Font.php

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<?php
class PHPExcel_Shared_Font
{
        /* Methods for resolving autosize value */
        const AUTOSIZE_METHOD_APPROX    = 'approx';
        const AUTOSIZE_METHOD_EXACT             = 'exact';
 
        private static $_autoSizeMethods = array(
                self::AUTOSIZE_METHOD_APPROX,
                self::AUTOSIZE_METHOD_EXACT,
        );
 
        const CHARSET_ANSI_LATIN                                = 0x00;
        const CHARSET_SYSTEM_DEFAULT                    = 0x01;
        const CHARSET_SYMBOL                                    = 0x02;
        const CHARSET_APPLE_ROMAN                               = 0x4D;
        const CHARSET_ANSI_JAPANESE_SHIFTJIS    = 0x80;
        const CHARSET_ANSI_KOREAN_HANGUL                = 0x81;
        const CHARSET_ANSI_KOREAN_JOHAB                 = 0x82;
        const CHARSET_ANSI_CHINESE_SIMIPLIFIED  = 0x86;         //      gb2312
        const CHARSET_ANSI_CHINESE_TRADITIONAL  = 0x88;         //      big5
        const CHARSET_ANSI_GREEK                                = 0xA1;
        const CHARSET_ANSI_TURKISH                              = 0xA2;
        const CHARSET_ANSI_VIETNAMESE                   = 0xA3;
        const CHARSET_ANSI_HEBREW                               = 0xB1;
        const CHARSET_ANSI_ARABIC                               = 0xB2;
        const CHARSET_ANSI_BALTIC                               = 0xBA;
        const CHARSET_ANSI_CYRILLIC                             = 0xCC;
        const CHARSET_ANSI_THAI                                 = 0xDD;
        const CHARSET_ANSI_LATIN_II                             = 0xEE;
        const CHARSET_OEM_LATIN_I                               = 0xFF;
 
        //  XXX: Constants created!
        const ARIAL                                                             = 'arial.ttf';
        const ARIAL_BOLD                                                = 'arialbd.ttf';
        const ARIAL_ITALIC                                              = 'ariali.ttf';
        const ARIAL_BOLD_ITALIC                                 = 'arialbi.ttf';
 
        const CALIBRI                                                   = 'CALIBRI.TTF';
        const CALIBRI_BOLD                                              = 'CALIBRIB.TTF';
        const CALIBRI_ITALIC                                    = 'CALIBRII.TTF';
        const CALIBRI_BOLD_ITALIC                               = 'CALIBRIZ.TTF';
 
        const COMIC_SANS_MS                                             = 'comic.ttf';
        const COMIC_SANS_MS_BOLD                                = 'comicbd.ttf';
 
        const COURIER_NEW                                               = 'cour.ttf';
        const COURIER_NEW_BOLD                                  = 'courbd.ttf';
        const COURIER_NEW_ITALIC                                = 'couri.ttf';
        const COURIER_NEW_BOLD_ITALIC                   = 'courbi.ttf';
 
        const GEORGIA                                                   = 'georgia.ttf';
        const GEORGIA_BOLD                                              = 'georgiab.ttf';
        const GEORGIA_ITALIC                                    = 'georgiai.ttf';
        const GEORGIA_BOLD_ITALIC                               = 'georgiaz.ttf';
 
        const IMPACT                                                    = 'impact.ttf';
 
        const LIBERATION_SANS                                   = 'LiberationSans-Regular.ttf';
        const LIBERATION_SANS_BOLD                              = 'LiberationSans-Bold.ttf';
        const LIBERATION_SANS_ITALIC                    = 'LiberationSans-Italic.ttf';
        const LIBERATION_SANS_BOLD_ITALIC               = 'LiberationSans-BoldItalic.ttf';
 
        const LUCIDA_CONSOLE                                    = 'lucon.ttf';
        const LUCIDA_SANS_UNICODE                               = 'l_10646.ttf';
 
        const MICROSOFT_SANS_SERIF                              = 'micross.ttf';
 
        const PALATINO_LINOTYPE                                 = 'pala.ttf';
        const PALATINO_LINOTYPE_BOLD                    = 'palab.ttf';
        const PALATINO_LINOTYPE_ITALIC                  = 'palai.ttf';
        const PALATINO_LINOTYPE_BOLD_ITALIC             = 'palabi.ttf';
 
        const SYMBOL                                                    = 'symbol.ttf';
 
        const TAHOMA                                                    = 'tahoma.ttf';
        const TAHOMA_BOLD                                               = 'tahomabd.ttf';
 
        const TIMES_NEW_ROMAN                                   = 'times.ttf';
        const TIMES_NEW_ROMAN_BOLD                              = 'timesbd.ttf';
        const TIMES_NEW_ROMAN_ITALIC                    = 'timesi.ttf';
        const TIMES_NEW_ROMAN_BOLD_ITALIC               = 'timesbi.ttf';
 
        const TREBUCHET_MS                                              = 'trebuc.ttf';
        const TREBUCHET_MS_BOLD                                 = 'trebucbd.ttf';
        const TREBUCHET_MS_ITALIC                               = 'trebucit.ttf';
        const TREBUCHET_MS_BOLD_ITALIC                  = 'trebucbi.ttf';
 
        const VERDANA                                                   = 'verdana.ttf';
        const VERDANA_BOLD                                              = 'verdanab.ttf';
        const VERDANA_ITALIC                                    = 'verdanai.ttf';
        const VERDANA_BOLD_ITALIC                               = 'verdanaz.ttf';
 
        private static $autoSizeMethod = self::AUTOSIZE_METHOD_APPROX;
 
        private static $trueTypeFontPath = null;
 
        public static $defaultColumnWidths = array(
                'Arial' => array(
                         1 => array('px' => 24, 'width' => 12.00000000),
                         2 => array('px' => 24, 'width' => 12.00000000),
                         3 => array('px' => 32, 'width' => 10.66406250),
                         4 => array('px' => 32, 'width' => 10.66406250),
                         5 => array('px' => 40, 'width' => 10.00000000),
                         6 => array('px' => 48, 'width' =>  9.59765625),
                         7 => array('px' => 48, 'width' =>  9.59765625),
                         8 => array('px' => 56, 'width' =>  9.33203125),
                         9 => array('px' => 64, 'width' =>  9.14062500),
                        10 => array('px' => 64, 'width' =>  9.14062500),
                ),
                'Calibri' => array(
                         1 => array('px' => 24, 'width' => 12.00000000),
                         2 => array('px' => 24, 'width' => 12.00000000),
                         3 => array('px' => 32, 'width' => 10.66406250),
                         4 => array('px' => 32, 'width' => 10.66406250),
                         5 => array('px' => 40, 'width' => 10.00000000),
                         6 => array('px' => 48, 'width' =>  9.59765625),
                         7 => array('px' => 48, 'width' =>  9.59765625),
                         8 => array('px' => 56, 'width' =>  9.33203125),
                         9 => array('px' => 56, 'width' =>  9.33203125),
                        10 => array('px' => 64, 'width' =>  9.14062500),
                        11 => array('px' => 64, 'width' =>  9.14062500),
                ),
                'Verdana' => array(
                         1 => array('px' => 24, 'width' => 12.00000000),
                         2 => array('px' => 24, 'width' => 12.00000000),
                         3 => array('px' => 32, 'width' => 10.66406250),
                         4 => array('px' => 32, 'width' => 10.66406250),
                         5 => array('px' => 40, 'width' => 10.00000000),
                         6 => array('px' => 48, 'width' =>  9.59765625),
                         7 => array('px' => 48, 'width' =>  9.59765625),
                         8 => array('px' => 64, 'width' =>  9.14062500),
                         9 => array('px' => 72, 'width' =>  9.00000000),
                        10 => array('px' => 72, 'width' =>  9.00000000),
                ),
        );
 
        public static function setAutoSizeMethod($pValue = self::AUTOSIZE_METHOD_APPROX)
        {
                if (!in_array($pValue,self::$_autoSizeMethods)) {
                        return FALSE;
                }
                self::$autoSizeMethod = $pValue;
 
                return TRUE;
        }
 
        public static function getAutoSizeMethod()
        {
                return self::$autoSizeMethod;
        }
 
        public static function setTrueTypeFontPath($pValue = '')
        {
                self::$trueTypeFontPath = $pValue;
        }
 
        public static function getTrueTypeFontPath()
        {
                return self::$trueTypeFontPath;
        }
 
        public static function calculateColumnWidth(PHPExcel_Style_Font $font, $cellText = '', $rotation = 0, PHPExcel_Style_Font $defaultFont = null) {
                // If it is rich text, use plain text
                if ($cellText instanceof PHPExcel_RichText) {
                        $cellText = $cellText->getPlainText();
                }
 
                // Special case if there are one or more newline characters ("\n")
                if (strpos($cellText, "\n") !== false) {
                        $lineTexts = explode("\n", $cellText);
                        $lineWidths = array();
                        foreach ($lineTexts as $lineText) {
                                $lineWidths[] = self::calculateColumnWidth($font, $lineText, $rotation = 0, $defaultFont);
                        }
                        return max($lineWidths); // width of longest line in cell
                }
 
                // Try to get the exact text width in pixels
        $approximate = self::$autoSizeMethod == self::AUTOSIZE_METHOD_APPROX;
        if (!$approximate) {
            $columnWidthAdjust = ceil(self::getTextWidthPixelsExact('n', $font, 0) * 1.07);
            try {
                // Width of text in pixels excl. padding
                // and addition because Excel adds some padding, just use approx width of 'n' glyph
                $columnWidth = self::getTextWidthPixelsExact($cellText, $font, $rotation) + $columnWidthAdjust;
            } catch (PHPExcel_Exception $e) {
                $approximate = true;
            }
        }
 
        if ($approximate) {
            $columnWidthAdjust = self::getTextWidthPixelsApprox('n', $font, 0);
                        // Width of text in pixels excl. padding, approximation
                        // and addition because Excel adds some padding, just use approx width of 'n' glyph
                        $columnWidth = self::getTextWidthPixelsApprox($cellText, $font, $rotation) + $columnWidthAdjust;
        }
 
                // Convert from pixel width to column width
                $columnWidth = PHPExcel_Shared_Drawing::pixelsToCellDimension($columnWidth, $defaultFont);
 
                // Return
                return round($columnWidth, 6);
        }
 
        public static function getTextWidthPixelsExact($text, PHPExcel_Style_Font $font, $rotation = 0) {
                if (!function_exists('imagettfbbox')) {
                        throw new PHPExcel_Exception('GD library needs to be enabled');
                }
 
                // font size should really be supplied in pixels in GD2,
                // but since GD2 seems to assume 72dpi, pixels and points are the same
                $fontFile = self::getTrueTypeFontFileFromFont($font);
                $textBox = imagettfbbox($font->getSize(), $rotation, $fontFile, $text);
 
                // Get corners positions
                $lowerLeftCornerX  = $textBox[0];
//              $lowerLeftCornerY  = $textBox[1];
                $lowerRightCornerX = $textBox[2];
//              $lowerRightCornerY = $textBox[3];
                $upperRightCornerX = $textBox[4];
//              $upperRightCornerY = $textBox[5];
                $upperLeftCornerX  = $textBox[6];
//              $upperLeftCornerY  = $textBox[7];
 
                // Consider the rotation when calculating the width
                $textWidth = max($lowerRightCornerX - $upperLeftCornerX, $upperRightCornerX - $lowerLeftCornerX);
 
                return $textWidth;
        }
 
        public static function getTextWidthPixelsApprox($columnText, PHPExcel_Style_Font $font = null, $rotation = 0)
        {
                $fontName = $font->getName();
                $fontSize = $font->getSize();
 
                // Calculate column width in pixels. We assume fixed glyph width. Result varies with font name and size.
                switch ($fontName) {
                        case 'Calibri':
                                // value 8.26 was found via interpolation by inspecting real Excel files with Calibri 11 font.
                                $columnWidth = (int) (8.26 * PHPExcel_Shared_String::CountCharacters($columnText));
                                $columnWidth = $columnWidth * $fontSize / 11; // extrapolate from font size
                                break;
 
                        case 'Arial':
                                // value 7 was found via interpolation by inspecting real Excel files with Arial 10 font.
//                              $columnWidth = (int) (7 * PHPExcel_Shared_String::CountCharacters($columnText));
                // value 8 was set because of experience in different exports at Arial 10 font.
                                $columnWidth = (int) (8 * PHPExcel_Shared_String::CountCharacters($columnText));
                                $columnWidth = $columnWidth * $fontSize / 10; // extrapolate from font size
                break;
 
                        case 'Verdana':
                                // value 8 was found via interpolation by inspecting real Excel files with Verdana 10 font.
                                $columnWidth = (int) (8 * PHPExcel_Shared_String::CountCharacters($columnText));
                                $columnWidth = $columnWidth * $fontSize / 10; // extrapolate from font size
                                break;
 
                        default:
                                // just assume Calibri
                                $columnWidth = (int) (8.26 * PHPExcel_Shared_String::CountCharacters($columnText));
                                $columnWidth = $columnWidth * $fontSize / 11; // extrapolate from font size
                                break;
                }
 
                // Calculate approximate rotated column width
                if ($rotation !== 0) {
                        if ($rotation == -165) {
                                // stacked text
                                $columnWidth = 4; // approximation
                        } else {
                                // rotated text
                                $columnWidth = $columnWidth * cos(deg2rad($rotation))
                                                                + $fontSize * abs(sin(deg2rad($rotation))) / 5; // approximation
                        }
                }
 
                // pixel width is an integer
                return (int) $columnWidth;
        }
 
        public static function fontSizeToPixels($fontSizeInPoints = 11) {
                return (int) ((4 / 3) * $fontSizeInPoints);
        }
 
        public static function inchSizeToPixels($sizeInInch = 1) {
                return ($sizeInInch * 96);
        }
 
        public static function centimeterSizeToPixels($sizeInCm = 1) {
                return ($sizeInCm * 37.795275591);
        }
 
        public static function getTrueTypeFontFileFromFont($font) {
                if (!file_exists(self::$trueTypeFontPath) || !is_dir(self::$trueTypeFontPath)) {
                        throw new PHPExcel_Exception('Valid directory to TrueType Font files not specified');
                }
 
                $name           = $font->getName();
                $bold           = $font->getBold();
                $italic         = $font->getItalic();
 
                // Check if we can map font to true type font file
                switch ($name) {
                        case 'Arial':
                                $fontFile = (
                                        $bold ? ($italic ? self::ARIAL_BOLD_ITALIC : self::ARIAL_BOLD)
                                                  : ($italic ? self::ARIAL_ITALIC : self::ARIAL)
                                );
                                break;
 
                        case 'Calibri':
                                $fontFile = (
                                        $bold ? ($italic ? self::CALIBRI_BOLD_ITALIC : self::CALIBRI_BOLD)
                                                  : ($italic ? self::CALIBRI_ITALIC : self::CALIBRI)
                                );
                                break;
 
                        case 'Courier New':
                                $fontFile = (
                                        $bold ? ($italic ? self::COURIER_NEW_BOLD_ITALIC : self::COURIER_NEW_BOLD)
                                                  : ($italic ? self::COURIER_NEW_ITALIC : self::COURIER_NEW)
                                );
                                break;
 
                        case 'Comic Sans MS':
                                $fontFile = (
                                        $bold ? self::COMIC_SANS_MS_BOLD : self::COMIC_SANS_MS
                                );
                                break;
 
                        case 'Georgia':
                                $fontFile = (
                                        $bold ? ($italic ? self::GEORGIA_BOLD_ITALIC : self::GEORGIA_BOLD)
                                                  : ($italic ? self::GEORGIA_ITALIC : self::GEORGIA)
                                );
                                break;
 
                        case 'Impact':
                                $fontFile = self::IMPACT;
                                break;
 
                        case 'Liberation Sans':
                                $fontFile = (
                                        $bold ? ($italic ? self::LIBERATION_SANS_BOLD_ITALIC : self::LIBERATION_SANS_BOLD)
                                                  : ($italic ? self::LIBERATION_SANS_ITALIC : self::LIBERATION_SANS)
                                );
                                break;
 
                        case 'Lucida Console':
                                $fontFile = self::LUCIDA_CONSOLE;
                                break;
 
                        case 'Lucida Sans Unicode':
                                $fontFile = self::LUCIDA_SANS_UNICODE;
                                break;
 
                        case 'Microsoft Sans Serif':
                                $fontFile = self::MICROSOFT_SANS_SERIF;
                                break;
 
                        case 'Palatino Linotype':
                                $fontFile = (
                                        $bold ? ($italic ? self::PALATINO_LINOTYPE_BOLD_ITALIC : self::PALATINO_LINOTYPE_BOLD)
                                                  : ($italic ? self::PALATINO_LINOTYPE_ITALIC : self::PALATINO_LINOTYPE)
                                );
                                break;
 
                        case 'Symbol':
                                $fontFile = self::SYMBOL;
                                break;
 
                        case 'Tahoma':
                                $fontFile = (
                                        $bold ? self::TAHOMA_BOLD : self::TAHOMA
                                );
                                break;
 
                        case 'Times New Roman':
                                $fontFile = (
                                        $bold ? ($italic ? self::TIMES_NEW_ROMAN_BOLD_ITALIC : self::TIMES_NEW_ROMAN_BOLD)
                                                  : ($italic ? self::TIMES_NEW_ROMAN_ITALIC : self::TIMES_NEW_ROMAN)
                                );
                                break;
 
                        case 'Trebuchet MS':
                                $fontFile = (
                                        $bold ? ($italic ? self::TREBUCHET_MS_BOLD_ITALIC : self::TREBUCHET_MS_BOLD)
                                                  : ($italic ? self::TREBUCHET_MS_ITALIC : self::TREBUCHET_MS)
                                );
                                break;
 
                        case 'Verdana':
                                $fontFile = (
                                        $bold ? ($italic ? self::VERDANA_BOLD_ITALIC : self::VERDANA_BOLD)
                                                  : ($italic ? self::VERDANA_ITALIC : self::VERDANA)
                                );
                                break;
 
                        default:
                                throw new PHPExcel_Exception('Unknown font name "'. $name .'". Cannot map to TrueType font file');
                                break;
                }
 
                $fontFile = self::$trueTypeFontPath . $fontFile;
 
                // Check if file actually exists
                if (!file_exists($fontFile)) {
                        throw New PHPExcel_Exception('TrueType Font file not found');
                }
 
                return $fontFile;
        }
 
        public static function getCharsetFromFontName($name)
        {
                switch ($name) {
                        // Add more cases. Check FONT records in real Excel files.
                        case 'EucrosiaUPC':             return self::CHARSET_ANSI_THAI;
                        case 'Wingdings':               return self::CHARSET_SYMBOL;
                        case 'Wingdings 2':             return self::CHARSET_SYMBOL;
                        case 'Wingdings 3':             return self::CHARSET_SYMBOL;
                        default:                                return self::CHARSET_ANSI_LATIN;
                }
        }
 
        public static function getDefaultColumnWidthByFont(PHPExcel_Style_Font $font, $pPixels = false)
        {
                if (isset(self::$defaultColumnWidths[$font->getName()][$font->getSize()])) {
                        // Exact width can be determined
                        $columnWidth = $pPixels ?
                                self::$defaultColumnWidths[$font->getName()][$font->getSize()]['px']
                                        : self::$defaultColumnWidths[$font->getName()][$font->getSize()]['width'];
 
                } else {
                        // We don't have data for this particular font and size, use approximation by
                        // extrapolating from Calibri 11
                        $columnWidth = $pPixels ?
                                self::$defaultColumnWidths['Calibri'][11]['px']
                                        : self::$defaultColumnWidths['Calibri'][11]['width'];
                        $columnWidth = $columnWidth * $font->getSize() / 11;
 
                        // Round pixels to closest integer
                        if ($pPixels) {
                                $columnWidth = (int) round($columnWidth);
                        }
                }
 
                return $columnWidth;
        }
 
        public static function getDefaultRowHeightByFont(PHPExcel_Style_Font $font)
        {
                switch ($font->getName()) {
                        case 'Arial':
                                switch ($font->getSize()) {
                                        case 10:
                                                // inspection of Arial 10 workbook says 12.75pt ~17px
                                                $rowHeight = 12.75;
                                                break;
 
                                        case 9:
                                                // inspection of Arial 9 workbook says 12.00pt ~16px
                                                $rowHeight = 12;
                                                break;
 
                                        case 8:
                                                // inspection of Arial 8 workbook says 11.25pt ~15px
                                                $rowHeight = 11.25;
                                                break;
 
                                        case 7:
                                                // inspection of Arial 7 workbook says 9.00pt ~12px
                                                $rowHeight = 9;
                                                break;
 
                                        case 6:
                                        case 5:
                                                // inspection of Arial 5,6 workbook says 8.25pt ~11px
                                                $rowHeight = 8.25;
                                                break;
 
                                        case 4:
                                                // inspection of Arial 4 workbook says 6.75pt ~9px
                                                $rowHeight = 6.75;
                                                break;
 
                                        case 3:
                                                // inspection of Arial 3 workbook says 6.00pt ~8px
                                                $rowHeight = 6;
                                                break;
 
                                        case 2:
                                        case 1:
                                                // inspection of Arial 1,2 workbook says 5.25pt ~7px
                                                $rowHeight = 5.25;
                                                break;
 
                                        default:
                                                // use Arial 10 workbook as an approximation, extrapolation
                                                $rowHeight = 12.75 * $font->getSize() / 10;
                                                break;
                                }
                                break;
 
                        case 'Calibri':
                                switch ($font->getSize()) {
                                        case 11:
                                                // inspection of Calibri 11 workbook says 15.00pt ~20px
                                                $rowHeight = 15;
                                                break;
 
                                        case 10:
                                                // inspection of Calibri 10 workbook says 12.75pt ~17px
                                                $rowHeight = 12.75;
                                                break;
 
                                        case 9:
                                                // inspection of Calibri 9 workbook says 12.00pt ~16px
                                                $rowHeight = 12;
                                                break;
 
                                        case 8:
                                                // inspection of Calibri 8 workbook says 11.25pt ~15px
                                                $rowHeight = 11.25;
                                                break;
 
                                        case 7:
                                                // inspection of Calibri 7 workbook says 9.00pt ~12px
                                                $rowHeight = 9;
                                                break;
 
                                        case 6:
                                        case 5:
                                                // inspection of Calibri 5,6 workbook says 8.25pt ~11px
                                                $rowHeight = 8.25;
                                                break;
 
                                        case 4:
                                                // inspection of Calibri 4 workbook says 6.75pt ~9px
                                                $rowHeight = 6.75;
                                                break;
 
                                        case 3:
                                                // inspection of Calibri 3 workbook says 6.00pt ~8px
                                                $rowHeight = 6.00;
                                                break;
 
                                        case 2:
                                        case 1:
                                                // inspection of Calibri 1,2 workbook says 5.25pt ~7px
                                                $rowHeight = 5.25;
                                                break;
 
                                        default:
                                                // use Calibri 11 workbook as an approximation, extrapolation
                                                $rowHeight = 15 * $font->getSize() / 11;
                                                break;
                                }
                                break;
 
                        case 'Verdana':
                                switch ($font->getSize()) {
                                        case 10:
                                                // inspection of Verdana 10 workbook says 12.75pt ~17px
                                                $rowHeight = 12.75;
                                                break;
 
                                        case 9:
                                                // inspection of Verdana 9 workbook says 11.25pt ~15px
                                                $rowHeight = 11.25;
                                                break;
 
                                        case 8:
                                                // inspection of Verdana 8 workbook says 10.50pt ~14px
                                                $rowHeight = 10.50;
                                                break;
 
                                        case 7:
                                                // inspection of Verdana 7 workbook says 9.00pt ~12px
                                                $rowHeight = 9.00;
                                                break;
 
                                        case 6:
                                        case 5:
                                                // inspection of Verdana 5,6 workbook says 8.25pt ~11px
                                                $rowHeight = 8.25;
                                                break;
 
                                        case 4:
                                                // inspection of Verdana 4 workbook says 6.75pt ~9px
                                                $rowHeight = 6.75;
                                                break;
 
                                        case 3:
                                                // inspection of Verdana 3 workbook says 6.00pt ~8px
                                                $rowHeight = 6;
                                                break;
 
                                        case 2:
                                        case 1:
                                                // inspection of Verdana 1,2 workbook says 5.25pt ~7px
                                                $rowHeight = 5.25;
                                                break;
 
                                        default:
                                                // use Verdana 10 workbook as an approximation, extrapolation
                                                $rowHeight = 12.75 * $font->getSize() / 10;
                                                break;
                                }
                                break;
 
                        default:
                                // just use Calibri as an approximation
                                $rowHeight = 15 * $font->getSize() / 11;
                                break;
                }
 
                return $rowHeight;
        }
 
}