mirror of https://github.com/GNOME/gimp.git
442 lines
10 KiB
C
442 lines
10 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "libgimpwidgets/gimpwidgets.h"
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#include "core/core-types.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpdrawable-desaturate.h"
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#include "core/gimpdrawable-equalize.h"
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#include "core/gimpimage.h"
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#include "core/gimpimage-duplicate.h"
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#include "pdb/procedural_db.h"
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#include "convert-dialog.h"
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#include "offset-dialog.h"
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#include "resize-dialog.h"
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#include "gdisplay.h"
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#include "undo.h"
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#include "libgimp/gimpintl.h"
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#define return_if_no_display(gdisp) \
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gdisp = gdisplay_active (); \
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if (!gdisp) return
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/* local functions */
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static void image_resize_callback (GtkWidget *widget,
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gpointer data);
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static void image_scale_callback (GtkWidget *widget,
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gpointer data);
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static void image_scale_warn_callback (GtkWidget *widget,
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gboolean do_scale,
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gpointer data);
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static void image_scale_implement (ImageResize *image_scale);
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/* public functions */
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void
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image_convert_rgb_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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return_if_no_display (gdisp);
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convert_to_rgb (gdisp->gimage);
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}
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void
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image_convert_grayscale_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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return_if_no_display (gdisp);
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convert_to_grayscale (gdisp->gimage);
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}
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void
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image_convert_indexed_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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return_if_no_display (gdisp);
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convert_to_indexed (gdisp->gimage);
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}
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void
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image_desaturate_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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GimpDrawable *drawable;
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return_if_no_display (gdisp);
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drawable = gimp_image_active_drawable (gdisp->gimage);
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if (! gimp_drawable_is_rgb (drawable))
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{
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g_message (_("Desaturate operates only on RGB color drawables."));
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return;
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}
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gimp_drawable_desaturate (drawable);
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gdisplays_flush ();
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}
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void
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image_invert_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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GimpDrawable *drawable;
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Argument *return_vals;
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gint nreturn_vals;
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return_if_no_display (gdisp);
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drawable = gimp_image_active_drawable (gdisp->gimage);
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if (gimp_drawable_is_indexed (drawable))
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{
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g_message (_("Invert does not operate on indexed drawables."));
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return;
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}
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return_vals =
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procedural_db_run_proc (gdisp->gimage->gimp,
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"gimp_invert",
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&nreturn_vals,
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GIMP_PDB_DRAWABLE, gimp_drawable_get_ID (drawable),
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GIMP_PDB_END);
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if (!return_vals || return_vals[0].value.pdb_int != GIMP_PDB_SUCCESS)
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g_message (_("Invert operation failed."));
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procedural_db_destroy_args (return_vals, nreturn_vals);
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gdisplays_flush ();
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}
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void
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image_equalize_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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GimpDrawable *drawable;
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return_if_no_display (gdisp);
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drawable = gimp_image_active_drawable (gdisp->gimage);
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if (gimp_drawable_is_indexed (drawable))
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{
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g_message (_("Equalize does not operate on indexed drawables."));
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return;
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}
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gimp_drawable_equalize (drawable, TRUE);
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gdisplays_flush ();
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}
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void
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image_offset_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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return_if_no_display (gdisp);
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offset_dialog_create (gdisp->gimage);
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}
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void
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image_resize_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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GimpImage *gimage;
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ImageResize *image_resize;
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return_if_no_display (gdisp);
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gimage = gdisp->gimage;
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image_resize = g_new0 (ImageResize, 1);
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image_resize->gimage = gimage;
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image_resize->resize = resize_widget_new (ResizeWidget,
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ResizeImage,
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GTK_OBJECT (gimage),
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"destroy",
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gimage->width,
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gimage->height,
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gimage->xresolution,
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gimage->yresolution,
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gimage->unit,
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gdisp->dot_for_dot,
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image_resize_callback,
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NULL,
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image_resize);
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gtk_signal_connect_object (GTK_OBJECT (image_resize->resize->resize_shell),
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"destroy",
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GTK_SIGNAL_FUNC (g_free),
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(GtkObject *) image_resize);
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gtk_widget_show (image_resize->resize->resize_shell);
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}
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void
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image_scale_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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GimpImage *gimage;
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ImageResize *image_scale;
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return_if_no_display (gdisp);
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gimage = gdisp->gimage;
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image_scale = g_new0 (ImageResize, 1);
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image_scale->gimage = gimage;
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image_scale->resize = resize_widget_new (ScaleWidget,
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ResizeImage,
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GTK_OBJECT (gimage),
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"destroy",
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gimage->width,
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gimage->height,
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gimage->xresolution,
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gimage->yresolution,
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gimage->unit,
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gdisp->dot_for_dot,
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image_scale_callback,
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NULL,
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image_scale);
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gtk_signal_connect_object (GTK_OBJECT (image_scale->resize->resize_shell),
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"destroy",
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GTK_SIGNAL_FUNC (g_free),
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(GtkObject *) image_scale);
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gtk_widget_show (image_scale->resize->resize_shell);
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}
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void
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image_duplicate_cmd_callback (GtkWidget *widget,
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gpointer data)
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{
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GDisplay *gdisp;
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return_if_no_display (gdisp);
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gdisplay_new (gimp_image_duplicate (gdisp->gimage), 0x0101);
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}
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/* private functions */
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static void
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image_resize_callback (GtkWidget *widget,
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gpointer data)
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{
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ImageResize *image_resize;
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image_resize = (ImageResize *) data;
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g_assert (image_resize != NULL);
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g_assert (image_resize->gimage != NULL);
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gtk_widget_set_sensitive (image_resize->resize->resize_shell, FALSE);
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if (image_resize->resize->width > 0 &&
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image_resize->resize->height > 0)
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{
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gimp_image_resize (image_resize->gimage,
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image_resize->resize->width,
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image_resize->resize->height,
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image_resize->resize->offset_x,
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image_resize->resize->offset_y);
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gdisplays_flush ();
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}
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else
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{
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g_message (_("Resize Error: Both width and height must be "
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"greater than zero."));
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}
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gtk_widget_destroy (image_resize->resize->resize_shell);
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}
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static void
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image_scale_callback (GtkWidget *widget,
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gpointer data)
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{
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ImageResize *image_scale;
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image_scale = (ImageResize *) data;
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g_assert (image_scale != NULL);
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g_assert (image_scale->gimage != NULL);
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gtk_widget_set_sensitive (image_scale->resize->resize_shell, FALSE);
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if (gimp_image_check_scaling (image_scale->gimage,
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image_scale->resize->width,
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image_scale->resize->height))
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{
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image_scale_implement (image_scale);
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gtk_widget_destroy (image_scale->resize->resize_shell);
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}
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else
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{
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GtkWidget *dialog;
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dialog =
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gimp_query_boolean_box (_("Layer Too Small"),
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gimp_standard_help_func,
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"dialogs/scale_layer_warn.html",
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FALSE,
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_("The chosen image size will shrink\n"
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"some layers completely away.\n"
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"Is this what you want?"),
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_("OK"), _("Cancel"),
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GTK_OBJECT (image_scale->resize->resize_shell),
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"destroy",
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image_scale_warn_callback,
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image_scale);
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gtk_widget_show (dialog);
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}
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}
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static void
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image_scale_warn_callback (GtkWidget *widget,
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gboolean do_scale,
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gpointer data)
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{
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ImageResize *image_scale;
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GimpImage *gimage;
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image_scale = (ImageResize *) data;
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gimage = image_scale->gimage;
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if (do_scale) /* User doesn't mind losing layers... */
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{
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image_scale_implement (image_scale);
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gtk_widget_destroy (image_scale->resize->resize_shell);
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}
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else
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{
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gtk_widget_set_sensitive (image_scale->resize->resize_shell, TRUE);
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}
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}
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static void
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image_scale_implement (ImageResize *image_scale)
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{
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GimpImage *gimage = NULL;
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gboolean rulers_flush = FALSE;
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gboolean display_flush = FALSE; /* this is a bit ugly:
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we hijack the flush variable
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to check if an undo_group was
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already started */
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g_assert (image_scale != NULL);
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g_assert (image_scale->gimage != NULL);
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gimage = image_scale->gimage;
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if (image_scale->resize->resolution_x != gimage->xresolution ||
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image_scale->resize->resolution_y != gimage->yresolution)
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{
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undo_push_group_start (gimage, IMAGE_SCALE_UNDO);
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gimp_image_set_resolution (gimage,
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image_scale->resize->resolution_x,
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image_scale->resize->resolution_y);
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rulers_flush = TRUE;
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display_flush = TRUE;
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}
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if (image_scale->resize->unit != gimage->unit)
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{
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if (!display_flush)
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undo_push_group_start (gimage, IMAGE_SCALE_UNDO);
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gimp_image_set_unit (gimage, image_scale->resize->unit);
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gdisplays_setup_scale (gimage);
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gdisplays_resize_cursor_label (gimage);
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rulers_flush = TRUE;
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display_flush = TRUE;
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}
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if (image_scale->resize->width != gimage->width ||
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image_scale->resize->height != gimage->height)
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{
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if (image_scale->resize->width > 0 &&
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image_scale->resize->height > 0)
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{
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if (!display_flush)
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undo_push_group_start (gimage, IMAGE_SCALE_UNDO);
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gimp_image_scale (gimage,
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image_scale->resize->width,
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image_scale->resize->height);
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display_flush = TRUE;
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}
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else
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{
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g_message (_("Scale Error: Both width and height must be "
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"greater than zero."));
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return;
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}
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}
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if (rulers_flush)
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{
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gdisplays_setup_scale (gimage);
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gdisplays_resize_cursor_label (gimage);
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}
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if (display_flush)
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{
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undo_push_group_end (gimage);
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gdisplays_flush ();
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}
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}
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