From 1d2c129c01c39a28e59d67a0d9e50c051416180c Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Sat, 11 Dec 2021 17:41:32 -0500
Subject: [PATCH] GUI: a rough FM ins editor

---
 CMakeLists.txt  |  1 +
 src/gui/gui.cpp | 78 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed36325a0..7d86f5533 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -112,6 +112,7 @@ extern/imgui/imgui_tables.cpp
 extern/imgui/imgui_widgets.cpp
 extern/imgui/backends/imgui_impl_sdlrenderer.cpp
 extern/imgui/backends/imgui_impl_sdl.cpp
+extern/imgui/misc/cpp/imgui_stdlib.cpp
 extern/igfd/ImGuiFileDialog.cpp
 
 src/gui/font_main.cpp
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index acc47b188..117298d72 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -2,8 +2,20 @@
 #include "fonts.h"
 #include "../ta-log.h"
 #include "imgui.h"
+#include "misc/cpp/imgui_stdlib.h"
 #include <fmt/printf.h>
 
+const int _ZERO=0;
+const int _THREE=3;
+const int _SEVEN=7;
+const int _FIFTEEN=15;;
+const int _THIRTY_ONE=31;
+const int _ONE_HUNDRED_TWENTY_SEVEN=127;
+
+const int opOrder[4]={
+  0, 2, 1, 3
+};
+
 void FurnaceGUI::bindEngine(DivEngine* eng) {
   e=eng;
 }
@@ -25,6 +37,21 @@ bool FurnaceGUI::loop() {
     ImGui_ImplSDL2_NewFrame(sdlWin);
     ImGui::NewFrame();
 
+    ImGui::BeginMainMenuBar();
+    if (ImGui::BeginMenu("file")) {
+      ImGui::MenuItem("new");
+      ImGui::MenuItem("open...");
+      ImGui::Separator();
+      ImGui::MenuItem("save");
+      ImGui::MenuItem("save as...");
+      ImGui::Separator();
+      if (ImGui::MenuItem("exit")) {
+        quit=true;
+      }
+      ImGui::EndMenu();
+    }
+    ImGui::EndMainMenuBar();
+
     if (ImGui::Begin("Debug")) {
       ImGui::Text("Hello world!\n");
       ImGui::InputScalar("Speed 1",ImGuiDataType_U8,&e->song.speed1);
@@ -52,6 +79,57 @@ bool FurnaceGUI::loop() {
     }
     ImGui::End();
 
+    if (ImGui::Begin("Instrument Editor")) {
+      if (curIns>=e->song.ins.size()) {
+        ImGui::Text("no instrument selected");
+      } else {
+        DivInstrument* ins=e->song.ins[curIns];
+        ImGui::InputText("Name",&ins->name);
+        ImGui::Checkbox("FM",&ins->mode);
+
+        if (ins->mode) { // FM
+          ImGui::SliderScalar("Algorithm",ImGuiDataType_U8,&ins->fm.alg,&_ZERO,&_SEVEN);
+          ImGui::SliderScalar("Feedback",ImGuiDataType_U8,&ins->fm.fb,&_ZERO,&_SEVEN);
+          ImGui::SliderScalar("LFO > Frequency",ImGuiDataType_U8,&ins->fm.fms,&_ZERO,&_SEVEN);
+          ImGui::SliderScalar("LFO > Amplitude",ImGuiDataType_U8,&ins->fm.ams,&_ZERO,&_THREE);
+          for (int i=0; i<4; i++) {
+            DivInstrumentFM::Operator& op=ins->fm.op[opOrder[i]];
+            ImGui::Separator();
+
+            ImGui::PushID(fmt::sprintf("op%d",i).c_str());
+            ImGui::Text("Operator %d",i+1);
+            ImGui::SliderScalar("Level",ImGuiDataType_U8,&op.tl,&_ZERO,&_ONE_HUNDRED_TWENTY_SEVEN);
+            ImGui::SliderScalar("Attack",ImGuiDataType_U8,&op.ar,&_ZERO,&_THIRTY_ONE);
+            ImGui::SliderScalar("Decay",ImGuiDataType_U8,&op.dr,&_ZERO,&_THIRTY_ONE);
+            ImGui::SliderScalar("Sustain",ImGuiDataType_U8,&op.sl,&_ZERO,&_FIFTEEN);
+            ImGui::SliderScalar("Decay 2",ImGuiDataType_U8,&op.d2r,&_ZERO,&_THIRTY_ONE);
+            ImGui::SliderScalar("Release",ImGuiDataType_U8,&op.rr,&_ZERO,&_FIFTEEN);
+            ImGui::SliderScalar("Multiplier",ImGuiDataType_U8,&op.mult,&_ZERO,&_FIFTEEN);
+            ImGui::SliderScalar("EnvScale",ImGuiDataType_U8,&op.rs,&_ZERO,&_THREE);
+            ImGui::SliderScalar("Detune",ImGuiDataType_U8,&op.dt,&_ZERO,&_SEVEN);
+            if (e->song.system==DIV_SYSTEM_ARCADE) {
+              ImGui::SliderScalar("Detune 2",ImGuiDataType_U8,&op.dt2,&_ZERO,&_THREE);
+            } else {
+              bool ssgOn=op.ssgEnv&8;
+              unsigned char ssgEnv=op.ssgEnv&7;
+              ImGui::SliderScalar("SSG-EG",ImGuiDataType_U8,&ssgEnv,&_ZERO,&_SEVEN);
+              ImGui::SameLine();
+              if (ImGui::Checkbox("##SSGOn",&ssgOn)) {
+                op.ssgEnv=(op.ssgEnv&7)|(ssgOn<<3);
+              }
+            }
+
+            bool amOn=op.am;
+            if (ImGui::Checkbox("AM",&amOn)) op.am=amOn;
+            ImGui::PopID();
+          }
+        } else { // STD
+          ImGui::Text("STD editor here");
+        }
+      }
+    }
+    ImGui::End();
+
     SDL_RenderClear(sdlRend);
     ImGui::Render();
     ImGui_ImplSDLRenderer_RenderDrawData(ImGui::GetDrawData());