http://slackware.bholcomb.com/slackware/slackware-11.0/source/xap/xscreensaver/xscree...
[xscreensaver] / hacks / xsublim.c
index 1dbc754d56a2f70ce931b050f71b0c67add92001..60d4ce69abbaf9b0fa4250bb3783bc023e99d6a0 100644 (file)
 #include "usleep.h"
 #include "yarandom.h"
 #include "resources.h"
+#include "vroot.h"
 
 
 /* Globals *******************************************************************/
 char*        progname;
-XtAppContext app;
-XrmDatabase  db;
 char*        progclass = XSUBLIM_NAME;
-char*        defaults[] =
+
+# ifdef __GNUC__
+  __extension__   /* don't warn about "string length is greater than the
+                     length ISO C89 compilers are required to support"
+                     in the following string constant... */
+# endif
+
+static char*        defaults[] =
 {
        ".background:                     #000000",
        ".foreground:                     #FFFFFF",
@@ -172,7 +178,8 @@ char*        defaults[] =
        "*" XSUBLIM_ARG_CENTER":          true",
        NULL
 };
-XrmOptionDescRec options[] =
+
+static XrmOptionDescRec options[] =
 {
        {"-" XSUBLIM_ARG_FONT,          "." XSUBLIM_ARG_FONT,
         XrmoptionSepArg,0},
@@ -215,7 +222,7 @@ static int Xsublim_Sig_Last;
 /* Functions *****************************************************************/
 
 /* Defer signals to protect the server grab ================================ */
-void xsublim_Sig_Catch(int sig_Number)
+static void xsublim_Sig_Catch(int sig_Number)
 {
        /* BSD needs this reset each time, and it shouldn't hurt anything
           else */
@@ -223,120 +230,16 @@ void xsublim_Sig_Catch(int sig_Number)
        Xsublim_Sig_Last = sig_Number;
 }
 
-/* Get the screensaver's window ============================================ */
-static XErrorHandler Xsublim_Ss_Handler = NULL;
-static int           Xsublim_Ss_Status;
-
 /* This was all basically swiped from driver/remote.c and util/vroot.h */
-static int xsublim_Ss_Handler(Display* handle_Display,
-            XErrorEvent* handle_Error)
-{
-       if (handle_Error->error_code == BadWindow)
-       {
-               Xsublim_Ss_Status = BadWindow;
-               return 0;
-       }
-       if (Xsublim_Ss_Handler == NULL)
-       {
-               fprintf(stderr,"%x: ",progname);
-               abort();
-       }
-       return (*Xsublim_Ss_Handler)(handle_Display,handle_Error);
-}
 static Window xsublim_Ss_GetWindow(Display* ss_Display)
 {
-       Window        win_Root;
-       Window        win_RootReturn;
-       Window        win_Parent;
-       Window*       win_Child;
-       Window        win_Win;
-       int           child_Count;
-       int           child_Index;
-       Atom          prop_Type;
-       int           prop_Format;
-       unsigned long prop_Count;
-       unsigned long prop_Bytes;
-       char*         prop_Value;
-       int           prop_Status;
-       static Atom   XA_SCREENSAVER_VERSION = -1;
-       static Atom   __SWM_VROOT;
-
-       /* Assume bad things */
-       win_Win = 0;
-       win_Child = NULL;
-
-       /* Find the atoms */
-       if (XA_SCREENSAVER_VERSION == -1)
-       {
-               XA_SCREENSAVER_VERSION = XInternAtom(ss_Display,
-                "_SCREENSAVER_VERSION",FALSE);
-               __SWM_VROOT = XInternAtom(ss_Display,"__SWM_VROOT",FALSE);
-       }
-
-       /* Find a screensaver window */
-       win_Root = RootWindowOfScreen(DefaultScreenOfDisplay(ss_Display));
-       if (XQueryTree(ss_Display,win_Root,&win_RootReturn,&win_Parent,
-        &win_Child,&child_Count) != FALSE)
-       {
-               if (
-                (win_Root == win_RootReturn) &&
-                (win_Parent == 0) &&
-                (win_Child != NULL) &&
-                (child_Count > 0))
-               {
-                       for (child_Index = 0;child_Index < child_Count;
-                        child_Index++)
-                       {
-                               XSync(ss_Display,FALSE);
-                               Xsublim_Ss_Status = 0;
-                               Xsublim_Ss_Handler =
-                                XSetErrorHandler(xsublim_Ss_Handler);
-                               prop_Value = NULL;
-                               prop_Status = XGetWindowProperty(ss_Display,
-                                win_Child[child_Index],XA_SCREENSAVER_VERSION,
-                                0,200,FALSE,XA_STRING,&prop_Type,&prop_Format,
-                                &prop_Count,&prop_Bytes,
-                                (unsigned char**)&prop_Value);
-                               XSync(ss_Display,FALSE);
-                               XSetErrorHandler(Xsublim_Ss_Handler);
-                               if (prop_Value != NULL)
-                               {
-                                       XFree(prop_Value);
-                               }
-                               if (Xsublim_Ss_Status == BadWindow)
-                               {
-                                       prop_Status = BadWindow;
-                               }
-                               if ((prop_Status == Success) &&
-                                (prop_Type != None))
-                               {
-                                       /* See if it's a virtual root */
-                                       prop_Value = NULL;
-                                       prop_Status =
-                                        XGetWindowProperty(ss_Display,
-                                        win_Child[child_Index],__SWM_VROOT,0,
-                                        1,FALSE,XA_WINDOW,&prop_Type,
-                                        &prop_Format,&prop_Count,&prop_Bytes,
-                                        (unsigned char**)&prop_Value);
-                                       if (prop_Value != NULL)
-                                       {
-                                               XFree(prop_Value);
-                                       }
-                                       if ((prop_Status == Success) &&
-                                        (prop_Type != None))
-                                       {
-                                               win_Win =
-                                                win_Child[child_Index];
-                                       }
-                               }
-                       }
-               }
-       }
-       if (win_Child != NULL)
-       {
-               XFree(win_Child);
-       }
-       return win_Win;
+  Screen *s = DefaultScreenOfDisplay (ss_Display);
+  Window root = XRootWindowOfScreen (s);
+  Window vroot = VirtualRootWindowOfScreen (s);
+  if (root == vroot)
+    return 0;
+  else
+    return vroot;
 }
 
 /* Main ==================================================================== */
@@ -358,8 +261,11 @@ static int xsublim_Sh_Handler(Display* handle_Display,
        }
        return (*Xsublim_Sh_Handler)(handle_Display,handle_Error);
 }
+
+
 int main(int argc,char* argv[])
 {
+       XtAppContext app;
        int               sig_Number;
        int               sig_Signal[] =
        {
@@ -394,7 +300,7 @@ int main(int argc,char* argv[])
                -1
        };
        Widget            app_App;
-       Display*          disp_Display;
+       Display*          dpy;
        Window            win_Root;
        XWindowAttributes attr_Win;
        XGCValues         gc_ValFore;
@@ -515,23 +421,22 @@ int main(int argc,char* argv[])
             exit (-1);
           }
 
-       disp_Display = XtDisplay(app_App);
-       db = XtDatabase(disp_Display);
-       XtGetApplicationNameAndClass(disp_Display,&progname,&progclass);
+       dpy = XtDisplay(app_App);
+       XtGetApplicationNameAndClass(dpy,&progname,&progclass);
        win_Root = RootWindowOfScreen(XtScreen(app_App));
        XtDestroyWidget(app_App);
 
        /* Get the arguments */
-       arg_FlagCenter = get_boolean_resource(XSUBLIM_ARG_CENTER,"Boolean");
-       arg_FlagOutline = get_boolean_resource(XSUBLIM_ARG_OUTLINE,"Boolean");
-       arg_FlagScreensaver = get_boolean_resource(XSUBLIM_ARG_SCREENSAVER,
+       arg_FlagCenter = get_boolean_resource(dpy, XSUBLIM_ARG_CENTER,"Boolean");
+       arg_FlagOutline = get_boolean_resource(dpy, XSUBLIM_ARG_OUTLINE,"Boolean");
+       arg_FlagScreensaver = get_boolean_resource(dpy, XSUBLIM_ARG_SCREENSAVER,
         "Boolean");
-       arg_FlagRandom = get_boolean_resource(XSUBLIM_ARG_RANDOM,"Boolean");
-       arg_DelayShow = get_integer_resource(XSUBLIM_ARG_DELAYSHOW,"Integer");
-       arg_DelayWord = get_integer_resource(XSUBLIM_ARG_DELAYWORD,"Integer");
-       arg_DelayPhraseMin = get_integer_resource(XSUBLIM_ARG_DELAYPHRASEMIN,
+       arg_FlagRandom = get_boolean_resource(dpy, XSUBLIM_ARG_RANDOM,"Boolean");
+       arg_DelayShow = get_integer_resource(dpy, XSUBLIM_ARG_DELAYSHOW,"Integer");
+       arg_DelayWord = get_integer_resource(dpy, XSUBLIM_ARG_DELAYWORD,"Integer");
+       arg_DelayPhraseMin = get_integer_resource(dpy, XSUBLIM_ARG_DELAYPHRASEMIN,
         "Integer");
-       arg_DelayPhraseMax = get_integer_resource(XSUBLIM_ARG_DELAYPHRASEMAX,
+       arg_DelayPhraseMax = get_integer_resource(dpy, XSUBLIM_ARG_DELAYPHRASEMAX,
         "Integer");
        if (arg_DelayPhraseMax < arg_DelayPhraseMin)
        {
@@ -543,7 +448,7 @@ int main(int argc,char* argv[])
        text_Item = 0;
        text_Count = 0;
        memset(text_Used,0,sizeof(text_Used));
-       arg_Source = get_string_resource(XSUBLIM_ARG_FILE,"Filename");
+       arg_Source = get_string_resource(dpy, XSUBLIM_ARG_FILE,"Filename");
        if (arg_Source != NULL)
        {
                FILE*       file_Fs;
@@ -576,7 +481,7 @@ int main(int argc,char* argv[])
        }
        else
        {
-               arg_Source = get_string_resource(XSUBLIM_ARG_PROGRAM,
+               arg_Source = get_string_resource(dpy, XSUBLIM_ARG_PROGRAM,
                 "Executable");
                if (arg_Source != NULL)
                {
@@ -627,7 +532,7 @@ int main(int argc,char* argv[])
                else
                {
                        arg_Text =
-                        get_string_resource(XSUBLIM_ARG_PHRASES,"Phrases");
+                        get_string_resource(dpy, XSUBLIM_ARG_PHRASES,"Phrases");
                        if (arg_Text != NULL)
                        {
                                arg_Text = strdup(arg_Text);
@@ -652,12 +557,12 @@ int main(int argc,char* argv[])
        }
 
        /* Load the font */
-       font_Font = XLoadQueryFont(disp_Display,
-        get_string_resource(XSUBLIM_ARG_FONT,"Font"));
+       font_Font = XLoadQueryFont(dpy,
+        get_string_resource(dpy, XSUBLIM_ARG_FONT,"Font"));
        font_Index = 0;
        while ((font_Font == NULL) && (font_List[font_Index] != NULL))
        {
-               font_Font = XLoadQueryFont(disp_Display,font_List[font_Index]);
+               font_Font = XLoadQueryFont(dpy,font_List[font_Index]);
                font_Index++;
        }
        if (font_Font == NULL)
@@ -667,22 +572,26 @@ int main(int argc,char* argv[])
        }
 
        /* Create the GCs */
-       XGetWindowAttributes(disp_Display,win_Root,&attr_Win);
+       XGetWindowAttributes(dpy,win_Root,&attr_Win);
        gc_ValFore.font = font_Font->fid;
-       gc_ValFore.foreground = get_pixel_resource("foreground","Foreground",
-        disp_Display,attr_Win.colormap);
-       gc_ValFore.background = get_pixel_resource("background","Background",
-        disp_Display,attr_Win.colormap);
+       gc_ValFore.foreground = get_pixel_resource(dpy,
+                                                   attr_Win.colormap,
+                                                   "foreground","Foreground");
+       gc_ValFore.background = get_pixel_resource(dpy,
+                                                   attr_Win.colormap,
+                                                   "background","Background");
        gc_ValFore.subwindow_mode = IncludeInferiors;
-       gc_GcFore = XCreateGC(disp_Display,win_Root,
+       gc_GcFore = XCreateGC(dpy,win_Root,
         (GCFont|GCForeground|GCBackground|GCSubwindowMode),&gc_ValFore);
        gc_ValBack.font = font_Font->fid;
-       gc_ValBack.foreground = get_pixel_resource("background","Background",
-        disp_Display,attr_Win.colormap);
-       gc_ValBack.background = get_pixel_resource("foreground","Foreground",
-        disp_Display,attr_Win.colormap);
+       gc_ValBack.foreground = get_pixel_resource(dpy,
+                                                   attr_Win.colormap,
+                                                   "background","Background");
+       gc_ValBack.background = get_pixel_resource(dpy,
+                                                   attr_Win.colormap,
+                                                   "foreground","Foreground");
        gc_ValBack.subwindow_mode = IncludeInferiors;
-       gc_GcBack = XCreateGC(disp_Display,win_Root,
+       gc_GcBack = XCreateGC(dpy,win_Root,
         (GCFont|GCForeground|GCBackground|GCSubwindowMode),&gc_ValBack);
 
        /* Loop ------------------------------------------------------------ */
@@ -694,7 +603,7 @@ int main(int argc,char* argv[])
                if (arg_FlagScreensaver != FALSE)
                {
                        /* Find the screensaver's window */
-                       win_Root = xsublim_Ss_GetWindow(disp_Display);
+                       win_Root = xsublim_Ss_GetWindow(dpy);
                        if (win_Root == 0)
                        {
                                usleep(30000000);
@@ -736,7 +645,7 @@ int main(int argc,char* argv[])
                        /* Once-per-word stuff ----------------------------- */
 
                        /* Find the text's position */
-                       XGetWindowAttributes(disp_Display,win_Root,&attr_Win);
+                       XGetWindowAttributes(dpy,win_Root,&attr_Win);
                        text_Length = strlen(text_Word);
                        text_Width = XTextWidth(font_Font,text_Word,
                         text_Length)+XSUBLIM_TEXT_OUTLINE*2;
@@ -782,9 +691,9 @@ int main(int argc,char* argv[])
 
                        /* Grab the server -- we can't let anybody draw over
                           us */
-                       XSync(disp_Display,FALSE);
-                       XGrabServer(disp_Display);
-                       XSync(disp_Display,FALSE);
+                       XSync(dpy,FALSE);
+                       XGrabServer(dpy);
+                       XSync(dpy,FALSE);
 
                        /* Set up an error handler that ignores BadMatches --
                           since the screensaver can take its window away at
@@ -794,7 +703,7 @@ int main(int argc,char* argv[])
                         XSetErrorHandler(xsublim_Sh_Handler);
 
                        /* Save the current background */
-                       image_Image = XGetImage(disp_Display,win_Root,image_X,
+                       image_Image = XGetImage(dpy,win_Root,image_X,
                         image_Y,image_Width,image_Height,~0L,ZPixmap);
 
                        /* If we've successfully saved the background... */
@@ -817,7 +726,7 @@ int main(int argc,char* argv[])
                                                           annoying at some
                                                           point... */
                                                        XDrawString(
-                                                        disp_Display,
+                                                        dpy,
                                                         win_Root,gc_GcBack,
                                                         text_X+text_Outline[
                                                         text_OutlineIndex].
@@ -835,7 +744,7 @@ int main(int argc,char* argv[])
                                        }
 
                                        /* Draw the word */
-                                       XDrawString(disp_Display,win_Root,
+                                       XDrawString(dpy,win_Root,
                                         gc_GcFore,text_X,
                                         text_Y+(font_Font->ascent),text_Word,
                                         text_Length);
@@ -843,14 +752,14 @@ int main(int argc,char* argv[])
                                if (Xsublim_Sh_Status == 0)
                                {
                                        /* Wait a bit */
-                                       XSync(disp_Display,FALSE);
+                                       XSync(dpy,FALSE);
                                        if (Xsublim_Sig_Last == -1)
                                        {
                                                usleep(arg_DelayShow);
                                        }
        
                                        /* Restore the background */
-                                       XPutImage(disp_Display,win_Root,
+                                       XPutImage(dpy,win_Root,
                                         gc_GcFore,image_Image,0,0,image_X,
                                         image_Y,image_Width,image_Height);
                                }
@@ -860,10 +769,10 @@ int main(int argc,char* argv[])
                        }
 
                        /* Restore the error handler, ungrab the server */
-                        XSync(disp_Display,FALSE);
+                        XSync(dpy,FALSE);
                        XSetErrorHandler(Xsublim_Sh_Handler);
-                       XUngrabServer(disp_Display);
-                        XSync(disp_Display,FALSE);
+                       XUngrabServer(dpy);
+                        XSync(dpy,FALSE);
 
                        /* Pause between words */
                        if (Xsublim_Sig_Last == -1)