Initial revision

1999-12-09 23:15:14 +00:00
commit 2635c3085d
139 changed files with 24298 additions and 0 deletions
@@ -0,0 +1,171 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "../shared/debug.h"
+
+#include "drivers/lcd.h"
+
+#include "clients.h"
+#include "client_data.h"
+#include "widget.h"
+#include "screenlist.h"
+#include "screen.h"
+
+
+screen * screen_create()
+{
+   screen *s;
+
+   s = malloc(sizeof(screen));
+   if(!s)
+   {
+      fprintf(stderr, "screen_create: Error allocating new screen\n");
+      return NULL;
+   }
+
+   s->id=NULL;
+   s->name=NULL;
+   s->priority=128;
+   // TODO: Make the screen duration configurable!
+   s->duration = 32;
+   s->heartbeat = 1;
+   s->wid = lcd.wid;
+   s->hgt = lcd.hgt;
+   s->parent = NULL;
+   s->widgets=NULL;
+
+   s->widgets = LL_new();
+   if(!s->widgets)
+   {
+      fprintf(stderr, "screen_create:  Error allocating widget list\n");
+      return NULL;
+   }
+
+   return s;
+}
+
+int screen_destroy(screen *s)
+{
+   widget *w;
+
+   if(!s) return -1;
+   
+   LL_Rewind(s->widgets);
+   do {
+      // Free a widget...
+      w = LL_Get(s->widgets);
+      widget_destroy(w);
+   } while (LL_Next(s->widgets) == 0);
+   LL_Destroy(s->widgets);
+
+
+   if(s->id)
+      free(s->id);
+   if(s->name)
+      free(s->name);
+   
+   free(s);
+   
+   return 0;
+}
+
+
+screen *screen_find(client *c, char *id)
+{
+   screen *s;
+
+   if(!c) return NULL;
+   if(!id) return NULL;
+
+   debug("client_find_screen(%s)\n", id);
+   
+   LL_Rewind(c->data->screenlist);
+   do {
+      s = LL_Get(c->data->screenlist);
+      if( (s)  &&  (0 == strcmp(s->id, id)))
+      {
+	 debug("client_find_screen:  Found %s\n", id);
+	 return s;
+      }
+   } while(LL_Next(c->data->screenlist) == 0);
+
+   return NULL;
+}
+
+
+int screen_add(client *c, char *id)
+{
+   screen *s;
+
+   if(!c) return -1;
+   if(!id) return -1;
+
+   // Make sure this screen doesn't already exist...
+   s = screen_find(c, id);
+   if(s)
+   {
+      return 1;
+   }
+   
+   s = screen_create();
+   if(!s)
+   {
+      fprintf(stderr, "screen_add:  Error creating screen\n");
+      return -1;
+   }
+
+   s->parent = c;
+
+   s->id = strdup(id);
+   if(!s->id)
+   {
+      fprintf(stderr, "screen_add:  Error allocating name\n");
+      return -1;
+   }
+
+   // TODO:  Check for errors here?
+   LL_Push(c->data->screenlist, (void *)s);
+   
+
+   // Now, add it to the screenlist...
+   if(screenlist_add(s) < 0)
+   {
+      fprintf(stderr, "screen_add:  Error queueing new screen\n");
+      return -1;
+   }
+   
+   return 0;
+}
+
+int screen_remove(client *c, char *id)
+{
+   screen *s;
+
+   if(!c) return -1;
+   if(!id) return -1;
+   
+   // Make sure this screen *does* exist...
+   s = screen_find(c, id);
+   if(!s)
+   {
+      fprintf(stderr, "screen_remove:  Error finding screen %s\n", id);
+      return 1;
+   }
+
+   // TODO:  Check for errors here?
+   LL_Remove(c->data->screenlist, (void *)s);
+
+   // ... and here?
+   screen_destroy(s);
+
+   // Now, remove it from the screenlist...
+   if(screenlist_remove_all(s) < 0)
+   {
+      // Not a serious error..
+      fprintf(stderr, "screen_remove:  Error dequeueing screen\n");
+      return 0;
+   }
+   
+   return 0;
+}