Add "lock modules" to toolbar

include/app.hpp

@@ -145,6 +145,7 @@ struct RackWidget : OpaqueWidget {
 	WireContainer *wireContainer;
 	std::string lastPath;
 	Vec lastMousePos;
+	bool lockModules = false;
 
 	RackWidget();
 	~RackWidget();

res/icons/LICENSE.md

@@ -9,3 +9,4 @@ Cat by Nabilauzwa from the Noun Project
 Stopwatch by Arthur Shlain from the Noun Project
 Sound by Gregor Cresnar from the Noun Project
 Refresh by un·delivered from the Noun Project
+Lock by Andres Gleixner from the Noun Project

res/icons/noun_468341_cc.svg

@@ -0,0 +1,56 @@
+<?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"
+   version="1.1"
+   x="0px"
+   y="0px"
+   viewBox="-7074.5 3413.5 16 16"
+   enable-background="new -7074.5 3413.5 24 24"
+   xml:space="preserve"
+   id="svg12"
+   sodipodi:docname="noun_468341_cc.svg"
+   width="16"
+   height="16"
+   inkscape:version="0.92.2 2405546, 2018-03-11"><metadata
+     id="metadata18"><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="defs16" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1600"
+     inkscape:window-height="882"
+     id="namedview14"
+     showgrid="false"
+     inkscape:zoom="7.8666667"
+     inkscape:cx="-9.7372881"
+     inkscape:cy="15"
+     inkscape:window-x="0"
+     inkscape:window-y="18"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="svg12" /><g
+     id="g6"
+     transform="matrix(0.49999833,0,0,0.49999833,-3535.2618,1708.7557)"
+     style="fill:#b4b4b4;fill-opacity:1"><path
+       d="m -7066.5,3420.5 c 0,-2 1.054,-4.287 4,-4.287 2.973,0 4,2.287 4,4.287 v 3 h 3 v -3.509 c 0,-3.491 -3.196,-6.478 -7,-6.491 -4.063,-0.018 -7.002,2.991 -7,7 -0.01,0.084 0,3 0,3 h 3 z"
+       id="path2"
+       inkscape:connector-curvature="0"
+       style="fill:#b4b4b4;fill-opacity:1" /><rect
+       x="-7071.5"
+       y="3424.5"
+       width="18"
+       height="13"
+       id="rect4"
+       style="fill:#b4b4b4;fill-opacity:1" /></g></svg>

src/app/ModuleWidget.cpp

@@ -301,9 +301,11 @@ void ModuleWidget::onDragEnd(EventDragEnd &e) {
 }
 
 void ModuleWidget::onDragMove(EventDragMove &e) {
-	Rect newBox = box;
-	newBox.pos = gRackWidget->lastMousePos.minus(dragPos);
-	gRackWidget->requestModuleBoxNearest(this, newBox);
+	if (!gRackWidget->lockModules) {
+		Rect newBox = box;
+		newBox.pos = gRackWidget->lastMousePos.minus(dragPos);
+		gRackWidget->requestModuleBoxNearest(this, newBox);
+	}
 }
 
 

src/app/Toolbar.cpp

@@ -140,6 +140,15 @@ struct SampleRateButton : TooltipIconButton {
 	}
 };
 
+struct RackLockButton : TooltipIconButton {
+	RackLockButton() {
+		setSVG(SVG::load(assetGlobal("res/icons/noun_468341_cc.svg")));
+		tooltipText = "Lock modules";
+	}
+	void onAction(EventAction &e) override {
+		gRackWidget->lockModules ^= true;
+	}
+};
 
 
 Toolbar::Toolbar() {
@@ -176,6 +185,7 @@ Toolbar::Toolbar() {
 
 	layout->addChild(new SampleRateButton());
 	layout->addChild(new PowerMeterButton());
+	layout->addChild(new RackLockButton());
 
 	struct ZoomSlider : Slider {
 		void onAction(EventAction &e) override {