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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [services/] [gfx/] [mw/] [v2_0/] [src/] [demos/] [nanowm/] [wlist.c] - Blame information for rev 174

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/*
 * NanoWM - Window Manager for Nano-X
 *
 * Copyright (C) 2000 Greg Haerr <greg@censoft.com>
 * Copyright (C) 2000 Alex Holden <alex@linuxhacker.org>
 */
#include <stdio.h>
#include <stdlib.h>
#define MWINCLUDECOLORS
#include "nano-X.h"
/* Uncomment this to get debugging output from this file */
/*#define DEBUG*/
 
#include "nanowm.h"
 
static win *windows = NULL;
 
/*
 * Find the windowlist entry for the specified window ID and return a pointer
 * to it, or NULL if it isn't in the list.
 */
win *find_window(GR_WINDOW_ID wid)
{
        win *w = windows;
 
        Dprintf("Looking for window %d... ", wid);
 
        while(w) {
                Dprintf("%d ", w->wid);
                if(w->wid == wid) {
                        Dprintf("found it!\n");
                        return w;
                }
                w = w->next;
        }
 
        Dprintf("Nope, %d is not in the list\n", wid);
        return NULL;
}
 
/*
 * Add a new entry to the front of the windowlist.
 * Returns -1 on failure or 0 on success.
 */
int add_window(win *window)
{
        win *w;
 
        Dprintf("Adding window %d\n", window->wid);
 
        if(!(w = malloc(sizeof(win)))) return -1;
 
        w->wid = window->wid;
        w->pid = window->pid;
        w->type = window->type;
        w->sizing = GR_FALSE;   /* window->sizing*/
        w->active = window->active;
        w->clientid = window->clientid;
        w->data = window->data;
        w->next = windows;
        windows = w;
 
        return 0;
}
 
/*
 * Remove an entry from the windowlist.
 * We must search through the list for it so that we can find the previous
 * entry in the list and fix the next pointer. The alternative is to add a
 * prev pointer to the structure which would increase the memory usage.
 * Returns -1 on failure or 0 on success.
 */
int remove_window(win *window)
{
        win *w = windows;
        win *prev = NULL;
 
        while(w) {
                if(w == window) {
                        if(!prev) windows = w->next;
                        else prev->next = w->next;
                        if(w->data) free(w->data);
                        free(w);
                        return 0;
                }
                prev = w;
                w = w->next;
        }
 
        return -1;
}
 
/*
 * Remove an entry and all it's children from the windowlist.
 * Returns -1 on failure or 0 on success.
 */
int remove_window_and_children(win *window)
{
        win *t, *w = windows;
        win *prev = NULL;
        GR_WINDOW_ID pid = window->wid;
 
        Dprintf("Removing window %d and children\n", window->wid);
 
        while(w) {
                Dprintf("Examining window %d (pid %d)\n", w->wid, w->pid);
                if((w->pid == pid) || (w == window)) {
                        Dprintf("Removing window %d (pid %d)\n", w->wid,
                                                                w->pid);
                        if(prev) prev->next = w->next;
                        else windows = w->next;
                        t = w->next;
                        if(w->data) free(w->data);
                        free(w);
                        w = t;
                        continue;
                }
                prev = w;
                w = w->next;
        }
 
        return -1;
}

Line No.	Rev	Author	Line
1	27	unneback	`/*`
2			`* NanoWM - Window Manager for Nano-X`
3			`*`
4			`* Copyright (C) 2000 Greg Haerr <greg@censoft.com>`
5			`* Copyright (C) 2000 Alex Holden <alex@linuxhacker.org>`
6			`*/`
7			`#include <stdio.h>`
8			`#include <stdlib.h>`
9			`#define MWINCLUDECOLORS`
10			`#include "nano-X.h"`
11			`/* Uncomment this to get debugging output from this file */`
12			`/#define DEBUG/`
13
14			`#include "nanowm.h"`
15
16			`static win *windows = NULL;`
17
18			`/*`
19			`* Find the windowlist entry for the specified window ID and return a pointer`
20			`* to it, or NULL if it isn't in the list.`
21			`*/`
22			`win *find_window(GR_WINDOW_ID wid)`
23			`{`
24			`win *w = windows;`
25
26			`Dprintf("Looking for window %d... ", wid);`
27
28			`while(w) {`
29			`Dprintf("%d ", w->wid);`
30			`if(w->wid == wid) {`
31			`Dprintf("found it!\n");`
32			`return w;`
33			`}`
34			`w = w->next;`
35			`}`
36
37			`Dprintf("Nope, %d is not in the list\n", wid);`
38			`return NULL;`
39			`}`
40
41			`/*`
42			`* Add a new entry to the front of the windowlist.`
43			`* Returns -1 on failure or 0 on success.`
44			`*/`
45			`int add_window(win *window)`
46			`{`
47			`win *w;`
48
49			`Dprintf("Adding window %d\n", window->wid);`
50
51			`if(!(w = malloc(sizeof(win)))) return -1;`
52
53			`w->wid = window->wid;`
54			`w->pid = window->pid;`
55			`w->type = window->type;`
56			`w->sizing = GR_FALSE; /* window->sizing*/`
57			`w->active = window->active;`
58			`w->clientid = window->clientid;`
59			`w->data = window->data;`
60			`w->next = windows;`
61			`windows = w;`
62
63			`return 0;`
64			`}`
65
66			`/*`
67			`* Remove an entry from the windowlist.`
68			`* We must search through the list for it so that we can find the previous`
69			`* entry in the list and fix the next pointer. The alternative is to add a`
70			`* prev pointer to the structure which would increase the memory usage.`
71			`* Returns -1 on failure or 0 on success.`
72			`*/`
73			`int remove_window(win *window)`
74			`{`
75			`win *w = windows;`
76			`win *prev = NULL;`
77
78			`while(w) {`
79			`if(w == window) {`
80			`if(!prev) windows = w->next;`
81			`else prev->next = w->next;`
82			`if(w->data) free(w->data);`
83			`free(w);`
84			`return 0;`
85			`}`
86			`prev = w;`
87			`w = w->next;`
88			`}`
89
90			`return -1;`
91			`}`
92
93			`/*`
94			`* Remove an entry and all it's children from the windowlist.`
95			`* Returns -1 on failure or 0 on success.`
96			`*/`
97			`int remove_window_and_children(win *window)`
98			`{`
99			`win t, w = windows;`
100			`win *prev = NULL;`
101			`GR_WINDOW_ID pid = window->wid;`
102
103			`Dprintf("Removing window %d and children\n", window->wid);`
104
105			`while(w) {`
106			`Dprintf("Examining window %d (pid %d)\n", w->wid, w->pid);`
107			`if((w->pid == pid) \|\| (w == window)) {`
108			`Dprintf("Removing window %d (pid %d)\n", w->wid,`
109			`w->pid);`
110			`if(prev) prev->next = w->next;`
111			`else windows = w->next;`
112			`t = w->next;`
113			`if(w->data) free(w->data);`
114			`free(w);`
115			`w = t;`
116			`continue;`
117			`}`
118			`prev = w;`
119			`w = w->next;`
120			`}`
121
122			`return -1;`
123			`}`

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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [services/] [gfx/] [mw/] [v2_0/] [src/] [demos/] [nanowm/] [wlist.c] - Blame information for rev 174