From 12281ce6f46c69ab23522e4ec11fe11210615592 Mon Sep 17 00:00:00 2001
From: lachrymaLF <lachrymalfutura@gmail.com>
Date: Mon, 24 Jun 2024 12:00:30 -0400
Subject: [PATCH] sane graph drags

---
 Keishiki/UI.cpp | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/Keishiki/UI.cpp b/Keishiki/UI.cpp
index 511a23c..7c12d98 100644
--- a/Keishiki/UI.cpp
+++ b/Keishiki/UI.cpp
@@ -1297,14 +1297,18 @@ namespace K::UI {
                 ImPlot::PushStyleColor(ImPlotCol_PlotBg, 0);
                 ImPlot::PushStyleColor(ImPlotCol_PlotBorder, 0);
                 if (ImPlot::BeginPlot("uniform", {view_width, ImGui::GetContentRegionAvail().y}, ImPlotFlags_CanvasOnly | ImPlotFlags_NoFrame | ImPlotFlags_NoInputs)) {
+                    static bool started_dragging = false, dragging = false;
+
                     ImPlot::SetupAxis(ImAxis_X1, "time", ImPlotAxisFlags_NoHighlight | ImPlotAxisFlags_NoLabel | ImPlotAxisFlags_NoGridLines);
-                    ImPlot::SetupAxis(ImAxis_Y1, "val", ImPlotAxisFlags_NoHighlight | ImPlotAxisFlags_NoLabel | ImPlotAxisFlags_Opposite | ImPlotAxisFlags_NoTickLabels | ImPlotAxisFlags_NoTickMarks | ImPlotAxisFlags_AutoFit);
+                    auto flags = ImPlotAxisFlags_NoHighlight | ImPlotAxisFlags_NoLabel | ImPlotAxisFlags_Opposite | ImPlotAxisFlags_NoTickLabels | ImPlotAxisFlags_NoTickMarks;
+                    if (!dragging)
+                        flags |= ImPlotAxisFlags_AutoFit;
+                    ImPlot::SetupAxis(ImAxis_Y1, "val",  flags);
 
                     const f32 begin = view_left * static_cast<f32>(s.frame_max + 1), end = view_right * static_cast<f32>(s.frame_max + 1);
                     ImPlot::SetupAxisLimits(ImAxis_X1, begin, end, ImGuiCond_Always);
                     ImPlot::SetupFinish();
 
-                    static bool started_dragging = false, dragging = false;
                     if (started_dragging) {
                         dragging = true;
                     }
@@ -1693,25 +1697,29 @@ namespace K::UI {
                     ImGui::SetCursorPos(ImVec2{w * .8f, w - 15.0f,});
                     ImGui::Text("%.2f", y_min);
 
+                    static f32 y_range_old{};
+
                     ImVec2 size = {15.0f, 15.0f};
                     ImGui::SetCursorScreenPos(tp2 - size / 2.0f);
                     ImVec2 off = io.MousePos - io.MouseClickedPos[0];
                     ImGui::Button("##P2", size);
                     if (ImGui::IsItemClicked()) {
+                        y_range_old = y_range;
                         p2_old = p2;
                     }
                     if (ImGui::IsItemActive()) {
-                        p2 = p2_old + ImVec2{off.x / w, off.y / -w * y_range};
+                        p2 = p2_old + ImVec2{off.x / w, off.y / -w * y_range_old};
                         p2.x = std::clamp(p2.x, 0.0f, 1.0f);
                     }
 
                     ImGui::SetCursorScreenPos(tp3 - size / 2.0f);
                     ImGui::Button("##P3", size);
                     if (ImGui::IsItemClicked()) {
+                        y_range_old = y_range;
                         p3_old = p3;
                     }
                     if (ImGui::IsItemActive()) {
-                        p3 = p3_old + ImVec2{off.x / w, off.y / -w * y_range};
+                        p3 = p3_old + ImVec2{off.x / w, off.y / -w * y_range_old};
                         p3.x = std::clamp(p3.x, 0.0f, 1.0f);
                     }
                 }