1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/**
* @file
* @section AUTHORS
*
* Authors:
* Eamon Walsh <ewalsh@tycho.nsa.gov>
*
* @section LICENSE
*
* This file is in the public domain.
*
* @section DESCRIPTION
*
* This is the implementation of buffer objects, which represent regions of
* memory, provided by clients, that contain graphical content.
*/
#ifndef _LINPICKER_BUFFER_H_
#define _LINPICKER_BUFFER_H_
#include <directfb.h>
#include "sys-queue.h"
#include "view.h"
#define BUFFER_FLAG_DESKTOP_BG 0x1 /* buffer is the desktop background */
#define BUFFER_FLAG_SERVER_BG 0x2 /* buffer is the server background */
struct buffer {
int id; /* buffer id */
unsigned int flags; /* properties of the buffer */
struct view_tailq views; /* list of views into this buffer */
struct view *bg_view; /* view of entire buffer */
struct client *client; /* client owner */
LIST_ENTRY(buffer) client_next; /* next buffer of the same client */
LIST_ENTRY(buffer) display_next; /* next buffer of the same display */
DFBSurfaceDescription desc; /* surface parameters */
int xoff, yoff; /* buffer screen offset */
IDirectFBSurface *bsurface; /* buffer surface */
void *private; /* display subsystem private data */
};
LIST_HEAD(buf_list, buffer);
TAILQ_HEAD(buf_tailq, buffer);
CIRCLEQ_HEAD(buf_cirq, buffer);
struct buffer *
buffer_lookup(int domid, int buf_id);
struct buffer *
buffer_new(struct client *client, const DFBSurfaceDescription *desc, unsigned int flags);
void
buffer_remove(struct buffer *b);
void
buffer_refresh(struct buffer *b, int x, int y, int w, int h);
int
buffer_resize(struct buffer *b, const DFBSurfaceDescription *desc);
#endif /* _LINPICKER_BUFFER_H_ */
|
