From 628af986c97dbf2347859008a247e174c18bd7fa Mon Sep 17 00:00:00 2001
From: lecoanet
Date: Wed, 27 Sep 2000 14:34:38 +0000
Subject: Ajout de deux attributs permettant de diff�rentier la couleur des
 positions pass�es de celle de la position courante. Il s'agit de
 -historycolor et de -lastasfirst.

---
 generic/Track.c | 31 +++++++++++++++++++++++--------
 1 file changed, 23 insertions(+), 8 deletions(-)

diff --git a/generic/Track.c b/generic/Track.c
index 94855d4..69121b8 100644
--- a/generic/Track.c
+++ b/generic/Track.c
@@ -51,6 +51,7 @@ static const char compile_id[]="$Compile: " __FILE__ " " __DATE__ " " __TIME__ "
 #define CIRCLE_HISTORY_BIT		1 << 3
 #define POLAR_BIT			1 << 5
 #define FROZEN_LABEL_BIT		1 << 6
+#define LAST_AS_FIRST_BIT		1 << 7
 
 #define CURRENT_POSITION	-2
 #define LEADER			-3
@@ -102,6 +103,7 @@ typedef struct _TrackItemStruct {
   int			visible_history_size;	/* Number of visible positions	*/
   ZnPoint		pos;			/* item world coordinates	*/
   ZnPoint		speed_vector;		/* s. v. slope in world coord	*/
+  ZnColor		history_color;
 
   /* Private data */
   FieldSetStruct	field_set;
@@ -140,6 +142,8 @@ static ZnAttrConfig	track_attrs[] = {
     Tk_Offset(TrackItemStruct, flags), MARKER_FILLED_BIT, ZN_DRAW_FLAG, False },
   { ZN_CONFIG_BOOL, "-frozenlabel", NULL,
     Tk_Offset(TrackItemStruct, flags), FROZEN_LABEL_BIT, ZN_COORDS_FLAG, False },
+  { ZN_CONFIG_COLOR, "-historycolor", NULL,
+    Tk_Offset(TrackItemStruct, history_color), 0, ZN_DRAW_FLAG, False },
   { ZN_CONFIG_ANCHOR, "-labelanchor", NULL,
     Tk_Offset(TrackItemStruct, label_anchor), 0, ZN_COORDS_FLAG, False },
   { ZN_CONFIG_ANGLE, "-labelangle", NULL,
@@ -157,6 +161,8 @@ static ZnAttrConfig	track_attrs[] = {
   { ZN_CONFIG_LABEL_FORMAT, "-labelformat", NULL,
     Tk_Offset(TrackItemStruct, field_set.label_format), 0,
     ZN_COORDS_FLAG|ZN_CLFC_FLAG, False },
+  { ZN_CONFIG_BOOL, "-lastasfirst", NULL,
+    Tk_Offset(TrackItemStruct, flags), LAST_AS_FIRST_BIT, ZN_DRAW_FLAG, False },
   { ZN_CONFIG_LEADER_ANCHORS, "-leaderanchors", NULL,
     Tk_Offset(TrackItemStruct, leader_anchors), 0, ZN_COORDS_FLAG, False },
   { ZN_CONFIG_COLOR, "-leadercolor", NULL,
@@ -353,11 +359,13 @@ Init(Item		item,
   track->marker_style = LINE_SIMPLE;
   track->marker_fill_pattern = ZnUnspecifiedPattern;
   track->speed_vector_color = ZnGetColorByValue(wi->win, wi->fore_color);
+  track->history_color = ZnGetColorByValue(wi->win, wi->fore_color);
   CLEAR(track->flags, MARKER_FILLED_BIT);
   SET(track->flags, FILLED_HISTORY_BIT);
   CLEAR(track->flags, DOT_MIXED_HISTORY_BIT);
   CLEAR(track->flags, CIRCLE_HISTORY_BIT);
-
+  CLEAR(track->flags, LAST_AS_FIRST_BIT);
+  
   if (item->class == ZnTrack) {
     item->priority = DEFAULT_TRACK_PRIORITY;
     track->visible_history_size = DEFAULT_VISIBLE_HISTORY_SIZE;
@@ -448,6 +456,7 @@ Clone(Item	item)
   track->connection_color = ZnGetColorByValue(wi->win, track->connection_color);
   track->marker_color = ZnGetColorByValue(wi->win, track->marker_color);
   track->speed_vector_color = ZnGetColorByValue(wi->win, track->speed_vector_color);
+  track->history_color = ZnGetColorByValue(wi->win, track->history_color);
   if (track->symbol != ZnUnspecifiedPattern) {
     track->symbol = Tk_GetBitmap(wi->interp, wi->win,
 				 Tk_NameOfBitmap(wi->dpy, track->symbol));
@@ -494,6 +503,7 @@ Destroy(Item	item)
   ZnFreeColor(track->connection_color);
   ZnFreeColor(track->marker_color);
   ZnFreeColor(track->speed_vector_color);
+  ZnFreeColor(track->history_color);
   if (track->symbol != ZnUnspecifiedPattern) {
     Tk_FreeBitmap(wi->dpy, track->symbol);
   }
@@ -1117,9 +1127,6 @@ Draw(Item	item)
   }
   
   tmp_str[0] = track->symbol;
-  values.foreground = ZnPixel(track->symbol_color);
-  values.fill_style = FillSolid;
-  XChangeGC(wi->dpy, wi->gc, GCForeground|GCFillStyle, &values);  
   if (track->symbol != ZnUnspecifiedPattern) {
     Tk_SizeOfBitmap(wi->dpy, track->symbol, &width, &height);
   }
@@ -1128,16 +1135,22 @@ Draw(Item	item)
    * Draw the history, current pos excepted.
    */
   if ((item->class == ZnTrack) && track->history) {
+    values.foreground = ZnPixel(track->history_color);
+    values.fill_style = FillSolid;
+    XChangeGC(wi->dpy, wi->gc, GCForeground|GCFillStyle, &values);  
     if (ISCLEAR(track->flags, FILLED_HISTORY_BIT)) {
       values.line_width = 0;
       values.line_style = LineSolid;
       XChangeGC(wi->dpy, wi->gc, GCLineWidth | GCLineStyle, &values);
     }
-    num_acc_pos = ZnListSize(track->history);
+    num_acc_pos = MIN(track->visible_history_size, ZnListSize(track->history));
     hist = ZnListArray(track->history);
     side_size = MAX(width, height);
-    for (i = 0, nb_hist = 0;
-	 i < MIN(track->visible_history_size, num_acc_pos); i++) {
+    for (i = 0, nb_hist = 0; i < num_acc_pos; i++) {
+      if (ISSET(track->flags, LAST_AS_FIRST_BIT) && (i == num_acc_pos-1)) {
+	values.foreground = ZnPixel(track->symbol_color);
+	XChangeGC(wi->dpy, wi->gc, GCForeground, &values);
+      }
       side_size--;
       side_size = MAX(1, side_size);
       h_side_size = (side_size+1)/2;
@@ -1181,12 +1194,14 @@ Draw(Item	item)
   if (track->symbol != ZnUnspecifiedPattern) {
     int x = track->dev.x - (width+1)/2;
     int y = track->dev.y - (height+1)/2;
+    values.foreground = ZnPixel(track->symbol_color);
     values.fill_style = FillStippled;
     values.stipple = track->symbol;
     values.ts_x_origin = x;
     values.ts_y_origin = y;
     XChangeGC(wi->dpy, wi->gc,
-	      GCFillStyle|GCStipple|GCTileStipXOrigin|GCTileStipYOrigin, &values);
+	      GCForeground|GCFillStyle|GCStipple|GCTileStipXOrigin|GCTileStipYOrigin,
+	      &values);
     XFillRectangle(wi->dpy, wi->draw_buffer, wi->gc, x, y, width, height);
   }
 
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