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/>.
 */

#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 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;

#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);

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