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DOCS: Refine and add documentation for libwidget.c

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boreddevnl
2026-04-03 11:52:06 +02:00
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docs/architecture/window_manager.md
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BoredOS features a fully custom, graphical Window Manager built directly into the kernel, residing in the `src/wm/` directory. It is responsible for compositing the screen, handling window logic, rendering text, and dispatching UI events.
## 🖼️ Framebuffer and Rendering
## Framebuffer and Rendering
1. **Limine Framebuffer**: During boot, the Limine bootloader requests a graphical framebuffer from the hardware (e.g., GOP in UEFI environments) and passes a pointer to this linear memory buffer to the kernel.
2. **Double Buffering**: To prevent screen tearing, the WM does not draw directly to the screen. It allocates a "back buffer" in kernel memory equal to the size of the screen. All drawing operations (lines, rectangles, windows) happen on this back buffer.
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- **Window Structures**: Each window object tracks its dimensions (`x`, `y`, `width`, `height`), title, background color, and an internal buffer if it's acting as a canvas for userland apps.
- **Decorations**: The kernel handles drawing window borders, title bars, and close buttons automatically unless a borderless style is specified.
## 🖱️ Input Handling and Events
## Input Handling and Events
The WM acts as the central hub for input routing.