Init Repo

2026-06-03 09:00:11 +08:00
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+## Why
+
+All ImGui windows are fixed-position, fixed-size, and non-dockable, forcing users into a rigid layout that cannot adapt to different screen sizes, workflows, or preferences. Enabling ImGui's built-in docking system allows users to freely arrange, resize, tab, and float panels to suit their workflow — a critical UX feature for any editor application.
+
+## What Changes
+
+- Enable ImGui docking by defining `IMGUI_HAS_DOCK` at compile time via CMake
+- Set `ImGuiConfigFlags_DockingEnable` in the ImGui IO config flags
+- Create a full-window dockspace in the main render loop
+- Replace hardcoded `SetNextWindowPos`/`SetNextWindowSize` calls with dockable window creation
+- Remove manual positioning logic for all panels (Scene Hierarchy, Layer Panel, Viewport, Property Panel, Stage Info)
+- Preserve window visibility toggles (Stage Info, Demo Window) via the View menu
+- Ensure dock layout persists across sessions via `imgui.ini`
+
+## Capabilities
+
+### New Capabilities
+
+- `imgui-docking`: Main application dock space with draggable, resizable, and tabbable panels. Includes compile-time docking enablement, runtime dockspace creation, and panel migration from fixed-position to dock-based layout.
+
+### Modified Capabilities
+
+<!-- No existing specs to modify -->
+
+## Impact
+
+- **CMake**: `FindImgui.cmake` — add `IMGUI_HAS_DOCK` compile definition
+- **imconfig.h**: May need to ensure docking macros are uncommented (or rely on CMake define)
+- **ImGuiContext.cpp**: Add `ImGuiConfigFlags_DockingEnable` to IO config flags in `Initialize()`
+- **Application.cpp**: Add dockspace creation at the start of `RenderUI()`, remove all `SetNextWindowPos`/`SetNextWindowSize` calls from panel rendering
+- **All panel windows**: No API changes — windows remain compatible with docking as-is