gimp/app/transform_core.h

172 lines
5.8 KiB
C

/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __TRANSFORM_CORE_H__
#define __TRANSFORM_CORE_H__
#include "draw_core.h"
#include "gimpprogress.h"
#include "info_dialog.h"
#include "temp_buf.h"
#include "libgimp/gimpmatrix.h"
/* possible transform functions */
typedef enum
{
CREATING,
HANDLE_1,
HANDLE_2,
HANDLE_3,
HANDLE_4,
HANDLE_CENTER
} TransformAction;
/* the different states that the transformation function can be called with */
typedef enum
{
INIT,
MOTION,
RECALC,
FINISH
} TransformState;
/* buffer sizes for scaling information strings (for the info dialog) */
#define MAX_INFO_BUF 40
#define TRAN_INFO_SIZE 8
enum BoundingBox
{
X0, Y0, X1, Y1, X2, Y2, X3, Y3
};
typedef gdouble TranInfo[TRAN_INFO_SIZE];
typedef TileManager * (* TransformFunc) (Tool *, void *, TransformState);
typedef struct _TransformCore TransformCore;
struct _TransformCore
{
DrawCore *core; /* Core select object */
gint startx; /* starting x coord */
gint starty; /* starting y coord */
gint curx; /* current x coord */
gint cury; /* current y coord */
gint lastx; /* last x coord */
gint lasty; /* last y coord */
gint state; /* state of buttons and keys */
gint x1, y1; /* upper left hand coordinate */
gint x2, y2; /* lower right hand coords */
gint cx, cy; /* center point (for rotation) */
gdouble tx1, ty1; /* transformed coords */
gdouble tx2, ty2; /* */
gdouble tx3, ty3; /* */
gdouble tx4, ty4; /* */
gdouble tcx, tcy; /* */
gint sx1, sy1; /* transformed screen coords */
gint sx2, sy2; /* position of four handles */
gint sx3, sy3; /* */
gint sx4, sy4; /* */
gint scx, scy; /* and center for rotation */
GimpMatrix3 transform; /* transformation matrix */
TranInfo trans_info; /* transformation info */
TileManager *original; /* pointer to original tiles */
TransformFunc trans_func; /* transformation function */
TransformAction function; /* current tool activity */
gboolean interactive; /* tool is interactive */
gboolean bpressed; /* Bug work around make sure we have
* a button pressed before we deal with
* motion events. ALT.
*/
gint ngx, ngy; /* number of grid lines in original
* x and y directions
*/
gdouble *grid_coords; /* x and y coordinates of the grid
* endpoints (a total of (ngx+ngy)*2
* coordinate pairs)
*/
gdouble *tgrid_coords; /* transformed grid_coords */
};
/* Special undo type */
typedef struct _TransformUndo TransformUndo;
struct _TransformUndo
{
gint tool_ID;
gint tool_type;
TranInfo trans_info;
TileManager *original;
void *path_undo;
};
/* make this variable available to all */
extern InfoDialog * transform_info;
/* transform tool action functions */
void transform_core_button_press (Tool *, GdkEventButton *, gpointer);
void transform_core_button_release (Tool *, GdkEventButton *, gpointer);
void transform_core_motion (Tool *, GdkEventMotion *, gpointer);
void transform_core_cursor_update (Tool *, GdkEventMotion *, gpointer);
void transform_core_control (Tool *, ToolAction, gpointer);
/* transform tool functions */
Tool * transform_core_new (ToolType tool_type,
gboolean interactive);
void transform_core_free (Tool *tool);
void transform_core_draw (Tool *tool);
void transform_core_no_draw (Tool *tool);
void transform_core_transform_bounding_box (Tool *tool);
void transform_core_reset (Tool *tool,
void *gdisp_ptr);
void transform_core_grid_density_changed (void);
void transform_core_showpath_changed (gint type);
/* transform functions */
TileManager * transform_core_do (GImage *gimage,
GimpDrawable *drawable,
TileManager *float_tiles,
gboolean interpolation,
GimpMatrix3 matrix,
progress_func_t progress_callback,
gpointer progress_data);
TileManager * transform_core_cut (GImage *gimage,
GimpDrawable *drawable,
gboolean *new_layer);
gboolean transform_core_paste (GImage *gimage,
GimpDrawable *drawable,
TileManager *tiles,
gboolean new_layer);
#endif /* __TRANSFORM_CORE_H__ */