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feat(ncurses): event-driven scrolling & font styling

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- Update `renderers/ncurses/clay_renderer_ncurses.c`:
  - Export `CLAY_NCURSES_KEY_SCROLL_UP` and `CLAY_NCURSES_KEY_SCROLL_DOWN` key codes.
  - Modify `Clay_Ncurses_ProcessInput` to map mouse wheel events (`BUTTON4`, `BUTTON5`) to these key codes.
  - Update `Clay_Ncurses_OnClick` to trigger on `CLAY_POINTER_DATA_PRESSED_THIS_FRAME` for immediate feedback.

- Update `examples/ncurses-example/main.c`:
  - Handle `CLAY_NCURSES_KEY_SCROLL_UP/DOWN` in `App_ProcessInput` to drive `_appState.scrollDelta`.
  - Simplify `HandleHelpToggleClick` to toggle visibility directly.
  - Apply bold and underline font styles to sidebar items.
  - Convert input processing to a `while` loop to process all pending events per frame.
This commit is contained in:
Seintian 2025-12-29 20:33:20 +01:00
parent c700104760
commit e89f3d15e9
3 changed files with 68 additions and 19 deletions
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17
renderers/ncurses/README.md
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@ -75,10 +75,21 @@ while (!shouldQuit) {
The renderer provides helper functions to easy integration of mouse interactions:
- **`Clay_Ncurses_ProcessInput(WINDOW *window)`**: Call this instead of `getch` or `wgetch`. It handles mouse events, updates the internal Clay pointer state, and returns the key code for your application to handle (e.g., keyboard shortcuts).
- **`Clay_Ncurses_OnClick(void (*userData)(...), void *userData)`**: A helper to attach a click listener to the current element. It uses `Clay_OnHover` internally. Your callback function should check if `pointerInfo.state == CLAY_POINTER_DATA_RELEASED_THIS_FRAME` to detect a valid click.
- **`Clay_Ncurses_ProcessInput(WINDOW *window)`**: Call this instead of `getch` or `wgetch`. It handles mouse events (including scroll wheel mapping to `Clay_UpdateScrollContainers`), updates the internal Clay pointer state, and returns the key code for your application to handle.
- **`Clay_Ncurses_OnClick(void (*userData)(...), void *userData)`**: A helper to attach a click listener to the current element. It uses `Clay_OnHover` internally. Your callback function should check if `pointerInfo.state == CLAY_POINTER_DATA_PRESSED_THIS_FRAME` for instant click feedback.
### 5. Cleanup
### 5. Font Styling
You can apply **Bold** and **Underline** styles using the `fontId` configuration in `CLAY_TEXT`.
Use the provided macros:
```c
CLAY_TEXT(CLAY_STRING("Bold Text"), CLAY_TEXT_CONFIG({ .fontId = CLAY_NCURSES_FONT_BOLD }));
CLAY_TEXT(CLAY_STRING("Underline"), CLAY_TEXT_CONFIG({ .fontId = CLAY_NCURSES_FONT_UNDERLINE }));
CLAY_TEXT(CLAY_STRING("Both"), CLAY_TEXT_CONFIG({ .fontId = CLAY_NCURSES_FONT_BOLD | CLAY_NCURSES_FONT_UNDERLINE }));
```
### 6. Cleanup
Restore the terminal to its normal state before exiting.