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

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