Allow megaparsec 9.2 (#112 )

Closes #106
Bump imgui to 1.85 (#111 )
2025-07-04 20:18:47 +02:00 · 2021-10-30 18:57:15 +00:00 · 2021-10-30 18:49:39 +00:00 · 2021-10-04 18:49:16 +00:00 · 2021-10-04 18:41:07 +00:00 · 2021-10-04 17:29:32 +00:00
22 changed files with 2468 additions and 189 deletions
--- a/ChangeLog.md
+++ b/ChangeLog.md
@ -0,0 +1,47 @@
+# Changelog for dear-imgui
+
+## [1.2.2]
+
+- `imgui` updated to 1.85.
+
+## [1.2.1]
+
+- Added `DearImGui.Raw.IO` with attribute setters.
+
+## [1.2.0]
+
+- Fixed `nullPtr` in place of default arguments.
+- Added functions for getting window position and size.
+- Added `invisibleButton`.
+- Added `inputTextMultiline` and `inputTextWithHint`.
+- Changed `beginChild` and related `withChild*` to use full arguments.
+- Added `withChildContext` to run actions inside other child window.
+- Added `getCurrentContext`, `setCurrentContext`.
+- Added `image` and `imageButton`.
+- Added font atlas utilities.
+
+## [1.1.0]
+
+- `imgui` updated to 1.84.2.
+- Removed unused Window argument from SDL `newFrame` to match 1.84.
+- Added GLFW backend callbacks.
+- Added more withXXX wrappers.
+
+## [1.0.2]
+
+- Added `withID` and `ToID(..)` to make composable components possible.
+
+## [1.0.1]
+
+- Fixed missing headers in source dist.
+
+## [1.0.0]
+
+Initial Hackage release based on 1.83.
+
+[1.0.0]: https://github.com/haskell-game/dear-imgui.hs/tree/v1.0.0
+[1.0.1]: https://github.com/haskell-game/dear-imgui.hs/tree/v1.0.1
+[1.0.2]: https://github.com/haskell-game/dear-imgui.hs/tree/v1.0.2
+[1.1.0]: https://github.com/haskell-game/dear-imgui.hs/tree/v1.1.0
+[1.2.0]: https://github.com/haskell-game/dear-imgui.hs/tree/v1.2.0
+[1.3.0]: https://github.com/haskell-game/dear-imgui.hs/tree/v1.3.0
--- a/Main.hs
+++ b/Main.hs
@ -7,6 +7,7 @@ module Main (main) where

 import Control.Monad
 import Data.IORef
+import qualified Data.Vector as Vector
 import DearImGui
 import DearImGui.OpenGL3
 import DearImGui.SDL
@ -38,8 +39,6 @@ main = do
      tab2 <- newIORef True
      loop w checked color slider r pos size' selected tab1 tab2

-      openGL3Shutdown
-

 loop
  :: Window
@ -53,11 +52,11 @@ loop
  -> IORef Bool
  -> IORef Bool
  -> IO ()
-loop w checked color slider r pos size' selected tab1Ref tab2Ref = do
-  quit <- pollEvents
+loop window checked color slider r pos size' selected tab1Ref tab2Ref = do
+  shouldQuit <- checkEvents

  openGL3NewFrame
-  sdl2NewFrame w
+  sdl2NewFrame
  newFrame

  -- showDemoWindow
@ -122,7 +121,7 @@ loop w checked color slider r pos size' selected tab1Ref tab2Ref = do

  progressBar 0.314 (Just "Pi")

-  beginChild "Child"
+  beginChild "Child" (ImVec2 0 0) True ImGuiWindowFlags_None

  beginCombo "Label" "Preview" >>= whenTrue do
    selectable "Testing 1"
@ -133,6 +132,21 @@ loop w checked color slider r pos size' selected tab1Ref tab2Ref = do

  endChild

+  text "ListClipper"
+  withChildOpen "##fixed" (ImVec2 0 200) True ImGuiWindowFlags_None do
+    let lotsOfItems = Vector.generate 50 (mappend "Item " . show)
+    withListClipper Nothing lotsOfItems text
+
+  text "ListClipper, Haskell-powered"
+  withChildOpen "##infinite" (ImVec2 0 200) True ImGuiWindowFlags_None do
+    let infiniteItems = map (mappend "Item " . show) [0 :: Int ..]
+    withListClipper Nothing infiniteItems text
+
+  text "Ethereal ListClipper"
+  withChildOpen "##ethereal" (ImVec2 0 200) True ImGuiWindowFlags_None do
+    withListClipper Nothing (ClipRange (0 :: Int) 1000) $
+      text . mappend "Item " . show
+
  plotHistogram "A histogram" [ 10, 10, 20, 30, 90 ]

  colorPicker3 "Test" color
@ -164,13 +178,15 @@ loop w checked color slider r pos size' selected tab1Ref tab2Ref = do
  glClear GL_COLOR_BUFFER_BIT
  openGL3RenderDrawData =<< getDrawData

-  glSwapWindow w
+  glSwapWindow window

-  if quit then return () else loop w checked color slider r pos size' selected tab1Ref tab2Ref
+  if shouldQuit
+    then return ()
+    else loop window checked color slider r pos size' selected tab1Ref tab2Ref

  where

-    pollEvents = do
+    checkEvents = do
      ev <- pollEventWithImGui

      case ev of
@ -180,9 +196,9 @@ loop w checked color slider r pos size' selected tab1Ref tab2Ref = do
                QuitEvent -> True
                _         -> False

-          (isQuit ||) <$> pollEvents
+          (isQuit ||) <$> checkEvents


 whenTrue :: IO () -> Bool -> IO ()
 whenTrue io True  = io
-whenTrue io False = return ()
+whenTrue _io False = return ()
--- a/README.md
+++ b/README.md
@ -25,7 +25,7 @@ OpenGL:

 ```
 package dear-imgui
-  flags: +sdl +opengl
+  flags: +sdl +opengl3
 ```

 With this done, the following module is the "Hello, World!" of ImGui:
@ -54,38 +54,35 @@ main = do

  runManaged do
    -- Create a window using SDL. As we're using OpenGL, we need to enable OpenGL too.
-    w <- do
+    window <- do
      let title = "Hello, Dear ImGui!"
      let config = defaultWindow { windowGraphicsContext = OpenGLContext defaultOpenGL }
      managed $ bracket (createWindow title config) destroyWindow

    -- Create an OpenGL context
-    glContext <- managed $ bracket (glCreateContext w) glDeleteContext
+    glContext <- managed $ bracket (glCreateContext window) glDeleteContext

    -- Create an ImGui context
    _ <- managed $ bracket createContext destroyContext

    -- Initialize ImGui's SDL2 backend
-    _ <- managed_ $ bracket_ (sdl2InitForOpenGL w glContext) sdl2Shutdown
+    _ <- managed_ $ bracket_ (sdl2InitForOpenGL window glContext) sdl2Shutdown

    -- Initialize ImGui's OpenGL backend
    _ <- managed_ $ bracket_ openGL2Init openGL2Shutdown

-    liftIO $ mainLoop w
+    liftIO $ mainLoop window


 mainLoop :: Window -> IO ()
-mainLoop w = do
-  -- Process the event loop
-  untilNothingM pollEventWithImGui
-
+mainLoop window = unlessQuit do
  -- Tell ImGui we're starting a new frame
  openGL2NewFrame
-  sdl2NewFrame w
+  sdl2NewFrame
  newFrame

  -- Build the GUI
-  bracket_ (begin "Hello, ImGui!") end do
+  withWindowOpen "Hello, ImGui!" do
    -- Add a text widget
    text "Hello, ImGui!"

@ -103,12 +100,25 @@ mainLoop w = do
  render
  openGL2RenderDrawData =<< getDrawData

-  glSwapWindow w
+  glSwapWindow window

-  mainLoop w
+  mainLoop window

  where
-    untilNothingM m = m >>= maybe (return ()) (\_ -> untilNothingM m)
+    -- Process the event loop
+    unlessQuit action = do
+      shouldQuit <- checkEvents
+      if shouldQuit then pure () else action
+
+    checkEvents = do
+      pollEventWithImGui >>= \case
+        Nothing ->
+          return False
+        Just event ->
+          (isQuit event ||) <$> checkEvents
+
+    isQuit event =
+      SDL.eventPayload event == SDL.QuitEvent
 ```

 # Hacking
--- a/cabal.project
+++ b/cabal.project
@ -1,3 +1,4 @@
 packages: *.cabal
 package dear-imgui
  flags: +sdl2 +glfw +opengl2 +opengl3 +vulkan +examples
+  ghc-options: -Wall -Wcompat -fno-warn-unused-do-bind
--- a/dear-imgui.cabal
+++ b/dear-imgui.cabal
@ -1,9 +1,67 @@
 cabal-version: 3.0
+
 name: dear-imgui
-version: 1.0.0
+version: 1.2.2
+author: Oliver Charles
+maintainer: ollie@ocharles.org.uk, aenor.realm@gmail.com
+license: BSD-3-Clause
+
+category: Graphics
+synopsis: Haskell bindings for Dear ImGui.
+description:
+  The package supports multiple rendering backends.
+  Set package flags according to your needs.
+
 build-type: Simple
-data-files:
-  imgui/imgui.h
+extra-source-files:
+  README.md,
+  ChangeLog.md
+
+extra-source-files:
+  imgui/*.h,
+  imgui/backends/*.h,
+  imgui/backends/*.mm,
+  imgui/imconfig.h,
+  imgui/LICENSE.txt
+
+common build-flags
+  if flag(debug)
+    if os(linux)
+      ghc-options: -Wall -g -rtsopts -dcore-lint -debug
+      cc-options: -g -O0 -fsanitize=address -fno-omit-frame-pointer
+      cxx-options: -g -O0 -fsanitize=address -fno-omit-frame-pointer -std=c++11
+    if os(darwin)
+      ghc-options: -Wall -g -rtsopts -dcore-lint -debug
+      cc-options: -g -O0 -fsanitize=address -fno-omit-frame-pointer
+      cxx-options: -g -O0 -fsanitize=address -fno-omit-frame-pointer -std=c++11
+    if os(windows)
+      ghc-options: -Wall -g -rtsopts -dcore-lint -debug
+      cc-options: -g -O0
+      cxx-options: -g -O0 -std=c++11
+  else
+    if os(linux)
+      ghc-options: -Wall -O2
+      cc-options: -O2
+      cxx-options: -std=c++11 -O2
+    if os(darwin)
+      ghc-options: -Wall -O2
+      cc-options: -O2
+    if os(windows)
+      ghc-options: -Wall -O2
+      cc-options: -O2
+
+
+source-repository head
+  type: git
+  location: https://github.com/haskell-game/dear-imgui.hs
+
+flag debug
+  description:
+    Enable debug mode.
+  default:
+    False
+  manual:
+    True

 flag opengl2
  description:
@ -59,8 +117,6 @@ common common
        >= 4.12 && < 4.17
  default-language:
      Haskell2010
-  ghc-options:
-      -Wall

 library
  import: common
@ -69,18 +125,20 @@ library
  exposed-modules:
    DearImGui
    DearImGui.Raw
+    DearImGui.Raw.DrawList
+    DearImGui.Raw.ListClipper
+    DearImGui.Raw.IO
  other-modules:
    DearImGui.Context
    DearImGui.Enums
    DearImGui.Structs
+  cxx-options: -std=c++11
  cxx-sources:
    imgui/imgui.cpp
    imgui/imgui_demo.cpp
    imgui/imgui_draw.cpp
    imgui/imgui_tables.cpp
    imgui/imgui_widgets.cpp
-  cxx-options:
-    -std=c++11
  extra-libraries:
    stdc++
  include-dirs:
@ -93,6 +151,7 @@ library
    , inline-c-cpp
    , StateVar
    , unliftio
+    , vector

  if flag(opengl2)
    exposed-modules:
@ -158,7 +217,8 @@ library
    exposed-modules:
      DearImGui.GLFW
    build-depends:
-      GLFW-b
+      GLFW-b,
+      bindings-GLFW
    cxx-sources:
      imgui/backends/imgui_impl_glfw.cpp

@ -194,9 +254,9 @@ library dear-imgui-generator
    , inline-c
        >= 0.9.0.0 && < 0.10
    , megaparsec
-        >= 9.0 && < 9.1
+        >= 9.0 && < 9.3
    , parser-combinators
-        >= 1.2.0 && < 1.3
+        >= 1.2.0 && < 1.4
    , scientific
        >= 0.3.6.2 && < 0.3.8
    , text
@ -209,40 +269,46 @@ library dear-imgui-generator
        >= 0.2.11 && < 0.2.15

 executable test
-  import: common
+  import: common, build-flags
  main-is: Main.hs
  default-language: Haskell2010
-  ghc-options: -Wall
  if (!flag(examples) || !flag(sdl) || !flag(opengl2))
    buildable: False
  else
-    build-depends: base, sdl2, gl, dear-imgui
+    build-depends: base, sdl2, gl, dear-imgui, vector

 executable glfw
+  import: common, build-flags
  main-is: Main.hs
  hs-source-dirs: examples/glfw
  default-language: Haskell2010
-  ghc-options: -Wall
  if (!flag(examples) || !flag(glfw) || !flag(opengl2))
    buildable: False
  else
    build-depends: base, GLFW-b, gl, dear-imgui, managed

 executable readme
-  import: common
+  import: common, build-flags
  main-is: Readme.hs
  hs-source-dirs: examples
  build-depends: sdl2, gl, dear-imgui, managed
  if (!flag(examples) || !flag(sdl) || !flag(opengl2))
    buildable: False

+executable image
+  import: common, build-flags
+  main-is: Image.hs
+  hs-source-dirs: examples/sdl
+  build-depends: sdl2, gl, dear-imgui, managed, vector
+  if (!flag(examples) || !flag(sdl) || !flag(opengl2))
+    buildable: False
+
 executable vulkan
-  import: common
+  import: common, build-flags
  main-is: Main.hs
  other-modules: Attachments, Backend, Input, Util
  hs-source-dirs: examples/vulkan
  default-language: Haskell2010
-  ghc-options: -Wall
  if (!flag(examples) || !flag(sdl) || !flag(vulkan))
    buildable: False
  else
--- a/default.nix
+++ b/default.nix
@ -4,12 +4,12 @@ haskellNix ? (import (import ./nix/sources.nix)."haskell.nix" { })
 # haskell.nix provides access to the nixpkgs pins which are used by our CI,
 # hence you will be more likely to get cache hits when using these.
 # But you can also just use your own, e.g. '<nixpkgs>'.
-, nixpkgsSrc ? haskellNix.sources.nixpkgs-2009
+, nixpkgsSrc ? haskellNix.sources.nixpkgs-2105

  # haskell.nix provides some arguments to be passed to nixpkgs, including some
  # patches and also the haskell.nix functionality itself as an overlay.
 , nixpkgsArgs ? haskellNix.nixpkgsArgs
-, compiler-nix-name ? "ghc884"
+, compiler-nix-name ? "ghc8107"
 }:
 let
  pkgs = import nixpkgsSrc nixpkgsArgs;
--- a/examples/Readme.hs
+++ b/examples/Readme.hs
@ -24,34 +24,31 @@ main = do

  runManaged do
    -- Create a window using SDL. As we're using OpenGL, we need to enable OpenGL too.
-    w <- do
+    window <- do
      let title = "Hello, Dear ImGui!"
      let config = defaultWindow { windowGraphicsContext = OpenGLContext defaultOpenGL }
      managed $ bracket (createWindow title config) destroyWindow

    -- Create an OpenGL context
-    glContext <- managed $ bracket (glCreateContext w) glDeleteContext
+    glContext <- managed $ bracket (glCreateContext window) glDeleteContext

    -- Create an ImGui context
    _ <- managed $ bracket createContext destroyContext

    -- Initialize ImGui's SDL2 backend
-    _ <- managed_ $ bracket_ (sdl2InitForOpenGL w glContext) sdl2Shutdown
+    _ <- managed_ $ bracket_ (sdl2InitForOpenGL window glContext) sdl2Shutdown

    -- Initialize ImGui's OpenGL backend
    _ <- managed_ $ bracket_ openGL2Init openGL2Shutdown

-    liftIO $ mainLoop w
+    liftIO $ mainLoop window


 mainLoop :: Window -> IO ()
-mainLoop w = do
-  -- Process the event loop
-  untilNothingM pollEventWithImGui
-
+mainLoop window = unlessQuit do
  -- Tell ImGui we're starting a new frame
  openGL2NewFrame
-  sdl2NewFrame w
+  sdl2NewFrame
  newFrame

  -- Build the GUI
@ -73,9 +70,22 @@ mainLoop w = do
  render
  openGL2RenderDrawData =<< getDrawData

-  glSwapWindow w
+  glSwapWindow window

-  mainLoop w
+  mainLoop window

  where
-    untilNothingM m = m >>= maybe (return ()) (\_ -> untilNothingM m)
+    -- Process the event loop
+    unlessQuit action = do
+      shouldQuit <- checkEvents
+      if shouldQuit then pure () else action
+
+    checkEvents = do
+      pollEventWithImGui >>= \case
+        Nothing ->
+          return False
+        Just event ->
+          (isQuit event ||) <$> checkEvents
+
+    isQuit event =
+      SDL.eventPayload event == SDL.QuitEvent
--- a/examples/sdl/Image.hs
+++ b/examples/sdl/Image.hs
@ -0,0 +1,195 @@
+{-# language BlockArguments #-}
+{-# language LambdaCase #-}
+{-# language OverloadedStrings #-}
+
+{- | Drawing an DearImGui image using OpenGL textures.
+
+https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples
+-}
+
+module Main ( main ) where
+
+import Control.Exception
+import Control.Monad.IO.Class (MonadIO(..))
+import Control.Monad.Managed (managed, managed_, runManaged)
+import DearImGui
+import qualified DearImGui.Raw as Raw
+import qualified DearImGui.Raw.DrawList as DrawList
+import DearImGui.OpenGL3
+import DearImGui.SDL
+import DearImGui.SDL.OpenGL
+import Graphics.GL
+import qualified SDL as SDL
+
+--  For the texture creation
+import Foreign
+import qualified Data.Vector.Storable as VS
+
+data Texture = Texture
+  { textureID     :: GLuint
+  , textureWidth  :: GLsizei
+  , textureHeight :: GLsizei
+  }
+  deriving (Show)
+
+textureSize :: Texture -> ImVec2
+textureSize texture =
+  ImVec2
+    (fromIntegral $ textureWidth texture)
+    (fromIntegral $ textureHeight texture)
+
+-- | Create a texture pointer in GL memory.
+create2DTexture :: Int -> Int -> IO Texture
+create2DTexture width height =
+  alloca \ptr -> do
+    glGenTextures 1 ptr
+    tID <- peek ptr
+    return Texture
+      { textureID     = tID
+      , textureWidth  = fromIntegral width
+      , textureHeight = fromIntegral height
+      }
+
+bindTexture :: Texture -> Ptr GLubyte -> IO ()
+bindTexture texture dataPtr = do
+  glEnable GL_TEXTURE_2D
+  glBindTexture GL_TEXTURE_2D (textureID texture)
+
+  glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MIN_FILTER GL_LINEAR
+  glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MAG_FILTER GL_LINEAR
+  glTexParameteri GL_TEXTURE_2D GL_TEXTURE_WRAP_S GL_REPEAT
+  glTexParameteri GL_TEXTURE_2D GL_TEXTURE_WRAP_T GL_REPEAT
+
+  glTexImage2D
+    GL_TEXTURE_2D
+    0
+    GL_RGB
+    (textureWidth texture)
+    (textureHeight texture)
+    0
+    GL_RGB
+    GL_UNSIGNED_BYTE
+    (castPtr dataPtr)
+
+fill :: Texture -> (GLubyte, GLubyte, GLubyte) -> VS.Vector GLubyte
+fill texture (r, g, b) =
+  VS.generate
+    (3 * width * height)
+    (\i ->
+        case i `mod` 3 of
+          0 -> r
+          1 -> g
+          2 -> b
+          _ -> error "assert: 3-byte pitch"
+    )
+  where
+    width  = fromIntegral (textureWidth texture)
+    height = fromIntegral (textureHeight texture)
+
+
+main :: IO ()
+main = do
+  -- Initialize SDL
+  SDL.initializeAll
+
+  runManaged do
+    -- Create a window using SDL. As we're using OpenGL, we need to enable OpenGL too.
+    window <- do
+      let title = "Hello, Dear ImGui!"
+      let config = SDL.defaultWindow { SDL.windowGraphicsContext = SDL.OpenGLContext SDL.defaultOpenGL, SDL.windowResizable = True }
+      managed $ bracket (SDL.createWindow title config) SDL.destroyWindow
+
+    -- Create an OpenGL context
+    glContext <- managed $ bracket (SDL.glCreateContext window) SDL.glDeleteContext
+
+    -- Create an ImGui context
+    _dearContext <- managed $ bracket createContext destroyContext
+
+    -- Initialize ImGui's SDL2 backend
+    managed_ $ bracket_ (sdl2InitForOpenGL window glContext) sdl2Shutdown
+
+    -- Initialize ImGui's OpenGL backend
+    managed_ $ bracket_ openGL3Init do
+      putStrLn "ImguiOpenGL shut down"
+      openGL3Shutdown
+
+    liftIO do
+      blueish <- create2DTexture 320 240
+      VS.unsafeWith (fill blueish (0x00, 0x7F, 0xFF)) $
+        bindTexture blueish
+
+      pinkish <- create2DTexture 240 320
+      VS.unsafeWith (fill pinkish (0xFF, 0x00, 0x7F)) $
+        bindTexture pinkish
+
+      err <- glGetError
+      putStrLn $ "Error-code: " ++ show err
+
+      print (blueish, pinkish)
+      mainLoop window (blueish, pinkish) False
+
+mainLoop :: SDL.Window -> (Texture, Texture) -> Bool -> IO ()
+mainLoop window textures flag = unlessQuit do
+  -- Tell ImGui we're starting a new frame
+  openGL3NewFrame
+  sdl2NewFrame
+  newFrame
+
+  let texture = if flag then fst textures else snd textures
+  -- Drawing images require some backend-specific code.
+  -- Meanwhile, we have to deal with raw bindings.
+  let openGLtextureID = intPtrToPtr $ fromIntegral $ textureID texture
+
+  -- Build the GUI
+  clicked <- withWindow "Image example" \open ->
+    if open then do
+      text "That's an image, click it"
+      newLine
+
+      -- Using imageButton
+      Foreign.with (textureSize texture) \sizePtr ->
+        Foreign.with (ImVec2 0 0) \uv0Ptr ->
+          Foreign.with (ImVec2 1 1) \uv1Ptr ->
+            Foreign.with (ImVec4 1 1 1 1) \tintColPtr ->
+              Foreign.with (ImVec4 1 1 1 1) \bgColPtr ->
+                Raw.imageButton openGLtextureID sizePtr uv0Ptr uv1Ptr (-1) bgColPtr tintColPtr
+    else
+      pure False
+
+  -- Using DrawList
+  bg <- getBackgroundDrawList
+  Foreign.with (ImVec2 100 100) \pMin ->
+    Foreign.with (ImVec2 200 200) \pMax ->
+      Foreign.with (ImVec2 0.25 0.25) \uvMin ->
+        Foreign.with (ImVec2 0.75 0.75) \uvMax ->
+          DrawList.addImageRounded
+            bg
+            openGLtextureID
+            pMin pMax uvMin uvMax
+            (Raw.imCol32 0 255 0 0xFF) -- Extract green channel
+            32 ImDrawFlags_RoundCornersBottom
+
+  -- Render
+  glClear GL_COLOR_BUFFER_BIT
+
+  DearImGui.render
+  DearImGui.getDrawData >>= openGL3RenderDrawData
+
+  SDL.glSwapWindow window
+
+  mainLoop window textures (flag /= clicked)
+
+  where
+    unlessQuit action = do
+      shouldQuit <- checkEvents
+      if shouldQuit then pure () else action
+
+    checkEvents = do
+      pollEventWithImGui >>= \case
+        Nothing ->
+          return False
+        Just event ->
+          (isQuit event ||) <$> checkEvents
+
+    isQuit event =
+      SDL.eventPayload event == SDL.QuitEvent
--- a/examples/vulkan/Main.hs
+++ b/examples/vulkan/Main.hs
@ -83,6 +83,20 @@ type Handler    = LogMessage -> ResourceT IO ()
 deriving via ( ReaderT Handler (ResourceT IO) )
  instance MonadResource ( LoggingT LogMessage (ResourceT IO) )

+gui :: MonadIO m => m ImGui.DrawData
+gui = do
+  -- Prepare frame
+  ImGui.Vulkan.vulkanNewFrame
+  ImGui.SDL.sdl2NewFrame
+  ImGui.newFrame
+
+  -- Run your windows
+  ImGui.showDemoWindow
+
+  -- Process ImGui state into draw commands
+  ImGui.render
+  ImGui.getDrawData
+
 main :: IO ()
 main = runResourceT . ( `runLoggingT` logHandler ) $ app @( LoggingT LogMessage ( ResourceT IO ) )

@ -120,6 +134,12 @@ app = do
    ImGui.createContext
    ImGui.destroyContext

+  logDebug "Adding fonts"
+  ImGui.clearFontAtlas
+  _default <- ImGui.addFontDefault
+  _custom <- ImGui.addFontFromFileTTF "imgui/misc/fonts/ProggyTiny.ttf" 10
+  ImGui.buildFontAtlas
+
  let
    preferredFormat :: Vulkan.SurfaceFormatKHR
    preferredFormat =
@ -341,12 +361,6 @@ app = do
                pure ( True, False )
              else
                handleJust vulkanException ( pure . reloadQuit ) do
-                  ImGui.Vulkan.vulkanNewFrame
-                  ImGui.SDL.sdl2NewFrame window
-                  ImGui.newFrame
-                  ImGui.showDemoWindow
-                  ImGui.render
-                  drawData <- ImGui.getDrawData
                  let
                    commandBuffer :: Vulkan.CommandBuffer
                    commandBuffer = commandBuffers Boxed.Vector.! fromIntegral nextImageIndex
@ -355,7 +369,10 @@ app = do
                  Vulkan.resetCommandBuffer commandBuffer Vulkan.zero
                  beginCommandBuffer commandBuffer
                  cmdBeginRenderPass commandBuffer imGuiRenderPass framebuffer clearValues swapchainExtent
+
+                  drawData <- gui
                  ImGui.Vulkan.vulkanRenderDrawData drawData commandBuffer Nothing
+
                  cmdEndRenderPass commandBuffer
                  endCommandBuffer commandBuffer
                  submitCommandBuffer
--- a/generator/DearImGui/Generator.hs
+++ b/generator/DearImGui/Generator.hs
@ -12,8 +12,6 @@ module DearImGui.Generator
 -- base
 import Control.Arrow
  ( second )
-import Data.Coerce
-  ( coerce )
 import Data.Bits
  ( Bits )
 import Data.Foldable
@ -54,7 +52,6 @@ import qualified Language.Haskell.TH.Syntax as TH

 -- text
 import qualified Data.Text as Text
-  ( isInfixOf, null, unpack, unlines )
 import qualified Data.Text.IO as Text
  ( readFile )

@ -128,9 +125,9 @@ declareEnumeration finiteEnumName countName ( Enumeration {..} ) = do
    classes :: [ TH.Q TH.Type ]
    classes
      | isFlagEnum
-      = map TH.conT [ ''Eq, ''Ord, ''Storable, ''Bits ]
+      = map TH.conT [ ''Eq, ''Ord, ''Show, ''Storable, ''Bits ]
      | otherwise
-      = map TH.conT [ ''Eq, ''Ord, ''Storable ]
+      = map TH.conT [ ''Eq, ''Ord, ''Show, ''Storable ]
    derivClause :: TH.Q TH.DerivClause
    derivClause = TH.derivClause ( Just TH.NewtypeStrategy ) classes

@ -161,7 +158,7 @@ declareEnumeration finiteEnumName countName ( Enumeration {..} ) = do
      pure ( finiteEnumInst : )
    else pure id

-  synonyms <- for patterns \ ( patternName, patternValue, CommentText patDoc ) -> do
+  synonyms <- for patterns \ ( patternName, patternValue, CommentText _patDoc ) -> do
    let
      patNameStr :: String
      patNameStr = Text.unpack patternName
@ -169,7 +166,7 @@ declareEnumeration finiteEnumName countName ( Enumeration {..} ) = do
    patSynSig <- TH.patSynSigD patName ( TH.conT tyName )
    pat       <-
 #if MIN_VERSION_template_haskell(2,18,0)
-      ( if   Text.null patDoc
+      ( if   Text.null _patDoc
        then TH.patSynD
        else
          \ nm args dir pat ->
--- a/2
+++ b/2
--- a/nix/sources.json
+++ b/nix/sources.json
@ -5,10 +5,10 @@
        "homepage": "https://input-output-hk.github.io/haskell.nix",
        "owner": "input-output-hk",
        "repo": "haskell.nix",
-        "rev": "ef4aef4ce2060dc1a41b2690df1f54f986e0f9ab",
-        "sha256": "0537fbjh4mcnywa33h4hl135kw7i8c0j8qndyzv5i82j7mc8wjvs",
+        "rev": "970c84ad19e84d4ae42075cfe283022394f6effa",
+        "sha256": "01afbcas324n7j2bpfib7b4fazg5y6k7b74803c0i9ayrs6sgav6",
        "type": "tarball",
-        "url": "https://github.com/input-output-hk/haskell.nix/archive/ef4aef4ce2060dc1a41b2690df1f54f986e0f9ab.tar.gz",
+        "url": "https://github.com/input-output-hk/haskell.nix/archive/970c84ad19e84d4ae42075cfe283022394f6effa.tar.gz",
        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
    },
    "niv": {
@ -17,10 +17,10 @@
        "homepage": "https://github.com/nmattia/niv",
        "owner": "nmattia",
        "repo": "niv",
-        "rev": "3cd7914b2c4cff48927e11c216dadfab7d903fe5",
-        "sha256": "1agq4nvbhrylf2s77kb4xhh9k7xcwdwggq764k4jgsbs70py8cw3",
+        "rev": "e0ca65c81a2d7a4d82a189f1e23a48d59ad42070",
+        "sha256": "1pq9nh1d8nn3xvbdny8fafzw87mj7gsmp6pxkdl65w2g18rmcmzx",
        "type": "tarball",
-        "url": "https://github.com/nmattia/niv/archive/3cd7914b2c4cff48927e11c216dadfab7d903fe5.tar.gz",
+        "url": "https://github.com/nmattia/niv/archive/e0ca65c81a2d7a4d82a189f1e23a48d59ad42070.tar.gz",
        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
    },
    "nixpkgs": {
--- a/nix/sources.nix
+++ b/nix/sources.nix
@ -6,52 +6,63 @@ let
  # The fetchers. fetch_<type> fetches specs of type <type>.
  #

-  fetch_file = pkgs: spec:
+  fetch_file = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
      if spec.builtin or true then
-      builtins_fetchurl { inherit (spec) url sha256; }
+        builtins_fetchurl { inherit (spec) url sha256; name = name'; }
      else
-      pkgs.fetchurl { inherit (spec) url sha256; };
+        pkgs.fetchurl { inherit (spec) url sha256; name = name'; };

-  fetch_tarball = pkgs: spec:
+  fetch_tarball = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
      if spec.builtin or true then
-      builtins_fetchTarball { inherit (spec) url sha256; }
+        builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
      else
-      pkgs.fetchzip { inherit (spec) url sha256; };
+        pkgs.fetchzip { name = name'; inherit (spec) url sha256; };

-  fetch_git = spec:
-    builtins.fetchGit { url = spec.repo; inherit (spec) rev ref; };
+  fetch_git = name: spec:
+    let
+      ref =
+        if spec ? ref then spec.ref else
+          if spec ? branch then "refs/heads/${spec.branch}" else
+            if spec ? tag then "refs/tags/${spec.tag}" else
+              abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
+    in
+      builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };

-  fetch_builtin-tarball = spec:
-    builtins.trace
-      ''
-        WARNING:
-          The niv type "builtin-tarball" will soon be deprecated. You should
-          instead use `builtin = true`.
+  fetch_local = spec: spec.path;

-          $ niv modify <package> -a type=tarball -a builtin=true
-      ''
-      builtins_fetchTarball { inherit (spec) url sha256; };
+  fetch_builtin-tarball = name: throw
+    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=tarball -a builtin=true'';

-  fetch_builtin-url = spec:
-    builtins.trace
-      ''
-        WARNING:
-          The niv type "builtin-url" will soon be deprecated. You should
-          instead use `builtin = true`.
-
-          $ niv modify <package> -a type=file -a builtin=true
-      ''
-      (builtins_fetchurl { inherit (spec) url sha256; });
+  fetch_builtin-url = name: throw
+    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=file -a builtin=true'';

  #
  # Various helpers
  #

+  # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
+  sanitizeName = name:
+    (
+      concatMapStrings (s: if builtins.isList s then "-" else s)
+        (
+          builtins.split "[^[:alnum:]+._?=-]+"
+            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
+        )
+    );
+
  # The set of packages used when specs are fetched using non-builtins.
-  mkPkgs = sources:
+  mkPkgs = sources: system:
    let
      sourcesNixpkgs =
-        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {};
+        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
      hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
      hasThisAsNixpkgsPath = <nixpkgs> == ./.;
    in
@ -71,14 +82,27 @@ let

    if ! builtins.hasAttr "type" spec then
      abort "ERROR: niv spec ${name} does not have a 'type' attribute"
-    else if spec.type == "file" then fetch_file pkgs spec
-    else if spec.type == "tarball" then fetch_tarball pkgs spec
-    else if spec.type == "git" then fetch_git spec
-    else if spec.type == "builtin-tarball" then fetch_builtin-tarball spec
-    else if spec.type == "builtin-url" then fetch_builtin-url spec
+    else if spec.type == "file" then fetch_file pkgs name spec
+    else if spec.type == "tarball" then fetch_tarball pkgs name spec
+    else if spec.type == "git" then fetch_git name spec
+    else if spec.type == "local" then fetch_local spec
+    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
+    else if spec.type == "builtin-url" then fetch_builtin-url name
    else
      abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";

+  # If the environment variable NIV_OVERRIDE_${name} is set, then use
+  # the path directly as opposed to the fetched source.
+  replace = name: drv:
+    let
+      saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
+      ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
+    in
+      if ersatz == "" then drv else
+        # this turns the string into an actual Nix path (for both absolute and
+        # relative paths)
+        if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
+
  # Ports of functions for older nix versions

  # a Nix version of mapAttrs if the built-in doesn't exist
@ -87,23 +111,37 @@ let
    listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
  );

+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
+  range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
+  stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
+  stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
+  concatMapStrings = f: list: concatStrings (map f list);
+  concatStrings = builtins.concatStringsSep "";
+
+  # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
+  optionalAttrs = cond: as: if cond then as else {};
+
  # fetchTarball version that is compatible between all the versions of Nix
-  builtins_fetchTarball = { url, sha256 }@attrs:
+  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
    let
      inherit (builtins) lessThan nixVersion fetchTarball;
    in
      if lessThan nixVersion "1.12" then
-        fetchTarball { inherit url; }
+        fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
      else
        fetchTarball attrs;

  # fetchurl version that is compatible between all the versions of Nix
-  builtins_fetchurl = { url, sha256 }@attrs:
+  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
    let
      inherit (builtins) lessThan nixVersion fetchurl;
    in
      if lessThan nixVersion "1.12" then
-        fetchurl { inherit url; }
+        fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
      else
        fetchurl attrs;

@ -115,14 +153,15 @@ let
        then abort
          "The values in sources.json should not have an 'outPath' attribute"
        else
-          spec // { outPath = fetch config.pkgs name spec; }
+          spec // { outPath = replace name (fetch config.pkgs name spec); }
    ) config.sources;

  # The "config" used by the fetchers
  mkConfig =
-    { sourcesFile ? ./sources.json
-    , sources ? builtins.fromJSON (builtins.readFile sourcesFile)
-    , pkgs ? mkPkgs sources
+    { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
+    , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
+    , system ? builtins.currentSystem
+    , pkgs ? mkPkgs sources system
    }: rec {
      # The sources, i.e. the attribute set of spec name to spec
      inherit sources;
@ -130,5 +169,6 @@ let
      # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
      inherit pkgs;
    };
+
 in
 mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }
--- a/src/DearImGui.hs
+++ b/src/DearImGui.hs
@ -1,7 +1,9 @@
 {-# LANGUAGE BlockArguments #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE NamedFieldPuns #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE PatternSynonyms #-}
@ -19,6 +21,8 @@ module DearImGui
    Raw.Context(..)
  , Raw.createContext
  , Raw.destroyContext
+  , Raw.getCurrentContext
+  , Raw.setCurrentContext

    -- * Main
  , Raw.newFrame
@ -48,6 +52,16 @@ module DearImGui

  , begin
  , Raw.end
+
+    -- ** Utilities
+
+  , Raw.getWindowDrawList
+  , Raw.getWindowPos
+  , Raw.getWindowSize
+  , Raw.getWindowWidth
+  , Raw.getWindowHeight
+
+    -- ** Manipulation
  , setNextWindowPos
  , setNextWindowSize
  , Raw.setNextWindowFullscreen
@ -56,15 +70,19 @@ module DearImGui
  , setNextWindowCollapsed
  , setNextWindowBgAlpha

-    -- * Child Windows
+    -- ** Child Windows
  , withChild
  , withChildOpen
+  , withChildContext
  , beginChild
  , Raw.endChild

    -- * Parameter stacks
+  , withStyleColor
  , pushStyleColor
  , Raw.popStyleColor
+
+  , withStyleVar
  , pushStyleVar
  , popStyleVar

@ -74,9 +92,13 @@ module DearImGui
  , Raw.newLine
  , Raw.spacing
  , dummy
+
+  , withIndent
  , indent
  , unindent
+
  , setNextItemWidth
+  , withItemWidth
  , pushItemWidth
  , Raw.popItemWidth

@ -87,6 +109,10 @@ module DearImGui
  , setCursorPos
  , Raw.alignTextToFramePadding

+    -- * ID stack
+  , withID
+  , ToID(..)
+
    -- * Widgets
    -- ** Text
  , text
@ -99,7 +125,9 @@ module DearImGui
    -- ** Main
  , button
  , smallButton
+  , invisibleButton
  , arrowButton
+  , Raw.image
  , checkbox
  , progressBar
  , Raw.bullet
@ -143,12 +171,14 @@ module DearImGui

    -- ** Text Input
  , inputText
+  , inputTextMultiline
+  , inputTextWithHint

-    -- * Color Editor/Picker
+    -- ** Color Editor/Picker
  , colorPicker3
  , colorButton

-    -- * Trees
+    -- ** Trees
  , treeNode
  , treePush
  , Raw.treePop
@ -159,7 +189,7 @@ module DearImGui
    -- ** List Boxes
  , listBox

-    -- * Data Plotting
+    -- ** Data Plotting
  , plotHistogram

    -- ** Menus
@ -193,7 +223,7 @@ module DearImGui
  , tabItemButton
  , setTabItemClosed

-    -- * Tooltips
+    -- ** Tooltips
  , withTooltip
  , Raw.beginTooltip
  , Raw.endTooltip
@ -217,6 +247,25 @@ module DearImGui
  , Raw.wantCaptureMouse
  , Raw.wantCaptureKeyboard

+    -- * Fonts
+  , Raw.Font
+  , addFontFromFileTTF
+  , Raw.addFontDefault
+  , Raw.buildFontAtlas
+  , Raw.clearFontAtlas
+
+    -- * Utilities
+
+    -- ** ListClipper
+  , withListClipper
+  , ClipItems(..)
+  , ClipRange(..)
+
+    -- ** Miscellaneous
+  , Raw.getBackgroundDrawList
+  , Raw.getForegroundDrawList
+  , Raw.imCol32
+
    -- * Types
  , module DearImGui.Enums
  , module DearImGui.Structs
@ -231,6 +280,9 @@ import Data.Foldable
  ( foldl' )
 import Foreign
 import Foreign.C
+import qualified GHC.Foreign as Foreign
+import System.IO
+  ( utf8 )

 -- dear-imgui
 import DearImGui.Enums
@ -252,7 +304,12 @@ import UnliftIO (MonadUnliftIO)
 import UnliftIO.Exception (bracket, bracket_)

 import qualified DearImGui.Raw as Raw
+import qualified DearImGui.Raw.ListClipper as Raw.ListClipper

+-- vector
+import qualified Data.Vector as V
+import qualified Data.Vector.Storable as VS
+import qualified Data.Vector.Unboxed as VU

 -- | Get the compiled version string e.g. "1.80 WIP" (essentially the value for
 -- @IMGUI_VERSION@ from the compiled version of @imgui.cpp@).
@ -271,7 +328,7 @@ getVersion = liftIO do
 begin :: MonadIO m => String -> m Bool
 begin name = liftIO do
  withCString name \namePtr ->
-    Raw.begin namePtr nullPtr (ImGuiWindowFlags 0)
+    Raw.begin namePtr Nothing Nothing

 -- | Append items to a window.
 --
@ -303,7 +360,7 @@ withFullscreen action = bracket open close (`when` action)
    open = liftIO do
      Raw.setNextWindowFullscreen
      withCString "FullScreen" \namePtr ->
-        Raw.begin namePtr nullPtr fullscreenFlags
+        Raw.begin namePtr (Just nullPtr) (Just fullscreenFlags)

    close = liftIO . const Raw.end

@ -321,31 +378,58 @@ fullscreenFlags = foldl' (.|.) zeroBits
  , ImGuiWindowFlags_NoTitleBar
  ]

-- | Wraps @ImGui::BeginChild()@.
-beginChild :: MonadIO m => String -> m Bool
-beginChild name = liftIO do
-  withCString name Raw.beginChild

-- | Child windows used for self-contained independent scrolling/clipping regions
-- within a host window. Child windows can embed their own child.
+-- | Begin a self-contained independent scrolling/clipping regions within a host window.
+--
+-- Child windows can embed their own child.
+--
+-- For each independent axis of @size@:
+--   * ==0.0f: use remaining host window size
+--   * >0.0f: fixed size
+--   * <0.0f: use remaining window size minus abs(size)
+--
+-- Each axis can use a different mode, e.g. @ImVec2 0 400@.
+--
+-- @BeginChild()@ returns `False` to indicate the window is collapsed or fully clipped, so you may early out and omit submitting anything to the window.
+--
+-- Always call a matching `endChild` for each `beginChild` call, regardless of its return value.
+--
+-- Wraps @ImGui::BeginChild()@.
+beginChild :: MonadIO m => String -> ImVec2 -> Bool -> ImGuiWindowFlags -> m Bool
+beginChild name size border flags = liftIO do
+  withCString name \namePtr ->
+    with size \sizePtr ->
+      Raw.beginChild namePtr sizePtr (bool 0 1 border) flags
+
+-- | Action wrapper for child windows.
 --
 -- Action will get 'False' if the child region is collapsed or fully clipped.
-withChild :: MonadUnliftIO m => String -> (Bool -> m a) -> m a
-withChild name = bracket (beginChild name) (const Raw.endChild)
+withChild :: MonadUnliftIO m => String -> ImVec2 -> Bool -> ImGuiWindowFlags -> (Bool -> m a) -> m a
+withChild name size border flags = bracket (beginChild name size border flags) (const Raw.endChild)

-- | Child windows used for self-contained independent scrolling/clipping regions
-- within a host window. Child windows can embed their own child.
+-- | Action-skipping wrapper for child windows.
 --
 -- Action will be skipped if the child region is collapsed or fully clipped.
-withChildOpen :: MonadUnliftIO m => String -> m () -> m ()
-withChildOpen name action =
-  withChild name (`when` action)
+withChildOpen :: MonadUnliftIO m => String -> ImVec2 -> Bool -> ImGuiWindowFlags -> m () -> m ()
+withChildOpen name size border flags action =
+  withChild name size border flags (`when` action)
+
+-- | Action wrapper to run in a context of another child window addressed by its name.
+--
+-- Action will get 'False' if the child region is collapsed or fully clipped.
+withChildContext :: MonadUnliftIO m => String -> (Bool -> m a) -> m a
+withChildContext name action =
+  bracket
+    (liftIO $ withCString name Raw.beginChildContext)
+    (const Raw.endChild)
+    action
+

 -- | Plain text.
 text :: MonadIO m => String -> m ()
 text t = liftIO do
  withCString t \textPtr ->
-    Raw.textUnformatted textPtr nullPtr
+    Raw.textUnformatted textPtr Nothing

 -- | Colored text.
 textColored :: (HasGetter ref ImVec4, MonadIO m) => ref -> String -> m ()
@ -395,6 +479,19 @@ smallButton label = liftIO do
  withCString label Raw.smallButton


+-- | Flexible button behavior without the visuals.
+--
+-- Frequently useful to build custom behaviors using the public api
+-- (along with IsItemActive, IsItemHovered, etc).
+--
+-- Wraps @ImGui::InvisibleButton()@.
+invisibleButton :: MonadIO m => String -> ImVec2 -> ImGuiButtonFlags -> m Bool
+invisibleButton label size flags = liftIO do
+  withCString label \labelPtr ->
+    with size \sizePtr ->
+      Raw.invisibleButton labelPtr sizePtr flags
+
+
 -- | Square button with an arrow shape.
 --
 -- Wraps @ImGui::ArrowButton()@.
@ -1053,18 +1150,69 @@ vSliderScalar label size dataType ref refMin refMax format flags = liftIO do

 -- | Wraps @ImGui::InputText()@.
 inputText :: (MonadIO m, HasSetter ref String, HasGetter ref String) => String -> ref -> Int -> m Bool
-inputText desc ref refSize = liftIO do
+inputText label ref bufSize =
+  withInputString ref bufSize \bufPtrLen ->
+      Foreign.withCString utf8 label \labelPtr ->
+        Raw.inputText
+          labelPtr
+          bufPtrLen
+          ImGuiInputTextFlags_None
+
+
+-- | Wraps @ImGui::InputTextMultiline()@.
+inputTextMultiline :: (MonadIO m, HasSetter ref String, HasGetter ref String) => String -> ref -> Int -> ImVec2 -> m Bool
+inputTextMultiline label ref bufSize size =
+  withInputString ref bufSize \bufPtrLen ->
+    Foreign.withCString utf8 label \labelPtr ->
+      with size \sizePtr ->
+        Raw.inputTextMultiline
+          labelPtr
+          bufPtrLen
+          sizePtr
+          ImGuiInputTextFlags_None
+
+
+-- | Wraps @ImGui::InputTextWithHint()@.
+inputTextWithHint :: (MonadIO m, HasSetter ref String, HasGetter ref String) => String -> String -> ref -> Int -> m Bool
+inputTextWithHint label hint ref bufSize =
+  withInputString ref bufSize \bufPtrLen ->
+    Foreign.withCString utf8 label \labelPtr ->
+      Foreign.withCString utf8 hint \hintPtr ->
+        Raw.inputTextWithHint
+          labelPtr
+          hintPtr
+          bufPtrLen
+          ImGuiInputTextFlags_None
+
+
+-- | Internal helper to prepare appropriately sized and encoded input buffer.
+withInputString
+  :: (MonadIO m, HasSetter ref String, HasGetter ref String)
+  => ref
+  -> Int
+  -> (CStringLen -> IO Bool)
+  -> m Bool
+withInputString ref bufSize action = liftIO do
  input <- get ref
-  withCString input \ refPtr -> do
-    withCString desc \ descPtr -> do
-      let refSize' :: CInt
-          refSize' = fromIntegral refSize
-      changed <- Raw.inputText descPtr refPtr refSize'
+  Foreign.withCStringLen utf8 input \(refPtr, refSize) ->
+    -- XXX: Allocate and zero buffer to receive imgui updates.
+    bracket (mkBuf refSize) free \bufPtr -> do
+      -- XXX: Copy the original input.
+      copyBytes bufPtr refPtr refSize
+
+      changed <- action (bufPtr, bufSize)

      when changed do
-        peekCString refPtr >>= ($=!) ref
+        -- XXX: Assuming Imgui wouldn't write over the bump stop so peekCString would finish.
+        newValue <- Foreign.peekCString utf8 bufPtr
+        ref $=! newValue

      return changed
+  where
+    mkBuf refSize =
+      callocBytes $
+        max refSize bufSize +
+        5 -- XXX: max size of UTF8 code point + NUL terminator


 -- | Wraps @ImGui::ColorPicker3()@.
@ -1357,9 +1505,9 @@ setNextWindowPos posRef cond pivotMaybe = liftIO do
      Just pivotRef -> do
        pivot <- get pivotRef
        with pivot $ \pivotPtr ->
-          Raw.setNextWindowPos posPtr cond pivotPtr
+          Raw.setNextWindowPos posPtr cond (Just pivotPtr)
      Nothing ->
-        Raw.setNextWindowPos posPtr cond nullPtr
+        Raw.setNextWindowPos posPtr cond Nothing

 -- | Set next window size. Call before `begin`
 --
@ -1415,6 +1563,9 @@ dummy sizeRef = liftIO do
  size' <- get sizeRef
  with size' Raw.dummy

+withIndent :: MonadUnliftIO m => Float -> m a -> m a
+withIndent width =
+  bracket_ (indent width) (unindent width)

 -- | Move content position toward the right, by indent_w, or style.IndentSpacing if indent_w <= 0
 --
@ -1440,6 +1591,10 @@ setNextItemWidth itemWidth = liftIO do
  Raw.setNextItemWidth (CFloat itemWidth)


+withItemWidth :: MonadUnliftIO m => Float -> m a -> m a
+withItemWidth width =
+  bracket_ (pushItemWidth width) Raw.popItemWidth
+
 -- Wraps @ImGui::PushItemWidth()@
 pushItemWidth :: (MonadIO m) => Float -> m ()
 pushItemWidth itemWidth = liftIO do
@ -1460,8 +1615,52 @@ setCursorPos posRef = liftIO do
  pos <- get posRef
  with pos Raw.setCursorPos

+-- | Add an element to a ID stack
+--
+-- Read the FAQ (http://dearimgui.org/faq) for more details
+-- about how ID are handled in dear imgui.
+--
+-- Those questions are answered and impacted by understanding of the ID stack system:
+-- * "Q: Why is my widget not reacting when I click on it?"
+-- * "Q: How can I have widgets with an empty label?"
+-- * "Q: How can I have multiple widgets with the same label?"
+--
+-- Wraps @ImGui::PushId@ and @ImGui::PopId@
+withID :: (MonadUnliftIO m, ToID id) => id -> m a -> m a
+withID i = bracket_ (liftIO $ pushID i) Raw.popID

-- | Modify a style color by pushing to the shared stack. always use this if you modify the style after `newFrame`
+-- | A supplementary class to match overloaded functions in C++ the library.
+class ToID a where
+  pushID :: MonadIO m => a -> m ()
+
+instance ToID CInt where
+  pushID = Raw.pushIDInt
+
+instance ToID Int where
+  pushID = Raw.pushIDInt . fromIntegral
+
+instance ToID Integer where
+  pushID = Raw.pushIDInt . fromInteger
+
+instance {-# OVERLAPPABLE #-} ToID (Ptr a) where
+  pushID = Raw.pushIDPtr
+
+instance {-# OVERLAPPING #-} ToID (Ptr CChar) where
+  pushID = Raw.pushIDStr
+
+instance ToID (Ptr CChar, Int) where
+  pushID = Raw.pushIDStrLen
+
+instance ToID String where
+  pushID s = liftIO $ withCStringLen s pushID
+
+withStyleColor :: (MonadUnliftIO m, HasGetter ref ImVec4) => ImGuiCol -> ref -> m a -> m a
+withStyleColor color ref =
+  bracket_ (pushStyleColor color ref) (Raw.popStyleColor 1)
+
+-- | Modify a style color by pushing to the shared stack.
+--
+-- Always use this if you modify the style after `newFrame`.
 --
 -- Wraps @ImGui::PushStyleColor()@
 pushStyleColor :: (MonadIO m, HasGetter ref ImVec4) => ImGuiCol -> ref -> m ()
@ -1470,8 +1669,13 @@ pushStyleColor col colorRef = liftIO do
  with color \colorPtr ->
    Raw.pushStyleColor col colorPtr

+withStyleVar :: (MonadUnliftIO m, HasGetter ref ImVec2) => ImGuiStyleVar -> ref -> m a -> m a
+withStyleVar style ref =
+  bracket_ (pushStyleVar style ref) (Raw.popStyleVar 1)

-- | Modify a style variable by pushing to the shared stack. always use this if you modify the style after `newFrame`
+-- | Modify a style variable by pushing to the shared stack.
+--
+-- Always use this if you modify the style after `newFrame`.
 --
 -- Wraps @ImGui::PushStyleVar()@
 pushStyleVar :: (MonadIO m, HasGetter ref ImVec2) => ImGuiStyleVar -> ref -> m ()
@ -1480,10 +1684,111 @@ pushStyleVar style valRef = liftIO do
  with val \valPtr ->
    Raw.pushStyleVar style valPtr

-
 -- | Remove style variable modifications from the shared stack
 --
 -- Wraps @ImGui::PopStyleVar()@
 popStyleVar :: (MonadIO m) => Int -> m ()
 popStyleVar n = liftIO do
  Raw.popStyleVar (fromIntegral n)
+
+
+-- | Load a font from TTF file.
+--
+-- Specify font path and atlas glyph size.
+--
+-- Use 'addFontDefault' if you want to retain built-in font too.
+--
+-- Call 'buildFontAtlas' after adding all the fonts.
+--
+-- Call backend-specific `CreateFontsTexture` before using 'newFrame'.
+addFontFromFileTTF :: MonadIO m => FilePath -> Float -> m (Maybe Raw.Font)
+addFontFromFileTTF font size = liftIO do
+  res@(Raw.Font ptr) <- withCString font \fontPtr ->
+    Raw.addFontFromFileTTF fontPtr (CFloat size)
+  pure $
+    if castPtr ptr == nullPtr
+      then Nothing
+      else Just res
+
+-- | Clips a large list of items
+--
+-- The requirements on @a@ are that they are all of the same height.
+withListClipper :: (ClipItems t a, MonadUnliftIO m) => Maybe Float -> t a -> (a -> m ()) -> m ()
+withListClipper itemHeight items action =
+  bracket
+    (liftIO $ throwIfNull "withListClipper: ListClipper allocation failed" Raw.ListClipper.new)
+    Raw.ListClipper.delete
+    step
+  where
+    itemHeight' = maybe (-1.0) CFloat itemHeight
+    itemCount' = maybe maxBound fromIntegral (itemCount items)
+
+    step clipper = do
+      Raw.ListClipper.begin clipper itemCount' itemHeight'
+      go clipper
+
+    go clipper = do
+      doStep <- Raw.ListClipper.step clipper
+      when doStep do
+        let
+          startIndex = fromIntegral $ Raw.ListClipper.displayStart clipper
+          endIndex   = fromIntegral $ Raw.ListClipper.displayEnd clipper
+        stepItems action $
+          clipItems startIndex endIndex items
+
+        go clipper
+
+-- | Containers usable with 'ListClipper'.
+class ClipItems t a where
+  itemCount :: t a -> Maybe Int
+  clipItems :: Int -> Int -> t a -> t a
+  stepItems :: Monad m => (a -> m ()) -> t a -> m ()
+
+-- | Unbounded stream of items.
+instance ClipItems [] a where
+  itemCount = const Nothing
+
+  clipItems displayStart displayEnd =
+    take (displayEnd - displayStart) . drop displayStart
+
+  stepItems = mapM_
+
+instance ClipItems V.Vector a where
+  itemCount = Just . V.length
+
+  clipItems displayStart displayEnd =
+    V.slice displayStart (displayEnd - displayStart)
+
+  stepItems = V.mapM_
+
+instance Storable a => ClipItems VS.Vector a where
+  itemCount = Just . VS.length
+
+  clipItems displayStart displayEnd =
+    VS.slice displayStart (displayEnd - displayStart)
+
+  stepItems = VS.mapM_
+
+instance VU.Unbox a => ClipItems VU.Vector a where
+  itemCount = Just . VU.length
+
+  clipItems displayStart displayEnd =
+    VU.slice displayStart (displayEnd - displayStart)
+
+  stepItems = VU.mapM_
+
+-- | ClipList helper for arbitrary unmaterialized ranges.
+data ClipRange a = ClipRange a a
+  deriving (Eq, Ord, Show)
+
+instance (Ord a, Enum a, Num a) => ClipItems ClipRange a where
+  itemCount (ClipRange _begin end) =
+    Just $ fromEnum end
+
+  clipItems clipBegin clipEnd (ClipRange oldBegin oldEnd) =
+    ClipRange
+      (toEnum $ max clipBegin $ fromEnum oldBegin)
+      (toEnum $ min clipEnd $ fromEnum oldEnd)
+
+  stepItems action (ClipRange start end) =
+    mapM_ action [start .. end - 1]
--- a/src/DearImGui/Context.hs
+++ b/src/DearImGui/Context.hs
@ -33,5 +33,10 @@ imguiContext = mempty
      [ ( TypeName "ImVec2", [t| ImVec2 |] )
      , ( TypeName "ImVec3", [t| ImVec3 |] )
      , ( TypeName "ImVec4", [t| ImVec4 |] )
+      , ( TypeName "ImU32", [t| ImU32 |] )
+      , ( TypeName "ImDrawList", [t| ImDrawList |] )
+      , ( TypeName "ImGuiContext", [t| ImGuiContext |] )
+      , ( TypeName "ImFont", [t| ImFont |] )
+      , ( TypeName "ImGuiListClipper", [t| ImGuiListClipper |] )
      ]
  }
--- a/src/DearImGui/GLFW.hs
+++ b/src/DearImGui/GLFW.hs
@ -19,9 +19,33 @@ module DearImGui.GLFW (
    -- ** GLFW
    glfwNewFrame
  , glfwShutdown
+
+    -- $callbacks
+  , glfwWindowFocusCallback
+  , glfwCursorEnterCallback
+  , glfwMouseButtonCallback
+  , glfwScrollCallback
+  , glfwKeyCallback
+  , glfwCharCallback
+  , glfwMonitorCallback
  )
  where

+-- base
+import Foreign
+  ( Ptr, castPtr )
+import Foreign.C.Types
+  ( CInt, CDouble, CUInt )
+import Unsafe.Coerce (unsafeCoerce)
+
+-- bindings-GLFW
+import Bindings.GLFW
+  ( C'GLFWmonitor, C'GLFWwindow )
+
+-- GLFW-b
+import Graphics.UI.GLFW
+  ( Monitor, Window )
+
 -- inline-c
 import qualified Language.C.Inline as C

@ -44,8 +68,121 @@ glfwNewFrame :: MonadIO m => m ()
 glfwNewFrame = liftIO do
  [C.exp| void { ImGui_ImplGlfw_NewFrame(); } |]

+-- $callbacks
+-- == GLFW callbacks
+-- * When calling Init with @install_callbacks=true@:
+--   GLFW callbacks will be installed for you.
+--   They will call user's previously installed callbacks, if any.
+-- * When calling Init with @install_callbacks=false@:
+--   GLFW callbacks won't be installed.
+--   You will need to call those function yourself from your own GLFW callbacks.

 -- | Wraps @ImGui_ImplGlfw_Shutdown@.
 glfwShutdown :: MonadIO m => m ()
 glfwShutdown = liftIO do
  [C.exp| void { ImGui_ImplGlfw_Shutdown(); } |]
+
+glfwWindowFocusCallback :: MonadIO m => Window -> CInt -> m ()
+glfwWindowFocusCallback window focused = liftIO do
+  [C.exp| void {
+    ImGui_ImplGlfw_WindowFocusCallback(
+      static_cast<GLFWwindow *>(
+        $(void * windowPtr)
+      ),
+      $(int focused)
+    );
+  } |]
+  where
+    windowPtr = castPtr $ unWindow window
+
+glfwCursorEnterCallback :: MonadIO m => Window -> CInt -> m ()
+glfwCursorEnterCallback window entered = liftIO do
+  [C.exp| void {
+    ImGui_ImplGlfw_CursorEnterCallback(
+      static_cast<GLFWwindow *>(
+        $(void * windowPtr)
+      ),
+      $(int entered)
+    );
+  } |]
+  where
+    windowPtr = castPtr $ unWindow window
+
+glfwMouseButtonCallback :: MonadIO m => Window -> CInt -> CInt -> CInt -> m ()
+glfwMouseButtonCallback window button action mods = liftIO do
+  [C.exp| void {
+    ImGui_ImplGlfw_MouseButtonCallback(
+      static_cast<GLFWwindow *>(
+        $(void * windowPtr)
+      ),
+      $(int button),
+      $(int action),
+      $(int mods)
+    );
+  } |]
+  where
+    windowPtr = castPtr $ unWindow window
+
+glfwScrollCallback :: MonadIO m => Window -> CDouble -> CDouble -> m ()
+glfwScrollCallback window xoffset yoffset = liftIO do
+  [C.exp| void {
+    ImGui_ImplGlfw_ScrollCallback(
+      static_cast<GLFWwindow *>(
+        $(void * windowPtr)
+      ),
+      $(double xoffset),
+      $(double yoffset)
+    );
+  } |]
+  where
+    windowPtr = castPtr $ unWindow window
+
+glfwKeyCallback :: MonadIO m => Window -> CInt -> CInt -> CInt -> CInt -> m ()
+glfwKeyCallback window key scancode action mods = liftIO do
+  [C.exp| void {
+    ImGui_ImplGlfw_KeyCallback(
+      static_cast<GLFWwindow *>(
+        $(void * windowPtr)
+      ),
+      $(int key),
+      $(int scancode),
+      $(int action),
+      $(int mods)
+    );
+  } |]
+  where
+    windowPtr = castPtr $ unWindow window
+
+glfwCharCallback :: MonadIO m => Window -> CUInt -> m ()
+glfwCharCallback window c = liftIO do
+  [C.exp| void {
+    ImGui_ImplGlfw_CharCallback(
+      static_cast<GLFWwindow *>(
+        $(void * windowPtr)
+      ),
+      $(unsigned int c)
+    );
+  } |]
+  where
+    windowPtr = castPtr $ unWindow window
+
+glfwMonitorCallback :: MonadIO m => Monitor -> CInt -> m ()
+glfwMonitorCallback monitor event = liftIO do
+  [C.exp| void {
+    ImGui_ImplGlfw_MonitorCallback(
+      static_cast<GLFWmonitor *>(
+        $(void * monitorPtr)
+      ),
+      $(int event)
+    );
+  } |]
+  where
+    monitorPtr = castPtr $ unMonitor monitor
+
+-- | Strip the unpublished newtype wrapper.
+unWindow :: Window -> Ptr C'GLFWwindow
+unWindow = unsafeCoerce
+
+-- | Strip the unpublished newtype wrapper.
+unMonitor :: Monitor -> Ptr C'GLFWmonitor
+unMonitor = unsafeCoerce
--- a/src/DearImGui/Raw.hs
+++ b/src/DearImGui/Raw.hs
@ -7,6 +7,7 @@
 {-# LANGUAGE PatternSynonyms #-}
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE ViewPatterns #-}

 {-|
 Module: DearImGui
@ -19,6 +20,8 @@ module DearImGui.Raw
    Context(..)
  , createContext
  , destroyContext
+  , getCurrentContext
+  , setCurrentContext

    -- * Main
  , newFrame
@ -43,6 +46,17 @@ module DearImGui.Raw
    -- * Windows
  , begin
  , end
+
+    -- ** Utilities
+
+  , getWindowDrawList
+  , getWindowPos
+  , getWindowSize
+  , getWindowWidth
+  , getWindowHeight
+
+    -- ** Manipulation
+
  , setNextWindowPos
  , setNextWindowSize
  , setNextWindowFullscreen
@ -51,8 +65,9 @@ module DearImGui.Raw
  , setNextWindowCollapsed
  , setNextWindowBgAlpha

-    -- * Child Windows
+    -- ** Child Windows
  , beginChild
+  , beginChildContext
  , endChild

    -- * Parameter stacks
@ -75,6 +90,7 @@ module DearImGui.Raw
  , beginGroup
  , endGroup
  , setCursorPos
+  , getCursorScreenPos
  , alignTextToFramePadding

    -- * Widgets
@ -89,7 +105,10 @@ module DearImGui.Raw
    -- ** Main
  , button
  , smallButton
+  , invisibleButton
  , arrowButton
+  , image
+  , imageButton
  , checkbox
  , progressBar
  , bullet
@ -131,6 +150,8 @@ module DearImGui.Raw

    -- ** Text Input
  , inputText
+  , inputTextMultiline
+  , inputTextWithHint

    -- * Color Editor/Picker
  , colorPicker3
@ -178,11 +199,33 @@ module DearImGui.Raw
  , openPopup
  , closeCurrentPopup

+    -- * ID stack/scopes
+  , pushIDInt
+  , pushIDPtr
+  , pushIDStr
+  , pushIDStrLen
+  , popID
+
    -- * Item/Widgets Utilities
  , isItemHovered
  , wantCaptureMouse
  , wantCaptureKeyboard

+    -- * Fonts in default font atlas
+  , Font(..)
+  , addFontDefault
+  , addFontFromFileTTF
+  , addFontFromMemoryTTF
+  , buildFontAtlas
+  , clearFontAtlas
+
+    -- * Utilities
+
+    -- ** Miscellaneous
+  , getBackgroundDrawList
+  , getForegroundDrawList
+  , imCol32
+
    -- * Types
  , module DearImGui.Enums
  , module DearImGui.Structs
@ -194,12 +237,15 @@ import Control.Monad.IO.Class
  ( MonadIO, liftIO )
 import Foreign
 import Foreign.C
+import System.IO.Unsafe
+  ( unsafePerformIO )

 -- dear-imgui
 import DearImGui.Context
  ( imguiContext )
 import DearImGui.Enums
 import DearImGui.Structs
+import DearImGui.Raw.DrawList (DrawList(..))

 -- inline-c
 import qualified Language.C.Inline as C
@ -213,19 +259,30 @@ Cpp.using "namespace ImGui"


 -- | Wraps @ImGuiContext*@.
-newtype Context = Context (Ptr ())
+newtype Context = Context (Ptr ImGuiContext)


 -- | Wraps @ImGui::CreateContext()@.
 createContext :: (MonadIO m) => m Context
 createContext = liftIO do
-  Context <$> [C.exp| void* { CreateContext() } |]
+  Context <$> [C.exp| ImGuiContext* { CreateContext() } |]


 -- | Wraps @ImGui::DestroyContext()@.
 destroyContext :: (MonadIO m) => Context -> m ()
 destroyContext (Context contextPtr) = liftIO do
-  [C.exp| void { DestroyContext((ImGuiContext*)$(void* contextPtr)); } |]
+  [C.exp| void { DestroyContext($(ImGuiContext* contextPtr)); } |]
+
+-- | Wraps @ImGui::GetCurrentContext()@.
+getCurrentContext :: MonadIO m => m Context
+getCurrentContext = liftIO do
+  Context <$> [C.exp| ImGuiContext* { GetCurrentContext() } |]
+
+
+-- | Wraps @ImGui::SetCurrentContext()@.
+setCurrentContext :: MonadIO m => Context -> m ()
+setCurrentContext (Context contextPtr) = liftIO do
+  [C.exp| void { SetCurrentContext($(ImGuiContext* contextPtr)) } |]


 -- | Start a new Dear ImGui frame, you can submit any command from this point
@ -339,10 +396,14 @@ styleColorsClassic = liftIO do
 --
 -- Passing non-null @Ptr CBool@ shows a window-closing widget in the upper-right corner of the window,
 -- wich clicking will set the boolean to false when clicked.
-begin :: (MonadIO m) => CString -> Ptr CBool -> ImGuiWindowFlags -> m Bool
-begin namePtr openPtr flags = liftIO do
+begin :: (MonadIO m) => CString -> Maybe (Ptr CBool) -> Maybe (ImGuiWindowFlags) -> m Bool
+begin namePtr (Just openPtr) (Just flags) = liftIO do
  (0 /=) <$> [C.exp| bool { Begin($(char* namePtr), $(bool* openPtr), $(ImGuiWindowFlags flags)) } |]
-
+begin namePtr (Just openPtr) Nothing = liftIO do
+  (0 /=) <$> [C.exp| bool { Begin($(char* namePtr), $(bool* openPtr)) } |]
+begin namePtr Nothing Nothing = liftIO do
+  (0 /=) <$> [C.exp| bool { Begin($(char* namePtr)) } |]
+begin _ Nothing _ = error "C++ default argument restriction."

 -- | Pop window from the stack.
 --
@ -352,11 +413,47 @@ end = liftIO do
  [C.exp| void { End(); } |]


-- | Wraps @ImGui::BeginChild()@.
-beginChild :: (MonadIO m) => CString -> m Bool
-beginChild namePtr = liftIO do
-  (0 /=) <$> [C.exp| bool { BeginChild($(char* namePtr)) } |]
+-- | Begin a self-contained independent scrolling/clipping regions within a host window.
+--
+-- Child windows can embed their own child.
+--
+-- For each independent axis of @size@:
+--   * ==0.0f: use remaining host window size
+--   * >0.0f: fixed size
+--   * <0.0f: use remaining window size minus abs(size)
+--
+-- Each axis can use a different mode, e.g. @ImVec2 0 400@.
+--
+-- @BeginChild()@ returns `False` to indicate the window is collapsed or fully clipped, so you may early out and omit submitting anything to the window.
+--
+-- Always call a matching `endChild` for each `beginChild` call, regardless of its return value.
+--
+-- Wraps @ImGui::BeginChild()@.
+beginChild :: (MonadIO m) => CString -> Ptr ImVec2 -> CBool -> ImGuiWindowFlags -> m Bool
+beginChild namePtr sizePtr border flags = liftIO do
+  (0 /=) <$> [C.exp|
+    bool {
+      BeginChild(
+        $(char* namePtr),
+        *$(ImVec2* sizePtr),
+        $(bool border),
+        $(ImGuiWindowFlags flags)
+      )
+    }
+  |]

+-- | Switch context to another child window by its ID
+--
+-- Wraps @ImGui::BeginChild()@.
+beginChildContext :: (MonadIO m) => CString -> m Bool
+beginChildContext namePtr = liftIO do
+  (0 /=) <$> [C.exp|
+    bool {
+      BeginChild(
+        $(char* namePtr)
+      )
+    }
+  |]

 -- | Wraps @ImGui::EndChild()@.
 endChild :: (MonadIO m) => m ()
@ -387,9 +484,11 @@ sameLine = liftIO do
 --   B) it's faster, no memory copy is done, no buffer size limits, recommended for long chunks of text.
 --
 -- Wraps @ImGui::TextUnformatted()@.
-textUnformatted :: (MonadIO m) => CString -> CString -> m ()
-textUnformatted textPtr textEndPtr = liftIO do
+textUnformatted :: (MonadIO m) => CString -> Maybe CString -> m ()
+textUnformatted textPtr (Just textEndPtr) = liftIO do
  [C.exp| void { TextUnformatted($(char* textPtr), $(char* textEndPtr)) } |]
+textUnformatted textPtr Nothing = liftIO do
+  [C.exp| void { TextUnformatted($(char* textPtr)) } |]

 -- | Shortcut for @PushStyleColor(ImGuiCol_Text, col); Text(fmt, ...); PopStyleColor();@.
 --
@ -455,6 +554,24 @@ smallButton labelPtr = liftIO do
  (0 /=) <$> [C.exp| bool { SmallButton($(char* labelPtr)) } |]


+-- | Flexible button behavior without the visuals.
+--
+-- Frequently useful to build custom behaviors using the public api
+-- (along with IsItemActive, IsItemHovered, etc).
+--
+-- Wraps @ImGui::InvisibleButton()@.
+invisibleButton :: (MonadIO m) => CString -> Ptr ImVec2 -> ImGuiButtonFlags -> m Bool
+invisibleButton labelPtr size flags = liftIO do
+  (0 /=) <$> [C.exp|
+    bool {
+      InvisibleButton(
+        $(char* labelPtr),
+        *$(ImVec2* size),
+        $(ImGuiButtonFlags flags)
+      )
+    }
+  |]
+
 -- | Square button with an arrow shape.
 --
 -- Wraps @ImGui::ArrowButton()@.
@ -463,6 +580,50 @@ arrowButton strIdPtr dir = liftIO do
  (0 /=) <$> [C.exp| bool { ArrowButton($(char* strIdPtr), $(ImGuiDir dir)) } |]


+-- | Image Area to draw a texture.
+--
+-- For OpenGL: The @userTextureIDPtr@ points to the texture memory (eg. @0x0000000000000001@)
+--
+-- See @examples/sdl/Image.hs@ for the whole process.
+--
+-- Wraps @ImGui::Image()@.
+image :: (MonadIO m) => Ptr () -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec4 -> Ptr ImVec4 -> m ()
+image userTextureIDPtr sizePtr uv0Ptr uv1Ptr tintColPtr borderColPtr = liftIO do
+  [C.exp|
+    void {
+      Image(
+        $(void* userTextureIDPtr),
+        *$(ImVec2* sizePtr),
+        *$(ImVec2* uv0Ptr),
+        *$(ImVec2* uv1Ptr),
+        *$(ImVec4* tintColPtr),
+        *$(ImVec4* borderColPtr)
+      )
+    }
+  |]
+
+-- | Clickable Image Area.
+--
+-- Negative @frame_padding@ uses default frame padding settings. Set to 0 for no padding.
+--
+-- Wraps @ImGui::ImageButton()@.
+imageButton :: (MonadIO m) => Ptr () -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> CInt -> Ptr ImVec4 -> Ptr ImVec4 -> m Bool
+imageButton userTextureIDPtr sizePtr uv0Ptr uv1Ptr framePadding bgColPtr tintColPtr = liftIO do
+  (0 /=) <$> [C.exp|
+    bool {
+      ImageButton(
+        $(void* userTextureIDPtr),
+        *$(ImVec2* sizePtr),
+        *$(ImVec2* uv0Ptr),
+        *$(ImVec2* uv1Ptr),
+        $(int framePadding),
+        *$(ImVec4* bgColPtr),
+        *$(ImVec4* tintColPtr)
+      )
+    }
+  |]
+
+
 -- | Wraps @ImGui::Checkbox()@.
 checkbox :: (MonadIO m) => CString -> Ptr CBool -> m Bool
 checkbox labelPtr boolPtr = liftIO do
@ -850,10 +1011,50 @@ vSliderScalar labelPtr sizePtr dataType dataPtr minPtr maxPtr formatPtr flags =
    minPtr_ = castPtr minPtr
    maxPtr_ = castPtr maxPtr

+
 -- | Wraps @ImGui::InputText()@.
-inputText :: (MonadIO m) => CString -> CString -> CInt -> m Bool
-inputText descPtr refPtr refSize = liftIO do
-  (0 /= ) <$> [C.exp| bool { InputText( $(char* descPtr), $(char* refPtr), $(int refSize) ) } |]
+inputText :: (MonadIO m) => CString -> CStringLen -> ImGuiInputTextFlags -> m Bool
+inputText labelPtr (bufPtr, fromIntegral -> bufSize) flags = liftIO do
+  (0 /= ) <$> [C.exp|
+    bool {
+      InputText(
+        $(char* labelPtr),
+        $(char* bufPtr),
+        $(int bufSize),
+        $(ImGuiInputTextFlags flags)
+      )
+    }
+  |]
+
+-- | Wraps @ImGui::InputTextMultiline()@.
+inputTextMultiline :: (MonadIO m) => CString -> CStringLen -> Ptr ImVec2 -> ImGuiInputTextFlags -> m Bool
+inputTextMultiline labelPtr (bufPtr, fromIntegral -> bufSize) sizePtr flags = liftIO do
+  (0 /= ) <$> [C.exp|
+    bool {
+      InputTextMultiline(
+        $(char* labelPtr),
+        $(char* bufPtr),
+        $(size_t bufSize),
+        *$(ImVec2* sizePtr),
+        $(ImGuiInputTextFlags flags)
+      )
+    }
+  |]
+
+-- | Wraps @ImGui::InputTextWithHint()@.
+inputTextWithHint :: (MonadIO m) => CString -> CString -> CStringLen -> ImGuiInputTextFlags -> m Bool
+inputTextWithHint labelPtr hintPtr (bufPtr, fromIntegral -> bufSize) flags = liftIO do
+  (0 /= ) <$> [C.exp|
+    bool {
+      InputTextWithHint(
+        $(char* labelPtr),
+        $(char* hintPtr),
+        $(char* bufPtr),
+        $(int bufSize),
+        $(ImGuiInputTextFlags flags)
+      )
+    }
+  |]


 -- | Wraps @ImGui::ColorPicker3()@.
@ -1076,12 +1277,52 @@ isItemHovered = liftIO do
  (0 /=) <$> [C.exp| bool { IsItemHovered() } |]


+-- | Get draw list associated to the current window.
+getWindowDrawList :: (MonadIO m) => m DrawList
+getWindowDrawList = liftIO do
+  DrawList <$> [C.exp|
+    ImDrawList* {
+      GetWindowDrawList()
+    }
+  |]
+
+-- | Get current window position in screen space.
+--
+-- Useful if you want to do your own drawing via the "DrawList" API.
+getWindowPos :: (MonadIO m) => m ImVec2
+getWindowPos = liftIO do
+  C.withPtr_ \ptr ->
+    [C.block|
+      void {
+        *$(ImVec2 * ptr) = GetWindowPos();
+      }
+    |]
+
+getWindowSize :: (MonadIO m) => m ImVec2
+getWindowSize = liftIO do
+  C.withPtr_ \ptr ->
+    [C.block|
+      void {
+        *$(ImVec2 * ptr) = GetWindowSize();
+      }
+    |]
+
+getWindowWidth :: (MonadIO m) => m CFloat
+getWindowWidth = liftIO do
+  [C.exp| float { GetWindowWidth() } |]
+
+getWindowHeight :: (MonadIO m) => m CFloat
+getWindowHeight = liftIO do
+  [C.exp| float { GetWindowHeight() } |]
+
 -- | Set next window position. Call before `begin` Use pivot=(0.5,0.5) to center on given point, etc.
 --
 -- Wraps @ImGui::SetNextWindowPos()@
-setNextWindowPos :: (MonadIO m) => Ptr ImVec2 -> ImGuiCond -> Ptr ImVec2 -> m ()
-setNextWindowPos posPtr cond pivotPtr = liftIO do
+setNextWindowPos :: (MonadIO m) => Ptr ImVec2 -> ImGuiCond -> Maybe (Ptr ImVec2) -> m ()
+setNextWindowPos posPtr cond (Just pivotPtr) = liftIO do
  [C.exp| void { SetNextWindowPos(*$(ImVec2* posPtr), $(ImGuiCond cond), *$(ImVec2* pivotPtr)) } |]
+setNextWindowPos posPtr cond Nothing = liftIO do
+  [C.exp| void { SetNextWindowPos(*$(ImVec2* posPtr), $(ImGuiCond cond)) } |]


 -- | Set next window size. Call before `begin`
@ -1229,6 +1470,21 @@ setCursorPos :: (MonadIO m) => Ptr ImVec2 -> m ()
 setCursorPos posPtr = liftIO do
  [C.exp| void { SetCursorPos(*$(ImVec2* posPtr)) } |]

+-- | Cursor position in absolute coordinates.
+--
+-- Useful to work with 'DrawList' API.
+--
+-- Generally top-left == @GetMainViewport()->Pos == (0,0)@ in single viewport mode,
+-- and bottom-right == @GetMainViewport()->Pos+Size == io.DisplaySize@ in single-viewport mode.
+getCursorScreenPos :: (MonadIO m) => m ImVec2
+getCursorScreenPos = liftIO do
+  C.withPtr_ \ptr ->
+    [C.block|
+      void {
+        *$(ImVec2 * ptr) = GetCursorScreenPos();
+      }
+    |]
+

 -- | Modify a style color by pushing to the shared stack. always use this if you modify the style after `newFrame`
 --
@ -1261,6 +1517,44 @@ popStyleVar :: (MonadIO m) => CInt -> m ()
 popStyleVar n = liftIO do
  [C.exp| void { PopStyleVar($(int n)) } |]

+
+-- | Push integer into the ID stack (will hash int).
+--
+-- Wraps @ImGui::PushId@
+pushIDInt :: (MonadIO m) => CInt -> m ()
+pushIDInt intId = liftIO do
+  [C.exp| void { PushID($(int intId)) } |]
+
+-- | Push pointer into the ID stack (will hash pointer).
+--
+-- Wraps @ImGui::PushId@
+pushIDPtr :: (MonadIO m) => Ptr a -> m ()
+pushIDPtr ptr = liftIO do
+  [C.exp| void { PushID($(void * ptr_)) } |]
+  where
+    ptr_ = castPtr ptr
+
+-- | Push string into the ID stack (will hash string).
+--
+-- Wraps @ImGui::PushId@
+pushIDStr :: (MonadIO m) => CString -> m ()
+pushIDStr strId = liftIO do
+  [C.exp| void { PushID($(char * strId)) } |]
+
+-- | Push string into the ID stack (will hash string).
+--
+-- Wraps @ImGui::PushId@
+pushIDStrLen :: (MonadIO m) => CStringLen -> m ()
+pushIDStrLen (strBegin, strLen) = liftIO do
+  [C.exp| void { PushID($(char * strBegin), $(char * strEnd)) } |]
+  where
+    strEnd = plusPtr strBegin strLen
+
+popID :: (MonadIO m) => m ()
+popID = liftIO do
+  [C.exp| void { PopID() } |]
+
+
 wantCaptureMouse :: MonadIO m => m Bool
 wantCaptureMouse = liftIO do
  (0 /=) <$> [C.exp| bool { GetIO().WantCaptureMouse } |]
@ -1268,3 +1562,93 @@ wantCaptureMouse = liftIO do
 wantCaptureKeyboard :: MonadIO m => m Bool
 wantCaptureKeyboard = liftIO do
  (0 /=) <$> [C.exp| bool { GetIO().WantCaptureKeyboard } |]
+
+
+-- | Wraps @ImFont*@.
+newtype Font = Font (Ptr ImFont)
+
+addFontDefault :: MonadIO m => m Font
+addFontDefault = liftIO do
+  Font <$> [C.block|
+    ImFont* {
+      return GetIO().Fonts->AddFontDefault();
+    }
+  |]
+
+addFontFromFileTTF :: MonadIO m => CString -> CFloat -> m Font
+addFontFromFileTTF filenamePtr sizePixels = liftIO do
+  Font <$> [C.block|
+    ImFont* {
+      return GetIO().Fonts->AddFontFromFileTTF(
+        $(char* filenamePtr),
+        $(float sizePixels));
+    }
+  |]
+
+-- | Transfer a buffer with TTF data to font atlas builder.
+addFontFromMemoryTTF :: MonadIO m => CStringLen -> CFloat -> m Font
+addFontFromMemoryTTF (castPtr -> fontDataPtr, fromIntegral -> fontSize) sizePixels = liftIO do
+  Font <$> [C.block|
+    ImFont* {
+      return GetIO().Fonts->AddFontFromMemoryTTF(
+        $(void* fontDataPtr),
+        $(int fontSize),
+        $(float sizePixels)
+      );
+    }
+  |]
+
+buildFontAtlas :: MonadIO m => m ()
+buildFontAtlas = liftIO do
+  [C.block|
+    void {
+      GetIO().Fonts->Build();
+    }
+  |]
+
+clearFontAtlas :: MonadIO m => m ()
+clearFontAtlas = liftIO do
+  [C.block|
+    void {
+      GetIO().Fonts->Clear();
+    }
+  |]
+
+
+-- | This draw list will be the first rendering one.
+--
+-- Useful to quickly draw shapes/text behind dear imgui contents.
+getBackgroundDrawList :: (MonadIO m) => m DrawList
+getBackgroundDrawList = liftIO do
+  DrawList <$> [C.exp|
+    ImDrawList* {
+      GetBackgroundDrawList()
+    }
+  |]
+
+--  | This draw list will be the last rendered one.
+--
+-- Useful to quickly draw shapes/text over dear imgui contents.
+getForegroundDrawList :: (MonadIO m) => m DrawList
+getForegroundDrawList = liftIO do
+  DrawList <$> [C.exp|
+    ImDrawList* {
+      GetForegroundDrawList()
+    }
+  |]
+
+-- | Generate 32-bit encoded colors using DearImgui macros.
+--
+-- Follows @IMGUI_USE_BGRA_PACKED_COLOR@ define to put bytes in appropriate positions.
+imCol32 :: CUChar -> CUChar -> CUChar -> CUChar -> ImU32
+imCol32 r g b a = unsafePerformIO
+  [C.exp|
+    ImU32 {
+      IM_COL32(
+        $(unsigned char r),
+        $(unsigned char g),
+        $(unsigned char b),
+        $(unsigned char a)
+      )
+    }
+  |]
--- a/src/DearImGui/Raw/DrawList.hs
+++ b/src/DearImGui/Raw/DrawList.hs
@ -0,0 +1,742 @@
+{-# LANGUAGE BlockArguments #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE PatternSynonyms #-}
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE ViewPatterns #-}
+
+{-| Draw command list
+
+This is the low-level list of polygons that ImGui functions are filling.
+
+At the end of the frame, all command lists are passed to your @ImGuiIO::RenderDrawListFn@ function for rendering.
+
+Each dear imgui window contains its own ImDrawList.
+
+You can use 'getWindowDrawList' to access the current window draw list and draw custom primitives.
+
+You can interleave normal ImGui calls and adding primitives to the current draw list.
+
+In single viewport mode, top-left is == @GetMainViewport()->Pos@ (generally @0,0@),
+bottom-right is == @GetMainViewport()->Pos+Size@ (generally io.DisplaySize).
+
+You are totally free to apply whatever transformation matrix to want to the data
+(depending on the use of the transformation you may want to apply it to ClipRect as well!).
+
+__Important__: Primitives are always added to the list and not culled (culling is done at higher-level by ImGui functions),
+if you use this API a lot consider coarse culling your drawn objects.
+-}
+
+module DearImGui.Raw.DrawList
+  ( DrawList(..)
+  , new
+  , destroy
+
+    -- * Primitives
+
+    -- $primitives
+  , addLine
+
+  , addRect
+  , addRectFilled
+  , addRectFilledMultiColor
+
+  , addQuad
+  , addQuadFilled
+
+  , addTriangle
+  , addTriangleFilled
+
+  , addCircle
+  , addCircleFilled
+
+  , addNgon
+  , addNgonFilled
+
+  , addText_
+  , addText
+
+  , addPolyLine
+  , addConvexPolyFilled
+
+  , addBezierCubic
+  , addBezierQuadratic
+
+    -- ** Image primitives
+
+    -- $image
+  , addImage
+  , addImageQuad
+  , addImageRounded
+
+    -- * Stateful path API
+
+    -- $stateful
+  , pathClear
+  , pathLineTo
+  , pathLineToMergeDuplicate
+  , pathFillConvex
+  , pathStroke
+
+  , pathArcTo
+  , pathArcToFast
+
+  , pathBezierCubicCurveTo
+  , pathBezierQuadraticCurveTo
+
+  , pathRect
+
+    -- * Advanced
+
+  -- , addCallback
+  , addDrawCmd
+  , cloneOutput
+
+    -- * Internal state
+
+  , pushClipRect
+  , pushClipRectFullScreen
+  , popClipRect
+  , getClipRectMin
+  , getClipRectMax
+
+  , pushTextureID
+  , popTextureID
+  )
+  where
+
+import Control.Monad.IO.Class
+  ( MonadIO, liftIO )
+import Foreign hiding (new)
+import Foreign.C
+
+-- dear-imgui
+import DearImGui.Context
+  ( imguiContext )
+import DearImGui.Enums
+import DearImGui.Structs
+
+-- inline-c
+import qualified Language.C.Inline as C
+
+-- inline-c-cpp
+import qualified Language.C.Inline.Cpp as Cpp
+
+C.context (Cpp.cppCtx <> C.bsCtx <> imguiContext)
+C.include "imgui.h"
+Cpp.using "namespace ImGui"
+
+-- | A single draw command list.
+-- Generally one per window, conceptually you may see this as a dynamic "mesh" builder.
+newtype DrawList = DrawList (Ptr ImDrawList)
+
+new :: MonadIO m => m DrawList
+new = liftIO do
+  DrawList <$> [C.block|
+    ImDrawList* {
+      return IM_NEW(ImDrawList(GetDrawListSharedData()));
+    }
+  |]
+
+destroy :: MonadIO m => DrawList -> m ()
+destroy (DrawList drawList) = liftIO do
+  [C.block|
+    void {
+      IM_DELETE($(ImDrawList* drawList));
+    }
+  |]
+
+
+pushClipRect :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> CBool -> m ()
+pushClipRect (DrawList drawList) clip_rect_min clip_rect_max intersect_with_current_clip_rect = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PushClipRect(
+        *$(ImVec2* clip_rect_min),
+        *$(ImVec2* clip_rect_max),
+        $(bool intersect_with_current_clip_rect)
+      );
+    }
+  |]
+
+pushClipRectFullScreen :: MonadIO m => DrawList -> m ()
+pushClipRectFullScreen (DrawList drawList) = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PushClipRectFullScreen();
+    }
+  |]
+
+popClipRect :: MonadIO m => DrawList -> m ()
+popClipRect (DrawList drawList) = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PopClipRect();
+    }
+  |]
+
+
+getClipRectMin :: MonadIO m => DrawList -> m ImVec2
+getClipRectMin (DrawList drawList) = liftIO do
+  C.withPtr_ \ptr ->
+    [C.block|
+      void {
+        *$(ImVec2 * ptr) = $(ImDrawList* drawList)->GetClipRectMin();
+      }
+    |]
+
+getClipRectMax :: MonadIO m => DrawList -> m ImVec2
+getClipRectMax (DrawList drawList) = liftIO do
+  C.withPtr_ \ptr ->
+    [C.block|
+      void {
+        *$(ImVec2 * ptr) = $(ImDrawList* drawList)->GetClipRectMax();
+      }
+    |]
+
+
+pushTextureID :: MonadIO m => DrawList -> Ptr () -> m ()
+pushTextureID (DrawList drawList) userTextureIDPtr = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PushTextureID(
+        $(void* userTextureIDPtr)
+      );
+    }
+  |]
+
+popTextureID :: MonadIO m => DrawList -> m ()
+popTextureID (DrawList drawList) = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PopTextureID();
+    }
+  |]
+
+
+{- $primitives
+- For rectangular primitives, @p_min@ and @p_max@ represent the upper-left and lower-right corners.
+- For circle primitives, use @num_segments == 0@ to automatically calculate tessellation (preferred).
+  In older versions (until Dear ImGui 1.77) the 'addCircle' functions defaulted to num_segments == 12.
+  In future versions we will use textures to provide cheaper and higher-quality circles.
+  Use 'addNgon' and 'addNgonFilled' functions if you need to guaranteed a specific number of sides.
+-}
+
+addLine :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> ImU32 -> CFloat -> m ()
+addLine (DrawList drawList) p1 p2 col thickness = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddLine(
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        $(ImU32 col),
+        $(float thickness)
+      );
+    }
+  |]
+
+
+addRect :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> ImU32 -> CFloat -> ImDrawFlags -> CFloat -> m ()
+addRect (DrawList drawList) p_min p_max col rounding flags thickness = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddRect(
+        *$(ImVec2* p_min),
+        *$(ImVec2* p_max),
+        $(ImU32 col),
+        $(float rounding),
+        $(ImDrawFlags flags),
+        $(float thickness)
+      );
+    }
+  |]
+
+addRectFilled :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> ImU32 -> CFloat -> ImDrawFlags -> m ()
+addRectFilled (DrawList drawList) p_min p_max col rounding flags = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddRectFilled(
+        *$(ImVec2* p_min),
+        *$(ImVec2* p_max),
+        $(ImU32 col),
+        $(float rounding),
+        $(ImDrawFlags flags)
+      );
+    }
+  |]
+
+addRectFilledMultiColor :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> ImU32 -> ImU32 -> ImU32 -> ImU32 -> m ()
+addRectFilledMultiColor (DrawList drawList) p_min p_max col_upr_left col_upr_right col_bot_right col_bot_left = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddRectFilledMultiColor(
+        *$(ImVec2* p_min),
+        *$(ImVec2* p_max),
+        $(ImU32 col_upr_left),
+        $(ImU32 col_upr_right),
+        $(ImU32 col_bot_right),
+        $(ImU32 col_bot_left)
+      );
+    }
+  |]
+
+
+addQuad :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> ImU32 -> CFloat -> m ()
+addQuad (DrawList drawList) p1 p2 p3 p4 col thickness = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddQuad(
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        *$(ImVec2* p3),
+        *$(ImVec2* p4),
+        $(ImU32 col),
+        $(float thickness)
+      );
+    }
+  |]
+
+addQuadFilled :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> ImU32 -> m ()
+addQuadFilled (DrawList drawList) p1 p2 p3 p4 col = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddQuadFilled(
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        *$(ImVec2* p3),
+        *$(ImVec2* p4),
+        $(ImU32 col)
+      );
+    }
+  |]
+
+
+addTriangle :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> ImU32 -> CFloat -> m ()
+addTriangle (DrawList drawList) p1 p2 p3 col thickness = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddTriangle(
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        *$(ImVec2* p3),
+        $(ImU32 col),
+        $(float thickness)
+      );
+    }
+  |]
+
+addTriangleFilled :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> ImU32 -> m ()
+addTriangleFilled (DrawList drawList) p1 p2 p3 col = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddTriangleFilled(
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        *$(ImVec2* p3),
+        $(ImU32 col)
+      );
+    }
+  |]
+
+
+addCircle :: MonadIO m => DrawList -> Ptr ImVec2 -> CFloat -> ImU32 -> CInt -> CFloat -> m ()
+addCircle (DrawList drawList) center radius col num_segments thickness = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddCircle(
+        *$(ImVec2* center),
+        $(float radius),
+        $(ImU32 col),
+        $(int num_segments),
+        $(float thickness)
+      );
+    }
+  |]
+
+addCircleFilled :: MonadIO m => DrawList -> Ptr ImVec2 -> CFloat -> ImU32 -> CInt -> m ()
+addCircleFilled (DrawList drawList) center radius col num_segments = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddCircleFilled(
+        *$(ImVec2* center),
+        $(float radius),
+        $(ImU32 col),
+        $(int num_segments)
+      );
+    }
+  |]
+
+
+addNgon :: MonadIO m => DrawList -> Ptr ImVec2 -> CFloat -> ImU32 -> CInt -> CFloat -> m ()
+addNgon (DrawList drawList) center radius col num_segments thickness = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddNgon(
+        *$(ImVec2* center),
+        $(float radius),
+        $(ImU32 col),
+        $(int num_segments),
+        $(float thickness)
+      );
+    }
+  |]
+
+addNgonFilled :: MonadIO m => DrawList -> Ptr ImVec2 -> CFloat -> ImU32 -> CInt -> m ()
+addNgonFilled (DrawList drawList) center radius col num_segments = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddNgonFilled(
+        *$(ImVec2* center),
+        $(float radius),
+        $(ImU32 col),
+        $(int num_segments)
+      );
+    }
+  |]
+
+
+addText_ :: MonadIO m => DrawList -> Ptr ImVec2 -> ImU32 -> CString -> CString -> m ()
+addText_ (DrawList drawList) pos col text_begin text_end = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddText(
+        *$(ImVec2* pos),
+        $(ImU32 col),
+        $(char* text_begin),
+        $(char* text_end)
+      );
+    }
+  |]
+
+addText :: MonadIO m => DrawList -> Ptr ImFont -> CFloat -> Ptr ImVec2 -> ImU32 -> CString -> CString -> CFloat -> Ptr ImVec4 -> m ()
+addText (DrawList drawList) fontPtr font_size pos col text_begin text_end wrap_width cpu_fine_clip_rect = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddText(
+        $(ImFont* fontPtr),
+        $(float font_size),
+        *$(ImVec2* pos),
+        $(ImU32 col),
+        $(char* text_begin),
+        $(char* text_end),
+        $(float wrap_width),
+        $(ImVec4* cpu_fine_clip_rect)
+      );
+    }
+  |]
+
+
+addPolyLine :: MonadIO m => DrawList -> Ptr ImVec2 -> CInt -> ImU32 -> ImDrawFlags -> CFloat -> m ()
+addPolyLine (DrawList drawList) points num_points col flags thickness = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddPolyline(
+        $(ImVec2* points),
+        $(int num_points),
+        $(ImU32 col),
+        $(ImDrawFlags flags),
+        $(float thickness)
+      );
+    }
+  |]
+
+addConvexPolyFilled :: MonadIO m => DrawList -> Ptr ImVec2 -> CInt -> ImU32 -> m ()
+addConvexPolyFilled (DrawList drawList) points num_points col = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddConvexPolyFilled(
+        $(ImVec2* points),
+        $(int num_points),
+        $(ImU32 col)
+      );
+    }
+  |]
+
+
+addBezierCubic
+  :: MonadIO m
+  => DrawList
+  -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -- Positions (control points)
+  -> ImU32
+  -> CFloat
+  -> CInt
+  -> m ()
+addBezierCubic (DrawList drawList) p1 p2 p3 p4 col thickness numSegments = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddBezierCubic(
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        *$(ImVec2* p3),
+        *$(ImVec2* p4),
+        $(ImU32 col),
+        $(float thickness),
+        $(int numSegments)
+      );
+    }
+  |]
+
+addBezierQuadratic
+  :: MonadIO m
+  => DrawList
+  -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -- Positions (control points)
+  -> ImU32
+  -> CFloat
+  -> CInt
+  -> m ()
+addBezierQuadratic (DrawList drawList) p1 p2 p3 col thickness numSegments = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddBezierQuadratic(
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        *$(ImVec2* p3),
+        $(ImU32 col),
+        $(float thickness),
+        $(int numSegments)
+      );
+    }
+  |]
+
+
+{- $image
+* Read FAQ to understand what @ImTextureID@ is.
+* @p_min@ and @p_max@ represent the upper-left and lower-right corners of the rectangle.
+* @uv_min@ and @uv_max@ represent the normalized texture coordinates to use for those corners.
+  Using @(0,0)->(1,1)@ texture coordinates will generally display the entire texture.
+-}
+
+addImage
+  :: MonadIO m
+  => DrawList
+  -> Ptr ()
+  -> Ptr ImVec2 -> Ptr ImVec2 -- Positions
+  -> Ptr ImVec2 -> Ptr ImVec2 -- UVs
+  -> ImU32
+  -> m ()
+addImage (DrawList drawList) userTextureIDPtr p_min p_max uv_min uv_max col = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddImage(
+        $(void* userTextureIDPtr),
+        *$(ImVec2* p_min),
+        *$(ImVec2* p_max),
+        *$(ImVec2* uv_min),
+        *$(ImVec2* uv_max),
+        $(ImU32 col)
+      );
+    }
+  |]
+
+addImageQuad
+  :: MonadIO m
+  => DrawList
+  -> Ptr ()
+  -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -- Positions
+  -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -> Ptr ImVec2 -- UVs
+  -> ImU32
+  -> m ()
+addImageQuad (DrawList drawList) userTextureIDPtr p1 p2 p3 p4 uv1 uv2 uv3 uv4 col = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddImageQuad(
+        $(void* userTextureIDPtr),
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        *$(ImVec2* p3),
+        *$(ImVec2* p4),
+        *$(ImVec2* uv1),
+        *$(ImVec2* uv2),
+        *$(ImVec2* uv3),
+        *$(ImVec2* uv4),
+        $(ImU32 col)
+      );
+    }
+  |]
+
+addImageRounded
+  :: MonadIO m
+  => DrawList
+  -> Ptr ()
+  -> Ptr ImVec2 -> Ptr ImVec2 -- Positions
+  -> Ptr ImVec2 -> Ptr ImVec2 -- UVs
+  -> ImU32
+  -> CFloat
+  -> ImDrawFlags
+  -> m ()
+addImageRounded (DrawList drawList) userTextureIDPtr p_min p_max uv_min uv_max col rounding flags = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddImageRounded(
+        $(void* userTextureIDPtr),
+        *$(ImVec2* p_min),
+        *$(ImVec2* p_max),
+        *$(ImVec2* uv_min),
+        *$(ImVec2* uv_max),
+        $(ImU32 col),
+        $(float rounding),
+        $(ImDrawFlags flags)
+      );
+    }
+  |]
+
+{- $stateful
+Add points then finish with 'pathFillConvex' or 'pathStroke'.
+-}
+
+pathClear :: MonadIO m => DrawList -> m ()
+pathClear (DrawList drawList) = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathClear();
+    }
+  |]
+
+pathLineTo :: MonadIO m => DrawList -> Ptr ImVec2 -> m ()
+pathLineTo (DrawList drawList) pos = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathLineTo(
+        *$(ImVec2* pos)
+      );
+    }
+  |]
+
+pathLineToMergeDuplicate :: MonadIO m => DrawList -> Ptr ImVec2 -> m ()
+pathLineToMergeDuplicate (DrawList drawList) pos = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathLineToMergeDuplicate(
+        *$(ImVec2* pos)
+      );
+    }
+  |]
+
+-- | Note: Anti-aliased filling requires points to be in clockwise order.
+pathFillConvex :: MonadIO m => DrawList -> ImU32 -> m ()
+pathFillConvex (DrawList drawList) col = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathFillConvex(
+        $(ImU32 col)
+      );
+    }
+  |]
+
+pathStroke :: MonadIO m => DrawList -> ImU32 -> ImDrawFlags -> CFloat -> m ()
+pathStroke (DrawList drawList) col flags thickness = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathStroke(
+        $(ImU32 col),
+        $(ImDrawFlags flags),
+        $(float thickness)
+      );
+    }
+  |]
+
+
+pathArcTo :: MonadIO m => DrawList -> Ptr ImVec2 -> CFloat -> CFloat -> CFloat -> CInt -> m ()
+pathArcTo (DrawList drawList) center radius a_min a_max num_segments = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathArcTo(
+        *$(ImVec2* center),
+        $(float radius),
+        $(float a_min),
+        $(float a_max),
+        $(int num_segments)
+      );
+    }
+  |]
+
+-- | Use precomputed angles for a 12 steps circle.
+pathArcToFast :: MonadIO m => DrawList -> Ptr ImVec2 -> CFloat -> CInt -> CInt -> m ()
+pathArcToFast (DrawList drawList) center radius a_min_of_12 a_max_of_12 = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathArcToFast(
+        *$(ImVec2* center),
+        $(float radius),
+        $(int a_min_of_12),
+        $(int a_max_of_12)
+      );
+    }
+  |]
+
+
+pathBezierCubicCurveTo
+  :: MonadIO m
+  => DrawList
+  -> Ptr ImVec2
+  -> Ptr ImVec2
+  -> Ptr ImVec2
+  -> CInt
+  -> m ()
+pathBezierCubicCurveTo (DrawList drawList) p1 p2 p3 num_segments = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathBezierCubicCurveTo(
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        *$(ImVec2* p3),
+        $(int num_segments)
+      );
+    }
+  |]
+
+pathBezierQuadraticCurveTo
+  :: MonadIO m
+  => DrawList
+  -> Ptr ImVec2
+  -> Ptr ImVec2
+  -> CInt
+  -> m ()
+pathBezierQuadraticCurveTo (DrawList drawList) p1 p2 num_segments = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathBezierQuadraticCurveTo(
+        *$(ImVec2* p1),
+        *$(ImVec2* p2),
+        $(int num_segments)
+      );
+    }
+  |]
+
+
+pathRect :: MonadIO m => DrawList -> Ptr ImVec2 -> Ptr ImVec2 -> CFloat -> ImDrawFlags -> m ()
+pathRect (DrawList drawList) rect_min rect_max rounding flags = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->PathRect(
+        *$(ImVec2* rect_min),
+        *$(ImVec2* rect_max),
+        $(float rounding),
+        $(ImDrawFlags flags)
+      );
+    }
+  |]
+
+
+-- | This is useful if you need to forcefully create a new draw call (to allow for dependent rendering / blending).
+-- Otherwise primitives are merged into the same draw-call as much as possible.
+addDrawCmd :: MonadIO m => DrawList -> m ()
+addDrawCmd (DrawList drawList) = liftIO do
+  [C.block|
+    void {
+      $(ImDrawList* drawList)->AddDrawCmd();
+    }
+  |]
+
+-- | Create a clone of the CmdBuffer/IdxBuffer/VtxBuffer.
+cloneOutput :: MonadIO m => DrawList -> m DrawList
+cloneOutput (DrawList drawList) = liftIO do
+  DrawList <$> [C.block|
+    ImDrawList* {
+      return $(ImDrawList* drawList)->CloneOutput();
+    }
+  |]
--- a/src/DearImGui/Raw/IO.hs
+++ b/src/DearImGui/Raw/IO.hs
@ -0,0 +1,137 @@
+{-# LANGUAGE BlockArguments #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE PatternSynonyms #-}
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE ViewPatterns #-}
+
+{-| Main configuration and I/O between your application and ImGui
+
+-}
+
+module DearImGui.Raw.IO
+  ( setIniFilename
+  , setLogFilename
+
+  , setMouseDoubleClickMaxDist
+  , setMouseDoubleClickTime
+  , setMouseDragThreshold
+
+  , setKeyRepeatDelay
+  , setKeyRepeatRate
+
+  , setUserData
+  ) where
+
+-- TODO: add exports
+
+import Control.Monad.IO.Class
+  ( MonadIO, liftIO )
+import Foreign
+  ( Ptr )
+import Foreign.C
+  ( CFloat(..)
+  , CString
+  )
+
+-- dear-imgui
+import DearImGui.Context
+  ( imguiContext )
+-- import DearImGui.Enums
+-- import DearImGui.Structs
+
+-- inline-c
+import qualified Language.C.Inline as C
+
+-- inline-c-cpp
+import qualified Language.C.Inline.Cpp as Cpp
+
+C.context (Cpp.cppCtx <> C.bsCtx <> imguiContext)
+C.include "imgui.h"
+Cpp.using "namespace ImGui"
+
+setIniFilename :: MonadIO m => CString -> m ()
+setIniFilename ptr = liftIO do
+  [C.block|
+    void {
+      GetIO().IniFilename = $(char * ptr);
+    }
+  |]
+
+setLogFilename :: MonadIO m => CString -> m ()
+setLogFilename ptr = liftIO do
+  [C.block|
+    void {
+      GetIO().LogFilename = $(char * ptr);
+    }
+  |]
+
+setMouseDoubleClickTime :: MonadIO m => CFloat -> m ()
+setMouseDoubleClickTime seconds = liftIO do
+  [C.block|
+    void {
+      GetIO().MouseDoubleClickTime = $(float seconds);
+    }
+  |]
+
+setMouseDoubleClickMaxDist :: MonadIO m => CFloat -> m ()
+setMouseDoubleClickMaxDist pixels = liftIO do
+  [C.block|
+    void {
+      GetIO().MouseDoubleClickMaxDist = $(float pixels);
+    }
+  |]
+
+setMouseDragThreshold :: MonadIO m => CFloat -> m ()
+setMouseDragThreshold pixels = liftIO do
+  [C.block|
+    void {
+      GetIO().MouseDragThreshold = $(float pixels);
+    }
+  |]
+
+setKeyRepeatDelay :: MonadIO m => CFloat -> m ()
+setKeyRepeatDelay seconds = liftIO do
+  [C.block|
+    void {
+      GetIO().KeyRepeatDelay = $(float seconds);
+    }
+  |]
+
+setKeyRepeatRate :: MonadIO m => CFloat -> m ()
+setKeyRepeatRate pixels = liftIO do
+  [C.block|
+    void {
+      GetIO().KeyRepeatRate = $(float pixels);
+    }
+  |]
+
+setUserData :: MonadIO m => Ptr () -> m ()
+setUserData ptr = liftIO do
+  [C.block|
+    void {
+      GetIO().UserData = $(void* ptr);
+    }
+  |]
+
+{- TODO:
+
+bool   WantCaptureMouse;         // Set when Dear ImGui will use mouse inputs, in this case do not dispatch them to your main game/application (either way, always pass on mouse inputs to imgui). (e.g. unclicked mouse is hovering over an imgui window, widget is active, mouse was clicked over an imgui window, etc.).
+bool   WantCaptureKeyboard;      // Set when Dear ImGui will use keyboard inputs, in this case do not dispatch them to your main game/application (either way, always pass keyboard inputs to imgui). (e.g. InputText active, or an imgui window is focused and navigation is enabled, etc.).
+bool   WantTextInput;            // Mobile/console: when set, you may display an on-screen keyboard. This is set by Dear ImGui when it wants textual keyboard input to happen (e.g. when a InputText widget is active).
+bool   WantSetMousePos;          // MousePos has been altered, backend should reposition mouse on next frame. Rarely used! Set only when ImGuiConfigFlags_NavEnableSetMousePos flag is enabled.
+bool   WantSaveIniSettings;      // When manual .ini load/save is active (io.IniFilename == NULL), this will be set to notify your application that you can call SaveIniSettingsToMemory() and save yourself. Important: clear io.WantSaveIniSettings yourself after saving!
+bool   NavActive;                // Keyboard/Gamepad navigation is currently allowed (will handle ImGuiKey_NavXXX events) = a window is focused and it doesn't use the ImGuiWindowFlags_NoNavInputs flag.
+bool   NavVisible;               // Keyboard/Gamepad navigation is visible and allowed (will handle ImGuiKey_NavXXX events).
+float  Framerate;                // Rough estimate of application framerate, in frame per second. Solely for convenience. Rolling average estimation based on io.DeltaTime over 120 frames.
+int    MetricsRenderVertices;    // Vertices output during last call to Render()
+int    MetricsRenderIndices;     // Indices output during last call to Render() = number of triangles * 3
+int    MetricsRenderWindows;     // Number of visible windows
+int    MetricsActiveWindows;     // Number of active windows
+int    MetricsActiveAllocations; // Number of active allocations, updated by MemAlloc/MemFree based on current context. May be off if you have multiple imgui contexts.
+ImVec2 MouseDelta;
+-}
--- a/src/DearImGui/Raw/ListClipper.hs
+++ b/src/DearImGui/Raw/ListClipper.hs
@ -0,0 +1,149 @@
+{-# LANGUAGE BlockArguments #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE PatternSynonyms #-}
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE ViewPatterns #-}
+
+{-| Helper: Manually clip large list of items.
+
+If you are submitting lots of evenly spaced items and you have a random access to the list,
+you can perform coarse clipping based on visibility to save yourself from processing those items at all.
+
+The clipper calculates the range of visible items and advance the cursor to compensate for the non-visible items we have skipped.
+
+Dear ImGui already clips items based on their bounds but it needs to measure text size to do so,
+whereas manual coarse clipping before submission makes this cost and your own data fetching/submission cost almost null.
+
+Usage:
+
+@
+clipper <- ListClipper.new
+ListClipper.begin clipper 1000 -- We have 1000 elements, evenly spaced.
+whileTrue (ListClipper.step clipper) $
+  start <- ListClipper.displayStart clipper
+  end <- ListClipper.displayEnd clipper
+  for_ [start .. end] \ix ->
+    ImGui.text $ "line number " <> show ix
+@
+
+Generally what happens is:
+
+* Clipper lets you process the first element (DisplayStart = 0, DisplayEnd = 1) regardless of it being visible or not.
+* User code submit one element.
+* Clipper can measure the height of the first element
+* Clipper calculate the actual range of elements to display based on the current clipping rectangle,
+  position the cursor before the first visible element.
+* User code submit visible elements.
+-}
+
+module DearImGui.Raw.ListClipper
+  ( ListClipper
+  , new
+  , delete
+  , begin
+  , displayStart
+  , displayEnd
+  , step
+  )
+  where
+
+import Control.Monad.IO.Class
+  ( MonadIO, liftIO )
+import Foreign hiding (new)
+import Foreign.C
+import System.IO.Unsafe (unsafePerformIO)
+
+-- dear-imgui
+import DearImGui.Context
+  ( imguiContext )
+import DearImGui.Structs
+  ( ImGuiListClipper )
+
+-- inline-c
+import qualified Language.C.Inline as C
+
+-- inline-c-cpp
+import qualified Language.C.Inline.Cpp as Cpp
+
+C.context (Cpp.cppCtx <> C.bsCtx <> imguiContext)
+C.include "imgui.h"
+Cpp.using "namespace ImGui"
+
+
+-- | @ImGuiListClipper@ object handle.
+type ListClipper = Ptr ImGuiListClipper
+
+
+-- | Create a new 'ListClipper' instance.
+new :: (MonadIO m) => m ListClipper
+new = liftIO do
+  [C.block|
+    ImGuiListClipper* {
+      return IM_NEW(ImGuiListClipper);
+    }
+  |]
+
+-- | Destroy 'ListClipper' instance.
+delete :: (MonadIO m) => ListClipper -> m ()
+delete clipper = liftIO do
+  [C.block|
+    void {
+      IM_DELETE($(ImGuiListClipper* clipper));
+    }
+  |]
+
+
+-- | ListClipper setup
+--
+-- @items_count@: Use 'maxBound' if you don't know how many items you have
+-- (in which case the cursor won't be advanced in the final step).
+--
+-- @items_height@: Use -1.0f to be calculated automatically on first step.
+-- Otherwise pass in the distance between your items, typically
+-- 'getTextLineHeightWithSpacing' or 'getFrameHeightWithSpacing'.
+--
+-- Wraps @ListClipper::Begin()@.
+begin :: (MonadIO m) => ListClipper -> CInt -> CFloat -> m ()
+begin clipper items_count items_height = liftIO do
+  [C.block|
+    void {
+      $(ImGuiListClipper* clipper)->Begin($(int items_count), $(float items_height));
+    }
+  |]
+
+-- | An accessor for @ListClipper::Begin@
+displayStart :: ListClipper -> CInt
+displayStart clipper = unsafePerformIO do
+  [C.exp|
+    int {
+      $(ImGuiListClipper* clipper)->DisplayStart
+    }
+  |]
+
+-- | An accessor for @ListClipper::DisplayStart@
+displayEnd :: ListClipper -> CInt
+displayEnd clipper = unsafePerformIO
+  [C.exp|
+    int {
+      $(ImGuiListClipper* clipper)->DisplayEnd
+    }
+  |]
+
+
+-- | Call until it returns 'False'.
+--
+-- The 'displayStart'/'displayEnd' fields will be set and you can process/draw those items.
+--
+-- Wraps @ListClipper::Step()@.
+step :: (MonadIO m) => ListClipper -> m Bool
+step clipper = liftIO do
+  (0 /=) <$> [C.block|
+    bool {
+      return $(ImGuiListClipper* clipper)->Step();
+    }
+  |]
--- a/src/DearImGui/SDL.hs
+++ b/src/DearImGui/SDL.hs
@ -40,7 +40,6 @@ import qualified Language.C.Inline.Cpp as Cpp

 -- sdl2
 import SDL
-import SDL.Internal.Types
 import SDL.Raw.Enum as Raw
 import qualified SDL.Raw.Event as Raw

@ -57,9 +56,9 @@ Cpp.using "namespace ImGui"


 -- | Wraps @ImGui_ImplSDL2_NewFrame@.
-sdl2NewFrame :: MonadIO m => Window -> m ()
-sdl2NewFrame (Window windowPtr) = liftIO do
-  [C.exp| void { ImGui_ImplSDL2_NewFrame((SDL_Window*)($(void* windowPtr))); } |]
+sdl2NewFrame :: MonadIO m => m ()
+sdl2NewFrame = liftIO do
+  [C.exp| void { ImGui_ImplSDL2_NewFrame(); } |]


 -- | Wraps @ImGui_ImplSDL2_Shutdown@.
--- a/src/DearImGui/Structs.hs
+++ b/src/DearImGui/Structs.hs
@ -4,11 +4,14 @@
 module DearImGui.Structs where

 -- base
+import Data.Word
+  ( Word32 )
 import Foreign
  ( Storable(..), castPtr, plusPtr )

 --------------------------------------------------------------------------------
 data ImVec2 = ImVec2 { x, y :: {-# unpack #-} !Float }
+  deriving (Show)


 instance Storable ImVec2 where
@ -27,6 +30,7 @@ instance Storable ImVec2 where


 data ImVec3 = ImVec3 { x, y, z :: {-# unpack #-} !Float }
+  deriving (Show)


 instance Storable ImVec3 where
@ -47,6 +51,7 @@ instance Storable ImVec3 where


 data ImVec4 = ImVec4 { x, y, z, w :: {-# unpack #-} !Float }
+  deriving (Show)


 instance Storable ImVec4 where
@ -66,3 +71,20 @@ instance Storable ImVec4 where
    z <- peek (castPtr ptr `plusPtr` (sizeOf x * 2))
    w <- peek (castPtr ptr `plusPtr` (sizeOf x * 3))
    return ImVec4{ x, y, z, w }
+
+--------------------------------------------------------------------------------
+
+-- | DearImGui context handle.
+data ImGuiContext
+
+-- | Individual font handle.
+data ImFont
+
+-- | Opaque DrawList handle.
+data ImDrawList
+
+-- | 'DearImGui.Raw.ListClipper.ListClipper' pointer tag.
+data ImGuiListClipper
+
+-- | 32-bit unsigned integer (often used to store packed colors).
+type ImU32 = Word32
Author	SHA1	Message	Date
Alexander Bondarenko	3087a99044	Allow megaparsec 9.2 (#112 ) Closes #106	2021-10-30 18:57:15 +00:00
Alexander Bondarenko	f74cd218c5	Bump imgui to 1.85 (#111 ) Closes #110	2021-10-30 18:49:39 +00:00
Alexander Bondarenko	48c8ae0379	Add IO exports (#109 )	2021-10-04 18:49:16 +00:00
Alexander Bondarenko	a2c0c0658e	Remove library options preventing hackage upload (#108 )	2021-10-04 18:41:07 +00:00
Alexander Bondarenko	21ce5cabd8	Add ImGuiIO basics (#107 )	2021-10-04 17:29:32 +00:00
jpwidera	8db9ddec2f	Added compiler flags stanzas. (#105 )	2021-09-21 15:14:37 +03:00
jpwidera	4ecf62ac9e	Implement ImGuiListClipper (#100 ) * Added DearImGui.Raw.ImGuiListClipper * Added the DearImGui.withListClipper bracket * Added dependency for `vector` * Added the test in the Main.hs	2021-09-17 11:09:22 +03:00
Alexander Bondarenko	8ee82476dc	Add raw DrawList bindings (#99 )	2021-09-15 08:52:00 +03:00
Alexander Bondarenko	b4bc36ca89	Update readme example (#103 ) Fixes #68	2021-09-14 15:41:38 +03:00
Ollie Charles	76ce7bb569	Nix upgrades (#102 ) Switches the default Nix build to use GHC 8.10.7 and NixOS 21.05	2021-09-14 01:58:39 +00:00
Ollie Charles	259ffbff48	Fix `DearImGui` TOC (#101 )	2021-09-13 17:05:49 +00:00
Alexander Bondarenko	97825e49f2	Prepare 1.2.0 (#98 )	2021-09-12 19:46:05 +03:00
Alexander Bondarenko	24345bb8f3	Add font utils (#56 ) - clearFontAtlas - addFontDefault - addFontFromFileTTF - addFontFromMemoryTTF (raw only) - buildFontAtlas Vulkan example updated to use on f the imgui-distributed ttf files.	2021-09-12 15:41:42 +00:00
Alexander Bondarenko	e3f7fbfd6f	Add imageButton (#97 )	2021-09-12 13:20:47 +00:00
Alexander Bondarenko	88326420b8	Tidy up image example (#96 )	2021-09-12 11:56:43 +00:00
jpwidera	f3b85899f2	Added image wrapper (#74 ) Raw.image and sdl2/gl example "image" Wrappers should be backend-specific due to different handling of `userTextureIDPtr`.	2021-09-12 10:35:03 +00:00
Alexander Bondarenko	c7a694bce8	Add remaining BeginChild arguments as required (#93 ) Old behaviour with all default arguments is a special case to run some action scoped to a different child window. This now handled by `beginChildContext`/`withChildContext`.	2021-09-12 10:28:48 +00:00
Alexander Bondarenko	c219f8eb4f	Wrap GetCurrentContext and SetCurrentContext (#94 )	2021-09-12 10:23:23 +00:00
Alexander Bondarenko	24519778e6	Add inputTextMultiline, inputTextWithHint (#92 ) - Experimental explicit encoding for CStrings. - Fix potential buffer overruns in inputText.	2021-09-12 11:43:44 +03:00
Alexander Bondarenko	4bfc7e7099	Add invisibleButton (#91 )	2021-09-11 11:01:03 +00:00
Alexander Bondarenko	efaaa5723a	Add Show instances to structs and enums (#90 )	2021-09-11 10:40:05 +00:00
Alexander Bondarenko	be7aa1e9b1	Add functions for getting window position and size (#89 ) - getWindowPos - getWindowSize - getWindowWidth - getWindowHeight Closes #88	2021-09-11 10:09:11 +00:00
jpwidera	08b3139477	Remove seg faults (#87 ) * Removed double OpenGl3Shutdown, leading to a segmentation fault in Main.hs. * Changed nullPtr passing with Maybe to use DearImGui default arguments.	2021-09-11 10:00:08 +00:00
Ollie Charles	cede825dff	Bump haskell.nix (#86 )	2021-09-08 16:19:57 +00:00
Ollie Charles	84a6b8a8fe	Allow `parser-combinators-1.4` (#85 )	2021-09-08 13:10:39 +01:00
Alexander Bondarenko	cb687b8f01	Prepare 1.1.0 (#83 )	2021-09-01 18:05:18 +00:00
Alexander Bondarenko	8d07a5a42b	Add more withXXX wrappers (#82 ) - withStyleColor - withStyleVar - withIndent - withItemWidth Closes #63	2021-09-01 17:23:59 +00:00
Alexander Bondarenko	d3a0396623	Add GLFW callbacks (#81 ) Closes #80	2021-09-01 19:22:55 +03:00
Alexander Bondarenko	f49e81c739	Fix warnings (#79 )	2021-08-30 17:08:23 +00:00
Alexander Bondarenko	5699f64e95	Bump imgui to 1.84.2 (#78 )	2021-08-30 19:57:00 +03:00
Alexander Bondarenko	9e5b39850e	Prepare 1.0.2 (#77 )	2021-08-30 19:20:26 +03:00
Alexander Bondarenko	d7dc999e8b	Add withID (#75 ) Raw versions are specialized to match overloaded C++ functions.	2021-08-28 15:52:04 +00:00
Ollie Charles	bde2030c25	Upgrade Haskell.nix and niv (#73 )	2021-07-01 12:58:55 +00:00
Alexander Bondarenko	1706b7e966	Fix changelog header and links (#72 )	2021-06-30 22:44:31 +00:00
Alexander Bondarenko	bfe8453891	Fix missing headers in source dist (#71 ) Fixes #50 again	2021-06-30 22:33:00 +00:00
Alexander Bondarenko	532eebd8ed	Prepare Hackage release (#70 )	2021-07-01 00:47:23 +03:00