GUI: add "new" action

src/gui/doAction.cpp

@@ -32,6 +32,13 @@ const unsigned char avRequest[15]={
 
 void FurnaceGUI::doAction(int what) {
   switch (what) {
+    case GUI_ACTION_NEW:
+      if (modified) {
+        showWarning("Unsaved changes! Save changes before creating a new song?",GUI_WARN_NEW);
+      } else {
+        displayNew=true;
+      }
+      break;
     case GUI_ACTION_OPEN:
       if (modified) {
         showWarning("Unsaved changes! Save changes before opening another file?",GUI_WARN_OPEN);

src/gui/gui.cpp

@@ -3581,7 +3581,7 @@ bool FurnaceGUI::loop() {
     if (!mobileUI) {
       ImGui::BeginMainMenuBar();
       if (ImGui::BeginMenu("file")) {
-        if (ImGui::MenuItem("new...")) {
+        if (ImGui::MenuItem("new...",BIND_FOR(GUI_ACTION_NEW))) {
           if (modified) {
             showWarning("Unsaved changes! Save changes before creating a new song?",GUI_WARN_NEW);
           } else {

src/gui/gui.h

@@ -416,6 +416,7 @@ enum FurnaceGUIFMAlgs {
 
 enum FurnaceGUIActions {
   GUI_ACTION_GLOBAL_MIN=0,
+  GUI_ACTION_NEW,
   GUI_ACTION_OPEN,
   GUI_ACTION_OPEN_BACKUP,
   GUI_ACTION_SAVE,

src/gui/guiConst.cpp

@@ -462,6 +462,7 @@ const FurnaceGUIColors fxColors[256]={
 // format: ("ACTION_ENUM", "Action name", defaultBind)
 const FurnaceGUIActionDef guiActions[GUI_ACTION_MAX]={
   D("GLOBAL_MIN", "---Global", NOT_AN_ACTION),
+  D("NEW", "New", FURKMOD_CMD|SDLK_n),
   D("OPEN", "Open file", FURKMOD_CMD|SDLK_o),
   D("OPEN_BACKUP", "Restore backup", 0),
   D("SAVE", "Save file", FURKMOD_CMD|SDLK_s),

src/gui/settings.cpp

@@ -2092,6 +2092,7 @@ void FurnaceGUI::drawSettings() {
           if (ImGui::TreeNode("Global hotkeys")) {
             KEYBIND_CONFIG_BEGIN("keysGlobal");
 
+            UI_KEYBIND_CONFIG(GUI_ACTION_NEW);
             UI_KEYBIND_CONFIG(GUI_ACTION_OPEN);
             UI_KEYBIND_CONFIG(GUI_ACTION_OPEN_BACKUP);
             UI_KEYBIND_CONFIG(GUI_ACTION_SAVE);