Package limn.backend

package limn.backend

The service-provider interface a native platform implements: Backend runs the event loop and creates NativeWindows. Beside it sit the contracts a platform must supply: the GpuRenderer widgets draw through, WindowInput, Clipboard, Cursors, FileDialogs and Crashes reporting. Come here to write a backend, or to see exactly what one owes the toolkit; an application constructs one at startup and otherwise programs against the modules above, which never name a windowing library.

Related Packages

Package	Description
limn.backend.lwjgl	The shipped backend: GLFW windows and input, an OpenGL 3.3 core renderer that batches the 2D canvas and hosts the 3D provider, OpenAL audio, and stb for font rasterization and image decoding.

Class	Description
Backend	Service-provider interface for a native platform backend (windows, input, GPU rendering, clipboard).
Backend.SceneModalHandle	Handle to an in-scene modal (see Backend.pushSceneModal(limn.backend.NativeWindow, boolean)); Backend.SceneModalHandle.release() it on close.
Clipboard	System clipboard (UTF-8 text).
Crashes	Crash containment registry: one process-wide CrashHandler (default: log and continue) that the toolkit and backend notify whenever application code throws inside the event loop.
Crashes.ShutdownRequested	Unwinds the event loop when a CrashHandler returned false; containment sites let it pass through instead of re-dispatching, so the handler sees each crash once.
CrashHandler	Application hook for crashes the toolkit caught in the event loop.
CrashPhase	Where application code was executing when a contained crash was caught.
Cursor	A standard mouse-cursor shape a widget can request while hovered: the OS's native pointer, so it looks and feels exactly like every other application.
Display	A monitor/screen, normalized so every part of the toolkit reads display information the same way instead of each class poking at the platform: its identity (Display.id()/Display.name()), the mode currently set (Display.currentResolution()), all supported modes (Display.availableResolutions()), the physical Display.bounds(), the usable Display.workArea() (minus taskbar/dock), and the DPI Display.contentScale().
FileDialogs	Native system file/folder dialogs, obtained via Backend.fileDialogs().
FileDialogs.Filter	A file-name filter: a human-readable description plus glob patterns, e.g.
FrameCallback	Renders one frame of a window.
FrameInfo	Immutable per-frame metrics handed to a FrameCallback.
GpuRenderer	GPU rendering entry point for one window.
GraphicsInfo	Which graphics context a backend actually obtained, and which of the optional capabilities the toolkit uses are present on it.
ImageCursor	A custom mouse cursor built from an Image (a themed crosshair, a brush outline, a spell-target reticle), where the ten stock Cursor shapes are not enough.
NativeWindow	A top-level native window.
NativeWindow.ContentScaleListener	Notified when the window moves to a monitor with a different content scale.
NativeWindow.PopupKind	What a registered child window is, which decides whether a modal over the owner leaves it usable.
PointerMode	How the window treats the mouse pointer: visibility and capture.
RenderStats	A snapshot of GPU resources the renderer is holding: currently the number of GL textures resident (glyph-atlas pages + cached image textures) and their estimated size in bytes.
Resolution	An immutable screen mode: a pixel size and refresh rate.
ScreenRect	A rectangle in native screen coordinates: a Display's physical bounds or its usable work area (the monitor minus OS chrome like the taskbar/dock/menu bar).
WindowConfig	Initial configuration for a NativeWindow.
WindowInput	Receives a window's translated native input on the UI thread, in logical points.
WindowStyle	Visual framing of a window.