winex11.drv: Set the refresh rate for the virtual desktop to 60

[Jan Zerebecki]

If this patch is rejected from inclusion, please tell me why, as
I would have to ask anyway.

From: Jan Zerebecki <jan.wine at zerebecki.de>
Changelog:
winex11.drv: Set the refresh rate for the virtual desktop to 60
instead of 0. If HKCU\Software\Wine\X11 Driver\FakeRefreshRate is
set, it is interpreted as a comma delimited list of refresh rates
to use instead.
---

 dlls/winex11.drv/desktop.c |   57 +++++++++++++++++++++++++++++++-------------
 1 files changed, 40 insertions(+), 17 deletions(-)

diff --git a/dlls/winex11.drv/desktop.c b/dlls/winex11.drv/desktop.c
index 8863472..46bbd58 100644
--- a/dlls/winex11.drv/desktop.c
+++ b/dlls/winex11.drv/desktop.c
@@ -19,11 +19,14 @@
  */
 
 #include "config.h"
+#include <stdlib.h>
+#include <string.h>
 #include <X11/cursorfont.h>
 #include <X11/Xlib.h>
 
 #include "wine/winuser16.h"
 #include "win.h"
+#include "winreg.h"
 #include "ddrawi.h"
 #include "x11drv.h"
 #include "wine/debug.h"
@@ -42,27 +45,32 @@ static const unsigned int heights[] = {200, 300, 384, 480, 600,  768,  864, 1024
 #define NUM_DESKTOP_MODES (sizeof(widths) / sizeof(widths[0]))
 
 /* create the mode structures */
-static void make_modes(void)
+static void make_modes(char * refresh_rates)
 {
+    char *elem;
+    unsigned int refresh_rate;
     int i;
-    /* original specified desktop size */
-    X11DRV_Settings_AddOneMode(screen_width, screen_height, 0, 0);
-    for (i=0; i<NUM_DESKTOP_MODES; i++)
-    {
-        if ( (widths[i] <= max_width) && (heights[i] <= max_height) )
+
+    for(; ( elem = strsep(&refresh_rates, ",") ) && *elem && 0 <= ( refresh_rate = strtol(elem , NULL, 0) ); ) {
+        /* original specified desktop size */
+        X11DRV_Settings_AddOneMode(screen_width, screen_height, 0, refresh_rate);
+        for (i=0; i<NUM_DESKTOP_MODES; i++)
         {
-            if ( ( (widths[i] != max_width) || (heights[i] != max_height) ) &&
-                 ( (widths[i] != screen_width) || (heights[i] != screen_height) ) )
+            if ( (widths[i] <= max_width) && (heights[i] <= max_height) )
             {
-                /* only add them if they are smaller than the root window and unique */
-                X11DRV_Settings_AddOneMode(widths[i], heights[i], 0, 0);
+                if ( ( (widths[i] != max_width) || (heights[i] != max_height) ) &&
+                     ( (widths[i] != screen_width) || (heights[i] != screen_height) ) )
+                {
+                    /* only add them if they are smaller than the root window and unique */
+                    X11DRV_Settings_AddOneMode(widths[i], heights[i], 0, refresh_rate);
+                }
             }
         }
-    }
-    if ((max_width != screen_width) && (max_height != screen_height))
-    {
-        /* root window size (if different from desktop window) */
-        X11DRV_Settings_AddOneMode(max_width, max_height, 0, 0);
+        if ((max_width != screen_width) && (max_height != screen_height))
+        {
+            /* root window size (if different from desktop window) */
+            X11DRV_Settings_AddOneMode(max_width, max_height, 0, refresh_rate);
+        }
     }
 }
 
@@ -142,13 +150,28 @@ void X11DRV_init_desktop( Window win, unsigned int width, unsigned int height )
     screen_width  = width;
     screen_height = height;
     xinerama_init();
+    HKEY hkey;
+    char buffer[64] = "60\0";
+    char buffer_copy[64];
+    int refresh_count = 0;
+    char *elem, *bufferp = buffer_copy;
+
+    /* @@ Wine registry key: HKCU\Software\Wine\X11 Driver */
+    if ( !RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\X11 Driver", &hkey ) ) {
+        DWORD count = sizeof(buffer);
+        RegQueryValueExA(hkey, "FakeRefreshRate", 0, NULL, (LPBYTE)buffer, &count);
+        RegCloseKey(hkey);
+    }
+    strcpy(buffer_copy, buffer);
+    for(; ( elem = strsep(&bufferp, ",") ) && *elem && 0 <= strtol(elem , NULL, 0); )
+        refresh_count++;
 
     /* initialize the available resolutions */
     dd_modes = X11DRV_Settings_SetHandlers("desktop", 
                                            X11DRV_desktop_GetCurrentMode, 
                                            X11DRV_desktop_SetCurrentMode, 
-                                           NUM_DESKTOP_MODES+2, 1);
-    make_modes();
+                                           (NUM_DESKTOP_MODES+2)*refresh_count, 1);
+    make_modes(buffer);
     X11DRV_Settings_AddDepthModes();
     dd_mode_count = X11DRV_Settings_GetModeCount();
     X11DRV_Settings_SetDefaultMode(0);