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4dd1de4129
Instead of playing games with mapping negative symbolic values to
positive ones, let's use the appropriate constants everywhere. This
allows us to use:
GTK_CONSTRAINT_STRENGTH_WEAK * 2
Or
GTK_CONSTRAINT_STRENGTH_STRONG + 1
In code using the public API.
We also store the strength values as integers, so we can compare them
properly, and only turn them into doubles when they are inserted into
the solver, just like every other variable.
118 lines
4.2 KiB
C
118 lines
4.2 KiB
C
/* gtkconstraintsolverprivate.h: Constraint solver based on the Cassowary method
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* Copyright 2019 GNOME Foundation
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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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 "gtkconstrainttypesprivate.h"
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G_BEGIN_DECLS
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#define GTK_TYPE_CONSTRAINT_SOLVER (gtk_constraint_solver_get_type())
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G_DECLARE_FINAL_TYPE (GtkConstraintSolver, gtk_constraint_solver, GTK, CONSTRAINT_SOLVER, GObject)
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GtkConstraintSolver *
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gtk_constraint_solver_new (void);
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void
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gtk_constraint_solver_freeze (GtkConstraintSolver *solver);
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void
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gtk_constraint_solver_thaw (GtkConstraintSolver *solver);
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void
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gtk_constraint_solver_resolve (GtkConstraintSolver *solver);
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GtkConstraintVariable *
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gtk_constraint_solver_create_variable (GtkConstraintSolver *solver,
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const char *prefix,
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const char *name,
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double value);
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GtkConstraintRef *
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gtk_constraint_solver_add_constraint (GtkConstraintSolver *solver,
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GtkConstraintVariable *variable,
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GtkConstraintRelation relation,
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GtkConstraintExpression *expression,
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int strength);
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void
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gtk_constraint_solver_remove_constraint (GtkConstraintSolver *solver,
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GtkConstraintRef *reference);
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GtkConstraintRef *
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gtk_constraint_solver_add_stay_variable (GtkConstraintSolver *solver,
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GtkConstraintVariable *variable,
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int strength);
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void
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gtk_constraint_solver_remove_stay_variable (GtkConstraintSolver *solver,
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GtkConstraintVariable *variable);
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gboolean
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gtk_constraint_solver_has_stay_variable (GtkConstraintSolver *solver,
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GtkConstraintVariable *variable);
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GtkConstraintRef *
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gtk_constraint_solver_add_edit_variable (GtkConstraintSolver *solver,
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GtkConstraintVariable *variable,
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int strength);
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void
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gtk_constraint_solver_remove_edit_variable (GtkConstraintSolver *solver,
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GtkConstraintVariable *variable);
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gboolean
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gtk_constraint_solver_has_edit_variable (GtkConstraintSolver *solver,
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GtkConstraintVariable *variable);
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void
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gtk_constraint_solver_suggest_value (GtkConstraintSolver *solver,
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GtkConstraintVariable *variable,
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double value);
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void
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gtk_constraint_solver_begin_edit (GtkConstraintSolver *solver);
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void
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gtk_constraint_solver_end_edit (GtkConstraintSolver *solver);
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void
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gtk_constraint_solver_note_added_variable (GtkConstraintSolver *self,
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GtkConstraintVariable *variable,
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GtkConstraintVariable *subject);
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void
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gtk_constraint_solver_note_removed_variable (GtkConstraintSolver *self,
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GtkConstraintVariable *variable,
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GtkConstraintVariable *subject);
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void
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gtk_constraint_solver_clear (GtkConstraintSolver *solver);
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char *
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gtk_constraint_solver_to_string (GtkConstraintSolver *solver);
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char *
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gtk_constraint_solver_statistics (GtkConstraintSolver *solver);
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G_END_DECLS
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