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1 | /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */ | |
2 | /* | |
3 | * Viking - GPS data editor | |
4 | * Copyright (C) 2014, Rob Norris <rw_norris@hotmail.com> | |
5 | * Copyright 2006-2012 Enrico Tröger <enrico(dot)troeger(at)uvena(dot)de> | |
6 | * Copyright 2006-2012 Nick Treleaven <nick(dot)treleaven(at)btinternet(dot)com> | |
7 | * Copyright 2011-2012 Matthew Brush <mbrush(at)codebrainz(dot)ca> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | */ | |
23 | /* | |
24 | * Ideally dependencies should just be on Gtk, | |
25 | * see vikutils for things that further depend on other Viking types | |
26 | * see utils for things only depend on Glib | |
27 | */ | |
28 | #ifdef HAVE_CONFIG_H | |
29 | #include "config.h" | |
30 | #endif | |
31 | ||
32 | #include <glib/gstdio.h> | |
33 | #include <glib/gi18n.h> | |
34 | #include <glib/gprintf.h> | |
35 | ||
36 | #include "util.h" | |
37 | #include "dialog.h" | |
38 | #include "settings.h" | |
39 | ||
40 | #ifdef WINDOWS | |
41 | #include <windows.h> | |
42 | #endif | |
43 | ||
44 | ||
45 | #ifndef WINDOWS | |
46 | static gboolean spawn_command_line_async(const gchar * cmd, | |
47 | const gchar * arg) | |
48 | { | |
49 | gchar *cmdline = NULL; | |
50 | gboolean status; | |
51 | ||
52 | cmdline = g_strdup_printf("%s '%s'", cmd, arg); | |
53 | g_debug("Running: %s", cmdline); | |
54 | ||
55 | status = g_spawn_command_line_async(cmdline, NULL); | |
56 | ||
57 | g_free(cmdline); | |
58 | ||
59 | return status; | |
60 | } | |
61 | #endif | |
62 | ||
63 | ||
64 | // Annoyingly gtk_show_uri() doesn't work so resort to ShellExecute method | |
65 | // (non working at least in our Windows build with GTK+2.24.10 on Windows 7) | |
66 | ||
67 | void open_url(GtkWindow *parent, const gchar * url) | |
68 | { | |
69 | #ifdef WINDOWS | |
70 | ShellExecute(NULL, NULL, (char *) url, NULL, ".\\", 0); | |
71 | #else | |
72 | gboolean use_browser = FALSE; | |
73 | if ( a_settings_get_boolean ( "use_env_browser", &use_browser ) ) { | |
74 | const gchar *browser = g_getenv("BROWSER"); | |
75 | if (browser == NULL || browser[0] == '\0') { | |
76 | browser = "firefox"; | |
77 | } | |
78 | if (spawn_command_line_async(browser, url)) { | |
79 | return; | |
80 | } | |
81 | else | |
82 | g_warning("Failed to run: %s on %s", browser, url); | |
83 | } | |
84 | else { | |
85 | GError *error = NULL; | |
86 | gtk_show_uri ( gtk_widget_get_screen (GTK_WIDGET(parent)), url, GDK_CURRENT_TIME, &error ); | |
87 | if ( error ) { | |
88 | a_dialog_error_msg_extra ( parent, _("Could not launch web browser. %s"), error->message ); | |
89 | g_error_free ( error ); | |
90 | } | |
91 | } | |
92 | #endif | |
93 | } | |
94 | ||
95 | void new_email(GtkWindow *parent, const gchar * address) | |
96 | { | |
97 | gchar *uri = g_strdup_printf("mailto:%s", address); | |
98 | GError *error = NULL; | |
99 | gtk_show_uri ( gtk_widget_get_screen (GTK_WIDGET(parent)), uri, GDK_CURRENT_TIME, &error ); | |
100 | if ( error ) { | |
101 | a_dialog_error_msg_extra ( parent, _("Could not create new email. %s"), error->message ); | |
102 | g_error_free ( error ); | |
103 | } | |
104 | /* | |
105 | #ifdef WINDOWS | |
106 | ShellExecute(NULL, NULL, (char *) uri, NULL, ".\\", 0); | |
107 | #else | |
108 | if (!spawn_command_line_async("xdg-email", uri)) | |
109 | a_dialog_error_msg ( parent, _("Could not create new email.") ); | |
110 | #endif | |
111 | */ | |
112 | g_free(uri); | |
113 | uri = NULL; | |
114 | } | |
115 | ||
116 | /** Creates a @c GtkButton with custom text and a stock image similar to | |
117 | * @c gtk_button_new_from_stock(). | |
118 | * @param stock_id A @c GTK_STOCK_NAME string. | |
119 | * @param text Button label text, can include mnemonics. | |
120 | * @return The new @c GtkButton. | |
121 | */ | |
122 | GtkWidget *ui_button_new_with_image(const gchar *stock_id, const gchar *text) | |
123 | { | |
124 | GtkWidget *image, *button; | |
125 | ||
126 | button = gtk_button_new_with_mnemonic(text); | |
127 | gtk_widget_show(button); | |
128 | image = gtk_image_new_from_stock(stock_id, GTK_ICON_SIZE_BUTTON); | |
129 | gtk_button_set_image(GTK_BUTTON(button), image); | |
130 | // note: image is shown by gtk | |
131 | return button; | |
132 | } | |
133 | ||
134 | /** Reads an integer from the GTK default settings registry | |
135 | * (see http://library.gnome.org/devel/gtk/stable/GtkSettings.html). | |
136 | * @param property_name The property to read. | |
137 | * @param default_value The default value in case the value could not be read. | |
138 | * @return The value for the property if it exists, otherwise the @a default_value. | |
139 | */ | |
140 | gint ui_get_gtk_settings_integer(const gchar *property_name, gint default_value) | |
141 | { | |
142 | if (g_object_class_find_property(G_OBJECT_GET_CLASS(G_OBJECT( | |
143 | gtk_settings_get_default())), property_name)) | |
144 | { | |
145 | gint value; | |
146 | g_object_get(G_OBJECT(gtk_settings_get_default()), property_name, &value, NULL); | |
147 | return value; | |
148 | } | |
149 | else | |
150 | return default_value; | |
151 | } | |
152 | ||
153 | ||
154 | /** Returns a widget from a name in a component, usually created by Glade. | |
155 | * Call it with the toplevel widget in the component (i.e. a window/dialog), | |
156 | * or alternatively any widget in the component, and the name of the widget | |
157 | * you want returned. | |
158 | * @param widget Widget with the @a widget_name property set. | |
159 | * @param widget_name Name to lookup. | |
160 | * @return The widget found. | |
161 | * @see ui_hookup_widget(). | |
162 | * | |
163 | */ | |
164 | GtkWidget *ui_lookup_widget(GtkWidget *widget, const gchar *widget_name) | |
165 | { | |
166 | GtkWidget *parent, *found_widget; | |
167 | ||
168 | g_return_val_if_fail(widget != NULL, NULL); | |
169 | g_return_val_if_fail(widget_name != NULL, NULL); | |
170 | ||
171 | for (;;) | |
172 | { | |
173 | if (GTK_IS_MENU(widget)) | |
174 | parent = gtk_menu_get_attach_widget(GTK_MENU(widget)); | |
175 | else | |
176 | parent = gtk_widget_get_parent(widget); | |
177 | if (parent == NULL) | |
178 | parent = (GtkWidget*) g_object_get_data(G_OBJECT(widget), "GladeParentKey"); | |
179 | if (parent == NULL) | |
180 | break; | |
181 | widget = parent; | |
182 | } | |
183 | ||
184 | found_widget = (GtkWidget*) g_object_get_data(G_OBJECT(widget), widget_name); | |
185 | if (G_UNLIKELY(found_widget == NULL)) | |
186 | g_warning("Widget not found: %s", widget_name); | |
187 | return found_widget; | |
188 | } | |
189 | ||
190 | /** | |
191 | * Returns a label widget that is made selectable (i.e. the user can copy the text) | |
192 | * @param text String to display - maybe NULL | |
193 | * @return The label widget | |
194 | */ | |
195 | GtkWidget* ui_label_new_selectable ( const gchar* text ) | |
196 | { | |
197 | GtkWidget *widget = gtk_label_new ( text ); | |
198 | gtk_label_set_selectable ( GTK_LABEL(widget), TRUE ); | |
199 | return widget; | |
200 | } | |
201 | ||
202 | /** | |
203 | * Apply the alpha value to the specified pixbuf | |
204 | */ | |
205 | GdkPixbuf *ui_pixbuf_set_alpha ( GdkPixbuf *pixbuf, guint8 alpha ) | |
206 | { | |
207 | guchar *pixels; | |
208 | gint width, height, iii, jjj; | |
209 | ||
210 | if ( ! gdk_pixbuf_get_has_alpha ( pixbuf ) ) | |
211 | { | |
212 | GdkPixbuf *tmp = gdk_pixbuf_add_alpha(pixbuf,FALSE,0,0,0); | |
213 | g_object_unref(G_OBJECT(pixbuf)); | |
214 | pixbuf = tmp; | |
215 | if ( !pixbuf ) | |
216 | return NULL; | |
217 | } | |
218 | ||
219 | pixels = gdk_pixbuf_get_pixels(pixbuf); | |
220 | width = gdk_pixbuf_get_width(pixbuf); | |
221 | height = gdk_pixbuf_get_height(pixbuf); | |
222 | ||
223 | /* r,g,b,a,r,g,b,a.... */ | |
224 | for (iii = 0; iii < width; iii++) for (jjj = 0; jjj < height; jjj++) | |
225 | { | |
226 | pixels += 3; | |
227 | if ( *pixels != 0 ) | |
228 | *pixels = alpha; | |
229 | pixels++; | |
230 | } | |
231 | return pixbuf; | |
232 | } | |
233 | ||
234 | ||
235 | /** | |
236 | * Reduce the alpha value of the specified pixbuf by alpha / 255 | |
237 | */ | |
238 | GdkPixbuf *ui_pixbuf_scale_alpha ( GdkPixbuf *pixbuf, guint8 alpha ) | |
239 | { | |
240 | guchar *pixels; | |
241 | gint width, height, iii, jjj; | |
242 | ||
243 | if ( ! gdk_pixbuf_get_has_alpha ( pixbuf ) ) | |
244 | { | |
245 | GdkPixbuf *tmp = gdk_pixbuf_add_alpha(pixbuf,FALSE,0,0,0); | |
246 | g_object_unref(G_OBJECT(pixbuf)); | |
247 | pixbuf = tmp; | |
248 | if ( !pixbuf ) | |
249 | return NULL; | |
250 | } | |
251 | ||
252 | pixels = gdk_pixbuf_get_pixels(pixbuf); | |
253 | width = gdk_pixbuf_get_width(pixbuf); | |
254 | height = gdk_pixbuf_get_height(pixbuf); | |
255 | ||
256 | /* r,g,b,a,r,g,b,a.... */ | |
257 | for (iii = 0; iii < width; iii++) for (jjj = 0; jjj < height; jjj++) | |
258 | { | |
259 | pixels += 3; | |
260 | if ( *pixels != 0 ) | |
261 | *pixels = (guint8)(((guint16)*pixels * (guint16)alpha) / 255); | |
262 | pixels++; | |
263 | } | |
264 | return pixbuf; | |
265 | } | |
266 | ||
267 | ||
268 | ||
269 | /** | |
270 | * | |
271 | */ | |
272 | void ui_add_recent_file ( const gchar *filename ) | |
273 | { | |
274 | if ( filename ) { | |
275 | GtkRecentManager *manager = gtk_recent_manager_get_default(); | |
276 | GFile *file = g_file_new_for_commandline_arg ( filename ); | |
277 | gchar *uri = g_file_get_uri ( file ); | |
278 | if ( uri && manager ) | |
279 | gtk_recent_manager_add_item ( manager, uri ); | |
280 | g_object_unref( file ); | |
281 | g_free (uri); | |
282 | } | |
283 | } | |
284 | ||
285 | /** | |
286 | * Clear the entry text if the specified icon is pressed | |
287 | */ | |
288 | static void ui_icon_clear_entry ( GtkEntry *entry, | |
289 | GtkEntryIconPosition position, | |
290 | GdkEventButton *event, | |
291 | gpointer data ) | |
292 | { | |
293 | if ( position == GPOINTER_TO_INT(data) ) | |
294 | gtk_entry_set_text ( entry, "" ); | |
295 | } | |
296 | ||
297 | static void | |
298 | text_changed_cb (GtkEntry *entry, | |
299 | GParamSpec *pspec, | |
300 | gpointer data) | |
301 | { | |
302 | if ( data ) { | |
303 | gboolean has_text = gtk_entry_get_text_length(entry) > 0; | |
304 | gtk_entry_set_icon_sensitive ( entry, GPOINTER_TO_INT(data), has_text ); | |
305 | } | |
306 | } | |
307 | ||
308 | /** | |
309 | * Create an entry field with an icon to clear the entry | |
310 | * | |
311 | * Ideal for entries used for getting user entered transitory data, | |
312 | * so it is easy to delete the text and start again. | |
313 | */ | |
314 | GtkWidget *ui_entry_new ( const gchar *str, GtkEntryIconPosition position ) | |
315 | { | |
316 | GtkWidget *entry = gtk_entry_new(); | |
317 | if ( str ) | |
318 | gtk_entry_set_text ( GTK_ENTRY(entry), str ); | |
319 | gtk_entry_set_icon_from_stock ( GTK_ENTRY(entry), position, GTK_STOCK_CLEAR ); | |
320 | #if GTK_CHECK_VERSION (2,20,0) | |
321 | text_changed_cb ( GTK_ENTRY(entry), NULL, GINT_TO_POINTER(position) ); | |
322 | g_signal_connect ( entry, "notify::text", G_CALLBACK(text_changed_cb), GINT_TO_POINTER(position) ); | |
323 | #endif | |
324 | g_signal_connect ( entry, "icon-release", G_CALLBACK(ui_icon_clear_entry), GINT_TO_POINTER(position) ); | |
325 | return entry; | |
326 | } | |
327 | ||
328 | /** | |
329 | * Create a spinbutton with an icon to clear the entry | |
330 | * | |
331 | * Ideal for entries used for getting user entered transitory data, | |
332 | * so it is easy to delete the number and start again. | |
333 | */ | |
334 | GtkWidget *ui_spin_button_new ( GtkAdjustment *adjustment, | |
335 | gdouble climb_rate, | |
336 | guint digits ) | |
337 | { | |
338 | GtkWidget *spin = gtk_spin_button_new ( adjustment, climb_rate, digits ); | |
339 | gtk_entry_set_icon_from_stock ( GTK_ENTRY(spin), GTK_ENTRY_ICON_PRIMARY, GTK_STOCK_CLEAR ); | |
340 | g_signal_connect ( spin, "icon-release", G_CALLBACK(ui_icon_clear_entry), GINT_TO_POINTER(GTK_ENTRY_ICON_PRIMARY) ); | |
341 | return spin; | |
342 | } |