Unify editor divider and splitter chrome

editor/src/UI/DividerChrome.h

@@ -0,0 +1,50 @@
+#pragma once
+
+#include "StyleTokens.h"
+
+#include <imgui.h>
+
+namespace XCEngine {
+namespace Editor {
+namespace UI {
+
+inline void DrawHorizontalDivider(
+    ImDrawList* drawList,
+    float minX,
+    float maxX,
+    float y,
+    ImU32 color = PanelDividerColor(),
+    float thickness = PanelDividerThickness()) {
+    if (!drawList || maxX <= minX) {
+        return;
+    }
+
+    drawList->AddLine(ImVec2(minX, y), ImVec2(maxX, y), color, thickness);
+}
+
+inline void DrawVerticalDivider(
+    ImDrawList* drawList,
+    float x,
+    float minY,
+    float maxY,
+    ImU32 color = PanelDividerColor(),
+    float thickness = PanelDividerThickness()) {
+    if (!drawList || maxY <= minY) {
+        return;
+    }
+
+    drawList->AddLine(ImVec2(x, minY), ImVec2(x, maxY), color, thickness);
+}
+
+inline void DrawCurrentWindowBottomDivider(
+    ImU32 color = PanelDividerColor(),
+    float thickness = PanelDividerThickness()) {
+    ImDrawList* drawList = ImGui::GetWindowDrawList();
+    const ImVec2 min = ImGui::GetWindowPos();
+    const ImVec2 max = ImVec2(min.x + ImGui::GetWindowSize().x, min.y + ImGui::GetWindowSize().y);
+    DrawHorizontalDivider(drawList, min.x, max.x, max.y - 1.0f, color, thickness);
+}
+
+} // namespace UI
+} // namespace Editor
+} // namespace XCEngine