Add editor list, scroll, and property grid widgets

new_editor/include/XCEditor/Widgets/UIEditorScrollView.h

@@ -0,0 +1,96 @@
+#pragma once
+
+#include <XCEngine/UI/DrawData.h>
+#include <XCEngine/UI/Types.h>
+
+#include <cstdint>
+
+namespace XCEngine::UI::Editor::Widgets {
+
+enum class UIEditorScrollViewHitTargetKind : std::uint8_t {
+    None = 0,
+    Content,
+    ScrollbarTrack,
+    ScrollbarThumb
+};
+
+struct UIEditorScrollViewState {
+    bool focused = false;
+    bool hovered = false;
+    bool scrollbarHovered = false;
+    bool draggingScrollbarThumb = false;
+};
+
+struct UIEditorScrollViewMetrics {
+    float scrollbarWidth = 10.0f;
+    float scrollbarInset = 4.0f;
+    float minThumbHeight = 28.0f;
+    float cornerRounding = 6.0f;
+    float borderThickness = 1.0f;
+    float focusedBorderThickness = 2.0f;
+    float wheelStep = 48.0f;
+};
+
+struct UIEditorScrollViewPalette {
+    ::XCEngine::UI::UIColor surfaceColor =
+        ::XCEngine::UI::UIColor(0.14f, 0.14f, 0.14f, 1.0f);
+    ::XCEngine::UI::UIColor borderColor =
+        ::XCEngine::UI::UIColor(0.29f, 0.29f, 0.29f, 1.0f);
+    ::XCEngine::UI::UIColor focusedBorderColor =
+        ::XCEngine::UI::UIColor(0.84f, 0.84f, 0.84f, 1.0f);
+    ::XCEngine::UI::UIColor scrollbarTrackColor =
+        ::XCEngine::UI::UIColor(0.18f, 0.18f, 0.18f, 1.0f);
+    ::XCEngine::UI::UIColor scrollbarThumbColor =
+        ::XCEngine::UI::UIColor(0.31f, 0.31f, 0.31f, 1.0f);
+    ::XCEngine::UI::UIColor scrollbarThumbHoverColor =
+        ::XCEngine::UI::UIColor(0.38f, 0.38f, 0.38f, 1.0f);
+    ::XCEngine::UI::UIColor scrollbarThumbActiveColor =
+        ::XCEngine::UI::UIColor(0.46f, 0.46f, 0.46f, 1.0f);
+};
+
+struct UIEditorScrollViewLayout {
+    ::XCEngine::UI::UIRect bounds = {};
+    ::XCEngine::UI::UIRect contentRect = {};
+    ::XCEngine::UI::UIRect scrollbarTrackRect = {};
+    ::XCEngine::UI::UIRect scrollbarThumbRect = {};
+    float contentHeight = 0.0f;
+    float verticalOffset = 0.0f;
+    float maxOffset = 0.0f;
+    bool hasScrollbar = false;
+};
+
+struct UIEditorScrollViewHitTarget {
+    UIEditorScrollViewHitTargetKind kind = UIEditorScrollViewHitTargetKind::None;
+};
+
+bool IsUIEditorScrollViewPointInside(
+    const ::XCEngine::UI::UIRect& rect,
+    const ::XCEngine::UI::UIPoint& point);
+
+float ClampUIEditorScrollViewOffset(
+    const ::XCEngine::UI::UIRect& bounds,
+    float contentHeight,
+    float verticalOffset,
+    const UIEditorScrollViewMetrics& metrics = {});
+
+UIEditorScrollViewLayout BuildUIEditorScrollViewLayout(
+    const ::XCEngine::UI::UIRect& bounds,
+    float contentHeight,
+    float verticalOffset,
+    const UIEditorScrollViewMetrics& metrics = {});
+
+::XCEngine::UI::UIPoint ResolveUIEditorScrollViewContentOrigin(
+    const UIEditorScrollViewLayout& layout);
+
+UIEditorScrollViewHitTarget HitTestUIEditorScrollView(
+    const UIEditorScrollViewLayout& layout,
+    const ::XCEngine::UI::UIPoint& point);
+
+void AppendUIEditorScrollViewBackground(
+    ::XCEngine::UI::UIDrawList& drawList,
+    const UIEditorScrollViewLayout& layout,
+    const UIEditorScrollViewState& state,
+    const UIEditorScrollViewPalette& palette = {},
+    const UIEditorScrollViewMetrics& metrics = {});
+
+} // namespace XCEngine::UI::Editor::Widgets