[maemo-developers] Fwd: a patch of maemo-mapper(move map)

[From: jin lv]

hello!
    I write a patch to change the way of moving map . You can use mouse to
drag the map from one point to another point by this patch .
    This patch base on maemo-mapper-1.3.1,but you can change it to
appropriate other versions.
    I hope you like it.
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--- maemo-mapper.c	2006-12-08 10:48:11.810481424 +0800
+++ ../maemo-mapper.c	2006-12-07 15:28:55.000000000 +0800
@@ -762,10 +762,6 @@
 static guint _offsetx = -1;
 static guint _offsety = -1;
 
-static guint press[2]={0,0};
-static guint release[2]={0,0};
-static guint before[2]={0,0};
-
 
 /** CACHED SCREEN INFORMATION THAT IS DEPENDENT ON THE CURRENT VIEW. */
 static guint _screen_grids_halfwidth = 0;
@@ -947,8 +943,6 @@
 static guint _poi_zoom = 6;
 static gboolean _dbconn = FALSE;
 
-static guint _id=0;
-
 /** The singleton auto-route-download data. */
 static AutoRouteDownloadData _autoroute_data;
 
@@ -7122,11 +7116,7 @@
     gtk_widget_add_events(_map_widget,
             GDK_EXPOSURE_MASK
             | GDK_BUTTON_PRESS_MASK
-            | GDK_BUTTON_RELEASE_MASK
-	    | GDK_LEAVE_NOTIFY_MASK
-            | GDK_POINTER_MOTION_MASK
-            | GDK_POINTER_MOTION_HINT_MASK
-            );
+            | GDK_BUTTON_RELEASE_MASK);
 
     osso_hw_set_event_cb(_osso, NULL, osso_cb_hw_state, NULL);
 
@@ -7787,40 +7777,6 @@
 }
 
 static gboolean
-map_follow_move(GtkWidget * widget, GdkEventMotion * event)
-{
-	gint xx, yy;
-        GdkModifierType state;
-
-	if (event->is_hint)
-	{
-                gdk_window_get_pointer(event->window, &xx, &yy, &state);
-		state=event->state;
-	}
-        else
-        {
-                xx = event->x;
-                yy = event->y;
-                state = event->state;
-        }
-
-		guint unitx,unity;
-                guint cx,cy;
-       	        unitx = x2unit((gint)(xx-before[0]));
-               	unity = y2unit((gint)(yy-before[1]));
-                cx=unit2x(_center.unitx);
-       	        cy=unit2y(_center.unity);
-
-               	map_center_unit(
-                        x2unit((gint)(cx-(xx-before[0]) )),
-       	                y2unit((gint)(cy-(yy-before[1]) ))
-               	                );
-
-	before[0]=xx;
-      	before[1]=yy;
-}
-
-static gboolean
 map_cb_button_press(GtkWidget *widget, GdkEventButton *event)
 {
     printf("%s()\n", __PRETTY_FUNCTION__);
@@ -7828,21 +7784,6 @@
     _cmenu_position_x = event->x + 0.5;
     _cmenu_position_y = event->y + 0.5;
 
-	if(event->button==1)
-	{
-		press[0]=event->x;
-	        press[1]=event->y;
-        	before[0]=press[0];
-	        before[1]=press[1];
-		
-		if(event->type==GDK_2BUTTON_PRESS||event->type==GDK_3BUTTON_PRESS)
-        	        return FALSE;
-
-		_id=g_signal_connect(G_OBJECT(_map_widget), "motion_notify_event",
-                        	    G_CALLBACK(map_follow_move), NULL);
-	}
-
-
     /* Return FALSE to allow context menu to work. */
     vprintf("%s(): return FALSE\n", __PRETTY_FUNCTION__);
     return FALSE;
@@ -7852,11 +7793,6 @@
 map_cb_button_release(GtkWidget *widget, GdkEventButton *event)
 {
     printf("%s()\n", __PRETTY_FUNCTION__);
-	
-	release[0]=event->x;
-        release[1]=event->y;
-
-        g_signal_handler_disconnect(G_OBJECT(_map_widget),_id);
 
 #ifdef DEBUG
     if(event->button != 1)
@@ -7875,14 +7811,10 @@
         if(_center_mode > 0)
             gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(
                         _menu_ac_none_item), TRUE);
+        map_center_unit(
+                x2unit((gint)(event->x + 0.5)),
+                y2unit((gint)(event->y + 0.5)));
     }
-	
-    press[0]=0;
-    press[1]=0;
-    release[0]=0;
-    release[1]=0;
-    before[0]=0;
-    before[1]=0;
 
     /* Return FALSE to avoid context menu (if it hasn't popped up already). */
     vprintf("%s(): return FALSE\n", __PRETTY_FUNCTION__);