- Implemented feature #10978: Add support for stacked bar charts

4 files changed, 216 insertions, 0 deletions

diff --git a/tests/data/compare/ezcGraphLineChartTest_testStackedBarChart.svg b/tests/data/compare/ezcGraphLineChartTest_testStackedBarChart.svg
new file mode 100644
index 0000000..507c2dd
--- /dev/null
+++ b/tests/data/compare/ezcGraphLineChartTest_testStackedBarChart.svg
@@ -0,0 +1,2 @@
+<?xml version="1.0"?>
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fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_113"/><text id="ezcGraphTextBox_4_text" x="17.0000" text-length="44.5200px" y="13.9000" style="font-size: 14px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">sample</text></g><g id="ezcGraphTextBox_6"><path d=" M 16.5000,35.0000 L 16.5000,19.5000 L 77.3600,19.5000 L 77.3600,35.0000 L 16.5000,35.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_114"/><text id="ezcGraphTextBox_6_text" x="17.0000" text-length="59.3600px" y="31.9000" style="font-size: 14px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">sample 2</text></g><g id="ezcGraphTextBox_8"><path d=" M 16.5000,53.0000 L 16.5000,37.5000 L 77.3600,37.5000 L 77.3600,53.0000 L 16.5000,53.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_115"/><text id="ezcGraphTextBox_8_text" x="17.0000" text-length="59.3600px" y="49.9000" style="font-size: 14px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">sample 3</text></g><g id="ezcGraphTextBox_13"><path d=" M 151.0950,162.0000 L 151.0950,149.5000 L 193.4050,149.5000 L 193.4050,162.0000 L 151.0950,162.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_116"/><text id="ezcGraphTextBox_13_text" x="151.5950" text-length="40.8100px" y="159.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">Mozilla</text></g><g id="ezcGraphTextBox_16"><path d=" M 229.6700,162.0000 L 229.6700,149.5000 L 242.8300,149.5000 L 242.8300,162.0000 L 229.6700,162.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_117"/><text id="ezcGraphTextBox_16_text" x="230.1700" text-length="11.6600px" y="159.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">IE</text></g><g id="ezcGraphTextBox_19"><path d=" M 284.9250,162.0000 L 284.9250,149.5000 L 315.5750,149.5000 L 315.5750,162.0000 L 284.9250,162.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_118"/><text id="ezcGraphTextBox_19_text" x="285.4250" text-length="29.1500px" y="159.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">Opera</text></g><g id="ezcGraphTextBox_22"><path d=" M 351.8400,162.0000 L 351.8400,149.5000 L 376.6600,149.5000 L 376.6600,162.0000 L 351.8400,162.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_119"/><text id="ezcGraphTextBox_22_text" x="352.3400" text-length="23.3200px" y="159.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">wget</text></g><g id="ezcGraphTextBox_25"><path d=" M 410.0100,162.0000 L 410.0100,149.5000 L 446.4900,149.5000 L 446.4900,162.0000 L 410.0100,162.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_120"/><text id="ezcGraphTextBox_25_text" x="410.5100" text-length="34.9800px" y="159.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">Safari</text></g><g id="ezcGraphTextBox_30"><path d=" M 103.4000,179.0000 L 103.4000,166.5000 L 139.0000,166.5000 L 139.0000,179.0000 L 103.4000,179.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_121"/><text id="ezcGraphTextBox_30_text" x="103.9000" text-length="34.1000px" y="176.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">-2500</text></g><g id="ezcGraphTextBox_39"><path d=" M 130.6800,147.0000 L 130.6800,134.5000 L 139.0000,134.5000 L 139.0000,147.0000 L 130.6800,147.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_122"/><text id="ezcGraphTextBox_39_text" x="131.1800" text-length="6.8200px" y="144.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">0</text></g><g id="ezcGraphTextBox_50"><path d=" M 110.2200,115.0000 L 110.2200,102.5000 L 139.0000,102.5000 L 139.0000,115.0000 L 110.2200,115.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_123"/><text id="ezcGraphTextBox_50_text" x="110.7200" text-length="27.2800px" y="112.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">2500</text></g><g id="ezcGraphTextBox_61"><path d=" M 110.2200,83.0000 L 110.2200,70.5000 L 139.0000,70.5000 L 139.0000,83.0000 L 110.2200,83.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_124"/><text id="ezcGraphTextBox_61_text" x="110.7200" text-length="27.2800px" y="80.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">5000</text></g><g id="ezcGraphTextBox_72"><path d=" M 110.2200,51.0000 L 110.2200,38.5000 L 139.0000,38.5000 L 139.0000,51.0000 L 110.2200,51.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_125"/><text id="ezcGraphTextBox_72_text" x="110.7200" text-length="27.2800px" y="48.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">7500</text></g><g id="ezcGraphTextBox_83"><path d=" M 103.4000,34.0000 L 103.4000,21.5000 L 139.0000,21.5000 L 139.0000,34.0000 L 103.4000,34.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_126"/><text id="ezcGraphTextBox_83_text" x="103.9000" text-length="34.1000px" y="31.3500" style="font-size: 11px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">10000</text></g></g></svg>
diff --git a/tests/data/compare/ezcGraphLineChartTest_testStackedBarChart3d.svg b/tests/data/compare/ezcGraphLineChartTest_testStackedBarChart3d.svg
new file mode 100644
index 0000000..920cd9c
--- /dev/null
+++ b/tests/data/compare/ezcGraphLineChartTest_testStackedBarChart3d.svg
@@ -0,0 +1,2 @@
+<?xml version="1.0"?>
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stroke: none;" id="ezcGraphPolygon_153"/><path d=" M 402.1972,118.2195 L 386.1972,134.2195 L 441.0027,134.2195 L 457.0027,118.2195 L 402.1972,118.2195 z " style="fill: #2f5c04; fill-opacity: 1.00; stroke: none;" id="ezcGraphPolygon_154"/><path d=" M 441.0027,139.8298 L 386.1972,139.8298 L 386.1972,134.2195 L 441.0027,134.2195 L 441.0027,139.8298 z " style="fill: #4e9a06; fill-opacity: 1.00; stroke: none;" id="ezcGraphPolygon_155"/><path d=" M 402.1972,94.6842 L 386.1972,110.6842 L 441.0027,110.6842 L 457.0027,94.6842 L 402.1972,94.6842 z " style="fill: #7a0000; fill-opacity: 1.00; stroke: none;" id="ezcGraphPolygon_156"/><path d=" M 441.0027,134.2195 L 386.1972,134.2195 L 386.1972,110.6842 L 441.0027,110.6842 L 441.0027,134.2195 z " style="fill: #cc0000; fill-opacity: 1.00; stroke: none;" id="ezcGraphPolygon_157"/><path d=" M 457.0027,123.8298 L 441.0027,139.8298 L 441.0027,151.2000 L 457.0027,135.2000 L 457.0027,123.8298 z " style="fill: #2a5183; fill-opacity: 1.00; stroke: none;" id="ezcGraphPolygon_158"/><path d=" M 457.0027,118.2195 L 441.0027,134.2195 L 441.0027,139.8298 L 457.0027,123.8298 L 457.0027,118.2195 z " style="fill: #3e7b05; fill-opacity: 1.00; stroke: none;" id="ezcGraphPolygon_159"/><path d=" M 457.0027,94.6842 L 441.0027,110.6842 L 441.0027,134.2195 L 457.0027,118.2195 L 457.0027,94.6842 z " style="fill: #a30000; fill-opacity: 1.00; stroke: none;" id="ezcGraphPolygon_160"/><path d=" M 500.0000,133.2000 L 480.0000,153.2000" style="fill: none; stroke: #2e3436; stroke-width: 1; stroke-opacity: 1.00; stroke-linecap: round; stroke-linejoin: round;" id="ezcGraphLine_161"/><path d=" M 480.0000,153.2000 L 100.0000,153.2000" style="fill: none; stroke: #2e3436; stroke-width: 1; stroke-opacity: 1.00; stroke-linecap: round; stroke-linejoin: round;" id="ezcGraphLine_162"/><path d=" M 100.0000,153.2000 L 120.0000,133.2000" style="fill: none; stroke: #2e3436; stroke-width: 1; stroke-opacity: 1.00; stroke-linecap: round; stroke-linejoin: round;" id="ezcGraphLine_163"/><path d=" M 158.0000,0.0000 L 138.0000,20.0000" style="fill: none; stroke: #2e3436; stroke-width: 1; stroke-opacity: 1.00; stroke-linecap: round; stroke-linejoin: round;" id="ezcGraphLine_164"/><path d=" M 138.0000,20.0000 L 138.0000,200.0000" style="fill: none; stroke: #2e3436; stroke-width: 1; stroke-opacity: 1.00; stroke-linecap: round; stroke-linejoin: round;" id="ezcGraphLine_165"/><path d=" M 138.0000,200.0000 L 158.0000,180.0000" style="fill: none; stroke: #2e3436; stroke-width: 1; stroke-opacity: 1.00; stroke-linecap: round; stroke-linejoin: round;" id="ezcGraphLine_166"/><g id="ezcGraphTextBox_4"><path d=" M 16.5000,17.0000 L 16.5000,1.5000 L 62.5200,1.5000 L 62.5200,17.0000 L 16.5000,17.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_167"/><text id="ezcGraphTextBox_4_text" x="17.0000" text-length="44.5200px" y="13.9000" style="font-size: 14px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">sample</text></g><g id="ezcGraphTextBox_6"><path d=" M 16.5000,35.0000 L 16.5000,19.5000 L 77.3600,19.5000 L 77.3600,35.0000 L 16.5000,35.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_168"/><text id="ezcGraphTextBox_6_text" x="17.0000" text-length="59.3600px" y="31.9000" style="font-size: 14px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">sample 2</text></g><g id="ezcGraphTextBox_8"><path d=" M 16.5000,53.0000 L 16.5000,37.5000 L 77.3600,37.5000 L 77.3600,53.0000 L 16.5000,53.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_169"/><text id="ezcGraphTextBox_8_text" x="17.0000" text-length="59.3600px" y="49.9000" style="font-size: 14px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">sample 3</text></g><g id="ezcGraphTextBox_15"><path d=" M 147.8660,166.8000 L 147.8660,154.5000 L 189.4340,154.5000 L 189.4340,166.8000 L 147.8660,166.8000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_170"/><text id="ezcGraphTextBox_15_text" x="148.3660" text-length="40.0680px" y="164.1800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">Mozilla</text></g><g id="ezcGraphTextBox_19"><path d=" M 222.9760,166.8000 L 222.9760,154.5000 L 235.9240,154.5000 L 235.9240,166.8000 L 222.9760,166.8000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_171"/><text id="ezcGraphTextBox_19_text" x="223.4760" text-length="11.4480px" y="164.1800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">IE</text></g><g id="ezcGraphTextBox_23"><path d=" M 275.1900,166.8000 L 275.1900,154.5000 L 305.3100,154.5000 L 305.3100,166.8000 L 275.1900,166.8000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_172"/><text id="ezcGraphTextBox_23_text" x="275.6900" text-length="28.6200px" y="164.1800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">Opera</text></g><g id="ezcGraphTextBox_27"><path d=" M 338.8520,166.8000 L 338.8520,154.5000 L 363.2480,154.5000 L 363.2480,166.8000 L 338.8520,166.8000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_173"/><text id="ezcGraphTextBox_27_text" x="339.3520" text-length="22.8960px" y="164.1800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">wget</text></g><g id="ezcGraphTextBox_31"><path d=" M 393.9280,166.8000 L 393.9280,154.5000 L 429.7720,154.5000 L 429.7720,166.8000 L 393.9280,166.8000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_174"/><text id="ezcGraphTextBox_31_text" x="394.4280" text-length="34.3440px" y="164.1800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">Safari</text></g><g id="ezcGraphTextBox_38"><path d=" M 102.1200,181.2000 L 102.1200,168.9000 L 137.1000,168.9000 L 137.1000,181.2000 L 102.1200,181.2000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_175"/><text id="ezcGraphTextBox_38_text" x="102.6200" text-length="33.4800px" y="178.5800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">-2500</text></g><g id="ezcGraphTextBox_51"><path d=" M 128.9040,152.4000 L 128.9040,140.1000 L 137.1000,140.1000 L 137.1000,152.4000 L 128.9040,152.4000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_176"/><text id="ezcGraphTextBox_51_text" x="129.4040" text-length="6.6960px" y="149.7800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">0</text></g><g id="ezcGraphTextBox_67"><path d=" M 108.8160,123.6000 L 108.8160,111.3000 L 137.1000,111.3000 L 137.1000,123.6000 L 108.8160,123.6000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_177"/><text id="ezcGraphTextBox_67_text" x="109.3160" text-length="26.7840px" y="120.9800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">2500</text></g><g id="ezcGraphTextBox_83"><path d=" M 108.8160,94.8000 L 108.8160,82.5000 L 137.1000,82.5000 L 137.1000,94.8000 L 108.8160,94.8000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_178"/><text id="ezcGraphTextBox_83_text" x="109.3160" text-length="26.7840px" y="92.1800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">5000</text></g><g id="ezcGraphTextBox_99"><path d=" M 108.8160,66.0000 L 108.8160,53.7000 L 137.1000,53.7000 L 137.1000,66.0000 L 108.8160,66.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_179"/><text id="ezcGraphTextBox_99_text" x="109.3160" text-length="26.7840px" y="63.3800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">7500</text></g><g id="ezcGraphTextBox_115"><path d=" M 102.1200,51.6000 L 102.1200,39.3000 L 137.1000,39.3000 L 137.1000,51.6000 L 102.1200,51.6000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_180"/><text id="ezcGraphTextBox_115_text" x="102.6200" text-length="33.4800px" y="48.9800" style="font-size: 10px; font-family: sans-serif; fill: #2e3436; fill-opacity: 1.00; stroke: none;">10000</text></g></g></svg>
diff --git a/tests/line_test.php b/tests/line_test.php
index 002af62..10243b5 100644
--- a/tests/line_test.php
+++ b/tests/line_test.php
@@ -548,6 +548,97 @@ class ezcGraphLineChartTest extends ezcGraphTestCase
         $chart->render( 500, 200 );
     }
 
+    public function testRenderChartStackedBars()
+    {
+        $chart = new ezcGraphBarChart();
+
+        $chart->options->stackBars = true;
+
+        $chart->data['sampleData'] = new ezcGraphArrayDataSet( array( 'sample 1' => 234, 'sample 2' => 21, 'sample 3' => -324, 'sample 4' => 120, 'sample 5' => -16 ) );
+        $chart->data['sampleData']->color = '#CC0000';
+        $chart->data['moreData'] = new ezcGraphArrayDataSet( array( 'sample 1' => 234, 'sample 2' => -21, 'sample 3' => 324, 'sample 4' => 220, 'sample 5' => -34 ) );
+        $chart->data['moreData']->color = '#0000CC';
+
+        $mockedRenderer = $this->getMock( 'ezcGraphRenderer2d', array(
+            'drawStackedBar',
+        ) );
+
+        $mockedRenderer
+            ->expects( $this->at( 0 ) )
+            ->method( 'drawStackedBar' )
+            ->with(
+                $this->equalTo( new ezcGraphBoundings( 140., 20., 460., 180. ), 1. ),
+                $this->equalTo( new ezcGraphContext( 'sampleData', 'sample 1' ) ),
+                $this->equalTo( ezcGraphColor::fromHex( '#CC0000' ) ),
+                $this->equalTo( new ezcGraphCoordinate( .1, .5 ), .05 ),
+                $this->equalTo( new ezcGraphCoordinate( .1, .266 ), .05 )
+            );
+        $mockedRenderer
+            ->expects( $this->at( 4 ) )
+            ->method( 'drawStackedBar' )
+            ->with(
+                $this->equalTo( new ezcGraphBoundings( 140., 20., 460., 180. ), 1. ),
+                $this->equalTo( new ezcGraphContext( 'sampleData', 'sample 5' ) ),
+                $this->equalTo( ezcGraphColor::fromHex( '#CC0000' ) ),
+                $this->equalTo( new ezcGraphCoordinate( .9, .5 ), .05 ),
+                $this->equalTo( new ezcGraphCoordinate( .9, .516 ), .05 )
+            );
+        $mockedRenderer
+            ->expects( $this->at( 5 ) )
+            ->method( 'drawStackedBar' )
+            ->with(
+                $this->equalTo( new ezcGraphBoundings( 140., 20., 460., 180. ), 1. ),
+                $this->equalTo( new ezcGraphContext( 'moreData', 'sample 1' ) ),
+                $this->equalTo( ezcGraphColor::fromHex( '#0000CC' ) ),
+                $this->equalTo( new ezcGraphCoordinate( .1, .266 ), .05 ),
+                $this->equalTo( new ezcGraphCoordinate( .1, .032 ), .05 )
+            );
+        $mockedRenderer
+            ->expects( $this->at( 6 ) )
+            ->method( 'drawStackedBar' )
+            ->with(
+                $this->equalTo( new ezcGraphBoundings( 140., 20., 460., 180. ), 1. ),
+                $this->equalTo( new ezcGraphContext( 'moreData', 'sample 2' ) ),
+                $this->equalTo( ezcGraphColor::fromHex( '#0000CC' ) ),
+                $this->equalTo( new ezcGraphCoordinate( .3, .5 ), .05 ),
+                $this->equalTo( new ezcGraphCoordinate( .3, .521 ), .05 )
+            );
+        $mockedRenderer
+            ->expects( $this->at( 7 ) )
+            ->method( 'drawStackedBar' )
+            ->with(
+                $this->equalTo( new ezcGraphBoundings( 140., 20., 460., 180. ), 1. ),
+                $this->equalTo( new ezcGraphContext( 'moreData', 'sample 3' ) ),
+                $this->equalTo( ezcGraphColor::fromHex( '#0000CC' ) ),
+                $this->equalTo( new ezcGraphCoordinate( .5, .5 ), .05 ),
+                $this->equalTo( new ezcGraphCoordinate( .5, .176 ), .05 )
+            );
+        $mockedRenderer
+            ->expects( $this->at( 8 ) )
+            ->method( 'drawStackedBar' )
+            ->with(
+                $this->equalTo( new ezcGraphBoundings( 140., 20., 460., 180. ), 1. ),
+                $this->equalTo( new ezcGraphContext( 'moreData', 'sample 4' ) ),
+                $this->equalTo( ezcGraphColor::fromHex( '#0000CC' ) ),
+                $this->equalTo( new ezcGraphCoordinate( .7, .38 ), .05 ),
+                $this->equalTo( new ezcGraphCoordinate( .7, .16 ), .05 )
+            );
+        $mockedRenderer
+            ->expects( $this->at( 9 ) )
+            ->method( 'drawStackedBar' )
+            ->with(
+                $this->equalTo( new ezcGraphBoundings( 140., 20., 460., 180. ), 1. ),
+                $this->equalTo( new ezcGraphContext( 'moreData', 'sample 5' ) ),
+                $this->equalTo( ezcGraphColor::fromHex( '#0000CC' ) ),
+                $this->equalTo( new ezcGraphCoordinate( .9, .516 ), .05 ),
+                $this->equalTo( new ezcGraphCoordinate( .9, .55 ), .05 )
+            );
+
+        $chart->renderer = $mockedRenderer;
+
+        $chart->render( 500, 200 );
+    }
+
     public function testRenderChartFilledLines()
     {
         $chart = new ezcGraphLineChart();
@@ -817,5 +908,86 @@ class ezcGraphLineChartTest extends ezcGraphTestCase
             $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
         );
     }
+
+    public function testStackedBarChart()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.svg';
+
+        $chart = new ezcGraphBarChart();
+
+        $chart->options->stackBars = true;
+
+        $chart->data['sample'] = new ezcGraphArrayDataSet( array(
+            'Mozilla' => 4375,
+            'IE' => 345,
+            'Opera' => 1204,
+            'wget' => 231,
+            'Safari' => 987,
+        ) );
+
+        $chart->data['sample 2'] = new ezcGraphArrayDataSet( array(
+            'Mozilla' => 4352,
+            'IE' => 745,
+            'Opera' => 204,
+            'wget' => 2231,
+            'Safari' => 487,
+        ) );
+
+        $chart->data['sample 3'] = new ezcGraphArrayDataSet( array(
+            'Mozilla' => 234,
+            'IE' => 100,
+            'Opera' => 0,
+            'wget' => -934,
+            'Safari' => 2043,
+        ) );
+
+        $chart->render( 500, 200, $filename );
+
+        $this->compare(
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
+        );
+    }
+
+    public function testStackedBarChart3d()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.svg';
+
+        $chart = new ezcGraphBarChart();
+
+        $chart->options->stackBars = true;
+
+        $chart->data['sample'] = new ezcGraphArrayDataSet( array(
+            'Mozilla' => 4375,
+            'IE' => 345,
+            'Opera' => 1204,
+            'wget' => 231,
+            'Safari' => 987,
+        ) );
+
+        $chart->data['sample 2'] = new ezcGraphArrayDataSet( array(
+            'Mozilla' => 4352,
+            'IE' => 745,
+            'Opera' => 204,
+            'wget' => 2231,
+            'Safari' => 487,
+        ) );
+
+        $chart->data['sample 3'] = new ezcGraphArrayDataSet( array(
+            'Mozilla' => 234,
+            'IE' => 100,
+            'Opera' => 0,
+            'wget' => -934,
+            'Safari' => 2043,
+        ) );
+
+        $chart->renderer = new ezcGraphRenderer3d();
+        $chart->render( 500, 200, $filename );
+
+        $this->compare(
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
+        );
+    }
 }
 ?>
diff --git a/tests/renderer_2d_test.php b/tests/renderer_2d_test.php
index aeebf2b..a3ccda2 100644
--- a/tests/renderer_2d_test.php
+++ b/tests/renderer_2d_test.php
@@ -366,6 +366,46 @@ class ezcGraphRenderer2dTest extends ezcGraphTestCase
         );
     }
 
+    public function testRenderStackedBar()
+    {
+        $this->driver
+            ->expects( $this->at( 0 ) )
+            ->method( 'drawPolygon' )
+            ->with(
+                $this->equalTo( array( 
+                    new ezcGraphCoordinate( 155, 40. ),
+                    new ezcGraphCoordinate( 155, 120. ),
+                    new ezcGraphCoordinate( 245, 120. ),
+                    new ezcGraphCoordinate( 245, 40. ),
+                ), 1. ),
+                $this->equalTo( ezcGraphColor::fromHex( '#FF0000' ) ),
+                $this->equalTo( true )
+            );
+        $this->driver
+            ->expects( $this->at( 1 ) )
+            ->method( 'drawPolygon' )
+            ->with(
+                $this->equalTo( array( 
+                    new ezcGraphCoordinate( 155, 40. ),
+                    new ezcGraphCoordinate( 155, 120. ),
+                    new ezcGraphCoordinate( 245, 120. ),
+                    new ezcGraphCoordinate( 245, 40. ),
+                ), 1. ),
+                $this->equalTo( ezcGraphColor::fromHex( '#800000' ) ),
+                $this->equalTo( false )
+            );
+
+        $this->renderer->drawStackedBar( 
+            new ezcGraphBoundings( 0, 0, 400, 200 ),
+            new ezcGraphContext(),
+            ezcGraphColor::fromHex( '#FF0000' ), 
+            new ezcGraphCoordinate( .5, .2 ),
+            new ezcGraphCoordinate( .5, .6 ),
+            100,
+            0
+        );
+    }
+
     public function testRenderDataLine()
     {
         $this->driver