[gnome-games/wip/exalm/3ds: 8/8] Add a view switcher for 3ds




commit f7e52d83006c35857b7d9f184b8d1948128f8884
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sat Dec 5 18:21:12 2020 +0500

    Add a view switcher for 3ds

 .../icons/screen-layout-left-right-symbolic.svg    |  70 ++++++++++++
 .../icons/screen-layout-quick-switch-symbolic.svg  |  66 ++++++++++++
 .../icons/screen-layout-right-left-symbolic.svg    |  71 ++++++++++++
 .../icons/screen-layout-top-bottom-symbolic.svg    |  71 ++++++++++++
 .../data/icons/view-bottom-screen-symbolic.svg     |  66 ++++++++++++
 .../data/icons/view-top-screen-symbolic.svg        |  66 ++++++++++++
 plugins/nintendo-3ds/data/meson.build              |   6 ++
 .../nintendo-3ds/data/nintendo-3ds.gresource.xml   |  13 +++
 .../data/ui/nintendo-3ds-layout-item.ui            |  51 +++++++++
 .../data/ui/nintendo-3ds-layout-switcher.ui        |  76 +++++++++++++
 plugins/nintendo-3ds/src/meson.build               |   6 +-
 .../nintendo-3ds/src/nintendo-3ds-layout-item.vala |  32 ++++++
 .../src/nintendo-3ds-layout-switcher.vala          |  91 ++++++++++++++++
 plugins/nintendo-3ds/src/nintendo-3ds-layout.vala  | 103 ++++++++++++++++++
 plugins/nintendo-3ds/src/nintendo-3ds-plugin.vala  |   9 +-
 plugins/nintendo-3ds/src/nintendo-3ds-runner.vala  | 120 +++++++++++++++++++++
 16 files changed, 915 insertions(+), 2 deletions(-)
---
diff --git a/plugins/nintendo-3ds/data/icons/screen-layout-left-right-symbolic.svg 
b/plugins/nintendo-3ds/data/icons/screen-layout-left-right-symbolic.svg
new file mode 100644
index 00000000..66c963f4
--- /dev/null
+++ b/plugins/nintendo-3ds/data/icons/screen-layout-left-right-symbolic.svg
@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/";
+   xmlns:cc="http://creativecommons.org/ns#";
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
+   xmlns:svg="http://www.w3.org/2000/svg";
+   xmlns="http://www.w3.org/2000/svg";
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd";
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape";
+   width="16"
+   height="16"
+   version="1.1"
+   id="svg8"
+   sodipodi:docname="ds-touchscreen-right.svg"
+   inkscape:version="0.92.2 2405546, 2018-03-11">
+  <metadata
+     id="metadata14">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage"; />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs12" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="2560"
+     inkscape:window-height="1376"
+     id="namedview10"
+     showgrid="true"
+     inkscape:zoom="64"
+     inkscape:cx="3.6767386"
+     inkscape:cy="8.1664307"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg8">
+    <inkscape:grid
+       type="xygrid"
+       id="grid4526" />
+  </sodipodi:namedview>
+  <g
+     id="g873">
+    <rect
+       y="5.5"
+       x="7.5"
+       height="6"
+       width="6"
+       id="rect869"
+       
style="opacity:0.5;fill:#474747;fill-opacity:1;stroke:none;stroke-width:1.2544198;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
 />
+    <path
+       sodipodi:nodetypes="ssssssssscccccccccc"
+       inkscape:connector-curvature="0"
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2,2 h 11 c 0.942809,0 2,-1.057191 2,-2 z m -2,0 v 5 H 8 V 6 Z M 7,6 v 5 H 2 V 6 Z"
+       
style="fill:#474747;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
 />
+  </g>
+</svg>
diff --git a/plugins/nintendo-3ds/data/icons/screen-layout-quick-switch-symbolic.svg 
b/plugins/nintendo-3ds/data/icons/screen-layout-quick-switch-symbolic.svg
new file mode 100644
index 00000000..f2b61d32
--- /dev/null
+++ b/plugins/nintendo-3ds/data/icons/screen-layout-quick-switch-symbolic.svg
@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/";
+   xmlns:cc="http://creativecommons.org/ns#";
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
+   xmlns:svg="http://www.w3.org/2000/svg";
+   xmlns="http://www.w3.org/2000/svg";
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd";
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape";
+   width="16"
+   height="16"
+   version="1.1"
+   id="svg8"
+   sodipodi:docname="screen-layout-quick-switch-symbolic.svg"
+   inkscape:version="0.92.4 5da689c313, 2019-01-14">
+  <metadata
+     id="metadata14">
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+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage"; />
+        <dc:title />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs12" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1016"
+     id="namedview10"
+     showgrid="true"
+     inkscape:zoom="32"
+     inkscape:cx="8.3953872"
+     inkscape:cy="9.5898251"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg8">
+    <inkscape:grid
+       type="xygrid"
+       id="grid4526" />
+  </sodipodi:namedview>
+  <path
+     
style="opacity:0.5;fill:#474747;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+     d="m 9,1 c 0.942809,0 1.999979,1.057191 2,2 V 4 H 9 V 3 H 3 v 6 h 1 v 2 H 3 C 2.057191,11 
1.000021,9.942809 1,9 V 3 C 0.999979,2.057191 2.057191,1 3,1 Z"
+     id="path872"
+     inkscape:connector-curvature="0"
+     sodipodi:nodetypes="sccccccccsccss" />
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+     sodipodi:nodetypes="sccssccssccccc"
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+     
style="fill:#474747;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
 />
+</svg>
diff --git a/plugins/nintendo-3ds/data/icons/screen-layout-right-left-symbolic.svg 
b/plugins/nintendo-3ds/data/icons/screen-layout-right-left-symbolic.svg
new file mode 100644
index 00000000..0219572b
--- /dev/null
+++ b/plugins/nintendo-3ds/data/icons/screen-layout-right-left-symbolic.svg
@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/";
+   xmlns:cc="http://creativecommons.org/ns#";
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
+   xmlns:svg="http://www.w3.org/2000/svg";
+   xmlns="http://www.w3.org/2000/svg";
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd";
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape";
+   width="16"
+   height="16"
+   version="1.1"
+   id="svg8"
+   sodipodi:docname="ds-touchscreen-left.svg"
+   inkscape:version="0.92.2 2405546, 2018-03-11">
+  <metadata
+     id="metadata14">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage"; />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs12" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="2560"
+     inkscape:window-height="1376"
+     id="namedview10"
+     showgrid="true"
+     inkscape:zoom="64"
+     inkscape:cx="3.6767386"
+     inkscape:cy="8.1664307"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg8">
+    <inkscape:grid
+       type="xygrid"
+       id="grid4526" />
+  </sodipodi:namedview>
+  <g
+     id="g873"
+     transform="matrix(-1,0,0,1,15,0)">
+    <rect
+       y="5.5"
+       x="7.5"
+       height="6"
+       width="6"
+       id="rect869"
+       
style="opacity:0.5;fill:#474747;fill-opacity:1;stroke:none;stroke-width:1.2544198;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
 />
+    <path
+       sodipodi:nodetypes="ssssssssscccccccccc"
+       inkscape:connector-curvature="0"
+       id="path4659-5"
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+       
style="fill:#474747;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
 />
+  </g>
+</svg>
diff --git a/plugins/nintendo-3ds/data/icons/screen-layout-top-bottom-symbolic.svg 
b/plugins/nintendo-3ds/data/icons/screen-layout-top-bottom-symbolic.svg
new file mode 100644
index 00000000..5f633d76
--- /dev/null
+++ b/plugins/nintendo-3ds/data/icons/screen-layout-top-bottom-symbolic.svg
@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/";
+   xmlns:cc="http://creativecommons.org/ns#";
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
+   xmlns:svg="http://www.w3.org/2000/svg";
+   xmlns="http://www.w3.org/2000/svg";
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd";
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape";
+   width="16"
+   height="16"
+   version="1.1"
+   id="svg8"
+   sodipodi:docname="ds-touchscreen-bottom.svg"
+   inkscape:version="0.92.2 2405546, 2018-03-11">
+  <metadata
+     id="metadata14">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage"; />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs12" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="2560"
+     inkscape:window-height="1376"
+     id="namedview10"
+     showgrid="true"
+     inkscape:zoom="64"
+     inkscape:cx="3.6767386"
+     inkscape:cy="8.1664307"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg8">
+    <inkscape:grid
+       type="xygrid"
+       id="grid4526" />
+  </sodipodi:namedview>
+  <g
+     id="g873"
+     transform="matrix(0,1,1,0,-1,0)">
+    <rect
+       y="5.5"
+       x="7.5"
+       height="6"
+       width="6"
+       id="rect869"
+       
style="opacity:0.5;fill:#474747;fill-opacity:1;stroke:none;stroke-width:1.2544198;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
 />
+    <path
+       sodipodi:nodetypes="ssssssssscccccccccc"
+       inkscape:connector-curvature="0"
+       id="path4659-5"
+       d="M 15,6 C 15,5.057191 13.942809,4 13,4 H 2 C 1.057191,4 0,5.057191 0,6 v 5 c 0,0.942809 1.057191,2 
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+       
style="fill:#474747;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
 />
+  </g>
+</svg>
diff --git a/plugins/nintendo-3ds/data/icons/view-bottom-screen-symbolic.svg 
b/plugins/nintendo-3ds/data/icons/view-bottom-screen-symbolic.svg
new file mode 100644
index 00000000..fda93dbb
--- /dev/null
+++ b/plugins/nintendo-3ds/data/icons/view-bottom-screen-symbolic.svg
@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/";
+   xmlns:cc="http://creativecommons.org/ns#";
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
+   xmlns:svg="http://www.w3.org/2000/svg";
+   xmlns="http://www.w3.org/2000/svg";
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd";
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape";
+   width="16"
+   height="16"
+   version="1.1"
+   id="svg8"
+   sodipodi:docname="6-bottom.svg"
+   inkscape:version="0.92.4 5da689c313, 2019-01-14">
+  <metadata
+     id="metadata14">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage"; />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs12" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1016"
+     id="namedview10"
+     showgrid="true"
+     inkscape:zoom="32"
+     inkscape:cx="1.5549575"
+     inkscape:cy="8.7612104"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg8">
+    <inkscape:grid
+       type="xygrid"
+       id="grid4526" />
+  </sodipodi:namedview>
+  <path
+     sodipodi:nodetypes="sccssccssscscccscscccs"
+     inkscape:connector-curvature="0"
+     id="path858"
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+  <path
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+</svg>
diff --git a/plugins/nintendo-3ds/data/icons/view-top-screen-symbolic.svg 
b/plugins/nintendo-3ds/data/icons/view-top-screen-symbolic.svg
new file mode 100644
index 00000000..d9a3b696
--- /dev/null
+++ b/plugins/nintendo-3ds/data/icons/view-top-screen-symbolic.svg
@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/";
+   xmlns:cc="http://creativecommons.org/ns#";
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
+   xmlns:svg="http://www.w3.org/2000/svg";
+   xmlns="http://www.w3.org/2000/svg";
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd";
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape";
+   width="16"
+   height="16"
+   version="1.1"
+   id="svg8"
+   sodipodi:docname="6-top.svg"
+   inkscape:version="0.92.4 5da689c313, 2019-01-14">
+  <metadata
+     id="metadata14">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage"; />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs12" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1016"
+     id="namedview10"
+     showgrid="true"
+     inkscape:zoom="32"
+     inkscape:cx="1.5549575"
+     inkscape:cy="8.7612104"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg8">
+    <inkscape:grid
+       type="xygrid"
+       id="grid4526" />
+  </sodipodi:namedview>
+  <path
+     sodipodi:nodetypes="sccssccssscscccscscccs"
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+     id="path858"
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11.47125,11.868547 11.743,12 12,12 Z"
+     
style="fill:#474747;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
 />
+  <path
+     inkscape:connector-curvature="0"
+     id="path818"
+     d="m 9,1 c 0.942809,0 1.999979,1.057191 2,2 V 4 H 9 V 3 H 3 v 6 h 1 v 2 H 3 C 2.057191,11 
1.000021,9.942809 1,9 V 3 C 0.999979,2.057191 2.057191,1 3,1 Z"
+     
style="opacity:0.5;fill:#474747;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+     sodipodi:nodetypes="sccccccccsccss" />
+</svg>
diff --git a/plugins/nintendo-3ds/data/meson.build b/plugins/nintendo-3ds/data/meson.build
index 0d4b6c49..a63a87eb 100644
--- a/plugins/nintendo-3ds/data/meson.build
+++ b/plugins/nintendo-3ds/data/meson.build
@@ -1 +1,7 @@
 install_data (plugin_name + '.plugin', install_dir: plugins_dir)
+
+nintendo_3ds_resources = gnome.compile_resources (
+  'nintendo-3ds',
+  'nintendo-3ds.gresource.xml',
+  c_name: 'resources'
+)
diff --git a/plugins/nintendo-3ds/data/nintendo-3ds.gresource.xml 
b/plugins/nintendo-3ds/data/nintendo-3ds.gresource.xml
new file mode 100644
index 00000000..2e0900c6
--- /dev/null
+++ b/plugins/nintendo-3ds/data/nintendo-3ds.gresource.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/org/gnome/Games/plugins/nintendo-3ds">
+    <file>ui/nintendo-3ds-layout-item.ui</file>
+    <file>ui/nintendo-3ds-layout-switcher.ui</file>
+    <file>icons/screen-layout-left-right-symbolic.svg</file>
+    <file>icons/screen-layout-quick-switch-symbolic.svg</file>
+    <file>icons/screen-layout-right-left-symbolic.svg</file>
+    <file>icons/screen-layout-top-bottom-symbolic.svg</file>
+    <file>icons/view-bottom-screen-symbolic.svg</file>
+    <file>icons/view-top-screen-symbolic.svg</file>
+  </gresource>
+</gresources>
diff --git a/plugins/nintendo-3ds/data/ui/nintendo-3ds-layout-item.ui 
b/plugins/nintendo-3ds/data/ui/nintendo-3ds-layout-item.ui
new file mode 100644
index 00000000..dabf8b9b
--- /dev/null
+++ b/plugins/nintendo-3ds/data/ui/nintendo-3ds-layout-item.ui
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <requires lib="gtk+" version="3.24"/>
+  <template class="GamesNintendo3DsLayoutItem" parent="GtkListBoxRow">
+    <property name="visible">True</property>
+    <child>
+      <object class="GtkBox">
+        <property name="halign">start</property>
+        <property name="spacing">6</property>
+        <property name="valign">center</property>
+        <property name="visible">True</property>
+        <child>
+          <object class="GtkBox">
+            <property name="halign">start</property>
+            <property name="spacing">12</property>
+            <property name="valign">center</property>
+            <property name="visible">True</property>
+            <child>
+              <object class="GtkImage" id="icon">
+                <property name="visible">True</property>
+                <style>
+                  <class name="list-icon"/>
+                </style>
+              </object>
+            </child>
+            <child>
+              <object class="GtkLabel" id="title">
+                <property name="halign">start</property>
+                <property name="valign">center</property>
+                <property name="visible">True</property>
+                <property name="xalign">0</property>
+              </object>
+            </child>
+          </object>
+        </child>
+        <child>
+          <object class="GtkImage" id="checkmark">
+            <property name="visible">True</property>
+            <property name="valign">center</property>
+            <property name="halign">start</property>
+            <property name="opacity">0</property>
+            <property name="icon-name">emblem-ok-symbolic</property>
+            <style>
+              <class name="checkmark"/>
+            </style>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>
diff --git a/plugins/nintendo-3ds/data/ui/nintendo-3ds-layout-switcher.ui 
b/plugins/nintendo-3ds/data/ui/nintendo-3ds-layout-switcher.ui
new file mode 100644
index 00000000..419e4015
--- /dev/null
+++ b/plugins/nintendo-3ds/data/ui/nintendo-3ds-layout-switcher.ui
@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <requires lib="gtk+" version="3.24"/>
+  <template class="GamesNintendo3DsLayoutSwitcher" parent="GtkBox">
+    <property name="visible">True</property>
+
+    <child>
+      <object class="GtkRevealer" id="change_screen_revealer">
+        <property name="visible">True</property>
+        <property name="transition-type">slide-left</property>
+        <child>
+          <object class="GtkButton">
+            <property name="visible">True</property>
+            <property name="can-focus">False</property>
+            <property name="margin-end">6</property>
+            <signal name="clicked" handler="on_screen_changed"/>
+            <child internal-child="accessible">
+              <object class="AtkObject">
+                <property name="accessible-name" translatable="yes">Change Screen</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkImage" id="change_screen_image">
+                <property name="visible">True</property>
+              </object>
+            </child>
+           </object>
+        </child>
+      </object>
+    </child>
+    <child>
+      <object class="GtkMenuButton" id="layout_button">
+        <property name="visible">True</property>
+        <property name="can-focus">False</property>
+        <property name="popover">layout_popover</property>
+        <signal name="notify::active" handler="on_menu_state_changed"/>
+          <child internal-child="accessible">
+          <object class="AtkObject" id="a11y-display-discs">
+            <property name="accessible-name" translatable="yes">Screen Layout</property>
+          </object>
+        </child>
+        <child>
+          <object class="GtkBox">
+            <property name="visible">True</property>
+            <property name="spacing">6</property>
+            <child>
+              <object class="GtkImage" id="layout_image">
+                <property name="visible">True</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkImage">
+                <property name="visible">True</property>
+                <property name="icon-name">pan-down-symbolic</property>
+              </object>
+            </child>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+  <object class="GtkPopover" id="layout_popover">
+    <property name="visible">False</property>
+    <signal name="show" handler="update_ui"/>
+    <child>
+      <object class="GtkListBox" id="list_box">
+        <property name="visible">True</property>
+        <property name="selection-mode">none</property>
+        <signal name="row-activated" handler="on_row_activated"/>
+      </object>
+    </child>
+    <style>
+      <class name="combo"/>
+    </style>
+  </object>
+</interface>
diff --git a/plugins/nintendo-3ds/src/meson.build b/plugins/nintendo-3ds/src/meson.build
index b1aadedb..c55f1f0e 100644
--- a/plugins/nintendo-3ds/src/meson.build
+++ b/plugins/nintendo-3ds/src/meson.build
@@ -1,6 +1,10 @@
 vala_sources = [
   'nintendo-3ds-header.vala',
+  'nintendo-3ds-layout.vala',
+  'nintendo-3ds-layout-item.vala',
+  'nintendo-3ds-layout-switcher.vala',
   'nintendo-3ds-plugin.vala',
+  'nintendo-3ds-runner.vala',
 ]
 
 c_args = [
@@ -9,7 +13,7 @@ c_args = [
 
 shared_module (
   'games-' + plugin_name + '-plugin',
-  vala_sources,
+  vala_sources + nintendo_3ds_resources,
   dependencies: gnome_games_dep,
   c_args: c_args,
   install: true,
diff --git a/plugins/nintendo-3ds/src/nintendo-3ds-layout-item.vala 
b/plugins/nintendo-3ds/src/nintendo-3ds-layout-item.vala
new file mode 100644
index 00000000..213f66ad
--- /dev/null
+++ b/plugins/nintendo-3ds/src/nintendo-3ds-layout-item.vala
@@ -0,0 +1,32 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+[GtkTemplate (ui = "/org/gnome/Games/plugins/nintendo-3ds/ui/nintendo-3ds-layout-item.ui")]
+private class Games.Nintendo3DsLayoutItem : Gtk.ListBoxRow {
+       [GtkChild]
+       private Gtk.Image icon;
+       [GtkChild]
+       private Gtk.Label title;
+       [GtkChild]
+       private Gtk.Image checkmark;
+
+       public Nintendo3DsLayout layout { get; construct; }
+
+       public bool selected { get; set; default = false; }
+
+       public Nintendo3DsLayoutItem (Nintendo3DsLayout layout) {
+               Object (layout: layout);
+       }
+
+       construct {
+               notify["selected"].connect (() => {
+                       checkmark.opacity = selected ? 1 : 0;
+               });
+       }
+
+       public override void constructed () {
+               icon.icon_name = layout.get_icon ();
+               title.label = layout.get_title ();
+
+               base.constructed ();
+       }
+}
diff --git a/plugins/nintendo-3ds/src/nintendo-3ds-layout-switcher.vala 
b/plugins/nintendo-3ds/src/nintendo-3ds-layout-switcher.vala
new file mode 100644
index 00000000..29e00067
--- /dev/null
+++ b/plugins/nintendo-3ds/src/nintendo-3ds-layout-switcher.vala
@@ -0,0 +1,91 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+[GtkTemplate (ui = "/org/gnome/Games/plugins/nintendo-3ds/ui/nintendo-3ds-layout-switcher.ui")]
+private class Games.Nintendo3DsLayoutSwitcher : Gtk.Box, HeaderBarWidget {
+       [GtkChild]
+       private Gtk.Revealer change_screen_revealer;
+       [GtkChild]
+       private Gtk.Image change_screen_image;
+       [GtkChild]
+       private Gtk.MenuButton layout_button;
+       [GtkChild]
+       private Gtk.Image layout_image;
+       [GtkChild]
+       private Gtk.Popover layout_popover;
+       [GtkChild]
+       private Gtk.ListBox list_box;
+
+       private HashTable<Nintendo3DsLayout, Nintendo3DsLayoutItem> items;
+
+       public Nintendo3DsRunner runner { get; construct; }
+
+       private bool is_menu_open;
+       public bool block_autohide {
+               get { return is_menu_open; }
+       }
+
+       static construct {
+               var icon_theme = Gtk.IconTheme.get_default ();
+               icon_theme.add_resource_path ("/org/gnome/Games/plugins/nintendo-3ds/icons");
+       }
+
+       public override void constructed () {
+               items = new HashTable<Nintendo3DsLayout, Nintendo3DsLayoutItem> (direct_hash, direct_equal);
+               foreach (var layout in Nintendo3DsLayout.get_layouts ()) {
+                       var item = new Nintendo3DsLayoutItem (layout);
+
+                       items[layout] = item;
+                       list_box.add (item);
+               }
+
+               update_ui ();
+
+               runner.notify["screen-layout"].connect (update_ui);
+               runner.notify["view-bottom-screen"].connect (update_ui);
+
+               base.constructed ();
+       }
+
+       public Nintendo3DsLayoutSwitcher (Nintendo3DsRunner runner) {
+               Object (runner: runner);
+       }
+
+       [GtkCallback]
+       private void on_menu_state_changed () {
+               is_menu_open = layout_button.active;
+               notify_property ("block-autohide");
+       }
+
+       [GtkCallback]
+       private void update_ui () {
+               var layout = runner.screen_layout;
+               var view_bottom = runner.view_bottom_screen;
+
+               layout_image.icon_name = layout.get_icon ();
+
+               foreach (var item in items.get_values ())
+                       item.selected = item.layout == layout;
+
+               var item = items[layout];
+               list_box.select_row (item);
+
+               change_screen_revealer.reveal_child = (layout == Nintendo3DsLayout.QUICK_SWITCH);
+               change_screen_image.icon_name = view_bottom ?
+                                               "view-top-screen-symbolic" :
+                                               "view-bottom-screen-symbolic";
+       }
+
+       [GtkCallback]
+       private void on_screen_changed (Gtk.Button button) {
+               runner.view_bottom_screen = !runner.view_bottom_screen;
+       }
+
+       [GtkCallback]
+       private void on_row_activated (Gtk.ListBoxRow row) {
+               var layout_item = row as Nintendo3DsLayoutItem;
+
+               runner.screen_layout = layout_item.layout;
+
+               layout_popover.popdown ();
+       }
+}
diff --git a/plugins/nintendo-3ds/src/nintendo-3ds-layout.vala 
b/plugins/nintendo-3ds/src/nintendo-3ds-layout.vala
new file mode 100644
index 00000000..d5ba5e90
--- /dev/null
+++ b/plugins/nintendo-3ds/src/nintendo-3ds-layout.vala
@@ -0,0 +1,103 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+public enum Games.Nintendo3DsLayout {
+       TOP_BOTTOM,
+       LEFT_RIGHT,
+       RIGHT_LEFT,
+       QUICK_SWITCH;
+
+       public string get_value () {
+               switch (this) {
+               case TOP_BOTTOM:
+                       return "Default Top-Bottom Screen";
+
+               case LEFT_RIGHT:
+               case RIGHT_LEFT:
+                       return "Side by Side";
+
+               case QUICK_SWITCH:
+                       return "Single Screen Only";
+
+               default:
+                       assert_not_reached ();
+               }
+       }
+
+       public string get_icon () {
+               switch (this) {
+               case TOP_BOTTOM:
+                       return "screen-layout-top-bottom-symbolic";
+
+               case LEFT_RIGHT:
+                       return "screen-layout-left-right-symbolic";
+
+               case RIGHT_LEFT:
+                       return "screen-layout-right-left-symbolic";
+
+               case QUICK_SWITCH:
+                       return "screen-layout-quick-switch-symbolic";
+
+               default:
+                       assert_not_reached ();
+               }
+       }
+
+       public string get_title () {
+               switch (this) {
+               case TOP_BOTTOM:
+                       /* Translators: This describes the layout for the Nintendo DS
+                        * emulator. This setting means the two screens are stacked one on
+                        * top of the other */
+                       return _("Vertical");
+
+               case LEFT_RIGHT:
+                       /* Translators: This describes the layout for the Nintendo DS
+                        * emulator. This setting means the two screens are displayed side
+                        * by side and not one on top of the other. The bottom screen
+                        * (which is the touch screen) is displayed to the right of the top
+                        * screen, making it comfortable for right-handed persons. */
+                       return _("Side by side, right-handed");
+
+               case RIGHT_LEFT:
+                       /* Translators: This describes the layout for the Nintendo DS
+                        * emulator. This setting means the two screens are displayed side
+                        * by side and not one on top of the other. The bottom screen
+                        * (which is the touch screen) is displayed to the left of the top
+                        * screen, making it comfortable for left-handed persons. */
+                       return _("Side by side, left-handed");
+
+               case QUICK_SWITCH:
+                       /* Translators: This describes the layout for the Nintendo DS
+                        * emulator. This setting means only one screen is displayed at
+                        * once. The screen displayed can then be changed in-game. */
+                       return _("Single screen");
+
+               default:
+                       assert_not_reached ();
+               }
+       }
+
+       public static Nintendo3DsLayout[] get_layouts () {
+               return { TOP_BOTTOM, LEFT_RIGHT, RIGHT_LEFT, QUICK_SWITCH };
+       }
+
+       public static Nintendo3DsLayout? from_value (string value) {
+               switch (value) {
+               case "top/bottom":
+                       return TOP_BOTTOM;
+
+               case "left/right":
+                       return LEFT_RIGHT;
+
+               case "right/left":
+                       return RIGHT_LEFT;
+
+               case "quick switch":
+                       return QUICK_SWITCH;
+
+               default:
+                       warning ("Unknown screen layout: %s\n", value);
+                       return null;
+               }
+       }
+}
diff --git a/plugins/nintendo-3ds/src/nintendo-3ds-plugin.vala 
b/plugins/nintendo-3ds/src/nintendo-3ds-plugin.vala
index 976dc76b..d570e2d7 100644
--- a/plugins/nintendo-3ds/src/nintendo-3ds-plugin.vala
+++ b/plugins/nintendo-3ds/src/nintendo-3ds-plugin.vala
@@ -32,7 +32,8 @@ private class Games.Nintendo3DsPlugin : Object, Plugin {
        }
 
        public RunnerFactory[] get_runner_factories () {
-               var factory = new RetroRunnerFactory (platform);
+               var factory = new GenericRunnerFactory (create_runner);
+               factory.add_platform (platform);
 
                return { factory };
        }
@@ -58,6 +59,12 @@ private class Games.Nintendo3DsPlugin : Object, Plugin {
 
                return game;
        }
+
+       private static Runner? create_runner (Game game) throws Error {
+               var core_source = new RetroCoreSource (platform);
+
+               return new Nintendo3DsRunner (game, core_source);
+       }
 }
 
 [ModuleInit]
diff --git a/plugins/nintendo-3ds/src/nintendo-3ds-runner.vala 
b/plugins/nintendo-3ds/src/nintendo-3ds-runner.vala
new file mode 100644
index 00000000..7cad475d
--- /dev/null
+++ b/plugins/nintendo-3ds/src/nintendo-3ds-runner.vala
@@ -0,0 +1,120 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+private class Games.Nintendo3DsRunner : RetroRunner {
+       // Map the 1,2,3,4 key values to the 4 screen layouts of the Nintendo 3DS
+       private static HashTable<uint, Nintendo3DsLayout?> layouts;
+
+       private const string SCREENS_LAYOUT_OPTION = "citra_layout_option";
+       private const string PROMINENT_SCREEN_OPTION = "citra_swap_screen";
+
+       private const size_t HEADER_GAME_CODE_OFFSET = 12;
+       private const size_t HEADER_GAME_CODE_SIZE = 3;
+
+       private Nintendo3DsLayout _screen_layout;
+       public Nintendo3DsLayout screen_layout {
+               get { return _screen_layout; }
+               set {
+                       _screen_layout = value;
+                       update_screen_layout ();
+               }
+       }
+
+       private bool _view_bottom_screen;
+       public bool view_bottom_screen {
+               get { return _view_bottom_screen; }
+               set {
+                       _view_bottom_screen = value;
+                       update_screen_layout ();
+               }
+       }
+
+       static construct {
+               layouts = new HashTable<uint, Nintendo3DsLayout?> (direct_hash, direct_equal);
+
+               layouts[Gdk.Key.@1] = Nintendo3DsLayout.TOP_BOTTOM;
+               layouts[Gdk.Key.@2] = Nintendo3DsLayout.LEFT_RIGHT;
+               layouts[Gdk.Key.@3] = Nintendo3DsLayout.RIGHT_LEFT;
+               layouts[Gdk.Key.@4] = Nintendo3DsLayout.QUICK_SWITCH;
+       }
+
+       public Nintendo3DsRunner (Game game, RetroCoreSource source) {
+               base.from_source (game, source);
+       }
+
+       private bool core_supports_layouts () {
+               var core = get_core ();
+
+               return core != null && core.has_option (SCREENS_LAYOUT_OPTION) && core.has_option 
(PROMINENT_SCREEN_OPTION);
+       }
+
+       private void update_screen_layout () {
+               if (!core_supports_layouts ())
+                       return;
+
+               var core = get_core ();
+
+               var screens_layout_option = core.get_option (SCREENS_LAYOUT_OPTION);
+               var prominent_screen_option = core.get_option (PROMINENT_SCREEN_OPTION);
+
+               var screens_layout_option_value = screen_layout.get_value ();
+               bool use_bottom_screen = false;
+
+               if (screen_layout == Nintendo3DsLayout.RIGHT_LEFT)
+                       use_bottom_screen = true;
+
+               if (screen_layout == Nintendo3DsLayout.QUICK_SWITCH)
+                       use_bottom_screen = view_bottom_screen;
+
+               try {
+                       screens_layout_option.set_value (screens_layout_option_value);
+                       prominent_screen_option.set_value (use_bottom_screen ? "Bottom" : "Top");
+               }
+               catch (Error e) {
+                       critical ("Failed to set desmume option: %s", e.message);
+               }
+       }
+
+       public override HeaderBarWidget? get_extra_widget () {
+               if (!core_supports_layouts ())
+                       return null;
+
+               return new Nintendo3DsLayoutSwitcher (this);
+       }
+
+       public override bool key_press_event (uint keyval, Gdk.ModifierType state) {
+               if (state == Gdk.ModifierType.MOD1_MASK) {
+                       // Alt + 1|2|3|4
+                       var shortcut_layout = layouts[keyval];
+                       if (shortcut_layout != null) {
+                               screen_layout = shortcut_layout;
+
+                               return true;
+                       }
+               }
+
+               if (screen_layout != Nintendo3DsLayout.QUICK_SWITCH)
+                       return false;
+
+               var switch_keyval = view_bottom_screen ? Gdk.Key.Page_Up : Gdk.Key.Page_Down;
+               if (keyval == switch_keyval)
+                       return swap_screens ();
+
+               return false;
+       }
+
+       public override bool gamepad_button_press_event (uint16 button) {
+               if (button == EventCode.BTN_THUMBR)
+                       return swap_screens ();
+
+               return false;
+       }
+
+       private bool swap_screens () {
+               if (screen_layout != Nintendo3DsLayout.QUICK_SWITCH)
+                       return false;
+
+               view_bottom_screen = !view_bottom_screen;
+
+               return true;
+       }
+}


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