Drezil/dear-imgui.hs
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Move everything to MonadIO

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Ollie Charles
2021-01-24 16:34:36 +00:00
parent aa681fb77d
commit 4f9a552a32
1 changed files with 114 additions and 85 deletions
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199
src/DearImGui.hs
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@@ -76,9 +76,10 @@ module DearImGui
)
where
import Control.Monad ( when )
import Control.Monad.IO.Class ( MonadIO, liftIO )
import Data.Bool
import Data.StateVar
import Control.Monad ( when )
import Foreign
import Foreign.C
import qualified Language.C.Inline as C
@@ -103,14 +104,14 @@ newtype Context = Context (Ptr ())
-- | Wraps @ImGui::CreateContext()@.
createContext :: IO Context
createContext =
createContext :: MonadIO m => m Context
createContext = liftIO do
Context <$> [C.exp| void* { CreateContext() } |]
-- | Wraps @ImGui::DestroyContext()@.
destroyContext :: Context -> IO ()
destroyContext (Context contextPtr) =
destroyContext :: MonadIO m => Context -> m ()
destroyContext (Context contextPtr) = liftIO do
[C.exp| void { DestroyContext((ImGuiContext*)$(void* contextPtr)); } |]
@@ -118,22 +119,25 @@ destroyContext (Context contextPtr) =
-- until 'render'/'endFrame'.
--
-- Wraps @ImGui::NewFrame()@.
newFrame :: IO ()
newFrame = [C.exp| void { ImGui::NewFrame(); } |]
newFrame :: MonadIO m => m ()
newFrame = liftIO do
[C.exp| void { ImGui::NewFrame(); } |]
-- | Ends the Dear ImGui frame. automatically called by 'render'. If you don't
-- need to render data (skipping rendering) you may call 'endFrame' without
-- 'render'... but you'll have wasted CPU already! If you don't need to render,
-- better to not create any windows and not call 'newFrame' at all!
endFrame :: IO ()
endFrame = [C.exp| void { ImGui::EndFrame(); } |]
endFrame :: MonadIO m => m ()
endFrame = liftIO do
[C.exp| void { ImGui::EndFrame(); } |]
-- | Ends the Dear ImGui frame, finalize the draw data. You can then get call
-- 'getDrawData'.
render :: IO ()
render = [C.exp| void { ImGui::Render(); } |]
render :: MonadIO m => m ()
render = liftIO do
[C.exp| void { ImGui::Render(); } |]
-- | Wraps @ImDrawData*@.
@@ -142,19 +146,20 @@ newtype DrawData = DrawData (Ptr ())
-- | Valid after 'render' and until the next call to 'newFrame'. This is what
-- you have to render.
getDrawData :: IO DrawData
getDrawData = DrawData <$> [C.exp| void* { ImGui::GetDrawData() } |]
getDrawData :: MonadIO m => m DrawData
getDrawData = liftIO do
DrawData <$> [C.exp| void* { ImGui::GetDrawData() } |]
-- | Wraps @IMGUI_CHECKVERSION()@
checkVersion :: IO ()
checkVersion =
checkVersion :: MonadIO m => m ()
checkVersion = liftIO do
[C.exp| void { IMGUI_CHECKVERSION(); } |]
-- | Wraps @ImGui_ImplSDL2_InitForOpenGL@.
sdl2InitForOpenGL :: Window -> GLContext -> IO ()
sdl2InitForOpenGL (Window windowPtr) glContext =
sdl2InitForOpenGL :: MonadIO m => Window -> GLContext -> m ()
sdl2InitForOpenGL (Window windowPtr) glContext = liftIO do
[C.exp| void { ImGui_ImplSDL2_InitForOpenGL((SDL_Window*)$(void* windowPtr), $(void* glContextPtr)); } |]
where
glContextPtr :: Ptr ()
@@ -162,101 +167,115 @@ sdl2InitForOpenGL (Window windowPtr) glContext =
-- | Wraps @ImGui_ImplSDL2_NewFrame@.
sdl2NewFrame :: Window -> IO ()
sdl2NewFrame (Window windowPtr) =
sdl2NewFrame :: MonadIO m => Window -> m ()
sdl2NewFrame (Window windowPtr) = liftIO do
[C.exp| void { ImGui_ImplSDL2_NewFrame((SDL_Window*)($(void* windowPtr))); } |]
-- | Wraps @ImGui_ImplSDL2_Shutdown@.
sdl2Shutdown :: IO ()
sdl2Shutdown = [C.exp| void { ImGui_ImplSDL2_Shutdown(); } |]
sdl2Shutdown :: MonadIO m => m ()
sdl2Shutdown = liftIO do
[C.exp| void { ImGui_ImplSDL2_Shutdown(); } |]
-- | Call the SDL2 'pollEvent' function, while also dispatching the event to
-- Dear ImGui. You should use this in your application instead of 'pollEvent'.
pollEventWithImGui :: IO (Maybe Event)
pollEventWithImGui = alloca \evPtr -> do
pumpEvents
pollEventWithImGui :: MonadIO m => m (Maybe Event)
pollEventWithImGui = liftIO do
alloca \evPtr -> do
pumpEvents
-- We use NULL first to check if there's an event.
nEvents <- Raw.peepEvents evPtr 1 Raw.SDL_PEEKEVENT Raw.SDL_FIRSTEVENT Raw.SDL_LASTEVENT
-- We use NULL first to check if there's an event.
nEvents <- Raw.peepEvents evPtr 1 Raw.SDL_PEEKEVENT Raw.SDL_FIRSTEVENT Raw.SDL_LASTEVENT
when (nEvents > 0) do
let evPtr' = castPtr evPtr :: Ptr ()
[C.exp| void { ImGui_ImplSDL2_ProcessEvent((SDL_Event*) $(void* evPtr')) } |]
when (nEvents > 0) do
let evPtr' = castPtr evPtr :: Ptr ()
[C.exp| void { ImGui_ImplSDL2_ProcessEvent((SDL_Event*) $(void* evPtr')) } |]
pollEvent
pollEvent
-- | Wraps @ImGui_ImplOpenGL2_Init@.
openGL2Init :: IO ()
openGL2Init = [C.exp| void { ImGui_ImplOpenGL2_Init(); } |]
openGL2Init :: MonadIO m => m ()
openGL2Init = liftIO do
[C.exp| void { ImGui_ImplOpenGL2_Init(); } |]
-- | Wraps @ImGui_ImplOpenGL2_Shutdown@.
openGL2Shutdown :: IO ()
openGL2Shutdown = [C.exp| void { ImGui_ImplOpenGL2_Shutdown(); } |]
openGL2Shutdown :: MonadIO m => m ()
openGL2Shutdown = liftIO do
[C.exp| void { ImGui_ImplOpenGL2_Shutdown(); } |]
-- | Wraps @ImGui_ImplOpenGL2_NewFrame@.
openGL2NewFrame :: IO ()
openGL2NewFrame = [C.exp| void { ImGui_ImplOpenGL2_NewFrame(); } |]
openGL2NewFrame :: MonadIO m => m ()
openGL2NewFrame = liftIO do
[C.exp| void { ImGui_ImplOpenGL2_NewFrame(); } |]
-- | Wraps @ImGui_ImplOpenGL2_RenderDrawData@.
openGL2RenderDrawData :: DrawData -> IO ()
openGL2RenderDrawData (DrawData ptr) = [C.exp| void { ImGui_ImplOpenGL2_RenderDrawData((ImDrawData*) $( void* ptr )) } |]
openGL2RenderDrawData :: MonadIO m => DrawData -> m ()
openGL2RenderDrawData (DrawData ptr) = liftIO do
[C.exp| void { ImGui_ImplOpenGL2_RenderDrawData((ImDrawData*) $( void* ptr )) } |]
-- | Create demo window. Demonstrate most ImGui features. Call this to learn
-- about the library! Try to make it always available in your application!
showDemoWindow :: IO ()
showDemoWindow = [C.exp| void { ImGui::ShowDemoWindow(); } |]
showDemoWindow :: MonadIO m => m ()
showDemoWindow = liftIO do
[C.exp| void { ImGui::ShowDemoWindow(); } |]
-- | Create Metrics/Debugger window. Display Dear ImGui internals: windows, draw
-- commands, various internal state, etc.
showMetricsWindow :: IO ()
showMetricsWindow = [C.exp| void { ImGui::ShowMetricsWindow(); } |]
showMetricsWindow :: MonadIO m => m ()
showMetricsWindow = liftIO do
[C.exp| void { ImGui::ShowMetricsWindow(); } |]
-- | Create About window. display Dear ImGui version, credits and build/system
-- information.
showAboutWindow :: IO ()
showAboutWindow = [C.exp| void { ShowAboutWindow(); } |]
showAboutWindow :: MonadIO m => m ()
showAboutWindow = liftIO do
[C.exp| void { ShowAboutWindow(); } |]
-- | Add basic help/info block (not a window): how to manipulate ImGui as a
-- end-user (mouse/keyboard controls).
showUserGuide :: IO ()
showUserGuide = [C.exp| void { ShowUserGuide() } |]
showUserGuide :: MonadIO m => m ()
showUserGuide = liftIO do
[C.exp| void { ShowUserGuide() } |]
-- | Get the compiled version string e.g. "1.80 WIP" (essentially the value for
-- @IMGUI_VERSION@ from the compiled version of @imgui.cpp@).
getVersion :: IO String
getVersion = peekCString =<< [C.exp| const char* { GetVersion() } |]
getVersion :: MonadIO m => m String
getVersion = liftIO do
peekCString =<< [C.exp| const char* { GetVersion() } |]
-- | New, recommended style (default).
--
-- Wraps @ImGui::StyleColorsDark()@.
styleColorsDark :: IO ()
styleColorsDark = [C.exp| void { StyleColorsDark(); } |]
styleColorsDark :: MonadIO m => m ()
styleColorsDark = liftIO do
[C.exp| void { StyleColorsDark(); } |]
-- | Best used with borders and a custom, thicker font.
--
-- Wraps @ImGui::StyleColorsLight()@.
styleColorsLight :: IO ()
styleColorsLight = [C.exp| void { StyleColorsLight(); } |]
styleColorsLight :: MonadIO m => m ()
styleColorsLight = liftIO do
[C.exp| void { StyleColorsLight(); } |]
-- | Classic ImGui style.
--
-- Wraps @ImGui::StyleColorsClasic()@.
styleColorsClassic :: IO ()
styleColorsClassic = [C.exp| void { StyleColorsClassic(); } |]
styleColorsClassic :: MonadIO m => m ()
styleColorsClassic = liftIO do
[C.exp| void { StyleColorsClassic(); } |]
-- | Push window to the stack and start appending to it.
@@ -266,53 +285,59 @@ styleColorsClassic = [C.exp| void { StyleColorsClassic(); } |]
-- matching 'end' for each 'begin' call, regardless of its return value!
--
-- Wraps @ImGui::Begin()@.
begin :: String -> IO Bool
begin name = withCString name \namePtr ->
(1 ==) <$> [C.exp| bool { ImGui::Begin($(char* namePtr)) } |]
begin :: MonadIO m => String -> m Bool
begin name = liftIO do
withCString name \namePtr ->
(1 ==) <$> [C.exp| bool { ImGui::Begin($(char* namePtr)) } |]
-- | Pop window from the stack.
--
-- Wraps @ImGui::End()@.
end :: IO ()
end = [C.exp| void { ImGui::End(); } |]
end :: MonadIO m => m ()
end = liftIO do
[C.exp| void { ImGui::End(); } |]
-- | Formatted text.
--
-- Wraps @ImGui::Text()@.
text :: String -> IO ()
text t = withCString t \textPtr ->
[C.exp| void { Text($(char* textPtr)) } |]
text :: MonadIO m => String -> m ()
text t = liftIO do
withCString t \textPtr ->
[C.exp| void { Text($(char* textPtr)) } |]
-- | A button. Returns 'True' when clicked.
--
-- Wraps @ImGui::Button()@.
button :: String -> IO Bool
button label = withCString label \labelPtr ->
(1 ==) <$> [C.exp| bool { Button($(char* labelPtr)) } |]
button :: MonadIO m => String -> m Bool
button label = liftIO do
withCString label \labelPtr ->
(1 ==) <$> [C.exp| bool { Button($(char* labelPtr)) } |]
-- | Button with @FramePadding=(0,0)@ to easily embed within text.
--
-- Wraps @ImGui::SmallButton()@.
smallButton :: String -> IO Bool
smallButton label = withCString label \labelPtr ->
(1 ==) <$> [C.exp| bool { SmallButton($(char* labelPtr)) } |]
smallButton :: MonadIO m => String -> m Bool
smallButton label = liftIO do
withCString label \labelPtr ->
(1 ==) <$> [C.exp| bool { SmallButton($(char* labelPtr)) } |]
-- | Square button with an arrow shape.
--
-- Wraps @ImGui::ArrowButton()@.
arrowButton :: String -> ImGuiDir -> IO Bool
arrowButton strId (ImGuiDir dir) = withCString strId \strIdPtr ->
(1 ==) <$> [C.exp| bool { ArrowButton($(char* strIdPtr), $(int dir)) } |]
arrowButton :: MonadIO m => String -> ImGuiDir -> m Bool
arrowButton strId (ImGuiDir dir) = liftIO do
withCString strId \strIdPtr ->
(1 ==) <$> [C.exp| bool { ArrowButton($(char* strIdPtr), $(int dir)) } |]
-- | Wraps @ImGui::Checkbox()@.
checkbox :: (HasSetter ref Bool, HasGetter ref Bool) => String -> ref -> IO Bool
checkbox label ref = do
checkbox :: (HasSetter ref Bool, HasGetter ref Bool, MonadIO m) => String -> ref -> m Bool
checkbox label ref = liftIO do
currentValue <- get ref
with (bool 0 1 currentValue :: CBool) \boolPtr -> do
changed <- withCString label \labelPtr ->
@@ -324,9 +349,10 @@ checkbox label ref = do
return changed
progressBar :: Float -> Maybe String -> IO ()
progressBar progress overlay = withCStringOrNull overlay \overlayPtr ->
[C.exp| void { ProgressBar($(float c'progress), ImVec2(-FLT_MIN, 0), $(char* overlayPtr)) } |]
progressBar :: MonadIO m => Float -> Maybe String -> m ()
progressBar progress overlay = liftIO do
withCStringOrNull overlay \overlayPtr ->
[C.exp| void { ProgressBar($(float c'progress), ImVec2(-FLT_MIN, 0), $(char* overlayPtr)) } |]
where
c'progress :: CFloat
c'progress = realToFrac progress
@@ -334,8 +360,9 @@ progressBar progress overlay = withCStringOrNull overlay \overlayPtr ->
-- | Draw a small circle + keep the cursor on the same line. Advance cursor x
-- position by 'getTreeNodeToLabelSpacing', same distance that 'treeNode' uses.
bullet :: IO ()
bullet = [C.exp| void { Bullet() } |]
bullet :: MonadIO m => m ()
bullet = liftIO do
[C.exp| void { Bullet() } |]
-- | Begin creating a combo box with a given label and preview value.
@@ -344,8 +371,8 @@ bullet = [C.exp| void { Bullet() } |]
-- the contents of the combo box - for example, by calling 'selectable'.
--
-- Wraps @ImGui::BeginCombo()@.
beginCombo :: String -> String -> IO Bool
beginCombo label previewValue =
beginCombo :: MonadIO m => String -> String -> m Bool
beginCombo label previewValue = liftIO $
withCString label \labelPtr ->
withCString previewValue \previewValuePtr ->
(1 ==) <$> [C.exp| bool { BeginCombo($(char* labelPtr), $(char* previewValuePtr)) } |]
@@ -354,14 +381,16 @@ beginCombo label previewValue =
-- | Only call 'endCombo' if 'beginCombon' returns 'True'!
--
-- Wraps @ImGui::EndCombo()@.
endCombo :: IO ()
endCombo = [C.exp| void { EndCombo() } |]
endCombo :: MonadIO m => m ()
endCombo = liftIO do
[C.exp| void { EndCombo() } |]
-- | Wraps @ImGui::Selectable()@.
selectable :: String -> IO Bool
selectable label = withCString label \labelPtr ->
(1 == ) <$> [C.exp| bool { Selectable($(char* labelPtr)) } |]
selectable :: MonadIO m => String -> m Bool
selectable label = liftIO do
withCString label \labelPtr ->
(1 == ) <$> [C.exp| bool { Selectable($(char* labelPtr)) } |]
-- | A cardinal direction.