Track screens' installed colormaps as screen privates.

Several DDXes allow each screen to have at most one (or in some cases,
exactly one) installed colormap. These all use the same pattern: Declare
a global-lifetime array of MAXSCREENS ColormapPtrs, and index it by
screen number. This patch converts most of those to use screen privates
instead.

Signed-off-by: Jamey Sharp <jamey@minilop.net>
Acked-by: Tiago Vignatti <tiago.vignatti@nokia.com>

2 files changed, 22 insertions, 23 deletions

diff --git a/hw/vfb/InitOutput.c b/hw/vfb/InitOutput.c
index 60915fdbf..b2baa197f 100644
--- a/hw/vfb/InitOutput.c
+++ b/hw/vfb/InitOutput.c
@@ -427,14 +427,18 @@ ddxProcessArgument(int argc, char *argv[], int i)
     return 0;
 }
 
-static ColormapPtr InstalledMaps[MAXSCREENS];
+static int cmapScrPrivateKeyIndex;
+static DevPrivateKey cmapScrPrivateKey = &cmapScrPrivateKeyIndex;
+
+#define GetInstalledColormap(s) ((ColormapPtr) dixLookupPrivate(&(s)->devPrivates, cmapScrPrivateKey))
+#define SetInstalledColormap(s,c) (dixSetPrivate(&(s)->devPrivates, cmapScrPrivateKey, c))
 
 static int
 vfbListInstalledColormaps(ScreenPtr pScreen, Colormap *pmaps)
 {
     /* By the time we are processing requests, we can guarantee that there
      * is always a colormap installed */
-    *pmaps = InstalledMaps[pScreen->myNum]->mid;
+    *pmaps = GetInstalledColormap(pScreen)->mid;
     return (1);
 }
 
@@ -442,8 +446,7 @@ vfbListInstalledColormaps(ScreenPtr pScreen, Colormap *pmaps)
 static void
 vfbInstallColormap(ColormapPtr pmap)
 {
-    int index = pmap->pScreen->myNum;
-    ColormapPtr oldpmap = InstalledMaps[index];
+    ColormapPtr oldpmap = GetInstalledColormap(pmap->pScreen);
 
     if (pmap != oldpmap)
     {
@@ -459,7 +462,7 @@ vfbInstallColormap(ColormapPtr pmap)
 	if(oldpmap != (ColormapPtr)None)
 	    WalkTree(pmap->pScreen, TellLostMap, (char *)&oldpmap->mid);
 	/* Install pmap */
-	InstalledMaps[index] = pmap;
+	SetInstalledColormap(pmap->pScreen, pmap);
 	WalkTree(pmap->pScreen, TellGainedMap, (char *)&pmap->mid);
 
 	entries = pmap->pVisual->ColormapEntries;
@@ -500,7 +503,7 @@ vfbInstallColormap(ColormapPtr pmap)
 static void
 vfbUninstallColormap(ColormapPtr pmap)
 {
-    ColormapPtr curpmap = InstalledMaps[pmap->pScreen->myNum];
+    ColormapPtr curpmap = GetInstalledColormap(pmap->pScreen);
 
     if(pmap == curpmap)
     {
@@ -521,7 +524,7 @@ vfbStoreColors(ColormapPtr pmap, int ndef, xColorItem *pdefs)
     XWDColor *pXWDCmap;
     int i;
 
-    if (pmap != InstalledMaps[pmap->pScreen->myNum])
+    if (pmap != GetInstalledColormap(pmap->pScreen))
     {
 	return;
     }
@@ -830,10 +833,10 @@ vfbCloseScreen(int index, ScreenPtr pScreen)
 
     /*
      * XXX probably lots of stuff to clean.  For now,
-     * clear InstalledMaps[] so that server reset works correctly.
+     * clear installed colormaps so that server reset works correctly.
      */
-    for (i = 0; i < MAXSCREENS; i++)
-	InstalledMaps[i] = NULL;
+    for (i = 0; i < screenInfo.numScreens; i++)
+	SetInstalledColormap(screenInfo.screens[i], NULL);
 
     return pScreen->CloseScreen(index, pScreen);
 }
diff --git a/hw/xnest/Color.c b/hw/xnest/Color.c
index dc749478f..2e6de15e4 100644
--- a/hw/xnest/Color.c
+++ b/hw/xnest/Color.c
@@ -34,7 +34,11 @@ is" without express or implied warranty.
 #include "XNWindow.h"
 #include "Args.h"
 
-static ColormapPtr InstalledMaps[MAXSCREENS];
+static int cmapScrPrivateKeyIndex;
+static DevPrivateKey cmapScrPrivateKey = &cmapScrPrivateKeyIndex;
+
+#define GetInstalledColormap(s) ((ColormapPtr) dixLookupPrivate(&(s)->devPrivates, cmapScrPrivateKey))
+#define SetInstalledColormap(s,c) (dixSetPrivate(&(s)->devPrivates, cmapScrPrivateKey, c))
 
 Bool
 xnestCreateColormap(ColormapPtr pCmap)
@@ -332,11 +336,7 @@ xnestDirectUninstallColormaps(ScreenPtr pScreen)
 void
 xnestInstallColormap(ColormapPtr pCmap)
 {
-  int index;
-  ColormapPtr pOldCmap;
-  
-  index = pCmap->pScreen->myNum;
-  pOldCmap = InstalledMaps[index];
+  ColormapPtr pOldCmap = GetInstalledColormap(pCmap->pScreen);
   
   if(pCmap != pOldCmap)
     {
@@ -346,7 +346,7 @@ xnestInstallColormap(ColormapPtr pCmap)
       if(pOldCmap != (ColormapPtr)None)
 	WalkTree(pCmap->pScreen, TellLostMap, (pointer)&pOldCmap->mid);
       
-      InstalledMaps[index] = pCmap;
+      SetInstalledColormap(pCmap->pScreen, pCmap);
       WalkTree(pCmap->pScreen, TellGainedMap, (pointer)&pCmap->mid);
       
       xnestSetInstalledColormapWindows(pCmap->pScreen);
@@ -357,11 +357,7 @@ xnestInstallColormap(ColormapPtr pCmap)
 void
 xnestUninstallColormap(ColormapPtr pCmap)
 {
-  int index;
-  ColormapPtr pCurCmap;
-  
-  index = pCmap->pScreen->myNum;
-  pCurCmap = InstalledMaps[index];
+  ColormapPtr pCurCmap = GetInstalledColormap(pCmap->pScreen);
   
   if(pCmap == pCurCmap)
     {
@@ -382,7 +378,7 @@ int
 xnestListInstalledColormaps(ScreenPtr pScreen, Colormap *pCmapIDs)
 {
   if (xnestInstalledDefaultColormap) {
-    *pCmapIDs = InstalledMaps[pScreen->myNum]->mid;
+    *pCmapIDs = GetInstalledColormap(pScreen)->mid;
     return 1;
   }
   else