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<?php |
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/** |
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##DOC-SIGNATURE## |
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This file is part of WideImage. |
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WideImage is free software; you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License as published by |
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the Free Software Foundation; either version 2.1 of the License, or |
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(at your option) any later version. |
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WideImage 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 |
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GNU Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public License |
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along with WideImage; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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* @package WideImage |
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**/ |
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namespace WideImage; |
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use WideImage\Font; |
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use WideImage\Exception\InvalidFontFileException; |
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use WideImage\Exception\NoFontException; |
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use WideImage\Exception\InvalidCanvasMethodException; |
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/** |
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* @package WideImage |
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*/ |
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class Canvas |
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{ |
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protected $handle = 0; |
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protected $image = null; |
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protected $font = null; |
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/** |
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* Creates a canvas object that writes to the image passed as a parameter |
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* |
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* Shouldn't be used directly, use \WideImage\Image::getCanvas() instead. |
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* |
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* @param \WideImage\Image $img Image object |
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*/ |
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public function __construct($img) |
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{ |
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$this->handle = $img->getHandle(); |
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$this->image = $img; |
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} |
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/** |
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* Sets the active font. Can be an instance of |
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* \WideImage\Font\TTF, \WideImage\Font\PS, or \WideImage\Font\GDF. |
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* |
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* @param object $font Font object to set for writeText() |
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*/ |
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public function setFont($font) |
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{ |
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$this->font = $font; |
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} |
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/** |
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* Creates and sets the current font |
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* |
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* The supported font types are: TTF/OTF, PS, and GDF. |
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* Font type is detected from the extension. If the $file parameter doesn't have an extension, TTF font is presumed. |
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* |
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* Note: not all parameters are supported by all fonts. |
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* |
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* @param string $file Font file name (string) |
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* @param int $size Font size (supported for TTF/OTF and PS fonts, ignored for GDF) |
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* @param int $color Text color |
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* @param int $bgcolor Background color (supported only for PS font, ignored for TTF and PS) |
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* @return mixed One of the \WideImage\Font\* objects |
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*/ |
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public function useFont($file, $size = 12, $color = 0, $bgcolor = null) |
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{ |
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$p = strrpos($file, '.'); |
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if ($p === false || $p < strlen($file) - 4) { |
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$ext = 'ttf'; |
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} else { |
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$ext = strtolower(substr($file, $p + 1)); |
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} |
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if ($ext == 'ttf' || $ext == 'otf') { |
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$font = new Font\TTF($file, $size, $color); |
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} elseif ($ext == 'ps') { |
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$font = new Font\PS($file, $size, $color, $bgcolor); |
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} elseif ($ext == 'gdf') { |
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$font = new Font\GDF($file, $color); |
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} else { |
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throw new InvalidFontFileException("'$file' appears to be an invalid font file."); |
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} |
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$this->setFont($font); |
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return $font; |
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} |
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/** |
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* Write text on the image at specified position |
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* |
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* You must set a font with a call to \WideImage\Canvas::setFont() prior to writing text to the image. |
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* |
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* Smart coordinates are supported for $x and $y arguments, but currently only for TTF/OTF fonts. |
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* |
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* Example: |
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* <code> |
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* $img = WideImage::load('pic.jpg'); |
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* $canvas = $img->getCanvas(); |
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* $canvas->useFont('Verdana.ttf', 16, $img->allocateColor(255, 0, 0)); |
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* $canvas->writeText('right', 'bottom', 'www.website.com'); |
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* </code> |
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* |
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* @param int $x Left |
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* @param int $y Top |
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* @param string $text Text to write |
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* @param int $angle The angle, defaults to 0 |
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*/ |
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public function writeText($x, $y, $text, $angle = 0) |
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{ |
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if ($this->font === null) { |
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throw new NoFontException("Can't write text without a font."); |
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} |
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$angle = - floatval($angle); |
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if ($angle < 0) { |
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$angle = 360 + $angle; |
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} |
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$angle = $angle % 360; |
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$this->font->writeText($this->image, $x, $y, $text, $angle); |
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} |
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/** |
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* A magic method that allows you to call any PHP function that starts with "image". |
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* |
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* This is a shortcut to call custom functions on the image handle. |
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* |
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* Example: |
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* <code> |
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* $img = WideImage::load('pic.jpg'); |
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* $canvas = $img->getCanvas(); |
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* $canvas->filledRect(10, 10, 20, 30, $img->allocateColor(0, 0, 0)); |
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* $canvas->line(60, 80, 30, 100, $img->allocateColor(255, 0, 0)); |
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* </code> |
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*/ |
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function __call($method, $params) |
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{ |
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if (function_exists('image' . $method)) { |
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array_unshift($params, $this->handle); |
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call_user_func_array('image' . $method, $params); |
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} else { |
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throw new InvalidCanvasMethodException("Function doesn't exist: image{$method}."); |
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} |
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} |
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} |
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XOOPS /
XoopsCore25
Loading history...
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..