sync code with last improvements from OpenBSD

xserver/hw/xwin/winallpriv.c

@@ -0,0 +1,169 @@
+/*
+ *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
+ *
+ *Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ *"Software"), to deal in the Software without restriction, including
+ *without limitation the rights to use, copy, modify, merge, publish,
+ *distribute, sublicense, and/or sell copies of the Software, and to
+ *permit persons to whom the Software is furnished to do so, subject to
+ *the following conditions:
+ *
+ *The above copyright notice and this permission notice shall be
+ *included in all copies or substantial portions of the Software.
+ *
+ *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
+ *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *Except as contained in this notice, the name of the XFree86 Project
+ *shall not be used in advertising or otherwise to promote the sale, use
+ *or other dealings in this Software without prior written authorization
+ *from the XFree86 Project.
+ *
+ * Authors:	Keith Packard, MIT X Consortium
+ *		Harold L Hunt II
+ */
+
+#ifdef HAVE_XWIN_CONFIG_H
+#include <xwin-config.h>
+#endif
+#include "win.h"
+
+/* See Porting Layer Definition - p. 58 */
+/*
+ * Allocate indexes for the privates that we use.
+ * Allocate memory directly for the screen privates.
+ * Reserve space in GCs and Pixmaps for our privates.
+ * Colormap privates are handled in winAllocateCmapPrivates ()
+ */
+
+Bool
+winAllocatePrivates(ScreenPtr pScreen)
+{
+    winPrivScreenPtr pScreenPriv;
+
+#if CYGDEBUG
+    winDebug("winAllocateScreenPrivates - g_ulServerGeneration: %lu "
+             "serverGeneration: %lu\n", g_ulServerGeneration, serverGeneration);
+#endif
+
+    /* We need a new slot for our privates if the screen gen has changed */
+    if (g_ulServerGeneration != serverGeneration) {
+        g_ulServerGeneration = serverGeneration;
+    }
+
+    /* Allocate memory for the screen private structure */
+    pScreenPriv = malloc(sizeof(winPrivScreenRec));
+    if (!pScreenPriv) {
+        ErrorF("winAllocateScreenPrivates - malloc () failed\n");
+        return FALSE;
+    }
+
+    /* Initialize the memory of the private structure */
+    ZeroMemory(pScreenPriv, sizeof(winPrivScreenRec));
+
+    /* Initialize private structure members */
+    pScreenPriv->fActive = TRUE;
+
+    /* Register our screen private */
+    if (!dixRegisterPrivateKey(g_iScreenPrivateKey, PRIVATE_SCREEN, 0)) {
+        ErrorF("winAllocatePrivates - AllocateScreenPrivate () failed\n");
+        return FALSE;
+    }
+
+    /* Save the screen private pointer */
+    winSetScreenPriv(pScreen, pScreenPriv);
+
+    /* Reserve Pixmap memory for our privates */
+    if (!dixRegisterPrivateKey
+        (g_iPixmapPrivateKey, PRIVATE_PIXMAP, sizeof(winPrivPixmapRec))) {
+        ErrorF("winAllocatePrivates - AllocatePixmapPrivates () failed\n");
+        return FALSE;
+    }
+
+    /* Reserve Window memory for our privates */
+    if (!dixRegisterPrivateKey
+        (g_iWindowPrivateKey, PRIVATE_WINDOW, sizeof(winPrivWinRec))) {
+        ErrorF("winAllocatePrivates () - AllocateWindowPrivates () failed\n");
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+/*
+ * Colormap privates may be allocated after the default colormap has
+ * already been created for some screens.  This initialization procedure
+ * is called for each default colormap that is found.
+ */
+
+Bool
+winInitCmapPrivates(ColormapPtr pcmap, int i)
+{
+#if CYGDEBUG
+    winDebug("winInitCmapPrivates\n");
+#endif
+
+    /*
+     * I see no way that this function can do anything useful
+     * with only a ColormapPtr.  We don't have the index for
+     * our dev privates yet, so we can't really initialize
+     * anything.  Perhaps I am misunderstanding the purpose
+     * of this function.
+     */
+    /*  That's definitely true.
+     *  I therefore changed the API and added the index as argument.
+     */
+    return TRUE;
+}
+
+/*
+ * Allocate memory for our colormap privates
+ */
+
+Bool
+winAllocateCmapPrivates(ColormapPtr pCmap)
+{
+    winPrivCmapPtr pCmapPriv;
+    static unsigned long s_ulPrivateGeneration = 0;
+
+#if CYGDEBUG
+    winDebug("winAllocateCmapPrivates\n");
+#endif
+
+    /* Get a new privates index when the server generation changes */
+    if (s_ulPrivateGeneration != serverGeneration) {
+        /* Save the new server generation */
+        s_ulPrivateGeneration = serverGeneration;
+    }
+
+    /* Allocate memory for our private structure */
+    pCmapPriv = malloc(sizeof(winPrivCmapRec));
+    if (!pCmapPriv) {
+        ErrorF("winAllocateCmapPrivates - malloc () failed\n");
+        return FALSE;
+    }
+
+    /* Initialize the memory of the private structure */
+    ZeroMemory(pCmapPriv, sizeof(winPrivCmapRec));
+
+    /* Register our colourmap private */
+    if (!dixRegisterPrivateKey(g_iCmapPrivateKey, PRIVATE_COLORMAP, 0)) {
+        ErrorF("winAllocateCmapPrivates - AllocateCmapPrivate () failed\n");
+        return FALSE;
+    }
+
+    /* Save the cmap private pointer */
+    winSetCmapPriv(pCmap, pCmapPriv);
+
+#if CYGDEBUG
+    winDebug("winAllocateCmapPrivates - Returning\n");
+#endif
+
+    return TRUE;
+}