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app: add GimpTextBuffer, a GtkTextBuffer subclass

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Pull all text buffer utility functions as methods and use
GimpTextBuffer all over the place instead of GtkTextBuffer.
Some actually usefuly features coming soon...
This commit is contained in:
Michael Natterer
2010-02-25 17:41:10 +01:00
parent 18f3be6bd3
commit 0b4bdc5613
18 changed files with 427 additions and 231 deletions
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134
app/widgets/gimpwidgets-utils.c
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@ -22,22 +22,7 @@
#undef GSEAL_ENABLE
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <glib/gstdio.h>
#include <glib.h>
#ifdef G_OS_WIN32
#include "libgimpbase/gimpwin32-io.h"
#endif
#include <gtk/gtk.h>
@ -887,125 +872,6 @@ gimp_window_set_transient_for (GtkWindow *window,
#endif
}
gboolean
gimp_text_buffer_load (GtkTextBuffer *buffer,
const gchar *filename,
GError **error)
{
FILE *file;
gchar buf[2048];
gint remaining = 0;
GtkTextIter iter;
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
g_return_val_if_fail (filename != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
file = g_fopen (filename, "r");
if (! file)
{
g_set_error_literal (error, G_FILE_ERROR,
g_file_error_from_errno (errno),
g_strerror (errno));
return FALSE;
}
gtk_text_buffer_set_text (buffer, "", 0);
gtk_text_buffer_get_iter_at_offset (buffer, &iter, 0);
while (! feof (file))
{
const char *leftover;
gint count;
gint to_read = sizeof (buf) - remaining - 1;
count = fread (buf + remaining, 1, to_read, file);
buf[count + remaining] = '\0';
g_utf8_validate (buf, count + remaining, &leftover);
gtk_text_buffer_insert (buffer, &iter, buf, leftover - buf);
gtk_text_buffer_get_iter_at_offset (buffer, &iter, -1);
remaining = (buf + remaining + count) - leftover;
g_memmove (buf, leftover, remaining);
if (remaining > 6 || count < to_read)
break;
}
if (remaining)
g_message (_("Invalid UTF-8 data in file '%s'."),
gimp_filename_to_utf8 (filename));
fclose (file);
return TRUE;
}
gboolean
gimp_text_buffer_save (GtkTextBuffer *buffer,
const gchar *filename,
gboolean selection_only,
GError **error)
{
GtkTextIter start_iter;
GtkTextIter end_iter;
gint fd;
gchar *text_contents;
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
g_return_val_if_fail (filename != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
fd = g_open (filename, O_WRONLY | O_CREAT | O_APPEND, 0666);
if (fd == -1)
{
g_set_error_literal (error, G_FILE_ERROR,
g_file_error_from_errno (errno),
g_strerror (errno));
return FALSE;
}
if (selection_only)
gtk_text_buffer_get_selection_bounds (buffer, &start_iter, &end_iter);
else
gtk_text_buffer_get_bounds (buffer, &start_iter, &end_iter);
text_contents = gtk_text_buffer_get_text (buffer,
&start_iter, &end_iter, TRUE);
if (text_contents)
{
gint text_length = strlen (text_contents);
if (text_length > 0)
{
gint bytes_written;
bytes_written = write (fd, text_contents, text_length);
if (bytes_written != text_length)
{
g_free (text_contents);
close (fd);
g_set_error_literal (error, G_FILE_ERROR,
g_file_error_from_errno (errno),
g_strerror (errno));
return FALSE;
}
}
g_free (text_contents);
}
close (fd);
return TRUE;
}
void
gimp_toggle_button_set_visible (GtkToggleButton *toggle,
GtkWidget *widget)