Documentation
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Overview ¶
Package gui is an abstraction layer for real GUI implementations. It defines the Events that can be passed from the GUI to the emulation code and also the Requests that can be made from the emulation code to the GUI. Implementations need to convert their specific signals and requests to and from these abstractions.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type Event ¶
type Event interface{}
Event represents all the different type of events that can occur in the gui
Events are the things that happen in the gui, as a result of user interaction, and sent over a registered event channel.
type EventDbgMouseButton ¶
type EventDbgMouseButton struct { Button MouseButton Down bool X int Y int HorizPos int Scanline int }
EventDbgMouseButton is the data that accompanies MouseEventMove events
type EventKeyboard ¶
EventKeyboard is the data that accompanies EventKeyboard events
type EventMouseButton ¶
type EventMouseButton struct { Button MouseButton Down bool }
EventMouseButton is the data that accompanies MouseEventMove events
type EventMouseMotion ¶
EventMouseMotion is the data that accompanies MouseEventMove events
type FeatureReq ¶
type FeatureReq string
FeatureReq is used to request the setting of a gui attribute eg. toggling the overlay
const ( // visibility can be interpreted by the gui implementation in different // ways. at it's simplest it should set the visibility of the TV screen ReqSetVisibility FeatureReq = "ReqSetVisibility" // bool ReqToggleVisibility FeatureReq = "ReqToggleVisibility" // none // the following requests should set or toggle visual elements of the // debugger ReqSetDbgColors FeatureReq = "ReqSetDbgColors" // bool ReqToggleDbgColors FeatureReq = "ReqToggleDbgColors" // none ReqSetCropping FeatureReq = "ReqSetCropping" // bool ReqToggleCropping FeatureReq = "ReqToggleCropping" // none ReqSetOverlay FeatureReq = "ReqSetOverlay" // bool ReqToggleOverlay FeatureReq = "ReqToggleOverlay" // none ReqCRTeffects FeatureReq = "ReqCRTeffects" // bool ReqSetScale FeatureReq = "ReqSetScale" // float ReqIncScale FeatureReq = "ReqIncScale" // none ReqDecScale FeatureReq = "ReqDecScale" // none // pause is set when the debugger has paused it's loop. the gui can then // present information differently as necessary ReqSetPause FeatureReq = "ReqSetPause" // bool // The add debugger request must be made by the debugger if debug access to // the the machine is required by the GUI ReqAddDebugger FeatureReq = "ReqAddDebugger" // *debugger.Debugger // the event channel is used to by the GUI implementation to send // information back to the main program. the GUI may or may not be in its // own go routine but regardless, the event channel is used for this // purpose. ReqSetEventChan FeatureReq = "ReqSetEventChan" // chan gui.Event() // playmode is called whenever the play/debugger looper is changed. like // all other requests this may not do anything, depending on the GUI // specifics ReqSetPlaymode FeatureReq = "ReqSetPlaymode" // bool // trigger a save preferences event. usually performed before gui is // destroyed or before some other destructive action ReqSavePrefs FeatureReq = "ReqSavePrefs" // none // triggered when cartridge is being change ReqChangingCartridge FeatureReq = "ReqChangingCartridge" // bool // ------------------------------------------------------ // the following requests are deprecated ReqSetVisibleOnStable FeatureReq = "ReqSetVisibleOnStable" // none )
List of valid feature requests. argument must be of the type specified or else the interface{} type conversion will fail and the application will probably crash.
Note that, like the name suggests, these are requests, they may or may not be satisifed depending other conditions in the GUI.
type GUI ¶
type GUI interface { // send a request to set a gui feature ReqFeature(request FeatureReq, args ...interface{}) error }
GUI defines the operations that can be performed on visual user interfaces.
type MouseButton ¶
type MouseButton int
MouseButton identifies the mouse button
const ( MouseButtonNone MouseButton = iota MouseButtonLeft MouseButtonRight MouseButtonMiddle )
list of valid MouseButtonIDs
Directories
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Path | Synopsis |
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deprecated
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sdldebug
Package sdldebug implements the GUI interface.
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Package sdldebug implements the GUI interface. |
Package sdlaudio provides the Audio type.
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Package sdlaudio provides the Audio type. |
This file is part of Gopher2600.
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This file is part of Gopher2600. |
lazyvalues
Package lazyvalues is the method used by sdlimgui (and possibly other GUI implementations) when access emulator data from the GUI thread.
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Package lazyvalues is the method used by sdlimgui (and possibly other GUI implementations) when access emulator data from the GUI thread. |