GUI: prepare for drag selection to move

src/gui/cursor.cpp

@@ -43,6 +43,22 @@ void FurnaceGUI::startSelection(int xCoarse, int xFine, int y, bool fullRow) {
     }
   }
 
+  if (settings.dragMovesSelection && !fullRow) {
+    if (xCoarse>=selStart.xCoarse && (xFine>=selStart.xFine || xCoarse>selStart.xCoarse) && y>=selStart.y &&
+        xCoarse<=selEnd.xCoarse && (xFine<=selEnd.xFine || xCoarse<selEnd.xCoarse) && y<=selEnd.y) {
+      dragging=true;
+      selecting=true;
+      selectingFull=false;
+      dragSourceX=xCoarse;
+      dragSourceY=y;
+      dragDestinationX=xCoarse;
+      dragDestinationY=y;
+      dragStart=selStart;
+      dragEnd=selEnd;
+      return;
+    }
+  }
+  
   if (fullRow) {
     selStart.xCoarse=firstChannel;
     selStart.xFine=0;
@@ -68,6 +84,20 @@ void FurnaceGUI::startSelection(int xCoarse, int xFine, int y, bool fullRow) {
 
 void FurnaceGUI::updateSelection(int xCoarse, int xFine, int y, bool fullRow) {
   if (!selecting) return;
+  if (dragging) {
+    dragDestinationX=xCoarse;
+    dragDestinationY=y;
+    cursorDrag.xCoarse=xCoarse;
+    cursorDrag.xFine=xFine;
+    cursorDrag.y=y;
+
+    selStart.xCoarse=dragStart.xCoarse+(dragDestinationX-dragSourceX);
+    selStart.xFine=dragStart.xFine;
+    selStart.y=dragStart.y+(dragDestinationY-dragSourceY);
+    selEnd.xCoarse=dragEnd.xCoarse+(dragDestinationX-dragSourceX);
+    selEnd.xFine=dragEnd.xFine;
+    selEnd.y=dragEnd.y+(dragDestinationY-dragSourceY);
+  } else {
     if (selectingFull) {
       DETERMINE_LAST;
       selEnd.xCoarse=lastChannel-1;
@@ -78,6 +108,7 @@ void FurnaceGUI::updateSelection(int xCoarse, int xFine, int y, bool fullRow) {
       selEnd.xFine=xFine;
       selEnd.y=y;
     }
+  }
 }
 
 void FurnaceGUI::finishSelection() {
@@ -103,6 +134,18 @@ void FurnaceGUI::finishSelection() {
   selecting=false;
   selectingFull=false;
 
+  if (dragging) {
+    if (dragSourceX==dragDestinationX && dragSourceY==dragDestinationY) {
+      cursor=cursorDrag;
+      selStart=cursorDrag;
+      selEnd=cursorDrag;
+    } else { // perform drag
+      doDrag();
+    }
+
+    dragging=false;
+  }
+
   // boundary check
   int chanCount=e->getTotalChannelCount();
 

src/gui/editing.cpp

@@ -918,6 +918,32 @@ void FurnaceGUI::doExpand(int multiplier) {
   makeUndo(GUI_UNDO_PATTERN_EXPAND);
 }
 
+// 1. COPY
+// 2. CLEAR
+// 3. PASTE
+void FurnaceGUI::doDrag() {
+  int iCoarse=selStart.xCoarse;
+  int iFine=selStart.xFine;
+  for (; iCoarse<=selEnd.xCoarse; iCoarse++) {
+    if (!e->curSubSong->chanShow[iCoarse]) continue;
+    DivPattern* pat=e->curPat[iCoarse].getPattern(e->curOrders->ord[iCoarse][curOrder],true);
+    for (; iFine<3+e->curPat[iCoarse].effectCols*2 && (iCoarse<selEnd.xCoarse || iFine<=selEnd.xFine); iFine++) {
+      for (int j=selStart.y; j<=selEnd.y; j++) {
+        if (iFine==0) {
+          pat->data[j][iFine]=0;
+          if (selStart.y==selEnd.y) pat->data[j][2]=-1;
+        }
+        pat->data[j][iFine+1]=(iFine<1)?0:-1;
+
+        if (selStart.y==selEnd.y && iFine>2 && iFine&1 && settings.effectDeletionAltersValue) {
+          pat->data[j][iFine+2]=-1;
+        }
+      }
+    }
+    iFine=0;
+  }
+}
+
 void FurnaceGUI::doUndo() {
   if (undoHist.empty()) return;
   UndoStep& us=undoHist.back();

src/gui/gui.cpp

@@ -4372,6 +4372,10 @@ FurnaceGUI::FurnaceGUI():
   latchTarget(0),
   wheelX(0),
   wheelY(0),
+  dragSourceX(0),
+  dragSourceY(0),
+  dragDestinationX(0),
+  dragDestinationY(0),
   exportFadeOut(5.0),
   editControlsOpen(true),
   ordersOpen(true),
@@ -4403,6 +4407,7 @@ FurnaceGUI::FurnaceGUI():
   findOpen(false),
   selecting(false),
   selectingFull(false),
+  dragging(false),
   curNibble(false),
   orderNibble(false),
   followOrders(true),

src/gui/gui.h

@@ -1024,6 +1024,7 @@ class FurnaceGUI {
     int effectValCellSpacing;
     int doubleClickColumn;
     int blankIns;
+    int dragMovesSelection;
     unsigned int maxUndoSteps;
     String mainFontPath;
     String patFontPath;
@@ -1124,6 +1125,7 @@ class FurnaceGUI {
       effectValCellSpacing(0),
       doubleClickColumn(1),
       blankIns(0),
+      dragMovesSelection(1),
       maxUndoSteps(100),
       mainFontPath(""),
       patFontPath(""),
@@ -1138,7 +1140,7 @@ class FurnaceGUI {
 
   int curIns, curWave, curSample, curOctave, curOrder, prevIns, oldRow, oldOrder, oldOrder1, editStep, exportLoops, soloChan, soloTimeout, orderEditMode, orderCursor;
   int loopOrder, loopRow, loopEnd, isClipping, extraChannelButtons, patNameTarget, newSongCategory, latchTarget;
-  int wheelX, wheelY;
+  int wheelX, wheelY, dragSourceX, dragSourceY, dragDestinationX, dragDestinationY;
 
   double exportFadeOut;
 
@@ -1148,8 +1150,8 @@ class FurnaceGUI {
   bool pianoOpen, notesOpen, channelsOpen, regViewOpen, logOpen, effectListOpen, chanOscOpen;
   bool subSongsOpen, findOpen;
 
-  SelectionPoint selStart, selEnd, cursor;
-  bool selecting, selectingFull, curNibble, orderNibble, followOrders, followPattern, changeAllOrders, mobileUI;
+  SelectionPoint selStart, selEnd, cursor, cursorDrag, dragStart, dragEnd;
+  bool selecting, selectingFull, dragging, curNibble, orderNibble, followOrders, followPattern, changeAllOrders, mobileUI;
   bool collapseWindow, demandScrollX, fancyPattern, wantPatName, firstFrame, tempoView, waveHex, lockLayout, editOptsVisible, latchNibble, nonLatchNibble;
   FurnaceGUIWindows curWindow, nextWindow, curWindowLast;
   float peak[2];
@@ -1465,6 +1467,7 @@ class FurnaceGUI {
   void startSelection(int xCoarse, int xFine, int y, bool fullRow=false);
   void updateSelection(int xCoarse, int xFine, int y, bool fullRow=false);
   void finishSelection();
+  void finishDrag();
 
   void moveCursor(int x, int y, bool select);
   void moveCursorPrevChannel(bool overflow);
@@ -1494,6 +1497,7 @@ class FurnaceGUI {
   void doRedo();
   void doFind();
   void doReplace();
+  void doDrag();
   void editOptions(bool topMenu);
   void noteInput(int num, int key, int vol=-1);
   void valueInput(int num, bool direct=false, int target=-1);

src/gui/settings.cpp

@@ -412,6 +412,11 @@ void FurnaceGUI::drawSettings() {
             settings.doubleClickColumn=doubleClickColumnB;
           }
           
+          bool dragMovesSelectionB=settings.dragMovesSelection;
+          if (ImGui::Checkbox("Allow dragging selection",&dragMovesSelectionB)) {
+            settings.dragMovesSelection=dragMovesSelectionB;
+          }
+
           bool allowEditDockingB=settings.allowEditDocking;
           if (ImGui::Checkbox("Allow docking editors",&allowEditDockingB)) {
             settings.allowEditDocking=allowEditDockingB;
@@ -2037,6 +2042,8 @@ void FurnaceGUI::syncSettings() {
   settings.effectValCellSpacing=e->getConfInt("effectValCellSpacing",0);
   settings.doubleClickColumn=e->getConfInt("doubleClickColumn",1);
   settings.blankIns=e->getConfInt("blankIns",0);
+  // SET TO 1 AFTER YOU ARE DONE
+  settings.dragMovesSelection=e->getConfInt("dragMovesSelection",0);
 
   clampSetting(settings.mainFontSize,2,96);
   clampSetting(settings.patFontSize,2,96);
@@ -2121,6 +2128,7 @@ void FurnaceGUI::syncSettings() {
   clampSetting(settings.effectValCellSpacing,0,32);
   clampSetting(settings.doubleClickColumn,0,1);
   clampSetting(settings.blankIns,0,1);
+  clampSetting(settings.dragMovesSelection,0,1);
 
   settings.initialSys=e->decodeSysDesc(e->getConfString("initialSys",""));
   if (settings.initialSys.size()<4) {
@@ -2254,6 +2262,7 @@ void FurnaceGUI::commitSettings() {
   e->setConf("effectValCellSpacing",settings.effectValCellSpacing);
   e->setConf("doubleClickColumn",settings.doubleClickColumn);
   e->setConf("blankIns",settings.blankIns);
+  e->setConf("dragMovesSelection",settings.dragMovesSelection);
 
   // colors
   for (int i=0; i<GUI_COLOR_MAX; i++) {