trunk/src/misc.c

/*
 * Copyright (C) 2008 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 <math.h>
#include <string.h>
#include <ctype.h>

#include <glib.h>
#include <glib/gstdio.h>

#include "gpxview.h"

#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR >= 5)
#include <hildon/hildon-entry.h>
#endif

char strlastchr(char *str) {
  return str[strlen(str)]-1;
}

/* make sure the entire path "dir" exists and create it if not */
int checkdir(char *dir) {
  struct stat filestat;
  char *p = dir, tmp;

  /* don't try to create root dir */
  if(p[0] == '/') p++;

  do {
    while(*p && *p != '/') p++;
    tmp = *p;
    *p = 0;

    int err = stat(dir, &filestat);
    if(err) {
      if(mkdir(dir, S_IRWXU) != 0) {
        perror("mkdir()");
        *p++ = tmp;
        return -1;
      }
    } else {
      if(!filestat.st_mode & S_IFDIR) {
        printf("File %s exists and is _no_ directory\n", dir);
        *p++ = tmp;
        return -1;
      }
    }
    
    *p++ = tmp;
  } while(tmp && strchr(p, '/'));

  return 0;
}

void pos_lat_str(char *str, int len, float latitude) {
  char *c = _("N");
  float integral, fractional;

  if(isnan(latitude)) 
    str[0] = 0;
  else {
    if(latitude < 0) { latitude = fabs(latitude); c = _("S"); }
    fractional = modff(latitude, &integral);

    snprintf(str, len, "%s %02d° %06.3f'", c, (int)integral, fractional*60.0);
  }
}

GtkWidget *pos_lat(float latitude, int size, int strikethrough) {
  char str[32];

  pos_lat_str(str, sizeof(str), latitude);
  return gtk_label_attrib(str, size, strikethrough);
}

void pos_lon_str(char *str, int len, float longitude) {
  char *c = _("E");
  float integral, fractional;

  if(isnan(longitude)) 
    str[0] = 0;
  else {
    if(longitude < 0) { longitude = fabs(longitude); c = _("W"); }
    fractional = modff(longitude, &integral);

    snprintf(str, len, "%s %03d° %06.3f'", c, (int)integral, fractional*60.0);
  }
}

GtkWidget *pos_lon(float longitude, int size, int strikethrough) {
  char str[32];

  pos_lon_str(str, sizeof(str), longitude);
  return gtk_label_attrib(str, size, strikethrough);
}

float pos_parse_lat(char *str) {
  int integral_int;
  float fractional;
  char c;

  if(sscanf(str, "%c %d° %f'", &c, &integral_int, &fractional) == 3) {
    c = toupper(c);
    
    if(c != 'S' && c != 'N')
      return NAN;
    
    /* prevent -0.0 */
    if(!integral_int && (fractional == 0.0))
      return 0.0;

    return ((c == 'S')?-1:+1) * (integral_int + fractional/60.0);
  }
  
  return NAN;
}

float pos_parse_lon(char *str) {
  int integral_int;
  float fractional;
  char c;

  if(sscanf(str, "%c %d° %f'", &c, &integral_int, &fractional) == 3) {
    c = toupper(c);

    /* O is german "Ost" for "East" */
    if(c != 'E' && c != 'W' && c != 'O')
      return NAN;

    /* prevent -0.0 */
    if(!integral_int && (fractional == 0.0))
      return 0.0;

    return ((c == 'W')?-1:+1) * (integral_int + fractional/60.0);
  }

  return NAN;
}

const char *pos_get_bearing_str(pos_t from, pos_t to) {
  static const char *bear_str[]={ 
    "N", "NE", "E", "SE", "S", "SW", "W", "NW", "" };

  float bearing = gpx_pos_get_bearing(from, to);
  if(!isnan(bearing)) {
    int idx = (bearing+22.5)/45.0;
    /* make sure we stay in icon bounds */
    while(idx < 0) idx += 8;
    while(idx > 7) idx -= 8;
    return _(bear_str[idx]);
  }

  return bear_str[8];  // empty string
}

/* the maemo font size is quite huge, so we adjust some fonts */
/* differently on maemo and non-maemo. Basically "BIG" does nothing */
/* on maemo and "SMALL" only does something on maemo */
#ifdef USE_MAEMO
#define MARKUP_SMALL "<span size='small'>%s</span>"
GtkWidget *gtk_label_small(char *str) {
  GtkWidget *label = gtk_label_new("");
  char *markup = g_markup_printf_escaped(MARKUP_SMALL, str);
  gtk_label_set_markup(GTK_LABEL(label), markup);
  g_free(markup);
  return label;
}
#else
#define MARKUP_BIG "<span size='x-large'>%s</span>"
GtkWidget *gtk_label_big(char *str) {
  GtkWidget *label = gtk_label_new("");
  char *markup = g_markup_printf_escaped(MARKUP_BIG, str);
  gtk_label_set_markup(GTK_LABEL(label), markup);
  g_free(markup);
  return label;
}
#endif

void gtk_label_attrib_set(GtkWidget *label, 
                          char *str, int size, int strikethrough) {
  char format[80];

  snprintf(format, sizeof(format), "<span%s%s%s>%%s</span>", 
#ifdef USE_MAEMO
   (size==SIZE_SMALL)?" size='small'":"",
#else
   (size==SIZE_BIG)?" size='x-large'":"",
#endif
   strikethrough?" strikethrough='yes'":"",
   (strikethrough==STRIKETHROUGH_RED)?" strikethrough_color='red'":"");

  char *markup = g_markup_printf_escaped(format, str);
  //  printf("markup = %s\n", markup);
  gtk_label_set_markup(GTK_LABEL(label), markup);
  g_free(markup);
}

GtkWidget *gtk_label_attrib(char *str, int size, int strikethrough) {
  GtkWidget *label = gtk_label_new("");
  gtk_label_attrib_set(label, str, size, strikethrough);
  return label;
}

GtkWidget *gtk_button_attrib(char *str, int size, int strikethrough) {
  GtkWidget *button = gtk_button_new_with_label("");
  gtk_label_attrib_set(gtk_bin_get_child(GTK_BIN(button)), 
                       str, size, strikethrough);
  return button;
}

void textbox_disable(GtkWidget *widget) {
  gtk_editable_set_editable(GTK_EDITABLE(widget), FALSE);
  gtk_widget_set_sensitive(widget, FALSE);
}

void textbox_enable(GtkWidget *widget) {
  gtk_widget_set_sensitive(widget, TRUE);
  gtk_editable_set_editable(GTK_EDITABLE(widget), TRUE);
}

pos_t *get_pos(appdata_t *appdata) {
  pos_t *pos = &appdata->home;

  if(appdata->active_location) {
    int i = appdata->active_location-1;
    location_t *loc = appdata->location;
    while(i--) loc = loc->next;
    pos = &loc->pos;
  }

  if(appdata->use_gps) {
    pos = gps_get_pos(appdata);

    if(!pos) pos = &appdata->gps;   /* use saved position */
    else     appdata->gps = *pos;   /* save position */
  }
  return pos;
}

void distance_str(char *str, int len, float dist, gboolean imperial) {
  if(isnan(dist))
    snprintf(str, len, "---");
  else if(imperial) {
    /* 1 mil = 1760 yd = 5280 ft ... */
    if(dist<0.018)      snprintf(str, len, "%.1f ft", dist*5280.0);
    else if(dist<0.055) snprintf(str, len, "%.1f yd", dist*1760.0);
    else if(dist<0.55)  snprintf(str, len, "%.0f yd", dist*1760.0);
    else if(dist<10.0)  snprintf(str, len, "%.2f mi", dist);
    else if(dist<100.0) snprintf(str, len, "%.1f mi", dist);
    else                snprintf(str, len, "%.0f mi", dist);
  } else {
    if(dist<0.01)       snprintf(str, len, "%.2f m",  dist*1000.0);
    else if(dist<0.1)   snprintf(str, len, "%.1f m",  dist*1000.0);
    else if(dist<1.0)   snprintf(str, len, "%.0f m",  dist*1000.0);
    else if(dist<100.0) snprintf(str, len, "%.1f km", dist);
    else                snprintf(str, len, "%.0f km", dist);
  }
}

/* return distance in miles or kilometers */
float distance_parse(char *str, gboolean imperial) {
  char unit[4];
  float val = NAN;

  if(sscanf(str, "%f %3s", &val, unit) == 2) {
    gboolean fimp = FALSE;

    if(strcasecmp(unit, "ft") == 0)      { fimp = TRUE;  val /= 5280.0; }
    else if(strcasecmp(unit, "yd") == 0) { fimp = TRUE;  val /= 1760.0; }
    else if(strcasecmp(unit, "mi") == 0) { fimp = TRUE;  }
    else if(strcasecmp(unit, "m")  == 0) { fimp = FALSE; val /= 1000.0; }
    else if(strcasecmp(unit, "km") == 0) { fimp = FALSE; }
    else val = NAN;

    /* found imperial and metric requested? convert miles into kilometers */
    if(fimp & !imperial) val *= 1.609344;

    /* found metric and imperial requested? convert kilometers into miles */
    if(!fimp & imperial) val /= 1.609344;
  }
  return val;
}

static gboolean mark(GtkWidget *widget, gboolean valid) {
  gtk_widget_set_state(widget, valid?GTK_STATE_NORMAL:TAG_STATE);
  return valid;
}

static void callback_modified_lat(GtkWidget *widget, gpointer data ) {
  float i = pos_parse_lat((char*)gtk_entry_get_text(GTK_ENTRY(widget)));
  mark(widget, !isnan(i));
}

/* a entry that is colored red when being "active" */
GtkWidget *lat_entry_new(float lat) {
  GdkColor color;

#if !defined(USE_MAEMO) || (MAEMO_VERSION_MAJOR < 5)
  GtkWidget *widget = gtk_entry_new();
#else
  GtkWidget *widget = hildon_entry_new(HILDON_SIZE_AUTO);
#endif

  gdk_color_parse("#ff0000", &color);
  gtk_widget_modify_text(widget, TAG_STATE, &color);

  char str[32];
  pos_lat_str(str, sizeof(str), lat);
  gtk_entry_set_text(GTK_ENTRY(widget), str);

  g_signal_connect(G_OBJECT(widget), "changed",
                   G_CALLBACK(callback_modified_lat), NULL);
 
  return widget;
}

static void callback_modified_lon(GtkWidget *widget, gpointer data ) {
  float i = pos_parse_lon((char*)gtk_entry_get_text(GTK_ENTRY(widget)));
  mark(widget, !isnan(i));
}

/* a entry that is colored red when filled with invalid coordinate */
GtkWidget *lon_entry_new(float lon) {
  GdkColor color;

#if !defined(USE_MAEMO) || (MAEMO_VERSION_MAJOR < 5)
  GtkWidget *widget = gtk_entry_new();
#else
  GtkWidget *widget = hildon_entry_new(HILDON_SIZE_AUTO);
  //  gtk_entry_set_width_chars(GTK_ENTRY(widget), 14);
#endif

  gdk_color_parse("#ff0000", &color);
  gtk_widget_modify_text(widget, TAG_STATE, &color);

  char str[32];
  pos_lon_str(str, sizeof(str), lon);
  gtk_entry_set_text(GTK_ENTRY(widget), str);

  g_signal_connect(G_OBJECT(widget), "changed",
                   G_CALLBACK(callback_modified_lon), NULL);
 
  return widget;
}


float lat_get(GtkWidget *widget) {
  char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget));
  return pos_parse_lat(p);
}

float lon_get(GtkWidget *widget) {
  char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget));
  return pos_parse_lon(p);
}

static void callback_modified_dist(GtkWidget *widget, gpointer data ) {
  /* don't care for metric/imperial since we only want to know if this */
  /* is parseable at all */
  float i = distance_parse((char*)gtk_entry_get_text(GTK_ENTRY(widget)), FALSE);
  mark(widget, !isnan(i));
}

/* a entry that is colored red when filled with invalid distance */
GtkWidget *dist_entry_new(float dist, gboolean mil) {
  GdkColor color;
  GtkWidget *widget = gtk_entry_new();
  gdk_color_parse("#ff0000", &color);
  gtk_widget_modify_text(widget, TAG_STATE, &color);

  char str[32];
  distance_str(str, sizeof(str), dist, mil);
  gtk_entry_set_text(GTK_ENTRY(widget), str);

  g_signal_connect(G_OBJECT(widget), "changed",
                   G_CALLBACK(callback_modified_dist), NULL);
 
  return widget;
}

float dist_get(GtkWidget *widget, gboolean mil) {
  char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget));
  return distance_parse(p, mil);
}

#ifndef USE_MAEMO
#ifdef ENABLE_BROWSER_INTERFACE
#include <libgnome/gnome-url.h>

int browser_url(appdata_t *appdata, char *url) {
  /* taken from gnome-open, part of libgnome */
  GError *err = NULL;
  gnome_url_show(url, &err);
  return 0;
}
#endif
#endif

/* recursively remove an entire file system */
void rmdir_recursive(char *path) {
  GDir *dir = g_dir_open(path, 0, NULL);
  if(dir) {
    const char *name = g_dir_read_name(dir);
    while(name) {
      char *fullname = g_strdup_printf("%s/%s", path, name);
      //      printf("deleting %s\n", fullname);
      
      if(g_file_test(fullname, G_FILE_TEST_IS_DIR)) 
        rmdir_recursive(fullname);
      else if(g_file_test(fullname, G_FILE_TEST_IS_REGULAR)) 
        g_remove(fullname);

      g_free(fullname);
      name = g_dir_read_name(dir);
    }

    g_dir_close(dir);
  }
  g_rmdir(path);
}

#ifdef ENABLE_BROWSER_INTERFACE
static void on_link_clicked(GtkButton *button, gpointer data) {
  appdata_t *appdata = (appdata_t*)data;
  char *url = g_object_get_data(G_OBJECT(button), "url"); 
  if(url) browser_url(appdata, url);
}
#endif

/* a button containing a weblink */
GtkWidget *link_button_attrib(appdata_t *appdata, char *str, char *url, 
                       int size, int strikethrough) {

#ifdef ENABLE_BROWSER_INTERFACE
  if(url) {
    GtkWidget *button = gtk_button_attrib(str, size, strikethrough);
    g_object_set_data(G_OBJECT(button), "url", url); 
    gtk_signal_connect(GTK_OBJECT(button), "clicked",
                       (GtkSignalFunc)on_link_clicked, appdata);

    return button;
  }
#endif
  return gtk_label_attrib(str, size, strikethrough);
}

#ifdef ENABLE_BROWSER_INTERFACE
static void on_link_id_clicked(GtkButton *button, gpointer data) {
  appdata_t *appdata = (appdata_t*)data;

  unsigned int id = (unsigned int)g_object_get_data(G_OBJECT(button), "id"); 
  char *type = g_object_get_data(G_OBJECT(button), "type"); 

  char *url = g_strdup_printf("http://www.geocaching.com/%s?id=%u", 
                              type, id);

  if(url) {
    browser_url(appdata, url);
    g_free(url);
  }
}
#endif

GtkWidget *link_button_by_id(appdata_t *appdata, char *str, 
                             const char *type, int id) {

#ifdef ENABLE_BROWSER_INTERFACE
  if(id) {
    GtkWidget *ref = gtk_button_new_with_label(str);
#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
    //    hildon_gtk_widget_set_theme_size(ref, 
    //         (HILDON_SIZE_FINGER_HEIGHT | HILDON_SIZE_AUTO_WIDTH));
#endif  
    g_object_set_data(G_OBJECT(ref), "id", (gpointer)id);
    g_object_set_data(G_OBJECT(ref), "type", (gpointer)type);
    gtk_signal_connect(GTK_OBJECT(ref), "clicked",
                       GTK_SIGNAL_FUNC(on_link_id_clicked), appdata);
    
    return ref;
  }
#endif
  return gtk_label_new(str);
}


GtkWidget *link_icon_button_by_id(appdata_t *appdata, GtkWidget *icon, 
                             const char *type, int id) {

#ifdef ENABLE_BROWSER_INTERFACE
  if(id) {
    GtkWidget *ref = gtk_button_new();
    gtk_button_set_image(GTK_BUTTON(ref), icon);

#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
    //    hildon_gtk_widget_set_theme_size(ref, 
    //         (HILDON_SIZE_FINGER_HEIGHT | HILDON_SIZE_AUTO_WIDTH));
#endif  
    g_object_set_data(G_OBJECT(ref), "id", (gpointer)id);
    g_object_set_data(G_OBJECT(ref), "type", (gpointer)type);
    gtk_signal_connect(GTK_OBJECT(ref), "clicked",
                       GTK_SIGNAL_FUNC(on_link_id_clicked), appdata);
    
    return ref;
  }
#endif
  return icon;
}

/* left aligned, word wrapped multiline widget */
GtkWidget *simple_text_widget(char *text) {
  GtkWidget *label = gtk_label_new(text);
  
  gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
  gtk_label_set_line_wrap_mode(GTK_LABEL(label), PANGO_WRAP_WORD);
  gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);

  return label;
}
1	harbaum	1	/*
2			* Copyright (C) 2008 Till Harbaum <till@harbaum.org>.
3			*
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 <math.h>
21			#include <string.h>
22			#include <ctype.h>
23
24	harbaum	77	#include <glib.h>
25			#include <glib/gstdio.h>
26
27	harbaum	1	#include "gpxview.h"
28
29	harbaum	190	#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR >= 5)
30			#include <hildon/hildon-entry.h>
31			#endif
32
33	harbaum	1	char strlastchr(char *str) {
34			return str[strlen(str)]-1;
35			}
36
37			/* make sure the entire path "dir" exists and create it if not */
38			int checkdir(char *dir) {
39			struct stat filestat;
40			char *p = dir, tmp;
41
42			/* don't try to create root dir */
43			if(p[0] == '/') p++;
44
45			do {
46			while(p && p != '/') p++;
47			tmp = *p;
48			*p = 0;
49
50			int err = stat(dir, &filestat);
51			if(err) {
52			if(mkdir(dir, S_IRWXU) != 0) {
53			perror("mkdir()");
54			*p++ = tmp;
55			return -1;
56			}
57			} else {
58			if(!filestat.st_mode & S_IFDIR) {
59			printf("File %s exists and is _no_ directory\n", dir);
60			*p++ = tmp;
61			return -1;
62			}
63			}
64
65			*p++ = tmp;
66			} while(tmp && strchr(p, '/'));
67
68			return 0;
69			}
70
71			void pos_lat_str(char *str, int len, float latitude) {
72			char *c = _("N");
73			float integral, fractional;
74
75	harbaum	13	if(isnan(latitude))
76			str[0] = 0;
77			else {
78			if(latitude < 0) { latitude = fabs(latitude); c = _("S"); }
79			fractional = modff(latitude, &integral);
80	harbaum	1
81	harbaum	13	snprintf(str, len, "%s %02d° %06.3f'", c, (int)integral, fractional*60.0);
82			}
83	harbaum	1	}
84
85			GtkWidget *pos_lat(float latitude, int size, int strikethrough) {
86			char str[32];
87
88			pos_lat_str(str, sizeof(str), latitude);
89			return gtk_label_attrib(str, size, strikethrough);
90			}
91
92			void pos_lon_str(char *str, int len, float longitude) {
93			char *c = _("E");
94			float integral, fractional;
95
96	harbaum	13	if(isnan(longitude))
97			str[0] = 0;
98			else {
99			if(longitude < 0) { longitude = fabs(longitude); c = _("W"); }
100			fractional = modff(longitude, &integral);
101	harbaum	1
102	harbaum	13	snprintf(str, len, "%s %03d° %06.3f'", c, (int)integral, fractional*60.0);
103			}
104	harbaum	1	}
105
106			GtkWidget *pos_lon(float longitude, int size, int strikethrough) {
107			char str[32];
108
109			pos_lon_str(str, sizeof(str), longitude);
110			return gtk_label_attrib(str, size, strikethrough);
111			}
112
113			float pos_parse_lat(char *str) {
114			int integral_int;
115			float fractional;
116			char c;
117
118			if(sscanf(str, "%c %d° %f'", &c, &integral_int, &fractional) == 3) {
119			c = toupper(c);
120
121			if(c != 'S' && c != 'N')
122			return NAN;
123
124			/* prevent -0.0 */
125			if(!integral_int && (fractional == 0.0))
126			return 0.0;
127
128			return ((c == 'S')?-1:+1) * (integral_int + fractional/60.0);
129			}
130
131			return NAN;
132			}
133
134			float pos_parse_lon(char *str) {
135			int integral_int;
136			float fractional;
137			char c;
138
139			if(sscanf(str, "%c %d° %f'", &c, &integral_int, &fractional) == 3) {
140			c = toupper(c);
141
142			/* O is german "Ost" for "East" */
143			if(c != 'E' && c != 'W' && c != 'O')
144			return NAN;
145
146			/* prevent -0.0 */
147			if(!integral_int && (fractional == 0.0))
148			return 0.0;
149
150			return ((c == 'W')?-1:+1) * (integral_int + fractional/60.0);
151			}
152
153			return NAN;
154			}
155
156			const char *pos_get_bearing_str(pos_t from, pos_t to) {
157			static const char *bear_str[]={
158	harbaum	185	"N", "NE", "E", "SE", "S", "SW", "W", "NW", "" };
159
160			float bearing = gpx_pos_get_bearing(from, to);
161			if(!isnan(bearing)) {
162			int idx = (bearing+22.5)/45.0;
163			/* make sure we stay in icon bounds */
164			while(idx < 0) idx += 8;
165			while(idx > 7) idx -= 8;
166			return _(bear_str[idx]);
167			}
168
169			return bear_str[8]; // empty string
170	harbaum	1	}
171
172			/* the maemo font size is quite huge, so we adjust some fonts */
173			/* differently on maemo and non-maemo. Basically "BIG" does nothing */
174			/* on maemo and "SMALL" only does something on maemo */
175			#ifdef USE_MAEMO
176			#define MARKUP_SMALL "<span size='small'>%s</span>"
177			GtkWidget gtk_label_small(char str) {
178			GtkWidget *label = gtk_label_new("");
179			char *markup = g_markup_printf_escaped(MARKUP_SMALL, str);
180			gtk_label_set_markup(GTK_LABEL(label), markup);
181			g_free(markup);
182			return label;
183			}
184			#else
185			#define MARKUP_BIG "<span size='x-large'>%s</span>"
186			GtkWidget gtk_label_big(char str) {
187			GtkWidget *label = gtk_label_new("");
188			char *markup = g_markup_printf_escaped(MARKUP_BIG, str);
189			gtk_label_set_markup(GTK_LABEL(label), markup);
190			g_free(markup);
191			return label;
192			}
193			#endif
194
195			void gtk_label_attrib_set(GtkWidget *label,
196			char *str, int size, int strikethrough) {
197			char format[80];
198
199			snprintf(format, sizeof(format), "<span%s%s%s>%%s</span>",
200			#ifdef USE_MAEMO
201			(size==SIZE_SMALL)?" size='small'":"",
202			#else
203			(size==SIZE_BIG)?" size='x-large'":"",
204			#endif
205			strikethrough?" strikethrough='yes'":"",
206			(strikethrough==STRIKETHROUGH_RED)?" strikethrough_color='red'":"");
207
208			char *markup = g_markup_printf_escaped(format, str);
209			// printf("markup = %s\n", markup);
210			gtk_label_set_markup(GTK_LABEL(label), markup);
211			g_free(markup);
212			}
213
214			GtkWidget gtk_label_attrib(char str, int size, int strikethrough) {
215			GtkWidget *label = gtk_label_new("");
216			gtk_label_attrib_set(label, str, size, strikethrough);
217			return label;
218			}
219
220			GtkWidget gtk_button_attrib(char str, int size, int strikethrough) {
221			GtkWidget *button = gtk_button_new_with_label("");
222			gtk_label_attrib_set(gtk_bin_get_child(GTK_BIN(button)),
223			str, size, strikethrough);
224			return button;
225			}
226
227			void textbox_disable(GtkWidget *widget) {
228			gtk_editable_set_editable(GTK_EDITABLE(widget), FALSE);
229			gtk_widget_set_sensitive(widget, FALSE);
230			}
231
232			void textbox_enable(GtkWidget *widget) {
233			gtk_widget_set_sensitive(widget, TRUE);
234			gtk_editable_set_editable(GTK_EDITABLE(widget), TRUE);
235			}
236
237			pos_t get_pos(appdata_t appdata) {
238			pos_t *pos = &appdata->home;
239
240			if(appdata->active_location) {
241			int i = appdata->active_location-1;
242			location_t *loc = appdata->location;
243			while(i--) loc = loc->next;
244			pos = &loc->pos;
245			}
246
247			if(appdata->use_gps) {
248			pos = gps_get_pos(appdata);
249
250			if(!pos) pos = &appdata->gps; /* use saved position */
251			else appdata->gps = pos; / save position */
252			}
253			return pos;
254			}
255
256			void distance_str(char *str, int len, float dist, gboolean imperial) {
257	harbaum	34	if(isnan(dist))
258			snprintf(str, len, "---");
259			else if(imperial) {
260	harbaum	1	/* 1 mil = 1760 yd = 5280 ft ... */
261			if(dist<0.018) snprintf(str, len, "%.1f ft", dist*5280.0);
262			else if(dist<0.055) snprintf(str, len, "%.1f yd", dist*1760.0);
263			else if(dist<0.55) snprintf(str, len, "%.0f yd", dist*1760.0);
264			else if(dist<10.0) snprintf(str, len, "%.2f mi", dist);
265			else if(dist<100.0) snprintf(str, len, "%.1f mi", dist);
266			else snprintf(str, len, "%.0f mi", dist);
267			} else {
268			if(dist<0.01) snprintf(str, len, "%.2f m", dist*1000.0);
269			else if(dist<0.1) snprintf(str, len, "%.1f m", dist*1000.0);
270			else if(dist<1.0) snprintf(str, len, "%.0f m", dist*1000.0);
271			else if(dist<100.0) snprintf(str, len, "%.1f km", dist);
272			else snprintf(str, len, "%.0f km", dist);
273			}
274			}
275
276			/* return distance in miles or kilometers */
277			float distance_parse(char *str, gboolean imperial) {
278			char unit[4];
279			float val = NAN;
280
281			if(sscanf(str, "%f %3s", &val, unit) == 2) {
282			gboolean fimp = FALSE;
283
284			if(strcasecmp(unit, "ft") == 0) { fimp = TRUE; val /= 5280.0; }
285			else if(strcasecmp(unit, "yd") == 0) { fimp = TRUE; val /= 1760.0; }
286			else if(strcasecmp(unit, "mi") == 0) { fimp = TRUE; }
287			else if(strcasecmp(unit, "m") == 0) { fimp = FALSE; val /= 1000.0; }
288			else if(strcasecmp(unit, "km") == 0) { fimp = FALSE; }
289			else val = NAN;
290
291			/* found imperial and metric requested? convert miles into kilometers */
292			if(fimp & !imperial) val *= 1.609344;
293
294			/* found metric and imperial requested? convert kilometers into miles */
295			if(!fimp & imperial) val /= 1.609344;
296			}
297			return val;
298			}
299
300			static gboolean mark(GtkWidget *widget, gboolean valid) {
301			gtk_widget_set_state(widget, valid?GTK_STATE_NORMAL:TAG_STATE);
302			return valid;
303			}
304
305			static void callback_modified_lat(GtkWidget *widget, gpointer data ) {
306			float i = pos_parse_lat((char*)gtk_entry_get_text(GTK_ENTRY(widget)));
307			mark(widget, !isnan(i));
308			}
309
310			/* a entry that is colored red when being "active" */
311			GtkWidget *lat_entry_new(float lat) {
312			GdkColor color;
313	harbaum	190
314			#if !defined(USE_MAEMO) \|\| (MAEMO_VERSION_MAJOR < 5)
315	harbaum	1	GtkWidget *widget = gtk_entry_new();
316	harbaum	190	#else
317			GtkWidget *widget = hildon_entry_new(HILDON_SIZE_AUTO);
318			#endif
319
320	harbaum	1	gdk_color_parse("#ff0000", &color);
321			gtk_widget_modify_text(widget, TAG_STATE, &color);
322
323			char str[32];
324			pos_lat_str(str, sizeof(str), lat);
325			gtk_entry_set_text(GTK_ENTRY(widget), str);
326
327			g_signal_connect(G_OBJECT(widget), "changed",
328			G_CALLBACK(callback_modified_lat), NULL);
329
330			return widget;
331			}
332
333			static void callback_modified_lon(GtkWidget *widget, gpointer data ) {
334			float i = pos_parse_lon((char*)gtk_entry_get_text(GTK_ENTRY(widget)));
335			mark(widget, !isnan(i));
336			}
337
338			/* a entry that is colored red when filled with invalid coordinate */
339			GtkWidget *lon_entry_new(float lon) {
340			GdkColor color;
341	harbaum	190
342			#if !defined(USE_MAEMO) \|\| (MAEMO_VERSION_MAJOR < 5)
343	harbaum	1	GtkWidget *widget = gtk_entry_new();
344	harbaum	190	#else
345			GtkWidget *widget = hildon_entry_new(HILDON_SIZE_AUTO);
346			// gtk_entry_set_width_chars(GTK_ENTRY(widget), 14);
347			#endif
348
349	harbaum	1	gdk_color_parse("#ff0000", &color);
350			gtk_widget_modify_text(widget, TAG_STATE, &color);
351
352			char str[32];
353			pos_lon_str(str, sizeof(str), lon);
354			gtk_entry_set_text(GTK_ENTRY(widget), str);
355
356			g_signal_connect(G_OBJECT(widget), "changed",
357			G_CALLBACK(callback_modified_lon), NULL);
358
359			return widget;
360			}
361
362
363			float lat_get(GtkWidget *widget) {
364			char p = (char)gtk_entry_get_text(GTK_ENTRY(widget));
365			return pos_parse_lat(p);
366			}
367
368			float lon_get(GtkWidget *widget) {
369			char p = (char)gtk_entry_get_text(GTK_ENTRY(widget));
370			return pos_parse_lon(p);
371			}
372
373			static void callback_modified_dist(GtkWidget *widget, gpointer data ) {
374			/* don't care for metric/imperial since we only want to know if this */
375			/* is parseable at all */
376			float i = distance_parse((char*)gtk_entry_get_text(GTK_ENTRY(widget)), FALSE);
377			mark(widget, !isnan(i));
378			}
379
380			/* a entry that is colored red when filled with invalid distance */
381			GtkWidget *dist_entry_new(float dist, gboolean mil) {
382			GdkColor color;
383			GtkWidget *widget = gtk_entry_new();
384			gdk_color_parse("#ff0000", &color);
385			gtk_widget_modify_text(widget, TAG_STATE, &color);
386
387			char str[32];
388			distance_str(str, sizeof(str), dist, mil);
389			gtk_entry_set_text(GTK_ENTRY(widget), str);
390
391			g_signal_connect(G_OBJECT(widget), "changed",
392			G_CALLBACK(callback_modified_dist), NULL);
393
394			return widget;
395			}
396
397			float dist_get(GtkWidget *widget, gboolean mil) {
398			char p = (char)gtk_entry_get_text(GTK_ENTRY(widget));
399			return distance_parse(p, mil);
400			}
401
402			#ifndef USE_MAEMO
403			#ifdef ENABLE_BROWSER_INTERFACE
404			#include <libgnome/gnome-url.h>
405
406			int browser_url(appdata_t appdata, char url) {
407			/* taken from gnome-open, part of libgnome */
408			GError *err = NULL;
409			gnome_url_show(url, &err);
410			return 0;
411			}
412			#endif
413			#endif
414	harbaum	77
415			/* recursively remove an entire file system */
416			void rmdir_recursive(char *path) {
417			GDir *dir = g_dir_open(path, 0, NULL);
418			if(dir) {
419			const char *name = g_dir_read_name(dir);
420			while(name) {
421			char *fullname = g_strdup_printf("%s/%s", path, name);
422			// printf("deleting %s\n", fullname);
423
424			if(g_file_test(fullname, G_FILE_TEST_IS_DIR))
425			rmdir_recursive(fullname);
426			else if(g_file_test(fullname, G_FILE_TEST_IS_REGULAR))
427			g_remove(fullname);
428
429			g_free(fullname);
430			name = g_dir_read_name(dir);
431			}
432
433			g_dir_close(dir);
434			}
435			g_rmdir(path);
436			}
437
438	harbaum	137	#ifdef ENABLE_BROWSER_INTERFACE
439			static void on_link_clicked(GtkButton *button, gpointer data) {
440			appdata_t appdata = (appdata_t)data;
441			char *url = g_object_get_data(G_OBJECT(button), "url");
442			if(url) browser_url(appdata, url);
443			}
444			#endif
445
446			/* a button containing a weblink */
447			GtkWidget link_button_attrib(appdata_t appdata, char str, char url,
448			int size, int strikethrough) {
449
450			#ifdef ENABLE_BROWSER_INTERFACE
451			if(url) {
452			GtkWidget *button = gtk_button_attrib(str, size, strikethrough);
453			g_object_set_data(G_OBJECT(button), "url", url);
454			gtk_signal_connect(GTK_OBJECT(button), "clicked",
455			(GtkSignalFunc)on_link_clicked, appdata);
456
457			return button;
458			}
459			#endif
460			return gtk_label_attrib(str, size, strikethrough);
461			}
462
463			#ifdef ENABLE_BROWSER_INTERFACE
464			static void on_link_id_clicked(GtkButton *button, gpointer data) {
465			appdata_t appdata = (appdata_t)data;
466
467			unsigned int id = (unsigned int)g_object_get_data(G_OBJECT(button), "id");
468			char *type = g_object_get_data(G_OBJECT(button), "type");
469
470			char *url = g_strdup_printf("http://www.geocaching.com/%s?id=%u",
471			type, id);
472
473			if(url) {
474			browser_url(appdata, url);
475			g_free(url);
476			}
477			}
478			#endif
479
480			GtkWidget link_button_by_id(appdata_t appdata, char *str,
481			const char *type, int id) {
482
483			#ifdef ENABLE_BROWSER_INTERFACE
484			if(id) {
485			GtkWidget *ref = gtk_button_new_with_label(str);
486			#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
487			// hildon_gtk_widget_set_theme_size(ref,
488			// (HILDON_SIZE_FINGER_HEIGHT \| HILDON_SIZE_AUTO_WIDTH));
489			#endif
490			g_object_set_data(G_OBJECT(ref), "id", (gpointer)id);
491			g_object_set_data(G_OBJECT(ref), "type", (gpointer)type);
492			gtk_signal_connect(GTK_OBJECT(ref), "clicked",
493			GTK_SIGNAL_FUNC(on_link_id_clicked), appdata);
494
495			return ref;
496			}
497			#endif
498			return gtk_label_new(str);
499			}
500
501	harbaum	138
502			GtkWidget link_icon_button_by_id(appdata_t appdata, GtkWidget *icon,
503			const char *type, int id) {
504
505			#ifdef ENABLE_BROWSER_INTERFACE
506			if(id) {
507			GtkWidget *ref = gtk_button_new();
508			gtk_button_set_image(GTK_BUTTON(ref), icon);
509
510			#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
511			// hildon_gtk_widget_set_theme_size(ref,
512			// (HILDON_SIZE_FINGER_HEIGHT \| HILDON_SIZE_AUTO_WIDTH));
513			#endif
514			g_object_set_data(G_OBJECT(ref), "id", (gpointer)id);
515			g_object_set_data(G_OBJECT(ref), "type", (gpointer)type);
516			gtk_signal_connect(GTK_OBJECT(ref), "clicked",
517			GTK_SIGNAL_FUNC(on_link_id_clicked), appdata);
518
519			return ref;
520			}
521			#endif
522			return icon;
523			}
524
525	harbaum	165	/* left aligned, word wrapped multiline widget */
526			GtkWidget simple_text_widget(char text) {
527			GtkWidget *label = gtk_label_new(text);
528
529			gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
530			gtk_label_set_line_wrap_mode(GTK_LABEL(label), PANGO_WRAP_WORD);
531			gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
532
533			return label;
534			}