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"

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