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Dogcows Code - chaz/openbox/blob - plugins/resistance/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 "parser/parse.h"
7 #include "resistance.h"
10 static int win_resistance
;
11 static int edge_resistance
;
13 static void parse_xml(xmlDocPtr doc
, xmlNodePtr node
, void *d
)
17 node
= node
->xmlChildrenNode
;
18 if ((n
= parse_find_node("strength", node
)))
19 win_resistance
= parse_int(doc
, n
);
20 if ((n
= parse_find_node("screen_edge_strength", node
)))
21 edge_resistance
= parse_int(doc
, n
);
24 void plugin_setup_config()
26 win_resistance
= edge_resistance
= DEFAULT_RESISTANCE
;
28 parse_register("resistance", parse_xml
, NULL
);
31 static void resist_move(ObClient
*c
, int *x
, int *y
)
36 int l
, t
, r
, b
; /* requested edges */
37 int al
, at
, ar
, ab
; /* screen area edges */
38 int cl
, ct
, cr
, cb
; /* current edges */
39 int w
, h
; /* current size */
40 ObClient
*snapx
= NULL
, *snapy
= NULL
;
42 w
= c
->frame
->area
.width
;
43 h
= c
->frame
->area
.height
;
50 cl
= c
->frame
->area
.x
;
51 ct
= c
->frame
->area
.y
;
52 cr
= cl
+ c
->frame
->area
.width
- 1;
53 cb
= ct
+ c
->frame
->area
.height
- 1;
55 /* snap to other clients */
57 for (it
= stacking_list
; it
!= NULL
; it
= it
->next
) {
59 int tl
, tt
, tr
, tb
; /* 1 past the target's edges on each side */
61 if (!WINDOW_IS_CLIENT(it
->data
))
64 /* don't snap to self or non-visibles */
65 if (!target
->frame
->visible
|| target
== c
) continue;
67 tl
= target
->frame
->area
.x
- 1;
68 tt
= target
->frame
->area
.y
- 1;
69 tr
= tl
+ target
->frame
->area
.width
+ 1;
70 tb
= tt
+ target
->frame
->area
.height
+ 1;
72 /* snapx and snapy ensure that the window snaps to the top-most
73 window edge available, without going all the way from
74 bottom-to-top in the stacking list
77 if (ct
< tb
&& cb
> tt
) {
78 if (cl
>= tr
&& l
< tr
&& l
>= tr
- win_resistance
)
79 *x
= tr
, snapx
= target
;
80 else if (cr
<= tl
&& r
> tl
&& r
<= tl
+ win_resistance
)
81 *x
= tl
- w
+ 1, snapx
= target
;
83 /* try to corner snap to the window */
84 if (ct
> tt
&& t
<= tt
&& t
> tt
- win_resistance
)
85 *y
= tt
+ 1, snapy
= target
;
86 else if (cb
< tb
&& b
>= tb
&& b
< tb
+ win_resistance
)
87 *y
= tb
- h
, snapy
= target
;
92 if (cl
< tr
&& cr
> tl
) {
93 if (ct
>= tb
&& t
< tb
&& t
>= tb
- win_resistance
)
94 *y
= tb
, snapy
= target
;
95 else if (cb
<= tt
&& b
> tt
&& b
<= tt
+ win_resistance
)
96 *y
= tt
- h
+ 1, snapy
= target
;
98 /* try to corner snap to the window */
99 if (cl
> tl
&& l
<= tl
&& l
> tl
- win_resistance
)
100 *x
= tl
+ 1, snapx
= target
;
101 else if (cr
< tr
&& r
>= tr
&& r
< tr
+ win_resistance
)
102 *x
= tr
- w
, snapx
= target
;
107 if (snapx
&& snapy
) break;
110 /* get the screen boundaries */
111 if (edge_resistance
) {
112 for (i
= 0; i
< screen_num_monitors
; ++i
) {
113 area
= screen_area_monitor(c
->desktop
, i
);
115 if (!RECT_INTERSECTS_RECT(*area
, c
->frame
->area
))
120 ar
= al
+ area
->width
- 1;
121 ab
= at
+ area
->height
- 1;
123 /* snap to screen edges */
124 if (cl
>= al
&& l
< al
&& l
>= al
- edge_resistance
)
126 else if (cr
<= ar
&& r
> ar
&& r
<= ar
+ edge_resistance
)
128 if (ct
>= at
&& t
< at
&& t
>= at
- edge_resistance
)
130 else if (cb
<= ab
&& b
> ab
&& b
< ab
+ edge_resistance
)
136 static void resist_size(ObClient
*c
, int *w
, int *h
, ObCorner corn
)
139 ObClient
*target
; /* target */
140 int l
, t
, r
, b
; /* my left, top, right and bottom sides */
141 int dlt
, drb
; /* my destination left/top and right/bottom sides */
142 int tl
, tt
, tr
, tb
; /* target's left, top, right and bottom bottom sides */
144 int al
, at
, ar
, ab
; /* screen boundaries */
145 ObClient
*snapx
= NULL
, *snapy
= NULL
;
147 /* don't snap windows with size increments */
148 if (c
->size_inc
.width
> 1 || c
->size_inc
.height
> 1)
151 l
= c
->frame
->area
.x
;
152 r
= l
+ c
->frame
->area
.width
- 1;
153 t
= c
->frame
->area
.y
;
154 b
= t
+ c
->frame
->area
.height
- 1;
156 /* get the screen boundaries */
157 area
= screen_area(c
->desktop
);
160 ar
= al
+ area
->width
- 1;
161 ab
= at
+ area
->height
- 1;
163 /* snap to other windows */
164 if (win_resistance
) {
165 for (it
= stacking_list
; it
!= NULL
; it
= it
->next
) {
166 if (!WINDOW_IS_CLIENT(it
->data
))
170 /* don't snap to invisibles or ourself */
171 if (!target
->frame
->visible
|| target
== c
) continue;
173 tl
= target
->frame
->area
.x
;
174 tr
= target
->frame
->area
.x
+ target
->frame
->area
.width
- 1;
175 tt
= target
->frame
->area
.y
;
176 tb
= target
->frame
->area
.y
+ target
->frame
->area
.height
- 1;
179 /* horizontal snapping */
180 if (t
< tb
&& b
> tt
) {
182 case OB_CORNER_TOPLEFT
:
183 case OB_CORNER_BOTTOMLEFT
:
185 drb
= r
+ *w
- c
->frame
->area
.width
;
186 if (r
< tl
&& drb
>= tl
&& drb
< tl
+ win_resistance
)
187 *w
= tl
- l
, snapx
= target
;
189 case OB_CORNER_TOPRIGHT
:
190 case OB_CORNER_BOTTOMRIGHT
:
191 dlt
= l
- *w
+ c
->frame
->area
.width
;
193 if (l
> tr
&& dlt
<= tr
&& dlt
> tr
- win_resistance
)
194 *w
= r
- tr
, snapx
= target
;
201 /* vertical snapping */
202 if (l
< tr
&& r
> tl
) {
204 case OB_CORNER_TOPLEFT
:
205 case OB_CORNER_TOPRIGHT
:
207 drb
= b
+ *h
- c
->frame
->area
.height
;
208 if (b
< tt
&& drb
>= tt
&& drb
< tt
+ win_resistance
)
209 *h
= tt
- t
, snapy
= target
;
211 case OB_CORNER_BOTTOMLEFT
:
212 case OB_CORNER_BOTTOMRIGHT
:
213 dlt
= t
- *h
+ c
->frame
->area
.height
;
215 if (t
> tb
&& dlt
<= tb
&& dlt
> tb
- win_resistance
)
216 *h
= b
- tb
, snapy
= target
;
222 /* snapped both ways */
223 if (snapx
&& snapy
) break;
227 /* snap to screen edges */
229 if (edge_resistance
) {
230 /* horizontal snapping */
232 case OB_CORNER_TOPLEFT
:
233 case OB_CORNER_BOTTOMLEFT
:
235 drb
= r
+ *w
- c
->frame
->area
.width
;
236 if (r
<= ar
&& drb
> ar
&& drb
<= ar
+ edge_resistance
)
239 case OB_CORNER_TOPRIGHT
:
240 case OB_CORNER_BOTTOMRIGHT
:
241 dlt
= l
- *w
+ c
->frame
->area
.width
;
243 if (l
>= al
&& dlt
< al
&& dlt
>= al
- edge_resistance
)
248 /* vertical snapping */
250 case OB_CORNER_TOPLEFT
:
251 case OB_CORNER_TOPRIGHT
:
253 drb
= b
+ *h
- c
->frame
->area
.height
;
254 if (b
<= ab
&& drb
> ab
&& drb
<= ab
+ edge_resistance
)
257 case OB_CORNER_BOTTOMLEFT
:
258 case OB_CORNER_BOTTOMRIGHT
:
259 dlt
= t
- *h
+ c
->frame
->area
.height
;
261 if (t
>= at
&& dlt
< at
&& dlt
>= at
- edge_resistance
)
268 static void event(ObEvent
*e
, void *foo
)
270 if (e
->type
== Event_Client_Moving
)
271 resist_move(e
->data
.c
.client
, &e
->data
.c
.num
[0], &e
->data
.c
.num
[1]);
272 else if (e
->type
== Event_Client_Resizing
)
273 resist_size(e
->data
.c
.client
, &e
->data
.c
.num
[0], &e
->data
.c
.num
[1],
277 void plugin_startup()
279 dispatch_register(Event_Client_Moving
| Event_Client_Resizing
,
280 (EventHandler
)event
, NULL
);
283 void plugin_shutdown()
285 dispatch_register(0, (EventHandler
)event
, NULL
);
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