trunk/src/map-tool.c

/*
 * Copyright (C) 2008-2009 Till Harbaum <till@harbaum.org>.
 *
 * This file is part of GPXView.
 *
 * GPXView is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * GPXView is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GPXView.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * http://topo.geofabrik.de/relief/${z}/${x}/${y}.png  8-15
 * http://topo.geofabrik.de/trail/${z}/${x}/${y}.png   8-15
 */

#include "gpxview.h"
#include "converter.h"
#include <math.h>    // for isnan

#ifdef ENABLE_OSM_GPS_MAP
#include "osm-gps-map.h"
#include "osm-gps-map-osd-classic.h"
#endif

#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
#include <gdk/gdkx.h>
#include <X11/Xatom.h>
#endif

// #define MAP_SOURCE  OSM_GPS_MAP_SOURCE_OPENSTREETMAP
#define MAP_SOURCE  OSM_GPS_MAP_SOURCE_OPENCYCLEMAP
// #define MAP_SOURCE  OSM_GPS_MAP_SOURCE_GOOGLE_STREET
#define GPS_DEFAULT_ZOOM 13

#define PROXY_KEY  "/system/http_proxy/"

static const char *get_proxy_uri(appdata_t *appdata) {
  static char proxy_buffer[64] = "";
  
  /* use environment settings if preset */
  const char *proxy = g_getenv("http_proxy");
  if(proxy) {
    printf("http_proxy: %s\n", proxy);
    return proxy;
  }

  /* ------------- get proxy settings -------------------- */
  if(gconf_client_get_bool(appdata->gconf_client, 
                           PROXY_KEY "use_http_proxy", NULL)) {

    /* we can savely ignore things like "ignore_hosts" since we */
    /* are pretty sure not inside the net of one of our map renderers */
    /* (unless the user works at google :-) */
      
    /* get basic settings */
    char *host = 
      gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
    if(host) {
      int port =
        gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);

      snprintf(proxy_buffer, sizeof(proxy_buffer),
               "http://%s:%u", host, port);

      g_free(host);
    }
    return proxy_buffer;
  }

  return NULL;
}

static void
cb_map_gps(osd_button_t but, map_context_t *context) {
  if(but == OSD_GPS) {
    pos_t *refpos = get_pos(context->appdata);
    if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
      gint zoom;
      g_object_get(OSM_GPS_MAP(context->widget), "zoom", &zoom, NULL);
      if(zoom < 10)
        osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
                                  refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
      else
        osm_gps_map_set_center(OSM_GPS_MAP(context->widget),
                               refpos->lat, refpos->lon);

      /* re-enable centering */
      g_object_set(context->widget, "auto-center", TRUE, NULL);
    } else {
      /* no coordinates given: display the entire world */
      osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), 
                                0.0, 0.0, 1);
    }
  }
}

static int dist2pixel(map_context_t *context, float km, float lat) {
  return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
}

static gboolean map_gps_update(gpointer data) {
  map_context_t *context = (map_context_t*)data;

  /* get reference position ... */
  pos_t *refpos = get_pos(context->appdata);
  gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);

  /* ... and enable "goto" button if it's valid */
  osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget), 
                 OSM_GPS_MAP_OSD_CALLBACK(ok?cb_map_gps:NULL), context);

  if(ok) {
    float heading = NAN;
    int radius = 0;

    if(context->appdata->use_gps) {
      heading = gps_get_heading(context->appdata);

      /* get error */
      float eph = gps_get_eph(context->appdata);
      if(!isnan(eph)) 
        radius = dist2pixel(context, eph/1000, refpos->lat);
    }

    g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
    osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget), 
                         refpos->lat, refpos->lon, heading);
  } else
    osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
  
  return TRUE;
}

static gboolean on_map_configure(GtkWidget *widget,
                                 GdkEventConfigure *event,
                                 map_context_t *context) {

  if(!context->map_complete) {

    /* set default values if they are invalid */
    if(!context->appdata->map.zoom || 
       isnan(context->appdata->map.pos.lat) ||
       isnan(context->appdata->map.pos.lon)) {
      printf("no valid map position found\n");
      
      pos_t *refpos = get_pos(context->appdata);
      if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
        /* use gps position if present */
        context->appdata->map.pos = *refpos;
        context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
      } else {
        /* use world map otherwise */
        context->appdata->map.pos.lat = 0.0;
        context->appdata->map.pos.lon = 0.0;
        context->appdata->map.zoom = 1;
      }
    }
    
    /* jump to initial position */
    osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget), 
                              context->appdata->map.pos.lat, 
                              context->appdata->map.pos.lon, 
                              context->appdata->map.zoom);
    context->map_complete = TRUE;
  }

  return FALSE;
}

static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
  while(cache) {
    GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
    
    osm_gps_map_add_image(OSM_GPS_MAP(map), 
                          cache->pos.lat, cache->pos.lon, icon);

    cache = cache->next;
  }
}

static void
map_cachelist_nearest(cache_t *cache, pos_t *pos, 
                      cache_t **result, float *distance) {
  while(cache) {
    float dist = 
      pow(cache->pos.lat - pos->lat, 2) + 
      pow(cache->pos.lon - pos->lon, 2);

    if(!(dist > *distance)) {
      *result = cache;
      *distance = dist;
    }

    cache = cache->next;
  }
}

static cache_t *map_closest(map_context_t *context, pos_t *pos) {
  cache_t *result = NULL;
  float distance = NAN;
  
#ifdef USE_MAEMO
  if(!context->appdata->cur_gpx) {
#endif
    /* search all geocaches */
    gpx_t *gpx = context->appdata->gpx;
    while(gpx) {
      map_cachelist_nearest(gpx->cache, pos, &result, &distance);
      gpx = gpx->next;
    }
#ifdef USE_MAEMO
  } else {
    map_cachelist_nearest(context->appdata->cur_gpx->cache, 
                          pos, &result, &distance);
  }
#endif

  return result;
}

/* translate between osm-gps-map positions and gpxview ones */
pos_t coord2pos(coord_t coo) {
  pos_t pos;
  pos.lat = rad2deg(coo.rlat);
  pos.lon = rad2deg(coo.rlon);
  return pos;
}

#define CLICK_FUZZ (24)

static gboolean
on_map_button_press_event(GtkWidget *widget, 
                            GdkEventButton *event, map_context_t *context) {
  OsmGpsMap *map = OSM_GPS_MAP(context->widget);

  /* check if we actually clicked parts of the OSD */
  if(osm_gps_map_osd_check(map, event->x, event->y) != OSD_NONE)
    return FALSE;

  /* got a press event without release event? eat it! */
  if(context->press_on != NULL) {
    printf("PRESS: already\n");
    return FALSE;
  }

  pos_t pos = 
    coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));

  cache_t *nearest = map_closest(context, &pos);  
  if(nearest) {
    float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
    if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) 
      context->press_on = nearest;
  }
  
  return FALSE;
}

static void
cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
  /* convert the pixbuf into something cairo can handle */

  // Create a new ImageSurface
  cairo_surface_t *image_surface = 
    cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 
                               gdk_pixbuf_get_width(buf),
                               gdk_pixbuf_get_height(buf));

  // Create the new Context for the ImageSurface
  cairo_t *context = cairo_create(image_surface);

  // Draw the image on the new Context
  gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
  cairo_paint(context);

  // now draw this onto the original context 
  cairo_set_source_surface(cr, image_surface, x, y);

  cairo_paint(cr);
}

#ifndef BIG_BALLOONS
#define LINE_SKIP  7
#else
#define LINE_SKIP  12
#endif

static void 
balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
  cache_t *cache = (cache_t*)data;

#if 0
  /* draw pink background to check clipping */
  cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
  cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
  cairo_fill_preserve (cr);
  cairo_set_line_width (cr, 0);
  cairo_stroke (cr);
#endif

  /* leave a little border top and left */
  gint x = rect->x, y = rect->y;

  /* draw the cache type icon ... */
  GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
  cairo_draw_pixbuf(cr, icon, x, y);

  /* ... and right of it the waypoint id */
  cairo_text_extents_t extents;

  if(cache->id) {
    cairo_select_font_face (cr, "Sans",
                            CAIRO_FONT_SLANT_NORMAL,
                            CAIRO_FONT_WEIGHT_BOLD);
  
#ifndef BIG_BALLOONS
    cairo_set_font_size (cr, 20.0);
#else
    cairo_set_font_size (cr, 36.0);
#endif

    cairo_text_extents (cr, cache->id, &extents);

    /* display id right of icon vertically centered */
    x += gdk_pixbuf_get_width(icon) + 5;
    y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
    cairo_move_to (cr, x, y);
    cairo_set_source_rgba (cr, 0, 0, 0, 1);
    cairo_show_text (cr, cache->id);
    cairo_stroke (cr);

    y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
  } else
    y += gdk_pixbuf_get_height(icon);

  /* return to the left border and below icon/text */
  x = rect->x;

  /* everything from here uses the same font */
  cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
                          CAIRO_FONT_WEIGHT_NORMAL);
#ifndef BIG_BALLOONS
  cairo_set_font_size (cr, 14.0);
#else
  cairo_set_font_size (cr, 22.0);
#endif

  if(cache->name) {
    /* draw cache name */
    cairo_text_extents (cr, cache->name, &extents);
    y += extents.height;
    cairo_move_to (cr, x, y);
    cairo_set_source_rgba (cr, 0, 0, 0, 1);
    cairo_show_text (cr, cache->name);
    cairo_stroke (cr);
  
    /* return to the left border and below text */
    y += LINE_SKIP;
    x = rect->x;
  }

  if(cache->terrain) {
    /* draw cache rating */
    const char *terrain = "Terrain:"; 
    icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
    cairo_text_extents (cr, _(terrain), &extents);
    y += (gdk_pixbuf_get_height(icon) + extents.height)/2;

    /* draw "Terrain:" string */
    cairo_move_to (cr, x, y);
    cairo_set_source_rgba (cr, 0, 0, 0, 1);
    cairo_show_text (cr, _(terrain));
    cairo_stroke (cr);
    x += extents.width + 2;
  
    /* draw terrain stars */
    cairo_draw_pixbuf(cr, icon, x, y - 
                      (gdk_pixbuf_get_height(icon) + extents.height)/2);

    x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
    y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
  }

  if(cache->difficulty) {
    const char *difficulty = "Difficulty:"; 
    cairo_text_extents (cr, _(difficulty), &extents);
    y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
    
    /* draw "Difficulty:" string */
    cairo_move_to (cr, x, y);
    cairo_set_source_rgba (cr, 0, 0, 0, 1);
    cairo_show_text (cr, _(difficulty));
    cairo_stroke (cr);
    x += extents.width + 2;
    
    icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
    cairo_draw_pixbuf(cr, icon, x, y - 
                      (gdk_pixbuf_get_height(icon) + extents.height)/2);
  }
}

static gboolean
on_map_button_release_event(GtkWidget *widget, 
                            GdkEventButton *event, map_context_t *context) {
  OsmGpsMap *map = OSM_GPS_MAP(context->widget);

  if(context->press_on) {
    coord_t coo;
    coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);

    pos_t pos = 
      coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));

    cache_t *nearest = map_closest(context, &pos);  
    if(nearest && nearest == context->press_on) {
      float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
      if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
        
        osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
                                 balloon_draw_cb, nearest);
      }
    }
    context->press_on = NULL;
  } else {
    /* save new map position */
    gfloat lat, lon;
    g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
    context->appdata->map.pos.lat = lat;
    context->appdata->map.pos.lon = lon;
  }

  return FALSE;
}

static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
  appdata_t *appdata = context->appdata;
  
  printf("destroy map window\n");

  /* save map parameters */
  OsmGpsMap *map = OSM_GPS_MAP(context->widget);
  gint zoom;
  g_object_get(map, "zoom", &zoom, NULL);
  context->appdata->map.zoom = zoom;

  gfloat lat, lon;
  g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
  context->appdata->map.pos.lat = lat;
  context->appdata->map.pos.lon = lon;

  gint source;
  g_object_get(map, "map-source", &source, NULL);
  context->appdata->map.source = source;

#if MAEMO_VERSION_MAJOR == 5
  /* restore cur_view */
  context->appdata->cur_view = context->old_view;
#endif

  gtk_timeout_remove(context->handler_id);

  g_free(context);
  appdata->map.context = NULL;
}

#if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
/* get access to zoom buttons */
static void
on_window_realize(GtkWidget *widget, gpointer data) {
  if (widget->window) {
    unsigned char value = 1;
    Atom hildon_zoom_key_atom = 
      gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
      integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
    Display *dpy = 
      GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
    Window w = GDK_WINDOW_XID(widget->window);

    XChangeProperty(dpy, w, hildon_zoom_key_atom, 
                    integer_atom, 8, PropModeReplace, &value, 1);
  }
}
#endif

void map(appdata_t *appdata) {
  map_context_t *context = NULL; 

  /* if the map window already exists, just raise it */
  if(appdata->map.context) {
    gtk_window_present(GTK_WINDOW(appdata->map.context->window));
    return;
  }

  context = appdata->map.context = g_new0(map_context_t, 1);
  context->appdata = appdata;
  context->map_complete = FALSE;

  /* cleanup old (pre 0.8.7) path if it exists */
  char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
  if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
    printf("old file path %s exists\n", old_path);
    rmdir_recursive(old_path);
  }

  /* It is recommanded that all applications share these same */
  /* map path, so data is only cached once. The path should be: */
  /* ~/.osm-gps-map on standard PC     (users home) */
  /* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
  /* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
#if !defined(USE_MAEMO)
  char *p = getenv("HOME");
  if(!p) p = "/tmp"; 
  char *path = g_strdup_printf("%s/.osm-gps-map", p);
#else
#if MAEMO_VERSION_MAJOR == 5
  char *path = g_strdup("/home/user/.osm-gps-map");
#else
  char *path = g_strdup("/media/mmc2/osm-gps-map");
#endif
#endif

  const char *proxy = get_proxy_uri(appdata);

  gint source = context->appdata->map.source;
  if(!source) source = MAP_SOURCE;

  context->widget = g_object_new(OSM_TYPE_GPS_MAP,
                 "map-source",               source,
                 "tile-cache",               path,
                 "auto-center",              FALSE,
                 "record-trip-history",      FALSE, 
                 "show-trip-history",        FALSE, 
                 proxy?"proxy-uri":NULL,     proxy,
                 NULL);

  g_free(path);

  osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
  
  char *name = NULL;
#ifdef USE_MAEMO
  if(!appdata->cur_gpx) {
#endif
    /* draw all geocaches */
    gpx_t *gpx = appdata->gpx;
    while(gpx) {
      map_draw_cachelist(context->widget, gpx->cache);
      gpx = gpx->next;
    }
    name = g_strdup(_("all geocaches"));
#ifdef USE_MAEMO
  } else {
    map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
    name = g_strdup(appdata->cur_gpx->name);
  }
#endif

  char *title = g_strdup_printf(_("Map - %s"), name);
  g_free(name);

#ifdef USE_MAEMO
#ifdef USE_STACKABLE_WINDOW
  context->window = hildon_stackable_window_new();
  /* try to enable the zoom buttons. don't do this on x86 as it breaks */
  /* at runtime with cygwin x */
#ifndef __i386__
  g_signal_connect(G_OBJECT(context->window), "realize", 
                   G_CALLBACK(on_window_realize), NULL);
#endif // MAEMO_VERSION
#else
  context->window = hildon_window_new();
#endif
#else
  context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
#endif

  gtk_window_set_title(GTK_WINDOW(context->window), title);

#ifndef USE_MAEMO
  gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
#endif

  g_free(title);

  g_signal_connect(G_OBJECT(context->widget), "configure-event",
                   G_CALLBACK(on_map_configure), context);

  g_signal_connect(G_OBJECT(context->widget), "button-press-event",
                   G_CALLBACK(on_map_button_press_event), context);

  g_signal_connect(G_OBJECT(context->widget), "button-release-event",
                   G_CALLBACK(on_map_button_release_event), context);

  /* install handler for timed updates of the gps button */
  context->handler_id = gtk_timeout_add(1000, map_gps_update, context);

#if MAEMO_VERSION_MAJOR == 5
  /* prevent some of the main screen things */
  context->old_view = appdata->cur_view;
  appdata->cur_view = NULL;
#endif

  g_signal_connect(G_OBJECT(context->window), "destroy", 
                   G_CALLBACK(on_window_destroy), context);

  gtk_container_add(GTK_CONTAINER(context->window), context->widget); 
  gtk_widget_show_all(GTK_WIDGET(context->window));
}
1	harbaum	33	/*
2	harbaum	55	* Copyright (C) 2008-2009 Till Harbaum <till@harbaum.org>.
3	harbaum	33	*
4			* This file is part of GPXView.
5			*
6			* GPXView is free software: you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation, either version 3 of the License, or
9			* (at your option) any later version.
10			*
11			* GPXView is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with GPXView. If not, see <http://www.gnu.org/licenses/>.
18			*/
19
20	harbaum	93	/*
21			* http://topo.geofabrik.de/relief/${z}/${x}/${y}.png 8-15
22			* http://topo.geofabrik.de/trail/${z}/${x}/${y}.png 8-15
23			*/
24
25	harbaum	33	#include "gpxview.h"
26	harbaum	61	#include "converter.h"
27	harbaum	34	#include <math.h> // for isnan
28	harbaum	33
29			#ifdef ENABLE_OSM_GPS_MAP
30			#include "osm-gps-map.h"
31	harbaum	73	#include "osm-gps-map-osd-classic.h"
32	harbaum	33	#endif
33
34	harbaum	77	#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
35			#include <gdk/gdkx.h>
36			#include <X11/Xatom.h>
37			#endif
38
39	harbaum	84	// #define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENSTREETMAP
40			#define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENCYCLEMAP
41	harbaum	89	// #define MAP_SOURCE OSM_GPS_MAP_SOURCE_GOOGLE_STREET
42	harbaum	48	#define GPS_DEFAULT_ZOOM 13
43
44	harbaum	34	#define PROXY_KEY "/system/http_proxy/"
45
46			static const char get_proxy_uri(appdata_t appdata) {
47			static char proxy_buffer[64] = "";
48	harbaum	33
49			/* use environment settings if preset */
50			const char *proxy = g_getenv("http_proxy");
51			if(proxy) {
52			printf("http_proxy: %s\n", proxy);
53			return proxy;
54			}
55
56	harbaum	34	/* ------------- get proxy settings -------------------- */
57			if(gconf_client_get_bool(appdata->gconf_client,
58			PROXY_KEY "use_http_proxy", NULL)) {
59	harbaum	33
60	harbaum	34	/* we can savely ignore things like "ignore_hosts" since we */
61			/* are pretty sure not inside the net of one of our map renderers */
62			/* (unless the user works at google :-) */
63
64			/* get basic settings */
65			char *host =
66			gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
67			if(host) {
68			int port =
69			gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);
70	harbaum	33
71	harbaum	34	snprintf(proxy_buffer, sizeof(proxy_buffer),
72			"http://%s:%u", host, port);
73	harbaum	33
74	harbaum	34	g_free(host);
75			}
76	harbaum	35	return proxy_buffer;
77	harbaum	34	}
78
79	harbaum	35	return NULL;
80	harbaum	33	}
81
82	harbaum	66	static void
83	harbaum	73	cb_map_gps(osd_button_t but, map_context_t *context) {
84			if(but == OSD_GPS) {
85			pos_t *refpos = get_pos(context->appdata);
86			if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
87	harbaum	81	gint zoom;
88			g_object_get(OSM_GPS_MAP(context->widget), "zoom", &zoom, NULL);
89			if(zoom < 10)
90			osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
91			refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
92			else
93			osm_gps_map_set_center(OSM_GPS_MAP(context->widget),
94			refpos->lat, refpos->lon);
95
96	harbaum	77	/* re-enable centering */
97			g_object_set(context->widget, "auto-center", TRUE, NULL);
98	harbaum	73	} else {
99			/* no coordinates given: display the entire world */
100			osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
101			0.0, 0.0, 1);
102			}
103	harbaum	34	}
104	harbaum	33	}
105
106	harbaum	55	static int dist2pixel(map_context_t *context, float km, float lat) {
107			return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
108			}
109
110	harbaum	33	static gboolean map_gps_update(gpointer data) {
111			map_context_t context = (map_context_t)data;
112
113	harbaum	51	/* get reference position ... */
114	harbaum	34	pos_t *refpos = get_pos(context->appdata);
115			gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
116	harbaum	33
117	harbaum	51	/* ... and enable "goto" button if it's valid */
118	harbaum	66	osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget),
119	harbaum	73	OSM_GPS_MAP_OSD_CALLBACK(ok?cb_map_gps:NULL), context);
120	harbaum	34
121	harbaum	51	if(ok) {
122	harbaum	53	float heading = NAN;
123	harbaum	54	int radius = 0;
124	harbaum	51
125	harbaum	53	if(context->appdata->use_gps) {
126			heading = gps_get_heading(context->appdata);
127
128			/* get error */
129			float eph = gps_get_eph(context->appdata);
130	harbaum	55	if(!isnan(eph))
131			radius = dist2pixel(context, eph/1000, refpos->lat);
132	harbaum	53	}
133
134			g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
135			osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
136	harbaum	51	refpos->lat, refpos->lon, heading);
137			} else
138			osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
139
140	harbaum	33	return TRUE;
141			}
142
143	harbaum	35	static gboolean on_map_configure(GtkWidget *widget,
144			GdkEventConfigure *event,
145			map_context_t *context) {
146	harbaum	33
147	harbaum	85	if(!context->map_complete) {
148
149			/* set default values if they are invalid */
150			if(!context->appdata->map.zoom \|\|
151			isnan(context->appdata->map.pos.lat) \|\|
152			isnan(context->appdata->map.pos.lon)) {
153			printf("no valid map position found\n");
154
155			pos_t *refpos = get_pos(context->appdata);
156			if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
157			/* use gps position if present */
158			context->appdata->map.pos = *refpos;
159			context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
160			} else {
161			/* use world map otherwise */
162			context->appdata->map.pos.lat = 0.0;
163			context->appdata->map.pos.lon = 0.0;
164			context->appdata->map.zoom = 1;
165			}
166			}
167	harbaum	48
168	harbaum	85	/* jump to initial position */
169			osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
170			context->appdata->map.pos.lat,
171			context->appdata->map.pos.lon,
172			context->appdata->map.zoom);
173			context->map_complete = TRUE;
174	harbaum	48	}
175	harbaum	35
176			return FALSE;
177			}
178
179	harbaum	38	static void map_draw_cachelist(GtkWidget map, cache_t cache) {
180			while(cache) {
181			GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
182
183			osm_gps_map_add_image(OSM_GPS_MAP(map),
184			cache->pos.lat, cache->pos.lon, icon);
185
186			cache = cache->next;
187			}
188			}
189
190	harbaum	41	static void
191			map_cachelist_nearest(cache_t cache, pos_t pos,
192			cache_t *result, float distance) {
193			while(cache) {
194			float dist =
195			pow(cache->pos.lat - pos->lat, 2) +
196			pow(cache->pos.lon - pos->lon, 2);
197
198			if(!(dist > *distance)) {
199			*result = cache;
200			*distance = dist;
201			}
202
203			cache = cache->next;
204			}
205			}
206
207			static cache_t map_closest(map_context_t context, pos_t *pos) {
208			cache_t *result = NULL;
209			float distance = NAN;
210
211			#ifdef USE_MAEMO
212			if(!context->appdata->cur_gpx) {
213			#endif
214			/* search all geocaches */
215			gpx_t *gpx = context->appdata->gpx;
216			while(gpx) {
217			map_cachelist_nearest(gpx->cache, pos, &result, &distance);
218			gpx = gpx->next;
219			}
220			#ifdef USE_MAEMO
221			} else {
222			map_cachelist_nearest(context->appdata->cur_gpx->cache,
223			pos, &result, &distance);
224			}
225			#endif
226
227			return result;
228			}
229
230			/* translate between osm-gps-map positions and gpxview ones */
231			pos_t coord2pos(coord_t coo) {
232			pos_t pos;
233	harbaum	61	pos.lat = rad2deg(coo.rlat);
234			pos.lon = rad2deg(coo.rlon);
235	harbaum	41	return pos;
236			}
237
238	harbaum	47	#define CLICK_FUZZ (24)
239	harbaum	42
240	harbaum	41	static gboolean
241			on_map_button_press_event(GtkWidget *widget,
242			GdkEventButton event, map_context_t context) {
243			OsmGpsMap *map = OSM_GPS_MAP(context->widget);
244
245	harbaum	86	/* check if we actually clicked parts of the OSD */
246			if(osm_gps_map_osd_check(map, event->x, event->y) != OSD_NONE)
247			return FALSE;
248
249	harbaum	44	/* got a press event without release event? eat it! */
250			if(context->press_on != NULL) {
251			printf("PRESS: already\n");
252	harbaum	86	return FALSE;
253	harbaum	44	}
254
255	harbaum	41	pos_t pos =
256	harbaum	42	coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
257	harbaum	41
258	harbaum	42	cache_t *nearest = map_closest(context, &pos);
259			if(nearest) {
260			float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
261	harbaum	44	if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
262	harbaum	42	context->press_on = nearest;
263			}
264	harbaum	44
265	harbaum	41	return FALSE;
266			}
267
268	harbaum	58	static void
269			cairo_draw_pixbuf(cairo_t cr, GdkPixbuf buf, gint x, gint y) {
270			/* convert the pixbuf into something cairo can handle */
271
272			// Create a new ImageSurface
273			cairo_surface_t *image_surface =
274			cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
275			gdk_pixbuf_get_width(buf),
276			gdk_pixbuf_get_height(buf));
277
278			// Create the new Context for the ImageSurface
279			cairo_t *context = cairo_create(image_surface);
280
281			// Draw the image on the new Context
282			gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
283			cairo_paint(context);
284
285			// now draw this onto the original context
286			cairo_set_source_surface(cr, image_surface, x, y);
287	harbaum	60
288	harbaum	58	cairo_paint(cr);
289			}
290
291	harbaum	65	#ifndef BIG_BALLOONS
292	harbaum	60	#define LINE_SKIP 7
293	harbaum	65	#else
294			#define LINE_SKIP 12
295			#endif
296	harbaum	59
297	harbaum	58	static void
298			balloon_draw_cb(cairo_t cr, OsmGpsMapRect_t rect, gpointer data) {
299			cache_t cache = (cache_t)data;
300
301			#if 0
302			/* draw pink background to check clipping */
303			cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
304			cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
305			cairo_fill_preserve (cr);
306			cairo_set_line_width (cr, 0);
307			cairo_stroke (cr);
308			#endif
309
310			/* leave a little border top and left */
311			gint x = rect->x, y = rect->y;
312
313			/* draw the cache type icon ... */
314			GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
315			cairo_draw_pixbuf(cr, icon, x, y);
316
317			/* ... and right of it the waypoint id */
318			cairo_text_extents_t extents;
319
320	harbaum	60	if(cache->id) {
321			cairo_select_font_face (cr, "Sans",
322			CAIRO_FONT_SLANT_NORMAL,
323			CAIRO_FONT_WEIGHT_BOLD);
324	harbaum	58
325	harbaum	65	#ifndef BIG_BALLOONS
326	harbaum	60	cairo_set_font_size (cr, 20.0);
327	harbaum	65	#else
328			cairo_set_font_size (cr, 36.0);
329			#endif
330
331	harbaum	60	cairo_text_extents (cr, cache->id, &extents);
332	harbaum	58
333	harbaum	60	/* display id right of icon vertically centered */
334			x += gdk_pixbuf_get_width(icon) + 5;
335			y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
336			cairo_move_to (cr, x, y);
337			cairo_set_source_rgba (cr, 0, 0, 0, 1);
338			cairo_show_text (cr, cache->id);
339			cairo_stroke (cr);
340	harbaum	59
341	harbaum	60	y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
342			} else
343			y += gdk_pixbuf_get_height(icon);
344
345	harbaum	59	/* return to the left border and below icon/text */
346			x = rect->x;
347
348	harbaum	60	/* everything from here uses the same font */
349			cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
350	harbaum	59	CAIRO_FONT_WEIGHT_NORMAL);
351	harbaum	65	#ifndef BIG_BALLOONS
352	harbaum	59	cairo_set_font_size (cr, 14.0);
353	harbaum	65	#else
354	harbaum	66	cairo_set_font_size (cr, 22.0);
355	harbaum	65	#endif
356	harbaum	59
357	harbaum	60	if(cache->name) {
358			/* draw cache name */
359			cairo_text_extents (cr, cache->name, &extents);
360			y += extents.height;
361			cairo_move_to (cr, x, y);
362			cairo_set_source_rgba (cr, 0, 0, 0, 1);
363			cairo_show_text (cr, cache->name);
364			cairo_stroke (cr);
365	harbaum	58
366	harbaum	60	/* return to the left border and below text */
367			y += LINE_SKIP;
368			x = rect->x;
369			}
370
371			if(cache->terrain) {
372			/* draw cache rating */
373			const char *terrain = "Terrain:";
374			icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
375			cairo_text_extents (cr, _(terrain), &extents);
376			y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
377
378			/* draw "Terrain:" string */
379			cairo_move_to (cr, x, y);
380			cairo_set_source_rgba (cr, 0, 0, 0, 1);
381			cairo_show_text (cr, _(terrain));
382			cairo_stroke (cr);
383			x += extents.width + 2;
384
385			/* draw terrain stars */
386			cairo_draw_pixbuf(cr, icon, x, y -
387			(gdk_pixbuf_get_height(icon) + extents.height)/2);
388
389			x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
390			y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
391			}
392
393			if(cache->difficulty) {
394			const char *difficulty = "Difficulty:";
395			cairo_text_extents (cr, _(difficulty), &extents);
396			y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
397
398			/* draw "Difficulty:" string */
399			cairo_move_to (cr, x, y);
400			cairo_set_source_rgba (cr, 0, 0, 0, 1);
401			cairo_show_text (cr, _(difficulty));
402			cairo_stroke (cr);
403			x += extents.width + 2;
404
405			icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
406			cairo_draw_pixbuf(cr, icon, x, y -
407			(gdk_pixbuf_get_height(icon) + extents.height)/2);
408			}
409	harbaum	58	}
410
411	harbaum	41	static gboolean
412			on_map_button_release_event(GtkWidget *widget,
413			GdkEventButton event, map_context_t context) {
414	harbaum	48	OsmGpsMap *map = OSM_GPS_MAP(context->widget);
415
416	harbaum	42	if(context->press_on) {
417	harbaum	57	coord_t coo;
418			coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
419
420	harbaum	42	pos_t pos =
421			coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
422	harbaum	41
423	harbaum	42	cache_t *nearest = map_closest(context, &pos);
424			if(nearest && nearest == context->press_on) {
425			float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
426	harbaum	57	if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
427
428	harbaum	58	osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
429			balloon_draw_cb, nearest);
430	harbaum	57	}
431	harbaum	42	}
432	harbaum	44	context->press_on = NULL;
433	harbaum	48	} else {
434			/* save new map position */
435			gfloat lat, lon;
436			g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
437			context->appdata->map.pos.lat = lat;
438			context->appdata->map.pos.lon = lon;
439	harbaum	41	}
440
441			return FALSE;
442			}
443
444	harbaum	56	static void on_window_destroy(GtkWidget widget, map_context_t context) {
445			appdata_t *appdata = context->appdata;
446
447			printf("destroy map window\n");
448
449	harbaum	48	/* save map parameters */
450			OsmGpsMap *map = OSM_GPS_MAP(context->widget);
451			gint zoom;
452			g_object_get(map, "zoom", &zoom, NULL);
453			context->appdata->map.zoom = zoom;
454	harbaum	44
455	harbaum	48	gfloat lat, lon;
456			g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
457			context->appdata->map.pos.lat = lat;
458			context->appdata->map.pos.lon = lon;
459
460	harbaum	89	gint source;
461			g_object_get(map, "map-source", &source, NULL);
462			context->appdata->map.source = source;
463
464	harbaum	40	#if MAEMO_VERSION_MAJOR == 5
465			/* restore cur_view */
466			context->appdata->cur_view = context->old_view;
467	harbaum	56	#endif
468	harbaum	40
469			gtk_timeout_remove(context->handler_id);
470	harbaum	56
471	harbaum	40	g_free(context);
472	harbaum	56	appdata->map.context = NULL;
473	harbaum	40	}
474
475	harbaum	77	#if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
476			/* get access to zoom buttons */
477			static void
478			on_window_realize(GtkWidget *widget, gpointer data) {
479			if (widget->window) {
480			unsigned char value = 1;
481			Atom hildon_zoom_key_atom =
482			gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
483			integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
484			Display *dpy =
485			GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
486			Window w = GDK_WINDOW_XID(widget->window);
487
488			XChangeProperty(dpy, w, hildon_zoom_key_atom,
489			integer_atom, 8, PropModeReplace, &value, 1);
490			}
491			}
492			#endif
493
494	harbaum	33	void map(appdata_t *appdata) {
495	harbaum	56	map_context_t *context = NULL;
496
497			/* if the map window already exists, just raise it */
498			if(appdata->map.context) {
499			gtk_window_present(GTK_WINDOW(appdata->map.context->window));
500			return;
501			}
502
503			context = appdata->map.context = g_new0(map_context_t, 1);
504	harbaum	40	context->appdata = appdata;
505	harbaum	85	context->map_complete = FALSE;
506	harbaum	33
507	harbaum	77	/* cleanup old (pre 0.8.7) path if it exists */
508			char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
509			if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
510			printf("old file path %s exists\n", old_path);
511			rmdir_recursive(old_path);
512			}
513
514			/* It is recommanded that all applications share these same */
515			/* map path, so data is only cached once. The path should be: */
516			/* ~/.osm-gps-map on standard PC (users home) */
517			/* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
518			/* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
519			#if !defined(USE_MAEMO)
520			char *p = getenv("HOME");
521			if(!p) p = "/tmp";
522			char *path = g_strdup_printf("%s/.osm-gps-map", p);
523			#else
524			#if MAEMO_VERSION_MAJOR == 5
525			char *path = g_strdup("/home/user/.osm-gps-map");
526			#else
527			char *path = g_strdup("/media/mmc2/osm-gps-map");
528			#endif
529			#endif
530
531	harbaum	41	const char *proxy = get_proxy_uri(appdata);
532
533	harbaum	89	gint source = context->appdata->map.source;
534			if(!source) source = MAP_SOURCE;
535
536	harbaum	41	context->widget = g_object_new(OSM_TYPE_GPS_MAP,
537	harbaum	89	"map-source", source,
538	harbaum	55	"tile-cache", path,
539			"auto-center", FALSE,
540			"record-trip-history", FALSE,
541			"show-trip-history", FALSE,
542			proxy?"proxy-uri":NULL, proxy,
543	harbaum	41	NULL);
544
545			g_free(path);
546
547	harbaum	73	osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
548
549	harbaum	41	char *name = NULL;
550			#ifdef USE_MAEMO
551			if(!appdata->cur_gpx) {
552			#endif
553			/* draw all geocaches */
554			gpx_t *gpx = appdata->gpx;
555			while(gpx) {
556			map_draw_cachelist(context->widget, gpx->cache);
557			gpx = gpx->next;
558			}
559			name = g_strdup(_("all geocaches"));
560			#ifdef USE_MAEMO
561			} else {
562			map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
563	harbaum	44	name = g_strdup(appdata->cur_gpx->name);
564	harbaum	41	}
565			#endif
566
567			char *title = g_strdup_printf(_("Map - %s"), name);
568			g_free(name);
569
570	harbaum	56	#ifdef USE_MAEMO
571			#ifdef USE_STACKABLE_WINDOW
572			context->window = hildon_stackable_window_new();
573	harbaum	77	/* try to enable the zoom buttons. don't do this on x86 as it breaks */
574			/* at runtime with cygwin x */
575			#ifndef __i386__
576			g_signal_connect(G_OBJECT(context->window), "realize",
577			G_CALLBACK(on_window_realize), NULL);
578			#endif // MAEMO_VERSION
579	harbaum	40	#else
580	harbaum	56	context->window = hildon_window_new();
581			#endif
582			#else
583			context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
584			#endif
585	harbaum	33
586	harbaum	56	gtk_window_set_title(GTK_WINDOW(context->window), title);
587
588	harbaum	33	#ifndef USE_MAEMO
589	harbaum	56	gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
590	harbaum	33	#endif
591
592	harbaum	41	g_free(title);
593	harbaum	33
594	harbaum	41	g_signal_connect(G_OBJECT(context->widget), "configure-event",
595			G_CALLBACK(on_map_configure), context);
596	harbaum	33
597	harbaum	41	g_signal_connect(G_OBJECT(context->widget), "button-press-event",
598			G_CALLBACK(on_map_button_press_event), context);
599	harbaum	33
600	harbaum	40	g_signal_connect(G_OBJECT(context->widget), "button-release-event",
601			G_CALLBACK(on_map_button_release_event), context);
602	harbaum	33
603			/* install handler for timed updates of the gps button */
604	harbaum	40	context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
605	harbaum	33
606	harbaum	40	#if MAEMO_VERSION_MAJOR == 5
607			/* prevent some of the main screen things */
608			context->old_view = appdata->cur_view;
609			appdata->cur_view = NULL;
610	harbaum	56	#endif
611	harbaum	40
612	harbaum	56	g_signal_connect(G_OBJECT(context->window), "destroy",
613	harbaum	40	G_CALLBACK(on_window_destroy), context);
614
615	harbaum	63	gtk_container_add(GTK_CONTAINER(context->window), context->widget);
616	harbaum	56	gtk_widget_show_all(GTK_WIDGET(context->window));
617	harbaum	33	}