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gtk/tests/testfilechooser.c
Matthias Clasen 0b0c6a6477 testfilechooser: Test the preview again 
There is code in there to show a preview, use it.
2014-10-19 20:03:58 -04:00

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/* testfilechooser.c
* Copyright (C) 2003 Red Hat, Inc.
* Author: Owen Taylor
*
* 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 "config.h"
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <time.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <gtk/gtk.h>
#ifdef G_OS_WIN32
# include <io.h>
# define localtime_r(t,b) *(b) = *localtime (t)
# ifndef S_ISREG
# define S_ISREG(m) ((m) & _S_IFREG)
# endif
#endif
static GtkWidget *preview_label;
static GtkWidget *preview_image;
static GtkFileChooserAction action;
static void
print_current_folder (GtkFileChooser *chooser)
{
gchar *uri;
uri = gtk_file_chooser_get_current_folder_uri (chooser);
g_print ("Current folder changed :\n %s\n", uri ? uri : "(null)");
g_free (uri);
}
static void
print_selected (GtkFileChooser *chooser)
{
GSList *uris = gtk_file_chooser_get_uris (chooser);
GSList *tmp_list;
g_print ("Selection changed :\n");
for (tmp_list = uris; tmp_list; tmp_list = tmp_list->next)
{
gchar *uri = tmp_list->data;
g_print (" %s\n", uri);
g_free (uri);
}
g_print ("\n");
g_slist_free (uris);
}
static void
response_cb (GtkDialog *dialog,
gint response_id)
{
if (response_id == GTK_RESPONSE_OK)
{
GSList *list;
list = gtk_file_chooser_get_uris (GTK_FILE_CHOOSER (dialog));
if (list)
{
GSList *l;
g_print ("Selected files:\n");
for (l = list; l; l = l->next)
{
g_print ("%s\n", (char *) l->data);
g_free (l->data);
}
g_slist_free (list);
}
else
g_print ("No selected files\n");
}
else
g_print ("Dialog was closed\n");
gtk_main_quit ();
}
static gboolean
no_backup_files_filter (const GtkFileFilterInfo *filter_info,
gpointer data)
{
gsize len = filter_info->display_name ? strlen (filter_info->display_name) : 0;
if (len > 0 && filter_info->display_name[len - 1] == '~')
return 0;
else
return 1;
}
static void
filter_changed (GtkFileChooserDialog *dialog,
gpointer data)
{
g_print ("file filter changed\n");
}
static char *
format_time (time_t t)
{
gchar buf[128];
struct tm tm_buf;
time_t now = time (NULL);
const char *format;
if (abs (now - t) < 24*60*60)
format = "%X";
else
format = "%x";
localtime_r (&t, &tm_buf);
if (strftime (buf, sizeof (buf), format, &tm_buf) == 0)
return g_strdup ("<unknown>");
else
return g_strdup (buf);
}
static char *
format_size (gint64 size)
{
if (size < (gint64)1024)
return g_strdup_printf ("%d bytes", (gint)size);
else if (size < (gint64)1024*1024)
return g_strdup_printf ("%.1f K", size / (1024.));
else if (size < (gint64)1024*1024*1024)
return g_strdup_printf ("%.1f M", size / (1024.*1024.));
else
return g_strdup_printf ("%.1f G", size / (1024.*1024.*1024.));
}
#include <stdio.h>
#include <errno.h>
#define _(s) (s)
static void
size_prepared_cb (GdkPixbufLoader *loader,
int width,
int height,
int *data)
{
int des_width = data[0];
int des_height = data[1];
if (des_height >= height && des_width >= width) {
/* Nothing */
} else if ((double)height * des_width > (double)width * des_height) {
width = 0.5 + (double)width * des_height / (double)height;
height = des_height;
} else {
height = 0.5 + (double)height * des_width / (double)width;
width = des_width;
}
gdk_pixbuf_loader_set_size (loader, width, height);
}
GdkPixbuf *
my_new_from_file_at_size (const char *filename,
int width,
int height,
GError **error)
{
GdkPixbufLoader *loader;
GdkPixbuf *pixbuf;
int info[2];
struct stat st;
guchar buffer [4096];
int length;
FILE *f;
g_return_val_if_fail (filename != NULL, NULL);
g_return_val_if_fail (width > 0 && height > 0, NULL);
if (stat (filename, &st) != 0) {
int errsv = errno;
g_set_error (error,
G_FILE_ERROR,
g_file_error_from_errno (errsv),
_("Could not get information for file '%s': %s"),
filename, g_strerror (errsv));
return NULL;
}
if (!S_ISREG (st.st_mode))
return NULL;
f = fopen (filename, "rb");
if (!f) {
int errsv = errno;
g_set_error (error,
G_FILE_ERROR,
g_file_error_from_errno (errsv),
_("Failed to open file '%s': %s"),
filename, g_strerror (errsv));
return NULL;
}
loader = gdk_pixbuf_loader_new ();
#ifdef DONT_PRESERVE_ASPECT
gdk_pixbuf_loader_set_size (loader, width, height);
#else
info[0] = width;
info[1] = height;
g_signal_connect (loader, "size-prepared", G_CALLBACK (size_prepared_cb), info);
#endif
while (!feof (f)) {
length = fread (buffer, 1, sizeof (buffer), f);
if (length > 0)
if (!gdk_pixbuf_loader_write (loader, buffer, length, error)) {
gdk_pixbuf_loader_close (loader, NULL);
fclose (f);
g_object_unref (loader);
return NULL;
}
}
fclose (f);
g_assert (*error == NULL);
if (!gdk_pixbuf_loader_close (loader, error)) {
g_object_unref (loader);
return NULL;
}
pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
if (!pixbuf) {
g_object_unref (loader);
/* did the loader set an error? */
if (*error != NULL)
return NULL;
g_set_error (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_FAILED,
_("Failed to load image '%s': reason not known, probably a corrupt image file"),
filename);
return NULL;
}
g_object_ref (pixbuf);
g_object_unref (loader);
return pixbuf;
}
static void
update_preview_cb (GtkFileChooser *chooser)
{
gchar *filename = gtk_file_chooser_get_preview_filename (chooser);
gboolean have_preview = FALSE;
if (filename)
{
GdkPixbuf *pixbuf;
GError *error = NULL;
pixbuf = my_new_from_file_at_size (filename, 128, 128, &error);
if (pixbuf)
{
gtk_image_set_from_pixbuf (GTK_IMAGE (preview_image), pixbuf);
g_object_unref (pixbuf);
gtk_widget_show (preview_image);
gtk_widget_hide (preview_label);
have_preview = TRUE;
}
else
{
struct stat buf;
if (stat (filename, &buf) == 0)
{
gchar *preview_text;
gchar *size_str;
gchar *modified_time;
size_str = format_size (buf.st_size);
modified_time = format_time (buf.st_mtime);
preview_text = g_strdup_printf ("<i>Modified:</i>\t%s\n"
"<i>Size:</i>\t%s\n",
modified_time,
size_str);
gtk_label_set_markup (GTK_LABEL (preview_label), preview_text);
g_free (modified_time);
g_free (size_str);
g_free (preview_text);
gtk_widget_hide (preview_image);
gtk_widget_show (preview_label);
have_preview = TRUE;
}
}
g_free (filename);
if (error)
g_error_free (error);
}
gtk_file_chooser_set_preview_widget_active (chooser, have_preview);
}
static void
set_current_folder (GtkFileChooser *chooser,
const char *name)
{
if (!gtk_file_chooser_set_current_folder (chooser, name))
{
GtkWidget *dialog;
dialog = gtk_message_dialog_new (GTK_WINDOW (chooser),
GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"Could not set the folder to %s",
name);
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
}
static void
set_folder_nonexistent_cb (GtkButton *button,
GtkFileChooser *chooser)
{
set_current_folder (chooser, "/nonexistent");
}
static void
set_folder_existing_nonexistent_cb (GtkButton *button,
GtkFileChooser *chooser)
{
set_current_folder (chooser, "/usr/nonexistent");
}
static void
set_filename (GtkFileChooser *chooser,
const char *name)
{
if (!gtk_file_chooser_set_filename (chooser, name))
{
GtkWidget *dialog;
dialog = gtk_message_dialog_new (GTK_WINDOW (chooser),
GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"Could not select %s",
name);
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
}
static void
set_filename_nonexistent_cb (GtkButton *button,
GtkFileChooser *chooser)
{
set_filename (chooser, "/nonexistent");
}
static void
set_filename_existing_nonexistent_cb (GtkButton *button,
GtkFileChooser *chooser)
{
set_filename (chooser, "/usr/nonexistent");
}
static void
get_selection_cb (GtkButton *button,
GtkFileChooser *chooser)
{
GSList *selection;
selection = gtk_file_chooser_get_uris (chooser);
g_print ("Selection: ");
if (selection == NULL)
g_print ("empty\n");
else
{
GSList *l;
for (l = selection; l; l = l->next)
{
char *uri = l->data;
g_print ("%s\n", uri);
if (l->next)
g_print (" ");
}
}
g_slist_free_full (selection, g_free);
}
static void
get_current_name_cb (GtkButton *button,
GtkFileChooser *chooser)
{
char *name;
name = gtk_file_chooser_get_current_name (chooser);
g_print ("Current name: %s\n", name ? name : "NULL");
g_free (name);
}
static void
unmap_and_remap_cb (GtkButton *button,
GtkFileChooser *chooser)
{
gtk_widget_hide (GTK_WIDGET (chooser));
gtk_widget_show (GTK_WIDGET (chooser));
}
static void
kill_dependent (GtkWindow *win, GtkWidget *dep)
{
gtk_widget_destroy (dep);
g_object_unref (dep);
}
static void
notify_multiple_cb (GtkWidget *dialog,
GParamSpec *pspec,
GtkWidget *button)
{
gboolean multiple;
multiple = gtk_file_chooser_get_select_multiple (GTK_FILE_CHOOSER (dialog));
gtk_widget_set_sensitive (button, multiple);
}
static GtkFileChooserConfirmation
confirm_overwrite_cb (GtkFileChooser *chooser,
gpointer data)
{
GtkWidget *dialog;
GtkWidget *button;
int response;
GtkFileChooserConfirmation conf;
dialog = gtk_message_dialog_new (GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (chooser))),
GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_QUESTION,
GTK_BUTTONS_NONE,
"What do you want to do?");
button = gtk_button_new_with_label ("Use the stock confirmation dialog");
gtk_widget_show (button);
gtk_dialog_add_action_widget (GTK_DIALOG (dialog), button, 1);
button = gtk_button_new_with_label ("Type a new file name");
gtk_widget_show (button);
gtk_dialog_add_action_widget (GTK_DIALOG (dialog), button, 2);
button = gtk_button_new_with_label ("Accept the file name");
gtk_widget_show (button);
gtk_dialog_add_action_widget (GTK_DIALOG (dialog), button, 3);
response = gtk_dialog_run (GTK_DIALOG (dialog));
switch (response)
{
case 1:
conf = GTK_FILE_CHOOSER_CONFIRMATION_CONFIRM;
break;
case 3:
conf = GTK_FILE_CHOOSER_CONFIRMATION_ACCEPT_FILENAME;
break;
default:
conf = GTK_FILE_CHOOSER_CONFIRMATION_SELECT_AGAIN;
break;
}
gtk_widget_destroy (dialog);
return conf;
}
int
main (int argc, char **argv)
{
GtkWidget *control_window;
GtkWidget *vbbox;
GtkWidget *button;
GtkWidget *dialog;
GtkWidget *extra;
GtkFileFilter *filter;
GtkWidget *preview_vbox;
gboolean force_rtl = FALSE;
gboolean multiple = FALSE;
char *action_arg = NULL;
char *initial_filename = NULL;
char *initial_folder = NULL;
GError *error = NULL;
GOptionEntry options[] = {
{ "action", 'a', 0, G_OPTION_ARG_STRING, &action_arg, "Filechooser action", "ACTION" },
{ "multiple", 'm', 0, G_OPTION_ARG_NONE, &multiple, "Select-multiple", NULL },
{ "right-to-left", 'r', 0, G_OPTION_ARG_NONE, &force_rtl, "Force right-to-left layout.", NULL },
{ "initial-filename", 'f', 0, G_OPTION_ARG_FILENAME, &initial_filename, "Initial filename to select", "FILENAME" },
{ "initial-folder", 'F', 0, G_OPTION_ARG_FILENAME, &initial_folder, "Initial folder to show", "FILENAME" },
{ NULL }
};
if (!gtk_init_with_args (&argc, &argv, "", options, NULL, &error))
{
g_print ("Failed to parse args: %s\n", error->message);
g_error_free (error);
return 1;
}
if (initial_filename && initial_folder)
{
g_print ("Only one of --initial-filename and --initial-folder may be specified");
return 1;
}
if (force_rtl)
gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
action = GTK_FILE_CHOOSER_ACTION_OPEN;
if (action_arg != NULL)
{
if (! strcmp ("open", action_arg))
action = GTK_FILE_CHOOSER_ACTION_OPEN;
else if (! strcmp ("save", action_arg))
action = GTK_FILE_CHOOSER_ACTION_SAVE;
else if (! strcmp ("select_folder", action_arg))
action = GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER;
else if (! strcmp ("create_folder", action_arg))
action = GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER;
else
{
g_print ("--action must be one of \"open\", \"save\", \"select_folder\", \"create_folder\"\n");
return 1;
}
g_free (action_arg);
}
dialog = g_object_new (GTK_TYPE_FILE_CHOOSER_DIALOG,
"action", action,
"select-multiple", multiple,
NULL);
switch (action)
{
case GTK_FILE_CHOOSER_ACTION_OPEN:
case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
gtk_window_set_title (GTK_WINDOW (dialog), "Select a file");
gtk_dialog_add_buttons (GTK_DIALOG (dialog),
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_Open"), GTK_RESPONSE_OK,
NULL);
break;
case GTK_FILE_CHOOSER_ACTION_SAVE:
case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
gtk_window_set_title (GTK_WINDOW (dialog), "Save a file");
gtk_dialog_add_buttons (GTK_DIALOG (dialog),
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_Open"), GTK_RESPONSE_OK,
NULL);
break;
}
gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
g_signal_connect (dialog, "selection-changed",
G_CALLBACK (print_selected), NULL);
g_signal_connect (dialog, "current-folder-changed",
G_CALLBACK (print_current_folder), NULL);
g_signal_connect (dialog, "response",
G_CALLBACK (response_cb), NULL);
g_signal_connect (dialog, "confirm-overwrite",
G_CALLBACK (confirm_overwrite_cb), NULL);
/* Filters */
filter = gtk_file_filter_new ();
gtk_file_filter_set_name (filter, "All Files");
gtk_file_filter_add_pattern (filter, "*");
gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
filter = gtk_file_filter_new ();
gtk_file_filter_set_name (filter, "No backup files");
gtk_file_filter_add_custom (filter, GTK_FILE_FILTER_DISPLAY_NAME,
no_backup_files_filter, NULL, NULL);
gtk_file_filter_add_mime_type (filter, "image/png");
gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
filter = gtk_file_filter_new ();
gtk_file_filter_set_name (filter, "Starts with D");
gtk_file_filter_add_pattern (filter, "D*");
gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
g_signal_connect (dialog, "notify::filter",
G_CALLBACK (filter_changed), NULL);
/* Make this filter the default */
gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (dialog), filter);
filter = gtk_file_filter_new ();
gtk_file_filter_set_name (filter, "PNG and JPEG");
gtk_file_filter_add_mime_type (filter, "image/jpeg");
gtk_file_filter_add_mime_type (filter, "image/png");
gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
filter = gtk_file_filter_new ();
gtk_file_filter_set_name (filter, "Images");
gtk_file_filter_add_pixbuf_formats (filter);
gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
/* Preview widget */
/* THIS IS A TERRIBLE PREVIEW WIDGET, AND SHOULD NOT BE COPIED AT ALL.
*/
preview_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (dialog), preview_vbox);
preview_label = gtk_label_new (NULL);
gtk_box_pack_start (GTK_BOX (preview_vbox), preview_label, TRUE, TRUE, 0);
g_object_set (preview_label, "margin", 6, NULL);
preview_image = gtk_image_new ();
gtk_box_pack_start (GTK_BOX (preview_vbox), preview_image, TRUE, TRUE, 0);
g_object_set (preview_image, "margin", 6, NULL);
update_preview_cb (GTK_FILE_CHOOSER (dialog));
g_signal_connect (dialog, "update-preview",
G_CALLBACK (update_preview_cb), NULL);
/* Extra widget */
extra = gtk_check_button_new_with_mnemonic ("Lar_t whoever asks about this button");
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (extra), TRUE);
gtk_file_chooser_set_extra_widget (GTK_FILE_CHOOSER (dialog), extra);
/* Shortcuts */
gtk_file_chooser_add_shortcut_folder_uri (GTK_FILE_CHOOSER (dialog),
"file:///usr/share/pixmaps",
NULL);
gtk_file_chooser_add_shortcut_folder (GTK_FILE_CHOOSER (dialog),
g_get_user_special_dir (G_USER_DIRECTORY_MUSIC),
NULL);
/* Initial filename or folder */
if (initial_filename)
set_filename (GTK_FILE_CHOOSER (dialog), initial_filename);
if (initial_folder)
set_current_folder (GTK_FILE_CHOOSER (dialog), initial_folder);
/* show_all() to reveal bugs in composite widget handling */
gtk_widget_show_all (dialog);
/* Extra controls for manipulating the test environment
*/
control_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
vbbox = gtk_button_box_new (GTK_ORIENTATION_VERTICAL);
gtk_container_add (GTK_CONTAINER (control_window), vbbox);
button = gtk_button_new_with_mnemonic ("_Select all");
gtk_widget_set_sensitive (button, multiple);
gtk_container_add (GTK_CONTAINER (vbbox), button);
g_signal_connect_swapped (button, "clicked",
G_CALLBACK (gtk_file_chooser_select_all), dialog);
g_signal_connect (dialog, "notify::select-multiple",
G_CALLBACK (notify_multiple_cb), button);
button = gtk_button_new_with_mnemonic ("_Unselect all");
gtk_container_add (GTK_CONTAINER (vbbox), button);
g_signal_connect_swapped (button, "clicked",
G_CALLBACK (gtk_file_chooser_unselect_all), dialog);
button = gtk_button_new_with_label ("set_current_folder (\"/nonexistent\")");
gtk_container_add (GTK_CONTAINER (vbbox), button);
g_signal_connect (button, "clicked",
G_CALLBACK (set_folder_nonexistent_cb), dialog);
button = gtk_button_new_with_label ("set_current_folder (\"/usr/nonexistent\")");
gtk_container_add (GTK_CONTAINER (vbbox), button);
g_signal_connect (button, "clicked",
G_CALLBACK (set_folder_existing_nonexistent_cb), dialog);
button = gtk_button_new_with_label ("set_filename (\"/nonexistent\")");
gtk_container_add (GTK_CONTAINER (vbbox), button);
g_signal_connect (button, "clicked",
G_CALLBACK (set_filename_nonexistent_cb), dialog);
button = gtk_button_new_with_label ("set_filename (\"/usr/nonexistent\")");
gtk_container_add (GTK_CONTAINER (vbbox), button);
g_signal_connect (button, "clicked",
G_CALLBACK (set_filename_existing_nonexistent_cb), dialog);
button = gtk_button_new_with_label ("Get selection");
gtk_container_add (GTK_CONTAINER (vbbox), button);
g_signal_connect (button, "clicked",
G_CALLBACK (get_selection_cb), dialog);
button = gtk_button_new_with_label ("Get current name");
gtk_container_add (GTK_CONTAINER (vbbox), button);
g_signal_connect (button, "clicked",
G_CALLBACK (get_current_name_cb), dialog);
button = gtk_button_new_with_label ("Unmap and remap");
gtk_container_add (GTK_CONTAINER (vbbox), button);
g_signal_connect (button, "clicked",
G_CALLBACK (unmap_and_remap_cb), dialog);
gtk_widget_show_all (control_window);
g_object_ref (control_window);
g_signal_connect (dialog, "destroy",
G_CALLBACK (kill_dependent), control_window);
/* We need to hold a ref until we have destroyed the widgets, just in case
* someone else destroys them. We explicitly destroy windows to catch leaks.
*/
g_object_ref (dialog);
gtk_main ();
gtk_widget_destroy (dialog);
g_object_unref (dialog);
return 0;
}
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