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
45 Bool
winAllocatePrivates(ScreenPtr pScreen)46 winAllocatePrivates(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 /* Intialize 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
105 Bool
winInitCmapPrivates(ColormapPtr pcmap,int i)106 winInitCmapPrivates(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
129 Bool
winAllocateCmapPrivates(ColormapPtr pCmap)130 winAllocateCmapPrivates(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