From 30b1a4d383b86dea0b6f3ca90258e2d3f000d753 Mon Sep 17 00:00:00 2001
From: goat <16760685+goaaats@users.noreply.github.com>
Date: Sat, 16 Jul 2022 00:18:34 +0200
Subject: [PATCH] feat: ImGuiHelpers.Center helpers, toggle switch component

---
 .../ImGuiComponents.ToggleSwitch.cs           | 72 +++++++++++++++++++
 Dalamud/Interface/ImGuiHelpers.cs             | 30 ++++++++
 2 files changed, 102 insertions(+)
 create mode 100644 Dalamud/Interface/Components/ImGuiComponents.ToggleSwitch.cs

diff --git a/Dalamud/Interface/Components/ImGuiComponents.ToggleSwitch.cs b/Dalamud/Interface/Components/ImGuiComponents.ToggleSwitch.cs
new file mode 100644
index 000000000..83c238c06
--- /dev/null
+++ b/Dalamud/Interface/Components/ImGuiComponents.ToggleSwitch.cs
@@ -0,0 +1,72 @@
+using System.Numerics;
+
+using ImGuiNET;
+
+namespace Dalamud.Interface.Components
+{
+    /// <summary>
+    /// Component for toggle buttons.
+    /// </summary>
+    public static partial class ImGuiComponents
+    {
+        /// <summary>
+        /// Draw a toggle button.
+        /// </summary>
+        /// <param name="id">The id of the button.</param>
+        /// <param name="v">The state of the switch.</param>
+        /// <returns>If the button has been interacted with this frame.</returns>
+        public static bool ToggleButton(string id, ref bool v)
+        {
+            var colors = ImGui.GetStyle().Colors;
+            var p = ImGui.GetCursorScreenPos();
+            var drawList = ImGui.GetWindowDrawList();
+
+            var height = ImGui.GetFrameHeight();
+            var width = height * 1.55f;
+            var radius = height * 0.50f;
+
+            // TODO: animate
+
+            var changed = false;
+            ImGui.InvisibleButton(id, new Vector2(width, height));
+            if (ImGui.IsItemClicked())
+            {
+                v = !v;
+                changed = true;
+            }
+
+            if (ImGui.IsItemHovered())
+                drawList.AddRectFilled(p, new Vector2(p.X + width, p.Y + height), ImGui.GetColorU32(v ? colors[(int)ImGuiCol.ButtonActive] : new Vector4(0.78f, 0.78f, 0.78f, 1.0f)), height * 0.5f);
+            else
+                drawList.AddRectFilled(p, new Vector2(p.X + width, p.Y + height), ImGui.GetColorU32(v ? colors[(int)ImGuiCol.Button] : new Vector4(0.55f, 0.55f, 0.55f, 1.0f)), height * 0.50f);
+            drawList.AddCircleFilled(new Vector2(p.X + radius + ((v ? 1 : 0) * (width - (radius * 2.0f))), p.Y + radius), radius - 1.5f, ImGui.ColorConvertFloat4ToU32(new Vector4(255, 255, 255, 255)));
+
+            return changed;
+        }
+
+        /// <summary>
+        /// Draw a disabled toggle button.
+        /// </summary>
+        /// <param name="id">The id of the button.</param>
+        /// <param name="v">The state of the switch.</param>
+        public static void DisabledToggleButton(string id, bool v)
+        {
+            var colors = ImGui.GetStyle().Colors;
+            var p = ImGui.GetCursorScreenPos();
+            var drawList = ImGui.GetWindowDrawList();
+
+            var height = ImGui.GetFrameHeight();
+            var width = height * 1.55f;
+            var radius = height * 0.50f;
+
+            // TODO: animate
+            // TODO: dim colors
+            ImGui.InvisibleButton(id, new Vector2(width, height));
+
+            var dimFactor = 0.5f;
+
+            drawList.AddRectFilled(p, new Vector2(p.X + width, p.Y + height), ImGui.GetColorU32(v ? colors[(int)ImGuiCol.Button] * dimFactor : new Vector4(0.55f, 0.55f, 0.55f, 1.0f) * dimFactor), height * 0.50f);
+            drawList.AddCircleFilled(new Vector2(p.X + radius + ((v ? 1 : 0) * (width - (radius * 2.0f))), p.Y + radius), radius - 1.5f, ImGui.ColorConvertFloat4ToU32(new Vector4(255, 255, 255, 255) * dimFactor));
+        }
+    }
+}
diff --git a/Dalamud/Interface/ImGuiHelpers.cs b/Dalamud/Interface/ImGuiHelpers.cs
index 67c0c687d..8aaf860dc 100644
--- a/Dalamud/Interface/ImGuiHelpers.cs
+++ b/Dalamud/Interface/ImGuiHelpers.cs
@@ -237,6 +237,36 @@ namespace Dalamud.Interface
             return (VirtualKey)ImGui_Input_Impl_Direct.ImGuiKeyToVirtualKey(key);
         }
 
+        /// <summary>
+        /// Show centered text.
+        /// </summary>
+        /// <param name="text">Text to show.</param>
+        public static void CenteredText(string text)
+        {
+            CenterCursorForText(text);
+            ImGui.TextUnformatted(text);
+        }
+
+        /// <summary>
+        /// Center the ImGui cursor for a certain text.
+        /// </summary>
+        /// <param name="text">The text to center for.</param>
+        public static void CenterCursorForText(string text)
+        {
+            var textWidth = ImGui.CalcTextSize(text).X;
+            CenterCursorFor((int)textWidth);
+        }
+
+        /// <summary>
+        /// Center the ImGui cursor for an item with a certain width.
+        /// </summary>
+        /// <param name="itemWidth">The width to center for.</param>
+        public static void CenterCursorFor(int itemWidth)
+        {
+            var window = (int)ImGui.GetWindowWidth();
+            ImGui.SetCursorPosX((window / 2) - (itemWidth / 2));
+        }
+
         /// <summary>
         /// Get data needed for each new frame.
         /// </summary>