gtk2/examples/application9/exampleappwin.c

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#include "exampleapp.h"
#include "exampleappwin.h"
#include <gtk/gtk.h>
struct _ExampleAppWindow
{
GtkApplicationWindow parent;
};
struct _ExampleAppWindowClass
{
GtkApplicationWindowClass parent_class;
};
typedef struct _ExampleAppWindowPrivate ExampleAppWindowPrivate;
struct _ExampleAppWindowPrivate
{
GSettings *settings;
GtkWidget *stack;
GtkWidget *search;
GtkWidget *searchbar;
GtkWidget *searchentry;
GtkWidget *gears;
GtkWidget *sidebar;
GtkWidget *words;
GtkWidget *lines;
GtkWidget *lines_label;
};
G_DEFINE_TYPE_WITH_PRIVATE(ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW);
static void
search_text_changed (GtkEntry *entry)
{
ExampleAppWindow *win;
ExampleAppWindowPrivate *priv;
const gchar *text;
GtkWidget *tab;
GtkWidget *view;
GtkTextBuffer *buffer;
GtkTextIter start, match_start, match_end;
text = gtk_entry_get_text (entry);
if (text[0] == '\0')
return;
win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry)));
priv = example_app_window_get_instance_private (win);
tab = gtk_stack_get_visible_child (GTK_STACK (priv->stack));
view = gtk_bin_get_child (GTK_BIN (tab));
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
/* Very simple-minded search implementation */
gtk_text_buffer_get_start_iter (buffer, &start);
if (gtk_text_iter_forward_search (&start, text, GTK_TEXT_SEARCH_CASE_INSENSITIVE,
&match_start, &match_end, NULL))
{
gtk_text_buffer_select_range (buffer, &match_start, &match_end);
gtk_text_view_scroll_to_iter (GTK_TEXT_VIEW (view), &match_start,
0.0, FALSE, 0.0, 0.0);
}
}
static void
find_word (GtkButton *button,
ExampleAppWindow *win)
{
ExampleAppWindowPrivate *priv;
const gchar *word;
priv = example_app_window_get_instance_private (win);
word = gtk_button_get_label (button);
gtk_entry_set_text (GTK_ENTRY (priv->searchentry), word);
}
static void
update_words (ExampleAppWindow *win)
{
ExampleAppWindowPrivate *priv;
GHashTable *strings;
GHashTableIter iter;
GtkWidget *tab, *view, *row;
GtkTextBuffer *buffer;
GtkTextIter start, end;
GList *children, *l;
gchar *word, *key;
priv = example_app_window_get_instance_private (win);
tab = gtk_stack_get_visible_child (GTK_STACK (priv->stack));
if (tab == NULL)
return;
view = gtk_bin_get_child (GTK_BIN (tab));
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
strings = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
gtk_text_buffer_get_start_iter (buffer, &start);
while (!gtk_text_iter_is_end (&start))
{
while (!gtk_text_iter_starts_word (&start))
{
if (!gtk_text_iter_forward_char (&start))
goto done;
}
end = start;
if (!gtk_text_iter_forward_word_end (&end))
goto done;
word = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
g_hash_table_add (strings, g_utf8_strdown (word, -1));
g_free (word);
start = end;
}
done:
children = gtk_container_get_children (GTK_CONTAINER (priv->words));
for (l = children; l; l = l->next)
gtk_container_remove (GTK_CONTAINER (priv->words), GTK_WIDGET (l->data));
g_list_free (children);
g_hash_table_iter_init (&iter, strings);
while (g_hash_table_iter_next (&iter, (gpointer *)&key, NULL))
{
row = gtk_button_new_with_label (key);
g_signal_connect (row, "clicked",
G_CALLBACK (find_word), win);
gtk_widget_show (row);
gtk_container_add (GTK_CONTAINER (priv->words), row);
}
g_hash_table_unref (strings);
}
static void
update_lines (ExampleAppWindow *win)
{
ExampleAppWindowPrivate *priv;
GtkWidget *tab, *view;
GtkTextBuffer *buffer;
GtkTextIter iter;
int count;
gchar *lines;
priv = example_app_window_get_instance_private (win);
tab = gtk_stack_get_visible_child (GTK_STACK (priv->stack));
if (tab == NULL)
return;
view = gtk_bin_get_child (GTK_BIN (tab));
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
count = 0;
gtk_text_buffer_get_start_iter (buffer, &iter);
while (!gtk_text_iter_is_end (&iter))
{
count++;
if (!gtk_text_iter_forward_line (&iter))
break;
}
lines = g_strdup_printf ("%d", count);
gtk_label_set_text (GTK_LABEL (priv->lines), lines);
g_free (lines);
}
static void
visible_child_changed (GObject *stack,
GParamSpec *pspec)
{
ExampleAppWindow *win;
ExampleAppWindowPrivate *priv;
if (gtk_widget_in_destruction (GTK_WIDGET (stack)))
return;
win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (stack)));
priv = example_app_window_get_instance_private (win);
gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (priv->searchbar), FALSE);
update_words (win);
update_lines (win);
}
static void
words_changed (GObject *sidebar,
GParamSpec *pspec,
ExampleAppWindow *win)
{
update_words (win);
}
static void
example_app_window_init (ExampleAppWindow *win)
{
ExampleAppWindowPrivate *priv;
GtkBuilder *builder;
GMenuModel *menu;
GAction *action;
priv = example_app_window_get_instance_private (win);
gtk_widget_init_template (GTK_WIDGET (win));
priv->settings = g_settings_new ("org.gtk.exampleapp");
g_settings_bind (priv->settings, "transition",
priv->stack, "transition-type",
G_SETTINGS_BIND_DEFAULT);
g_settings_bind (priv->settings, "show-words",
priv->sidebar, "reveal-child",
G_SETTINGS_BIND_DEFAULT);
g_object_bind_property (priv->search, "active",
priv->searchbar, "search-mode-enabled",
G_BINDING_BIDIRECTIONAL);
g_signal_connect (priv->sidebar, "notify::reveal-child",
G_CALLBACK (words_changed), win);
builder = gtk_builder_new_from_resource ("/org/gtk/exampleapp/gears-menu.ui");
menu = G_MENU_MODEL (gtk_builder_get_object (builder, "menu"));
gtk_menu_button_set_menu_model (GTK_MENU_BUTTON (priv->gears), menu);
g_object_unref (builder);
action = g_settings_create_action (priv->settings, "show-words");
g_action_map_add_action (G_ACTION_MAP (win), action);
g_object_unref (action);
action = (GAction*) g_property_action_new ("show-lines", priv->lines, "visible");
g_action_map_add_action (G_ACTION_MAP (win), action);
g_object_unref (action);
g_object_bind_property (priv->lines, "visible",
priv->lines_label, "visible",
G_BINDING_DEFAULT);
}
static void
example_app_window_dispose (GObject *object)
{
ExampleAppWindow *win;
ExampleAppWindowPrivate *priv;
win = EXAMPLE_APP_WINDOW (object);
priv = example_app_window_get_instance_private (win);
g_clear_object (&priv->settings);
G_OBJECT_CLASS (example_app_window_parent_class)->dispose (object);
}
static void
example_app_window_class_init (ExampleAppWindowClass *class)
{
G_OBJECT_CLASS (class)->dispose = example_app_window_dispose;
gtk_widget_class_set_template_from_resource (GTK_WIDGET_CLASS (class),
"/org/gtk/exampleapp/window.ui");
gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (class), ExampleAppWindow, stack);
gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (class), ExampleAppWindow, search);
gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (class), ExampleAppWindow, searchbar);
gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (class), ExampleAppWindow, searchentry);
gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (class), ExampleAppWindow, gears);
gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (class), ExampleAppWindow, words);
gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (class), ExampleAppWindow, sidebar);
gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (class), ExampleAppWindow, lines);
gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (class), ExampleAppWindow, lines_label);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), search_text_changed);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), visible_child_changed);
}
ExampleAppWindow *
example_app_window_new (ExampleApp *app)
{
return g_object_new (EXAMPLE_APP_WINDOW_TYPE, "application", app, NULL);
}
void
example_app_window_open (ExampleAppWindow *win,
GFile *file)
{
ExampleAppWindowPrivate *priv;
gchar *basename;
GtkWidget *scrolled, *view;
gchar *contents;
gsize length;
GtkTextBuffer *buffer;
GtkTextTag *tag;
GtkTextIter start_iter, end_iter;
priv = example_app_window_get_instance_private (win);
basename = g_file_get_basename (file);
scrolled = gtk_scrolled_window_new (NULL, NULL);
gtk_widget_show (scrolled);
gtk_widget_set_hexpand (scrolled, TRUE);
gtk_widget_set_vexpand (scrolled, TRUE);
view = gtk_text_view_new ();
gtk_text_view_set_editable (GTK_TEXT_VIEW (view), FALSE);
gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (view), FALSE);
gtk_widget_show (view);
gtk_container_add (GTK_CONTAINER (scrolled), view);
gtk_stack_add_titled (GTK_STACK (priv->stack), scrolled, basename, basename);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
if (g_file_load_contents (file, NULL, &contents, &length, NULL, NULL))
{
gtk_text_buffer_set_text (buffer, contents, length);
g_free (contents);
}
tag = gtk_text_buffer_create_tag (buffer, NULL, NULL);
g_settings_bind (priv->settings, "font",
tag, "font",
G_SETTINGS_BIND_DEFAULT);
gtk_text_buffer_get_start_iter (buffer, &start_iter);
gtk_text_buffer_get_end_iter (buffer, &end_iter);
gtk_text_buffer_apply_tag (buffer, tag, &start_iter, &end_iter);
g_free (basename);
gtk_widget_set_sensitive (priv->search, TRUE);
update_words (win);
update_lines (win);
}