mirror of
https://github.com/glfw/glfw.git
synced 2024-11-23 02:25:10 +00:00
117 lines
4.2 KiB
Plaintext
117 lines
4.2 KiB
Plaintext
/*!
|
|
|
|
@page internals Internal structure
|
|
|
|
@tableofcontents
|
|
|
|
There are several interfaces inside GLFW. Each interface has its own area of
|
|
responsibility and its own naming conventions.
|
|
|
|
|
|
@section internals_public Public interface
|
|
|
|
The most well-known is the public interface, described in the glfw3.h header
|
|
file. This is implemented in source files shared by all platforms and these
|
|
files contain no platform-specific code. This code usually ends up calling the
|
|
platform and internal interfaces to do the actual work.
|
|
|
|
The public interface uses the OpenGL naming conventions except with GLFW and
|
|
glfw instead of GL and gl. For struct members, where OpenGL sets no precedent,
|
|
it use headless camel case.
|
|
|
|
Examples: @ref glfwCreateWindow, @ref GLFWwindow, @ref GLFWvidmode.redBits,
|
|
`GLFW_RED_BITS`
|
|
|
|
|
|
@section internals_native Native interface
|
|
|
|
The [native interface](@ref native) is a small set of publicly available
|
|
but platform-specific functions, described in the glfw3native.h header file and
|
|
used to gain access to the underlying window, context and (on some platforms)
|
|
display handles used by the platform interface.
|
|
|
|
The function names of the native interface are similar to those of the public
|
|
interface, but embeds the name of the interface that the returned handle is
|
|
from.
|
|
|
|
Examples: @ref glfwGetX11Window, @ref glfwGetWGLContext
|
|
|
|
|
|
@section internals_internal Internal interface
|
|
|
|
The internal interface consists of utility functions used by all other
|
|
interfaces. It is shared code implemented in the same shared source files as
|
|
the public and event interfaces. The internal interface is described in the
|
|
internal.h header file.
|
|
|
|
The internal interface is in charge of GLFW's global data, which it stores in
|
|
a `_GLFWlibrary` struct named `_glfw`.
|
|
|
|
The internal interface uses the same style as the public interface, except all
|
|
global names have a leading underscore.
|
|
|
|
Examples: @ref _glfwIsValidContextConfig, @ref _GLFWwindow, `_glfw.currentRamp`
|
|
|
|
|
|
@section internals_platform Platform interface
|
|
|
|
The platform interface implements all platform-specific operations as a service
|
|
to the public interface. This includes event processing. The platform
|
|
interface is never directly called by users of GLFW and never directly calls the
|
|
user's code. It is also prohibited from modifying the platform-independent part
|
|
of the internal structs. Instead, it calls the event interface when events
|
|
interesting to GLFW are received.
|
|
|
|
The platform interface mirrors those parts of the public interface that needs to
|
|
perform platform-specific operations on some or all platforms. The are also
|
|
named the same except that the glfw function prefix is replaced by
|
|
_glfwPlatform.
|
|
|
|
Examples: @ref _glfwPlatformCreateWindow
|
|
|
|
The platform interface also defines structs that contain platform-specific
|
|
global and per-object state. Their names mirror those of the internal
|
|
interface, except that an interface-specific suffix is added.
|
|
|
|
Examples: `_GLFWwindowX11`, `_GLFWcontextWGL`
|
|
|
|
These structs are incorporated as members into the internal interface structs
|
|
using special macros that name them after the specific interface used. This
|
|
prevents shared code from accidentally using these members.
|
|
|
|
Examples: `window.win32.handle`, `_glfw.x11.display`
|
|
|
|
|
|
@section internals_event Event interface
|
|
|
|
The event interface is implemented in the same shared source files as the public
|
|
interface and is responsible for delivering the events it receives to the user,
|
|
either via callbacks, via window state changes or both.
|
|
|
|
The function names of the event interface use a `_glfwInput` prefix and the
|
|
ObjectEvent pattern.
|
|
|
|
Examples: @ref _glfwInputWindowFocus, @ref _glfwInputCursorMotion
|
|
|
|
|
|
@section internals_static Static functions
|
|
|
|
Static functions may be used by any interface and have no prefixes or suffixes.
|
|
These use headless camel case.
|
|
|
|
Examples: `clearScrollOffsets`
|
|
|
|
|
|
@section internals_config Configuration macros
|
|
|
|
GLFW uses a number of configuration macros to select at compile time which
|
|
interfaces and code paths to use. They are defined in the config.h header file,
|
|
which is generated from the `config.h.in` file by CMake.
|
|
|
|
Configuration macros the same style as tokens in the public interface, except
|
|
with a leading underscore.
|
|
|
|
Examples: `_GLFW_HAS_GLXGETPROCADDRESS`
|
|
|
|
*/
|