diff options
Diffstat (limited to 'libempathy-gtk/gossip-ui-utils.c')
| -rw-r--r-- | libempathy-gtk/gossip-ui-utils.c | 1360 |
1 files changed, 1360 insertions, 0 deletions
diff --git a/libempathy-gtk/gossip-ui-utils.c b/libempathy-gtk/gossip-ui-utils.c new file mode 100644 index 000000000..e902012f1 --- /dev/null +++ b/libempathy-gtk/gossip-ui-utils.c @@ -0,0 +1,1360 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* + * Copyright (C) 2002-2007 Imendio AB + * + * This program 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 2 of the + * License, or (at your option) any later version. + * + * This program 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 this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Authors: Mikael Hallendal <micke@imendio.com> + * Richard Hult <richard@imendio.com> + * Martyn Russell <martyn@imendio.com> + * + * Part of this file is copied from GtkSourceView (gtksourceiter.c): + * Paolo Maggi + * Jeroen Zwartepoorte + */ + +#include <string.h> + +#include <glib/gi18n.h> +#include <gtk/gtk.h> +#include <glade/glade.h> +#include <libgnome/libgnome.h> + +#include <libmissioncontrol/mc-profile.h> + +#include <libempathy/gossip-paths.h> +#include <libempathy/gossip-debug.h> + +#include "gossip-ui-utils.h" +#include "gossip-stock.h" + +struct SizeData { + gint width; + gint height; + gboolean preserve_aspect_ratio; +}; + +static GladeXML * +get_glade_file (const gchar *filename, + const gchar *root, + const gchar *domain, + const gchar *first_required_widget, + va_list args) +{ + gchar *path; + GladeXML *gui; + const char *name; + GtkWidget **widget_ptr; + + path = gossip_paths_get_glade_path (filename); + gui = glade_xml_new (path, root, domain); + g_free (path); + + if (!gui) { + g_warning ("Couldn't find necessary glade file '%s'", filename); + return NULL; + } + + for (name = first_required_widget; name; name = va_arg (args, char *)) { + widget_ptr = va_arg (args, void *); + + *widget_ptr = glade_xml_get_widget (gui, name); + + if (!*widget_ptr) { + g_warning ("Glade file '%s' is missing widget '%s'.", + filename, name); + continue; + } + } + + return gui; +} + +void +gossip_glade_get_file_simple (const gchar *filename, + const gchar *root, + const gchar *domain, + const gchar *first_required_widget, ...) +{ + va_list args; + GladeXML *gui; + + va_start (args, first_required_widget); + + gui = get_glade_file (filename, + root, + domain, + first_required_widget, + args); + + va_end (args); + + if (!gui) { + return; + } + + g_object_unref (gui); +} + +GladeXML * +gossip_glade_get_file (const gchar *filename, + const gchar *root, + const gchar *domain, + const gchar *first_required_widget, ...) +{ + va_list args; + GladeXML *gui; + + va_start (args, first_required_widget); + + gui = get_glade_file (filename, + root, + domain, + first_required_widget, + args); + + va_end (args); + + if (!gui) { + return NULL; + } + + return gui; +} + +void +gossip_glade_connect (GladeXML *gui, + gpointer user_data, + gchar *first_widget, ...) +{ + va_list args; + const gchar *name; + const gchar *signal; + GtkWidget *widget; + gpointer *callback; + + va_start (args, first_widget); + + for (name = first_widget; name; name = va_arg (args, char *)) { + signal = va_arg (args, void *); + callback = va_arg (args, void *); + + widget = glade_xml_get_widget (gui, name); + if (!widget) { + g_warning ("Glade file is missing widget '%s', aborting", + name); + continue; + } + + g_signal_connect (widget, + signal, + G_CALLBACK (callback), + user_data); + } + + va_end (args); +} + +void +gossip_glade_setup_size_group (GladeXML *gui, + GtkSizeGroupMode mode, + gchar *first_widget, ...) +{ + va_list args; + GtkWidget *widget; + GtkSizeGroup *size_group; + const gchar *name; + + va_start (args, first_widget); + + size_group = gtk_size_group_new (mode); + + for (name = first_widget; name; name = va_arg (args, char *)) { + widget = glade_xml_get_widget (gui, name); + if (!widget) { + g_warning ("Glade file is missing widget '%s'", name); + continue; + } + + gtk_size_group_add_widget (size_group, widget); + } + + g_object_unref (size_group); + + va_end (args); +} + +GdkPixbuf * +gossip_pixbuf_from_smiley (GossipSmiley type, + GtkIconSize icon_size) +{ + GtkIconTheme *theme; + GdkPixbuf *pixbuf = NULL; + GError *error = NULL; + gint w, h; + gint size; + const gchar *icon_id; + + theme = gtk_icon_theme_get_default (); + + if (!gtk_icon_size_lookup (icon_size, &w, &h)) { + size = 16; + } else { + size = (w + h) / 2; + } + + switch (type) { + case GOSSIP_SMILEY_NORMAL: /* :) */ + icon_id = "stock_smiley-1"; + break; + case GOSSIP_SMILEY_WINK: /* ;) */ + icon_id = "stock_smiley-3"; + break; + case GOSSIP_SMILEY_BIGEYE: /* =) */ + icon_id = "stock_smiley-2"; + break; + case GOSSIP_SMILEY_NOSE: /* :-) */ + icon_id = "stock_smiley-7"; + break; + case GOSSIP_SMILEY_CRY: /* :'( */ + icon_id = "stock_smiley-11"; + break; + case GOSSIP_SMILEY_SAD: /* :( */ + icon_id = "stock_smiley-4"; + break; + case GOSSIP_SMILEY_SCEPTICAL: /* :/ */ + icon_id = "stock_smiley-9"; + break; + case GOSSIP_SMILEY_BIGSMILE: /* :D */ + icon_id = "stock_smiley-6"; + break; + case GOSSIP_SMILEY_INDIFFERENT: /* :| */ + icon_id = "stock_smiley-8"; + break; + case GOSSIP_SMILEY_TOUNGE: /* :p */ + icon_id = "stock_smiley-10"; + break; + case GOSSIP_SMILEY_SHOCKED: /* :o */ + icon_id = "stock_smiley-5"; + break; + case GOSSIP_SMILEY_COOL: /* 8) */ + icon_id = "stock_smiley-15"; + break; + case GOSSIP_SMILEY_SORRY: /* *| */ + icon_id = "stock_smiley-12"; + break; + case GOSSIP_SMILEY_KISS: /* :* */ + icon_id = "stock_smiley-13"; + break; + case GOSSIP_SMILEY_SHUTUP: /* :# */ + icon_id = "stock_smiley-14"; + break; + case GOSSIP_SMILEY_YAWN: /* |O */ + icon_id = ""; + break; + case GOSSIP_SMILEY_CONFUSED: /* :$ */ + icon_id = "stock_smiley-17"; + break; + case GOSSIP_SMILEY_ANGEL: /* O) */ + icon_id = "stock_smiley-18"; + break; + case GOSSIP_SMILEY_OOOH: /* :x */ + icon_id = "stock_smiley-19"; + break; + case GOSSIP_SMILEY_LOOKAWAY: /* *) */ + icon_id = "stock_smiley-20"; + break; + case GOSSIP_SMILEY_BLUSH: /* *S */ + icon_id = "stock_smiley-23"; + break; + case GOSSIP_SMILEY_COOLBIGSMILE: /* 8D */ + icon_id = "stock_smiley-25"; + break; + case GOSSIP_SMILEY_ANGRY: /* :@ */ + icon_id = "stock_smiley-16"; + break; + case GOSSIP_SMILEY_BOSS: /* @) */ + icon_id = "stock_smiley-21"; + break; + case GOSSIP_SMILEY_MONKEY: /* #) */ + icon_id = "stock_smiley-22"; + break; + case GOSSIP_SMILEY_SILLY: /* O) */ + icon_id = "stock_smiley-24"; + break; + case GOSSIP_SMILEY_SICK: /* +o( */ + icon_id = "stock_smiley-26"; + break; + + default: + g_assert_not_reached (); + icon_id = NULL; + } + + pixbuf = gtk_icon_theme_load_icon (theme, + icon_id, /* icon name */ + size, /* size */ + 0, /* flags */ + &error); + + return pixbuf; +} + +GdkPixbuf * +gossip_pixbuf_from_profile (McProfile *profile, + GtkIconSize icon_size) +{ + GtkIconTheme *theme; + gint size = 48; + gint w, h; + const gchar *icon_id = NULL; + GError *error = NULL; + + theme = gtk_icon_theme_get_default (); + + if (gtk_icon_size_lookup (icon_size, &w, &h)) { + size = (w + h) / 2; + } + + icon_id = mc_profile_get_icon_name (profile); + + theme = gtk_icon_theme_get_default (); + return gtk_icon_theme_load_icon (theme, + icon_id, /* Icon name */ + size, /* Size */ + 0, /* Flags */ + &error); +} + +GdkPixbuf * +gossip_pixbuf_from_account (McAccount *account, + GtkIconSize icon_size) +{ + McProfile *profile; + + profile = mc_account_get_profile (account); + + return gossip_pixbuf_from_profile (profile, icon_size); +} + +GdkPixbuf * +gossip_pixbuf_for_presence_state (GossipPresenceState state) +{ + const gchar *stock = NULL; + + switch (state) { + case GOSSIP_PRESENCE_STATE_AVAILABLE: + stock = GOSSIP_STOCK_AVAILABLE; + break; + case GOSSIP_PRESENCE_STATE_BUSY: + stock = GOSSIP_STOCK_BUSY; + break; + case GOSSIP_PRESENCE_STATE_AWAY: + stock = GOSSIP_STOCK_AWAY; + break; + case GOSSIP_PRESENCE_STATE_EXT_AWAY: + stock = GOSSIP_STOCK_EXT_AWAY; + break; + case GOSSIP_PRESENCE_STATE_HIDDEN: + case GOSSIP_PRESENCE_STATE_UNAVAILABLE: + stock = GOSSIP_STOCK_OFFLINE; + break; + } + + return gossip_stock_render (stock, GTK_ICON_SIZE_MENU); +} + +GdkPixbuf * +gossip_pixbuf_for_presence (GossipPresence *presence) +{ + GossipPresenceState state; + + g_return_val_if_fail (GOSSIP_IS_PRESENCE (presence), + gossip_pixbuf_offline ()); + + state = gossip_presence_get_state (presence); + + return gossip_pixbuf_for_presence_state (state); +} + +GdkPixbuf * +gossip_pixbuf_for_contact (GossipContact *contact) +{ + GossipPresence *presence; + GossipSubscription subscription; + + g_return_val_if_fail (GOSSIP_IS_CONTACT (contact), + gossip_pixbuf_offline ()); + + presence = gossip_contact_get_active_presence (contact); + + if (presence) { + return gossip_pixbuf_for_presence (presence); + } + + subscription = gossip_contact_get_subscription (contact); + + if (subscription != GOSSIP_SUBSCRIPTION_BOTH && + subscription != GOSSIP_SUBSCRIPTION_TO) { + return gossip_stock_render (GOSSIP_STOCK_PENDING, + GTK_ICON_SIZE_MENU); + } + + return gossip_pixbuf_offline (); +} + +GdkPixbuf * +gossip_pixbuf_offline (void) +{ + return gossip_stock_render (GOSSIP_STOCK_OFFLINE, + GTK_ICON_SIZE_MENU); +} + +GdkPixbuf * +gossip_pixbuf_avatar_from_contact (GossipContact *contact) +{ + GdkPixbuf *pixbuf; + GdkPixbufLoader *loader; + GossipAvatar *avatar; + GError *error = NULL; + + g_return_val_if_fail (GOSSIP_IS_CONTACT (contact), NULL); + + avatar = gossip_contact_get_avatar (contact); + if (!avatar) { + return NULL; + } + + loader = gdk_pixbuf_loader_new (); + + if (!gdk_pixbuf_loader_write (loader, avatar->data, avatar->len, &error)) { + g_warning ("Couldn't write avatar image:%p with " + "length:%" G_GSIZE_FORMAT " to pixbuf loader: %s", + avatar->data, avatar->len, error->message); + g_error_free (error); + return NULL; + } + + gdk_pixbuf_loader_close (loader, NULL); + + pixbuf = gdk_pixbuf_loader_get_pixbuf (loader); + + g_object_ref (pixbuf); + g_object_unref (loader); + + return pixbuf; +} + +static void +pixbuf_from_avatar_size_prepared_cb (GdkPixbufLoader *loader, + int width, + int height, + struct SizeData *data) +{ + g_return_if_fail (width > 0 && height > 0); + + if (data->preserve_aspect_ratio && (data->width > 0 || data->height > 0)) { + if (width < data->width && height < data->height) { + width = width; + height = height; + } + + if (data->width < 0) { + width = width * (double) data->height / (gdouble) height; + height = data->height; + } else if (data->height < 0) { + height = height * (double) data->width / (double) width; + width = data->width; + } else if ((double) height * (double) data->width > + (double) width * (double) data->height) { + width = 0.5 + (double) width * (double) data->height / (double) height; + height = data->height; + } else { + height = 0.5 + (double) height * (double) data->width / (double) width; + width = data->width; + } + } else { + if (data->width > 0) { + width = data->width; + } + + if (data->height > 0) { + height = data->height; + } + } + + gdk_pixbuf_loader_set_size (loader, width, height); +} + +GdkPixbuf * +gossip_pixbuf_from_avatar_scaled (GossipAvatar *avatar, + gint width, + gint height) +{ + GdkPixbuf *pixbuf; + GdkPixbufLoader *loader; + struct SizeData data; + GError *error = NULL; + + if (!avatar) { + return NULL; + } + + data.width = width; + data.height = height; + data.preserve_aspect_ratio = TRUE; + + loader = gdk_pixbuf_loader_new (); + + g_signal_connect (loader, "size-prepared", + G_CALLBACK (pixbuf_from_avatar_size_prepared_cb), + &data); + + if (!gdk_pixbuf_loader_write (loader, avatar->data, avatar->len, &error)) { + g_warning ("Couldn't write avatar image:%p with " + "length:%" G_GSIZE_FORMAT " to pixbuf loader: %s", + avatar->data, avatar->len, error->message); + g_error_free (error); + return NULL; + } + + gdk_pixbuf_loader_close (loader, NULL); + + pixbuf = gdk_pixbuf_loader_get_pixbuf (loader); + + g_object_ref (pixbuf); + g_object_unref (loader); + + return pixbuf; +} + +GdkPixbuf * +gossip_pixbuf_avatar_from_contact_scaled (GossipContact *contact, + gint width, + gint height) +{ + GossipAvatar *avatar; + + g_return_val_if_fail (GOSSIP_IS_CONTACT (contact), NULL); + + avatar = gossip_contact_get_avatar (contact); + + return gossip_pixbuf_from_avatar_scaled (avatar, width, height); +} +/* Stolen from GtkSourceView, hence the weird intendation. Please keep it like + * that to make it easier to apply changes from the original code. + */ +#define GTK_TEXT_UNKNOWN_CHAR 0xFFFC + +/* this function acts like g_utf8_offset_to_pointer() except that if it finds a + * decomposable character it consumes the decomposition length from the given + * offset. So it's useful when the offset was calculated for the normalized + * version of str, but we need a pointer to str itself. */ +static const gchar * +pointer_from_offset_skipping_decomp (const gchar *str, gint offset) +{ + gchar *casefold, *normal; + const gchar *p, *q; + + p = str; + while (offset > 0) + { + q = g_utf8_next_char (p); + casefold = g_utf8_casefold (p, q - p); + normal = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD); + offset -= g_utf8_strlen (normal, -1); + g_free (casefold); + g_free (normal); + p = q; + } + return p; +} + +static const gchar * +g_utf8_strcasestr (const gchar *haystack, const gchar *needle) +{ + gsize needle_len; + gsize haystack_len; + const gchar *ret = NULL; + gchar *p; + gchar *casefold; + gchar *caseless_haystack; + gint i; + + g_return_val_if_fail (haystack != NULL, NULL); + g_return_val_if_fail (needle != NULL, NULL); + + casefold = g_utf8_casefold (haystack, -1); + caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD); + g_free (casefold); + + needle_len = g_utf8_strlen (needle, -1); + haystack_len = g_utf8_strlen (caseless_haystack, -1); + + if (needle_len == 0) + { + ret = (gchar *)haystack; + goto finally_1; + } + + if (haystack_len < needle_len) + { + ret = NULL; + goto finally_1; + } + + p = (gchar*)caseless_haystack; + needle_len = strlen (needle); + i = 0; + + while (*p) + { + if ((strncmp (p, needle, needle_len) == 0)) + { + ret = pointer_from_offset_skipping_decomp (haystack, i); + goto finally_1; + } + + p = g_utf8_next_char (p); + i++; + } + +finally_1: + g_free (caseless_haystack); + + return ret; +} + +static gboolean +g_utf8_caselessnmatch (const char *s1, const char *s2, + gssize n1, gssize n2) +{ + gchar *casefold; + gchar *normalized_s1; + gchar *normalized_s2; + gint len_s1; + gint len_s2; + gboolean ret = FALSE; + + g_return_val_if_fail (s1 != NULL, FALSE); + g_return_val_if_fail (s2 != NULL, FALSE); + g_return_val_if_fail (n1 > 0, FALSE); + g_return_val_if_fail (n2 > 0, FALSE); + + casefold = g_utf8_casefold (s1, n1); + normalized_s1 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD); + g_free (casefold); + + casefold = g_utf8_casefold (s2, n2); + normalized_s2 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD); + g_free (casefold); + + len_s1 = strlen (normalized_s1); + len_s2 = strlen (normalized_s2); + + if (len_s1 < len_s2) + goto finally_2; + + ret = (strncmp (normalized_s1, normalized_s2, len_s2) == 0); + +finally_2: + g_free (normalized_s1); + g_free (normalized_s2); + + return ret; +} + +static void +forward_chars_with_skipping (GtkTextIter *iter, + gint count, + gboolean skip_invisible, + gboolean skip_nontext, + gboolean skip_decomp) +{ + gint i; + + g_return_if_fail (count >= 0); + + i = count; + + while (i > 0) + { + gboolean ignored = FALSE; + + /* minimal workaround to avoid the infinite loop of bug #168247. + * It doesn't fix the problemjust the symptom... + */ + if (gtk_text_iter_is_end (iter)) + return; + + if (skip_nontext && gtk_text_iter_get_char (iter) == GTK_TEXT_UNKNOWN_CHAR) + ignored = TRUE; + + if (!ignored && skip_invisible && + /* _gtk_text_btree_char_is_invisible (iter)*/ FALSE) + ignored = TRUE; + + if (!ignored && skip_decomp) + { + /* being UTF8 correct sucks; this accounts for extra + offsets coming from canonical decompositions of + UTF8 characters (e.g. accented characters) which + g_utf8_normalize() performs */ + gchar *normal; + gchar buffer[6]; + gint buffer_len; + + buffer_len = g_unichar_to_utf8 (gtk_text_iter_get_char (iter), buffer); + normal = g_utf8_normalize (buffer, buffer_len, G_NORMALIZE_NFD); + i -= (g_utf8_strlen (normal, -1) - 1); + g_free (normal); + } + + gtk_text_iter_forward_char (iter); + + if (!ignored) + --i; + } +} + +static gboolean +lines_match (const GtkTextIter *start, + const gchar **lines, + gboolean visible_only, + gboolean slice, + GtkTextIter *match_start, + GtkTextIter *match_end) +{ + GtkTextIter next; + gchar *line_text; + const gchar *found; + gint offset; + + if (*lines == NULL || **lines == '\0') + { + if (match_start) + *match_start = *start; + if (match_end) + *match_end = *start; + return TRUE; + } + + next = *start; + gtk_text_iter_forward_line (&next); + + /* No more text in buffer, but *lines is nonempty */ + if (gtk_text_iter_equal (start, &next)) + return FALSE; + + if (slice) + { + if (visible_only) + line_text = gtk_text_iter_get_visible_slice (start, &next); + else + line_text = gtk_text_iter_get_slice (start, &next); + } + else + { + if (visible_only) + line_text = gtk_text_iter_get_visible_text (start, &next); + else + line_text = gtk_text_iter_get_text (start, &next); + } + + if (match_start) /* if this is the first line we're matching */ + { + found = g_utf8_strcasestr (line_text, *lines); + } + else + { + /* If it's not the first line, we have to match from the + * start of the line. + */ + if (g_utf8_caselessnmatch (line_text, *lines, strlen (line_text), + strlen (*lines))) + found = line_text; + else + found = NULL; + } + + if (found == NULL) + { + g_free (line_text); + return FALSE; + } + + /* Get offset to start of search string */ + offset = g_utf8_strlen (line_text, found - line_text); + + next = *start; + + /* If match start needs to be returned, set it to the + * start of the search string. + */ + forward_chars_with_skipping (&next, offset, visible_only, !slice, FALSE); + if (match_start) + { + *match_start = next; + } + + /* Go to end of search string */ + forward_chars_with_skipping (&next, g_utf8_strlen (*lines, -1), visible_only, !slice, TRUE); + + g_free (line_text); + + ++lines; + + if (match_end) + *match_end = next; + + /* pass NULL for match_start, since we don't need to find the + * start again. + */ + return lines_match (&next, lines, visible_only, slice, NULL, match_end); +} + +/* strsplit () that retains the delimiter as part of the string. */ +static gchar ** +strbreakup (const char *string, + const char *delimiter, + gint max_tokens) +{ + GSList *string_list = NULL, *slist; + gchar **str_array, *s, *casefold, *new_string; + guint i, n = 1; + + g_return_val_if_fail (string != NULL, NULL); + g_return_val_if_fail (delimiter != NULL, NULL); + + if (max_tokens < 1) + max_tokens = G_MAXINT; + + s = strstr (string, delimiter); + if (s) + { + guint delimiter_len = strlen (delimiter); + + do + { + guint len; + + len = s - string + delimiter_len; + new_string = g_new (gchar, len + 1); + strncpy (new_string, string, len); + new_string[len] = 0; + casefold = g_utf8_casefold (new_string, -1); + g_free (new_string); + new_string = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD); + g_free (casefold); + string_list = g_slist_prepend (string_list, new_string); + n++; + string = s + delimiter_len; + s = strstr (string, delimiter); + } while (--max_tokens && s); + } + + if (*string) + { + n++; + casefold = g_utf8_casefold (string, -1); + new_string = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD); + g_free (casefold); + string_list = g_slist_prepend (string_list, new_string); + } + + str_array = g_new (gchar*, n); + + i = n - 1; + + str_array[i--] = NULL; + for (slist = string_list; slist; slist = slist->next) + str_array[i--] = slist->data; + + g_slist_free (string_list); + + return str_array; +} + +gboolean +gossip_text_iter_forward_search (const GtkTextIter *iter, + const gchar *str, + GtkTextIter *match_start, + GtkTextIter *match_end, + const GtkTextIter *limit) +{ + gchar **lines = NULL; + GtkTextIter match; + gboolean retval = FALSE; + GtkTextIter search; + gboolean visible_only; + gboolean slice; + + g_return_val_if_fail (iter != NULL, FALSE); + g_return_val_if_fail (str != NULL, FALSE); + + if (limit && gtk_text_iter_compare (iter, limit) >= 0) + return FALSE; + + if (*str == '\0') { + /* If we can move one char, return the empty string there */ + match = *iter; + + if (gtk_text_iter_forward_char (&match)) { + if (limit && gtk_text_iter_equal (&match, limit)) { + return FALSE; + } + + if (match_start) { + *match_start = match; + } + if (match_end) { + *match_end = match; + } + return TRUE; + } else { + return FALSE; + } + } + + visible_only = TRUE; + slice = FALSE; + + /* locate all lines */ + lines = strbreakup (str, "\n", -1); + + search = *iter; + + do { + /* This loop has an inefficient worst-case, where + * gtk_text_iter_get_text () is called repeatedly on + * a single line. + */ + GtkTextIter end; + + if (limit && gtk_text_iter_compare (&search, limit) >= 0) { + break; + } + + if (lines_match (&search, (const gchar**)lines, + visible_only, slice, &match, &end)) { + if (limit == NULL || + (limit && gtk_text_iter_compare (&end, limit) <= 0)) { + retval = TRUE; + + if (match_start) { + *match_start = match; + } + if (match_end) { + *match_end = end; + } + } + break; + } + } while (gtk_text_iter_forward_line (&search)); + + g_strfreev ((gchar**)lines); + + return retval; +} + +static const gchar * +g_utf8_strrcasestr (const gchar *haystack, const gchar *needle) +{ + gsize needle_len; + gsize haystack_len; + const gchar *ret = NULL; + gchar *p; + gchar *casefold; + gchar *caseless_haystack; + gint i; + + g_return_val_if_fail (haystack != NULL, NULL); + g_return_val_if_fail (needle != NULL, NULL); + + casefold = g_utf8_casefold (haystack, -1); + caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD); + g_free (casefold); + + needle_len = g_utf8_strlen (needle, -1); + haystack_len = g_utf8_strlen (caseless_haystack, -1); + + if (needle_len == 0) + { + ret = (gchar *)haystack; + goto finally_1; + } + + if (haystack_len < needle_len) + { + ret = NULL; + goto finally_1; + } + + i = haystack_len - needle_len; + p = g_utf8_offset_to_pointer (caseless_haystack, i); + needle_len = strlen (needle); + + while (p >= caseless_haystack) + { + if (strncmp (p, needle, needle_len) == 0) + { + ret = pointer_from_offset_skipping_decomp (haystack, i); + goto finally_1; + } + + p = g_utf8_prev_char (p); + i--; + } + +finally_1: + g_free (caseless_haystack); + + return ret; +} + +static gboolean +backward_lines_match (const GtkTextIter *start, + const gchar **lines, + gboolean visible_only, + gboolean slice, + GtkTextIter *match_start, + GtkTextIter *match_end) +{ + GtkTextIter line, next; + gchar *line_text; + const gchar *found; + gint offset; + + if (*lines == NULL || **lines == '\0') + { + if (match_start) + *match_start = *start; + if (match_end) + *match_end = *start; + return TRUE; + } + + line = next = *start; + if (gtk_text_iter_get_line_offset (&next) == 0) + { + if (!gtk_text_iter_backward_line (&next)) + return FALSE; + } + else + gtk_text_iter_set_line_offset (&next, 0); + + if (slice) + { + if (visible_only) + line_text = gtk_text_iter_get_visible_slice (&next, &line); + else + line_text = gtk_text_iter_get_slice (&next, &line); + } + else + { + if (visible_only) + line_text = gtk_text_iter_get_visible_text (&next, &line); + else + line_text = gtk_text_iter_get_text (&next, &line); + } + + if (match_start) /* if this is the first line we're matching */ + { + found = g_utf8_strrcasestr (line_text, *lines); + } + else + { + /* If it's not the first line, we have to match from the + * start of the line. + */ + if (g_utf8_caselessnmatch (line_text, *lines, strlen (line_text), + strlen (*lines))) + found = line_text; + else + found = NULL; + } + + if (found == NULL) + { + g_free (line_text); + return FALSE; + } + + /* Get offset to start of search string */ + offset = g_utf8_strlen (line_text, found - line_text); + + forward_chars_with_skipping (&next, offset, visible_only, !slice, FALSE); + + /* If match start needs to be returned, set it to the + * start of the search string. + */ + if (match_start) + { + *match_start = next; + } + + /* Go to end of search string */ + forward_chars_with_skipping (&next, g_utf8_strlen (*lines, -1), visible_only, !slice, TRUE); + + g_free (line_text); + + ++lines; + + if (match_end) + *match_end = next; + + /* try to match the rest of the lines forward, passing NULL + * for match_start so lines_match will try to match the entire + * line */ + return lines_match (&next, lines, visible_only, + slice, NULL, match_end); +} + +gboolean +gossip_text_iter_backward_search (const GtkTextIter *iter, + const gchar *str, + GtkTextIter *match_start, + GtkTextIter *match_end, + const GtkTextIter *limit) +{ + gchar **lines = NULL; + GtkTextIter match; + gboolean retval = FALSE; + GtkTextIter search; + gboolean visible_only; + gboolean slice; + + g_return_val_if_fail (iter != NULL, FALSE); + g_return_val_if_fail (str != NULL, FALSE); + + if (limit && gtk_text_iter_compare (iter, limit) <= 0) + return FALSE; + + if (*str == '\0') + { + /* If we can move one char, return the empty string there */ + match = *iter; + + if (gtk_text_iter_backward_char (&match)) + { + if (limit && gtk_text_iter_equal (&match, limit)) + return FALSE; + + if (match_start) + *match_start = match; + if (match_end) + *match_end = match; + return TRUE; + } + else + { + return FALSE; + } + } + + visible_only = TRUE; + slice = TRUE; + + /* locate all lines */ + lines = strbreakup (str, "\n", -1); + + search = *iter; + + while (TRUE) + { + /* This loop has an inefficient worst-case, where + * gtk_text_iter_get_text () is called repeatedly on + * a single line. + */ + GtkTextIter end; + + if (limit && gtk_text_iter_compare (&search, limit) <= 0) + break; + + if (backward_lines_match (&search, (const gchar**)lines, + visible_only, slice, &match, &end)) + { + if (limit == NULL || (limit && + gtk_text_iter_compare (&end, limit) > 0)) + { + retval = TRUE; + + if (match_start) + *match_start = match; + if (match_end) + *match_end = end; + } + break; + } + + if (gtk_text_iter_get_line_offset (&search) == 0) + { + if (!gtk_text_iter_backward_line (&search)) + break; + } + else + { + gtk_text_iter_set_line_offset (&search, 0); + } + } + + g_strfreev ((gchar**)lines); + + return retval; +} + +static gboolean +window_get_is_on_current_workspace (GtkWindow *window) +{ + GdkWindow *gdk_window; + + gdk_window = GTK_WIDGET (window)->window; + if (gdk_window) { + return !(gdk_window_get_state (gdk_window) & + GDK_WINDOW_STATE_ICONIFIED); + } else { + return FALSE; + } +} + +/* Checks if the window is visible as in visible on the current workspace. */ +gboolean +gossip_window_get_is_visible (GtkWindow *window) +{ + gboolean visible; + + g_return_val_if_fail (window != NULL, FALSE); + + g_object_get (window, + "visible", &visible, + NULL); + + return visible && window_get_is_on_current_workspace (window); +} + +/* Takes care of moving the window to the current workspace. */ +void +gossip_window_present (GtkWindow *window, + gboolean steal_focus) +{ + gboolean visible; + gboolean on_current; + guint32 timestamp; + + g_return_if_fail (window != NULL); + + /* There are three cases: hidden, visible, visible on another + * workspace. + */ + + g_object_get (window, + "visible", &visible, + NULL); + + on_current = window_get_is_on_current_workspace (window); + + if (visible && !on_current) { + /* Hide it so present brings it to the current workspace. */ + gtk_widget_hide (GTK_WIDGET (window)); + } + + timestamp = gtk_get_current_event_time (); + if (steal_focus && timestamp != GDK_CURRENT_TIME) { + gtk_window_present_with_time (window, timestamp); + } else { + gtk_window_present (window); + } +} + +/* The URL opening code can't handle schemeless strings, so we try to be + * smart and add http if there is no scheme or doesn't look like a mail + * address. This should work in most cases, and let us click on strings + * like "www.gnome.org". + */ +static gchar * +fixup_url (const gchar *url) +{ + gchar *real_url; + + if (!g_str_has_prefix (url, "http://") && + !strstr (url, ":/") && + !strstr (url, "@")) { + real_url = g_strdup_printf ("http://%s", url); + } else { + real_url = g_strdup (url); + } + + return real_url; +} + +void +gossip_url_show (const char *url) +{ + gchar *real_url; + GError *error = NULL; + + real_url = fixup_url (url); + gnome_url_show (real_url, &error); + if (error) { + g_warning ("Couldn't show URL:'%s'", real_url); + g_error_free (error); + } + + g_free (real_url); +} + +static void +link_button_hook (GtkLinkButton *button, + const gchar *link, + gpointer user_data) +{ + gossip_url_show (link); +} + +GtkWidget * +gossip_link_button_new (const gchar *url, + const gchar *title) +{ + static gboolean hook = FALSE; + + if (!hook) { + hook = TRUE; + gtk_link_button_set_uri_hook (link_button_hook, NULL, NULL); + } + + return gtk_link_button_new_with_label (url, title); +} + +/* FIXME: Do this in a proper way at some point, probably in GTK+? */ +void +gossip_window_set_default_icon_name (const gchar *name) +{ + gtk_window_set_default_icon_name (name); +} + +void +gossip_toggle_button_set_state_quietly (GtkWidget *widget, + GCallback callback, + gpointer user_data, + gboolean active) +{ + g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget)); + + g_signal_handlers_block_by_func (widget, callback, user_data); + g_object_set (widget, "active", active, NULL); + g_signal_handlers_unblock_by_func (widget, callback, user_data); +} + |