GtkFixed

GtkFixed — A container which allows you to position widgets at fixed coordinates

Functions

Types and Values

struct GtkFixed

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GtkWidget
            ╰── GtkFixed

Implemented Interfaces

GtkFixed implements AtkImplementorIface, GtkBuildable and GtkConstraintTarget.

Includes

#include <gtk/gtk.h>

Description

The GtkFixed widget is a container which can place child widgets at fixed positions and with fixed sizes, given in pixels. 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 GUI 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.

Functions

gtk_fixed_new ()

GtkWidget *
gtk_fixed_new (void);

Creates a new GtkFixed.

Returns

a new GtkFixed.


gtk_fixed_put ()

void
gtk_fixed_put (GtkFixed *fixed,
               GtkWidget *widget,
               double x,
               double y);

Adds a widget to a GtkFixed container and assigns a translation transformation to the given x and y coordinates to it.

Parameters

fixed

a GtkFixed.

 

widget

the widget to add.

 

x

the horizontal position to place the widget at.

 

y

the vertical position to place the widget at.

 

gtk_fixed_remove ()

void
gtk_fixed_remove (GtkFixed *fixed,
                  GtkWidget *widget);

Removes a child from fixed , after it has been added with gtk_fixed_put().

Parameters

fixed

a GtkFixed

 

widget

the child widget to remove

 

gtk_fixed_move ()

void
gtk_fixed_move (GtkFixed *fixed,
                GtkWidget *widget,
                double x,
                double y);

Sets a translation transformation to the given x and y coordinates to the child widget of the given GtkFixed container.

Parameters

fixed

a GtkFixed.

 

widget

the child widget.

 

x

the horizontal position to move the widget to.

 

y

the vertical position to move the widget to.

 

Types and Values

struct GtkFixed

struct GtkFixed;