libgnt/libgnt
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Make the combobox a tiny bit friendlier.
v2.7.3
2010-07-05, Sadrul Habib Chowdhury
ac8d8a62c098
Make the combobox a tiny bit friendlier.
Pressing the first letter of an item will now jump to that item (and
popup the dropdown first if necessary). Add some API in libgnt in the
process.
/**
* GNT - The GLib Ncurses Toolkit
*
* GNT is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This library 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include
<stdlib.h>
#include
<string.h>
#include
"gntinternal.h"
#include
"gntbutton.h"
#include
"gntstyle.h"
#include
"gntutils.h"
enum
{
SIGS
=
1
,
};
static
GntWidgetClass
*
parent_class
=
NULL
;
static
gboolean
small_button
=
FALSE
;
static
void
gnt_button_draw
(
GntWidget
*
widget
)
{
GntButton
*
button
=
GNT_BUTTON
(
widget
);
GntColorType
type
;
gboolean
focus
;
if
((
focus
=
gnt_widget_has_focus
(
widget
)))
type
=
GNT_COLOR_HIGHLIGHT
;
else
type
=
GNT_COLOR_NORMAL
;
wbkgdset
(
widget
->
window
,
'\0'
|
gnt_color_pair
(
type
));
mvwaddstr
(
widget
->
window
,
(
small_button
)
?
0
:
1
,
2
,
C_
(
button
->
priv
->
text
));
if
(
small_button
)
{
type
=
GNT_COLOR_HIGHLIGHT
;
mvwchgat
(
widget
->
window
,
0
,
0
,
widget
->
priv
.
width
,
focus
?
A_BOLD
:
A_REVERSE
,
type
,
NULL
);
}
GNTDEBUG
;
}
static
void
gnt_button_size_request
(
GntWidget
*
widget
)
{
GntButton
*
button
=
GNT_BUTTON
(
widget
);
gnt_util_get_text_bound
(
button
->
priv
->
text
,
&
widget
->
priv
.
width
,
&
widget
->
priv
.
height
);
widget
->
priv
.
width
+=
4
;
if
(
!
GNT_WIDGET_IS_FLAG_SET
(
widget
,
GNT_WIDGET_NO_BORDER
))
widget
->
priv
.
height
+=
2
;
}
static
void
gnt_button_map
(
GntWidget
*
widget
)
{
if
(
widget
->
priv
.
width
==
0
||
widget
->
priv
.
height
==
0
)
gnt_widget_size_request
(
widget
);
GNTDEBUG
;
}
static
gboolean
gnt_button_clicked
(
GntWidget
*
widget
,
GntMouseEvent
event
,
int
x
,
int
y
)
{
if
(
event
==
GNT_LEFT_MOUSE_DOWN
)
{
gnt_widget_activate
(
widget
);
return
TRUE
;
}
return
FALSE
;
}
static
void
gnt_button_destroy
(
GntWidget
*
widget
)
{
GntButton
*
button
=
GNT_BUTTON
(
widget
);
g_free
(
button
->
priv
->
text
);
g_free
(
button
->
priv
);
}
static
gboolean
button_activate
(
GntBindable
*
bind
,
GList
*
null
)
{
gnt_widget_activate
(
GNT_WIDGET
(
bind
));
return
TRUE
;
}
static
void
gnt_button_class_init
(
GntWidgetClass
*
klass
)
{
char
*
style
;
GntBindableClass
*
bindable
=
GNT_BINDABLE_CLASS
(
klass
);
parent_class
=
GNT_WIDGET_CLASS
(
klass
);
parent_class
->
draw
=
gnt_button_draw
;
parent_class
->
map
=
gnt_button_map
;
parent_class
->
size_request
=
gnt_button_size_request
;
parent_class
->
clicked
=
gnt_button_clicked
;
parent_class
->
destroy
=
gnt_button_destroy
;
style
=
gnt_style_get_from_name
(
NULL
,
"small-button"
);
small_button
=
gnt_style_parse_bool
(
style
);
g_free
(
style
);
gnt_bindable_class_register_action
(
bindable
,
"activate"
,
button_activate
,
GNT_KEY_ENTER
,
NULL
);
gnt_style_read_actions
(
G_OBJECT_CLASS_TYPE
(
klass
),
GNT_BINDABLE_CLASS
(
klass
));
}
static
void
gnt_button_init
(
GTypeInstance
*
instance
,
gpointer
class
)
{
GntWidget
*
widget
=
GNT_WIDGET
(
instance
);
GntButton
*
button
=
GNT_BUTTON
(
instance
);
button
->
priv
=
g_new0
(
GntButtonPriv
,
1
);
widget
->
priv
.
minw
=
4
;
widget
->
priv
.
minh
=
small_button
?
1
:
3
;
if
(
small_button
)
GNT_WIDGET_SET_FLAGS
(
widget
,
GNT_WIDGET_NO_BORDER
|
GNT_WIDGET_NO_SHADOW
);
GNT_WIDGET_UNSET_FLAGS
(
widget
,
GNT_WIDGET_GROW_X
|
GNT_WIDGET_GROW_Y
);
GNTDEBUG
;
}
/******************************************************************************
* GntButton API
*****************************************************************************/
GType
gnt_button_get_gtype
(
void
)
{
static
GType
type
=
0
;
if
(
type
==
0
)
{
static
const
GTypeInfo
info
=
{
sizeof
(
GntButtonClass
),
NULL
,
/* base_init */
NULL
,
/* base_finalize */
(
GClassInitFunc
)
gnt_button_class_init
,
NULL
,
/* class_finalize */
NULL
,
/* class_data */
sizeof
(
GntButton
),
0
,
/* n_preallocs */
gnt_button_init
,
/* instance_init */
NULL
/* value_table */
};
type
=
g_type_register_static
(
GNT_TYPE_WIDGET
,
"GntButton"
,
&
info
,
0
);
}
return
type
;
}
GntWidget
*
gnt_button_new
(
const
char
*
text
)
{
GntWidget
*
widget
=
g_object_new
(
GNT_TYPE_BUTTON
,
NULL
);
GntButton
*
button
=
GNT_BUTTON
(
widget
);
button
->
priv
->
text
=
gnt_util_onscreen_fit_string
(
text
,
-1
);
gnt_widget_set_take_focus
(
widget
,
TRUE
);
return
widget
;
}