From dc7aec2dc1a7707aead575c54c960c067be1217e Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Fri, 2 Dec 2022 04:13:26 -0500
Subject: [PATCH] GUI: long hold?

---
 extern/imgui_patched/imgui.cpp | 10 ++++++++++
 extern/imgui_patched/imgui.h   |  1 +
 src/gui/gui.cpp                |  1 +
 src/gui/gui.h                  |  7 ++++++-
 src/gui/pattern.cpp            | 24 ++++++++++++++++++++++++
 5 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/extern/imgui_patched/imgui.cpp b/extern/imgui_patched/imgui.cpp
index 742127d6b..37b0b5dfe 100644
--- a/extern/imgui_patched/imgui.cpp
+++ b/extern/imgui_patched/imgui.cpp
@@ -7552,6 +7552,16 @@ void ImGui::EndDisabled()
         g.Style.Alpha = g.DisabledAlphaBackup; //PopStyleVar();
 }
 
+// IsInertialScroll()
+
+bool ImGui::IsInertialScroll()
+{
+  ImGuiWindow* window = GetCurrentWindow();
+  if (window==NULL) return false;
+  return window->InertialScroll;
+}
+
+
 // InhibitInertialScroll()
 
 void ImGui::InhibitInertialScroll()
diff --git a/extern/imgui_patched/imgui.h b/extern/imgui_patched/imgui.h
index 5359672e1..58dad2b61 100644
--- a/extern/imgui_patched/imgui.h
+++ b/extern/imgui_patched/imgui.h
@@ -839,6 +839,7 @@ namespace ImGui
     IMGUI_API void          EndDisabled();
 
     // Inertial scroll
+    IMGUI_API bool          IsInertialScroll();
     IMGUI_API void          InhibitInertialScroll();
 
     // Clipping
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index faba39198..eadac6d4b 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -5766,6 +5766,7 @@ FurnaceGUI::FurnaceGUI():
   curWindowLast(GUI_WINDOW_NOTHING),
   curWindowThreadSafe(GUI_WINDOW_NOTHING),
   lastPatternWidth(0.0f),
+  longThreshold(0.4f),
   latchNote(-1),
   latchIns(-2),
   latchVol(-1),
diff --git a/src/gui/gui.h b/src/gui/gui.h
index 128bbe26a..8a9e1e441 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -53,6 +53,11 @@
     _wi->std.waveMacro.vScroll=-1; \
   }
 
+#define CHECK_LONG_HOLD (mobileUI && ImGui::GetIO().MouseDown[ImGuiMouseButton_Left] && ImGui::GetIO().MouseDownDuration[ImGuiMouseButton_Left]>longThreshold && !ImGui::IsInertialScroll())
+
+// for now
+#define NOTIFY_LONG_HOLD logV("long hold");
+
 #define BIND_FOR(x) getKeyName(actionKeys[x],true).c_str()
 
 // TODO:
@@ -1425,7 +1430,7 @@ class FurnaceGUI {
   float peak[2];
   float patChanX[DIV_MAX_CHANS+1];
   float patChanSlideY[DIV_MAX_CHANS+1];
-  float lastPatternWidth;
+  float lastPatternWidth, longThreshold;
   String nextDesc;
   String nextDescName;
 
diff --git a/src/gui/pattern.cpp b/src/gui/pattern.cpp
index 483d66b53..89653daa1 100644
--- a/src/gui/pattern.cpp
+++ b/src/gui/pattern.cpp
@@ -128,6 +128,10 @@ inline void FurnaceGUI::patternRow(int i, bool isPlaying, float lineHeight, int
   if (ImGui::IsItemClicked()) {
     startSelection(0,0,i,true);
   }
+  if (CHECK_LONG_HOLD) {
+    ImGui::InhibitInertialScroll();
+    NOTIFY_LONG_HOLD;
+  }
   ImGui::PopStyleColor();
   // for each column
   for (int j=0; j<chans; j++) {
@@ -178,6 +182,10 @@ inline void FurnaceGUI::patternRow(int i, bool isPlaying, float lineHeight, int
     if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem)) {
       updateSelection(j,0,i);
     }
+    if (CHECK_LONG_HOLD) {
+      ImGui::InhibitInertialScroll();
+      NOTIFY_LONG_HOLD;
+    }
     ImGui::PopStyleColor();
 
     // the following is only visible when the channel is not collapsed
@@ -218,6 +226,10 @@ inline void FurnaceGUI::patternRow(int i, bool isPlaying, float lineHeight, int
       if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem)) {
         updateSelection(j,1,i);
       }
+      if (CHECK_LONG_HOLD) {
+        ImGui::InhibitInertialScroll();
+        NOTIFY_LONG_HOLD;
+      }
       ImGui::PopStyleColor();
     }
 
@@ -252,6 +264,10 @@ inline void FurnaceGUI::patternRow(int i, bool isPlaying, float lineHeight, int
       if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem)) {
         updateSelection(j,2,i);
       }
+      if (CHECK_LONG_HOLD) {
+        ImGui::InhibitInertialScroll();
+        NOTIFY_LONG_HOLD;
+      }
       ImGui::PopStyleColor();
     }
 
@@ -297,6 +313,10 @@ inline void FurnaceGUI::patternRow(int i, bool isPlaying, float lineHeight, int
         if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem)) {
           updateSelection(j,index-1,i);
         }
+        if (CHECK_LONG_HOLD) {
+          ImGui::InhibitInertialScroll();
+          NOTIFY_LONG_HOLD;
+        }
 
         // effect value
         if (pat->data[i][index+1]==-1) {
@@ -323,6 +343,10 @@ inline void FurnaceGUI::patternRow(int i, bool isPlaying, float lineHeight, int
         if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem)) {
           updateSelection(j,index,i);
         }
+        if (CHECK_LONG_HOLD) {
+          ImGui::InhibitInertialScroll();
+          NOTIFY_LONG_HOLD;
+        }
         ImGui::PopStyleColor();
       }
     }