add Configuration section to demo

implot.cpp

@@ -2034,6 +2034,9 @@ void SetColormap(ImPlotColormap colormap, int samples) {
         ResampleColormap(gp.Colormap, gp.ColormapSize, &resampled[0], samples);
         SetColormap(&resampled[0], samples);
     }
+    else {
+        BustItemCache();
+    }
 }
 
 void SetColormap(const ImVec4* colors, int size) {
@@ -2047,6 +2050,7 @@ void SetColormap(const ImVec4* colors, int size) {
         user_colormap.push_back(colors[i]);
     gp.Colormap = &user_colormap[0];
     gp.ColormapSize = size;
+    BustItemCache();
 }
 
 const ImVec4* GetColormap(ImPlotColormap colormap, int* size_out) {
@@ -2475,12 +2479,14 @@ void ShowStyleEditor(ImPlotStyle* ref) {
                 int size;
                 const ImVec4* cmap = GetColormap(i, &size);
                 bool selected = cmap == gp.Colormap;
+                if (selected) {
+                    custom_set = false;
+                }
 
                 if (!selected)
                     ImGui::PushStyleVar(ImGuiStyleVar_Alpha, 0.25f);
                 if (ImGui::Button(GetColormapName(i), ImVec2(75,0))) {
                     SetColormap(i);
-                    BustItemCache();
                     custom_set = false;
                 }
                 if (!selected)
@@ -2506,7 +2512,6 @@ void ShowStyleEditor(ImPlotStyle* ref) {
                 ImGui::PushStyleVar(ImGuiStyleVar_Alpha, 0.25f);
             if (ImGui::Button("Custom", ImVec2(75, 0))) {
                 SetColormap(&custom[0], custom.Size);
-                BustItemCache();
                 custom_set = true;
             }
             if (!custom_set_now)
@@ -2515,7 +2520,6 @@ void ShowStyleEditor(ImPlotStyle* ref) {
                 custom.push_back(ImVec4(0,0,0,1));
                 if (custom_set) {
                     SetColormap(&custom[0], custom.Size);
-                    BustItemCache();
                 }
             }
             ImGui::SameLine();
@@ -2523,7 +2527,6 @@ void ShowStyleEditor(ImPlotStyle* ref) {
                 custom.pop_back();
                 if (custom_set) {
                     SetColormap(&custom[0], custom.Size);
-                    BustItemCache();
                 }
             }
             ImGui::EndGroup();
@@ -2533,7 +2536,6 @@ void ShowStyleEditor(ImPlotStyle* ref) {
                 ImGui::PushID(c);
                 if (ImGui::ColorEdit4("##Col1", &custom[c].x, ImGuiColorEditFlags_NoInputs) && custom_set) {
                     SetColormap(&custom[0], custom.Size);
-                    BustItemCache();
                 }
                 if ((c + 1) % 12 != 0)
                     ImGui::SameLine();

implot.h

@@ -171,7 +171,8 @@ struct ImPlotPoint {
     double  operator[] (size_t idx) const { return (&x)[idx]; }
     double& operator[] (size_t idx)       { return (&x)[idx]; }
 #ifdef IMPLOT_POINT_CLASS_EXTRA
-    IMPLOT_POINT_CLASS_EXTRA     // Define additional constructors and implicit cast operators in imconfig.h to convert back and forth between your math types and ImPlotPoint.
+    IMPLOT_POINT_CLASS_EXTRA     // Define additional constructors and implicit cast operators in imconfig.h
+                                 // to convert back and forth between your math types and ImPlotPoint.
 #endif
 };
 
@@ -418,7 +419,7 @@ bool IsLegendEntryHovered(const char* label_id);
 // Provides access to plot style structure for permanant modifications to colors, sizes, etc.
 ImPlotStyle& GetStyle();
 
-// Style colors from current ImGui style (default)
+// Style colors for current ImGui style (default).
 void StyleColorsAuto(ImPlotStyle* dst = NULL);
 // Style colors for ImGui "Classic".
 void StyleColorsClassic(ImPlotStyle* dst = NULL);
@@ -463,7 +464,7 @@ int GetColormapSize();
 ImVec4 GetColormapColor(int index);
 // Linearly interpolates a color from the current colormap given t between 0 and 1.
 ImVec4 LerpColormap(float t);
-// Returns the next unused colormap color and advances the colormap. Can be used to skip colors if desired. Call between BeginPlot/EndPlot.
+// Returns the next unused colormap color and advances the colormap. Can be used to skip colors if desired.
 ImVec4 NextColormapColor();
 
 const char* GetStyleColorName(ImPlotCol color);
@@ -482,9 +483,9 @@ ImPlotInputMap& GetInputMap();
 
 // Shows ImPlot style selector dropdown menu.
 bool ShowStyleSelector(const char* label);
-// Shows ImPlot style editor block (not a window)
+// Shows ImPlot style editor block (not a window).
 void ShowStyleEditor(ImPlotStyle* ref = NULL);
-// Add basic help/info block (not a window): how to manipulate ImPlot as a end-user
+// Add basic help/info block (not a window): how to manipulate ImPlot as an end-user.
 void ShowUserGuide();
 
 // Push clip rect for rendering to current plot area.

implot_demo.cpp

@@ -139,6 +139,7 @@ struct BenchmarkItem {
 };
 
 void ShowDemoWindow(bool* p_open) {
+    t_float DEMO_TIME = (t_float)ImGui::GetTime();
     static bool show_imgui_metrics       = false;
     static bool show_imgui_style_editor  = false;
     static bool show_implot_style_editor = false;
@@ -195,7 +196,24 @@ void ShowDemoWindow(bool* p_open) {
         ImGui::Text("USER GUIDE:");
         ShowUserGuide();
     }
-    t_float DEMO_TIME = (t_float)ImGui::GetTime();
+    //-------------------------------------------------------------------------
+    if (ImGui::CollapsingHeader("Configuration")) {
+        ImGui::ShowFontSelector("Font");
+        ImGui::ShowStyleSelector("ImGui Style");
+        ImPlot::ShowStyleSelector("ImPlot Style");
+
+        static const char* map = ImPlot::GetColormapName(ImPlotColormap_Default);
+        if (ImGui::BeginCombo("ImPlot Colormap", map)) {
+            for (int i = 0; i < ImPlotColormap_COUNT; ++i) {
+                const char* name = GetColormapName(i);
+                if (ImGui::Selectable(name, map == name)) {
+                    map = name;
+                    ImPlot::SetColormap(i);
+                }
+            }
+            ImGui::EndCombo();
+        }
+    }
     //-------------------------------------------------------------------------
     if (ImGui::CollapsingHeader("Line Plots")) {
         static t_float xs1[1001], ys1[1001];