GUI: prepare to add auto-clone feature

src/gui/gui.cpp

@@ -3970,6 +3970,10 @@ bool FurnaceGUI::loop() {
     ImGui_ImplSDL2_NewFrame(sdlWin);
     ImGui::NewFrame();
 
+    // one second counter
+    secondTimer+=ImGui::GetIO().DeltaTime;
+    if (secondTimer>=1.0f) secondTimer=fmod(secondTimer,1.0f);
+
     curWindowLast=curWindow;
     curWindow=GUI_WINDOW_NOTHING;
     editOptsVisible=false;
@@ -3987,6 +3991,19 @@ bool FurnaceGUI::loop() {
       oldRow=nextOldRow;
     }
 
+    // check whether pattern of channel(s) at cursor/selection is/are unique
+    isPatUnique=true;
+    if (curOrder>=0 && curOrder<e->curSubSong->ordersLen && selStart.xCoarse>=0 && selStart.xCoarse<e->getTotalChannelCount() && selEnd.xCoarse>=0 && selEnd.xCoarse<e->getTotalChannelCount()) {
+      for (int i=0; i<e->curSubSong->ordersLen; i++) {
+        if (i==curOrder) continue;
+        for (int j=selStart.xCoarse; j<=selEnd.xCoarse; j++) {
+          if (e->curSubSong->orders.ord[j][i]==e->curSubSong->orders.ord[j][curOrder]) isPatUnique=false;
+          break;
+        }
+        if (!isPatUnique) break;
+      }
+    }
+
     if (!mobileUI) {
       ImGui::BeginMainMenuBar();
       if (ImGui::BeginMenu(settings.capitalMenuBar?"File":"file")) {
@@ -7106,6 +7123,8 @@ FurnaceGUI::FurnaceGUI():
   warnQuit(false),
   willCommit(false),
   edit(false),
+  editClone(false),
+  isPatUnique(false),
   modified(false),
   displayError(false),
   displayExporting(false),
@@ -7152,6 +7171,7 @@ FurnaceGUI::FurnaceGUI():
   wheelCalmDown(0),
   shallDetectScale(0),
   cpuCores(0),
+  secondTimer(0.0f),
   userEvents(0xffffffff),
   mobileMenuPos(0.0f),
   autoButtonSize(0.0f),

src/gui/gui.h

@@ -127,6 +127,7 @@ enum FurnaceGUIColors {
   GUI_COLOR_TOGGLE_OFF,
   GUI_COLOR_TOGGLE_ON,
   GUI_COLOR_EDITING,
+  GUI_COLOR_EDITING_CLONE,
   GUI_COLOR_SONG_LOOP,
   GUI_COLOR_DESTRUCTIVE,
   GUI_COLOR_WARNING,
@@ -1344,7 +1345,7 @@ class FurnaceGUI {
   std::vector<String> availRenderDrivers;
   std::vector<String> availAudioDrivers;
 
-  bool quit, warnQuit, willCommit, edit, modified, displayError, displayExporting, vgmExportLoop, zsmExportLoop, zsmExportOptimize, vgmExportPatternHints;
+  bool quit, warnQuit, willCommit, edit, editClone, isPatUnique, modified, displayError, displayExporting, vgmExportLoop, zsmExportLoop, zsmExportOptimize, vgmExportPatternHints;
   bool vgmExportDirectStream, displayInsTypeList;
   bool portrait, injectBackUp, mobileMenuOpen, warnColorPushed;
   bool wantCaptureKeyboard, oldWantCaptureKeyboard, displayMacroMenu;
@@ -1367,6 +1368,7 @@ class FurnaceGUI {
   int wheelCalmDown;
   int shallDetectScale;
   int cpuCores;
+  float secondTimer;
   unsigned int userEvents;
   float mobileMenuPos, autoButtonSize, mobileEditAnim;
   ImVec2 mobileEditButtonPos, mobileEditButtonSize;

src/gui/guiConst.cpp

@@ -810,6 +810,7 @@ const FurnaceGUIColorDef guiColors[GUI_COLOR_MAX]={
   D(GUI_COLOR_TOGGLE_OFF,"",ImVec4(0.2f,0.2f,0.2f,1.0f)),
   D(GUI_COLOR_TOGGLE_ON,"",ImVec4(0.2f,0.6f,0.2f,1.0f)),
   D(GUI_COLOR_EDITING,"",ImVec4(0.2f,0.1f,0.1f,1.0f)),
+  D(GUI_COLOR_EDITING_CLONE,"",ImVec4(0.2f,0.1f,0.3f,1.0f)),
   D(GUI_COLOR_SONG_LOOP,"",ImVec4(0.3f,0.5f,0.8f,0.4f)),
   D(GUI_COLOR_DESTRUCTIVE,"",ImVec4(1.0f,0.2f,0.2f,1.0f)),
   D(GUI_COLOR_WARNING,"",ImVec4(0.98f,0.98f,0.06f,1.0f)),

src/gui/pattern.cpp

@@ -101,7 +101,11 @@ inline void FurnaceGUI::patternRow(int i, bool isPlaying, float lineHeight, int
   // check overflow highlight
   if (settings.overflowHighlight) {
     if (edit && cursor.y==i && curWindowLast==GUI_WINDOW_PATTERN) {
-      ImGui::TableSetBgColor(ImGuiTableBgTarget_RowBg0,ImGui::GetColorU32(uiColors[GUI_COLOR_EDITING]));
+      if (editClone && !isPatUnique && secondTimer<0.5) {
+        ImGui::TableSetBgColor(ImGuiTableBgTarget_RowBg0,ImGui::GetColorU32(uiColors[GUI_COLOR_EDITING_CLONE]));
+      } else {
+        ImGui::TableSetBgColor(ImGuiTableBgTarget_RowBg0,ImGui::GetColorU32(uiColors[GUI_COLOR_EDITING]));
+      }
     } else if (isPlaying && oldRow==i && ord==playOrder) {
       ImGui::TableSetBgColor(ImGuiTableBgTarget_RowBg0,ImGui::GetColorU32(uiColors[GUI_COLOR_PATTERN_PLAY_HEAD]));
     } else if (e->curSubSong->hilightB>0 && !(i%e->curSubSong->hilightB)) {
@@ -112,7 +116,11 @@ inline void FurnaceGUI::patternRow(int i, bool isPlaying, float lineHeight, int
   } else {
     isPushing=true;
     if (edit && cursor.y==i && curWindowLast==GUI_WINDOW_PATTERN) {
-      ImGui::PushStyleColor(ImGuiCol_Header,ImGui::GetColorU32(uiColors[GUI_COLOR_EDITING]));
+      if (editClone && !isPatUnique && secondTimer<0.5) {
+        ImGui::PushStyleColor(ImGuiCol_Header,ImGui::GetColorU32(uiColors[GUI_COLOR_EDITING_CLONE]));
+      } else {
+        ImGui::PushStyleColor(ImGuiCol_Header,ImGui::GetColorU32(uiColors[GUI_COLOR_EDITING]));
+      }
     } else if (isPlaying && oldRow==i && ord==playOrder) {
       ImGui::PushStyleColor(ImGuiCol_Header,ImGui::GetColorU32(uiColors[GUI_COLOR_PATTERN_PLAY_HEAD]));
     } else if (e->curSubSong->hilightB>0 && !(i%e->curSubSong->hilightB)) {

src/gui/settings.cpp

@@ -3158,6 +3158,7 @@ void FurnaceGUI::drawSettings() {
           UI_COLOR_CONFIG(GUI_COLOR_TOGGLE_ON,"Toggle on");
           UI_COLOR_CONFIG(GUI_COLOR_TOGGLE_OFF,"Toggle off");
           UI_COLOR_CONFIG(GUI_COLOR_EDITING,"Editing");
+          UI_COLOR_CONFIG(GUI_COLOR_EDITING_CLONE,"Editing (will clone)");
           UI_COLOR_CONFIG(GUI_COLOR_SONG_LOOP,"Song loop");
           UI_COLOR_CONFIG(GUI_COLOR_PLAYBACK_STAT,"Playback status");
           UI_COLOR_CONFIG(GUI_COLOR_DESTRUCTIVE,"Destructive hint");