diff options
Diffstat (limited to 'src/emacsgtkfixed.c')
-rw-r--r-- | src/emacsgtkfixed.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/emacsgtkfixed.c b/src/emacsgtkfixed.c new file mode 100644 index 00000000000..fe3514bce93 --- /dev/null +++ b/src/emacsgtkfixed.c @@ -0,0 +1,123 @@ +/* A Gtk Widget that inherits GtkFixed, but can be shrinked. + +Copyright (C) 2011 Free Software Foundation, Inc. + +This file is part of GNU Emacs. + +GNU Emacs is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +GNU Emacs 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 General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ + +#include "emacsgtkfixed.h" + + +struct _EmacsFixedPrivate +{ + int minwidth, minheight; +}; + + +static void emacs_fixed_get_preferred_width (GtkWidget *widget, + gint *minimum, + gint *natural); +static void emacs_fixed_get_preferred_height (GtkWidget *widget, + gint *minimum, + gint *natural); +G_DEFINE_TYPE (EmacsFixed, emacs_fixed, GTK_TYPE_FIXED) + +static void +emacs_fixed_class_init (EmacsFixedClass *klass) +{ + GtkWidgetClass *widget_class; + GtkFixedClass *fixed_class; + + widget_class = (GtkWidgetClass*) klass; + fixed_class = (GtkFixedClass*) klass; + + widget_class->get_preferred_width = emacs_fixed_get_preferred_width; + widget_class->get_preferred_height = emacs_fixed_get_preferred_height; + g_type_class_add_private (klass, sizeof (EmacsFixedPrivate)); +} + +static GType +emacs_fixed_child_type (GtkFixed *container) +{ + return GTK_TYPE_WIDGET; +} + +static void +emacs_fixed_init (EmacsFixed *fixed) +{ + fixed->priv = G_TYPE_INSTANCE_GET_PRIVATE (fixed, EMACS_TYPE_FIXED, + EmacsFixedPrivate); + fixed->priv->minwidth = fixed->priv->minheight = 0; +} + +/** + * emacs_fixed_new: + * + * Creates a new #EmacsFixed. + * + * Returns: a new #EmacsFixed. + */ +GtkWidget* +emacs_fixed_new (void) +{ + return g_object_new (EMACS_TYPE_FIXED, NULL); +} + +static GtkWidgetClass * +get_parent_class (EmacsFixed *fixed) +{ + EmacsFixedClass *klass = EMACS_FIXED_GET_CLASS (fixed); + GtkFixedClass *parent_class = g_type_class_peek_parent (klass); + return (GtkWidgetClass*) parent_class; +} + +static void +emacs_fixed_get_preferred_width (GtkWidget *widget, + gint *minimum, + gint *natural) +{ + EmacsFixed *fixed = EMACS_FIXED (widget); + EmacsFixedPrivate *priv = fixed->priv; + GtkWidgetClass *widget_class = get_parent_class (fixed); + widget_class->get_preferred_width (widget, minimum, natural); + if (minimum) *minimum = priv->minwidth; +} + +static void +emacs_fixed_get_preferred_height (GtkWidget *widget, + gint *minimum, + gint *natural) +{ + EmacsFixed *fixed = EMACS_FIXED (widget); + EmacsFixedPrivate *priv = fixed->priv; + GtkWidgetClass *widget_class = get_parent_class (fixed); + widget_class->get_preferred_height (widget, minimum, natural); + if (minimum) *minimum = priv->minheight; +} + +void +emacs_fixed_set_min_size (EmacsFixed *widget, int width, int height) +{ + EmacsFixedPrivate *priv = widget->priv; + GtkWidgetClass *widget_class = get_parent_class (widget); + int mw, nw, mh, nh; + + widget_class->get_preferred_height (GTK_WIDGET (widget), &mh, &nh); + widget_class->get_preferred_width (GTK_WIDGET (widget), &mw, &nw); + + /* Gtk complains if min size is less than natural size. */ + if (width <= nw) priv->minwidth = width; + if (height <= nh) priv->minheight = height; +} |