GtkLayout

GTK+ Reference Manual
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Object Hierarchy


  GObject
   +----GtkObject
         +----GtkWidget
               +----GtkContainer
                     +----GtkLayout

Properties


  "hadjustment"          GtkAdjustment        : Read / Write
  "vadjustment"          GtkAdjustment        : Read / Write
  "width"                guint                : Read / Write
  "height"               guint                : Read / Write

Child Properties


  "x"                    gint                 : Read / Write
  "y"                    gint                 : Read / Write

Signal Prototypes


"set-scroll-adjustments"
            void        user_function      (GtkLayout *layout,
                                            GtkAdjustment *arg1,
                                            GtkAdjustment *arg2,
                                            gpointer user_data);

Description

GtkLayout is similar to GtkDrawingArea in that it's a "blank slate" and doesn't do anything but paint a blank background by default. It's different in that it supports scrolling natively (you can add it to a GtkScrolledWindow), and it can contain child widgets, since it's a GtkContainer. However if you're just going to draw, a GtkDrawingArea is a better choice since it has lower overhead.

When handling expose events on a GtkLayout, you must draw to GTK_LAYOUT (layout)->bin_window, rather than to GTK_WIDGET (layout)->window, as you would for a drawing area.

Details

struct GtkLayout

struct GtkLayout {
  GdkWindow *bin_window;

};

gtk_layout_new ()

GtkWidget*  gtk_layout_new                  (GtkAdjustment *hadjustment,
                                             GtkAdjustment *vadjustment);

Creates a new GtkLayout. Unless you have a specific adjustment you'd like the layout to use for scrolling, pass NULL for hadjustment and vadjustment.

`hadjustment` :	horizontal scroll adjustment, or `NULL`
`vadjustment` :	vertical scroll adjustment, or `NULL`
Returns :	a new GtkLayout

gtk_layout_put ()

void        gtk_layout_put                  (GtkLayout *layout,
                                             GtkWidget *child_widget,
                                             gint x,
                                             gint y);

Adds child_widget to layout, at position (x,y). layout becomes the new parent container of child_widget.

`layout` :	a GtkLayout
`child_widget` :	child widget
`x` :	X position of child widget
`y` :	Y position of child widget

gtk_layout_move ()

void        gtk_layout_move                 (GtkLayout *layout,
                                             GtkWidget *child_widget,
                                             gint x,
                                             gint y);

Moves a current child of layout to a new position.

`layout` :	a GtkLayout
`child_widget` :	a current child of `layout`
`x` :	X position to move to
`y` :	Y position to move to

gtk_layout_set_size ()

void        gtk_layout_set_size             (GtkLayout *layout,
                                             guint width,
                                             guint height);

Sets the size of the scrollable area of the layout.

`layout` :	a GtkLayout
`width` :	width of entire scrollable area
`height` :	height of entire scrollable area

gtk_layout_get_size ()

void        gtk_layout_get_size             (GtkLayout *layout,
                                             guint *width,
                                             guint *height);

Gets the size that has been set on the layout, and that determines the total extents of the layout's scrollbar area. See gtk_layout_set_size().

`layout` :	a GtkLayout
`width` :	location to store the width set on `layout`, or `NULL`
`height` :	location to store the height set on `layout`, or `NULL`

gtk_layout_freeze ()

void        gtk_layout_freeze               (GtkLayout *layout);

Warning

gtk_layout_freeze is deprecated and should not be used in newly-written code.

This is a deprecated function, it doesn't do anything useful.

layout : a GtkLayout

gtk_layout_thaw ()

void        gtk_layout_thaw                 (GtkLayout *layout);

Warning

gtk_layout_thaw is deprecated and should not be used in newly-written code.

This is a deprecated function, it doesn't do anything useful.

layout : a GtkLayout

gtk_layout_get_hadjustment ()

GtkAdjustment* gtk_layout_get_hadjustment   (GtkLayout *layout);

This function should only be called after the layout has been placed in a GtkScrolledWindow or otherwise configured for scrolling. It returns the GtkAdjustment used for communication between the horizontal scrollbar and layout.

See GtkScrolledWindow, GtkScrollbar, GtkAdjustment for details.

`layout` :	a GtkLayout
Returns :	horizontal scroll adjustment

gtk_layout_get_vadjustment ()

GtkAdjustment* gtk_layout_get_vadjustment   (GtkLayout *layout);

This function should only be called after the layout has been placed in a GtkScrolledWindow or otherwise configured for scrolling. It returns the GtkAdjustment used for communication between the vertical scrollbar and layout.

See GtkScrolledWindow, GtkScrollbar, GtkAdjustment for details.

`layout` :	a GtkLayout
Returns :	vertical scroll adjustment

gtk_layout_set_hadjustment ()

void        gtk_layout_set_hadjustment      (GtkLayout *layout,
                                             GtkAdjustment *adjustment);

Sets the horizontal scroll adjustment for the layout.

See GtkScrolledWindow, GtkScrollbar, GtkAdjustment for details.

`layout` :	a GtkLayout
`adjustment` :	new scroll adjustment

gtk_layout_set_vadjustment ()

void        gtk_layout_set_vadjustment      (GtkLayout *layout,
                                             GtkAdjustment *adjustment);

Sets the vertical scroll adjustment for the layout.

See GtkScrolledWindow, GtkScrollbar, GtkAdjustment for details.

`layout` :	a GtkLayout
`adjustment` :	new scroll adjustment

Properties

"hadjustment" (GtkAdjustment : Read / Write): The GtkAdjustment for the horizontal position.
"vadjustment" (GtkAdjustment : Read / Write): The GtkAdjustment for the vertical position.
"width" (guint : Read / Write): The width of the layout.
"height" (guint : Read / Write): The height of the layout.

Child Properties

"x" (gint : Read / Write): X position of child widget
"y" (gint : Read / Write): Y position of child widget

Signals

The "set-scroll-adjustments" signal

void        user_function                  (GtkLayout *layout,
                                            GtkAdjustment *arg1,
                                            GtkAdjustment *arg2,
                                            gpointer user_data);

`layout` :	the object which received the signal.
`arg1` :
`arg2` :
`user_data` :	user data set when the signal handler was connected.

GtkLayout

Name

Synopsis

Object Hierarchy

Properties

Child Properties

Signal Prototypes

Description

Details

struct GtkLayout

gtk_layout_new ()

gtk_layout_put ()

gtk_layout_move ()

gtk_layout_set_size ()

gtk_layout_get_size ()

gtk_layout_freeze ()

gtk_layout_thaw ()

gtk_layout_get_hadjustment ()

gtk_layout_get_vadjustment ()

gtk_layout_set_hadjustment ()

gtk_layout_set_vadjustment ()

Properties

Child Properties

Signals

The "set-scroll-adjustments" signal

See Also