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gimp/app/dialogs/resize-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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "dialogs-types.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimplayer.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpsizebox.h"
#include "widgets/gimpviewabledialog.h"
#include "resize-dialog.h"
#include "gimp-intl.h"
#define RESPONSE_RESET 1
#define SB_WIDTH 8
typedef struct
{
GimpViewable *viewable;
gint old_width;
gint old_height;
GimpUnit old_unit;
GtkWidget *box;
GtkWidget *offset;
GtkWidget *area;
GimpItemSet layer_set;
GimpResizeCallback callback;
gpointer user_data;
} ResizeDialog;
static void resize_dialog_response (GtkWidget *dialog,
gint response_id,
ResizeDialog *private);
static void resize_dialog_reset (ResizeDialog *private);
static void resize_dialog_free (ResizeDialog *private);
static void size_notify (GimpSizeBox *box,
GParamSpec *pspec,
ResizeDialog *private);
static void offset_update (GtkWidget *widget,
ResizeDialog *private);
static void offsets_changed (GtkWidget *area,
gint off_x,
gint off_y,
ResizeDialog *private);
static void offset_center_clicked (GtkWidget *widget,
ResizeDialog *private);
GtkWidget *
resize_dialog_new (GimpViewable *viewable,
GimpContext *context,
const gchar *title,
const gchar *role,
GtkWidget *parent,
GimpHelpFunc help_func,
const gchar *help_id,
GimpUnit unit,
GimpResizeCallback callback,
gpointer user_data)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *abox;
GtkWidget *frame;
GtkWidget *button;
GtkWidget *spinbutton;
GtkWidget *entry;
GtkObject *adjustment;
GdkPixbuf *pixbuf;
ResizeDialog *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 = _("Canvas 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);
}
dialog = gimp_viewable_dialog_new (viewable, context,
title, role, GIMP_STOCK_RESIZE, title,
parent,
help_func, help_id,
GIMP_STOCK_RESET, RESPONSE_RESET,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GIMP_STOCK_RESIZE, GTK_RESPONSE_OK,
NULL);
gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
RESPONSE_RESET,
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
private = g_slice_new0 (ResizeDialog);
g_object_weak_ref (G_OBJECT (dialog),
(GWeakNotify) resize_dialog_free, private);
private->viewable = viewable;
private->old_width = width;
private->old_height = height;
private->old_unit = unit;
private->layer_set = GIMP_ITEM_SET_NONE;
private->callback = callback;
private->user_data = user_data;
gimp_image_get_resolution (image, &xres, &yres);
private->box = g_object_new (GIMP_TYPE_SIZE_BOX,
"width", width,
"height", height,
"unit", unit,
"xresolution", xres,
"yresolution", yres,
"keep-aspect", FALSE,
"edit-resolution", FALSE,
NULL);
g_signal_connect (dialog, "response",
G_CALLBACK (resize_dialog_response),
private);
main_vbox = gtk_vbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_container_add (GTK_CONTAINER (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
main_vbox);
gtk_widget_show (main_vbox);
frame = gimp_frame_new (text);
gtk_box_pack_start (GTK_BOX (main_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 (_("Offset"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
/* the offset sizeentry */
spinbutton = gimp_spin_button_new (&adjustment,
1, 1, 1, 1, 10, 0,
1, 2);
gtk_entry_set_width_chars (GTK_ENTRY (spinbutton), SB_WIDTH);
private->offset = entry = gimp_size_entry_new (1, unit, "%p",
TRUE, FALSE, FALSE, SB_WIDTH,
GIMP_SIZE_ENTRY_UPDATE_SIZE);
gtk_table_set_col_spacing (GTK_TABLE (entry), 0, 6);
gtk_table_set_col_spacing (GTK_TABLE (entry), 1, 6);
gtk_table_set_col_spacing (GTK_TABLE (entry), 3, 12);
gtk_table_set_row_spacing (GTK_TABLE (entry), 0, 2);
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (entry),
GTK_SPIN_BUTTON (spinbutton), NULL);
gtk_table_attach_defaults (GTK_TABLE (entry), spinbutton,
1, 2, 0, 1);
gtk_widget_show (spinbutton);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (entry),
_("_X:"), 0, 0, 0.0);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (entry),_("_Y:"), 1, 0, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), entry, FALSE, FALSE, 0);
gtk_widget_show (entry);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (entry), 0, xres, FALSE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (entry), 1, yres, FALSE);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (entry), 0, 0, 0);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (entry), 1, 0, 0);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (entry), 0, 0);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (entry), 1, 0);
g_signal_connect (entry, "value-changed",
G_CALLBACK (offset_update),
private);
button = gtk_button_new_from_stock (GIMP_STOCK_CENTER);
gtk_table_attach_defaults (GTK_TABLE (entry), button, 4, 5, 1, 2);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (offset_center_clicked),
private);
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), abox, FALSE, FALSE, 0);
gtk_widget_show (abox);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (abox), frame);
gtk_widget_show (frame);
private->area = gimp_offset_area_new (width, height);
gtk_container_add (GTK_CONTAINER (frame), private->area);
gtk_widget_show (private->area);
gimp_viewable_get_preview_size (viewable, 200, FALSE, TRUE, &width, &height);
pixbuf = gimp_viewable_get_pixbuf (viewable, context,
width, height);
if (pixbuf)
gimp_offset_area_set_pixbuf (GIMP_OFFSET_AREA (private->area), pixbuf);
g_signal_connect (private->area, "offsets-changed",
G_CALLBACK (offsets_changed),
private);
g_signal_connect (private->box, "notify",
G_CALLBACK (size_notify),
private);
if (GIMP_IS_IMAGE (viewable))
{
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *combo;
frame = gimp_frame_new (_("Layers"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
hbox = gtk_hbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
label = gtk_label_new_with_mnemonic (_("Resize _layers:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
combo = gimp_enum_combo_box_new (GIMP_TYPE_ITEM_SET);
gtk_box_pack_start (GTK_BOX (hbox), combo, TRUE, TRUE, 0);
gtk_widget_show (combo);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), combo);
gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo),
private->layer_set,
G_CALLBACK (gimp_int_combo_box_get_active),
&private->layer_set);
}
return dialog;
}
static void
resize_dialog_response (GtkWidget *dialog,
gint response_id,
ResizeDialog *private)
{
GimpSizeEntry *entry = GIMP_SIZE_ENTRY (private->offset);
GimpUnit unit;
gint width;
gint height;
switch (response_id)
{
case RESPONSE_RESET:
resize_dialog_reset (private);
break;
case GTK_RESPONSE_OK:
g_object_get (private->box,
"width", &width,
"height", &height,
"unit", &unit,
NULL);
private->callback (dialog,
private->viewable,
width,
height,
unit,
gimp_size_entry_get_refval (entry, 0),
gimp_size_entry_get_refval (entry, 1),
private->layer_set,
private->user_data);
break;
default:
gtk_widget_destroy (dialog);
break;
}
}
static void
resize_dialog_reset (ResizeDialog *private)
{
g_object_set (private->box,
"keep-aspect", FALSE,
NULL);
g_object_set (private->box,
"width", private->old_width,
"height", private->old_height,
"unit", private->old_unit,
NULL);
}
static void
resize_dialog_free (ResizeDialog *private)
{
g_slice_free (ResizeDialog, private);
}
static void
size_notify (GimpSizeBox *box,
GParamSpec *pspec,
ResizeDialog *private)
{
gint diff_x = box->width - private->old_width;
gint diff_y = box->height - private->old_height;
gimp_offset_area_set_size (GIMP_OFFSET_AREA (private->area),
box->width, box->height);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (private->offset), 0,
MIN (0, diff_x), MAX (0, diff_x));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (private->offset), 1,
MIN (0, diff_y), MAX (0, diff_y));
}
static gint
resize_bound_off_x (ResizeDialog *private,
gint offset_x)
{
GimpSizeBox *box = GIMP_SIZE_BOX (private->box);
if (private->old_width <= box->width)
return CLAMP (offset_x, 0, (box->width - private->old_width));
else
return CLAMP (offset_x, (box->width - private->old_width), 0);
}
static gint
resize_bound_off_y (ResizeDialog *private,
gint off_y)
{
GimpSizeBox *box = GIMP_SIZE_BOX (private->box);
if (private->old_height <= box->height)
return CLAMP (off_y, 0, (box->height - private->old_height));
else
return CLAMP (off_y, (box->height - private->old_height), 0);
}
static void
offset_update (GtkWidget *widget,
ResizeDialog *private)
{
GimpSizeEntry *entry = GIMP_SIZE_ENTRY (private->offset);
gint off_x;
gint off_y;
off_x = resize_bound_off_x (private,
RINT (gimp_size_entry_get_refval (entry, 0)));
off_y = resize_bound_off_y (private,
RINT (gimp_size_entry_get_refval (entry, 1)));
gimp_offset_area_set_offsets (GIMP_OFFSET_AREA (private->area), off_x, off_y);
}
static void
offsets_changed (GtkWidget *area,
gint off_x,
gint off_y,
ResizeDialog *private)
{
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset), 0, off_x);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset), 1, off_y);
}
static void
offset_center_clicked (GtkWidget *widget,
ResizeDialog *private)
{
GimpSizeBox *box = GIMP_SIZE_BOX (private->box);
gint off_x;
gint off_y;
off_x = resize_bound_off_x (private, (box->width - private->old_width) / 2);
off_y = resize_bound_off_y (private, (box->height - private->old_height) / 2);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset), 0, off_x);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset), 1, off_y);
g_signal_emit_by_name (private->offset, "value-changed", 0);
}
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