1/*
2 *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
3 *
4 *Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 *"Software"), to deal in the Software without restriction, including
7 *without limitation the rights to use, copy, modify, merge, publish,
8 *distribute, sublicense, and/or sell copies of the Software, and to
9 *permit persons to whom the Software is furnished to do so, subject to
10 *the following conditions:
11 *
12 *The above copyright notice and this permission notice shall be
13 *included in all copies or substantial portions of the Software.
14 *
15 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
19 *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
20 *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
21 *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 *
23 *Except as contained in this notice, the name of the XFree86 Project
24 *shall not be used in advertising or otherwise to promote the sale, use
25 *or other dealings in this Software without prior written authorization
26 *from the XFree86 Project.
27 *
28 * Authors:	Keith Packard, MIT X Consortium
29 *		Harold L Hunt II
30 */
31
32#ifdef HAVE_XWIN_CONFIG_H
33#include <xwin-config.h>
34#endif
35#include "win.h"
36
37/* See Porting Layer Definition - p. 58 */
38/*
39 * Allocate indexes for the privates that we use.
40 * Allocate memory directly for the screen privates.
41 * Reserve space in GCs and Pixmaps for our privates.
42 * Colormap privates are handled in winAllocateCmapPrivates ()
43 */
44
45Bool
46winAllocatePrivates(ScreenPtr pScreen)
47{
48    winPrivScreenPtr pScreenPriv;
49
50#if CYGDEBUG
51    winDebug("winAllocateScreenPrivates - g_ulServerGeneration: %lu "
52             "serverGeneration: %lu\n", g_ulServerGeneration, serverGeneration);
53#endif
54
55    /* We need a new slot for our privates if the screen gen has changed */
56    if (g_ulServerGeneration != serverGeneration) {
57        g_ulServerGeneration = serverGeneration;
58    }
59
60    /* Allocate memory for the screen private structure */
61    pScreenPriv = malloc(sizeof(winPrivScreenRec));
62    if (!pScreenPriv) {
63        ErrorF("winAllocateScreenPrivates - malloc () failed\n");
64        return FALSE;
65    }
66
67    /* Initialize the memory of the private structure */
68    ZeroMemory(pScreenPriv, sizeof(winPrivScreenRec));
69
70    /* Initialize private structure members */
71    pScreenPriv->fActive = TRUE;
72
73    /* Register our screen private */
74    if (!dixRegisterPrivateKey(g_iScreenPrivateKey, PRIVATE_SCREEN, 0)) {
75        ErrorF("winAllocatePrivates - AllocateScreenPrivate () failed\n");
76        return FALSE;
77    }
78
79    /* Save the screen private pointer */
80    winSetScreenPriv(pScreen, pScreenPriv);
81
82    /* Reserve Pixmap memory for our privates */
83    if (!dixRegisterPrivateKey
84        (g_iPixmapPrivateKey, PRIVATE_PIXMAP, sizeof(winPrivPixmapRec))) {
85        ErrorF("winAllocatePrivates - AllocatePixmapPrivates () failed\n");
86        return FALSE;
87    }
88
89    /* Reserve Window memory for our privates */
90    if (!dixRegisterPrivateKey
91        (g_iWindowPrivateKey, PRIVATE_WINDOW, sizeof(winPrivWinRec))) {
92        ErrorF("winAllocatePrivates () - AllocateWindowPrivates () failed\n");
93        return FALSE;
94    }
95
96    return TRUE;
97}
98
99/*
100 * Colormap privates may be allocated after the default colormap has
101 * already been created for some screens.  This initialization procedure
102 * is called for each default colormap that is found.
103 */
104
105Bool
106winInitCmapPrivates(ColormapPtr pcmap, int i)
107{
108#if CYGDEBUG
109    winDebug("winInitCmapPrivates\n");
110#endif
111
112    /*
113     * I see no way that this function can do anything useful
114     * with only a ColormapPtr.  We don't have the index for
115     * our dev privates yet, so we can't really initialize
116     * anything.  Perhaps I am misunderstanding the purpose
117     * of this function.
118     */
119    /*  That's definitely true.
120     *  I therefore changed the API and added the index as argument.
121     */
122    return TRUE;
123}
124
125/*
126 * Allocate memory for our colormap privates
127 */
128
129Bool
130winAllocateCmapPrivates(ColormapPtr pCmap)
131{
132    winPrivCmapPtr pCmapPriv;
133    static unsigned long s_ulPrivateGeneration = 0;
134
135#if CYGDEBUG
136    winDebug("winAllocateCmapPrivates\n");
137#endif
138
139    /* Get a new privates index when the server generation changes */
140    if (s_ulPrivateGeneration != serverGeneration) {
141        /* Save the new server generation */
142        s_ulPrivateGeneration = serverGeneration;
143    }
144
145    /* Allocate memory for our private structure */
146    pCmapPriv = malloc(sizeof(winPrivCmapRec));
147    if (!pCmapPriv) {
148        ErrorF("winAllocateCmapPrivates - malloc () failed\n");
149        return FALSE;
150    }
151
152    /* Initialize the memory of the private structure */
153    ZeroMemory(pCmapPriv, sizeof(winPrivCmapRec));
154
155    /* Register our colourmap private */
156    if (!dixRegisterPrivateKey(g_iCmapPrivateKey, PRIVATE_COLORMAP, 0)) {
157        ErrorF("winAllocateCmapPrivates - AllocateCmapPrivate () failed\n");
158        return FALSE;
159    }
160
161    /* Save the cmap private pointer */
162    winSetCmapPriv(pCmap, pCmapPriv);
163
164#if CYGDEBUG
165    winDebug("winAllocateCmapPrivates - Returning\n");
166#endif
167
168    return TRUE;
169}
170