Copyright	(c) 2018 Francisco Vallarino
License	BSD-3-Clause (see the LICENSE file)
Maintainer	fjvallarino@gmail.com
Stability	experimental
Portability	non-portable
Safe Haskell	Safe-Inferred
Language	Haskell2010

Monomer.Event.Core

Description

Core functions for SDL event processing and conversion.

Synopsis

data ConvertEventsCfg = ConvertEventsCfg {
- _cecOs :: Text
- _cecDpr :: Double
- _cecEpr :: Double
- _cecInvertWheelX :: Bool
- _cecInvertWheelY :: Bool
}
isActionEvent :: EventPayload -> Bool
convertEvents :: ConvertEventsCfg -> Point -> [EventPayload] -> [SystemEvent]
translateEvent :: Point -> SystemEvent -> SystemEvent

Documentation

data ConvertEventsCfg Source #

Configuration options for converting from an SDL event to a SystemEvent.

Constructors

ConvertEventsCfg
Fields _cecOs :: Text The host operating system. _cecDpr :: Double Device pixel rate. _cecEpr :: Double Event pixel rate. _cecInvertWheelX :: Bool Whether wheel/trackpad x direction should be inverted. _cecInvertWheelY :: Bool Whether wheel/trackpad y direction should be inverted.

Instances

Instances details

Show ConvertEventsCfg Source #
Instance details Defined in Monomer.Event.Core Methods showsPrec :: Int -> ConvertEventsCfg -> ShowS # show :: ConvertEventsCfg -> String # showList :: [ConvertEventsCfg] -> ShowS #
Eq ConvertEventsCfg Source #
Instance details Defined in Monomer.Event.Core Methods (==) :: ConvertEventsCfg -> ConvertEventsCfg -> Bool # (/=) :: ConvertEventsCfg -> ConvertEventsCfg -> Bool #

isActionEvent :: EventPayload -> Bool Source #

Checks if an SDL event is an action event. Currently only mouse and keyboard events are considered as such (touch events should be added in the future). This is used for triggering automatic rendering of a frame. For other events, widgets must request rendering explicitly.

convertEvents Source #

Arguments

:: ConvertEventsCfg	Settings for event conversion.
-> Point	Mouse position.
-> [EventPayload]	List of SDL events.
-> [SystemEvent]	List of Monomer events.

Converts SDL events to Monomer's SystemEvent

translateEvent Source #

Arguments

:: Point	Offset to apply
-> SystemEvent	Source SystemEvent
-> SystemEvent	Updated SystemEvent

Adds a given offset to mouse related SystemEvents.