Disable double-click -> ESC translation for main menu

src/guiEngine.cpp

@@ -194,7 +194,8 @@ GUIEngine::GUIEngine(	irr::IrrlichtDevice* dev,
 			m_texture_source,
 			m_formspecgui,
 			m_buttonhandler,
-			NULL);
+			NULL,
+			false);
 
 	m_menu->allowClose(false);
 	m_menu->lockSize(true,v2u32(800,600));

src/guiFormSpecMenu.cpp

@@ -77,7 +77,7 @@ GUIFormSpecMenu::GUIFormSpecMenu(irr::IrrlichtDevice* dev,
 		gui::IGUIElement* parent, s32 id, IMenuManager *menumgr,
 		InventoryManager *invmgr, IGameDef *gamedef,
 		ISimpleTextureSource *tsrc, IFormSource* fsrc, TextDest* tdst,
-		Client* client) :
+		Client* client, bool remap_dbl_click) :
 	GUIModalMenu(dev->getGUIEnvironment(), parent, id, menumgr),
 	m_device(dev),
 	m_invmgr(invmgr),
@@ -97,7 +97,8 @@ GUIFormSpecMenu::GUIFormSpecMenu(irr::IrrlichtDevice* dev,
 	m_text_dst(tdst),
 	m_formspec_version(0),
 	m_focused_element(L""),
-	m_font(NULL)
+	m_font(NULL),
+	m_remap_dbl_click(remap_dbl_click)
 #ifdef __ANDROID__
 	,m_JavaDialogFieldName(L"")
 #endif
@@ -2939,15 +2940,18 @@ bool GUIFormSpecMenu::preprocessEvent(const SEvent& event)
 bool GUIFormSpecMenu::DoubleClickDetection(const SEvent event)
 {
 	/* The following code is for capturing double-clicks of the mouse button
-	 * that are *not* in/in a control (i.e. when the mouse if positioned in an
-	 * unused area of the formspec) and translating the double-click into an
-	 * EET_KEY_INPUT_EVENT event which closes the form.
+	 * and translating the double-click into an EET_KEY_INPUT_EVENT event
+	 * -- which closes the form -- under some circumstances.
 	 *
 	 * There have been many github issues reporting this as a bug even though it
-	 * was an intended feature.  For this reason the code has been disabled for
-	 * non-Android builds
+	 * was an intended feature.  For this reason, remapping the double-click as
+	 * an ESC must be explicitly set when creating this class via the
+	 * /p remap_dbl_click parameter of the constructor.
 	 */
-#ifdef __ANDROID__
+
+	if (!m_remap_dbl_click)
+		return false;
+
 	if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN) {
 		m_doubleclickdetect[0].pos  = m_doubleclickdetect[1].pos;
 		m_doubleclickdetect[0].time = m_doubleclickdetect[1].time;
@@ -2986,7 +2990,7 @@ bool GUIFormSpecMenu::DoubleClickDetection(const SEvent event)
 		delete translated;
 		return true;
 	}
-#endif
+
 	return false;
 }
 

src/guiFormSpecMenu.h

@@ -210,8 +210,8 @@ public:
 			ISimpleTextureSource *tsrc,
 			IFormSource* fs_src,
 			TextDest* txt_dst,
-			Client* client
-			);
+			Client* client,
+			bool remap_dbl_click = true);
 
 	~GUIFormSpecMenu();
 
@@ -436,6 +436,14 @@ private:
 	std::wstring m_JavaDialogFieldName;
 #endif
 
+	/* If true, remap a double-click (or double-tap) action to ESC. This is so
+	 * that, for example, Android users can double-tap to close a formspec.
+	*
+	 * This value can (currently) only be set by the class constructor
+	 * and the default value for the setting is true.
+	 */
+	bool m_remap_dbl_click;
+
 };
 
 class FormspecFormSource: public IFormSource