Fix number formatting in chart classes

Use explizit number formatting instead of implicit type conversions when
rendering SVGs, to prevent a change of the locale from breaking the charts.

fixes #6585

library/Icinga/Chart/Format.php

@@ -0,0 +1,46 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+/**
+ * This file is part of Icinga 2 Web.
+ *
+ * Icinga 2 Web - Head for multiple monitoring backends.
+ * Copyright (C) 2013 Icinga Development Team
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * @copyright 2013 Icinga Development Team <info@icinga.org>
+ * @license   http://www.gnu.org/licenses/gpl-2.0.txt GPL, version 2
+ * @author    Icinga Development Team <info@icinga.org>
+ */
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Chart;
+
+class Format
+{
+    /**
+     * Format a number into a number-string as defined by the SVG-Standard
+     *
+     * @see http://www.w3.org/TR/SVG/types.html#DataTypeNumber
+     *
+     * @param $number
+     *
+     * @return string
+     */
+    public static function formatSVGNumber($number)
+    {
+        return number_format($number, 1, '.', '');
+    }
+}

library/Icinga/Chart/Primitive/Circle.php

@@ -83,8 +83,8 @@ class Circle extends Styleable implements Drawable
     {
         $coords = $ctx->toAbsolute($this->x, $this->y);
         $circle = $ctx->getDocument()->createElement('circle');
-        $circle->setAttribute('cx', $coords[0]);
-        $circle->setAttribute('cy', $coords[1]);
+        $circle->setAttribute('cx', Format::formatSVGNumber($coords[0]));
+        $circle->setAttribute('cy', Format::formatSVGNumber($coords[1]));
         $circle->setAttribute('r', 5);
         $circle->setAttribute('style', $this->getStyle());
         $this->applyAttributes($circle);

library/Icinga/Chart/Primitive/Line.php

@@ -101,10 +101,10 @@ class Line extends Styleable implements Drawable
         list($x1, $y1) = $ctx->toAbsolute($this->xStart, $this->yStart);
         list($x2, $y2) = $ctx->toAbsolute($this->xEnd, $this->yEnd);
         $line = $doc->createElement('line');
-        $line->setAttribute('x1', $x1);
-        $line->setAttribute('x2', $x2);
-        $line->setAttribute('y1', $y1);
-        $line->setAttribute('y2', $y2);
+        $line->setAttribute('x1', Format::formatSVGNumber($x1));
+        $line->setAttribute('x2', Format::formatSVGNumber($x2));
+        $line->setAttribute('y1', Format::formatSVGNumber($y1));
+        $line->setAttribute('y2', Format::formatSVGNumber($y2));
         $line->setAttribute('style', $this->getStyle());
         $this->applyAttributes($line);
         return $line;

library/Icinga/Chart/Primitive/Path.php

@@ -30,8 +30,9 @@
 namespace Icinga\Chart\Primitive;
 
 
-use \DOMElement;
-use \Icinga\Chart\Render\RenderContext;
+use DOMElement;
+use Icinga\Chart\Render\RenderContext;
+use Icinga\Chart\Format;
 
 /**
  * Drawable for creating a svg path element
@@ -177,6 +178,8 @@ class Path extends Styleable implements Drawable
             if (!$this->isAbsolute) {
                 $point = $ctx->toAbsolute($point[0], $point[1]);
             }
+            $point[0] = Format::formatSVGNumber($point[0]);
+            $point[1] = Format::formatSVGNumber($point[1]);
             if ($lastPoint && $this->discrete) {
                 $pathDescription .= sprintf($tpl, $point[0], $lastPoint[1]);
             }

library/Icinga/Chart/Primitive/PieSlice.php

@@ -29,8 +29,9 @@
 
 namespace Icinga\Chart\Primitive;
 
-use \DOMElement;
-use \Icinga\Chart\Render\RenderContext;
+use DOMElement;
+use Icinga\Chart\Render\RenderContext;
+use Icinga\Chart\Format;
 
 /**
  * Component for drawing a pie slice
@@ -138,15 +139,15 @@ class PieSlice extends Animatable implements Drawable
         $yEnd = $y - ($r * cos($this->endRadian));
 
         // Draw a straight line to the upper part of the arc
-        $pathString .= 'L ' . $xStart . ' ' . $yStart;
+        $pathString .= 'L ' . Format::formatSVGNumber($xStart) . ' ' . Format::formatSVGNumber($yStart);
         // Instead of directly connecting the upper part of the arc (leaving a triangle), draw a bow with the radius
-        $pathString .= ' A ' . $r . ' ' . $r ;
+        $pathString .= ' A ' . Format::formatSVGNumber($r) . ' ' . Format::formatSVGNumber($r);
         // These are the flags for the bow, see the SVG path documentation for details
         // http://www.w3.org/TR/SVG/paths.html#PathDataEllipticalArcCommands
         $pathString .= ' 0 ' . (($this->endRadian - $this->startRadian > M_PI) ?  '1'  : '0 ') . ' 1';
 
         // xEnd and yEnd are the lower point of the arc
-        $pathString .= ' '.$xEnd . ' ' . $yEnd;
+        $pathString .= ' ' . Format::formatSVGNumber($xEnd) . ' ' . Format::formatSVGNumber($yEnd);
         return $pathString;
     }
 

library/Icinga/Chart/Primitive/Rect.php

@@ -31,6 +31,7 @@ namespace Icinga\Chart\Primitive;
 
 use \DomElement;
 use \Icinga\Chart\Render\RenderContext;
+use Icinga\Chart\Format;
 
 /**
  * Drawable representing the SVG rect element
@@ -116,10 +117,10 @@ class Rect extends Animatable implements Drawable
         if ($this->keepRatio) {
             $ctx->ignoreRatio();
         }
-        $rect->setAttribute('x', $x);
-        $rect->setAttribute('y', $y);
-        $rect->setAttribute('width', $width);
-        $rect->setAttribute('height', $height);
+        $rect->setAttribute('x', Format::formatSVGNumber($x));
+        $rect->setAttribute('y', Format::formatSVGNumber($y));
+        $rect->setAttribute('width', Format::formatSVGNumber($width));
+        $rect->setAttribute('height', Format::formatSVGNumber($height));
         $rect->setAttribute('style', $this->getStyle());
 
         $this->applyAttributes($rect);

library/Icinga/Chart/Primitive/Text.php

@@ -30,9 +30,10 @@
 
 namespace Icinga\Chart\Primitive;
 
-use \DOMElement;
-use \DOMText;
-use \Icinga\Chart\Render\RenderContext;
+use DOMElement;
+use DOMText;
+use Icinga\Chart\Render\RenderContext;
+use Icinga\Chart\Format;
 
 /**
  *  Wrapper for the SVG text element
@@ -184,7 +185,7 @@ class Text extends Styleable implements Drawable
     {
         list($x, $y) = $ctx->toAbsolute($this->x, $this->y);
         $text = $ctx->getDocument()->createElement('text');
-        $text->setAttribute('x', $x - 15);
+        $text->setAttribute('x', Format::formatSVGNumber($x - 15));
         $text->setAttribute(
             'style',
             $this->getStyle()
@@ -196,7 +197,7 @@ class Text extends Styleable implements Drawable
             .  'text-anchor: ' . $this->alignment
         );
 
-        $text->setAttribute('y', $y);
+        $text->setAttribute('y', Format::formatSVGNumber($y));
         $text->appendChild(new DOMText($this->text));
         return $text;
     }

library/Icinga/Chart/Render/LayoutBox.php

@@ -29,6 +29,8 @@
 
 namespace Icinga\Chart\Render;
 
+use Icinga\Chart\Format;
+
 /**
  * Layout class encapsulating size, padding and margin information
  */
@@ -147,7 +149,13 @@ class LayoutBox
 
         $scaleX *= $this->getWidth()/100;
         $scaleY *= $this->getHeight()/100;
-        return sprintf('translate(%s, %s) scale(%s, %s)', $translateX, $translateY, $scaleX, $scaleY);
+        return sprintf(
+            'translate(%s, %s) scale(%s, %s)',
+            Format::formatSVGNumber($translateX),
+            Format::formatSVGNumber($translateY),
+            Format::formatSVGNumber($scaleX),
+            Format::formatSVGNumber($scaleY)
+        );
     }
 
     /**

library/Icinga/Chart/Render/RenderContext.php

@@ -30,8 +30,7 @@
 
 namespace Icinga\Chart\Render;
 
-use \DOMDocument;
-use \Icinga\Util\Dimension;
+use DOMDocument;
 
 /**
  * Context for rendering, handles ratio based coordinate calculations.

library/Icinga/Chart/SVGRenderer.php

@@ -107,9 +107,9 @@ class SVGRenderer
         $ctx = $this->createRenderContext();
         $svg = $this->document->createElement('svg');
         $svg->setAttribute('xmlns', 'http://www.w3.org/2000/svg');
-        $svg->setATtribute('xmlns:xlink', 'http://www.w3.org/1999/xlink');
+        $svg->setAttribute('xmlns:xlink', 'http://www.w3.org/1999/xlink');
         $svg->setAttribute('width', $this->width . '%');
-        $svg->setAttribute('height', $this->width . '%');
+        $svg->setAttribute('height', $this->height . '%');
         $svg->setAttribute(
             'viewBox',
             sprintf(

library/Icinga/Chart/Unit/AxisUnit.php

@@ -29,7 +29,7 @@
 
 namespace Icinga\Chart\Unit;
 
-use \Iterator;
+use Iterator;
 
 /**
  * Base class for Axis Units