2019-04-09 14:33:52 +00:00
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/* gtkconstraint.h: Constraint between two widgets
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* Copyright 2019 GNOME Foundation
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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 2.1 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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* Author: Emmanuele Bassi
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*/
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#pragma once
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#include <gtk/gtktypes.h>
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#include <gtk/gtkenums.h>
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G_BEGIN_DECLS
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2019-06-25 19:04:05 +00:00
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typedef struct _GtkConstraintTarget GtkConstraintTarget;
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#define GTK_TYPE_CONSTRAINT_TARGET (gtk_constraint_target_get_type ())
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/**
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* GtkConstraintTarget:
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*
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* The GtkConstraintTarget interface is implemented by objects that
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* can be used as source or target in #GtkConstraints. Besides
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* #GtkWidget, it is also implemented by #GtkConstraintGuide.
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*/
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GDK_AVAILABLE_IN_ALL
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G_DECLARE_INTERFACE (GtkConstraintTarget, gtk_constraint_target, GTK, CONSTRAINT_TARGET, GObject)
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2019-04-09 14:33:52 +00:00
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#define GTK_TYPE_CONSTRAINT (gtk_constraint_get_type ())
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/**
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* GtkConstraint:
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*
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* An object describing the relation between two widget attributes.
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*
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* All relations are in the form:
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*
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* |[<!-- language=plain -->
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* target.attr_name = source.attr_name × multiplier + constant
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* ]|
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*
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* A #GtkConstraint is immutable once it's created.
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*/
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GDK_AVAILABLE_IN_ALL
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G_DECLARE_FINAL_TYPE (GtkConstraint, gtk_constraint, GTK, CONSTRAINT, GObject)
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GDK_AVAILABLE_IN_ALL
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2019-06-27 17:26:19 +00:00
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GtkConstraint * gtk_constraint_new (gpointer target,
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2019-04-09 14:33:52 +00:00
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GtkConstraintAttribute target_attribute,
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GtkConstraintRelation relation,
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2019-06-27 17:26:19 +00:00
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gpointer source,
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2019-04-09 14:33:52 +00:00
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GtkConstraintAttribute source_attribute,
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double multiplier,
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double constant,
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int strength);
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GDK_AVAILABLE_IN_ALL
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2019-06-27 17:26:19 +00:00
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GtkConstraint * gtk_constraint_new_constant (gpointer target,
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2019-04-09 14:33:52 +00:00
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GtkConstraintAttribute target_attribute,
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GtkConstraintRelation relation,
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double constant,
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int strength);
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GDK_AVAILABLE_IN_ALL
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2019-06-25 19:16:02 +00:00
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GtkConstraintTarget * gtk_constraint_get_target (GtkConstraint *constraint);
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GDK_AVAILABLE_IN_ALL
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2019-04-09 14:33:52 +00:00
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GtkConstraintAttribute gtk_constraint_get_target_attribute (GtkConstraint *constraint);
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GDK_AVAILABLE_IN_ALL
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2019-06-25 19:16:02 +00:00
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GtkConstraintTarget * gtk_constraint_get_source (GtkConstraint *constraint);
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2019-04-09 14:33:52 +00:00
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GDK_AVAILABLE_IN_ALL
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GtkConstraintAttribute gtk_constraint_get_source_attribute (GtkConstraint *constraint);
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GDK_AVAILABLE_IN_ALL
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GtkConstraintRelation gtk_constraint_get_relation (GtkConstraint *constraint);
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GDK_AVAILABLE_IN_ALL
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double gtk_constraint_get_multiplier (GtkConstraint *constraint);
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GDK_AVAILABLE_IN_ALL
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double gtk_constraint_get_constant (GtkConstraint *constraint);
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GDK_AVAILABLE_IN_ALL
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int gtk_constraint_get_strength (GtkConstraint *constraint);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_constraint_is_required (GtkConstraint *constraint);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_constraint_is_attached (GtkConstraint *constraint);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_constraint_is_constant (GtkConstraint *constraint);
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G_END_DECLS
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