forked from AuroraMiddleware/gtk
4a0d3d7acc
Remove a boatload of "or %NULL" from nullable parameters and return values. gi-docgen generates suitable text from the annotation that we don't need to duplicate. This adds a few missing nullable annotations too.
622 lines
18 KiB
C
622 lines
18 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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/**
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* GtkBox:
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*
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* The `GtkBox` widget arranges child widgets into a single row or column.
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*
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* 
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*
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* Whether it is a row or column depends on the value of its
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* [property@Gtk.Orientable:orientation] property. Within the other
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* dimension, all children are allocated the same size. Of course, the
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* [property@Gtk.Widget:halign] and [property@Gtk.Widget:valign] properties
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* can be used on the children to influence their allocation.
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*
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* Use repeated calls to [method@Gtk.Box.append] to pack widgets into a
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* `GtkBox` from start to end. Use [method@Gtk.Box.remove] to remove widgets
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* from the `GtkBox`. [method@Gtk.Box.insert_child_after] can be used to add
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* a child at a particular position.
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*
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* Use [method@Gtk.Box.set_homogeneous] to specify whether or not all children
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* of the `GtkBox` are forced to get the same amount of space.
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*
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* Use [method@Gtk.Box.set_spacing] to determine how much space will be minimally
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* placed between all children in the `GtkBox`. Note that spacing is added
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* *between* the children.
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*
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* Use [method@Gtk.Box.reorder_child_after] to move a child to a different
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* place in the box.
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*
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* # CSS nodes
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*
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* `GtkBox` uses a single CSS node with name box.
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*
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* # Accessibility
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*
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* `GtkBox` uses the %GTK_ACCESSIBLE_ROLE_GROUP role.
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*/
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#include "config.h"
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#include "gtkbox.h"
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#include "gtkboxlayout.h"
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#include "gtkbuildable.h"
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#include "gtkintl.h"
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#include "gtkorientable.h"
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#include "gtkprivate.h"
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#include "gtktypebuiltins.h"
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#include "gtksizerequest.h"
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#include "gtkwidgetprivate.h"
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enum {
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PROP_0,
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PROP_SPACING,
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PROP_HOMOGENEOUS,
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PROP_BASELINE_POSITION,
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/* orientable */
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PROP_ORIENTATION,
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LAST_PROP = PROP_ORIENTATION
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};
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typedef struct
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{
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GtkOrientation orientation;
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gint16 spacing;
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guint homogeneous : 1;
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guint baseline_pos : 2;
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} GtkBoxPrivate;
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static GParamSpec *props[LAST_PROP] = { NULL, };
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static void gtk_box_buildable_iface_init (GtkBuildableIface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkBox, gtk_box, GTK_TYPE_WIDGET,
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G_ADD_PRIVATE (GtkBox)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
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gtk_box_buildable_iface_init))
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static void
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gtk_box_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkBox *box = GTK_BOX (object);
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GtkBoxPrivate *priv = gtk_box_get_instance_private (box);
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GtkLayoutManager *box_layout = gtk_widget_get_layout_manager (GTK_WIDGET (box));
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switch (prop_id)
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{
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case PROP_ORIENTATION:
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{
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GtkOrientation orientation = g_value_get_enum (value);
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if (priv->orientation != orientation)
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{
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priv->orientation = orientation;
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gtk_orientable_set_orientation (GTK_ORIENTABLE (box_layout),
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priv->orientation);
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gtk_widget_update_orientation (GTK_WIDGET (box), priv->orientation);
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g_object_notify (object, "orientation");
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}
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}
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break;
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case PROP_SPACING:
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gtk_box_set_spacing (box, g_value_get_int (value));
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break;
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case PROP_BASELINE_POSITION:
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gtk_box_set_baseline_position (box, g_value_get_enum (value));
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break;
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case PROP_HOMOGENEOUS:
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gtk_box_set_homogeneous (box, g_value_get_boolean (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_box_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkBox *box = GTK_BOX (object);
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GtkBoxPrivate *priv = gtk_box_get_instance_private (box);
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GtkBoxLayout *box_layout = GTK_BOX_LAYOUT (gtk_widget_get_layout_manager (GTK_WIDGET (box)));
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switch (prop_id)
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{
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case PROP_ORIENTATION:
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g_value_set_enum (value, priv->orientation);
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break;
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case PROP_SPACING:
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g_value_set_int (value, gtk_box_layout_get_spacing (box_layout));
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break;
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case PROP_BASELINE_POSITION:
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g_value_set_enum (value, gtk_box_layout_get_baseline_position (box_layout));
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break;
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case PROP_HOMOGENEOUS:
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g_value_set_boolean (value, gtk_box_layout_get_homogeneous (box_layout));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_box_compute_expand (GtkWidget *widget,
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gboolean *hexpand_p,
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gboolean *vexpand_p)
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{
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GtkWidget *w;
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gboolean hexpand = FALSE;
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gboolean vexpand = FALSE;
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for (w = gtk_widget_get_first_child (widget);
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w != NULL;
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w = gtk_widget_get_next_sibling (w))
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{
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hexpand = hexpand || gtk_widget_compute_expand (w, GTK_ORIENTATION_HORIZONTAL);
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vexpand = vexpand || gtk_widget_compute_expand (w, GTK_ORIENTATION_VERTICAL);
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}
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*hexpand_p = hexpand;
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*vexpand_p = vexpand;
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}
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static GtkSizeRequestMode
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gtk_box_get_request_mode (GtkWidget *widget)
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{
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GtkWidget *w;
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int wfh = 0, hfw = 0;
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for (w = gtk_widget_get_first_child (widget);
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w != NULL;
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w = gtk_widget_get_next_sibling (w))
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{
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GtkSizeRequestMode mode = gtk_widget_get_request_mode (w);
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switch (mode)
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{
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case GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH:
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hfw ++;
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break;
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case GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT:
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wfh ++;
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break;
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case GTK_SIZE_REQUEST_CONSTANT_SIZE:
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default:
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break;
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}
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}
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if (hfw == 0 && wfh == 0)
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return GTK_SIZE_REQUEST_CONSTANT_SIZE;
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else
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return wfh > hfw ?
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GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT :
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GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
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}
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static void
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gtk_box_dispose (GObject *object)
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{
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GtkWidget *child;
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while ((child = gtk_widget_get_first_child (GTK_WIDGET (object))))
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gtk_widget_unparent (child);
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G_OBJECT_CLASS (gtk_box_parent_class)->dispose (object);
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}
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static void
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gtk_box_class_init (GtkBoxClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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object_class->set_property = gtk_box_set_property;
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object_class->get_property = gtk_box_get_property;
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object_class->dispose = gtk_box_dispose;
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widget_class->focus = gtk_widget_focus_child;
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widget_class->compute_expand = gtk_box_compute_expand;
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widget_class->get_request_mode = gtk_box_get_request_mode;
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g_object_class_override_property (object_class,
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PROP_ORIENTATION,
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"orientation");
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/**
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* GtkBox:spacing: (attributes org.gtk.Property.get=gtk_box_get_spacing org.gtk.Property.set=gtk_box_set_spacing)
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*
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* The amount of space between children.
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*/
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props[PROP_SPACING] =
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g_param_spec_int ("spacing",
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P_("Spacing"),
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P_("The amount of space between children"),
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0, G_MAXINT, 0,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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/**
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* GtkBox:homogeneous: (attributes org.gtk.Property.get=gtk_box_get_homogeneous org.gtk.Property.set=gtk_box_set_homogeneous)
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*
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* Whether the children should all be the same size.
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*/
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props[PROP_HOMOGENEOUS] =
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g_param_spec_boolean ("homogeneous",
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P_("Homogeneous"),
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P_("Whether the children should all be the same size"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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/**
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* GtkBox:baseline-position: (attributes org.gtk.Property.get=gtk_box_get_baseline_position org.gtk.Property.set=gtk_box_set_baseline_position)
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*
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* The position of the baseline aligned widgets if extra space is available.
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*/
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props[PROP_BASELINE_POSITION] =
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g_param_spec_enum ("baseline-position",
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P_("Baseline position"),
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P_("The position of the baseline aligned widgets if extra space is available"),
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GTK_TYPE_BASELINE_POSITION,
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GTK_BASELINE_POSITION_CENTER,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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g_object_class_install_properties (object_class, LAST_PROP, props);
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gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
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gtk_widget_class_set_css_name (widget_class, I_("box"));
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gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_GROUP);
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}
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static void
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gtk_box_init (GtkBox *box)
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{
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GtkBoxPrivate *priv = gtk_box_get_instance_private (box);
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priv->orientation = GTK_ORIENTATION_HORIZONTAL;
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gtk_widget_update_orientation (GTK_WIDGET (box), priv->orientation);
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}
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static GtkBuildableIface *parent_buildable_iface;
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static void
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gtk_box_buildable_add_child (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const char *type)
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{
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if (GTK_IS_WIDGET (child))
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gtk_box_append (GTK_BOX (buildable), GTK_WIDGET (child));
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else
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parent_buildable_iface->add_child (buildable, builder, child, type);
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}
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static void
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gtk_box_buildable_iface_init (GtkBuildableIface *iface)
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{
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parent_buildable_iface = g_type_interface_peek_parent (iface);
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iface->add_child = gtk_box_buildable_add_child;
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}
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/**
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* gtk_box_new:
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* @orientation: the box’s orientation
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* @spacing: the number of pixels to place by default between children
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*
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* Creates a new `GtkBox`.
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*
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* Returns: a new `GtkBox`.
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*/
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GtkWidget*
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gtk_box_new (GtkOrientation orientation,
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int spacing)
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{
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return g_object_new (GTK_TYPE_BOX,
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"orientation", orientation,
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"spacing", spacing,
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NULL);
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}
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/**
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* gtk_box_set_homogeneous: (attributes org.gtk.Method.set_property=homogeneous)
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* @box: a `GtkBox`
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* @homogeneous: a boolean value, %TRUE to create equal allotments,
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* %FALSE for variable allotments
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*
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* Sets whether or not all children of @box are given equal space
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* in the box.
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*/
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void
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gtk_box_set_homogeneous (GtkBox *box,
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gboolean homogeneous)
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{
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GtkBoxLayout *box_layout;
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g_return_if_fail (GTK_IS_BOX (box));
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homogeneous = !!homogeneous;
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box_layout = GTK_BOX_LAYOUT (gtk_widget_get_layout_manager (GTK_WIDGET (box)));
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if (homogeneous == gtk_box_layout_get_homogeneous (box_layout))
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return;
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gtk_box_layout_set_homogeneous (box_layout, homogeneous);
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g_object_notify_by_pspec (G_OBJECT (box), props[PROP_HOMOGENEOUS]);
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}
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/**
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* gtk_box_get_homogeneous: (attributes org.gtk.Method.get_property=homogeneous)
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* @box: a `GtkBox`
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*
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* Returns whether the box is homogeneous (all children are the
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* same size).
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*
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* Returns: %TRUE if the box is homogeneous.
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*/
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gboolean
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gtk_box_get_homogeneous (GtkBox *box)
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{
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GtkLayoutManager *box_layout;
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g_return_val_if_fail (GTK_IS_BOX (box), FALSE);
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box_layout = gtk_widget_get_layout_manager (GTK_WIDGET (box));
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return gtk_box_layout_get_homogeneous (GTK_BOX_LAYOUT (box_layout));
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}
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/**
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* gtk_box_set_spacing: (attributes org.gtk.Method.set_property=spacing)
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* @box: a `GtkBox`
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* @spacing: the number of pixels to put between children
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*
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* Sets the number of pixels to place between children of @box.
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*/
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void
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gtk_box_set_spacing (GtkBox *box,
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int spacing)
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{
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GtkBoxLayout *box_layout;
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g_return_if_fail (GTK_IS_BOX (box));
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box_layout = GTK_BOX_LAYOUT (gtk_widget_get_layout_manager (GTK_WIDGET (box)));
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if (spacing == gtk_box_layout_get_spacing (box_layout))
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return;
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gtk_box_layout_set_spacing (box_layout, spacing);
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g_object_notify_by_pspec (G_OBJECT (box), props[PROP_SPACING]);
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}
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/**
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* gtk_box_get_spacing: (attributes org.gtk.Method.get_property=spacing)
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* @box: a `GtkBox`
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*
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* Gets the value set by gtk_box_set_spacing().
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*
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* Returns: spacing between children
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*/
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int
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gtk_box_get_spacing (GtkBox *box)
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{
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GtkLayoutManager *box_layout;
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g_return_val_if_fail (GTK_IS_BOX (box), 0);
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box_layout = gtk_widget_get_layout_manager (GTK_WIDGET (box));
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return gtk_box_layout_get_spacing (GTK_BOX_LAYOUT (box_layout));
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}
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/**
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* gtk_box_set_baseline_position: (attributes org.gtk.Method.set_property=baseline-position)
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* @box: a `GtkBox`
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* @position: a `GtkBaselinePosition`
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*
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* Sets the baseline position of a box.
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*
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* This affects only horizontal boxes with at least one baseline
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* aligned child. If there is more vertical space available than
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* requested, and the baseline is not allocated by the parent then
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* @position is used to allocate the baseline with respect to the
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* extra space available.
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*/
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void
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gtk_box_set_baseline_position (GtkBox *box,
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GtkBaselinePosition position)
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{
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GtkBoxLayout *box_layout;
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g_return_if_fail (GTK_IS_BOX (box));
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box_layout = GTK_BOX_LAYOUT (gtk_widget_get_layout_manager (GTK_WIDGET (box)));
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if (position == gtk_box_layout_get_baseline_position (box_layout))
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return;
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gtk_box_layout_set_baseline_position (box_layout, position);
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g_object_notify_by_pspec (G_OBJECT (box), props[PROP_BASELINE_POSITION]);
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}
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/**
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* gtk_box_get_baseline_position: (attributes org.gtk.Method.get_property=baseline-position)
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* @box: a `GtkBox`
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*
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* Gets the value set by gtk_box_set_baseline_position().
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*
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* Returns: the baseline position
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*/
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GtkBaselinePosition
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gtk_box_get_baseline_position (GtkBox *box)
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{
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GtkLayoutManager *box_layout;
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g_return_val_if_fail (GTK_IS_BOX (box), GTK_BASELINE_POSITION_CENTER);
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box_layout = gtk_widget_get_layout_manager (GTK_WIDGET (box));
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return gtk_box_layout_get_baseline_position (GTK_BOX_LAYOUT (box_layout));
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}
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/**
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* gtk_box_insert_child_after:
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* @box: a `GtkBox`
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* @child: the `GtkWidget` to insert
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* @sibling: (nullable): the sibling after which to insert @child
|
||
*
|
||
* Inserts @child in the position after @sibling in the list
|
||
* of @box children.
|
||
*
|
||
* If @sibling is %NULL, insert @child at the first position.
|
||
*/
|
||
void
|
||
gtk_box_insert_child_after (GtkBox *box,
|
||
GtkWidget *child,
|
||
GtkWidget *sibling)
|
||
{
|
||
GtkWidget *widget;
|
||
|
||
g_return_if_fail (GTK_IS_BOX (box));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (gtk_widget_get_parent (child) == NULL);
|
||
|
||
widget = GTK_WIDGET (box);
|
||
|
||
if (sibling)
|
||
{
|
||
g_return_if_fail (GTK_IS_WIDGET (sibling));
|
||
g_return_if_fail (gtk_widget_get_parent (sibling) == widget);
|
||
}
|
||
|
||
if (child == sibling)
|
||
return;
|
||
|
||
gtk_widget_insert_after (child, widget, sibling);
|
||
}
|
||
|
||
/**
|
||
* gtk_box_reorder_child_after:
|
||
* @box: a `GtkBox`
|
||
* @child: the `GtkWidget` to move, must be a child of @box
|
||
* @sibling: (nullable): the sibling to move @child after
|
||
*
|
||
* Moves @child to the position after @sibling in the list
|
||
* of @box children.
|
||
*
|
||
* If @sibling is %NULL, move @child to the first position.
|
||
*/
|
||
void
|
||
gtk_box_reorder_child_after (GtkBox *box,
|
||
GtkWidget *child,
|
||
GtkWidget *sibling)
|
||
{
|
||
GtkWidget *widget;
|
||
|
||
g_return_if_fail (GTK_IS_BOX (box));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (gtk_widget_get_parent (child) == (GtkWidget *)box);
|
||
|
||
widget = GTK_WIDGET (box);
|
||
|
||
if (sibling)
|
||
{
|
||
g_return_if_fail (GTK_IS_WIDGET (sibling));
|
||
g_return_if_fail (gtk_widget_get_parent (sibling) == widget);
|
||
}
|
||
|
||
if (child == sibling)
|
||
return;
|
||
|
||
gtk_widget_insert_after (child, widget, sibling);
|
||
}
|
||
|
||
/**
|
||
* gtk_box_append:
|
||
* @box: a `GtkBox`
|
||
* @child: the `GtkWidget` to append
|
||
*
|
||
* Adds @child as the last child to @box.
|
||
*/
|
||
void
|
||
gtk_box_append (GtkBox *box,
|
||
GtkWidget *child)
|
||
{
|
||
g_return_if_fail (GTK_IS_BOX (box));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (gtk_widget_get_parent (child) == NULL);
|
||
|
||
gtk_widget_insert_before (child, GTK_WIDGET (box), NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_box_prepend:
|
||
* @box: a `GtkBox`
|
||
* @child: the `GtkWidget` to prepend
|
||
*
|
||
* Adds @child as the first child to @box.
|
||
*/
|
||
void
|
||
gtk_box_prepend (GtkBox *box,
|
||
GtkWidget *child)
|
||
{
|
||
g_return_if_fail (GTK_IS_BOX (box));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (gtk_widget_get_parent (child) == NULL);
|
||
|
||
gtk_widget_insert_after (child, GTK_WIDGET (box), NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_box_remove:
|
||
* @box: a `GtkBox`
|
||
* @child: the child to remove
|
||
*
|
||
* Removes a child widget from @box.
|
||
*
|
||
* The child must have been added before with
|
||
* [method@Gtk.Box.append], [method@Gtk.Box.prepend], or
|
||
* [method@Gtk.Box.insert_child_after].
|
||
*/
|
||
void
|
||
gtk_box_remove (GtkBox *box,
|
||
GtkWidget *child)
|
||
{
|
||
g_return_if_fail (GTK_IS_BOX (box));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (gtk_widget_get_parent (child) == (GtkWidget *)box);
|
||
|
||
gtk_widget_unparent (child);
|
||
}
|