From 4af768d2809a2c585477a4ce915dcfdc7499adf7 Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Sun, 17 Aug 2025 05:38:38 -0500
Subject: [PATCH] GUI: loop start/end hints, part 1

---
 src/gui/sampleEdit.cpp | 45 ++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 43 insertions(+), 2 deletions(-)

diff --git a/src/gui/sampleEdit.cpp b/src/gui/sampleEdit.cpp
index ac58350b7..784485d93 100644
--- a/src/gui/sampleEdit.cpp
+++ b/src/gui/sampleEdit.cpp
@@ -2042,12 +2042,53 @@ void FurnaceGUI::drawSampleEdit() {
         }
         dl->PopClipRect();
 
+        //bool displayLoopHintsNES=false;
+        bool displayLoopHintsSNES=false;
+        //bool displayLoopHintsAmiga=false;
+
+        for (int i=0; i<e->song.systemLen; i++) {
+          /*
+          if (e->song.system[i]==DIV_SYSTEM_NES) {
+            displayLoopHintsNES=true;
+          }*/
+          if (e->song.system[i]==DIV_SYSTEM_SNES) {
+            displayLoopHintsSNES=true;
+          }
+          /*if (e->song.system[i]==DIV_SYSTEM_AMIGA) {
+            displayLoopHintsAmiga=true;
+          }*/
+        }
+
         if (displayLoopStartHints) {
-          dl->AddText(ImVec2(minArea.x,minArea.y),0xffffffff,"Loop start hints.");
+          if (displayLoopHintsSNES) {
+            if (sampleZoom<0.5) {
+              for (int i=0; i<(int)(sampleZoom*avail.x); i++) {
+                if (((i+samplePos)&15)==0) {
+                  ImVec2 p1=ImVec2(rectMin.x+((float)i/sampleZoom),rectMin.y);
+                  ImVec2 p2=p1;
+                  p2.y=rectMax.y;
+
+                  dl->AddLine(p1,p2,ImGui::GetColorU32(uiColors[GUI_COLOR_SAMPLE_NEEDLE]));
+                }
+              }
+            }
+          }
         }
 
         if (displayLoopEndHints) {
-          dl->AddText(ImVec2(minArea.x,minArea.y),0xffffffff,"Loop end hints.");
+          if (displayLoopHintsSNES) {
+            if (sampleZoom<0.5) {
+              for (int i=0; i<(int)(sampleZoom*avail.x); i++) {
+                if (((i+samplePos)&15)==0) {
+                  ImVec2 p1=ImVec2(rectMin.x+((float)i/sampleZoom),rectMin.y);
+                  ImVec2 p2=p1;
+                  p2.y=rectMax.y;
+
+                  dl->AddLine(p1,p2,ImGui::GetColorU32(uiColors[GUI_COLOR_SAMPLE_NEEDLE]));
+                }
+              }
+            }
+          }
         }
 
         if (drawSelection) {