mirror of https://github.com/GNOME/gimp.git
372 lines
8.9 KiB
C
372 lines
8.9 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 "gui-types.h"
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#include "core/gimp.h"
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#include "core/gimpcontext.h"
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#include "core/gimpimage.h"
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#include "core/gimpimage-duplicate.h"
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#include "core/gimpimage-resize.h"
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#include "core/gimpimage-scale.h"
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#include "display/gimpdisplay.h"
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#include "display/gimpdisplay-foreach.h"
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#include "convert-dialog.h"
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#include "resize-dialog.h"
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#include "gimpprogress.h"
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#include "undo.h"
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#include "libgimp/gimpintl.h"
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typedef struct
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{
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Resize *resize;
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GimpDisplay *gdisp;
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GimpImage *gimage;
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} ImageResize;
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#define return_if_no_display(gdisp,data) \
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gdisp = gimp_context_get_display (gimp_get_user_context (GIMP (data))); \
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if (! gdisp) \
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return
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#define return_if_no_image(gimage,data) \
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gimage = gimp_context_get_image (gimp_get_user_context (GIMP (data))); \
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if (! gimage) \
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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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GimpImage *gimage;
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return_if_no_image (gimage, data);
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convert_to_rgb (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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GimpImage *gimage;
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return_if_no_image (gimage, data);
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convert_to_grayscale (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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GimpImage *gimage;
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return_if_no_image (gimage, data);
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convert_to_indexed (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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GimpDisplay *gdisp;
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GimpImage *gimage;
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ImageResize *image_resize;
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return_if_no_display (gdisp, data);
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gimage = gdisp->gimage;
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image_resize = g_new0 (ImageResize, 1);
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image_resize->gdisp = gdisp;
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image_resize->gimage = gimage;
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image_resize->resize = resize_widget_new (gimage,
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ResizeWidget,
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ResizeImage,
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G_OBJECT (gdisp),
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"disconnect",
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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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G_CALLBACK (image_resize_callback),
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NULL,
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image_resize);
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g_object_weak_ref (G_OBJECT (image_resize->resize->resize_shell),
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(GWeakNotify) g_free,
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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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GimpDisplay *gdisp;
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GimpImage *gimage;
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ImageResize *image_scale;
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return_if_no_display (gdisp, data);
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gimage = gdisp->gimage;
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image_scale = g_new0 (ImageResize, 1);
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image_scale->gdisp = gdisp;
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image_scale->gimage = gimage;
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image_scale->resize = resize_widget_new (gimage,
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ScaleWidget,
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ResizeImage,
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G_OBJECT (gdisp),
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"disconnect",
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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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G_CALLBACK (image_scale_callback),
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NULL,
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image_scale);
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g_object_weak_ref (G_OBJECT (image_scale->resize->resize_shell),
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(GWeakNotify) g_free,
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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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GimpImage *gimage;
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GimpImage *new_gimage;
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return_if_no_image (gimage, data);
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new_gimage = gimp_image_duplicate (gimage);
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gimp_create_display (new_gimage->gimp, new_gimage, 0x0101);
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g_object_unref (G_OBJECT (new_gimage));
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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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GTK_STOCK_OK, GTK_STOCK_CANCEL,
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G_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 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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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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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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GimpProgress *progress;
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if (! display_flush)
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undo_push_group_start (gimage, IMAGE_SCALE_UNDO);
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progress = progress_start (image_scale->gdisp,
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_("Scaling..."),
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TRUE, NULL, NULL);
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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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progress_update_and_flush, progress);
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progress_end (progress);
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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 (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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