Formalize scene viewport chrome and presentation helpers

editor/src/Viewport/SceneViewportChrome.h

@@ -0,0 +1,88 @@
+#pragma once
+
+#include "Core/IUndoManager.h"
+#include "SceneViewportMoveGizmo.h"
+#include "SceneViewportNavigation.h"
+#include "SceneViewportRotateGizmo.h"
+#include "SceneViewportScaleGizmo.h"
+#include "panels/ViewportPanelContent.h"
+
+namespace XCEngine {
+namespace Editor {
+
+struct SceneViewportToolOverlayResult {
+    bool hovered = false;
+    bool clicked = false;
+    SceneViewportToolMode clickedTool = SceneViewportToolMode::Move;
+};
+
+struct SceneViewportToolCommand {
+    SceneViewportToolMode targetTool = SceneViewportToolMode::Move;
+    bool triggered = false;
+    bool cancelMoveGizmo = false;
+    bool cancelRotateGizmo = false;
+    bool cancelScaleGizmo = false;
+
+    bool HasAction() const {
+        return triggered;
+    }
+};
+
+void RenderSceneViewportTopBar(
+    SceneViewportPivotMode& pivotMode,
+    SceneViewportTransformSpaceMode& transformSpaceMode);
+
+SceneViewportToolOverlayResult RenderSceneViewportToolOverlay(
+    const ViewportPanelContentResult& content,
+    SceneViewportToolMode activeTool);
+
+inline SceneViewportToolCommand BuildSceneViewportToolCommand(
+    const SceneViewportToolOverlayResult& overlayResult,
+    const SceneViewportToolShortcutAction& shortcutAction) {
+    SceneViewportToolCommand command = {};
+
+    if (overlayResult.clicked) {
+        command.targetTool = overlayResult.clickedTool;
+        command.triggered = true;
+        command.cancelMoveGizmo = true;
+        command.cancelRotateGizmo = true;
+        command.cancelScaleGizmo = true;
+    }
+
+    if (shortcutAction.HasAction()) {
+        command.targetTool = shortcutAction.targetTool;
+        command.triggered = true;
+        command.cancelMoveGizmo = command.cancelMoveGizmo || shortcutAction.cancelMoveGizmo;
+        command.cancelRotateGizmo = command.cancelRotateGizmo || shortcutAction.cancelRotateGizmo;
+        command.cancelScaleGizmo = command.cancelScaleGizmo || shortcutAction.cancelScaleGizmo;
+    }
+
+    return command;
+}
+
+inline void ExecuteSceneViewportToolCommand(
+    const SceneViewportToolCommand& command,
+    IUndoManager& undoManager,
+    SceneViewportMoveGizmo& moveGizmo,
+    SceneViewportRotateGizmo& rotateGizmo,
+    SceneViewportScaleGizmo& scaleGizmo,
+    SceneViewportToolMode& toolMode) {
+    if (!command.HasAction()) {
+        return;
+    }
+
+    if (command.cancelMoveGizmo && moveGizmo.IsActive()) {
+        moveGizmo.CancelDrag(&undoManager);
+    }
+    if (command.cancelRotateGizmo && rotateGizmo.IsActive()) {
+        rotateGizmo.CancelDrag(&undoManager);
+    }
+    if (command.cancelScaleGizmo && scaleGizmo.IsActive()) {
+        scaleGizmo.CancelDrag(&undoManager);
+    }
+
+    toolMode = command.targetTool;
+}
+
+} // namespace Editor
+} // namespace XCEngine