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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_TRANSFORM_GRID_TOOL_H__
+#define __GIMP_TRANSFORM_GRID_TOOL_H__
+
+
+#include "gimptransformtool.h"
+
+
+/* This is not the number of items in the enum above, but the max size
+ * of the enums at the top of each transformation tool, stored in
+ * trans_info and related
+ */
+#define TRANS_INFO_SIZE 17
+
+typedef gdouble TransInfo[TRANS_INFO_SIZE];
+
+
+#define GIMP_TYPE_TRANSFORM_GRID_TOOL (gimp_transform_grid_tool_get_type ())
+#define GIMP_TRANSFORM_GRID_TOOL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_TRANSFORM_GRID_TOOL, GimpTransformGridTool))
+#define GIMP_TRANSFORM_GRID_TOOL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_TRANSFORM_GRID_TOOL, GimpTransformGridToolClass))
+#define GIMP_IS_TRANSFORM_GRID_TOOL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_TRANSFORM_GRID_TOOL))
+#define GIMP_IS_TRANSFORM_GRID_TOOL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_TRANSFORM_GRID_TOOL))
+#define GIMP_TRANSFORM_GRID_TOOL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_TRANSFORM_GRID_TOOL, GimpTransformGridToolClass))
+
+#define GIMP_TRANSFORM_GRID_TOOL_GET_OPTIONS(t) (GIMP_TRANSFORM_GRID_OPTIONS (gimp_tool_get_options (GIMP_TOOL (t))))
+
+
+typedef struct _GimpTransformGridToolClass GimpTransformGridToolClass;
+
+struct _GimpTransformGridTool
+{
+ GimpTransformTool parent_instance;
+
+ TransInfo init_trans_info; /* initial transformation info */
+ TransInfo trans_infos[2]; /* forward/backward transformation info */
+ gdouble *trans_info; /* current transformation info */
+ GList *undo_list; /* list of all states,
+ head is current == prev_trans_info,
+ tail is original == old_trans_info */
+ GList *redo_list; /* list of all undone states,
+ NULL when nothing undone */
+
+ GimpObject *hidden_object; /* the object that was hidden during
+ the transform */
+
+ GimpToolWidget *widget;
+ GimpToolWidget *grab_widget;
+ GimpCanvasItem *preview;
+ GimpCanvasItem *boundary_in;
+ GimpCanvasItem *boundary_out;
+ GPtrArray *strokes;
+
+ GHashTable *filters;
+ GList *preview_drawables;
+
+ GimpToolGui *gui;
+};
+
+struct _GimpTransformGridToolClass
+{
+ GimpTransformToolClass parent_class;
+
+ /* virtual functions */
+ gboolean (* info_to_matrix) (GimpTransformGridTool *tg_tool,
+ GimpMatrix3 *transform);
+ void (* matrix_to_info) (GimpTransformGridTool *tg_tool,
+ const GimpMatrix3 *transform);
+ void (* apply_info) (GimpTransformGridTool *tg_tool,
+ const TransInfo info);
+ gchar * (* get_undo_desc) (GimpTransformGridTool *tg_tool);
+ void (* dialog) (GimpTransformGridTool *tg_tool);
+ void (* dialog_update) (GimpTransformGridTool *tg_tool);
+ void (* prepare) (GimpTransformGridTool *tg_tool);
+ void (* readjust) (GimpTransformGridTool *tg_tool);
+ GimpToolWidget * (* get_widget) (GimpTransformGridTool *tg_tool);
+ void (* update_widget) (GimpTransformGridTool *tg_tool);
+ void (* widget_changed) (GimpTransformGridTool *tg_tool);
+ GeglBuffer * (* transform) (GimpTransformGridTool *tg_tool,
+ GimpObject *object,
+ GeglBuffer *orig_buffer,
+ gint orig_offset_x,
+ gint orig_offset_y,
+ GimpColorProfile **buffer_profile,
+ gint *new_offset_x,
+ gint *new_offset_y);
+
+ const gchar *ok_button_label;
+};
+
+
+GType gimp_transform_grid_tool_get_type (void) G_GNUC_CONST;
+
+gboolean gimp_transform_grid_tool_info_to_matrix (GimpTransformGridTool *tg_tool,
+ GimpMatrix3 *transform);
+void gimp_transform_grid_tool_matrix_to_info (GimpTransformGridTool *tg_tool,
+ const GimpMatrix3 *transform);
+
+void gimp_transform_grid_tool_push_internal_undo (GimpTransformGridTool *tg_tool,
+ gboolean compress);
+
+
+#endif /* __GIMP_TRANSFORM_GRID_TOOL_H__ */