx = abs($point['X'] - $lastPoint['X']); + $dy = abs($point['Y'] - $lastPoint['Y']); + $d = sqrt($dx * $dx + $dy * $dy); + if ($d > 0) { + $interval = 1 / $d; + for ($t = 0; $t <= 1; $t = $t + $interval) { + $x = Image_Canvas_Tool::bezier( + $t, + $lastPoint['X'], + $lastPoint['P1X'], + $lastPoint['P2X'], + $point['X'] + ); + + $y = Image_Canvas_Tool::bezier( + $t, + $lastPoint['Y'], + $lastPoint['P1Y'], + $lastPoint['P2Y'], + $point['Y'] + ); + + if (!isset($low['X'])) { + $low['X'] = $x; + } else { + $low['X'] = min($x, $low['X']); + } + if (!isset($high['X'])) { + $high['X'] = $x; + } else { + $high['X'] = max($x, $high['X']); + } + if (!isset($low['Y'])) { + $low['Y'] = $y; + } else { + $low['Y'] = min($y, $low['Y']); + } + if (!isset($high['Y'])) { + $high['Y'] = $y; + } else { + $high['Y'] = max($y, $high['Y']); + } + $polygon[] = $x; + $polygon[] = $y; + } + if (($t - $interval) < 1) { + $x = Image_Canvas_Tool::bezier( + 1, + $lastPoint['X'], + $lastPoint['P1X'], + $lastPoint['P2X'], + $point['X'] + ); + + $y = Image_Canvas_Tool::bezier( + 1, + $lastPoint['Y'], + $lastPoint['P1Y'], + $lastPoint['P2Y'], + $point['Y'] + ); + + $polygon[] = $x; + $polygon[] = $y; + } + } + } else { + if (!isset($low['X'])) { + $low['X'] = $point['X']; + } else { + $low['X'] = min($point['X'], $low['X']); + } + if (!isset($high['X'])) { + $high['X'] = $point['X']; + } else { + $high['X'] = max($point['X'], $high['X']); + } + if (!isset($low['Y'])) { + $low['Y'] = $point['Y']; + } else { + $low['Y'] = min($point['Y'], $low['Y']); + } + if (!isset($high['Y'])) { + $high['Y'] = $point['Y']; + } else { + $high['Y'] = max($point['Y'], $high['Y']); + } + + $polygon[] = $point['X']; + $polygon[] = $point['Y']; + } + $lastPoint = $point; + } + + if ((isset($polygon)) && (is_array($polygon))) { + if ($connectEnds) { + if (($fill = $this->_getFillStyle($fillColor, $low['X'], $low['Y'], $high['X'], $high['Y'])) !== false) { + ImageFilledPolygon($this->_canvas, $polygon, count($polygon)/2, $fill); + } + if ($this->_antialias === 'driver') { + $pfirst = $p0 = false; + reset($polygon); + + while (list(, $x) = each($polygon)) { + list(, $y) = each($polygon); + if ($p0 !== false) { + $this->_antialiasedLine($p0['X'], $p0['Y'], $x, $y, $lineColor); + } + if ($pfirst === false) { + $pfirst = array('X' => $x, 'Y' => $y); + } + $p0 = array('X' => $x, 'Y' => $y);; + } + + $this->_antialiasedLine($p0['X'], $p0['Y'], $pfirst['X'], $pfirst['Y'], $lineColor); + } elseif (($line = $this->_getLineStyle($lineColor)) !== false) { + ImagePolygon($this->_canvas, $polygon, count($polygon)/2, $line); + } + } else { + $prev_point = false; + if ($this->_antialias === 'driver') { + reset($polygon); + while (list(, $x) = each($polygon)) { + list(, $y) = each($polygon); + if ($prev_point) { + $this->_antialiasedLine( + $prev_point['X'], + $prev_point['Y'], + $x, + $y, + $lineColor + ); + } + $prev_point = array('X' => $x, 'Y' => $y);; + } + } elseif (($line = $this->_getLineStyle($lineColor)) !== false) { + reset($polygon); + while (list(, $x) = each($polygon)) { + list(, $y) = each($polygon); + if ($prev_point) { + ImageLine( + $this->_canvas, + $prev_point['X'], + $prev_point['Y'], + $x, + $y, + $line + ); + } + $prev_point = array('X' => $x, 'Y' => $y);; + } + } + } + } + + parent::polygon($params); + } + + /** + * Draw a rectangle + * + * Parameter array: + * + * 'x0': int X start point + * + * 'y0': int Y start point + * + * 'x1': int X end point + * + * 'y1': int Y end point + * + * 'fill': mixed [optional] The fill color + * + * 'line': mixed [optional] The line color + * + * @param array $params Parameter array + */ + function rectangle($params) + { + $x0 = $this->_getX($params['x0']); + $y0 = $this->_getY($params['y0']); + $x1 = $this->_getX($params['x1']); + $y1 = $this->_getY($params['y1']); + $fillColor = (isset($params['fill']) ? $params['fill'] : false); + $lineColor = (isset($params['line']) ? $params['line'] : false); + + if (($fill = $this->_getFillStyle($fillColor, $x0, $y0, $x1, $y1)) !== false) { + ImageFilledRectangle($this->_canvas, $x0, $y0, $x1, $y1, $fill); + } + + if (($line = $this->_getLineStyle($lineColor)) !== false) { + ImageRectangle($this->_canvas, $x0, $y0, $x1, $y1, $line); + } + + parent::rectangle($params); + } + + /** + * Draw an ellipse + * + * Parameter array: + * + * 'x': int X center point + * + * 'y': int Y center point + * + * 'rx': int X radius + * + * 'ry': int Y radius + * + * 'fill': mixed [optional] The fill color + * + * 'line': mixed [optional] The line color + * + * @param array $params Parameter array + */ + function ellipse($params) + { + $x = $this->_getX($params['x']); + $y = $this->_getY($params['y']); + $rx = $this->_getX($params['rx']); + $ry = $this->_getY($params['ry']); + $fillColor = (isset($params['fill']) ? $params['fill'] : false); + $lineColor = (isset($params['line']) ? $params['line'] : false); + + if (($fill = $this->_getFillStyle($fillColor, $x - $rx, $y - $ry, $x + $rx, $y + $ry)) !== false) { + ImageFilledEllipse($this->_canvas, $x, $y, $rx * 2, $ry * 2, $fill); + } + + if (($line = $this->_getLineStyle($lineColor)) !== false) { + ImageEllipse($this->_canvas, $x, $y, $rx * 2, $ry * 2, $line); + } + parent::ellipse($params); + } + + /** + * Draw a pie slice + * + * Parameter array: + * + * 'x': int X center point + * + * 'y': int Y center point + * + * 'rx': int X radius + * + * 'ry': int Y radius + * + * 'v1': int The starting angle (in degrees) + * + * 'v2': int The end angle (in degrees) + * + * 'srx': int [optional] Starting X-radius of the pie slice (i.e. for a doughnut) + * + * 'sry': int [optional] Starting Y-radius of the pie slice (i.e. for a doughnut) + * + * 'fill': mixed [optional] The fill color + * + * 'line': mixed [optional] The line color + * + * @param array $params Parameter array + */ + function pieslice($params) + { + $x = $this->_getX($params['x']); + $y = $this->_getY($params['y']); + $rx = $params['rx']; + $ry = $params['ry']; + $v1 = $params['v1']; + $v2 = $params['v2']; + $srx = (isset($params['srx']) ? $params['srx'] : 0); + $sry = (isset($params['sry']) ? $params['sry'] : 0); + $fillColor = (isset($params['fill']) ? $params['fill'] : false); + $lineColor = (isset($params['line']) ? $params['line'] : false); + + $dA = 0.1; + + if (($srx !== false) && ($sry !== false)) { + $angle = max($v1, $v2); + while ($angle >= min($v1, $v2)) { + $polygon[] = ($x + $srx * cos(deg2rad($angle % 360))); + $polygon[] = ($y + $sry * sin(deg2rad($angle % 360))); + $angle -= $dA; + } + if (($angle + $dA) > min($v1, $v2)) { + $polygon[] = ($x + $srx * cos(deg2rad(min($v1, $v2) % 360))); + $polygon[] = ($y + $sry * sin(deg2rad(min($v1, $v2) % 360))); + } + } else { + $polygon[] = $x; + $polygon[] = $y; + } + + $angle = min($v1, $v2); + while ($angle <= max($v1, $v2)) { + $polygon[] = ($x + $rx * cos(deg2rad($angle % 360))); + $polygon[] = ($y + $ry * sin(deg2rad($angle % 360))); + $angle += $dA; + } + + if (($angle - $dA) < max($v1, $v2)) { + $polygon[] = ($x + $rx * cos(deg2rad(max($v1, $v2) % 360))); + $polygon[] = ($y + $ry * sin(deg2rad(max($v1, $v2) % 360))); + } + + if (($fill = $this->_getFillStyle($fillColor, $x - $rx - 1, $y - $ry - 1, $x + $rx + 1, $y + $ry + 1)) !== false) { + ImageFilledPolygon($this->_canvas, $polygon, count($polygon) / 2, $fill); + } + + if (($line = $this->_getLineStyle($lineColor)) !== false) { + ImagePolygon($this->_canvas, $polygon, count($polygon) / 2, $line); + } + + parent::pieSlice($params); + } + + /** + * Get the width of a text, + * + * @param string $text The text to get the width of + * @return int The width of the text + */ + function textWidth($text) + { + if (isset($this->_font['file'])) { + $angle = 0; + if (isset($this->_font['angle'])) { + $angle = $this->_font['angle']; + } + + $width = 0; + $lines = explode("\n", $text); + foreach ($lines as $line) { + $bounds = ImageTTFBBox( + $this->_font['size'], + $angle, + $this->_font['file'], + $text + ); + + $x0 = min($bounds[0], $bounds[2], $bounds[4], $bounds[6]); + $x1 = max($bounds[0], $bounds[2], $bounds[4], $bounds[6]); + $width = max(abs($x0 - $x1), $width); + } + return $width; + } else { + if ((isset($this->_font['vertical'])) && ($this->_font['vertical'])) { + return ImageFontHeight($this->_font['font']) * (substr_count($text, "\n") + 1); + } else { + $width = 0; + $lines = explode("\n", $text); + foreach ($lines as $line) { + $width = max($width, ImageFontWidth($this->_font['font']) * strlen($line)); + } + return $width; + } + } + } + + /** + * Get the height of a text. + * + * Note! This method can give some peculiar results, since ImageTTFBBox() returns the total + * bounding box of a text, where ImageTTF() writes the text on the baseline of the text, that + * is 'g', 'p', 'q' and other letters that dig under the baseline will appear to have a larger + * height than they actually do. Have a look at the tests/text.php test case - the first two + * columns, 'left and 'center', both look alright, whereas the last column, 'right', appear + * with a larger space between the first text and the second. This is because the total height + * is actually smaller by exactly the number of pixels that the 'g' digs under the baseline. + * Remove the 'g' from the text and they appear correct. + * + * @param string $text The text to get the height of + * @param bool $force Force the method to calculate the size + * @return int The height of the text + */ + function textHeight($text, $force = false) + { + if (isset($this->_font['file'])) { + $angle = 0; + if (isset($this->_font['angle'])) { + $angle = $this->_font['angle']; + } + + $linebreaks = substr_count($text, "\n"); + if (($angle == 0) && ($linebreaks == 0) && ($force === false)) { + /* + * if the angle is 0 simply return the size, due to different + * heights for example for x-axis labels, making the labels + * _not_ appear as written on the same baseline + */ + return $this->_font['size'] + 2; + } + + $height = 0; + $lines = explode("\n", $text); + foreach ($lines as $line) { + $bounds = ImageTTFBBox( + $this->_font['size'], + $angle, + $this->_font['file'], + $line + ); + + $y0 = min($bounds[1], $bounds[3], $bounds[5], $bounds[7]); + $y1 = max($bounds[1], $bounds[3], $bounds[5], $bounds[7]); + $height += abs($y0 - $y1); + } + return $height + $linebreaks * 2; + } else { + if ((isset($this->_font['vertical'])) && ($this->_font['vertical'])) { + $width = 0; + $lines = explode("\n", $text); + foreach ($lines as $line) { + $width = max($width, ImageFontWidth($this->_font['font']) * strlen($line)); + } + return $width; + } else { + return ImageFontHeight($this->_font['font']) * (substr_count($text, "\n") + 1); + } + } + } + + /** + * Writes text + * + * Parameter array: + * + * 'x': int X-point of text + * + * 'y': int Y-point of text + * + * 'text': string The text to add + * + * 'alignment': array [optional] Alignment + * + * 'color': mixed [optional] The color of the text + */ + function addText($params) + { + $x0 = $this->_getX($params['x']); + $y0 = $this->_getY($params['y']); + $text = $params['text']; + $color = (isset($params['color']) ? $params['color'] : false); + $alignment = (isset($params['alignment']) ? $params['alignment'] : false); + + $text = str_replace("\r", '', $text); + + if (!is_array($alignment)) { + $alignment = array('vertical' => 'top', 'horizontal' => 'left'); + } + + if (!isset($alignment['vertical'])) { + $alignment['vertical'] = 'top'; + } + + if (!isset($alignment['horizontal'])) { + $alignment['horizontal'] = 'left'; + } + + if ($alignment['vertical'] == 'bottom') { + $y0 = $y0 - $this->textHeight($text, true); + } elseif ($alignment['vertical'] == 'center') { + $y0 = $y0 - ($this->textHeight($text, true) / 2); + } + + $lines = explode("\n", $text); + foreach ($lines as $line) { + $textWidth = $this->textWidth($line); + $textHeight = $this->textHeight($line, true); + + $x = $x0; + $y = $y0; + + $y0 += $textHeight + 2; + + if ($alignment['horizontal'] == 'right') { + $x = $x - $textWidth; + } elseif ($alignment['horizontal'] == 'center') { + $x = $x - ($textWidth / 2); + } + + if (($color === false) && (isset($this->_font['color']))) { + $color = $this->_font['color']; + } + + if ($color != 'transparent') { + if (isset($this->_font['file'])) { + if (($this->_font['angle'] < 180) && ($this->_font['angle'] >= 0)) { + $y += $textHeight; + } + if (($this->_font['angle'] >= 90) && ($this->_font['angle'] < 270)) { + $x += $textWidth; + } + + ImageTTFText( + $this->_canvas, + $this->_font['size'], + $this->_font['angle'], + $x, + $y, + $this->_color($color), + $this->_font['file'], + $line + ); + + } else { + if ((isset($this->_font['vertical'])) && ($this->_font['vertical'])) { + ImageStringUp( + $this->_canvas, + $this->_font['font'], + $x, + $y + $this->textHeight($text), + $line, + $this->_color($color) + ); + } else { + ImageString( + $this->_canvas, + $this->_font['font'], + $x, + $y, + $line, + $this->_color($color) + ); + } + } + } + } + parent::addText($params); + } + + /** + * Overlay image + * + * Parameter array: + * + * 'x': int X-point of overlayed image + * + * 'y': int Y-point of overlayed image + * + * 'filename': string The filename of the image to overlay + * + * 'width': int [optional] The width of the overlayed image (resizing if possible) + * + * 'height': int [optional] The height of the overlayed image (resizing if possible) + * + * 'alignment': array [optional] Alignment + */ + function image($params) + { + $x = $this->_getX($params['x']); + $y = $this->_getY($params['y']); + $filename = $params['filename']; + $width = (isset($params['width']) ? $params['width'] : false); + $height = (isset($params['height']) ? $params['height'] : false); + $alignment = (isset($params['alignment']) ? $params['alignment'] : false); + + if (!is_array($alignment)) { + $alignment = array('vertical' => 'top', 'horizontal' => 'left'); + } + + if (!isset($alignment['vertical'])) { + $alignment['vertical'] = 'top'; + } + + if (!isset($alignment['horizontal'])) { + $alignment['horizontal'] = 'left'; + } + + if (file_exists($filename)) { + if (strtolower(substr($filename, -4)) == '.png') { + $image = ImageCreateFromPNG($filename); + } elseif (strtolower(substr($filename, -4)) == '.gif') { + $image = ImageCreateFromGIF($filename); + } else { + $image = ImageCreateFromJPEG($filename); + } + + $imgWidth = ImageSX($image); + $imgHeight = ImageSY($image); + + $outputWidth = ($width !== false ? $width : $imgWidth); + $outputHeight = ($height !== false ? $height : $imgHeight); + + if ($alignment['horizontal'] == 'right') { + $x -= $outputWidth; + } elseif ($alignment['horizontal'] == 'center') { + $x -= $outputWidth / 2; + } + + if ($alignment['vertical'] == 'bottom') { + $y -= $outputHeight; + } elseif ($alignment['vertical'] == 'center') { + $y -= $outputHeight / 2; + } + + if ((($width !== false) && ($width != $imgWidth)) || + (($height !== false) && ($height != $imgHeight))) + { + if ($this->_gd2) { + ImageCopyResampled( + $this->_canvas, + $image, + $x, + $y, + 0, + 0, + $width, + $height, + $imgWidth, + $imgHeight + ); + } else { + ImageCopyResized( + $this->_canvas, + $image, + $x, + $y, + 0, + 0, + $width, + $height, + $imgWidth, + $imgHeight + ); + } + } else { + ImageCopy( + $this->_canvas, + $image, + $x, + $y, + 0, + 0, + $imgWidth, + $imgHeight + ); + } + ImageDestroy($image); + } + parent::image($params); + } + + /** + * Set clipping to occur + * + * Parameter array: + * + * 'x0': int X point of Upper-left corner + * 'y0': int X point of Upper-left corner + * 'x1': int X point of lower-right corner + * 'y1': int Y point of lower-right corner + */ + function setClipping($params = false) + { + if ($params === false) { + $index = count($this->_clipping) - 1; + if (isset($this->_clipping[$index])) { + $params = $this->_clipping[$index]; + $canvas = $params['canvas']; + ImageCopy( + $canvas, + $this->_canvas, + min($params['x0'], $params['x1']), + min($params['y0'], $params['y1']), + min($params['x0'], $params['x1']), + min($params['y0'], $params['y1']), + abs($params['x1'] - $params['x0'] + 1), + abs($params['y1'] - $params['y0'] + 1) + ); + $this->_canvas = $canvas; + unset($this->_clipping[$index]); + } + } + else { + $params['canvas'] = $this->_canvas; + + if ($this->_gd2) { + $this->_canvas = ImageCreateTrueColor( + $this->_width, + $this->_height + ); + if ($this->_alpha) { + ImageAlphaBlending($this->_canvas, true); + } + } else { + $this->_canvas = ImageCreate($this->_width, $this->_height); + } + + if (($this->_gd2) && ($this->_antialias === 'native')) { + ImageAntialias($this->_canvas, true); + } + + ImageCopy($this->_canvas, $params['canvas'], 0, 0, 0, 0, $this->_width, $this->_height); + + $this->_clipping[count($this->_clipping)] = $params; + } + } + + /** + * Get a canvas specific HTML tag. + * + * This method implicitly saves the canvas to the filename in the + * filesystem path specified and parses it as URL specified by URL path + * + * Parameter array: + * + * 'filename' string + * + * 'filepath': string Path to the file on the file system. Remember the final slash + * + * 'urlpath': string Path to the file available through an URL. Remember the final slash + * + * 'alt': string [optional] Alternative text on image + * + * 'cssclass': string [optional] The CSS Stylesheet class + * + * 'border': int [optional] The border width on the image + */ + function toHtml($params) + { + parent::toHtml($params); + return '<img src="' . $params['urlpath'] . $params['filename'] . '"' . + (isset($params['alt']) ? ' alt="' . $params['alt'] . '"' : '') . + (isset($params['cssclass']) ? ' class="' . $params['cssclass'] . '"' : '') . + (isset($params['border']) ? ' border="' . $params['border'] . '"' : '') . + (isset($this->_imageMap) ? ' usemap="#' . $params['filename'] . '"' : '') . '>' . + (isset($this->_imageMap) ? "\n" . $this->_imageMap->toHtml(array('name' => $params['filename'])) : ''); + } + + /** + * Resets the canvas. + * + * Include fillstyle, linestyle, thickness and polygon + * @access private + */ + function _reset() + { + if ($this->_gd2) { + ImageSetThickness($this->_canvas, 1); + } + if ($this->_tileImage != null) { + ImageDestroy($this->_tileImage); + $this->_tileImage = null; + } + parent::_reset(); + $this->_font = array('font' => 1, 'color' => 'black'); + } + + /** + * Check which version of GD is installed + * + * @return int 0 if GD isn't installed, 1 if GD 1.x is installed and 2 if GD + * 2.x is installed + * @access private + */ + function _version() + { + $result = false; + if (function_exists('gd_info')) { + $info = gd_info(); + $version = $info['GD Version']; + } else { + ob_start(); + phpinfo(8); + $php_info = ob_get_contents(); + ob_end_clean(); + + if (ereg("<td[^>]*>GD Version *<\/td><td[^>]*>([^<]*)<\/td>", + $php_info, $result)) + { + $version = $result[1]; + } + } + + if (ereg('1\.[0-9]{1,2}', $version)) { + return 1; + } elseif (ereg('2\.[0-9]{1,2}', $version)) { + return 2; + } else { + return 0; + } + } + +} + +?>
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