Build XCEditor viewport input bridge foundation

new_editor/include/XCEditor/Core/UIEditorViewportInputBridge.h

@@ -0,0 +1,67 @@
+#pragma once
+
+#include <XCEngine/UI/Types.h>
+
+#include <cstdint>
+#include <unordered_set>
+#include <vector>
+
+namespace XCEngine::UI::Editor {
+
+struct UIEditorViewportInputBridgeConfig {
+    bool focusOnPointerDownInside = true;
+    bool clearFocusOnPointerDownOutside = true;
+    bool capturePointerOnPointerDownInside = true;
+};
+
+struct UIEditorViewportInputBridgeState {
+    bool hovered = false;
+    bool focused = false;
+    bool captured = false;
+    ::XCEngine::UI::UIPointerButton captureButton = ::XCEngine::UI::UIPointerButton::None;
+    ::XCEngine::UI::UIPoint lastScreenPointerPosition = {};
+    ::XCEngine::UI::UIPoint lastLocalPointerPosition = {};
+    bool hasPointerPosition = false;
+    ::XCEngine::UI::UIInputModifiers modifiers = {};
+    std::unordered_set<std::int32_t> pressedKeys = {};
+    std::uint8_t pointerButtonsDownMask = 0;
+};
+
+struct UIEditorViewportInputBridgeFrame {
+    bool hovered = false;
+    bool focused = false;
+    bool captured = false;
+    bool pointerInside = false;
+    bool pointerMoved = false;
+    bool pointerPressedInside = false;
+    bool pointerReleasedInside = false;
+    bool focusGained = false;
+    bool focusLost = false;
+    bool captureStarted = false;
+    bool captureEnded = false;
+    ::XCEngine::UI::UIPointerButton changedPointerButton = ::XCEngine::UI::UIPointerButton::None;
+    ::XCEngine::UI::UIPoint screenPointerPosition = {};
+    ::XCEngine::UI::UIPoint localPointerPosition = {};
+    ::XCEngine::UI::UIPoint pointerDelta = {};
+    float wheelDelta = 0.0f;
+    ::XCEngine::UI::UIInputModifiers modifiers = {};
+    std::vector<std::int32_t> pressedKeyCodes = {};
+    std::vector<std::int32_t> releasedKeyCodes = {};
+    std::vector<std::uint32_t> characters = {};
+};
+
+bool IsUIEditorViewportInputBridgeKeyDown(
+    const UIEditorViewportInputBridgeState& state,
+    std::int32_t keyCode);
+
+bool IsUIEditorViewportInputBridgePointerButtonDown(
+    const UIEditorViewportInputBridgeState& state,
+    ::XCEngine::UI::UIPointerButton button);
+
+UIEditorViewportInputBridgeFrame UpdateUIEditorViewportInputBridge(
+    UIEditorViewportInputBridgeState& state,
+    const ::XCEngine::UI::UIRect& inputRect,
+    const std::vector<::XCEngine::UI::UIInputEvent>& events,
+    const UIEditorViewportInputBridgeConfig& config = {});
+
+} // namespace XCEngine::UI::Editor