From 6dc4f166896269279931661061b1731d3f1332aa Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Sat, 1 Mar 2025 06:10:59 -0500
Subject: [PATCH] GUI: add an audio load chart

---
 src/gui/gui.cpp   |  3 +++
 src/gui/gui.h     |  3 +++
 src/gui/stats.cpp | 14 ++++++++++++--
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 60c245b86..c85504773 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -8569,6 +8569,7 @@ FurnaceGUI::FurnaceGUI():
   lastPatternWidth(0.0f),
   longThreshold(0.48f),
   buttonLongThreshold(0.20f),
+  lastAudioLoadsPos(0),
   latchNote(-1),
   latchIns(-2),
   latchVol(-1),
@@ -8937,6 +8938,8 @@ FurnaceGUI::FurnaceGUI():
   memset(keyHit,0,sizeof(float)*DIV_MAX_CHANS);
   memset(keyHit1,0,sizeof(float)*DIV_MAX_CHANS);
 
+  memset(lastAudioLoads,0,sizeof(float)*120);
+
   memset(pianoKeyHit,0,sizeof(float)*180);
   memset(pianoKeyPressed,0,sizeof(bool)*180);
 
diff --git a/src/gui/gui.h b/src/gui/gui.h
index c82ebc799..8d252d3e6 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -2379,6 +2379,9 @@ class FurnaceGUI {
   String nextDesc;
   String nextDescName;
 
+  float lastAudioLoads[120];
+  int lastAudioLoadsPos;
+
   OperationMask opMaskDelete, opMaskPullDelete, opMaskInsert, opMaskPaste, opMaskTransposeNote, opMaskTransposeValue;
   OperationMask opMaskInterpolate, opMaskFade, opMaskInvertVal, opMaskScale;
   OperationMask opMaskRandomize, opMaskFlip, opMaskCollapseExpand;
diff --git a/src/gui/stats.cpp b/src/gui/stats.cpp
index 0929cfd74..f9f27fa6d 100644
--- a/src/gui/stats.cpp
+++ b/src/gui/stats.cpp
@@ -31,11 +31,21 @@ void FurnaceGUI::drawStats() {
   if (ImGui::Begin("Statistics",&statsOpen,globalWinFlags,_("Statistics"))) {
     size_t lastProcTime=e->processTime;
     double maxGot=1000000000.0*(double)e->getAudioDescGot().bufsize/(double)e->getAudioDescGot().rate;
-    String procStr=fmt::sprintf("%.1f%%",100.0*((double)lastProcTime/(double)maxGot));
     ImGui::AlignTextToFramePadding();
     ImGui::Text(_("Audio load"));
     ImGui::SameLine();
-    ImGui::ProgressBar((double)lastProcTime/maxGot,ImVec2(-FLT_MIN,0),procStr.c_str());
+    ImGui::ProgressBar((double)lastProcTime/maxGot,ImVec2(ImGui::GetContentRegionAvail().x-ImGui::CalcTextSize("100.0%").x,0),"");
+    ImGui::SameLine();
+    ImGui::Text("%.1f%%",100.0*((double)lastProcTime/(double)maxGot));
+    if (ImGui::GetContentRegionAvail().y>8.0f*dpiScale) {
+      // draw a chart
+      lastAudioLoads[lastAudioLoadsPos]=(double)lastProcTime/maxGot;
+      if (++lastAudioLoadsPos>=120) lastAudioLoadsPos=0;
+
+      ImGui::PushStyleColor(ImGuiCol_FrameBg,ImVec4(0,0,0,0));
+      ImGui::PlotLines("##ALChart",lastAudioLoads,120,lastAudioLoadsPos,NULL,0.0f,1.0f,ImGui::GetContentRegionAvail());
+      ImGui::PopStyleColor();
+    }
   }
   if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) curWindow=GUI_WINDOW_STATS;
   ImGui::End();