6d0190b7fd
... which specifies whether the transform matrix is valid. Subclasses can then set this member to indicate that the current transformation is invalid (which can happen in the unified, perspective, and handle transform tools). When the transform is invalid, GimpTransformTool doesn't apply it upon committing, and returns an error instead. This commit doesn't set the transform_valid member in any of the subclasses, so there's no effective change. The next commit adds a GimpGenericTransformTool subclass, that will use the new member.
112 lines
4.7 KiB
C
112 lines
4.7 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
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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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GIMP_TRANSFORM_TOOL_H__
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#define __GIMP_TRANSFORM_TOOL_H__
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#include "gimpdrawtool.h"
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/* This is not the number of items in the enum above, but the max size
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* of the enums at the top of each transformation tool, stored in
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* trans_info and related
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*/
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#define TRANS_INFO_SIZE 17
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typedef gdouble TransInfo[TRANS_INFO_SIZE];
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#define GIMP_TYPE_TRANSFORM_TOOL (gimp_transform_tool_get_type ())
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#define GIMP_TRANSFORM_TOOL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_TRANSFORM_TOOL, GimpTransformTool))
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#define GIMP_TRANSFORM_TOOL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_TRANSFORM_TOOL, GimpTransformToolClass))
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#define GIMP_IS_TRANSFORM_TOOL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_TRANSFORM_TOOL))
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#define GIMP_IS_TRANSFORM_TOOL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_TRANSFORM_TOOL))
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#define GIMP_TRANSFORM_TOOL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_TRANSFORM_TOOL, GimpTransformToolClass))
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#define GIMP_TRANSFORM_TOOL_GET_OPTIONS(t) (GIMP_TRANSFORM_OPTIONS (gimp_tool_get_options (GIMP_TOOL (t))))
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typedef struct _GimpTransformToolClass GimpTransformToolClass;
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struct _GimpTransformTool
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{
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GimpDrawTool parent_instance;
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gint x1, y1; /* upper left hand coordinate */
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gint x2, y2; /* lower right hand coords */
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GimpMatrix3 transform; /* transformation matrix */
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gboolean transform_valid; /* whether the matrix is valid */
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TransInfo trans_info; /* transformation info */
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TransInfo *old_trans_info; /* for resetting everything */
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TransInfo *prev_trans_info; /* the current finished state */
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GList *undo_list; /* list of all states,
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head is current == prev_trans_info,
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tail is original == old_trans_info */
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GList *redo_list; /* list of all undone states,
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NULL when nothing undone */
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GimpItem *hidden_item; /* the item that was hidden during
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the transform */
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GimpToolWidget *widget;
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GimpToolWidget *grab_widget;
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GimpCanvasItem *preview;
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GimpCanvasItem *boundary_in;
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GimpCanvasItem *boundary_out;
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GPtrArray *strokes;
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const gchar *progress_text;
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GimpToolGui *gui;
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};
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struct _GimpTransformToolClass
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{
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GimpDrawToolClass parent_class;
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/* virtual functions */
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void (* dialog) (GimpTransformTool *tool);
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void (* dialog_update) (GimpTransformTool *tool);
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void (* prepare) (GimpTransformTool *tool);
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GimpToolWidget * (* get_widget) (GimpTransformTool *tool);
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void (* recalc_matrix) (GimpTransformTool *tool,
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GimpToolWidget *widget);
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gchar * (* get_undo_desc) (GimpTransformTool *tool);
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GeglBuffer * (* transform) (GimpTransformTool *tool,
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GimpItem *item,
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GeglBuffer *orig_buffer,
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gint orig_offset_x,
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gint orig_offset_y,
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GimpColorProfile **buffer_profile,
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gint *new_offset_x,
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gint *new_offset_y);
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const gchar *ok_button_label;
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};
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GType gimp_transform_tool_get_type (void) G_GNUC_CONST;
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void gimp_transform_tool_recalc_matrix (GimpTransformTool *tr_tool,
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GimpToolWidget *widget);
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void gimp_transform_tool_push_internal_undo (GimpTransformTool *tr_tool);
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#endif /* __GIMP_TRANSFORM_TOOL_H__ */
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