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Dogcows Code - chaz/openbox/blob - plugins/resistance.c
1 #include "../kernel/dispatch.h"
2 #include "../kernel/client.h"
3 #include "../kernel/frame.h"
4 #include "../kernel/stacking.h"
5 #include "../kernel/screen.h"
6 #include "../kernel/config.h"
9 #define DEFAULT_RESISTANCE 10
11 void plugin_setup_config()
15 config_def_set(config_def_new("resistance", Config_Integer
,
17 "The amount of resistance to provide when "
18 "moving windows past edges."
20 config_def_set(config_def_new("resistance.windows", Config_Bool
,
21 "Edge Resistance On Windows",
22 "Whether to provide edge resistance when "
23 "moving windows past the edge of another "
26 config_set("resistance.windows", Config_Bool
, val
);
29 static void resist(Client
*c
, int *x
, int *y
)
33 int l
, t
, r
, b
; /* requested edges */
34 int al
, at
, ar
, ab
; /* screen area edges */
35 int cl
, ct
, cr
, cb
; /* current edges */
36 int w
, h
; /* current size */
37 gboolean snapx
= FALSE
, snapy
= FALSE
;
38 ConfigValue resist
, window_resist
;
40 if (!config_get("resistance", Config_Integer
, &resist
) ||
42 resist
.integer
= DEFAULT_RESISTANCE
;
43 config_set("resistance", Config_Integer
, resist
);
45 if (!config_get("resistance.windows", Config_Bool
, &window_resist
))
46 g_assert_not_reached();
48 w
= c
->frame
->area
.width
;
49 h
= c
->frame
->area
.height
;
56 cl
= c
->frame
->area
.x
;
57 ct
= c
->frame
->area
.y
;
58 cr
= cl
+ c
->frame
->area
.width
- 1;
59 cb
= ct
+ c
->frame
->area
.height
- 1;
61 /* snap to other clients */
62 if (window_resist
.bool)
63 for (it
= stacking_list
; it
!= NULL
; it
= it
->next
) {
65 int tl
, tt
, tr
, tb
; /* 1 past the target's edges on each side */
68 /* don't snap to self or non-visibles */
69 if (!target
->frame
->visible
|| target
== c
) continue;
71 tl
= target
->frame
->area
.x
- 1;
72 tt
= target
->frame
->area
.y
- 1;
73 tr
= tl
+ target
->frame
->area
.width
+ 1;
74 tb
= tt
+ target
->frame
->area
.height
+ 1;
76 /* snapx and snapy ensure that the window snaps to the top-most
77 window edge available, without going all the way from
78 bottom-to-top in the stacking list
80 if (!snapx
&& cl
>= tr
&& l
< tr
&& l
>= tr
- resist
.integer
)
81 *x
= tr
, snapx
= TRUE
;
82 else if (!snapx
&& cr
<= tl
&& r
> tl
&& r
<= tl
+ resist
.integer
)
83 *x
= tl
- w
+ 1, snapx
= TRUE
;
84 else if (!snapy
&& ct
>= tb
&& t
< tb
&& t
>= tb
- resist
.integer
)
85 *y
= tb
, snapy
= TRUE
;
86 else if (!snapy
&& cb
<= tt
&& b
> tt
&& b
<= tt
+ resist
.integer
)
87 *y
= tt
- h
+ 1, snapy
= TRUE
;
89 if (snapx
&& snapy
) break;
92 /* get the screen boundaries */
93 area
= screen_area(c
->desktop
);
96 ar
= al
+ area
->width
- 1;
97 ab
= at
+ area
->height
- 1;
99 /* snap to screen edges */
100 if (cl
>= al
&& l
< al
&& l
>= al
- resist
.integer
)
102 else if (cr
<= ar
&& r
> ar
&& r
<= ar
+ resist
.integer
)
104 if (ct
>= at
&& t
< at
&& t
>= at
- resist
.integer
)
106 else if (cb
<= ab
&& b
> ab
&& b
< ab
+ resist
.integer
)
110 static void event(ObEvent
*e
, void *foo
)
112 g_assert(e
->type
== Event_Client_Moving
);
114 resist(e
->data
.c
.client
, &e
->data
.c
.num
[0], &e
->data
.c
.num
[1]);
117 void plugin_startup()
119 dispatch_register(Event_Client_Moving
, (EventHandler
)event
, NULL
);
122 void plugin_shutdown()
124 dispatch_register(0, (EventHandler
)event
, NULL
);
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