downgrade .dmf to export status

src/gui/exportOptions.cpp

@@ -251,6 +251,33 @@ void FurnaceGUI::drawExportCommand(bool onWindow) {
   }
 }
 
+void FurnaceGUI::drawExportDMF(bool onWindow) {
+  exitDisabledTimer=1;
+
+  ImGui::Text(
+    "export in DefleMask module format.\n"
+    "only do it if you really, really need to, or are downgrading an existing .dmf."
+  );
+
+  ImGui::Text("format version:");
+  ImGui::RadioButton("1.1.3 and higher",&dmfExportVersion,0);
+  ImGui::RadioButton("1.0/legacy (0.12)",&dmfExportVersion,1);
+
+  if (onWindow) {
+    ImGui::Separator();
+    if (ImGui::Button("Cancel",ImVec2(200.0f*dpiScale,0))) ImGui::CloseCurrentPopup();
+    ImGui::SameLine();
+  }
+  if (ImGui::Button("Export",ImVec2(200.0f*dpiScale,0))) {
+    if (dmfExportVersion==1) {
+      openFileDialog(GUI_FILE_SAVE_DMF_LEGACY);
+    } else {
+      openFileDialog(GUI_FILE_SAVE_DMF);
+    }
+    ImGui::CloseCurrentPopup();
+  }
+}
+
 void FurnaceGUI::drawExport() {
   if (settings.exportOptionsLayout==1 || curExportType==GUI_EXPORT_NONE) {
     if (ImGui::BeginTabBar("ExportTypes")) {
@@ -290,6 +317,10 @@ void FurnaceGUI::drawExport() {
         drawExportCommand(true);
         ImGui::EndTabItem();
       }
+      if (ImGui::BeginTabItem("DMF")) {
+        drawExportDMF(true);
+        ImGui::EndTabItem();
+      }
       ImGui::EndTabBar();
     }
   } else switch (curExportType) {
@@ -311,6 +342,9 @@ void FurnaceGUI::drawExport() {
     case GUI_EXPORT_CMD_STREAM:
       drawExportCommand(true);
       break;
+    case GUI_EXPORT_DMF:
+      drawExportDMF(true);
+      break;
     default:
       ImGui::Text("congratulations! you've unlocked a secret panel.");
       if (ImGui::Button("Toggle hidden systems")) {

src/gui/gui.cpp

@@ -4156,12 +4156,6 @@ bool FurnaceGUI::loop() {
         if (ImGui::MenuItem("save as...",BIND_FOR(GUI_ACTION_SAVE_AS))) {
           openFileDialog(GUI_FILE_SAVE);
         }
-        if (ImGui::MenuItem("save as .dmf (1.1.3+)...")) {
-          openFileDialog(GUI_FILE_SAVE_DMF);
-        }
-        if (ImGui::MenuItem("save as .dmf (1.0/legacy)...")) {
-          openFileDialog(GUI_FILE_SAVE_DMF_LEGACY);
-        }
         ImGui::Separator();
         if (settings.exportOptionsLayout==0) {
           if (ImGui::BeginMenu("export audio...")) {
@@ -4200,6 +4194,10 @@ bool FurnaceGUI::loop() {
             drawExportCommand();
             ImGui::EndMenu();
           }
+          if (ImGui::BeginMenu("export .dmf...")) {
+            drawExportDMF();
+            ImGui::EndMenu();
+          }
         } else if (settings.exportOptionsLayout==2) {
           if (ImGui::MenuItem("export audio...")) {
             curExportType=GUI_EXPORT_AUDIO;
@@ -4237,6 +4235,10 @@ bool FurnaceGUI::loop() {
             curExportType=GUI_EXPORT_CMD_STREAM;
             displayExport=true;
           }
+          if (ImGui::MenuItem("export .dmf...")) {
+            curExportType=GUI_EXPORT_DMF;
+            displayExport=true;
+          }
         } else {
           if (ImGui::MenuItem("export...",BIND_FOR(GUI_ACTION_EXPORT))) {
             displayExport=true;
@@ -7813,6 +7815,7 @@ FurnaceGUI::FurnaceGUI():
   curTutorial(-1),
   curTutorialStep(0),
   audioExportType(0),
+  dmfExportVersion(0),
   curExportType(GUI_EXPORT_NONE) {
   // value keys
   valueKeys[SDLK_0]=0;

src/gui/gui.h

@@ -586,7 +586,8 @@ enum FurnaceGUIExportTypes {
   GUI_EXPORT_ZSM,
   GUI_EXPORT_CMD_STREAM,
   GUI_EXPORT_AMIGA_VAL,
-  GUI_EXPORT_TEXT
+  GUI_EXPORT_TEXT,
+  GUI_EXPORT_DMF
 };
 
 enum FurnaceGUIFMAlgs {
@@ -2462,6 +2463,7 @@ class FurnaceGUI {
 
   // export options
   int audioExportType;
+  int dmfExportVersion;
   FurnaceGUIExportTypes curExportType;
 
   void drawExportAudio(bool onWindow=false);
@@ -2470,6 +2472,7 @@ class FurnaceGUI {
   void drawExportAmigaVal(bool onWindow=false);
   void drawExportText(bool onWindow=false);
   void drawExportCommand(bool onWindow=false);
+  void drawExportDMF(bool onWindow=false);
 
   void drawSSGEnv(unsigned char type, const ImVec2& size);
   void drawWaveform(unsigned char type, bool opz, const ImVec2& size);