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/* simple.c
* Copyright (C) 2017 Red Hat, Inc
* Author: Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <gtk/gtk.h>
static GtkWidget *_margin;
static GtkWidget *_align;
static GtkWidget *_xalign;
static GtkWidget *_yalign;
static void
highlight_at_mark (GtkTextBuffer *buffer,
GtkTextMark *mark,
gboolean on)
{
GtkTextIter iter, iter2;
gtk_text_buffer_get_iter_at_mark (buffer, &iter, mark);
iter2 = iter;
gtk_text_iter_forward_line (&iter2);
if (on)
gtk_text_buffer_apply_tag_by_name (buffer, "hihi", &iter, &iter2);
else
gtk_text_buffer_remove_tag_by_name (buffer, "hihi", &iter, &iter2);
}
static void
go_forward_or_back (GtkButton *button,
GtkTextView *tv,
gboolean forward)
{
GtkTextBuffer *buffer;
GtkTextMark *mark;
GtkTextIter iter;
gboolean found;
buffer = gtk_text_view_get_buffer (tv);
mark = gtk_text_buffer_get_mark (buffer, "mimi");
highlight_at_mark (buffer, mark, FALSE);
gtk_text_buffer_get_iter_at_mark (buffer, &iter, mark);
if (forward)
found = gtk_text_iter_forward_search (&iter, "\n-----", 0, &iter, NULL, NULL);
else
found = gtk_text_iter_backward_search (&iter, "\n-----", 0, &iter, NULL, NULL);
if (found)
{
double margin;
gboolean use_align;
double xalign, yalign;
gtk_text_iter_forward_char (&iter);
gtk_text_buffer_move_mark (buffer, mark, &iter);
highlight_at_mark (buffer, mark, TRUE);
margin = gtk_spin_button_get_value (GTK_SPIN_BUTTON (_margin));
use_align = gtk_check_button_get_active (GTK_CHECK_BUTTON (_align));
xalign = gtk_spin_button_get_value (GTK_SPIN_BUTTON (_xalign));
yalign = gtk_spin_button_get_value (GTK_SPIN_BUTTON (_yalign));
gtk_text_view_scroll_to_mark (tv, mark, margin, use_align, xalign, yalign);
}
else
{
if (forward)
gtk_text_buffer_get_end_iter (buffer, &iter);
else
gtk_text_buffer_get_start_iter (buffer, &iter);
gtk_text_buffer_move_mark (buffer, mark, &iter);
gtk_widget_error_bell (GTK_WIDGET (button));
}
}
static void
go_forward (GtkButton *button,
GtkTextView *tv)
{
go_forward_or_back (button, tv, TRUE);
}
static void
go_back (GtkButton *button,
GtkTextView *tv)
{
go_forward_or_back (button, tv, FALSE);
}
int
main (int argc, char *argv[])
{
GtkWidget *window, *box;
GtkWidget *sw, *tv;
GtkWidget *button, *box2;
GtkTextBuffer *buffer;
GtkTextIter iter;
GtkTextTag *tag;
GdkRGBA bg;
gtk_init ();
window = gtk_window_new ();
gtk_window_set_default_size (GTK_WINDOW (window), 400, 600);
box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
tv = gtk_text_view_new ();
gtk_text_view_set_left_margin (GTK_TEXT_VIEW (tv), 10);
gtk_text_view_set_right_margin (GTK_TEXT_VIEW (tv), 10);
gtk_text_view_set_top_margin (GTK_TEXT_VIEW (tv), 10);
gtk_text_view_set_bottom_margin (GTK_TEXT_VIEW (tv), 10);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
if (argc > 1)
{
char *contents;
gsize size;
if (g_file_get_contents (argv[1], &contents, &size, NULL))
gtk_text_buffer_set_text (buffer, contents, size);
}
gtk_text_buffer_get_start_iter (buffer, &iter);
gtk_text_buffer_create_mark (buffer, "mimi", &iter, TRUE);
tag = gtk_text_tag_new ("hihi");
bg.red = 0;
bg.green = 0;
bg.blue = 1;
bg.alpha = 0.3;
g_object_set (tag, "background-rgba", &bg, NULL);
gtk_text_tag_table_add (gtk_text_buffer_get_tag_table (buffer), tag);
sw = gtk_scrolled_window_new ();
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), tv);
gtk_widget_set_hexpand (sw, TRUE);
gtk_widget_set_vexpand (sw, TRUE);
gtk_box_append (GTK_BOX (box), sw);
box2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
gtk_box_append (GTK_BOX (box), box2);
button = gtk_button_new_with_label ("Forward");
g_signal_connect (button, "clicked", G_CALLBACK (go_forward), tv);
gtk_box_append (GTK_BOX (box2), button);
button = gtk_button_new_with_label ("Back");
g_signal_connect (button, "clicked", G_CALLBACK (go_back), tv);
gtk_box_append (GTK_BOX (box2), button);
box2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
gtk_box_append (GTK_BOX (box), box2);
gtk_box_append (GTK_BOX (box2), gtk_label_new ("Margin:"));
_margin = gtk_spin_button_new_with_range (0, 0.5, 0.1);
gtk_box_append (GTK_BOX (box2), _margin);
box2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
gtk_box_append (GTK_BOX (box), box2);
gtk_box_append (GTK_BOX (box2), gtk_label_new ("Align:"));
_align = gtk_check_button_new ();
gtk_box_append (GTK_BOX (box2), _align);
_xalign = gtk_spin_button_new_with_range (0, 1, 0.1);
gtk_box_append (GTK_BOX (box2), _xalign);
_yalign = gtk_spin_button_new_with_range (0, 1, 0.1);
gtk_box_append (GTK_BOX (box2), _yalign);
gtk_window_set_child (GTK_WINDOW (window), box);
gtk_window_present (GTK_WINDOW (window));
while (1)
g_main_context_iteration (NULL, TRUE);
return 0;
}
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