307 lines
9.4 KiB
C
307 lines
9.4 KiB
C
/* LIBPIKA - The PIKA Library
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* Copyright (C) 1995-2003 Peter Mattis and Spencer Kimball
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*
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* pikaimageundo_pdb.c
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*
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* This library is free software: you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <https://www.gnu.org/licenses/>.
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*/
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/* NOTE: This file is auto-generated by pdbgen.pl */
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#include "config.h"
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#include "stamp-pdbgen.h"
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#include "pika.h"
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/**
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* SECTION: pikaimageundo
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* @title: pikaimageundo
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* @short_description: Control of image undo/redo.
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*
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* Control of image undo/redo.
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**/
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/**
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* pika_image_undo_group_start:
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* @image: The ID of the image in which to open an undo group.
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*
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* Starts a group undo.
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*
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* This function is used to start a group undo--necessary for logically
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* combining two or more undo operations into a single operation. This
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* call must be used in conjunction with a pika_image_undo_group_end()
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* call.
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*
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* Returns: TRUE on success.
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**/
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gboolean
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pika_image_undo_group_start (PikaImage *image)
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{
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PikaValueArray *args;
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PikaValueArray *return_vals;
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gboolean success = TRUE;
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args = pika_value_array_new_from_types (NULL,
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PIKA_TYPE_IMAGE, image,
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G_TYPE_NONE);
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return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
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"pika-image-undo-group-start",
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args);
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pika_value_array_unref (args);
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success = PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS;
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pika_value_array_unref (return_vals);
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return success;
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}
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/**
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* pika_image_undo_group_end:
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* @image: The ID of the image in which to close an undo group.
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*
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* Finish a group undo.
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*
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* This function must be called once for each
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* pika_image_undo_group_start() call that is made.
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*
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* Returns: TRUE on success.
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**/
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gboolean
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pika_image_undo_group_end (PikaImage *image)
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{
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PikaValueArray *args;
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PikaValueArray *return_vals;
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gboolean success = TRUE;
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args = pika_value_array_new_from_types (NULL,
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PIKA_TYPE_IMAGE, image,
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G_TYPE_NONE);
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return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
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"pika-image-undo-group-end",
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args);
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pika_value_array_unref (args);
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success = PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS;
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pika_value_array_unref (return_vals);
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return success;
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}
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/**
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* pika_image_undo_is_enabled:
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* @image: The image.
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*
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* Check if the image's undo stack is enabled.
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*
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* This procedure checks if the image's undo stack is currently enabled
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* or disabled. This is useful when several plug-ins or scripts call
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* each other and want to check if their caller has already used
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* pika_image_undo_disable() or pika_image_undo_freeze().
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*
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* Returns: TRUE if undo is enabled for this image.
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**/
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gboolean
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pika_image_undo_is_enabled (PikaImage *image)
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{
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PikaValueArray *args;
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PikaValueArray *return_vals;
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gboolean enabled = FALSE;
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args = pika_value_array_new_from_types (NULL,
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PIKA_TYPE_IMAGE, image,
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G_TYPE_NONE);
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return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
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"pika-image-undo-is-enabled",
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args);
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pika_value_array_unref (args);
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if (PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS)
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enabled = PIKA_VALUES_GET_BOOLEAN (return_vals, 1);
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pika_value_array_unref (return_vals);
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return enabled;
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}
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/**
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* pika_image_undo_disable:
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* @image: The image.
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*
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* Disable the image's undo stack.
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*
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* This procedure disables the image's undo stack, allowing subsequent
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* operations to ignore their undo steps. This is generally called in
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* conjunction with pika_image_undo_enable() to temporarily disable an
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* image undo stack. This is advantageous because saving undo steps can
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* be time and memory intensive.
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*
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* Returns: TRUE if the image undo has been disabled.
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**/
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gboolean
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pika_image_undo_disable (PikaImage *image)
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{
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PikaValueArray *args;
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PikaValueArray *return_vals;
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gboolean disabled = FALSE;
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args = pika_value_array_new_from_types (NULL,
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PIKA_TYPE_IMAGE, image,
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G_TYPE_NONE);
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return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
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"pika-image-undo-disable",
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args);
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pika_value_array_unref (args);
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if (PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS)
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disabled = PIKA_VALUES_GET_BOOLEAN (return_vals, 1);
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pika_value_array_unref (return_vals);
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return disabled;
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}
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/**
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* pika_image_undo_enable:
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* @image: The image.
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*
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* Enable the image's undo stack.
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*
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* This procedure enables the image's undo stack, allowing subsequent
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* operations to store their undo steps. This is generally called in
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* conjunction with pika_image_undo_disable() to temporarily disable an
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* image undo stack.
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*
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* Returns: TRUE if the image undo has been enabled.
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**/
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gboolean
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pika_image_undo_enable (PikaImage *image)
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{
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PikaValueArray *args;
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PikaValueArray *return_vals;
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gboolean enabled = FALSE;
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args = pika_value_array_new_from_types (NULL,
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PIKA_TYPE_IMAGE, image,
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G_TYPE_NONE);
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return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
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"pika-image-undo-enable",
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args);
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pika_value_array_unref (args);
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if (PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS)
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enabled = PIKA_VALUES_GET_BOOLEAN (return_vals, 1);
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pika_value_array_unref (return_vals);
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return enabled;
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}
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/**
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* pika_image_undo_freeze:
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* @image: The image.
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*
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* Freeze the image's undo stack.
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*
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* This procedure freezes the image's undo stack, allowing subsequent
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* operations to ignore their undo steps. This is generally called in
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* conjunction with pika_image_undo_thaw() to temporarily disable an
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* image undo stack. This is advantageous because saving undo steps can
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* be time and memory intensive. pika_image_undo_freeze() /
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* pika_image_undo_thaw() and pika_image_undo_disable() /
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* pika_image_undo_enable() differ in that the former does not free up
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* all undo steps when undo is thawed, so is more suited to interactive
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* in-situ previews. It is important in this case that the image is
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* back to the same state it was frozen in before thawing, else 'undo'
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* behavior is undefined.
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*
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* Returns: TRUE if the image undo has been frozen.
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**/
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gboolean
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pika_image_undo_freeze (PikaImage *image)
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{
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PikaValueArray *args;
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PikaValueArray *return_vals;
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gboolean frozen = FALSE;
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args = pika_value_array_new_from_types (NULL,
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PIKA_TYPE_IMAGE, image,
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G_TYPE_NONE);
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return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
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"pika-image-undo-freeze",
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args);
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pika_value_array_unref (args);
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if (PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS)
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frozen = PIKA_VALUES_GET_BOOLEAN (return_vals, 1);
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pika_value_array_unref (return_vals);
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return frozen;
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}
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/**
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* pika_image_undo_thaw:
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* @image: The image.
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*
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* Thaw the image's undo stack.
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*
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* This procedure thaws the image's undo stack, allowing subsequent
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* operations to store their undo steps. This is generally called in
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* conjunction with pika_image_undo_freeze() to temporarily freeze an
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* image undo stack. pika_image_undo_thaw() does NOT free the undo
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* stack as pika_image_undo_enable() does, so is suited for situations
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* where one wishes to leave the undo stack in the same state in which
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* one found it despite non-destructively playing with the image in the
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* meantime. An example would be in-situ plug-in previews. Balancing
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* freezes and thaws and ensuring image consistency is the
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* responsibility of the caller.
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*
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* Returns: TRUE if the image undo has been thawed.
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**/
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gboolean
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pika_image_undo_thaw (PikaImage *image)
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{
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PikaValueArray *args;
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PikaValueArray *return_vals;
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gboolean thawed = FALSE;
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args = pika_value_array_new_from_types (NULL,
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PIKA_TYPE_IMAGE, image,
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G_TYPE_NONE);
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return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
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"pika-image-undo-thaw",
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args);
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pika_value_array_unref (args);
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if (PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS)
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thawed = PIKA_VALUES_GET_BOOLEAN (return_vals, 1);
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pika_value_array_unref (return_vals);
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return thawed;
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}
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