Class Fixed
- All Implemented Interfaces:
Proxy
,Accessible
,Buildable
,ConstraintTarget
GtkFixed
places its child widgets at fixed positions and with fixed sizes.
GtkFixed
performs no automatic layout management.
For most applications, you should not use this container! It keeps
you from having to learn about the other GTK containers, but it
results in broken applications. With GtkFixed
, the following
things will result in truncated text, overlapping widgets, and
other display bugs:
- Themes, which may change widget sizes.
- Fonts other than the one you used to write the app will of course change the size of widgets containing text; keep in mind that users may use a larger font because of difficulty reading the default, or they may be using a different OS that provides different fonts.
- Translation of text into other languages changes its size. Also, display of non-English text will use a different font in many cases.
In addition, GtkFixed
does not pay attention to text direction and
thus may produce unwanted results if your app is run under right-to-left
languages such as Hebrew or Arabic. That is: normally GTK will order
containers appropriately for the text direction, e.g. to put labels to
the right of the thing they label when using an RTL language, but it can’t
do that with GtkFixed
. So if you need to reorder widgets depending on
the text direction, you would need to manually detect it and adjust child
positions accordingly.
Finally, fixed positioning makes it kind of annoying to add/remove UI elements, since you have to reposition all the other elements. This is a long-term maintenance problem for your application.
If you know none of these things are an issue for your application,
and prefer the simplicity of GtkFixed
, by all means use the
widget. But you should be aware of the tradeoffs.
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Nested Class Summary
Modifier and TypeClassDescriptionstatic class
Fixed.Builder<B extends Fixed.Builder<B>>
Inner class implementing a builder pattern to construct a GObject with properties.static class
Nested classes/interfaces inherited from class org.gnome.gtk.Widget
Widget.DestroyCallback, Widget.DirectionChangedCallback, Widget.HideCallback, Widget.KeynavFailedCallback, Widget.MapCallback, Widget.MnemonicActivateCallback, Widget.MoveFocusCallback, Widget.QueryTooltipCallback, Widget.RealizeCallback, Widget.ShowCallback, Widget.StateFlagsChangedCallback, Widget.UnmapCallback, Widget.UnrealizeCallback, Widget.WidgetClass, Widget.WidgetImpl
Nested classes/interfaces inherited from class org.gnome.gobject.InitiallyUnowned
InitiallyUnowned.InitiallyUnownedClass
Nested classes/interfaces inherited from class org.gnome.gobject.GObject
GObject.NotifyCallback, GObject.ObjectClass
Nested classes/interfaces inherited from interface org.gnome.gtk.Accessible
Accessible.AccessibleImpl, Accessible.AccessibleInterface
Nested classes/interfaces inherited from interface org.gnome.gtk.Buildable
Buildable.BuildableIface, Buildable.BuildableImpl
Nested classes/interfaces inherited from interface org.gnome.gtk.ConstraintTarget
ConstraintTarget.ConstraintTargetImpl, ConstraintTarget.ConstraintTargetInterface
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Constructor Summary
ConstructorDescriptionFixed()
Creates a newGtkFixed
.Fixed
(MemorySegment address) Create a Fixed proxy instance for the provided memory address. -
Method Summary
Modifier and TypeMethodDescriptionprotected Fixed
asParent()
Returns this instance as if it were its parent type.static Fixed.Builder
<? extends Fixed.Builder> builder()
AFixed.Builder
object constructs aFixed
with the specified properties.void
Retrieves the translation transformation of the given childGtkWidget
in theGtkFixed
.getChildTransform
(Widget widget) Retrieves the transformation forwidget
set using gtk_fixed_set_child_transform().static MemoryLayout
The memory layout of the native struct.static Type
getType()
Get the GType of the Fixed classvoid
Sets a translation transformation to the givenx
andy
coordinates to the childwidget
of theGtkFixed
.void
Adds a widget to aGtkFixed
at the given position.void
Removes a child from this Fixed.void
setChildTransform
(Widget widget, @Nullable Transform transform) Sets the transformation forwidget
.Methods inherited from class org.gnome.gtk.Widget
actionSetEnabled, activateActionIfExists, activateDefault, activateWidget, addController, addCssClass, addMnemonicLabel, addTickCallback, allocate, childFocus, computeBounds, computeExpand, computeExpand, computePoint, computeTransform, contains, createPangoContext, createPangoLayout, cssChanged, directionChanged, disposeTemplate, dragCheckThreshold, emitDestroy, emitDirectionChanged, emitHide, emitKeynavFailed, emitMap, emitMnemonicActivate, emitMoveFocus, emitQueryTooltip, emitRealize, emitShow, emitStateFlagsChanged, emitUnmap, emitUnrealize, errorBell, focus, getAllocatedBaseline, getAllocatedHeight, getAllocatedWidth, getAllocation, getAncestor, getBaseline, getCanFocus, getCanTarget, getChildVisible, getClipboard, getColor, getCssClasses, getCssName, getCursor, getDefaultDirection, getDirection, getDisplay, getFirstChild, getFocusable, getFocusChild, getFocusOnClick, getFontMap, getFontOptions, getFrameClock, getHalign, getHasTooltip, getHeight, getHexpand, getHexpandSet, getLastChild, getLayoutManager, getMapped, getMarginBottom, getMarginEnd, getMarginStart, getMarginTop, getName, getNative, getNextSibling, getOpacity, getOverflow, getPangoContext, getParent, getPreferredSize, getPrevSibling, getPrimaryClipboard, getRealized, getReceivesDefault, getRequestMode, getRoot, getScaleFactor, getSensitive, getSettings, getSize, getSizeRequest, getStateFlags, getStyleContext, getTemplateChild, getTooltipMarkup, getTooltipText, getValign, getVexpand, getVexpandSet, getVisible, getWidth, grabFocus, hasCssClass, hasDefault, hasFocus, hasVisibleFocus, hide, inDestruction, initTemplate, insertActionGroup, insertAfter, insertBefore, isAncestor, isDrawable, isFocus, isSensitive, isVisible, keynavFailed, listMnemonicLabels, map, measure, mnemonicActivate, moveFocus, observeChildren, observeControllers, onDestroy, onDirectionChanged, onHide, onKeynavFailed, onMap, onMnemonicActivate, onMoveFocus, onQueryTooltip, onRealize, onShow, onStateFlagsChanged, onUnmap, onUnrealize, pick, pick, queryTooltip, queueAllocate, queueDraw, queueResize, realize, removeController, removeCssClass, removeMnemonicLabel, removeTickCallback, root, setCanFocus, setCanTarget, setChildVisible, setCssClasses, setCursor, setCursorFromName, setDefaultDirection, setDirection, setFocusable, setFocusChild, setFocusOnClick, setFontMap, setFontOptions, setHalign, setHasTooltip, setHexpand, setHexpandSet, setLayoutManager, setMarginBottom, setMarginEnd, setMarginStart, setMarginTop, setName, setOpacity, setOverflow, setParent, setReceivesDefault, setSensitive, setSizeRequest, setStateFlags, setStateFlags, setTooltipMarkup, setTooltipText, setValign, setVexpand, setVexpandSet, setVisible, shouldLayout, show, sizeAllocate, sizeAllocate, snapshot, snapshotChild, stateFlagsChanged, systemSettingChanged, translateCoordinates, triggerTooltipQuery, unmap, unparent, unrealize, unroot, unsetStateFlags, unsetStateFlags
Methods inherited from class org.gnome.gobject.GObject
addToggleRef, addWeakPointer, bindProperty, bindProperty, bindProperty, bindPropertyFull, bindPropertyFull, bindPropertyWithClosures, bindPropertyWithClosures, compatControl, connect, connect, connect, constructed, disconnect, dispatchPropertiesChanged, dispose, dupData, dupQdata, emit, emitNotify, finalize_, forceFloating, freezeNotify, get, getData, getProperty, getProperty, getProperty, getQdata, getv, interfaceFindProperty, interfaceInstallProperty, interfaceListProperties, isFloating, newInstance, newInstance, newInstance, newInstance, newv, notify_, notify_, notifyByPspec, onNotify, ref, refSink, removeToggleRef, removeWeakPointer, replaceData, replaceQdata, runDispose, set, setData, setDataFull, setProperty, setProperty, setProperty, setQdata, setQdataFull, setv, stealData, stealQdata, takeRef, thawNotify, unref, watchClosure, weakRef, weakUnref, withProperties
Methods inherited from class org.gnome.gobject.TypeInstance
callParent, callParent, getPrivate, readGClass, writeGClass
Methods inherited from class io.github.jwharm.javagi.base.ProxyInstance
equals, handle, hashCode
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.gnome.gtk.Accessible
announce, getAccessibleParent, getAccessibleRole, getAtContext, getBounds, getFirstAccessibleChild, getNextAccessibleSibling, getPlatformState, resetProperty, resetRelation, resetState, setAccessibleParent, updateNextAccessibleSibling, updateProperty, updateRelation, updateState
Methods inherited from interface org.gnome.gtk.Buildable
getBuildableId
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Constructor Details
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Fixed
Create a Fixed proxy instance for the provided memory address.- Parameters:
address
- the memory address of the native object
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Fixed
public Fixed()Creates a newGtkFixed
.
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Method Details
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getType
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getMemoryLayout
The memory layout of the native struct.- Returns:
- the memory layout
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asParent
Returns this instance as if it were its parent type. This is mostly synonymous to the Javasuper
keyword, but will set the native typeclass function pointers to the parent type. When overriding a native virtual method in Java, "chaining up" withsuper.methodName()
doesn't work, because it invokes the overridden function pointer again. To chain up, callasParent().methodName()
. This will call the native function pointer of this virtual method in the typeclass of the parent type. -
getChildPosition
Retrieves the translation transformation of the given childGtkWidget
in theGtkFixed
.See also:
getChildTransform(org.gnome.gtk.Widget)
.- Parameters:
widget
- a child of this Fixedx
- the horizontal position of thewidget
y
- the vertical position of thewidget
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getChildTransform
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move
Sets a translation transformation to the givenx
andy
coordinates to the childwidget
of theGtkFixed
.- Parameters:
widget
- the child widgetx
- the horizontal position to move the widget toy
- the vertical position to move the widget to
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put
Adds a widget to aGtkFixed
at the given position.- Parameters:
widget
- the widget to addx
- the horizontal position to place the widget aty
- the vertical position to place the widget at
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remove
Removes a child from this Fixed.- Parameters:
widget
- the child widget to remove
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setChildTransform
Sets the transformation forwidget
.This is a convenience function that retrieves the
FixedLayoutChild
instance associated towidget
and callsFixedLayoutChild.setTransform(org.gnome.gsk.Transform)
.- Parameters:
widget
- aGtkWidget
, child of this Fixedtransform
- the transformation assigned towidget
to resetwidget
's transform
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builder
AFixed.Builder
object constructs aFixed
with the specified properties. Use the variousset...()
methods to set properties, and finish construction withFixed.Builder.build()
.
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