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edd5c33923
This fixes bug #65198 * app/core/Makefile.am * app/core/core-types.h: * app/core/gimpgrid.[ch]: added new class GimpGrid. * app/core/core-enums.[ch]: added new enum GimpGridType. * app/core/gimpimage-guides.[ch]: removed the gimp_image_snap_*() functions... * app/core/gimpimage-snap.[ch]: ...and added them here since they are no longer guide specific. * app/core/gimpimage-undo-push.[ch]: added gimp_image_undo_push_image_grid() * app/display/gimpdisplayshell-handlers.c: * app/core/gimpimage.[ch]: added grid member to _GimpImage. Added new signal "grid_changed", added gimp_image_grid_changed(), gimp_image_get_grid() and gimp_image_set_grid(). * app/display/gimpdisplayshell-appearance.[ch]: added gimp_display_shell_set_show_grid(), gimp_display_shell_get_show_grid(), gimp_display_shell_set_snap_to_grid() and gimp_display_shell_get_snap_to_grid(). * app/display/gimpdisplayshell-callbacks.c: added call to gimp_display_shell_draw_grid() * app/display/gimpdisplayshell.[ch]: added grid member to _GimpDisplayShellVisibility, added snap_to_grid and grid_dialog members to _GimpDisplayShell, added gimp_display_shell_draw_grid(), modified gimp_display_shell_snap_coords() to use the new gimp_image_snap_*() functions. * app/gui/image-menu.c: added grid entries to image_menu_entries[]. * app/gui/view-commands.[ch]: added view_configure_grid_cmd_callback(), view_toggle_grid_cmd_callback() and view_snap_to_grid_cmd_callback(). * app/gui/Makefile.am * app/gui/grid-dialog.[ch]: added a grid dialog.
219 lines
5.3 KiB
C
219 lines
5.3 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 <glib-object.h>
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#include "core-types.h"
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#include "gimp.h"
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#include "gimpimage.h"
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#include "gimpimage-guides.h"
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#include "gimpimage-undo-push.h"
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#include "gimp-intl.h"
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#define GUIDE_EPSILON 5
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/* public functions */
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GimpGuide *
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gimp_image_add_hguide (GimpImage *gimage,
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gint position,
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gboolean push_undo)
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{
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GimpGuide *guide;
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g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
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g_return_val_if_fail (position >= 0 && position <= gimage->height, NULL);
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guide = g_new0 (GimpGuide, 1);
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guide->ref_count = 1;
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guide->position = -1;
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guide->orientation = GIMP_ORIENTATION_HORIZONTAL;
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guide->guide_ID = gimage->gimp->next_guide_ID++;
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if (push_undo)
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gimp_image_undo_push_image_guide (gimage, _("Add Horizontal Guide"),
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guide);
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gimp_image_add_guide (gimage, guide, position);
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gimp_image_guide_unref (guide);
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return guide;
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}
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GimpGuide *
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gimp_image_add_vguide (GimpImage *gimage,
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gint position,
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gboolean push_undo)
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{
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GimpGuide *guide;
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g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
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g_return_val_if_fail (position >= 0 && position <= gimage->width, NULL);
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guide = g_new0 (GimpGuide, 1);
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guide->ref_count = 1;
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guide->position = -1;
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guide->orientation = GIMP_ORIENTATION_VERTICAL;
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guide->guide_ID = gimage->gimp->next_guide_ID++;
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if (push_undo)
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gimp_image_undo_push_image_guide (gimage, _("Add Vertical Guide"),
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guide);
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gimp_image_add_guide (gimage, guide, position);
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gimp_image_guide_unref (guide);
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return guide;
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}
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GimpGuide *
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gimp_image_guide_ref (GimpGuide *guide)
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{
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g_return_val_if_fail (guide != NULL, NULL);
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guide->ref_count++;
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return guide;
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}
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void
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gimp_image_guide_unref (GimpGuide *guide)
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{
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g_return_if_fail (guide != NULL);
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guide->ref_count--;
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if (guide->ref_count < 1)
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g_free (guide);
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}
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void
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gimp_image_add_guide (GimpImage *gimage,
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GimpGuide *guide,
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gint position)
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{
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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g_return_if_fail (guide != NULL);
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g_return_if_fail (position >= 0);
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if (guide->orientation == GIMP_ORIENTATION_HORIZONTAL)
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g_return_if_fail (position <= gimage->height);
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else
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g_return_if_fail (position <= gimage->width);
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gimage->guides = g_list_prepend (gimage->guides, guide);
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guide->position = position;
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gimp_image_guide_ref (guide);
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gimp_image_update_guide (gimage, guide);
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}
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void
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gimp_image_remove_guide (GimpImage *gimage,
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GimpGuide *guide,
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gboolean push_undo)
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{
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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g_return_if_fail (guide != NULL);
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gimp_image_update_guide (gimage, guide);
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if (push_undo)
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gimp_image_undo_push_image_guide (gimage, _("Remove Guide"), guide);
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gimage->guides = g_list_remove (gimage->guides, guide);
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guide->position = -1;
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gimp_image_guide_unref (guide);
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}
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void
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gimp_image_move_guide (GimpImage *gimage,
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GimpGuide *guide,
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gint position,
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gboolean push_undo)
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{
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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g_return_if_fail (guide != NULL);
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g_return_if_fail (position >= 0);
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if (guide->orientation == GIMP_ORIENTATION_HORIZONTAL)
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g_return_if_fail (position <= gimage->height);
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else
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g_return_if_fail (position <= gimage->width);
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if (push_undo)
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gimp_image_undo_push_image_guide (gimage, _("Move Guide"), guide);
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gimp_image_update_guide (gimage, guide);
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guide->position = position;
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gimp_image_update_guide (gimage, guide);
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}
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GimpGuide *
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gimp_image_find_guide (GimpImage *gimage,
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gdouble x,
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gdouble y)
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{
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GList *list;
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GimpGuide *guide;
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g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
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if (x < 0 || x >= gimage->width ||
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y < 0 || y >= gimage->height)
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{
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return NULL;
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}
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for (list = gimage->guides; list; list = g_list_next (list))
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{
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guide = (GimpGuide *) list->data;
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if (guide->position < 0)
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continue;
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switch (guide->orientation)
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{
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case GIMP_ORIENTATION_HORIZONTAL:
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if (ABS (guide->position - y) < GUIDE_EPSILON)
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return guide;
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break;
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case GIMP_ORIENTATION_VERTICAL:
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if (ABS (guide->position - x) < GUIDE_EPSILON)
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return guide;
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break;
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default:
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break;
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}
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}
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return NULL;
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}
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