mirror of https://github.com/GNOME/gimp.git
154 lines
5.6 KiB
C
154 lines
5.6 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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#ifndef __TRANSFORM_CORE_H__
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#define __TRANSFORM_CORE_H__
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#include "info_dialog.h"
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#include "draw_core.h"
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#include "temp_buf.h"
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#include "libgimp/gimpmatrix.h"
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#include "gimpprogress.h"
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/* possible scaling functions */
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#define CREATING 0
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#define HANDLE_1 1
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#define HANDLE_2 2
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#define HANDLE_3 3
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#define HANDLE_4 4
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#define HANDLE_CENTER 5
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/* the different states that the transformation function can be called with */
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#define INIT 0
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#define MOTION 1
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#define RECALC 2
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#define FINISH 3
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/* buffer sizes for scaling information strings (for the info dialog) */
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#define MAX_INFO_BUF 40
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#define TRAN_INFO_SIZE 8
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/* control whether the transform tool draws a bounding box */
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#define NON_INTERACTIVE 0
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#define INTERACTIVE 1
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enum BoundingBox
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{
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X0, Y0, X1, Y1, X2, Y2, X3, Y3
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};
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typedef double TranInfo[TRAN_INFO_SIZE];
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typedef void * (* TransformFunc) (Tool *, void *, int);
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typedef struct _TransformCore TransformCore;
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struct _TransformCore
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{
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DrawCore * core; /* Core select object */
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int startx; /* starting x coord */
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int starty; /* starting y coord */
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int curx; /* current x coord */
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int cury; /* current y coord */
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int lastx; /* last x coord */
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int lasty; /* last y coord */
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int state; /* state of buttons and keys */
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int x1, y1; /* upper left hand coordinate */
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int x2, y2; /* lower right hand coords */
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int cx, cy; /* center point (for rotation) */
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double tx1, ty1; /* transformed coords */
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double tx2, ty2; /* */
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double tx3, ty3; /* */
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double tx4, ty4; /* */
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double tcx, tcy; /* */
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int sx1, sy1; /* transformed screen coords */
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int sx2, sy2; /* position of four handles */
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int sx3, sy3; /* */
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int sx4, sy4; /* */
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int scx, scy; /* and center for rotation */
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GimpMatrix transform; /* transformation matrix */
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TranInfo trans_info; /* transformation info */
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TileManager * original; /* pointer to original tiles */
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TransformFunc trans_func; /* transformation function */
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int function; /* current tool activity */
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int interactive; /* tool is interactive */
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int bpressed; /* Bug work around make sure we have
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* a button pressed before we deal with
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* motion events. ALT.
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*/
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int ngx, ngy; /* number of grid lines in original
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x and y directions */
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double *grid_coords; /* x and y coordinates of the grid
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endpoints (a total of (ngx+ngy)*2
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coordinate pairs) */
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double *tgrid_coords; /* transformed grid_coords */
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};
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/* Special undo type */
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typedef struct _TransformUndo TransformUndo;
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struct _TransformUndo
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{
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int tool_ID;
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int tool_type;
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TranInfo trans_info;
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TileManager * original;
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void * path_undo;
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};
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/* make this variable available to all */
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extern InfoDialog * transform_info;
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/* transform tool action functions */
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void transform_core_button_press (Tool *, GdkEventButton *, gpointer);
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void transform_core_button_release (Tool *, GdkEventButton *, gpointer);
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void transform_core_motion (Tool *, GdkEventMotion *, gpointer);
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void transform_core_cursor_update (Tool *, GdkEventMotion *, gpointer);
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void transform_core_control (Tool *, ToolAction, gpointer);
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/* transform tool functions */
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void transform_core_draw (Tool *);
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void transform_core_no_draw (Tool *);
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Tool * transform_core_new (ToolType, int);
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void transform_core_free (Tool *);
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void transform_core_reset (Tool *, void *);
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void transform_core_grid_density_changed (void);
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void transform_core_showpath_changed (gint);
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/* transform functions */
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TileManager * transform_core_do (GImage *, GimpDrawable *, TileManager *,
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int, GimpMatrix, progress_func_t,
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gpointer);
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TileManager * transform_core_cut (GImage *, GimpDrawable *, int *);
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Layer * transform_core_paste (GImage *, GimpDrawable *, TileManager *,
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int);
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void transform_bounding_box (Tool*);
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#endif /* __TRANSFORM_CORE_H__ */
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