From 65cb55c7dbebf19ce094f4941d5bb67be4558a1f Mon Sep 17 00:00:00 2001
From: Kaj-Michael Lang <milang@angel.tal.org>
Date: Tue, 16 Oct 2007 13:52:39 +0300
Subject: [PATCH] Add goto location helpers. Cleanups.

---
 src/map.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 48 insertions(+), 8 deletions(-)

diff --git a/src/map.c b/src/map.c
index 47ce72c..9098a55 100644
--- a/src/map.c
+++ b/src/map.c
@@ -91,6 +91,8 @@ void map_force_redraw();
 static void map_update_location(gint x, gint y, gboolean force);
 void map_draw_position_icon(Position *pos);
 
+/******************************************************************************/
+
 gboolean 
 map_cb_configure(GtkWidget * widget, GdkEventConfigure * event)
 {
@@ -124,7 +126,7 @@ return TRUE;
  * _map_widget.  This method does not queue the draw area.
  */
 static void 
-map_draw_mark()
+map_draw_mark(void)
 {
 gdk_draw_arc(_map_widget->window, 
 	_conn_state == RCVR_FIXED ? _gc[COLORABLE_MARK] : _gc[COLORABLE_MARK_OLD], FALSE,
@@ -335,7 +337,7 @@ if(_show_tracks>0)
  * background maps from disk and redrawing the tracks on top of them.
  */
 void 
-map_force_redraw()
+map_force_redraw(void)
 {
 guint new_x, new_y;
 
@@ -496,6 +498,35 @@ if (_center_mode > 0)
 map_center_unit(_center.unitx + delta_unitx, _center.unity + delta_unity);
 }
 
+/**
+ * Helper to center map on given lat/lon
+ */
+map_center_latlon(gdouble lat, gdouble lon)
+{
+guint unitx, unity;
+
+latlon2unit(lat, lon, unitx, unity);
+map_center_unit(unitx, unity);
+}
+
+/**
+ * Helper to goto given point and update location
+ * 
+ */
+gboolean
+map_goto_position(Position *pos)
+{
+if (pos->valid==FALSE) {
+	return FALSE;
+}
+
+_center_mode=CENTER_MANUAL;
+map_center_latlon(pos->lat, pos->lon);
+map_set_autozoom(FALSE);
+map_update_location_from_center();
+return TRUE;
+}
+
 /**
  * Initiate a move of the mark from the old location to the current
  * location.  This function queues the draw area of the old mark (to force
@@ -518,14 +549,14 @@ gtk_widget_queue_draw_area(_map_widget,
 }
 
 gboolean
-map_update_location_from_gps()
+map_update_location_from_gps(void)
 {
 map_update_location(_pos.unitx, _pos.unity, FALSE);
 return FALSE;
 }
 
 gboolean
-map_update_location_from_center()
+map_update_location_from_center(void)
 {
 /* Force re-validation of place if user is clicking around */
 map_loc.valid=FALSE;
@@ -575,7 +606,7 @@ if (p) {
  * the view if the mark is appropriately close to the edge of the view.
  */
 void
-map_refresh_mark()
+map_refresh_mark(void)
 {
 guint new_center_unitx;
 guint new_center_unity;
@@ -678,7 +709,7 @@ map_render_path(Path * path, GdkGC ** gc)
 }
 
 void 
-map_render_paths()
+map_render_paths(void)
 {
 	if ((_show_tracks & ROUTES_MASK) && _route.head != _route.tail) {
 		map_render_path(&_route, _gc + COLORABLE_ROUTE);
@@ -734,7 +765,7 @@ return FALSE;
 }
 
 gboolean 
-map_key_zoom_timeout()
+map_key_zoom_timeout(void)
 {
 if (_key_zoom_new < _zoom) {
 	/* We're currently zooming in (_zoom is decreasing). */
@@ -895,7 +926,7 @@ return nzoom;
 }
 
 static gboolean
-map_autozoomer()
+map_autozoomer(void)
 {
 static gfloat z=5.0;
 static gint last=5;
@@ -1034,6 +1065,9 @@ map_update_destination(lat, lon);
 inp=FALSE;
 }
 
+/**
+ * Mouse scroller zoom in/out callback
+ */
 gboolean 
 map_cb_scroll_event(GtkWidget * widget, GdkEventScroll * event)
 {
@@ -1047,6 +1081,9 @@ if (event->direction == GDK_SCROLL_UP) {
 return FALSE;
 }
 
+/** 
+ * Start map drag operation
+ */
 static void
 map_drag_start(gint x,gint y)
 {
@@ -1057,6 +1094,9 @@ before[1] = press[1];
 map_drag_id=g_signal_connect(G_OBJECT(_map_widget), "motion_notify_event", G_CALLBACK(map_follow_move), NULL);
 }
 
+/**
+ * Stop map drag operation
+ */
 static void
 map_drag_stop(gint x, gint y)
 {
-- 
2.39.5