forked from AuroraMiddleware/gtk
ebaa96c0fa
Since it's a type with sub-classes, we need to use GTypeInstance (at the very least), otherwise we won't be able to address each sub-class as such. This is similar to how GskRenderNode and GdkEvent are handled, with the added difficulty that GtkExpression is meant to be used in properties, in order to be deserialised by GtkBuilder. This requires adding a GParamSpec sub-class that we can match on from within GtkBuilder, alongside some convenience API for storing a GtkExpression inside a GValue.
179 lines
8.9 KiB
C
179 lines
8.9 KiB
C
/*
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* Copyright © 2019 Benjamin Otte
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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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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#ifndef __GTK_EXPRESSION_H__
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#define __GTK_EXPRESSION_H__
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#include <gtk/gtktypes.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_EXPRESSION (gtk_expression_get_type ())
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#define GTK_IS_EXPRESSION(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_EXPRESSION))
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#define GTK_EXPRESSION(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_EXPRESSION, GtkExpression))
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typedef struct _GtkExpression GtkExpression;
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typedef struct _GtkExpressionWatch GtkExpressionWatch;
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/**
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* GtkExpressionNotify:
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* @user_data: data passed to gtk_expression_watch()
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*
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* Callback called by gtk_expression_watch() when the
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* expression value changes.
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*/
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typedef void (* GtkExpressionNotify) (gpointer user_data);
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GDK_AVAILABLE_IN_ALL
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GType gtk_expression_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_expression_ref (GtkExpression *self);
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GDK_AVAILABLE_IN_ALL
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void gtk_expression_unref (GtkExpression *self);
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GDK_AVAILABLE_IN_ALL
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GType gtk_expression_get_value_type (GtkExpression *self);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_expression_is_static (GtkExpression *self);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_expression_evaluate (GtkExpression *self,
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gpointer this_,
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GValue *value);
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GDK_AVAILABLE_IN_ALL
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GtkExpressionWatch * gtk_expression_watch (GtkExpression *self,
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gpointer this_,
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GtkExpressionNotify notify,
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gpointer user_data,
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GDestroyNotify user_destroy);
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GDK_AVAILABLE_IN_ALL
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GtkExpressionWatch * gtk_expression_bind (GtkExpression *self,
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gpointer target,
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const char * property,
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gpointer this_);
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GDK_AVAILABLE_IN_ALL
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GtkExpressionWatch * gtk_expression_watch_ref (GtkExpressionWatch *watch);
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GDK_AVAILABLE_IN_ALL
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void gtk_expression_watch_unref (GtkExpressionWatch *watch);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_expression_watch_evaluate (GtkExpressionWatch *watch,
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GValue *value);
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GDK_AVAILABLE_IN_ALL
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void gtk_expression_watch_unwatch (GtkExpressionWatch *watch);
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#define GTK_TYPE_PROPERTY_EXPRESSION (gtk_property_expression_get_type())
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typedef struct _GtkPropertyExpression GtkPropertyExpression;
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GDK_AVAILABLE_IN_ALL
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GType gtk_property_expression_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_property_expression_new (GType this_type,
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GtkExpression *expression,
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const char *property_name);
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_property_expression_new_for_pspec (GtkExpression *expression,
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GParamSpec *pspec);
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#define GTK_TYPE_CONSTANT_EXPRESSION (gtk_constant_expression_get_type())
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typedef struct _GtkConstantExpression GtkConstantExpression;
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GDK_AVAILABLE_IN_ALL
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GType gtk_constant_expression_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_constant_expression_new (GType value_type,
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...);
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_constant_expression_new_for_value (const GValue *value);
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#define GTK_TYPE_OBJECT_EXPRESSION (gtk_object_expression_get_type())
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typedef struct _GtkObjectExpression GtkObjectExpression;
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GDK_AVAILABLE_IN_ALL
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GType gtk_object_expression_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_object_expression_new (GObject *object);
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#define GTK_TYPE_CLOSURE_EXPRESSION (gtk_closure_expression_get_type())
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typedef struct _GtkClosureExpression GtkClosureExpression;
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GDK_AVAILABLE_IN_ALL
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GType gtk_closure_expression_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_closure_expression_new (GType value_type,
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GClosure *closure,
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guint n_params,
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GtkExpression **params);
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#define GTK_TYPE_CCLOSURE_EXPRESSION (gtk_cclosure_expression_get_type())
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typedef struct _GtkCClosureExpression GtkCClosureExpression;
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GDK_AVAILABLE_IN_ALL
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GType gtk_cclosure_expression_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_cclosure_expression_new (GType value_type,
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GClosureMarshal marshal,
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guint n_params,
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GtkExpression **params,
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GCallback callback_func,
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gpointer user_data,
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GClosureNotify user_destroy);
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/* GObject integration, so we can use GtkBuilder */
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#define GTK_VALUE_HOLDS_EXPRESSION(value) (G_VALUE_HOLDS ((value), GTK_TYPE_EXPRESSION))
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GDK_AVAILABLE_IN_ALL
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void gtk_value_set_expression (GValue *value,
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GtkExpression *expression);
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GDK_AVAILABLE_IN_ALL
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void gtk_value_take_expression (GValue *value,
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GtkExpression *expression);
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_value_get_expression (const GValue *value);
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GDK_AVAILABLE_IN_ALL
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GtkExpression * gtk_value_dup_expression (const GValue *value);
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#define GTK_TYPE_PARAM_SPEC_EXPRESSION (gtk_param_expression_get_type())
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#define GTK_PARAM_SPEC_EXPRESSION(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_PARAM_SPEC_EXPRESSION, GtkParamSpecExpression))
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#define GTK_IS_PARAM_SPEC_EXPRESSION(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_PARAM_SPEC_EXPRESSION))
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typedef struct {
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/*< private >*/
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GParamSpec parent_instance;
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} GtkParamSpecExpression;
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GDK_AVAILABLE_IN_ALL
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GType gtk_param_expression_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_ALL
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GParamSpec * gtk_param_spec_expression (const char *name,
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const char *nick,
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const char *blurb,
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GParamFlags flags);
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G_END_DECLS
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#endif /* __GTK_EXPRESSION_H__ */
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