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gimp/app/widgets/gimpthumbbox.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpthumb/gimpthumb.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "config/gimpcoreconfig.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpimagefile.h"
#include "core/gimpprogress.h"
#include "core/gimpsubprogress.h"
#include "plug-in/gimppluginmanager-file.h"
#include "gimpfiledialog.h" /* eek */
#include "gimpthumbbox.h"
#include "gimpview.h"
#include "gimpviewrenderer-frame.h"
#include "gimpwidgets-utils.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gimp_thumb_box_progress_iface_init (GimpProgressInterface *iface);
static void gimp_thumb_box_dispose (GObject *object);
static void gimp_thumb_box_finalize (GObject *object);
static GimpProgress *
gimp_thumb_box_progress_start (GimpProgress *progress,
gboolean cancellable,
const gchar *message);
static void gimp_thumb_box_progress_end (GimpProgress *progress);
static gboolean gimp_thumb_box_progress_is_active (GimpProgress *progress);
static void gimp_thumb_box_progress_set_value (GimpProgress *progress,
gdouble percentage);
static gdouble gimp_thumb_box_progress_get_value (GimpProgress *progress);
static void gimp_thumb_box_progress_pulse (GimpProgress *progress);
static gboolean gimp_thumb_box_progress_message (GimpProgress *progress,
Gimp *gimp,
GimpMessageSeverity severity,
const gchar *domain,
const gchar *message);
static gboolean gimp_thumb_box_ebox_button_press (GtkWidget *widget,
GdkEventButton *bevent,
GimpThumbBox *box);
static void gimp_thumb_box_thumbnail_clicked (GtkWidget *widget,
GdkModifierType state,
GimpThumbBox *box);
static void gimp_thumb_box_imagefile_info_changed (GimpImagefile *imagefile,
GimpThumbBox *box);
static void gimp_thumb_box_thumb_state_notify (GimpThumbnail *thumb,
GParamSpec *pspec,
GimpThumbBox *box);
static void gimp_thumb_box_create_thumbnails (GimpThumbBox *box,
gboolean force);
static void gimp_thumb_box_create_thumbnail (GimpThumbBox *box,
GFile *file,
GimpThumbnailSize size,
gboolean force,
GimpProgress *progress);
static gboolean gimp_thumb_box_auto_thumbnail (GimpThumbBox *box);
G_DEFINE_TYPE_WITH_CODE (GimpThumbBox, gimp_thumb_box, GTK_TYPE_FRAME,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROGRESS,
gimp_thumb_box_progress_iface_init))
#define parent_class gimp_thumb_box_parent_class
static void
gimp_thumb_box_class_init (GimpThumbBoxClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->dispose = gimp_thumb_box_dispose;
object_class->finalize = gimp_thumb_box_finalize;
gtk_widget_class_set_css_name (widget_class, "treeview");
}
static void
gimp_thumb_box_init (GimpThumbBox *box)
{
gtk_frame_set_shadow_type (GTK_FRAME (box), GTK_SHADOW_IN);
box->idle_id = 0;
}
static void
gimp_thumb_box_progress_iface_init (GimpProgressInterface *iface)
{
iface->start = gimp_thumb_box_progress_start;
iface->end = gimp_thumb_box_progress_end;
iface->is_active = gimp_thumb_box_progress_is_active;
iface->set_value = gimp_thumb_box_progress_set_value;
iface->get_value = gimp_thumb_box_progress_get_value;
iface->pulse = gimp_thumb_box_progress_pulse;
iface->message = gimp_thumb_box_progress_message;
}
static void
gimp_thumb_box_dispose (GObject *object)
{
GimpThumbBox *box = GIMP_THUMB_BOX (object);
if (box->idle_id)
{
g_source_remove (box->idle_id);
box->idle_id = 0;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
box->progress = NULL;
}
static void
gimp_thumb_box_finalize (GObject *object)
{
GimpThumbBox *box = GIMP_THUMB_BOX (object);
gimp_thumb_box_take_files (box, NULL);
g_clear_object (&box->imagefile);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GimpProgress *
gimp_thumb_box_progress_start (GimpProgress *progress,
gboolean cancellable,
const gchar *message)
{
GimpThumbBox *box = GIMP_THUMB_BOX (progress);
if (! box->progress)
return NULL;
if (! box->progress_active)
{
GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
GtkWidget *toplevel;
gtk_progress_bar_set_fraction (bar, 0.0);
box->progress_active = TRUE;
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (box));
if (GIMP_IS_FILE_DIALOG (toplevel))
gtk_dialog_set_response_sensitive (GTK_DIALOG (toplevel),
GTK_RESPONSE_CANCEL, cancellable);
return progress;
}
return NULL;
}
static void
gimp_thumb_box_progress_end (GimpProgress *progress)
{
if (gimp_thumb_box_progress_is_active (progress))
{
GimpThumbBox *box = GIMP_THUMB_BOX (progress);
GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
gtk_progress_bar_set_fraction (bar, 0.0);
box->progress_active = FALSE;
}
}
static gboolean
gimp_thumb_box_progress_is_active (GimpProgress *progress)
{
GimpThumbBox *box = GIMP_THUMB_BOX (progress);
return (box->progress && box->progress_active);
}
static void
gimp_thumb_box_progress_set_value (GimpProgress *progress,
gdouble percentage)
{
if (gimp_thumb_box_progress_is_active (progress))
{
GimpThumbBox *box = GIMP_THUMB_BOX (progress);
GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
gtk_progress_bar_set_fraction (bar, percentage);
}
}
static gdouble
gimp_thumb_box_progress_get_value (GimpProgress *progress)
{
if (gimp_thumb_box_progress_is_active (progress))
{
GimpThumbBox *box = GIMP_THUMB_BOX (progress);
GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
return gtk_progress_bar_get_fraction (bar);
}
return 0.0;
}
static void
gimp_thumb_box_progress_pulse (GimpProgress *progress)
{
if (gimp_thumb_box_progress_is_active (progress))
{
GimpThumbBox *box = GIMP_THUMB_BOX (progress);
GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
gtk_progress_bar_pulse (bar);
}
}
static gboolean
gimp_thumb_box_progress_message (GimpProgress *progress,
Gimp *gimp,
GimpMessageSeverity severity,
const gchar *domain,
const gchar *message)
{
/* GimpThumbBox never shows any messages */
return TRUE;
}
/* stupid GimpHeader class just so we get a "header" CSS node */
#define GIMP_TYPE_HEADER (gimp_header_get_type ())
typedef struct _GtkBox GimpHeader;
typedef struct _GtkBoxClass GimpHeaderClass;
static GType gimp_header_get_type (void) G_GNUC_CONST;
G_DEFINE_TYPE (GimpHeader, gimp_header, GTK_TYPE_BOX)
static void
gimp_header_class_init (GimpHeaderClass *klass)
{
gtk_widget_class_set_css_name (GTK_WIDGET_CLASS (klass), "header");
}
static void
gimp_header_init (GimpHeader *header)
{
gtk_orientable_set_orientation (GTK_ORIENTABLE (header),
GTK_ORIENTATION_VERTICAL);
}
/* public functions */
GtkWidget *
gimp_thumb_box_new (GimpContext *context)
{
GimpThumbBox *box;
GtkWidget *vbox;
GtkWidget *vbox2;
GtkWidget *ebox;
GtkWidget *button;
GtkWidget *label;
gchar *str;
gint h, v;
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
box = g_object_new (GIMP_TYPE_THUMB_BOX, NULL);
gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (box)),
GTK_STYLE_CLASS_VIEW);
box->context = context;
ebox = gtk_event_box_new ();
gtk_container_add (GTK_CONTAINER (box), ebox);
gtk_widget_show (ebox);
g_signal_connect (ebox, "button-press-event",
G_CALLBACK (gimp_thumb_box_ebox_button_press),
box);
str = g_strdup_printf (_("Click to update preview\n"
"%s-Click to force update even "
"if preview is up-to-date"),
gimp_get_mod_string (gimp_get_toggle_behavior_mask ()));
gimp_help_set_help_data (ebox, str, NULL);
g_free (str);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (ebox), vbox);
gtk_widget_show (vbox);
vbox2 = g_object_new (GIMP_TYPE_HEADER, NULL);
gtk_box_pack_start (GTK_BOX (vbox), vbox2, FALSE, FALSE, 0);
gtk_widget_show (vbox2);
button = gtk_button_new ();
gtk_box_pack_start (GTK_BOX (vbox2), button, FALSE, FALSE, 0);
gtk_widget_show (button);
label = gtk_label_new_with_mnemonic (_("Pr_eview"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_container_add (GTK_CONTAINER (button), label);
gtk_widget_show (label);
g_signal_connect (button, "button-press-event",
G_CALLBACK (gtk_true),
NULL);
g_signal_connect (button, "button-release-event",
G_CALLBACK (gtk_true),
NULL);
g_signal_connect (button, "enter-notify-event",
G_CALLBACK (gtk_true),
NULL);
g_signal_connect (button, "leave-notify-event",
G_CALLBACK (gtk_true),
NULL);
vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_container_set_border_width (GTK_CONTAINER (vbox2), 4);
gtk_box_pack_start (GTK_BOX (vbox), vbox2, TRUE, TRUE, 0);
gtk_widget_show (vbox2);
box->imagefile = gimp_imagefile_new (context->gimp, NULL);
g_signal_connect (box->imagefile, "info-changed",
G_CALLBACK (gimp_thumb_box_imagefile_info_changed),
box);
g_signal_connect (gimp_imagefile_get_thumbnail (box->imagefile),
"notify::thumb-state",
G_CALLBACK (gimp_thumb_box_thumb_state_notify),
box);
gimp_view_renderer_get_frame_size (&h, &v);
box->preview = gimp_view_new (context,
GIMP_VIEWABLE (box->imagefile),
/* add padding for the shadow frame */
context->gimp->config->thumbnail_size +
MAX (h, v),
0, FALSE);
gtk_style_context_add_class (gtk_widget_get_style_context (box->preview),
GTK_STYLE_CLASS_VIEW);
gtk_box_pack_start (GTK_BOX (vbox2), box->preview, FALSE, FALSE, 0);
gtk_widget_show (box->preview);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), box->preview);
g_signal_connect (box->preview, "clicked",
G_CALLBACK (gimp_thumb_box_thumbnail_clicked),
box);
box->filename = gtk_label_new (_("No selection"));
gtk_label_set_max_width_chars (GTK_LABEL (box->filename), 1);
gtk_label_set_ellipsize (GTK_LABEL (box->filename), PANGO_ELLIPSIZE_MIDDLE);
gtk_label_set_justify (GTK_LABEL (box->filename), GTK_JUSTIFY_CENTER);
gimp_label_set_attributes (GTK_LABEL (box->filename),
PANGO_ATTR_STYLE, PANGO_STYLE_OBLIQUE,
-1);
gtk_box_pack_start (GTK_BOX (vbox2), box->filename, FALSE, FALSE, 0);
gtk_widget_show (box->filename);
box->info = gtk_label_new (" \n \n \n ");
gtk_label_set_justify (GTK_LABEL (box->info), GTK_JUSTIFY_CENTER);
gtk_label_set_line_wrap (GTK_LABEL (box->info), TRUE);
gimp_label_set_attributes (GTK_LABEL (box->info),
PANGO_ATTR_SCALE, PANGO_SCALE_SMALL,
-1);
gtk_box_pack_start (GTK_BOX (vbox2), box->info, FALSE, FALSE, 0);
gtk_widget_show (box->info);
box->progress = gtk_progress_bar_new ();
gtk_widget_set_halign (box->progress, GTK_ALIGN_FILL);
gtk_progress_bar_set_show_text (GTK_PROGRESS_BAR (box->progress), TRUE);
gtk_progress_bar_set_text (GTK_PROGRESS_BAR (box->progress), "Fog");
gtk_box_pack_end (GTK_BOX (vbox2), box->progress, FALSE, FALSE, 0);
/* don't gtk_widget_show (box->progress); */
gtk_widget_set_size_request (GTK_WIDGET (box),
MAX ((gint) GIMP_THUMB_SIZE_NORMAL,
(gint) context->gimp->config->thumbnail_size) +
2 * MAX (h, v),
-1);
return GTK_WIDGET (box);
}
void
gimp_thumb_box_take_file (GimpThumbBox *box,
GFile *file)
{
g_return_if_fail (GIMP_IS_THUMB_BOX (box));
g_return_if_fail (file == NULL || G_IS_FILE (file));
if (box->idle_id)
{
g_source_remove (box->idle_id);
box->idle_id = 0;
}
gimp_imagefile_set_file (box->imagefile, file);
if (file)
{
gchar *basename = g_path_get_basename (gimp_file_get_utf8_name (file));
gtk_label_set_text (GTK_LABEL (box->filename), basename);
g_free (basename);
}
else
{
gtk_label_set_text (GTK_LABEL (box->filename), _("No selection"));
}
gtk_widget_set_sensitive (GTK_WIDGET (box), file != NULL);
gimp_imagefile_update (box->imagefile);
}
void
gimp_thumb_box_take_files (GimpThumbBox *box,
GSList *files)
{
g_return_if_fail (GIMP_IS_THUMB_BOX (box));
if (box->files)
{
g_slist_free_full (box->files, (GDestroyNotify) g_object_unref);
box->files = NULL;
}
box->files = files;
}
/* private functions */
static gboolean
gimp_thumb_box_ebox_button_press (GtkWidget *widget,
GdkEventButton *bevent,
GimpThumbBox *box)
{
gimp_thumb_box_thumbnail_clicked (widget, bevent->state, box);
return TRUE;
}
static void
gimp_thumb_box_thumbnail_clicked (GtkWidget *widget,
GdkModifierType state,
GimpThumbBox *box)
{
gimp_thumb_box_create_thumbnails (box,
(state & gimp_get_toggle_behavior_mask ()) ?
TRUE : FALSE);
}
static void
gimp_thumb_box_imagefile_info_changed (GimpImagefile *imagefile,
GimpThumbBox *box)
{
gtk_label_set_text (GTK_LABEL (box->info),
gimp_imagefile_get_desc_string (imagefile));
}
static void
gimp_thumb_box_thumb_state_notify (GimpThumbnail *thumb,
GParamSpec *pspec,
GimpThumbBox *box)
{
if (box->idle_id)
return;
if (thumb->image_state == GIMP_THUMB_STATE_REMOTE)
return;
switch (thumb->thumb_state)
{
case GIMP_THUMB_STATE_NOT_FOUND:
case GIMP_THUMB_STATE_OLD:
box->idle_id =
g_idle_add_full (G_PRIORITY_LOW,
(GSourceFunc) gimp_thumb_box_auto_thumbnail,
box, NULL);
break;
default:
break;
}
}
static void
gimp_thumb_box_create_thumbnails (GimpThumbBox *box,
gboolean force)
{
Gimp *gimp = box->context->gimp;
GimpProgress *progress = GIMP_PROGRESS (box);
GimpFileDialog *dialog = NULL;
GtkWidget *toplevel;
GSList *list;
gint n_files;
gint i;
if (gimp->config->thumbnail_size == GIMP_THUMBNAIL_SIZE_NONE)
return;
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (box));
if (GIMP_IS_FILE_DIALOG (toplevel))
dialog = GIMP_FILE_DIALOG (toplevel);
gimp_set_busy (gimp);
if (dialog)
gimp_file_dialog_set_sensitive (dialog, FALSE);
else
gtk_widget_set_sensitive (toplevel, FALSE);
if (box->files)
{
gtk_widget_hide (box->info);
gtk_widget_show (box->progress);
}
n_files = g_slist_length (box->files);
if (n_files > 1)
{
gchar *str;
gimp_progress_start (GIMP_PROGRESS (box), TRUE, "%s", "");
progress = gimp_sub_progress_new (GIMP_PROGRESS (box));
gimp_sub_progress_set_step (GIMP_SUB_PROGRESS (progress), 0, n_files);
for (list = box->files->next, i = 1;
list;
list = g_slist_next (list), i++)
{
str = g_strdup_printf (_("Thumbnail %d of %d"), i, n_files);
gtk_progress_bar_set_text (GTK_PROGRESS_BAR (box->progress), str);
g_free (str);
gimp_progress_set_value (progress, 0.0);
while (g_main_context_pending (NULL))
g_main_context_iteration (NULL, FALSE);
gimp_thumb_box_create_thumbnail (box,
list->data,
gimp->config->thumbnail_size,
force,
progress);
if (dialog && dialog->canceled)
goto canceled;
gimp_sub_progress_set_step (GIMP_SUB_PROGRESS (progress), i, n_files);
}
str = g_strdup_printf (_("Thumbnail %d of %d"), n_files, n_files);
gtk_progress_bar_set_text (GTK_PROGRESS_BAR (box->progress), str);
g_free (str);
gimp_progress_set_value (progress, 0.0);
while (g_main_context_pending (NULL))
g_main_context_iteration (NULL, FALSE);
}
if (box->files)
{
gimp_thumb_box_create_thumbnail (box,
box->files->data,
gimp->config->thumbnail_size,
force,
progress);
gimp_progress_set_value (progress, 1.0);
}
canceled:
if (n_files > 1)
{
g_object_unref (progress);
gimp_progress_end (GIMP_PROGRESS (box));
gtk_progress_bar_set_text (GTK_PROGRESS_BAR (box->progress), "");
}
if (box->files)
{
gtk_widget_hide (box->progress);
gtk_widget_show (box->info);
}
if (dialog)
gimp_file_dialog_set_sensitive (dialog, TRUE);
else
gtk_widget_set_sensitive (toplevel, TRUE);
gimp_unset_busy (gimp);
}
static void
gimp_thumb_box_create_thumbnail (GimpThumbBox *box,
GFile *file,
GimpThumbnailSize size,
gboolean force,
GimpProgress *progress)
{
GimpThumbnail *thumb = gimp_imagefile_get_thumbnail (box->imagefile);
gchar *basename;
basename = g_path_get_basename (gimp_file_get_utf8_name (file));
gtk_label_set_text (GTK_LABEL (box->filename), basename);
g_free (basename);
gimp_imagefile_set_file (box->imagefile, file);
if (force ||
(gimp_thumbnail_peek_thumb (thumb, (GimpThumbSize) size) < GIMP_THUMB_STATE_FAILED &&
! gimp_thumbnail_has_failed (thumb)))
{
GError *error = NULL;
if (! gimp_imagefile_create_thumbnail (box->imagefile, box->context,
progress,
size, ! force, &error))
{
gimp_message_literal (box->context->gimp,
G_OBJECT (progress), GIMP_MESSAGE_ERROR,
error->message);
g_clear_error (&error);
}
}
}
static gboolean
gimp_thumb_box_auto_thumbnail (GimpThumbBox *box)
{
Gimp *gimp = box->context->gimp;
GimpThumbnail *thumb = gimp_imagefile_get_thumbnail (box->imagefile);
GFile *file = gimp_imagefile_get_file (box->imagefile);
box->idle_id = 0;
if (thumb->image_state == GIMP_THUMB_STATE_NOT_FOUND)
return FALSE;
switch (thumb->thumb_state)
{
case GIMP_THUMB_STATE_NOT_FOUND:
case GIMP_THUMB_STATE_OLD:
if (thumb->image_filesize < gimp->config->thumbnail_filesize_limit &&
! gimp_thumbnail_has_failed (thumb) &&
gimp_plug_in_manager_file_procedure_find_by_extension (gimp->plug_in_manager,
GIMP_FILE_PROCEDURE_GROUP_OPEN,
file))
{
if (thumb->image_filesize > 0)
{
gchar *size;
gchar *text;
size = g_format_size (thumb->image_filesize);
text = g_strdup_printf ("%s\n%s",
size, _("Creating preview..."));
gtk_label_set_text (GTK_LABEL (box->info), text);
g_free (text);
g_free (size);
}
else
{
gtk_label_set_text (GTK_LABEL (box->info),
_("Creating preview..."));
}
gimp_imagefile_create_thumbnail_weak (box->imagefile, box->context,
GIMP_PROGRESS (box),
gimp->config->thumbnail_size,
TRUE);
}
break;
default:
break;
}
return FALSE;
}
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