Fixed the "three-valued boolean" bug

ChangeLog

@@ -1,3 +1,8 @@
+2007-01-20  Mattias Ellert <mattias.ellert@tsl.uu.se>
+
+	* backend/canon.c, backend/canon-sane.c:
+	  Fixed the "three-valued boolean" bug
+
 2007-01-20  Alessandro Zummo <a.zummo@towertech.it>
 
 	* sanei/sanei_tcp.c: added a missing include

backend/canon-sane.c

@@ -371,8 +371,6 @@ sane_control_option (SANE_Handle handle, SANE_Int option,
 	  *(SANE_Word *) val = s->val[option].w;
 	  DBG (21, "value for option %s: %d\n", option_name[option],
 	       s->val[option].w);
-	  if (info)
-	    *info |= SANE_INFO_RELOAD_PARAMS;
 	  return (SANE_STATUS_GOOD);
 
 	case OPT_GAMMA_VECTOR:
@@ -435,33 +433,10 @@ sane_control_option (SANE_Handle handle, SANE_Int option,
 	case OPT_TPU_DCM:
 	case OPT_TPU_FILMTYPE:
 	case OPT_MODE:
-	  strcpy (val, s->val[option].s);
-	  if (info)
-	    *info |= SANE_INFO_RELOAD_PARAMS;
-	  DBG (21, "value for option %s: %s\n", option_name[option],
-	       s->val[option].s);
-	  return (SANE_STATUS_GOOD);
-
 	case OPT_NEGATIVE:
-	  strcpy (val, s->val[option].s);
-	  if (info)
-	    *info |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
-	  DBG (21, "value for option %s: %s\n", option_name[option],
-	       s->val[option].s);
-	  return (SANE_STATUS_GOOD);
-
 	case OPT_NEGATIVE_TYPE:
-	  strcpy (val, s->val[option].s);
-	  if (info)
-	    *info |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
-	  DBG (21, "value for option %s: %s\n", option_name[option],
-	       s->val[option].s);
-	  return (SANE_STATUS_GOOD);
-
 	case OPT_SCANNING_SPEED:
 	  strcpy (val, s->val[option].s);
-	  if (info)
-	    *info |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
 	  DBG (21, "value for option %s: %s\n", option_name[option],
 	       s->val[option].s);
 	  return (SANE_STATUS_GOOD);
@@ -663,16 +638,14 @@ sane_control_option (SANE_Handle handle, SANE_Int option,
 	      s->hw->adf.Priority |= 0x03;	/* flatbed mode */
 	      s->hw->adf.Feeder &= 0x00;	/* autofeed off (default) */
 	      s->hw->adf.Status = ADF_STAT_DISABLED;
-	      s->val[option].w = SANE_TRUE;
 	    }		/* if it isn't connected, don't bother fixing */
 	  return SANE_STATUS_GOOD;
 
 	case OPT_TPU_ON:
-	  if (s->val[OPT_TPU_ON].w == TPU_STAT_INACTIVE)	/* switch on */
+	  s->val[option].w = *(SANE_Word *) val;
+	  if (s->val[option].w)			/* switch on */
 	    {
-	      s->val[OPT_TPU_ON].w = TPU_STAT_ACTIVE;
+	      s->hw->tpu.Status = TPU_STAT_ACTIVE;
-	      s->opt[OPT_TPU_ON].title = SANE_I18N("Turn off the transparency "
-	      "unit");
 	      s->opt[OPT_TPU_TRANSPARENCY].cap &=
 		(s->hw->tpu.ControlMode == 3) ? ~SANE_CAP_INACTIVE : ~0;
 	      s->opt[OPT_TPU_FILMTYPE].cap &=
@@ -680,9 +653,7 @@ sane_control_option (SANE_Handle handle, SANE_Int option,
 	    }
 	  else			/* switch off */
 	    {
-	      s->val[OPT_TPU_ON].w = TPU_STAT_INACTIVE;
+	      s->hw->tpu.Status = TPU_STAT_INACTIVE;
-	      s->opt[OPT_TPU_ON].title = SANE_I18N("Turn on the transparency "
-	      "unit");
 	      s->opt[OPT_TPU_TRANSPARENCY].cap |= SANE_CAP_INACTIVE;
 	      s->opt[OPT_TPU_FILMTYPE].cap |= SANE_CAP_INACTIVE;
 	    }
@@ -1186,7 +1157,7 @@ sane_start (SANE_Handle handle)
 
   s->scanning = SANE_FALSE;
 
-  if ((s->hw->adf.Status == SANE_TRUE)
+  if ((s->hw->adf.Status != ADF_STAT_NONE)
       && (s->val[OPT_FLATBED_ONLY].w != SANE_TRUE)
       && (s->hw->adf.Problem != 0))
     {
@@ -1208,7 +1179,7 @@ sane_start (SANE_Handle handle)
 	}
       return status;
     }
-  else if ((s->hw->adf.Status == SANE_TRUE)
+  else if ((s->hw->adf.Status != ADF_STAT_NONE)
 	   && (s->val[OPT_FLATBED_ONLY].w == SANE_TRUE))
     {
       set_adf_mode (s->fd, s->hw->adf.Priority);

backend/canon.c

@@ -244,7 +244,7 @@ get_tpu_stat (int fd, CANON_Device * dev)
     DBG (3, "scan mode control byte[%d] = %d\n", (int) i, tbuf[i]);
   dev->tpu.Status = (tbuf[2 + 4 + 5] >> 7) ?
     TPU_STAT_INACTIVE : TPU_STAT_NONE;
-  if (dev->tpu.Status == SANE_TRUE)	/* TPU available */
+  if (dev->tpu.Status != TPU_STAT_NONE)	/* TPU available */
     {
       dev->tpu.Status = (tbuf[2 + 4 + 5] && 0x04) ?
 	TPU_STAT_INACTIVE : TPU_STAT_ACTIVE;
@@ -291,7 +291,7 @@ get_adf_stat (int fd, CANON_Device * dev)
   dev->adf.Status = (abuf[ADF_Status] & ADF_NOT_PRESENT) ?
     ADF_STAT_NONE : ADF_STAT_INACTIVE;
 
-  if (dev->adf.Status == SANE_TRUE)	/* ADF available / INACTIVE */
+  if (dev->adf.Status != ADF_STAT_NONE)	/* ADF available / INACTIVE */
     {
       dev->adf.Status = (abuf[ADF_Status] & ADF_PROBLEM) ?
 	ADF_STAT_INACTIVE : ADF_STAT_ACTIVE;
@@ -1706,14 +1706,13 @@ init_options (CANON_Scanner * s)
 
   /* Transparency Unit (FAU, Film Adapter Unit) */
   s->opt[OPT_TPU_ON].name = "transparency-unit-on-off";
-  s->opt[OPT_TPU_ON].title = (s->hw->tpu.Status == TPU_STAT_ACTIVE)
+  s->opt[OPT_TPU_ON].title = SANE_I18N("Transparency unit");
-  ?  SANE_I18N("Turn off the transparency unit")
-  : SANE_I18N("Turn on the transparency unit");
   s->opt[OPT_TPU_ON].desc = SANE_I18N("Switch on/off the transparency unit "
   "(FAU, film adapter unit)");
   s->opt[OPT_TPU_ON].type = SANE_TYPE_BOOL;
   s->opt[OPT_TPU_ON].unit = SANE_UNIT_NONE;
-  s->val[OPT_TPU_ON].w = s->hw->tpu.Status;
+  s->val[OPT_TPU_ON].w =
+    (s->hw->tpu.Status == TPU_STAT_ACTIVE) ? SANE_TRUE : SANE_FALSE;
   s->opt[OPT_TPU_ON].cap |=
     (s->hw->tpu.Status != TPU_STAT_NONE) ? 0 : SANE_CAP_INACTIVE;