forked from AuroraMiddleware/gtk
c76c1a46e4
Thet widget-based API for constraint target and source properties is unused, and not really necessary.
101 lines
4.4 KiB
C
101 lines
4.4 KiB
C
/* gtkconstraint.h: Constraint between two widgets
|
||
* Copyright 2019 GNOME Foundation
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2.1 of the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||
*
|
||
* Author: Emmanuele Bassi
|
||
*/
|
||
|
||
#pragma once
|
||
|
||
#include <gtk/gtktypes.h>
|
||
#include <gtk/gtkenums.h>
|
||
|
||
G_BEGIN_DECLS
|
||
|
||
typedef struct _GtkConstraintTarget GtkConstraintTarget;
|
||
|
||
#define GTK_TYPE_CONSTRAINT_TARGET (gtk_constraint_target_get_type ())
|
||
|
||
/**
|
||
* GtkConstraintTarget:
|
||
*
|
||
* The GtkConstraintTarget interface is implemented by objects that
|
||
* can be used as source or target in #GtkConstraints. Besides
|
||
* #GtkWidget, it is also implemented by #GtkConstraintGuide.
|
||
*/
|
||
|
||
GDK_AVAILABLE_IN_ALL
|
||
G_DECLARE_INTERFACE (GtkConstraintTarget, gtk_constraint_target, GTK, CONSTRAINT_TARGET, GObject)
|
||
|
||
#define GTK_TYPE_CONSTRAINT (gtk_constraint_get_type ())
|
||
|
||
/**
|
||
* GtkConstraint:
|
||
*
|
||
* An object describing the relation between two widget attributes.
|
||
*
|
||
* All relations are in the form:
|
||
*
|
||
* |[<!-- language=plain -->
|
||
* target.attr_name = source.attr_name × multiplier + constant
|
||
* ]|
|
||
*
|
||
* A #GtkConstraint is immutable once it's created.
|
||
*/
|
||
GDK_AVAILABLE_IN_ALL
|
||
G_DECLARE_FINAL_TYPE (GtkConstraint, gtk_constraint, GTK, CONSTRAINT, GObject)
|
||
|
||
GDK_AVAILABLE_IN_ALL
|
||
GtkConstraint * gtk_constraint_new (gpointer target,
|
||
GtkConstraintAttribute target_attribute,
|
||
GtkConstraintRelation relation,
|
||
gpointer source,
|
||
GtkConstraintAttribute source_attribute,
|
||
double multiplier,
|
||
double constant,
|
||
int strength);
|
||
GDK_AVAILABLE_IN_ALL
|
||
GtkConstraint * gtk_constraint_new_constant (gpointer target,
|
||
GtkConstraintAttribute target_attribute,
|
||
GtkConstraintRelation relation,
|
||
double constant,
|
||
int strength);
|
||
|
||
GDK_AVAILABLE_IN_ALL
|
||
GtkConstraintTarget * gtk_constraint_get_target (GtkConstraint *constraint);
|
||
GDK_AVAILABLE_IN_ALL
|
||
GtkConstraintAttribute gtk_constraint_get_target_attribute (GtkConstraint *constraint);
|
||
GDK_AVAILABLE_IN_ALL
|
||
GtkConstraintTarget * gtk_constraint_get_source (GtkConstraint *constraint);
|
||
GDK_AVAILABLE_IN_ALL
|
||
GtkConstraintAttribute gtk_constraint_get_source_attribute (GtkConstraint *constraint);
|
||
GDK_AVAILABLE_IN_ALL
|
||
GtkConstraintRelation gtk_constraint_get_relation (GtkConstraint *constraint);
|
||
GDK_AVAILABLE_IN_ALL
|
||
double gtk_constraint_get_multiplier (GtkConstraint *constraint);
|
||
GDK_AVAILABLE_IN_ALL
|
||
double gtk_constraint_get_constant (GtkConstraint *constraint);
|
||
GDK_AVAILABLE_IN_ALL
|
||
int gtk_constraint_get_strength (GtkConstraint *constraint);
|
||
|
||
GDK_AVAILABLE_IN_ALL
|
||
gboolean gtk_constraint_is_required (GtkConstraint *constraint);
|
||
GDK_AVAILABLE_IN_ALL
|
||
gboolean gtk_constraint_is_attached (GtkConstraint *constraint);
|
||
GDK_AVAILABLE_IN_ALL
|
||
gboolean gtk_constraint_is_constant (GtkConstraint *constraint);
|
||
|
||
G_END_DECLS
|