389 lines
17 KiB
Nim
389 lines
17 KiB
Nim
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##
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## GLFM
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## https://github.com/brackeen/glfm
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## Copyright (c) 2014-2017 David Brackeen
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##
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## This software is provided 'as-is', without any express or implied warranty.
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## In no event will the authors be held liable for any damages arising from the
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## use of this software. Permission is granted to anyone to use this software
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## for any purpose, including commercial applications, and to alter it and
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## redistribute it freely, subject to the following restrictions:
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##
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## 1. The origin of this software must not be misrepresented; you must not
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## claim that you wrote the original software. If you use this software in a
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## product, an acknowledgment in the product documentation would be appreciated
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## but is not required.
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## 2. Altered source versions must be plainly marked as such, and must not be
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## misrepresented as being the original software.
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## 3. This notice may not be removed or altered from any source distribution.
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##
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const
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GLFM_VERSION_MAJOR* = 0
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GLFM_VERSION_MINOR* = 9
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GLFM_VERSION_REVISION* = 0
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## One of these will be defined:
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## GLFM_PLATFORM_IOS
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## GLFM_PLATFORM_TVOS
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## GLFM_PLATFORM_ANDROID
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## GLFM_PLATFORM_EMSCRIPTEN
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#{.passC: "-I" & (currentSourcePath() / "../").}
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when defined(android):
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{.compile: "glfm_android.c".}
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const
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GLFM_PLATFORM_ANDROID* = true
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GLFM_INCLUDE_ES32* = true
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elif defined(emscripten):
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{.compile: "glfm_emscripten.c".}
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const
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GLFM_PLATFORM_EMSCRIPTEN* = true
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GLFM_INCLUDE_ES3* = true
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elif defined(ios):
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{.compile: "glfm_apple.m".}
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when defined(TARGET_OS_TV):
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const
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GLFM_PLATFORM_TVOS* = true
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GLFM_INCLUDE_ES3* = true
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else:
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const
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GLFM_PLATFORM_IOS* = true
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GLFM_INCLUDE_ES3* = true
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## OpenGL ES includes
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# when defined(GLFM_INCLUDE_ES32):
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# when defined(GLFM_PLATFORM_IOS) or defined(GLFM_PLATFORM_TVOS):
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# elif defined(GLFM_PLATFORM_EMSCRIPTEN):
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# elif defined(GLFM_INCLUDE_ES31):
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# when defined(GLFM_PLATFORM_IOS) or defined(GLFM_PLATFORM_TVOS):
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# elif defined(GLFM_PLATFORM_EMSCRIPTEN):
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# elif defined(GLFM_INCLUDE_ES3):
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# when defined(GLFM_PLATFORM_IOS) or defined(GLFM_PLATFORM_TVOS):
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# elif defined(GLFM_PLATFORM_EMSCRIPTEN):
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# elif not defined(GLFM_INCLUDE_NONE):
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# when defined(GLFM_PLATFORM_IOS) or defined(GLFM_PLATFORM_TVOS):
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## MARK: Enums
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type
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GLFMRenderingAPI* {.size:sizeof(cint).} = enum
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GLFMRenderingAPIOpenGLES2, GLFMRenderingAPIOpenGLES3,
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GLFMRenderingAPIOpenGLES31, GLFMRenderingAPIOpenGLES32,
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GLFMRenderingAPIMetal
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GLFMColorFormat* {.size:sizeof(cint).} = enum
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GLFMColorFormatRGBA8888, GLFMColorFormatRGB888, GLFMColorFormatRGB565
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GLFMDepthFormat* {.size:sizeof(cint).} = enum
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GLFMDepthFormatNone, GLFMDepthFormat16, GLFMDepthFormat24
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GLFMStencilFormat* {.size:sizeof(cint).} = enum
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GLFMStencilFormatNone, GLFMStencilFormat8
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GLFMMultisample* {.size:sizeof(cint).} = enum
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GLFMMultisampleNone, GLFMMultisample4X
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## GLFMUserInterfaceChrome defines whether system UI chrome (status bar, navigation bar) is shown.
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## This value is ignored on Emscripten.
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## GLFMUserInterfaceChromeNavigation (default)
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## - Android: Show the navigation bar
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## - iOS: Show the home indicator on iPhone X
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## GLFMUserInterfaceChromeNavigationAndStatusBar:
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## - Android: Show the navigation bar and status bar
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## - iOS: Show status bar, and show the home indicator on iPhone X
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## GLFMUserInterfaceChromeFullscreen
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## - Android 2.3: Fullscreen
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## - Android 4.0 - 4.3: Navigation bar dimmed
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## - Android 4.4: Fullscreen immersive mode
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## - iOS: Fullscreen
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type
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GLFMUserInterfaceChrome* {.size:sizeof(cint).} = enum
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GLFMUserInterfaceChromeNavigation,
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GLFMUserInterfaceChromeNavigationAndStatusBar,
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GLFMUserInterfaceChromeFullscreen
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GLFMUserInterfaceOrientation* {.size:sizeof(cint).} = enum
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GLFMUserInterfaceOrientationAny, GLFMUserInterfaceOrientationPortrait,
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GLFMUserInterfaceOrientationLandscape
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GLFMTouchPhase* {.size:sizeof(cint).} = enum
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GLFMTouchPhaseHover, GLFMTouchPhaseBegan, GLFMTouchPhaseMoved,
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GLFMTouchPhaseEnded, GLFMTouchPhaseCancelled
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GLFMMouseCursor* {.size:sizeof(cint).} = enum
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GLFMMouseCursorAuto, GLFMMouseCursorNone, GLFMMouseCursorDefault,
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GLFMMouseCursorPointer, GLFMMouseCursorCrosshair, GLFMMouseCursorText
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GLFMKey* {.size:sizeof(cint).} = enum
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GLFMKeyBackspace = 0x00000008, GLFMKeyTab = 0x00000009, GLFMKeyEnter = 0x0000000D,
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GLFMKeyEscape = 0x0000001B, GLFMKeySpace = 0x00000020, GLFMKeyLeft = 0x00000025,
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GLFMKeyUp = 0x00000026, GLFMKeyRight = 0x00000027, GLFMKeyDown = 0x00000028,
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GLFMKeyNavBack = 0x00001000, GLFMKeyNavMenu = 0x00001001,
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GLFMKeyNavSelect = 0x00001002, GLFMKeyPlayPause = 0x00002000
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GLFMKeyModifier* {.size:sizeof(cint).} = enum
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GLFMKeyModifierShift = (1 shl 0), GLFMKeyModifierCtrl = (1 shl 1),
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GLFMKeyModifierAlt = (1 shl 2), GLFMKeyModifierMeta = (1 shl 3)
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GLFMKeyAction* {.size:sizeof(cint).} = enum
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GLFMKeyActionPressed, GLFMKeyActionRepeated, GLFMKeyActionReleased
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## MARK: Structs and function pointers
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type
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GLFMDisplay* {.importc:"void".} = object
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## Function pointer returned from glfmGetProcAddress
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type
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GLFMProc* = proc () {.cdecl.}
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## Render callback function. See `glfmSetRenderFunc`.
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type GLFMRenderFunc* = proc (display: ptr GLFMDisplay) {.cdecl.}
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## Main loop callback function. The frame time is in seconds, and is not related to wall time.
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## DEPRECATED, use `glfmSetRenderFunc`
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type GLFMMainLoopFunc* = proc (display: ptr GLFMDisplay; frameTime: cdouble) {.cdecl.}
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## Callback function for mouse or touch events. The (x,y) values are in pixels.
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## The function should return true if the event was handled, and false otherwise.
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type GLFMTouchFunc* = proc (display: ptr GLFMDisplay; touch: cint; phase: GLFMTouchPhase;
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x: cdouble; y: cdouble): bool {.cdecl.}
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## Callback function for key events.
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## The function should return true if the event was handled, and false otherwise.
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type GLFMKeyFunc* = proc (display: ptr GLFMDisplay; keyCode: GLFMKey;
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action: GLFMKeyAction; modifiers: cint): bool {.cdecl.}
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## Callback function for character input events.
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type GLFMCharFunc* = proc (display: ptr GLFMDisplay; utf8: cstring; modifiers: cint) {.cdecl.}
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## Callback function for keyboard visibility, in pixels.
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type GLFMKeyboardVisibilityChangedFunc* = proc (display: ptr GLFMDisplay; visible: bool;
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x: cdouble; y: cdouble; width: cdouble; height: cdouble) {.cdecl.}
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## Callback when the surface could not be created.
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type GLFMSurfaceErrorFunc* = proc (display: ptr GLFMDisplay; message: cstring) {.cdecl.}
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## Callback function when the OpenGL surface is created
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type GLFMSurfaceCreatedFunc* = proc (display: ptr GLFMDisplay; width: cint; height: cint) {.cdecl.}
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## Callback function when the OpenGL surface is resized (or rotated).
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type GLFMSurfaceResizedFunc* = proc (display: ptr GLFMDisplay; width: cint; height: cint) {.cdecl.}
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## Callback function when the OpenGL surface is destroyed.
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type GLFMSurfaceDestroyedFunc* = proc (display: ptr GLFMDisplay) {.cdecl.}
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## Callback function when the system recieves a low memory warning.
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type
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GLFMMemoryWarningFunc* = proc (display: ptr GLFMDisplay) {.cdecl.}
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GLFMAppFocusFunc* = proc (display: ptr GLFMDisplay; focused: bool) {.cdecl.}
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type GLFMInterfaceOrientation* {.size:sizeof(cint).} = enum
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GLFMInterfaceOrientationUnknown = 0
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GLFMInterfaceOrientationPortrait = (1 shl 0)
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GLFMInterfaceOrientationPortraitUpsideDown = (1 shl 1)
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GLFMInterfaceOrientationLandscapeLeft = (1 shl 2)
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GLFMInterfaceOrientationLandscapeRight = (1 shl 3)
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GLFMInterfaceOrientationLandscape = ((1 shl 2) or
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(1 shl 3)),
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GLFMInterfaceOrientationAllButUpsideDown = ((1 shl 0) or
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(1 shl 2) or
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(1 shl 3))
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GLFMInterfaceOrientationAll = ((1 shl 0) or
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(1 shl 1) or
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(1 shl 2) or
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(1 shl 3))
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## Callback function when the app interface orientation changes.
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## See `glfmSetOrientationChangedFunc`.
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type GLFMOrientationChangedFunc* = proc (display: ptr GLFMDisplay,
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orientation: GLFMInterfaceOrientation) {.cdecl.}
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## Callback function when the chrome insets ("safe area insets") changes.
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## See `glfmSetDisplayChromeInsetsChangedFunc` and `glfmGetDisplayChromeInsets`.
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type GLFMDisplayChromeInsetsChangedFunc* = proc (display: ptr GLFMDisplay, top, right, bottom, left: float) {.cdecl.}
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## MARK: Functions
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## Main entry point for the app, where the display can be initialized and the GLFMMainLoopFunc
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## can be set.
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{.push importc, cdecl.}
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proc glfmMain*(display: ptr GLFMDisplay)
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## Init the display condifuration. Should only be called in glfmMain.
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## If the device does not support the preferred rendering API, the next available rendering API is
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## chosen (OpenGL ES 3.0 if OpenGL ES 3.1 is not available, and OpenGL ES 2.0 if OpenGL ES 3.0 is
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## not available). Call glfmGetRenderingAPI in the GLFMSurfaceCreatedFunc to see which rendering
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## API was chosen.
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proc glfmSetDisplayConfig*(display: ptr GLFMDisplay; preferredAPI: GLFMRenderingAPI;
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colorFormat: GLFMColorFormat;
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depthFormat: GLFMDepthFormat;
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stencilFormat: GLFMStencilFormat;
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multisample: GLFMMultisample)
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proc glfmSetUserData*(display: ptr GLFMDisplay; userData: pointer)
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proc glfmGetUserData*(display: ptr GLFMDisplay): pointer
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## Swap buffers.
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##
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## This function should be called at the end of the `GLFMRenderFunc` if any content was rendered.
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##
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## - Emscripten: This function does nothing. Buffer swapping happens automatically if any
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## OpenGL calls were made.
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##
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## - Apple platforms: When using the Metal rendering API, this function does nothing.
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## Presenting the Metal drawable must happen in application code.
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proc glfmSwapBuffers*(display: ptr GLFMDisplay)
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## Sets the allowed user interface orientations
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proc glfmSetUserInterfaceOrientation*(display: ptr GLFMDisplay; allowedOrientations: GLFMUserInterfaceOrientation)
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## Returns the allowed user interface orientations
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proc glfmGetUserInterfaceOrientation*(display: ptr GLFMDisplay): GLFMUserInterfaceOrientation
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## Sets whether multitouch input is enabled. By default, multitouch is disabled.
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proc glfmSetMultitouchEnabled*(display: ptr GLFMDisplay; multitouchEnabled: bool)
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## Gets whether multitouch input is enabled. By default, multitouch is disabled.
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proc glfmGetMultitouchEnabled*(display: ptr GLFMDisplay): bool
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## Returns the supported user interface orientations. Default is `GLFMInterfaceOrientationAll`.
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##
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## Actual support may be limited by the device or platform.
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proc glfmGetSupportedInterfaceOrientation*(display: ptr GLFMDisplay): GLFMInterfaceOrientation
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## Sets the supported user interface orientations.
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##
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## Typical values are `GLFMInterfaceOrientationAll`, `GLFMInterfaceOrientationPortrait`, or
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## `GLFMInterfaceOrientationLandscape.`
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##
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## Actual support may be limited by the device or platform.
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proc glfmSetSupportedInterfaceOrientation*(display: ptr GLFMDisplay, supportedOrientations: GLFMInterfaceOrientation)
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## Gets the current user interface orientation.
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##
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## - Returns: Either `GLFMInterfaceOrientationPortrait`, `GLFMInterfaceOrientationLandscapeLeft`,
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## `GLFMInterfaceOrientationLandscapeRight`, `GLFMInterfaceOrientationPortraitUpsideDown`, or
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## `GLFMInterfaceOrientationUnknown`.
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proc glfmGetInterfaceOrientation*(display: ptr GLFMDisplay): GLFMInterfaceOrientation
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## Gets the display size, in pixels.
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proc glfmGetDisplaySize*(display: ptr GLFMDisplay; width: ptr cint; height: ptr cint)
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## Gets the display scale. On Apple devices, the value will be 1.0 for non-retina displays and 2.0
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## for retina.
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proc glfmGetDisplayScale*(display: ptr GLFMDisplay): cdouble
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## Gets the chrome insets, in pixels (AKA "safe area insets" in iOS). This is the space taken
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## on the outer edges of the display by status bars, navigation bars, and other UI elements.
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proc glfmGetDisplayChromeInsets*(display: ptr GLFMDisplay; top: ptr cdouble;
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right: ptr cdouble; bottom: ptr cdouble;
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left: ptr cdouble)
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## Gets the user interface chrome.
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proc glfmGetDisplayChrome*(display: ptr GLFMDisplay): GLFMUserInterfaceChrome
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## Sets the user interface chrome.
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## On Emscripten, to switch to fullscreen, this function must be called from an user-generated event handler.
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proc glfmSetDisplayChrome*(display: ptr GLFMDisplay;
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uiChrome: GLFMUserInterfaceChrome)
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## Gets the rendering API of the display. The return value is not valid until the surface is
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## created. Defaults to GLFMRenderingAPIOpenGLES2.
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proc glfmGetRenderingAPI*(display: ptr GLFMDisplay): GLFMRenderingAPI
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## Gets whether the display has touch capabilities.
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proc glfmHasTouch*(display: ptr GLFMDisplay): bool
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## Sets the mouse cursor (only on platforms with a mouse)
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proc glfmSetMouseCursor*(display: ptr GLFMDisplay; mouseCursor: GLFMMouseCursor)
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## Checks if a named OpenGL extension is supported
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proc glfmExtensionSupported*(extension: cstring): bool
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## Gets the address of the specified function.
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proc glfmGetProcAddress*(functionName: cstring): GLFMProc
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## Sets the function to call before each frame is displayed.
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##
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## This function is called at regular intervals (typically 60fps).
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## Applications will typically render in this callback. If the application rendered any content,
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## the application should call `glfmSwapBuffers` before returning. If the application did
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## not render content, it should return without calling `glfmSwapBuffers`.
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proc glfmSetRenderFunc*(display: ptr GLFMDisplay; mainLoopFunc: GLFMRenderFunc): GLFMRenderFunc {.discardable.}
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## *Deprecated:* Use ``glfmSetRenderFunc``.
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##
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## If this function is set, `glfmSwapBuffers` is called after calling the `GLFMMainLoopFunc`.
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proc glfmSetMainLoopFunc*(display: ptr GLFMDisplay; mainLoopFunc: GLFMMainLoopFunc): GLFMMainLoopFunc {.discardable,deprecated.}
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## Sets the function to call when a mouse or touch event occurs.
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proc glfmSetTouchFunc*(display: ptr GLFMDisplay; touchFunc: GLFMTouchFunc): GLFMTouchFunc {.discardable.}
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## Sets the function to call when a key event occurs.
|
||
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## Note, on iOS, only pressed events are sent (no repeated or released events) and with no
|
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## modifiers.
|
||
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proc glfmSetKeyFunc*(display: ptr GLFMDisplay; keyFunc: GLFMKeyFunc): GLFMKeyFunc {.discardable.}
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|
||
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## Sets the function to call when character input events occur.
|
||
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proc glfmSetCharFunc*(display: ptr GLFMDisplay; charFunc: GLFMCharFunc): GLFMCharFunc {.discardable.}
|
||
|
|
|
||
|
|
## Sets the function to call when the surface could not be created.
|
||
|
|
## For example, the browser does not support WebGL.
|
||
|
|
proc glfmSetSurfaceErrorFunc*(display: ptr GLFMDisplay;
|
||
|
|
surfaceErrorFunc: GLFMSurfaceErrorFunc): GLFMSurfaceErrorFunc {.discardable.}
|
||
|
|
|
||
|
|
## Sets the function to call when the surface was created
|
||
|
|
proc glfmSetSurfaceCreatedFunc*(display: ptr GLFMDisplay;
|
||
|
|
surfaceCreatedFunc: GLFMSurfaceCreatedFunc): GLFMSurfaceCreatedFunc {.discardable.}
|
||
|
|
|
||
|
|
## Sets the function to call when the surface was resized (or rotated).
|
||
|
|
proc glfmSetSurfaceResizedFunc*(display: ptr GLFMDisplay;
|
||
|
|
surfaceResizedFunc: GLFMSurfaceResizedFunc): GLFMSurfaceResizedFunc {.discardable.}
|
||
|
|
|
||
|
|
## Sets the function to call when the surface was destroyed. For example, OpenGL context loss.
|
||
|
|
## All OpenGL resources should be deleted in this call.
|
||
|
|
proc glfmSetSurfaceDestroyedFunc*(display: ptr GLFMDisplay;
|
||
|
|
surfaceDestroyedFunc: GLFMSurfaceDestroyedFunc): GLFMSurfaceDestroyedFunc {.discardable.}
|
||
|
|
|
||
|
|
## Sets the function to call when app interface orientation changes.
|
||
|
|
proc glfmSetOrientationChangedFunc*(display: ptr GLFMDisplay,
|
||
|
|
orientationChangedFunc: GLFMOrientationChangedFunc): GLFMOrientationChangedFunc {.discardable.}
|
||
|
|
|
||
|
|
## Sets the function to call when display chrome insets ("safe area insets") changes.
|
||
|
|
## See also `glfmGetDisplayChromeInsets`
|
||
|
|
proc glfmSetDisplayChromeInsetsChangedFunc*(display: ptr GLFMDisplay,
|
||
|
|
chromeInsetsChangedFunc: GLFMDisplayChromeInsetsChangedFunc): GLFMDisplayChromeInsetsChangedFunc {.discardable.}
|
||
|
|
|
||
|
|
proc glfmSetMemoryWarningFunc*(display: ptr GLFMDisplay;
|
||
|
|
lowMemoryFunc: GLFMMemoryWarningFunc)
|
||
|
|
proc glfmSetAppFocusFunc*(display: ptr GLFMDisplay; focusFunc: GLFMAppFocusFunc): GLFMAppFocusFunc {.discardable.}
|
||
|
|
|
||
|
|
## Requests to show or hide the onscreen virtual keyboard. On Emscripten, this function does
|
||
|
|
## nothing.
|
||
|
|
proc glfmSetKeyboardVisible*(display: ptr GLFMDisplay; visible: bool)
|
||
|
|
|
||
|
|
## Returns true if the virtual keyboard is currently visible.
|
||
|
|
proc glfmIsKeyboardVisible*(display: ptr GLFMDisplay): bool
|
||
|
|
|
||
|
|
## Sets the function to call when the virtual keyboard changes visibility or changes bounds.
|
||
|
|
proc glfmSetKeyboardVisibilityChangedFunc*(display: ptr GLFMDisplay;
|
||
|
|
visibilityChangedFunc: GLFMKeyboardVisibilityChangedFunc)
|
||
|
|
when defined(android):
|
||
|
|
proc glfmAndroidGetActivity*(): pointer {.deprecated.} #ptr ANativeActivity
|
||
|
|
proc glfmAndroidGetActivity*(display: ptr GLFMDisplay): pointer
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#TODO iOS
|
||
|
|
proc glfmFilesDir*(): cstring
|
||
|
|
proc glfmHomeDir*(): cstring
|
||
|
|
proc glfmBundleDir*(): cstring
|
||
|
|
proc glfmReadFileSize*(filename: cstring): cint
|
||
|
|
proc glfmReadFileBuffer*(filename, buffer: cstring): cint
|
||
|
|
proc glfmStart*()
|
||
|
|
{.pop.}
|