libgnt/libgnt
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Simplify processing of tagged window movement.
2019-04-26, Elliott Sales de Andrade
b96ae76fb660
Simplify processing of tagged window movement.
These foreach calls process the list multiple times instead of just
once (though hopefully this is not on purpose for some undocumented
side-effect.)
/*
* 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 02110-1301, USA.
*/
#include
"gntinternal.h"
#include
"gntmenu.h"
#include
"gntmenuitemcheck.h"
#include
"gntmenuitemprivate.h"
#include
<ctype.h>
#include
<string.h>
struct
_GntMenu
{
GntTree
parent
;
GntMenuType
type
;
GList
*
list
;
guint
selected
;
/* This will keep track of its immediate submenu which is visible so
* that keystrokes can be passed to it. */
GntMenu
*
submenu
;
GntMenu
*
parentmenu
;
};
enum
{
SIGS
=
1
,
};
enum
{
ITEM_TEXT
=
0
,
ITEM_TRIGGER
,
ITEM_SUBMENU
,
NUM_COLUMNS
};
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
);
G_DEFINE_TYPE
(
GntMenu
,
gnt_menu
,
GNT_TYPE_TREE
)
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
||
!
gnt_menuitem_get_submenu
(
item
))
{
return
;
}
menuitem_activate
(
menu
,
item
);
}
static
void
gnt_menu_draw
(
GntWidget
*
widget
)
{
GntMenu
*
menu
=
GNT_MENU
(
widget
);
GList
*
iter
;
chtype
type
;
guint
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
);
if
(
!
gnt_menuitem_is_visible
(
item
))
continue
;
type
=
' '
;
if
(
gnt_menuitem_has_callback
(
item
)
||
gnt_menuitem_get_submenu
(
item
))
{
type
|=
gnt_color_pair
(
GNT_COLOR_HIGHLIGHT
);
}
else
{
type
|=
gnt_color_pair
(
GNT_COLOR_DISABLED
);
}
if
(
i
==
menu
->
selected
)
type
|=
A_REVERSE
;
gnt_menuitem_set_position
(
item
,
getcurx
(
widget
->
window
)
+
widget
->
priv
.
x
,
getcury
(
widget
->
window
)
+
widget
->
priv
.
y
+
1
);
wbkgdset
(
widget
->
window
,
type
);
wprintw
(
widget
->
window
,
" %s "
,
C_
(
gnt_menuitem_get_text
(
item
)));
}
}
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
[]
=
"
\0
)
\0
"
;
g_return_if_fail
(
item
!=
NULL
);
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
),
gnt_menuitem_get_text
(
item
),
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
),
gnt_menuitem_get_text
(
item
),
trigger
,
gnt_menuitem_get_submenu
(
item
)
?
">"
:
" "
),
parent
);
if
(
!
gnt_menuitem_has_callback
(
item
)
&&
!
gnt_menuitem_get_submenu
(
item
))
{
gnt_tree_set_row_color
(
GNT_TREE
(
menu
),
item
,
GNT_COLOR_DISABLED
);
}
}
if
(
0
&&
gnt_menuitem_get_submenu
(
item
))
{
GntMenu
*
sub
=
GNT_MENU
(
gnt_menuitem_get_submenu
(
item
));
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
gchar
*
text
=
gnt_menuitem_get_text
(
item
);
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
=
gnt_menuitem_get_text
(
item
)[
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
{
GntMenu
*
sub
=
GNT_MENU
(
gnt_menuitem_get_submenu
(
item
));
if
(
sub
)
{
gint
x
,
y
;
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
);
gnt_menuitem_set_position
(
item
,
widget
->
priv
.
x
+
widget
->
priv
.
width
-
1
,
widget
->
priv
.
y
+
gnt_tree_get_selection_visible_line
(
GNT_TREE
(
menu
)));
}
gnt_menuitem_get_position
(
item
,
&
x
,
&
y
);
gnt_widget_set_position
(
GNT_WIDGET
(
sub
),
x
,
y
);
gnt_widget_set_visible
(
GNT_WIDGET
(
sub
),
TRUE
);
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
);
guint
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
)
{
GntMenuItem
*
item
;
GList
*
it
;
if
(
strcmp
(
text
,
GNT_KEY_LEFT
)
==
0
)
{
do
{
if
(
menu
->
selected
==
0
)
menu
->
selected
=
g_list_length
(
menu
->
list
)
-
1
;
else
menu
->
selected
--
;
it
=
g_list_nth
(
menu
->
list
,
menu
->
selected
);
item
=
it
?
it
->
data
:
NULL
;
}
while
(
!
gnt_menuitem_is_visible
(
item
));
}
else
if
(
strcmp
(
text
,
GNT_KEY_RIGHT
)
==
0
)
{
do
{
menu
->
selected
++
;
if
(
menu
->
selected
>=
g_list_length
(
menu
->
list
))
menu
->
selected
=
0
;
it
=
g_list_nth
(
menu
->
list
,
menu
->
selected
);
item
=
it
?
it
->
data
:
NULL
;
}
while
(
!
gnt_menuitem_is_visible
(
item
));
}
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
&&
gnt_menuitem_get_submenu
(
item
))
{
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_free_full
(
menu
->
list
,
g_object_unref
);
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
*
widget_class
=
GNT_WIDGET_CLASS
(
klass
);
GntTreeClass
*
tree_class
=
GNT_TREE_CLASS
(
klass
);
org_destroy
=
widget_class
->
destroy
;
org_map
=
widget_class
->
map
;
org_draw
=
widget_class
->
draw
;
org_key_pressed
=
widget_class
->
key_pressed
;
org_size_request
=
widget_class
->
size_request
;
org_clicked
=
widget_class
->
clicked
;
widget_class
->
destroy
=
gnt_menu_destroy
;
widget_class
->
draw
=
gnt_menu_draw
;
widget_class
->
map
=
gnt_menu_map
;
widget_class
->
size_request
=
gnt_menu_size_request
;
widget_class
->
key_pressed
=
gnt_menu_key_pressed
;
widget_class
->
activate
=
gnt_menu_activate
;
widget_class
->
hide
=
gnt_menu_hide
;
widget_class
->
clicked
=
gnt_menu_clicked
;
tree_class
->
toggled
=
gnt_menu_toggled
;
}
static
void
gnt_menu_init
(
GntMenu
*
menu
)
{
GntWidget
*
widget
=
GNT_WIDGET
(
menu
);
gnt_widget_set_has_shadow
(
widget
,
FALSE
);
gnt_widget_set_has_border
(
widget
,
FALSE
);
gnt_widget_set_take_focus
(
widget
,
TRUE
);
gnt_widget_set_transient
(
widget
,
TRUE
);
gnt_widget_set_disable_actions
(
widget
,
TRUE
);
}
/******************************************************************************
* GntMenu API
*****************************************************************************/
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_set_show_separator
(
GNT_TREE
(
widget
),
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_set_has_border
(
widget
,
TRUE
);
}
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
;
}
/* Internal. */
GntMenuType
gnt_menu_get_menutype
(
GntMenu
*
menu
)
{
g_return_val_if_fail
(
GNT_IS_MENU
(
menu
),
0
);
return
menu
->
type
;
}
/* Internal. */
GntMenuItem
*
gnt_menu_get_selected_item
(
GntMenu
*
menu
)
{
g_return_val_if_fail
(
GNT_IS_MENU
(
menu
),
NULL
);
return
g_list_nth_data
(
menu
->
list
,
menu
->
selected
);
}
/* Internal. */
GntMenu
*
gnt_menu_get_parent_menu
(
GntMenu
*
menu
)
{
g_return_val_if_fail
(
GNT_IS_MENU
(
menu
),
NULL
);
return
menu
->
parentmenu
;
}
/* Internal. */
GntMenu
*
gnt_menu_get_submenu
(
GntMenu
*
menu
)
{
g_return_val_if_fail
(
GNT_IS_MENU
(
menu
),
NULL
);
return
menu
->
submenu
;
}