style: add custom style for QCheckBox for dark theme

res.qrc

@@ -84,6 +84,8 @@
         <file>themes/dark/msgEdit/msgEdit.css</file>
         <file>themes/dark/settings/mainContent.css</file>
         <file>themes/dark/settings/mainHead.css</file>
+        <file>themes/dark/settings/checkboxChecked.svg</file>
+        <file>themes/dark/settings/checkboxCheckedDisabled.svg</file>
         <file>themes/dark/statusButton/statusButton.css</file>
         <file>themes/dark/statusButton/menu_indicator.svg</file>
         <file>themes/dark/window/general.css</file>

themes/dark/settings/checkboxChecked.svg

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<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"
+   version="1.1"
+   width="12"
+   height="12"
+   viewBox="0 0 11.999999 12"
+   id="Layer_1"
+   xml:space="preserve"
+   inkscape:version="0.92.4 5da689c313, 2019-01-14"
+   sodipodi:docname="checkboxChecked.svg"><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="1015"
+     id="namedview6"
+     showgrid="false"
+     inkscape:zoom="39.333333"
+     inkscape:cx="-1.2584748"
+     inkscape:cy="5.4642197"
+     inkscape:window-x="0"
+     inkscape:window-y="36"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="Layer_1" /><metadata
+     id="metadata9"><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 /></cc:Work></rdf:RDF></metadata><defs
+     id="defs7" /><path
+     d="M 11.17966,1.8934443 4.1597484,9.1919256 0.79836133,5.8676812"
+     id="path2999"
+     style="fill:none;stroke:#c3c3c3;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+     inkscape:connector-curvature="0" /></svg>

themes/dark/settings/checkboxCheckedDisabled.svg

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<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"
+   version="1.1"
+   width="12"
+   height="12"
+   viewBox="0 0 11.999999 12"
+   id="Layer_1"
+   xml:space="preserve"
+   inkscape:version="0.92.4 5da689c313, 2019-01-14"
+   sodipodi:docname="checkboxCheckedDisabled.svg"><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="1015"
+     id="namedview6"
+     showgrid="false"
+     inkscape:zoom="39.333333"
+     inkscape:cx="-14.297181"
+     inkscape:cy="5.4642197"
+     inkscape:window-x="0"
+     inkscape:window-y="36"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="Layer_1" /><metadata
+     id="metadata9"><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 /></cc:Work></rdf:RDF></metadata><defs
+     id="defs7" /><path
+     d="M 11.17966,1.8934443 4.1597484,9.1919256 0.79836133,5.8676812"
+     id="path2999"
+     style="fill:none;stroke:#37353f;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:0.94117647"
+     inkscape:connector-curvature="0" /></svg>

themes/dark/settings/mainContent.css

@@ -22,11 +22,36 @@ QCheckBox
     color: @mainText;
 }
 
+QCheckBox::indicator {
+    width: 12px;
+    height: 12px;
+    border: 2px solid #514f4f;
+    border-radius: 2px;
+}
+
+QCheckBox::indicator:checked {
+    image: url("@getImagePath(settings/checkboxChecked.svg)");
+}
+
+QCheckBox::indicator:checked:pressed,
+QCheckBox::indicator:unchecked:pressed {
+    background: #514f4f;
+}
+
 QCheckBox:disabled
 {
     color: grey;
 }
 
+QCheckBox:indicator:disabled {
+    border: 2px solid #373535;
+    border-radius: 2px;
+}
+
+QCheckBox:indicator:checked:disabled {
+    image: url("@getImagePath(settings/checkboxCheckedDisabled.svg)");
+}
+
 QSpinBox, QDoubleSpinBox
 {
     background-color: @groundBase;