GUI: add "set loop" to sample editor

TODO.md

@@ -3,12 +3,10 @@
 - additional YM2612 features
   - CSM
 - MSM6258 pitch and clock select
-- MSM6295 clock select
 - the last three compat flags
 - add OPL drum instrument type
 - Game Boy envelope macro/sequence
 - drag-and-drop ins/wave/sample loading
-- "set loop" in right click menu of sample editor
 - sample editor preview in selection
 - rewrite the system name detection function anyway
 - unified data view

src/gui/doAction.cpp

@@ -1231,6 +1231,22 @@ void FurnaceGUI::doAction(int what) {
       }
       break;
     }
+    case GUI_ACTION_SAMPLE_SET_LOOP: {
+      if (curSample<0 || curSample>=(int)e->song.sample.size()) break;
+      DivSample* sample=e->song.sample[curSample];
+      sample->prepareUndo(true);
+      e->lockEngine([this,sample]() {
+        SAMPLE_OP_BEGIN;
+
+        sample->trim(0,end);
+        sample->loopStart=start;
+        updateSampleTex=true;
+
+        e->renderSamples();
+      });
+      MARK_MODIFIED;
+      break;
+    }
 
     case GUI_ACTION_ORDERS_UP:
       if (curOrder>0) {

src/gui/gui.h

@@ -491,6 +491,7 @@ enum FurnaceGUIActions {
   GUI_ACTION_SAMPLE_ZOOM_OUT,
   GUI_ACTION_SAMPLE_ZOOM_AUTO,
   GUI_ACTION_SAMPLE_MAKE_INS,
+  GUI_ACTION_SAMPLE_SET_LOOP,
   GUI_ACTION_SAMPLE_MAX,
 
   GUI_ACTION_ORDERS_MIN,

src/gui/guiConst.cpp

@@ -631,6 +631,7 @@ const FurnaceGUIActionDef guiActions[GUI_ACTION_MAX]={
   D("SAMPLE_ZOOM_OUT", "Zoom out", FURKMOD_CMD|SDLK_MINUS),
   D("SAMPLE_ZOOM_AUTO", "Toggle auto-zoom", FURKMOD_CMD|SDLK_0),
   D("SAMPLE_MAKE_INS", "Create instrument from sample", 0),
+  D("SAMPLE_SET_LOOP", "Set loop to selection", FURKMOD_CMD|SDLK_l),
   D("SAMPLE_MAX", "", NOT_AN_ACTION),
 
   D("ORDERS_MIN", "---Orders", NOT_AN_ACTION),

src/gui/sampleEdit.cpp

@@ -1247,6 +1247,10 @@ void FurnaceGUI::drawSampleEdit() {
           if (ImGui::MenuItem("select all",BIND_FOR(GUI_ACTION_SAMPLE_SELECT_ALL))) {
             doAction(GUI_ACTION_SAMPLE_SELECT_ALL);
           }
+          ImGui::Separator();
+          if (ImGui::MenuItem("set loop to selection",BIND_FOR(GUI_ACTION_SAMPLE_SET_LOOP))) {
+            doAction(GUI_ACTION_SAMPLE_SET_LOOP);
+          }
           ImGui::EndPopup();
         }
 

src/gui/settings.cpp

@@ -1835,6 +1835,7 @@ void FurnaceGUI::drawSettings() {
             UI_KEYBIND_CONFIG(GUI_ACTION_SAMPLE_ZOOM_OUT);
             UI_KEYBIND_CONFIG(GUI_ACTION_SAMPLE_ZOOM_AUTO);
             UI_KEYBIND_CONFIG(GUI_ACTION_SAMPLE_MAKE_INS);
+            UI_KEYBIND_CONFIG(GUI_ACTION_SAMPLE_SET_LOOP);
 
             KEYBIND_CONFIG_END;
             ImGui::TreePop();