Screen

#GdkScreen objects are the GDK representation of the screen on which windows can be displayed and on which the pointer moves. X originally identified screens with physical screens, but nowadays it is more common to have a single #GdkScreen which combines several physical monitors (see gdk.screen.Screen.getNMonitors).

GdkScreen is used throughout GDK and GTK+ to specify which screen the top level windows are to be displayed on. it is also used to query the screen specification and default settings such as the default visual (gdk.screen.Screen.getSystemVisual), the dimensions of the physical monitors (gdk.screen.Screen.getMonitorGeometry), etc.

class Screen : ObjectWrap {

this(void* ptr, Flag!"Take" take);

static GType _getGType();

GType _gType [@property getter];

Screen self();

static ScreenGidBuilder builder();

void* fontOptions [@property getter];

void* fontOptions [@property setter];

double resolution [@property getter];

double resolution [@property setter];

static gdk.screen.Screen getDefault();

static int height();

static int heightMm();

static int width();

static int widthMm();

gdk.window.Window getActiveWindow();

gdk.display.Display getDisplay();

cairo.font_options.FontOptions getFontOptions();

int getHeight();

int getHeightMm();

int getMonitorAtPoint(int x, int y);

int getMonitorAtWindow(gdk.window.Window window);

void getMonitorGeometry(int monitorNum, gdk.rectangle.Rectangle dest);

int getMonitorHeightMm(int monitorNum);

string getMonitorPlugName(int monitorNum);

int getMonitorScaleFactor(int monitorNum);

int getMonitorWidthMm(int monitorNum);

void getMonitorWorkarea(int monitorNum, gdk.rectangle.Rectangle dest);

int getNMonitors();

int getNumber();

int getPrimaryMonitor();

double getResolution();

gdk.visual.Visual getRgbaVisual();

gdk.window.Window getRootWindow();

bool getSetting(string name, gobject.value.Value value);

gdk.visual.Visual getSystemVisual();

gdk.window.Window[] getToplevelWindows();

int getWidth();

int getWidthMm();

gdk.window.Window[] getWindowStack();

bool isComposited();

gdk.visual.Visual[] listVisuals();

string makeDisplayName();

void setFontOptions(cairo.font_options.FontOptions options);

void setResolution(double dpi);

gulong connectCompositedChanged(T callback, Flag!"After" after);

gulong connectMonitorsChanged(T callback, Flag!"After" after);

gulong connectSizeChanged(T callback, Flag!"After" after);

}

Constructors

this this(void* ptr, Flag!"Take" take)

Members

Functions

connectCompositedChanged gulong connectCompositedChanged(T callback, Flag!"After" after): Connect to CompositedChanged signal.
connectMonitorsChanged gulong connectMonitorsChanged(T callback, Flag!"After" after): Connect to MonitorsChanged signal.
connectSizeChanged gulong connectSizeChanged(T callback, Flag!"After" after): Connect to SizeChanged signal.
getActiveWindow gdk.window.Window getActiveWindow(): Returns the screen’s currently active window.
getDisplay gdk.display.Display getDisplay(): Gets the display to which the screen belongs.
getFontOptions cairo.font_options.FontOptions getFontOptions(): Gets any options previously set with gdk.screen.Screen.setFontOptions.
getHeight int getHeight(): Gets the height of screen in pixels. The returned size is in ”application pixels”, not in ”device pixels” (see gdk.screen.Screen.getMonitorScaleFactor).
getHeightMm int getHeightMm(): Returns the height of screen in millimeters.
getMonitorAtPoint int getMonitorAtPoint(int x, int y): Returns the monitor number in which the point (x,y) is located.
getMonitorAtWindow int getMonitorAtWindow(gdk.window.Window window): Returns the number of the monitor in which the largest area of the bounding rectangle of window resides.
getMonitorGeometry void getMonitorGeometry(int monitorNum, gdk.rectangle.Rectangle dest): Retrieves the #GdkRectangle representing the size and position of the individual monitor within the entire screen area. The returned geometry is in ”application pixels”, not in ”device pixels” (see gdk.screen.Screen.getMonitorScaleFactor).
getMonitorHeightMm int getMonitorHeightMm(int monitorNum): Gets the height in millimeters of the specified monitor.
getMonitorPlugName string getMonitorPlugName(int monitorNum): Returns the output name of the specified monitor. Usually something like VGA, DVI, or TV, not the actual product name of the display device.
getMonitorScaleFactor int getMonitorScaleFactor(int monitorNum): Returns 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).
getMonitorWidthMm int getMonitorWidthMm(int monitorNum): Gets the width in millimeters of the specified monitor, if available.
getMonitorWorkarea void getMonitorWorkarea(int monitorNum, gdk.rectangle.Rectangle dest): Retrieves the #GdkRectangle representing the size and position of the “work area” on a monitor within the entire screen area. The returned geometry is in ”application pixels”, not in ”device pixels” (see gdk.screen.Screen.getMonitorScaleFactor).
getNMonitors int getNMonitors(): Returns the number of monitors which screen consists of.
getNumber int getNumber(): Gets the index of screen among the screens in the display to which it belongs. (See gdk.screen.Screen.getDisplay)
getPrimaryMonitor int getPrimaryMonitor(): Gets the primary monitor for screen. The primary monitor is considered the monitor where the “main desktop” lives. While normal application windows typically allow the window manager to place the windows, specialized desktop applications such as panels should place themselves on the primary monitor.
getResolution double getResolution(): Gets the resolution for font handling on the screen; see gdk.screen.Screen.setResolution for full details.
getRgbaVisual gdk.visual.Visual getRgbaVisual(): Gets a visual to use for creating windows with an alpha channel. The windowing system on which GTK+ is running may not support this capability, in which case null will be returned. Even if a non-null value is returned, its possible that the window’s alpha channel won’t be honored when displaying the window on the screen: in particular, for X an appropriate windowing manager and compositing manager must be running to provide appropriate display.
getRootWindow gdk.window.Window getRootWindow(): Gets the root window of screen.
getSetting bool getSetting(string name, gobject.value.Value value): Retrieves a desktop-wide setting such as double-click time for the #GdkScreen screen.
getSystemVisual gdk.visual.Visual getSystemVisual(): Get the system’s default visual for screen. This is the visual for the root window of the display. The return value should not be freed.
getToplevelWindows gdk.window.Window[] getToplevelWindows(): Obtains a list of all toplevel windows known to GDK on the screen screen. A toplevel window is a child of the root window (see gdk.global.getDefaultRootWindow).
getWidth int getWidth(): Gets the width of screen in pixels. The returned size is in ”application pixels”, not in ”device pixels” (see gdk.screen.Screen.getMonitorScaleFactor).
getWidthMm int getWidthMm(): Gets the width of screen in millimeters.
getWindowStack gdk.window.Window[] getWindowStack(): Returns a #GList of #GdkWindows representing the current window stack.
isComposited bool isComposited(): Returns whether windows with an RGBA visual can reasonably be expected to have their alpha channel drawn correctly on the screen.
listVisuals gdk.visual.Visual[] listVisuals(): Lists the available visuals for the specified screen. A visual describes a hardware image data format. For example, a visual might support 24-bit color, or 8-bit color, and might expect pixels to be in a certain format.
makeDisplayName string makeDisplayName(): Determines the name to pass to gdk.display.Display.open to get a #GdkDisplay with this screen as the default screen.
self Screen self(): Returns this, for use in with statements.
setFontOptions void setFontOptions(cairo.font_options.FontOptions options): Sets the default font options for the screen. These options will be set on any #PangoContext’s newly created with gdk.global.pangoContextGetForScreen. Changing the default set of font options does not affect contexts that have already been created.
setResolution void setResolution(double dpi): Sets the resolution for font handling on the screen. This is a scale factor between points specified in a #PangoFontDescription and cairo units. The default value is 96, meaning that a 10 point font will be 13 units high. (10 * 96. / 72. = 13.3).

Properties

_gType GType _gType [@property getter]
fontOptions void* fontOptions [@property getter]
fontOptions void* fontOptions [@property setter]
resolution double resolution [@property getter]
resolution double resolution [@property setter]

Static functions

_getGType GType _getGType()
builder ScreenGidBuilder builder(): Get builder for gdk.screen.Screen
getDefault gdk.screen.Screen getDefault(): Gets the default screen for the default display. (See gdk_display_get_default ()).
height int height(): Gets the height of the default screen in pixels. The returned size is in ”application pixels”, not in ”device pixels” (see gdk.screen.Screen.getMonitorScaleFactor).
heightMm int heightMm(): Returns the height of the default screen in millimeters. Note that on many X servers this value will not be correct.
width int width(): Gets the width of the default screen in pixels. The returned size is in ”application pixels”, not in ”device pixels” (see gdk.screen.Screen.getMonitorScaleFactor).
widthMm int widthMm(): Returns the width of the default screen in millimeters. Note that on many X servers this value will not be correct.

Inherited Members

From ObjectWrap

_setGObject void _setGObject(void* cObj, Flag!"Take" take): Set the GObject of a D ObjectWrap wrapper.
_cPtr void* _cPtr(Flag!"Dup" dup): Get a pointer to the underlying C object.
_ref void* _ref(void* gObj): Calls g_object_ref() on a GObject.
_unref _unref(void* gObj): Calls g_object_unref() on a GObject.
_getGType GType _getGType(): Get the GType of an object.
_gType GType _gType [@property getter]: GObject GType property.
self ObjectWrap self(): Convenience method to return this cast to a type. For use in D with statements.
_getDObject T _getDObject(void* cptr, Flag!"Take" take): Template to get the D object from a C GObject and cast it to the given D object type.
connectSignalClosure gulong connectSignalClosure(string signalDetail, DClosure closure, Flag!"After" after): Connect a D closure to an object signal.
setProperty void setProperty(string propertyName, T val): Template for setting a GObject property.
getProperty T getProperty(string propertyName): Template for getting a GObject property.
compatControl size_t compatControl(size_t what, void* data)
bindProperty gobject.binding.Binding bindProperty(string sourceProperty, gobject.object.ObjectWrap target, string targetProperty, gobject.types.BindingFlags flags): Creates a binding between source_property on source and target_property on target.
bindPropertyFull gobject.binding.Binding bindPropertyFull(string sourceProperty, gobject.object.ObjectWrap target, string targetProperty, gobject.types.BindingFlags flags, gobject.closure.Closure transformTo, gobject.closure.Closure transformFrom): Creates a binding between source_property on source and target_property on target, allowing you to set the transformation functions to be used by the binding.
forceFloating void forceFloating(): This function is intended for #GObject implementations to re-enforce a floating[floating-ref] object reference. Doing this is seldom required: all #GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling gobject.object.ObjectWrap.refSink.
freezeNotify void freezeNotify(): Increases the freeze count on object. If the freeze count is non-zero, the emission of "notify" signals on object is stopped. The signals are queued until the freeze count is decreased to zero. Duplicate notifications are squashed so that at most one #GObject::notify signal is emitted for each property modified while the object is frozen.
getData void* getData(string key): Gets a named field from the objects table of associations (see gobject.object.ObjectWrap.setData).
getProperty void getProperty(string propertyName, gobject.value.Value value): Gets a property of an object.
getQdata void* getQdata(glib.types.Quark quark): This function gets back user data pointers stored via gobject.object.ObjectWrap.setQdata.
getv void getv(string[] names, gobject.value.Value[] values): Gets n_properties properties for an object. Obtained properties will be set to values. All properties must be valid. Warnings will be emitted and undefined behaviour may result if invalid properties are passed in.
isFloating bool isFloating(): Checks whether object has a floating[floating-ref] reference.
notify void notify(string propertyName): Emits a "notify" signal for the property property_name on object.
notifyByPspec void notifyByPspec(gobject.param_spec.ParamSpec pspec): Emits a "notify" signal for the property specified by pspec on object.
refSink gobject.object.ObjectWrap refSink(): Increase the reference count of object, and possibly remove the floating[floating-ref] reference, if object has a floating reference.
runDispose void runDispose(): Releases all references to other objects. This can be used to break reference cycles.
setData void setData(string key, void* data): Each object carries around a table of associations from strings to pointers. This function lets you set an association.
setProperty void setProperty(string propertyName, gobject.value.Value value): Sets a property on an object.
stealData void* stealData(string key): Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
stealQdata void* stealQdata(glib.types.Quark quark): This function gets back user data pointers stored via gobject.object.ObjectWrap.setQdata and removes the data from object without invoking its destroy() function (if any was set). Usually, calling this function is only required to update user data pointers with a destroy notifier, for example:
thawNotify void thawNotify(): Reverts the effect of a previous call to gobject.object.ObjectWrap.freezeNotify. The freeze count is decreased on object and when it reaches zero, queued "notify" signals are emitted.
watchClosure void watchClosure(gobject.closure.Closure closure): This function essentially limits the life time of the closure to the life time of the object. That is, when the object is finalized, the closure is invalidated by calling gobject.closure.Closure.invalidate on it, in order to prevent invocations of the closure with a finalized (nonexisting) object. Also, gobject.object.ObjectWrap.ref_ and gobject.object.ObjectWrap.unref are added as marshal guards to the closure, to ensure that an extra reference count is held on object during invocation of the closure. Usually, this function will be called on closures that use this object as closure data.
connectNotify gulong connectNotify(string detail, T callback, Flag!"After" after): Connect to Notify signal.

gdk screen classes