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RTL Language Support #2107

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RTL Language Support #2107

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1f8f057
#712 Added support for languages read from right to left
simonberger Mar 7, 2020
2dc98a1
Fixed set align:right through direction:rtl just if no align has been…
simonberger Mar 8, 2020
30abbdb
fixed last commit
simonberger Mar 8, 2020
62e7b36
#2107 #712 Activated shaping (joining of glyphs) for languages like a…
simonberger Mar 14, 2020
bf053a4
Merge branch 'develop' into feature/rtl_language_support
bsweeney May 2, 2020
7680338
Move bidi transform past the line splitting
simonberger May 8, 2020
d8685b3
Merge branch 'develop' into feature/rtl_language_support
simonberger May 17, 2020
7cbb6e2
Fixed bidi transform removing whitespace in WS separated inline elements
simonberger May 19, 2020
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3 changes: 2 additions & 1 deletion composer.json
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,8 @@
"ext-dom": "*",
"ext-mbstring": "*",
"phenx/php-font-lib": "^0.5.1",
"phenx/php-svg-lib": "^0.3.3"
"phenx/php-svg-lib": "^0.3.3",
"tecnickcom/tc-lib-unicode": "~1.3.11"
},
"require-dev": {
"phpunit/phpunit": "^7.5",
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7 changes: 7 additions & 0 deletions src/Css/AttributeTranslator.php
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Expand Up @@ -61,6 +61,7 @@ class AttributeTranslator
],
'rules' => '!set_table_rules',
'width' => 'width: %s;',
'dir' => 'direction: %s;'
],
'hr' => [
'align' => '!set_hr_align', // Need to grab width to set 'left' & 'right' correctly
Expand All @@ -70,6 +71,7 @@ class AttributeTranslator
],
'div' => [
'align' => 'text-align: %s;',
'dir' => 'direction: %s;'
],
'h1' => [
'align' => 'text-align: %s;',
Expand All @@ -95,6 +97,7 @@ class AttributeTranslator
],
'p' => [
'align' => 'text-align: %s;',
'dir' => 'direction: %s;'
],
// 'col' => array(
// 'align' => '',
Expand All @@ -115,6 +118,7 @@ class AttributeTranslator
'nowrap' => 'white-space: nowrap;',
'valign' => 'vertical-align: %s;',
'width' => 'width: %s;',
'dir' => 'direction: %s;'
],
'tfoot' => [
'align' => '!set_table_row_align',
Expand All @@ -127,6 +131,7 @@ class AttributeTranslator
'nowrap' => 'white-space: nowrap;',
'valign' => 'vertical-align: %s;',
'width' => 'width: %s;',
'dir' => 'direction: %s;'
],
'thead' => [
'align' => '!set_table_row_align',
Expand All @@ -142,6 +147,7 @@ class AttributeTranslator
'bgcolor' => '!set_background_color',
'link' => '!set_body_link',
'text' => '!set_color',
'dir' => 'direction: %s;'
],
'br' => [
'clear' => 'clear: %s;',
Expand Down Expand Up @@ -177,6 +183,7 @@ class AttributeTranslator
'li' => [
'type' => 'list-style-type: %s;',
'value' => 'counter-reset: -dompdf-default-counter %d;',
'dir' => 'direction: %s;'
],
'pre' => [
'width' => 'width: %s;',
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9 changes: 9 additions & 0 deletions src/Css/Style.php
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Expand Up @@ -1992,6 +1992,15 @@ protected function set_prop_color($prop, $color)
$this->_props_computed[$prop] = (is_array($munged_color) ? $munged_color["hex"] : $munged_color);
}

public function set_direction($direction)
{
$this->_props["direction"] = $direction;
$this->_prop_cache["direction"] = null;
if ($direction === 'rtl') {
$this->text_align = 'right';
}
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}

/**
* Sets color
*
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38 changes: 35 additions & 3 deletions src/FrameReflower/Text.php
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Expand Up @@ -8,6 +8,7 @@
*/
namespace Dompdf\FrameReflower;

use Com\Tecnick\Unicode\Bidi;
use Dompdf\FrameDecorator\Block as BlockFrameDecorator;
use Dompdf\FrameDecorator\Text as TextFrameDecorator;
use Dompdf\FontMetrics;
Expand Down Expand Up @@ -219,7 +220,15 @@ protected function _layout_line()
switch ($style->white_space) {
default:
case "normal":
$frame->set_text($text = $this->_collapse_white_space($text));
$text = $this->_collapse_white_space($text);

if ($style->direction === 'rtl') {
$bidi = new Bidi($text, null, null, 'R', false);
$text = $bidi->getString();
}

$frame->set_text($text);

if ($text == "") {
break;
}
Expand All @@ -228,15 +237,32 @@ protected function _layout_line()
break;

case "pre":
if ($style->direction === 'rtl') {
$bidi = new Bidi($text, null, null, 'R', false);
$text = $bidi->getString();
}

$split = $this->_newline_break($text);
$add_line = $split !== false;
break;

case "nowrap":
$frame->set_text($text = $this->_collapse_white_space($text));
$text = $this->_collapse_white_space($text);

if ($style->direction === 'rtl') {
$bidi = new Bidi($text, null, null, 'R', false);
$text = $bidi->getString();
}

$frame->set_text($text);
break;

case "pre-wrap":
if ($style->direction === 'rtl') {
$bidi = new Bidi($text, null, null, 'R', false);
$text = $bidi->getString();
}

$split = $this->_newline_break($text);

if (($tmp = $this->_line_break($text)) !== false) {
Expand All @@ -249,7 +275,13 @@ protected function _layout_line()

case "pre-line":
// Collapse white-space except for \n
$frame->set_text($text = preg_replace("/[ \t]+/u", " ", $text));
$text = preg_replace("/[ \t]+/u", " ", $text);

if ($style->direction === 'rtl') {
$bidi = new Bidi($text, null, null, 'R', false);
$text = $bidi->getString();
}
$frame->set_text($text);

if ($text == "") {
break;
Expand Down