From 30c98eb53adbb4c33d8cbbc9c69e5404ae80f92a Mon Sep 17 00:00:00 2001
From: Kaj-Michael Lang <milang@tal.org>
Date: Tue, 5 Aug 2008 17:59:39 +0300
Subject: [PATCH] Misc

---
 libs/libgtkmap/gtkmap.c | 16 ++++++++++------
 libs/libgtkmap/path.c   | 24 ++++++++++++++++++++++--
 libs/libgtkmap/path.h   |  3 ---
 3 files changed, 32 insertions(+), 11 deletions(-)

diff --git a/libs/libgtkmap/gtkmap.c b/libs/libgtkmap/gtkmap.c
index e0190b3..1fa1e7a 100644
--- a/libs/libgtkmap/gtkmap.c
+++ b/libs/libgtkmap/gtkmap.c
@@ -1108,6 +1108,7 @@ if (path->head==path->tail)
 
 map=GTK_MAP(widget);
 priv=GTK_MAP_GET_PRIVATE(map);
+
 prev=path->head;
 x1=unit2x(path->head->unitx);
 y1=unit2y(path->head->unity);
@@ -1126,18 +1127,21 @@ switch (path->type) {
 	break;
 }
 cairo_set_line_width(priv->ct, priv->draw_width);
-#if 0
 cairo_rectangle(priv->ct, event->area.x, event->area.y, event->area.width, event->area.height);
 cairo_clip(priv->ct);
-#endif
-cairo_move_to(priv->ct, x1, y1);
+#if 0
 if (priv->rotate_view) {
-	gtk_map_update_rotation_matrix(priv,unit2x(priv->center.unitx),unit2y(priv->center.unity) );
+	gtk_map_update_rotation_matrix(priv, unit2x(priv->center.unitx), unit2y(priv->center.unity));
 	cairo_set_matrix(priv->ct, &priv->matrix_rotate);
 }
 #endif
+cairo_move_to(priv->ct, x1, y1);
+#endif
 
 for (curr=path->head, wcurr=path->whead; curr++!=path->tail;) {
+	if (!curr->unitx)
+		continue;
+
 	x2=unit2x(curr->unitx);
 	y2=unit2y(curr->unity);
 
@@ -1151,8 +1155,6 @@ for (curr=path->head, wcurr=path->whead; curr++!=path->tail;) {
 			cairo_line_to(priv->ct, x2, y2);
 #else
 			gdk_draw_line(widget->window, priv->gc_track, x1, y1, x2, y2);
-			x1=x2;
-			y1=y2;
 #endif
 		}
 	}
@@ -1169,6 +1171,8 @@ for (curr=path->head, wcurr=path->whead; curr++!=path->tail;) {
 		wcurr++;
 	}
 	prev=curr;
+	x1=x2;
+	y1=y2;
 }
 #if 0
 if (path->type==PATH_TYPE_ROUTE)
diff --git a/libs/libgtkmap/path.c b/libs/libgtkmap/path.c
index ad96d82..ef89c07 100644
--- a/libs/libgtkmap/path.c
+++ b/libs/libgtkmap/path.c
@@ -53,6 +53,9 @@ struct sql_select_stmt {
 };
 static struct sql_select_stmt sql;
 
+/* Null point */
+Point point_null;
+
 #define PATH_TABLE_PATHS "create table IF NOT EXISTS paths ( \
 	nid		int primary key, \
 	name 	text not null, \
@@ -81,7 +84,7 @@ static struct sql_select_stmt sql;
 
 #define MACRO_PATH_INIT(path) { \
 	(path).head = (path).tail = g_new0(Point, ARRAY_CHUNK_SIZE); \
-	*((path).tail) = _point_null; \
+	*((path).tail) = point_null; \
 	(path).cap = (path).head + ARRAY_CHUNK_SIZE; \
 	(path).whead = g_new0(WayPoint, ARRAY_CHUNK_SIZE); \
 	(path).wtail = (path).whead; \
@@ -201,6 +204,8 @@ object_class->dispose=path_dispose;
 object_class->finalize=path_finalize;
 /* g_type_class_add_private (klass, sizeof(PathPrivate)); */
 
+memset(&point_null, 0, sizeof(point_null));
+
 signals[NEW_POINT]=g_signal_new("new-point", G_OBJECT_CLASS_TYPE(object_class),
 	G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET(PathClass, new_point),
 	NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, NULL);
@@ -361,6 +366,18 @@ guint unitx, unity;
 
 latlon2unit(lat, lon, &unitx, &unity);
 
+/* Initial point */
+if (path->head==path->tail) {
+	MACRO_PATH_INCREMENT_TAIL(*path);
+	path->tail->unitx=unitx;
+	path->tail->unity=unity;
+	path->tail->time=ptime;
+	path->tail->altitude=altitude;
+	path->speed=speed;
+	path->points=1;
+	return TRUE;
+}
+
 if (abs((gint)unitx-path->tail->unitx) > path->sensitivity || abs((gint)unity-path->tail->unity) > path->sensitivity) {
 	if (path->tail->unity && path->tail->unitx) {
 		gdouble plat, plon;
@@ -403,12 +420,15 @@ path_add_break(Path *path)
 g_return_val_if_fail(path, FALSE);
 g_return_val_if_fail(path->tail, FALSE);
 
+if (path->head==path->tail)
+	return FALSE;
+
 if (path->tail->unity && path->tail->unitx) {
 	/* To mark a "break" in a track, we'll add a (0, 0) point and then 
 	   another instance of the most recent track point. */
 
 	MACRO_PATH_INCREMENT_TAIL(*path);
-	*path->tail=_point_null;
+	*path->tail=point_null;
 	MACRO_PATH_INCREMENT_TAIL(*path);
 	*path->tail=path->tail[-2];
 
diff --git a/libs/libgtkmap/path.h b/libs/libgtkmap/path.h
index b37ce24..348b0ed 100644
--- a/libs/libgtkmap/path.h
+++ b/libs/libgtkmap/path.h
@@ -170,9 +170,6 @@ struct _PathClass {
 	void (*reached_waypoint) (Path *path);
 };
 
-/* Null point */
-Point _point_null;
-
 Path *path_new(PathType type, guint id);
 void path_free(Path *p);
 void path_clear(Path *p);
-- 
2.39.5