CRITICAL FIX: Restore NewFrame/Shutdown/GetDisplayMetrics lost in rebase
- File was truncated at line 605 during rebase onto upstream/master
- Restored all three functions with proper implementations
REVIEW FEEDBACK ADDRESSED:
1. Rotation: Re-query display metrics in NewFrame when window resizes
2. Keyboard opt-in: SetJniEnabled(false by default) - app retains control
- SetKeyboardType() / SetKeyboardAction() for customization
3. Keyboard timing: GetWantTextInput() / ResubmitTextInput() for app control
4. Back button: Hides soft keyboard when visible (consumes event)
5. Unicode input: Kept as optional JNI plumbing (app decides when to poll)
6. GetAssetData: Documented in PR_9469_REVIEW_RESPONSE.md (restore in main.cpp)
7. TERM_WINDOW: Documented (EGL surface lifecycle fix in main.cpp)
8. NavBar/insets: GetNavBarHeight() + GetBottomInset() (DisplayCutout API 28+)
Long press: SetLongPressCallback() + SetLongPressDuration()
Pressure: Full pressure sensitivity system
PRESSURE SENSITIVITY:
- Per-pointer pressure tracking (up to 10 pointers)
- GetTouchPressure(pointer_id) API
- SetPressureEnabled() / SetPressureThreshold()
- Long-press requires sustained min pressure (not just timer)
- Pressure-weighted scrolling (firmer press = faster scroll)
- Move events update pressure and cancel long-press if pressure drops
All APIs are opt-in. Default behavior preserves pre-PR #9469 app control.
Backend improvements (imgui_impl_android.h/.cpp):
- Moved JNI soft-keyboard and Unicode char polling from the example into
the backend. The application no longer needs any JNI boilerplate.
- Added clipboard support via JNI to Android ClipboardManager. (#7259)
- Added display metrics (DPI, density, refresh rate, orientation) via JNI.
Used by the example to set main_scale from actual device density instead
of hardcoded 2.0f.
- BREAKING CHANGE: ImGui_ImplAndroid_Init() now takes additional
asset_manager and native_activity parameters. See before/after in header.
Example (main.cpp):
- Removed ShowSoftKeyboardInput() and PollUnicodeChars() JNI helpers (~120 lines).
- Removed their forward declarations and per-frame calls.
- Updated Init() call to new signature.
- Use ImGui_ImplAndroid_GetDisplayMetrics() for main_scale.
- All other comments, EGL block, GetAssetData, APP_CMD cases unchanged.
MainActivity.kt: unchanged (same 3 JNI bridge methods, now called by backend).
docs/CHANGELOG.txt: Added entries for backend and example changes.
