qulogic/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
"gntinternal.h"
#include
"gntmenu.h"
#include
"gntmenuitemcheck.h"
#include
<ctype.h>
#include
<string.h>
enum
{
SIGS
=
1
,
};
enum
{
ITEM_TEXT
=
0
,
ITEM_TRIGGER
,
ITEM_SUBMENU
,
NUM_COLUMNS
};
static
GntTreeClass
*
parent_class
=
NULL
;
static
void
(
*
org_draw
)(
GntWidget
*
wid
);
static
void
(
*
org_destroy
)(
GntWidget
*
wid
);
static
void
(
*
org_map
)(
GntWidget
*
wid
);
static
void
(
*
org_size_request
)(
GntWidget
*
wid
);
static
gboolean
(
*
org_key_pressed
)(
GntWidget
*
w
,
const
char
*
t
);
static
gboolean
(
*
org_clicked
)(
GntWidget
*
w
,
GntMouseEvent
event
,
int
x
,
int
y
);
static
void
menuitem_activate
(
GntMenu
*
menu
,
GntMenuItem
*
item
);
static
void
menu_hide_all
(
GntMenu
*
menu
)
{
while
(
menu
->
parentmenu
)
menu
=
menu
->
parentmenu
;
gnt_widget_hide
(
GNT_WIDGET
(
menu
));
}
static
void
show_submenu
(
GntMenu
*
menu
)
{
GntMenuItem
*
item
;
if
(
menu
->
type
!=
GNT_MENU_TOPLEVEL
)
return
;
item
=
g_list_nth_data
(
menu
->
list
,
menu
->
selected
);
if
(
!
item
||
!
item
->
submenu
)
return
;
menuitem_activate
(
menu
,
item
);
}
static
void
gnt_menu_draw
(
GntWidget
*
widget
)
{
GntMenu
*
menu
=
GNT_MENU
(
widget
);
GList
*
iter
;
chtype
type
;
int
i
;
if
(
menu
->
type
==
GNT_MENU_TOPLEVEL
)
{
wbkgdset
(
widget
->
window
,
'\0'
|
gnt_color_pair
(
GNT_COLOR_HIGHLIGHT
));
werase
(
widget
->
window
);
for
(
i
=
0
,
iter
=
menu
->
list
;
iter
;
iter
=
iter
->
next
,
i
++
)
{
GntMenuItem
*
item
=
GNT_MENU_ITEM
(
iter
->
data
);
type
=
' '
|
gnt_color_pair
(
GNT_COLOR_HIGHLIGHT
);
if
(
i
==
menu
->
selected
)
type
|=
A_REVERSE
;
item
->
priv
.
x
=
getcurx
(
widget
->
window
)
+
widget
->
priv
.
x
;
item
->
priv
.
y
=
getcury
(
widget
->
window
)
+
widget
->
priv
.
y
+
1
;
wbkgdset
(
widget
->
window
,
type
);
wprintw
(
widget
->
window
,
" %s "
,
C_
(
item
->
text
));
}
}
else
{
org_draw
(
widget
);
}
GNTDEBUG
;
}
static
void
gnt_menu_size_request
(
GntWidget
*
widget
)
{
GntMenu
*
menu
=
GNT_MENU
(
widget
);
if
(
menu
->
type
==
GNT_MENU_TOPLEVEL
)
{
widget
->
priv
.
height
=
1
;
widget
->
priv
.
width
=
getmaxx
(
stdscr
);
}
else
{
org_size_request
(
widget
);
widget
->
priv
.
height
=
g_list_length
(
menu
->
list
)
+
2
;
}
}
static
void
menu_tree_add
(
GntMenu
*
menu
,
GntMenuItem
*
item
,
GntMenuItem
*
parent
)
{
char
trigger
[
4
]
=
"
\0
)
\0
"
;
if
((
trigger
[
1
]
=
gnt_menuitem_get_trigger
(
item
))
&&
trigger
[
1
]
!=
' '
)
trigger
[
0
]
=
'('
;
if
(
GNT_IS_MENU_ITEM_CHECK
(
item
))
{
gnt_tree_add_choice
(
GNT_TREE
(
menu
),
item
,
gnt_tree_create_row
(
GNT_TREE
(
menu
),
item
->
text
,
trigger
,
" "
),
parent
,
NULL
);
gnt_tree_set_choice
(
GNT_TREE
(
menu
),
item
,
gnt_menuitem_check_get_checked
(
GNT_MENU_ITEM_CHECK
(
item
)));
}
else
gnt_tree_add_row_last
(
GNT_TREE
(
menu
),
item
,
gnt_tree_create_row
(
GNT_TREE
(
menu
),
item
->
text
,
trigger
,
item
->
submenu
?
">"
:
" "
),
parent
);
if
(
0
&&
item
->
submenu
)
{
GntMenu
*
sub
=
GNT_MENU
(
item
->
submenu
);
GList
*
iter
;
for
(
iter
=
sub
->
list
;
iter
;
iter
=
iter
->
next
)
{
GntMenuItem
*
it
=
GNT_MENU_ITEM
(
iter
->
data
);
menu_tree_add
(
menu
,
it
,
item
);
}
}
}
#define GET_VAL(ch) ((ch >= '0' && ch <= '9') ? (ch - '0') : (ch >= 'a' && ch <= 'z') ? (10 + ch - 'a') : 36)
static
void
assign_triggers
(
GntMenu
*
menu
)
{
GList
*
iter
;
gboolean
bools
[
37
];
memset
(
bools
,
0
,
sizeof
(
bools
));
bools
[
36
]
=
1
;
for
(
iter
=
menu
->
list
;
iter
;
iter
=
iter
->
next
)
{
GntMenuItem
*
item
=
iter
->
data
;
char
trigger
=
tolower
(
gnt_menuitem_get_trigger
(
item
));
if
(
trigger
==
'\0'
||
trigger
==
' '
)
continue
;
bools
[(
int
)
GET_VAL
(
trigger
)]
=
1
;
}
for
(
iter
=
menu
->
list
;
iter
;
iter
=
iter
->
next
)
{
GntMenuItem
*
item
=
iter
->
data
;
char
trigger
=
gnt_menuitem_get_trigger
(
item
);
const
char
*
text
=
item
->
text
;
if
(
trigger
!=
'\0'
)
continue
;
while
(
*
text
)
{
char
ch
=
tolower
(
*
text
++
);
char
t
[
2
]
=
{
ch
,
'\0'
};
if
(
ch
==
' '
||
bools
[(
int
)
GET_VAL
(
ch
)]
||
gnt_bindable_check_key
(
GNT_BINDABLE
(
menu
),
t
))
continue
;
trigger
=
ch
;
break
;
}
if
(
trigger
==
0
)
trigger
=
item
->
text
[
0
];
gnt_menuitem_set_trigger
(
item
,
trigger
);
bools
[(
int
)
GET_VAL
(
trigger
)]
=
1
;
}
}
static
void
gnt_menu_map
(
GntWidget
*
widget
)
{
GntMenu
*
menu
=
GNT_MENU
(
widget
);
if
(
menu
->
type
==
GNT_MENU_TOPLEVEL
)
{
gnt_widget_size_request
(
widget
);
}
else
{
/* Populate the tree */
GList
*
iter
;
gnt_tree_remove_all
(
GNT_TREE
(
widget
));
/* Try to assign some trigger for the items */
assign_triggers
(
menu
);
for
(
iter
=
menu
->
list
;
iter
;
iter
=
iter
->
next
)
{
GntMenuItem
*
item
=
GNT_MENU_ITEM
(
iter
->
data
);
menu_tree_add
(
menu
,
item
,
NULL
);
}
org_map
(
widget
);
gnt_tree_adjust_columns
(
GNT_TREE
(
widget
));
}
GNTDEBUG
;
}
static
void
menuitem_activate
(
GntMenu
*
menu
,
GntMenuItem
*
item
)
{
if
(
!
item
)
return
;
if
(
gnt_menuitem_activate
(
item
))
{
menu_hide_all
(
menu
);
}
else
{
if
(
item
->
submenu
)
{
GntMenu
*
sub
=
GNT_MENU
(
item
->
submenu
);
menu
->
submenu
=
sub
;
sub
->
type
=
GNT_MENU_POPUP
;
/* Submenus are *never* toplevel */
sub
->
parentmenu
=
menu
;
if
(
menu
->
type
!=
GNT_MENU_TOPLEVEL
)
{
GntWidget
*
widget
=
GNT_WIDGET
(
menu
);
item
->
priv
.
x
=
widget
->
priv
.
x
+
widget
->
priv
.
width
-
1
;
item
->
priv
.
y
=
widget
->
priv
.
y
+
gnt_tree_get_selection_visible_line
(
GNT_TREE
(
menu
));
}
gnt_widget_set_position
(
GNT_WIDGET
(
sub
),
item
->
priv
.
x
,
item
->
priv
.
y
);
GNT_WIDGET_UNSET_FLAGS
(
GNT_WIDGET
(
sub
),
GNT_WIDGET_INVISIBLE
);
gnt_widget_draw
(
GNT_WIDGET
(
sub
));
}
else
{
menu_hide_all
(
menu
);
}
}
}
static
GList
*
find_item_with_trigger
(
GList
*
start
,
GList
*
end
,
char
trigger
)
{
GList
*
iter
;
for
(
iter
=
start
;
iter
!=
(
end
?
end
:
NULL
);
iter
=
iter
->
next
)
{
if
(
gnt_menuitem_get_trigger
(
iter
->
data
)
==
trigger
)
return
iter
;
}
return
NULL
;
}
static
gboolean
check_for_trigger
(
GntMenu
*
menu
,
char
trigger
)
{
/* check for a trigger key */
GList
*
iter
;
GList
*
find
;
GList
*
nth
=
g_list_find
(
menu
->
list
,
gnt_tree_get_selection_data
(
GNT_TREE
(
menu
)));
if
(
nth
==
NULL
)
return
FALSE
;
find
=
find_item_with_trigger
(
nth
->
next
,
NULL
,
trigger
);
if
(
!
find
)
find
=
find_item_with_trigger
(
menu
->
list
,
nth
->
next
,
trigger
);
if
(
!
find
)
return
FALSE
;
if
(
find
!=
nth
)
{
gnt_tree_set_selected
(
GNT_TREE
(
menu
),
find
->
data
);
iter
=
find_item_with_trigger
(
find
->
next
,
NULL
,
trigger
);
if
(
iter
!=
NULL
&&
iter
!=
find
)
return
TRUE
;
iter
=
find_item_with_trigger
(
menu
->
list
,
nth
,
trigger
);
if
(
iter
!=
NULL
&&
iter
!=
find
)
return
TRUE
;
}
gnt_widget_activate
(
GNT_WIDGET
(
menu
));
return
TRUE
;
}
static
gboolean
gnt_menu_key_pressed
(
GntWidget
*
widget
,
const
char
*
text
)
{
GntMenu
*
menu
=
GNT_MENU
(
widget
);
int
current
=
menu
->
selected
;
if
(
menu
->
submenu
)
{
GntMenu
*
sub
=
menu
;
do
sub
=
sub
->
submenu
;
while
(
sub
->
submenu
);
if
(
gnt_widget_key_pressed
(
GNT_WIDGET
(
sub
),
text
))
return
TRUE
;
if
(
menu
->
type
!=
GNT_MENU_TOPLEVEL
)
return
FALSE
;
}
if
((
text
[
0
]
==
27
&&
text
[
1
]
==
0
)
||
(
menu
->
type
!=
GNT_MENU_TOPLEVEL
&&
strcmp
(
text
,
GNT_KEY_LEFT
)
==
0
))
{
/* Escape closes menu */
GntMenu
*
par
=
menu
->
parentmenu
;
if
(
par
!=
NULL
)
{
par
->
submenu
=
NULL
;
gnt_widget_hide
(
widget
);
}
else
gnt_widget_hide
(
widget
);
if
(
par
&&
par
->
type
==
GNT_MENU_TOPLEVEL
)
gnt_menu_key_pressed
(
GNT_WIDGET
(
par
),
text
);
return
TRUE
;
}
if
(
menu
->
type
==
GNT_MENU_TOPLEVEL
)
{
if
(
strcmp
(
text
,
GNT_KEY_LEFT
)
==
0
)
{
menu
->
selected
--
;
if
(
menu
->
selected
<
0
)
menu
->
selected
=
g_list_length
(
menu
->
list
)
-
1
;
}
else
if
(
strcmp
(
text
,
GNT_KEY_RIGHT
)
==
0
)
{
menu
->
selected
++
;
if
(
menu
->
selected
>=
g_list_length
(
menu
->
list
))
menu
->
selected
=
0
;
}
else
if
(
strcmp
(
text
,
GNT_KEY_ENTER
)
==
0
||
strcmp
(
text
,
GNT_KEY_DOWN
)
==
0
)
{
gnt_widget_activate
(
widget
);
}
if
(
current
!=
menu
->
selected
)
{
GntMenu
*
sub
=
menu
->
submenu
;
if
(
sub
)
gnt_widget_hide
(
GNT_WIDGET
(
sub
));
show_submenu
(
menu
);
gnt_widget_draw
(
widget
);
return
TRUE
;
}
}
else
{
if
(
text
[
1
]
==
'\0'
)
{
if
(
check_for_trigger
(
menu
,
text
[
0
]))
return
TRUE
;
}
else
if
(
strcmp
(
text
,
GNT_KEY_RIGHT
)
==
0
)
{
GntMenuItem
*
item
=
gnt_tree_get_selection_data
(
GNT_TREE
(
menu
));
if
(
item
&&
item
->
submenu
)
{
menuitem_activate
(
menu
,
item
);
return
TRUE
;
}
}
if
(
gnt_bindable_perform_action_key
(
GNT_BINDABLE
(
widget
),
text
))
return
TRUE
;
return
org_key_pressed
(
widget
,
text
);
}
return
gnt_bindable_perform_action_key
(
GNT_BINDABLE
(
widget
),
text
);
}
static
void
gnt_menu_destroy
(
GntWidget
*
widget
)
{
GntMenu
*
menu
=
GNT_MENU
(
widget
);
g_list_foreach
(
menu
->
list
,
(
GFunc
)
g_object_unref
,
NULL
);
g_list_free
(
menu
->
list
);
org_destroy
(
widget
);
}
static
void
gnt_menu_toggled
(
GntTree
*
tree
,
gpointer
key
)
{
GntMenuItem
*
item
=
GNT_MENU_ITEM
(
key
);
GntMenu
*
menu
=
GNT_MENU
(
tree
);
gboolean
check
=
gnt_menuitem_check_get_checked
(
GNT_MENU_ITEM_CHECK
(
item
));
gnt_menuitem_check_set_checked
(
GNT_MENU_ITEM_CHECK
(
item
),
!
check
);
gnt_menuitem_activate
(
item
);
while
(
menu
)
{
gnt_widget_hide
(
GNT_WIDGET
(
menu
));
menu
=
menu
->
parentmenu
;
}
}
static
void
gnt_menu_activate
(
GntWidget
*
widget
)
{
GntMenu
*
menu
=
GNT_MENU
(
widget
);
GntMenuItem
*
item
;
if
(
menu
->
type
==
GNT_MENU_TOPLEVEL
)
{
item
=
g_list_nth_data
(
menu
->
list
,
menu
->
selected
);
}
else
{
item
=
gnt_tree_get_selection_data
(
GNT_TREE
(
menu
));
}
if
(
item
)
{
if
(
GNT_IS_MENU_ITEM_CHECK
(
item
))
gnt_menu_toggled
(
GNT_TREE
(
widget
),
item
);
else
menuitem_activate
(
menu
,
item
);
}
}
static
void
gnt_menu_hide
(
GntWidget
*
widget
)
{
GntMenu
*
sub
,
*
menu
=
GNT_MENU
(
widget
);
while
((
sub
=
menu
->
submenu
))
gnt_widget_hide
(
GNT_WIDGET
(
sub
));
if
(
menu
->
parentmenu
)
menu
->
parentmenu
->
submenu
=
NULL
;
}
static
gboolean
gnt_menu_clicked
(
GntWidget
*
widget
,
GntMouseEvent
event
,
int
x
,
int
y
)
{
if
(
GNT_MENU
(
widget
)
->
type
!=
GNT_MENU_POPUP
)
return
FALSE
;
if
(
org_clicked
&&
org_clicked
(
widget
,
event
,
x
,
y
))
return
TRUE
;
gnt_widget_activate
(
widget
);
return
TRUE
;
}
static
void
gnt_menu_class_init
(
GntMenuClass
*
klass
)
{
GntWidgetClass
*
wid_class
=
GNT_WIDGET_CLASS
(
klass
);
parent_class
=
GNT_TREE_CLASS
(
klass
);
org_destroy
=
wid_class
->
destroy
;
org_map
=
wid_class
->
map
;
org_draw
=
wid_class
->
draw
;
org_key_pressed
=
wid_class
->
key_pressed
;
org_size_request
=
wid_class
->
size_request
;
org_clicked
=
wid_class
->
clicked
;
wid_class
->
destroy
=
gnt_menu_destroy
;
wid_class
->
draw
=
gnt_menu_draw
;
wid_class
->
map
=
gnt_menu_map
;
wid_class
->
size_request
=
gnt_menu_size_request
;
wid_class
->
key_pressed
=
gnt_menu_key_pressed
;
wid_class
->
activate
=
gnt_menu_activate
;
wid_class
->
hide
=
gnt_menu_hide
;
wid_class
->
clicked
=
gnt_menu_clicked
;
parent_class
->
toggled
=
gnt_menu_toggled
;
GNTDEBUG
;
}
static
void
gnt_menu_init
(
GTypeInstance
*
instance
,
gpointer
class
)
{
GntWidget
*
widget
=
GNT_WIDGET
(
instance
);
GNT_WIDGET_SET_FLAGS
(
widget
,
GNT_WIDGET_NO_SHADOW
|
GNT_WIDGET_NO_BORDER
|
GNT_WIDGET_CAN_TAKE_FOCUS
|
GNT_WIDGET_TRANSIENT
|
GNT_WIDGET_DISABLE_ACTIONS
);
GNTDEBUG
;
}
/******************************************************************************
* GntMenu API
*****************************************************************************/
GType
gnt_menu_get_gtype
(
void
)
{
static
GType
type
=
0
;
if
(
type
==
0
)
{
static
const
GTypeInfo
info
=
{
sizeof
(
GntMenuClass
),
NULL
,
/* base_init */
NULL
,
/* base_finalize */
(
GClassInitFunc
)
gnt_menu_class_init
,
NULL
,
/* class_finalize */
NULL
,
/* class_data */
sizeof
(
GntMenu
),
0
,
/* n_preallocs */
gnt_menu_init
,
/* instance_init */
NULL
/* value_table */
};
type
=
g_type_register_static
(
GNT_TYPE_TREE
,
"GntMenu"
,
&
info
,
0
);
}
return
type
;
}
GntWidget
*
gnt_menu_new
(
GntMenuType
type
)
{
GntWidget
*
widget
=
g_object_new
(
GNT_TYPE_MENU
,
NULL
);
GntMenu
*
menu
=
GNT_MENU
(
widget
);
menu
->
list
=
NULL
;
menu
->
selected
=
0
;
menu
->
type
=
type
;
if
(
type
==
GNT_MENU_TOPLEVEL
)
{
widget
->
priv
.
x
=
0
;
widget
->
priv
.
y
=
0
;
}
else
{
GNT_TREE
(
widget
)
->
show_separator
=
FALSE
;
g_object_set
(
G_OBJECT
(
widget
),
"columns"
,
NUM_COLUMNS
,
NULL
);
gnt_tree_set_col_width
(
GNT_TREE
(
widget
),
ITEM_TRIGGER
,
3
);
gnt_tree_set_column_resizable
(
GNT_TREE
(
widget
),
ITEM_TRIGGER
,
FALSE
);
gnt_tree_set_col_width
(
GNT_TREE
(
widget
),
ITEM_SUBMENU
,
1
);
gnt_tree_set_column_resizable
(
GNT_TREE
(
widget
),
ITEM_SUBMENU
,
FALSE
);
GNT_WIDGET_UNSET_FLAGS
(
widget
,
GNT_WIDGET_NO_BORDER
);
}
return
widget
;
}
void
gnt_menu_add_item
(
GntMenu
*
menu
,
GntMenuItem
*
item
)
{
menu
->
list
=
g_list_append
(
menu
->
list
,
item
);
}
GntMenuItem
*
gnt_menu_get_item
(
GntMenu
*
menu
,
const
char
*
id
)
{
GntMenuItem
*
item
=
NULL
;
GList
*
iter
=
menu
->
list
;
if
(
!
id
||
!*
id
)
return
NULL
;
for
(;
iter
;
iter
=
iter
->
next
)
{
GntMenu
*
sub
;
item
=
iter
->
data
;
sub
=
gnt_menuitem_get_submenu
(
item
);
if
(
sub
)
{
item
=
gnt_menu_get_item
(
sub
,
id
);
if
(
item
)
break
;
}
else
{
const
char
*
itid
=
gnt_menuitem_get_id
(
item
);
if
(
itid
&&
strcmp
(
itid
,
id
)
==
0
)
break
;
/* XXX: Perhaps look at the menu-label as well? */
}
item
=
NULL
;
}
return
item
;
}