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gimp/app/dialogs/scale-dialog.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 <gegl.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "dialogs-types.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimpitem.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpmessagebox.h"
#include "widgets/gimpsizebox.h"
#include "widgets/gimpviewabledialog.h"
#include "scale-dialog.h"
#include "gimp-intl.h"
#define RESPONSE_RESET 1
typedef struct _ScaleDialog ScaleDialog;
struct _ScaleDialog
{
GimpViewable *viewable;
GimpUnit unit;
GimpInterpolationType interpolation;
GtkWidget *box;
GtkWidget *combo;
GimpScaleCallback callback;
gpointer user_data;
};
/* local function prototypes */
static void scale_dialog_free (ScaleDialog *private);
static void scale_dialog_response (GtkWidget *dialog,
gint response_id,
ScaleDialog *private);
static void scale_dialog_reset (ScaleDialog *private);
/* public function */
GtkWidget *
scale_dialog_new (GimpViewable *viewable,
GimpContext *context,
const gchar *title,
const gchar *role,
GtkWidget *parent,
GimpHelpFunc help_func,
const gchar *help_id,
GimpUnit unit,
GimpInterpolationType interpolation,
GimpScaleCallback callback,
gpointer user_data)
{
GtkWidget *dialog;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *frame;
GtkWidget *label;
ScaleDialog *private;
GimpImage *image = NULL;
const gchar *text = NULL;
gint width, height;
gdouble xres, yres;
g_return_val_if_fail (GIMP_IS_VIEWABLE (viewable), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (callback != NULL, NULL);
if (GIMP_IS_IMAGE (viewable))
{
image = GIMP_IMAGE (viewable);
width = gimp_image_get_width (image);
height = gimp_image_get_height (image);
text = _("Image Size");
}
else if (GIMP_IS_ITEM (viewable))
{
GimpItem *item = GIMP_ITEM (viewable);
image = gimp_item_get_image (item);
width = gimp_item_get_width (item);
height = gimp_item_get_height (item);
text = _("Layer Size");
}
else
{
g_return_val_if_reached (NULL);
}
private = g_slice_new0 (ScaleDialog);
private->viewable = viewable;
private->interpolation = interpolation;
private->unit = unit;
private->callback = callback;
private->user_data = user_data;
gimp_image_get_resolution (image, &xres, &yres);
dialog = gimp_viewable_dialog_new (viewable, context,
title, role, GIMP_ICON_OBJECT_SCALE, title,
parent,
help_func, help_id,
_("_Reset"), RESPONSE_RESET,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_Scale"), GTK_RESPONSE_OK,
NULL);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
RESPONSE_RESET,
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
g_object_weak_ref (G_OBJECT (dialog),
(GWeakNotify) scale_dialog_free, private);
g_signal_connect (dialog, "response",
G_CALLBACK (scale_dialog_response),
private);
private->box = g_object_new (GIMP_TYPE_SIZE_BOX,
"width", width,
"height", height,
"unit", unit,
"xresolution", xres,
"yresolution", yres,
"resolution-unit", gimp_image_get_unit (image),
"keep-aspect", TRUE,
"edit-resolution", GIMP_IS_IMAGE (viewable),
NULL);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
frame = gimp_frame_new (text);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
gtk_container_add (GTK_CONTAINER (frame), private->box);
gtk_widget_show (private->box);
frame = gimp_frame_new (_("Quality"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
label = gtk_label_new_with_mnemonic (_("I_nterpolation:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gtk_size_group_add_widget (GIMP_SIZE_BOX (private->box)->size_group, label);
private->combo = gimp_enum_combo_box_new (GIMP_TYPE_INTERPOLATION_TYPE);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), private->combo);
gtk_box_pack_start (GTK_BOX (hbox), private->combo, TRUE, TRUE, 0);
gtk_widget_show (private->combo);
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (private->combo),
private->interpolation);
return dialog;
}
/* private functions */
static void
scale_dialog_free (ScaleDialog *private)
{
g_slice_free (ScaleDialog, private);
}
static void
scale_dialog_response (GtkWidget *dialog,
gint response_id,
ScaleDialog *private)
{
GimpUnit unit = private->unit;
gint interpolation = private->interpolation;
GimpUnit resolution_unit;
gint width, height;
gdouble xres, yres;
switch (response_id)
{
case RESPONSE_RESET:
scale_dialog_reset (private);
break;
case GTK_RESPONSE_OK:
g_object_get (private->box,
"width", &width,
"height", &height,
"unit", &unit,
"xresolution", &xres,
"yresolution", &yres,
"resolution-unit", &resolution_unit,
NULL);
gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (private->combo),
&interpolation);
private->callback (dialog,
private->viewable,
width, height, unit, interpolation,
xres, yres, resolution_unit,
private->user_data);
break;
default:
gtk_widget_destroy (dialog);
break;
}
}
static void
scale_dialog_reset (ScaleDialog *private)
{
GimpImage *image;
gint width, height;
gdouble xres, yres;
if (GIMP_IS_IMAGE (private->viewable))
{
image = GIMP_IMAGE (private->viewable);
width = gimp_image_get_width (image);
height = gimp_image_get_height (image);
}
else if (GIMP_IS_ITEM (private->viewable))
{
GimpItem *item = GIMP_ITEM (private->viewable);
image = gimp_item_get_image (item);
width = gimp_item_get_width (item);
height = gimp_item_get_height (item);
}
else
{
g_return_if_reached ();
}
gimp_image_get_resolution (image, &xres, &yres);
g_object_set (private->box,
"keep-aspect", FALSE,
NULL);
g_object_set (private->box,
"width", width,
"height", height,
"unit", private->unit,
NULL);
g_object_set (private->box,
"keep-aspect", TRUE,
"xresolution", xres,
"yresolution", yres,
"resolution-unit", gimp_image_get_unit (image),
NULL);
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (private->combo),
private->interpolation);
}
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