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PhenXPhenX
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Add support for composite glyph parsing and encoding
Better glyph drawing Update font viewer links
1 parent 8fadad9 commit 7c15d5c

13 files changed

+960
-802
lines changed

‎classes/font.cls.php

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@@ -47,6 +47,7 @@ public static function load($file) {
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}
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if ($class) {
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/** @noinspection PhpIncludeInspection */
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require_once dirname(__FILE__)."/".strtolower($class).".cls.php";
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/** @var Font_TrueType $obj */

‎classes/font_glyph_outline.cls.php

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@@ -16,17 +16,6 @@
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* @package php-font-lib
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*/
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class Font_Glyph_Outline extends Font_Binary_Stream {
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const ARG_1_AND_2_ARE_WORDS = 0x0001;
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const ARGS_ARE_XY_VALUES = 0x0002;
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const ROUND_XY_TO_GRID = 0x0004;
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const WE_HAVE_A_SCALE = 0x0008;
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const MORE_COMPONENTS = 0x0020;
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const WE_HAVE_AN_X_AND_Y_SCALE = 0x0040;
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const WE_HAVE_A_TWO_BY_TWO = 0x0080;
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const WE_HAVE_INSTRUCTIONS = 0x0100;
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const USE_MY_METRICS = 0x0200;
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const OVERLAP_COMPOUND = 0x0400;
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/**
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* @var Font_Table_glyf
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*/
@@ -95,7 +84,7 @@ function parse() {
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function parseData(){
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$font = $this->getFont();
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$font->seek($this->offset);
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$this->numberOfContours = $font->readInt16();
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$this->xMin = $font->readFWord();
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$this->yMin = $font->readFWord();

‎classes/font_glyph_outline_component.cls.php

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@@ -0,0 +1,22 @@
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<?php
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/**
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* @package php-font-lib
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* @link https://github.com/PhenX/php-font-lib
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* @author Fabien Ménager <[email protected]>
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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* @version $Id: font_table_glyf.cls.php 46 2012-04-02 20:22:38Z fabien.menager $
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*/
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/**
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* Glyph outline component
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*
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* @package php-font-lib
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*/
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class Font_Glyph_Outline_Component {
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public $flags;
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public $glyphIndex;
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public $a, $b, $c, $d, $e, $f;
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public $point_compound;
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public $point_component;
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public $instructions;
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}

‎classes/font_glyph_outline_composite.cls.php

Lines changed: 225 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -1,27 +1,226 @@
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<?php
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/**
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* @package php-font-lib
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* @link https://github.com/PhenX/php-font-lib
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* @author Fabien Ménager <[email protected]>
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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* @version $Id: font_table_glyf.cls.php 46 2012-04-02 20:22:38Z fabien.menager $
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*/
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/**
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* `glyf` font table.
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*
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* @package php-font-lib
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*/
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class Font_Glyph_Outline_Composite extends Font_Glyph_Outline {
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public $flags;
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public $glyphIndex;
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function parseData(){
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parent::parseData();
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$font = $this->getFont();
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$this->flags = $font->readUInt16();
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$this->glyphIndex = $font->readUInt16();
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}
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<?php
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/**
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* @package php-font-lib
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* @link https://github.com/PhenX/php-font-lib
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* @author Fabien Ménager <[email protected]>
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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* @version $Id: font_table_glyf.cls.php 46 2012-04-02 20:22:38Z fabien.menager $
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*/
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require_once dirname(__FILE__)."/font_glyph_outline_component.cls.php";
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/**
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* Composite glyph outline
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*
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* @package php-font-lib
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*/
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class Font_Glyph_Outline_Composite extends Font_Glyph_Outline {
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const ARG_1_AND_2_ARE_WORDS = 0x0001;
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const ARGS_ARE_XY_VALUES = 0x0002;
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const ROUND_XY_TO_GRID = 0x0004;
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const WE_HAVE_A_SCALE = 0x0008;
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const MORE_COMPONENTS = 0x0020;
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const WE_HAVE_AN_X_AND_Y_SCALE = 0x0040;
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const WE_HAVE_A_TWO_BY_TWO = 0x0080;
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const WE_HAVE_INSTRUCTIONS = 0x0100;
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const USE_MY_METRICS = 0x0200;
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const OVERLAP_COMPOUND = 0x0400;
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/**
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* @var Font_Glyph_Outline_Component[]
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*/
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public $components = array();
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function getGlyphIDs(){
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if (empty($this->components)) {
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$this->parseData();
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}
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$glyphIDs = array();
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foreach ($this->components as $_component) {
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$glyphIDs[] = $_component->glyphIndex;
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}
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return $glyphIDs;
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}
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/*function parse() {
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//$this->parseData();
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}*/
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function parseData(){
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parent::parseData();
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$font = $this->getFont();
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do {
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$flags = $font->readUInt16();
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$glyphIndex = $font->readUInt16();
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$a = 1.0; $b = 0.0;
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$c = 0.0; $d = 1.0;
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$e = 0.0; $f = 0.0;
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$point_compound = null;
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$point_component = null;
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$instructions = null;
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if ($flags & self::ARG_1_AND_2_ARE_WORDS) {
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if ($flags & self::ARGS_ARE_XY_VALUES) {
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$e = $font->readInt16();
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$f = $font->readInt16();
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}
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else {
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$point_compound = $font->readUInt16();
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$point_component = $font->readUInt16();
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}
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}
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else {
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if ($flags & self::ARGS_ARE_XY_VALUES) {
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$e = $font->readInt8();
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$f = $font->readInt8();
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}
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else {
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$point_compound = $font->readUInt8();
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$point_component = $font->readUInt8();
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}
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}
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if ($flags & self::WE_HAVE_A_SCALE) {
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$a = $d = $font->readInt16();
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}
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elseif ($flags & self::WE_HAVE_AN_X_AND_Y_SCALE) {
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$a = $font->readInt16();
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$d = $font->readInt16();
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}
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elseif ($flags & self::WE_HAVE_A_TWO_BY_TWO) {
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$a = $font->readInt16();
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$b = $font->readInt16();
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$c = $font->readInt16();
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$d = $font->readInt16();
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}
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//if ($flags & self::WE_HAVE_INSTRUCTIONS) {
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//
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//}
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108+
$component = new Font_Glyph_Outline_Component();
109+
$component->flags = $flags;
110+
$component->glyphIndex = $glyphIndex;
111+
$component->a = $a;
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$component->b = $b;
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$component->c = $c;
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$component->d = $d;
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$component->e = $e;
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$component->f = $f;
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$component->point_compound = $point_compound;
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$component->point_component = $point_component;
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$component->instructions = $instructions;
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$this->components[] = $component;
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123+
} while ($flags & self::MORE_COMPONENTS);
124+
}
125+
126+
function encode(){
127+
$font = $this->getFont();
128+
129+
$gids = array_values($font->getSubset());
130+
131+
$size = $font->writeInt16(-1);
132+
$size += $font->writeFWord($this->xMin);
133+
$size += $font->writeFWord($this->yMin);
134+
$size += $font->writeFWord($this->xMax);
135+
$size += $font->writeFWord($this->yMax);
136+
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foreach ($this->components as $_i => $_component) {
138+
$flags = 0;
139+
if ($_component->point_component === null && $_component->point_compound === null) {
140+
$flags |= self::ARGS_ARE_XY_VALUES;
141+
142+
if (abs($_component->e) > 0x7F || abs($_component->f) > 0x7F) {
143+
$flags |= self::ARG_1_AND_2_ARE_WORDS;
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}
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}
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elseif ($_component->point_component > 0xFF || $_component->point_compound > 0xFF) {
147+
$flags |= self::ARG_1_AND_2_ARE_WORDS;
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}
149+
150+
if ($_component->b == 0 && $_component->c == 0) {
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if ($_component->a == $_component->d) {
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if ($_component->a != 1.0) {
153+
$flags |= self::WE_HAVE_A_SCALE;
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}
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}
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else {
157+
$flags |= self::WE_HAVE_AN_X_AND_Y_SCALE;
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}
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}
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else {
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$flags |= self::WE_HAVE_A_TWO_BY_TWO;
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}
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164+
if ($_i < count($this->components)-1) {
165+
$flags |= self::MORE_COMPONENTS;
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}
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168+
$size += $font->writeUInt16($flags);
169+
170+
$new_gid = array_search($_component->glyphIndex, $gids);
171+
$size += $font->writeUInt16($new_gid);
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if ($flags & self::ARG_1_AND_2_ARE_WORDS) {
174+
if ($flags & self::ARGS_ARE_XY_VALUES) {
175+
$size += $font->writeInt16($_component->e);
176+
$size += $font->writeInt16($_component->f);
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}
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else {
179+
$size += $font->writeUInt16($_component->point_compound);
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$size += $font->writeUInt16($_component->point_component);
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}
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}
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else {
184+
if ($flags & self::ARGS_ARE_XY_VALUES) {
185+
$size += $font->writeInt8($_component->e);
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$size += $font->writeInt8($_component->f);
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}
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else {
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$size += $font->writeUInt8($_component->point_compound);
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$size += $font->writeUInt8($_component->point_component);
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}
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}
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if ($flags & self::WE_HAVE_A_SCALE) {
195+
$size += $font->writeInt16($_component->a);
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}
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elseif ($flags & self::WE_HAVE_AN_X_AND_Y_SCALE) {
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$size += $font->writeInt16($_component->a);
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$size += $font->writeInt16($_component->d);
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}
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elseif ($flags & self::WE_HAVE_A_TWO_BY_TWO) {
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$size += $font->writeInt16($_component->a);
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$size += $font->writeInt16($_component->b);
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$size += $font->writeInt16($_component->c);
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$size += $font->writeInt16($_component->d);
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}
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}
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return $size;
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}
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public function getSVGContours(){
213+
$path = "";
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215+
/** @var Font_Table_glyf $glyph_data */
216+
$glyph_data = $this->getFont()->getTableObject("glyf");
217+
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$glyphs = $glyph_data->data;
219+
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foreach ($this->components as $component) {
221+
$path .= $glyphs[$component->glyphIndex]->getSVGContours();
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}
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return $path;
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}
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}

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