Copyright	Will Thompson Iñaki García Etxebarria and Jonas Platte
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria (inaki@blueleaf.cc)
Safe Haskell	None
Language	Haskell2010

GI.Gdk.Objects.Monitor

Contents

Exported types
Methods
Properties
Signals
- invalidate

Description

GdkMonitor objects represent the individual outputs that are associated with a Display. GdkDisplay has APIs to enumerate monitors with displayGetNMonitors and displayGetMonitor, and to find particular monitors with displayGetPrimaryMonitor or displayGetMonitorAtWindow.

GdkMonitor was introduced in GTK+ 3.22 and supersedes earlier APIs in GdkScreen to obtain monitor-related information.

Synopsis

newtype Monitor = Monitor (ManagedPtr Monitor)
class (GObject o, IsDescendantOf Monitor o) => IsMonitor o
toMonitor :: (MonadIO m, IsMonitor o) => o -> m Monitor
noMonitor :: Maybe Monitor
monitorGetDisplay :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m Display
monitorGetGeometry :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m Rectangle
monitorGetHeightMm :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m Int32
monitorGetManufacturer :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m (Maybe Text)
monitorGetModel :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m (Maybe Text)
monitorGetRefreshRate :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m Int32
monitorGetScaleFactor :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m Int32
monitorGetSubpixelLayout :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m SubpixelLayout
monitorGetWidthMm :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m Int32
monitorGetWorkarea :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m Rectangle
monitorIsPrimary :: (HasCallStack, MonadIO m, IsMonitor a) => a -> m Bool
constructMonitorDisplay :: (IsMonitor o, IsDisplay a) => a -> IO (GValueConstruct o)
getMonitorDisplay :: (MonadIO m, IsMonitor o) => o -> m Display
getMonitorGeometry :: (MonadIO m, IsMonitor o) => o -> m (Maybe Rectangle)
getMonitorHeightMm :: (MonadIO m, IsMonitor o) => o -> m Int32
getMonitorManufacturer :: (MonadIO m, IsMonitor o) => o -> m (Maybe Text)
getMonitorModel :: (MonadIO m, IsMonitor o) => o -> m (Maybe Text)
getMonitorRefreshRate :: (MonadIO m, IsMonitor o) => o -> m Int32
getMonitorScaleFactor :: (MonadIO m, IsMonitor o) => o -> m Int32
getMonitorSubpixelLayout :: (MonadIO m, IsMonitor o) => o -> m SubpixelLayout
getMonitorWidthMm :: (MonadIO m, IsMonitor o) => o -> m Int32
getMonitorWorkarea :: (MonadIO m, IsMonitor o) => o -> m (Maybe Rectangle)
type C_MonitorInvalidateCallback = Ptr () -> Ptr () -> IO ()
type MonitorInvalidateCallback = IO ()
afterMonitorInvalidate :: (IsMonitor a, MonadIO m) => a -> MonitorInvalidateCallback -> m SignalHandlerId
genClosure_MonitorInvalidate :: MonadIO m => MonitorInvalidateCallback -> m (GClosure C_MonitorInvalidateCallback)
mk_MonitorInvalidateCallback :: C_MonitorInvalidateCallback -> IO (FunPtr C_MonitorInvalidateCallback)
noMonitorInvalidateCallback :: Maybe MonitorInvalidateCallback
onMonitorInvalidate :: (IsMonitor a, MonadIO m) => a -> MonitorInvalidateCallback -> m SignalHandlerId
wrap_MonitorInvalidateCallback :: MonitorInvalidateCallback -> C_MonitorInvalidateCallback

Exported types

newtype Monitor Source #

Memory-managed wrapper type.

Constructors

Monitor (ManagedPtr Monitor)

Instances

GObject Monitor Source #
Instance details Defined in GI.Gdk.Objects.Monitor Methods gobjectType :: IO GType #
HasParentTypes Monitor Source #
Instance details Defined in GI.Gdk.Objects.Monitor
type ParentTypes Monitor Source #
Instance details Defined in GI.Gdk.Objects.Monitor type ParentTypes Monitor = Object ': ([] :: [Type])

class (GObject o, IsDescendantOf Monitor o) => IsMonitor o Source #

Type class for types which can be safely cast to Monitor, for instance with toMonitor.

Instances

(GObject o, IsDescendantOf Monitor o) => IsMonitor o Source #
Instance details Defined in GI.Gdk.Objects.Monitor

toMonitor :: (MonadIO m, IsMonitor o) => o -> m Monitor Source #

Cast to Monitor, for types for which this is known to be safe. For general casts, use castTo.

noMonitor :: Maybe Monitor Source #

A convenience alias for Nothing :: Maybe Monitor.

Methods

getDisplay

monitorGetDisplay Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m Display	Returns: the display

Gets the display that this monitor belongs to.

Since: 3.22

getGeometry

monitorGetGeometry Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m Rectangle

Retrieves the size and position of an individual monitor within the display coordinate space. The returned geometry is in ”application pixels”, not in ”device pixels” (see monitorGetScaleFactor).

Since: 3.22

getHeightMm

monitorGetHeightMm Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m Int32	Returns: the physical height of the monitor

Gets the height in millimeters of the monitor.

Since: 3.22

getManufacturer

monitorGetManufacturer Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m (Maybe Text)	Returns: the name of the manufacturer, or `Nothing`

Gets the name of the monitor's manufacturer, if available.

getModel

monitorGetModel Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m (Maybe Text)	Returns: the monitor model, or `Nothing`

Gets the a string identifying the monitor model, if available.

getRefreshRate

monitorGetRefreshRate Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m Int32	Returns: the refresh rate in milli-Hertz, or 0

Gets the refresh rate of the monitor, if available.

The value is in milli-Hertz, so a refresh rate of 60Hz is returned as 60000.

Since: 3.22

getScaleFactor

monitorGetScaleFactor Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m Int32	Returns: the scale factor

Gets the internal scale factor that maps from monitor coordinates to the actual device pixels. On traditional systems this is 1, but on very high density outputs this can be a higher value (often 2).

This can be used if you want to create pixel based data for a particular monitor, but most of the time you’re drawing to a window where it is better to use windowGetScaleFactor instead.

Since: 3.22

getSubpixelLayout

monitorGetSubpixelLayout Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m SubpixelLayout	Returns: the subpixel layout

Gets information about the layout of red, green and blue primaries for each pixel in this monitor, if available.

Since: 3.22

getWidthMm

monitorGetWidthMm Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m Int32	Returns: the physical width of the monitor

Gets the width in millimeters of the monitor.

Since: 3.22

getWorkarea

monitorGetWorkarea Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m Rectangle

Retrieves the size and position of the “work area” on a monitor within the display coordinate space. The returned geometry is in ”application pixels”, not in ”device pixels” (see monitorGetScaleFactor).

The work area should be considered when positioning menus and similar popups, to avoid placing them below panels, docks or other desktop components.

Note that not all backends may have a concept of workarea. This function will return the monitor geometry if a workarea is not available, or does not apply.

Since: 3.22

isPrimary

monitorIsPrimary Source #

Arguments

:: (HasCallStack, MonadIO m, IsMonitor a)
=> a	`monitor`: a `Monitor`
-> m Bool	Returns: `True` if `monitor` is primary

Gets whether this monitor should be considered primary (see displayGetPrimaryMonitor).

Since: 3.22

Properties

display

No description available in the introspection data.

constructMonitorDisplay :: (IsMonitor o, IsDisplay a) => a -> IO (GValueConstruct o) Source #

Construct a GValueConstruct with valid value for the “display” property. This is rarely needed directly, but it is used by new.

getMonitorDisplay :: (MonadIO m, IsMonitor o) => o -> m Display Source #

Get the value of the “display” property. When overloading is enabled, this is equivalent to

get monitor #display

geometry

No description available in the introspection data.

getMonitorGeometry :: (MonadIO m, IsMonitor o) => o -> m (Maybe Rectangle) Source #

Get the value of the “geometry” property. When overloading is enabled, this is equivalent to

get monitor #geometry

heightMm

No description available in the introspection data.

getMonitorHeightMm :: (MonadIO m, IsMonitor o) => o -> m Int32 Source #

Get the value of the “height-mm” property. When overloading is enabled, this is equivalent to

get monitor #heightMm

manufacturer

No description available in the introspection data.

getMonitorManufacturer :: (MonadIO m, IsMonitor o) => o -> m (Maybe Text) Source #

Get the value of the “manufacturer” property. When overloading is enabled, this is equivalent to

get monitor #manufacturer

model

No description available in the introspection data.

getMonitorModel :: (MonadIO m, IsMonitor o) => o -> m (Maybe Text) Source #

Get the value of the “model” property. When overloading is enabled, this is equivalent to

get monitor #model

refreshRate

No description available in the introspection data.

getMonitorRefreshRate :: (MonadIO m, IsMonitor o) => o -> m Int32 Source #

Get the value of the “refresh-rate” property. When overloading is enabled, this is equivalent to

get monitor #refreshRate

scaleFactor

No description available in the introspection data.

getMonitorScaleFactor :: (MonadIO m, IsMonitor o) => o -> m Int32 Source #

Get the value of the “scale-factor” property. When overloading is enabled, this is equivalent to

get monitor #scaleFactor

subpixelLayout

No description available in the introspection data.

getMonitorSubpixelLayout :: (MonadIO m, IsMonitor o) => o -> m SubpixelLayout Source #

Get the value of the “subpixel-layout” property. When overloading is enabled, this is equivalent to

get monitor #subpixelLayout

widthMm

No description available in the introspection data.

getMonitorWidthMm :: (MonadIO m, IsMonitor o) => o -> m Int32 Source #

Get the value of the “width-mm” property. When overloading is enabled, this is equivalent to

get monitor #widthMm

workarea

No description available in the introspection data.

getMonitorWorkarea :: (MonadIO m, IsMonitor o) => o -> m (Maybe Rectangle) Source #

Get the value of the “workarea” property. When overloading is enabled, this is equivalent to

get monitor #workarea

Signals

invalidate

type C_MonitorInvalidateCallback = Ptr () -> Ptr () -> IO () Source #

Type for the callback on the (unwrapped) C side.

type MonitorInvalidateCallback = IO () Source #

No description available in the introspection data.

afterMonitorInvalidate :: (IsMonitor a, MonadIO m) => a -> MonitorInvalidateCallback -> m SignalHandlerId Source #

Connect a signal handler for the “invalidate” signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after monitor #invalidate callback

genClosure_MonitorInvalidate :: MonadIO m => MonitorInvalidateCallback -> m (GClosure C_MonitorInvalidateCallback) Source #

Wrap the callback into a GClosure.

mk_MonitorInvalidateCallback :: C_MonitorInvalidateCallback -> IO (FunPtr C_MonitorInvalidateCallback) Source #

Generate a function pointer callable from C code, from a C_MonitorInvalidateCallback.

noMonitorInvalidateCallback :: Maybe MonitorInvalidateCallback Source #

A convenience synonym for Nothing :: Maybe MonitorInvalidateCallback.

onMonitorInvalidate :: (IsMonitor a, MonadIO m) => a -> MonitorInvalidateCallback -> m SignalHandlerId Source #

Connect a signal handler for the “invalidate” signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on monitor #invalidate callback

wrap_MonitorInvalidateCallback :: MonitorInvalidateCallback -> C_MonitorInvalidateCallback Source #

Wrap a MonitorInvalidateCallback into a C_MonitorInvalidateCallback.