Merge pull request #55 from cropinghigh/master

Stepped sliders+bandwidth

core/src/gui/widgets/stepped_slider.cpp

@@ -0,0 +1,23 @@
+#include <gui/widgets/stepped_slider.h>
+#include <imgui.h>
+#include <imgui_internal.h>
+
+namespace ImGui {
+    bool SliderFloatWithSteps(const char* label, float* v, float v_min, float v_max, float v_step, const char* display_format) {
+        if (!display_format) {
+            display_format = "%.3f";
+        }
+
+        char text_buf[64] = {};
+        ImFormatString(text_buf, IM_ARRAYSIZE(text_buf), display_format, *v);
+
+        // Map from [v_min,v_max] to [0,N]
+        const int countValues = int((v_max-v_min)/v_step);
+        int v_i = int((*v - v_min)/v_step);
+        const bool value_changed = ImGui::SliderInt(label, &v_i, 0, countValues, text_buf);
+
+        // Remap from [0,N] to [v_min,v_max]
+        *v = v_min + float(v_i) * v_step;
+        return value_changed;
+    }
+}

core/src/gui/widgets/stepped_slider.h

@@ -0,0 +1,5 @@
+#pragma once
+
+namespace ImGui {
+    bool SliderFloatWithSteps(const char* label, float* v, float v_min, float v_max, float v_step, const char* display_format = "%.3f");
+}